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-rw-r--r--net/ceph/Kconfig4
-rw-r--r--net/ceph/Makefile2
-rw-r--r--net/ceph/auth.c117
-rw-r--r--net/ceph/auth_none.c21
-rw-r--r--net/ceph/auth_none.h2
-rw-r--r--net/ceph/auth_x.c39
-rw-r--r--net/ceph/auth_x.h9
-rw-r--r--net/ceph/buffer.c22
-rw-r--r--net/ceph/ceph_common.c122
-rw-r--r--net/ceph/ceph_hash.c6
-rw-r--r--net/ceph/ceph_strings.c39
-rw-r--r--net/ceph/crush/crush.c46
-rw-r--r--net/ceph/crush/mapper.c484
-rw-r--r--net/ceph/crypto.c15
-rw-r--r--net/ceph/crypto.h51
-rw-r--r--net/ceph/debugfs.c99
-rw-r--r--net/ceph/messenger.c2511
-rw-r--r--net/ceph/mon_client.c319
-rw-r--r--net/ceph/msgpool.c7
-rw-r--r--net/ceph/osd_client.c1981
-rw-r--r--net/ceph/osdmap.c1352
-rw-r--r--net/ceph/pagelist.c19
-rw-r--r--net/ceph/pagevec.c57
-rw-r--r--net/ceph/snapshot.c78
24 files changed, 5049 insertions, 2353 deletions
diff --git a/net/ceph/Kconfig b/net/ceph/Kconfig
index cc04dd667a1..e50cc69ae8c 100644
--- a/net/ceph/Kconfig
+++ b/net/ceph/Kconfig
@@ -1,6 +1,6 @@
config CEPH_LIB
- tristate "Ceph core library (EXPERIMENTAL)"
- depends on INET && EXPERIMENTAL
+ tristate "Ceph core library"
+ depends on INET
select LIBCRC32C
select CRYPTO_AES
select CRYPTO
diff --git a/net/ceph/Makefile b/net/ceph/Makefile
index e87ef435e11..958d9856912 100644
--- a/net/ceph/Makefile
+++ b/net/ceph/Makefile
@@ -11,5 +11,5 @@ libceph-y := ceph_common.o messenger.o msgpool.o buffer.o pagelist.o \
crypto.o armor.o \
auth_x.o \
ceph_fs.o ceph_strings.o ceph_hash.o \
- pagevec.o
+ pagevec.o snapshot.o
diff --git a/net/ceph/auth.c b/net/ceph/auth.c
index b4bf4ac090f..6b923bcaa2a 100644
--- a/net/ceph/auth.c
+++ b/net/ceph/auth.c
@@ -47,6 +47,7 @@ struct ceph_auth_client *ceph_auth_init(const char *name, const struct ceph_cryp
if (!ac)
goto out;
+ mutex_init(&ac->mutex);
ac->negotiating = true;
if (name)
ac->name = name;
@@ -73,10 +74,12 @@ void ceph_auth_destroy(struct ceph_auth_client *ac)
*/
void ceph_auth_reset(struct ceph_auth_client *ac)
{
+ mutex_lock(&ac->mutex);
dout("auth_reset %p\n", ac);
if (ac->ops && !ac->negotiating)
ac->ops->reset(ac);
ac->negotiating = true;
+ mutex_unlock(&ac->mutex);
}
int ceph_entity_name_encode(const char *name, void **p, void *end)
@@ -102,6 +105,7 @@ int ceph_auth_build_hello(struct ceph_auth_client *ac, void *buf, size_t len)
int i, num;
int ret;
+ mutex_lock(&ac->mutex);
dout("auth_build_hello\n");
monhdr->have_version = 0;
monhdr->session_mon = cpu_to_le16(-1);
@@ -122,15 +126,19 @@ int ceph_auth_build_hello(struct ceph_auth_client *ac, void *buf, size_t len)
ret = ceph_entity_name_encode(ac->name, &p, end);
if (ret < 0)
- return ret;
+ goto out;
ceph_decode_need(&p, end, sizeof(u64), bad);
ceph_encode_64(&p, ac->global_id);
ceph_encode_32(&lenp, p - lenp - sizeof(u32));
- return p - buf;
+ ret = p - buf;
+out:
+ mutex_unlock(&ac->mutex);
+ return ret;
bad:
- return -ERANGE;
+ ret = -ERANGE;
+ goto out;
}
static int ceph_build_auth_request(struct ceph_auth_client *ac,
@@ -151,11 +159,13 @@ static int ceph_build_auth_request(struct ceph_auth_client *ac,
if (ret < 0) {
pr_err("error %d building auth method %s request\n", ret,
ac->ops->name);
- return ret;
+ goto out;
}
dout(" built request %d bytes\n", ret);
ceph_encode_32(&p, ret);
- return p + ret - msg_buf;
+ ret = p + ret - msg_buf;
+out:
+ return ret;
}
/*
@@ -176,6 +186,7 @@ int ceph_handle_auth_reply(struct ceph_auth_client *ac,
int result_msg_len;
int ret = -EINVAL;
+ mutex_lock(&ac->mutex);
dout("handle_auth_reply %p %p\n", p, end);
ceph_decode_need(&p, end, sizeof(u32) * 3 + sizeof(u64), bad);
protocol = ceph_decode_32(&p);
@@ -227,33 +238,103 @@ int ceph_handle_auth_reply(struct ceph_auth_client *ac,
ret = ac->ops->handle_reply(ac, result, payload, payload_end);
if (ret == -EAGAIN) {
- return ceph_build_auth_request(ac, reply_buf, reply_len);
+ ret = ceph_build_auth_request(ac, reply_buf, reply_len);
} else if (ret) {
pr_err("auth method '%s' error %d\n", ac->ops->name, ret);
- return ret;
}
- return 0;
-bad:
- pr_err("failed to decode auth msg\n");
out:
+ mutex_unlock(&ac->mutex);
return ret;
+
+bad:
+ pr_err("failed to decode auth msg\n");
+ ret = -EINVAL;
+ goto out;
}
int ceph_build_auth(struct ceph_auth_client *ac,
void *msg_buf, size_t msg_len)
{
+ int ret = 0;
+
+ mutex_lock(&ac->mutex);
if (!ac->protocol)
- return ceph_auth_build_hello(ac, msg_buf, msg_len);
- BUG_ON(!ac->ops);
- if (ac->ops->should_authenticate(ac))
- return ceph_build_auth_request(ac, msg_buf, msg_len);
- return 0;
+ ret = ceph_auth_build_hello(ac, msg_buf, msg_len);
+ else if (ac->ops->should_authenticate(ac))
+ ret = ceph_build_auth_request(ac, msg_buf, msg_len);
+ mutex_unlock(&ac->mutex);
+ return ret;
}
int ceph_auth_is_authenticated(struct ceph_auth_client *ac)
{
- if (!ac->ops)
- return 0;
- return ac->ops->is_authenticated(ac);
+ int ret = 0;
+
+ mutex_lock(&ac->mutex);
+ if (ac->ops)
+ ret = ac->ops->is_authenticated(ac);
+ mutex_unlock(&ac->mutex);
+ return ret;
+}
+EXPORT_SYMBOL(ceph_auth_is_authenticated);
+
+int ceph_auth_create_authorizer(struct ceph_auth_client *ac,
+ int peer_type,
+ struct ceph_auth_handshake *auth)
+{
+ int ret = 0;
+
+ mutex_lock(&ac->mutex);
+ if (ac->ops && ac->ops->create_authorizer)
+ ret = ac->ops->create_authorizer(ac, peer_type, auth);
+ mutex_unlock(&ac->mutex);
+ return ret;
+}
+EXPORT_SYMBOL(ceph_auth_create_authorizer);
+
+void ceph_auth_destroy_authorizer(struct ceph_auth_client *ac,
+ struct ceph_authorizer *a)
+{
+ mutex_lock(&ac->mutex);
+ if (ac->ops && ac->ops->destroy_authorizer)
+ ac->ops->destroy_authorizer(ac, a);
+ mutex_unlock(&ac->mutex);
+}
+EXPORT_SYMBOL(ceph_auth_destroy_authorizer);
+
+int ceph_auth_update_authorizer(struct ceph_auth_client *ac,
+ int peer_type,
+ struct ceph_auth_handshake *a)
+{
+ int ret = 0;
+
+ mutex_lock(&ac->mutex);
+ if (ac->ops && ac->ops->update_authorizer)
+ ret = ac->ops->update_authorizer(ac, peer_type, a);
+ mutex_unlock(&ac->mutex);
+ return ret;
+}
+EXPORT_SYMBOL(ceph_auth_update_authorizer);
+
+int ceph_auth_verify_authorizer_reply(struct ceph_auth_client *ac,
+ struct ceph_authorizer *a, size_t len)
+{
+ int ret = 0;
+
+ mutex_lock(&ac->mutex);
+ if (ac->ops && ac->ops->verify_authorizer_reply)
+ ret = ac->ops->verify_authorizer_reply(ac, a, len);
+ mutex_unlock(&ac->mutex);
+ return ret;
+}
+EXPORT_SYMBOL(ceph_auth_verify_authorizer_reply);
+
+void ceph_auth_invalidate_authorizer(struct ceph_auth_client *ac, int peer_type)
+{
+ mutex_lock(&ac->mutex);
+ if (ac->ops && ac->ops->invalidate_authorizer)
+ ac->ops->invalidate_authorizer(ac, peer_type);
+ mutex_unlock(&ac->mutex);
}
+EXPORT_SYMBOL(ceph_auth_invalidate_authorizer);
diff --git a/net/ceph/auth_none.c b/net/ceph/auth_none.c
index 214c2bb43d6..8c93fa8d81b 100644
--- a/net/ceph/auth_none.c
+++ b/net/ceph/auth_none.c
@@ -39,6 +39,11 @@ static int should_authenticate(struct ceph_auth_client *ac)
return xi->starting;
}
+static int build_request(struct ceph_auth_client *ac, void *buf, void *end)
+{
+ return 0;
+}
+
/*
* the generic auth code decode the global_id, and we carry no actual
* authenticate state, so nothing happens here.
@@ -59,9 +64,7 @@ static int handle_reply(struct ceph_auth_client *ac, int result,
*/
static int ceph_auth_none_create_authorizer(
struct ceph_auth_client *ac, int peer_type,
- struct ceph_authorizer **a,
- void **buf, size_t *len,
- void **reply_buf, size_t *reply_len)
+ struct ceph_auth_handshake *auth)
{
struct ceph_auth_none_info *ai = ac->private;
struct ceph_none_authorizer *au = &ai->au;
@@ -82,11 +85,12 @@ static int ceph_auth_none_create_authorizer(
dout("built authorizer len %d\n", au->buf_len);
}
- *a = (struct ceph_authorizer *)au;
- *buf = au->buf;
- *len = au->buf_len;
- *reply_buf = au->reply_buf;
- *reply_len = sizeof(au->reply_buf);
+ auth->authorizer = (struct ceph_authorizer *) au;
+ auth->authorizer_buf = au->buf;
+ auth->authorizer_buf_len = au->buf_len;
+ auth->authorizer_reply_buf = au->reply_buf;
+ auth->authorizer_reply_buf_len = sizeof (au->reply_buf);
+
return 0;
bad2:
@@ -107,6 +111,7 @@ static const struct ceph_auth_client_ops ceph_auth_none_ops = {
.destroy = destroy,
.is_authenticated = is_authenticated,
.should_authenticate = should_authenticate,
+ .build_request = build_request,
.handle_reply = handle_reply,
.create_authorizer = ceph_auth_none_create_authorizer,
.destroy_authorizer = ceph_auth_none_destroy_authorizer,
diff --git a/net/ceph/auth_none.h b/net/ceph/auth_none.h
index ed7d088b1bc..059a3ce4b53 100644
--- a/net/ceph/auth_none.h
+++ b/net/ceph/auth_none.h
@@ -23,7 +23,7 @@ struct ceph_auth_none_info {
struct ceph_none_authorizer au; /* we only need one; it's static */
};
-extern int ceph_auth_none_init(struct ceph_auth_client *ac);
+int ceph_auth_none_init(struct ceph_auth_client *ac);
#endif
diff --git a/net/ceph/auth_x.c b/net/ceph/auth_x.c
index 1587dc6010c..96238ba95f2 100644
--- a/net/ceph/auth_x.c
+++ b/net/ceph/auth_x.c
@@ -298,6 +298,7 @@ static int ceph_x_build_authorizer(struct ceph_auth_client *ac,
return -ENOMEM;
}
au->service = th->service;
+ au->secret_id = th->secret_id;
msg_a = au->buf->vec.iov_base;
msg_a->struct_v = 1;
@@ -526,9 +527,7 @@ static int ceph_x_handle_reply(struct ceph_auth_client *ac, int result,
static int ceph_x_create_authorizer(
struct ceph_auth_client *ac, int peer_type,
- struct ceph_authorizer **a,
- void **buf, size_t *len,
- void **reply_buf, size_t *reply_len)
+ struct ceph_auth_handshake *auth)
{
struct ceph_x_authorizer *au;
struct ceph_x_ticket_handler *th;
@@ -548,11 +547,32 @@ static int ceph_x_create_authorizer(
return ret;
}
- *a = (struct ceph_authorizer *)au;
- *buf = au->buf->vec.iov_base;
- *len = au->buf->vec.iov_len;
- *reply_buf = au->reply_buf;
- *reply_len = sizeof(au->reply_buf);
+ auth->authorizer = (struct ceph_authorizer *) au;
+ auth->authorizer_buf = au->buf->vec.iov_base;
+ auth->authorizer_buf_len = au->buf->vec.iov_len;
+ auth->authorizer_reply_buf = au->reply_buf;
+ auth->authorizer_reply_buf_len = sizeof (au->reply_buf);
+
+ return 0;
+}
+
+static int ceph_x_update_authorizer(
+ struct ceph_auth_client *ac, int peer_type,
+ struct ceph_auth_handshake *auth)
+{
+ struct ceph_x_authorizer *au;
+ struct ceph_x_ticket_handler *th;
+
+ th = get_ticket_handler(ac, peer_type);
+ if (IS_ERR(th))
+ return PTR_ERR(th);
+
+ au = (struct ceph_x_authorizer *)auth->authorizer;
+ if (au->secret_id < th->secret_id) {
+ dout("ceph_x_update_authorizer service %u secret %llu < %llu\n",
+ au->service, au->secret_id, th->secret_id);
+ return ceph_x_build_authorizer(ac, th, au);
+ }
return 0;
}
@@ -631,7 +651,7 @@ static void ceph_x_invalidate_authorizer(struct ceph_auth_client *ac,
th = get_ticket_handler(ac, peer_type);
if (!IS_ERR(th))
- remove_ticket_handler(ac, th);
+ memset(&th->validity, 0, sizeof(th->validity));
}
@@ -642,6 +662,7 @@ static const struct ceph_auth_client_ops ceph_x_ops = {
.build_request = ceph_x_build_request,
.handle_reply = ceph_x_handle_reply,
.create_authorizer = ceph_x_create_authorizer,
+ .update_authorizer = ceph_x_update_authorizer,
.verify_authorizer_reply = ceph_x_verify_authorizer_reply,
.destroy_authorizer = ceph_x_destroy_authorizer,
.invalidate_authorizer = ceph_x_invalidate_authorizer,
diff --git a/net/ceph/auth_x.h b/net/ceph/auth_x.h
index e02da7a5c5a..65ee72082d9 100644
--- a/net/ceph/auth_x.h
+++ b/net/ceph/auth_x.h
@@ -13,7 +13,7 @@
*/
struct ceph_x_ticket_handler {
struct rb_node node;
- unsigned service;
+ unsigned int service;
struct ceph_crypto_key session_key;
struct ceph_timespec validity;
@@ -27,8 +27,9 @@ struct ceph_x_ticket_handler {
struct ceph_x_authorizer {
struct ceph_buffer *buf;
- unsigned service;
+ unsigned int service;
u64 nonce;
+ u64 secret_id;
char reply_buf[128]; /* big enough for encrypted blob */
};
@@ -38,13 +39,13 @@ struct ceph_x_info {
bool starting;
u64 server_challenge;
- unsigned have_keys;
+ unsigned int have_keys;
struct rb_root ticket_handlers;
struct ceph_x_authorizer auth_authorizer;
};
-extern int ceph_x_init(struct ceph_auth_client *ac);
+int ceph_x_init(struct ceph_auth_client *ac);
#endif
diff --git a/net/ceph/buffer.c b/net/ceph/buffer.c
index bf3e6a13c21..621b5f65407 100644
--- a/net/ceph/buffer.c
+++ b/net/ceph/buffer.c
@@ -6,6 +6,7 @@
#include <linux/ceph/buffer.h>
#include <linux/ceph/decode.h>
+#include <linux/ceph/libceph.h> /* for ceph_kv{malloc,free} */
struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp)
{
@@ -15,16 +16,10 @@ struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp)
if (!b)
return NULL;
- b->vec.iov_base = kmalloc(len, gfp | __GFP_NOWARN);
- if (b->vec.iov_base) {
- b->is_vmalloc = false;
- } else {
- b->vec.iov_base = __vmalloc(len, gfp | __GFP_HIGHMEM, PAGE_KERNEL);
- if (!b->vec.iov_base) {
- kfree(b);
- return NULL;
- }
- b->is_vmalloc = true;
+ b->vec.iov_base = ceph_kvmalloc(len, gfp);
+ if (!b->vec.iov_base) {
+ kfree(b);
+ return NULL;
}
kref_init(&b->kref);
@@ -40,12 +35,7 @@ void ceph_buffer_release(struct kref *kref)
struct ceph_buffer *b = container_of(kref, struct ceph_buffer, kref);
dout("buffer_release %p\n", b);
- if (b->vec.iov_base) {
- if (b->is_vmalloc)
- vfree(b->vec.iov_base);
- else
- kfree(b->vec.iov_base);
- }
+ ceph_kvfree(b->vec.iov_base);
kfree(b);
}
EXPORT_SYMBOL(ceph_buffer_release);
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 761ad9d6cc3..1675021d8c1 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -15,8 +15,12 @@
#include <linux/slab.h>
#include <linux/statfs.h>
#include <linux/string.h>
+#include <linux/vmalloc.h>
+#include <linux/nsproxy.h>
+#include <net/net_namespace.h>
+#include <linux/ceph/ceph_features.h>
#include <linux/ceph/libceph.h>
#include <linux/ceph/debugfs.h>
#include <linux/ceph/decode.h>
@@ -25,6 +29,22 @@
#include "crypto.h"
+/*
+ * Module compatibility interface. For now it doesn't do anything,
+ * but its existence signals a certain level of functionality.
+ *
+ * The data buffer is used to pass information both to and from
+ * libceph. The return value indicates whether libceph determines
+ * it is compatible with the caller (from another kernel module),
+ * given the provided data.
+ *
+ * The data pointer can be null.
+ */
+bool libceph_compatible(void *data)
+{
+ return true;
+}
+EXPORT_SYMBOL(libceph_compatible);
/*
* find filename portion of a path (/foo/bar/baz -> baz)
@@ -52,6 +72,8 @@ const char *ceph_msg_type_name(int type)
case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack";
case CEPH_MSG_STATFS: return "statfs";
case CEPH_MSG_STATFS_REPLY: return "statfs_reply";
+ case CEPH_MSG_MON_GET_VERSION: return "mon_get_version";
+ case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply";
case CEPH_MSG_MDS_MAP: return "mds_map";
case CEPH_MSG_CLIENT_SESSION: return "client_session";
case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect";
@@ -83,7 +105,6 @@ int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
return -1;
}
} else {
- pr_info("client%lld fsid %pU\n", ceph_client_id(client), fsid);
memcpy(&client->fsid, fsid, sizeof(*fsid));
}
return 0;
@@ -152,6 +173,25 @@ int ceph_compare_options(struct ceph_options *new_opt,
}
EXPORT_SYMBOL(ceph_compare_options);
+void *ceph_kvmalloc(size_t size, gfp_t flags)
+{
+ if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) {
+ void *ptr = kmalloc(size, flags | __GFP_NOWARN);
+ if (ptr)
+ return ptr;
+ }
+
+ return __vmalloc(size, flags | __GFP_HIGHMEM, PAGE_KERNEL);
+}
+
+void ceph_kvfree(const void *ptr)
+{
+ if (is_vmalloc_addr(ptr))
+ vfree(ptr);
+ else
+ kfree(ptr);
+}
+
static int parse_fsid(const char *str, struct ceph_fsid *fsid)
{
@@ -201,7 +241,9 @@ enum {
Opt_ip,
Opt_last_string,
/* string args above */
+ Opt_share,
Opt_noshare,
+ Opt_crc,
Opt_nocrc,
};
@@ -217,7 +259,9 @@ static match_table_t opt_tokens = {
{Opt_key, "key=%s"},
{Opt_ip, "ip=%s"},
/* string args above */
+ {Opt_share, "share"},
{Opt_noshare, "noshare"},
+ {Opt_crc, "crc"},
{Opt_nocrc, "nocrc"},
{-1, NULL}
};
@@ -277,19 +321,23 @@ out:
return err;
}
-int ceph_parse_options(struct ceph_options **popt, char *options,
- const char *dev_name, const char *dev_name_end,
- int (*parse_extra_token)(char *c, void *private),
- void *private)
+struct ceph_options *
+ceph_parse_options(char *options, const char *dev_name,
+ const char *dev_name_end,
+ int (*parse_extra_token)(char *c, void *private),
+ void *private)
{
struct ceph_options *opt;
const char *c;
int err = -ENOMEM;
substring_t argstr[MAX_OPT_ARGS];
+ if (current->nsproxy->net_ns != &init_net)
+ return ERR_PTR(-EINVAL);
+
opt = kzalloc(sizeof(*opt), GFP_KERNEL);
if (!opt)
- return err;
+ return ERR_PTR(-ENOMEM);
opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr),
GFP_KERNEL);
if (!opt->mon_addr)
@@ -300,7 +348,6 @@ int ceph_parse_options(struct ceph_options **popt, char *options,
/* start with defaults */
opt->flags = CEPH_OPT_DEFAULT;
- opt->osd_timeout = CEPH_OSD_TIMEOUT_DEFAULT;
opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT;
opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; /* seconds */
opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; /* seconds */
@@ -386,7 +433,7 @@ int ceph_parse_options(struct ceph_options **popt, char *options,
/* misc */
case Opt_osdtimeout:
- opt->osd_timeout = intval;
+ pr_warning("ignoring deprecated osdtimeout option\n");
break;
case Opt_osdkeepalivetimeout:
opt->osd_keepalive_timeout = intval;
@@ -398,10 +445,16 @@ int ceph_parse_options(struct ceph_options **popt, char *options,
opt->mount_timeout = intval;
break;
+ case Opt_share:
+ opt->flags &= ~CEPH_OPT_NOSHARE;
+ break;
case Opt_noshare:
opt->flags |= CEPH_OPT_NOSHARE;
break;
+ case Opt_crc:
+ opt->flags &= ~CEPH_OPT_NOCRC;
+ break;
case Opt_nocrc:
opt->flags |= CEPH_OPT_NOCRC;
break;
@@ -412,12 +465,11 @@ int ceph_parse_options(struct ceph_options **popt, char *options,
}
/* success */
- *popt = opt;
- return 0;
+ return opt;
out:
ceph_destroy_options(opt);
- return err;
+ return ERR_PTR(err);
}
EXPORT_SYMBOL(ceph_parse_options);
@@ -431,8 +483,8 @@ EXPORT_SYMBOL(ceph_client_id);
* create a fresh client instance
*/
struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private,
- unsigned supported_features,
- unsigned required_features)
+ u64 supported_features,
+ u64 required_features)
{
struct ceph_client *client;
struct ceph_entity_addr *myaddr = NULL;
@@ -450,27 +502,23 @@ struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private,
client->auth_err = 0;
client->extra_mon_dispatch = NULL;
- client->supported_features = CEPH_FEATURE_SUPPORTED_DEFAULT |
+ client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT |
supported_features;
- client->required_features = CEPH_FEATURE_REQUIRED_DEFAULT |
+ client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT |
required_features;
/* msgr */
if (ceph_test_opt(client, MYIP))
myaddr = &client->options->my_addr;
- client->msgr = ceph_messenger_create(myaddr,
- client->supported_features,
- client->required_features);
- if (IS_ERR(client->msgr)) {
- err = PTR_ERR(client->msgr);
- goto fail;
- }
- client->msgr->nocrc = ceph_test_opt(client, NOCRC);
+ ceph_messenger_init(&client->msgr, myaddr,
+ client->supported_features,
+ client->required_features,
+ ceph_test_opt(client, NOCRC));
/* subsystems */
err = ceph_monc_init(&client->monc, client);
if (err < 0)
- goto fail_msgr;
+ goto fail;
err = ceph_osdc_init(&client->osdc, client);
if (err < 0)
goto fail_monc;
@@ -479,8 +527,6 @@ struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private,
fail_monc:
ceph_monc_stop(&client->monc);
-fail_msgr:
- ceph_messenger_destroy(client->msgr);
fail:
kfree(client);
return ERR_PTR(err);
@@ -491,22 +537,15 @@ void ceph_destroy_client(struct ceph_client *client)
{
dout("destroy_client %p\n", client);
+ atomic_set(&client->msgr.stopping, 1);
+
/* unmount */
ceph_osdc_stop(&client->osdc);
- /*
- * make sure osd connections close out before destroying the
- * auth module, which is needed to free those connections'
- * ceph_authorizers.
- */
- ceph_msgr_flush();
-
ceph_monc_stop(&client->monc);
ceph_debugfs_client_cleanup(client);
- ceph_messenger_destroy(client->msgr);
-
ceph_destroy_options(client->options);
kfree(client);
@@ -589,13 +628,17 @@ static int __init init_ceph_lib(void)
if (ret < 0)
goto out_crypto;
- pr_info("loaded (mon/osd proto %d/%d, osdmap %d/%d %d/%d)\n",
- CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL,
- CEPH_OSDMAP_VERSION, CEPH_OSDMAP_VERSION_EXT,
- CEPH_OSDMAP_INC_VERSION, CEPH_OSDMAP_INC_VERSION_EXT);
+ ret = ceph_osdc_setup();
+ if (ret < 0)
+ goto out_msgr;
+
+ pr_info("loaded (mon/osd proto %d/%d)\n",
+ CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL);
return 0;
+out_msgr:
+ ceph_msgr_exit();
out_crypto:
ceph_crypto_shutdown();
out_debugfs:
@@ -607,6 +650,7 @@ out:
static void __exit exit_ceph_lib(void)
{
dout("exit_ceph_lib\n");
+ ceph_osdc_cleanup();
ceph_msgr_exit();
ceph_crypto_shutdown();
ceph_debugfs_cleanup();
diff --git a/net/ceph/ceph_hash.c b/net/ceph/ceph_hash.c
index 0a1b53bce76..67bb1f11e61 100644
--- a/net/ceph/ceph_hash.c
+++ b/net/ceph/ceph_hash.c
@@ -20,7 +20,7 @@
c = c - a; c = c - b; c = c ^ (b >> 15); \
} while (0)
-unsigned ceph_str_hash_rjenkins(const char *str, unsigned length)
+unsigned int ceph_str_hash_rjenkins(const char *str, unsigned int length)
{
const unsigned char *k = (const unsigned char *)str;
__u32 a, b, c; /* the internal state */
@@ -81,7 +81,7 @@ unsigned ceph_str_hash_rjenkins(const char *str, unsigned length)
/*
* linux dcache hash
*/
-unsigned ceph_str_hash_linux(const char *str, unsigned length)
+unsigned int ceph_str_hash_linux(const char *str, unsigned int length)
{
unsigned long hash = 0;
unsigned char c;
@@ -94,7 +94,7 @@ unsigned ceph_str_hash_linux(const char *str, unsigned length)
}
-unsigned ceph_str_hash(int type, const char *s, unsigned len)
+unsigned int ceph_str_hash(int type, const char *s, unsigned int len)
{
switch (type) {
case CEPH_STR_HASH_LINUX:
diff --git a/net/ceph/ceph_strings.c b/net/ceph/ceph_strings.c
index 3fbda04de29..1348df96fe1 100644
--- a/net/ceph/ceph_strings.c
+++ b/net/ceph/ceph_strings.c
@@ -21,9 +21,15 @@ const char *ceph_osd_op_name(int op)
switch (op) {
case CEPH_OSD_OP_READ: return "read";
case CEPH_OSD_OP_STAT: return "stat";
+ case CEPH_OSD_OP_MAPEXT: return "mapext";
+ case CEPH_OSD_OP_SPARSE_READ: return "sparse-read";
+ case CEPH_OSD_OP_NOTIFY: return "notify";
+ case CEPH_OSD_OP_NOTIFY_ACK: return "notify-ack";
+ case CEPH_OSD_OP_ASSERT_VER: return "assert-version";
case CEPH_OSD_OP_MASKTRUNC: return "masktrunc";
+ case CEPH_OSD_OP_CREATE: return "create";
case CEPH_OSD_OP_WRITE: return "write";
case CEPH_OSD_OP_DELETE: return "delete";
case CEPH_OSD_OP_TRUNCATE: return "truncate";
@@ -39,6 +45,11 @@ const char *ceph_osd_op_name(int op)
case CEPH_OSD_OP_TMAPUP: return "tmapup";
case CEPH_OSD_OP_TMAPGET: return "tmapget";
case CEPH_OSD_OP_TMAPPUT: return "tmapput";
+ case CEPH_OSD_OP_WATCH: return "watch";
+
+ case CEPH_OSD_OP_CLONERANGE: return "clonerange";
+ case CEPH_OSD_OP_ASSERT_SRC_VERSION: return "assert-src-version";
+ case CEPH_OSD_OP_SRC_CMPXATTR: return "src-cmpxattr";
case CEPH_OSD_OP_GETXATTR: return "getxattr";
case CEPH_OSD_OP_GETXATTRS: return "getxattrs";
@@ -53,6 +64,10 @@ const char *ceph_osd_op_name(int op)
case CEPH_OSD_OP_BALANCEREADS: return "balance-reads";
case CEPH_OSD_OP_UNBALANCEREADS: return "unbalance-reads";
case CEPH_OSD_OP_SCRUB: return "scrub";
+ case CEPH_OSD_OP_SCRUB_RESERVE: return "scrub-reserve";
+ case CEPH_OSD_OP_SCRUB_UNRESERVE: return "scrub-unreserve";
+ case CEPH_OSD_OP_SCRUB_STOP: return "scrub-stop";
+ case CEPH_OSD_OP_SCRUB_MAP: return "scrub-map";
case CEPH_OSD_OP_WRLOCK: return "wrlock";
case CEPH_OSD_OP_WRUNLOCK: return "wrunlock";
@@ -64,10 +79,34 @@ const char *ceph_osd_op_name(int op)
case CEPH_OSD_OP_CALL: return "call";
case CEPH_OSD_OP_PGLS: return "pgls";
+ case CEPH_OSD_OP_PGLS_FILTER: return "pgls-filter";
+ case CEPH_OSD_OP_OMAPGETKEYS: return "omap-get-keys";
+ case CEPH_OSD_OP_OMAPGETVALS: return "omap-get-vals";
+ case CEPH_OSD_OP_OMAPGETHEADER: return "omap-get-header";
+ case CEPH_OSD_OP_OMAPGETVALSBYKEYS: return "omap-get-vals-by-keys";
+ case CEPH_OSD_OP_OMAPSETVALS: return "omap-set-vals";
+ case CEPH_OSD_OP_OMAPSETHEADER: return "omap-set-header";
+ case CEPH_OSD_OP_OMAPCLEAR: return "omap-clear";
+ case CEPH_OSD_OP_OMAPRMKEYS: return "omap-rm-keys";
}
return "???";
}
+const char *ceph_osd_state_name(int s)
+{
+ switch (s) {
+ case CEPH_OSD_EXISTS:
+ return "exists";
+ case CEPH_OSD_UP:
+ return "up";
+ case CEPH_OSD_AUTOOUT:
+ return "autoout";
+ case CEPH_OSD_NEW:
+ return "new";
+ default:
+ return "???";
+ }
+}
const char *ceph_pool_op_name(int op)
{
diff --git a/net/ceph/crush/crush.c b/net/ceph/crush/crush.c
index d6ebb13a18a..16bc199d9a6 100644
--- a/net/ceph/crush/crush.c
+++ b/net/ceph/crush/crush.c
@@ -26,9 +26,9 @@ const char *crush_bucket_alg_name(int alg)
* @b: bucket pointer
* @p: item index in bucket
*/
-int crush_get_bucket_item_weight(struct crush_bucket *b, int p)
+int crush_get_bucket_item_weight(const struct crush_bucket *b, int p)
{
- if (p >= b->size)
+ if ((__u32)p >= b->size)
return 0;
switch (b->alg) {
@@ -37,38 +37,13 @@ int crush_get_bucket_item_weight(struct crush_bucket *b, int p)
case CRUSH_BUCKET_LIST:
return ((struct crush_bucket_list *)b)->item_weights[p];
case CRUSH_BUCKET_TREE:
- if (p & 1)
- return ((struct crush_bucket_tree *)b)->node_weights[p];
- return 0;
+ return ((struct crush_bucket_tree *)b)->node_weights[crush_calc_tree_node(p)];
case CRUSH_BUCKET_STRAW:
return ((struct crush_bucket_straw *)b)->item_weights[p];
}
return 0;
}
-/**
- * crush_calc_parents - Calculate parent vectors for the given crush map.
- * @map: crush_map pointer
- */
-void crush_calc_parents(struct crush_map *map)
-{
- int i, b, c;
-
- for (b = 0; b < map->max_buckets; b++) {
- if (map->buckets[b] == NULL)
- continue;
- for (i = 0; i < map->buckets[b]->size; i++) {
- c = map->buckets[b]->items[i];
- BUG_ON(c >= map->max_devices ||
- c < -map->max_buckets);
- if (c >= 0)
- map->device_parents[c] = map->buckets[b]->id;
- else
- map->bucket_parents[-1-c] = map->buckets[b]->id;
- }
- }
-}
-
void crush_destroy_bucket_uniform(struct crush_bucket_uniform *b)
{
kfree(b->h.perm);
@@ -87,6 +62,8 @@ void crush_destroy_bucket_list(struct crush_bucket_list *b)
void crush_destroy_bucket_tree(struct crush_bucket_tree *b)
{
+ kfree(b->h.perm);
+ kfree(b->h.items);
kfree(b->node_weights);
kfree(b);
}
@@ -124,10 +101,9 @@ void crush_destroy_bucket(struct crush_bucket *b)
*/
void crush_destroy(struct crush_map *map)
{
- int b;
-
/* buckets */
if (map->buckets) {
+ __s32 b;
for (b = 0; b < map->max_buckets; b++) {
if (map->buckets[b] == NULL)
continue;
@@ -138,14 +114,16 @@ void crush_destroy(struct crush_map *map)
/* rules */
if (map->rules) {
+ __u32 b;
for (b = 0; b < map->max_rules; b++)
- kfree(map->rules[b]);
+ crush_destroy_rule(map->rules[b]);
kfree(map->rules);
}
- kfree(map->bucket_parents);
- kfree(map->device_parents);
kfree(map);
}
-
+void crush_destroy_rule(struct crush_rule *rule)
+{
+ kfree(rule);
+}
diff --git a/net/ceph/crush/mapper.c b/net/ceph/crush/mapper.c
index b79747c4b64..a1ef53c0441 100644
--- a/net/ceph/crush/mapper.c
+++ b/net/ceph/crush/mapper.c
@@ -20,6 +20,7 @@
#include <linux/crush/crush.h>
#include <linux/crush/hash.h>
+#include <linux/crush/mapper.h>
/*
* Implement the core CRUSH mapping algorithm.
@@ -32,9 +33,9 @@
* @type: storage ruleset type (user defined)
* @size: output set size
*/
-int crush_find_rule(struct crush_map *map, int ruleset, int type, int size)
+int crush_find_rule(const struct crush_map *map, int ruleset, int type, int size)
{
- int i;
+ __u32 i;
for (i = 0; i < map->max_rules; i++) {
if (map->rules[i] &&
@@ -68,11 +69,11 @@ int crush_find_rule(struct crush_map *map, int ruleset, int type, int size)
static int bucket_perm_choose(struct crush_bucket *bucket,
int x, int r)
{
- unsigned pr = r % bucket->size;
- unsigned i, s;
+ unsigned int pr = r % bucket->size;
+ unsigned int i, s;
/* start a new permutation if @x has changed */
- if (bucket->perm_x != x || bucket->perm_n == 0) {
+ if (bucket->perm_x != (__u32)x || bucket->perm_n == 0) {
dprintk("bucket %d new x=%d\n", bucket->id, x);
bucket->perm_x = x;
@@ -100,13 +101,13 @@ static int bucket_perm_choose(struct crush_bucket *bucket,
for (i = 0; i < bucket->perm_n; i++)
dprintk(" perm_choose have %d: %d\n", i, bucket->perm[i]);
while (bucket->perm_n <= pr) {
- unsigned p = bucket->perm_n;
+ unsigned int p = bucket->perm_n;
/* no point in swapping the final entry */
if (p < bucket->size - 1) {
i = crush_hash32_3(bucket->hash, x, bucket->id, p) %
(bucket->size - p);
if (i) {
- unsigned t = bucket->perm[p + i];
+ unsigned int t = bucket->perm[p + i];
bucket->perm[p + i] = bucket->perm[p];
bucket->perm[p] = t;
}
@@ -152,8 +153,8 @@ static int bucket_list_choose(struct crush_bucket_list *bucket,
return bucket->h.items[i];
}
- BUG_ON(1);
- return 0;
+ dprintk("bad list sums for bucket %d\n", bucket->h.id);
+ return bucket->h.items[0];
}
@@ -188,7 +189,7 @@ static int terminal(int x)
static int bucket_tree_choose(struct crush_bucket_tree *bucket,
int x, int r)
{
- int n, l;
+ int n;
__u32 w;
__u64 t;
@@ -196,6 +197,7 @@ static int bucket_tree_choose(struct crush_bucket_tree *bucket,
n = bucket->num_nodes >> 1;
while (!terminal(n)) {
+ int l;
/* pick point in [0, w) */
w = bucket->node_weights[n];
t = (__u64)crush_hash32_4(bucket->h.hash, x, n, r,
@@ -219,7 +221,7 @@ static int bucket_tree_choose(struct crush_bucket_tree *bucket,
static int bucket_straw_choose(struct crush_bucket_straw *bucket,
int x, int r)
{
- int i;
+ __u32 i;
int high = 0;
__u64 high_draw = 0;
__u64 draw;
@@ -239,6 +241,7 @@ static int bucket_straw_choose(struct crush_bucket_straw *bucket,
static int crush_bucket_choose(struct crush_bucket *in, int x, int r)
{
dprintk(" crush_bucket_choose %d x=%d r=%d\n", in->id, x, r);
+ BUG_ON(in->size == 0);
switch (in->alg) {
case CRUSH_BUCKET_UNIFORM:
return bucket_uniform_choose((struct crush_bucket_uniform *)in,
@@ -253,7 +256,7 @@ static int crush_bucket_choose(struct crush_bucket *in, int x, int r)
return bucket_straw_choose((struct crush_bucket_straw *)in,
x, r);
default:
- BUG_ON(1);
+ dprintk("unknown bucket %d alg %d\n", in->id, in->alg);
return in->items[0];
}
}
@@ -262,8 +265,12 @@ static int crush_bucket_choose(struct crush_bucket *in, int x, int r)
* true if device is marked "out" (failed, fully offloaded)
* of the cluster
*/
-static int is_out(struct crush_map *map, __u32 *weight, int item, int x)
+static int is_out(const struct crush_map *map,
+ const __u32 *weight, int weight_max,
+ int item, int x)
{
+ if (item >= weight_max)
+ return 1;
if (weight[item] >= 0x10000)
return 0;
if (weight[item] == 0)
@@ -275,7 +282,7 @@ static int is_out(struct crush_map *map, __u32 *weight, int item, int x)
}
/**
- * crush_choose - choose numrep distinct items of given type
+ * crush_choose_firstn - choose numrep distinct items of given type
* @map: the crush_map
* @bucket: the bucket we are choose an item from
* @x: crush input value
@@ -283,20 +290,31 @@ static int is_out(struct crush_map *map, __u32 *weight, int item, int x)
* @type: the type of item to choose
* @out: pointer to output vector
* @outpos: our position in that vector
- * @firstn: true if choosing "first n" items, false if choosing "indep"
- * @recurse_to_leaf: true if we want one device under each item of given type
+ * @tries: number of attempts to make
+ * @recurse_tries: number of attempts to have recursive chooseleaf make
+ * @local_retries: localized retries
+ * @local_fallback_retries: localized fallback retries
+ * @recurse_to_leaf: true if we want one device under each item of given type (chooseleaf instead of choose)
+ * @vary_r: pass r to recursive calls
* @out2: second output vector for leaf items (if @recurse_to_leaf)
+ * @parent_r: r value passed from the parent
*/
-static int crush_choose(struct crush_map *map,
- struct crush_bucket *bucket,
- __u32 *weight,
- int x, int numrep, int type,
- int *out, int outpos,
- int firstn, int recurse_to_leaf,
- int *out2)
+static int crush_choose_firstn(const struct crush_map *map,
+ struct crush_bucket *bucket,
+ const __u32 *weight, int weight_max,
+ int x, int numrep, int type,
+ int *out, int outpos,
+ unsigned int tries,
+ unsigned int recurse_tries,
+ unsigned int local_retries,
+ unsigned int local_fallback_retries,
+ int recurse_to_leaf,
+ unsigned int vary_r,
+ int *out2,
+ int parent_r)
{
int rep;
- int ftotal, flocal;
+ unsigned int ftotal, flocal;
int retry_descent, retry_bucket, skip_rep;
struct crush_bucket *in = bucket;
int r;
@@ -304,10 +322,12 @@ static int crush_choose(struct crush_map *map,
int item = 0;
int itemtype;
int collide, reject;
- const int orig_tries = 5; /* attempts before we fall back to search */
- dprintk("CHOOSE%s bucket %d x %d outpos %d numrep %d\n", recurse_to_leaf ? "_LEAF" : "",
- bucket->id, x, outpos, numrep);
+ dprintk("CHOOSE%s bucket %d x %d outpos %d numrep %d tries %d recurse_tries %d local_retries %d local_fallback_retries %d parent_r %d\n",
+ recurse_to_leaf ? "_LEAF" : "",
+ bucket->id, x, outpos, numrep,
+ tries, recurse_tries, local_retries, local_fallback_retries,
+ parent_r);
for (rep = outpos; rep < numrep; rep++) {
/* keep trying until we get a non-out, non-colliding item */
@@ -322,39 +342,26 @@ static int crush_choose(struct crush_map *map,
do {
collide = 0;
retry_bucket = 0;
- r = rep;
- if (in->alg == CRUSH_BUCKET_UNIFORM) {
- /* be careful */
- if (firstn || numrep >= in->size)
- /* r' = r + f_total */
- r += ftotal;
- else if (in->size % numrep == 0)
- /* r'=r+(n+1)*f_local */
- r += (numrep+1) *
- (flocal+ftotal);
- else
- /* r' = r + n*f_local */
- r += numrep * (flocal+ftotal);
- } else {
- if (firstn)
- /* r' = r + f_total */
- r += ftotal;
- else
- /* r' = r + n*f_local */
- r += numrep * (flocal+ftotal);
- }
+ r = rep + parent_r;
+ /* r' = r + f_total */
+ r += ftotal;
/* bucket choose */
if (in->size == 0) {
reject = 1;
goto reject;
}
- if (flocal >= (in->size>>1) &&
- flocal > orig_tries)
+ if (local_fallback_retries > 0 &&
+ flocal >= (in->size>>1) &&
+ flocal > local_fallback_retries)
item = bucket_perm_choose(in, x, r);
else
item = crush_bucket_choose(in, x, r);
- BUG_ON(item >= map->max_devices);
+ if (item >= map->max_devices) {
+ dprintk(" bad item %d\n", item);
+ skip_rep = 1;
+ break;
+ }
/* desired type? */
if (item < 0)
@@ -365,8 +372,12 @@ static int crush_choose(struct crush_map *map,
/* keep going? */
if (itemtype != type) {
- BUG_ON(item >= 0 ||
- (-1-item) >= map->max_buckets);
+ if (item >= 0 ||
+ (-1-item) >= map->max_buckets) {
+ dprintk(" bad item type %d\n", type);
+ skip_rep = 1;
+ break;
+ }
in = map->buckets[-1-item];
retry_bucket = 1;
continue;
@@ -381,15 +392,25 @@ static int crush_choose(struct crush_map *map,
}
reject = 0;
- if (recurse_to_leaf) {
+ if (!collide && recurse_to_leaf) {
if (item < 0) {
- if (crush_choose(map,
+ int sub_r;
+ if (vary_r)
+ sub_r = r >> (vary_r-1);
+ else
+ sub_r = 0;
+ if (crush_choose_firstn(map,
map->buckets[-1-item],
- weight,
+ weight, weight_max,
x, outpos+1, 0,
out2, outpos,
- firstn, 0,
- NULL) <= outpos)
+ recurse_tries, 0,
+ local_retries,
+ local_fallback_retries,
+ 0,
+ vary_r,
+ NULL,
+ sub_r) <= outpos)
/* didn't get leaf */
reject = 1;
} else {
@@ -402,6 +423,7 @@ static int crush_choose(struct crush_map *map,
/* out? */
if (itemtype == 0)
reject = is_out(map, weight,
+ weight_max,
item, x);
else
reject = 0;
@@ -412,20 +434,21 @@ reject:
ftotal++;
flocal++;
- if (collide && flocal < 3)
+ if (collide && flocal <= local_retries)
/* retry locally a few times */
retry_bucket = 1;
- else if (flocal < in->size + orig_tries)
+ else if (local_fallback_retries > 0 &&
+ flocal <= in->size + local_fallback_retries)
/* exhaustive bucket search */
retry_bucket = 1;
- else if (ftotal < 20)
+ else if (ftotal < tries)
/* then retry descent */
retry_descent = 1;
else
/* else give up */
skip_rep = 1;
dprintk(" reject %d collide %d "
- "ftotal %d flocal %d\n",
+ "ftotal %u flocal %u\n",
reject, collide, ftotal,
flocal);
}
@@ -448,24 +471,179 @@ reject:
/**
+ * crush_choose_indep: alternative breadth-first positionally stable mapping
+ *
+ */
+static void crush_choose_indep(const struct crush_map *map,
+ struct crush_bucket *bucket,
+ const __u32 *weight, int weight_max,
+ int x, int left, int numrep, int type,
+ int *out, int outpos,
+ unsigned int tries,
+ unsigned int recurse_tries,
+ int recurse_to_leaf,
+ int *out2,
+ int parent_r)
+{
+ struct crush_bucket *in = bucket;
+ int endpos = outpos + left;
+ int rep;
+ unsigned int ftotal;
+ int r;
+ int i;
+ int item = 0;
+ int itemtype;
+ int collide;
+
+ dprintk("CHOOSE%s INDEP bucket %d x %d outpos %d numrep %d\n", recurse_to_leaf ? "_LEAF" : "",
+ bucket->id, x, outpos, numrep);
+
+ /* initially my result is undefined */
+ for (rep = outpos; rep < endpos; rep++) {
+ out[rep] = CRUSH_ITEM_UNDEF;
+ if (out2)
+ out2[rep] = CRUSH_ITEM_UNDEF;
+ }
+
+ for (ftotal = 0; left > 0 && ftotal < tries; ftotal++) {
+ for (rep = outpos; rep < endpos; rep++) {
+ if (out[rep] != CRUSH_ITEM_UNDEF)
+ continue;
+
+ in = bucket; /* initial bucket */
+
+ /* choose through intervening buckets */
+ for (;;) {
+ /* note: we base the choice on the position
+ * even in the nested call. that means that
+ * if the first layer chooses the same bucket
+ * in a different position, we will tend to
+ * choose a different item in that bucket.
