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dlm: keep listening connection alive with sctp mode 

The connection struct with nodeid 0 is the listening socket,
not a connection to another node.  The sctp resend function
was not checking that the nodeid was valid (non-zero), so it
would mistakenly get and resend on the listening connection
when nodeid was zero.

Signed-off-by: Lidong Zhong <lzhong@suse.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Lidong Zhong 2014-06-12 10:26:14 -05:00 committed by David Teigland
parent 5c02c392cd
commit 883854c545
1 changed files with 5 additions and 0 deletions
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5
fs/dlm/lowcomms.c
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@ -617,6 +617,11 @@ static void retry_failed_sctp_send(struct connection *recv_con,
int nodeid = sn_send_failed->ssf_info.sinfo_ppid;
log_print("Retry sending %d bytes to node id %d", len, nodeid);
if (!nodeid) {
log_print("Shouldn't resend data via listening connection.");
return;
}
con = nodeid2con(nodeid, 0);
if (!con) {