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Eric Dumazet fc2ab6e8f4 net-gro: reset skb->truesize in napi_reuse_skb() 
[ Upstream commit e33d0ba804 ]

Recycling skb always had been very tough...

This time it appears GRO layer can accumulate skb->truesize
adjustments made by drivers when they attach a fragment to skb.

skb_gro_receive() can only subtract from skb->truesize the used part
of a fragment.

I spotted this problem seeing TcpExtPruneCalled and
TcpExtTCPRcvCollapsed that were unexpected with a recent kernel, where
TCP receive window should be sized properly to accept traffic coming
from a driver not overshooting skb->truesize.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2014-05-31 13:20:39 -07:00
..
Makefile net: netprio: rename config to be more consistent with cgroup configs 2014-01-03 23:41:42 +01:00
datagram.c net, datagram: fix the incorrect comment in zerocopy_sg_from_iovec() 2013-10-29 00:19:04 -04:00
dev.c net-gro: reset skb->truesize in napi_reuse_skb() 2014-05-31 13:20:39 -07:00
dev_addr_lists.c net: Correctly sync addresses from multiple sources to single device 2014-01-23 13:06:34 -08:00
dev_ioctl.c net_tstamp: Add SIOCGHWTSTAMP ioctl to match SIOCSHWTSTAMP 2013-11-19 19:07:21 +00:00
drop_monitor.c net: drop_monitor: fix the value of maxattr 2013-12-09 21:10:38 -05:00
dst.c net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
ethtool.c net: Add layer 2 hardware acceleration operations for macvlan devices 2013-11-07 19:11:41 -05:00
fib_rules.c net: fix 'ip rule' iif/oif device rename 2014-02-09 19:02:52 -08:00
filter.c filter: prevent nla extensions to peek beyond the end of the message 2014-05-31 13:20:33 -07:00
flow.c net: delete __cpuinit usage from all net files 2013-07-14 19:36:58 -04:00
flow_dissector.c netdevice: move netdev_cap_txqueue for shared usage to header 2014-02-17 00:36:34 -05:00
gen_estimator.c net_sched: add 64bit rate estimators 2013-06-11 02:51:03 -07:00
gen_stats.c net_sched: add 64bit rate estimators 2013-06-11 02:51:03 -07:00
iovec.c net: rework recvmsg handler msg_name and msg_namelen logic 2013-11-20 21:52:30 -05:00
link_watch.c net: make all team port device link events urgent 2013-06-13 02:31:41 -07:00
neighbour.c neigh: set nud_state to NUD_INCOMPLETE when probing router reachability 2014-05-31 13:20:37 -07:00
net-procfs.c rps: selective flow shedding during softnet overflow 2013-05-20 13:48:04 -07:00
net-sysfs.c net: fix "queues" uevent between network namespaces 2014-01-19 20:02:02 -08:00
net-sysfs.h net: netdev_kobject_init: annotate with __init 2014-01-05 20:27:54 -05:00
net-traces.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
net_namespace.c rtnetlink: wait for unregistering devices in rtnl_link_unregister() 2014-05-31 13:20:38 -07:00
netclassid_cgroup.c net: net_cls: move cgroupfs classid handling into core 2014-01-03 23:41:41 +01:00
netevent.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
netpoll.c netpoll: fix the skb check in pkt_is_ns 2014-03-24 15:08:40 -04:00
netprio_cgroup.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
pktgen.c pktgen: Use ether_addr_copy 2014-01-21 18:13:05 -08:00
request_sock.c tcp: fix a panic on UP machines in reqsk_fastopen_remove 2013-01-14 18:10:05 -05:00
rtnetlink.c rtnetlink: wait for unregistering devices in rtnl_link_unregister() 2014-05-31 13:20:38 -07:00
scm.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2013-09-07 14:35:32 -07:00
secure_seq.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-10-23 16:49:34 -04:00
skbuff.c net: gro: make sure skb->cb[] initial content has not to be zero 2014-05-31 13:20:38 -07:00
sock.c tcp: tcp_release_cb() should release socket ownership 2014-03-11 16:45:59 -04:00
sock_diag.c net: Fix ns_capable check in sock_diag_put_filterinfo 2014-05-31 13:20:34 -07:00
stream.c net: replace macros net_random and net_srandom with direct calls to prandom 2014-01-14 15:15:25 -08:00
sysctl_net_core.c rps: NUMA flow limit allocations 2013-12-19 19:00:07 -05:00
timestamping.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
user_dma.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
utils.c net: avoid dependency of net_get_random_once on nop patching 2014-05-31 13:20:38 -07:00