+ * this will involve more devices in data
+ * movement and tend to distribute the load.
+ */
+ r = rep + parent_r;
+
+ /* be careful */
+ if (in->alg == CRUSH_BUCKET_UNIFORM &&
+ in->size % numrep == 0)
+ /* r'=r+(n+1)*f_total */
+ r += (numrep+1) * ftotal;
+ else
+ /* r' = r + n*f_total */
+ r += numrep * ftotal;
+
+ /* bucket choose */
+ if (in->size == 0) {
+ dprintk(" empty bucket\n");
+ break;
+ }
+
+ item = crush_bucket_choose(in, x, r);
+ if (item >= map->max_devices) {
+ dprintk(" bad item %d\n", item);
+ out[rep] = CRUSH_ITEM_NONE;
+ if (out2)
+ out2[rep] = CRUSH_ITEM_NONE;
+ left--;
+ break;
+ }
+
+ /* desired type? */
+ if (item < 0)
+ itemtype = map->buckets[-1-item]->type;
+ else
+ itemtype = 0;
+ dprintk(" item %d type %d\n", item, itemtype);
+
+ /* keep going? */
+ if (itemtype != type) {
+ if (item >= 0 ||
+ (-1-item) >= map->max_buckets) {
+ dprintk(" bad item type %d\n", type);
+ out[rep] = CRUSH_ITEM_NONE;
+ if (out2)
+ out2[rep] =
+ CRUSH_ITEM_NONE;
+ left--;
+ break;
+ }
+ in = map->buckets[-1-item];
+ continue;
+ }
+
+ /* collision? */
+ collide = 0;
+ for (i = outpos; i < endpos; i++) {
+ if (out[i] == item) {
+ collide = 1;
+ break;
+ }
+ }
+ if (collide)
+ break;
+
+ if (recurse_to_leaf) {
+ if (item < 0) {
+ crush_choose_indep(map,
+ map->buckets[-1-item],
+ weight, weight_max,
+ x, 1, numrep, 0,
+ out2, rep,
+ recurse_tries, 0,
+ 0, NULL, r);
+ if (out2[rep] == CRUSH_ITEM_NONE) {
+ /* placed nothing; no leaf */
+ break;
+ }
+ } else {
+ /* we already have a leaf! */
+ out2[rep] = item;
+ }
+ }
+
+ /* out? */
+ if (itemtype == 0 &&
+ is_out(map, weight, weight_max, item, x))
+ break;
+
+ /* yay! */
+ out[rep] = item;
+ left--;
+ break;
+ }
+ }
+ }
+ for (rep = outpos; rep < endpos; rep++) {
+ if (out[rep] == CRUSH_ITEM_UNDEF) {
+ out[rep] = CRUSH_ITEM_NONE;
+ }
+ if (out2 && out2[rep] == CRUSH_ITEM_UNDEF) {
+ out2[rep] = CRUSH_ITEM_NONE;
+ }
+ }
+}
+
+/**
* crush_do_rule - calculate a mapping with the given input and rule
* @map: the crush_map
* @ruleno: the rule id
* @x: hash input
* @result: pointer to result vector
* @result_max: maximum result size
- * @force: force initial replica choice; -1 for none
+ * @weight: weight vector (for map leaves)
+ * @weight_max: size of weight vector
+ * @scratch: scratch vector for private use; must be >= 3 * result_max
*/
-int crush_do_rule(struct crush_map *map,
+int crush_do_rule(const struct crush_map *map,
int ruleno, int x, int *result, int result_max,
- int force, __u32 *weight)
+ const __u32 *weight, int weight_max,
+ int *scratch)
{
int result_len;
- int force_context[CRUSH_MAX_DEPTH];
- int force_pos = -1;
- int a[CRUSH_MAX_SET];
- int b[CRUSH_MAX_SET];
- int c[CRUSH_MAX_SET];
+ int *a = scratch;
+ int *b = scratch + result_max;
+ int *c = scratch + result_max*2;
int recurse_to_leaf;
int *w;
int wsize = 0;
@@ -473,67 +651,83 @@ int crush_do_rule(struct crush_map *map,
int osize;
int *tmp;
struct crush_rule *rule;
- int step;
+ __u32 step;
int i, j;
int numrep;
- int firstn;
+ /*
+ * the original choose_total_tries value was off by one (it
+ * counted "retries" and not "tries"). add one.
+ */
+ int choose_tries = map->choose_total_tries + 1;
+ int choose_leaf_tries = 0;
+ /*
+ * the local tries values were counted as "retries", though,
+ * and need no adjustment
+ */
+ int choose_local_retries = map->choose_local_tries;
+ int choose_local_fallback_retries = map->choose_local_fallback_tries;
- BUG_ON(ruleno >= map->max_rules);
+ int vary_r = map->chooseleaf_vary_r;
+
+ if ((__u32)ruleno >= map->max_rules) {
+ dprintk(" bad ruleno %d\n", ruleno);
+ return 0;
+ }
rule = map->rules[ruleno];
result_len = 0;
w = a;
o = b;
- /*
- * determine hierarchical context of force, if any. note
- * that this may or may not correspond to the specific types
- * referenced by the crush rule.
- */
- if (force >= 0 &&
- force < map->max_devices &&
- map->device_parents[force] != 0 &&
- !is_out(map, weight, force, x)) {
- while (1) {
- force_context[++force_pos] = force;
- if (force >= 0)
- force = map->device_parents[force];
- else
- force = map->bucket_parents[-1-force];
- if (force == 0)
- break;
- }
- }
-
for (step = 0; step < rule->len; step++) {
- firstn = 0;
- switch (rule->steps[step].op) {
+ int firstn = 0;
+ struct crush_rule_step *curstep = &rule->steps[step];
+
+ switch (curstep->op) {
case CRUSH_RULE_TAKE:
- w[0] = rule->steps[step].arg1;
+ w[0] = curstep->arg1;
+ wsize = 1;
+ break;
- /* find position in force_context/hierarchy */
- while (force_pos >= 0 &&
- force_context[force_pos] != w[0])
- force_pos--;
- /* and move past it */
- if (force_pos >= 0)
- force_pos--;
+ case CRUSH_RULE_SET_CHOOSE_TRIES:
+ if (curstep->arg1 > 0)
+ choose_tries = curstep->arg1;
+ break;
- wsize = 1;
+ case CRUSH_RULE_SET_CHOOSELEAF_TRIES:
+ if (curstep->arg1 > 0)
+ choose_leaf_tries = curstep->arg1;
+ break;
+
+ case CRUSH_RULE_SET_CHOOSE_LOCAL_TRIES:
+ if (curstep->arg1 >= 0)
+ choose_local_retries = curstep->arg1;
+ break;
+
+ case CRUSH_RULE_SET_CHOOSE_LOCAL_FALLBACK_TRIES:
+ if (curstep->arg1 >= 0)
+ choose_local_fallback_retries = curstep->arg1;
break;
- case CRUSH_RULE_CHOOSE_LEAF_FIRSTN:
+ case CRUSH_RULE_SET_CHOOSELEAF_VARY_R:
+ if (curstep->arg1 >= 0)
+ vary_r = curstep->arg1;
+ break;
+
+ case CRUSH_RULE_CHOOSELEAF_FIRSTN:
case CRUSH_RULE_CHOOSE_FIRSTN:
firstn = 1;
- case CRUSH_RULE_CHOOSE_LEAF_INDEP:
+ /* fall through */
+ case CRUSH_RULE_CHOOSELEAF_INDEP:
case CRUSH_RULE_CHOOSE_INDEP:
- BUG_ON(wsize == 0);
+ if (wsize == 0)
+ break;
recurse_to_leaf =
- rule->steps[step].op ==
- CRUSH_RULE_CHOOSE_LEAF_FIRSTN ||
- rule->steps[step].op ==
- CRUSH_RULE_CHOOSE_LEAF_INDEP;
+ curstep->op ==
+ CRUSH_RULE_CHOOSELEAF_FIRSTN ||
+ curstep->op ==
+ CRUSH_RULE_CHOOSELEAF_INDEP;
/* reset output */
osize = 0;
@@ -544,42 +738,60 @@ int crush_do_rule(struct crush_map *map,
* basically, numrep <= 0 means relative to
* the provided result_max
*/
- numrep = rule->steps[step].arg1;
+ numrep = curstep->arg1;
if (numrep <= 0) {
numrep += result_max;
if (numrep <= 0)
continue;
}
j = 0;
- if (osize == 0 && force_pos >= 0) {
- /* skip any intermediate types */
- while (force_pos &&
- force_context[force_pos] < 0 &&
- rule->steps[step].arg2 !=
- map->buckets[-1 -
- force_context[force_pos]]->type)
- force_pos--;
- o[osize] = force_context[force_pos];
- if (recurse_to_leaf)
- c[osize] = force_context[0];
- j++;
- force_pos--;
+ if (firstn) {
+ int recurse_tries;
+ if (choose_leaf_tries)
+ recurse_tries =
+ choose_leaf_tries;
+ else if (map->chooseleaf_descend_once)
+ recurse_tries = 1;
+ else
+ recurse_tries = choose_tries;
+ osize += crush_choose_firstn(
+ map,
+ map->buckets[-1-w[i]],
+ weight, weight_max,
+ x, numrep,
+ curstep->arg2,
+ o+osize, j,
+ choose_tries,
+ recurse_tries,
+ choose_local_retries,
+ choose_local_fallback_retries,
+ recurse_to_leaf,
+ vary_r,
+ c+osize,
+ 0);
+ } else {
+ crush_choose_indep(
+ map,
+ map->buckets[-1-w[i]],
+ weight, weight_max,
+ x, numrep, numrep,
+ curstep->arg2,
+ o+osize, j,
+ choose_tries,
+ choose_leaf_tries ?
+ choose_leaf_tries : 1,
+ recurse_to_leaf,
+ c+osize,
+ 0);
+ osize += numrep;
}
- osize += crush_choose(map,
- map->buckets[-1-w[i]],
- weight,
- x, numrep,
- rule->steps[step].arg2,
- o+osize, j,
- firstn,
- recurse_to_leaf, c+osize);
}
if (recurse_to_leaf)
/* copy final _leaf_ values to output set */
memcpy(o, c, osize*sizeof(*o));
- /* swap t and w arrays */
+ /* swap o and w arrays */
tmp = o;
o = w;
w = tmp;
@@ -596,7 +808,9 @@ int crush_do_rule(struct crush_map *map,
break;
default:
- BUG_ON(1);
+ dprintk(" unknown op %d at step %d\n",
+ curstep->op, step);
+ break;
}
}
return result_len;
diff --git a/net/ceph/crypto.c b/net/ceph/crypto.c
index b780cb7947d..6e7a236525b 100644
--- a/net/ceph/crypto.c
+++ b/net/ceph/crypto.c
@@ -423,14 +423,16 @@ int ceph_encrypt2(struct ceph_crypto_key *secret, void *dst, size_t *dst_len,
}
}
-int ceph_key_instantiate(struct key *key, const void *data, size_t datalen)
+static int ceph_key_instantiate(struct key *key,
+ struct key_preparsed_payload *prep)
{
struct ceph_crypto_key *ckey;
+ size_t datalen = prep->datalen;
int ret;
void *p;
ret = -EINVAL;
- if (datalen <= 0 || datalen > 32767 || !data)
+ if (datalen <= 0 || datalen > 32767 || !prep->data)
goto err;
ret = key_payload_reserve(key, datalen);
@@ -443,8 +445,8 @@ int ceph_key_instantiate(struct key *key, const void *data, size_t datalen)
goto err;
/* TODO ceph_crypto_key_decode should really take const input */
- p = (void *)data;
- ret = ceph_crypto_key_decode(ckey, &p, (char*)data+datalen);
+ p = (void *)prep->data;
+ ret = ceph_crypto_key_decode(ckey, &p, (char*)prep->data+datalen);
if (ret < 0)
goto err_ckey;
@@ -457,15 +459,16 @@ err:
return ret;
}
-int ceph_key_match(const struct key *key, const void *description)
+static int ceph_key_match(const struct key *key, const void *description)
{
return strcmp(key->description, description) == 0;
}
-void ceph_key_destroy(struct key *key) {
+static void ceph_key_destroy(struct key *key) {
struct ceph_crypto_key *ckey = key->payload.data;
ceph_crypto_key_destroy(ckey);
+ kfree(ckey);
}
struct key_type key_type_ceph = {
diff --git a/net/ceph/crypto.h b/net/ceph/crypto.h
index 1919d1550d7..d1498224c49 100644
--- a/net/ceph/crypto.h
+++ b/net/ceph/crypto.h
@@ -16,37 +16,36 @@ struct ceph_crypto_key {
static inline void ceph_crypto_key_destroy(struct ceph_crypto_key *key)
{
- kfree(key->key);
+ if (key)
+ kfree(key->key);
}
-extern int ceph_crypto_key_clone(struct ceph_crypto_key *dst,
- const struct ceph_crypto_key *src);
-extern int ceph_crypto_key_encode(struct ceph_crypto_key *key,
- void **p, void *end);
-extern int ceph_crypto_key_decode(struct ceph_crypto_key *key,
- void **p, void *end);
-extern int ceph_crypto_key_unarmor(struct ceph_crypto_key *key, const char *in);
+int ceph_crypto_key_clone(struct ceph_crypto_key *dst,
+ const struct ceph_crypto_key *src);
+int ceph_crypto_key_encode(struct ceph_crypto_key *key, void **p, void *end);
+int ceph_crypto_key_decode(struct ceph_crypto_key *key, void **p, void *end);
+int ceph_crypto_key_unarmor(struct ceph_crypto_key *key, const char *in);
/* crypto.c */
-extern int ceph_decrypt(struct ceph_crypto_key *secret,
- void *dst, size_t *dst_len,
- const void *src, size_t src_len);
-extern int ceph_encrypt(struct ceph_crypto_key *secret,
- void *dst, size_t *dst_len,
- const void *src, size_t src_len);
-extern int ceph_decrypt2(struct ceph_crypto_key *secret,
- void *dst1, size_t *dst1_len,
- void *dst2, size_t *dst2_len,
- const void *src, size_t src_len);
-extern int ceph_encrypt2(struct ceph_crypto_key *secret,
- void *dst, size_t *dst_len,
- const void *src1, size_t src1_len,
- const void *src2, size_t src2_len);
-extern int ceph_crypto_init(void);
-extern void ceph_crypto_shutdown(void);
+int ceph_decrypt(struct ceph_crypto_key *secret,
+ void *dst, size_t *dst_len,
+ const void *src, size_t src_len);
+int ceph_encrypt(struct ceph_crypto_key *secret,
+ void *dst, size_t *dst_len,
+ const void *src, size_t src_len);
+int ceph_decrypt2(struct ceph_crypto_key *secret,
+ void *dst1, size_t *dst1_len,
+ void *dst2, size_t *dst2_len,
+ const void *src, size_t src_len);
+int ceph_encrypt2(struct ceph_crypto_key *secret,
+ void *dst, size_t *dst_len,
+ const void *src1, size_t src1_len,
+ const void *src2, size_t src2_len);
+int ceph_crypto_init(void);
+void ceph_crypto_shutdown(void);
/* armor.c */
-extern int ceph_armor(char *dst, const char *src, const char *end);
-extern int ceph_unarmor(char *dst, const char *src, const char *end);
+int ceph_armor(char *dst, const char *src, const char *end);
+int ceph_unarmor(char *dst, const char *src, const char *end);
#endif
diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c
index 27d4ea315d1..d1a62c69a9f 100644
--- a/net/ceph/debugfs.c
+++ b/net/ceph/debugfs.c
@@ -53,34 +53,55 @@ static int osdmap_show(struct seq_file *s, void *p)
{
int i;
struct ceph_client *client = s->private;
+ struct ceph_osdmap *map = client->osdc.osdmap;
struct rb_node *n;
- if (client->osdc.osdmap == NULL)
+ if (map == NULL)
return 0;
- seq_printf(s, "epoch %d\n", client->osdc.osdmap->epoch);
+
+ seq_printf(s, "epoch %d\n", map->epoch);
seq_printf(s, "flags%s%s\n",
- (client->osdc.osdmap->flags & CEPH_OSDMAP_NEARFULL) ?
- " NEARFULL" : "",
- (client->osdc.osdmap->flags & CEPH_OSDMAP_FULL) ?
- " FULL" : "");
- for (n = rb_first(&client->osdc.osdmap->pg_pools); n; n = rb_next(n)) {
+ (map->flags & CEPH_OSDMAP_NEARFULL) ? " NEARFULL" : "",
+ (map->flags & CEPH_OSDMAP_FULL) ? " FULL" : "");
+
+ for (n = rb_first(&map->pg_pools); n; n = rb_next(n)) {
struct ceph_pg_pool_info *pool =
rb_entry(n, struct ceph_pg_pool_info, node);
- seq_printf(s, "pg_pool %d pg_num %d / %d, lpg_num %d / %d\n",
- pool->id, pool->v.pg_num, pool->pg_num_mask,
- pool->v.lpg_num, pool->lpg_num_mask);
+
+ seq_printf(s, "pool %lld pg_num %u (%d) read_tier %lld write_tier %lld\n",
+ pool->id, pool->pg_num, pool->pg_num_mask,
+ pool->read_tier, pool->write_tier);
}
- for (i = 0; i < client->osdc.osdmap->max_osd; i++) {
- struct ceph_entity_addr *addr =
- &client->osdc.osdmap->osd_addr[i];
- int state = client->osdc.osdmap->osd_state[i];
+ for (i = 0; i < map->max_osd; i++) {
+ struct ceph_entity_addr *addr = &map->osd_addr[i];
+ int state = map->osd_state[i];
char sb[64];
- seq_printf(s, "\tosd%d\t%s\t%3d%%\t(%s)\n",
+ seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n",
i, ceph_pr_addr(&addr->in_addr),
- ((client->osdc.osdmap->osd_weight[i]*100) >> 16),
- ceph_osdmap_state_str(sb, sizeof(sb), state));
+ ((map->osd_weight[i]*100) >> 16),
+ ceph_osdmap_state_str(sb, sizeof(sb), state),
+ ((ceph_get_primary_affinity(map, i)*100) >> 16));
}
+ for (n = rb_first(&map->pg_temp); n; n = rb_next(n)) {
+ struct ceph_pg_mapping *pg =
+ rb_entry(n, struct ceph_pg_mapping, node);
+
+ seq_printf(s, "pg_temp %llu.%x [", pg->pgid.pool,
+ pg->pgid.seed);
+ for (i = 0; i < pg->pg_temp.len; i++)
+ seq_printf(s, "%s%d", (i == 0 ? "" : ","),
+ pg->pg_temp.osds[i]);
+ seq_printf(s, "]\n");
+ }
+ for (n = rb_first(&map->primary_temp); n; n = rb_next(n)) {
+ struct ceph_pg_mapping *pg =
+ rb_entry(n, struct ceph_pg_mapping, node);
+
+ seq_printf(s, "primary_temp %llu.%x %d\n", pg->pgid.pool,
+ pg->pgid.seed, pg->primary_temp.osd);
+ }
+
return 0;
}
@@ -94,9 +115,9 @@ static int monc_show(struct seq_file *s, void *p)
mutex_lock(&monc->mutex);
if (monc->have_mdsmap)
- seq_printf(s, "have mdsmap %u\n", (unsigned)monc->have_mdsmap);
+ seq_printf(s, "have mdsmap %u\n", (unsigned int)monc->have_mdsmap);
if (monc->have_osdmap)
- seq_printf(s, "have osdmap %u\n", (unsigned)monc->have_osdmap);
+ seq_printf(s, "have osdmap %u\n", (unsigned int)monc->have_osdmap);
if (monc->want_next_osdmap)
seq_printf(s, "want next osdmap\n");
@@ -105,9 +126,13 @@ static int monc_show(struct seq_file *s, void *p)
req = rb_entry(rp, struct ceph_mon_generic_request, node);
op = le16_to_cpu(req->request->hdr.type);
if (op == CEPH_MSG_STATFS)
- seq_printf(s, "%lld statfs\n", req->tid);
+ seq_printf(s, "%llu statfs\n", req->tid);
+ else if (op == CEPH_MSG_POOLOP)
+ seq_printf(s, "%llu poolop\n", req->tid);
+ else if (op == CEPH_MSG_MON_GET_VERSION)
+ seq_printf(s, "%llu mon_get_version", req->tid);
else
- seq_printf(s, "%lld unknown\n", req->tid);
+ seq_printf(s, "%llu unknown\n", req->tid);
}
mutex_unlock(&monc->mutex);
@@ -123,38 +148,28 @@ static int osdc_show(struct seq_file *s, void *pp)
mutex_lock(&osdc->request_mutex);
for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
struct ceph_osd_request *req;
- struct ceph_osd_request_head *head;
- struct ceph_osd_op *op;
- int num_ops;
- int opcode, olen;
- int i;
+ unsigned int i;
+ int opcode;
req = rb_entry(p, struct ceph_osd_request, r_node);
- seq_printf(s, "%lld\tosd%d\t%d.%x\t", req->r_tid,
+ seq_printf(s, "%lld\tosd%d\t%lld.%x\t", req->r_tid,
req->r_osd ? req->r_osd->o_osd : -1,
- le32_to_cpu(req->r_pgid.pool),
- le16_to_cpu(req->r_pgid.ps));
+ req->r_pgid.pool, req->r_pgid.seed);
- head = req->r_request->front.iov_base;
- op = (void *)(head + 1);
-
- num_ops = le16_to_cpu(head->num_ops);
- olen = le32_to_cpu(head->object_len);
- seq_printf(s, "%.*s", olen,
- (const char *)(head->ops + num_ops));
+ seq_printf(s, "%.*s", req->r_base_oid.name_len,
+ req->r_base_oid.name);
if (req->r_reassert_version.epoch)
seq_printf(s, "\t%u'%llu",
- (unsigned)le32_to_cpu(req->r_reassert_version.epoch),
+ (unsigned int)le32_to_cpu(req->r_reassert_version.epoch),
le64_to_cpu(req->r_reassert_version.version));
else
seq_printf(s, "\t");
- for (i = 0; i < num_ops; i++) {
- opcode = le16_to_cpu(op->op);
+ for (i = 0; i < req->r_num_ops; i++) {
+ opcode = req->r_ops[i].op;
seq_printf(s, "\t%s", ceph_osd_op_name(opcode));
- op++;
}
seq_printf(s, "\n");
@@ -189,6 +204,9 @@ int ceph_debugfs_client_init(struct ceph_client *client)
snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,
client->monc.auth->global_id);
+ dout("ceph_debugfs_client_init %p %s\n", client, name);
+
+ BUG_ON(client->debugfs_dir);
client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);
if (!client->debugfs_dir)
goto out;
@@ -234,6 +252,7 @@ out:
void ceph_debugfs_client_cleanup(struct ceph_client *client)
{
+ dout("ceph_debugfs_client_cleanup %p\n", client);
debugfs_remove(client->debugfs_osdmap);
debugfs_remove(client->debugfs_monmap);
debugfs_remove(client->osdc.debugfs_file);
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index ad5b70801f3..1948d592aa5 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -9,17 +9,22 @@
#include <linux/slab.h>
#include <linux/socket.h>
#include <linux/string.h>
+#ifdef CONFIG_BLOCK
#include <linux/bio.h>
-#include <linux/blkdev.h>
+#endif /* CONFIG_BLOCK */
#include <linux/dns_resolver.h>
#include <net/tcp.h>
+#include <linux/ceph/ceph_features.h>
#include <linux/ceph/libceph.h>
#include <linux/ceph/messenger.h>
#include <linux/ceph/decode.h>
#include <linux/ceph/pagelist.h>
#include <linux/export.h>
+#define list_entry_next(pos, member) \
+ list_entry(pos->member.next, typeof(*pos), member)
+
/*
* Ceph uses the messenger to exchange ceph_msg messages with other
* hosts in the system. The messenger provides ordered and reliable
@@ -29,6 +34,130 @@
* the sender.
*/
+/*
+ * We track the state of the socket on a given connection using
+ * values defined below. The transition to a new socket state is
+ * handled by a function which verifies we aren't coming from an
+ * unexpected state.
+ *
+ * --------
+ * | NEW* | transient initial state
+ * --------
+ * | con_sock_state_init()
+ * v
+ * ----------
+ * | CLOSED | initialized, but no socket (and no
+ * ---------- TCP connection)
+ * ^ \
+ * | \ con_sock_state_connecting()
+ * | ----------------------
+ * | \
+ * + con_sock_state_closed() \
+ * |+--------------------------- \
+ * | \ \ \
+ * | ----------- \ \
+ * | | CLOSING | socket event; \ \
+ * | ----------- await close \ \
+ * | ^ \ |
+ * | | \ |
+ * | + con_sock_state_closing() \ |
+ * | / \ | |
+ * | / --------------- | |
+ * | / \ v v
+ * | / --------------
+ * | / -----------------| CONNECTING | socket created, TCP
+ * | | / -------------- connect initiated
+ * | | | con_sock_state_connected()
+ * | | v
+ * -------------
+ * | CONNECTED | TCP connection established
+ * -------------
+ *
+ * State values for ceph_connection->sock_state; NEW is assumed to be 0.
+ */
+
+#define CON_SOCK_STATE_NEW 0 /* -> CLOSED */
+#define CON_SOCK_STATE_CLOSED 1 /* -> CONNECTING */
+#define CON_SOCK_STATE_CONNECTING 2 /* -> CONNECTED or -> CLOSING */
+#define CON_SOCK_STATE_CONNECTED 3 /* -> CLOSING or -> CLOSED */
+#define CON_SOCK_STATE_CLOSING 4 /* -> CLOSED */
+
+/*
+ * connection states
+ */
+#define CON_STATE_CLOSED 1 /* -> PREOPEN */
+#define CON_STATE_PREOPEN 2 /* -> CONNECTING, CLOSED */
+#define CON_STATE_CONNECTING 3 /* -> NEGOTIATING, CLOSED */
+#define CON_STATE_NEGOTIATING 4 /* -> OPEN, CLOSED */
+#define CON_STATE_OPEN 5 /* -> STANDBY, CLOSED */
+#define CON_STATE_STANDBY 6 /* -> PREOPEN, CLOSED */
+
+/*
+ * ceph_connection flag bits
+ */
+#define CON_FLAG_LOSSYTX 0 /* we can close channel or drop
+ * messages on errors */
+#define CON_FLAG_KEEPALIVE_PENDING 1 /* we need to send a keepalive */
+#define CON_FLAG_WRITE_PENDING 2 /* we have data ready to send */
+#define CON_FLAG_SOCK_CLOSED 3 /* socket state changed to closed */
+#define CON_FLAG_BACKOFF 4 /* need to retry queuing delayed work */
+
+static bool con_flag_valid(unsigned long con_flag)
+{
+ switch (con_flag) {
+ case CON_FLAG_LOSSYTX:
+ case CON_FLAG_KEEPALIVE_PENDING:
+ case CON_FLAG_WRITE_PENDING:
+ case CON_FLAG_SOCK_CLOSED:
+ case CON_FLAG_BACKOFF:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static void con_flag_clear(struct ceph_connection *con, unsigned long con_flag)
+{
+ BUG_ON(!con_flag_valid(con_flag));
+
+ clear_bit(con_flag, &con->flags);
+}
+
+static void con_flag_set(struct ceph_connection *con, unsigned long con_flag)
+{
+ BUG_ON(!con_flag_valid(con_flag));
+
+ set_bit(con_flag, &con->flags);
+}
+
+static bool con_flag_test(struct ceph_connection *con, unsigned long con_flag)
+{
+ BUG_ON(!con_flag_valid(con_flag));
+
+ return test_bit(con_flag, &con->flags);
+}
+
+static bool con_flag_test_and_clear(struct ceph_connection *con,
+ unsigned long con_flag)
+{
+ BUG_ON(!con_flag_valid(con_flag));
+
+ return test_and_clear_bit(con_flag, &con->flags);
+}
+
+static bool con_flag_test_and_set(struct ceph_connection *con,
+ unsigned long con_flag)
+{
+ BUG_ON(!con_flag_valid(con_flag));
+
+ return test_and_set_bit(con_flag, &con->flags);
+}
+
+/* Slab caches for frequently-allocated structures */
+
+static struct kmem_cache *ceph_msg_cache;
+static struct kmem_cache *ceph_msg_data_cache;
+
/* static tag bytes (protocol control messages) */
static char tag_msg = CEPH_MSGR_TAG_MSG;
static char tag_ack = CEPH_MSGR_TAG_ACK;
@@ -38,48 +167,54 @@ static char tag_keepalive = CEPH_MSGR_TAG_KEEPALIVE;
static struct lock_class_key socket_class;
#endif
+/*
+ * When skipping (ignoring) a block of input we read it into a "skip
+ * buffer," which is this many bytes in size.
+ */
+#define SKIP_BUF_SIZE 1024
static void queue_con(struct ceph_connection *con);
static void con_work(struct work_struct *);
-static void ceph_fault(struct ceph_connection *con);
+static void con_fault(struct ceph_connection *con);
/*
- * nicely render a sockaddr as a string.
+ * Nicely render a sockaddr as a string. An array of formatted
+ * strings is used, to approximate reentrancy.
*/
-#define MAX_ADDR_STR 20
-#define MAX_ADDR_STR_LEN 60
-static char addr_str[MAX_ADDR_STR][MAX_ADDR_STR_LEN];
-static DEFINE_SPINLOCK(addr_str_lock);
-static int last_addr_str;
+#define ADDR_STR_COUNT_LOG 5 /* log2(# address strings in array) */
+#define ADDR_STR_COUNT (1 << ADDR_STR_COUNT_LOG)
+#define ADDR_STR_COUNT_MASK (ADDR_STR_COUNT - 1)
+#define MAX_ADDR_STR_LEN 64 /* 54 is enough */
+
+static char addr_str[ADDR_STR_COUNT][MAX_ADDR_STR_LEN];
+static atomic_t addr_str_seq = ATOMIC_INIT(0);
+
+static struct page *zero_page; /* used in certain error cases */
const char *ceph_pr_addr(const struct sockaddr_storage *ss)
{
int i;
char *s;
- struct sockaddr_in *in4 = (void *)ss;
- struct sockaddr_in6 *in6 = (void *)ss;
-
- spin_lock(&addr_str_lock);
- i = last_addr_str++;
- if (last_addr_str == MAX_ADDR_STR)
- last_addr_str = 0;
- spin_unlock(&addr_str_lock);
+ struct sockaddr_in *in4 = (struct sockaddr_in *) ss;
+ struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) ss;
+
+ i = atomic_inc_return(&addr_str_seq) & ADDR_STR_COUNT_MASK;
s = addr_str[i];
switch (ss->ss_family) {
case AF_INET:
- snprintf(s, MAX_ADDR_STR_LEN, "%pI4:%u", &in4->sin_addr,
- (unsigned int)ntohs(in4->sin_port));
+ snprintf(s, MAX_ADDR_STR_LEN, "%pI4:%hu", &in4->sin_addr,
+ ntohs(in4->sin_port));
break;
case AF_INET6:
- snprintf(s, MAX_ADDR_STR_LEN, "[%pI6c]:%u", &in6->sin6_addr,
- (unsigned int)ntohs(in6->sin6_port));
+ snprintf(s, MAX_ADDR_STR_LEN, "[%pI6c]:%hu", &in6->sin6_addr,
+ ntohs(in6->sin6_port));
break;
default:
- snprintf(s, MAX_ADDR_STR_LEN, "(unknown sockaddr family %d)",
- (int)ss->ss_family);
+ snprintf(s, MAX_ADDR_STR_LEN, "(unknown sockaddr family %hu)",
+ ss->ss_family);
}
return s;
@@ -95,22 +230,83 @@ static void encode_my_addr(struct ceph_messenger *msgr)
/*
* work queue for all reading and writing to/from the socket.
*/
-struct workqueue_struct *ceph_msgr_wq;
+static struct workqueue_struct *ceph_msgr_wq;
-int ceph_msgr_init(void)
+static int ceph_msgr_slab_init(void)
{
- ceph_msgr_wq = alloc_workqueue("ceph-msgr", WQ_NON_REENTRANT, 0);
- if (!ceph_msgr_wq) {
- pr_err("msgr_init failed to create workqueue\n");
+ BUG_ON(ceph_msg_cache);
+ ceph_msg_cache = kmem_cache_create("ceph_msg",
+ sizeof (struct ceph_msg),
+ __alignof__(struct ceph_msg), 0, NULL);
+
+ if (!ceph_msg_cache)
return -ENOMEM;
+
+ BUG_ON(ceph_msg_data_cache);
+ ceph_msg_data_cache = kmem_cache_create("ceph_msg_data",
+ sizeof (struct ceph_msg_data),
+ __alignof__(struct ceph_msg_data),
+ 0, NULL);
+ if (ceph_msg_data_cache)
+ return 0;
+
+ kmem_cache_destroy(ceph_msg_cache);
+ ceph_msg_cache = NULL;
+
+ return -ENOMEM;
+}
+
+static void ceph_msgr_slab_exit(void)
+{
+ BUG_ON(!ceph_msg_data_cache);
+ kmem_cache_destroy(ceph_msg_data_cache);
+ ceph_msg_data_cache = NULL;
+
+ BUG_ON(!ceph_msg_cache);
+ kmem_cache_destroy(ceph_msg_cache);
+ ceph_msg_cache = NULL;
+}
+
+static void _ceph_msgr_exit(void)
+{
+ if (ceph_msgr_wq) {
+ destroy_workqueue(ceph_msgr_wq);
+ ceph_msgr_wq = NULL;
}
- return 0;
+
+ ceph_msgr_slab_exit();
+
+ BUG_ON(zero_page == NULL);
+ kunmap(zero_page);
+ page_cache_release(zero_page);
+ zero_page = NULL;
+}
+
+int ceph_msgr_init(void)
+{
+ BUG_ON(zero_page != NULL);
+ zero_page = ZERO_PAGE(0);
+ page_cache_get(zero_page);
+
+ if (ceph_msgr_slab_init())
+ return -ENOMEM;
+
+ ceph_msgr_wq = alloc_workqueue("ceph-msgr", 0, 0);
+ if (ceph_msgr_wq)
+ return 0;
+
+ pr_err("msgr_init failed to create workqueue\n");
+ _ceph_msgr_exit();
+
+ return -ENOMEM;
}
EXPORT_SYMBOL(ceph_msgr_init);
void ceph_msgr_exit(void)
{
- destroy_workqueue(ceph_msgr_wq);
+ BUG_ON(ceph_msgr_wq == NULL);
+
+ _ceph_msgr_exit();
}
EXPORT_SYMBOL(ceph_msgr_exit);
@@ -120,70 +316,134 @@ void ceph_msgr_flush(void)
}
EXPORT_SYMBOL(ceph_msgr_flush);
+/* Connection socket state transition functions */
+
+static void con_sock_state_init(struct ceph_connection *con)
+{
+ int old_state;
+
+ old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CLOSED);
+ if (WARN_ON(old_state != CON_SOCK_STATE_NEW))
+ printk("%s: unexpected old state %d\n", __func__, old_state);
+ dout("%s con %p sock %d -> %d\n", __func__, con, old_state,
+ CON_SOCK_STATE_CLOSED);
+}
+
+static void con_sock_state_connecting(struct ceph_connection *con)
+{
+ int old_state;
+
+ old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CONNECTING);
+ if (WARN_ON(old_state != CON_SOCK_STATE_CLOSED))
+ printk("%s: unexpected old state %d\n", __func__, old_state);
+ dout("%s con %p sock %d -> %d\n", __func__, con, old_state,
+ CON_SOCK_STATE_CONNECTING);
+}
+
+static void con_sock_state_connected(struct ceph_connection *con)
+{
+ int old_state;
+
+ old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CONNECTED);
+ if (WARN_ON(old_state != CON_SOCK_STATE_CONNECTING))
+ printk("%s: unexpected old state %d\n", __func__, old_state);
+ dout("%s con %p sock %d -> %d\n", __func__, con, old_state,
+ CON_SOCK_STATE_CONNECTED);
+}
+
+static void con_sock_state_closing(struct ceph_connection *con)
+{
+ int old_state;
+
+ old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CLOSING);
+ if (WARN_ON(old_state != CON_SOCK_STATE_CONNECTING &&
+ old_state != CON_SOCK_STATE_CONNECTED &&
+ old_state != CON_SOCK_STATE_CLOSING))
+ printk("%s: unexpected old state %d\n", __func__, old_state);
+ dout("%s con %p sock %d -> %d\n", __func__, con, old_state,
+ CON_SOCK_STATE_CLOSING);
+}
+
+static void con_sock_state_closed(struct ceph_connection *con)
+{
+ int old_state;
+
+ old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CLOSED);
+ if (WARN_ON(old_state != CON_SOCK_STATE_CONNECTED &&
+ old_state != CON_SOCK_STATE_CLOSING &&
+ old_state != CON_SOCK_STATE_CONNECTING &&
+ old_state != CON_SOCK_STATE_CLOSED))
+ printk("%s: unexpected old state %d\n", __func__, old_state);
+ dout("%s con %p sock %d -> %d\n", __func__, con, old_state,
+ CON_SOCK_STATE_CLOSED);
+}
/*
* socket callback functions
*/
/* data available on socket, or listen socket received a connect */
-static void ceph_data_ready(struct sock *sk, int count_unused)
+static void ceph_sock_data_ready(struct sock *sk)
{
- struct ceph_connection *con =
- (struct ceph_connection *)sk->sk_user_data;
+ struct ceph_connection *con = sk->sk_user_data;
+ if (atomic_read(&con->msgr->stopping)) {
+ return;
+ }
+
if (sk->sk_state != TCP_CLOSE_WAIT) {
- dout("ceph_data_ready on %p state = %lu, queueing work\n",
+ dout("%s on %p state = %lu, queueing work\n", __func__,
con, con->state);
queue_con(con);
}
}
/* socket has buffer space for writing */
-static void ceph_write_space(struct sock *sk)
+static void ceph_sock_write_space(struct sock *sk)
{
- struct ceph_connection *con =
- (struct ceph_connection *)sk->sk_user_data;
+ struct ceph_connection *con = sk->sk_user_data;
- /* only queue to workqueue if there is data we want to write. */
- if (test_bit(WRITE_PENDING, &con->state)) {
- dout("ceph_write_space %p queueing write work\n", con);
- queue_con(con);
+ /* only queue to workqueue if there is data we want to write,
+ * and there is sufficient space in the socket buffer to accept
+ * more data. clear SOCK_NOSPACE so that ceph_sock_write_space()
+ * doesn't get called again until try_write() fills the socket
+ * buffer. See net/ipv4/tcp_input.c:tcp_check_space()
+ * and net/core/stream.c:sk_stream_write_space().
+ */
+ if (con_flag_test(con, CON_FLAG_WRITE_PENDING)) {
+ if (sk_stream_is_writeable(sk)) {
+ dout("%s %p queueing write work\n", __func__, con);
+ clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
+ queue_con(con);
+ }
} else {
- dout("ceph_write_space %p nothing to write\n", con);
+ dout("%s %p nothing to write\n", __func__, con);
}
-
- /* since we have our own write_space, clear the SOCK_NOSPACE flag */
- clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
}
/* socket's state has changed */
-static void ceph_state_change(struct sock *sk)
+static void ceph_sock_state_change(struct sock *sk)
{
- struct ceph_connection *con =
- (struct ceph_connection *)sk->sk_user_data;
+ struct ceph_connection *con = sk->sk_user_data;
- dout("ceph_state_change %p state = %lu sk_state = %u\n",
+ dout("%s %p state = %lu sk_state = %u\n", __func__,
con, con->state, sk->sk_state);
- if (test_bit(CLOSED, &con->state))
- return;
-
switch (sk->sk_state) {
case TCP_CLOSE:
- dout("ceph_state_change TCP_CLOSE\n");
+ dout("%s TCP_CLOSE\n", __func__);
case TCP_CLOSE_WAIT:
- dout("ceph_state_change TCP_CLOSE_WAIT\n");
- if (test_and_set_bit(SOCK_CLOSED, &con->state) == 0) {
- if (test_bit(CONNECTING, &con->state))
- con->error_msg = "connection failed";
- else
- con->error_msg = "socket closed";
- queue_con(con);
- }
+ dout("%s TCP_CLOSE_WAIT\n", __func__);
+ con_sock_state_closing(con);
+ con_flag_set(con, CON_FLAG_SOCK_CLOSED);
+ queue_con(con);
break;
case TCP_ESTABLISHED:
- dout("ceph_state_change TCP_ESTABLISHED\n");
+ dout("%s TCP_ESTABLISHED\n", __func__);
+ con_sock_state_connected(con);
queue_con(con);
break;
+ default: /* Everything else is uninteresting */
+ break;
}
}
@@ -194,10 +454,10 @@ static void set_sock_callbacks(struct socket *sock,
struct ceph_connection *con)
{
struct sock *sk = sock->sk;
- sk->sk_user_data = (void *)con;
- sk->sk_data_ready = ceph_data_ready;
- sk->sk_write_space = ceph_write_space;
- sk->sk_state_change = ceph_state_change;
+ sk->sk_user_data = con;
+ sk->sk_data_ready = ceph_sock_data_ready;
+ sk->sk_write_space = ceph_sock_write_space;
+ sk->sk_state_change = ceph_sock_state_change;
}
@@ -208,7 +468,7 @@ static void set_sock_callbacks(struct socket *sock,
/*
* initiate connection to a remote socket.
*/
-static struct socket *ceph_tcp_connect(struct ceph_connection *con)
+static int ceph_tcp_connect(struct ceph_connection *con)
{
struct sockaddr_storage *paddr = &con->peer_addr.in_addr;
struct socket *sock;
@@ -218,8 +478,7 @@ static struct socket *ceph_tcp_connect(struct ceph_connection *con)
ret = sock_create_kern(con->peer_addr.in_addr.ss_family, SOCK_STREAM,
IPPROTO_TCP, &sock);
if (ret)
- return ERR_PTR(ret);
- con->sock = sock;
+ return ret;
sock->sk->sk_allocation = GFP_NOFS;
#ifdef CONFIG_LOCKDEP
@@ -230,25 +489,23 @@ static struct socket *ceph_tcp_connect(struct ceph_connection *con)
dout("connect %s\n", ceph_pr_addr(&con->peer_addr.in_addr));
+ con_sock_state_connecting(con);
ret = sock->ops->connect(sock, (struct sockaddr *)paddr, sizeof(*paddr),
O_NONBLOCK);
if (ret == -EINPROGRESS) {
dout("connect %s EINPROGRESS sk_state = %u\n",
ceph_pr_addr(&con->peer_addr.in_addr),
sock->sk->sk_state);
- ret = 0;
- }
- if (ret < 0) {
+ } else if (ret < 0) {
pr_err("connect %s error %d\n",
ceph_pr_addr(&con->peer_addr.in_addr), ret);
sock_release(sock);
- con->sock = NULL;
con->error_msg = "connect error";
- }
- if (ret < 0)
- return ERR_PTR(ret);
- return sock;
+ return ret;
+ }
+ con->sock = sock;
+ return 0;
}
static int ceph_tcp_recvmsg(struct socket *sock, void *buf, size_t len)
@@ -263,6 +520,22 @@ static int ceph_tcp_recvmsg(struct socket *sock, void *buf, size_t len)
return r;
}
+static int ceph_tcp_recvpage(struct socket *sock, struct page *page,
+ int page_offset, size_t length)
+{
+ void *kaddr;
+ int ret;
+
+ BUG_ON(page_offset + length > PAGE_SIZE);
+
+ kaddr = kmap(page);
+ BUG_ON(!kaddr);
+ ret = ceph_tcp_recvmsg(sock, kaddr + page_offset, length);
+ kunmap(page);
+
+ return ret;
+}
+
/*
* write something. @more is true if caller will be sending more data
* shortly.
@@ -284,22 +557,61 @@ static int ceph_tcp_sendmsg(struct socket *sock, struct kvec *iov,
return r;
}
+static int __ceph_tcp_sendpage(struct socket *sock, struct page *page,
+ int offset, size_t size, bool more)
+{
+ int flags = MSG_DONTWAIT | MSG_NOSIGNAL | (more ? MSG_MORE : MSG_EOR);
+ int ret;
+
+ ret = kernel_sendpage(sock, page, offset, size, flags);
+ if (ret == -EAGAIN)
+ ret = 0;
+
+ return ret;
+}
+
+static int ceph_tcp_sendpage(struct socket *sock, struct page *page,
+ int offset, size_t size, bool more)
+{
+ int ret;
+ struct kvec iov;
+
+ /* sendpage cannot properly handle pages with page_count == 0,
+ * we need to fallback to sendmsg if that's the case */
+ if (page_count(page) >= 1)
+ return __ceph_tcp_sendpage(sock, page, offset, size, more);
+
+ iov.iov_base = kmap(page) + offset;
+ iov.iov_len = size;
+ ret = ceph_tcp_sendmsg(sock, &iov, 1, size, more);
+ kunmap(page);
+
+ return ret;
+}
/*
* Shutdown/close the socket for the given connection.
*/
static int con_close_socket(struct ceph_connection *con)
{
- int rc;
+ int rc = 0;
dout("con_close_socket on %p sock %p\n", con, con->sock);
- if (!con->sock)
- return 0;
- set_bit(SOCK_CLOSED, &con->state);
- rc = con->sock->ops->shutdown(con->sock, SHUT_RDWR);
- sock_release(con->sock);
- con->sock = NULL;
- clear_bit(SOCK_CLOSED, &con->state);
+ if (con->sock) {
+ rc = con->sock->ops->shutdown(con->sock, SHUT_RDWR);
+ sock_release(con->sock);
+ con->sock = NULL;
+ }
+
+ /*
+ * Forcibly clear the SOCK_CLOSED flag. It gets set
+ * independent of the connection mutex, and we could have
+ * received a socket close event before we had the chance to
+ * shut the socket down.
