From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DF07630115F for ; Wed, 2 Jul 2025 17:15:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751476557; cv=none; b=qCvraK9KguVJPZOe6f7xbDHuAn9yYsuT/Ul+KPsE85wDy6Wz22KikTxma2tajk+1cKBymfWJ3XdzuLLQ7Yui8VMAwKoiOX04619ykPpbgU9s5cMrzUQIZk/89+yqJWJ/7JGLtH9jGyAyVsu37fzokWMU7Pg0JLKukIOhHW+VJxE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751476557; c=relaxed/simple; bh=qSW2K3Iqr1hbQPzG1xDD1qi+tsXFCu+QETwnqGiJijc=; h=Message-ID:Date:MIME-Version:From:To:Subject:Content-Type; b=S+XAl8uzxCSNBxf9HPn9wXH1Vdy1XA4LagQFiakIDCVqtM61xz937MQUY76mzHrhvD9J2NNt1GkyBT0rMjGkDo8B1kvDIgQ9euPaYi5ZGe6lnVTzPizZ/hIonxRLK6O3H5mdIE0Ln3iD7Y2mOXnLEw7thm0yxY6LWnpnphVdpKc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fg3FBmOv; 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="fg3FBmOv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00A47C4CEF1 for ; Wed, 2 Jul 2025 17:15:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751476556; bh=qSW2K3Iqr1hbQPzG1xDD1qi+tsXFCu+QETwnqGiJijc=; h=Date:From:To:Subject:From; b=fg3FBmOv5n5RJYdd/WF1er53bKIfACyksL5ub+gq1+oZB+Xwu46joNUigDaall55H Zf8ug3a+HTx3eaC7c6AQlCL58boOkyQnVIjUEnbBMLWKodgF46F6jfmUD6K8ar9+9/ x9/luNL/lMvkkNjUTgapz5I/Lco+XCeTs6hHWnFtVgvmRebdCQtUqwUVsledSJtvML 9ESUts6H00R6o2vYzw9j4sedMPQ+d1x4piMJ3plBZxUujjhOYBDH5VwISWDN1OUEq6 9MQJEctAJwioIgvjCG+eHbadCr20wwEM6fx578UzkIcwL+XDLM7yZEBiVLDxQDDwKv C3qCRDUHvnZXg== Message-ID: Date: Wed, 2 Jul 2025 19:15:54 +0200 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 - 2nd of July 2025 Autocrypt: addr=matttbe@kernel.org; keydata= xsFNBFXj+ekBEADxVr99p2guPcqHFeI/JcFxls6KibzyZD5TQTyfuYlzEp7C7A9swoK5iCvf YBNdx5Xl74NLSgx6y/1NiMQGuKeu+2BmtnkiGxBNanfXcnl4L4Lzz+iXBvvbtCbynnnqDDqU c7SPFMpMesgpcu1xFt0F6bcxE+0ojRtSCZ5HDElKlHJNYtD1uwY4UYVGWUGCF/+cY1YLmtfb WdNb/SFo+Mp0HItfBC12qtDIXYvbfNUGVnA5jXeWMEyYhSNktLnpDL2gBUCsdbkov5VjiOX7 CRTkX0UgNWRjyFZwThaZADEvAOo12M5uSBk7h07yJ97gqvBtcx45IsJwfUJE4hy8qZqsA62A nTRflBvp647IXAiCcwWsEgE5AXKwA3aL6dcpVR17JXJ6nwHHnslVi8WesiqzUI9sbO/hXeXw TDSB+YhErbNOxvHqCzZEnGAAFf6ges26fRVyuU119AzO40sjdLV0l6LE7GshddyazWZf0iac nEhX9NKxGnuhMu5SXmo2poIQttJuYAvTVUNwQVEx/0yY5xmiuyqvXa+XT7NKJkOZSiAPlNt6 VffjgOP62S7M9wDShUghN3F7CPOrrRsOHWO/l6I/qJdUMW+MHSFYPfYiFXoLUZyPvNVCYSgs 3oQaFhHapq1f345XBtfG3fOYp1K2wTXd4ThFraTLl8PHxCn4ywARAQABzSRNYXR0aGlldSBC YWVydHMgPG1hdHR0YmVAa2VybmVsLm9yZz7CwZEEEwEIADsCGwMFCwkIBwIGFQoJCAsCBBYC AwECHgECF4AWIQToy4X3aHcFem4n93r2t4JPQmmgcwUCZUDpDAIZAQAKCRD2t4JPQmmgcz33 EACjROM3nj9FGclR5AlyPUbAq/txEX7E0EFQCDtdLPrjBcLAoaYJIQUV8IDCcPjZMJy2ADp7 /zSwYba2rE2C9vRgjXZJNt21mySvKnnkPbNQGkNRl3TZAinO1Ddq3fp2c/GmYaW1NWFSfOmw MvB5CJaN0UK5l0/drnaA6Hxsu62V5UnpvxWgexqDuo0wfpEeP1PEqMNzyiVPvJ8bJxgM8qoC cpXLp1Rq/jq7pbUycY8GeYw2j+FVZJHlhL0w0Zm9CFHThHxRAm1tsIPc+oTorx7haXP+nN0J iqBXVAxLK2KxrHtMygim50xk2QpUotWYfZpRRv8dMygEPIB3f1Vi5JMwP4M47NZNdpqVkHrm jvcNuLfDgf/vqUvuXs2eA2/BkIHcOuAAbsvreX1WX1rTHmx5ud3OhsWQQRVL2rt+0p1DpROI 3Ob8F78W5rKr4HYvjX2Inpy3WahAm7FzUY184OyfPO/2zadKCqg8n01mWA9PXxs84bFEV2mP VzC5j6K8U3RNA6cb9bpE5bzXut6T2gxj6j+7TsgMQFhbyH/tZgpDjWvAiPZHb3sV29t8XaOF BwzqiI2AEkiWMySiHwCCMsIH9WUH7r7vpwROko89Tk+InpEbiphPjd7qAkyJ+tNIEWd1+MlX ZPtOaFLVHhLQ3PLFLkrU3+Yi3tXqpvLE3gO3LM7BTQRV4/npARAA5+u/Sx1n9anIqcgHpA7l 5SUCP1e/qF7n5DK8LiM10gYglgY0XHOBi0S7vHppH8hrtpizx+7t5DBdPJgVtR6SilyK0/mp 