linux-stable/include/net/sctp
Xin Long eacf078cf4 sctp: send pmtu probe only if packet loss in Search Complete state
This patch is to introduce last_rtx_chunks into sctp_transport to detect
if there's any packet retransmission/loss happened by checking against
asoc's rtx_data_chunks in sctp_transport_pl_send().

If there is, namely, transport->last_rtx_chunks != asoc->rtx_data_chunks,
the pmtu probe will be sent out. Otherwise, increment the pl.raise_count
and return when it's in Search Complete state.

With this patch, if in Search Complete state, which is a long period, it
doesn't need to keep probing the current pmtu unless there's data packet
loss. This will save quite some traffic.

v1->v2:
  - add the missing Fixes tag.

Fixes: 0dac127c05 ("sctp: do black hole detection in search complete state")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 23:06:02 +01:00
..
auth.h sctp: add sctp_auth_init and sctp_auth_free 2019-08-19 18:27:29 -07:00
checksum.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-05-31 10:49:43 -07:00
command.h sctp: add the probe timer in transport for PLPMTUD 2021-06-22 11:28:52 -07:00
constants.h sctp: move 198 addresses from unusable to private scope 2021-07-01 11:47:13 -07:00
sctp.h sctp: process sctp over udp icmp err on sctp side 2021-06-22 11:28:52 -07:00
sm.h sctp: do the basic send and recv for PLPMTUD probe 2021-06-22 11:28:52 -07:00
stream_interleave.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 2019-05-24 17:39:00 +02:00
stream_sched.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 2019-05-24 17:39:00 +02:00
structs.h sctp: send pmtu probe only if packet loss in Search Complete state 2021-07-25 23:06:02 +01:00
tsnmap.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 2019-05-24 17:39:00 +02:00
ulpevent.h sctp: fix typo sctp_ulpevent_nofity_peer_addr_change 2020-05-27 15:08:02 -07:00
ulpqueue.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 2019-05-24 17:39:00 +02:00