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Diffstat (limited to 'net/tipc/bearer.c')
-rw-r--r--net/tipc/bearer.c113
1 files changed, 39 insertions, 74 deletions
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index a7a36779b9b..837b7a46788 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -36,19 +36,15 @@
#include "core.h"
#include "config.h"
-#include "dbg.h"
#include "bearer.h"
-#include "link.h"
-#include "port.h"
#include "discover.h"
-#include "bcast.h"
#define MAX_ADDR_STR 32
-static struct media *media_list = NULL;
-static u32 media_count = 0;
+static struct media media_list[MAX_MEDIA];
+static u32 media_count;
-struct bearer *tipc_bearers = NULL;
+struct bearer tipc_bearers[MAX_BEARERS];
/**
* media_name_valid - validate media name
@@ -63,7 +59,7 @@ static int media_name_valid(const char *name)
len = strlen(name);
if ((len + 1) > TIPC_MAX_MEDIA_NAME)
return 0;
- return (strspn(name, tipc_alphabet) == len);
+ return strspn(name, tipc_alphabet) == len;
}
/**
@@ -108,9 +104,11 @@ int tipc_register_media(u32 media_type,
int res = -EINVAL;
write_lock_bh(&tipc_net_lock);
- if (!media_list)
- goto exit;
+ if (tipc_mode != TIPC_NET_MODE) {
+ warn("Media <%s> rejected, not in networked mode yet\n", name);
+ goto exit;
+ }
if (!media_name_valid(name)) {
warn("Media <%s> rejected, illegal name\n", name);
goto exit;
@@ -119,7 +117,7 @@ int tipc_register_media(u32 media_type,
warn("Media <%s> rejected, no broadcast address\n", name);
goto exit;
}
- if ((bearer_priority < TIPC_MIN_LINK_PRI) &&
+ if ((bearer_priority < TIPC_MIN_LINK_PRI) ||
(bearer_priority > TIPC_MAX_LINK_PRI)) {
warn("Media <%s> rejected, illegal priority (%u)\n", name,
bearer_priority);
@@ -165,7 +163,6 @@ int tipc_register_media(u32 media_type,
m_ptr->priority = bearer_priority;
m_ptr->tolerance = link_tolerance;
m_ptr->window = send_window_limit;
- dbg("Media <%s> registered\n", name);
res = 0;
exit:
write_unlock_bh(&tipc_net_lock);
@@ -197,9 +194,8 @@ void tipc_media_addr_printf(struct print_buf *pb, struct tipc_media_addr *a)
unchar *addr = (unchar *)&a->dev_addr;
tipc_printf(pb, "UNKNOWN(%u)", media_type);
- for (i = 0; i < (sizeof(*a) - sizeof(a->type)); i++) {
+ for (i = 0; i < (sizeof(*a) - sizeof(a->type)); i++)
tipc_printf(pb, "-%02x", addr[i]);
- }
}
}
@@ -254,7 +250,8 @@ static int bearer_name_validate(const char *name,
/* ensure all component parts of bearer name are present */
media_name = name_copy;
- if ((if_name = strchr(media_name, ':')) == NULL)
+ if_name = strchr(media_name, ':');
+ if (if_name == NULL)
return 0;
*(if_name++) = 0;
media_len = if_name - media_name;
@@ -286,9 +283,6 @@ static struct bearer *bearer_find(const char *name)
struct bearer *b_ptr;
u32 i;
- if (tipc_mode != TIPC_NET_MODE)
- return NULL;
-
for (i = 0, b_ptr = tipc_bearers; i < MAX_BEARERS; i++, b_ptr++) {
if (b_ptr->active && (!strcmp(b_ptr->publ.name, name)))
return b_ptr;
@@ -465,6 +459,18 @@ int tipc_bearer_resolve_congestion(struct bearer *b_ptr, struct link *l_ptr)
return res;
}
+/**
+ * tipc_bearer_congested - determines if bearer is currently congested
+ */
+
+int tipc_bearer_congested(struct bearer *b_ptr, struct link *l_ptr)
+{
+ if (unlikely(b_ptr->publ.blocked))
+ return 1;
+ if (likely(list_empty(&b_ptr->cong_links)))
+ return 0;
+ return !tipc_bearer_resolve_congestion(b_ptr, l_ptr);
+}
/**
* tipc_enable_bearer - enable bearer with the given name
@@ -491,7 +497,7 @@ int tipc_enable_bearer(const char *name, u32 bcast_scope, u32 priority)
return -EINVAL;
}
if (!tipc_addr_domain_valid(bcast_scope) ||
- !in_scope(bcast_scope, tipc_own_addr)) {
+ !tipc_in_scope(bcast_scope, tipc_own_addr)) {
warn("Bearer <%s> rejected, illegal broadcast scope\n", name);
return -EINVAL;
}
@@ -545,8 +551,6 @@ restart:
}
b_ptr = &tipc_bearers[bearer_id];
- memset(b_ptr, 0, sizeof(struct bearer));
-
strcpy(b_ptr->publ.name, name);
res = m_ptr->enable_bearer(&b_ptr->publ);
if (res) {
@@ -569,7 +573,7 @@ restart:
spin_lock_init(&b_ptr->publ.lock);
write_unlock_bh(&tipc_net_lock);
info("Enabled bearer <%s>, discovery domain %s, priority %u\n",
- name, addr_string_fill(addr_string, bcast_scope), priority);
+ name, tipc_addr_string_fill(addr_string, bcast_scope), priority);
return 0;
failed:
write_unlock_bh(&tipc_net_lock);
@@ -616,90 +620,51 @@ int tipc_block_bearer(const char *name)
* Note: This routine assumes caller holds tipc_net_lock.
