Paolo Abeni 2276f58ac5 udp: use a separate rx queue for packet reception ... under udp flood the sk_receive_queue spinlock is heavily contended. This patch try to reduce the contention on such lock adding a second receive queue to the udp sockets; recvmsg() looks first in such queue and, only if empty, tries to fetch the data from sk_receive_queue. The latter is spliced into the newly added queue every time the receive path has to acquire the sk_receive_queue lock. The accounting of forward allocated memory is still protected with the sk_receive_queue lock, so udp_rmem_release() needs to acquire both locks when the forward deficit is flushed. On specific scenarios we can end up acquiring and releasing the sk_receive_queue lock multiple times; that will be covered by the next patch Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-05-16 15:41:29 -04:00
..
6lowpan	6lowpan: Don't set IFF_NO_QUEUE	2017-04-12 22:02:40 +02:00
9p	xen: fixes and featrues for 4.12	2017-05-04 11:37:09 -07:00
802
8021q	vlan: Keep NETIF_F_HW_CSUM similar to other software devices	2017-05-08 14:39:19 -04:00
appletalk	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
atm	neighbour: fix nlmsg_pid in notifications	2017-03-22 10:48:49 -07:00
ax25	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
batman-adv	This feature/cleanup patchset includes the following patches:	2017-04-06 14:37:50 -07:00
bluetooth	net: socket: mark socket protocol handler structs as const	2017-05-16 11:54:07 -04:00
bpf	bpf: Align packet data properly in program testing framework.	2017-05-02 11:46:28 -04:00
bridge	bridge: netlink: account for IFLA_BRPORT_{B, M}CAST_FLOOD size and policy	2017-05-05 11:21:03 -04:00
caif	net: socket: mark socket protocol handler structs as const	2017-05-16 11:54:07 -04:00
can	can: fix CAN BCM build with CONFIG_PROC_FS disabled	2017-04-27 09:34:13 +02:00
ceph	The two main items are support for disabling automatic rbd exclusive	2017-05-10 08:42:33 -07:00
core	net/sock: factor out dequeue/peek with offset code	2017-05-16 15:41:29 -04:00
dcb	net: rtnetlink: plumb extended ack to doit function	2017-04-17 15:35:38 -04:00
dccp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-05-15 15:50:49 -07:00
decnet	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-05-09 15:42:31 -07:00
dns_resolver	Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-03-03 10:16:38 -08:00
dsa	net: dsa: Remove redundant NULL dst check	2017-04-21 10:41:24 -04:00
ethernet	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2017-02-16 21:25:49 -05:00
hsr	netlink: extended ACK reporting	2017-04-13 13:58:20 -04:00
ieee802154	netlink: pass extended ACK struct where available	2017-04-13 13:58:22 -04:00
ife	net: Introduce ife encapsulation module	2017-02-03 15:16:45 -05:00
ipv4	udp: use a separate rx queue for packet reception	2017-05-16 15:41:29 -04:00
ipv6	udp: use a separate rx queue for packet reception	2017-05-16 15:41:29 -04:00
ipx	ipx: call ipxitf_put() in ioctl error path	2017-05-02 15:34:53 -04:00
irda	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
iucv	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
kcm	net: socket: mark socket protocol handler structs as const	2017-05-16 11:54:07 -04:00
key	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-21 20:23:53 -07:00
l2tp	l2tp: remove useless device duplication test in l2tp_eth_create()	2017-04-27 16:32:13 -04:00
l3mdev
lapb
llc	Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu	2017-04-23 11:12:44 +02:00
mac80211	mac80211: fix IBSS presp allocation size	2017-05-08 11:25:04 +02:00
mac802154	drivers: add explicit interrupt.h includes	2017-03-30 11:05:34 -07:00
mpls	treewide: use kv[mz]alloc* rather than opencoded variants	2017-05-08 17:15:13 -07:00
ncsi
netfilter	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-10 10:30:46 -07:00
netlabel	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
netlink	netlink: pass extended ACK struct where available	2017-04-13 13:58:22 -04:00
netrom	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
nfc	net: socket: mark socket protocol handler structs as const	2017-05-16 11:54:07 -04:00
openvswitch	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf	2017-05-03 10:11:26 -04:00
packet	net/packet: fix missing net_device reference release	2017-05-15 14:22:12 -04:00
phonet	net: rtnetlink: plumb extended ack to doit function	2017-04-17 15:35:38 -04:00
psample
qrtr	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-21 20:23:53 -07:00
rds	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
rfkill
rose	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
rxrpc	rxrpc: Trace client call connection	2017-04-06 11:10:41 +01:00
sched	net: sched: optimize class dumps	2017-05-11 21:37:40 -04:00
sctp	sctp: fix src address selection if using secondary addresses for ipv6	2017-05-12 10:50:32 -04:00
smc	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-10 10:30:46 -07:00
strparser	strparser: destroy workqueue on module exit	2017-03-03 20:43:26 -08:00
sunrpc	Another RDMA update from Chuck Lever, and a bunch of miscellaneous	2017-05-10 13:29:23 -07:00
switchdev	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
tipc	tipc: make macro tipc_wait_for_cond() smp safe	2017-05-11 22:19:30 -04:00
unix	af_unix: Use designated initializers	2017-04-06 12:43:04 -07:00
vmw_vsock	virtio: fixes, cleanups, performance	2017-05-10 11:33:08 -07:00
wimax
wireless	nl80211: correctly validate MU-MIMO groups	2017-05-08 11:24:34 +02:00
x25	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
xfrm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
compat.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-02-22 10:15:09 -08:00
Kconfig	bpf: make jited programs visible in traces	2017-02-17 13:40:05 -05:00
Makefile	bpf: introduce BPF_PROG_TEST_RUN command	2017-04-01 12:45:57 -07:00
socket.c	l2tp: device MTU setup, tunnel socket needs a lock	2017-04-17 13:01:48 -04:00
sysctl_net.c	sysctl: Remove dead register_sysctl_root	2017-04-16 23:42:49 -05:00