Eric Dumazet 3b24d854cb tcp/dccp: do not touch listener sk_refcnt under synflood ... When a SYNFLOOD targets a non SO_REUSEPORT listener, multiple cpus contend on sk->sk_refcnt and sk->sk_wmem_alloc changes. By letting listeners use SOCK_RCU_FREE infrastructure, we can relax TCP_LISTEN lookup rules and avoid touching sk_refcnt Note that we still use SLAB_DESTROY_BY_RCU rules for other sockets, only listeners are impacted by this change. Peak performance under SYNFLOOD is increased by ~33% : On my test machine, I could process 3.2 Mpps instead of 2.4 Mpps Most consuming functions are now skb_set_owner_w() and sock_wfree() contending on sk->sk_wmem_alloc when cooking SYNACK and freeing them. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-04-04 22:11:20 -04:00
..
6lowpan	6lowpan: iphc: fix SAM/DAM bit comment	2016-03-10 19:51:29 +01:00
9p	net/9p: convert to new CQ API	2016-03-10 20:54:09 -05:00
802	…
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	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-03-19 10:05:34 -07:00
bridge	bridge: Allow set bridge ageing time when switchdev disabled	2016-03-30 15:38:13 -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	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2016-03-26 15:53:16 -07:00
core	net: add SOCK_RCU_FREE socket flag	2016-04-04 22:11:19 -04:00
dcb	net/dcb: make dcbnl.c explicitly non-modular	2015-10-09 07:52:27 -07:00
dccp	tcp/dccp: do not touch listener sk_refcnt under synflood	2016-04-04 22:11:20 -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	net: dsa: refine netdev event notifier	2016-03-14 16:05:32 -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/dccp: do not touch listener sk_refcnt under synflood	2016-04-04 22:11:20 -04:00
ipv6	tcp/dccp: do not touch listener sk_refcnt under synflood	2016-04-04 22:11:20 -04:00
ipx	…
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	sock: enable timestamping using control messages	2016-04-04 15:50:30 -04:00
l3mdev	net: l3mdev: address selection should only consider devices in L3 domain	2016-02-26 14:22:26 -05:00
lapb	…
llc	af_llc: fix types on llc_ui_wait_for_conn	2016-02-17 16:12:13 -05:00
mac80211	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-03-08 12:34:12 -05:00
mac802154	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-03-19 10:05:34 -07:00
mpls	mpls: autoload lwt module	2016-02-21 22:00:28 -05:00
netfilter	tcp/dccp: do not touch listener sk_refcnt under synflood	2016-04-04 22:11:20 -04:00
netlabel	netlabel: do not initialise statics to NULL	2016-03-07 11:08:26 -05:00
netlink	netlink: add support for NIC driver ioctls	2016-03-22 15:45:44 -04:00
netrom	…
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	sock: enable timestamping using control messages	2016-04-04 15:50:30 -04:00
phonet	sock: struct proto hash function may error	2016-02-11 03:54:14 -05:00
rds	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-03-19 10:05:34 -07:00
rfkill	Here's another round of updates for -next:	2016-03-01 17:03:27 -05:00
rose	…
rxrpc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-03-19 10:05:34 -07:00
sched	cls_bpf: reset class and reuse major in da	2016-03-18 19:35:21 -04:00
sctp	sctp: really allow using GFP_KERNEL on sctp_packet_transmit	2016-03-30 15:41:22 -04:00
sunrpc	Various bugfixes, a RDMA update from Chuck Lever, and support for a new	2016-03-24 10:41:00 -07:00
switchdev	switchdev: fix typo in comments/doc	2016-03-24 14:51:24 -04:00
tipc	tipc: make sure IPv6 header fits in skb headroom	2016-03-14 12:23:12 -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	AF_VSOCK: Shrink the area influenced by prepare_to_wait	2016-03-22 16:18:41 -04:00
wimax	net:wimax: Fix doucble word "the the" in networking.xml	2015-08-09 22:43:52 -07:00
wireless	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-03-19 10:05:34 -07:00
x25	…
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	…
socket.c	sock: enable timestamping using control messages	2016-04-04 15:50:30 -04:00
sysctl_net.c	net: sysctl: fix a kmemleak warning	2015-10-23 06:22:08 -07:00