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authorJon Paul Maloy <jon.maloy@ericsson.com>2015-10-15 14:52:46 -0400
committerDavid S. Miller <davem@davemloft.net>2015-10-15 23:55:23 -0700
commitc819930090fe3f74c822be765c185b3431360193 (patch)
tree8f79b62d957d1b0d209cb3a3aa3f2abe163d226a /net/tipc/link.h
parent282b3a056225b35024246f63feb91d769d714dad (diff)
downloadop-kernel-dev-c819930090fe3f74c822be765c185b3431360193.zip
op-kernel-dev-c819930090fe3f74c822be765c185b3431360193.tar.gz
tipc: update node FSM when peer RESET message is received
The change made in the previous commit revealed a small flaw in the way the node FSM is updated. When the function tipc_node_link_down() is called for the last link to a node, we should check whether this was caused by a local reset or by a received RESET message from the peer. In the latter case, we can directly issue a PEER_LOST_CONTACT_EVT to the node FSM, so that it is ready to re-establish contact. If this is not done, the peer node will sometimes have to go through a second establish cycle before the link becomes stable. We fix this in this commit by conditionally issuing the mentioned event in the function tipc_node_link_down(). We also move LINK_RESET FSM even away from the link_reset() function and into the caller function, partially because it is easier to follow the code when state changes are gathered at a limited number of locations, partially because there will be cases in future commits where we don't want the link to go RESET mode when link_reset() is called. Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/link.h')
-rw-r--r--net/tipc/link.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/tipc/link.h b/net/tipc/link.h
index 5872f09..0201212 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -217,6 +217,7 @@ void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
int tipc_link_fsm_evt(struct tipc_link *l, int evt);
void tipc_link_reset_fragments(struct tipc_link *l_ptr);
bool tipc_link_is_up(struct tipc_link *l);
+bool tipc_link_peer_is_down(struct tipc_link *l);
bool tipc_link_is_reset(struct tipc_link *l);
bool tipc_link_is_establishing(struct tipc_link *l);
bool tipc_link_is_synching(struct tipc_link *l);
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