Neal Cardwell cdbeb633ca tcp: when rearming RTO, if RTO time is in past then fire RTO ASAP ...

In some situations tcp_send_loss_probe() can realize that it's unable
to send a loss probe (TLP), and falls back to calling tcp_rearm_rto()
to schedule an RTO timer. In such cases, sometimes tcp_rearm_rto()
realizes that the RTO was eligible to fire immediately or at some
point in the past (delta_us <= 0). Previously in such cases
tcp_rearm_rto() was scheduling such "overdue" RTOs to happen at now +
icsk_rto, which caused needless delays of hundreds of milliseconds
(and non-linear behavior that made reproducible testing
difficult). This commit changes the logic to schedule "overdue" RTOs
ASAP, rather than at now + icsk_rto.

Fixes: 6ba8a3b19e ("tcp: Tail loss probe (TLP)")
Suggested-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2017-08-18 16:07:43 -07:00

..

netfilter

netfilter: nf_tables: only allow in/output for arp packets

2017-07-17 17:02:44 +02:00

af_inet.c

igmp: Fix regression caused by igmp sysctl namespace code.

2017-08-09 22:46:44 -07:00

ah4.c

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next

2017-06-23 14:17:31 -04:00

arp.c

networking: make skb_put & friends return void pointers

2017-06-16 11:48:39 -04:00

cipso_ipv4.c

Cipso: cipso_v4_optptr enter infinite loop

2017-08-01 15:31:23 -07:00

datagram.c

net: Set sk_txhash from a random number

2015-07-29 22:44:04 -07:00

devinet.c

net: convert in_device.refcnt from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

esp4_offload.c

esp4/6: Fix GSO path for non-GSO SW-crypto packets

2017-04-19 07:48:57 +02:00

esp4.c

net: convert sock.sk_wmem_alloc from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

fib_frontend.c

ipv4: initialize fib_trie prior to register_netdev_notifier call.

2017-07-20 15:24:45 -07:00

fib_lookup.h

net: add extack arg to lwtunnel build state

2017-05-30 11:55:32 -04:00

fib_notifier.c

ipv4: fib: Remove redundant argument

2017-03-10 09:45:09 -08:00

fib_rules.c

ipv4: fib_rules: Dump FIB rules when registering FIB notifier

2017-03-16 10:18:34 -07:00

fib_semantics.c

ipv4: fix NULL dereference in free_fib_info_rcu()

2017-08-15 17:07:52 -07:00

fib_trie.c

net, ipv4: convert fib_info.fib_clntref from atomic_t to refcount_t

2017-07-04 01:29:04 -07:00

fou.c

gue: fix remcsum when GRO on and CHECKSUM_PARTIAL boundary is outer UDP

2017-08-01 16:09:14 -07:00

gre_demux.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-06-30 05:03:36 -04:00

gre_offload.c

net: add recursion limit to GRO

2016-10-20 14:32:22 -04:00

icmp.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-06-15 11:59:32 -04:00

igmp.c

net: igmp: Use ingress interface rather than vrf device

2017-08-16 11:08:55 -07:00

inet_connection_sock.c

net: convert sock.sk_refcnt from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

inet_diag.c

tcp: remove early retransmit

2017-01-13 22:37:16 -05:00

inet_fragment.c

net: convert inet_frag_queue.refcnt from atomic_t to refcount_t

2017-07-01 07:39:09 -07:00

inet_hashtables.c

net: make sk_ehashfn() static

2017-07-03 03:29:14 -07:00

inet_timewait_sock.c

net: convert sock.sk_refcnt from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

inetpeer.c

net: convert inet_peer.refcnt from atomic_t to refcount_t

2017-07-01 07:39:07 -07:00

ip_forward.c

ipv4: allow local fragmentation in ip_finish_output_gso()

