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bd14b1b2e2
linux/net/ipv4
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Eric Dumazet bd14b1b2e2 tcp: be more strict before accepting ECN negociation 
It appears some networks play bad games with the two bits reserved for
ECN. This can trigger false congestion notifications and very slow
transferts.

Since RFC 3168 (6.1.1) forbids SYN packets to carry CT bits, we can
disable TCP ECN negociation if it happens we receive mangled CT bits in
the SYN packet.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Perry Lorier <perryl@google.com>
Cc: Matt Mathis <mattmathis@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Wilmer van der Gaast <wilmer@google.com>
Cc: Ankur Jain <jankur@google.com>
Cc: Tom Herbert <therbert@google.com>
Cc: Dave Täht <dave.taht@bufferbloat.net>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-04 12:05:27 -04:00
..
netfilter net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
af_inet.c sock: Introduce named constants for sk_reuse 2012-04-21 15:52:25 -04:00
ah4.c ipv4: fix checkpatch errors 2012-04-15 12:37:19 -04:00
arp.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
cipso_ipv4.c ipv4: Convert call_rcu() to kfree_rcu(), drop opt_kfree_rcu() 2012-02-21 09:03:31 -08:00
datagram.c ipv4: Lock socket and use cork flow in ip4_datagram_connect(). 2011-05-08 13:48:57 -07:00
devinet.c net ipv4: Convert devinet to use register_net_sysctl 2012-04-20 21:22:30 -04:00
esp4.c net: ipv4: Standardize prefixes for message logging 2012-03-12 17:05:21 -07:00
fib_frontend.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
fib_lookup.h ipv4: Fix nexthop caching wrt. scoping. 2011-03-24 18:06:47 -07:00
fib_rules.c ipv4: Stop using NLA_PUT*(). 2012-04-02 04:33:43 -04:00
fib_semantics.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
fib_trie.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
gre.c net: ipv4: Standardize prefixes for message logging 2012-03-12 17:05:21 -07:00
icmp.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
igmp.c ipv4: fix checkpatch errors 2012-04-15 12:37:19 -04:00
inet_connection_sock.c sock: Introduce named constants for sk_reuse 2012-04-21 15:52:25 -04:00
inet_diag.c net: sock_diag_handler structs can be const 2012-04-25 20:46:59 -04:00
inet_fragment.c net/ipv4: EXPORT_SYMBOL cleanups 2010-07-12 12:57:54 -07:00
inet_hashtables.c ipv4: fix checkpatch errors 2012-04-15 12:37:19 -04:00
inet_lro.c net: add skb frag size accessors 2011-10-19 03:10:46 -04:00
inet_timewait_sock.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
inetpeer.c route: Remove redirect_genid 2012-03-08 00:30:32 -08:00
ip_forward.c ipv4: fix checkpatch errors 2012-04-15 12:37:19 -04:00
ip_fragment.c net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
ip_gre.c ipv4: fix checkpatch errors 2012-04-15 12:37:19 -04:00
ip_input.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ip_options.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
ip_output.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ip_sockglue.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
ipcomp.c net: Convert printks to pr_<level> 2012-03-11 23:42:51 -07:00
ipconfig.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
ipip.c ipv4: fix checkpatch errors 2012-04-15 12:37:19 -04:00
ipmr.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
Kconfig net: Fix build regression when INET_UDP_DIAG=y and IPV6=m 2012-02-07 13:35:28 -05:00
Makefile tcp memory pressure controls 2011-12-12 19:04:10 -05:00
netfilter.c net: Delete all remaining instances of ctl_path 2012-04-20 21:22:30 -04:00
ping.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
proc.c tcp: reduce out_of_order memory use 2012-03-19 16:53:08 -04:00
protocol.c net: add __rcu annotations to protocol 2010-10-27 11:37:31 -07:00
raw.c ipv4: fix checkpatch errors 2012-04-15 12:37:19 -04:00
route.c net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
syncookies.c tcp: fix syncookie regression 2012-03-11 15:52:12 -07:00
sysctl_net_ipv4.c tcp: early retransmit 2012-05-02 20:56:10 -04:00
tcp_bic.c tcp: fix undo after RTO for BIC 2012-01-20 14:17:26 -05:00
tcp_cong.c net: ipv4: Standardize prefixes for message logging 2012-03-12 17:05:21 -07:00
tcp_cubic.c tcp: fix undo after RTO for CUBIC 2012-01-20 14:17:26 -05:00
tcp_diag.c inet_diag: Rename inet_diag_req into inet_diag_req_v2 2012-01-11 12:56:06 -08:00
tcp_highspeed.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_htcp.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_hybla.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_illinois.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_input.c skb: Add skb_head_is_locked helper function 2012-05-03 13:18:37 -04:00
tcp_ipv4.c tcp: be more strict before accepting ECN negociation 2012-05-04 12:05:27 -04:00
tcp_lp.c Fix common misspellings 2011-03-31 11:26:23 -03:00
tcp_memcontrol.c Merge branch 'for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2012-03-20 18:11:21 -07:00
tcp_minisocks.c tcp: early retransmit 2012-05-02 20:56:10 -04:00
tcp_output.c tcp: early retransmit: delayed fast retransmit 2012-05-02 20:56:10 -04:00
tcp_probe.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
tcp_scalable.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_timer.c tcp: early retransmit: delayed fast retransmit 2012-05-02 20:56:10 -04:00
tcp_vegas.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_vegas.h
tcp_veno.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_westwood.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_yeah.c Fix common misspellings 2011-03-31 11:26:23 -03:00
tcp.c net: implement tcp coalescing in tcp_queue_rcv() 2012-05-02 21:11:11 -04:00
tunnel4.c net: Convert printks to pr_<level> 2012-03-11 23:42:51 -07:00
udp_diag.c net: kill duplicate included header 2012-01-17 10:31:12 -05:00
udp_impl.h ipv4: fix checkpatch errors 2012-04-15 12:37:19 -04:00
udp.c net: add a limit parameter to sk_add_backlog() 2012-04-23 22:28:28 -04:00
udplite.c net: ipv4: Standardize prefixes for message logging 2012-03-12 17:05:21 -07:00
xfrm4_input.c net/ipv4: EXPORT_SYMBOL cleanups 2010-07-12 12:57:54 -07:00
xfrm4_mode_beet.c ipsec: be careful of non existing mac headers 2012-02-23 16:50:45 -05:00
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c ipsec: be careful of non existing mac headers 2012-02-23 16:50:45 -05:00
xfrm4_output.c xfrm4: Don't call icmp_send on local error 2011-07-01 17:33:19 -07:00
xfrm4_policy.c net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
xfrm4_state.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
xfrm4_tunnel.c net: ipv4: Standardize prefixes for message logging 2012-03-12 17:05:21 -07:00