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smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JwKi4DWe; 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="JwKi4DWe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4C304C4CEE5 for ; Thu, 24 Oct 2024 17:22:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729790544; bh=V8n8b9v7j8eMIL3dxev21l3R4jUTH1XgYC16xv4+Tio=; h=Date:From:Subject:To:From; b=JwKi4DWeVPBPDxOsUjEjRZp+sz2HI3372Io7KujqP8c9jcIwRkJnw9nlizLeNgNmz 8VKXZ5ZctNXBzuvcDMFR4kDF4XPSW08g12BLj3Hx7ZBa0AKs4px1dBjRB9XJszA+7Z Oc2M24Bjzm/q9QqvFAd9K1mvz5bjWISnLbh2w70J2qzeSfnwIQNAuGBI1eO/uPwDBX vgS0/TFeZZpnDXj2Y/IgJ5pSBGKi+h/w2tBzQ8T7mVUSyOp4o0hsUYPF5NsHb1RjuE 6abCsLyEHp6EQP1Gs8xiALaXl5rU4tLybnHGSW1LYw2rLrmWbMY3ZffoabaGEBMByH 56MVcx+JWYhJg== Message-ID: <00a07d91-4187-4eb1-a65c-4d8d428f0219@kernel.org> Date: Thu, 24 Oct 2024 19:22:21 +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 Content-Language: en-GB From: Matthieu Baerts Subject: [Weekly meetings] MoM - 23rd of October 2024 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 Christoph (Apple), 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): 13826239: [net,1/4] mptcp: handle consistently DSS corruption 13826240: [net,2/4] tcp: fix mptcp DSS corruption due to large pmtu xmit 13826241: [net,3/4] mptcp: fallback when MPTCP opts are dropped after 1st data 13826242: [net,4/4] mptcp: pm: do not remove closing subflows: - Series: mptcp: misc. fixes involving fallback to TCP - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=896666&state=*&archive=both 13835092: [net,v2,1/2] mptcp: prevent MPC handshake on port-based signal endpoints 13835093: [net,v2,2/2] selftests: mptcp: join: test for prohibited MPC to port-based endp: - Series: mptcp: prevent MPC handshake on port-based signal endpoints - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=898914&state=*&archive=both 13835861: [net] mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20241015-net-mptcp-uaf-pm-rm-v1-1-c4ee5d987a64@kernel.org/ 13840124: [6.11.y] tcp: fix mptcp DSS corruption due to large pmtu xmit: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20241017143218.1428691-2-matttbe@kernel.org/ 13841563: [6.11.y] mptcp: prevent MPC handshake on port-based signal endpoints: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20241018103356.2167155-2-matttbe@kernel.org/ 13841997: [6.6.y,1/4] tcp: fix mptcp DSS corruption due to large pmtu xmit 13841998: [6.6.y,2/4] selftests: mptcp: join: change capture/checksum as bool 13841999: [6.6.y,3/4] selftests: mptcp: join: test for prohibited MPC to port-based endp 13842000: [6.6.y,4/4] selftests: mptcp: remove duplicated variables: - Series: mptcp: fix recent failed backports - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=900797&state=*&archive=both 13842096: [6.1.y,1/2] tcp: fix mptcp DSS corruption due to large pmtu xmit 13842097: [6.1.y,2/2] mptcp: prevent MPC handshake on port-based signal endpoints: - Series: mptcp: fix recent failed backports - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=900840&state=*&archive=both 13842643: [5.15.y,1/6] mptcp: track and update contiguous data status 13842644: [5.15.y,2/6] mptcp: handle consistently DSS corruption 13842645: [5.15.y,3/6] tcp: fix mptcp DSS corruption due to large pmtu xmit 13842647: [5.15.y,5/6] mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow 13842648: [5.15.y,6/6] mptcp: prevent MPC handshake on port-based signal endpoints: - Series: mptcp: fix recent failed backports - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=900986&state=*&archive=both 13842663: [5.10.y,1/3] mptcp: track and update contiguous data status 13842664: [5.10.y,2/3] mptcp: handle consistently DSS corruption 13842665: [5.10.y,3/3] tcp: fix mptcp DSS corruption due to large pmtu xmit: - Series: mptcp: fix recent failed backports - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=900990&state=*&archive=both 13839735: [net-next,v2] tools: ynl-gen: use big-endian netlink attribute types: - Submitter: Asbjørn Sloth Tønnesen - URL: https://patchwork.kernel.org/project/mptcp/patch/20241017094704.3222173-1-ast@fiberby.net/ our repo (by: Davide Caratti, Geliang Tang, Matthieu Baerts): 13826745: [mptcp-next] mptcp: use "middlebox interference" for MP_TCPRST in case map_valid is false: - Submitter: Davide Caratti - URL: https://patchwork.kernel.org/project/mptcp/patch/4b2cee91613e597a172b46bb0d9d3143053c52da.1728408247.git.dcaratti@redhat.com/ 13838779: [mptcp-net,1/2] mptcp: init: protect sched with rcu_read_lock 13838780: [mptcp-net,2/2] Squash to "bpf: Add bpf_mptcp_sched_ops": - Series: mptcp: "fix suspicious RCU usage" warnings - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=899900&state=*&archive=both 13839796: [mptcp-net,1/2] mptcp: remove unneeded lock when listing scheds 13839797: [mptcp-net,2/2] selftests: mptcp: list sysctl data: - Series: mptcp: remove unneeded lock when listing scheds - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=900176&state=*&archive=both 13842002: [mptcp-next,v12,1/8] bpf: Register mptcp common kfunc set 13842004: [mptcp-next,v12,3/8] bpf: Acquire and release mptcp socket 13842005: [mptcp-next,v12,4/8] selftests/bpf: More endpoints for endpoint_init 13842006: [mptcp-next,v12,5/8] selftests/bpf: Add mptcp_subflow bpf_iter subtest 13842007: [mptcp-next,v12,6/8] Squash to "selftests/bpf: Add bpf scheduler test" 13842008: [mptcp-next,v12,7/8] Revert "bpf: Export more bpf_burst related functions" 13842009: [mptcp-next,v12,8/8] Squash to "bpf: Add bpf_mptcp_sched_kfunc_set": - Series: add mptcp_subflow bpf_iter - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=900798&state=*&archive=both 13845971: [mptcp-net] mptcp: no admin perm to list endpoints: - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20241022-mptcp-pm-dump-addr-admin-v1-1-9ad328d01817@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: Asbjørn Sloth Tønnesen, Matthieu Baerts, Yunsheng Lin): 13841633: [net-next,v22,12/14] net: replace page_frag with page_frag_cache: - This series will probably be split, no hurry 13843828: [net,1/3] mptcp: init: protect sched with rcu_read_lock 13843829: [net,2/3] mptcp: remove unneeded lock when listing scheds 13843830: [net,3/3] selftests: mptcp: list sysctl data: - Series: mptcp: sched: fix some lock issues - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=901302&state=*&archive=both - Sent recently 13844310: [net-next,1/4] mptcp: pm: send ACK on non-stale subflows 13844311: [net-next,2/4] mptcp: annotate data-races around subflow->fully_established 13844312: [net-next,3/4] mptcp: implement mptcp_pm_connection_closed 13844313: [net-next,4/4] mptcp: use "middlebox interference" RST when no DSS: - Series: mptcp: various small improvements - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/list/?series=901451&state=*&archive=both - Sent recently our repo (by: Geliang Tang, Gregory Detal, Matthieu Baerts): 12282219: [RESEND,RFC,2/4] tcp: move selected mptcp helpers to tcp.h/mptcp.h 12282221: [RESEND,RFC,4/4] tcp: parse tcp options contained in reset packets: 12282223: [RESEND,RFC,mptpcp-next] mptcp: add ooo prune support: 12282225: [RESEND,1/5] tcp: make two mptcp helpers available to tcp stack 12282227: [RESEND,5/5] mptcp: send fastclose if userspace closes socket with unread data: 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 is the same 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 is the same 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 is the same 13656189: [mptcp-net,v2] mptcp: fix the default value of scaling_ratio: - State: Changes requested - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/patch/0ccc1c26d27d6ee7be22806a97983d37c6ca548c.1715053270.git.tanggeliang@kylinos.cn/ - Status is the same 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 is the same 13750069: [mptcp-next,1/4] selftests: mptcp: add cfg_timeo for mptcp_connect 13750070: [mptcp-next,2/4] selftests: mptcp: add io thread mode for mptcp_connect 13750071: [mptcp-next,3/4] selftests: mptcp: enable io thread mode 13750072: [mptcp-next,4/4] selftests: mptcp: join: add io thread tests: - State: Changes requested - Series: add io thread mode tests - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=875830&state=*&archive=both - Status is the same 13829435: [mptcp-next,v3,1/1] selftests/bpf: Use make/remove netns helpers in mptcp: - State: Changes requested - Series: add netns helpers - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=897427&state=*&archive=both - reviewed, can be sent directly 13845248: [mptcp-next,v2,1/5] selftests/bpf: Add mptcp pm_nl_ctl link 13845249: [mptcp-next,v2,2/5] selftests/bpf: Use pm_nl_ctl if ip mptcp not supported 13845250: [mptcp-next,v2,3/5] bpf: Add mptcp_address bpf_iter 13845251: [mptcp-next,v2,4/5] bpf: Export more helpers used by mptcp_address test 13845252: [mptcp-next,v2,5/5] selftests/bpf: Add mptcp_address bpf_iter subtest: - State: New - Series: add mptcp_address bpf_iter - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=901713&state=*&archive=both 13845374: [mptcp-next,v2,01/36] mptcp: drop else in mptcp_pm_addr_families_match 13845375: [mptcp-next,v2,02/36] mptcp: use __lookup_addr in pm_netlink 13845376: [mptcp-next,v2,03/36] mptcp: add mptcp_for_each_address macros 13845377: [mptcp-next,v2,04/36] mptcp: use sock_kfree_s instead of kfree 13845378: [mptcp-next,v2,05/36] mptcp: add lookup_addr for userspace pm 13845379: [mptcp-next,v2,06/36] mptcp: add mptcp_userspace_pm_get_sock helper 13845380: [mptcp-next,v2,07/36] mptcp: make three pm wrappers static 13845381: [mptcp-next,v2,08/36] mptcp: drop skb parameter of get_addr 13845382: [mptcp-next,v2,09/36] mptcp: add id parameter for get_addr 13845383: [mptcp-next,v2,10/36] mptcp: add addr parameter for get_addr 13845384: [mptcp-next,v2,11/36] mptcp: reuse sending nlmsg code in get_addr 13845385: [mptcp-next,v2,12/36] mptcp: change info of get_addr as const 13845386: [mptcp-next,v2,13/36] mptcp: add struct mptcp_id_bitmap 13845387: [mptcp-next,v2,14/36] mptcp: refactor dump_addr with id bitmap 13845388: [mptcp-next,v2,15/36] mptcp: refactor dump_addr with get_addr 13845389: [mptcp-next,v2,16/36] mptcp: reuse sending nlmsg code in dump_addr 13845390: [mptcp-next,v2,17/36] mptcp: update local address flags when setting it 13845391: [mptcp-next,v2,18/36] mptcp: change rem type of set_flags 13845392: [mptcp-next,v2,19/36] mptcp: drop skb parameter of set_flags 13845393: [mptcp-next,v2,20/36] mptcp: add loc and rem for set_flags 13845394: [mptcp-next,v2,21/36] mptcp: update address type of get_local_id 13845395: [mptcp-next,v2,22/36] mptcp: change is_backup interfaces as get_flags 13845396: [mptcp-next,v2,23/36] mptcp: drop struct mptcp_pm_local 13845397: [mptcp-next,v2,24/36] mptcp: drop struct mptcp_pm_add_entry 13845398: [mptcp-next,v2,25/36] mptcp: change local type of subflow_destroy 13845399: [mptcp-next,v2,26/36] mptcp: hold pm lock when deleting entry 13845400: [mptcp-next,v2,27/36] mptcp: rename mptcp_pm_remove_addrs 13845401: [mptcp-next,v2,28/36] mptcp: drop free_list for deleting entries 13845402: [mptcp-next,v2,29/36] mptcp: define struct mptcp_pm_ops 13845403: [mptcp-next,v2,30/36] mptcp: implement userspace pm interfaces 13845404: [mptcp-next,v2,31/36] mptcp: register default userspace pm 13845405: [mptcp-next,v2,32/36] bpf: Add mptcp path manager struct_ops 13845406: [mptcp-next,v2,33/36] bpf: Register mptcp struct_ops kfunc set 13845407: [mptcp-next,v2,34/36] Squash to "bpf: Export mptcp packet scheduler helpers" 13845408: [mptcp-next,v2,35/36] selftests/bpf: Add mptcp userspace pm subtest 13845409: [mptcp-next,v2,36/36] selftests/bpf: Add mptcp bpf path manager subtest: - State: Under review - Series: BPF path manager - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=901761&state=*&archive=both 13846161: [mptcp-net] mptcp: pm: use _rcu variant under rcu_read_lock: - State: New - Submitter: Matthieu Baerts - URL: https://patchwork.kernel.org/project/mptcp/patch/20241022-mptcp-pm-lookup_addr_rcu-v1-1-19d45f26c872@kernel.org/ - even if we modify an entry, we don't modify the list