networking [tcp] · Maintained

Maintainers

• M Eric Dumazet <edumazet@google.com>
• M Neal Cardwell <ncardwell@google.com>
• R Kuniyuki Iwashima <kuniyu@google.com>

Paths

• F Documentation/networking/net_cachelines/tcp_sock.rst
• F include/linux/tcp.h
• F include/net/tcp.h
• F include/trace/events/tcp.h
• F include/uapi/linux/tcp.h
• F net/ipv4/inet_connection_sock.c
• F net/ipv4/inet_hashtables.c
• F net/ipv4/inet_timewait_sock.c
• F net/ipv4/syncookies.c
• F net/ipv4/tcp*.c
• F net/ipv6/inet6_connection_sock.c
• F net/ipv6/inet6_hashtables.c
• F net/ipv6/syncookies.c
• F net/ipv6/tcp*.c

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH 00/13 RFC net-next] Allow compiling an IPv6-only kernel network stack
  2026-07-12 01:40 · 2 replies in 7d · Fernando Fernandez Mancera <hidden>
• WARM2d [RFC 0/9] optimise zcrx refs cache bouncing
  2026-07-11 09:22 · 1 reply in 7d · Pavel Begunkov <asml.silence@gmail.com>
• DORMANTno replies [PATCH net v4 1/1] tcp: bound SYN-ACK timers to reqsk timeout range
  2026-07-11 07:28 · 0 replies in 7d · Ren Wei <hidden>
• COOLING6d [PATCH net-next] net/tcp: Add explicit tracepoint for tcp_syn_ack_timeout()
  2026-07-07 01:01 · 0 replies in 7d · Emil Tsalapatis <emil@etsalapatis.com>

Active reviewers (last 30 days)

• Yuan Tan <hidden>
  4 attestations (4 Reported-by) · last on 2026-07-11
• Yifan Wu <hidden>
  4 attestations (4 Reported-by) · last on 2026-07-11
• Juefei Pu <hidden>
  4 attestations (4 Reported-by) · last on 2026-07-11
• Xin Liu <hidden>
  4 attestations (4 Reported-by) · last on 2026-07-11
• Eric Dumazet <edumazet@google.com>
  1 attestation (1 Suggested-by) · last on 2026-06-26
• Gang Yan <hidden>
  1 attestation (1 Co-developed-by) · last on 2026-06-22
• Zqiang <qiang.zhang@linux.dev>
  1 attestation (1 Co-developed-by) · last on 2026-06-22

Recent patches

Most-recent 30 patches in this subsystem on netdev (capped at 30), ordered by date desc.

