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path: root/drivers/scsi/cxgbi/libcxgbi.c
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Diffstat (limited to 'drivers/scsi/cxgbi/libcxgbi.c')
-rw-r--r--drivers/scsi/cxgbi/libcxgbi.c132
1 files changed, 97 insertions, 35 deletions
diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index de764ea7419..b44c1cff311 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -25,6 +25,7 @@
#include <net/dst.h>
#include <net/route.h>
#include <linux/inetdevice.h> /* ip_dev_find */
+#include <linux/module.h>
#include <net/tcp.h>
static unsigned int dbg_level;
@@ -450,12 +451,13 @@ static struct cxgbi_sock *cxgbi_sock_create(struct cxgbi_device *cdev)
return csk;
}
-static struct rtable *find_route_ipv4(__be32 saddr, __be32 daddr,
+static struct rtable *find_route_ipv4(struct flowi4 *fl4,
+ __be32 saddr, __be32 daddr,
__be16 sport, __be16 dport, u8 tos)
{
struct rtable *rt;
- rt = ip_route_output_ports(&init_net, NULL, daddr, saddr,
+ rt = ip_route_output_ports(&init_net, fl4, NULL, daddr, saddr,
dport, sport, IPPROTO_TCP, tos, 0);
if (IS_ERR(rt))
return NULL;
@@ -470,6 +472,8 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
struct net_device *ndev;
struct cxgbi_device *cdev;
struct rtable *rt = NULL;
+ struct neighbour *n;
+ struct flowi4 fl4;
struct cxgbi_sock *csk = NULL;
unsigned int mtu = 0;
int port = 0xFFFF;
@@ -482,7 +486,7 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
goto err_out;
}
- rt = find_route_ipv4(0, daddr->sin_addr.s_addr, 0, daddr->sin_port, 0);
+ rt = find_route_ipv4(&fl4, 0, daddr->sin_addr.s_addr, 0, daddr->sin_port, 0);
if (!rt) {
pr_info("no route to ipv4 0x%x, port %u.\n",
daddr->sin_addr.s_addr, daddr->sin_port);
@@ -490,21 +494,26 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
goto err_out;
}
dst = &rt->dst;
- ndev = dst->neighbour->dev;
+ n = dst_neigh_lookup(dst, &daddr->sin_addr.s_addr);
+ if (!n) {
+ err = -ENODEV;
+ goto rel_rt;
+ }
+ ndev = n->dev;
if (rt->rt_flags & (RTCF_MULTICAST | RTCF_BROADCAST)) {
pr_info("multi-cast route %pI4, port %u, dev %s.\n",
&daddr->sin_addr.s_addr, ntohs(daddr->sin_port),
ndev->name);
err = -ENETUNREACH;
- goto rel_rt;
+ goto rel_neigh;
}
if (ndev->flags & IFF_LOOPBACK) {
ndev = ip_dev_find(&init_net, daddr->sin_addr.s_addr);
mtu = ndev->mtu;
pr_info("rt dev %s, loopback -> %s, mtu %u.\n",
- dst->neighbour->dev->name, ndev->name, mtu);
+ n->dev->name, ndev->name, mtu);
}
cdev = cxgbi_device_find_by_netdev(ndev, &port);
@@ -512,7 +521,7 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
pr_info("dst %pI4, %s, NOT cxgbi device.\n",
&daddr->sin_addr.s_addr, ndev->name);
err = -ENETUNREACH;
- goto rel_rt;
+ goto rel_neigh;
}
log_debug(1 << CXGBI_DBG_SOCK,
"route to %pI4 :%u, ndev p#%d,%s, cdev 0x%p.\n",
@@ -522,7 +531,7 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
csk = cxgbi_sock_create(cdev);
if (!csk) {
err = -ENOMEM;
