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93d2f2f36ea993841d2efec4caef1cc95f4baa84
linux/net/ipv4
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Eric Dumazet 1280c26228 tcp: add tcp_rto_max_ms sysctl 
Previous patch added a TCP_RTO_MAX_MS socket option
to tune a TCP socket max RTO value.

Many setups prefer to change a per netns sysctl.

This patch adds /proc/sys/net/ipv4/tcp_rto_max_ms

Its initial value is 120000 (120 seconds).

Keep in mind that a decrease of tcp_rto_max_ms
means shorter overall timeouts, unless tcp_retries2
sysctl is increased.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-02-11 13:08:00 +01:00
..
netfilter
netfilter: nf_dup4: Convert nf_dup_ipv4_route() to dscp_t.
2024-11-15 11:00:29 +01:00
af_inet.c
ipv4: Define inet_sk_init_flowi4() and use it in inet_sk_rebuild_header().
2024-12-20 13:50:09 -08:00
ah4.c
net: fill in MODULE_DESCRIPTION()s for ipv4 modules
2024-02-09 14:12:02 -08:00
arp.c
neighbour: Remove bare neighbour::next pointer
2024-11-09 13:22:57 -08:00
bpf_tcp_ca.c
bpf: Check unsupported ops from the bpf_struct_ops's cfi_stubs
2024-07-29 12:54:13 -07:00
cipso_ipv4.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
datagram.c
ipv4: Use inet_sk_init_flowi4() in ip4_datagram_release_cb().
2024-12-20 13:50:09 -08:00
devinet.c
netlink: support dumping IPv4 multicast addresses
2025-02-11 11:26:53 +01:00
esp4_offload.c
xfrm: Add an inbound percpu state cache.
2024-10-29 11:56:18 +01:00
esp4.c
Merge tag 'ipsec-2025-01-27' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
2025-01-27 15:15:12 -08:00
fib_frontend.c
net: ip: fix unexpected return in fib_validate_source()
2024-11-18 18:57:00 -08:00
fib_lookup.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-02-17 11:44:20 -08:00
fib_notifier.c
net: do not acquire rtnl in fib_seq_sum()
2024-10-11 15:35:05 -07:00
fib_rules.c
ip: fib_rules: Fetch net from fib_rule in fib[46]_rule_configure().
2025-02-10 19:08:52 -08:00
fib_semantics.c
ipv4: remove fib_info_devhash[]
2024-10-07 16:46:27 -07:00
fib_trie.c
ipv4: output metric as unsigned int
2024-12-15 13:13:40 -08:00
fou_bpf.c
ip_tunnel: convert __be16 tunnel flags to bitmaps
2024-04-01 10:49:28 +01:00
fou_core.c
fou: fix initialization of grc
2024-09-09 17:21:47 -07:00
fou_nl.c
tools: ynl-gen: use big-endian netlink attribute types
2024-10-22 15:33:24 +02:00
fou_nl.h
net: ynl: prefix uAPI header include with uapi/
2023-05-26 10:30:14 +01:00
gre_demux.c
ip_tunnel: convert __be16 tunnel flags to bitmaps
2024-04-01 10:49:28 +01:00
gre_offload.c
net: gro: rename skb_gro_header_hard()
2024-03-05 13:30:11 +01:00
icmp.c
inetpeer: do not get a refcount in inet_getpeer()
2024-12-17 19:37:48 -08:00
igmp_internal.h
netlink: support dumping IPv4 multicast addresses
2025-02-11 11:26:53 +01:00
igmp.c
netlink: support dumping IPv4 multicast addresses
2025-02-11 11:26:53 +01:00
inet_connection_sock.c
tcp: rename inet_csk_{delete|reset}_keepalive_timer()
2025-02-07 11:53:27 -08:00
inet_diag.c
tcp: annotate data-races around icsk->icsk_pending
2024-10-04 15:34:39 -07:00
inet_fragment.c
net: Rename mono_delivery_time to tstamp_type for scalabilty
2024-05-23 14:14:23 -07:00
inet_hashtables.c
inet: constify 'struct net' parameter of various lookup helpers
2024-08-05 16:22:45 -07:00
inet_timewait_sock.c
tcp: move inet_twsk_schedule helper out of header
2024-06-10 11:54:18 +01:00
inetpeer.c
inetpeer: avoid false sharing in inet_peer_xrlim_allow()
2024-12-20 13:04:40 -08:00
ip_forward.c
net: fix IPSTATS_MIB_OUTFORWDATAGRAMS increment after fragment check
2023-10-13 09:58:45 -07:00
ip_fragment.c
inetpeer: do not get a refcount in inet_getpeer()
2024-12-17 19:37:48 -08:00
ip_gre.c
ipv4: ip_gre: Fix set but not used warning in ipgre_err() if IPv4-only
2025-02-05 18:48:45 -08:00
ip_input.c
ipv4: remove useless arg
2025-01-02 17:17:40 -08:00
ip_options.c
net: ip: make ip_route_input() return drop reasons
2024-11-12 11:24:51 +01:00
ip_output.c
ipv4: Use inet_sk_init_flowi4() in __ip_queue_xmit().