+ */
+ con_flag_clear(con, CON_FLAG_SOCK_CLOSED);
+
+ con_sock_state_closed(con);
return rc;
}
@@ -310,6 +622,10 @@ static int con_close_socket(struct ceph_connection *con)
static void ceph_msg_remove(struct ceph_msg *msg)
{
list_del_init(&msg->list_head);
+ BUG_ON(msg->con == NULL);
+ msg->con->ops->put(msg->con);
+ msg->con = NULL;
+
ceph_msg_put(msg);
}
static void ceph_msg_remove_list(struct list_head *head)
@@ -325,12 +641,16 @@ static void reset_connection(struct ceph_connection *con)
{
/* reset connection, out_queue, msg_ and connect_seq */
/* discard existing out_queue and msg_seq */
+ dout("reset_connection %p\n", con);
ceph_msg_remove_list(&con->out_queue);
ceph_msg_remove_list(&con->out_sent);
if (con->in_msg) {
+ BUG_ON(con->in_msg->con != con);
+ con->in_msg->con = NULL;
ceph_msg_put(con->in_msg);
con->in_msg = NULL;
+ con->ops->put(con);
}
con->connect_seq = 0;
@@ -348,32 +668,43 @@ static void reset_connection(struct ceph_connection *con)
*/
void ceph_con_close(struct ceph_connection *con)
{
+ mutex_lock(&con->mutex);
dout("con_close %p peer %s\n", con,
ceph_pr_addr(&con->peer_addr.in_addr));
- set_bit(CLOSED, &con->state); /* in case there's queued work */
- clear_bit(STANDBY, &con->state); /* avoid connect_seq bump */
- clear_bit(LOSSYTX, &con->state); /* so we retry next connect */
- clear_bit(KEEPALIVE_PENDING, &con->state);
- clear_bit(WRITE_PENDING, &con->state);
- mutex_lock(&con->mutex);
+ con->state = CON_STATE_CLOSED;
+
+ con_flag_clear(con, CON_FLAG_LOSSYTX); /* so we retry next connect */
+ con_flag_clear(con, CON_FLAG_KEEPALIVE_PENDING);
+ con_flag_clear(con, CON_FLAG_WRITE_PENDING);
+ con_flag_clear(con, CON_FLAG_BACKOFF);
+
reset_connection(con);
con->peer_global_seq = 0;
cancel_delayed_work(&con->work);
+ con_close_socket(con);
mutex_unlock(&con->mutex);
- queue_con(con);
}
EXPORT_SYMBOL(ceph_con_close);
/*
* Reopen a closed connection, with a new peer address.
*/
-void ceph_con_open(struct ceph_connection *con, struct ceph_entity_addr *addr)
+void ceph_con_open(struct ceph_connection *con,
+ __u8 entity_type, __u64 entity_num,
+ struct ceph_entity_addr *addr)
{
+ mutex_lock(&con->mutex);
dout("con_open %p %s\n", con, ceph_pr_addr(&addr->in_addr));
- set_bit(OPENING, &con->state);
- clear_bit(CLOSED, &con->state);
+
+ WARN_ON(con->state != CON_STATE_CLOSED);
+ con->state = CON_STATE_PREOPEN;
+
+ con->peer_name.type = (__u8) entity_type;
+ con->peer_name.num = cpu_to_le64(entity_num);
+
memcpy(&con->peer_addr, addr, sizeof(*addr));
con->delay = 0; /* reset backoff memory */
+ mutex_unlock(&con->mutex);
queue_con(con);
}
EXPORT_SYMBOL(ceph_con_open);
@@ -387,41 +718,26 @@ bool ceph_con_opened(struct ceph_connection *con)
}
/*
- * generic get/put
- */
-struct ceph_connection *ceph_con_get(struct ceph_connection *con)
-{
- dout("con_get %p nref = %d -> %d\n", con,
- atomic_read(&con->nref), atomic_read(&con->nref) + 1);
- if (atomic_inc_not_zero(&con->nref))
- return con;
- return NULL;
-}
-
-void ceph_con_put(struct ceph_connection *con)
-{
- dout("con_put %p nref = %d -> %d\n", con,
- atomic_read(&con->nref), atomic_read(&con->nref) - 1);
- BUG_ON(atomic_read(&con->nref) == 0);
- if (atomic_dec_and_test(&con->nref)) {
- BUG_ON(con->sock);
- kfree(con);
- }
-}
-
-/*
* initialize a new connection.
*/
-void ceph_con_init(struct ceph_messenger *msgr, struct ceph_connection *con)
+void ceph_con_init(struct ceph_connection *con, void *private,
+ const struct ceph_connection_operations *ops,
+ struct ceph_messenger *msgr)
{
dout("con_init %p\n", con);
memset(con, 0, sizeof(*con));
- atomic_set(&con->nref, 1);
+ con->private = private;
+ con->ops = ops;
con->msgr = msgr;
+
+ con_sock_state_init(con);
+
mutex_init(&con->mutex);
INIT_LIST_HEAD(&con->out_queue);
INIT_LIST_HEAD(&con->out_sent);
INIT_DELAYED_WORK(&con->work, con_work);
+
+ con->state = CON_STATE_CLOSED;
}
EXPORT_SYMBOL(ceph_con_init);
@@ -442,14 +758,432 @@ static u32 get_global_seq(struct ceph_messenger *msgr, u32 gt)
return ret;
}
+static void con_out_kvec_reset(struct ceph_connection *con)
+{
+ con->out_kvec_left = 0;
+ con->out_kvec_bytes = 0;
+ con->out_kvec_cur = &con->out_kvec[0];
+}
+
+static void con_out_kvec_add(struct ceph_connection *con,
+ size_t size, void *data)
+{
+ int index;
+
+ index = con->out_kvec_left;
+ BUG_ON(index >= ARRAY_SIZE(con->out_kvec));
+
+ con->out_kvec[index].iov_len = size;
+ con->out_kvec[index].iov_base = data;
+ con->out_kvec_left++;
+ con->out_kvec_bytes += size;
+}
+
+#ifdef CONFIG_BLOCK
+
+/*
+ * For a bio data item, a piece is whatever remains of the next
+ * entry in the current bio iovec, or the first entry in the next
+ * bio in the list.
+ */
+static void ceph_msg_data_bio_cursor_init(struct ceph_msg_data_cursor *cursor,
+ size_t length)
+{
+ struct ceph_msg_data *data = cursor->data;
+ struct bio *bio;
+
+ BUG_ON(data->type != CEPH_MSG_DATA_BIO);
+
+ bio = data->bio;
+ BUG_ON(!bio);
+
+ cursor->resid = min(length, data->bio_length);
+ cursor->bio = bio;
+ cursor->bvec_iter = bio->bi_iter;
+ cursor->last_piece =
+ cursor->resid <= bio_iter_len(bio, cursor->bvec_iter);
+}
+
+static struct page *ceph_msg_data_bio_next(struct ceph_msg_data_cursor *cursor,
+ size_t *page_offset,
+ size_t *length)
+{
+ struct ceph_msg_data *data = cursor->data;
+ struct bio *bio;
+ struct bio_vec bio_vec;
+
+ BUG_ON(data->type != CEPH_MSG_DATA_BIO);
+
+ bio = cursor->bio;
+ BUG_ON(!bio);
+
+ bio_vec = bio_iter_iovec(bio, cursor->bvec_iter);
+
+ *page_offset = (size_t) bio_vec.bv_offset;
+ BUG_ON(*page_offset >= PAGE_SIZE);
+ if (cursor->last_piece) /* pagelist offset is always 0 */
+ *length = cursor->resid;
+ else
+ *length = (size_t) bio_vec.bv_len;
+ BUG_ON(*length > cursor->resid);
+ BUG_ON(*page_offset + *length > PAGE_SIZE);
+
+ return bio_vec.bv_page;
+}
+
+static bool ceph_msg_data_bio_advance(struct ceph_msg_data_cursor *cursor,
+ size_t bytes)
+{
+ struct bio *bio;
+ struct bio_vec bio_vec;
+
+ BUG_ON(cursor->data->type != CEPH_MSG_DATA_BIO);
+
+ bio = cursor->bio;
+ BUG_ON(!bio);
+
+ bio_vec = bio_iter_iovec(bio, cursor->bvec_iter);
+
+ /* Advance the cursor offset */
+
+ BUG_ON(cursor->resid < bytes);
+ cursor->resid -= bytes;
+
+ bio_advance_iter(bio, &cursor->bvec_iter, bytes);
+
+ if (bytes < bio_vec.bv_len)
+ return false; /* more bytes to process in this segment */
+
+ /* Move on to the next segment, and possibly the next bio */
+
+ if (!cursor->bvec_iter.bi_size) {
+ bio = bio->bi_next;
+ cursor->bio = bio;
+ if (bio)
+ cursor->bvec_iter = bio->bi_iter;
+ else
+ memset(&cursor->bvec_iter, 0,
+ sizeof(cursor->bvec_iter));
+ }
+
+ if (!cursor->last_piece) {
+ BUG_ON(!cursor->resid);
+ BUG_ON(!bio);
+ /* A short read is OK, so use <= rather than == */
+ if (cursor->resid <= bio_iter_len(bio, cursor->bvec_iter))
+ cursor->last_piece = true;
+ }
+
+ return true;
+}
+#endif /* CONFIG_BLOCK */
+
+/*
+ * For a page array, a piece comes from the first page in the array
+ * that has not already been fully consumed.
+ */
+static void ceph_msg_data_pages_cursor_init(struct ceph_msg_data_cursor *cursor,
+ size_t length)
+{
+ struct ceph_msg_data *data = cursor->data;
+ int page_count;
+
+ BUG_ON(data->type != CEPH_MSG_DATA_PAGES);
+
+ BUG_ON(!data->pages);
+ BUG_ON(!data->length);
+
+ cursor->resid = min(length, data->length);
+ page_count = calc_pages_for(data->alignment, (u64)data->length);
+ cursor->page_offset = data->alignment & ~PAGE_MASK;
+ cursor->page_index = 0;
+ BUG_ON(page_count > (int)USHRT_MAX);
+ cursor->page_count = (unsigned short)page_count;
+ BUG_ON(length > SIZE_MAX - cursor->page_offset);
+ cursor->last_piece = (size_t)cursor->page_offset + length <= PAGE_SIZE;
+}
+
+static struct page *
+ceph_msg_data_pages_next(struct ceph_msg_data_cursor *cursor,
+ size_t *page_offset, size_t *length)
+{
+ struct ceph_msg_data *data = cursor->data;
+
+ BUG_ON(data->type != CEPH_MSG_DATA_PAGES);
+
+ BUG_ON(cursor->page_index >= cursor->page_count);
+ BUG_ON(cursor->page_offset >= PAGE_SIZE);
+
+ *page_offset = cursor->page_offset;
+ if (cursor->last_piece)
+ *length = cursor->resid;
+ else
+ *length = PAGE_SIZE - *page_offset;
+
+ return data->pages[cursor->page_index];
+}
+
+static bool ceph_msg_data_pages_advance(struct ceph_msg_data_cursor *cursor,
+ size_t bytes)
+{
+ BUG_ON(cursor->data->type != CEPH_MSG_DATA_PAGES);
+
+ BUG_ON(cursor->page_offset + bytes > PAGE_SIZE);
+
+ /* Advance the cursor page offset */
+
+ cursor->resid -= bytes;
+ cursor->page_offset = (cursor->page_offset + bytes) & ~PAGE_MASK;
+ if (!bytes || cursor->page_offset)
+ return false; /* more bytes to process in the current page */
+
+ if (!cursor->resid)
+ return false; /* no more data */
+
+ /* Move on to the next page; offset is already at 0 */
+
+ BUG_ON(cursor->page_index >= cursor->page_count);
+ cursor->page_index++;
+ cursor->last_piece = cursor->resid <= PAGE_SIZE;
+
+ return true;
+}
+
+/*
+ * For a pagelist, a piece is whatever remains to be consumed in the
+ * first page in the list, or the front of the next page.
+ */
+static void
+ceph_msg_data_pagelist_cursor_init(struct ceph_msg_data_cursor *cursor,
+ size_t length)
+{
+ struct ceph_msg_data *data = cursor->data;
+ struct ceph_pagelist *pagelist;
+ struct page *page;
+
+ BUG_ON(data->type != CEPH_MSG_DATA_PAGELIST);
+
+ pagelist = data->pagelist;
+ BUG_ON(!pagelist);
+
+ if (!length)
+ return; /* pagelist can be assigned but empty */
+
+ BUG_ON(list_empty(&pagelist->head));
+ page = list_first_entry(&pagelist->head, struct page, lru);
+
+ cursor->resid = min(length, pagelist->length);
+ cursor->page = page;
+ cursor->offset = 0;
+ cursor->last_piece = cursor->resid <= PAGE_SIZE;
+}
+
+static struct page *
+ceph_msg_data_pagelist_next(struct ceph_msg_data_cursor *cursor,
+ size_t *page_offset, size_t *length)
+{
+ struct ceph_msg_data *data = cursor->data;
+ struct ceph_pagelist *pagelist;
+
+ BUG_ON(data->type != CEPH_MSG_DATA_PAGELIST);
+
+ pagelist = data->pagelist;
+ BUG_ON(!pagelist);
+
+ BUG_ON(!cursor->page);
+ BUG_ON(cursor->offset + cursor->resid != pagelist->length);
+
+ /* offset of first page in pagelist is always 0 */
+ *page_offset = cursor->offset & ~PAGE_MASK;
+ if (cursor->last_piece)
+ *length = cursor->resid;
+ else
+ *length = PAGE_SIZE - *page_offset;
+
+ return cursor->page;
+}
+
+static bool ceph_msg_data_pagelist_advance(struct ceph_msg_data_cursor *cursor,
+ size_t bytes)
+{
+ struct ceph_msg_data *data = cursor->data;
+ struct ceph_pagelist *pagelist;
+
+ BUG_ON(data->type != CEPH_MSG_DATA_PAGELIST);
+
+ pagelist = data->pagelist;
+ BUG_ON(!pagelist);
+
+ BUG_ON(cursor->offset + cursor->resid != pagelist->length);
+ BUG_ON((cursor->offset & ~PAGE_MASK) + bytes > PAGE_SIZE);
+
+ /* Advance the cursor offset */
+
+ cursor->resid -= bytes;
+ cursor->offset += bytes;
+ /* offset of first page in pagelist is always 0 */
+ if (!bytes || cursor->offset & ~PAGE_MASK)
+ return false; /* more bytes to process in the current page */
+
+ if (!cursor->resid)
+ return false; /* no more data */
+
+ /* Move on to the next page */
+
+ BUG_ON(list_is_last(&cursor->page->lru, &pagelist->head));
+ cursor->page = list_entry_next(cursor->page, lru);
+ cursor->last_piece = cursor->resid <= PAGE_SIZE;
+
+ return true;
+}
+
+/*
+ * Message data is handled (sent or received) in pieces, where each
+ * piece resides on a single page. The network layer might not
+ * consume an entire piece at once. A data item's cursor keeps
+ * track of which piece is next to process and how much remains to
+ * be processed in that piece. It also tracks whether the current
+ * piece is the last one in the data item.
+ */
+static void __ceph_msg_data_cursor_init(struct ceph_msg_data_cursor *cursor)
+{
+ size_t length = cursor->total_resid;
+
+ switch (cursor->data->type) {
+ case CEPH_MSG_DATA_PAGELIST:
+ ceph_msg_data_pagelist_cursor_init(cursor, length);
+ break;
+ case CEPH_MSG_DATA_PAGES:
+ ceph_msg_data_pages_cursor_init(cursor, length);
+ break;
+#ifdef CONFIG_BLOCK
+ case CEPH_MSG_DATA_BIO:
+ ceph_msg_data_bio_cursor_init(cursor, length);
+ break;
+#endif /* CONFIG_BLOCK */
+ case CEPH_MSG_DATA_NONE:
+ default:
+ /* BUG(); */
+ break;
+ }
+ cursor->need_crc = true;
+}
+
+static void ceph_msg_data_cursor_init(struct ceph_msg *msg, size_t length)
+{
+ struct ceph_msg_data_cursor *cursor = &msg->cursor;
+ struct ceph_msg_data *data;
+
+ BUG_ON(!length);
+ BUG_ON(length > msg->data_length);
+ BUG_ON(list_empty(&msg->data));
+
+ cursor->data_head = &msg->data;
+ cursor->total_resid = length;
+ data = list_first_entry(&msg->data, struct ceph_msg_data, links);
+ cursor->data = data;
+
+ __ceph_msg_data_cursor_init(cursor);
+}
+
+/*
+ * Return the page containing the next piece to process for a given
+ * data item, and supply the page offset and length of that piece.
+ * Indicate whether this is the last piece in this data item.
+ */
+static struct page *ceph_msg_data_next(struct ceph_msg_data_cursor *cursor,
+ size_t *page_offset, size_t *length,
+ bool *last_piece)
+{
+ struct page *page;
+
+ switch (cursor->data->type) {
+ case CEPH_MSG_DATA_PAGELIST:
+ page = ceph_msg_data_pagelist_next(cursor, page_offset, length);
+ break;
+ case CEPH_MSG_DATA_PAGES:
+ page = ceph_msg_data_pages_next(cursor, page_offset, length);
+ break;
+#ifdef CONFIG_BLOCK
+ case CEPH_MSG_DATA_BIO:
+ page = ceph_msg_data_bio_next(cursor, page_offset, length);
+ break;
+#endif /* CONFIG_BLOCK */
+ case CEPH_MSG_DATA_NONE:
+ default:
+ page = NULL;
+ break;
+ }
+ BUG_ON(!page);
+ BUG_ON(*page_offset + *length > PAGE_SIZE);
+ BUG_ON(!*length);
+ if (last_piece)
+ *last_piece = cursor->last_piece;
+
+ return page;
+}
+
+/*
+ * Returns true if the result moves the cursor on to the next piece
+ * of the data item.
+ */
+static bool ceph_msg_data_advance(struct ceph_msg_data_cursor *cursor,
+ size_t bytes)
+{
+ bool new_piece;
+
+ BUG_ON(bytes > cursor->resid);
+ switch (cursor->data->type) {
+ case CEPH_MSG_DATA_PAGELIST:
+ new_piece = ceph_msg_data_pagelist_advance(cursor, bytes);
+ break;
+ case CEPH_MSG_DATA_PAGES:
+ new_piece = ceph_msg_data_pages_advance(cursor, bytes);
+ break;
+#ifdef CONFIG_BLOCK
+ case CEPH_MSG_DATA_BIO:
+ new_piece = ceph_msg_data_bio_advance(cursor, bytes);
+ break;
+#endif /* CONFIG_BLOCK */
+ case CEPH_MSG_DATA_NONE:
+ default:
+ BUG();
+ break;
+ }
+ cursor->total_resid -= bytes;
+
+ if (!cursor->resid && cursor->total_resid) {
+ WARN_ON(!cursor->last_piece);
+ BUG_ON(list_is_last(&cursor->data->links, cursor->data_head));
+ cursor->data = list_entry_next(cursor->data, links);
+ __ceph_msg_data_cursor_init(cursor);
+ new_piece = true;
+ }
+ cursor->need_crc = new_piece;
+
+ return new_piece;
+}
+
+static void prepare_message_data(struct ceph_msg *msg, u32 data_len)
+{
+ BUG_ON(!msg);
+ BUG_ON(!data_len);
+
+ /* Initialize data cursor */
+
+ ceph_msg_data_cursor_init(msg, (size_t)data_len);
+}
/*
* Prepare footer for currently outgoing message, and finish things
* off. Assumes out_kvec* are already valid.. we just add on to the end.
*/
-static void prepare_write_message_footer(struct ceph_connection *con, int v)
+static void prepare_write_message_footer(struct ceph_connection *con)
{
struct ceph_msg *m = con->out_msg;
+ int v = con->out_kvec_left;
+
+ m->footer.flags |= CEPH_MSG_FOOTER_COMPLETE;
dout("prepare_write_message_footer %p\n", con);
con->out_kvec_is_msg = true;
@@ -467,9 +1201,9 @@ static void prepare_write_message_footer(struct ceph_connection *con, int v)
static void prepare_write_message(struct ceph_connection *con)
{
struct ceph_msg *m;
- int v = 0;
+ u32 crc;
- con->out_kvec_bytes = 0;
+ con_out_kvec_reset(con);
con->out_kvec_is_msg = true;
con->out_msg_done = false;
@@ -477,17 +1211,16 @@ static void prepare_write_message(struct ceph_connection *con)
* TCP packet that's a good thing. */
if (con->in_seq > con->in_seq_acked) {
con->in_seq_acked = con->in_seq;
- con->out_kvec[v].iov_base = &tag_ack;
- con->out_kvec[v++].iov_len = 1;
+ con_out_kvec_add(con, sizeof (tag_ack), &tag_ack);
con->out_temp_ack = cpu_to_le64(con->in_seq_acked);
- con->out_kvec[v].iov_base = &con->out_temp_ack;
- con->out_kvec[v++].iov_len = sizeof(con->out_temp_ack);
- con->out_kvec_bytes = 1 + sizeof(con->out_temp_ack);
+ con_out_kvec_add(con, sizeof (con->out_temp_ack),
+ &con->out_temp_ack);
}
- m = list_first_entry(&con->out_queue,
- struct ceph_msg, list_head);
+ BUG_ON(list_empty(&con->out_queue));
+ m = list_first_entry(&con->out_queue, struct ceph_msg, list_head);
con->out_msg = m;
+ BUG_ON(m->con != con);
/* put message on sent list */
ceph_msg_get(m);
@@ -501,62 +1234,51 @@ static void prepare_write_message(struct ceph_connection *con)
m->hdr.seq = cpu_to_le64(++con->out_seq);
m->needs_out_seq = false;
}
+ WARN_ON(m->data_length != le32_to_cpu(m->hdr.data_len));
- dout("prepare_write_message %p seq %lld type %d len %d+%d+%d %d pgs\n",
+ dout("prepare_write_message %p seq %lld type %d len %d+%d+%zd\n",
m, con->out_seq, le16_to_cpu(m->hdr.type),
le32_to_cpu(m->hdr.front_len), le32_to_cpu(m->hdr.middle_len),
- le32_to_cpu(m->hdr.data_len),
- m->nr_pages);
+ m->data_length);
BUG_ON(le32_to_cpu(m->hdr.front_len) != m->front.iov_len);
/* tag + hdr + front + middle */
- con->out_kvec[v].iov_base = &tag_msg;
- con->out_kvec[v++].iov_len = 1;
- con->out_kvec[v].iov_base = &m->hdr;
- con->out_kvec[v++].iov_len = sizeof(m->hdr);
- con->out_kvec[v++] = m->front;
+ con_out_kvec_add(con, sizeof (tag_msg), &tag_msg);
+ con_out_kvec_add(con, sizeof (m->hdr), &m->hdr);
+ con_out_kvec_add(con, m->front.iov_len, m->front.iov_base);
+
if (m->middle)
- con->out_kvec[v++] = m->middle->vec;
- con->out_kvec_left = v;
- con->out_kvec_bytes += 1 + sizeof(m->hdr) + m->front.iov_len +
- (m->middle ? m->middle->vec.iov_len : 0);
- con->out_kvec_cur = con->out_kvec;
+ con_out_kvec_add(con, m->middle->vec.iov_len,
+ m->middle->vec.iov_base);
/* fill in crc (except data pages), footer */
- con->out_msg->hdr.crc =
- cpu_to_le32(crc32c(0, (void *)&m->hdr,
- sizeof(m->hdr) - sizeof(m->hdr.crc)));
- con->out_msg->footer.flags = CEPH_MSG_FOOTER_COMPLETE;
- con->out_msg->footer.front_crc =
- cpu_to_le32(crc32c(0, m->front.iov_base, m->front.iov_len));
- if (m->middle)
- con->out_msg->footer.middle_crc =
- cpu_to_le32(crc32c(0, m->middle->vec.iov_base,
- m->middle->vec.iov_len));
- else
+ crc = crc32c(0, &m->hdr, offsetof(struct ceph_msg_header, crc));
+ con->out_msg->hdr.crc = cpu_to_le32(crc);
+ con->out_msg->footer.flags = 0;
+
+ crc = crc32c(0, m->front.iov_base, m->front.iov_len);
+ con->out_msg->footer.front_crc = cpu_to_le32(crc);
+ if (m->middle) {
+ crc = crc32c(0, m->middle->vec.iov_base,
+ m->middle->vec.iov_len);
+ con->out_msg->footer.middle_crc = cpu_to_le32(crc);
+ } else
con->out_msg->footer.middle_crc = 0;
- con->out_msg->footer.data_crc = 0;
- dout("prepare_write_message front_crc %u data_crc %u\n",
+ dout("%s front_crc %u middle_crc %u\n", __func__,
le32_to_cpu(con->out_msg->footer.front_crc),
le32_to_cpu(con->out_msg->footer.middle_crc));
/* is there a data payload? */
- if (le32_to_cpu(m->hdr.data_len) > 0) {
- /* initialize page iterator */
- con->out_msg_pos.page = 0;
- if (m->pages)
- con->out_msg_pos.page_pos = m->page_alignment;
- else
- con->out_msg_pos.page_pos = 0;
- con->out_msg_pos.data_pos = 0;
- con->out_msg_pos.did_page_crc = 0;
+ con->out_msg->footer.data_crc = 0;
+ if (m->data_length) {
+ prepare_message_data(con->out_msg, m->data_length);
con->out_more = 1; /* data + footer will follow */
} else {
/* no, queue up footer too and be done */
- prepare_write_message_footer(con, v);
+ prepare_write_message_footer(con);
}
- set_bit(WRITE_PENDING, &con->state);
+ con_flag_set(con, CON_FLAG_WRITE_PENDING);
}
/*
@@ -568,16 +1290,34 @@ static void prepare_write_ack(struct ceph_connection *con)
con->in_seq_acked, con->in_seq);
con->in_seq_acked = con->in_seq;
- con->out_kvec[0].iov_base = &tag_ack;
- con->out_kvec[0].iov_len = 1;
+ con_out_kvec_reset(con);
+
+ con_out_kvec_add(con, sizeof (tag_ack), &tag_ack);
+
con->out_temp_ack = cpu_to_le64(con->in_seq_acked);
- con->out_kvec[1].iov_base = &con->out_temp_ack;
- con->out_kvec[1].iov_len = sizeof(con->out_temp_ack);
- con->out_kvec_left = 2;
- con->out_kvec_bytes = 1 + sizeof(con->out_temp_ack);
- con->out_kvec_cur = con->out_kvec;
+ con_out_kvec_add(con, sizeof (con->out_temp_ack),
+ &con->out_temp_ack);
+
con->out_more = 1; /* more will follow.. eventually.. */
- set_bit(WRITE_PENDING, &con->state);
+ con_flag_set(con, CON_FLAG_WRITE_PENDING);
+}
+
+/*
+ * Prepare to share the seq during handshake
+ */
+static void prepare_write_seq(struct ceph_connection *con)
+{
+ dout("prepare_write_seq %p %llu -> %llu\n", con,
+ con->in_seq_acked, con->in_seq);
+ con->in_seq_acked = con->in_seq;
+
+ con_out_kvec_reset(con);
+
+ con->out_temp_ack = cpu_to_le64(con->in_seq_acked);
+ con_out_kvec_add(con, sizeof (con->out_temp_ack),
+ &con->out_temp_ack);
+
+ con_flag_set(con, CON_FLAG_WRITE_PENDING);
}
/*
@@ -586,73 +1326,60 @@ static void prepare_write_ack(struct ceph_connection *con)
static void prepare_write_keepalive(struct ceph_connection *con)
{
dout("prepare_write_keepalive %p\n", con);
- con->out_kvec[0].iov_base = &tag_keepalive;
- con->out_kvec[0].iov_len = 1;
- con->out_kvec_left = 1;
- con->out_kvec_bytes = 1;
- con->out_kvec_cur = con->out_kvec;
- set_bit(WRITE_PENDING, &con->state);
+ con_out_kvec_reset(con);
+ con_out_kvec_add(con, sizeof (tag_keepalive), &tag_keepalive);
+ con_flag_set(con, CON_FLAG_WRITE_PENDING);
}
/*
* Connection negotiation.
*/
-static int prepare_connect_authorizer(struct ceph_connection *con)
+static struct ceph_auth_handshake *get_connect_authorizer(struct ceph_connection *con,
+ int *auth_proto)
{
- void *auth_buf;
- int auth_len = 0;
- int auth_protocol = 0;
+ struct ceph_auth_handshake *auth;
+
+ if (!con->ops->get_authorizer) {
+ con->out_connect.authorizer_protocol = CEPH_AUTH_UNKNOWN;
+ con->out_connect.authorizer_len = 0;
+ return NULL;
+ }
+ /* Can't hold the mutex while getting authorizer */
mutex_unlock(&con->mutex);
- if (con->ops->get_authorizer)
- con->ops->get_authorizer(con, &auth_buf, &auth_len,
- &auth_protocol, &con->auth_reply_buf,
- &con->auth_reply_buf_len,
- con->auth_retry);
+ auth = con->ops->get_authorizer(con, auth_proto, con->auth_retry);
mutex_lock(&con->mutex);
- if (test_bit(CLOSED, &con->state) ||
- test_bit(OPENING, &con->state))
- return -EAGAIN;
-
- con->out_connect.authorizer_protocol = cpu_to_le32(auth_protocol);
- con->out_connect.authorizer_len = cpu_to_le32(auth_len);
+ if (IS_ERR(auth))
+ return auth;
+ if (con->state != CON_STATE_NEGOTIATING)
+ return ERR_PTR(-EAGAIN);
- if (auth_len) {
- con->out_kvec[con->out_kvec_left].iov_base = auth_buf;
- con->out_kvec[con->out_kvec_left].iov_len = auth_len;
- con->out_kvec_left++;
- con->out_kvec_bytes += auth_len;
- }
- return 0;
+ con->auth_reply_buf = auth->authorizer_reply_buf;
+ con->auth_reply_buf_len = auth->authorizer_reply_buf_len;
+ return auth;
}
/*
* We connected to a peer and are saying hello.
*/
-static void prepare_write_banner(struct ceph_messenger *msgr,
- struct ceph_connection *con)
-{
- int len = strlen(CEPH_BANNER);
-
- con->out_kvec[0].iov_base = CEPH_BANNER;
- con->out_kvec[0].iov_len = len;
- con->out_kvec[1].iov_base = &msgr->my_enc_addr;
- con->out_kvec[1].iov_len = sizeof(msgr->my_enc_addr);
- con->out_kvec_left = 2;
- con->out_kvec_bytes = len + sizeof(msgr->my_enc_addr);
- con->out_kvec_cur = con->out_kvec;
+static void prepare_write_banner(struct ceph_connection *con)
+{
+ con_out_kvec_add(con, strlen(CEPH_BANNER), CEPH_BANNER);
+ con_out_kvec_add(con, sizeof (con->msgr->my_enc_addr),
+ &con->msgr->my_enc_addr);
+
con->out_more = 0;
- set_bit(WRITE_PENDING, &con->state);
+ con_flag_set(con, CON_FLAG_WRITE_PENDING);
}
-static int prepare_write_connect(struct ceph_messenger *msgr,
- struct ceph_connection *con,
- int after_banner)
+static int prepare_write_connect(struct ceph_connection *con)
{
- unsigned global_seq = get_global_seq(con->msgr, 0);
+ unsigned int global_seq = get_global_seq(con->msgr, 0);
int proto;
+ int auth_proto;
+ struct ceph_auth_handshake *auth;
switch (con->peer_name.type) {
case CEPH_ENTITY_TYPE_MON:
@@ -671,29 +1398,34 @@ static int prepare_write_connect(struct ceph_messenger *msgr,
dout("prepare_write_connect %p cseq=%d gseq=%d proto=%d\n", con,
con->connect_seq, global_seq, proto);
- con->out_connect.features = cpu_to_le64(msgr->supported_features);
+ con->out_connect.features = cpu_to_le64(con->msgr->supported_features);
con->out_connect.host_type = cpu_to_le32(CEPH_ENTITY_TYPE_CLIENT);
con->out_connect.connect_seq = cpu_to_le32(con->connect_seq);
con->out_connect.global_seq = cpu_to_le32(global_seq);
con->out_connect.protocol_version = cpu_to_le32(proto);
con->out_connect.flags = 0;
- if (!after_banner) {
- con->out_kvec_left = 0;
- con->out_kvec_bytes = 0;
- }
- con->out_kvec[con->out_kvec_left].iov_base = &con->out_connect;
- con->out_kvec[con->out_kvec_left].iov_len = sizeof(con->out_connect);
- con->out_kvec_left++;
- con->out_kvec_bytes += sizeof(con->out_connect);
- con->out_kvec_cur = con->out_kvec;
+ auth_proto = CEPH_AUTH_UNKNOWN;
+ auth = get_connect_authorizer(con, &auth_proto);
+ if (IS_ERR(auth))
+ return PTR_ERR(auth);
+
+ con->out_connect.authorizer_protocol = cpu_to_le32(auth_proto);
+ con->out_connect.authorizer_len = auth ?
+ cpu_to_le32(auth->authorizer_buf_len) : 0;
+
+ con_out_kvec_add(con, sizeof (con->out_connect),
+ &con->out_connect);
+ if (auth && auth->authorizer_buf_len)
+ con_out_kvec_add(con, auth->authorizer_buf_len,
+ auth->authorizer_buf);
+
con->out_more = 0;
- set_bit(WRITE_PENDING, &con->state);
+ con_flag_set(con, CON_FLAG_WRITE_PENDING);
- return prepare_connect_authorizer(con);
+ return 0;
}
-
/*
* write as much of pending kvecs to the socket as we can.
* 1 -> done
@@ -714,17 +1446,18 @@ static int write_partial_kvec(struct ceph_connection *con)
con->out_kvec_bytes -= ret;
if (con->out_kvec_bytes == 0)
break; /* done */
- while (ret > 0) {
- if (ret >= con->out_kvec_cur->iov_len) {
- ret -= con->out_kvec_cur->iov_len;
- con->out_kvec_cur++;
- con->out_kvec_left--;
- } else {
- con->out_kvec_cur->iov_len -= ret;
- con->out_kvec_cur->iov_base += ret;
- ret = 0;
- break;
- }
+
+ /* account for full iov entries consumed */
+ while (ret >= con->out_kvec_cur->iov_len) {
+ BUG_ON(!con->out_kvec_left);
+ ret -= con->out_kvec_cur->iov_len;
+ con->out_kvec_cur++;
+ con->out_kvec_left--;
+ }
+ /* and for a partially-consumed entry */
+ if (ret) {
+ con->out_kvec_cur->iov_len -= ret;
+ con->out_kvec_cur->iov_base += ret;
}
}
con->out_kvec_left = 0;
@@ -736,31 +1469,19 @@ out:
return ret; /* done! */
}
-#ifdef CONFIG_BLOCK
-static void init_bio_iter(struct bio *bio, struct bio **iter, int *seg)
+static u32 ceph_crc32c_page(u32 crc, struct page *page,
+ unsigned int page_offset,
+ unsigned int length)
{
- if (!bio) {
- *iter = NULL;
- *seg = 0;
- return;
- }
- *iter = bio;
- *seg = bio->bi_idx;
-}
+ char *kaddr;
-static void iter_bio_next(struct bio **bio_iter, int *seg)
-{
- if (*bio_iter == NULL)
- return;
-
- BUG_ON(*seg >= (*bio_iter)->bi_vcnt);
+ kaddr = kmap(page);
+ BUG_ON(kaddr == NULL);
+ crc = crc32c(crc, kaddr + page_offset, length);
+ kunmap(page);
- (*seg)++;
- if (*seg == (*bio_iter)->bi_vcnt)
- init_bio_iter((*bio_iter)->bi_next, bio_iter, seg);
+ return crc;
}
-#endif
-
/*
* Write as much message data payload as we can. If we finish, queue
* up the footer.
@@ -768,135 +1489,61 @@ static void iter_bio_next(struct bio **bio_iter, int *seg)
* 0 -> socket full, but more to do
* <0 -> error
*/
-static int write_partial_msg_pages(struct ceph_connection *con)
+static int write_partial_message_data(struct ceph_connection *con)
{
struct ceph_msg *msg = con->out_msg;
- unsigned data_len = le32_to_cpu(msg->hdr.data_len);
- size_t len;
- int crc = con->msgr->nocrc;
- int ret;
- int total_max_write;
- int in_trail = 0;
- size_t trail_len = (msg->trail ? msg->trail->length : 0);
-
- dout("write_partial_msg_pages %p msg %p page %d/%d offset %d\n",
- con, con->out_msg, con->out_msg_pos.page, con->out_msg->nr_pages,
- con->out_msg_pos.page_pos);
-
-#ifdef CONFIG_BLOCK
- if (msg->bio && !msg->bio_iter)
- init_bio_iter(msg->bio, &msg->bio_iter, &msg->bio_seg);
-#endif
-
- while (data_len > con->out_msg_pos.data_pos) {
- struct page *page = NULL;
- void *kaddr = NULL;
- int max_write = PAGE_SIZE;
- int page_shift = 0;
-
- total_max_write = data_len - trail_len -
- con->out_msg_pos.data_pos;
+ struct ceph_msg_data_cursor *cursor = &msg->cursor;
+ bool do_datacrc = !con->msgr->nocrc;
+ u32 crc;
- /*
- * if we are calculating the data crc (the default), we need
- * to map the page. if our pages[] has been revoked, use the
- * zero page.
- */
-
- /* have we reached the trail part of the data? */
- if (con->out_msg_pos.data_pos >= data_len - trail_len) {
- in_trail = 1;
-
- total_max_write = data_len - con->out_msg_pos.data_pos;
-
- page = list_first_entry(&msg->trail->head,
- struct page, lru);
- if (crc)
- kaddr = kmap(page);
- max_write = PAGE_SIZE;
- } else if (msg->pages) {
- page = msg->pages[con->out_msg_pos.page];
- if (crc)
- kaddr = kmap(page);
- } else if (msg->pagelist) {
- page = list_first_entry(&msg->pagelist->head,
- struct page, lru);
- if (crc)
- kaddr = kmap(page);
-#ifdef CONFIG_BLOCK
- } else if (msg->bio) {
- struct bio_vec *bv;
-
- bv = bio_iovec_idx(msg->bio_iter, msg->bio_seg);
- page = bv->bv_page;
- page_shift = bv->bv_offset;
- if (crc)
- kaddr = kmap(page) + page_shift;
- max_write = bv->bv_len;
-#endif
- } else {
- page = con->msgr->zero_page;
- if (crc)
- kaddr = page_address(con->msgr->zero_page);
- }
- len = min_t(int, max_write - con->out_msg_pos.page_pos,
- total_max_write);
+ dout("%s %p msg %p\n", __func__, con, msg);
- if (crc && !con->out_msg_pos.did_page_crc) {
- void *base = kaddr + con->out_msg_pos.page_pos;
- u32 tmpcrc = le32_to_cpu(con->out_msg->footer.data_crc);
+ if (list_empty(&msg->data))
+ return -EINVAL;
- BUG_ON(kaddr == NULL);
- con->out_msg->footer.data_crc =
- cpu_to_le32(crc32c(tmpcrc, base, len));
- con->out_msg_pos.did_page_crc = 1;
- }
- ret = kernel_sendpage(con->sock, page,
- con->out_msg_pos.page_pos + page_shift,
- len,
- MSG_DONTWAIT | MSG_NOSIGNAL |
- MSG_MORE);
-
- if (crc &&
- (msg->pages || msg->pagelist || msg->bio || in_trail))
- kunmap(page);
-
- if (ret == -EAGAIN)
- ret = 0;
- if (ret <= 0)
- goto out;
+ /*
+ * Iterate through each page that contains data to be
+ * written, and send as much as possible for each.
+ *
+ * If we are calculating the data crc (the default), we will
+ * need to map the page. If we have no pages, they have
+ * been revoked, so use the zero page.
+ */
+ crc = do_datacrc ? le32_to_cpu(msg->footer.data_crc) : 0;
+ while (cursor->resid) {
+ struct page *page;
+ size_t page_offset;
+ size_t length;
+ bool last_piece;
+ bool need_crc;
+ int ret;
+
+ page = ceph_msg_data_next(&msg->cursor, &page_offset, &length,
+ &last_piece);
+ ret = ceph_tcp_sendpage(con->sock, page, page_offset,
+ length, last_piece);
+ if (ret <= 0) {
+ if (do_datacrc)
+ msg->footer.data_crc = cpu_to_le32(crc);
- con->out_msg_pos.data_pos += ret;
- con->out_msg_pos.page_pos += ret;
- if (ret == len) {
- con->out_msg_pos.page_pos = 0;
- con->out_msg_pos.page++;
- con->out_msg_pos.did_page_crc = 0;
- if (in_trail)
- list_move_tail(&page->lru,
- &msg->trail->head);
- else if (msg->pagelist)
- list_move_tail(&page->lru,
- &msg->pagelist->head);
-#ifdef CONFIG_BLOCK
- else if (msg->bio)
- iter_bio_next(&msg->bio_iter, &msg->bio_seg);
-#endif
+ return ret;
}
+ if (do_datacrc && cursor->need_crc)
+ crc = ceph_crc32c_page(crc, page, page_offset, length);
+ need_crc = ceph_msg_data_advance(&msg->cursor, (size_t)ret);
}
- dout("write_partial_msg_pages %p msg %p done\n", con, msg);
+ dout("%s %p msg %p done\n", __func__, con, msg);
/* prepare and queue up footer, too */
- if (!crc)
- con->out_msg->footer.flags |= CEPH_MSG_FOOTER_NOCRC;
- con->out_kvec_bytes = 0;
- con->out_kvec_left = 0;
- con->out_kvec_cur = con->out_kvec;
- prepare_write_message_footer(con, 0);
- ret = 1;
-out:
- return ret;
+ if (do_datacrc)
+ msg->footer.data_crc = cpu_to_le32(crc);
+ else
+ msg->footer.flags |= CEPH_MSG_FOOTER_NOCRC;
+ con_out_kvec_reset(con);
+ prepare_write_message_footer(con);
+
+ return 1; /* must return > 0 to indicate success */
}
/*
@@ -907,12 +1554,9 @@ static int write_partial_skip(struct ceph_connection *con)
int ret;
while (con->out_skip > 0) {
- struct kvec iov = {
- .iov_base = page_address(con->msgr->zero_page),
- .iov_len = min(con->out_skip, (int)PAGE_CACHE_SIZE)
- };
+ size_t size = min(con->out_skip, (int) PAGE_CACHE_SIZE);
- ret = ceph_tcp_sendmsg(con->sock, &iov, 1, iov.iov_len, 1);
+ ret = ceph_tcp_sendpage(con->sock, zero_page, 0, size, true);
if (ret <= 0)
goto out;
con->out_skip -= ret;
@@ -943,6 +1587,13 @@ static void prepare_read_ack(struct ceph_connection *con)
con->in_base_pos = 0;
}
+static void prepare_read_seq(struct ceph_connection *con)
+{
+ dout("prepare_read_seq %p\n", con);
+ con->in_base_pos = 0;
+ con->in_tag = CEPH_MSGR_TAG_SEQ;
+}
+
static void prepare_read_tag(struct ceph_connection *con)
{
dout("prepare_read_tag %p\n", con);
@@ -964,11 +1615,10 @@ static int prepare_read_message(struct ceph_connection *con)
static int read_partial(struct ceph_connection *con,
- int *to, int size, void *object)
+ int end, int size, void *object)
{
- *to += size;
- while (con->in_base_pos < *to) {
- int left = *to - con->in_base_pos;
+ while (con->in_base_pos < end) {
+ int left = end - con->in_base_pos;
int have = size - left;
int ret = ceph_tcp_recvmsg(con->sock, object + have, left);
if (ret <= 0)
@@ -984,37 +1634,52 @@ static int read_partial(struct ceph_connection *con,
*/
static int read_partial_banner(struct ceph_connection *con)
{
- int ret, to = 0;
+ int size;
+ int end;
+ int ret;
dout("read_partial_banner %p at %d\n", con, con->in_base_pos);
/* peer's banner */
- ret = read_partial(con, &to, strlen(CEPH_BANNER), con->in_banner);
+ size = strlen(CEPH_BANNER);
+ end = size;
+ ret = read_partial(con, end, size, con->in_banner);
if (ret <= 0)
goto out;
- ret = read_partial(con, &to, sizeof(con->actual_peer_addr),
- &con->actual_peer_addr);
+
+ size = sizeof (con->actual_peer_addr);
+ end += size;
+ ret = read_partial(con, end, size, &con->actual_peer_addr);
if (ret <= 0)
goto out;
- ret = read_partial(con, &to, sizeof(con->peer_addr_for_me),
- &con->peer_addr_for_me);
+
+ size = sizeof (con->peer_addr_for_me);
+ end += size;
+ ret = read_partial(con, end, size, &con->peer_addr_for_me);
if (ret <= 0)
goto out;
+
out:
return ret;
}
static int read_partial_connect(struct ceph_connection *con)
{
- int ret, to = 0;
+ int size;
+ int end;
+ int ret;
dout("read_partial_connect %p at %d\n", con, con->in_base_pos);
- ret = read_partial(con, &to, sizeof(con->in_reply), &con->in_reply);
+ size = sizeof (con->in_reply);
+ end = size;
+ ret = read_partial(con, end, size, &con->in_reply);
if (ret <= 0)
goto out;
- ret = read_partial(con, &to, le32_to_cpu(con->in_reply.authorizer_len),
- con->auth_reply_buf);
+
+ size = le32_to_cpu(con->in_reply.authorizer_len);
+ end += size;
+ ret = read_partial(con, end, size, con->auth_reply_buf);
if (ret <= 0)
goto out;
@@ -1085,8 +1750,8 @@ static void addr_set_port(struct sockaddr_storage *ss, int p)
static int ceph_pton(const char *str, size_t len, struct sockaddr_storage *ss,
char delim, const char **ipend)
{
- struct sockaddr_in *in4 = (void *)ss;
- struct sockaddr_in6 *in6 = (void *)ss;
+ struct sockaddr_in *in4 = (struct sockaddr_in *) ss;
+ struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) ss;
memset(ss, 0, sizeof(*ss));
@@ -1220,7 +1885,9 @@ int ceph_parse_ips(const char *c, const char *end,
port = (port * 10) + (*p - '0');
p++;
}
- if (port > 65535 || port == 0)
+ if (port == 0)
+ port = CEPH_MON_PORT;
+ else if (port > 65535)
goto bad;
} else {
port = CEPH_MON_PORT;
@@ -1293,27 +1960,15 @@ static int process_banner(struct ceph_connection *con)
ceph_pr_addr(&con->msgr->inst.addr.in_addr));
}
- set_bit(NEGOTIATING, &con->state);
- prepare_read_connect(con);
return 0;
}
-static void fail_protocol(struct ceph_connection *con)
-{
- reset_connection(con);
- set_bit(CLOSED, &con->state); /* in case there's queued work */
-
- mutex_unlock(&con->mutex);
- if (con->ops->bad_proto)
- con->ops->bad_proto(con);
- mutex_lock(&con->mutex);
-}
-
static int process_connect(struct ceph_connection *con)
{
u64 sup_feat = con->msgr->supported_features;
u64 req_feat = con->msgr->required_features;
- u64 server_feat = le64_to_cpu(con->in_reply.features);
+ u64 server_feat = ceph_sanitize_features(
+ le64_to_cpu(con->in_reply.features));
int ret;
dout("process_connect on %p tag %d\n", con, (int)con->in_tag);
@@ -1326,7 +1981,7 @@ static int process_connect(struct ceph_connection *con)
ceph_pr_addr(&con->peer_addr.in_addr),
sup_feat, server_feat, server_feat & ~sup_feat);
con->error_msg = "missing required protocol features";
- fail_protocol(con);
+ reset_connection(con);
return -1;
case CEPH_MSGR_TAG_BADPROTOVER:
@@ -1337,7 +1992,7 @@ static int process_connect(struct ceph_connection *con)
le32_to_cpu(con->out_connect.protocol_version),
le32_to_cpu(con->in_reply.protocol_version));
con->error_msg = "protocol version mismatch";
- fail_protocol(con);
+ reset_connection(con);
return -1;
case CEPH_MSGR_TAG_BADAUTHORIZER:
@@ -1348,8 +2003,8 @@ static int process_connect(struct ceph_connection *con)
con->error_msg = "connect authorization failure";
return -1;
}
- con->auth_retry = 1;
- ret = prepare_write_connect(con->msgr, con, 0);
+ con_out_kvec_reset(con);
+ ret = prepare_write_connect(con);
if (ret < 0)
return ret;
prepare_read_connect(con);
@@ -1364,12 +2019,15 @@ static int process_connect(struct ceph_connection *con)
* dropped messages.
