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Eric Dumazet 71cea17ed3 tcp: md5: remove spinlock usage in fast path 
TCP md5 code uses per cpu variables but protects access to them with
a shared spinlock, which is a contention point.

[ tcp_md5sig_pool_lock is locked twice per incoming packet ]

Makes things much simpler, by allocating crypto structures once, first
time a socket needs md5 keys, and not deallocating them as they are
really small.

Next step would be to allow crypto allocations being done in a NUMA
aware way.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-20 14:00:42 -07:00
..
9p Lots of virtio work which wasn't quite ready for last merge window. Plus 2013-05-02 14:14:04 -07:00
802 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
8021q net: vlan,ethtool: netdev_features_t is more than 32 bit 2013-05-02 13:58:12 -04:00
appletalk appletalk: info leak in ->getname() 2013-04-25 01:47:58 -04:00
atm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
ax25
batman-adv batman-adv: reorder clean up routine in order to avoid race conditions 2013-05-09 12:39:45 +02:00
bluetooth Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
bridge bridge: fix race with topology change timer 2013-05-03 16:08:58 -04:00
caif caif: Remove bouncing address for Daniel Martensson 2013-04-23 13:25:51 -04:00
can Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
ceph libceph: use slab cache for osd client requests 2013-05-02 11:58:41 -05:00
core rps: selective flow shedding during softnet overflow 2013-05-20 13:48:04 -07:00
dcb
dccp
decnet
dns_resolver
dsa
ethernet
ieee802154
ipv4 tcp: md5: remove spinlock usage in fast path 2013-05-20 14:00:42 -07:00
ipv6 ipv6: add support of peer address 2013-05-19 15:09:26 -07:00
ipx
irda Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
iucv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
key
l2tp
lapb
llc
mac80211 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2013-04-24 10:54:20 -04:00
mac802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-30 03:55:20 -04:00
netfilter Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
netlabel
netlink netlink: kconfig: move mmap i/o into netlink kconfig 2013-05-01 15:02:42 -04:00
netrom netrom: info leak in ->getname() 2013-04-25 01:47:58 -04:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-30 03:55:20 -04:00
openvswitch openvswitch: Remove unneeded ovs_netdev_get_ifindex() 2013-04-30 00:19:11 -04:00
packet packet: tpacket_v3: do not trigger bug() on wrong header status 2013-05-03 16:10:33 -04:00
phonet
rds
rfkill Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2013-04-22 14:58:14 -04:00
rose
rxrpc
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
sunrpc Merge branch 'for-3.10' of git://linux-nfs.org/~bfields/linux 2013-05-10 09:28:55 -07:00
tipc tipc: potential divide by zero in tipc_link_recv_fragment() 2013-05-06 16:16:52 -04:00
unix af_unix: fix a fatal race with bit fields 2013-05-01 15:13:49 -04:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-30 03:55:20 -04:00
wimax
wireless Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
x25 x25: use proc_remove_subtree() 2013-04-09 14:13:35 -04:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2013-05-02 14:53:12 -07:00
compat.c
Kconfig rps: selective flow shedding during softnet overflow 2013-05-20 13:48:04 -07:00
Makefile
nonet.c
socket.c Merge git://git.infradead.org/users/eparis/audit 2013-05-11 14:29:11 -07:00
sysctl_net.c