Eric Dumazet b3d051477c tcp: do not mess with listener sk_wmem_alloc ... When removing sk_refcnt manipulation on synflood, I missed that using skb_set_owner_w() was racy, if sk->sk_wmem_alloc had already transitioned to 0. We should hold sk_refcnt instead, but this is a big deal under attack. (Doing so increase performance from 3.2 Mpps to 3.8 Mpps only) In this patch, I chose to not attach a socket to syncookies skb. Performance is now 5 Mpps instead of 3.2 Mpps. Following patch will remove last known false sharing in tcp_rcv_state_process() Fixes: 3b24d854cb ("tcp/dccp: do not touch listener sk_refcnt under synflood") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-04-15 16:45:44 -04:00
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acpi
asm-generic
clocksource
crypto
drm
dt-bindings
keys
kvm
linux	bpf, verifier: add ARG_PTR_TO_RAW_STACK type	2016-04-14 21:40:41 -04:00
math-emu
media
memory
misc
net	tcp: do not mess with listener sk_wmem_alloc	2016-04-15 16:45:44 -04:00
pcmcia
ras
rdma
rxrpc	rxrpc: Static arrays of strings should be const char *const[]	2016-04-11 15:34:40 -04:00
scsi
soc
sound
target
trace	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-04-09 17:41:41 -04:00
uapi	devlink: implement shared buffer occupancy monitoring interface	2016-04-14 16:22:03 -04:00
video
xen
Kbuild