9nWHDhc9rwU3KmHYgFFsnX58eEmZxz2qsIY8juFor5r7kpcM5dRR9aB+HjlOOJJgyDxcJTwM 1ey4L/79P72wuXRhMibN14SX6TZzf+/XIOrM6TsULVJEIv1+NdczQbs6pBTpEK/G2apME7vf mjTsZU26Ezn+LDMX16lHTmIJi7Hlh7eifCGGM+g/AlDV6aWKFS+sBbwy+YoS0Zc3Yz8zrdbi Kzn3kbKd+99//mysSVsHaekQYyVvO0KD2KPKBs1S/ImrBb6XecqxGy/y/3HWHdngGEY2v2IP Qox7mAPznyKyXEfG+0rrVseZSEssKmY01IsgwwbmN9ZcqUKYNhjv67WMX7tNwiVbSrGLZoqf Xlgw4aAdnIMQyTW8nE6hH/Iwqay4S2str4HZtWwyWLitk7N+e+vxuK5qto4AxtB7VdimvKUs x6kQO5F3YWcC3vCXCgPwyV8133+fIR2L81R1L1q3swaEuh95vWj6iskxeNWSTyFAVKYYVskG V+OTtB71P1XCnb6AJCW9cKpC25+zxQqD2Zy0dK3u2RuKErajKBa/YWzuSaKAOkneFxG3LJIv Hl7iqPF+JDCjB5sAEQEAAcLBXwQYAQIACQUCVeP56QIbDAAKCRD2t4JPQmmgc5VnD/9YgbCr HR1FbMbm7td54UrYvZV/i7m3dIQNXK2e+Cbv5PXf19ce3XluaE+wA8D+vnIW5mbAAiojt3Mb 6p0WJS3QzbObzHNgAp3zy/L4lXwc6WW5vnpWAzqXFHP8D9PTpqvBALbXqL06smP47JqbyQxj Xf7D2rrPeIqbYmVY9da1KzMOVf3gReazYa89zZSdVkMojfWsbq05zwYU+SCWS3NiyF6QghbW voxbFwX1i/0xRwJiX9NNbRj1huVKQuS4W7rbWA87TrVQPXUAdkyd7FRYICNW+0gddysIwPoa KrLfx3Ba6Rpx0JznbrVOtXlihjl4KV8mtOPjYDY9u+8x412xXnlGl6AC4HLu2F3ECkamY4G6 UxejX+E6vW6Xe4n7H+rEX5UFgPRdYkS1TA/X3nMen9bouxNsvIJv7C6adZmMHqu/2azX7S7I vrxxySzOw9GxjoVTuzWMKWpDGP8n71IFeOot8JuPZtJ8omz+DZel+WCNZMVdVNLPOd5frqOv mpz0VhFAlNTjU1Vy0CnuxX3AM51J8dpdNyG0S8rADh6C8AKCDOfUstpq28/6oTaQv7QZdge0 JY6dglzGKnCi/zsmp2+1w559frz4+IC7j/igvJGX4KDDKUs0mlld8J2u2sBXv7CGxdzQoHaz lzVbFe7fduHbABmYz9cefQpO7wDE/Q== Organization: NGI0 Core Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hello everyone, Today, we just 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: Jakub Kicinski): 14131177: [net,07/10] netlink: specs: mptcp: replace underscores with dashes in names our repo (by: /): / 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: /): / our repo (by: Gang Yan, Geliang Tang, Gregory Detal, Matthieu Baerts): 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 - TODO: Mat: check in a VM and do some tests with mptcpd - TODO: Matth: check this series - Status: same as last time 14077448: [mptcp-next,v7,1/5] mptcp: pm: call pm worker handler without pm lock 14077447: [mptcp-next,v7,2/5] mptcp: pm: add accept_new_subflow() interface 14077449: [mptcp-next,v7,3/5] mptcp: pm: add established() interface 14077450: [mptcp-next,v7,4/5] mptcp: pm: add subflow_established() interface 14077451: [mptcp-next,v7,5/5] mptcp: pm: drop is_userspace in subflow_check_next: - State: Needs ack - Series: BPF path manager, part 6 - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=959912&state=*&archive=both - Status: same as last time 14102233: [mptcp-next,v3,1/3] selftests/bpf: Add sndbuf for send_recv_data 14102235: [mptcp-next,v3,2/3] Squash to "selftests/bpf: Add bpf scheduler test" 14102234: [mptcp-next,v3,3/3] DO-NOT-MERGE: selftests/bpf: Increase total_bytes of bpf sched tests: - State: Under review - Series: send() fails with EAGAIN in blocking IO mode "487 - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=967210&state=*&archive=both - Mat will try to look at it 14135682: [1/2] mptcp: add splice test: - Packetdrill PR has been sent too (and reviewed there) 14136062: [mptcp-next,v5,1/5] mptcp: use sk_eat_skb in recvmsg_mskq 14136063: [mptcp-next,v5,2/5] mptcp: add recvmsg_desc helper 14136064: [mptcp-next,v5,3/5] mptcp: implement .read_sock 14136065: [mptcp-next,v5,4/5] mptcp: set .splice_read 14136066: [mptcp-next,v5,5/5] selftests: mptcp: add splice io mode: - State: New - Series: implement mptcp read_sock - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=976876&state=*&archive=both - Mat will try to look at it Issues on GitHub: https://github.com/multipath-tcp/mptcp_net-next/issues/ Recently opened (latest from the last meeting: 565): 570 [syzkaller] WARNING in `mptcp_incoming_options` [syzkaller]: - Probably not urgent: looks like it was hit while changing endpoints in parallel 568 socket option: support `IPV6_TCLASS` [enhancement]: - We support the IPv4 equivalent (IP_TOS), but not this one - should be easy to add, but it needs to be done 567 [syzbot] WARNING in `__mark_subflow_endp_available` [bug] [syzkaller] [reproducer]: - Probably not urgent: we can deal with the situation, but we should avoid it (or suppress the warning) 566 How to maintain extra subflows for redundancy when client and server are reversible? [question]: - to use signal + subflow + fullmesh flags on the same endpoint - it will likely create all possible paths twice Recently discussed: 562 [performance] How much is the overhead of MPTCP？ [question] [triage]: - Matth needs to look at it 336 Issues with BPF packet scheduler [bug] [sched] [bpf]: - discussions are on #565: bpftool commands seems to be OK to load a BPF packet sched, but it doesn't seem to work. Bugs (opened, flagged as "bug" and assigned) 498 in-kernel PM: closed subflows before `RM_ADDR` will not decrement `add_addr_accepted` [bug] [pm] @geliangtang 487 `send()` fails with `EAGAIN` in blocking IO mode [bug] [selftests] [sched] @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) 567 [syzbot] WARNING in `__mark_subflow_endp_available` [bug] [syzkaller] [reproducer] 561 [syzkaller] WARNING in `mptcp_pm_alloc_anno_list` [bug] [syzkaller] 559 Adapt `mptcp_rcv_space_adjust()` after the recent TCP modifications (`tcp: receive side improvements`) [bug] [enhancement] 555 [syzbot] WARNING in `mptcp_do_fallback` [bug] [syzkaller] 549 pm: in-kernel: set `msk->pm.work_pending` back to `true` [bug] [selftests] [pm] 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] 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] 476 packetdrill: coalescing feature doesn't take into account MPTCP options [bug] [packetdrill] 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] 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] 315 Issues with backup flow [bug] In Progress (opened, new feature and assigned) 514 Add MIB counters for fallback to TCP [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) 566 How to maintain extra subflows for redundancy when client and server are reversible? [question] 562 [performance] How much is the overhead of MPTCP？ [question] [triage] 530 about mptcp subflow creation question [question] [feedback-needed] 520 Question about proper MPTCP configuration over VPN. [question] [feedback-needed] 412 shadowsocks-libev not working, need guidance for PM configuration [question] [feedback-needed] For later (opened and not assigned) 570 [syzkaller] WARNING in `mptcp_incoming_options` [syzkaller] 568 socket option: support `IPV6_TCLASS` [enhancement] 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] 536 PM: new subflow: avoid selecting initial endpoint upon `ADD_ADDR` reception if servers deny MPJ to