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authorSridhar Samudrala <sri@us.ibm.com>2006-08-22 00:15:33 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 14:55:16 -0700
commitac0b04627269ff16c3c7ab854a65fe6780c6e3e5 (patch)
tree421ea678ea12d1e193b3bbf27fb1410355ba9b47 /net/sctp/outqueue.c
parent72d3b2c970a2d5d2ccb1d1cab4fb76663c4f2e49 (diff)
[SCTP]: Extend /proc/net/sctp/snmp to provide more statistics.
This patch adds more statistics info under /proc/net/sctp/snmp that should be useful for debugging. The additional events that are counted now include timer expirations, retransmits, packet and data chunk discards. The Data chunk discards include all the cases where a data chunk is discarded including high tsn, bad stream, dup tsn and the most useful one(out of receive buffer/rwnd). Also moved the SCTP MIB data structures from the generic include directories to include/sctp/sctp.h. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/outqueue.c')
-rw-r--r--net/sctp/outqueue.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 30b710c54e6..37074a39ecb 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -467,6 +467,7 @@ void sctp_retransmit(struct sctp_outq *q, struct sctp_transport *transport,
switch(reason) {
case SCTP_RTXR_T3_RTX:
+ SCTP_INC_STATS(SCTP_MIB_T3_RETRANSMITS);
sctp_transport_lower_cwnd(transport, SCTP_LOWER_CWND_T3_RTX);
/* Update the retran path if the T3-rtx timer has expired for
* the current retran path.
@@ -475,12 +476,15 @@ void sctp_retransmit(struct sctp_outq *q, struct sctp_transport *transport,
sctp_assoc_update_retran_path(transport->asoc);
break;
case SCTP_RTXR_FAST_RTX:
+ SCTP_INC_STATS(SCTP_MIB_FAST_RETRANSMITS);
sctp_transport_lower_cwnd(transport, SCTP_LOWER_CWND_FAST_RTX);
fast_retransmit = 1;
break;
case SCTP_RTXR_PMTUD:
- default:
+ SCTP_INC_STATS(SCTP_MIB_PMTUD_RETRANSMITS);
break;
+ default:
+ BUG();
}
sctp_retransmit_mark(q, transport, fast_retransmit);