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smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=d5KEqn56; 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="d5KEqn56" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9738C116C6 for ; Thu, 26 Mar 2026 17:55:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774547748; bh=EAPibP1onUuLAia4SHPpLZgoS7kZ/SFjgcjFtix0+7k=; h=Date:From:Subject:To:From; b=d5KEqn56yHmIYNZNh1pSqbYKIb1PRAL1NWI13R3hxv6RzVH/iAB+mplKtyvQlKPHI KWAMPXTkOUwNmlaDfMrjn4kNvW2VvFPwA9rVQi4wV/gSZU1btEcPdG0QDm5TmIifoU oV9AoF+vK6P7sZ3EThSdiPNz2ZEjsrPkzUicPNI8rurrskJ+8WuM3M0kJLocvTSlfa dR2yN6y2kAa24PEdZxa4f37baJf7P0WUqflVooM2W+wvP8neC4RpXYB7KUXLIHJgBV lQmiHrl9Q5uSRVpXba1x4AB7Chc79VPev4hXQ7Uz5PXpHD4V0uLlYwjnjAeKK3Y5tM v6Yhkz2ag5mxA== Message-ID: Date: Thu, 26 Mar 2026 18:55:45 +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: fr Subject: [Weekly meetings] MoM - 11th of March 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: Matthieu Baerts (NGI0)): 14449624: [net,1/5] selftests: mptcp: more stable simult_flows tests 14449625: [net,2/5] mptcp: pm: avoid sending RM_ADDR over same subflow 14449626: [net,3/5] selftests: mptcp: join: check RM_ADDR not sent over same subflow 14449627: [net,4/5] mptcp: pm: in-kernel: always mark signal+subflow endp as used 14449628: [net,5/5] selftests: mptcp: join: check removing signal+subflow endp: - Series: mptcp: misc fixes for v7.0-rc2 - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1060560&state=*&archive=both 14451810: [net-next,V2,RESEND] tcp: shrink per-packet memset in __tcp_transmit_skb(): - Submitter: Keita Morisaki - URL: https://patchwork.kernel.org/project/mptcp/patch/20260304111517.2088694-1-kmta1236@gmail.com/ our repo (by: Matthieu Baerts (NGI0)): 14427551: [mptcp-net] mptcp: pm: in-kernel: always mark signal+subflow endp as used: - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/patch/20260218-mptcp-issue-613-v1-1-f8e9adb12010@kernel.org/ 14428224: [mptcp-net] selftests: mptcp: join: check removing signal+subflow endp: - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/patch/20260219101033.716403-2-matttbe@kernel.org/ 14429639: [mptcp-net,v2,1/2] mptcp: pm: avoid sending RM_ADDR over same subflow 14429640: [mptcp-net,v2,2/2] selftests: mptcp: join: check RM_ADDR not sent over same subflow: - Series: mptcp: pm: avoid sending RM_ADDR over the same subflow - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1055875&state=*&archive=both 14432575: [mptcp-next] mptcp: pm: in-kernel: remove mptcp_pm_has_addr_attr_id: - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/patch/20260223-mptcp_pm_has_addr_attr_id-v1-1-1efb38ad6488@kernel.org/ 14432728: [mptcp-next] selftests: mptcp: join: recreate signal endp with same ID: - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/patch/20260223-mptcp-sft-re-use-id-v1-1-ec648a8bda22@kernel.org/ 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: Keita Morisaki, Matthieu Baerts (NGI0), Simon Baatz, Wesley Atwell): 14461679: [net-next,1/2] mptcp: better mptcp-level RTT estimator 14461680: [net-next,2/2] mptcp: add receive queue awareness in tcp_rcv_space_adjust(): - Series: mptcp: autotune related improvement - Submitter: Matthieu Baerts (NGI0) - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1063766&state=*&archive=both - → AI review spot issues, to be addressed - NIPA got one failure 14460614: [net-next,v3,1/6] tcp: implement RFC 7323 window retraction receiver requirements 14460615: [net-next,v3,2/6] mptcp: keep rcv_mwnd_seq in sync with subflow rcv_wnd 14460616: [net-next,v3,3/6] tcp: increase LINUX_MIB_BEYOND_WINDOW for SKB_DROP_REASON_TCP_OVERWINDOW 14460617: [net-next,v3,4/6] selftests/net: packetdrill: add tcp_rcv_wnd_shrink_nomem.pkt 14460618: [net-next,v3,5/6] selftests/net: packetdrill: add tcp_rcv_wnd_shrink_allowed.pkt 14460619: [net-next,v3,6/6] selftests/net: packetdrill: add tcp_rcv_neg_window.pkt: - State: New - Series: tcp: RFC 7323-compliant window retraction handling - Submitter: Simon Baatz - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1063485&state=*&archive=both - To be reviewed 