*/
dout("process_connect got RESET peer seq %u\n",
- le32_to_cpu(con->in_connect.connect_seq));
+ le32_to_cpu(con->in_reply.connect_seq));
pr_err("%s%lld %s connection reset\n",
ENTITY_NAME(con->peer_name),
ceph_pr_addr(&con->peer_addr.in_addr));
reset_connection(con);
- prepare_write_connect(con->msgr, con, 0);
+ con_out_kvec_reset(con);
+ ret = prepare_write_connect(con);
+ if (ret < 0)
+ return ret;
prepare_read_connect(con);
/* Tell ceph about it. */
@@ -1378,8 +2036,7 @@ static int process_connect(struct ceph_connection *con)
if (con->ops->peer_reset)
con->ops->peer_reset(con);
mutex_lock(&con->mutex);
- if (test_bit(CLOSED, &con->state) ||
- test_bit(OPENING, &con->state))
+ if (con->state != CON_STATE_NEGOTIATING)
return -EAGAIN;
break;
@@ -1388,11 +2045,14 @@ static int process_connect(struct ceph_connection *con)
* If we sent a smaller connect_seq than the peer has, try
* again with a larger value.
*/
- dout("process_connect got RETRY my seq = %u, peer_seq = %u\n",
+ dout("process_connect got RETRY_SESSION my seq %u, peer %u\n",
le32_to_cpu(con->out_connect.connect_seq),
- le32_to_cpu(con->in_connect.connect_seq));
- con->connect_seq = le32_to_cpu(con->in_connect.connect_seq);
- prepare_write_connect(con->msgr, con, 0);
+ le32_to_cpu(con->in_reply.connect_seq));
+ con->connect_seq = le32_to_cpu(con->in_reply.connect_seq);
+ con_out_kvec_reset(con);
+ ret = prepare_write_connect(con);
+ if (ret < 0)
+ return ret;
prepare_read_connect(con);
break;
@@ -1403,13 +2063,17 @@ static int process_connect(struct ceph_connection *con)
*/
dout("process_connect got RETRY_GLOBAL my %u peer_gseq %u\n",
con->peer_global_seq,
- le32_to_cpu(con->in_connect.global_seq));
+ le32_to_cpu(con->in_reply.global_seq));
get_global_seq(con->msgr,
- le32_to_cpu(con->in_connect.global_seq));
- prepare_write_connect(con->msgr, con, 0);
+ le32_to_cpu(con->in_reply.global_seq));
+ con_out_kvec_reset(con);
+ ret = prepare_write_connect(con);
+ if (ret < 0)
+ return ret;
prepare_read_connect(con);
break;
+ case CEPH_MSGR_TAG_SEQ:
case CEPH_MSGR_TAG_READY:
if (req_feat & ~server_feat) {
pr_err("%s%lld %s protocol feature mismatch,"
@@ -1418,10 +2082,13 @@ static int process_connect(struct ceph_connection *con)
ceph_pr_addr(&con->peer_addr.in_addr),
req_feat, server_feat, req_feat & ~server_feat);
con->error_msg = "missing required protocol features";
- fail_protocol(con);
+ reset_connection(con);
return -1;
}
- clear_bit(CONNECTING, &con->state);
+
+ WARN_ON(con->state != CON_STATE_NEGOTIATING);
+ con->state = CON_STATE_OPEN;
+ con->auth_retry = 0; /* we authenticated; clear flag */
con->peer_global_seq = le32_to_cpu(con->in_reply.global_seq);
con->connect_seq++;
con->peer_features = server_feat;
@@ -1433,9 +2100,16 @@ static int process_connect(struct ceph_connection *con)
le32_to_cpu(con->in_reply.connect_seq));
if (con->in_reply.flags & CEPH_MSG_CONNECT_LOSSY)
- set_bit(LOSSYTX, &con->state);
+ con_flag_set(con, CON_FLAG_LOSSYTX);
+
+ con->delay = 0; /* reset backoff memory */
- prepare_read_tag(con);
+ if (con->in_reply.tag == CEPH_MSGR_TAG_SEQ) {
+ prepare_write_seq(con);
+ prepare_read_seq(con);
+ } else {
+ prepare_read_tag(con);
+ }
break;
case CEPH_MSGR_TAG_WAIT:
@@ -1463,13 +2137,12 @@ static int process_connect(struct ceph_connection *con)
*/
static int read_partial_ack(struct ceph_connection *con)
{
- int to = 0;
+ int size = sizeof (con->in_temp_ack);
+ int end = size;
- return read_partial(con, &to, sizeof(con->in_temp_ack),
- &con->in_temp_ack);
+ return read_partial(con, end, size, &con->in_temp_ack);
}
-
/*
* We can finally discard anything that's been acked.
*/
@@ -1494,8 +2167,6 @@ static void process_ack(struct ceph_connection *con)
}
-
-
static int read_partial_message_section(struct ceph_connection *con,
struct kvec *section,
unsigned int sec_len, u32 *crc)
@@ -1512,128 +2183,89 @@ static int read_partial_message_section(struct ceph_connection *con,
if (ret <= 0)
return ret;
section->iov_len += ret;
- if (section->iov_len == sec_len)
- *crc = crc32c(0, section->iov_base,
- section->iov_len);
}
+ if (section->iov_len == sec_len)
+ *crc = crc32c(0, section->iov_base, section->iov_len);
return 1;
}
-static struct ceph_msg *ceph_alloc_msg(struct ceph_connection *con,
- struct ceph_msg_header *hdr,
- int *skip);
-
-
-static int read_partial_message_pages(struct ceph_connection *con,
- struct page **pages,
- unsigned data_len, int datacrc)
+static int read_partial_msg_data(struct ceph_connection *con)
{
- void *p;
+ struct ceph_msg *msg = con->in_msg;
+ struct ceph_msg_data_cursor *cursor = &msg->cursor;
+ const bool do_datacrc = !con->msgr->nocrc;
+ struct page *page;
+ size_t page_offset;
+ size_t length;
+ u32 crc = 0;
int ret;
- int left;
-
- left = min((int)(data_len - con->in_msg_pos.data_pos),
- (int)(PAGE_SIZE - con->in_msg_pos.page_pos));
- /* (page) data */
- BUG_ON(pages == NULL);
- p = kmap(pages[con->in_msg_pos.page]);
- ret = ceph_tcp_recvmsg(con->sock, p + con->in_msg_pos.page_pos,
- left);
- if (ret > 0 && datacrc)
- con->in_data_crc =
- crc32c(con->in_data_crc,
- p + con->in_msg_pos.page_pos, ret);
- kunmap(pages[con->in_msg_pos.page]);
- if (ret <= 0)
- return ret;
- con->in_msg_pos.data_pos += ret;
- con->in_msg_pos.page_pos += ret;
- if (con->in_msg_pos.page_pos == PAGE_SIZE) {
- con->in_msg_pos.page_pos = 0;
- con->in_msg_pos.page++;
- }
-
- return ret;
-}
-
-#ifdef CONFIG_BLOCK
-static int read_partial_message_bio(struct ceph_connection *con,
- struct bio **bio_iter, int *bio_seg,
- unsigned data_len, int datacrc)
-{
- struct bio_vec *bv = bio_iovec_idx(*bio_iter, *bio_seg);
- void *p;
- int ret, left;
- if (IS_ERR(bv))
- return PTR_ERR(bv);
+ BUG_ON(!msg);
+ if (list_empty(&msg->data))
+ return -EIO;
- left = min((int)(data_len - con->in_msg_pos.data_pos),
- (int)(bv->bv_len - con->in_msg_pos.page_pos));
+ if (do_datacrc)
+ crc = con->in_data_crc;
+ while (cursor->resid) {
+ page = ceph_msg_data_next(&msg->cursor, &page_offset, &length,
+ NULL);
+ ret = ceph_tcp_recvpage(con->sock, page, page_offset, length);
+ if (ret <= 0) {
+ if (do_datacrc)
+ con->in_data_crc = crc;
- p = kmap(bv->bv_page) + bv->bv_offset;
+ return ret;
+ }
- ret = ceph_tcp_recvmsg(con->sock, p + con->in_msg_pos.page_pos,
- left);
- if (ret > 0 && datacrc)
- con->in_data_crc =
- crc32c(con->in_data_crc,
- p + con->in_msg_pos.page_pos, ret);
- kunmap(bv->bv_page);
- if (ret <= 0)
- return ret;
- con->in_msg_pos.data_pos += ret;
- con->in_msg_pos.page_pos += ret;
- if (con->in_msg_pos.page_pos == bv->bv_len) {
- con->in_msg_pos.page_pos = 0;
- iter_bio_next(bio_iter, bio_seg);
+ if (do_datacrc)
+ crc = ceph_crc32c_page(crc, page, page_offset, ret);
+ (void) ceph_msg_data_advance(&msg->cursor, (size_t)ret);
}
+ if (do_datacrc)
+ con->in_data_crc = crc;
- return ret;
+ return 1; /* must return > 0 to indicate success */
}
-#endif
/*
* read (part of) a message.
*/
+static int ceph_con_in_msg_alloc(struct ceph_connection *con, int *skip);
+
static int read_partial_message(struct ceph_connection *con)
{
struct ceph_msg *m = con->in_msg;
+ int size;
+ int end;
int ret;
- int to, left;
- unsigned front_len, middle_len, data_len;
- int datacrc = con->msgr->nocrc;
- int skip;
+ unsigned int front_len, middle_len, data_len;
+ bool do_datacrc = !con->msgr->nocrc;
u64 seq;
+ u32 crc;
dout("read_partial_message con %p msg %p\n", con, m);
/* header */
- while (con->in_base_pos < sizeof(con->in_hdr)) {
- left = sizeof(con->in_hdr) - con->in_base_pos;
- ret = ceph_tcp_recvmsg(con->sock,
- (char *)&con->in_hdr + con->in_base_pos,
- left);
- if (ret <= 0)
- return ret;
- con->in_base_pos += ret;
- if (con->in_base_pos == sizeof(con->in_hdr)) {
- u32 crc = crc32c(0, (void *)&con->in_hdr,
- sizeof(con->in_hdr) - sizeof(con->in_hdr.crc));
- if (crc != le32_to_cpu(con->in_hdr.crc)) {
- pr_err("read_partial_message bad hdr "
- " crc %u != expected %u\n",
- crc, con->in_hdr.crc);
- return -EBADMSG;
- }
- }
+ size = sizeof (con->in_hdr);
+ end = size;
+ ret = read_partial(con, end, size, &con->in_hdr);
+ if (ret <= 0)
+ return ret;
+
+ crc = crc32c(0, &con->in_hdr, offsetof(struct ceph_msg_header, crc));
+ if (cpu_to_le32(crc) != con->in_hdr.crc) {
+ pr_err("read_partial_message bad hdr "
+ " crc %u != expected %u\n",
+ crc, con->in_hdr.crc);
+ return -EBADMSG;
}
+
front_len = le32_to_cpu(con->in_hdr.front_len);
if (front_len > CEPH_MSG_MAX_FRONT_LEN)
return -EIO;
middle_len = le32_to_cpu(con->in_hdr.middle_len);
- if (middle_len > CEPH_MSG_MAX_DATA_LEN)
+ if (middle_len > CEPH_MSG_MAX_MIDDLE_LEN)
return -EIO;
data_len = le32_to_cpu(con->in_hdr.data_len);
if (data_len > CEPH_MSG_MAX_DATA_LEN)
@@ -1659,36 +2291,43 @@ static int read_partial_message(struct ceph_connection *con)
/* allocate message? */
if (!con->in_msg) {
+ int skip = 0;
+
dout("got hdr type %d front %d data %d\n", con->in_hdr.type,
- con->in_hdr.front_len, con->in_hdr.data_len);
- skip = 0;
- con->in_msg = ceph_alloc_msg(con, &con->in_hdr, &skip);
+ front_len, data_len);
+ ret = ceph_con_in_msg_alloc(con, &skip);
+ if (ret < 0)
+ return ret;
+
+ BUG_ON(!con->in_msg ^ skip);
+ if (con->in_msg && data_len > con->in_msg->data_length) {
+ pr_warning("%s skipping long message (%u > %zd)\n",
+ __func__, data_len, con->in_msg->data_length);
+ ceph_msg_put(con->in_msg);
+ con->in_msg = NULL;
+ skip = 1;
+ }
if (skip) {
/* skip this message */
dout("alloc_msg said skip message\n");
- BUG_ON(con->in_msg);
con->in_base_pos = -front_len - middle_len - data_len -
sizeof(m->footer);
con->in_tag = CEPH_MSGR_TAG_READY;
con->in_seq++;
return 0;
}
- if (!con->in_msg) {
- con->error_msg =
- "error allocating memory for incoming message";
- return -ENOMEM;
- }
+
+ BUG_ON(!con->in_msg);
+ BUG_ON(con->in_msg->con != con);
m = con->in_msg;
m->front.iov_len = 0; /* haven't read it yet */
if (m->middle)
m->middle->vec.iov_len = 0;
- con->in_msg_pos.page = 0;
- if (m->pages)
- con->in_msg_pos.page_pos = m->page_alignment;
- else
- con->in_msg_pos.page_pos = 0;
- con->in_msg_pos.data_pos = 0;
+ /* prepare for data payload, if any */
+
+ if (data_len)
+ prepare_message_data(con->in_msg, data_len);
}
/* front */
@@ -1705,43 +2344,21 @@ static int read_partial_message(struct ceph_connection *con)
if (ret <= 0)
return ret;
}
-#ifdef CONFIG_BLOCK
- if (m->bio && !m->bio_iter)
- init_bio_iter(m->bio, &m->bio_iter, &m->bio_seg);
-#endif
/* (page) data */
- while (con->in_msg_pos.data_pos < data_len) {
- if (m->pages) {
- ret = read_partial_message_pages(con, m->pages,
- data_len, datacrc);
- if (ret <= 0)
- return ret;
-#ifdef CONFIG_BLOCK
- } else if (m->bio) {
-
- ret = read_partial_message_bio(con,
- &m->bio_iter, &m->bio_seg,
- data_len, datacrc);
- if (ret <= 0)
- return ret;
-#endif
- } else {
- BUG_ON(1);
- }
- }
-
- /* footer */
- to = sizeof(m->hdr) + sizeof(m->footer);
- while (con->in_base_pos < to) {
- left = to - con->in_base_pos;
- ret = ceph_tcp_recvmsg(con->sock, (char *)&m->footer +
- (con->in_base_pos - sizeof(m->hdr)),
- left);
+ if (data_len) {
+ ret = read_partial_msg_data(con);
if (ret <= 0)
return ret;
- con->in_base_pos += ret;
}
+
+ /* footer */
+ size = sizeof (m->footer);
+ end += size;
+ ret = read_partial(con, end, size, &m->footer);
+ if (ret <= 0)
+ return ret;
+
dout("read_partial_message got msg %p %d (%u) + %d (%u) + %d (%u)\n",
m, front_len, m->footer.front_crc, middle_len,
m->footer.middle_crc, data_len, m->footer.data_crc);
@@ -1757,7 +2374,7 @@ static int read_partial_message(struct ceph_connection *con)
m, con->in_middle_crc, m->footer.middle_crc);
return -EBADMSG;
}
- if (datacrc &&
+ if (do_datacrc &&
(m->footer.flags & CEPH_MSG_FOOTER_NOCRC) == 0 &&
con->in_data_crc != le32_to_cpu(m->footer.data_crc)) {
pr_err("read_partial_message %p data crc %u != exp. %u\n", m,
@@ -1777,8 +2394,11 @@ static void process_message(struct ceph_connection *con)
{
struct ceph_msg *msg;
+ BUG_ON(con->in_msg->con != con);
+ con->in_msg->con = NULL;
msg = con->in_msg;
con->in_msg = NULL;
+ con->ops->put(con);
/* if first message, set peer_name */
if (con->peer_name.type == 0)
@@ -1798,7 +2418,6 @@ static void process_message(struct ceph_connection *con)
con->ops->dispatch(con, msg);
mutex_lock(&con->mutex);
- prepare_read_tag(con);
}
@@ -1808,32 +2427,29 @@ static void process_message(struct ceph_connection *con)
*/
static int try_write(struct ceph_connection *con)
{
- struct ceph_messenger *msgr = con->msgr;
int ret = 1;
- dout("try_write start %p state %lu nref %d\n", con, con->state,
- atomic_read(&con->nref));
+ dout("try_write start %p state %lu\n", con, con->state);
more:
dout("try_write out_kvec_bytes %d\n", con->out_kvec_bytes);
/* open the socket first? */
- if (con->sock == NULL) {
- prepare_write_banner(msgr, con);
- prepare_write_connect(msgr, con, 1);
+ if (con->state == CON_STATE_PREOPEN) {
+ BUG_ON(con->sock);
+ con->state = CON_STATE_CONNECTING;
+
+ con_out_kvec_reset(con);
+ prepare_write_banner(con);
prepare_read_banner(con);
- set_bit(CONNECTING, &con->state);
- clear_bit(NEGOTIATING, &con->state);
BUG_ON(con->in_msg);
con->in_tag = CEPH_MSGR_TAG_READY;
dout("try_write initiating connect on %p new state %lu\n",
con, con->state);
- con->sock = ceph_tcp_connect(con);
- if (IS_ERR(con->sock)) {
- con->sock = NULL;
+ ret = ceph_tcp_connect(con);
+ if (ret < 0) {
con->error_msg = "connect error";
- ret = -1;
goto out;
}
}
@@ -1859,20 +2475,20 @@ more_kvec:
goto do_next;
}
- ret = write_partial_msg_pages(con);
+ ret = write_partial_message_data(con);
if (ret == 1)
goto more_kvec; /* we need to send the footer, too! */
if (ret == 0)
goto out;
if (ret < 0) {
- dout("try_write write_partial_msg_pages err %d\n",
+ dout("try_write write_partial_message_data err %d\n",
ret);
goto out;
}
}
do_next:
- if (!test_bit(CONNECTING, &con->state)) {
+ if (con->state == CON_STATE_OPEN) {
/* is anything else pending? */
if (!list_empty(&con->out_queue)) {
prepare_write_message(con);
@@ -1882,14 +2498,14 @@ do_next:
prepare_write_ack(con);
goto more;
}
- if (test_and_clear_bit(KEEPALIVE_PENDING, &con->state)) {
+ if (con_flag_test_and_clear(con, CON_FLAG_KEEPALIVE_PENDING)) {
prepare_write_keepalive(con);
goto more;
}
}
/* Nothing to do! */
- clear_bit(WRITE_PENDING, &con->state);
+ con_flag_clear(con, CON_FLAG_WRITE_PENDING);
dout("try_write nothing else to write.\n");
ret = 0;
out:
@@ -1906,38 +2522,45 @@ static int try_read(struct ceph_connection *con)
{
int ret = -1;
- if (!con->sock)
- return 0;
-
- if (test_bit(STANDBY, &con->state))
+more:
+ dout("try_read start on %p state %lu\n", con, con->state);
+ if (con->state != CON_STATE_CONNECTING &&
+ con->state != CON_STATE_NEGOTIATING &&
+ con->state != CON_STATE_OPEN)
return 0;
- dout("try_read start on %p\n", con);
+ BUG_ON(!con->sock);
-more:
dout("try_read tag %d in_base_pos %d\n", (int)con->in_tag,
con->in_base_pos);
- /*
- * process_connect and process_message drop and re-take
- * con->mutex. make sure we handle a racing close or reopen.
- */
- if (test_bit(CLOSED, &con->state) ||
- test_bit(OPENING, &con->state)) {
- ret = -EAGAIN;
+ if (con->state == CON_STATE_CONNECTING) {
+ dout("try_read connecting\n");
+ ret = read_partial_banner(con);
+ if (ret <= 0)
+ goto out;
+ ret = process_banner(con);
+ if (ret < 0)
+ goto out;
+
+ con->state = CON_STATE_NEGOTIATING;
+
+ /*
+ * Received banner is good, exchange connection info.
+ * Do not reset out_kvec, as sending our banner raced
+ * with receiving peer banner after connect completed.
+ */
+ ret = prepare_write_connect(con);
+ if (ret < 0)
+ goto out;
+ prepare_read_connect(con);
+
+ /* Send connection info before awaiting response */
goto out;
}
- if (test_bit(CONNECTING, &con->state)) {
- if (!test_bit(NEGOTIATING, &con->state)) {
- dout("try_read connecting\n");
- ret = read_partial_banner(con);
- if (ret <= 0)
- goto out;
- ret = process_banner(con);
- if (ret < 0)
- goto out;
- }
+ if (con->state == CON_STATE_NEGOTIATING) {
+ dout("try_read negotiating\n");
ret = read_partial_connect(con);
if (ret <= 0)
goto out;
@@ -1947,14 +2570,17 @@ more:
goto more;
}
+ WARN_ON(con->state != CON_STATE_OPEN);
+
if (con->in_base_pos < 0) {
/*
* skipping + discarding content.
*
* FIXME: there must be a better way to do this!
*/
- static char buf[1024];
- int skip = min(1024, -con->in_base_pos);
+ static char buf[SKIP_BUF_SIZE];
+ int skip = min((int) sizeof (buf), -con->in_base_pos);
+
dout("skipping %d / %d bytes\n", skip, -con->in_base_pos);
ret = ceph_tcp_recvmsg(con->sock, buf, skip);
if (ret <= 0)
@@ -1979,7 +2605,8 @@ more:
prepare_read_ack(con);
break;
case CEPH_MSGR_TAG_CLOSE:
- set_bit(CLOSED, &con->state); /* fixme */
+ con_close_socket(con);
+ con->state = CON_STATE_CLOSED;
goto out;
default:
goto bad_tag;
@@ -2002,9 +2629,16 @@ more:
if (con->in_tag == CEPH_MSGR_TAG_READY)
goto more;
process_message(con);
+ if (con->state == CON_STATE_OPEN)
+ prepare_read_tag(con);
goto more;
}
- if (con->in_tag == CEPH_MSGR_TAG_ACK) {
+ if (con->in_tag == CEPH_MSGR_TAG_ACK ||
+ con->in_tag == CEPH_MSGR_TAG_SEQ) {
+ /*
+ * the final handshake seq exchange is semantically
+ * equivalent to an ACK
+ */
ret = read_partial_ack(con);
if (ret <= 0)
goto out;
@@ -2025,28 +2659,97 @@ bad_tag:
/*
- * Atomically queue work on a connection. Bump @con reference to
- * avoid races with connection teardown.
+ * Atomically queue work on a connection after the specified delay.
+ * Bump @con reference to avoid races with connection teardown.
+ * Returns 0 if work was queued, or an error code otherwise.
*/
+static int queue_con_delay(struct ceph_connection *con, unsigned long delay)
+{
+ if (!con->ops->get(con)) {
+ dout("%s %p ref count 0\n", __func__, con);
+
+ return -ENOENT;
+ }
+
+ if (!queue_delayed_work(ceph_msgr_wq, &con->work, delay)) {
+ dout("%s %p - already queued\n", __func__, con);
+ con->ops->put(con);
+
+ return -EBUSY;
+ }
+
+ dout("%s %p %lu\n", __func__, con, delay);
+
+ return 0;
+}
+
static void queue_con(struct ceph_connection *con)
{
- if (test_bit(DEAD, &con->state)) {
- dout("queue_con %p ignoring: DEAD\n",
- con);
- return;
+ (void) queue_con_delay(con, 0);
+}
+
+static bool con_sock_closed(struct ceph_connection *con)
+{
+ if (!con_flag_test_and_clear(con, CON_FLAG_SOCK_CLOSED))
+ return false;
+
+#define CASE(x) \
+ case CON_STATE_ ## x: \
+ con->error_msg = "socket closed (con state " #x ")"; \
+ break;
+
+ switch (con->state) {
+ CASE(CLOSED);
+ CASE(PREOPEN);
+ CASE(CONNECTING);
+ CASE(NEGOTIATING);
+ CASE(OPEN);
+ CASE(STANDBY);
+ default:
+ pr_warning("%s con %p unrecognized state %lu\n",
+ __func__, con, con->state);
+ con->error_msg = "unrecognized con state";
+ BUG();
+ break;
}
+#undef CASE
- if (!con->ops->get(con)) {
- dout("queue_con %p ref count 0\n", con);
- return;
+ return true;
+}
+
+static bool con_backoff(struct ceph_connection *con)
+{
+ int ret;
+
+ if (!con_flag_test_and_clear(con, CON_FLAG_BACKOFF))
+ return false;
+
+ ret = queue_con_delay(con, round_jiffies_relative(con->delay));
+ if (ret) {
+ dout("%s: con %p FAILED to back off %lu\n", __func__,
+ con, con->delay);
+ BUG_ON(ret == -ENOENT);
+ con_flag_set(con, CON_FLAG_BACKOFF);
}
- if (!queue_delayed_work(ceph_msgr_wq, &con->work, 0)) {
- dout("queue_con %p - already queued\n", con);
- con->ops->put(con);
- } else {
- dout("queue_con %p\n", con);
+ return true;
+}
+
+/* Finish fault handling; con->mutex must *not* be held here */
+
+static void con_fault_finish(struct ceph_connection *con)
+{
+ /*
+ * in case we faulted due to authentication, invalidate our
+ * current tickets so that we can get new ones.
+ */
+ if (con->auth_retry && con->ops->invalidate_authorizer) {
+ dout("calling invalidate_authorizer()\n");
+ con->ops->invalidate_authorizer(con);
}
+
+ if (con->ops->fault)
+ con->ops->fault(con);
}
/*
@@ -2056,92 +2759,92 @@ static void con_work(struct work_struct *work)
{
struct ceph_connection *con = container_of(work, struct ceph_connection,
work.work);
- int ret;
+ bool fault;
mutex_lock(&con->mutex);
-restart:
- if (test_and_clear_bit(BACKOFF, &con->state)) {
- dout("con_work %p backing off\n", con);
- if (queue_delayed_work(ceph_msgr_wq, &con->work,
- round_jiffies_relative(con->delay))) {
- dout("con_work %p backoff %lu\n", con, con->delay);
- mutex_unlock(&con->mutex);
- return;
- } else {
- con->ops->put(con);
- dout("con_work %p FAILED to back off %lu\n", con,
- con->delay);
+ while (true) {
+ int ret;
+
+ if ((fault = con_sock_closed(con))) {
+ dout("%s: con %p SOCK_CLOSED\n", __func__, con);
+ break;
+ }
+ if (con_backoff(con)) {
+ dout("%s: con %p BACKOFF\n", __func__, con);
+ break;
+ }
+ if (con->state == CON_STATE_STANDBY) {
+ dout("%s: con %p STANDBY\n", __func__, con);
+ break;
+ }
+ if (con->state == CON_STATE_CLOSED) {
+ dout("%s: con %p CLOSED\n", __func__, con);
+ BUG_ON(con->sock);
+ break;
+ }
+ if (con->state == CON_STATE_PREOPEN) {
+ dout("%s: con %p PREOPEN\n", __func__, con);
+ BUG_ON(con->sock);
}
- }
- if (test_bit(STANDBY, &con->state)) {
- dout("con_work %p STANDBY\n", con);
- goto done;
- }
- if (test_bit(CLOSED, &con->state)) { /* e.g. if we are replaced */
- dout("con_work CLOSED\n");
- con_close_socket(con);
- goto done;
- }
- if (test_and_clear_bit(OPENING, &con->state)) {
- /* reopen w/ new peer */
- dout("con_work OPENING\n");
- con_close_socket(con);
- }
+ ret = try_read(con);
+ if (ret < 0) {
+ if (ret == -EAGAIN)
+ continue;
+ con->error_msg = "socket error on read";
+ fault = true;
+ break;
+ }
- if (test_and_clear_bit(SOCK_CLOSED, &con->state))
- goto fault;
+ ret = try_write(con);
+ if (ret < 0) {
+ if (ret == -EAGAIN)
+ continue;
+ con->error_msg = "socket error on write";
+ fault = true;
+ }
- ret = try_read(con);
- if (ret == -EAGAIN)
- goto restart;
- if (ret < 0)
- goto fault;
+ break; /* If we make it to here, we're done */
+ }
+ if (fault)
+ con_fault(con);
+ mutex_unlock(&con->mutex);
- ret = try_write(con);
- if (ret == -EAGAIN)
- goto restart;
- if (ret < 0)
- goto fault;
+ if (fault)
+ con_fault_finish(con);
-done:
- mutex_unlock(&con->mutex);
-done_unlocked:
con->ops->put(con);
- return;
-
-fault:
- mutex_unlock(&con->mutex);
- ceph_fault(con); /* error/fault path */
- goto done_unlocked;
}
-
/*
* Generic error/fault handler. A retry mechanism is used with
* exponential backoff
*/
-static void ceph_fault(struct ceph_connection *con)
+static void con_fault(struct ceph_connection *con)
{
- pr_err("%s%lld %s %s\n", ENTITY_NAME(con->peer_name),
+ pr_warning("%s%lld %s %s\n", ENTITY_NAME(con->peer_name),
ceph_pr_addr(&con->peer_addr.in_addr), con->error_msg);
dout("fault %p state %lu to peer %s\n",
con, con->state, ceph_pr_addr(&con->peer_addr.in_addr));
- if (test_bit(LOSSYTX, &con->state)) {
- dout("fault on LOSSYTX channel\n");
- goto out;
- }
-
- mutex_lock(&con->mutex);
- if (test_bit(CLOSED, &con->state))
- goto out_unlock;
+ WARN_ON(con->state != CON_STATE_CONNECTING &&
+ con->state != CON_STATE_NEGOTIATING &&
+ con->state != CON_STATE_OPEN);
con_close_socket(con);
+ if (con_flag_test(con, CON_FLAG_LOSSYTX)) {
+ dout("fault on LOSSYTX channel, marking CLOSED\n");
+ con->state = CON_STATE_CLOSED;
+ return;
+ }
+
if (con->in_msg) {
+ BUG_ON(con->in_msg->con != con);
+ con->in_msg->con = NULL;
ceph_msg_put(con->in_msg);
con->in_msg = NULL;
+ con->ops->put(con);
}
/* Requeue anything that hasn't been acked */
@@ -2150,81 +2853,38 @@ static void ceph_fault(struct ceph_connection *con)
/* If there are no messages queued or keepalive pending, place
* the connection in a STANDBY state */
if (list_empty(&con->out_queue) &&
- !test_bit(KEEPALIVE_PENDING, &con->state)) {
+ !con_flag_test(con, CON_FLAG_KEEPALIVE_PENDING)) {
dout("fault %p setting STANDBY clearing WRITE_PENDING\n", con);
- clear_bit(WRITE_PENDING, &con->state);
- set_bit(STANDBY, &con->state);
+ con_flag_clear(con, CON_FLAG_WRITE_PENDING);
+ con->state = CON_STATE_STANDBY;
} else {
/* retry after a delay. */
+ con->state = CON_STATE_PREOPEN;
if (con->delay == 0)
con->delay = BASE_DELAY_INTERVAL;
else if (con->delay < MAX_DELAY_INTERVAL)
con->delay *= 2;
- con->ops->get(con);
- if (queue_delayed_work(ceph_msgr_wq, &con->work,
- round_jiffies_relative(con->delay))) {
- dout("fault queued %p delay %lu\n", con, con->delay);
- } else {
- con->ops->put(con);
- dout("fault failed to queue %p delay %lu, backoff\n",
- con, con->delay);
- /*
- * In many cases we see a socket state change
- * while con_work is running and end up
- * queuing (non-delayed) work, such that we
- * can't backoff with a delay. Set a flag so
- * that when con_work restarts we schedule the
- * delay then.
- */
- set_bit(BACKOFF, &con->state);
- }
- }
-
-out_unlock:
- mutex_unlock(&con->mutex);
-out:
- /*
- * in case we faulted due to authentication, invalidate our
- * current tickets so that we can get new ones.
- */
- if (con->auth_retry && con->ops->invalidate_authorizer) {
- dout("calling invalidate_authorizer()\n");
- con->ops->invalidate_authorizer(con);
+ con_flag_set(con, CON_FLAG_BACKOFF);
+ queue_con(con);
}
-
- if (con->ops->fault)
- con->ops->fault(con);
}
/*
- * create a new messenger instance
+ * initialize a new messenger instance
*/
-struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr,
- u32 supported_features,
- u32 required_features)
+void ceph_messenger_init(struct ceph_messenger *msgr,
+ struct ceph_entity_addr *myaddr,
+ u64 supported_features,
+ u64 required_features,
+ bool nocrc)
{
- struct ceph_messenger *msgr;
-
- msgr = kzalloc(sizeof(*msgr), GFP_KERNEL);
- if (msgr == NULL)
- return ERR_PTR(-ENOMEM);
-
msgr->supported_features = supported_features;
msgr->required_features = required_features;
spin_lock_init(&msgr->global_seq_lock);
- /* the zero page is needed if a request is "canceled" while the message
- * is being written over the socket */
- msgr->zero_page = __page_cache_alloc(GFP_KERNEL | __GFP_ZERO);
- if (!msgr->zero_page) {
- kfree(msgr);
- return ERR_PTR(-ENOMEM);
- }
- kmap(msgr->zero_page);
-
if (myaddr)
msgr->inst.addr = *myaddr;
@@ -2232,32 +2892,23 @@ struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr,
msgr->inst.addr.type = 0;
get_random_bytes(&msgr->inst.addr.nonce, sizeof(msgr->inst.addr.nonce));
encode_my_addr(msgr);
+ msgr->nocrc = nocrc;
- dout("messenger_create %p\n", msgr);
- return msgr;
-}
-EXPORT_SYMBOL(ceph_messenger_create);
+ atomic_set(&msgr->stopping, 0);
-void ceph_messenger_destroy(struct ceph_messenger *msgr)
-{
- dout("destroy %p\n", msgr);
- kunmap(msgr->zero_page);
- __free_page(msgr->zero_page);
- kfree(msgr);
- dout("destroyed messenger %p\n", msgr);
+ dout("%s %p\n", __func__, msgr);
}
-EXPORT_SYMBOL(ceph_messenger_destroy);
+EXPORT_SYMBOL(ceph_messenger_init);
static void clear_standby(struct ceph_connection *con)
{
/* come back from STANDBY? */
- if (test_and_clear_bit(STANDBY, &con->state)) {
- mutex_lock(&con->mutex);
+ if (con->state == CON_STATE_STANDBY) {
dout("clear_standby %p and ++connect_seq\n", con);
+ con->state = CON_STATE_PREOPEN;
con->connect_seq++;
- WARN_ON(test_bit(WRITE_PENDING, &con->state));
- WARN_ON(test_bit(KEEPALIVE_PENDING, &con->state));
- mutex_unlock(&con->mutex);
+ WARN_ON(con_flag_test(con, CON_FLAG_WRITE_PENDING));
+ WARN_ON(con_flag_test(con, CON_FLAG_KEEPALIVE_PENDING));
}
}
@@ -2266,21 +2917,24 @@ static void clear_standby(struct ceph_connection *con)
*/
void ceph_con_send(struct ceph_connection *con, struct ceph_msg *msg)
{
- if (test_bit(CLOSED, &con->state)) {
- dout("con_send %p closed, dropping %p\n", con, msg);
- ceph_msg_put(msg);
- return;
- }
-
/* set src+dst */
msg->hdr.src = con->msgr->inst.name;
-
BUG_ON(msg->front.iov_len != le32_to_cpu(msg->hdr.front_len));
-
msg->needs_out_seq = true;
- /* queue */
mutex_lock(&con->mutex);
+
+ if (con->state == CON_STATE_CLOSED) {
+ dout("con_send %p closed, dropping %p\n", con, msg);
+ ceph_msg_put(msg);
+ mutex_unlock(&con->mutex);
+ return;
+ }
+
+ BUG_ON(msg->con != NULL);
+ msg->con = con->ops->get(con);
+ BUG_ON(msg->con == NULL);
+
BUG_ON(!list_empty(&msg->list_head));
list_add_tail(&msg->list_head, &con->out_queue);
dout("----- %p to %s%lld %d=%s len %d+%d+%d -----\n", msg,
@@ -2289,12 +2943,13 @@ void ceph_con_send(struct ceph_connection *con, struct ceph_msg *msg)
le32_to_cpu(msg->hdr.front_len),
le32_to_cpu(msg->hdr.middle_len),
le32_to_cpu(msg->hdr.data_len));
+
+ clear_standby(con);
mutex_unlock(&con->mutex);
/* if there wasn't anything waiting to send before, queue
* new work */
- clear_standby(con);
- if (test_and_set_bit(WRITE_PENDING, &con->state) == 0)
+ if (con_flag_test_and_set(con, CON_FLAG_WRITE_PENDING) == 0)
queue_con(con);
}
EXPORT_SYMBOL(ceph_con_send);
@@ -2302,24 +2957,34 @@ EXPORT_SYMBOL(ceph_con_send);
/*
* Revoke a message that was previously queued for send
*/
-void ceph_con_revoke(struct ceph_connection *con, struct ceph_msg *msg)
+void ceph_msg_revoke(struct ceph_msg *msg)
{
+ struct ceph_connection *con = msg->con;
+
+ if (!con)
+ return; /* Message not in our possession */
+
mutex_lock(&con->mutex);
if (!list_empty(&msg->list_head)) {
- dout("con_revoke %p msg %p - was on queue\n", con, msg);
+ dout("%s %p msg %p - was on queue\n", __func__, con, msg);
list_del_init(&msg->list_head);
- ceph_msg_put(msg);
+ BUG_ON(msg->con == NULL);
+ msg->con->ops->put(msg->con);
+ msg->con = NULL;
msg->hdr.seq = 0;
+
+ ceph_msg_put(msg);
}
if (con->out_msg == msg) {
- dout("con_revoke %p msg %p - was sending\n", con, msg);
+ dout("%s %p msg %p - was sending\n", __func__, con, msg);
con->out_msg = NULL;
if (con->out_kvec_is_msg) {
con->out_skip = con->out_kvec_bytes;
con->out_kvec_is_msg = false;
}
- ceph_msg_put(msg);
msg->hdr.seq = 0;
+
+ ceph_msg_put(msg);
}
mutex_unlock(&con->mutex);
}
@@ -2327,17 +2992,27 @@ void ceph_con_revoke(struct ceph_connection *con, struct ceph_msg *msg)
/*
* Revoke a message that we may be reading data into
*/
-void ceph_con_revoke_message(struct ceph_connection *con, struct ceph_msg *msg)
+void ceph_msg_revoke_incoming(struct ceph_msg *msg)
{
+ struct ceph_connection *con;
+
+ BUG_ON(msg == NULL);
+ if (!msg->con) {
+ dout("%s msg %p null con\n", __func__, msg);
+
+ return; /* Message not in our possession */
+ }
+
+ con = msg->con;
mutex_lock(&con->mutex);
- if (con->in_msg && con->in_msg == msg) {
- unsigned front_len = le32_to_cpu(con->in_hdr.front_len);
- unsigned middle_len = le32_to_cpu(con->in_hdr.middle_len);
- unsigned data_len = le32_to_cpu(con->in_hdr.data_len);
+ if (con->in_msg == msg) {
+ unsigned int front_len = le32_to_cpu(con->in_hdr.front_len);
+ unsigned int middle_len = le32_to_cpu(con->in_hdr.middle_len);
+ unsigned int data_len = le32_to_cpu(con->in_hdr.data_len);
/* skip rest of message */
- dout("con_revoke_pages %p msg %p revoked\n", con, msg);
- con->in_base_pos = con->in_base_pos -
+ dout("%s %p msg %p revoked\n", __func__, con, msg);
+ con->in_base_pos = con->in_base_pos -
sizeof(struct ceph_msg_header) -
front_len -
middle_len -
@@ -2348,8 +3023,8 @@ void ceph_con_revoke_message(struct ceph_connection *con, struct ceph_msg *msg)
con->in_tag = CEPH_MSGR_TAG_READY;
con->in_seq++;
} else {
- dout("con_revoke_pages %p msg %p pages %p no-op\n",
- con, con->in_msg, msg);
+ dout("%s %p in_msg %p msg %p no-op\n",
+ __func__, con, con->in_msg, msg);
}
mutex_unlock(&con->mutex);
}
@@ -2360,13 +3035,97 @@ void ceph_con_revoke_message(struct ceph_connection *con, struct ceph_msg *msg)
void ceph_con_keepalive(struct ceph_connection *con)
{
dout("con_keepalive %p\n", con);
+ mutex_lock(&con->mutex);
clear_standby(con);
- if (test_and_set_bit(KEEPALIVE_PENDING, &con->state) == 0 &&
- test_and_set_bit(WRITE_PENDING, &con->state) == 0)
+ mutex_unlock(&con->mutex);
+ if (con_flag_test_and_set(con, CON_FLAG_KEEPALIVE_PENDING) == 0 &&
+ con_flag_test_and_set(con, CON_FLAG_WRITE_PENDING) == 0)
queue_con(con);
}
EXPORT_SYMBOL(ceph_con_keepalive);
+static struct ceph_msg_data *ceph_msg_data_create(enum ceph_msg_data_type type)
+{
+ struct ceph_msg_data *data;
+
+ if (WARN_ON(!ceph_msg_data_type_valid(type)))
+ return NULL;
+
+ data = kmem_cache_zalloc(ceph_msg_data_cache, GFP_NOFS);
+ if (data)
+ data->type = type;
+ INIT_LIST_HEAD(&data->links);
+
+ return data;
+}
+
+static void ceph_msg_data_destroy(struct ceph_msg_data *data)
+{
+ if (!data)
+ return;
+
+ WARN_ON(!list_empty(&data->links));
+ if (data->type == CEPH_MSG_DATA_PAGELIST) {
+ ceph_pagelist_release(data->pagelist);
+ kfree(data->pagelist);
+ }
+ kmem_cache_free(ceph_msg_data_cache, data);
+}
+
+void ceph_msg_data_add_pages(struct ceph_msg *msg, struct page **pages,
+ size_t length, size_t alignment)
+{
+ struct ceph_msg_data *data;
+
+ BUG_ON(!pages);
+ BUG_ON(!length);
+
+ data = ceph_msg_data_create(CEPH_MSG_DATA_PAGES);
+ BUG_ON(!data);
+ data->pages = pages;
+ data->length = length;
+ data->alignment = alignment & ~PAGE_MASK;
+
+ list_add_tail(&data->links, &msg->data);
+ msg->data_length += length;
+}
+EXPORT_SYMBOL(ceph_msg_data_add_pages);
+
+void ceph_msg_data_add_pagelist(struct ceph_msg *msg,
+ struct ceph_pagelist *pagelist)
+{
+ struct ceph_msg_data *data;
+
+ BUG_ON(!pagelist);
+ BUG_ON(!pagelist->length);
+
+ data = ceph_msg_data_create(CEPH_MSG_DATA_PAGELIST);
+ BUG_ON(!data);
+ data->pagelist = pagelist;
+
+ list_add_tail(&data->links, &msg->data);
+ msg->data_length += pagelist->length;
+}
+EXPORT_SYMBOL(ceph_msg_data_add_pagelist);
+
+#ifdef CONFIG_BLOCK
+void ceph_msg_data_add_bio(struct ceph_msg *msg, struct bio *bio,
+ size_t length)
+{
+ struct ceph_msg_data *data;
+
+ BUG_ON(!bio);
+
+ data = ceph_msg_data_create(CEPH_MSG_DATA_BIO);
+ BUG_ON(!data);
+ data->bio = bio;
+ data->bio_length = length;
+
+ list_add_tail(&data->links, &msg->data);
+ msg->data_length += length;
+}
+EXPORT_SYMBOL(ceph_msg_data_add_bio);
+#endif /* CONFIG_BLOCK */
/*
* construct a new message with given type, size
@@ -2377,53 +3136,21 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags,
{
struct ceph_msg *m;
- m = kmalloc(sizeof(*m), flags);
+ m = kmem_cache_zalloc(ceph_msg_cache, flags);
if (m == NULL)
goto out;
- kref_init(&m->kref);
- INIT_LIST_HEAD(&m->list_head);
- m->hdr.tid = 0;
m->hdr.type = cpu_to_le16(type);
m->hdr.priority = cpu_to_le16(CEPH_MSG_PRIO_DEFAULT);
- m->hdr.version = 0;
m->hdr.front_len = cpu_to_le32(front_len);
- m->hdr.middle_len = 0;
- m->hdr.data_len = 0;
- m->hdr.data_off = 0;
- m->hdr.reserved = 0;
- m->footer.front_crc = 0;
- m->footer.middle_crc = 0;
- m->footer.data_crc = 0;
- m->footer.flags = 0;
- m->front_max = front_len;
- m->front_is_vmalloc = false;
- m->more_to_follow = false;
- m->ack_stamp = 0;
- m->pool = NULL;
- /* middle */
- m->middle = NULL;
-
- /* data */
- m->nr_pages = 0;
- m->page_alignment = 0;
- m->pages = NULL;
- m->pagelist = NULL;
- m->bio = NULL;
- m->bio_iter = NULL;
- m->bio_seg = 0;
- m->trail = NULL;
+ INIT_LIST_HEAD(&m->list_head);
+ kref_init(&m->kref);
+ INIT_LIST_HEAD(&m->data);
/* front */
if (front_len) {
- if (front_len > PAGE_CACHE_SIZE) {
- m->front.iov_base = __vmalloc(front_len, flags,
- PAGE_KERNEL);
- m->front_is_vmalloc = true;
- } else {
- m->front.iov_base = kmalloc(front_len, flags);
- }
+ m->front.iov_base = ceph_kvmalloc(front_len, flags);
if (m->front.iov_base == NULL) {
dout("ceph_msg_new can't allocate %d bytes\n",
front_len);
@@ -2432,7 +3159,7 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags,
} else {
m->front.iov_base = NULL;
}
- m->front.iov_len = front_len;
+ m->front_alloc_len = m->front.iov_len = front_len;
dout("ceph_msg_new %p front %d\n", m, front_len);
return m;
@@ -2476,46 +3203,66 @@ static int ceph_alloc_middle(struct ceph_connection *con, struct ceph_msg *msg)
}
/*
- * Generic message allocator, for incoming messages.
