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authorVlad Yasevich <vladislav.yasevich@hp.com>2007-10-24 15:59:16 -0400
committerVlad Yasevich <vladislav.yasevich@hp.com>2007-11-07 11:39:27 -0500
commitb6157d8e03e1e780660a328f7183bcbfa4a93a19 (patch)
treecff4da4725b1bb0c5b603dc07204697dd0623ad5 /include/net/sctp/structs.h
parentf3830ccc2ea503ab37d605f6c313d61423ddd94e (diff)
SCTP: Fix difference cases of retransmit.
Commit d0ce92910bc04e107b2f3f2048f07e94f570035d broke several retransmit cases including fast retransmit. The reason is that we should only delay by rto while doing retranmists as a result of a timeout. Retransmit as a result of path mtu discover, fast retransmit, or other evernts that should trigger immidiate retransmissions got broken. Also, since rto is doubled prior to marking of packets elegable for retransmission, we never marked correct chunks anyway. The fix is provide a reason for a given retransmission so that we can mark chunks appropriately and to save the old rto value to do comparisons against. All regressions tests passed with this code. Spotted by Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Diffstat (limited to 'include/net/sctp/structs.h')
-rw-r--r--include/net/sctp/structs.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index ef892e00c833..482c2aab3d67 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -873,10 +873,11 @@ struct sctp_transport {
873 * address list derived from the INIT or INIT ACK chunk, a 873 * address list derived from the INIT or INIT ACK chunk, a
874 * number of data elements needs to be maintained including: 874 * number of data elements needs to be maintained including:
875 */ 875 */
876 __u32 rtt; /* This is the most recent RTT. */
877
878 /* RTO : The current retransmission timeout value. */ 876 /* RTO : The current retransmission timeout value. */
879 unsigned long rto; 877 unsigned long rto;
878 unsigned long last_rto;
879
880 __u32 rtt; /* This is the most recent RTT. */
880 881
881 /* RTTVAR : The current RTT variation. */ 882 /* RTTVAR : The current RTT variation. */
882 __u32 rttvar; 883 __u32 rttvar;