*/
-static int bearer_disable(const char *name)
+static void bearer_disable(struct bearer *b_ptr)
{
- struct bearer *b_ptr;
struct link *l_ptr;
struct link *temp_l_ptr;
- b_ptr = bearer_find(name);
- if (!b_ptr) {
- warn("Attempt to disable unknown bearer <%s>\n", name);
- return -EINVAL;
- }
-
- info("Disabling bearer <%s>\n", name);
+ info("Disabling bearer <%s>\n", b_ptr->publ.name);
tipc_disc_stop_link_req(b_ptr->link_req);
spin_lock_bh(&b_ptr->publ.lock);
b_ptr->link_req = NULL;
b_ptr->publ.blocked = 1;
- if (b_ptr->media->disable_bearer) {
- spin_unlock_bh(&b_ptr->publ.lock);
- write_unlock_bh(&tipc_net_lock);
- b_ptr->media->disable_bearer(&b_ptr->publ);
- write_lock_bh(&tipc_net_lock);
- spin_lock_bh(&b_ptr->publ.lock);
- }
+ b_ptr->media->disable_bearer(&b_ptr->publ);
list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) {
tipc_link_delete(l_ptr);
}
spin_unlock_bh(&b_ptr->publ.lock);
memset(b_ptr, 0, sizeof(struct bearer));
- return 0;
}
int tipc_disable_bearer(const char *name)
{
+ struct bearer *b_ptr;
int res;
write_lock_bh(&tipc_net_lock);
- res = bearer_disable(name);
- write_unlock_bh(&tipc_net_lock);
- return res;
-}
-
-
-
-int tipc_bearer_init(void)
-{
- int res;
-
- write_lock_bh(&tipc_net_lock);
- tipc_bearers = kcalloc(MAX_BEARERS, sizeof(struct bearer), GFP_ATOMIC);
- media_list = kcalloc(MAX_MEDIA, sizeof(struct media), GFP_ATOMIC);
- if (tipc_bearers && media_list) {
- res = 0;
+ b_ptr = bearer_find(name);
+ if (b_ptr == NULL) {
+ warn("Attempt to disable unknown bearer <%s>\n", name);
+ res = -EINVAL;
} else {
- kfree(tipc_bearers);
- kfree(media_list);
- tipc_bearers = NULL;
- media_list = NULL;
- res = -ENOMEM;
+ bearer_disable(b_ptr);
+ res = 0;
}
write_unlock_bh(&tipc_net_lock);
return res;
}
+
+
void tipc_bearer_stop(void)
{
u32 i;
- if (!tipc_bearers)
- return;
-
- for (i = 0; i < MAX_BEARERS; i++) {
- if (tipc_bearers[i].active)
- tipc_bearers[i].publ.blocked = 1;
- }
for (i = 0; i < MAX_BEARERS; i++) {
if (tipc_bearers[i].active)
- bearer_disable(tipc_bearers[i].publ.name);
+ bearer_disable(&tipc_bearers[i]);
}
- kfree(tipc_bearers);
- kfree(media_list);
- tipc_bearers = NULL;
- media_list = NULL;
media_count = 0;
}
-
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-01 16:34:13 +0000