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smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BrySdxV3; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BrySdxV3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2FFC7C116C6 for ; Tue, 10 Feb 2026 16:59:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770742748; bh=qbCF6la6pa55E/qyWRmsImDHfo26fHfgZXzCwRrI8cI=; h=Date:From:To:Subject:From; b=BrySdxV3xTqtrS2C8Hc7WYLCSbZ2X+04nWXRbD0mXQWl0o0pCBtmMaQnIcoZOK4Ql 0fc4hETJFadTSvH2zbmpDQ3FsGn35gqGInu/kH/GwQmPrrGbqxbCrhuNwWdA/jpqoS B2hJ5xcySuTHhkoIcQwIrlOGt2j0XpxqaIEzlYTz7t9DVj2Jd8SK8CD1YQwHwZJdsR VznFR+XmL6ecRi11a4AibqzGhbstr9irjzIRhvQRxTE2G/UNiRiHtkESbfkUM/kKgM DPfDwsus6IO2LiATO9oKB6SonKyE+93Y6bSdSeRTjReSx3XtrrgRbR6h3PCpJzOvui G0eM9PlgjbalQ== Message-ID: <0bd86581-1c61-4a9e-a1ef-bfb5be56efb7@kernel.org> Date: Tue, 10 Feb 2026 17:59:04 +0100 Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta From: Matthieu Baerts Content-Language: en-GB, fr-BE To: MPTCP Linux Subject: [Weekly meetings] MoM - 28th of January 2026 Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit Hello everyone, Two weeks ago, we had our new meeting with Mat (Cruise), and myself (NGI0 Core). Thanks again for this new good meeting! Here are the minutes of the meeting: Accepted patches: - The list of accepted patches can be seen on PatchWork: https://patchwork.kernel.org/project/mptcp/list/?state=3 netdev (if mptcp ML is in cc) (by: /): 14397354: [net,v3] mptcp: fix race in mptcp_pm_nl_flush_addrs_doit(): - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/patch/20260124-net-mptcp-race_nl_flush_addrs-v3-1-b2dc1b613e9d@kernel.org/ our repo (by: Matthieu Baerts (NGI0)): 14345568: [mptcp-next] selftests: mptcp: join: no SKIP mark for group checks: - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/patch/20251211-sft-no-skip-new-cnt-v1-1-6dd6d70f8242@kernel.org/ 14357713: [mptcp-net] selftests: mptcp: join: fix local endp not being tracked: - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/patch/20251222-sft-5-15-signal-race-test-v1-1-a9b67c49af15@kernel.org/ 14399979: [mptcp-net,v2,01/11] mptcp: avoid dup SUB_CLOSED events after disconnect 14399980: [mptcp-net,v2,02/11] selftests: mptcp: check no dup close events after error 14399981: [mptcp-net,v2,03/11] mptcp: only reset subflow errors when propagated 14399982: [mptcp-net,v2,04/11] selftests: mptcp: check subflow errors in close events 14399983: [mptcp-net,v2,05/11] selftests: mptcp: join: wait for estab event instead of MPJ 14399984: [mptcp-net,v2,06/11] selftests: mptcp: join: fix wait_mpj helper 14399985: [mptcp-net,v2,07/11] selftests: mptcp: join: userspace: wait for new events 14399986: [mptcp-net,v2,08/11] selftests: mptcp: join chk_stale_nr: avoid dup stats 14399987: [mptcp-net,v2,09/11] selftests: mptcp: join: avoid declaring i if not used 14399988: [mptcp-net,v2,10/11] selftests: mptcp: connect: fix maybe-uninitialize warn 14399989: [mptcp-net,v2,11/11] selftests: mptcp: connect cleanup TFO setup: - Series: mptcp: avoid dup events + error + misc. - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1047262&state=*&archive=both Pending patches: - The list of pending patches can be seen on PatchWork: https://patchwork.kernel.org/project/mptcp/list/?state=* netdev (if mptcp ML is in cc) (by: Matthieu Baerts (NGI0), Thomas Weißschuh): 14390237: [net-next,v2,1/4] selftests: net: Move some UAPI header inclusions after libc ones 14390236: [net-next,v2,2/4] selftests/landlock: Move some UAPI header inclusions after libc ones 14390238: [net-next,v2,3/4] samples/bpf: Move some UAPI header inclusions after libc ones 14390239: [net-next,v2,4/4] net: uapi: Provide an UAPI definition of 'struct sockaddr': - Series: net: uapi: Provide an UAPI definition of 'struct sockaddr' - Submitter: Thomas Weißschuh - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1044679&state=*&archive=both 14401808: [net,1/5] mptcp: avoid dup SUB_CLOSED events after disconnect 14401809: [net,2/5] selftests: mptcp: check no dup close events after error 14401810: [net,3/5] mptcp: only reset subflow errors when propagated 14401811: [net,4/5] selftests: mptcp: check subflow errors in close events 14401812: [net,5/5] selftests: mptcp: join: fix local endp not being tracked: - Series: mptcp: avoid dup NL events and propagate error - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1047756&state=*&archive=both our repo (by: Christoph Paasch, Gang Yan, GangYan, Geliang Tang, Gregory Detal, Matthieu Baerts, Matthieu Baerts (NGI0)): 12282223: [RESEND,RFC,mptpcp-next] mptcp: add ooo prune support: 13070467: [mptcp-next,v4,1/2] mptcp: update mptcp_push_release 13070468: [mptcp-next,v4,2/2] mptcp: retrans for redundant sends: - State: Changes requested - Series: BPF redundant scheduler, part 3 - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=703615&state=*&archive=both - Status: same as last time 13305089: [mptcp-next,1/6] mptcp: sockopt: move tcp_inq code to a dedicated function 13305091: [mptcp-next,2/6] mptcp: sockopt: update supported list 13305093: [mptcp-next,3/6] mptcp: sockopt: get val in a generic way 13305090: [mptcp-next,4/6] mptcp: sockopt: add missing getsockopt() options 13305094: [mptcp-next,5/6] mptcp: sockopt: set val in a generic way 13305092: [mptcp-next,6/6] mptcp: sockopt: support IP_TTL & IPV6_UNICAST_HOPS: - State: Changes requested - Series: mptcp: sockopt: uniform code to get/set values - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=763505&state=*&archive=both - Status: same as last time 13583230: [RFC] mptcp: react scheduler when subflow events pop up: - State: Changes requested - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/patch/433320c3a9db77bea53a34fc9c43a3c7e3320399.1709693691.git.tanggeliang@kylinos.cn/ - Status: same as last time 13675217: [mptcp-next,RFC,1/4] mptcp: add push sched callback 13675218: [mptcp-next,RFC,2/4] mptcp: use new push callback to schedule chunks 13675219: [mptcp-next,RFC,3/4] mptcp: bpf: allow to write to mptcp_sched_chunk 13675220: [mptcp-next,RFC,4/4] selftests/bpf: mptcp RR: send 1 MSS on each subflow: - State: RFC - Series: mptcp: update scheduler API - Submitter: Gregory Detal - URL: https://patchwork.kernel.org/project/mptcp/list/?series=856158&state=*&archive=both - Status: same as last time 13932555: [1/3] mptcp: fix invalid addr occupy 'add_addr_accepted' 13932556: [2/3] selftests: mptcp: relax conditions in SYN_TX validation 13932546: [3/3] selftests: mptcp: add a testcase for invalid addr timeout: - State: Changes requested - Series: [1/3] mptcp: fix invalid addr occupy 'add_addr_accepted' - Submitter: Gang Yan - URL: https://patchwork.kernel.org/project/mptcp/list/?series=923771&state=*&archive=both - Status: same as last time 14024767: [mptcp-next,v1,1/4] bpf: Add mptcp path manager struct_ops 14024768: [mptcp-next,v1,2/4] bpf: Export mptcp path manager kfuncs 14024769: [mptcp-next,v1,3/4] selftests/bpf: Add mptcp netlink pm subtest 