linux/net/ipv4
Yuchung Cheng 7026b912f9 tcp: fix undo on partial ack in recovery
Upon detecting spurious fast retransmit via timestamps during recovery,
use PRR to clock out new data packet instead of retransmission. Once
all retransmission are proven spurious, the sender then reverts the
cwnd reduction and congestion state to open or disorder.

The current code does the opposite: it undoes cwnd as soon as any
retransmission is spurious and continues to retransmit until all
data are acked. This nullifies the point to undo the cwnd because
the sender is still retransmistting spuriously. This patch fixes
it. The undo_ssthresh argument of tcp_undo_cwnd_reductiuon() is no
longer needed and is removed.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-30 18:06:11 -07:00
..
netfilter net: always pass struct netdev_notifier_info to netdevice notifiers 2013-05-28 21:58:54 -07:00
af_inet.c MPLS: Add limited GSO support 2013-05-27 22:50:59 -07:00
ah4.c net: Add skb_unclone() helper function. 2013-02-15 15:10:37 -05:00
arp.c arp: flush arp cache on IFF_NOARP change 2013-05-28 13:11:02 -07:00
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: Add a socket release callback for datagram sockets 2013-01-21 14:17:05 -05:00
devinet.c net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
esp4.c esp4: fix error return code in esp_output() 2013-04-15 14:05:34 -04:00
fib_frontend.c net: pass info struct via netdevice notifier 2013-05-28 13:11:01 -07:00
fib_lookup.h
fib_rules.c sections: fix section conflicts in net 2012-10-06 03:04:45 +09:00
fib_semantics.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
fib_trie.c fib_trie: no need to delay vfree() 2013-05-06 11:06:51 -04:00
gre.c gso: Handle Trans-Ether-Bridging protocol in skb_network_protocol() 2013-05-08 13:13:30 -07:00
icmp.c ipv4: Correct comparisons and calculations using skb->tail and skb-transport_header 2013-05-28 23:49:07 -07:00
igmp.c ipv4: Correct comparisons and calculations using skb->tail and skb-transport_header 2013-05-28 23:49:07 -07:00
inet_connection_sock.c tcp: Remove TCPCT 2013-03-17 14:35:13 -04:00
inet_diag.c netlink: rename ssk to sk in struct netlink_skb_params 2013-04-19 14:57:56 -04:00
inet_fragment.c net: frag, fix race conditions in LRU list maintenance 2013-05-06 11:06:51 -04:00
inet_hashtables.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
inet_lro.c ipv4: replace ip_fast_csum with csum_replace2 2013-03-15 09:12:25 -04:00
inet_timewait_sock.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
inetpeer.c Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq 2012-10-02 09:54:49 -07:00
ip_forward.c ipv4: introduce rt_uses_gateway 2012-10-08 17:42:36 -04:00
ip_fragment.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
ip_gre.c ip_gre: fix a possible crash in ipgre_err() 2013-05-20 00:18:52 -07:00
ip_input.c net: Add MIB counters for checksum errors 2013-04-29 15:14:03 -04:00
ip_options.c net/ipv4: Ensure that location of timestamp option is stored 2013-03-12 05:35:39 -04:00
ip_output.c ipv4: ip_output: remove inline marking of EXPORT_SYMBOL functions 2013-05-11 16:12:44 -07:00
ip_sockglue.c net: prevent setting ttl=0 via IP_TTL 2013-01-08 17:57:10 -08:00
ip_tunnel.c ip_tunnel: Fix off-by-one error in forming dev name. 2013-03-29 15:24:28 -04:00
ip_vti.c Tunneling: use IP Tunnel stats APIs. 2013-03-26 12:27:19 -04:00
ipcomp.c xfrm: allow to avoid copying DSCP during encapsulation 2013-03-06 07:02:45 +01:00
ipconfig.c ipconfig: add informative timeout messages while waiting for carrier 2013-04-02 14:35:33 -04:00
ipip.c IPIP: Use ip-tunneling code. 2013-03-26 12:27:18 -04:00
ipmr.c net, ipv4, ipv6: Correct assignment of skb->network_header to skb->tail 2013-05-28 23:49:07 -07:00
Kconfig Tunneling: use IP Tunnel stats APIs. 2013-03-26 12:27:19 -04:00
Makefile GRE: Refactor GRE tunneling code. 2013-03-26 12:27:18 -04:00
netfilter.c netfilter: add my copyright statements 2013-04-18 20:27:55 +02:00
ping.c net: ipv6: Add IPv6 support to the ping socket. 2013-05-25 21:07:49 -07:00
proc.c net: Add MIB counters for checksum errors 2013-04-29 15:14:03 -04:00
protocol.c ipv4: Disallow non-namespace aware protocols to register. 2013-02-05 14:42:23 -05:00
raw.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
route.c rtnetlink: Remove passing of attributes into rtnl_doit functions 2013-03-22 10:31:16 -04:00
syncookies.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-04-22 20:32:51 -04:00
sysctl_net_ipv4.c tcp: refactor F-RTO 2013-03-21 11:47:50 -04:00
tcp.c ipv4: Correct comparisons and calculations using skb->tail and skb-transport_header 2013-05-28 23:49:07 -07:00
tcp_bic.c
tcp_cong.c tcp: remove Appropriate Byte Count support 2013-02-05 14:51:16 -05:00
tcp_cubic.c
tcp_diag.c
tcp_fastopen.c tcp: TCP Fast Open Server - header & support functions 2012-08-31 20:02:18 -04:00
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c net: fix divide by zero in tcp algorithm illinois 2012-11-01 11:55:59 -04:00
tcp_input.c tcp: fix undo on partial ack in recovery 2013-05-30 18:06:11 -07:00
tcp_ipv4.c tcp: md5: remove spinlock usage in fast path 2013-05-20 14:00:42 -07:00
tcp_lp.c
tcp_memcontrol.c net: tcp_memcontrol: minor: remove unused variable 2013-04-14 15:41:49 -04:00
tcp_metrics.c tcp: do not expire TCP fastopen cookies 2013-05-05 16:58:02 -04:00
tcp_minisocks.c tcp: md5: remove spinlock usage in fast path 2013-05-20 14:00:42 -07:00
tcp_output.c tcp: xps: fix reordering issues 2013-05-23 18:29:20 -07:00
tcp_probe.c net: proc: change proc_net_remove to remove_proc_entry 2013-02-18 14:53:08 -05:00
tcp_scalable.c
tcp_timer.c tcp: refactor F-RTO 2013-03-21 11:47:50 -04:00
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c tcp: refactor F-RTO 2013-03-21 11:47:50 -04:00
tcp_yeah.c
tunnel4.c
udp.c MPLS: Add limited GSO support 2013-05-27 22:50:59 -07:00
udp_diag.c netlink: rename ssk to sk in struct netlink_skb_params 2013-04-19 14:57:56 -04:00
udp_impl.h
udplite.c
xfrm4_input.c net: Add skb_unclone() helper function. 2013-02-15 15:10:37 -05:00
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c xfrm: allow to avoid copying DSCP during encapsulation 2013-03-06 07:02:45 +01:00
xfrm4_output.c
xfrm4_policy.c xfrm: make gc_thresh configurable in all namespaces 2013-02-06 11:36:29 +01:00
xfrm4_state.c
xfrm4_tunnel.c