Eric Dumazet fff3269907 tcp: reflect SYN queue_mapping into SYNACK packets ... While testing how linux behaves on SYNFLOOD attack on multiqueue device (ixgbe), I found that SYNACK messages were dropped at Qdisc level because we send them all on a single queue. Obvious choice is to reflect incoming SYN packet @queue_mapping to SYNACK packet. Under stress, my machine could only send 25.000 SYNACK per second (for 200.000 incoming SYN per second). NIC : ixgbe with 16 rx/tx queues. After patch, not a single SYNACK is dropped. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Hans Schillstrom <hans.schillstrom@ericsson.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-06-01 14:22:11 -04:00
..
netfilter	net: Convert net_ratelimit uses to net_<level>_ratelimited	2012-05-15 13:45:03 -04:00
af_inet.c
ah4.c	net: ipv4 and ipv6: Convert printk(KERN_DEBUG to pr_debug	2012-05-16 01:01:03 -04:00
arp.c	Merge branch 'delete-tokenring' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2012-05-16 01:02:40 -04:00
cipso_ipv4.c
datagram.c
devinet.c	net: ipv4 and ipv6: Convert printk(KERN_DEBUG to pr_debug	2012-05-16 01:01:03 -04:00
esp4.c	xfrm: take net hdr len into account for esp payload size calculation	2012-05-27 01:08:29 -04:00
fib_frontend.c
fib_lookup.h
fib_rules.c
fib_semantics.c	ipv4: fix the rcu race between free_fib_info and ip_route_output_slow	2012-05-24 00:28:21 -04:00
fib_trie.c	ipv4: Do not use dead fib_info entries.	2012-05-10 22:16:32 -04:00
gre.c
icmp.c	net: Convert net_ratelimit uses to net_<level>_ratelimited	2012-05-15 13:45:03 -04:00
igmp.c
inet_connection_sock.c	tcp: do not create inetpeer on SYNACK message	2012-06-01 14:22:11 -04:00
inet_diag.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-05-07 23:35:40 -04:00
inet_fragment.c
inet_hashtables.c
inet_lro.c
inet_timewait_sock.c	net: ipv4 and ipv6: Convert printk(KERN_DEBUG to pr_debug	2012-05-16 01:01:03 -04:00
inetpeer.c
ip_forward.c
ip_fragment.c	ipv4: use skb coalescing in defragmentation	2012-05-19 18:34:57 -04:00
ip_gre.c
ip_input.c	net: Convert net_ratelimit uses to net_<level>_ratelimited	2012-05-15 13:45:03 -04:00
ip_options.c	net: Convert net_ratelimit uses to net_<level>_ratelimited	2012-05-15 13:45:03 -04:00
ip_output.c	net: Convert net_ratelimit uses to net_<level>_ratelimited	2012-05-15 13:45:03 -04:00
ip_sockglue.c	net: IP_MULTICAST_IF setsockopt now recognizes struct mreq	2012-05-07 23:03:22 -04:00
ipcomp.c
ipconfig.c	net/ipv4/ipconfig: neaten __setup placement	2012-05-20 04:06:16 -04:00
ipip.c
ipmr.c	net: Convert net_ratelimit uses to net_<level>_ratelimited	2012-05-15 13:45:03 -04:00
Kconfig	net: delete all instances of special processing for token ring	2012-05-15 20:14:35 -04:00
Makefile
netfilter.c
ping.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-05-23 17:42:39 -07:00
proc.c
protocol.c
raw.c
route.c	mm: add a low limit to alloc_large_system_hash	2012-05-24 00:28:21 -04:00
syncookies.c
sysctl_net_ipv4.c	tcp: early retransmit	2012-05-02 20:56:10 -04:00
tcp_bic.c
tcp_cong.c	tcp: bool conversions	2012-05-17 14:59:59 -04:00
tcp_cubic.c
tcp_diag.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c	tcp: bool conversions	2012-05-17 14:59:59 -04:00
tcp_illinois.c
tcp_input.c	tcp: take care of overlaps in tcp_try_coalesce()	2012-05-24 00:28:21 -04:00
tcp_ipv4.c	tcp: reflect SYN queue_mapping into SYNACK packets	2012-06-01 14:22:11 -04:00
tcp_lp.c
tcp_memcontrol.c	memcg: decrement static keys at real destroy time	2012-05-29 16:22:28 -07:00
tcp_minisocks.c	tcp: bool conversions	2012-05-17 14:59:59 -04:00
tcp_output.c	tcp: bool conversions	2012-05-17 14:59:59 -04:00
tcp_probe.c
tcp_scalable.c
tcp_timer.c	tcp: early retransmit: delayed fast retransmit	2012-05-02 20:56:10 -04:00
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tcp.c	mm: add a low limit to alloc_large_system_hash	2012-05-24 00:28:21 -04:00
tunnel4.c
udp_diag.c	udp_diag: implement idiag_get_info for udp/udplite to get queue information	2012-04-25 20:43:01 -04:00
udp_impl.h
udp.c	mm: add a low limit to alloc_large_system_hash	2012-05-24 00:28:21 -04:00
udplite.c
xfrm4_input.c
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c
xfrm4_policy.c
xfrm4_state.c
xfrm4_tunnel.c