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linux/net/ipv4
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Neal Cardwell 016818d076 tcp: TCP Fast Open Server - take SYNACK RTT after completing 3WHS 
When taking SYNACK RTT samples for servers using TCP Fast Open, fix
the code to ensure that we only call tcp_valid_rtt_meas() after we
receive the ACK that completes the 3-way handshake.

Previously we were always taking an RTT sample in
tcp_v4_syn_recv_sock(). However, for TCP Fast Open connections
tcp_v4_conn_req_fastopen() calls tcp_v4_syn_recv_sock() at the time we
receive the SYN. So for TFO we must wait until tcp_rcv_state_process()
to take the RTT sample.

To fix this, we wait until after TFO calls tcp_v4_syn_recv_sock()
before we set the snt_synack timestamp, since tcp_synack_rtt_meas()
already ensures that we only take a SYNACK RTT sample if snt_synack is
non-zero. To be careful, we only take a snt_synack timestamp when
a SYNACK transmit or retransmit succeeds.

Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-22 15:47:10 -04:00
..
netfilter
netlink: hide struct module parameter in netlink_kernel_create
2012-09-08 18:46:30 -04:00
af_inet.c
ipv4: Don't add TCP-code in inet_sock_destruct
2012-09-20 17:12:27 -04:00
ah4.c
ipv4: Add redirect support to all protocol icmp error handlers.
2012-07-11 21:27:49 -07:00
arp.c
ipv4/route: arg delay is useless in rt_cache_flush()
2012-09-07 14:44:08 -04:00
cipso_ipv4.c
cipso: don't follow a NULL pointer when setsockopt() is called
2012-07-18 09:01:12 -07:00
datagram.c
ipv4: Lock socket and use cork flow in ip4_datagram_connect().
2011-05-08 13:48:57 -07:00
devinet.c
netlink: Rename pid to portid to avoid confusion
2012-09-10 15:30:41 -04:00
esp4.c
ipv4: Add redirect support to all protocol icmp error handlers.
2012-07-11 21:27:49 -07:00
fib_frontend.c
netlink: Rename pid to portid to avoid confusion
2012-09-10 15:30:41 -04:00
fib_lookup.h
ipv4: Fix nexthop caching wrt. scoping.
2011-03-24 18:06:47 -07:00
fib_rules.c
ipv4/route: arg delay is useless in rt_cache_flush()
2012-09-07 14:44:08 -04:00
fib_semantics.c
netlink: Rename pid to portid to avoid confusion
2012-09-10 15:30:41 -04:00
fib_trie.c
netlink: Rename pid to portid to avoid confusion
2012-09-10 15:30:41 -04:00
gre.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
icmp.c
ipv4: Prepare for change of rt->rt_iif encoding.
2012-07-23 16:36:26 -07:00
igmp.c
igmp: avoid drop_monitor false positives
2012-09-07 14:17:10 -04:00
inet_connection_sock.c
tcp: fix TFO regression
2012-09-06 14:21:10 -04:00
inet_diag.c
netlink: Rename pid to portid to avoid confusion
2012-09-10 15:30:41 -04:00
inet_fragment.c
ipv6: unify fragment thresh handling code
2012-09-19 17:23:28 -04:00
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: ipv4 and ipv6: Convert printk(KERN_DEBUG to pr_debug
2012-05-16 01:01:03 -04:00
inetpeer.c
ipv4: Maintain redirect and PMTU info in struct rtable again.
2012-07-10 22:40:14 -07:00
ip_forward.c
snmp: fix OutOctets counter to include forwarded datagrams
2012-06-07 14:50:56 -07:00
ip_fragment.c
ipv6: unify fragment thresh handling code
2012-09-19 17:23:28 -04:00
ip_gre.c
gre: add GSO support
2012-09-19 15:40:15 -04:00
ip_input.c
net: TCP early demux cleanup
2012-07-30 14:53:21 -07:00
ip_options.c
ipv4: optimize fib_compute_spec_dst call in ip_options_echo
2012-07-19 08:30:49 -07:00
ip_output.c
ipv4: fix path MTU discovery with connection tracking
2012-08-26 19:13:55 +02:00
ip_sockglue.c