14024770: [mptcp-next,v1,4/4] selftests/bpf: Add mptcp bpf_netlink pm subtest: - State: Changes requested - Series: BPF path manager, part 7 - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=946095&state=*&archive=both - Status: same as last time 14053397: [mptcp-next,v3,1/3] mptcp: pm: userspace: drop delete_local_addr helper 14053398: [mptcp-next,v3,2/3] selftests: mptcp: join: update userspace dump_addr outputs 14053399: [mptcp-next,v3,3/3] selftests: mptcp: userspace: send RM_ADDR between server and client: - State: Under review - Series: only remove entry from local_addr_list when sending a REMOVE_ADDR - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=953862&state=*&archive=both - Status: same as last time 14167004: [mptcp-next] mptcp: remove redundant orig_offset in carve_data_frag: - State: Changes requested - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/patch/9c663fc37767d9036379afdbc83cd8874a7b2fc9.1753337130.git.tanggeliang@kylinos.cn/ - Status: same as last time 14175678: [mptcp-next,1/2] mptcp: Add support for SO_MAX_PACING_RATE 14175679: [mptcp-next,2/2] selftests: Add tests for SO_MAX_PACING_RATE: - State: Changes requested - Series: mptcp: Add support for SO_MAX_PACING_RATE - Submitter: Christoph Paasch - URL: https://patchwork.kernel.org/project/mptcp/list/?series=987909&state=*&archive=both - Status: same as last time 14185125: [mptcp-next,1/6] mptcp: add helper for setsockopt on first subflow only 14185126: [mptcp-next,2/6] mptcp: handle SOL_SOCKET options on first subflow only 14185128: [mptcp-next,3/6] mptcp: refactor IP socket option handling for first subflow 14185127: [mptcp-next,4/6] mptcp: extract IPv6 socket option handling for first subflow 14185129: [mptcp-next,5/6] mptcp: handle SOL_TCP options on all subflows 14185130: [mptcp-next,6/6] mptcp: handle IP socket options on all subflows: - State: Needs ack - Series: refactor MPTCP socket option handling - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=990414&state=*&archive=both - Status: same as last time 14185142: [mptcp-next,v2,1/3] mptcp: add IPV6_TCLASS socket option support 14185143: [mptcp-next,v2,2/3] mptcp: add IP_TTL socket option support 14185144: [mptcp-next,v2,3/3] mptcp: add IPV6_UNICAST_HOPS socket option support: - State: Needs ack - Series: mptcp: add more sockopts - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=990418&state=*&archive=both - Status: same as last time 14197780: [mptcp-next,v2,01/10] selftests: mptcp: sockopt: improve test output clarity 14197781: [mptcp-next,v2,02/10] selftests: mptcp: sockopt: add SO_REUSEADDR test helper 14197782: [mptcp-next,v2,03/10] selftests: mptcp: sockopt: add SO_REUSEPORT test 14197783: [mptcp-next,v2,04/10] selftests: mptcp: sockopt: add SO_BINDTODEVICE test 14197784: [mptcp-next,v2,05/10] selftests: mptcp: sockopt: add SO_BINDTOIFINDEX test 14197785: [mptcp-next,v2,06/10] selftests: mptcp: sockopt: add IP_FREEBIND tests 14197786: [mptcp-next,v2,07/10] selftests: mptcp: sockopt: add IP_TRANSPARENT tests 14197787: [mptcp-next,v2,08/10] selftests: mptcp: sockopt: add IP_BIND_ADDRESS_NO_PORT test 14197788: [mptcp-next,v2,09/10] selftests: mptcp: sockopt: add IP_LOCAL_PORT_RANGE test 14197789: [mptcp-next,v2,10/10] selftests: mptcp: sockopt: add IPV6_V6ONLY test: - State: Changes requested - Series: selftests: cover more MPTCP socket options - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=993905&state=*&archive=both - Status: same as last time 14215849: [mptcp-net,v2,1/3] selftests: mptcp: close server file descriptor 14215850: [mptcp-net,v2,2/3] selftests: mptcp: close IPC descriptor on server side 14229120: [mptcp-next,v4,1/9] selftests: mptcp: sockopt: replace /dev/urandom with getrandom 14229121: [mptcp-next,v4,2/9] selftests: mptcp: sockopt: add protocol arguments 14229122: [mptcp-next,v4,3/9] selftests: mptcp: sockopt: add inq argument 14229123: [mptcp-next,v4,4/9] selftests: mptcp: sockopt: rename pipefd to ipcfd 14229124: [mptcp-next,v4,5/9] selftests: mptcp: sockopt: set TCP_INQ sockopt 14229125: [mptcp-next,v4,6/9] selftests: mptcp: sockopt: handle INQ on server side 14229126: [mptcp-next,v4,7/9] selftests: mptcp: sockopt: handle INQ on client side 14229127: [mptcp-next,v4,8/9] selftests: mptcp: sockopt: replace mptcp_inq with sockopt 14229128: [mptcp-next,v4,9/9] selftests: mptcp: sockopt: remove obsolete mptcp_inq: - State: Changes requested - Series: selftests: consolidate TCP_INQ testing into sockopt - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1001827&state=*&archive=both - Status: same as last time 14330153: [RFC,mptcp-next,v2,1/7] mptcp: allow overridden write_space to be invoked 14330154: [RFC,mptcp-next,v2,2/7] mptcp: add sock_set_reuseaddr 14330155: [RFC,mptcp-next,v2,3/7] mptcp: add sock_set_nodelay 14330156: [RFC,mptcp-next,v2,4/7] nvmet-tcp: add mptcp support 14330157: [RFC,mptcp-next,v2,5/7] mptcp: add sock_set_syncnt 14330158: [RFC,mptcp-next,v2,6/7] nvme-tcp: add mptcp support 14330159: [RFC,mptcp-next,v2,7/7] selftests: mptcp: add NVMe-over-MPTCP test: - State: Needs ack - Series: NVME over MPTCP - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1027779&state=*&archive=both - Status: same as last time 14332026: [RFC,mptcp-next] mptcp: support net.ipv4.tcp_rcvbuf_low_rtt: - State: Changes requested - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/patch/20251127-mptcp-tcp_rcvbuf_low_rtt-v1-1-fa080d67f2e5@kernel.org/ - Status: same as last time 14332838: [mptcp-net] mptcp: sync the msk->sndbuf at accept() time: - State: Changes requested - Submitter: GangYan - URL: https://patchwork.kernel.org/project/mptcp/patch/20251128094417.14463-1-gang.yan@linux.dev/ - Status: same as last time 14346887: [mptcp-next,1/3] tcp: add recv_should_stop helper 14346888: [mptcp-next,2/3] mptcp: use recv_should_stop helper 14346889: [mptcp-next,3/3] tls: use recv_should_stop helper: - State: Changes requested - Series: add tcp_recv_should_stop helper - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1032825&state=*&archive=both - Status: same as last time 14348921: [mptcp-net,1/2] mptcp: pm: in-kernel: always set as unavail when removing addr 14348922: [mptcp-net,2/2] mptcp: pm: in-kernel: clarify mptcp_pm_remove_anno_addr(): - State: Changes requested - Series: mptcp: pm: in-kernel: fix issue 606 - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1033402&state=*&archive=both - Matth will look at a v2 14365754: [mptcp-next,v2,1/3] mptcp: implement psock_update_sk_prot 14365755: [mptcp-next,v2,2/3] mptcp: allow overridden write_space to be invoked 14365756: [mptcp-next,v2,3/3] selftests/bpf: Update sockmap tests for MPTCP: - State: Needs ack - Series: implement psock_update_sk_prot - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1038151&state=*&archive=both - Status: same as last time 14378488: [RFC,mptcp-next,v8,1/9] selftests: mptcp: add tcp tls tests 14378489: [RFC,mptcp-next,v8,2/9] tls: introduce struct tls_prot_ops 14378490: [RFC,mptcp-next,v8,3/9] tls: add ops in tls_context 14378491: [RFC,mptcp-next,v8,4/9] mptcp: allow overridden write_space to be invoked 14378492: [RFC,mptcp-next,v8,5/9] mptcp: update mptcp_check_readable 14378493: [RFC,mptcp-next,v8,6/9] mptcp: implement tls_mptcp_ops 14378494: [RFC,mptcp-next,v8,7/9] mptcp: update ULP getsockopt 14378495: [RFC,mptcp-next,v8,8/9] mptcp: enable TLS setsockopt 14378496: [RFC,mptcp-next,v8,9/9] selftests: mptcp: add mptcp tls tests: - State: Needs ack - Series: MPTCP KTLS support - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1041671&state=*&archive=both - Status: same as last time 14382486: [net-next,v2] selftests: tls: use mkstemp instead of open(O_TMPFILE): - State: Rejected - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/patch/2fa14a04f5287c956a1112cef8cdfb2c86931d2d.1768467496.git.tanggeliang@kylinos.cn/ Issues on GitHub: https://github.com/multipath-tcp/mptcp_net-next/issues/ Recently opened (latest from the last meeting: 610): / Recently discussed: 610 MPTCP tree in `linux-next` [enhancement] Bugs (opened, flagged as "bug" and assigned) 606 [syzkaller] WARNING in `mptcp_pm_nl_set_flags` [bug] [syzkaller] [reproducer] @matttbe 575 sockopt: support `TCP_MD5SIG` and `TCP_MD5SIG_EXT` for transparent integrations [bug] @geliangtang 498 in-kernel PM: closed subflows before `RM_ADDR` will not decrement `add_addr_accepted` [bug] [pm] @geliangtang 484 BPF: `setsockopt` on an MPTCP socket: check support [bug] [bpf] @geliangtang 445 MPTCP Info counters: start seq numbers ones from 0 [bug] @geliangtang 403 userspace pm: only remove entry from `local_addr_list` when sending a `REMOVE_ADDR` [bug] [pm] @geliangtang 343 scheduler: react when subflow-level events pop up (ACK/RTO) [bug] [sched] @geliangtang Bugs (opened and flagged as "bug" and not assigned) 609 [6.17] soft lockup in `mptcp_sendmsg_frag` [bug] 608 [syzbot] WARNING in `__mptcp_move_skbs_from_subflow (2)` [bug] [syzkaller] 607 selftests: `simult_flows`: "unbalanced bwidth with opposed, unbalanced delay" (+ "reverse direction") are unstable [bug] [selftests] [reproducer] [bisected] 605 [syzkaller] KASAN: stack-out-of-bounds Read in `mptcp_pm_kernel_get_priority` [bug] [syzkaller] 600 mptcp: avoid dropping partial packets [bug] 599 [syzbot] possible deadlock in `mptcp_subflow_create_socket`: `nbd` has a lockdep dependency between `reclaim` and `af_socket` [bug] [syzkaller] 592 Lower throughput with MPTCP vs TCP [bug] 587 in-kernel PM: Server is only using single IP to establish subflows [bug] 583 KMemLeak: from `mptcp_sk_clone_init()` [bug] [selftests] 581 Default scheduler under-utilizes newly restored subflows on long-lived flows after WAN failback [bug] 572 [syzkaller] WARNING in `skb_try_coalesce` [bug] [syzkaller] 549 pm: in-kernel: set `msk->pm.work_pending` back to `true` [bug] [pm] 492 userspace pm: subflows counter: not updated when a subflows is removed from the other end [bug] 491 selftests: `mptcp_join`: tests `Infinite map` & `MP_FAIL MP_RST` are unstable [bug] [selftests] 483 [6.1] selftests: `mptcp_connect.sh` failures with `copyfd_io_poll: poll timed out` errors [bug] [selftests] 475 `simult_flows`: unbalanced bwidth tests are unstable [bug] [selftests] 439 mptcp vs net.ipv4.tcp_shrink_window [bug] 336 Issues with BPF packet scheduler [bug] [sched] [bpf] In Progress (opened, new feature and assigned) 568 socket option: support `IPV6_TCLASS` [enhancement] @geliangtang 521 Implement psock_update_sk_prot, for eBPF SOCKMAP