Hello, Today, we had our 73rd (scary) meeting with Mat, Peter and Ossama (Intel OTC), Christoph (Apple), Paolo, Florian and Davide (RedHat) and myself (Tessares). Thanks again for this new good meeting! Here are the minutes of the meeting: Accepted patches: - mptcp: switch mptcp_poll to use parent sock wait queue: - include: mptcp: sendmsg scheduler skeleton - include: mptcp_poll should not block on each subflow: - by Florian - Accepted by Paolo - selftests: mptcp: increase test coverage: - include: selftests: fixes and improvements - include: prepare for mptcp ipv6 support - by Florian - Accepted by Mat - With a fix from Mat (capture options) - selftests:mptcp: increase timeout: - by Matth - v2 - Fix bug processing options: - by Peter - Accepted by Mat - (+ fixed a compilation error) - self-tests: catch poll errors: - by Paolo - Accepted by Florian - Small improvement in kselftests: - by Matth - accepted by Mat - Fix issues in prerequisite [IPv6] patches: - by Peter - v2 accepted by Paolo - *Peter*: there is a comment by Paolo: patch 2/2 will allow mptcp clients to either ipv4 and ipv6 subflows, if the server allows/supports that - e.g. mptcp.org server Pending patches: - mptcp: Add DATA_FIN transmission and handling: - by Mat - (old) RFC - Commented by Paolo, Christoph - IPv6 support: - by Peter - (new) v1 - v1 Commented by Paolo, Davide - mptcp: add primitive scheduler: - by Florian - (new) v1 - v2 expected Remaining items for the initial submission: Planning: - Part 1 (mainly TCP changes, will be sent with Part 2): - MAINTAINERS file - Part 2 (minimum set for MPTCP, up to KSelftests, one subflow): - IPv6 support - MPTCPv1 support - opti in TCP options? - Send DATA_FIN, no corner cases - if the peer never sends MPTCP-level ACK, a lot of memory will be used - Part 3 (after the KSelftests, to be sent ideally before the end of the year) - Full DATA_FIN support - Shared recv window - Active backup support Remaining items for the initial submission: Update: - IPv6 support: - Peter is working on it - patches are almost ready, mostly some changes needed related to KConfig - maybe separated files? Seems not needed now (specific changes are small), could be done later once upstream - ideally we would need CONFIG_MPTCP_IPV6=y by default - MPTCP v1 support: - Better to keep v1 patch alone with Christoph as an author - Still need to check how we arrange patches but the idea is to have v0 and v1 support in the same patch-set (series) - Christoph is working on it - Paolo: Looking at the code (mptcp.org), it seems to me the above does not implement/use sha256, but it still relies on sha1 hmac: - Should be SHA256 - additional patches are required (but small) - Wireshark and TCPDump do not support MPTCPv1: - Wireshark: https://code.wireshark.org/review/#/c/34896/ - DATA_FIN: - Mat is working on it - "Basic" support: send the data fin (at least one, will see later for the retransmissions, receive, etc.) - will share an update soon - Shared recv window: - work to be done - Active backup support: - Florian is working on it - optimisation of options in TCP "struct mptcp_options_received": - Peter is working on it - if the peer never sends MPTCP-level ACK, a lot of memory will be used: - Florian is working on that - quite tricky to fix but important - MAINTAINERS file - TODO Netdev: - no feedback - should we send a new message? - maybe now better to wait for part 2 to be ready instead of sending a new message to have some feedbacks exported branch: - some code chunks should be moved to other patches: - Paolo will send an email about that - in some code of .h files, some spaces/tabs are used while it should be the opposite: - Peter will look at that when optimising stuff in struct mptcp_options_received Patchwork: - no news from the maintainers Next meeting: - We propose to have it next Thursday, the 7th of November. - *Back to the usual time* (for most of us): 17:00 UTC (9am PST, 6pm CET) - Still open to everyone! - https://annuel2.framapad.org/p/mptcp_upstreaming_20191107 Feel free to comment on these points and propose new ones for the next meeting! Talk to you next week, Matt -- Matthieu Baerts | R&D Engineer matthieu.baerts(a)tessares.net Tessares SA | Hybrid Access Solutions www.tessares.net 1 Avenue Jean Monnet, 1348 Louvain-la-Neuve, Belgium