2024-12-20 13:50:09 -08:00
ip_sockglue.c
Merge tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2025-01-22 08:28:57 -08:00
ip_tunnel_core.c
ip_tunnel: convert __be16 tunnel flags to bitmaps
2024-04-01 10:49:28 +01:00
ip_tunnel.c
net: Fix netns for ip_tunnel_init_flow()
2024-12-23 10:04:41 -08:00
ip_vti.c
netdev_features: convert NETIF_F_LLTX to dev->lltx
2024-09-03 11:36:43 +02:00
ipcomp.c
xfrm: ipcomp: add extack to ipcomp{4,6}_init_state
2022-09-29 07:18:00 +02:00
ipconfig.c
net: ipconfig: move ic_nameservers_fallback into #ifdef block
2023-05-22 11:17:55 +01:00
ipip.c
netdev_features: convert NETIF_F_LLTX to dev->lltx
2024-09-03 11:36:43 +02:00
ipmr_base.c
ipmr: do not call mr_mfc_uses_dev() for unres entries
2025-01-23 07:08:13 -08:00
ipmr.c
inet: ipmr: fix data-races
2025-01-15 15:07:23 -08:00
Kconfig
net/tcp: Expand goo.gl link
2024-07-30 18:35:12 -07:00
Makefile
bpfilter: remove bpfilter
2024-01-04 10:23:10 -08:00
metrics.c
net: remove NULL-pointer net parameter in ip_metrics_convert
2024-06-05 10:06:00 +01:00
netfilter.c
netfilter: ipv4: Convert ip_route_me_harder() to dscp_t.
2024-11-15 11:00:29 +01:00
netlink.c
…
nexthop.c
net: convert to nla_get_*_default()
2024-11-11 10:32:06 -08:00
ping.c
ping: use sk_skb_reason_drop to free rx packets
2024-06-19 12:44:22 +01:00
proc.c
tcp: add LINUX_MIB_PAWS_OLD_ACK SNMP counter
2025-01-14 13:28:13 -08:00
protocol.c
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
raw_diag.c
inet_diag: add module pointer to "struct inet_diag_handler"
2024-01-23 15:13:54 +01:00
raw.c
sock: support SO_PRIORITY cmsg
2024-12-16 18:13:44 -08:00
route.c
ipv4: Prepare inet_rtm_getroute() to .flowi4_tos conversion.
2025-01-16 16:52:29 -08:00
syncookies.c
tcp: use sk_skb_reason_drop to free rx packets
2024-06-19 12:44:22 +01:00
sysctl_net_ipv4.c
tcp: add tcp_rto_max_ms sysctl
2025-02-11 13:08:00 +01:00
tcp_ao.c
net/tcp: Add missing lockdep annotations for TCP-AO hlist traversals
2024-11-03 12:10:11 -08:00
tcp_bbr.c
tcp: Add new args for cong_control in tcp_congestion_ops
2024-05-02 16:26:56 -07:00
tcp_bic.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_bpf.c
tcp_bpf: Fix copied value in tcp_bpf_sendmsg
2024-12-20 22:53:36 +01:00
tcp_cdg.c
Merge tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
2022-10-16 15:27:07 -07:00
tcp_cong.c
tcp: only release congestion control if it has been initialized
2024-10-31 18:22:48 -07:00
tcp_cubic.c
tcp_cubic: fix incorrect HyStart round start detection
2025-01-20 12:26:41 +00:00
tcp_dctcp.c
tcp: Fix shift-out-of-bounds in dctcp_update_alpha().