support [enhancement] [bpf] @geliangtang 480 MPTCP and KTLS support [enhancement] @geliangtang 434 in-kernel PM: increase subflows limit [enhancement] [pm] @matttbe 353 sockopt: uniform code to get/set values [enhancement] @matttbe 349 scheduler: (un)mark a subflow as "stale" [enhancement] [sched] @geliangtang 296 Support IP_TTL & IPV6_UNICAST_HOPS [enhancement] @matttbe 167 packetdrill: add coverage for RM_ADDR [enhancement] [packetdrill] @dcaratti 75 BPF: packet scheduler [enhancement] [sched] [bpf] @geliangtang 74 BPF: path manager [enhancement] [pm] [bpf] @geliangtang Assigned Questions (opened, questions and assigned) 548 disable mptcp for an interface [question] @matttbe Open questions (opened, questions and not assigned) 602 A query about the update of 'msk->sk_sndbuf' [question] 562 [performance] How much is the overhead of MPTCP？ [question] For later (opened and not assigned) 610 MPTCP tree in `linux-next` [enhancement] 590 in-kernel PM: use either `subflow` or `signal` depending on connector/listener app [enhancement] 588 in-kernel PM: support NUMA awareness [enhancement] [feedback-needed] 584 [syzkaller] improve coverage [syzkaller] 578 sockopt: support `SO_MAX_PACING_RATE` to limit the whole MPTCP connection [enhancement] 566 pm: use `signal` + `subflow` + `fullmesh` [enhancement] [pm] 556 Implement all required bits to C/R MPTCP connections from user-space (CRIU) [enhancement] 552 pm: in-kernel: delay before creating new subflows [enhancement] 545 Deal with multiple pure TCP ACK without MPTCP options [enhancement] 543 TCPDump: display `MP_TCPRST` info [enhancement] 542 in-kernel PM: limit to one subflow per network interface for each connection [enhancement] [pm] 535 TCPDump: display `MP_CAPABLE` C flag [enhancement] 525 tests: cover more MPTCP socket options [enhancement] [packetdrill] [selftests] 519 Reset the connection once "MPTCP has been verified" instead of a fallback [enhancement] 511 Add MIB counters for sent `MPTCP_RST_EMPTCP` [enhancement] 497 in-kernel PM: check to create new subflows when some are destroyed [enhancement] [pm] 496 in-kernel PM: store received `ADD_ADDR` [enhancement] [pm] 481 remove refcount on TCP sockets for the timers [enhancement] 467 Scheduler: add redundant scheduler support in BPF [enhancement] [sched] 462 selftests: print (and set?) random seed [enhancement] [selftests] 461 Protocol: extend Data-Level Length field [enhancement] [protocol] 448 Allow sending ADD_ADDR IPv6 with port-number if TCP-timestamps are enabled [enhancement] 441 optimize established options generation [enhancement] 440 in-kernel PM: re-establish subflows after "network" errors [enhancement] [pm] 426 selftests: validate listener sockets with multiple accepts [enhancement] [selftests] 389 packetdrill: increase coverage for "early `close()`" cases [enhancement] [packetdrill] 350 scheduler: API changes (tasks) [enhancement] [sched] 348 scheduler: frequently probe "stale" subflow with reinjected data [enhancement] [sched] 345 scheduler: "penalise" some subflows by sending less than their cwnd [enhancement] [sched] 344 scheduler: new callback to initiate optimisations [enhancement] [sched] 337 in-kernel PM: listen socket: support "behind a NAT" use case [enhancement] [pm] 335 Server to Client subflows: option to allow joining the initial address and port [enhancement] [pm] 334 in-kernel PM: send >1 ADD_ADDR before the establishment of a new subflow [enhancement] [pm] 332 scheduler: implement a "opportunistic