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author | Jon Paul Maloy <jon.maloy@ericsson.com> | 2015-10-15 18:52:46 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2015-10-16 06:55:23 (GMT) |
commit | c819930090fe3f74c822be765c185b3431360193 (patch) | |
tree | 8f79b62d957d1b0d209cb3a3aa3f2abe163d226a /net/tipc/link.h | |
parent | 282b3a056225b35024246f63feb91d769d714dad (diff) | |
download | linux-c819930090fe3f74c822be765c185b3431360193.tar.xz |
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.h | 1 |
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); |