• HOTtoday [PATCH 04/13 RFC net-next] net: tcp: move protocol agnostic TCP functions out of tcp_ipv4.c
  2026-07-12 · Fernando Fernandez Mancera <hidden>
• HOTtoday [PATCH 02/13 RFC net-next] net: core: add IPv4 fallback stubs and guards for CONFIG_IPV4=n
  2026-07-12 · Fernando Fernandez Mancera <hidden>
• WARM2d [RFC 1/9] net: allow __tcp_read_sock actors to steal skbs
  2026-07-11 · Pavel Begunkov <asml.silence@gmail.com>
• DORMANTno replies [PATCH net v4 1/1] tcp: bound SYN-ACK timers to reqsk timeout range
  2026-07-11 · Ren Wei <hidden>
• COOLING6d [PATCH net-next] net/tcp: Add explicit tracepoint for tcp_syn_ack_timeout()
  2026-07-07 · Emil Tsalapatis <emil@etsalapatis.com>
• HOTtoday [PATCH bpf-next v3 12/15] bpf: tcp: Support parse/len/write header option hooks in bpf_tcp_ops
  2026-07-06 · Amery Hung <hidden>
• HOTtoday [PATCH bpf-next v3 11/15] bpf: tcp: Support selected sock_ops callbacks as struct_ops
  2026-07-06 · Amery Hung <hidden>
• COOLING4d [PATCH net v3 1/1] tcp: bound SYN-ACK timers to reqsk timeout range
  2026-07-02 · Ren Wei <hidden>
• COOLING4d [PATCH v3 net-next 1/1] tcp: Replace min_tso_segs() with tso_segs() CC callback
  2026-06-30 · <hidden>
• COOLING13d [PATCH net v2 1/1] tcp: bound SYN-ACK timers to reqsk timeout range
  2026-06-30 · Ren Wei <hidden>
• COOLING14d [PATCH net 1/1] tcp: bound SYN-ACK timers to reqsk timeout range
  2026-06-28 · Ren Wei <hidden>
• COOLING13d [PATCH net-next v1] tcp/dccp: avoid parity split for socket-local bind range
  2026-06-26 · <hidden>
• COOLING12d [PATCH bpf-next v2 12/15] bpf: tcp: Support parse/len/write header option hooks in bpf_tcp_ops
  2026-06-23 · Amery Hung <hidden>
• COOLING12d [PATCH bpf-next v2 11/15] bpf: tcp: Support selected sock_ops callbacks as struct_ops
  2026-06-23 · Amery Hung <hidden>
• COLD17d [RFC net-next 11/17] mptcp: implement mptcp-specific tls protocol ops
  2026-06-22 · Geliang Tang <geliang@kernel.org>
• COLD27d [PATCH v14 1/2] tcp: rehash onto different local ECMP path on retransmit timeout
  2026-06-15 · Neil Spring <hidden>
• COLD26d [PATCH v2 net-next 1/1] tcp: Replace min_tso_segs() with tso_segs() CC callback for TCP Prague
  2026-06-14 · <hidden>
• COLD29d [PATCH v1 net-next 1/1] tcp: Replace min_tso_segs() with tso_segs() CC callback for TCP Prague
  2026-06-13 · <hidden>
• COLD30d [RFC PATCH bpf-next 1/5] tcp_bpf: add bpf_sock_splice_pair kfunc for opportunistic loopback splice
  2026-06-12 · Cong Wang <hidden>
• COLD29d [PATCH net-next v13 1/2] tcp: rehash onto different local ECMP path on retransmit timeout
  2026-06-12 · Neil Spring <hidden>
• COLD32d [PATCH v1 net-next 4/4] tcp: Add mss_cache_set_by_cca for CC algorithm to set MSS
  2026-06-11 · <hidden>
• COLD32d [PATCH v1 net-next 3/4] tcp: Add tso_segs() CC callback for TCP Prague
  2026-06-11 · <hidden>
• COLD32d [PATCH v1 net-next 1/4] tcp: accecn: Add ece_delta to rate_sample
  2026-06-11 · <hidden>
• COLD32d [PATCH v1 net-next 2/4] tcp: ECT_1_ESTABLISH identifier for CA
  2026-06-11 · <hidden>
• COLD30d [PATCH net-next v2 2/2] net: remove some unused EXPORT_SYMBOL()s
  2026-06-11 · Sabrina Dubroca <sd@queasysnail.net>
• COLD30d [PATCH net v3] tcp: clear sock_ops cb flags before force-closing a child socket
  2026-06-11 · Sechang Lim <hidden>
• COLD32d [PATCH net v2] tcp: clear sock_ops cb flags before force-closing a child socket
  2026-06-10 · Sechang Lim <hidden>
• COLD32d [PATCH net-next 2/2] net: remove some unused EXPORT_SYMBOL()s
  2026-06-09 · Sabrina Dubroca <sd@queasysnail.net>
• COLD33d [PATCH net-next 04/10] tcp: decouple TSO segment length from MSS
  2026-06-08 · Mariusz Klimek <hidden>
• COLD33d [PATCH net] tcp: clear sock_ops cb flags before force-closing a child socket
  2026-06-05 · Sechang Lim <hidden>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE154d REVIEWED: 1 (0M) [PATCH RFC net-next] inet: add ip_retry_random_port sysctl to reduce sequential port retries
  2026-02-03 · Fernando Fernandez Mancera <hidden> · 1 Tested-by
• STALE158d REVIEWED: 3 (3M) [PATCH v2 net-next 1/4] inet: move reqsk_queue_alloc() to net/ipv4/inet_connection_sock.c
  2026-02-04 · Eric Dumazet <edumazet@google.com> · 1 Reviewed-by
• STALE106d REVIEWED: 3 (3M) [PATCH v2 net-next] tcp: use __jhash_final() in inet6_ehashfn()
  2026-03-27 · Eric Dumazet <edumazet@google.com> · 1 Reviewed-by
• STALE67d REVIEWED: 1 (0M) [PATCH net 1/1] mptcp: hold subflow request owners when cloning reqsk
  2026-04-15 · Ren Wei <hidden> · 1 Tested-by
• STALE74d REVIEWED: 7 (7M) [PATCH net-next v2 5/5] net/tcp: Remove tcp_sigpool
  2026-04-27 · Eric Biggers <ebiggers@kernel.org> · 1 Reviewed-by
• STALE61d REVIEWED: 1 (0M) [PATCH net v2 1/1] mptcp: fix request ownership when cloning reqsk
  2026-05-10 · Ren Wei <hidden> · 1 Tested-by
• STALE61d REVIEWED: 6 (6M) [PATCH v2 net-next 3/3] ipv6: use SKB_DROP_REASON_IP_OUTNOROUTES in inet6_csk_xmit()
  2026-05-11 · Eric Dumazet <edumazet@google.com> · 2 Reviewed-by
• COLD54d REVIEWED: 1 (0M) [PATCH net v2 1/2] tcp: Don't accept data when socket is in repair mode
  2026-05-18 · Stefano Brivio <hidden> · 1 Tested-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE179d [PATCH v8 net-next 10/14] tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion
  2026-01-15 · <hidden>
• STALE177d [PATCH net-next 3/3] gro: inline tcp6_gro_complete()
  2026-01-16 · Eric Dumazet <edumazet@google.com>
• STALE174d [PATCH v2 net-next 2/3] gro: inline tcp6_gro_receive()
  2026-01-18 · Eric Dumazet <edumazet@google.com>
• STALE174d [PATCH v2 net-next 3/3] gro: inline tcp6_gro_complete()
  2026-01-18 · Eric Dumazet <edumazet@google.com>
• STALE172d [PATCH v3 net-next 2/3] gro: inline tcp6_gro_receive()
  2026-01-20 · Eric Dumazet <edumazet@google.com>
• STALE172d [PATCH v3 net-next 3/3] gro: inline tcp6_gro_complete()
  2026-01-20 · Eric Dumazet <edumazet@google.com>
• DORMANTno replies [PATCH v1 iproute2-next 1/1] tcp: accecn: add tcpi_ecn_mode and tcpi_option2 in tcp_info
  2026-01-23 · <hidden>
• STALE153d [PATCH net-next 1/3] tcp: inline __tcp_v4_send_check()
  2026-02-03 · Eric Dumazet <edumazet@google.com>
• STALE154d Re: [PATCH RFC net-next] inet: add ip_retry_random_port sysctl to reduce sequential port retries
  2026-02-04 · Fernando Fernandez Mancera <hidden>
• STALE137d [PATCH RFC net-next v2 1/5] tcp: implement RFC 7323 window retraction receiver requirements
  2026-02-26 · Simon Baatz via B4 Relay <devnull+gmbnomis.gmail.com@kernel.org>