+ * Allocate a message for receiving an incoming message on a
+ * connection, and save the result in con->in_msg. Uses the
+ * connection's private alloc_msg op if available.
+ *
+ * Returns 0 on success, or a negative error code.
+ *
+ * On success, if we set *skip = 1:
+ * - the next message should be skipped and ignored.
+ * - con->in_msg == NULL
+ * or if we set *skip = 0:
+ * - con->in_msg is non-null.
+ * On error (ENOMEM, EAGAIN, ...),
+ * - con->in_msg == NULL
*/
-static struct ceph_msg *ceph_alloc_msg(struct ceph_connection *con,
- struct ceph_msg_header *hdr,
- int *skip)
+static int ceph_con_in_msg_alloc(struct ceph_connection *con, int *skip)
{
- int type = le16_to_cpu(hdr->type);
- int front_len = le32_to_cpu(hdr->front_len);
+ struct ceph_msg_header *hdr = &con->in_hdr;
int middle_len = le32_to_cpu(hdr->middle_len);
- struct ceph_msg *msg = NULL;
- int ret;
+ struct ceph_msg *msg;
+ int ret = 0;
- if (con->ops->alloc_msg) {
- mutex_unlock(&con->mutex);
- msg = con->ops->alloc_msg(con, hdr, skip);
- mutex_lock(&con->mutex);
- if (!msg || *skip)
- return NULL;
- }
- if (!msg) {
- *skip = 0;
- msg = ceph_msg_new(type, front_len, GFP_NOFS, false);
- if (!msg) {
- pr_err("unable to allocate msg type %d len %d\n",
- type, front_len);
- return NULL;
- }
- msg->page_alignment = le16_to_cpu(hdr->data_off);
+ BUG_ON(con->in_msg != NULL);
+ BUG_ON(!con->ops->alloc_msg);
+
+ mutex_unlock(&con->mutex);
+ msg = con->ops->alloc_msg(con, hdr, skip);
+ mutex_lock(&con->mutex);
+ if (con->state != CON_STATE_OPEN) {
+ if (msg)
+ ceph_msg_put(msg);
+ return -EAGAIN;
+ }
+ if (msg) {
+ BUG_ON(*skip);
+ con->in_msg = msg;
+ con->in_msg->con = con->ops->get(con);
+ BUG_ON(con->in_msg->con == NULL);
+ } else {
+ /*
+ * Null message pointer means either we should skip
+ * this message or we couldn't allocate memory. The
+ * former is not an error.
+ */
+ if (*skip)
+ return 0;
+ con->error_msg = "error allocating memory for incoming message";
+
+ return -ENOMEM;
}
- memcpy(&msg->hdr, &con->in_hdr, sizeof(con->in_hdr));
+ memcpy(&con->in_msg->hdr, &con->in_hdr, sizeof(con->in_hdr));
- if (middle_len && !msg->middle) {
- ret = ceph_alloc_middle(con, msg);
+ if (middle_len && !con->in_msg->middle) {
+ ret = ceph_alloc_middle(con, con->in_msg);
if (ret < 0) {
- ceph_msg_put(msg);
- return NULL;
+ ceph_msg_put(con->in_msg);
+ con->in_msg = NULL;
}
}
- return msg;
+ return ret;
}
@@ -2525,11 +3272,8 @@ static struct ceph_msg *ceph_alloc_msg(struct ceph_connection *con,
void ceph_msg_kfree(struct ceph_msg *m)
{
dout("msg_kfree %p\n", m);
- if (m->front_is_vmalloc)
- vfree(m->front.iov_base);
- else
- kfree(m->front.iov_base);
- kfree(m);
+ ceph_kvfree(m->front.iov_base);
+ kmem_cache_free(ceph_msg_cache, m);
}
/*
@@ -2538,6 +3282,9 @@ void ceph_msg_kfree(struct ceph_msg *m)
void ceph_msg_last_put(struct kref *kref)
{
struct ceph_msg *m = container_of(kref, struct ceph_msg, kref);
+ LIST_HEAD(data);
+ struct list_head *links;
+ struct list_head *next;
dout("ceph_msg_put last one on %p\n", m);
WARN_ON(!list_empty(&m->list_head));
@@ -2547,16 +3294,16 @@ void ceph_msg_last_put(struct kref *kref)
ceph_buffer_put(m->middle);
m->middle = NULL;
}
- m->nr_pages = 0;
- m->pages = NULL;
- if (m->pagelist) {
- ceph_pagelist_release(m->pagelist);
- kfree(m->pagelist);
- m->pagelist = NULL;
- }
+ list_splice_init(&m->data, &data);
+ list_for_each_safe(links, next, &data) {
+ struct ceph_msg_data *data;
- m->trail = NULL;
+ data = list_entry(links, struct ceph_msg_data, links);
+ list_del_init(links);
+ ceph_msg_data_destroy(data);
+ }
+ m->data_length = 0;
if (m->pool)
ceph_msgpool_put(m->pool, m);
@@ -2567,8 +3314,8 @@ EXPORT_SYMBOL(ceph_msg_last_put);
void ceph_msg_dump(struct ceph_msg *msg)
{
- pr_debug("msg_dump %p (front_max %d nr_pages %d)\n", msg,
- msg->front_max, msg->nr_pages);
+ pr_debug("msg_dump %p (front_alloc_len %d length %zd)\n", msg,
+ msg->front_alloc_len, msg->data_length);
print_hex_dump(KERN_DEBUG, "header: ",
DUMP_PREFIX_OFFSET, 16, 1,
&msg->hdr, sizeof(msg->hdr), true);
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index 1845cde2622..067d3af2eaf 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -106,9 +106,9 @@ static void __send_prepared_auth_request(struct ceph_mon_client *monc, int len)
monc->pending_auth = 1;
monc->m_auth->front.iov_len = len;
monc->m_auth->hdr.front_len = cpu_to_le32(len);
- ceph_con_revoke(monc->con, monc->m_auth);
+ ceph_msg_revoke(monc->m_auth);
ceph_msg_get(monc->m_auth); /* keep our ref */
- ceph_con_send(monc->con, monc->m_auth);
+ ceph_con_send(&monc->con, monc->m_auth);
}
/*
@@ -117,8 +117,11 @@ static void __send_prepared_auth_request(struct ceph_mon_client *monc, int len)
static void __close_session(struct ceph_mon_client *monc)
{
dout("__close_session closing mon%d\n", monc->cur_mon);
- ceph_con_revoke(monc->con, monc->m_auth);
- ceph_con_close(monc->con);
+ ceph_msg_revoke(monc->m_auth);
+ ceph_msg_revoke_incoming(monc->m_auth_reply);
+ ceph_msg_revoke(monc->m_subscribe);
+ ceph_msg_revoke_incoming(monc->m_subscribe_ack);
+ ceph_con_close(&monc->con);
monc->cur_mon = -1;
monc->pending_auth = 0;
ceph_auth_reset(monc->auth);
@@ -142,15 +145,14 @@ static int __open_session(struct ceph_mon_client *monc)
monc->want_next_osdmap = !!monc->want_next_osdmap;
dout("open_session mon%d opening\n", monc->cur_mon);
- monc->con->peer_name.type = CEPH_ENTITY_TYPE_MON;
- monc->con->peer_name.num = cpu_to_le64(monc->cur_mon);
- ceph_con_open(monc->con,
+ ceph_con_open(&monc->con,
+ CEPH_ENTITY_TYPE_MON, monc->cur_mon,
&monc->monmap->mon_inst[monc->cur_mon].addr);
/* initiatiate authentication handshake */
ret = ceph_auth_build_hello(monc->auth,
monc->m_auth->front.iov_base,
- monc->m_auth->front_max);
+ monc->m_auth->front_alloc_len);
__send_prepared_auth_request(monc, ret);
} else {
dout("open_session mon%d already open\n", monc->cur_mon);
@@ -168,7 +170,7 @@ static bool __sub_expired(struct ceph_mon_client *monc)
*/
static void __schedule_delayed(struct ceph_mon_client *monc)
{
- unsigned delay;
+ unsigned int delay;
if (monc->cur_mon < 0 || __sub_expired(monc))
delay = 10 * HZ;
@@ -184,7 +186,7 @@ static void __schedule_delayed(struct ceph_mon_client *monc)
static void __send_subscribe(struct ceph_mon_client *monc)
{
dout("__send_subscribe sub_sent=%u exp=%u want_osd=%d\n",
- (unsigned)monc->sub_sent, __sub_expired(monc),
+ (unsigned int)monc->sub_sent, __sub_expired(monc),
monc->want_next_osdmap);
if ((__sub_expired(monc) && !monc->sub_sent) ||
monc->want_next_osdmap == 1) {
@@ -194,14 +196,14 @@ static void __send_subscribe(struct ceph_mon_client *monc)
int num;
p = msg->front.iov_base;
- end = p + msg->front_max;
+ end = p + msg->front_alloc_len;
num = 1 + !!monc->want_next_osdmap + !!monc->want_mdsmap;
ceph_encode_32(&p, num);
if (monc->want_next_osdmap) {
dout("__send_subscribe to 'osdmap' %u\n",
- (unsigned)monc->have_osdmap);
+ (unsigned int)monc->have_osdmap);
ceph_encode_string(&p, end, "osdmap", 6);
i = p;
i->have = cpu_to_le64(monc->have_osdmap);
@@ -211,7 +213,7 @@ static void __send_subscribe(struct ceph_mon_client *monc)
}
if (monc->want_mdsmap) {
dout("__send_subscribe to 'mdsmap' %u+\n",
- (unsigned)monc->have_mdsmap);
+ (unsigned int)monc->have_mdsmap);
ceph_encode_string(&p, end, "mdsmap", 6);
i = p;
i->have = cpu_to_le64(monc->have_mdsmap);
@@ -226,8 +228,8 @@ static void __send_subscribe(struct ceph_mon_client *monc)
msg->front.iov_len = p - msg->front.iov_base;
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
- ceph_con_revoke(monc->con, msg);
- ceph_con_send(monc->con, ceph_msg_get(msg));
+ ceph_msg_revoke(msg);
+ ceph_con_send(&monc->con, ceph_msg_get(msg));
monc->sub_sent = jiffies | 1; /* never 0 */
}
@@ -236,7 +238,7 @@ static void __send_subscribe(struct ceph_mon_client *monc)
static void handle_subscribe_ack(struct ceph_mon_client *monc,
struct ceph_msg *msg)
{
- unsigned seconds;
+ unsigned int seconds;
struct ceph_mon_subscribe_ack *h = msg->front.iov_base;
if (msg->front.iov_len < sizeof(*h))
@@ -247,7 +249,7 @@ static void handle_subscribe_ack(struct ceph_mon_client *monc,
if (monc->hunting) {
pr_info("mon%d %s session established\n",
monc->cur_mon,
- ceph_pr_addr(&monc->con->peer_addr.in_addr));
+ ceph_pr_addr(&monc->con.peer_addr.in_addr));
monc->hunting = false;
}
dout("handle_subscribe_ack after %d seconds\n", seconds);
@@ -294,6 +296,33 @@ void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc)
__send_subscribe(monc);
mutex_unlock(&monc->mutex);
}
+EXPORT_SYMBOL(ceph_monc_request_next_osdmap);
+
+int ceph_monc_wait_osdmap(struct ceph_mon_client *monc, u32 epoch,
+ unsigned long timeout)
+{
+ unsigned long started = jiffies;
+ int ret;
+
+ mutex_lock(&monc->mutex);
+ while (monc->have_osdmap < epoch) {
+ mutex_unlock(&monc->mutex);
+
+ if (timeout != 0 && time_after_eq(jiffies, started + timeout))
+ return -ETIMEDOUT;
+
+ ret = wait_event_interruptible_timeout(monc->client->auth_wq,
+ monc->have_osdmap >= epoch, timeout);
+ if (ret < 0)
+ return ret;
+
+ mutex_lock(&monc->mutex);
+ }
+
+ mutex_unlock(&monc->mutex);
+ return 0;
+}
+EXPORT_SYMBOL(ceph_monc_wait_osdmap);
/*
*
@@ -309,6 +338,17 @@ int ceph_monc_open_session(struct ceph_mon_client *monc)
EXPORT_SYMBOL(ceph_monc_open_session);
/*
+ * We require the fsid and global_id in order to initialize our
+ * debugfs dir.
+ */
+static bool have_debugfs_info(struct ceph_mon_client *monc)
+{
+ dout("have_debugfs_info fsid %d globalid %lld\n",
+ (int)monc->client->have_fsid, monc->auth->global_id);
+ return monc->client->have_fsid && monc->auth->global_id > 0;
+}
+
+/*
* The monitor responds with mount ack indicate mount success. The
* included client ticket allows the client to talk to MDSs and OSDs.
*/
@@ -318,9 +358,12 @@ static void ceph_monc_handle_map(struct ceph_mon_client *monc,
struct ceph_client *client = monc->client;
struct ceph_monmap *monmap = NULL, *old = monc->monmap;
void *p, *end;
+ int had_debugfs_info, init_debugfs = 0;
mutex_lock(&monc->mutex);
+ had_debugfs_info = have_debugfs_info(monc);
+
dout("handle_monmap\n");
p = msg->front.iov_base;
end = p + msg->front.iov_len;
@@ -342,12 +385,22 @@ static void ceph_monc_handle_map(struct ceph_mon_client *monc,
if (!client->have_fsid) {
client->have_fsid = true;
+ if (!had_debugfs_info && have_debugfs_info(monc)) {
+ pr_info("client%lld fsid %pU\n",
+ ceph_client_id(monc->client),
+ &monc->client->fsid);
+ init_debugfs = 1;
+ }
mutex_unlock(&monc->mutex);
- /*
- * do debugfs initialization without mutex to avoid
- * creating a locking dependency
- */
- ceph_debugfs_client_init(client);
+
+ if (init_debugfs) {
+ /*
+ * do debugfs initialization without mutex to avoid
+ * creating a locking dependency
+ */
+ ceph_debugfs_client_init(monc->client);
+ }
+
goto out_unlocked;
}
out:
@@ -439,6 +492,7 @@ static struct ceph_msg *get_generic_reply(struct ceph_connection *con,
m = NULL;
} else {
dout("get_generic_reply %lld got %p\n", tid, req->reply);
+ *skip = 0;
m = ceph_msg_get(req->reply);
/*
* we don't need to track the connection reading into
@@ -450,18 +504,17 @@ static struct ceph_msg *get_generic_reply(struct ceph_connection *con,
return m;
}
-static int do_generic_request(struct ceph_mon_client *monc,
- struct ceph_mon_generic_request *req)
+static int __do_generic_request(struct ceph_mon_client *monc, u64 tid,
+ struct ceph_mon_generic_request *req)
{
int err;
/* register request */
- mutex_lock(&monc->mutex);
- req->tid = ++monc->last_tid;
+ req->tid = tid != 0 ? tid : ++monc->last_tid;
req->request->hdr.tid = cpu_to_le64(req->tid);
__insert_generic_request(monc, req);
monc->num_generic_requests++;
- ceph_con_send(monc->con, ceph_msg_get(req->request));
+ ceph_con_send(&monc->con, ceph_msg_get(req->request));
mutex_unlock(&monc->mutex);
err = wait_for_completion_interruptible(&req->completion);
@@ -469,13 +522,24 @@ static int do_generic_request(struct ceph_mon_client *monc,
mutex_lock(&monc->mutex);
rb_erase(&req->node, &monc->generic_request_tree);
monc->num_generic_requests--;
- mutex_unlock(&monc->mutex);
if (!err)
err = req->result;
return err;
}
+static int do_generic_request(struct ceph_mon_client *monc,
+ struct ceph_mon_generic_request *req)
+{
+ int err;
+
+ mutex_lock(&monc->mutex);
+ err = __do_generic_request(monc, 0, req);
+ mutex_unlock(&monc->mutex);
+
+ return err;
+}
+
/*
* statfs
*/
@@ -552,6 +616,96 @@ out:
}
EXPORT_SYMBOL(ceph_monc_do_statfs);
+static void handle_get_version_reply(struct ceph_mon_client *monc,
+ struct ceph_msg *msg)
+{
+ struct ceph_mon_generic_request *req;
+ u64 tid = le64_to_cpu(msg->hdr.tid);
+ void *p = msg->front.iov_base;
+ void *end = p + msg->front_alloc_len;
+ u64 handle;
+
+ dout("%s %p tid %llu\n", __func__, msg, tid);
+
+ ceph_decode_need(&p, end, 2*sizeof(u64), bad);
+ handle = ceph_decode_64(&p);
+ if (tid != 0 && tid != handle)
+ goto bad;
+
+ mutex_lock(&monc->mutex);
+ req = __lookup_generic_req(monc, handle);
+ if (req) {
+ *(u64 *)req->buf = ceph_decode_64(&p);
+ req->result = 0;
+ get_generic_request(req);
+ }
+ mutex_unlock(&monc->mutex);
+ if (req) {
+ complete_all(&req->completion);
+ put_generic_request(req);
+ }
+
+ return;
+bad:
+ pr_err("corrupt mon_get_version reply\n");
+ ceph_msg_dump(msg);
+}
+
+/*
+ * Send MMonGetVersion and wait for the reply.
+ *
+ * @what: one of "mdsmap", "osdmap" or "monmap"
+ */
+int ceph_monc_do_get_version(struct ceph_mon_client *monc, const char *what,
+ u64 *newest)
+{
+ struct ceph_mon_generic_request *req;
+ void *p, *end;
+ u64 tid;
+ int err;
+
+ req = kzalloc(sizeof(*req), GFP_NOFS);
+ if (!req)
+ return -ENOMEM;
+
+ kref_init(&req->kref);
+ req->buf = newest;
+ req->buf_len = sizeof(*newest);
+ init_completion(&req->completion);
+
+ req->request = ceph_msg_new(CEPH_MSG_MON_GET_VERSION,
+ sizeof(u64) + sizeof(u32) + strlen(what),
+ GFP_NOFS, true);
+ if (!req->request) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ req->reply = ceph_msg_new(CEPH_MSG_MON_GET_VERSION_REPLY, 1024,
+ GFP_NOFS, true);
+ if (!req->reply) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ p = req->request->front.iov_base;
+ end = p + req->request->front_alloc_len;
+
+ /* fill out request */
+ mutex_lock(&monc->mutex);
+ tid = ++monc->last_tid;
+ ceph_encode_64(&p, tid); /* handle */
+ ceph_encode_string(&p, end, what, strlen(what));
+
+ err = __do_generic_request(monc, tid, req);
+
+ mutex_unlock(&monc->mutex);
+out:
+ kref_put(&req->kref, release_generic_request);
+ return err;
+}
+EXPORT_SYMBOL(ceph_monc_do_get_version);
+
/*
* pool ops
*/
@@ -610,7 +764,7 @@ bad:
/*
* Do a synchronous pool op.
*/
-int ceph_monc_do_poolop(struct ceph_mon_client *monc, u32 op,
+static int do_poolop(struct ceph_mon_client *monc, u32 op,
u32 pool, u64 snapid,
char *buf, int len)
{
@@ -660,7 +814,7 @@ out:
int ceph_monc_create_snapid(struct ceph_mon_client *monc,
u32 pool, u64 *snapid)
{
- return ceph_monc_do_poolop(monc, POOL_OP_CREATE_UNMANAGED_SNAP,
+ return do_poolop(monc, POOL_OP_CREATE_UNMANAGED_SNAP,
pool, 0, (char *)snapid, sizeof(*snapid));
}
@@ -669,8 +823,8 @@ EXPORT_SYMBOL(ceph_monc_create_snapid);
int ceph_monc_delete_snapid(struct ceph_mon_client *monc,
u32 pool, u64 snapid)
{
- return ceph_monc_do_poolop(monc, POOL_OP_CREATE_UNMANAGED_SNAP,
- pool, snapid, 0, 0);
+ return do_poolop(monc, POOL_OP_CREATE_UNMANAGED_SNAP,
+ pool, snapid, NULL, 0);
}
@@ -684,8 +838,9 @@ static void __resend_generic_request(struct ceph_mon_client *monc)
for (p = rb_first(&monc->generic_request_tree); p; p = rb_next(p)) {
req = rb_entry(p, struct ceph_mon_generic_request, node);
- ceph_con_revoke(monc->con, req->request);
- ceph_con_send(monc->con, ceph_msg_get(req->request));
+ ceph_msg_revoke(req->request);
+ ceph_msg_revoke_incoming(req->reply);
+ ceph_con_send(&monc->con, ceph_msg_get(req->request));
}
}
@@ -705,11 +860,11 @@ static void delayed_work(struct work_struct *work)
__close_session(monc);
__open_session(monc); /* continue hunting */
} else {
- ceph_con_keepalive(monc->con);
+ ceph_con_keepalive(&monc->con);
__validate_auth(monc);
- if (monc->auth->ops->is_authenticated(monc->auth))
+ if (ceph_auth_is_authenticated(monc->auth))
__send_subscribe(monc);
}
__schedule_delayed(monc);
@@ -741,7 +896,6 @@ static int build_initial_monmap(struct ceph_mon_client *monc)
monc->monmap->mon_inst[i].name.num = cpu_to_le64(i);
}
monc->monmap->num_mon = num_mon;
- monc->have_fsid = false;
return 0;
}
@@ -760,19 +914,12 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl)
goto out;
/* connection */
- monc->con = kmalloc(sizeof(*monc->con), GFP_KERNEL);
- if (!monc->con)
- goto out_monmap;
- ceph_con_init(monc->client->msgr, monc->con);
- monc->con->private = monc;
- monc->con->ops = &mon_con_ops;
-
/* authentication */
monc->auth = ceph_auth_init(cl->options->name,
cl->options->key);
if (IS_ERR(monc->auth)) {
err = PTR_ERR(monc->auth);
- goto out_con;
+ goto out_monmap;
}
monc->auth->want_keys =
CEPH_ENTITY_TYPE_AUTH | CEPH_ENTITY_TYPE_MON |
@@ -801,6 +948,9 @@ int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl)
if (!monc->m_auth)
goto out_auth_reply;
+ ceph_con_init(&monc->con, monc, &mon_con_ops,
+ &monc->client->msgr);
+
monc->cur_mon = -1;
monc->hunting = true;
monc->sub_renew_after = jiffies;
@@ -824,8 +974,6 @@ out_subscribe_ack:
ceph_msg_put(monc->m_subscribe_ack);
out_auth:
ceph_auth_destroy(monc->auth);
-out_con:
- monc->con->ops->put(monc->con);
out_monmap:
kfree(monc->monmap);
out:
@@ -841,12 +989,16 @@ void ceph_monc_stop(struct ceph_mon_client *monc)
mutex_lock(&monc->mutex);
__close_session(monc);
- monc->con->private = NULL;
- monc->con->ops->put(monc->con);
- monc->con = NULL;
-
mutex_unlock(&monc->mutex);
+ /*
+ * flush msgr queue before we destroy ourselves to ensure that:
+ * - any work that references our embedded con is finished.
+ * - any osd_client or other work that may reference an authorizer
+ * finishes before we shut down the auth subsystem.
+ */
+ ceph_msgr_flush();
+
ceph_auth_destroy(monc->auth);
ceph_msg_put(monc->m_auth);
@@ -863,31 +1015,47 @@ static void handle_auth_reply(struct ceph_mon_client *monc,
{
int ret;
int was_auth = 0;
+ int had_debugfs_info, init_debugfs = 0;
mutex_lock(&monc->mutex);
- if (monc->auth->ops)
- was_auth = monc->auth->ops->is_authenticated(monc->auth);
+ had_debugfs_info = have_debugfs_info(monc);
+ was_auth = ceph_auth_is_authenticated(monc->auth);
monc->pending_auth = 0;
ret = ceph_handle_auth_reply(monc->auth, msg->front.iov_base,
msg->front.iov_len,
monc->m_auth->front.iov_base,
- monc->m_auth->front_max);
+ monc->m_auth->front_alloc_len);
if (ret < 0) {
monc->client->auth_err = ret;
wake_up_all(&monc->client->auth_wq);
} else if (ret > 0) {
__send_prepared_auth_request(monc, ret);
- } else if (!was_auth && monc->auth->ops->is_authenticated(monc->auth)) {
+ } else if (!was_auth && ceph_auth_is_authenticated(monc->auth)) {
dout("authenticated, starting session\n");
- monc->client->msgr->inst.name.type = CEPH_ENTITY_TYPE_CLIENT;
- monc->client->msgr->inst.name.num =
+ monc->client->msgr.inst.name.type = CEPH_ENTITY_TYPE_CLIENT;
+ monc->client->msgr.inst.name.num =
cpu_to_le64(monc->auth->global_id);
__send_subscribe(monc);
__resend_generic_request(monc);
}
+
+ if (!had_debugfs_info && have_debugfs_info(monc)) {
+ pr_info("client%lld fsid %pU\n",
+ ceph_client_id(monc->client),
+ &monc->client->fsid);
+ init_debugfs = 1;
+ }
mutex_unlock(&monc->mutex);
+
+ if (init_debugfs) {
+ /*
+ * do debugfs initialization without mutex to avoid
+ * creating a locking dependency
+ */
+ ceph_debugfs_client_init(monc->client);
+ }
}
static int __validate_auth(struct ceph_mon_client *monc)
@@ -898,7 +1066,7 @@ static int __validate_auth(struct ceph_mon_client *monc)
return 0;
ret = ceph_build_auth(monc->auth, monc->m_auth->front.iov_base,
- monc->m_auth->front_max);
+ monc->m_auth->front_alloc_len);
if (ret <= 0)
return ret; /* either an error, or no need to authenticate */
__send_prepared_auth_request(monc, ret);
@@ -940,6 +1108,10 @@ static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
handle_statfs_reply(monc, msg);
break;
+ case CEPH_MSG_MON_GET_VERSION_REPLY:
+ handle_get_version_reply(monc, msg);
+ break;
+
case CEPH_MSG_POOLOP_REPLY:
handle_poolop_reply(monc, msg);
break;
@@ -988,10 +1160,21 @@ static struct ceph_msg *mon_alloc_msg(struct ceph_connection *con,
case CEPH_MSG_AUTH_REPLY:
m = ceph_msg_get(monc->m_auth_reply);
break;
+ case CEPH_MSG_MON_GET_VERSION_REPLY:
+ if (le64_to_cpu(hdr->tid) != 0)
+ return get_generic_reply(con, hdr, skip);
+
+ /*
+ * Older OSDs don't set reply tid even if the orignal
+ * request had a non-zero tid. Workaround this weirdness
+ * by falling through to the allocate case.
+ */
case CEPH_MSG_MON_MAP:
case CEPH_MSG_MDS_MAP:
case CEPH_MSG_OSD_MAP:
m = ceph_msg_new(type, front_len, GFP_NOFS, false);
+ if (!m)
+ return NULL; /* ENOMEM--return skip == 0 */
break;
}
@@ -1021,7 +1204,7 @@ static void mon_fault(struct ceph_connection *con)
if (!monc->hunting)
pr_info("mon%d %s session lost, "
"hunting for new mon\n", monc->cur_mon,
- ceph_pr_addr(&monc->con->peer_addr.in_addr));
+ ceph_pr_addr(&monc->con.peer_addr.in_addr));
__close_session(monc);
if (!monc->hunting) {
@@ -1036,9 +1219,23 @@ out:
mutex_unlock(&monc->mutex);
}
+/*
+ * We can ignore refcounting on the connection struct, as all references
+ * will come from the messenger workqueue, which is drained prior to
+ * mon_client destruction.
+ */
+static struct ceph_connection *con_get(struct ceph_connection *con)
+{
+ return con;
+}
+
+static void con_put(struct ceph_connection *con)
+{
+}
+
static const struct ceph_connection_operations mon_con_ops = {
- .get = ceph_con_get,
- .put = ceph_con_put,
+ .get = con_get,
+ .put = con_put,
.dispatch = dispatch,
.fault = mon_fault,
.alloc_msg = mon_alloc_msg,
diff --git a/net/ceph/msgpool.c b/net/ceph/msgpool.c
index 11d5f4196a7..ddec1c10ac8 100644
--- a/net/ceph/msgpool.c
+++ b/net/ceph/msgpool.c
@@ -12,7 +12,7 @@ static void *msgpool_alloc(gfp_t gfp_mask, void *arg)
struct ceph_msgpool *pool = arg;
struct ceph_msg *msg;
- msg = ceph_msg_new(0, pool->front_len, gfp_mask, true);
+ msg = ceph_msg_new(pool->type, pool->front_len, gfp_mask, true);
if (!msg) {
dout("msgpool_alloc %s failed\n", pool->name);
} else {
@@ -32,10 +32,11 @@ static void msgpool_free(void *element, void *arg)
ceph_msg_put(msg);
}
-int ceph_msgpool_init(struct ceph_msgpool *pool,
+int ceph_msgpool_init(struct ceph_msgpool *pool, int type,
int front_len, int size, bool blocking, const char *name)
{
dout("msgpool %s init\n", name);
+ pool->type = type;
pool->front_len = front_len;
pool->pool = mempool_create(size, msgpool_alloc, msgpool_free, pool);
if (!pool->pool)
@@ -61,7 +62,7 @@ struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *pool,
WARN_ON(1);
/* try to alloc a fresh message */
- return ceph_msg_new(0, front_len, GFP_NOFS, false);
+ return ceph_msg_new(pool->type, front_len, GFP_NOFS, false);
}
msg = mempool_alloc(pool->pool, GFP_NOFS);
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 5e254055c91..05be0c18169 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1,3 +1,4 @@
+
#include <linux/ceph/ceph_debug.h>
#include <linux/module.h>
@@ -21,9 +22,11 @@
#define OSD_OP_FRONT_LEN 4096
#define OSD_OPREPLY_FRONT_LEN 512
+static struct kmem_cache *ceph_osd_request_cache;
+
static const struct ceph_connection_operations osd_con_ops;
-static void send_queued(struct ceph_osd_client *osdc);
+static void __send_queued(struct ceph_osd_client *osdc);
static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd);
static void __register_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req);
@@ -32,61 +35,6 @@ static void __unregister_linger_request(struct ceph_osd_client *osdc,
static void __send_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req);
-static int op_needs_trail(int op)
-{
- switch (op) {
- case CEPH_OSD_OP_GETXATTR:
- case CEPH_OSD_OP_SETXATTR:
- case CEPH_OSD_OP_CMPXATTR:
- case CEPH_OSD_OP_CALL:
- case CEPH_OSD_OP_NOTIFY:
- return 1;
- default:
- return 0;
- }
-}
-
-static int op_has_extent(int op)
-{
- return (op == CEPH_OSD_OP_READ ||
- op == CEPH_OSD_OP_WRITE);
-}
-
-void ceph_calc_raw_layout(struct ceph_osd_client *osdc,
- struct ceph_file_layout *layout,
- u64 snapid,
- u64 off, u64 *plen, u64 *bno,
- struct ceph_osd_request *req,
- struct ceph_osd_req_op *op)
-{
- struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base;
- u64 orig_len = *plen;
- u64 objoff, objlen; /* extent in object */
-
- reqhead->snapid = cpu_to_le64(snapid);
-
- /* object extent? */
- ceph_calc_file_object_mapping(layout, off, plen, bno,
- &objoff, &objlen);
- if (*plen < orig_len)
- dout(" skipping last %llu, final file extent %llu~%llu\n",
- orig_len - *plen, off, *plen);
-
- if (op_has_extent(op->op)) {
- op->extent.offset = objoff;
- op->extent.length = objlen;
- }
- req->r_num_pages = calc_pages_for(off, *plen);
- req->r_page_alignment = off & ~PAGE_MASK;
- if (op->op == CEPH_OSD_OP_WRITE)
- op->payload_len = *plen;
-
- dout("calc_layout bno=%llx %llu~%llu (%d pages)\n",
- *bno, objoff, objlen, req->r_num_pages);
-
-}
-EXPORT_SYMBOL(ceph_calc_raw_layout);
-
/*
* Implement client access to distributed object storage cluster.
*
@@ -112,20 +60,238 @@ EXPORT_SYMBOL(ceph_calc_raw_layout);
*
* fill osd op in request message.
*/
-static void calc_layout(struct ceph_osd_client *osdc,
- struct ceph_vino vino,
- struct ceph_file_layout *layout,
- u64 off, u64 *plen,
- struct ceph_osd_request *req,
- struct ceph_osd_req_op *op)
+static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen,
+ u64 *objnum, u64 *objoff, u64 *objlen)
+{
+ u64 orig_len = *plen;
+ int r;
+
+ /* object extent? */
+ r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum,
+ objoff, objlen);
+ if (r < 0)
+ return r;
+ if (*objlen < orig_len) {
+ *plen = *objlen;
+ dout(" skipping last %llu, final file extent %llu~%llu\n",
+ orig_len - *plen, off, *plen);
+ }
+
+ dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen);
+
+ return 0;
+}
+
+static void ceph_osd_data_init(struct ceph_osd_data *osd_data)
+{
+ memset(osd_data, 0, sizeof (*osd_data));
+ osd_data->type = CEPH_OSD_DATA_TYPE_NONE;
+}
+
+static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data,
+ struct page **pages, u64 length, u32 alignment,
+ bool pages_from_pool, bool own_pages)
+{
+ osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;
+ osd_data->pages = pages;
+ osd_data->length = length;
+ osd_data->alignment = alignment;
+ osd_data->pages_from_pool = pages_from_pool;
+ osd_data->own_pages = own_pages;
+}
+
+static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data,
+ struct ceph_pagelist *pagelist)
+{
+ osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST;
+ osd_data->pagelist = pagelist;
+}
+
+#ifdef CONFIG_BLOCK
+static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data,
+ struct bio *bio, size_t bio_length)
+{
+ osd_data->type = CEPH_OSD_DATA_TYPE_BIO;
+ osd_data->bio = bio;
+ osd_data->bio_length = bio_length;
+}
+#endif /* CONFIG_BLOCK */
+
+#define osd_req_op_data(oreq, whch, typ, fld) \
+ ({ \
+ BUG_ON(whch >= (oreq)->r_num_ops); \
+ &(oreq)->r_ops[whch].typ.fld; \
+ })
+
+static struct ceph_osd_data *
+osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which)
+{
+ BUG_ON(which >= osd_req->r_num_ops);
+
+ return &osd_req->r_ops[which].raw_data_in;
+}
+
+struct ceph_osd_data *
+osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req,
+ unsigned int which)
+{
+ return osd_req_op_data(osd_req, which, extent, osd_data);
+}
+EXPORT_SYMBOL(osd_req_op_extent_osd_data);
+
+struct ceph_osd_data *
+osd_req_op_cls_response_data(struct ceph_osd_request *osd_req,
+ unsigned int which)
+{
+ return osd_req_op_data(osd_req, which, cls, response_data);
+}
+EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */
+
+void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req,
+ unsigned int which, struct page **pages,
+ u64 length, u32 alignment,
+ bool pages_from_pool, bool own_pages)
+{
+ struct ceph_osd_data *osd_data;
+
+ osd_data = osd_req_op_raw_data_in(osd_req, which);
+ ceph_osd_data_pages_init(osd_data, pages, length, alignment,
+ pages_from_pool, own_pages);
+}
+EXPORT_SYMBOL(osd_req_op_raw_data_in_pages);
+
+void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req,
+ unsigned int which, struct page **pages,
+ u64 length, u32 alignment,
+ bool pages_from_pool, bool own_pages)
+{
+ struct ceph_osd_data *osd_data;
+
+ osd_data = osd_req_op_data(osd_req, which, extent, osd_data);
+ ceph_osd_data_pages_init(osd_data, pages, length, alignment,
+ pages_from_pool, own_pages);
+}
+EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages);
+
+void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req,
+ unsigned int which, struct ceph_pagelist *pagelist)
+{
+ struct ceph_osd_data *osd_data;
+
+ osd_data = osd_req_op_data(osd_req, which, extent, osd_data);
+ ceph_osd_data_pagelist_init(osd_data, pagelist);
+}
+EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist);
+
+#ifdef CONFIG_BLOCK
+void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req,
+ unsigned int which, struct bio *bio, size_t bio_length)
+{
+ struct ceph_osd_data *osd_data;
+
+ osd_data = osd_req_op_data(osd_req, which, extent, osd_data);
+ ceph_osd_data_bio_init(osd_data, bio, bio_length);
+}
+EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio);
+#endif /* CONFIG_BLOCK */
+
+static void osd_req_op_cls_request_info_pagelist(
+ struct ceph_osd_request *osd_req,
+ unsigned int which, struct ceph_pagelist *pagelist)
+{
+ struct ceph_osd_data *osd_data;
+
+ osd_data = osd_req_op_data(osd_req, which, cls, request_info);
+ ceph_osd_data_pagelist_init(osd_data, pagelist);
+}
+
+void osd_req_op_cls_request_data_pagelist(
+ struct ceph_osd_request *osd_req,
+ unsigned int which, struct ceph_pagelist *pagelist)
+{
+ struct ceph_osd_data *osd_data;
+
+ osd_data = osd_req_op_data(osd_req, which, cls, request_data);
+ ceph_osd_data_pagelist_init(osd_data, pagelist);
+}
+EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist);
+
+void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req,
+ unsigned int which, struct page **pages, u64 length,
+ u32 alignment, bool pages_from_pool, bool own_pages)
+{
+ struct ceph_osd_data *osd_data;
+
+ osd_data = osd_req_op_data(osd_req, which, cls, request_data);
+ ceph_osd_data_pages_init(osd_data, pages, length, alignment,
+ pages_from_pool, own_pages);
+}
+EXPORT_SYMBOL(osd_req_op_cls_request_data_pages);
+
+void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req,
+ unsigned int which, struct page **pages, u64 length,
+ u32 alignment, bool pages_from_pool, bool own_pages)
+{
+ struct ceph_osd_data *osd_data;
+
+ osd_data = osd_req_op_data(osd_req, which, cls, response_data);
+ ceph_osd_data_pages_init(osd_data, pages, length, alignment,
+ pages_from_pool, own_pages);
+}
+EXPORT_SYMBOL(osd_req_op_cls_response_data_pages);
+
+static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data)
+{
+ switch (osd_data->type) {
+ case CEPH_OSD_DATA_TYPE_NONE:
+ return 0;
+ case CEPH_OSD_DATA_TYPE_PAGES:
+ return osd_data->length;
+ case CEPH_OSD_DATA_TYPE_PAGELIST:
+ return (u64)osd_data->pagelist->length;
+#ifdef CONFIG_BLOCK
+ case CEPH_OSD_DATA_TYPE_BIO:
+ return (u64)osd_data->bio_length;
+#endif /* CONFIG_BLOCK */
+ default:
+ WARN(true, "unrecognized data type %d\n", (int)osd_data->type);
+ return 0;
+ }
+}
+
+static void ceph_osd_data_release(struct ceph_osd_data *osd_data)
+{
+ if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) {
+ int num_pages;
+
+ num_pages = calc_pages_for((u64)osd_data->alignment,
+ (u64)osd_data->length);
+ ceph_release_page_vector(osd_data->pages, num_pages);
+ }
+ ceph_osd_data_init(osd_data);
+}
+
+static void osd_req_op_data_release(struct ceph_osd_request *osd_req,
+ unsigned int which)
{
- u64 bno;
+ struct ceph_osd_req_op *op;
- ceph_calc_raw_layout(osdc, layout, vino.snap, off,
- plen, &bno, req, op);
+ BUG_ON(which >= osd_req->r_num_ops);
+ op = &osd_req->r_ops[which];
- snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno);
- req->r_oid_len = strlen(req->r_oid);
+ switch (op->op) {
+ case CEPH_OSD_OP_READ:
+ case CEPH_OSD_OP_WRITE:
+ ceph_osd_data_release(&op->extent.osd_data);
+ break;
+ case CEPH_OSD_OP_CALL:
+ ceph_osd_data_release(&op->cls.request_info);
+ ceph_osd_data_release(&op->cls.request_data);
+ ceph_osd_data_release(&op->cls.response_data);
+ break;
+ default:
+ break;
+ }
}
/*
@@ -133,94 +299,77 @@ static void calc_layout(struct ceph_osd_client *osdc,
*/
void ceph_osdc_release_request(struct kref *kref)
{
- struct ceph_osd_request *req = container_of(kref,
- struct ceph_osd_request,
- r_kref);
+ struct ceph_osd_request *req;
+ unsigned int which;
+ req = container_of(kref, struct ceph_osd_request, r_kref);
if (req->r_request)
ceph_msg_put(req->r_request);
- if (req->r_reply)
+ if (req->r_reply) {
+ ceph_msg_revoke_incoming(req->r_reply);
ceph_msg_put(req->r_reply);
- if (req->r_con_filling_msg) {
- dout("release_request revoking pages %p from con %p\n",
- req->r_pages, req->r_con_filling_msg);
- ceph_con_revoke_message(req->r_con_filling_msg,
- req->r_reply);
- ceph_con_put(req->r_con_filling_msg);
- }
- if (req->r_own_pages)
- ceph_release_page_vector(req->r_pages,
- req->r_num_pages);
-#ifdef CONFIG_BLOCK
- if (req->r_bio)
- bio_put(req->r_bio);
-#endif
- ceph_put_snap_context(req->r_snapc);
- if (req->r_trail) {
- ceph_pagelist_release(req->r_trail);
- kfree(req->r_trail);
}
+
+ for (which = 0; which < req->r_num_ops; which++)
+ osd_req_op_data_release(req, which);
+
+ ceph_put_snap_context(req->r_snapc);
if (req->r_mempool)
mempool_free(req, req->r_osdc->req_mempool);
else
- kfree(req);
-}
-EXPORT_SYMBOL(ceph_osdc_release_request);
-
-static int get_num_ops(struct ceph_osd_req_op *ops, int *needs_trail)
-{
- int i = 0;
+ kmem_cache_free(ceph_osd_request_cache, req);
- if (needs_trail)
- *needs_trail = 0;
- while (ops[i].op) {
- if (needs_trail && op_needs_trail(ops[i].op))
- *needs_trail = 1;
- i++;
- }
-
- return i;
}
+EXPORT_SYMBOL(ceph_osdc_release_request);
struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
- int flags,
struct ceph_snap_context *snapc,
- struct ceph_osd_req_op *ops,
+ unsigned int num_ops,
bool use_mempool,
- gfp_t gfp_flags,
- struct page **pages,
- struct bio *bio)
+ gfp_t gfp_flags)
{
struct ceph_osd_request *req;
struct ceph_msg *msg;
- int needs_trail;
- int num_op = get_num_ops(ops, &needs_trail);
- size_t msg_size = sizeof(struct ceph_osd_request_head);
+ size_t msg_size;
+
+ BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX);
+ BUG_ON(num_ops > CEPH_OSD_MAX_OP);
- msg_size += num_op*sizeof(struct ceph_osd_op);
+ msg_size = 4 + 4 + 8 + 8 + 4+8;
+ msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */
+ msg_size += 1 + 8 + 4 + 4; /* pg_t */
+ msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */
+ msg_size += 2 + num_ops*sizeof(struct ceph_osd_op);
+ msg_size += 8; /* snapid */
+ msg_size += 8; /* snap_seq */
+ msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */
+ msg_size += 4;
if (use_mempool) {
req = mempool_alloc(osdc->req_mempool, gfp_flags);
memset(req, 0, sizeof(*req));
} else {
- req = kzalloc(sizeof(*req), gfp_flags);
+ req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags);
}
if (req == NULL)
return NULL;
req->r_osdc = osdc;
req->r_mempool = use_mempool;
+ req->r_num_ops = num_ops;
kref_init(&req->r_kref);
init_completion(&req->r_completion);
init_completion(&req->r_safe_completion);
+ RB_CLEAR_NODE(&req->r_node);
INIT_LIST_HEAD(&req->r_unsafe_item);
INIT_LIST_HEAD(&req->r_linger_item);
INIT_LIST_HEAD(&req->r_linger_osd);
INIT_LIST_HEAD(&req->r_req_lru_item);
- req->r_flags = flags;
+ INIT_LIST_HEAD(&req->r_osd_item);
- WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0);
+ req->r_base_oloc.pool = -1;
+ req->r_target_oloc.pool = -1;
/* create reply message */
if (use_mempool)
@@ -234,19 +383,7 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
}
req->r_reply = msg;
- /* allocate space for the trailing data */
- if (needs_trail) {
- req->r_trail = kmalloc(sizeof(struct ceph_pagelist), gfp_flags);
- if (!req->r_trail) {
- ceph_osdc_put_request(req);
- return NULL;
- }
- ceph_pagelist_init(req->r_trail);
- }
/* create request message; allow space for oid */
- msg_size += MAX_OBJ_NAME_SIZE;
- if (snapc)
- msg_size += sizeof(u64) * snapc->num_snaps;
if (use_mempool)
msg = ceph_msgpool_get(&osdc->msgpool_op, 0);
else
@@ -256,177 +393,335 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
return NULL;
}
- msg->hdr.type = cpu_to_le16(CEPH_MSG_OSD_OP);
memset(msg->front.iov_base, 0, msg->front.iov_len);
req->r_request = msg;
- req->r_pages = pages;
-#ifdef CONFIG_BLOCK
- if (bio) {
- req->r_bio = bio;
- bio_get(req->r_bio);
- }
-#endif
return req;
}
EXPORT_SYMBOL(ceph_osdc_alloc_request);
-static void osd_req_encode_op(struct ceph_osd_request *req,
- struct ceph_osd_op *dst,
- struct ceph_osd_req_op *src)
+static bool osd_req_opcode_valid(u16 opcode)
{
- dst->op = cpu_to_le16(src->op);
-
- switch (dst->op) {
+ switch (opcode) {
case CEPH_OSD_OP_READ:
+ case CEPH_OSD_OP_STAT:
+ case CEPH_OSD_OP_MAPEXT:
+ case CEPH_OSD_OP_MASKTRUNC:
+ case CEPH_OSD_OP_SPARSE_READ:
+ case CEPH_OSD_OP_NOTIFY:
+ case CEPH_OSD_OP_NOTIFY_ACK:
+ case CEPH_OSD_OP_ASSERT_VER:
case CEPH_OSD_OP_WRITE:
- dst->extent.offset =
- cpu_to_le64(src->extent.offset);
- dst->extent.length =
- cpu_to_le64(src->extent.length);
- dst->extent.truncate_size =
- cpu_to_le64(src->extent.truncate_size);
- dst->extent.truncate_seq =
- cpu_to_le32(src->extent.truncate_seq);
- break;
-
+ case CEPH_OSD_OP_WRITEFULL:
+ case CEPH_OSD_OP_TRUNCATE:
+ case CEPH_OSD_OP_ZERO:
+ case CEPH_OSD_OP_DELETE:
+ case CEPH_OSD_OP_APPEND:
+ case CEPH_OSD_OP_STARTSYNC:
+ case CEPH_OSD_OP_SETTRUNC:
+ case CEPH_OSD_OP_TRIMTRUNC:
+ case CEPH_OSD_OP_TMAPUP:
+ case CEPH_OSD_OP_TMAPPUT:
+ case CEPH_OSD_OP_TMAPGET:
+ case CEPH_OSD_OP_CREATE:
+ case CEPH_OSD_OP_ROLLBACK:
+ case CEPH_OSD_OP_WATCH:
+ case CEPH_OSD_OP_OMAPGETKEYS:
+ case CEPH_OSD_OP_OMAPGETVALS:
+ case CEPH_OSD_OP_OMAPGETHEADER:
+ case CEPH_OSD_OP_OMAPGETVALSBYKEYS:
+ case CEPH_OSD_OP_OMAPSETVALS:
+ case CEPH_OSD_OP_OMAPSETHEADER:
+ case CEPH_OSD_OP_OMAPCLEAR:
+ case CEPH_OSD_OP_OMAPRMKEYS:
+ case CEPH_OSD_OP_OMAP_CMP:
+ case CEPH_OSD_OP_SETALLOCHINT:
+ case CEPH_OSD_OP_CLONERANGE:
+ case CEPH_OSD_OP_ASSERT_SRC_VERSION:
+ case CEPH_OSD_OP_SRC_CMPXATTR:
case CEPH_OSD_OP_GETXATTR:
- case CEPH_OSD_OP_SETXATTR:
+ case CEPH_OSD_OP_GETXATTRS:
case CEPH_OSD_OP_CMPXATTR:
- BUG_ON(!req->r_trail);
-
- dst->xattr.name_len = cpu_to_le32(src->xattr.name_len);
- dst->xattr.value_len = cpu_to_le32(src->xattr.value_len);
- dst->xattr.cmp_op = src->xattr.cmp_op;
- dst->xattr.cmp_mode = src->xattr.cmp_mode;
- ceph_pagelist_append(req->r_trail, src->xattr.name,
- src->xattr.name_len);
- ceph_pagelist_append(req->r_trail, src->xattr.val,
- src->xattr.value_len);
- break;
+ case CEPH_OSD_OP_SETXATTR:
+ case CEPH_OSD_OP_SETXATTRS:
+ case CEPH_OSD_OP_RESETXATTRS:
+ case CEPH_OSD_OP_RMXATTR:
+ case CEPH_OSD_OP_PULL:
+ case CEPH_OSD_OP_PUSH:
+ case CEPH_OSD_OP_BALANCEREADS:
+ case CEPH_OSD_OP_UNBALANCEREADS:
+ case CEPH_OSD_OP_SCRUB:
+ case CEPH_OSD_OP_SCRUB_RESERVE:
+ case CEPH_OSD_OP_SCRUB_UNRESERVE:
+ case CEPH_OSD_OP_SCRUB_STOP:
+ case CEPH_OSD_OP_SCRUB_MAP:
+ case CEPH_OSD_OP_WRLOCK:
+ case CEPH_OSD_OP_WRUNLOCK:
+ case CEPH_OSD_OP_RDLOCK:
+ case CEPH_OSD_OP_RDUNLOCK:
+ case CEPH_OSD_OP_UPLOCK:
+ case CEPH_OSD_OP_DNLOCK:
case CEPH_OSD_OP_CALL:
- BUG_ON(!req->r_trail);
-
- dst->cls.class_len = src->cls.class_len;
- dst->cls.method_len = src->cls.method_len;
- dst->cls.indata_len = cpu_to_le32(src->cls.indata_len);
-
- ceph_pagelist_append(req->r_trail, src->cls.class_name,
- src->cls.class_len);
- ceph_pagelist_append(req->r_trail, src->cls.method_name,
- src->cls.method_len);
- ceph_pagelist_append(req->r_trail, src->cls.indata,
- src->cls.indata_len);
- break;
- case CEPH_OSD_OP_ROLLBACK:
- dst->snap.snapid = cpu_to_le64(src->snap.snapid);
- break;
- case CEPH_OSD_OP_STARTSYNC:
- break;
- case CEPH_OSD_OP_NOTIFY:
- {
- __le32 prot_ver = cpu_to_le32(src->watch.prot_ver);
- __le32 timeout = cpu_to_le32(src->watch.timeout);
-
- BUG_ON(!req->r_trail);
-
- ceph_pagelist_append(req->r_trail,
- &prot_ver, sizeof(prot_ver));
- ceph_pagelist_append(req->r_trail,
- &timeout, sizeof(timeout));
- }
- case CEPH_OSD_OP_NOTIFY_ACK:
- case CEPH_OSD_OP_WATCH:
- dst->watch.cookie = cpu_to_le64(src->watch.cookie);
- dst->watch.ver = cpu_to_le64(src->watch.ver);
- dst->watch.flag = src->watch.flag;
- break;
+ case CEPH_OSD_OP_PGLS:
+ case CEPH_OSD_OP_PGLS_FILTER:
+ return true;
default:
- pr_err("unrecognized osd opcode %d\n", dst->op);
- WARN_ON(1);
- break;
+ return false;
}
- dst->payload_len = cpu_to_le32(src->payload_len);
}
/*
- * build new request AND message
- *
+ * This is an osd op init function for opcodes that have no data or
+ * other information associated with them. It also serves as a
+ * common init routine for all the other init functions, below.
