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authorErik Hugne <erik.hugne@ericsson.com>2014-04-24 16:26:46 +0200
committerDavid S. Miller <davem@davemloft.net>2014-04-26 12:13:24 -0400
commita89778d8baf19cd7e728d81121a294a06cedaad1 (patch)
tree0b28a16308baf11df88b2557f0184156655c1cb7 /net/tipc/node.c
parentd42f157b3498a042d9930506d4b55ded5dcb35c0 (diff)
tipc: add support for link state subscriptions
When links are established over a bearer plane, we create a node local publication containing information about the peer node and bearer plane. This allows TIPC applications to use the standard TIPC topology server subscription mechanism to get notifications when a link goes up or down. Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Ying Xue <ying.xue@windriver.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/node.c')
-rw-r--r--net/tipc/node.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/tipc/node.c b/net/tipc/node.c
index be90115cda1a..3b86a74cb31f 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -144,9 +144,11 @@ void tipc_node_stop(void)
void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr)
{
struct tipc_link **active = &n_ptr->active_links[0];
+ u32 addr = n_ptr->addr;
n_ptr->working_links++;
-
+ tipc_nametbl_publish(TIPC_LINK_STATE, addr, addr, TIPC_NODE_SCOPE,
+ l_ptr->bearer_id, addr);
pr_info("Established link <%s> on network plane %c\n",
l_ptr->name, l_ptr->net_plane);
@@ -203,8 +205,10 @@ static void node_select_active_links(struct tipc_node *n_ptr)
void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr)
{
struct tipc_link **active;
+ u32 addr = n_ptr->addr;
n_ptr->working_links--;
+ tipc_nametbl_withdraw(TIPC_LINK_STATE, addr, l_ptr->bearer_id, addr);
if (!tipc_link_is_active(l_ptr)) {
pr_info("Lost standby link <%s> on network plane %c\n",