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smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uY350DNX; 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="uY350DNX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2AF5DC4CEF1 for ; Fri, 5 Dec 2025 18:25:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764959117; bh=5HAtWcZg/vkk/JBYiF4/VvFWsfSO9kAfrJxwgQ56x7s=; h=Date:From:To:Subject:From; b=uY350DNXCFysNczmX0IyrXYHTmDAXrFH/t94y8+V700h1sNkLgWxn+U82/lxiW/Av TvDrcoPaLy/oCLilxj/GywrQwi+qax7wZBvs9ij7nx6N9x7dxd/x39/LipnTUsnsBz bhSTskwx2MrfpfSEmBjWjOAPIFKS2g5GSPmi6DALVI4TLuZ64ECNt1mm/w1hBx0WS1 4rv/1aXlTNxA0q9apjRasHJtbdpErqUGDnERnWyleTM2L5dIiVMkYAlsyAJKgUQgwz OTcw7+erHxxHq3ABb0bKruhqh/1t0HXTRwqRheCpOhZAwpeQX+pWPNGC77z/sTSlv3 lX/LHm4Z25a5A== Message-ID: Date: Fri, 5 Dec 2025 19:25:15 +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 - 3rd of December 2025 Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit Hello everyone, This week, 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: Matthieu Baerts): 14298196: [6.12.y] mptcp: fix MSG_PEEK stream corruption: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251104121515.1093006-2-matttbe@kernel.org/ 14318742: [net,01/11] mptcp: fix ack generation for fallback msk 14318743: [net,02/11] mptcp: avoid unneeded subflow-level drops 14318744: [net,03/11] mptcp: fix premature close in case of fallback 14318745: [net,04/11] mptcp: do not fallback when OoO is present 14318746: [net,05/11] mptcp: decouple mptcp fastclose from tcp close 14318747: [net,06/11] mptcp: fix duplicate reset on fastclose 14318748: [net,07/11] selftests: mptcp: join: fastclose: remove flaky marks 14318749: [net,08/11] selftests: mptcp: join: endpoints: longer timeout 14318750: [net,09/11] selftests: mptcp: join: userspace: longer timeout 14318751: [net,10/11] mptcp: fix address removal logic in mptcp_pm_nl_rm_addr 14318752: [net,11/11] selftests: mptcp: add a check for 'add_addr_accepted': - Series: mptcp: misc fixes for v6.18-rc7 - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1024685&state=*&archive=both 14325528: [net-next,01/14] net: factor-out _sk_charge() helper 14325529: [net-next,02/14] mptcp: factor-out cgroup data inherit helper 14325530: [net-next,03/14] mptcp: grafting MPJ subflow earlier 14325531: [net-next,04/14] mptcp: fix memcg accounting for passive sockets 14325532: [net-next,05/14] mptcp: cleanup fallback data fin reception 14325533: [net-next,06/14] mptcp: cleanup fallback dummy mapping generation 14325534: [net-next,07/14] mptcp: ensure the kernel PM does not take action too late 14325535: [net-next,08/14] mptcp: do not miss early first subflow close event notification 14325536: [net-next,09/14] mptcp: make mptcp_destroy_common() static 14325537: [net-next,10/14] mptcp: drop the __mptcp_data_ready() helper 14325538: [net-next,11/14] mptcp: handle first subflow closing consistently 14325539: [net-next,12/14] mptcp: borrow forward memory from subflow 14325540: [net-next,13/14] mptcp: introduce mptcp-level backlog 14325541: [net-next,14/14] mptcp: leverage the backlog for RX packet processing: - Series: mptcp: memcg accounting for passive sockets & backlog processing - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1026445&state=*&archive=both 14329194: [net] mptcp: clear scheduled subflows on retransmit: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251125-net-mptcp-clear-sched-rtx-v1-1-1cea4ad2165f@kernel.org/ 14327388: [iproute2-net,1/6] MAINTAINERS: add entry for mptcp 14327389: [iproute2-net,2/6] man: mptcp: fix minor typos 14327390: [iproute2-net,3/6] mptcp: add 'laminar' endpoint support 14327391: [iproute2-net,4/6] mptcp: monitor: add 'server side' info 14327392: [iproute2-net,5/6] mptcp: monitor: add 'deny join id0' info 14327393: [iproute2-net,6/6] mptcp: monitor: support 'server side' as a flag: - Series: mptcp: new endpoint type and info flags - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1026908&state=*&archive=both 14323749: [net-next,1/2] tools: ynl-gen: add function prefix argument 14323748: [net-next,2/2] tools: ynl-gen: add regeneration comment: - State: New - Series: tools: ynl-gen: regeneration comment + function prefix - Submitter: Asbjørn Sloth Tønnesen - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1025958&state=*&archive=both 14332241: [6.6.y] mptcp: fix duplicate reset on fastclose: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251127182741.3577840-2-matttbe@kernel.org/ 14332242: [6.6.y] selftests: mptcp: join: properly kill background tasks: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251127182810.3578622-2-matttbe@kernel.org/ 14333963: [6.1.y] selftests: mptcp: join: endpoints: longer transfer: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251129165510.2124040-2-matttbe@kernel.org/ 14333964: [6.1.y] mptcp: fix duplicate reset on fastclose: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251129165612.2125498-2-matttbe@kernel.org/ 14333965: [5.15.y] selftests: mptcp: join: rm: set backup flag: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251129165729.2127525-2-matttbe@kernel.org/ 14333966: [5.15.y] mptcp: avoid unneeded subflow-level drops: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251129165825.2129168-2-matttbe@kernel.org/ 14334750: [6.1.y] mptcp: Fix proto fallback detection with BPF: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251201104459.3440448-2-matttbe@kernel.org/ 14334838: [5.15.y] mptcp: Fix proto fallback detection with BPF: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251201112712.3573321-2-matttbe@kernel.org/ 14334874: [5.10.y] mptcp: Fix proto fallback detection with BPF: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251201113457.3641925-2-matttbe@kernel.org/ our repo (by: Ankit Khushwaha, Matthieu Baerts, Paolo Abeni): 14322543: [v7,mptcp-next,1/6] trace: mptcp: add mptcp_rcvbuf_grow tracepoint 14322544: [v7,mptcp-next,2/6] mptcp: do not account for OoO in mptcp_rcvbuf_grow() 14322546: [v7,mptcp-next,3/6] mptcp: fix receive space timestamp initialization. 14322545: [v7,mptcp-next,4/6] mptcp: consolidate rcv space init 14322547: [v7,mptcp-next,5/6] mptcp: better mptcp-level RTT estimator 14322548: [v7,mptcp-next,6/6] mptcp: add receive queue awareness in tcp_rcv_space_adjust(): - Series: mptcp: autotune related improvement - Submitter: Paolo Abeni - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1025709&state=*&archive=both 14324060: [mptcp-net] mptcp: clear scheduled subflows on retransmit: - Submitter: Paolo Abeni - URL: https://patchwork.kernel.org/project/mptcp/patch/30e5325f37026b870cd0d0765d5d47c8a68fced9.1763676964.git.pabeni@redhat.com/ 14324638: [mptcp-net] mptcp: schedule rtx timer only after pushing data: - Submitter: Paolo Abeni - URL: https://patchwork.kernel.org/project/mptcp/patch/9f5e5b6c05fa0e6d303126c6a68a19305d166d36.1763715034.git.pabeni@redhat.com/ 14330673: selftests: mptcp: initialize raw_addr to Null: - Submitter: Ankit Khushwaha - URL: https://patchwork.kernel.org/project/mptcp/patch/20251126163046.58615-1-ankitkhushwaha.linux@gmail.com/ 14330887: [mptcp-net,1/3] mptcp: pm: ignore unknown endpoint flags 14330888: [mptcp-net,2/3] selftests: mptcp: pm: ensure unknown flags are ignored 14330889: [mptcp-net,3/3] mptcp: pm: align endpoint flags size with the NL specs: - Series: mptcp: pm: ignore unknown endpoint flags - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1027994&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): 14321880: [44/44] net/mptcp: Change some dubious min_t(int, ...) to min(): - State: New - Series: Change a lot of min_t() that might mask high bits - Submitter: David Laight - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1025544&state=*&archive=both - TODO: Matt: check status 14333645: [net-next,v2] selftests: mptcp: Mark xerror __noreturn: - State: Changes requested - Submitter: Ankit Khushwaha - URL: https://patchwork.kernel.org/project/mptcp/patch/20251129043808.16714-1-ankitkhushwaha.linux@gmail.com/ - new version expected in January our repo (by: Ankit Khushwaha, Asbjørn Sloth Tønnesen, Christoph Paasch, David Laight, Gang Yan, GangYan, Geliang Tang, Gregory Detal, Matthieu Baerts, Paolo Abeni): 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 before 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 before 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 before 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 before 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 before 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 before 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 before 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 before 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 before 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 before 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 before 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 before 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 before 14326164: [RFC,mptcp-next,v3,1/8] selftests: mptcp: sockopt: add protocol arguments 14326165: [RFC,mptcp-next,v3,2/8] selftests: mptcp: sockopt: enhance compatibility with TCP tests 14326166: [RFC,mptcp-next,v3,3/8] selftests: mptcp: sockopt: implement TCP TLS tests 14326167: [RFC,mptcp-next,v3,4/8] tls: add MPTCP protocol support 14326168: [RFC,mptcp-next,v3,5/8] mptcp: update ULP getsockopt 14326169: [RFC,mptcp-next,v3,6/8] mptcp: enable TLS setsockopt 14326170: [RFC,mptcp-next,v3,7/8] selftests: mptcp: connect: update sock_test_tcpulp 14326171: [RFC,mptcp-next,v3,8/8] selftests: mptcp: sockopt: cover MPTCP KTLS test cases: - State: New - Series: MPTCP KTLS support - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1026573&state=*&archive=both - Depends on the "mptcp read_sock" one, will be reviewed after 14327146: [mptcp-next,v14,1/8] mptcp: add eat_recv_skb helper 14327147: [mptcp-next,v14,2/8] mptcp: implement .read_sock 14327148: [mptcp-next,v14,3/8] tcp: add recv_should_stop helper 14327149: [mptcp-next,v14,4/8] mptcp: use recv_should_stop helper 14327150: [mptcp-next,v14,5/8] tcp: export tcp_splice_state 14327151: [mptcp-next,v14,6/8] mptcp: implement .splice_read 14327152: [mptcp-next,v14,7/8] selftests: mptcp: add splice io mode 14327153: [mptcp-next,v14,8/8] selftests: mptcp: connect: cover splice mode: - State: New - Series: implement mptcp read_sock - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1026854&state=*&archive=both - To be reviewed 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: New - Series: NVME over MPTCP - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1027779&state=*&archive=both - Depends on the "mptcp read_sock" one, will be reviewed after 14331259: libnvme: add mptcp trtype: - State: New - Series: libnvme: add mptcp trtype - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1028094&state=*&archive=both - one question for libnvme maintainer 14332026: [RFC,mptcp-next] mptcp: support net.ipv4.tcp_rcvbuf_low_rtt: - State: RFC - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20251127-mptcp-tcp_rcvbuf_low_rtt-v1-1-fa080d67f2e5@kernel.org/ - we should share more code with TCP not to have to adapt MPTCP each time TCP is being modified. 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/ - might be due to WIP patches? 