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| author | Michele Baldessari <michele@acksyn.org> | 2012-12-01 04:49:42 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-12-03 13:32:15 -0500 |
| commit | 196d67593439b03088913227093e374235596e33 (patch) | |
| tree | d8d1580673e3cf878d6db230bf86b71187bf3550 /net/sctp/output.c | |
| parent | 96070ae4d08eefe62ac534904ce21a01e1a5c9c4 (diff) | |
| download | linux-196d67593439b03088913227093e374235596e33.tar.gz | |
sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call
The current SCTP stack is lacking a mechanism to have per association statistics. This is an implementation modeled after OpenSolaris' SCTP_GET_ASSOC_STATS. Userspace part will follow on lksctp if/when there is a general ACK on this. V4: - Move ipackets++ before q->immediate.func() for consistency reasons - Move sctp_max_rto() at the end of sctp_transport_update_rto() to avoid returning bogus RTO values - return asoc->rto_min when max_obs_rto value has not changed V3: - Increase ictrlchunks in sctp_assoc_bh_rcv() as well - Move ipackets++ to sctp_inq_push() - return 0 when no rto updates took place since the last call V2: - Implement partial retrieval of stat struct to cope for future expansion - Kill the rtxpackets counter as it cannot be precise anyway - Rename outseqtsns to outofseqtsns to make it clearer that these are out of sequence unexpected TSNs - Move asoc->ipackets++ under a lock to avoid potential miscounts - Fold asoc->opackets++ into the already existing asoc check - Kill unneeded (q->asoc) test when increasing rtxchunks - Do not count octrlchunks if sending failed (SCTP_XMIT_OK != 0) - Don't count SHUTDOWNs as SACKs - Move SCTP_GET_ASSOC_STATS to the private space API - Adjust the len check in sctp_getsockopt_assoc_stats() to allow for future struct growth - Move association statistics in their own struct - Update idupchunks when we send a SACK with dup TSNs - return min_rto in max_rto when RTO has not changed. Also return the transport when max_rto last changed. Signed-off: Michele Baldessari <michele@acksyn.org> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/output.c')
| -rw-r--r-- | net/sctp/output.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/net/sctp/output.c b/net/sctp/output.c index 4e90188bf489..f5200a2ad852 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -311,6 +311,8 @@ static sctp_xmit_t __sctp_packet_append_chunk(struct sctp_packet *packet, case SCTP_CID_SACK: packet->has_sack = 1; + if (chunk->asoc) + chunk->asoc->stats.osacks++; break; case SCTP_CID_AUTH: @@ -584,11 +586,13 @@ int sctp_packet_transmit(struct sctp_packet *packet) */ /* Dump that on IP! */ - if (asoc && asoc->peer.last_sent_to != tp) { - /* Considering the multiple CPU scenario, this is a - * "correcter" place for last_sent_to. --xguo - */ - asoc->peer.last_sent_to = tp; + if (asoc) { + asoc->stats.opackets++; + if (asoc->peer.last_sent_to != tp) + /* Considering the multiple CPU scenario, this is a + * "correcter" place for last_sent_to. --xguo + */ + asoc->peer.last_sent_to = tp; } if (has_data) { |