retransmission" [enhancement] [sched] 289 mptcp: audit comments for non inclusive language [enhancement] 273 Packetdrill: test outgoing MP_FASTCLOSE [enhancement] [packetdrill] 266 Packetdrill: add MP_FAIL coverage [packetdrill] 236 Review supported sockopts list [enhancement] 234 Packetdrill: Support MPC+DATA+checksum error [enhancement] [packetdrill] 222 Netlink event API: add SUBFLOW_CREATED event [enhancement] 215 TCP Urgent pointer and MPTCP [enhancement] 213 add MPTCP man page [enhancement] 208 better handing of ssk memory pressure in the TX path [enhancement] 202 Add sendmsg support for ancillary data [enhancement] 180 Get an update when MPTCP fall back to TCP [enhancement] 177 improve retransmit subflow selection [enhancement] 169 packetdrill: add coverage for ADD_ADDR and MP_JOIN on a different port [enhancement] [packetdrill] 150 remove completely workqueue usage [enhancement] 141 avoid acquiring mptcp_data_lock() twice in the receive path [enhancement] 78 notify the application (userspace) when a subflow is added/removed [enhancement] 41 reduce indirect call usage [enhancement] 24 Revisit layout of struct mptcp_subflow_context [enhancement] Recently closed (since 2026-01-14) 611 [syzbot] KASAN: stack-out-of-bounds Read in `mptcp_pm_nl_get_local_id` [bug] [syzkaller] 603 Repeated MPTCP_EVENT_SUB_CLOSED events with corrupted addresses (0.0.0.0) [bug] @matttbe Packetdrill PRs 162 2 months ago geliangtang mptcp: add splice test 52 1 year ago dcaratti Add initial coverage for RM_ADDR mptcp.dev PRs: / mptcpd PRs: / TODO: track mptcp-upstream-virtme-docker repo → Done FYI: Current Roadmap: - Bugs: https://github.com/multipath-tcp/mptcp_net-next/issues?q=is%3Aissue+is%3Aopen+label%3Abug - Current/Coming merge window (6.20/7.0): https://github.com/orgs/multipath-tcp/projects/18 - For later: https://github.com/orgs/multipath-tcp/projects/1 Patches to send to NetDev: - Fixes for other trees: / - Fixes for -net: - [76f15f869c88] selftests: mptcp: join: fix local endp not being tracked (Matthieu Baerts (NGI0)) - [f0eeb24a3c4b] mptcp: avoid dup SUB_CLOSED events after disconnect (Matthieu Baerts (NGI0)) - [732bf4eb2d58] selftests: mptcp: check no dup close events after error (Matthieu Baerts (NGI0)) - [7035ef8c7153] mptcp: only reset subflow errors when propagated (Matthieu Baerts (NGI0)) - [8ffb2618e7c1] selftests: mptcp: check subflow errors in close events (Matthieu Baerts (NGI0)): - sent, not applied yet - Fixes for net-next: / - Features for net-next: - [7f09dc74e8f3] mptcp: pm: init and release mptcp_pm_ops (Geliang Tang) - [b6e675e9eaa4] mptcp: pm: add get_local_id() interface (Geliang Tang) - [f5c999333502] mptcp: pm: add get_priority() interface (Geliang Tang): - blocked by pm->lock refactoring required - [477f617987cc] mptcp: pm: align endpoint flags size with the NL specs (Matthieu Baerts (NGI0)): - can be sent, TODO: Matth → done - [fdff189ee93c] trace: mptcp: add mptcp_rcvbuf_grow tracepoint (Paolo Abeni): - can be sent - [53e63c7e3ff9] mptcp: do not account for OoO in mptcp_rcvbuf_grow() (Paolo Abeni) - [c7819e1fae3d] mptcp: fix receive space timestamp initialization (Paolo Abeni) - [f67f7ea87a27] mptcp: consolidate rcv space init (Paolo Abeni): - can probably be sent, to be checked - [158cc3ee759d] mptcp: better mptcp-level RTT estimator (Paolo Abeni): - TODO: Matth: check with Paolo if it can be temporarily reverted. → done (mark as "flaked") - [3864d9b42b32] mptcp: add receive queue awareness in