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
..
datagram.c	net: sk_sleep() helper	2010-04-20 16:37:13 -07:00
dev.c	net: batch skb dequeueing from softnet input_pkt_queue	2010-04-27 15:11:49 -07:00
dev_addr_lists.c	net: include linux/proc_fs.h in dev_addr_lists.c	2010-04-07 16:46:36 -07:00
drop_monitor.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
dst.c	dst: don't inline dst_ifdown	2010-04-13 03:32:44 -07:00
ethtool.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-04-11 14:53:53 -07:00
fib_rules.c	net: fib_rules: mark arguments to fib_rules_register const and __net_initdata	2010-04-26 16:02:04 +02:00
filter.c	net: Socket filter ancilliary data access for skb->dev->type	2010-04-22 16:05:44 -07:00
flow.c	flow: delayed deletion of flow cache entries	2010-04-07 03:43:20 -07:00
gen_estimator.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
gen_stats.c	pkt_sched: gen_estimator: Dont report fake rate estimators	2009-10-07 01:07:42 -07:00
iovec.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
kmap_skb.h	[PATCH] severing skbuff.h -> highmem.h	2006-12-04 02:00:29 -05:00
link_watch.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
Makefile	net: convert multicast list to list_head	2010-04-03 14:22:15 -07:00
neighbour.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
net-sysfs.c	rps: static functions	2010-04-19 14:40:57 -07:00
net-sysfs.h	netns: Fix device renaming for sysfs	2008-05-02 17:00:58 -07:00
net-traces.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
net_namespace.c	netns: rename unregister_pernet_subsys parameter	2010-04-25 00:49:56 -07:00
netevent.c	[NET]: net/core/netevent.c should #include <net/netevent.h>	2007-07-05 17:40:27 -07:00
netpoll.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
pktgen.c	pktgen node allocation	2010-03-21 20:33:36 -07:00
request_sock.c	net: convert BUG_TRAP to generic WARN_ON	2008-07-25 21:43:18 -07:00
rtnetlink.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/ipmr-2.6	2010-04-27 12:57:39 -07:00
scm.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
skbuff.c	net: Remove two unnecessary exports (skbuff).	2010-04-20 22:39:53 -07:00
sock.c	net: sk_add_backlog() take rmem_alloc into account	2010-04-27 15:13:20 -07:00
stream.c	net: sk_sleep() helper	2010-04-20 16:37:13 -07:00
sysctl_net_core.c	rfs: Receive Flow Steering	2010-04-16 16:01:27 -07:00
user_dma.c	net/core/user_dma.c: Use frag list abstraction interfaces.	2009-06-09 00:19:10 -07:00
utils.c	printk: Remove ratelimit.h from kernel.h	2009-09-22 16:18:09 +02:00