initial address [enhancement] [pm] 535 TCPDump: display `MP_CAPABLE` C flag [enhancement] 532 Userspace PM doesn't have access to `allow_join_id0` / `allow_join_initial_addr_port` bit from the SYN-ACK [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] 503 in-kernel PM: use endpoints only to create subflows with received `ADD_ADDR` [enhancement] [pm] 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] 298 CG Memory accounting for passive MPTCP socket [enhancement] 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] 197 more mibs needed [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 2025-06-18) 569 Problems encountered in setting up subflows [question]: - with the out-of-tree kernel 565 Testing Custom Scheduler on Newer Kernel Versions with MPTCP [question] 564 Types of Schedulers available [question] @matttbe Packetdrill PRs 162 1 day ago geliangtang mptcp: add splice test 161 1 day ago geliangtang packetdrill: validate maxseg sockopt 52 5 months ago dcaratti Add initial coverage for RM_ADDR mptcp.dev 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 (6.17): https://github.com/orgs/multipath-tcp/projects/15 - For later: https://github.com/orgs/multipath-tcp/projects/1 Patches to send to NetDev: - Fixes for other trees: / - Fixes for -net: / - Fixes for net-next: / - Features for net-next: - [fb6b0f23279c] mptcp: pm: init and release mptcp_pm_ops (Geliang Tang) - [87e06473732c] mptcp: pm: add get_local_id() interface (Geliang Tang) - [ed98432ed726] mptcp: pm: add get_priority() interface (Geliang Tang): - blocked: refactor pm->lock - [3fe8ea995f31] mptcp: sockopt: drop redundant tcp_getsockopt (Geliang Tang) - [273b59f86a91] tcp: add tcp_sock_set_maxseg (Geliang Tang) - [149704a8572e] mptcp: add TCP_MAXSEG sockopt support (Geliang Tang): - blocked: need a packetdrill test first - [9ac5e4684813] mptcp: fix typos in comments (moyuanhao) - Features for net-next (next): / - Features for other trees: - [8f48932bc2b0] bpf: Add mptcp_subflow bpf_iter (Geliang Tang) - [23dd70d7a247] selftests/bpf: More endpoints for endpoint_init (Geliang Tang) - [8eb64e14e51f] selftests/bpf: Drop cgroup_fd of run_mptcpify (Geliang Tang) - [319b26bed9fc] bpf: Add mptcp packet scheduler struct_ops (Geliang Tang) - [64f4fa0cd366] bpf: Export mptcp packet scheduler helpers (Geliang Tang) - [dfe95157afef] selftests/bpf: Add bpf scheduler test (Geliang Tang) - [f7e237d231c9] selftests/bpf: Add bpf_first scheduler & test (Geliang Tang) - [312b44eaa196] selftests/bpf: Add bpf_bkup scheduler & test (Geliang Tang) - [9453c89d87ec] selftests/bpf: Add bpf_rr scheduler & test (Geliang Tang) - [badb3d1234e2] selftests/bpf: Add bpf_red scheduler & test (Geliang Tang) - [44fe69b21296] selftests/bpf: Add bpf_burst scheduler & test (Geliang Tang): - blocked: need sched API refactor Extra tests: - news about Syzkaller? (Matth): - found 2 new issues, not urgent - Packetdrill (Davide): - some PR that are in review - Patchew (Davide): - TODO: it looks like it is no longer applying new patches → WIP - 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 16th of July. - 17:30 UTC (8.30am PDT, 5.30pm CEST, 11.30pm CST) - Still open to everyone! - https://annuel2.framapad.org/p/mptcp_upstreaming_20250716 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.