mptcp: consolidate initial ack seq generation

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Currently the initial ack sequence is generated on demand whenever
it's requested and the remote key is handy. The relevant code is
scattered in different places and can lead to multiple, unneeded,
crypto operations.

This change consolidates the ack sequence generation code in a single
helper, storing the sequence number at the subflow level.

The above additionally saves a few conditional in fast-path and will
simplify the upcoming fast-open implementation.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Paolo Abeni 2022-11-25 23:29:49 +01:00 • committed by Jakub Kicinski

parent fe33d38626

commit b3ea6b272d

4 changed files with 45 additions and 45 deletions

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5

net/mptcp/options.c

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19

net/mptcp/protocol.c

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9

net/mptcp/protocol.h

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57

net/mptcp/subflow.c

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