*/
-void ceph_osdc_build_request(struct ceph_osd_request *req,
- u64 off, u64 *plen,
- struct ceph_osd_req_op *src_ops,
- struct ceph_snap_context *snapc,
- struct timespec *mtime,
- const char *oid,
- int oid_len)
+static struct ceph_osd_req_op *
+_osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which,
+ u16 opcode)
{
- struct ceph_msg *msg = req->r_request;
- struct ceph_osd_request_head *head;
- struct ceph_osd_req_op *src_op;
- struct ceph_osd_op *op;
- void *p;
- int num_op = get_num_ops(src_ops, NULL);
- size_t msg_size = sizeof(*head) + num_op*sizeof(*op);
- int flags = req->r_flags;
- u64 data_len = 0;
- int i;
+ struct ceph_osd_req_op *op;
- head = msg->front.iov_base;
- op = (void *)(head + 1);
- p = (void *)(op + num_op);
+ BUG_ON(which >= osd_req->r_num_ops);
+ BUG_ON(!osd_req_opcode_valid(opcode));
- req->r_snapc = ceph_get_snap_context(snapc);
+ op = &osd_req->r_ops[which];
+ memset(op, 0, sizeof (*op));
+ op->op = opcode;
+
+ return op;
+}
+
+void osd_req_op_init(struct ceph_osd_request *osd_req,
+ unsigned int which, u16 opcode)
+{
+ (void)_osd_req_op_init(osd_req, which, opcode);
+}
+EXPORT_SYMBOL(osd_req_op_init);
+
+void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
+ unsigned int which, u16 opcode,
+ u64 offset, u64 length,
+ u64 truncate_size, u32 truncate_seq)
+{
+ struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode);
+ size_t payload_len = 0;
+
+ BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE &&
+ opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO &&
+ opcode != CEPH_OSD_OP_TRUNCATE);
+
+ op->extent.offset = offset;
+ op->extent.length = length;
+ op->extent.truncate_size = truncate_size;
+ op->extent.truncate_seq = truncate_seq;
+ if (opcode == CEPH_OSD_OP_WRITE)
+ payload_len += length;
+
+ op->payload_len = payload_len;
+}
+EXPORT_SYMBOL(osd_req_op_extent_init);
+
+void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
+ unsigned int which, u64 length)
+{
+ struct ceph_osd_req_op *op;
+ u64 previous;
- head->client_inc = cpu_to_le32(1); /* always, for now. */
- head->flags = cpu_to_le32(flags);
- if (flags & CEPH_OSD_FLAG_WRITE)
- ceph_encode_timespec(&head->mtime, mtime);
- head->num_ops = cpu_to_le16(num_op);
+ BUG_ON(which >= osd_req->r_num_ops);
+ op = &osd_req->r_ops[which];
+ previous = op->extent.length;
+ if (length == previous)
+ return; /* Nothing to do */
+ BUG_ON(length > previous);
- /* fill in oid */
- head->object_len = cpu_to_le32(oid_len);
- memcpy(p, oid, oid_len);
- p += oid_len;
+ op->extent.length = length;
+ op->payload_len -= previous - length;
+}
+EXPORT_SYMBOL(osd_req_op_extent_update);
+
+void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which,
+ u16 opcode, const char *class, const char *method)
+{
+ struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode);
+ struct ceph_pagelist *pagelist;
+ size_t payload_len = 0;
+ size_t size;
+
+ BUG_ON(opcode != CEPH_OSD_OP_CALL);
+
+ pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS);
+ BUG_ON(!pagelist);
+ ceph_pagelist_init(pagelist);
+
+ op->cls.class_name = class;
+ size = strlen(class);
+ BUG_ON(size > (size_t) U8_MAX);
+ op->cls.class_len = size;
+ ceph_pagelist_append(pagelist, class, size);
+ payload_len += size;
+
+ op->cls.method_name = method;
+ size = strlen(method);
+ BUG_ON(size > (size_t) U8_MAX);
+ op->cls.method_len = size;
+ ceph_pagelist_append(pagelist, method, size);
+ payload_len += size;
+
+ osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist);
+
+ op->cls.argc = 0; /* currently unused */
+
+ op->payload_len = payload_len;
+}
+EXPORT_SYMBOL(osd_req_op_cls_init);
+
+void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
+ unsigned int which, u16 opcode,
+ u64 cookie, u64 version, int flag)
+{
+ struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode);
+
+ BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH);
+
+ op->watch.cookie = cookie;
+ op->watch.ver = version;
+ if (opcode == CEPH_OSD_OP_WATCH && flag)
+ op->watch.flag = (u8)1;
+}
+EXPORT_SYMBOL(osd_req_op_watch_init);
+
+void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
+ unsigned int which,
+ u64 expected_object_size,
+ u64 expected_write_size)
+{
+ struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which,
+ CEPH_OSD_OP_SETALLOCHINT);
- src_op = src_ops;
- while (src_op->op) {
- osd_req_encode_op(req, op, src_op);
- src_op++;
- op++;
+ op->alloc_hint.expected_object_size = expected_object_size;
+ op->alloc_hint.expected_write_size = expected_write_size;
+
+ /*
+ * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed
+ * not worth a feature bit. Set FAILOK per-op flag to make
+ * sure older osds don't trip over an unsupported opcode.
+ */
+ op->flags |= CEPH_OSD_OP_FLAG_FAILOK;
+}
+EXPORT_SYMBOL(osd_req_op_alloc_hint_init);
+
+static void ceph_osdc_msg_data_add(struct ceph_msg *msg,
+ struct ceph_osd_data *osd_data)
+{
+ u64 length = ceph_osd_data_length(osd_data);
+
+ if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
+ BUG_ON(length > (u64) SIZE_MAX);
+ if (length)
+ ceph_msg_data_add_pages(msg, osd_data->pages,
+ length, osd_data->alignment);
+ } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) {
+ BUG_ON(!length);
+ ceph_msg_data_add_pagelist(msg, osd_data->pagelist);
+#ifdef CONFIG_BLOCK
+ } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) {
+ ceph_msg_data_add_bio(msg, osd_data->bio, length);
+#endif
+ } else {
+ BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE);
}
+}
- if (req->r_trail)
- data_len += req->r_trail->length;
+static u64 osd_req_encode_op(struct ceph_osd_request *req,
+ struct ceph_osd_op *dst, unsigned int which)
+{
+ struct ceph_osd_req_op *src;
+ struct ceph_osd_data *osd_data;
+ u64 request_data_len = 0;
+ u64 data_length;
- if (snapc) {
- head->snap_seq = cpu_to_le64(snapc->seq);
- head->num_snaps = cpu_to_le32(snapc->num_snaps);
- for (i = 0; i < snapc->num_snaps; i++) {
- put_unaligned_le64(snapc->snaps[i], p);
- p += sizeof(u64);
- }
+ BUG_ON(which >= req->r_num_ops);
+ src = &req->r_ops[which];
+ if (WARN_ON(!osd_req_opcode_valid(src->op))) {
+ pr_err("unrecognized osd opcode %d\n", src->op);
+
+ return 0;
}
- if (flags & CEPH_OSD_FLAG_WRITE) {
- req->r_request->hdr.data_off = cpu_to_le16(off);
- req->r_request->hdr.data_len = cpu_to_le32(*plen + data_len);
- } else if (data_len) {
- req->r_request->hdr.data_off = 0;
- req->r_request->hdr.data_len = cpu_to_le32(data_len);
+ switch (src->op) {
+ case CEPH_OSD_OP_STAT:
+ osd_data = &src->raw_data_in;
+ ceph_osdc_msg_data_add(req->r_reply, osd_data);
+ break;
+ case CEPH_OSD_OP_READ:
+ case CEPH_OSD_OP_WRITE:
+ case CEPH_OSD_OP_ZERO:
+ case CEPH_OSD_OP_DELETE:
+ case CEPH_OSD_OP_TRUNCATE:
+ if (src->op == CEPH_OSD_OP_WRITE)
+ request_data_len = src->extent.length;
+ dst->extent.offset = cpu_to_le64(src->extent.offset);
+ dst->extent.length = cpu_to_le64(src->extent.length);
+ dst->extent.truncate_size =
+ cpu_to_le64(src->extent.truncate_size);
+ dst->extent.truncate_seq =
+ cpu_to_le32(src->extent.truncate_seq);
+ osd_data = &src->extent.osd_data;
+ if (src->op == CEPH_OSD_OP_WRITE)
+ ceph_osdc_msg_data_add(req->r_request, osd_data);
+ else
+ ceph_osdc_msg_data_add(req->r_reply, osd_data);
+ break;
+ case CEPH_OSD_OP_CALL:
+ dst->cls.class_len = src->cls.class_len;
+ dst->cls.method_len = src->cls.method_len;
+ osd_data = &src->cls.request_info;
+ ceph_osdc_msg_data_add(req->r_request, osd_data);
+ BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST);
+ request_data_len = osd_data->pagelist->length;
+
+ osd_data = &src->cls.request_data;
+ data_length = ceph_osd_data_length(osd_data);
+ if (data_length) {
+ BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE);
+ dst->cls.indata_len = cpu_to_le32(data_length);
+ ceph_osdc_msg_data_add(req->r_request, osd_data);
+ src->payload_len += data_length;
+ request_data_len += data_length;
+ }
+ osd_data = &src->cls.response_data;
+ ceph_osdc_msg_data_add(req->r_reply, osd_data);
+ break;
+ case CEPH_OSD_OP_STARTSYNC:
+ break;
+ case CEPH_OSD_OP_NOTIFY_ACK:
+ case CEPH_OSD_OP_WATCH:
+ dst->watch.cookie = cpu_to_le64(src->watch.cookie);
+ dst->watch.ver = cpu_to_le64(src->watch.ver);
+ dst->watch.flag = src->watch.flag;
+ break;
+ case CEPH_OSD_OP_SETALLOCHINT:
+ dst->alloc_hint.expected_object_size =
+ cpu_to_le64(src->alloc_hint.expected_object_size);
+ dst->alloc_hint.expected_write_size =
+ cpu_to_le64(src->alloc_hint.expected_write_size);
+ break;
+ default:
+ pr_err("unsupported osd opcode %s\n",
+ ceph_osd_op_name(src->op));
+ WARN_ON(1);
+
+ return 0;
}
- req->r_request->page_alignment = req->r_page_alignment;
+ dst->op = cpu_to_le16(src->op);
+ dst->flags = cpu_to_le32(src->flags);
+ dst->payload_len = cpu_to_le32(src->payload_len);
- BUG_ON(p > msg->front.iov_base + msg->front.iov_len);
- msg_size = p - msg->front.iov_base;
- msg->front.iov_len = msg_size;
- msg->hdr.front_len = cpu_to_le32(msg_size);
- return;
+ return request_data_len;
}
-EXPORT_SYMBOL(ceph_osdc_build_request);
/*
* build new request AND message, calculate layout, and adjust file
@@ -442,51 +737,67 @@ EXPORT_SYMBOL(ceph_osdc_build_request);
struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
struct ceph_file_layout *layout,
struct ceph_vino vino,
- u64 off, u64 *plen,
+ u64 off, u64 *plen, int num_ops,
int opcode, int flags,
struct ceph_snap_context *snapc,
- int do_sync,
u32 truncate_seq,
u64 truncate_size,
- struct timespec *mtime,
- bool use_mempool, int num_reply,
- int page_align)
+ bool use_mempool)
{
- struct ceph_osd_req_op ops[3];
struct ceph_osd_request *req;
-
- ops[0].op = opcode;
- ops[0].extent.truncate_seq = truncate_seq;
- ops[0].extent.truncate_size = truncate_size;
- ops[0].payload_len = 0;
-
- if (do_sync) {
- ops[1].op = CEPH_OSD_OP_STARTSYNC;
- ops[1].payload_len = 0;
- ops[2].op = 0;
- } else
- ops[1].op = 0;
-
- req = ceph_osdc_alloc_request(osdc, flags,
- snapc, ops,
- use_mempool,
- GFP_NOFS, NULL, NULL);
+ u64 objnum = 0;
+ u64 objoff = 0;
+ u64 objlen = 0;
+ u32 object_size;
+ u64 object_base;
+ int r;
+
+ BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE &&
+ opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO &&
+ opcode != CEPH_OSD_OP_TRUNCATE);
+
+ req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool,
+ GFP_NOFS);
if (!req)
- return NULL;
+ return ERR_PTR(-ENOMEM);
+
+ req->r_flags = flags;
/* calculate max write size */
- calc_layout(osdc, vino, layout, off, plen, req, ops);
- req->r_file_layout = *layout; /* keep a copy */
+ r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen);
+ if (r < 0) {
+ ceph_osdc_put_request(req);
+ return ERR_PTR(r);
+ }
- /* in case it differs from natural (file) alignment that
- calc_layout filled in for us */
- req->r_num_pages = calc_pages_for(page_align, *plen);
- req->r_page_alignment = page_align;
+ object_size = le32_to_cpu(layout->fl_object_size);
+ object_base = off - objoff;
+ if (!(truncate_seq == 1 && truncate_size == -1ULL)) {
+ if (truncate_size <= object_base) {
+ truncate_size = 0;
+ } else {
+ truncate_size -= object_base;
+ if (truncate_size > object_size)
+ truncate_size = object_size;
+ }
+ }
- ceph_osdc_build_request(req, off, plen, ops,
- snapc,
- mtime,
- req->r_oid, req->r_oid_len);
+ osd_req_op_extent_init(req, 0, opcode, objoff, objlen,
+ truncate_size, truncate_seq);
+
+ /*
+ * A second op in the ops array means the caller wants to
+ * also issue a include a 'startsync' command so that the
+ * osd will flush data quickly.
+ */
+ if (num_ops > 1)
+ osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC);
+
+ req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout);
+
+ snprintf(req->r_base_oid.name, sizeof(req->r_base_oid.name),
+ "%llx.%08llx", vino.ino, objnum);
+ req->r_base_oid.name_len = strlen(req->r_base_oid.name);
return req;
}
@@ -564,21 +875,46 @@ static void __kick_osd_requests(struct ceph_osd_client *osdc,
struct ceph_osd *osd)
{
struct ceph_osd_request *req, *nreq;
+ LIST_HEAD(resend);
int err;
dout("__kick_osd_requests osd%d\n", osd->o_osd);
err = __reset_osd(osdc, osd);
- if (err == -EAGAIN)
+ if (err)
return;
-
+ /*
+ * Build up a list of requests to resend by traversing the
+ * osd's list of requests. Requests for a given object are
+ * sent in tid order, and that is also the order they're
+ * kept on this list. Therefore all requests that are in
+ * flight will be found first, followed by all requests that
+ * have not yet been sent. And to resend requests while
+ * preserving this order we will want to put any sent
+ * requests back on the front of the osd client's unsent
+ * list.
+ *
+ * So we build a separate ordered list of already-sent
+ * requests for the affected osd and splice it onto the
+ * front of the osd client's unsent list. Once we've seen a
+ * request that has not yet been sent we're done. Those
+ * requests are already sitting right where they belong.
+ */
list_for_each_entry(req, &osd->o_requests, r_osd_item) {
- list_move(&req->r_req_lru_item, &osdc->req_unsent);
- dout("requeued %p tid %llu osd%d\n", req, req->r_tid,
+ if (!req->r_sent)
+ break;
+ list_move_tail(&req->r_req_lru_item, &resend);
+ dout("requeueing %p tid %llu osd%d\n", req, req->r_tid,
osd->o_osd);
if (!req->r_linger)
req->r_flags |= CEPH_OSD_FLAG_RETRY;
}
+ list_splice(&resend, &osdc->req_unsent);
+ /*
+ * Linger requests are re-registered before sending, which
+ * sets up a new tid for each. We add them to the unsent
+ * list at the end to keep things in tid order.
+ */
list_for_each_entry_safe(req, nreq, &osd->o_linger_requests,
r_linger_osd) {
/*
@@ -587,22 +923,14 @@ static void __kick_osd_requests(struct ceph_osd_client *osdc,
*/
BUG_ON(!list_empty(&req->r_req_lru_item));
__register_request(osdc, req);
- list_add(&req->r_req_lru_item, &osdc->req_unsent);
- list_add(&req->r_osd_item, &req->r_osd->o_requests);
+ list_add_tail(&req->r_req_lru_item, &osdc->req_unsent);
+ list_add_tail(&req->r_osd_item, &req->r_osd->o_requests);
__unregister_linger_request(osdc, req);
dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid,
osd->o_osd);
}
}
-static void kick_osd_requests(struct ceph_osd_client *osdc,
- struct ceph_osd *kickosd)
-{
- mutex_lock(&osdc->request_mutex);
- __kick_osd_requests(osdc, kickosd);
- mutex_unlock(&osdc->request_mutex);
-}
-
/*
* If the osd connection drops, we need to resubmit all requests.
*/
@@ -616,15 +944,17 @@ static void osd_reset(struct ceph_connection *con)
dout("osd_reset osd%d\n", osd->o_osd);
osdc = osd->o_osdc;
down_read(&osdc->map_sem);
- kick_osd_requests(osdc, osd);
- send_queued(osdc);
+ mutex_lock(&osdc->request_mutex);
+ __kick_osd_requests(osdc, osd);
+ __send_queued(osdc);
+ mutex_unlock(&osdc->request_mutex);
up_read(&osdc->map_sem);
}
/*
* Track open sessions with osds.
*/
-static struct ceph_osd *create_osd(struct ceph_osd_client *osdc)
+static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum)
{
struct ceph_osd *osd;
@@ -634,15 +964,14 @@ static struct ceph_osd *create_osd(struct ceph_osd_client *osdc)
atomic_set(&osd->o_ref, 1);
osd->o_osdc = osdc;
+ osd->o_osd = onum;
+ RB_CLEAR_NODE(&osd->o_node);
INIT_LIST_HEAD(&osd->o_requests);
INIT_LIST_HEAD(&osd->o_linger_requests);
INIT_LIST_HEAD(&osd->o_osd_lru);
osd->o_incarnation = 1;
- ceph_con_init(osdc->client->msgr, &osd->o_con);
- osd->o_con.private = osd;
- osd->o_con.ops = &osd_con_ops;
- osd->o_con.peer_name.type = CEPH_ENTITY_TYPE_OSD;
+ ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr);
INIT_LIST_HEAD(&osd->o_keepalive_item);
return osd;
@@ -664,11 +993,10 @@ static void put_osd(struct ceph_osd *osd)
{
dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref),
atomic_read(&osd->o_ref) - 1);
- if (atomic_dec_and_test(&osd->o_ref)) {
+ if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) {
struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth;
- if (osd->o_authorizer)
- ac->ops->destroy_authorizer(ac, osd->o_authorizer);
+ ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer);
kfree(osd);
}
}
@@ -688,7 +1016,7 @@ static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
static void remove_all_osds(struct ceph_osd_client *osdc)
{
- dout("__remove_old_osds %p\n", osdc);
+ dout("%s %p\n", __func__, osdc);
mutex_lock(&osdc->request_mutex);
while (!RB_EMPTY_ROOT(&osdc->osds)) {
struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds),
@@ -733,29 +1061,35 @@ static void remove_old_osds(struct ceph_osd_client *osdc)
*/
static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
{
- struct ceph_osd_request *req;
- int ret = 0;
+ struct ceph_entity_addr *peer_addr;
dout("__reset_osd %p osd%d\n", osd, osd->o_osd);
if (list_empty(&osd->o_requests) &&
list_empty(&osd->o_linger_requests)) {
__remove_osd(osdc, osd);
- } else if (memcmp(&osdc->osdmap->osd_addr[osd->o_osd],
- &osd->o_con.peer_addr,
- sizeof(osd->o_con.peer_addr)) == 0 &&
- !ceph_con_opened(&osd->o_con)) {
- dout(" osd addr hasn't changed and connection never opened,"
- " letting msgr retry");
+
+ return -ENODEV;
+ }
+
+ peer_addr = &osdc->osdmap->osd_addr[osd->o_osd];
+ if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) &&
+ !ceph_con_opened(&osd->o_con)) {
+ struct ceph_osd_request *req;
+
+ dout("osd addr hasn't changed and connection never opened, "
+ "letting msgr retry\n");
/* touch each r_stamp for handle_timeout()'s benfit */
list_for_each_entry(req, &osd->o_requests, r_osd_item)
req->r_stamp = jiffies;
- ret = -EAGAIN;
- } else {
- ceph_con_close(&osd->o_con);
- ceph_con_open(&osd->o_con, &osdc->osdmap->osd_addr[osd->o_osd]);
- osd->o_incarnation++;
+
+ return -EAGAIN;
}
- return ret;
+
+ ceph_con_close(&osd->o_con);
+ ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr);
+ osd->o_incarnation++;
+
+ return 0;
}
static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new)
@@ -827,27 +1161,25 @@ static void __register_request(struct ceph_osd_client *osdc,
}
}
-static void register_request(struct ceph_osd_client *osdc,
- struct ceph_osd_request *req)
-{
- mutex_lock(&osdc->request_mutex);
- __register_request(osdc, req);
- mutex_unlock(&osdc->request_mutex);
-}
-
/*
* called under osdc->request_mutex
*/
static void __unregister_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req)
{
+ if (RB_EMPTY_NODE(&req->r_node)) {
+ dout("__unregister_request %p tid %lld not registered\n",
+ req, req->r_tid);
+ return;
+ }
+
dout("__unregister_request %p tid %lld\n", req, req->r_tid);
rb_erase(&req->r_node, &osdc->requests);
osdc->num_requests--;
if (req->r_osd) {
/* make sure the original request isn't in flight. */
- ceph_con_revoke(&req->r_osd->o_con, req->r_request);
+ ceph_msg_revoke(req->r_request);
list_del_init(&req->r_osd_item);
if (list_empty(&req->r_osd->o_requests) &&
@@ -859,9 +1191,9 @@ static void __unregister_request(struct ceph_osd_client *osdc,
req->r_osd = NULL;
}
+ list_del_init(&req->r_req_lru_item);
ceph_osdc_put_request(req);
- list_del_init(&req->r_req_lru_item);
if (osdc->num_requests == 0) {
dout(" no requests, canceling timeout\n");
__cancel_osd_timeout(osdc);
@@ -874,7 +1206,7 @@ static void __unregister_request(struct ceph_osd_client *osdc,
static void __cancel_request(struct ceph_osd_request *req)
{
if (req->r_sent && req->r_osd) {
- ceph_con_revoke(&req->r_osd->o_con, req->r_request);
+ ceph_msg_revoke(req->r_request);
req->r_sent = 0;
}
}
@@ -883,16 +1215,19 @@ static void __register_linger_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req)
{
dout("__register_linger_request %p\n", req);
+ ceph_osdc_get_request(req);
list_add_tail(&req->r_linger_item, &osdc->req_linger);
- list_add_tail(&req->r_linger_osd, &req->r_osd->o_linger_requests);
+ if (req->r_osd)
+ list_add_tail(&req->r_linger_osd,
+ &req->r_osd->o_linger_requests);
}
static void __unregister_linger_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req)
{
dout("__unregister_linger_request %p\n", req);
+ list_del_init(&req->r_linger_item);
if (req->r_osd) {
- list_del_init(&req->r_linger_item);
list_del_init(&req->r_linger_osd);
if (list_empty(&req->r_osd->o_requests) &&
@@ -903,6 +1238,7 @@ static void __unregister_linger_request(struct ceph_osd_client *osdc,
if (list_empty(&req->r_osd_item))
req->r_osd = NULL;
}
+ ceph_osdc_put_request(req);
}
void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
@@ -910,8 +1246,8 @@ void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
{
mutex_lock(&osdc->request_mutex);
if (req->r_linger) {
+ req->r_linger = 0;
__unregister_linger_request(osdc, req);
- ceph_osdc_put_request(req);
}
mutex_unlock(&osdc->request_mutex);
}
@@ -923,16 +1259,66 @@ void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
if (!req->r_linger) {
dout("set_request_linger %p\n", req);
req->r_linger = 1;
- /*
- * caller is now responsible for calling
- * unregister_linger_request
- */
- ceph_osdc_get_request(req);
}
}
EXPORT_SYMBOL(ceph_osdc_set_request_linger);
/*
+ * Returns whether a request should be blocked from being sent
+ * based on the current osdmap and osd_client settings.
+ *
+ * Caller should hold map_sem for read.
+ */
+static bool __req_should_be_paused(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req)
+{
+ bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD);
+ bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) ||
+ ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL);
+ return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) ||
+ (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr);
+}
+
+/*
+ * Calculate mapping of a request to a PG. Takes tiering into account.
+ */
+static int __calc_request_pg(struct ceph_osdmap *osdmap,
+ struct ceph_osd_request *req,
+ struct ceph_pg *pg_out)
+{
+ bool need_check_tiering;
+
+ need_check_tiering = false;
+ if (req->r_target_oloc.pool == -1) {
+ req->r_target_oloc = req->r_base_oloc; /* struct */
+ need_check_tiering = true;
+ }
+ if (req->r_target_oid.name_len == 0) {
+ ceph_oid_copy(&req->r_target_oid, &req->r_base_oid);
+ need_check_tiering = true;
+ }
+
+ if (need_check_tiering &&
+ (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) {
+ struct ceph_pg_pool_info *pi;
+
+ pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool);
+ if (pi) {
+ if ((req->r_flags & CEPH_OSD_FLAG_READ) &&
+ pi->read_tier >= 0)
+ req->r_target_oloc.pool = pi->read_tier;
+ if ((req->r_flags & CEPH_OSD_FLAG_WRITE) &&
+ pi->write_tier >= 0)
+ req->r_target_oloc.pool = pi->write_tier;
+ }
+ /* !pi is caught in ceph_oloc_oid_to_pg() */
+ }
+
+ return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc,
+ &req->r_target_oid, pg_out);
+}
+
+/*
* Pick an osd (the first 'up' osd in the pg), allocate the osd struct
* (as needed), and set the request r_osd appropriately. If there is
* no up osd, set r_osd to NULL. Move the request to the appropriate list
@@ -945,38 +1331,41 @@ EXPORT_SYMBOL(ceph_osdc_set_request_linger);
static int __map_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req, int force_resend)
{
- struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base;
struct ceph_pg pgid;
int acting[CEPH_PG_MAX_SIZE];
- int o = -1, num = 0;
+ int num, o;
int err;
+ bool was_paused;
dout("map_request %p tid %lld\n", req, req->r_tid);
- err = ceph_calc_object_layout(&reqhead->layout, req->r_oid,
- &req->r_file_layout, osdc->osdmap);
+
+ err = __calc_request_pg(osdc->osdmap, req, &pgid);
if (err) {
list_move(&req->r_req_lru_item, &osdc->req_notarget);
return err;
}
- pgid = reqhead->layout.ol_pgid;
req->r_pgid = pgid;
- err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting);
- if (err > 0) {
- o = acting[0];
- num = err;
- }
+ num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o);
+ if (num < 0)
+ num = 0;
+
+ was_paused = req->r_paused;
+ req->r_paused = __req_should_be_paused(osdc, req);
+ if (was_paused && !req->r_paused)
+ force_resend = 1;
if ((!force_resend &&
req->r_osd && req->r_osd->o_osd == o &&
req->r_sent >= req->r_osd->o_incarnation &&
req->r_num_pg_osds == num &&
memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) ||
- (req->r_osd == NULL && o == -1))
+ (req->r_osd == NULL && o == -1) ||
+ req->r_paused)
return 0; /* no change */
- dout("map_request tid %llu pgid %d.%x osd%d (was osd%d)\n",
- req->r_tid, le32_to_cpu(pgid.pool), le16_to_cpu(pgid.ps), o,
+ dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n",
+ req->r_tid, pgid.pool, pgid.seed, o,
req->r_osd ? req->r_osd->o_osd : -1);
/* record full pg acting set */
@@ -992,26 +1381,26 @@ static int __map_request(struct ceph_osd_client *osdc,
req->r_osd = __lookup_osd(osdc, o);
if (!req->r_osd && o >= 0) {
err = -ENOMEM;
- req->r_osd = create_osd(osdc);
+ req->r_osd = create_osd(osdc, o);
if (!req->r_osd) {
list_move(&req->r_req_lru_item, &osdc->req_notarget);
goto out;
}
dout("map_request osd %p is osd%d\n", req->r_osd, o);
- req->r_osd->o_osd = o;
- req->r_osd->o_con.peer_name.num = cpu_to_le64(o);
__insert_osd(osdc, req->r_osd);
- ceph_con_open(&req->r_osd->o_con, &osdc->osdmap->osd_addr[o]);
+ ceph_con_open(&req->r_osd->o_con,
+ CEPH_ENTITY_TYPE_OSD, o,
+ &osdc->osdmap->osd_addr[o]);
}
if (req->r_osd) {
__remove_osd_from_lru(req->r_osd);
- list_add(&req->r_osd_item, &req->r_osd->o_requests);
- list_move(&req->r_req_lru_item, &osdc->req_unsent);
+ list_add_tail(&req->r_osd_item, &req->r_osd->o_requests);
+ list_move_tail(&req->r_req_lru_item, &osdc->req_unsent);
} else {
- list_move(&req->r_req_lru_item, &osdc->req_notarget);
+ list_move_tail(&req->r_req_lru_item, &osdc->req_notarget);
}
err = 1; /* osd or pg changed */
@@ -1025,37 +1414,77 @@ out:
static void __send_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req)
{
- struct ceph_osd_request_head *reqhead;
-
- dout("send_request %p tid %llu to osd%d flags %d\n",
- req, req->r_tid, req->r_osd->o_osd, req->r_flags);
+ void *p;
- reqhead = req->r_request->front.iov_base;
- reqhead->osdmap_epoch = cpu_to_le32(osdc->osdmap->epoch);
- reqhead->flags |= cpu_to_le32(req->r_flags); /* e.g., RETRY */
- reqhead->reassert_version = req->r_reassert_version;
+ dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n",
+ req, req->r_tid, req->r_osd->o_osd, req->r_flags,
+ (unsigned long long)req->r_pgid.pool, req->r_pgid.seed);
+
+ /* fill in message content that changes each time we send it */
+ put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch);
+ put_unaligned_le32(req->r_flags, req->r_request_flags);
+ put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool);
+ p = req->r_request_pgid;
+ ceph_encode_64(&p, req->r_pgid.pool);
+ ceph_encode_32(&p, req->r_pgid.seed);
+ put_unaligned_le64(1, req->r_request_attempts); /* FIXME */
+ memcpy(req->r_request_reassert_version, &req->r_reassert_version,
+ sizeof(req->r_reassert_version));
req->r_stamp = jiffies;
list_move_tail(&req->r_req_lru_item, &osdc->req_lru);
ceph_msg_get(req->r_request); /* send consumes a ref */
- ceph_con_send(&req->r_osd->o_con, req->r_request);
+
req->r_sent = req->r_osd->o_incarnation;
+
+ ceph_con_send(&req->r_osd->o_con, req->r_request);
}
/*
* Send any requests in the queue (req_unsent).
*/
-static void send_queued(struct ceph_osd_client *osdc)
+static void __send_queued(struct ceph_osd_client *osdc)
{
struct ceph_osd_request *req, *tmp;
- dout("send_queued\n");
- mutex_lock(&osdc->request_mutex);
- list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) {
+ dout("__send_queued\n");
+ list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item)
__send_request(osdc, req);
+}
+
+/*
+ * Caller should hold map_sem for read and request_mutex.
+ */
+static int __ceph_osdc_start_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req,
+ bool nofail)
+{
+ int rc;
+
+ __register_request(osdc, req);
+ req->r_sent = 0;
+ req->r_got_reply = 0;
+ rc = __map_request(osdc, req, 0);
+ if (rc < 0) {
+ if (nofail) {
+ dout("osdc_start_request failed map, "
+ " will retry %lld\n", req->r_tid);
+ rc = 0;
+ } else {
+ __unregister_request(osdc, req);
+ }
+ return rc;
}
- mutex_unlock(&osdc->request_mutex);
+
+ if (req->r_osd == NULL) {
+ dout("send_request %p no up osds in pg\n", req);
+ ceph_monc_request_next_osdmap(&osdc->client->monc);
+ } else {
+ __send_queued(osdc);
+ }
+
+ return 0;
}
/*
@@ -1071,12 +1500,10 @@ static void handle_timeout(struct work_struct *work)
{
struct ceph_osd_client *osdc =
container_of(work, struct ceph_osd_client, timeout_work.work);
- struct ceph_osd_request *req, *last_req = NULL;
+ struct ceph_osd_request *req;
struct ceph_osd *osd;
- unsigned long timeout = osdc->client->options->osd_timeout * HZ;
unsigned long keepalive =
osdc->client->options->osd_keepalive_timeout * HZ;
- unsigned long last_stamp = 0;
struct list_head slow_osds;
dout("timeout\n");
down_read(&osdc->map_sem);
@@ -1086,37 +1513,6 @@ static void handle_timeout(struct work_struct *work)
mutex_lock(&osdc->request_mutex);
/*
- * reset osds that appear to be _really_ unresponsive. this
- * is a failsafe measure.. we really shouldn't be getting to
- * this point if the system is working properly. the monitors
- * should mark the osd as failed and we should find out about
- * it from an updated osd map.
- */
- while (timeout && !list_empty(&osdc->req_lru)) {
- req = list_entry(osdc->req_lru.next, struct ceph_osd_request,
- r_req_lru_item);
-
- /* hasn't been long enough since we sent it? */
- if (time_before(jiffies, req->r_stamp + timeout))
- break;
-
- /* hasn't been long enough since it was acked? */
- if (req->r_request->ack_stamp == 0 ||
- time_before(jiffies, req->r_request->ack_stamp + timeout))
- break;
-
- BUG_ON(req == last_req && req->r_stamp == last_stamp);
- last_req = req;
- last_stamp = req->r_stamp;
-
- osd = req->r_osd;
- BUG_ON(!osd);
- pr_warning(" tid %llu timed out on osd%d, will reset osd\n",
- req->r_tid, osd->o_osd);
- __kick_osd_requests(osdc, osd);
- }
-
- /*
* ping osds that are a bit slow. this ensures that if there
* is a break in the TCP connection we will notice, and reopen
* a connection with that osd (from the fault callback).
@@ -1140,8 +1536,8 @@ static void handle_timeout(struct work_struct *work)
}
__schedule_osd_timeout(osdc);
+ __send_queued(osdc);
mutex_unlock(&osdc->request_mutex);
- send_queued(osdc);
up_read(&osdc->map_sem);
}
@@ -1162,10 +1558,111 @@ static void handle_osds_timeout(struct work_struct *work)
round_jiffies_relative(delay));
}
+static int ceph_oloc_decode(void **p, void *end,
+ struct ceph_object_locator *oloc)
+{
+ u8 struct_v, struct_cv;
+ u32 len;
+ void *struct_end;
+ int ret = 0;
+
+ ceph_decode_need(p, end, 1 + 1 + 4, e_inval);
+ struct_v = ceph_decode_8(p);
+ struct_cv = ceph_decode_8(p);
+ if (struct_v < 3) {
+ pr_warn("got v %d < 3 cv %d of ceph_object_locator\n",
+ struct_v, struct_cv);
+ goto e_inval;
+ }
+ if (struct_cv > 6) {
+ pr_warn("got v %d cv %d > 6 of ceph_object_locator\n",
+ struct_v, struct_cv);
+ goto e_inval;
+ }
+ len = ceph_decode_32(p);
+ ceph_decode_need(p, end, len, e_inval);
+ struct_end = *p + len;
+
+ oloc->pool = ceph_decode_64(p);
+ *p += 4; /* skip preferred */
+
+ len = ceph_decode_32(p);
+ if (len > 0) {
+ pr_warn("ceph_object_locator::key is set\n");
+ goto e_inval;
+ }
+
+ if (struct_v >= 5) {
+ len = ceph_decode_32(p);
+ if (len > 0) {
+ pr_warn("ceph_object_locator::nspace is set\n");
+ goto e_inval;
+ }
+ }
+
+ if (struct_v >= 6) {
+ s64 hash = ceph_decode_64(p);
+ if (hash != -1) {
+ pr_warn("ceph_object_locator::hash is set\n");
+ goto e_inval;
+ }
+ }
+
+ /* skip the rest */
+ *p = struct_end;
+out:
+ return ret;
+
+e_inval:
+ ret = -EINVAL;
+ goto out;
+}
+
+static int ceph_redirect_decode(void **p, void *end,
+ struct ceph_request_redirect *redir)
+{
+ u8 struct_v, struct_cv;
+ u32 len;
+ void *struct_end;
+ int ret;
+
+ ceph_decode_need(p, end, 1 + 1 + 4, e_inval);
+ struct_v = ceph_decode_8(p);
+ struct_cv = ceph_decode_8(p);
+ if (struct_cv > 1) {
+ pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n",
+ struct_v, struct_cv);
+ goto e_inval;
+ }
+ len = ceph_decode_32(p);
+ ceph_decode_need(p, end, len, e_inval);
+ struct_end = *p + len;
+
+ ret = ceph_oloc_decode(p, end, &redir->oloc);
+ if (ret)
+ goto out;
+
+ len = ceph_decode_32(p);
+ if (len > 0) {
+ pr_warn("ceph_request_redirect::object_name is set\n");
+ goto e_inval;
+ }
+
+ len = ceph_decode_32(p);
+ *p += len; /* skip osd_instructions */
+
+ /* skip the rest */
+ *p = struct_end;
+out:
+ return ret;
+
+e_inval:
+ ret = -EINVAL;
+ goto out;
+}
+
static void complete_request(struct ceph_osd_request *req)
{
- if (req->r_safe_callback)
- req->r_safe_callback(req, NULL);
complete_all(&req->r_safe_completion); /* fsync waiter */
}
@@ -1176,61 +1673,137 @@ static void complete_request(struct ceph_osd_request *req)
static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
struct ceph_connection *con)
{
- struct ceph_osd_reply_head *rhead = msg->front.iov_base;
+ void *p, *end;
struct ceph_osd_request *req;
+ struct ceph_request_redirect redir;
u64 tid;
- int numops, object_len, flags;
+ int object_len;
+ unsigned int numops;
+ int payload_len, flags;
s32 result;
+ s32 retry_attempt;
+ struct ceph_pg pg;
+ int err;
+ u32 reassert_epoch;
+ u64 reassert_version;
+ u32 osdmap_epoch;
+ int already_completed;
+ u32 bytes;
+ unsigned int i;
tid = le64_to_cpu(msg->hdr.tid);
- if (msg->front.iov_len < sizeof(*rhead))
- goto bad;
- numops = le32_to_cpu(rhead->num_ops);
- object_len = le32_to_cpu(rhead->object_len);
- result = le32_to_cpu(rhead->result);
- if (msg->front.iov_len != sizeof(*rhead) + object_len +
- numops * sizeof(struct ceph_osd_op))
+ dout("handle_reply %p tid %llu\n", msg, tid);
+
+ p = msg->front.iov_base;
+ end = p + msg->front.iov_len;
+
+ ceph_decode_need(&p, end, 4, bad);
+ object_len = ceph_decode_32(&p);
+ ceph_decode_need(&p, end, object_len, bad);
+ p += object_len;
+
+ err = ceph_decode_pgid(&p, end, &pg);
+ if (err)
goto bad;
- dout("handle_reply %p tid %llu result %d\n", msg, tid, (int)result);
+
+ ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad);
+ flags = ceph_decode_64(&p);
+ result = ceph_decode_32(&p);
+ reassert_epoch = ceph_decode_32(&p);
+ reassert_version = ceph_decode_64(&p);
+ osdmap_epoch = ceph_decode_32(&p);
+
/* lookup */
+ down_read(&osdc->map_sem);
mutex_lock(&osdc->request_mutex);
req = __lookup_request(osdc, tid);
if (req == NULL) {
dout("handle_reply tid %llu dne\n", tid);
- mutex_unlock(&osdc->request_mutex);
- return;
+ goto bad_mutex;
}
ceph_osdc_get_request(req);
- flags = le32_to_cpu(rhead->flags);
- /*
- * if this connection filled our message, drop our reference now, to
- * avoid a (safe but slower) revoke later.
- */
- if (req->r_con_filling_msg == con && req->r_reply == msg) {
- dout(" dropping con_filling_msg ref %p\n", con);
- req->r_con_filling_msg = NULL;
- ceph_con_put(con);
+ dout("handle_reply %p tid %llu req %p result %d\n", msg, tid,
+ req, result);
+
+ ceph_decode_need(&p, end, 4, bad_put);
+ numops = ceph_decode_32(&p);
+ if (numops > CEPH_OSD_MAX_OP)
+ goto bad_put;
+ if (numops != req->r_num_ops)
+ goto bad_put;
+ payload_len = 0;
+ ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put);
+ for (i = 0; i < numops; i++) {
+ struct ceph_osd_op *op = p;
+ int len;
+
+ len = le32_to_cpu(op->payload_len);
+ req->r_reply_op_len[i] = len;
+ dout(" op %d has %d bytes\n", i, len);
+ payload_len += len;
+ p += sizeof(*op);
+ }
+ bytes = le32_to_cpu(msg->hdr.data_len);
+ if (payload_len != bytes) {
+ pr_warning("sum of op payload lens %d != data_len %d",
+ payload_len, bytes);
+ goto bad_put;
+ }
+
+ ceph_decode_need(&p, end, 4 + numops * 4, bad_put);
+ retry_attempt = ceph_decode_32(&p);
+ for (i = 0; i < numops; i++)
+ req->r_reply_op_result[i] = ceph_decode_32(&p);
+
+ if (le16_to_cpu(msg->hdr.version) >= 6) {
+ p += 8 + 4; /* skip replay_version */
+ p += 8; /* skip user_version */
+
+ err = ceph_redirect_decode(&p, end, &redir);
+ if (err)
+ goto bad_put;
+ } else {
+ redir.oloc.pool = -1;
}
- if (!req->r_got_reply) {
- unsigned bytes;
+ if (redir.oloc.pool != -1) {
+ dout("redirect pool %lld\n", redir.oloc.pool);
+
+ __unregister_request(osdc, req);
+
+ req->r_target_oloc = redir.oloc; /* struct */
- req->r_result = le32_to_cpu(rhead->result);
- bytes = le32_to_cpu(msg->hdr.data_len);
+ /*
+ * Start redirect requests with nofail=true. If
+ * mapping fails, request will end up on the notarget
+ * list, waiting for the new osdmap (which can take
+ * a while), even though the original request mapped
+ * successfully. In the future we might want to follow
+ * original request's nofail setting here.
