mptcp: handle consistently DSS corruption

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Bugged peer implementation can send corrupted DSS options, consistently
hitting a few warning in the data path. Use DEBUG_NET assertions, to
avoid the splat on some builds and handle consistently the error, dumping
related MIBs and performing fallback and/or reset according to the
subflow type.

Fixes: 6771bfd9ee ("mptcp: update mptcp ack sequence from work queue")
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241008-net-mptcp-fallback-fixes-v1-1-c6fb8e93e551@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Paolo Abeni 2024-10-08 13:04:52 +02:00 • committed by Jakub Kicinski

parent d94785bb46

commit e32d262c89

4 changed files with 28 additions and 4 deletions

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2

net/mptcp/mib.c

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2

net/mptcp/mib.h

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24

net/mptcp/protocol.c

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4

net/mptcp/subflow.c

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