ipv4: Prepare for change of rt->rt_iif encoding.
2012-07-23 16:36:26 -07:00
ip_vti.c
net/ipv4/ip_vti.c: Fix __rcu warnings detected by sparse.
2012-07-23 13:00:54 -07:00
ipcomp.c
ipv4: Add redirect support to all protocol icmp error handlers.
2012-07-11 21:27:49 -07:00
ipconfig.c
ipconfig: add nameserver IPs to kernel-parameter ip=
2012-09-21 14:51:21 -04:00
ipip.c
ipv4: Adjust semantics of rt->rt_gateway.
2012-07-20 13:31:20 -07:00
ipmr.c
netlink: Rename pid to portid to avoid confusion
2012-09-10 15:30:41 -04:00
Kconfig
net/ipv4: VTI support new module for ip_vti.
2012-07-18 09:36:12 -07:00
Makefile
memcg: rename config variables
2012-07-31 18:42:43 -07:00
netfilter.c
netfilter: properly annotate ipv4_netfilter_{init,fini}()
2012-09-03 13:56:04 +02:00
ping.c
userns: Use kgids for sysctl_ping_group_range
2012-08-14 21:49:10 -07:00
proc.c
tcp: TCP Fast Open Server - header & support functions
2012-08-31 20:02:18 -04:00
protocol.c
inet: Sanitize inet{,6} protocol demux.
2012-06-19 18:56:21 -07:00
raw.c
userns: Print out socket uids in a user namespace aware fashion.
2012-08-14 21:48:06 -07:00
route.c
netlink: Rename pid to portid to avoid confusion
2012-09-10 15:30:41 -04:00
syncookies.c
tcp: TCP Fast Open Server - support TFO listeners
2012-08-31 20:02:19 -04:00
sysctl_net_ipv4.c
tcp: TCP Fast Open Server - header & support functions
2012-08-31 20:02:18 -04:00
tcp_bic.c
tcp: fix undo after RTO for BIC
2012-01-20 14:17:26 -05:00
tcp_cong.c
tcp: Apply device TSO segment limit earlier
2012-08-02 00:19:17 -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_fastopen.c
tcp: TCP Fast Open Server - header & support functions
2012-08-31 20:02:18 -04:00
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: bool conversions
2012-05-17 14:59:59 -04:00
tcp_illinois.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_input.c
tcp: TCP Fast Open Server - take SYNACK RTT after completing 3WHS
2012-09-22 15:47:10 -04:00
tcp_ipv4.c
tcp: TCP Fast Open Server - take SYNACK RTT after completing 3WHS
2012-09-22 15:47:10 -04:00
tcp_lp.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
tcp_memcontrol.c
memcg: decrement static keys at real destroy time
2012-05-29 16:22:28 -07:00
tcp_metrics.c
netlink: Rename pid to portid to avoid confusion
2012-09-10 15:30:41 -04:00
tcp_minisocks.c
tcp: Document use of undefined variable.
2012-09-20 17:29:36 -04:00
tcp_output.c
tcp: use PRR to reduce cwin in CWR state
2012-09-03 14:34:02 -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: TCP Fast Open Server - support TFO listeners
2012-08-31 20:02:19 -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
ipv4: Don't add TCP-code in inet_sock_destruct
2012-09-20 17:12:27 -04:00
tunnel4.c
net: Convert printks to pr_<level>
2012-03-11 23:42:51 -07:00
udp_diag.c
netlink: Rename pid to portid to avoid confusion
2012-09-10 15:30:41 -04:00
udp_impl.h
ipv4: fix checkpatch errors
2012-04-15 12:37:19 -04:00
udp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2012-09-15 11:43:53 -04:00
udplite.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
xfrm4_input.c
ipv4: Fix input route performance regression.
2012-07-26 15:50:39 -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
net/ipv4: VTI support rx-path hook in xfrm4_mode_tunnel.
2012-07-18 09:36:12 -07:00
xfrm4_output.c
xfrm4: Don't call icmp_send on local error
2011-07-01 17:33:19 -07:00
xfrm4_policy.c
ipv4: Properly purge netdev references on uncached routes.
2012-07-31 15:06:50 -07:00
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