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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/net/ipv4
История
Eric Dumazet 04317a2471 tcp: avoid too many retransmit packets 
commit 97a9063518f198ec0adb2ecb89789de342bb8283 upstream.

If a TCP socket is using TCP_USER_TIMEOUT, and the other peer
retracted its window to zero, tcp_retransmit_timer() can
retransmit a packet every two jiffies (2 ms for HZ=1000),
for about 4 minutes after TCP_USER_TIMEOUT has 'expired'.

The fix is to make sure tcp_rtx_probe0_timed_out() takes
icsk->icsk_user_timeout into account.

Before blamed commit, the socket would not timeout after
icsk->icsk_user_timeout, but would use standard exponential
backoff for the retransmits.

Also worth noting that before commit e89688e3e9 ("net: tcp:
fix unexcepted socket die when snd_wnd is 0"), the issue
would last 2 minutes instead of 4.

Fixes: b701a99e43 ("tcp: Add tcp_clamp_rto_to_user_timeout() helper to improve accuracy")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Reviewed-by: Jon Maxwell <jmaxwell37@gmail.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20240710001402.2758273-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2024-07-18 13:07:40 +02:00
..
bpfilter
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netfilter netfilter: tproxy: bail out if IP has been disabled on the device 2024-06-16 13:39:51 +02:00
Kconfig tcp: configurable source port perturb table size 2022-12-02 17:41:11 +01:00
Makefile
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af_inet.c ipv6: Fix data races around sk->sk_prot. 2024-07-05 09:14:50 +02:00
ah4.c
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arp.c arp: Prevent overflow in arp_req_get(). 2024-03-01 13:22:00 +01:00
bpf_tcp_ca.c
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cipso_ipv4.c cipso: fix total option length computation 2024-07-05 09:14:29 +02:00
datagram.c udp: Update reuse->has_conns under reuseport_lock. 2022-10-29 10:12:56 +02:00
devinet.c ipv4: properly combine dev_base_seq and ipv4.dev_addr_genid 2024-03-01 13:21:58 +01:00
esp4.c net: ipv4: fix return value check in esp_remove_trailer 2023-10-25 11:58:56 +02:00
esp4_offload.c xfrm: Linearize the skb after offloading if needed. 2023-06-28 10:29:46 +02:00
fib_frontend.c ipv4: Fix incorrect table ID in IOCTL path 2023-03-22 13:31:28 +01:00
fib_lookup.h
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fib_notifier.c
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fib_rules.c
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fib_semantics.c ipv4/fib: send notify when delete source address routes 2023-10-25 11:59:00 +02:00
fib_trie.c ipv4/fib: send notify when delete source address routes 2023-10-25 11:59:00 +02:00
fou.c
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gre_demux.c
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gre_offload.c
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icmp.c icmp: prevent possible NULL dereferences from icmp_build_probe() 2024-05-02 16:24:44 +02:00
igmp.c bpf: net: Change do_ip_getsockopt() to take the sockptr_t argument 2024-03-26 18:21:23 -04:00
inet_connection_sock.c Fix race for duplicate reqsk on identical SYN 2024-07-05 09:14:41 +02:00
inet_diag.c inet_diag: Initialize pad field in struct inet_diag_req_v2 2024-07-18 13:07:31 +02:00
inet_fragment.c
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inet_hashtables.c net: remove duplicate reuseport_lookup functions 2024-06-16 13:39:21 +02:00
inet_timewait_sock.c tcp: Fix NEW_SYN_RECV handling in inet_twsk_purge() 2024-05-02 16:24:49 +02:00
inetpeer.c inetpeer: Fix data-races around sysctl. 2022-07-21 21:24:21 +02:00
ip_forward.c ip: Fix data-races around sysctl_ip_fwd_update_priority. 2022-07-29 17:25:13 +02:00
ip_fragment.c
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ip_gre.c erspan: make sure erspan_base_hdr is present in skb->head 2024-04-10 16:19:38 +02:00
ip_input.c ipv4: ignore dst hint for multipath routes 2023-09-19 12:22:58 +02:00
ip_options.c
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ip_output.c net: ipv4: fix a memleak in ip_setup_cork 2024-02-23 08:54:54 +01:00
ip_sockglue.c bpf: net: Change do_ip_getsockopt() to take the sockptr_t argument 2024-03-26 18:21:23 -04:00
ip_tunnel.c net: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv() 2024-03-26 18:21:22 -04:00
ip_tunnel_core.c tunnels: fix out of bounds access when building IPv6 PMTU error 2024-02-23 08:54:57 +01:00
ip_vti.c ip_vti: fix potential slab-use-after-free in decode_session6 2023-08-26 14:23:32 +02:00
ipcomp.c
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ipconfig.c
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ipip.c
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ipmr.c ipmr: fix incorrect parameter validation in the ip_mroute_getsockopt() function 2024-03-26 18:21:23 -04:00
