Jon Maloy 7ab412d33b tipc: fix link re-establish failure ... When a link failure is detected locally, the link is reset, the flag link->in_session is set to false, and a RESET_MSG with the 'stopping' bit set is sent to the peer. The purpose of this bit is to inform the peer that this endpoint just is going down, and that the peer should handle the reception of this particular RESET message as a local failure. This forces the peer to accept another RESET or ACTIVATE message from this endpoint before it can re-establish the link. This again is necessary to ensure that link session numbers are properly exchanged before the link comes up again. If a failure is detected locally at the same time at the peer endpoint this will do the same, which is also a correct behavior. However, when receiving such messages, the endpoints will not distinguish between 'stopping' RESETs and ordinary ones when it comes to updating session numbers. Both endpoints will copy the received session number and set their 'in_session' flags to true at the reception, while they are still expecting another RESET from the peer before they can go ahead and re-establish. This is contradictory, since, after applying the validation check referred to below, the 'in_session' flag will cause rejection of all such messages, and the link will never come up again. We now fix this by not only handling received RESET/STOPPING messages as a local failure, but also by omitting to set a new session number and the 'in_session' flag in such cases. Fixes: 7ea817f4e8 ("tipc: check session number before accepting link protocol messages") Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-11-11 10:03:38 -08:00
..
addr.c
addr.h
bcast.c
bcast.h
bearer.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-10-03 21:00:17 -07:00
bearer.h
core.c
core.h
diag.c
discover.c
discover.h
eth_media.c
group.c	tipc: fix info leak from kernel tipc_event	2018-10-18 16:49:53 -07:00
group.h
ib_media.c
Kconfig
link.c	tipc: fix link re-establish failure	2018-11-11 10:03:38 -08:00
link.h	tipc: fix failover problem	2018-09-29 11:45:14 -07:00
Makefile
monitor.c
monitor.h
msg.c	tipc: buffer overflow handling in listener socket	2018-09-29 11:24:22 -07:00
msg.h	tipc: buffer overflow handling in listener socket	2018-09-29 11:24:22 -07:00
name_distr.c	tipc: eliminate message disordering during binding table update	2018-10-22 19:29:12 -07:00
name_distr.h
name_table.c	tipc: eliminate message disordering during binding table update	2018-10-22 19:29:12 -07:00
name_table.h	tipc: eliminate message disordering during binding table update	2018-10-22 19:29:12 -07:00
net.c
net.h
netlink_compat.c	tipc: check return value of __tipc_dump_start()	2018-09-12 13:15:04 -07:00
netlink.c
netlink.h
node.c	tipc: ignore STATE_MSG on wrong link session	2018-10-01 22:35:30 -07:00
node.h	tipc: add SYN bit to connection setup messages	2018-09-29 11:24:22 -07:00
socket.c	Revert "net: simplify sock_poll_wait"	2018-10-23 10:57:06 -07:00
socket.h	tipc: call start and done ops directly in __tipc_nl_compat_dumpit()	2018-09-06 21:49:18 -07:00
subscr.c
subscr.h
sysctl.c
topsrv.c	Merge branch 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2018-11-01 19:58:52 -07:00
topsrv.h
udp_media.c	tipc: support binding to specific ip address when activating UDP bearer	2018-10-15 21:56:56 -07:00
udp_media.h