Eric Dumazet c377411f24 net: sk_add_backlog() take rmem_alloc into account ... Current socket backlog limit is not enough to really stop DDOS attacks, because user thread spend many time to process a full backlog each round, and user might crazy spin on socket lock. We should add backlog size and receive_queue size (aka rmem_alloc) to pace writers, and let user run without being slow down too much. Introduce a sk_rcvqueues_full() helper, to avoid taking socket lock in stress situations. Under huge stress from a multiqueue/RPS enabled NIC, a single flow udp receiver can now process ~200.000 pps (instead of ~100 pps before the patch) on a 8 core machine. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2010-04-27 15:13:20 -07:00
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associola.c	sctp: prevent too-fast association id reuse	2009-11-23 15:54:01 -05:00
auth.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
bind_addr.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
chunk.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
command.c	[SCTP]: Remove sctp_add_cmd_sf wrapper bloat	2008-03-27 17:54:29 -07:00
debug.c	net: mark read-only arrays as const	2009-08-05 10:42:58 -07:00
endpointola.c	net: fix sctp breakage	2009-03-18 19:12:42 -07:00
input.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
inqueue.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ipv6.c	net: replace ipfragok with skb->local_df	2010-04-15 23:36:37 -07:00
Kconfig	sctp: Don't abort initialization when CONFIG_PROC_FS=n	2008-07-18 23:03:44 -07:00
Makefile	sctp: Don't abort initialization when CONFIG_PROC_FS=n	2008-07-18 23:03:44 -07:00
objcnt.c	[NET]: Fix heavy stack usage in seq_file output routines.	2008-04-24 01:02:16 -07:00
output.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
outqueue.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
primitive.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
proc.c	percpu: add __percpu sparse annotations to net	2010-02-16 23:05:38 -08:00
protocol.c	net: replace ipfragok with skb->local_df	2010-04-15 23:36:37 -07:00
sm_make_chunk.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sm_sideeffect.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sm_statefuns.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sm_statetable.c	sctp: fix a typo in net/sctp/sm_statetable.c	2009-06-03 09:14:45 -04:00
socket.c	net: sk_add_backlog() take rmem_alloc into account	2010-04-27 15:13:20 -07:00
ssnmap.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sysctl.c	sctp: fix compile error due to sysctl mismerge	2009-12-08 12:51:22 -08:00
transport.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
tsnmap.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ulpevent.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
ulpqueue.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00