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Eric Dumazet 8804b2722d tcp: remove false sharing in tcp_rcv_state_process() 
Last known hot point during SYNFLOOD attack is the clearing
of rx_opt.saw_tstamp in tcp_rcv_state_process()

It is not needed for a listener, so we move it where it matters.

Performance while a SYNFLOOD hits a single listener socket
went from 5 Mpps to 6 Mpps on my test server (24 cores, 8 NIC RX queues)

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
..
6lowpan 6lowpan: iphc: fix handling of link-local compression 2016-04-08 19:28:13 +02:00
9p net/9p: convert to new CQ API 2016-03-10 20:54:09 -05:00
802
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8021q vlan: propagate gso_max_segs 2016-03-17 21:05:01 -04:00
appletalk appletalk: fix erroneous return value 2016-02-18 14:59:34 -05:00
atm net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
ax25 ax25: add link layer header validation function 2016-03-09 22:13:01 -05:00
batman-adv batman-adv: clarify CFG80211 dependency 2016-03-02 13:45:47 -05:00
bluetooth sock: tigthen lockdep checks for sock_owned_by_user 2016-04-13 22:37:20 -04:00
bridge bridge: a netlink notification should be sent when those attributes are changed by ioctl 2016-04-13 22:42:33 -04:00
caif net: caif: fix misleading indentation 2016-03-14 13:09:50 -04:00
can sock: enable timestamping using control messages 2016-04-04 15:50:30 -04:00
ceph mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
core bpf: convert relevant helper args to ARG_PTR_TO_RAW_STACK 2016-04-14 21:40:41 -04:00
dcb net/dcb: make dcbnl.c explicitly non-modular 2015-10-09 07:52:27 -07:00
dccp net: introduce lockdep_is_held and update various places to use it 2016-04-07 16:44:14 -04:00
decnet net: add validation for the socket syscall protocol argument 2015-12-14 16:09:30 -05:00
dns_resolver net: dns_resolver: convert time_t to time64_t 2015-11-18 16:27:46 -05:00
dsa dsa: Rename phys_port_mask to enabled_port_mask 2016-04-13 18:15:23 -04:00
ethernet eth: Pull header from first fragment via eth_get_headlen 2016-02-24 13:58:05 -05:00
hsr net/hsr: fix a warning message 2015-11-23 14:56:15 -05:00
ieee802154 ieee802154: 6lowpan: fix return of netdev notifier 2016-02-23 20:29:40 +01:00
ipv4 tcp: remove false sharing in tcp_rcv_state_process() 2016-04-15 16:45:44 -04:00
ipv6 tcp: do not mess with listener sk_wmem_alloc 2016-04-15 16:45:44 -04:00
ipx
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irda Merge 4.5-rc4 into tty-next 2016-02-14 14:36:04 -08:00
iucv af_iucv: Validate socket address length in iucv_sock_bind() 2016-01-19 14:21:08 -05:00
kcm kcm: Add receive message timeout 2016-03-09 16:36:15 -05:00
key af_key: fix two typos 2015-10-23 03:05:19 -07:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-04-09 17:41:41 -04:00
l3mdev net: l3mdev: address selection should only consider devices in L3 domain 2016-02-26 14:22:26 -05:00
lapb
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llc sock: tigthen lockdep checks for sock_owned_by_user 2016-04-13 22:37:20 -04:00
mac80211 cfg80211: remove enum ieee80211_band 2016-04-12 15:56:15 +02:00
mac802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
mpls GSO: Add GSO type for fixed IPv4 ID 2016-04-14 16:23:40 -04:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2016-04-12 22:34:56 -04:00
netlabel netlabel: do not initialise statics to NULL 2016-03-07 11:08:26 -05:00
netlink rhashtable: accept GFP flags in rhashtable_walk_init 2016-04-05 10:56:32 +02:00
netrom
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nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2016-03-28 15:38:59 -04:00
packet packet: uses kfree_skb() for errors. 2016-04-14 17:50:44 -04:00
phonet sock: struct proto hash function may error 2016-02-11 03:54:14 -05:00
rds RDS: fix congestion map corruption for PAGE_SIZE > 4k 2016-04-07 16:58:28 -04:00
rfkill rfkill: Use switch to demux userspace operations 2016-04-05 10:48:53 +02:00
rose
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rxrpc rxrpc: Create a null security type and get rid of conditional calls 2016-04-11 15:34:41 -04:00
sched qdisc: constify meta_type_ops structures 2016-04-14 00:35:30 -04:00
sctp sctp: add support for RPS and RFS 2016-04-14 21:40:24 -04:00
sunrpc sock: tigthen lockdep checks for sock_owned_by_user 2016-04-13 22:37:20 -04:00
switchdev switchdev: fix typo in comments/doc 2016-03-24 14:51:24 -04:00
tipc tipc: let first message on link be a state message 2016-04-15 16:09:06 -04:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-23 00:09:14 -05:00
vmw_vsock VSOCK: Detach QP check should filter out non matching QPs. 2016-04-06 16:39:09 -04:00
wimax net:wimax: Fix doucble word "the the" in networking.xml 2015-08-09 22:43:52 -07:00
wireless cfg80211: remove enum ieee80211_band 2016-04-12 15:56:15 +02:00
x25
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xfrm xfrm: Fix crash observed during device unregistration and decryption 2016-03-24 14:29:36 -04:00
Kconfig Make DST_CACHE a silent config option 2016-03-21 22:56:38 -04:00
Makefile kcm: Kernel Connection Multiplexor module 2016-03-09 16:36:14 -05:00
compat.c
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socket.c Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-04-14 00:39:15 -04:00
sysctl_net.c net: sysctl: fix a kmemleak warning 2015-10-23 06:22:08 -07:00