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-rw-r--r--net/tipc/bearer.c30
-rw-r--r--net/tipc/discover.c45
-rw-r--r--net/tipc/discover.h8
3 files changed, 42 insertions, 41 deletions
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index f7c29af4ab81..5fcd1c1214fd 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -46,6 +46,8 @@ static u32 media_count;
struct tipc_bearer tipc_bearers[MAX_BEARERS];
+static void bearer_disable(struct tipc_bearer *b_ptr);
+
/**
* media_name_valid - validate media name
*
@@ -518,7 +520,7 @@ int tipc_enable_bearer(const char *name, u32 disc_domain, u32 priority)
if (!m_ptr) {
warn("Bearer <%s> rejected, media <%s> not registered\n", name,
b_name.media_name);
- goto failed;
+ goto exit;
}
if (priority == TIPC_MEDIA_LINK_PRI)
@@ -534,14 +536,14 @@ restart:
}
if (!strcmp(name, tipc_bearers[i].name)) {
warn("Bearer <%s> rejected, already enabled\n", name);
- goto failed;
+ goto exit;
}
if ((tipc_bearers[i].priority == priority) &&
(++with_this_prio > 2)) {
if (priority-- == 0) {
warn("Bearer <%s> rejected, duplicate priority\n",
name);
- goto failed;
+ goto exit;
}
warn("Bearer <%s> priority adjustment required %u->%u\n",
name, priority + 1, priority);
@@ -551,7 +553,7 @@ restart:
if (bearer_id >= MAX_BEARERS) {
warn("Bearer <%s> rejected, bearer limit reached (%u)\n",
name, MAX_BEARERS);
- goto failed;
+ goto exit;
}
b_ptr = &tipc_bearers[bearer_id];
@@ -559,7 +561,7 @@ restart:
res = m_ptr->enable_bearer(b_ptr);
if (res) {
warn("Bearer <%s> rejected, enable failure (%d)\n", name, -res);
- goto failed;
+ goto exit;
}
b_ptr->identity = bearer_id;
@@ -569,14 +571,18 @@ restart:
b_ptr->priority = priority;
INIT_LIST_HEAD(&b_ptr->cong_links);
INIT_LIST_HEAD(&b_ptr->links);
- b_ptr->link_req = tipc_disc_init_link_req(b_ptr, &m_ptr->bcast_addr,
- disc_domain);
spin_lock_init(&b_ptr->lock);
- write_unlock_bh(&tipc_net_lock);
+
+ res = tipc_disc_create(b_ptr, &m_ptr->bcast_addr, disc_domain);
+ if (res) {
+ bearer_disable(b_ptr);
+ warn("Bearer <%s> rejected, discovery object creation failed\n",
+ name);
+ goto exit;
+ }
info("Enabled bearer <%s>, discovery domain %s, priority %u\n",
name, tipc_addr_string_fill(addr_string, disc_domain), priority);
- return 0;
-failed:
+exit:
write_unlock_bh(&tipc_net_lock);
return res;
}
@@ -627,14 +633,14 @@ static void bearer_disable(struct tipc_bearer *b_ptr)
struct link *temp_l_ptr;
info("Disabling bearer <%s>\n", b_ptr->name);
- tipc_disc_stop_link_req(b_ptr->link_req);
spin_lock_bh(&b_ptr->lock);
- b_ptr->link_req = NULL;
b_ptr->blocked = 1;
b_ptr->media->disable_bearer(b_ptr);
list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) {
tipc_link_delete(l_ptr);
}
+ if (b_ptr->link_req)
+ tipc_disc_delete(b_ptr->link_req);
spin_unlock_bh(&b_ptr->lock);
memset(b_ptr, 0, sizeof(struct tipc_bearer));
}
diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index d2163bd99e59..6acf32a9eef8 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -216,22 +216,6 @@ void tipc_disc_recv_msg(struct sk_buff *buf, struct tipc_bearer *b_ptr)
}
/**
- * tipc_disc_stop_link_req - stop sending periodic link setup requests
- * @req: ptr to link request structure
- */
-
-void tipc_disc_stop_link_req(struct link_req *req)
-{
- if (!req)
- return;
-
- k_cancel_timer(&req->timer);
- k_term_timer(&req->timer);
- buf_discard(req->buf);
- kfree(req);
-}
-
-/**
* tipc_disc_update_link_req - update frequency of periodic link setup requests
* @req: ptr to link request structure
*/
@@ -286,28 +270,27 @@ static void disc_timeout(struct link_req *req)
}
/**
- * tipc_disc_init_link_req - start sending periodic link setup requests
+ * tipc_disc_create - create object to send periodic link setup requests
* @b_ptr: ptr to bearer issuing requests
* @dest: destination address for request messages
* @dest_domain: network domain to which links can be established
*
- * Returns pointer to link request structure, or NULL if unable to create.
+ * Returns 0 if successful, otherwise -errno.
*/
-struct link_req *tipc_disc_init_link_req(struct tipc_bearer *b_ptr,
- const struct tipc_media_addr *dest,
- u32 dest_domain)
+int tipc_disc_create(struct tipc_bearer *b_ptr,
+ struct tipc_media_addr *dest, u32 dest_domain)
{
struct link_req *req;
req = kmalloc(sizeof(*req), GFP_ATOMIC);
if (!req)
- return NULL;
+ return -ENOMEM;
req->buf = tipc_disc_init_msg(DSC_REQ_MSG, dest_domain, b_ptr);
if (!req->buf) {
kfree(req);
- return NULL;
+ return -ENOMSG;
}
memcpy(&req->dest, dest, sizeof(*dest));
@@ -316,6 +299,20 @@ struct link_req *tipc_disc_init_link_req(struct tipc_bearer *b_ptr,
req->timer_intv = TIPC_LINK_REQ_INIT;
k_init_timer(&req->timer, (Handler)disc_timeout, (unsigned long)req);
k_start_timer(&req->timer, req->timer_intv);
- return req;
+ b_ptr->link_req = req;
+ return 0;
+}
+
+/**
+ * tipc_disc_delete - destroy object sending periodic link setup requests
+ * @req: ptr to link request structure
+ */
+
+void tipc_disc_delete(struct link_req *req)
+{
+ k_cancel_timer(&req->timer);
+ k_term_timer(&req->timer);
+ buf_discard(req->buf);
+ kfree(req);
}
diff --git a/net/tipc/discover.h b/net/tipc/discover.h
index e48a167e47b2..d6e44e3dcdbc 100644
--- a/net/tipc/discover.h
+++ b/net/tipc/discover.h
@@ -39,12 +39,10 @@
struct link_req;
-struct link_req *tipc_disc_init_link_req(struct tipc_bearer *b_ptr,
- const struct tipc_media_addr *dest,
- u32 dest_domain);
+int tipc_disc_create(struct tipc_bearer *b_ptr, struct tipc_media_addr *dest,
+ u32 dest_domain);
+void tipc_disc_delete(struct link_req *req);
void tipc_disc_update_link_req(struct link_req *req);
-void tipc_disc_stop_link_req(struct link_req *req);
-
void tipc_disc_recv_msg(struct sk_buff *buf, struct tipc_bearer *b_ptr);
#endif
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