2024-05-21 13:34:50 +02:00
tcp_dctcp.h
…
tcp_diag.c
inet_diag: add module pointer to "struct inet_diag_handler"
2024-01-23 15:13:54 +01:00
tcp_fastopen.c
tcp: use tcp_reset_xmit_timer()
2025-02-11 13:07:59 +01:00
tcp_highspeed.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_htcp.c
tcp: Use clamp() in htcp_alpha_update()
2024-08-06 12:16:25 -07:00
tcp_hybla.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_illinois.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_input.c
tcp: add the ability to control max RTO
2025-02-11 13:08:00 +01:00
tcp_ipv4.c
tcp: add tcp_rto_max_ms sysctl
2025-02-11 13:08:00 +01:00
tcp_lp.c
tcp: rename tcp_time_stamp() to tcp_time_stamp_ts()
2023-10-23 09:35:01 +01:00
tcp_metrics.c
tcp_metrics: use netlink policy for IPv6 addr len validation
2024-08-19 17:42:57 -07:00
tcp_minisocks.c
tcp: rename inet_csk_{delete|reset}_keepalive_timer()
2025-02-07 11:53:27 -08:00
tcp_nv.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_offload.c
net: gso: fix tcp fraglist segmentation after pull from frag_list
2024-10-02 17:21:47 -07:00
tcp_output.c
tcp: add the ability to control max RTO
2025-02-11 13:08:00 +01:00
tcp_plb.c
prandom: remove prandom_u32_max()
2022-12-20 03:13:45 +01:00
tcp_rate.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-04-28 13:02:01 -07:00
tcp_recovery.c
tcp: fix excessive TLP and RACK timeouts from HZ rounding
2023-10-17 17:25:42 -07:00
tcp_scalable.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_sigpool.c
net/tcp_sigpool: Use nested-BH locking for sigpool_scratch.
2024-06-24 16:41:22 -07:00
tcp_timer.c
tcp: add the ability to control max RTO
2025-02-11 13:08:00 +01:00
tcp_ulp.c
net/ulp: use consistent error code when blocking ULP
2023-01-19 09:26:16 -08:00
tcp_vegas.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_vegas.h
…
tcp_veno.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_westwood.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_yeah.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp.c
tcp: add tcp_rto_max_ms sysctl
2025-02-11 13:08:00 +01:00
tunnel4.c
net: fill in MODULE_DESCRIPTION()s for ipv4 modules
2024-02-09 14:12:02 -08:00
udp_bpf.c
bpf, sockmap: Fix an infinite loop error when len is 0 in tcp_bpf_recvmsg_parser()
2023-03-03 17:25:15 +01:00
udp_diag.c
inet_diag: add module pointer to "struct inet_diag_handler"
2024-01-23 15:13:54 +01:00
udp_impl.h
sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)
2023-06-24 15:50:13 -07:00
udp_offload.c
gso: fix udp gso fraglist segmentation after pull from frag_list
2024-10-02 17:29:31 -07:00
udp_tunnel_core.c
ipv4: udp_tunnel: Unmask upper DSCP bits in udp_tunnel_dst_lookup()
2024-09-09 14:14:53 +01:00
udp_tunnel_nic.c
udp_tunnel: Use flex array to simplify code
2023-10-03 11:39:34 +02:00
udp_tunnel_stub.c
…
udp.c
udp: gso: do not drop small packets when PMTU reduces
2025-02-03 10:13:27 +00:00
udplite.c
udplite: remove UDPLITE_BIT
2023-09-14 16:16:36 +02:00
xfrm4_input.c
ipv4: Convert ip_route_input_noref() to dscp_t.
2024-10-03 16:21:21 -07:00
xfrm4_output.c
…
xfrm4_policy.c
xfrm: Convert struct xfrm_dst_lookup_params -> tos to dscp_t.
2024-11-06 12:42:51 +01:00
xfrm4_protocol.c
ipv4: Convert ip_route_input_noref() to dscp_t.
2024-10-03 16:21:21 -07:00
xfrm4_state.c
…
xfrm4_tunnel.c
net: fill in MODULE_DESCRIPTION()s for ipv4 modules
2024-02-09 14:12:02 -08:00