2016-11-03 16:10:26 -04:00

ip_fragment.c

net: convert inet_frag_queue.refcnt from atomic_t to refcount_t

2017-07-01 07:39:09 -07:00

ip_gre.c

net: add netlink_ext_ack argument to rtnl_link_ops.validate

2017-06-26 23:13:22 -04:00

ip_input.c

net: Add sysctl to toggle early demux for tcp and udp

2017-03-24 13:17:07 -07:00

ip_options.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

ip_output.c

udp: consistently apply ufo or fragmentation

2017-08-10 09:52:12 -07:00

ip_sockglue.c

do_ip_setsockopt(): don't open-code memdup_user()

2017-06-30 02:04:09 -04:00

ip_tunnel_core.c

net: store port/representator id in metadata_dst

2017-06-25 11:42:01 -04:00

ip_tunnel.c

ip_tunnel: fix potential issue in ip_tunnel_rcv

2017-06-16 12:01:29 -04:00

ip_vti.c

net: add netlink_ext_ack argument to rtnl_link_ops.validate

2017-06-26 23:13:22 -04:00

ipcomp.c

ipv4: coding style: comparison for equality with NULL

2015-04-03 12:11:15 -04:00

ipconfig.c

networking: convert many more places to skb_put_zero()

2017-06-16 11:48:35 -04:00

ipip.c

net: add netlink_ext_ack argument to rtnl_link_ops.validate

2017-06-26 23:13:22 -04:00

ipmr.c

net: ipmr: ipmr_get_table() returns NULL

2017-07-12 08:18:46 -07:00

Kconfig

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next

2017-02-16 21:25:49 -05:00

Makefile

tcp: ULP infrastructure

2017-06-15 12:12:40 -04:00

netfilter.c

netfilter: use skb_to_full_sk in ip_route_me_harder

2017-02-28 12:49:36 +01:00

ping.c

net: convert sock.sk_refcnt from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

proc.c

tcp: add TCPMemoryPressuresChrono counter

2017-06-08 11:26:19 -04:00

protocol.c

net: Add sysctl to toggle early demux for tcp and udp

2017-03-24 13:17:07 -07:00

raw_diag.c

net: ip, raw_diag -- Use jump for exiting from nested loop

2016-11-03 15:25:26 -04:00

raw.c

net: convert sock.sk_refcnt from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

route.c

net: check and errout if res->fi is NULL when RTM_F_FIB_MATCH is set

2017-08-18 16:05:46 -07:00

syncookies.c

ipv4: ipv6: initialize treq->txhash in cookie_v[46]_check()

2017-07-18 11:22:51 -07:00

sysctl_net_ipv4.c

tcp: ULP infrastructure

2017-06-15 12:12:40 -04:00

tcp_bbr.c

tcp_bbr: init pacing rate on first RTT sample

2017-07-15 14:43:29 -07:00

tcp_bic.c

tcp: bic, cubic: use tcp_jiffies32 instead of tcp_time_stamp

2017-05-17 16:06:01 -04:00

tcp_cdg.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>

2017-03-02 08:42:27 +01:00

tcp_cong.c

bpf: Add support for changing congestion control

2017-07-01 16:15:14 -07:00

tcp_cubic.c

tcp: bic, cubic: use tcp_jiffies32 instead of tcp_time_stamp

2017-05-17 16:06:01 -04:00

tcp_dctcp.c

Revert "dctcp: update cwnd on congestion event"