- goto rel_rt;
+ goto rel_neigh;
}
csk->cdev = cdev;
csk->port_id = port;
@@ -531,10 +540,14 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
csk->daddr.sin_addr.s_addr = daddr->sin_addr.s_addr;
csk->daddr.sin_port = daddr->sin_port;
csk->daddr.sin_family = daddr->sin_family;
- csk->saddr.sin_addr.s_addr = rt->rt_src;
+ csk->saddr.sin_addr.s_addr = fl4.saddr;
+ neigh_release(n);
return csk;
+rel_neigh:
+ neigh_release(n);
+
rel_rt:
ip_rt_put(rt);
if (csk)
@@ -1785,7 +1798,7 @@ static int sgl_seek_offset(struct scatterlist *sgl, unsigned int sgcnt,
}
static int sgl_read_to_frags(struct scatterlist *sg, unsigned int sgoffset,
- unsigned int dlen, skb_frag_t *frags,
+ unsigned int dlen, struct page_frag *frags,
int frag_max)
{
unsigned int datalen = dlen;
@@ -1812,7 +1825,7 @@ static int sgl_read_to_frags(struct scatterlist *sg, unsigned int sgoffset,
copy = min(datalen, sglen);
if (i && page == frags[i - 1].page &&
sgoffset + sg->offset ==
- frags[i - 1].page_offset + frags[i - 1].size) {
+ frags[i - 1].offset + frags[i - 1].size) {
frags[i - 1].size += copy;
} else {
if (i >= frag_max) {
@@ -1822,7 +1835,7 @@ static int sgl_read_to_frags(struct scatterlist *sg, unsigned int sgoffset,
}
frags[i].page = page;
- frags[i].page_offset = sg->offset + sgoffset;
+ frags[i].offset = sg->offset + sgoffset;
frags[i].size = copy;
i++;
}
@@ -1859,8 +1872,9 @@ int cxgbi_conn_alloc_pdu(struct iscsi_task *task, u8 opcode)
tdata->skb = alloc_skb(cdev->skb_tx_rsvd + headroom, GFP_ATOMIC);
if (!tdata->skb) {
- pr_warn("alloc skb %u+%u, opcode 0x%x failed.\n",
- cdev->skb_tx_rsvd, headroom, opcode);
+ struct cxgbi_sock *csk = cconn->cep->csk;
+ struct net_device *ndev = cdev->ports[csk->port_id];
+ ndev->stats.tx_dropped++;
return -ENOMEM;
}
@@ -1942,16 +1956,15 @@ int cxgbi_conn_init_pdu(struct iscsi_task *task, unsigned int offset,
if (tdata->nr_frags > MAX_SKB_FRAGS ||
(padlen && tdata->nr_frags == MAX_SKB_FRAGS)) {
char *dst = skb->data + task->hdr_len;
- skb_frag_t *frag = tdata->frags;
+ struct page_frag *frag = tdata->frags;
/* data fits in the skb's headroom */
for (i = 0; i < tdata->nr_frags; i++, frag++) {
- char *src = kmap_atomic(frag->page,
- KM_SOFTIRQ0);
+ char *src = kmap_atomic(frag->page);
- memcpy(dst, src+frag->page_offset, frag->size);
+ memcpy(dst, src+frag->offset, frag->size);
dst += frag->size;
- kunmap_atomic(src, KM_SOFTIRQ0);
+ kunmap_atomic(src);
}
if (padlen) {
memset(dst, 0, padlen);
@@ -1960,11 +1973,13 @@ int cxgbi_conn_init_pdu(struct iscsi_task *task, unsigned int offset,
skb_put(skb, count + padlen);
} else {
/* data fit into frag_list */
- for (i = 0; i < tdata->nr_frags; i++)
- get_page(tdata->frags[i].page);
-
- memcpy(skb_shinfo(skb)->frags, tdata->frags,
- sizeof(skb_frag_t) * tdata->nr_frags);
+ for (i = 0; i < tdata->nr_frags; i++) {
+ __skb_fill_page_desc(skb, i,
+ tdata->frags[i].page,
+ tdata->frags[i].offset,
+ tdata->frags[i].size);
