kernel_optimize_test/net/sctp
Michele Baldessari 196d675934 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>
2012-12-03 13:32:15 -05:00
..
associola.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
auth.c sctp: fix bogus if statement in sctp_auth_recv_cid() 2012-08-16 13:36:29 -07:00
bind_addr.c sctp: Make sysctl tunables per net 2012-08-14 23:32:16 -07:00
chunk.c sctp: fix -ENOMEM result with invalid user space pointer in sendto() syscall 2012-11-28 11:11:17 -05:00
command.c
debug.c sctp: remove completely unsed EMPTY state 2011-04-20 01:51:03 -07:00
endpointola.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
input.c sctp: fix a typo in prototype of __sctp_rcv_lookup() 2012-10-04 15:53:48 -04:00
inqueue.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
ipv6.c sctp: fix CONFIG_SCTP_DBG_MSG=y null pointer dereference in sctp_v6_get_dst() 2012-11-30 12:21:27 -05:00
Kconfig sctp: Make hmac algorithm selection for cookie generation dynamic 2012-10-26 02:22:18 -04:00
Makefile
objcnt.c sctp: Make the proc files per network namespace. 2012-08-14 23:29:53 -07:00
output.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
outqueue.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
primitive.c sctp: Push struct net down to sctp_chunk_event_lookup 2012-08-14 23:30:37 -07:00
probe.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-10-23 11:47:02 -07:00
proc.c sctp: fix /proc/net/sctp/ memory leak 2012-11-15 13:56:05 -05:00
protocol.c sctp: Make hmac algorithm selection for cookie generation dynamic 2012-10-26 02:22:18 -04:00
sm_make_chunk.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
sm_sideeffect.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
sm_statefuns.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
sm_statetable.c sctp: Make sysctl tunables per net 2012-08-14 23:32:16 -07:00
socket.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
ssnmap.c
sysctl.c sctp: Make hmac algorithm selection for cookie generation dynamic 2012-10-26 02:22:18 -04:00
transport.c sctp: Add support to per-association statistics via a new SCTP_GET_ASSOC_STATS call 2012-12-03 13:32:15 -05:00
tsnmap.c sctp: use bitmap_weight 2012-11-17 22:01:18 -05:00
ulpevent.c netvm: prevent a stream-specific deadlock 2012-07-31 18:42:47 -07:00
ulpqueue.c sctp: Clean up type-punning in sctp_cmd_t union 2012-11-03 14:54:55 -04:00