2016-12-06 11:34:24 -05:00

tcp_diag.c

net: diag: Fix refcnt leak in error path destroying socket

2016-08-23 23:11:36 -07:00

tcp_fastopen.c

bpf: Add TCP connection BPF callbacks

2017-07-01 16:15:14 -07:00

tcp_highspeed.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_htcp.c

tcp: replace misc tcp_time_stamp to tcp_jiffies32

2017-05-17 16:06:01 -04:00

tcp_hybla.c

tcp: make undo_cwnd mandatory for congestion modules

2016-11-21 13:20:17 -05:00

tcp_illinois.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_input.c

tcp: when rearming RTO, if RTO time is in past then fire RTO ASAP

2017-08-18 16:07:43 -07:00

tcp_ipv4.c

tcp: fix possible deadlock in TCP stack vs BPF filter

2017-08-14 22:31:27 -07:00

tcp_lp.c

tcp: switch TCP TS option (RFC 7323) to 1ms clock

2017-05-17 16:06:01 -04:00

tcp_metrics.c

tcp: use tcp_jiffies32 to feed tp->snd_cwnd_stamp

2017-05-17 16:06:01 -04:00

tcp_minisocks.c

bpf: Support for setting initial receive window

2017-07-01 16:15:13 -07:00

tcp_nv.c

tcpnv: do not export local function

2017-05-21 13:42:36 -04:00

tcp_offload.c

net: convert sock.sk_wmem_alloc from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

tcp_output.c

tcp: fastopen: tcp_connect() must refresh the route

2017-08-08 20:39:52 -07:00

tcp_probe.c

tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"

2017-02-21 13:26:03 -05:00

tcp_rate.c

tcp: export do_tcp_sendpages and tcp_rate_check_app_limited functions

2017-06-15 12:12:40 -04:00

tcp_recovery.c

tcp: switch TCP TS option (RFC 7323) to 1ms clock

2017-05-17 16:06:01 -04:00

tcp_scalable.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_timer.c

net: fix keepalive code vs TCP_FASTOPEN_CONNECT

2017-08-03 09:34:51 -07:00

tcp_ulp.c

tcp: ulp: avoid module refcnt leak in tcp_set_ulp

2017-08-14 22:17:05 -07:00

tcp_vegas.c

tcp: make undo_cwnd mandatory for congestion modules

2016-11-21 13:20:17 -05:00

tcp_vegas.h

tcp: replace cnt & rtt with struct in pkts_acked()

2016-05-11 14:43:19 -04:00

tcp_veno.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_westwood.c

tcp_westwood: use tcp_jiffies32 instead of tcp_time_stamp

2017-05-17 16:06:01 -04:00

tcp_yeah.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp.c

bpf: Add support for changing congestion control

2017-07-01 16:15:14 -07:00

tunnel4.c

tunnels: correct conditional build of MPLS and IPv6

2016-07-11 13:27:06 -07:00

udp_diag.c

net: convert sock.sk_refcnt from atomic_t to refcount_t

2017-07-01 07:39:08 -07:00

udp_impl.h

udp: make *udp*_queue_rcv_skb() functions static

2017-05-18 10:23:33 -04:00

udp_offload.c

net: avoid skb_warn_bad_offload false positives on UFO

2017-08-08 21:39:01 -07:00

udp_tunnel.c

net: Remove deprecated tunnel specific UDP offload functions

2016-06-17 20:23:32 -07:00

udp.c

datagram: When peeking datagrams with offset < 0 don't skip empty skbs

2017-08-18 15:12:54 -07:00

udplite.c

udplite: call proper backlog handlers

2016-11-24 15:32:14 -05:00

xfrm4_input.c

esp: Add a software GRO codepath

2017-02-15 11:04:11 +01:00

xfrm4_mode_beet.c

networking: make skb_pull & friends return void pointers

2017-06-16 11:48:39 -04:00

xfrm4_mode_transport.c

xfrm: Add encapsulation header offsets while SKB is not encrypted

2017-04-14 10:07:39 +02:00

xfrm4_mode_tunnel.c

xfrm: Add encapsulation header offsets while SKB is not encrypted

2017-04-14 10:07:39 +02:00

xfrm4_output.c

xfrm: Add an IPsec hardware offloading API

2017-04-14 10:06:10 +02:00

xfrm4_policy.c

xfrm: policy: make policy backend const

2017-02-09 10:22:19 +01:00

xfrm4_protocol.c

xfrm: input: constify xfrm_input_afinfo

2017-02-09 10:22:17 +01:00

xfrm4_state.c

xfrm: remove unused function

2017-01-10 10:57:12 +01:00

xfrm4_tunnel.c

sit: add IPv4 over IPv4 support

2013-05-31 17:19:05 -07:00