14467818: [net,1/7] tcp: track advertise-time scaling basis for rcv_wnd 14467819: [net,2/7] tcp: preserve rcv_wnd snapshot when updating advertised windows 14467820: [net,3/7] tcp: honor advertised receive window in memory admission and clamping 14467821: [net,4/7] tcp: extend TCP_REPAIR_WINDOW with receive-window scaling snapshot 14467823: [net,5/7] mptcp: refresh tcp rcv_wnd snapshot when syncing receive windows 14467822: [net,6/7] tcp: expose rmem and backlog accounting in rcvbuf_grow tracepoints 14467824: [net,7/7] selftests: tcp_ao: cover legacy and extended TCP_REPAIR_WINDOW layouts: - State: New - Series: tcp: preserve advertised rwnd accounting across receive-memory decisions - Submitter: Wesley Atwell - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1064867&state=*&archive=both - Will need to wait for Simon's series to be applied first 14444435: [net] mptcp: fix soft lockup in mptcp_recvmsg(): - State: New - Submitter: Li Xiasong - URL: https://patchwork.kernel.org/project/mptcp/patch/20260302052651.1466983-1-lixiasong1@huawei.com/ our repo (by: Christoph Paasch, Gang Yan, Geliang Tang, Gregory Detal, Li Xiasong, 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 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 14365754: [mptcp-next,v2,1/3] mptcp: implement psock_update_sk_prot 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 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 14409840: [mptcp-next,v2,1/2] mptcp: check desc->count in read_sock 14409841: [mptcp-next,v2,2/2] tcp: add recv_should_stop helper: - State: Needs ack - Series: add tcp_recv_should_stop helper - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1050056&state=*&archive=both - Status: same as last time 14410371: [mptcp-next,v2,1/3] tcp: export do_tcp_splice_eof 14410372: [mptcp-next,v2,2/3] mptcp: implement .splice_eof 14410373: [mptcp-next,v2,3/3] selftests: mptcp: connect: trigger splice_eof: - State: Needs ack - Series: implement .splice_eof - Status: same as last time 14413156: [mptcp-net,1/3] mptcp: add backlog_list bug reproducer test 14413157: [mptcp-net,2/3] mptcp: fix receive stalls when 'ack_seq' in backlog_list 14443235: [RESEND,mptcp-net,v2] mptcp: fix stall because of data_ready: - State: Changes requested - Submitter: Gang Yan - URL: https://patchwork.kernel.org/project/mptcp/patch/20260228011511.440437-1-gang.yan@linux.dev/ - Status: same as last time 14454006: [RFC,mptcp-next,v4,1/8] mptcp: add sk_is_msk helper 14454007: [RFC,mptcp-next,v4,2/8] nvmet-tcp: add mptcp support 14454008: [RFC,mptcp-next,v4,3/8] nvme-tcp: add mptcp support 14454009: [RFC,mptcp-next,v4,4/8] mptcp: add sock_set_nodelay 14454010: [RFC,mptcp-next,v4,5/8] mptcp: add sock_set_reuseaddr 14454011: [RFC,mptcp-next,v4,6/8] mptcp: add sock_set_syncnt 14454012: [RFC,mptcp-next,v4,7/8] selftests: mptcp: add NVMe-over-MPTCP test 14454013: [RFC,mptcp-next,v4,8/8] selftests: mptcp: nvme: set iopolicy: - State: Under review - Series: NVME over MPTCP - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=1061679&state=*&archive=both - AI review found some issues 14456317: [RESEND,mptcp-net] mptcp: sync the msk->sndbuf at accept() time: - State: New - Submitter: Gang Yan - URL: https://patchwork.kernel.org/project/mptcp/patch/20260306062316.1333680-1-gang.yan@linux.dev/ - To be reviewed 14460375: [mptcp-next] mptcp: preserve MSG_EOR semantics in sendmsg path: - State: New - Submitter: Gang Yan - URL: https://patchwork.kernel.org/project/mptcp/patch/20260309025431.125943-1-gang.yan@linux.dev/ - AI review found some issues Issues on GitHub: https://github.com/multipath-tcp/mptcp_net-next/issues/ Recently opened (latest from the last meeting: 616): 618 `TCP_RTO_MIN`/`MAX`: used configured values if any [enhancement]: - to imitate TCP and being able to modify these values 617 CI: Stalls when starting a VSOCK listening socket: soft lockups, RCU stalls, timeout [CI] @matttbe: - It should be fixed now, TODO close → done Recently discussed: 616 Subflow on a inactive and disconnected network path disconnects after ~16 minutes [bug]: - Possible but not due to MPTCP: can be closed → TODO Matth → done 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) 616 Subflow on a inactive and disconnected network path disconnects after ~16 minutes [bug] 602 A query about the update of 'msk->sk_sndbuf' [bug] 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 `I see list-github.shnfinite 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) 562 [performance] How much is the overhead of MPTCP？ [question] For later (opened and not assigned) 618 `TCP_RTO_MIN`/`MAX`: used configured values if any [enhancement] 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 2026-02-25) 615 subflow not re-established after endpoint of "primary" connection is removed and re-added with same ID [bug] 614 `ip mptcp monitor`: support JSON format (`-j`) [enhancement] @matttbe 613 [syzkaller] WARNING in `mptcp_pm_nl_del_addr_doit` [bug] [syzkaller] [reproducer] @matttbe 612 Re-Announcing ADD_ADDR with in-kernel PM [bug] @matttbe 607 selftests: `simult_flows`: "unbalanced bwidth with opposed, unbalanced delay" (+ "reverse direction") are unstable [bug] [selftests] [reproducer] [bisected] Packetdrill PRs 189 2 days ago Dwyane-Yan packetdrill: mptcp: add tests for MSG_EOR: - TODO: Matth: review → done 162 26 days ago geliangtang mptcp: add splice test 52 1 year ago dcaratti Add initial coverage for RM_ADDR mptcp.dev PRs: / mptcp-upstream-virtme-docker PRs: / mptcpd PRs: / FYI: Current Roadmap: - Bugs: https://github.com/multipath-tcp/mptcp_net-next/issues?q=is%3Aissue+is%3Aopen+label%3Abug - Current/Coming merge window (7.1): https://github.com/orgs/multipath-tcp/projects/19 - For later: https://github.com/orgs/multipath-tcp/projects/1 Patches to send to NetDev: - Fixes for other trees: - [58535a1a00ba] sched/mmcid: Prevent CID stalls due to concurrent forks (Thomas Gleixner) - [dc4df81603ff] sched/mmcid: Handle vfork()/CLONE_VM correctly (Thomas Gleixner) - [4e6e9b341560] sched/mmcid: Remove pointless preempt guard (Thomas Gleixner) - [0dadc10e3a66] sched/mmcid: Avoid full tasklist walks (Thomas Gleixner) - Fixes for -net: / - Fixes for net-next: / - Features for net-next: - [e86d88851e53] mptcp: pm: init and release mptcp_pm_ops (Geliang Tang) - [9adf74d1ce9c] mptcp: pm: add get_local_id() interface (Geliang Tang) - [3a3e7b678003] mptcp: pm: add get_priority() interface (Geliang Tang): - Waiting for PM lock refactoring - [83518836880e] mptcp: better mptcp-level RTT estimator (Paolo Abeni): - Fix needed - [273a85281187] mptcp: add receive queue awareness in tcp_rcv_space_adjust() (Paolo Abeni) - [11eb291df687] mptcp: pm: in-kernel: remove mptcp_pm_has_addr_attr_id (Matthieu Baerts (NGI0)) - [238b8130d166] selftests: mptcp: join: recreate signal endp with same ID (Matthieu Baerts (NGI0)): - Can wait - Features for net-next (next): - Features for other trees: - [74a4438ec820] bpf: Add mptcp_subflow bpf_iter (Geliang Tang) - [83c02b6ccff9] selftests/bpf: More endpoints for endpoint_init (Geliang Tang) - [6afcba0c99d8] selftests/bpf: Drop cgroup_fd of run_mptcpify (Geliang Tang) - [e7e8cc7d67e7] bpf: Add mptcp packet scheduler struct_ops (Geliang Tang) - [bf5a7a035c17] bpf: Export mptcp packet scheduler helpers (Geliang Tang) - [60e6ed6212dc] selftests/bpf: Add bpf scheduler test (Geliang Tang) - [68e69d296827] selftests/bpf: Add bpf_first scheduler & test (Geliang Tang) - [c581557d9e58] selftests/bpf: Add bpf_bkup scheduler & test (Geliang Tang) - [c17cf47b4e4f] selftests/bpf: Add bpf_rr scheduler & test (Geliang Tang) - [e37d6d9a3991] selftests/bpf: Add bpf_red scheduler & test (Geliang Tang) - [0fd203a514e6] selftests/bpf: Add bpf_burst scheduler & test (Geliang Tang): - Wait for sched API refactoring Extra tests: - news about Syzkaller? (Matth): - / - Packetdrill (Davide): - / - Patchew (Davide): - / - CI (Matth): - https://ci-results.mptcp.dev/flakes.html - https://netdev.bots.linux.dev/flakes.html?tn-needle=mptcp Next meeting: - Next one on Wednesday, the 25th of March. - 17:30 UTC (8.30am PDT, 5.30pm CEST, 11.30pm CST) - Still open to everyone! - https://annuel2.framapad.org/p/mptcp_upstreaming_20260325 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.