linux/net/sctp
Xin Long 7fda702f93 sctp: use new rhlist interface on sctp transport rhashtable
Now sctp transport rhashtable uses hash(lport, dport, daddr) as the key
to hash a node to one chain. If in one host thousands of assocs connect
to one server with the same lport and different laddrs (although it's
not a normal case), all the transports would be hashed into the same
chain.

It may cause to keep returning -EBUSY when inserting a new node, as the
chain is too long and sctp inserts a transport node in a loop, which
could even lead to system hangs there.

The new rhlist interface works for this case that there are many nodes
with the same key in one chain. It puts them into a list then makes this
list be as a node of the chain.

This patch is to replace rhashtable_ interface with rhltable_ interface.
Since a chain would not be too long and it would not return -EBUSY with
this fix when inserting a node, the reinsert loop is also removed here.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-16 23:22:17 -05:00
..
associola.c sctp: use new rhlist interface on sctp transport rhashtable 2016-11-16 23:22:17 -05:00
auth.c sctp: use IS_ENABLED() instead of checking for built-in or module 2016-09-10 21:19:11 -07:00
bind_addr.c sctp: fix copying more bytes than expected in sctp_add_bind_addr 2016-03-08 15:04:08 -05:00
chunk.c sctp: remove the old ttl expires policy 2016-10-13 09:44:14 -04:00
debug.c
endpointola.c sctp: add SCTP_PR_SUPPORTED on sctp sockopt 2016-07-11 13:25:38 -07:00
input.c sctp: use new rhlist interface on sctp transport rhashtable 2016-11-16 23:22:17 -05:00
inqueue.c sctp: rename WORD_TRUNC/ROUND macros 2016-09-22 03:13:26 -04:00
ipv6.c sctp: hold transport instead of assoc when lookup assoc in rx path 2016-10-31 16:20:33 -04:00
Kconfig sctp: add the sctp_diag.c file 2016-04-15 17:29:36 -04:00
Makefile sctp: Add GSO support 2016-06-03 19:37:21 -04:00
objcnt.c
offload.c sctp: fix GSO for IPv6 2016-07-16 22:02:09 -07:00
output.c sctp: clean up sctp_packet_transmit 2016-11-02 15:03:13 -04:00
outqueue.c sctp: reuse sent_count to avoid retransmitted chunks for RTT measurements 2016-10-13 09:44:13 -04:00
primitive.c
probe.c net: sctp: Convert log timestamps to be y2038 safe 2016-03-01 17:18:44 -05:00
proc.c net: Suppress the "Comparison to NULL could be written" warnings 2016-09-30 01:50:45 -04:00
protocol.c sctp: use inet_recvmsg to support sctp RFS well 2016-07-25 10:56:28 -07:00
sctp_diag.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-02 22:20:41 -04:00
sm_make_chunk.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-02 22:20:41 -04:00
sm_sideeffect.c sctp: make sctp_outq_flush/tail/uncork return void 2016-09-18 22:02:33 -04:00
sm_statefuns.c sctp: validate chunk len before actually using it 2016-10-29 12:00:10 -04:00
sm_statetable.c
socket.c sctp: use new rhlist interface on sctp transport rhashtable 2016-11-16 23:22:17 -05:00
ssnmap.c
sysctl.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-01-11 23:55:43 -05:00
transport.c sctp: rename WORD_TRUNC/ROUND macros 2016-09-22 03:13:26 -04:00
tsnmap.c
ulpevent.c sctp: rename WORD_TRUNC/ROUND macros 2016-09-22 03:13:26 -04:00
ulpqueue.c sctp: Remove some redundant code 2016-09-19 01:34:01 -04:00