itself - we should then use rcu_read_lock() instead of taking the spinlock, and probably use READ_ONCE/WRITE_ONCE on the flag (if thread safe) - TODO: Matth 13846824: [mptcp-next,v8,01/13] mptcp: check sk_stream_memory_free in loop 13846825: [mptcp-next,v8,02/13] mptcp: make mptcp_subflow_set_scheduled inline 13846826: [mptcp-next,v8,03/13] mptcp: add mptcp_validate_scheduler helper 13846827: [mptcp-next,v8,04/13] Squash to "bpf: Add bpf_mptcp_sched_ops" 13846828: [mptcp-next,v8,05/13] Squash to "selftests/bpf: Add bpf scheduler test" 13846829: [mptcp-next,v8,06/13] Squash to "selftests/bpf: Add bpf_first scheduler & test" 13846830: [mptcp-next,v8,07/13] Squash to "selftests/bpf: Add bpf_bkup scheduler & test" 13846831: [mptcp-next,v8,08/13] Squash to "selftests/bpf: Add bpf_rr scheduler & test" 13846832: [mptcp-next,v8,09/13] Squash to "selftests/bpf: Add bpf_red scheduler & test" 13846833: [mptcp-next,v8,10/13] Squash to "selftests/bpf: Add bpf_burst scheduler & test" 13846834: [mptcp-next,v8,11/13] Squash to "bpf: Export mptcp packet scheduler helpers" 13846835: [mptcp-next,v8,12/13] Revert "mptcp: add sched_data helpers" 13846836: [mptcp-next,v8,13/13] mptcp: drop subflow contexts in mptcp_sched_data: - State: New - Series: use bpf_iter in bpf schedulers - Submitter: Geliang Tang - URL: https://patchwork.kernel.org/project/mptcp/list/?series=902168&state=*&archive=both - it is likely possible we will have to iterate more in the BPF case Issues on GitHub: https://github.com/multipath-tcp/mptcp_net-next/issues/ Recently opened (latest from the last meeting: 520): 526 Question: MPTCP subflows are reconnected every now and then [question]: - Old kernel, maybe a bug that has been fixed - Subflows are removed during the connection on the client side: should be due to a modification of the MPTCP endpoints. No other causes? 525 tests: cover more MPTCP socket options [enhancement] [packetdrill] [selftests]: - To improve: https://ci-results.mptcp.dev/lcov/export/index.html 524 tests: cover more Diag-related code [selftests]: - To improve: https://ci-results.mptcp.dev/lcov/export/index.html 521 Implement psock_update_sk_prot, for eBPF SOCKMAP support [enhancement]: - Would be interesting to have to get good performances when using a proxy in BPF with sockmap. Bugs (opened, flagged as "bug" and assigned) 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) 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] 501 Why do endpoint tcp connections close? [bug] [feedback-needed] 499 selftests: `mptcp_connect.sh`: disconnect test timed out [bug] [selftests] 498 in-kernel PM: closed subflows before `RM_ADDR` will not decrement `add_addr_accepted` [bug] [pm] 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] 416 No new subflow when removing an endpoint and adding a new one [bug] [feedback-needed] 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) 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 234 Packetdrill: Support MPC+DATA+checksum error [enhancement] [packetdrill] @spoorva 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) None. Open questions (opened, questions and not assigned) 526 Question: MPTCP subflows are reconnected every now and then [question] 520 Question about proper MPTCP configuration over VPN. [question] 502 Question for ip-mptcp command [question] 489 IPv6 Rejoin Subflow [question] 459 Are the endpoint flags `signal` and `subflow` meant to be exclusive? or how to get MPTCP to work for both directions? [question] 452 mptcp causes the network to become very slow [question] 412 shadowsocks-libev not working, need guidance for PM configuration [question] 411 Problem with IPROTO [question] For later (opened and not assigned) 525 tests: cover more MPTCP socket options [enhancement] [packetdrill] [selftests] 524 tests: cover more Diag-related code [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] 515 Add `TCP_MAXSEG` socket option support [enhancement] 514 Add MIB counters for fallback to TCP [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] 