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Line 28: − − === Add support for checkpoint/restore of CORK-ed UDP socket === − − '''Summary:''' Support C/R of corked UDP socket − − There's UDP_CORK option for sockets. As man page says: − <pre> − If this option is enabled, then all data output on this socket − is accumulated into a single datagram that is transmitted when − the option is disabled. This option should not be used in − code intended to be portable. − </pre> − − Currently criu refuses to dump this case, so it's effectively a bug. Supporting − this will need extending the kernel API to allow criu read back the write queue − of the socket (see [[TCP connection|how it's done]] for TCP sockets, for example). Then − the queue is written into the image and is restored into the socket (with the CORK − bit set too). − − '''Links:''' − * https://github.com/checkpoint-restore/criu/issues/409 − * https://github.com/criupatchwork/criu/commit/a532312 − * [[Sockets]], [[TCP connection]] − * [[https://groups.google.com/forum/#!topic/comp.os.linux.networking/Uz8PYiTCZSg UDP cork explained]] − − '''Details:''' − * Skill level: intermediate (+linux kernel) − * Language: C − * Expected size: 350 hours − * Mentors: Alexander Mikhalitsyn <alexander@mihalicyn.com>, Pavel Tikhomirov <ptikhomirov@virtuozzo.com>, Andrei Vagin <avagin@gmail.com>
→Project ideas
* Suggested by: Andrei Vagin <avagin@gmail.com>
* Suggested by: Andrei Vagin <avagin@gmail.com>
* Mentors: Alexander Mikhalitsyn <alexander@mihalicyn.com>, Andrei Vagin <avagin@gmail.com>
* Mentors: Alexander Mikhalitsyn <alexander@mihalicyn.com>, Andrei Vagin <avagin@gmail.com>
=== Use eBPF to lock and unlock the network ===
=== Use eBPF to lock and unlock the network ===