+ skb_frag_ref(skb, i);
+ }
skb_shinfo(skb)->nr_frags = tdata->nr_frags;
skb->len += count;
skb->data_len += count;
@@ -2136,11 +2151,10 @@ int cxgbi_set_conn_param(struct iscsi_cls_conn *cls_conn,
enum iscsi_param param, char *buf, int buflen)
{
struct iscsi_conn *conn = cls_conn->dd_data;
- struct iscsi_session *session = conn->session;
struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
struct cxgbi_conn *cconn = tcp_conn->dd_data;
struct cxgbi_sock *csk = cconn->cep->csk;
- int value, err = 0;
+ int err;
log_debug(1 << CXGBI_DBG_ISCSI,
"cls_conn 0x%p, param %d, buf(%d) %s.\n",
@@ -2162,15 +2176,7 @@ int cxgbi_set_conn_param(struct iscsi_cls_conn *cls_conn,
conn->datadgst_en, 0);
break;
case ISCSI_PARAM_MAX_R2T:
- sscanf(buf, "%d", &value);
- if (value <= 0 || !is_power_of_2(value))
- return -EINVAL;
- if (session->max_r2t == value)
- break;
- iscsi_tcp_r2tpool_free(session);
- err = iscsi_set_param(cls_conn, param, buf, buflen);
- if (!err && iscsi_tcp_r2tpool_alloc(session))
- return -ENOMEM;
+ return iscsi_tcp_set_max_r2t(conn, buf);
case ISCSI_PARAM_MAX_RECV_DLENGTH:
err = iscsi_set_param(cls_conn, param, buf, buflen);
if (!err)
@@ -2564,6 +2570,62 @@ void cxgbi_iscsi_cleanup(struct iscsi_transport *itp,
}
EXPORT_SYMBOL_GPL(cxgbi_iscsi_cleanup);
+umode_t cxgbi_attr_is_visible(int param_type, int param)
+{
+ switch (param_type) {
+ case ISCSI_HOST_PARAM:
+ switch (param) {
+ case ISCSI_HOST_PARAM_NETDEV_NAME:
+ case ISCSI_HOST_PARAM_HWADDRESS:
+ case ISCSI_HOST_PARAM_IPADDRESS:
+ case ISCSI_HOST_PARAM_INITIATOR_NAME:
+ return S_IRUGO;
+ default:
+ return 0;
+ }
+ case ISCSI_PARAM:
+ switch (param) {
+ case ISCSI_PARAM_MAX_RECV_DLENGTH:
+ case ISCSI_PARAM_MAX_XMIT_DLENGTH:
+ case ISCSI_PARAM_HDRDGST_EN:
+ case ISCSI_PARAM_DATADGST_EN:
+ case ISCSI_PARAM_CONN_ADDRESS:
+ case ISCSI_PARAM_CONN_PORT:
+ case ISCSI_PARAM_EXP_STATSN:
+ case ISCSI_PARAM_PERSISTENT_ADDRESS:
+ case ISCSI_PARAM_PERSISTENT_PORT:
+ case ISCSI_PARAM_PING_TMO:
+ case ISCSI_PARAM_RECV_TMO:
+ case ISCSI_PARAM_INITIAL_R2T_EN:
+ case ISCSI_PARAM_MAX_R2T:
+ case ISCSI_PARAM_IMM_DATA_EN:
+ case ISCSI_PARAM_FIRST_BURST:
+ case ISCSI_PARAM_MAX_BURST:
+ case ISCSI_PARAM_PDU_INORDER_EN:
+ case ISCSI_PARAM_DATASEQ_INORDER_EN:
+ case ISCSI_PARAM_ERL:
+ case ISCSI_PARAM_TARGET_NAME:
+ case ISCSI_PARAM_TPGT:
+ case ISCSI_PARAM_USERNAME:
+ case ISCSI_PARAM_PASSWORD:
+ case ISCSI_PARAM_USERNAME_IN:
+ case ISCSI_PARAM_PASSWORD_IN:
+ case ISCSI_PARAM_FAST_ABORT:
+ case ISCSI_PARAM_ABORT_TMO:
+ case ISCSI_PARAM_LU_RESET_TMO:
+ case ISCSI_PARAM_TGT_RESET_TMO:
+ case ISCSI_PARAM_IFACE_NAME:
+ case ISCSI_PARAM_INITIATOR_NAME:
+ return S_IRUGO;
+ default:
+ return 0;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cxgbi_attr_is_visible);
+
static int __init libcxgbi_init_module(void)
{
sw_tag_idx_bits = (__ilog2_u32(ISCSI_ITT_MASK)) + 1;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-13 08:08:31 +0000