14332987: [mptcp-net] mptcp: fallback earlier on simult connection: - State: New - Submitter: Paolo Abeni - URL: https://patchwork.kernel.org/project/mptcp/patch/36b926c5d55933a6f2d2a7f6ff8d8a091c0de719.1764332508.git.pabeni@redhat.com/ - Matth can still reproduce his issue, which seems to have a slightly different root cause, probably a v2 or an extra fix will be needed 14332999: [net-next] tls: check return value of strp_load_anchor_with_queue: - State: Changes requested - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/patch/ce74452f4c095a1761ef493b767b4bd9f9c14359.1764333805.git.tanggeliang@kylinos.cn/ - Looks like the issue is due to WIP code, probably the fix should be in these other patches. Issues on GitHub: https://github.com/multipath-tcp/mptcp_net-next/issues/ Recently opened (latest from the last meeting: 601): 602 A query about the update of 'msk->sk_sndbuf' [question]: - See the patch that has been sent about that: maybe an issue in the WIP patches? Recently discussed: 600 mptcp: avoid dropping partial packets [bug]: - renamed: goal now is to reapply a fix and... fix it 599 [syzbot] possible deadlock in `mptcp_subflow_create_socket`: `nbd` has a lockdep dependency between `reclaim` and `af_socket` [bug] [syzkaller]: - more details about the issue has been added 586 [syzkaller] WARNING in `subflow_data_ready` [bug] [syzkaller]: - Paolo sent a patch 581 Default scheduler under-utilizes newly restored subflows on long-lived flows after WAN failback [bug] 491 selftests: `mptcp_join`: tests `Infinite map` & `MP_FAIL MP_RST` are unstable [bug] [selftests]: - still happening 213 add MPTCP man page [enhancement]: - some new hints for those who want to look at it Bugs (opened, flagged as "bug" and assigned) 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) 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] 586 [syzkaller] WARNING in `subflow_data_ready` [bug] [syzkaller] 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] 567 [syzbot] WARNING in `__mark_subflow_endp_available` [bug] [syzkaller] [reproducer] 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 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) 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] 521 Implement psock_update_sk_prot, for eBPF SOCKMAP support [enhancement] 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] 396 ci: periodically run selftests from the export branch on stable kernels [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 2025-11-19) 595 selftests: `mptcp_connect`: MPTCP -> MPTCP timeout during closing time [bug] [selftests] 574 [selftests] `mptcp_connect.sh`: `copyfd_io_poll`: poll timed out [bug] [selftests] 561 [syzkaller] WARNING in `mptcp_pm_alloc_anno_list` [bug] [syzkaller] 530 about mptcp subflow creation question [question] [feedback-needed] 520 Question about proper MPTCP configuration over VPN. [question] [feedback-needed] 508 Divide error on device removal [bug] [feedback-needed] 505 Subflows won't be used when the interface for the main flow is a subinterface [bug] [feedback-needed] 495 [syzkaller] KASAN: slab-use-after-free Read in `__inet6_lookup_established` [bug] [syzkaller] 494 [syzkaller] WARNING in `__skb_flow_dissect` [bug] [syzkaller] 476 packetdrill: coalescing feature doesn't take into account MPTCP options [bug] [packetdrill] 412 shadowsocks-libev not working, need guidance for PM configuration [question] [feedback-needed] 325 selftests: `mptcp_join`: test 18 `signal addresses race test` is sometimes failing [bug] [selftests] 324 selftests: `mptcp_join`: tests `fastclose test` & `fastclose server test` are sometimes failing [bug] [selftests] @matttbe 315 Issues with backup flow [bug] 197 more mibs needed [enhancement] Packetdrill PRs 184 2 days ago matttbe mptcp: fallback earlier on simult connection: - Linked to Paolo's patch 162 20 days ago