ipmr_base.c
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metrics.c ipv4: prevent potential spectre v1 gadget in ip_metrics_convert() 2023-02-01 08:27:27 +01:00
netfilter.c
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netlink.c
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nexthop.c nexthop: Fix infinite nexthop bucket dump when using maximum nexthop ID 2023-08-16 18:22:02 +02:00
ping.c ping: fix address binding wrt vrf 2022-05-18 10:26:57 +02:00
proc.c ip: Fix data-races around sysctl_ip_default_ttl. 2022-07-29 17:25:09 +02:00
protocol.c
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raw.c net: drop nopreempt requirement on sock_prot_inuse_add() 2024-07-05 09:14:08 +02:00
raw_diag.c
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route.c net: fix __dst_negative_advice() race 2024-06-16 13:39:59 +02:00
syncookies.c tcp: fix cookie_init_timestamp() overflows 2023-11-20 11:08:16 +01:00
sysctl_net_ipv4.c tcp: restrict net.ipv4.tcp_app_win 2023-04-20 12:13:53 +02:00
tcp.c tcp: Fix data races around icsk->icsk_af_ops. 2024-07-05 09:14:51 +02:00
tcp_bbr.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_bic.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_bpf.c bpf, sockmap: Handle fin correctly 2024-05-17 11:50:56 +02:00
tcp_cdg.c tcp: cdg: allow tcp_cdg_release() to be called multiple times 2022-11-26 09:24:50 +01:00
tcp_cong.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_cubic.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_dctcp.c tcp: Fix shift-out-of-bounds in dctcp_update_alpha(). 2024-06-16 13:39:47 +02:00
tcp_dctcp.h
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tcp_diag.c
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tcp_fastopen.c tcp: annotate data-races around fastopenq.max_qlen 2023-07-27 08:47:04 +02:00
tcp_highspeed.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_htcp.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_hybla.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_illinois.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_input.c tcp: fix incorrect undo caused by DSACK of TLP retransmit 2024-07-18 13:07:37 +02:00
tcp_ipv4.c tcp: avoid premature drops in tcp_add_backlog() 2024-06-16 13:39:22 +02:00
tcp_lp.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_metrics.c tcp_metrics: validate source addr length 2024-07-18 13:07:30 +02:00
tcp_minisocks.c tcp: Use BPF timeout setting for SYN ACK RTO 2024-07-05 09:14:41 +02:00
tcp_nv.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_offload.c
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tcp_output.c tcp: defer shutdown(SEND_SHUTDOWN) for TCP_SYN_RECV sockets 2024-05-17 11:50:57 +02:00
tcp_rate.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_recovery.c tcp: fix excessive TLP and RACK timeouts from HZ rounding 2023-10-25 11:58:57 +02:00
tcp_scalable.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_timer.c tcp: avoid too many retransmit packets 2024-07-18 13:07:40 +02:00
tcp_ulp.c net/ulp: use consistent error code when blocking ULP 2023-01-24 07:22:48 +01:00
tcp_vegas.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_vegas.h
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tcp_veno.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_westwood.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tcp_yeah.c tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:36:11 +02:00
tunnel4.c
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udp.c udp: Set SOCK_RCU_FREE earlier in udp_lib_get_port(). 2024-07-18 13:07:38 +02:00
udp_bpf.c bpf, sockmap: Fix an infinite loop error when len is 0 in tcp_bpf_recvmsg_parser() 2023-03-17 08:48:54 +01:00
udp_diag.c
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udp_impl.h
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udp_offload.c net: gro: add flush check in udp_gro_receive_segment 2024-05-17 11:50:51 +02:00
udp_tunnel_core.c net/tunnel: wait until all sk_user_data reader finish before releasing the sock 2022-12-31 13:14:19 +01:00
udp_tunnel_nic.c
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udp_tunnel_stub.c
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udplite.c udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated(). 2023-05-30 13:55:31 +01:00
xfrm4_input.c xfrm: Preserve vlan tags for transport mode software GRO 2024-05-17 11:50:57 +02:00
xfrm4_output.c
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xfrm4_policy.c
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xfrm4_protocol.c net: xfrm: unexport __init-annotated xfrm4_protocol_init() 2022-06-14 18:36:18 +02:00
xfrm4_state.c
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xfrm4_tunnel.c
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