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authorMax Matveev <makc@redhat.com>2011-08-29 21:02:24 +0000
committerDavid S. Miller <davem@davemloft.net>2011-09-16 17:17:22 -0400
commitd5ccd496601b8776a516d167a6485754575dc38f (patch)
treef5c92cd4b9a20470bd083ab840cf27821ad68de6 /net/sctp/sm_sideeffect.c
parentfb82fd204b6e6c67661bbd37df032edafb2da56e (diff)
sctp: deal with multiple COOKIE_ECHO chunks
Attempt to reduce the number of IP packets emitted in response to single SCTP packet (2e3216cd) introduced a complication - if a packet contains two COOKIE_ECHO chunks and nothing else then SCTP state machine corks the socket while processing first COOKIE_ECHO and then loses the association and forgets to uncork the socket. To deal with the issue add new SCTP command which can be used to set association explictly. Use this new command when processing second COOKIE_ECHO chunk to restore the context for SCTP state machine. Signed-off-by: Max Matveev <makc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sm_sideeffect.c')
-rw-r--r--net/sctp/sm_sideeffect.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 167c880cf8da..76388b083f28 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -1689,6 +1689,11 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
case SCTP_CMD_PURGE_ASCONF_QUEUE:
sctp_asconf_queue_teardown(asoc);
break;
+
+ case SCTP_CMD_SET_ASOC:
+ asoc = cmd->obj.asoc;
+ break;
+
default:
pr_warn("Impossible command: %u, %p\n",
cmd->verb, cmd->obj.ptr);