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e6441bae32
linux/net
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Jon Paul Maloy e6441bae32 tipc: fix bug in link failover handling 
In commit c637c10355
("tipc: resolve race problem at unicast message reception") we
introduced a new mechanism for delivering buffers upwards from link
to socket layer.

That code contains a bug in how we handle the new link input queue
during failover. When a link is reset, some of its users may be blocked
because of congestion, and in order to resolve this, we add any pending
wakeup pseudo messages to the link's input queue, and deliver them to
the socket. This misses the case where the other, remaining link also
may have congested users. Currently, the owner node's reference to the
remaining link's input queue is unconditionally overwritten by the
reset link's input queue. This has the effect that wakeup events from
the remaining link may be unduely delayed (but not lost) for a
potentially long period.

We fix this by adding the pending events from the reset link to the
input queue that is currently referenced by the node, whichever one
it is.

This commit should be applied to both net and net-next.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-09 16:20:41 -04:00
..
6lowpan net/6lowpan: Remove FSF address from GPL statement. 2014-12-05 12:43:04 +01:00
9p virtio/9p: verify device has config space 2015-01-21 16:28:45 +10:30
802 net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
8021q vlan: advertise link netns via netlink 2015-01-23 17:51:15 -08:00
appletalk new helper: memcpy_from_msg() 2014-11-24 04:28:48 -05:00
atm put iov_iter into msghdr 2014-12-09 16:29:03 -05:00
ax25 new helper: memcpy_from_msg() 2014-11-24 04:28:48 -05:00
batman-adv batman-adv: Kconfig, Add missing DEBUG_FS dependency 2015-01-07 22:17:11 +01:00
bluetooth Bluetooth: Fix potential NULL dereference 2015-02-03 09:02:12 +01:00
bridge net: bridge: add compile-time assert for cb struct size 2015-03-03 14:07:04 -05:00
caif caif: fix a signedness bug in cfpkt_iterate() 2015-02-20 17:35:14 -05:00
can can: add missing initialisations in CAN related skbuffs 2015-03-09 10:22:24 +01:00
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2015-02-19 14:14:42 -08:00
core net: do not use rcu in rtnl_dump_ifinfo() 2015-03-01 00:07:00 -05:00
dcb dcbnl : Disable software interrupts before taking dcb_lock 2014-11-16 14:50:52 -05:00
dccp net: introduce helper macro for_each_cmsghdr 2014-12-10 22:41:55 -05:00
decnet decnet: Fix obvious o/0 typo 2015-02-23 15:28:50 -05:00
dns_resolver Merge commit 'v3.16' into next 2014-10-01 00:44:04 +10:00
dsa net: dsa: Set valid phy interface type 2015-02-17 10:37:39 -08:00
ethernet net: Add Transparent Ethernet Bridging GRO support. 2015-01-02 15:46:41 -05:00
hsr net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface. 2015-03-01 13:40:23 -05:00
ieee802154 netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
ipv4 ip: fix error queue empty skb handling 2015-03-08 23:01:54 -04:00
ipv6 ip: fix error queue empty skb handling 2015-03-08 23:01:54 -04:00
ipx switch ipxrtr_route_packet() from iovec to msghdr 2014-11-24 04:28:49 -05:00
irda irda: replace current->state by set_current_state() 2015-02-23 17:21:11 -05:00
iucv net: introduce helper macro for_each_cmsghdr 2014-12-10 22:41:55 -05:00
key new helper: memcpy_from_msg() 2014-11-24 04:28:48 -05:00
l2tp netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
lapb lapb: move EXPORT_SYMBOL after functions. 2014-10-24 15:51:42 -04:00
llc net: llc: use correct size for sysctl timeout entries 2015-01-25 00:23:21 -08:00
mac80211 mac80211: Send EAPOL frames at lowest rate 2015-02-26 21:03:06 +01:00
mac802154 mac802154: fix kbuild test robot warning 2015-01-03 01:51:51 +01:00
mpls net: mark some potential candidates __read_mostly 2015-01-30 17:58:39 -08:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2015-03-05 21:51:07 -05:00
netlabel Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2015-02-11 20:25:11 -08:00
netlink rhashtable: remove indirection for grow/shrink decision functions 2015-02-27 16:06:02 -05:00
netrom new helper: memcpy_from_msg() 2014-11-24 04:28:48 -05:00
nfc NFC: nci: Move NFCEE discovery logic 2015-02-04 09:15:18 +01:00
openvswitch openvswitch: Fix serialization of non-masked set actions. 2015-03-03 14:38:57 -05:00
packet net: delete stale packet_mclist entries 2015-03-09 16:17:43 -04:00
phonet phonet netlink: allow multiple messages per skb in route dump 2015-01-19 16:20:17 -05:00
rds rds: rds_cong_queue_updates needs to defer the congestion update transmission 2015-02-11 14:35:44 -08:00
rfkill Last round of updates for net-next: 2015-02-04 14:57:45 -08:00
rose new helper: memcpy_from_msg() 2014-11-24 04:28:48 -05:00
rxrpc ip: fix error queue empty skb handling 2015-03-08 23:01:54 -04:00
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-03 15:30:07 -08:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-02-05 14:33:28 -08:00
sunrpc Merge branch 'for-4.0' of git://linux-nfs.org/~bfields/linux 2015-03-03 15:52:50 -08:00
switchdev Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2015-02-19 10:36:45 -08:00
tipc tipc: fix bug in link failover handling 2015-03-09 16:20:41 -04:00
unix net: remove sock_iocb 2015-01-28 23:15:07 -08:00
vmw_vsock vmci: propagate msghdr all way down to __qp_memcpy_to_queue() 2015-02-04 01:34:14 -05:00
wimax wimax: convert printk to pr_foo() 2014-10-07 20:28:44 -04:00
wireless cfg80211: calls nl80211_exit on error 2015-02-24 11:41:21 +01:00
x25 new helper: memcpy_from_msg() 2014-11-24 04:28:48 -05:00
xfrm netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
compat.c net: compat: Ignore MSG_CMSG_COMPAT in compat_sys_{send, recv}msg 2015-02-23 17:22:05 -05:00
Kconfig kconfig: use bool instead of boolean for type definition attributes 2015-01-07 13:08:04 +01:00
Makefile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-12-16 15:53:03 -08:00
socket.c net: switch sockets to ->read_iter/->write_iter 2015-02-04 01:34:15 -05:00
sysctl_net.c