397 Doc and guidance for users [enhancement] [documentation] 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] 333 New MIBs to help understanding issues when PM cannot create new subflows [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] 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 2024-10-09) 523 Suspicious RCU usage in `mptcp_sched_find` [bug] @matttbe 522 Test and Add MPTCP Schedulers [question] Packetdrill PRs 52 3 years ago dcaratti Add initial coverage for RM_ADDR mptcp.dev PRs: / mptcpd PRs 307 1 day ago matttbe scripts: debug: also print system info 306 14 days ago matttbe lib: switch to v4.0.1: only added items 305 14 days ago matttbe Some clean-ups 304 5 days ago matttbe Support listener events: - Matth: TODO: check to update the Debian version with just the patch to be compatible with newer ELL versions - Matth: TODO: modify the CI to run daily the test checking it still compiles with the last version of ELL (+ tests?) → 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 (6.13): https://github.com/orgs/multipath-tcp/projects/11 - For later: https://github.com/orgs/multipath-tcp/projects/1 Patches to send to NetDev: - Fixes for other trees: / - Fixes for -net: - [b8b8f6796065] mptcp: init: protect sched with rcu_read_lock (Matthieu Baerts (NGI0)) - [b4844683facd] mptcp: remove unneeded lock when listing scheds (Matthieu Baerts (NGI0)) - [598a075d877b] selftests: mptcp: list sysctl data (Matthieu Baerts (NGI0)): - sent, not applied yet - [023ee64ef5a3] mptcp: no admin perm to list endpoints (Matthieu Baerts (NGI0)): - TODO: send at some points → will check on Monday - Fixes for net-next: / - Features for net-next: - [f6d8fc67d62a] mptcp: pm: send ACK on non stale subflows (Matthieu Baerts (NGI0)) - [d855df01337a] mptcp: annotate data-races around subflow->fully_established (Gang Yan) - [8c3ca3bdf38b] mptcp: implement mptcp_pm_connection_closed (Geliang Tang) - [408519e69724] mptcp: use "middlebox interference" RST when no DSS (Davide Caratti): - sent, not applied yet - Features for net-next (next): / - Features for other trees: - [6add433f2563] bpf: Register mptcp common kfunc set (Geliang Tang) - [b2248cf6bbe1] bpf: Add mptcp_subflow bpf_iter (Geliang Tang) - [457ab85b18d1] bpf: Acquire and release mptcp socket (Geliang Tang) - [7b374224a3a8] selftests/bpf: More endpoints for endpoint_init (Geliang Tang) - [bf51ed0274b3] selftests/bpf: Add mptcp_subflow bpf_iter subtest (Geliang Tang): - probably best to wait: checking if it fits well with the BPF packet scheduler and PM - but we can certainly send that this cycle, maybe in 1 or 2 weeks? - [20e533bfcbc4] mptcp: add sched_data helpers (Geliang Tang) - [559d78357044] bpf: Add bpf_mptcp_sched_ops (Geliang Tang) - [98b44e897166] bpf: Export mptcp packet scheduler helpers (Geliang Tang) - [2c1edd35d248] selftests/bpf: Add bpf scheduler test (Geliang Tang) - [7f8ec946b5fb] selftests/bpf: Add bpf_first scheduler & test (Geliang Tang) - [42bbafeb98be] selftests/bpf: Add bpf_bkup scheduler & test (Geliang Tang) - [c8a885cf978a] selftests/bpf: Add bpf_rr scheduler & test (Geliang Tang) - [485d37231de9] selftests/bpf: Add bpf_red scheduler & test (Geliang Tang) - [083a2dc08499] selftests/bpf: Add bpf_burst scheduler & test (Geliang Tang) Extra tests: - news about Syzkaller? (Christoph): - - Packetdrill (Davide): - / - Patchew (Davide): - / - CI (Matth): - https://ci-results.mptcp.dev/flakes.html - https://netdev.bots.linux.dev/flakes.html?tn-needle=mptcp - There is a new mode: validating the MPTCP BPF tests with a debug kernel: - but it is flaky - there is a real known issue to fix there - TODO: Matth: find a solution → mark as flaky? fix the issue? Next meeting: - Next one on Wednesday, *in two weeks*, the 6th of November. - 17:30 UTC (8.30am PDT, 5.30pm CEST, 11.30pm CST) - Still open to everyone! - https://annuel2.framapad.org/p/mptcp_upstreaming_20241106 Feel free to comment on these topics and suggest new ones for the next meeting! Talk to you on Wednesday, Matt -- Sponsored by the NGI0 Core fund.