+ */
+ err = __ceph_osdc_start_request(osdc, req, true);
+ BUG_ON(err);
+
+ goto out_unlock;
+ }
+
+ already_completed = req->r_got_reply;
+ if (!req->r_got_reply) {
+ req->r_result = result;
dout("handle_reply result %d bytes %d\n", req->r_result,
bytes);
if (req->r_result == 0)
req->r_result = bytes;
/* in case this is a write and we need to replay, */
- req->r_reassert_version = rhead->reassert_version;
+ req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch);
+ req->r_reassert_version.version = cpu_to_le64(reassert_version);
req->r_got_reply = 1;
} else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) {
dout("handle_reply tid %llu dup ack\n", tid);
- mutex_unlock(&osdc->request_mutex);
- goto done;
+ goto out_unlock;
}
dout("handle_reply tid %llu flags %d\n", tid, flags);
@@ -1245,24 +1818,48 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
__unregister_request(osdc, req);
mutex_unlock(&osdc->request_mutex);
+ up_read(&osdc->map_sem);
- if (req->r_callback)
- req->r_callback(req, msg);
- else
- complete_all(&req->r_completion);
+ if (!already_completed) {
+ if (req->r_unsafe_callback &&
+ result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK))
+ req->r_unsafe_callback(req, true);
+ if (req->r_callback)
+ req->r_callback(req, msg);
+ else
+ complete_all(&req->r_completion);
+ }
- if (flags & CEPH_OSD_FLAG_ONDISK)
+ if (flags & CEPH_OSD_FLAG_ONDISK) {
+ if (req->r_unsafe_callback && already_completed)
+ req->r_unsafe_callback(req, false);
complete_request(req);
+ }
-done:
+out:
dout("req=%p req->r_linger=%d\n", req, req->r_linger);
ceph_osdc_put_request(req);
return;
+out_unlock:
+ mutex_unlock(&osdc->request_mutex);
+ up_read(&osdc->map_sem);
+ goto out;
+bad_put:
+ req->r_result = -EIO;
+ __unregister_request(osdc, req);
+ if (req->r_callback)
+ req->r_callback(req, msg);
+ else
+ complete_all(&req->r_completion);
+ complete_request(req);
+ ceph_osdc_put_request(req);
+bad_mutex:
+ mutex_unlock(&osdc->request_mutex);
+ up_read(&osdc->map_sem);
bad:
- pr_err("corrupt osd_op_reply got %d %d expected %d\n",
- (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len),
- (int)sizeof(*rhead));
+ pr_err("corrupt osd_op_reply got %d %d\n",
+ (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len));
ceph_msg_dump(msg);
}
@@ -1287,30 +1884,59 @@ static void reset_changed_osds(struct ceph_osd_client *osdc)
* Requeue requests whose mapping to an OSD has changed. If requests map to
* no osd, request a new map.
*
- * Caller should hold map_sem for read and request_mutex.
+ * Caller should hold map_sem for read.
*/
-static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
+static void kick_requests(struct ceph_osd_client *osdc, bool force_resend,
+ bool force_resend_writes)
{
struct ceph_osd_request *req, *nreq;
struct rb_node *p;
int needmap = 0;
int err;
+ bool force_resend_req;
- dout("kick_requests %s\n", force_resend ? " (force resend)" : "");
+ dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "",
+ force_resend_writes ? " (force resend writes)" : "");
mutex_lock(&osdc->request_mutex);
- for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
+ for (p = rb_first(&osdc->requests); p; ) {
req = rb_entry(p, struct ceph_osd_request, r_node);
- err = __map_request(osdc, req, force_resend);
+ p = rb_next(p);
+
+ /*
+ * For linger requests that have not yet been
+ * registered, move them to the linger list; they'll
+ * be sent to the osd in the loop below. Unregister
+ * the request before re-registering it as a linger
+ * request to ensure the __map_request() below
+ * will decide it needs to be sent.
+ */
+ if (req->r_linger && list_empty(&req->r_linger_item)) {
+ dout("%p tid %llu restart on osd%d\n",
+ req, req->r_tid,
+ req->r_osd ? req->r_osd->o_osd : -1);
+ ceph_osdc_get_request(req);
+ __unregister_request(osdc, req);
+ __register_linger_request(osdc, req);
+ ceph_osdc_put_request(req);
+ continue;
+ }
+
+ force_resend_req = force_resend ||
+ (force_resend_writes &&
+ req->r_flags & CEPH_OSD_FLAG_WRITE);
+ err = __map_request(osdc, req, force_resend_req);
if (err < 0)
continue; /* error */
if (req->r_osd == NULL) {
dout("%p tid %llu maps to no osd\n", req, req->r_tid);
needmap++; /* request a newer map */
} else if (err > 0) {
- dout("%p tid %llu requeued on osd%d\n", req, req->r_tid,
- req->r_osd ? req->r_osd->o_osd : -1);
- if (!req->r_linger)
+ if (!req->r_linger) {
+ dout("%p tid %llu requeued on osd%d\n", req,
+ req->r_tid,
+ req->r_osd ? req->r_osd->o_osd : -1);
req->r_flags |= CEPH_OSD_FLAG_RETRY;
+ }
}
}
@@ -1318,7 +1944,9 @@ static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
r_linger_item) {
dout("linger req=%p req->r_osd=%p\n", req, req->r_osd);
- err = __map_request(osdc, req, force_resend);
+ err = __map_request(osdc, req,
+ force_resend || force_resend_writes);
+ dout("__map_request returned %d\n", err);
if (err == 0)
continue; /* no change and no osd was specified */
if (err < 0)
@@ -1331,9 +1959,10 @@ static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid,
req->r_osd ? req->r_osd->o_osd : -1);
- __unregister_linger_request(osdc, req);
__register_request(osdc, req);
+ __unregister_linger_request(osdc, req);
}
+ reset_changed_osds(osdc);
mutex_unlock(&osdc->request_mutex);
if (needmap) {
@@ -1358,6 +1987,7 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
struct ceph_osdmap *newmap = NULL, *oldmap;
int err;
struct ceph_fsid fsid;
+ bool was_full;
dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0);
p = msg->front.iov_base;
@@ -1371,6 +2001,8 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
down_write(&osdc->map_sem);
+ was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL);
+
/* incremental maps */
ceph_decode_32_safe(&p, end, nr_maps, bad);
dout(" %d inc maps\n", nr_maps);
@@ -1385,7 +2017,7 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
epoch, maplen);
newmap = osdmap_apply_incremental(&p, next,
osdc->osdmap,
- osdc->client->msgr);
+ &osdc->client->msgr);
if (IS_ERR(newmap)) {
err = PTR_ERR(newmap);
goto bad;
@@ -1395,8 +2027,10 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
ceph_osdmap_destroy(osdc->osdmap);
osdc->osdmap = newmap;
}
- kick_requests(osdc, 0);
- reset_changed_osds(osdc);
+ was_full = was_full ||
+ ceph_osdmap_flag(osdc->osdmap,
+ CEPH_OSDMAP_FULL);
+ kick_requests(osdc, 0, was_full);
} else {
dout("ignoring incremental map %u len %d\n",
epoch, maplen);
@@ -1426,7 +2060,7 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
int skipped_map = 0;
dout("taking full map %u len %d\n", epoch, maplen);
- newmap = osdmap_decode(&p, p+maplen);
+ newmap = ceph_osdmap_decode(&p, p+maplen);
if (IS_ERR(newmap)) {
err = PTR_ERR(newmap);
goto bad;
@@ -1439,12 +2073,17 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
skipped_map = 1;
ceph_osdmap_destroy(oldmap);
}
- kick_requests(osdc, skipped_map);
+ was_full = was_full ||
+ ceph_osdmap_flag(osdc->osdmap,
+ CEPH_OSDMAP_FULL);
+ kick_requests(osdc, skipped_map, was_full);
}
p += maplen;
nr_maps--;
}
+ if (!osdc->osdmap)
+ goto bad;
done:
downgrade_write(&osdc->map_sem);
ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch);
@@ -1454,10 +2093,14 @@ done:
* we find out when we are no longer full and stop returning
* ENOSPC.
*/
- if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL))
+ if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) ||
+ ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) ||
+ ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR))
ceph_monc_request_next_osdmap(&osdc->client->monc);
- send_queued(osdc);
+ mutex_lock(&osdc->request_mutex);
+ __send_queued(osdc);
+ mutex_unlock(&osdc->request_mutex);
up_read(&osdc->map_sem);
wake_up_all(&osdc->client->auth_wq);
return;
@@ -1466,7 +2109,6 @@ bad:
pr_err("osdc handle_map corrupt msg\n");
ceph_msg_dump(msg);
up_write(&osdc->map_sem);
- return;
}
/*
@@ -1551,8 +2193,7 @@ static void __remove_event(struct ceph_osd_event *event)
int ceph_osdc_create_event(struct ceph_osd_client *osdc,
void (*event_cb)(u64, u64, u8, void *),
- int one_shot, void *data,
- struct ceph_osd_event **pevent)
+ void *data, struct ceph_osd_event **pevent)
{
struct ceph_osd_event *event;
@@ -1562,13 +2203,13 @@ int ceph_osdc_create_event(struct ceph_osd_client *osdc,
dout("create_event %p\n", event);
event->cb = event_cb;
- event->one_shot = one_shot;
+ event->one_shot = 0;
event->data = data;
event->osdc = osdc;
INIT_LIST_HEAD(&event->osd_node);
+ RB_CLEAR_NODE(&event->node);
kref_init(&event->kref); /* one ref for us */
kref_get(&event->kref); /* one ref for the caller */
- init_completion(&event->completion);
spin_lock(&osdc->event_lock);
event->cookie = ++osdc->event_count;
@@ -1604,7 +2245,6 @@ static void do_event_work(struct work_struct *work)
dout("do_event_work completing %p\n", event);
event->cb(ver, notify_id, opcode, event->data);
- complete(&event->completion);
dout("do_event_work completed %p\n", event);
ceph_osdc_put_event(event);
kfree(event_work);
@@ -1614,7 +2254,8 @@ static void do_event_work(struct work_struct *work)
/*
* Process osd watch notifications
*/
-void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg)
+static void handle_watch_notify(struct ceph_osd_client *osdc,
+ struct ceph_msg *msg)
{
void *p, *end;
u8 proto_ver;
@@ -1635,9 +2276,8 @@ void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg)
spin_lock(&osdc->event_lock);
event = __find_event(osdc, cookie);
if (event) {
+ BUG_ON(event->one_shot);
get_event(event);
- if (event->one_shot)
- __remove_event(event);
}
spin_unlock(&osdc->event_lock);
dout("handle_watch_notify cookie %lld ver %lld event %p\n",
@@ -1662,29 +2302,111 @@ void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg)
return;
done_err:
- complete(&event->completion);
ceph_osdc_put_event(event);
return;
bad:
pr_err("osdc handle_watch_notify corrupt msg\n");
- return;
}
-int ceph_osdc_wait_event(struct ceph_osd_event *event, unsigned long timeout)
+/*
+ * build new request AND message
+ *
+ */
+void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off,
+ struct ceph_snap_context *snapc, u64 snap_id,
+ struct timespec *mtime)
{
- int err;
+ struct ceph_msg *msg = req->r_request;
+ void *p;
+ size_t msg_size;
+ int flags = req->r_flags;
+ u64 data_len;
+ unsigned int i;
- dout("wait_event %p\n", event);
- err = wait_for_completion_interruptible_timeout(&event->completion,
- timeout * HZ);
- ceph_osdc_put_event(event);
- if (err > 0)
- err = 0;
- dout("wait_event %p returns %d\n", event, err);
- return err;
+ req->r_snapid = snap_id;
+ req->r_snapc = ceph_get_snap_context(snapc);
+
+ /* encode request */
+ msg->hdr.version = cpu_to_le16(4);
+
+ p = msg->front.iov_base;
+ ceph_encode_32(&p, 1); /* client_inc is always 1 */
+ req->r_request_osdmap_epoch = p;
+ p += 4;
+ req->r_request_flags = p;
+ p += 4;
+ if (req->r_flags & CEPH_OSD_FLAG_WRITE)
+ ceph_encode_timespec(p, mtime);
+ p += sizeof(struct ceph_timespec);
+ req->r_request_reassert_version = p;
+ p += sizeof(struct ceph_eversion); /* will get filled in */
+
+ /* oloc */
+ ceph_encode_8(&p, 4);
+ ceph_encode_8(&p, 4);
+ ceph_encode_32(&p, 8 + 4 + 4);
+ req->r_request_pool = p;
+ p += 8;
+ ceph_encode_32(&p, -1); /* preferred */
+ ceph_encode_32(&p, 0); /* key len */
+
+ ceph_encode_8(&p, 1);
+ req->r_request_pgid = p;
+ p += 8 + 4;
+ ceph_encode_32(&p, -1); /* preferred */
+
+ /* oid */
+ ceph_encode_32(&p, req->r_base_oid.name_len);
+ memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len);
+ dout("oid '%.*s' len %d\n", req->r_base_oid.name_len,
+ req->r_base_oid.name, req->r_base_oid.name_len);
+ p += req->r_base_oid.name_len;
+
+ /* ops--can imply data */
+ ceph_encode_16(&p, (u16)req->r_num_ops);
+ data_len = 0;
+ for (i = 0; i < req->r_num_ops; i++) {
+ data_len += osd_req_encode_op(req, p, i);
+ p += sizeof(struct ceph_osd_op);
+ }
+
+ /* snaps */
+ ceph_encode_64(&p, req->r_snapid);
+ ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0);
+ ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0);
+ if (req->r_snapc) {
+ for (i = 0; i < snapc->num_snaps; i++) {
+ ceph_encode_64(&p, req->r_snapc->snaps[i]);
+ }
+ }
+
+ req->r_request_attempts = p;
+ p += 4;
+
+ /* data */
+ if (flags & CEPH_OSD_FLAG_WRITE) {
+ u16 data_off;
+
+ /*
+ * The header "data_off" is a hint to the receiver
+ * allowing it to align received data into its
+ * buffers such that there's no need to re-copy
+ * it before writing it to disk (direct I/O).
+ */
+ data_off = (u16) (off & 0xffff);
+ req->r_request->hdr.data_off = cpu_to_le16(data_off);
+ }
+ req->r_request->hdr.data_len = cpu_to_le32(data_len);
+
+ BUG_ON(p > msg->front.iov_base + msg->front.iov_len);
+ msg_size = p - msg->front.iov_base;
+ msg->front.iov_len = msg_size;
+ msg->hdr.front_len = cpu_to_le32(msg_size);
+
+ dout("build_request msg_size was %d\n", (int)msg_size);
}
-EXPORT_SYMBOL(ceph_osdc_wait_event);
+EXPORT_SYMBOL(ceph_osdc_build_request);
/*
* Register request, send initial attempt.
@@ -1693,46 +2415,16 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req,
bool nofail)
{
- int rc = 0;
-
- req->r_request->pages = req->r_pages;
- req->r_request->nr_pages = req->r_num_pages;
-#ifdef CONFIG_BLOCK
- req->r_request->bio = req->r_bio;
-#endif
- req->r_request->trail = req->r_trail;
-
- register_request(osdc, req);
+ int rc;
down_read(&osdc->map_sem);
mutex_lock(&osdc->request_mutex);
- /*
- * a racing kick_requests() may have sent the message for us
- * while we dropped request_mutex above, so only send now if
- * the request still han't been touched yet.
- */
- if (req->r_sent == 0) {
- rc = __map_request(osdc, req, 0);
- if (rc < 0) {
- if (nofail) {
- dout("osdc_start_request failed map, "
- " will retry %lld\n", req->r_tid);
- rc = 0;
- }
- goto out_unlock;
- }
- if (req->r_osd == NULL) {
- dout("send_request %p no up osds in pg\n", req);
- ceph_monc_request_next_osdmap(&osdc->client->monc);
- } else {
- __send_request(osdc, req);
- }
- rc = 0;
- }
-out_unlock:
+ rc = __ceph_osdc_start_request(osdc, req, nofail);
+
mutex_unlock(&osdc->request_mutex);
up_read(&osdc->map_sem);
+
return rc;
}
EXPORT_SYMBOL(ceph_osdc_start_request);
@@ -1796,6 +2488,17 @@ void ceph_osdc_sync(struct ceph_osd_client *osdc)
EXPORT_SYMBOL(ceph_osdc_sync);
/*
+ * Call all pending notify callbacks - for use after a watch is
+ * unregistered, to make sure no more callbacks for it will be invoked
+ */
+void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc)
+{
+ flush_workqueue(osdc->notify_wq);
+}
+EXPORT_SYMBOL(ceph_osdc_flush_notifies);
+
+
+/*
* init, shutdown
*/
int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
@@ -1833,24 +2536,26 @@ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
if (!osdc->req_mempool)
goto out;
- err = ceph_msgpool_init(&osdc->msgpool_op, OSD_OP_FRONT_LEN, 10, true,
+ err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP,
+ OSD_OP_FRONT_LEN, 10, true,
"osd_op");
if (err < 0)
goto out_mempool;
- err = ceph_msgpool_init(&osdc->msgpool_op_reply,
+ err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY,
OSD_OPREPLY_FRONT_LEN, 10, true,
"osd_op_reply");
if (err < 0)
goto out_msgpool;
+ err = -ENOMEM;
osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify");
- if (IS_ERR(osdc->notify_wq)) {
- err = PTR_ERR(osdc->notify_wq);
- osdc->notify_wq = NULL;
- goto out_msgpool;
- }
+ if (!osdc->notify_wq)
+ goto out_msgpool_reply;
+
return 0;
+out_msgpool_reply:
+ ceph_msgpool_destroy(&osdc->msgpool_op_reply);
out_msgpool:
ceph_msgpool_destroy(&osdc->msgpool_op);
out_mempool:
@@ -1858,7 +2563,6 @@ out_mempool:
out:
return err;
}
-EXPORT_SYMBOL(ceph_osdc_init);
void ceph_osdc_stop(struct ceph_osd_client *osdc)
{
@@ -1875,7 +2579,6 @@ void ceph_osdc_stop(struct ceph_osd_client *osdc)
ceph_msgpool_destroy(&osdc->msgpool_op);
ceph_msgpool_destroy(&osdc->msgpool_op_reply);
}
-EXPORT_SYMBOL(ceph_osdc_stop);
/*
* Read some contiguous pages. If we cross a stripe boundary, shorten
@@ -1892,18 +2595,22 @@ int ceph_osdc_readpages(struct ceph_osd_client *osdc,
dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino,
vino.snap, off, *plen);
- req = ceph_osdc_new_request(osdc, layout, vino, off, plen,
+ req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1,
CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ,
- NULL, 0, truncate_seq, truncate_size, NULL,
- false, 1, page_align);
- if (!req)
- return -ENOMEM;
+ NULL, truncate_seq, truncate_size,
+ false);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
/* it may be a short read due to an object boundary */
- req->r_pages = pages;
- dout("readpages final extent is %llu~%llu (%d pages align %d)\n",
- off, *plen, req->r_num_pages, page_align);
+ osd_req_op_extent_osd_data_pages(req, 0,
+ pages, *plen, page_align, false, false);
+
+ dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n",
+ off, *plen, *plen, page_align);
+
+ ceph_osdc_build_request(req, off, NULL, vino.snap, NULL);
rc = ceph_osdc_start_request(osdc, req, false);
if (!rc)
@@ -1924,30 +2631,29 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
u64 off, u64 len,
u32 truncate_seq, u64 truncate_size,
struct timespec *mtime,
- struct page **pages, int num_pages,
- int flags, int do_sync, bool nofail)
+ struct page **pages, int num_pages)
{
struct ceph_osd_request *req;
int rc = 0;
int page_align = off & ~PAGE_MASK;
- BUG_ON(vino.snap != CEPH_NOSNAP);
- req = ceph_osdc_new_request(osdc, layout, vino, off, &len,
+ BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */
+ req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1,
CEPH_OSD_OP_WRITE,
- flags | CEPH_OSD_FLAG_ONDISK |
- CEPH_OSD_FLAG_WRITE,
- snapc, do_sync,
- truncate_seq, truncate_size, mtime,
- nofail, 1, page_align);
- if (!req)
- return -ENOMEM;
+ CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE,
+ snapc, truncate_seq, truncate_size,
+ true);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
/* it may be a short write due to an object boundary */
- req->r_pages = pages;
- dout("writepages %llu~%llu (%d pages)\n", off, len,
- req->r_num_pages);
+ osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align,
+ false, false);
+ dout("writepages %llu~%llu (%llu bytes)\n", off, len, len);
- rc = ceph_osdc_start_request(osdc, req, nofail);
+ ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime);
+
+ rc = ceph_osdc_start_request(osdc, req, true);
if (!rc)
rc = ceph_osdc_wait_request(osdc, req);
@@ -1959,6 +2665,26 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino,
}
EXPORT_SYMBOL(ceph_osdc_writepages);
+int ceph_osdc_setup(void)
+{
+ BUG_ON(ceph_osd_request_cache);
+ ceph_osd_request_cache = kmem_cache_create("ceph_osd_request",
+ sizeof (struct ceph_osd_request),
+ __alignof__(struct ceph_osd_request),
+ 0, NULL);
+
+ return ceph_osd_request_cache ? 0 : -ENOMEM;
+}
+EXPORT_SYMBOL(ceph_osdc_setup);
+
+void ceph_osdc_cleanup(void)
+{
+ BUG_ON(!ceph_osd_request_cache);
+ kmem_cache_destroy(ceph_osd_request_cache);
+ ceph_osd_request_cache = NULL;
+}
+EXPORT_SYMBOL(ceph_osdc_cleanup);
+
/*
* handle incoming message
*/
@@ -2003,7 +2729,7 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
struct ceph_osd_client *osdc = osd->o_osdc;
struct ceph_msg *m;
struct ceph_osd_request *req;
- int front = le32_to_cpu(hdr->front_len);
+ int front_len = le32_to_cpu(hdr->front_len);
int data_len = le32_to_cpu(hdr->data_len);
u64 tid;
@@ -2013,23 +2739,23 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
if (!req) {
*skip = 1;
m = NULL;
- pr_info("get_reply unknown tid %llu from osd%d\n", tid,
- osd->o_osd);
+ dout("get_reply unknown tid %llu from osd%d\n", tid,
+ osd->o_osd);
goto out;
}
- if (req->r_con_filling_msg) {
- dout("get_reply revoking msg %p from old con %p\n",
- req->r_reply, req->r_con_filling_msg);
- ceph_con_revoke_message(req->r_con_filling_msg, req->r_reply);
- ceph_con_put(req->r_con_filling_msg);
- req->r_con_filling_msg = NULL;
- }
+ if (req->r_reply->con)
+ dout("%s revoking msg %p from old con %p\n", __func__,
+ req->r_reply, req->r_reply->con);
+ ceph_msg_revoke_incoming(req->r_reply);
- if (front > req->r_reply->front.iov_len) {
- pr_warning("get_reply front %d > preallocated %d\n",
- front, (int)req->r_reply->front.iov_len);
- m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front, GFP_NOFS, false);
+ if (front_len > req->r_reply->front_alloc_len) {
+ pr_warning("get_reply front %d > preallocated %d (%u#%llu)\n",
+ front_len, req->r_reply->front_alloc_len,
+ (unsigned int)con->peer_name.type,
+ le64_to_cpu(con->peer_name.num));
+ m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS,
+ false);
if (!m)
goto out;
ceph_msg_put(req->r_reply);
@@ -2038,26 +2764,29 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
m = ceph_msg_get(req->r_reply);
if (data_len > 0) {
- int want = calc_pages_for(req->r_page_alignment, data_len);
-
- if (unlikely(req->r_num_pages < want)) {
- pr_warning("tid %lld reply has %d bytes %d pages, we"
- " had only %d pages ready\n", tid, data_len,
- want, req->r_num_pages);
- *skip = 1;
- ceph_msg_put(m);
- m = NULL;
- goto out;
+ struct ceph_osd_data *osd_data;
+
+ /*
+ * XXX This is assuming there is only one op containing
+ * XXX page data. Probably OK for reads, but this
+ * XXX ought to be done more generally.
+ */
+ osd_data = osd_req_op_extent_osd_data(req, 0);
+ if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
+ if (osd_data->pages &&
+ unlikely(osd_data->length < data_len)) {
+
+ pr_warning("tid %lld reply has %d bytes "
+ "we had only %llu bytes ready\n",
+ tid, data_len, osd_data->length);
+ *skip = 1;
+ ceph_msg_put(m);
+ m = NULL;
+ goto out;
+ }
}
- m->pages = req->r_pages;
- m->nr_pages = req->r_num_pages;
- m->page_alignment = req->r_page_alignment;
-#ifdef CONFIG_BLOCK
- m->bio = req->r_bio;
-#endif
}
*skip = 0;
- req->r_con_filling_msg = ceph_con_get(con);
dout("get_reply tid %lld %p\n", tid, m);
out:
@@ -2074,6 +2803,7 @@ static struct ceph_msg *alloc_msg(struct ceph_connection *con,
int type = le16_to_cpu(hdr->type);
int front = le32_to_cpu(hdr->front_len);
+ *skip = 0;
switch (type) {
case CEPH_MSG_OSD_MAP:
case CEPH_MSG_WATCH_NOTIFY:
@@ -2108,37 +2838,36 @@ static void put_osd_con(struct ceph_connection *con)
/*
* authentication
*/
-static int get_authorizer(struct ceph_connection *con,
- void **buf, int *len, int *proto,
- void **reply_buf, int *reply_len, int force_new)
+/*
+ * Note: returned pointer is the address of a structure that's
+ * managed separately. Caller must *not* attempt to free it.
+ */
+static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
+ int *proto, int force_new)
{
struct ceph_osd *o = con->private;
struct ceph_osd_client *osdc = o->o_osdc;
struct ceph_auth_client *ac = osdc->client->monc.auth;
- int ret = 0;
+ struct ceph_auth_handshake *auth = &o->o_auth;
- if (force_new && o->o_authorizer) {
- ac->ops->destroy_authorizer(ac, o->o_authorizer);
- o->o_authorizer = NULL;
- }
- if (o->o_authorizer == NULL) {
- ret = ac->ops->create_authorizer(
- ac, CEPH_ENTITY_TYPE_OSD,
- &o->o_authorizer,
- &o->o_authorizer_buf,
- &o->o_authorizer_buf_len,
- &o->o_authorizer_reply_buf,
- &o->o_authorizer_reply_buf_len);
+ if (force_new && auth->authorizer) {
+ ceph_auth_destroy_authorizer(ac, auth->authorizer);
+ auth->authorizer = NULL;
+ }
+ if (!auth->authorizer) {
+ int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
+ auth);
+ if (ret)
+ return ERR_PTR(ret);
+ } else {
+ int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD,
+ auth);
if (ret)
- return ret;
+ return ERR_PTR(ret);
}
-
*proto = ac->protocol;
- *buf = o->o_authorizer_buf;
- *len = o->o_authorizer_buf_len;
- *reply_buf = o->o_authorizer_reply_buf;
- *reply_len = o->o_authorizer_reply_buf_len;
- return 0;
+
+ return auth;
}
@@ -2148,7 +2877,7 @@ static int verify_authorizer_reply(struct ceph_connection *con, int len)
struct ceph_osd_client *osdc = o->o_osdc;
struct ceph_auth_client *ac = osdc->client->monc.auth;
- return ac->ops->verify_authorizer_reply(ac, o->o_authorizer, len);
+ return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len);
}
static int invalidate_authorizer(struct ceph_connection *con)
@@ -2157,9 +2886,7 @@ static int invalidate_authorizer(struct ceph_connection *con)
struct ceph_osd_client *osdc = o->o_osdc;
struct ceph_auth_client *ac = osdc->client->monc.auth;
- if (ac->ops->invalidate_authorizer)
- ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD);
-
+ ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD);
return ceph_monc_validate_auth(&osdc->client->monc);
}
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index fd863fe7693..c547e46084d 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -13,32 +13,24 @@
char *ceph_osdmap_state_str(char *str, int len, int state)
{
- int flag = 0;
-
if (!len)
- goto done;
-
- *str = '\0';
- if (state) {
- if (state & CEPH_OSD_EXISTS) {
- snprintf(str, len, "exists");
- flag = 1;
- }
- if (state & CEPH_OSD_UP) {
- snprintf(str, len, "%s%s%s", str, (flag ? ", " : ""),
- "up");
- flag = 1;
- }
- } else {
+ return str;
+
+ if ((state & CEPH_OSD_EXISTS) && (state & CEPH_OSD_UP))
+ snprintf(str, len, "exists, up");
+ else if (state & CEPH_OSD_EXISTS)
+ snprintf(str, len, "exists");
+ else if (state & CEPH_OSD_UP)
+ snprintf(str, len, "up");
+ else
snprintf(str, len, "doesn't exist");
- }
-done:
+
return str;
}
/* maps */
-static int calc_bits_of(unsigned t)
+static int calc_bits_of(unsigned int t)
{
int b = 0;
while (t) {
@@ -53,13 +45,8 @@ static int calc_bits_of(unsigned t)
*/
static void calc_pg_masks(struct ceph_pg_pool_info *pi)
{
- pi->pg_num_mask = (1 << calc_bits_of(le32_to_cpu(pi->v.pg_num)-1)) - 1;
- pi->pgp_num_mask =
- (1 << calc_bits_of(le32_to_cpu(pi->v.pgp_num)-1)) - 1;
- pi->lpg_num_mask =
- (1 << calc_bits_of(le32_to_cpu(pi->v.lpg_num)-1)) - 1;
- pi->lpgp_num_mask =
- (1 << calc_bits_of(le32_to_cpu(pi->v.lpgp_num)-1)) - 1;
+ pi->pg_num_mask = (1 << calc_bits_of(pi->pg_num-1)) - 1;
+ pi->pgp_num_mask = (1 << calc_bits_of(pi->pgp_num-1)) - 1;
}
/*
@@ -135,6 +122,21 @@ bad:
return -EINVAL;
}
+static int skip_name_map(void **p, void *end)
+{
+ int len;
+ ceph_decode_32_safe(p, end, len ,bad);
+ while (len--) {
+ int strlen;
+ *p += sizeof(u32);
+ ceph_decode_32_safe(p, end, strlen, bad);
+ *p += strlen;
+}
+ return 0;
+bad:
+ return -EINVAL;
+}
+
static struct crush_map *crush_decode(void *pbyval, void *end)
{
struct crush_map *c;
@@ -143,6 +145,7 @@ static struct crush_map *crush_decode(void *pbyval, void *end)
void **p = &pbyval;
void *start = pbyval;
u32 magic;
+ u32 num_name_maps;
dout("crush_decode %p to %p len %d\n", *p, end, (int)(end - *p));
@@ -150,24 +153,23 @@ static struct crush_map *crush_decode(void *pbyval, void *end)
if (c == NULL)
return ERR_PTR(-ENOMEM);
+ /* set tunables to default values */
+ c->choose_local_tries = 2;
+ c->choose_local_fallback_tries = 5;
+ c->choose_total_tries = 19;
+ c->chooseleaf_descend_once = 0;
+
ceph_decode_need(p, end, 4*sizeof(u32), bad);
magic = ceph_decode_32(p);
if (magic != CRUSH_MAGIC) {
pr_err("crush_decode magic %x != current %x\n",
- (unsigned)magic, (unsigned)CRUSH_MAGIC);
+ (unsigned int)magic, (unsigned int)CRUSH_MAGIC);
goto bad;
}
c->max_buckets = ceph_decode_32(p);
c->max_rules = ceph_decode_32(p);
c->max_devices = ceph_decode_32(p);
- c->device_parents = kcalloc(c->max_devices, sizeof(u32), GFP_NOFS);
- if (c->device_parents == NULL)
- goto badmem;
- c->bucket_parents = kcalloc(c->max_buckets, sizeof(u32), GFP_NOFS);
- if (c->bucket_parents == NULL)
- goto badmem;
-
c->buckets = kcalloc(c->max_buckets, sizeof(*c->buckets), GFP_NOFS);
if (c->buckets == NULL)
goto badmem;
@@ -283,7 +285,8 @@ static struct crush_map *crush_decode(void *pbyval, void *end)
ceph_decode_32_safe(p, end, yes, bad);
#if BITS_PER_LONG == 32
err = -EINVAL;
- if (yes > ULONG_MAX / sizeof(struct crush_rule_step))
+ if (yes > (ULONG_MAX - sizeof(*r))
+ / sizeof(struct crush_rule_step))
goto bad;
#endif
r = c->rules[i] = kmalloc(sizeof(*r) +
@@ -303,7 +306,35 @@ static struct crush_map *crush_decode(void *pbyval, void *end)
}
/* ignore trailing name maps. */
+ for (num_name_maps = 0; num_name_maps < 3; num_name_maps++) {
+ err = skip_name_map(p, end);
+ if (err < 0)
+ goto done;
+ }
+
+ /* tunables */
+ ceph_decode_need(p, end, 3*sizeof(u32), done);
+ c->choose_local_tries = ceph_decode_32(p);
+ c->choose_local_fallback_tries = ceph_decode_32(p);
+ c->choose_total_tries = ceph_decode_32(p);
+ dout("crush decode tunable choose_local_tries = %d",
+ c->choose_local_tries);
+ dout("crush decode tunable choose_local_fallback_tries = %d",
+ c->choose_local_fallback_tries);
+ dout("crush decode tunable choose_total_tries = %d",
+ c->choose_total_tries);
+
+ ceph_decode_need(p, end, sizeof(u32), done);
+ c->chooseleaf_descend_once = ceph_decode_32(p);
+ dout("crush decode tunable chooseleaf_descend_once = %d",
+ c->chooseleaf_descend_once);
+
+ ceph_decode_need(p, end, sizeof(u8), done);
+ c->chooseleaf_vary_r = ceph_decode_8(p);
+ dout("crush decode tunable chooseleaf_vary_r = %d",
+ c->chooseleaf_vary_r);
+done:
dout("crush_decode success\n");
return c;
@@ -317,16 +348,17 @@ bad:
/*
* rbtree of pg_mapping for handling pg_temp (explicit mapping of pgid
- * to a set of osds)
+ * to a set of osds) and primary_temp (explicit primary setting)
*/
static int pgid_cmp(struct ceph_pg l, struct ceph_pg r)
{
- u64 a = *(u64 *)&l;
- u64 b = *(u64 *)&r;
-
- if (a < b)
+ if (l.pool < r.pool)
return -1;
- if (a > b)
+ if (l.pool > r.pool)
+ return 1;
+ if (l.seed < r.seed)
+ return -1;
+ if (l.seed > r.seed)
return 1;
return 0;
}
@@ -372,8 +404,8 @@ static struct ceph_pg_mapping *__lookup_pg_mapping(struct rb_root *root,
} else if (c > 0) {
n = n->rb_right;
} else {
- dout("__lookup_pg_mapping %llx got %p\n",
- *(u64 *)&pgid, pg);
+ dout("__lookup_pg_mapping %lld.%x got %p\n",
+ pgid.pool, pgid.seed, pg);
return pg;
}
}
@@ -385,12 +417,13 @@ static int __remove_pg_mapping(struct rb_root *root, struct ceph_pg pgid)
struct ceph_pg_mapping *pg = __lookup_pg_mapping(root, pgid);
if (pg) {
- dout("__remove_pg_mapping %llx %p\n", *(u64 *)&pgid, pg);
+ dout("__remove_pg_mapping %lld.%x %p\n", pgid.pool, pgid.seed,
+ pg);
rb_erase(&pg->node, root);
kfree(pg);
return 0;
}
- dout("__remove_pg_mapping %llx dne\n", *(u64 *)&pgid);
+ dout("__remove_pg_mapping %lld.%x dne\n", pgid.pool, pgid.seed);
return -ENOENT;
}
@@ -419,7 +452,7 @@ static int __insert_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *new)
return 0;
}
-static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, int id)
+static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, u64 id)
{
struct ceph_pg_pool_info *pi;
struct rb_node *n = root->rb_node;
@@ -436,6 +469,27 @@ static struct ceph_pg_pool_info *__lookup_pg_pool(struct rb_root *root, int id)
return NULL;
}
+struct ceph_pg_pool_info *ceph_pg_pool_by_id(struct ceph_osdmap *map, u64 id)
+{
+ return __lookup_pg_pool(&map->pg_pools, id);
+}
+
+const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id)
+{
+ struct ceph_pg_pool_info *pi;
+
+ if (id == CEPH_NOPOOL)
+ return NULL;
+
+ if (WARN_ON_ONCE(id > (u64) INT_MAX))
+ return NULL;
+
+ pi = __lookup_pg_pool(&map->pg_pools, (int) id);
+
+ return pi ? pi->name : NULL;
+}
+EXPORT_SYMBOL(ceph_pg_pool_name_by_id);
+
int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name)
{
struct rb_node *rbp;
@@ -457,52 +511,109 @@ static void __remove_pg_pool(struct rb_root *root, struct ceph_pg_pool_info *pi)
kfree(pi);
}
-static int __decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi)
+static int decode_pool(void **p, void *end, struct ceph_pg_pool_info *pi)
{
- unsigned n, m;
+ u8 ev, cv;
+ unsigned len, num;
+ void *pool_end;
+
+ ceph_decode_need(p, end, 2 + 4, bad);
+ ev = ceph_decode_8(p); /* encoding version */
+ cv = ceph_decode_8(p); /* compat version */
+ if (ev < 5) {
+ pr_warning("got v %d < 5 cv %d of ceph_pg_pool\n", ev, cv);
+ return -EINVAL;
+ }
+ if (cv > 9) {
+ pr_warning("got v %d cv %d > 9 of ceph_pg_pool\n", ev, cv);
+ return -EINVAL;
+ }
+ len = ceph_decode_32(p);
+ ceph_decode_need(p, end, len, bad);
+ pool_end = *p + len;
- ceph_decode_copy(p, &pi->v, sizeof(pi->v));
- calc_pg_masks(pi);
+ pi->type = ceph_decode_8(p);
+ pi->size = ceph_decode_8(p);
+ pi->crush_ruleset = ceph_decode_8(p);
+ pi->object_hash = ceph_decode_8(p);
- /* num_snaps * snap_info_t */
- n = le32_to_cpu(pi->v.num_snaps);
- while (n--) {
- ceph_decode_need(p, end, sizeof(u64) + 1 + sizeof(u64) +
- sizeof(struct ceph_timespec), bad);
- *p += sizeof(u64) + /* key */
- 1 + sizeof(u64) + /* u8, snapid */
- sizeof(struct ceph_timespec);
- m = ceph_decode_32(p); /* snap name */
- *p += m;
+ pi->pg_num = ceph_decode_32(p);
+ pi->pgp_num = ceph_decode_32(p);
+
+ *p += 4 + 4; /* skip lpg* */
+ *p += 4; /* skip last_change */
+ *p += 8 + 4; /* skip snap_seq, snap_epoch */
+
+ /* skip snaps */
+ num = ceph_decode_32(p);
+ while (num--) {
+ *p += 8; /* snapid key */
+ *p += 1 + 1; /* versions */
+ len = ceph_decode_32(p);
+ *p += len;
+ }
+
+ /* skip removed_snaps */
+ num = ceph_decode_32(p);
+ *p += num * (8 + 8);
+
+ *p += 8; /* skip auid */
+ pi->flags = ceph_decode_64(p);
+ *p += 4; /* skip crash_replay_interval */
+
+ if (ev >= 7)
+ *p += 1; /* skip min_size */
+
+ if (ev >= 8)
+ *p += 8 + 8; /* skip quota_max_* */
+
+ if (ev >= 9) {
+ /* skip tiers */
+ num = ceph_decode_32(p);
+ *p += num * 8;
+
+ *p += 8; /* skip tier_of */
+ *p += 1; /* skip cache_mode */
+
+ pi->read_tier = ceph_decode_64(p);
+ pi->write_tier = ceph_decode_64(p);
+ } else {
+ pi->read_tier = -1;
+ pi->write_tier = -1;
}
- *p += le32_to_cpu(pi->v.num_removed_snap_intervals) * sizeof(u64) * 2;
+ /* ignore the rest */
+
+ *p = pool_end;
+ calc_pg_masks(pi);
return 0;
bad:
return -EINVAL;
}
-static int __decode_pool_names(void **p, void *end, struct ceph_osdmap *map)
+static int decode_pool_names(void **p, void *end, struct ceph_osdmap *map)
{
struct ceph_pg_pool_info *pi;
- u32 num, len, pool;
+ u32 num, len;
+ u64 pool;
ceph_decode_32_safe(p, end, num, bad);
dout(" %d pool names\n", num);
while (num--) {
- ceph_decode_32_safe(p, end, pool, bad);
+ ceph_decode_64_safe(p, end, pool, bad);
ceph_decode_32_safe(p, end, len, bad);
- dout(" pool %d len %d\n", pool, len);
+ dout(" pool %llu len %d\n", pool, len);
+ ceph_decode_need(p, end, len, bad);
pi = __lookup_pg_pool(&map->pg_pools, pool);
if (pi) {
+ char *name = kstrndup(*p, len, GFP_NOFS);
+
+ if (!name)
+ return -ENOMEM;
kfree(pi->name);
- pi->name = kmalloc(len + 1, GFP_NOFS);
- if (pi->name) {
- memcpy(pi->name, *p, len);
- pi->name[len] = '\0';
- dout(" name is %s\n", pi->name);
- }
+ pi->name = name;
+ dout(" name is %s\n", pi->name);
}
*p += len;
}
@@ -527,6 +638,13 @@ void ceph_osdmap_destroy(struct ceph_osdmap *map)
rb_erase(&pg->node, &map->pg_temp);
kfree(pg);
}
+ while (!RB_EMPTY_ROOT(&map->primary_temp)) {
+ struct ceph_pg_mapping *pg =
+ rb_entry(rb_first(&map->primary_temp),
+ struct ceph_pg_mapping, node);
+ rb_erase(&pg->node, &map->primary_temp);
+ kfree(pg);
+ }
while (!RB_EMPTY_ROOT(&map->pg_pools)) {
struct ceph_pg_pool_info *pi =
rb_entry(rb_first(&map->pg_pools),
@@ -536,181 +654,516 @@ void ceph_osdmap_destroy(struct ceph_osdmap *map)
kfree(map->osd_state);
kfree(map->osd_weight);
kfree(map->osd_addr);
+ kfree(map->osd_primary_affinity);
kfree(map);
}
/*
- * adjust max osd value. reallocate arrays.
+ * Adjust max_osd value, (re)allocate arrays.
+ *
+ * The new elements are properly initialized.
*/
static int osdmap_set_max_osd(struct ceph_osdmap *map, int max)
{
u8 *state;
- struct ceph_entity_addr *addr;
u32 *weight;
+ struct ceph_entity_addr *addr;
+ int i;
- state = kcalloc(max, sizeof(*state), GFP_NOFS);
- addr = kcalloc(max, sizeof(*addr), GFP_NOFS);
- weight = kcalloc(max, sizeof(*weight), GFP_NOFS);
- if (state == NULL || addr == NULL || weight == NULL) {
+ state = krealloc(map->osd_state, max*sizeof(*state), GFP_NOFS);
+ weight = krealloc(map->osd_weight, max*sizeof(*weight), GFP_NOFS);
+ addr = krealloc(map->osd_addr, max*sizeof(*addr), GFP_NOFS);
+ if (!state || !weight || !addr) {
kfree(state);
- kfree(addr);
kfree(weight);
+ kfree(addr);
+
return -ENOMEM;
}
- /* copy old? */
- if (map->osd_state) {
- memcpy(state, map->osd_state, map->max_osd*sizeof(*state));
- memcpy(addr, map->osd_addr, map->max_osd*sizeof(*addr));
- memcpy(weight, map->osd_weight, map->max_osd*sizeof(*weight));
- kfree(map->osd_state);
- kfree(map->osd_addr);
- kfree(map->osd_weight);
+ for (i = map->max_osd; i < max; i++) {
+ state[i] = 0;
+ weight[i] = CEPH_OSD_OUT;
+ memset(addr + i, 0, sizeof(*addr));
}
map->osd_state = state;
map->osd_weight = weight;
map->osd_addr = addr;
+
+ if (map->osd_primary_affinity) {
+ u32 *affinity;
+
+ affinity = krealloc(map->osd_primary_affinity,
+ max*sizeof(*affinity), GFP_NOFS);
+ if (!affinity)
+ return -ENOMEM;
+
+ for (i = map->max_osd; i < max; i++)
+ affinity[i] = CEPH_OSD_DEFAULT_PRIMARY_AFFINITY;
+
+ map->osd_primary_affinity = affinity;
+ }
+
map->max_osd = max;
+
return 0;
}
+#define OSDMAP_WRAPPER_COMPAT_VER 7
+#define OSDMAP_CLIENT_DATA_COMPAT_VER 1
+
+/*
+ * Return 0 or error. On success, *v is set to 0 for old (v6) osdmaps,
+ * to struct_v of the client_data section for new (v7 and above)
+ * osdmaps.