tcp_rcv_space_adjust() (Paolo Abeni): - cannot be sent: the first one is causing issues with the selftests (simult_flows) - [bfc394d92547] mptcp: add eat_recv_skb helper (Geliang Tang) - [263520b73a77] mptcp: implement .read_sock (Geliang Tang) - [2fdaabe839e1] tcp: export tcp_splice_state (Geliang Tang) - [8958bbb2ebc1] mptcp: implement .splice_read (Geliang Tang) - [771eca97f3f2] selftests: mptcp: add splice io mode (Geliang Tang) - [45b253e0bfde] selftests: mptcp: connect: cover splice mode (Geliang Tang): - can be sent - [ac4fe3058722] mptcp: Change some dubious min_t(int, ...) to min() (David Laight): - can be sent - [5cd52ee558da] selftests: mptcp: join: wait for estab event instead of MPJ (Matthieu Baerts (NGI0)) - [b55296b69436] selftests: mptcp: join: fix wait_mpj helper (Matthieu Baerts (NGI0)) - [56280a2e8534] selftests: mptcp: join: userspace: wait for new events (Matthieu Baerts (NGI0)) - [bfb81d49140f] selftests: mptcp: join chk_stale_nr: avoid dup stats (Matthieu Baerts (NGI0)) - [2f4db1afbf48] selftests: mptcp: join: avoid declaring i if not used (Matthieu Baerts (NGI0)) - [01d6bf2a7aea] selftests: mptcp: connect: fix maybe-uninitialize warn (Matthieu Baerts (NGI0)) - [b983062dcb68] selftests: mptcp: connect cleanup TFO setup (Matthieu Baerts (NGI0)) - [acab45b18646] selftests: mptcp: join: no SKIP mark for group checks (Matthieu Baerts (NGI0)): - can be sent, but they depend on patches queued for -net - Features for net-next (next): / - Features for other trees: - [69f9d0c6114e] bpf: Add mptcp_subflow bpf_iter (Geliang Tang) - [cc3c756f1ced] selftests/bpf: More endpoints for endpoint_init (Geliang Tang) - [cad19e0c2481] selftests/bpf: Drop cgroup_fd of run_mptcpify (Geliang Tang) - [f860444ce6f3] bpf: Add mptcp packet scheduler struct_ops (Geliang Tang) - [55f1706fb677] bpf: Export mptcp packet scheduler helpers (Geliang Tang) - [15723c3aacaa] selftests/bpf: Add bpf scheduler test (Geliang Tang) - [c8deb3f68738] selftests/bpf: Add bpf_first scheduler & test (Geliang Tang) - [7453c629fc4f] selftests/bpf: Add bpf_bkup scheduler & test (Geliang Tang) - [73a33291d93c] selftests/bpf: Add bpf_rr scheduler & test (Geliang Tang) - [fec239f1ed3f] selftests/bpf: Add bpf_red scheduler & test (Geliang Tang) - [b954185f79a1] selftests/bpf: Add bpf_burst scheduler & test (Geliang Tang): - same status as before: waiting for a refactoring on the sched side Extra tests: - news about Syzkaller? (Matth): - TODO, Matth, Check → Done - Packetdrill (Davide): - / - Patchew (Davide): - / - CI (Matth): - https://ci-results.mptcp.dev/flakes.html - https://netdev.bots.linux.dev/flakes.html?tn-needle=mptcp - TODO: Matth: ignore calltraces seen before starting the tests, e.g. https://github.com/multipath-tcp/mptcp_net-next/actions/runs/21427201548/job/61698588927 → done, now in orange in flakes.html → rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: → TODO: check if it has not been already reported, and maybe report that somewhere - It might be related to VSOCK and the other issues that have been seen! → maybe but no - TODO: trigger GDB to check what's going on when there is a stall that early. → done Next meeting: - Next one on Wednesday, the 11th of February. - 17:30 UTC (8.30am PDT, 5.30pm CEST, 11.30pm CST) - Still open to everyone! - https://annuel2.framapad.org/p/mptcp_upstreaming_20260211 Feel free to comment on these topics and suggest new ones for the next meeting! Talk to you soon, Matt -- Sponsored by the NGI0 Core fund.