mptcp: Use per-subflow storage for DATA_FIN sequence number

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Instead of reading the MPTCP-level sequence number when sending DATA_FIN,
store the data in the subflow so it can be safely accessed when the
subflow TCP headers are written to the packet without the MPTCP-level
lock held. This also allows the MPTCP-level socket to close individual
subflows without closing the MPTCP connection.

Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Mat Martineau 2020-02-28 15:47:40 -08:00 • committed by David S. Miller

parent 1954b86016

commit 76c42a29c0

3 changed files with 21 additions and 6 deletions

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5

net/mptcp/options.c

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20

net/mptcp/protocol.c

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2

net/mptcp/protocol.h

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