geliangtang mptcp: add splice test 52 10 months ago dcaratti Add initial coverage for RM_ADDR mptcp.dev PRs: / mptcpd PRs: 329 5 days ago matttbe flags: define "implicit": - merged! FYI: Current Roadmap: - Bugs: https://github.com/multipath-tcp/mptcp_net-next/issues?q=is%3Aissue+is%3Aopen+label%3Abug - Current/Coming merge window (6.19): https://github.com/orgs/multipath-tcp/projects/17 - For later: https://github.com/orgs/multipath-tcp/projects/1 - TODO: Matth: update changelog + new projects + change links → Done https://github.com/multipath-tcp/mptcp_net-next/wiki#changelog Patches to send to NetDev: - Fixes for other trees: - [2505e1b4bea4] selftests: bpf: fix recent compilation errors (Matthieu Baerts (NGI0)) - [08d7b3f6fe89] selftests: mptcp: initialize raw_addr to Null (Ankit Khushwaha) - Fixes for -net: - [5a048c302a7a] mptcp: schedule rtx timer only after pushing data (Paolo Abeni): - was delayed after a request from Paolo, can be sent now. - [197a6e0e0dda] mptcp: pm: ignore unknown endpoint flags (Matthieu Baerts (NGI0)) - [f5661a6157d5] selftests: mptcp: pm: ensure unknown flags are ignored (Matthieu Baerts (NGI0)): - can be sent - Fixes for net-next: / - Features for net-next: - [e2716470e392] mptcp: pm: init and release mptcp_pm_ops (Geliang Tang) - [1d6e4e112d0a] mptcp: pm: add get_local_id() interface (Geliang Tang) - [42bbbc6012e1] mptcp: pm: add get_priority() interface (Geliang Tang) - [83dde12cadbe] mptcp: pm: align endpoint flags size with the NL specs (Matthieu Baerts (NGI0)) - [d2108181d983] trace: mptcp: add mptcp_rcvbuf_grow tracepoint (Paolo Abeni) - [ff42ffc6c36e] mptcp: do not account for OoO in mptcp_rcvbuf_grow() (Paolo Abeni) - [f78d06d9dca9] mptcp: fix receive space timestamp initialization (Paolo Abeni) - [e626c5eb154b] mptcp: consolidate rcv space init (Paolo Abeni) - [710614b1f552] mptcp: better mptcp-level RTT estimator (Paolo Abeni) - [bee53f521f91] mptcp: add receive queue awareness in tcp_rcv_space_adjust() (Paolo Abeni): - net-next is closed - Features for net-next (next): / - Features for other trees: - [33e6f24a7ddd] bpf: Add mptcp_subflow bpf_iter (Geliang Tang) - [5c216569692b] selftests/bpf: More endpoints for endpoint_init (Geliang Tang) - [74d3e560d5bc] selftests/bpf: Drop cgroup_fd of run_mptcpify (Geliang Tang) - [cbee01cd828c] bpf: Add mptcp packet scheduler struct_ops (Geliang Tang) - [3150383b5113] bpf: Export mptcp packet scheduler helpers (Geliang Tang) - [ae9aa73c9e11] selftests/bpf: Add bpf scheduler test (Geliang Tang) - [c4e0a40004ba] selftests/bpf: Add bpf_first scheduler & test (Geliang Tang) - [729063f85404] selftests/bpf: Add bpf_bkup scheduler & test (Geliang Tang) - [4a35b1194f96] selftests/bpf: Add bpf_rr scheduler & test (Geliang Tang) - [dab71ebd7228] selftests/bpf: Add bpf_red scheduler & test (Geliang Tang) - [12152a05a4c6] selftests/bpf: Add bpf_burst scheduler & test (Geliang Tang) Extra tests: - news about Syzkaller? (Matth): - New issues found, Matth will try to sort that out - Packetdrill (Davide): - / - Patchew (Davide): - / - CI (Matth): - https://ci-results.mptcp.dev/flakes.html - https://netdev.bots.linux.dev/flakes.html?tn-needle=mptcp - Jakub's message → Done - Some issues with simult flows - Also issues with packetdrill: - TODO Matth → Done Next meeting: - Next one on Wednesday, the 17th of December. - /!\ Note: this meeting will maybe be cancelled: net-next will still be closed, post LPC, pre holiday period, etc. - /!\ The one on the 31st of December will be cancelled. Next one on the 14st of January - 17:30 UTC (8.30am PDT, 5.30pm CEST, 11.30pm CST) - Still open to everyone! - https://annuel2.framapad.org/p/mptcp_upstreaming_20251217 - https://annuel2.framapad.org/p/mptcp_upstreaming_20260114 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.