+ */
+static int get_osdmap_client_data_v(void **p, void *end,
+ const char *prefix, u8 *v)
+{
+ u8 struct_v;
+
+ ceph_decode_8_safe(p, end, struct_v, e_inval);
+ if (struct_v >= 7) {
+ u8 struct_compat;
+
+ ceph_decode_8_safe(p, end, struct_compat, e_inval);
+ if (struct_compat > OSDMAP_WRAPPER_COMPAT_VER) {
+ pr_warning("got v %d cv %d > %d of %s ceph_osdmap\n",
+ struct_v, struct_compat,
+ OSDMAP_WRAPPER_COMPAT_VER, prefix);
+ return -EINVAL;
+ }
+ *p += 4; /* ignore wrapper struct_len */
+
+ ceph_decode_8_safe(p, end, struct_v, e_inval);
+ ceph_decode_8_safe(p, end, struct_compat, e_inval);
+ if (struct_compat > OSDMAP_CLIENT_DATA_COMPAT_VER) {
+ pr_warning("got v %d cv %d > %d of %s ceph_osdmap client data\n",
+ struct_v, struct_compat,
+ OSDMAP_CLIENT_DATA_COMPAT_VER, prefix);
+ return -EINVAL;
+ }
+ *p += 4; /* ignore client data struct_len */
+ } else {
+ u16 version;
+
+ *p -= 1;
+ ceph_decode_16_safe(p, end, version, e_inval);
+ if (version < 6) {
+ pr_warning("got v %d < 6 of %s ceph_osdmap\n", version,
+ prefix);
+ return -EINVAL;
+ }
+
+ /* old osdmap enconding */
+ struct_v = 0;
+ }
+
+ *v = struct_v;
+ return 0;
+
+e_inval:
+ return -EINVAL;
+}
+
+static int __decode_pools(void **p, void *end, struct ceph_osdmap *map,
+ bool incremental)
+{
+ u32 n;
+
+ ceph_decode_32_safe(p, end, n, e_inval);
+ while (n--) {
+ struct ceph_pg_pool_info *pi;
+ u64 pool;
+ int ret;
+
+ ceph_decode_64_safe(p, end, pool, e_inval);
+
+ pi = __lookup_pg_pool(&map->pg_pools, pool);
+ if (!incremental || !pi) {
+ pi = kzalloc(sizeof(*pi), GFP_NOFS);
+ if (!pi)
+ return -ENOMEM;
+
+ pi->id = pool;
+
+ ret = __insert_pg_pool(&map->pg_pools, pi);
+ if (ret) {
+ kfree(pi);
+ return ret;
+ }
+ }
+
+ ret = decode_pool(p, end, pi);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+
+e_inval:
+ return -EINVAL;
+}
+
+static int decode_pools(void **p, void *end, struct ceph_osdmap *map)
+{
+ return __decode_pools(p, end, map, false);
+}
+
+static int decode_new_pools(void **p, void *end, struct ceph_osdmap *map)
+{
+ return __decode_pools(p, end, map, true);
+}
+
+static int __decode_pg_temp(void **p, void *end, struct ceph_osdmap *map,
+ bool incremental)
+{
+ u32 n;
+
+ ceph_decode_32_safe(p, end, n, e_inval);
+ while (n--) {
+ struct ceph_pg pgid;
+ u32 len, i;
+ int ret;
+
+ ret = ceph_decode_pgid(p, end, &pgid);
+ if (ret)
+ return ret;
+
+ ceph_decode_32_safe(p, end, len, e_inval);
+
+ ret = __remove_pg_mapping(&map->pg_temp, pgid);
+ BUG_ON(!incremental && ret != -ENOENT);
+
+ if (!incremental || len > 0) {
+ struct ceph_pg_mapping *pg;
+
+ ceph_decode_need(p, end, len*sizeof(u32), e_inval);
+
+ if (len > (UINT_MAX - sizeof(*pg)) / sizeof(u32))
+ return -EINVAL;
+
+ pg = kzalloc(sizeof(*pg) + len*sizeof(u32), GFP_NOFS);
+ if (!pg)
+ return -ENOMEM;
+
+ pg->pgid = pgid;
+ pg->pg_temp.len = len;
+ for (i = 0; i < len; i++)
+ pg->pg_temp.osds[i] = ceph_decode_32(p);
+
+ ret = __insert_pg_mapping(pg, &map->pg_temp);
+ if (ret) {
+ kfree(pg);
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+
+e_inval:
+ return -EINVAL;
+}
+
+static int decode_pg_temp(void **p, void *end, struct ceph_osdmap *map)
+{
+ return __decode_pg_temp(p, end, map, false);
+}
+
+static int decode_new_pg_temp(void **p, void *end, struct ceph_osdmap *map)
+{
+ return __decode_pg_temp(p, end, map, true);
+}
+
+static int __decode_primary_temp(void **p, void *end, struct ceph_osdmap *map,
+ bool incremental)
+{
+ u32 n;
+
+ ceph_decode_32_safe(p, end, n, e_inval);
+ while (n--) {
+ struct ceph_pg pgid;
+ u32 osd;
+ int ret;
+
+ ret = ceph_decode_pgid(p, end, &pgid);
+ if (ret)
+ return ret;
+
+ ceph_decode_32_safe(p, end, osd, e_inval);
+
+ ret = __remove_pg_mapping(&map->primary_temp, pgid);
+ BUG_ON(!incremental && ret != -ENOENT);
+
+ if (!incremental || osd != (u32)-1) {
+ struct ceph_pg_mapping *pg;
+
+ pg = kzalloc(sizeof(*pg), GFP_NOFS);
+ if (!pg)
+ return -ENOMEM;
+
+ pg->pgid = pgid;
+ pg->primary_temp.osd = osd;
+
+ ret = __insert_pg_mapping(pg, &map->primary_temp);
+ if (ret) {
+ kfree(pg);
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+
+e_inval:
+ return -EINVAL;
+}
+
+static int decode_primary_temp(void **p, void *end, struct ceph_osdmap *map)
+{
+ return __decode_primary_temp(p, end, map, false);
+}
+
+static int decode_new_primary_temp(void **p, void *end,
+ struct ceph_osdmap *map)
+{
+ return __decode_primary_temp(p, end, map, true);
+}
+
+u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd)
+{
+ BUG_ON(osd >= map->max_osd);
+
+ if (!map->osd_primary_affinity)
+ return CEPH_OSD_DEFAULT_PRIMARY_AFFINITY;
+
+ return map->osd_primary_affinity[osd];
+}
+
+static int set_primary_affinity(struct ceph_osdmap *map, int osd, u32 aff)
+{
+ BUG_ON(osd >= map->max_osd);
+
+ if (!map->osd_primary_affinity) {
+ int i;
+
+ map->osd_primary_affinity = kmalloc(map->max_osd*sizeof(u32),
+ GFP_NOFS);
+ if (!map->osd_primary_affinity)
+ return -ENOMEM;
+
+ for (i = 0; i < map->max_osd; i++)
+ map->osd_primary_affinity[i] =
+ CEPH_OSD_DEFAULT_PRIMARY_AFFINITY;
+ }
+
+ map->osd_primary_affinity[osd] = aff;
+
+ return 0;
+}
+
+static int decode_primary_affinity(void **p, void *end,
+ struct ceph_osdmap *map)
+{
+ u32 len, i;
+
+ ceph_decode_32_safe(p, end, len, e_inval);
+ if (len == 0) {
+ kfree(map->osd_primary_affinity);
+ map->osd_primary_affinity = NULL;
+ return 0;
+ }
+ if (len != map->max_osd)
+ goto e_inval;
+
+ ceph_decode_need(p, end, map->max_osd*sizeof(u32), e_inval);
+
+ for (i = 0; i < map->max_osd; i++) {
+ int ret;
+
+ ret = set_primary_affinity(map, i, ceph_decode_32(p));
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+
+e_inval:
+ return -EINVAL;
+}
+
+static int decode_new_primary_affinity(void **p, void *end,
+ struct ceph_osdmap *map)
+{
+ u32 n;
+
+ ceph_decode_32_safe(p, end, n, e_inval);
+ while (n--) {
+ u32 osd, aff;
+ int ret;
+
+ ceph_decode_32_safe(p, end, osd, e_inval);
+ ceph_decode_32_safe(p, end, aff, e_inval);
+
+ ret = set_primary_affinity(map, osd, aff);
+ if (ret)
+ return ret;
+
+ pr_info("osd%d primary-affinity 0x%x\n", osd, aff);
+ }
+
+ return 0;
+
+e_inval:
+ return -EINVAL;
+}
+
/*
* decode a full map.
*/
-struct ceph_osdmap *osdmap_decode(void **p, void *end)
+static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map)
{
- struct ceph_osdmap *map;
- u16 version;
- u32 len, max, i;
- u8 ev;
- int err = -EINVAL;
+ u8 struct_v;
+ u32 epoch = 0;
void *start = *p;
- struct ceph_pg_pool_info *pi;
-
- dout("osdmap_decode %p to %p len %d\n", *p, end, (int)(end - *p));
+ u32 max;
+ u32 len, i;
+ int err;
- map = kzalloc(sizeof(*map), GFP_NOFS);
- if (map == NULL)
- return ERR_PTR(-ENOMEM);
- map->pg_temp = RB_ROOT;
+ dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p));
- ceph_decode_16_safe(p, end, version, bad);
- if (version > CEPH_OSDMAP_VERSION) {
- pr_warning("got unknown v %d > %d of osdmap\n", version,
- CEPH_OSDMAP_VERSION);
+ err = get_osdmap_client_data_v(p, end, "full", &struct_v);
+ if (err)
goto bad;
- }
- ceph_decode_need(p, end, 2*sizeof(u64)+6*sizeof(u32), bad);
+ /* fsid, epoch, created, modified */
+ ceph_decode_need(p, end, sizeof(map->fsid) + sizeof(u32) +
+ sizeof(map->created) + sizeof(map->modified), e_inval);
ceph_decode_copy(p, &map->fsid, sizeof(map->fsid));
- map->epoch = ceph_decode_32(p);
+ epoch = map->epoch = ceph_decode_32(p);
ceph_decode_copy(p, &map->created, sizeof(map->created));
ceph_decode_copy(p, &map->modified, sizeof(map->modified));
- ceph_decode_32_safe(p, end, max, bad);
- while (max--) {
- ceph_decode_need(p, end, 4 + 1 + sizeof(pi->v), bad);
- pi = kzalloc(sizeof(*pi), GFP_NOFS);
- if (!pi)
- goto bad;
- pi->id = ceph_decode_32(p);
- ev = ceph_decode_8(p); /* encoding version */
- if (ev > CEPH_PG_POOL_VERSION) {
- pr_warning("got unknown v %d > %d of ceph_pg_pool\n",
- ev, CEPH_PG_POOL_VERSION);
- kfree(pi);
- goto bad;
- }
- err = __decode_pool(p, end, pi);
- if (err < 0) {
- kfree(pi);
- goto bad;
- }
- __insert_pg_pool(&map->pg_pools, pi);
- }
+ /* pools */
+ err = decode_pools(p, end, map);
+ if (err)
+ goto bad;
- if (version >= 5 && __decode_pool_names(p, end, map) < 0)
+ /* pool_name */
+ err = decode_pool_names(p, end, map);
+ if (err)
goto bad;
- ceph_decode_32_safe(p, end, map->pool_max, bad);
+ ceph_decode_32_safe(p, end, map->pool_max, e_inval);
- ceph_decode_32_safe(p, end, map->flags, bad);
+ ceph_decode_32_safe(p, end, map->flags, e_inval);
- max = ceph_decode_32(p);
+ /* max_osd */
+ ceph_decode_32_safe(p, end, max, e_inval);
/* (re)alloc osd arrays */
err = osdmap_set_max_osd(map, max);
- if (err < 0)
+ if (err)
goto bad;
- dout("osdmap_decode max_osd = %d\n", map->max_osd);
- /* osds */
- err = -EINVAL;
+ /* osd_state, osd_weight, osd_addrs->client_addr */
ceph_decode_need(p, end, 3*sizeof(u32) +
map->max_osd*(1 + sizeof(*map->osd_weight) +
- sizeof(*map->osd_addr)), bad);
- *p += 4; /* skip length field (should match max) */
+ sizeof(*map->osd_addr)), e_inval);
+
+ if (ceph_decode_32(p) != map->max_osd)
+ goto e_inval;
+
ceph_decode_copy(p, map->osd_state, map->max_osd);
- *p += 4; /* skip length field (should match max) */
+ if (ceph_decode_32(p) != map->max_osd)
+ goto e_inval;
+
for (i = 0; i < map->max_osd; i++)
map->osd_weight[i] = ceph_decode_32(p);
- *p += 4; /* skip length field (should match max) */
+ if (ceph_decode_32(p) != map->max_osd)
+ goto e_inval;
+
ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr));
for (i = 0; i < map->max_osd; i++)
ceph_decode_addr(&map->osd_addr[i]);
/* pg_temp */
- ceph_decode_32_safe(p, end, len, bad);
- for (i = 0; i < len; i++) {
- int n, j;
- struct ceph_pg pgid;
- struct ceph_pg_mapping *pg;
-
- ceph_decode_need(p, end, sizeof(u32) + sizeof(u64), bad);
- ceph_decode_copy(p, &pgid, sizeof(pgid));
- n = ceph_decode_32(p);
- ceph_decode_need(p, end, n * sizeof(u32), bad);
- err = -ENOMEM;
- pg = kmalloc(sizeof(*pg) + n*sizeof(u32), GFP_NOFS);
- if (!pg)
+ err = decode_pg_temp(p, end, map);
+ if (err)
+ goto bad;
+
+ /* primary_temp */
+ if (struct_v >= 1) {
+ err = decode_primary_temp(p, end, map);
+ if (err)
goto bad;
- pg->pgid = pgid;
- pg->len = n;
- for (j = 0; j < n; j++)
- pg->osds[j] = ceph_decode_32(p);
+ }
- err = __insert_pg_mapping(pg, &map->pg_temp);
+ /* primary_affinity */
+ if (struct_v >= 2) {
+ err = decode_primary_affinity(p, end, map);
if (err)
goto bad;
- dout(" added pg_temp %llx len %d\n", *(u64 *)&pgid, len);
+ } else {
+ /* XXX can this happen? */
+ kfree(map->osd_primary_affinity);
+ map->osd_primary_affinity = NULL;
}
/* crush */
- ceph_decode_32_safe(p, end, len, bad);
- dout("osdmap_decode crush len %d from off 0x%x\n", len,
- (int)(*p - start));
- ceph_decode_need(p, end, len, bad);
- map->crush = crush_decode(*p, end);
- *p += len;
+ ceph_decode_32_safe(p, end, len, e_inval);
+ map->crush = crush_decode(*p, min(*p + len, end));
if (IS_ERR(map->crush)) {
err = PTR_ERR(map->crush);
map->crush = NULL;
goto bad;
}
+ *p += len;
- /* ignore the rest of the map */
+ /* ignore the rest */
*p = end;
- dout("osdmap_decode done %p %p\n", *p, end);
- return map;
+ dout("full osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd);
+ return 0;
+e_inval:
+ err = -EINVAL;
bad:
- dout("osdmap_decode fail\n");
- ceph_osdmap_destroy(map);
- return ERR_PTR(err);
+ pr_err("corrupt full osdmap (%d) epoch %d off %d (%p of %p-%p)\n",
+ err, epoch, (int)(*p - start), *p, start, end);
+ print_hex_dump(KERN_DEBUG, "osdmap: ",
+ DUMP_PREFIX_OFFSET, 16, 1,
+ start, end - start, true);
+ return err;
+}
+
+/*
+ * Allocate and decode a full map.
+ */
+struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end)
+{
+ struct ceph_osdmap *map;
+ int ret;
+
+ map = kzalloc(sizeof(*map), GFP_NOFS);
+ if (!map)
+ return ERR_PTR(-ENOMEM);
+
+ map->pg_temp = RB_ROOT;
+ map->primary_temp = RB_ROOT;
+ mutex_init(&map->crush_scratch_mutex);
+
+ ret = osdmap_decode(p, end, map);
+ if (ret) {
+ ceph_osdmap_destroy(map);
+ return ERR_PTR(ret);
+ }
+
+ return map;
}
/*
@@ -724,44 +1177,47 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
struct ceph_fsid fsid;
u32 epoch = 0;
struct ceph_timespec modified;
- u32 len, pool;
- __s32 new_pool_max, new_flags, max;
+ s32 len;
+ u64 pool;
+ __s64 new_pool_max;
+ __s32 new_flags, max;
void *start = *p;
- int err = -EINVAL;
- u16 version;
+ int err;
+ u8 struct_v;
- ceph_decode_16_safe(p, end, version, bad);
- if (version > CEPH_OSDMAP_INC_VERSION) {
- pr_warning("got unknown v %d > %d of inc osdmap\n", version,
- CEPH_OSDMAP_INC_VERSION);
+ dout("%s %p to %p len %d\n", __func__, *p, end, (int)(end - *p));
+
+ err = get_osdmap_client_data_v(p, end, "inc", &struct_v);
+ if (err)
goto bad;
- }
- ceph_decode_need(p, end, sizeof(fsid)+sizeof(modified)+2*sizeof(u32),
- bad);
+ /* fsid, epoch, modified, new_pool_max, new_flags */
+ ceph_decode_need(p, end, sizeof(fsid) + sizeof(u32) + sizeof(modified) +
+ sizeof(u64) + sizeof(u32), e_inval);
ceph_decode_copy(p, &fsid, sizeof(fsid));
epoch = ceph_decode_32(p);
BUG_ON(epoch != map->epoch+1);
ceph_decode_copy(p, &modified, sizeof(modified));
- new_pool_max = ceph_decode_32(p);
+ new_pool_max = ceph_decode_64(p);
new_flags = ceph_decode_32(p);
/* full map? */
- ceph_decode_32_safe(p, end, len, bad);
+ ceph_decode_32_safe(p, end, len, e_inval);
if (len > 0) {
dout("apply_incremental full map len %d, %p to %p\n",
len, *p, end);
- return osdmap_decode(p, min(*p+len, end));
+ return ceph_osdmap_decode(p, min(*p+len, end));
}
/* new crush? */
- ceph_decode_32_safe(p, end, len, bad);
+ ceph_decode_32_safe(p, end, len, e_inval);
if (len > 0) {
- dout("apply_incremental new crush map len %d, %p to %p\n",
- len, *p, end);
newcrush = crush_decode(*p, min(*p+len, end));
- if (IS_ERR(newcrush))
- return ERR_CAST(newcrush);
+ if (IS_ERR(newcrush)) {
+ err = PTR_ERR(newcrush);
+ newcrush = NULL;
+ goto bad;
+ }
*p += len;
}
@@ -771,13 +1227,11 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
if (new_pool_max >= 0)
map->pool_max = new_pool_max;
- ceph_decode_need(p, end, 5*sizeof(u32), bad);
-
/* new max? */
- max = ceph_decode_32(p);
+ ceph_decode_32_safe(p, end, max, e_inval);
if (max >= 0) {
err = osdmap_set_max_osd(map, max);
- if (err < 0)
+ if (err)
goto bad;
}
@@ -790,56 +1244,34 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
newcrush = NULL;
}
- /* new_pool */
- ceph_decode_32_safe(p, end, len, bad);
- while (len--) {
- __u8 ev;
- struct ceph_pg_pool_info *pi;
+ /* new_pools */
+ err = decode_new_pools(p, end, map);
+ if (err)
+ goto bad;
- ceph_decode_32_safe(p, end, pool, bad);
- ceph_decode_need(p, end, 1 + sizeof(pi->v), bad);
- ev = ceph_decode_8(p); /* encoding version */
- if (ev > CEPH_PG_POOL_VERSION) {
- pr_warning("got unknown v %d > %d of ceph_pg_pool\n",
- ev, CEPH_PG_POOL_VERSION);
- goto bad;
- }
- pi = __lookup_pg_pool(&map->pg_pools, pool);
- if (!pi) {
- pi = kzalloc(sizeof(*pi), GFP_NOFS);
- if (!pi) {
- err = -ENOMEM;
- goto bad;
- }
- pi->id = pool;
- __insert_pg_pool(&map->pg_pools, pi);
- }
- err = __decode_pool(p, end, pi);
- if (err < 0)
- goto bad;
- }
- if (version >= 5 && __decode_pool_names(p, end, map) < 0)
+ /* new_pool_names */
+ err = decode_pool_names(p, end, map);
+ if (err)
goto bad;
/* old_pool */
- ceph_decode_32_safe(p, end, len, bad);
+ ceph_decode_32_safe(p, end, len, e_inval);
while (len--) {
struct ceph_pg_pool_info *pi;
- ceph_decode_32_safe(p, end, pool, bad);
+ ceph_decode_64_safe(p, end, pool, e_inval);
pi = __lookup_pg_pool(&map->pg_pools, pool);
if (pi)
__remove_pg_pool(&map->pg_pools, pi);
}
/* new_up */
- err = -EINVAL;
- ceph_decode_32_safe(p, end, len, bad);
+ ceph_decode_32_safe(p, end, len, e_inval);
while (len--) {
u32 osd;
struct ceph_entity_addr addr;
- ceph_decode_32_safe(p, end, osd, bad);
- ceph_decode_copy_safe(p, end, &addr, sizeof(addr), bad);
+ ceph_decode_32_safe(p, end, osd, e_inval);
+ ceph_decode_copy_safe(p, end, &addr, sizeof(addr), e_inval);
ceph_decode_addr(&addr);
pr_info("osd%d up\n", osd);
BUG_ON(osd >= map->max_osd);
@@ -848,11 +1280,11 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
}
/* new_state */
- ceph_decode_32_safe(p, end, len, bad);
+ ceph_decode_32_safe(p, end, len, e_inval);
while (len--) {
u32 osd;
u8 xorstate;
- ceph_decode_32_safe(p, end, osd, bad);
+ ceph_decode_32_safe(p, end, osd, e_inval);
xorstate = **(u8 **)p;
(*p)++; /* clean flag */
if (xorstate == 0)
@@ -864,10 +1296,10 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
}
/* new_weight */
- ceph_decode_32_safe(p, end, len, bad);
+ ceph_decode_32_safe(p, end, len, e_inval);
while (len--) {
u32 osd, off;
- ceph_decode_need(p, end, sizeof(u32)*2, bad);
+ ceph_decode_need(p, end, sizeof(u32)*2, e_inval);
osd = ceph_decode_32(p);
off = ceph_decode_32(p);
pr_info("osd%d weight 0x%x %s\n", osd, off,
@@ -878,48 +1310,35 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
}
/* new_pg_temp */
- ceph_decode_32_safe(p, end, len, bad);
- while (len--) {
- struct ceph_pg_mapping *pg;
- int j;
- struct ceph_pg pgid;
- u32 pglen;
- ceph_decode_need(p, end, sizeof(u64) + sizeof(u32), bad);
- ceph_decode_copy(p, &pgid, sizeof(pgid));
- pglen = ceph_decode_32(p);
-
- if (pglen) {
- /* insert */
- ceph_decode_need(p, end, pglen*sizeof(u32), bad);
- pg = kmalloc(sizeof(*pg) + sizeof(u32)*pglen, GFP_NOFS);
- if (!pg) {
- err = -ENOMEM;
- goto bad;
- }
- pg->pgid = pgid;
- pg->len = pglen;
- for (j = 0; j < pglen; j++)
- pg->osds[j] = ceph_decode_32(p);
- err = __insert_pg_mapping(pg, &map->pg_temp);
- if (err) {
- kfree(pg);
- goto bad;
- }
- dout(" added pg_temp %llx len %d\n", *(u64 *)&pgid,
- pglen);
- } else {
- /* remove */
- __remove_pg_mapping(&map->pg_temp, pgid);
- }
+ err = decode_new_pg_temp(p, end, map);
+ if (err)
+ goto bad;
+
+ /* new_primary_temp */
+ if (struct_v >= 1) {
+ err = decode_new_primary_temp(p, end, map);
+ if (err)
+ goto bad;
+ }
+
+ /* new_primary_affinity */
+ if (struct_v >= 2) {
+ err = decode_new_primary_affinity(p, end, map);
+ if (err)
+ goto bad;
}
/* ignore the rest */
*p = end;
+
+ dout("inc osdmap epoch %d max_osd %d\n", map->epoch, map->max_osd);
return map;
+e_inval:
+ err = -EINVAL;
bad:
- pr_err("corrupt inc osdmap epoch %d off %d (%p of %p-%p)\n",
- epoch, (int)(*p - start), *p, start, end);
+ pr_err("corrupt inc osdmap (%d) epoch %d off %d (%p of %p-%p)\n",
+ err, epoch, (int)(*p - start), *p, start, end);
print_hex_dump(KERN_DEBUG, "osdmap: ",
DUMP_PREFIX_OFFSET, 16, 1,
start, end - start, true);
@@ -939,8 +1358,8 @@ bad:
* for now, we write only a single su, until we can
* pass a stride back to the caller.
*/
-void ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
- u64 off, u64 *plen,
+int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
+ u64 off, u64 len,
u64 *ono,
u64 *oxoff, u64 *oxlen)
{
@@ -951,13 +1370,19 @@ void ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
u32 su_per_object;
u64 t, su_offset;
- dout("mapping %llu~%llu osize %u fl_su %u\n", off, *plen,
+ dout("mapping %llu~%llu osize %u fl_su %u\n", off, len,
osize, su);
+ if (su == 0 || sc == 0)
+ goto invalid;
su_per_object = osize / su;
+ if (su_per_object == 0)
+ goto invalid;
dout("osize %u / su %u = su_per_object %u\n", osize, su,
su_per_object);
- BUG_ON((su & ~PAGE_MASK) != 0);
+ if ((su & ~PAGE_MASK) != 0)
+ goto invalid;
+
/* bl = *off / su; */
t = off;
do_div(t, su);
@@ -969,7 +1394,7 @@ void ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
objsetno = stripeno / su_per_object;
*ono = objsetno * sc + stripepos;
- dout("objset %u * sc %u = ono %u\n", objsetno, sc, (unsigned)*ono);
+ dout("objset %u * sc %u = ono %u\n", objsetno, sc, (unsigned int)*ono);
/* *oxoff = *off % layout->fl_stripe_unit; # offset in su */
t = off;
@@ -978,146 +1403,315 @@ void ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
/*
* Calculate the length of the extent being written to the selected
- * object. This is the minimum of the full length requested (plen) or
+ * object. This is the minimum of the full length requested (len) or
* the remainder of the current stripe being written to.
*/
- *oxlen = min_t(u64, *plen, su - su_offset);
- *plen = *oxlen;
+ *oxlen = min_t(u64, len, su - su_offset);
dout(" obj extent %llu~%llu\n", *oxoff, *oxlen);
+ return 0;
+
+invalid:
+ dout(" invalid layout\n");
+ *ono = 0;
+ *oxoff = 0;
+ *oxlen = 0;
+ return -EINVAL;
}
EXPORT_SYMBOL(ceph_calc_file_object_mapping);
/*
- * calculate an object layout (i.e. pgid) from an oid,
- * file_layout, and osdmap
+ * Calculate mapping of a (oloc, oid) pair to a PG. Should only be
+ * called with target's (oloc, oid), since tiering isn't taken into
+ * account.
*/
-int ceph_calc_object_layout(struct ceph_object_layout *ol,
- const char *oid,
- struct ceph_file_layout *fl,
- struct ceph_osdmap *osdmap)
+int ceph_oloc_oid_to_pg(struct ceph_osdmap *osdmap,
+ struct ceph_object_locator *oloc,
+ struct ceph_object_id *oid,
+ struct ceph_pg *pg_out)
{
- unsigned num, num_mask;
- struct ceph_pg pgid;
- s32 preferred = (s32)le32_to_cpu(fl->fl_pg_preferred);
- int poolid = le32_to_cpu(fl->fl_pg_pool);
- struct ceph_pg_pool_info *pool;
- unsigned ps;
-
- BUG_ON(!osdmap);
+ struct ceph_pg_pool_info *pi;
- pool = __lookup_pg_pool(&osdmap->pg_pools, poolid);
- if (!pool)
+ pi = __lookup_pg_pool(&osdmap->pg_pools, oloc->pool);
+ if (!pi)
return -EIO;
- ps = ceph_str_hash(pool->v.object_hash, oid, strlen(oid));
- if (preferred >= 0) {
- ps += preferred;
- num = le32_to_cpu(pool->v.lpg_num);
- num_mask = pool->lpg_num_mask;
- } else {
- num = le32_to_cpu(pool->v.pg_num);
- num_mask = pool->pg_num_mask;
- }
- pgid.ps = cpu_to_le16(ps);
- pgid.preferred = cpu_to_le16(preferred);
- pgid.pool = fl->fl_pg_pool;
- if (preferred >= 0)
- dout("calc_object_layout '%s' pgid %d.%xp%d\n", oid, poolid, ps,
- (int)preferred);
- else
- dout("calc_object_layout '%s' pgid %d.%x\n", oid, poolid, ps);
+ pg_out->pool = oloc->pool;
+ pg_out->seed = ceph_str_hash(pi->object_hash, oid->name,
+ oid->name_len);
- ol->ol_pgid = pgid;
- ol->ol_stripe_unit = fl->fl_object_stripe_unit;
+ dout("%s '%.*s' pgid %llu.%x\n", __func__, oid->name_len, oid->name,
+ pg_out->pool, pg_out->seed);
return 0;
}
-EXPORT_SYMBOL(ceph_calc_object_layout);
+EXPORT_SYMBOL(ceph_oloc_oid_to_pg);
+
+static int do_crush(struct ceph_osdmap *map, int ruleno, int x,
+ int *result, int result_max,
+ const __u32 *weight, int weight_max)
+{
+ int r;
+
+ BUG_ON(result_max > CEPH_PG_MAX_SIZE);
+
+ mutex_lock(&map->crush_scratch_mutex);
+ r = crush_do_rule(map->crush, ruleno, x, result, result_max,
+ weight, weight_max, map->crush_scratch_ary);
+ mutex_unlock(&map->crush_scratch_mutex);
+
+ return r;
+}
/*
- * Calculate raw osd vector for the given pgid. Return pointer to osd
- * array, or NULL on failure.
+ * Calculate raw (crush) set for given pgid.
+ *
+ * Return raw set length, or error.
*/
-static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid,
- int *osds, int *num)
+static int pg_to_raw_osds(struct ceph_osdmap *osdmap,
+ struct ceph_pg_pool_info *pool,
+ struct ceph_pg pgid, u32 pps, int *osds)
{
- struct ceph_pg_mapping *pg;
- struct ceph_pg_pool_info *pool;
int ruleno;
- unsigned poolid, ps, pps, t;
- int preferred;
+ int len;
+
+ /* crush */
+ ruleno = crush_find_rule(osdmap->crush, pool->crush_ruleset,
+ pool->type, pool->size);
+ if (ruleno < 0) {
+ pr_err("no crush rule: pool %lld ruleset %d type %d size %d\n",
+ pgid.pool, pool->crush_ruleset, pool->type,
+ pool->size);
+ return -ENOENT;
+ }
- poolid = le32_to_cpu(pgid.pool);
- ps = le16_to_cpu(pgid.ps);
- preferred = (s16)le16_to_cpu(pgid.preferred);
+ len = do_crush(osdmap, ruleno, pps, osds,
+ min_t(int, pool->size, CEPH_PG_MAX_SIZE),
+ osdmap->osd_weight, osdmap->max_osd);
+ if (len < 0) {
+ pr_err("error %d from crush rule %d: pool %lld ruleset %d type %d size %d\n",
+ len, ruleno, pgid.pool, pool->crush_ruleset,
+ pool->type, pool->size);
+ return len;
+ }
- pool = __lookup_pg_pool(&osdmap->pg_pools, poolid);
- if (!pool)
- return NULL;
+ return len;
+}
+
+/*
+ * Given raw set, calculate up set and up primary.
+ *
+ * Return up set length. *primary is set to up primary osd id, or -1
+ * if up set is empty.
+ */
+static int raw_to_up_osds(struct ceph_osdmap *osdmap,
+ struct ceph_pg_pool_info *pool,
+ int *osds, int len, int *primary)
+{
+ int up_primary = -1;
+ int i;
+
+ if (ceph_can_shift_osds(pool)) {
+ int removed = 0;
+
+ for (i = 0; i < len; i++) {
+ if (ceph_osd_is_down(osdmap, osds[i])) {
+ removed++;
+ continue;
+ }
+ if (removed)
+ osds[i - removed] = osds[i];
+ }
+
+ len -= removed;
+ if (len > 0)
+ up_primary = osds[0];
+ } else {
+ for (i = len - 1; i >= 0; i--) {
+ if (ceph_osd_is_down(osdmap, osds[i]))
+ osds[i] = CRUSH_ITEM_NONE;
+ else
+ up_primary = osds[i];
+ }
+ }
+
+ *primary = up_primary;
+ return len;
+}
+
+static void apply_primary_affinity(struct ceph_osdmap *osdmap, u32 pps,
+ struct ceph_pg_pool_info *pool,
+ int *osds, int len, int *primary)
+{
+ int i;
+ int pos = -1;
+
+ /*
+ * Do we have any non-default primary_affinity values for these
+ * osds?
+ */
+ if (!osdmap->osd_primary_affinity)
+ return;
+
+ for (i = 0; i < len; i++) {
+ int osd = osds[i];
+
+ if (osd != CRUSH_ITEM_NONE &&
+ osdmap->osd_primary_affinity[osd] !=
+ CEPH_OSD_DEFAULT_PRIMARY_AFFINITY) {
+ break;
+ }
+ }
+ if (i == len)
+ return;
+
+ /*
+ * Pick the primary. Feed both the seed (for the pg) and the
+ * osd into the hash/rng so that a proportional fraction of an
+ * osd's pgs get rejected as primary.
+ */
+ for (i = 0; i < len; i++) {
+ int osd = osds[i];
+ u32 aff;
+
+ if (osd == CRUSH_ITEM_NONE)
+ continue;
+
+ aff = osdmap->osd_primary_affinity[osd];
+ if (aff < CEPH_OSD_MAX_PRIMARY_AFFINITY &&
+ (crush_hash32_2(CRUSH_HASH_RJENKINS1,
+ pps, osd) >> 16) >= aff) {
+ /*
+ * We chose not to use this primary. Note it
+ * anyway as a fallback in case we don't pick
+ * anyone else, but keep looking.
+ */
+ if (pos < 0)
+ pos = i;
+ } else {
+ pos = i;
+ break;
+ }
+ }
+ if (pos < 0)
+ return;
+
+ *primary = osds[pos];
+
+ if (ceph_can_shift_osds(pool) && pos > 0) {
+ /* move the new primary to the front */
+ for (i = pos; i > 0; i--)
+ osds[i] = osds[i - 1];
+ osds[0] = *primary;
+ }
+}
+
+/*
+ * Given up set, apply pg_temp and primary_temp mappings.
+ *
+ * Return acting set length. *primary is set to acting primary osd id,
+ * or -1 if acting set is empty.
+ */
+static int apply_temps(struct ceph_osdmap *osdmap,
+ struct ceph_pg_pool_info *pool, struct ceph_pg pgid,
+ int *osds, int len, int *primary)
+{
+ struct ceph_pg_mapping *pg;
+ int temp_len;
+ int temp_primary;
+ int i;
+
+ /* raw_pg -> pg */
+ pgid.seed = ceph_stable_mod(pgid.seed, pool->pg_num,
+ pool->pg_num_mask);
/* pg_temp? */
- if (preferred >= 0)
- t = ceph_stable_mod(ps, le32_to_cpu(pool->v.lpg_num),
- pool->lpgp_num_mask);
- else
- t = ceph_stable_mod(ps, le32_to_cpu(pool->v.pg_num),
- pool->pgp_num_mask);
- pgid.ps = cpu_to_le16(t);
pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid);
if (pg) {
- *num = pg->len;
- return pg->osds;
- }
+ temp_len = 0;
+ temp_primary = -1;
+
+ for (i = 0; i < pg->pg_temp.len; i++) {
+ if (ceph_osd_is_down(osdmap, pg->pg_temp.osds[i])) {
+ if (ceph_can_shift_osds(pool))
+ continue;
+ else
+ osds[temp_len++] = CRUSH_ITEM_NONE;
+ } else {
+ osds[temp_len++] = pg->pg_temp.osds[i];
+ }
+ }
- /* crush */
- ruleno = crush_find_rule(osdmap->crush, pool->v.crush_ruleset,
- pool->v.type, pool->v.size);
- if (ruleno < 0) {
- pr_err("no crush rule pool %d ruleset %d type %d size %d\n",
- poolid, pool->v.crush_ruleset, pool->v.type,
- pool->v.size);
- return NULL;
+ /* apply pg_temp's primary */
+ for (i = 0; i < temp_len; i++) {
+ if (osds[i] != CRUSH_ITEM_NONE) {
+ temp_primary = osds[i];
+ break;
+ }
+ }
+ } else {
+ temp_len = len;
+ temp_primary = *primary;
}
- /* don't forcefeed bad device ids to crush */
- if (preferred >= osdmap->max_osd ||
- preferred >= osdmap->crush->max_devices)
- preferred = -1;
+ /* primary_temp? */
+ pg = __lookup_pg_mapping(&osdmap->primary_temp, pgid);
+ if (pg)
+ temp_primary = pg->primary_temp.osd;
- if (preferred >= 0)
- pps = ceph_stable_mod(ps,
- le32_to_cpu(pool->v.lpgp_num),
- pool->lpgp_num_mask);
- else
- pps = ceph_stable_mod(ps,
- le32_to_cpu(pool->v.pgp_num),
- pool->pgp_num_mask);
- pps += poolid;
- *num = crush_do_rule(osdmap->crush, ruleno, pps, osds,
- min_t(int, pool->v.size, *num),
- preferred, osdmap->osd_weight);
- return osds;
+ *primary = temp_primary;
+ return temp_len;
}
/*
- * Return acting set for given pgid.
+ * Calculate acting set for given pgid.
+ *
+ * Return acting set length, or error. *primary is set to acting
+ * primary osd id, or -1 if acting set is empty or on error.
*/
int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid,
- int *acting)
+ int *osds, int *primary)
{
- int rawosds[CEPH_PG_MAX_SIZE], *osds;
- int i, o, num = CEPH_PG_MAX_SIZE;
+ struct ceph_pg_pool_info *pool;
+ u32 pps;
+ int len;
- osds = calc_pg_raw(osdmap, pgid, rawosds, &num);
- if (!osds)
- return -1;
+ pool = __lookup_pg_pool(&osdmap->pg_pools, pgid.pool);
+ if (!pool) {
+ *primary = -1;
+ return -ENOENT;
+ }
+
+ if (pool->flags & CEPH_POOL_FLAG_HASHPSPOOL) {
+ /* hash pool id and seed so that pool PGs do not overlap */
+ pps = crush_hash32_2(CRUSH_HASH_RJENKINS1,
+ ceph_stable_mod(pgid.seed, pool->pgp_num,
+ pool->pgp_num_mask),
+ pgid.pool);
+ } else {
+ /*
+ * legacy behavior: add ps and pool together. this is
+ * not a great approach because the PGs from each pool
+ * will overlap on top of each other: 0.5 == 1.4 ==
+ * 2.3 == ...
+ */
+ pps = ceph_stable_mod(pgid.seed, pool->pgp_num,
+ pool->pgp_num_mask) +
+ (unsigned)pgid.pool;
+ }
- /* primary is first up osd */
- o = 0;
- for (i = 0; i < num; i++)
- if (ceph_osd_is_up(osdmap, osds[i]))
- acting[o++] = osds[i];
- return o;
+ len = pg_to_raw_osds(osdmap, pool, pgid, pps, osds);
+ if (len < 0) {
+ *primary = -1;
+ return len;
+ }
+
+ len = raw_to_up_osds(osdmap, pool, osds, len, primary);
+
+ apply_primary_affinity(osdmap, pps, pool, osds, len, primary);
+
+ len = apply_temps(osdmap, pool, pgid, osds, len, primary);
+
+ return len;
}
/*
@@ -1125,17 +1719,11 @@ int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid,
*/
int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid)
{
- int rawosds[CEPH_PG_MAX_SIZE], *osds;
- int i, num = CEPH_PG_MAX_SIZE;
+ int osds[CEPH_PG_MAX_SIZE];
+ int primary;
- osds = calc_pg_raw(osdmap, pgid, rawosds, &num);
- if (!osds)
- return -1;
+ ceph_calc_pg_acting(osdmap, pgid, osds, &primary);
- /* primary is first up osd */
- for (i = 0; i < num; i++)
- if (ceph_osd_is_up(osdmap, osds[i]))
- return osds[i];
- return -1;
+ return primary;
}
EXPORT_SYMBOL(ceph_calc_pg_primary);
diff --git a/net/ceph/pagelist.c b/net/ceph/pagelist.c
index 13cb409a7bb..92866bebb65 100644
--- a/net/ceph/pagelist.c
+++ b/net/ceph/pagelist.c
@@ -1,4 +1,3 @@
-
#include <linux/module.h>
#include <linux/gfp.h>
#include <linux/pagemap.h>
@@ -72,8 +71,7 @@ int ceph_pagelist_append(struct ceph_pagelist *pl, const void *buf, size_t len)
}
EXPORT_SYMBOL(ceph_pagelist_append);
-/**
- * Allocate enough pages for a pagelist to append the given amount
+/* Allocate enough pages for a pagelist to append the given amount
* of data without without allocating.
* Returns: 0 on success, -ENOMEM on error.
*/
@@ -95,9 +93,7 @@ int ceph_pagelist_reserve(struct ceph_pagelist *pl, size_t space)
}
EXPORT_SYMBOL(ceph_pagelist_reserve);
-/**
- * Free any pages that have been preallocated.
- */
+/* Free any pages that have been preallocated. */
int ceph_pagelist_free_reserve(struct ceph_pagelist *pl)
{
while (!list_empty(&pl->free_list)) {
@@ -112,9 +108,7 @@ int ceph_pagelist_free_reserve(struct ceph_pagelist *pl)
}
EXPORT_SYMBOL(ceph_pagelist_free_reserve);
-/**
- * Create a truncation point.
- */
+/* Create a truncation point. */
void ceph_pagelist_set_cursor(struct ceph_pagelist *pl,
struct ceph_pagelist_cursor *c)
{
@@ -124,8 +118,7 @@ void ceph_pagelist_set_cursor(struct ceph_pagelist *pl,
}
EXPORT_SYMBOL(ceph_pagelist_set_cursor);
-/**
- * Truncate a pagelist to the given point. Move extra pages to reserve.
+/* Truncate a pagelist to the given point. Move extra pages to reserve.
* This won't sleep.
* Returns: 0 on success,
* -EINVAL if the pagelist doesn't match the trunc point pagelist
@@ -140,8 +133,8 @@ int ceph_pagelist_truncate(struct ceph_pagelist *pl,
ceph_pagelist_unmap_tail(pl);
while (pl->head.prev != c->page_lru) {
page = list_entry(pl->head.prev, struct page, lru);
- list_del(&page->lru); /* remove from pagelist */
- list_add_tail(&page->lru, &pl->free_list); /* add to reserve */
+ /* move from pagelist to reserve */
+ list_move_tail(&page->lru, &pl->free_list);
++pl->num_pages_free;
}
pl->room = c->room;
diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c
index cd9c21df87d..555013034f7 100644
--- a/net/ceph/pagevec.c
+++ b/net/ceph/pagevec.c
@@ -12,7 +12,7 @@
/*
* build a vector of user pages
*/
-struct page **ceph_get_direct_page_vector(const char __user *data,
+struct page **ceph_get_direct_page_vector(const void __user *data,
int num_pages, bool write_page)
{
struct page **pages;
@@ -53,7 +53,10 @@ void ceph_put_page_vector(struct page **pages, int num_pages, bool dirty)
set_page_dirty_lock(pages[i]);
put_page(pages[i]);
}
- kfree(pages);
+ if (is_vmalloc_addr(pages))
+ vfree(pages);
+ else
+ kfree(pages);
}
EXPORT_SYMBOL(ceph_put_page_vector);
@@ -93,7 +96,7 @@ EXPORT_SYMBOL(ceph_alloc_page_vector);
* copy user data into a page vector
*/
int ceph_copy_user_to_page_vector(struct page **pages,
- const char __user *data,
+ const void __user *data,
loff_t off, size_t len)
{
int i = 0;
@@ -118,17 +121,17 @@ int ceph_copy_user_to_page_vector(struct page **pages,
}
EXPORT_SYMBOL(ceph_copy_user_to_page_vector);
-int ceph_copy_to_page_vector(struct page **pages,
- const char *data,
+void ceph_copy_to_page_vector(struct page **pages,
+ const void *data,
loff_t off, size_t len)
{
int i = 0;
size_t po = off & ~PAGE_CACHE_MASK;
size_t left = len;
- size_t l;
while (left > 0) {
- l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
+ size_t l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
+
memcpy(page_address(pages[i]) + po, data, l);
data += l;
left -= l;
@@ -138,21 +141,20 @@ int ceph_copy_to_page_vector(struct page **pages,
i++;
}
}
- return len;
}
EXPORT_SYMBOL(ceph_copy_to_page_vector);
-int ceph_copy_from_page_vector(struct page **pages,
- char *data,
+void ceph_copy_from_page_vector(struct page **pages,
+ void *data,
loff_t off, size_t len)
{
int i = 0;
size_t po = off & ~PAGE_CACHE_MASK;
size_t left = len;
- size_t l;
while (left > 0) {
- l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
+ size_t l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
+
memcpy(data, page_address(pages[i]) + po, l);
data += l;
left -= l;
@@ -162,41 +164,10 @@ int ceph_copy_from_page_vector(struct page **pages,
i++;
}
}
- return len;
}
EXPORT_SYMBOL(ceph_copy_from_page_vector);
/*
- * copy user data from a page vector into a user pointer
- */
-int ceph_copy_page_vector_to_user(struct page **pages,
- char __user *data,
- loff_t off, size_t len)
-{
- int i = 0;
- int po = off & ~PAGE_CACHE_MASK;
- int left = len;
- int l, bad;
-
- while (left > 0) {
- l = min_t(int, left, PAGE_CACHE_SIZE-po);
- bad = copy_to_user(data, page_address(pages[i]) + po, l);
- if (bad == l)
- return -EFAULT;
- data += l - bad;
- left -= l - bad;
- if (po) {
- po += l - bad;
- if (po == PAGE_CACHE_SIZE)
- po = 0;
- }
- i++;
- }
- return len;
-}
-EXPORT_SYMBOL(ceph_copy_page_vector_to_user);
-
-/*
* Zero an extent within a page vector. Offset is relative to the
* start of the first page.
*/
diff --git a/net/ceph/snapshot.c b/net/ceph/snapshot.c
new file mode 100644
index 00000000000..154683f5f14
--- /dev/null
+++ b/net/ceph/snapshot.c
@@ -0,0 +1,78 @@
+/*
+ * snapshot.c Ceph snapshot context utility routines (part of libceph)
+ *
+ * Copyright (C) 2013 Inktank Storage, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include <stddef.h>
+
+#include <linux/types.h>
+#include <linux/export.h>
+#include <linux/ceph/libceph.h>
+
+/*
+ * Ceph snapshot contexts are reference counted objects, and the
+ * returned structure holds a single reference. Acquire additional
+ * references with ceph_get_snap_context(), and release them with
+ * ceph_put_snap_context(). When the reference count reaches zero
+ * the entire structure is freed.
+ */
+
+/*
+ * Create a new ceph snapshot context large enough to hold the
+ * indicated number of snapshot ids (which can be 0). Caller has
+ * to fill in snapc->seq and snapc->snaps[0..snap_count-1].
+ *
+ * Returns a null pointer if an error occurs.
+ */
+struct ceph_snap_context *ceph_create_snap_context(u32 snap_count,
+ gfp_t gfp_flags)
+{
+ struct ceph_snap_context *snapc;
+ size_t size;
+
+ size = sizeof (struct ceph_snap_context);
+ size += snap_count * sizeof (snapc->snaps[0]);
+ snapc = kzalloc(size, gfp_flags);
+ if (!snapc)
+ return NULL;
+
+ atomic_set(&snapc->nref, 1);
+ snapc->num_snaps = snap_count;
+
+ return snapc;
+}
+EXPORT_SYMBOL(ceph_create_snap_context);
+
+struct ceph_snap_context *ceph_get_snap_context(struct ceph_snap_context *sc)
+{
+ if (sc)
+ atomic_inc(&sc->nref);
+ return sc;
+}
+EXPORT_SYMBOL(ceph_get_snap_context);
+
+void ceph_put_snap_context(struct ceph_snap_context *sc)
+{
+ if (!sc)
+ return;
+ if (atomic_dec_and_test(&sc->nref)) {
+ /*printk(" deleting snap_context %p\n", sc);*/
+ kfree(sc);
+ }
+}
+EXPORT_SYMBOL(ceph_put_snap_context);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 14:08:37 +0000