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[net-next,0/5] mptcp: Optimize received options handling

Message ID 20210827004455.286754-1-mathew.j.martineau@linux.intel.com
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Series mptcp: Optimize received options handling | expand

Message

Mat Martineau Aug. 27, 2021, 12:44 a.m. UTC 
These patches optimize received MPTCP option handling in terms of both
storage and fewer conditionals to evaluate in common cases, and also add
a couple of cleanup patches.

Patches 1 and 5 do some cleanup in checksum option parsing and
clarification of lock handling.

Patches 2 and 3 rearrange struct mptcp_options_received to shrink it
slightly and consolidate frequently used fields in the same cache line.

Patch 4 optimizes incoming MPTCP option parsing to skip many extra
comparisons in the common case where only a DSS option is present.


Paolo Abeni (5):
  mptcp: do not set unconditionally csum_reqd on incoming opt
  mptcp: better binary layout for mptcp_options_received
  mptcp: consolidate in_opt sub-options fields in a bitmask
  mptcp: optimize the input options processing
  mptcp: make the locking tx schema more readable

 net/mptcp/options.c  | 141 +++++++++++++++++++------------------------
 net/mptcp/protocol.c |  14 +++--
 net/mptcp/protocol.h |  36 ++++++-----
 net/mptcp/subflow.c  |  40 ++++++------
 4 files changed, 112 insertions(+), 119 deletions(-)


base-commit: deecae7d96843fceebae06445b3f4bf8cceca31a