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Merge branch 'udp-gro-L4'

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Paolo Abeni says:

====================
udp: GRO L4 improvements

This series improves the UDP L4 - either 'forward' or 'frag_list' -
co-existence with UDP tunnel GRO, allowing the first to take place
correctly even for encapsulated UDP traffic.

The first for patches are mostly bugfixes, addressing some GRO
edge-cases when both tunnels and L4 are present, enabled and in use.

The next 3 patches avoid unneeded segmentation when UDP GRO
traffic traverses in the receive path UDP tunnels.

Finally, some self-tests are included, covering the relevant
GRO scenarios.

Even if most patches are actually bugfixes, this series is
targeting net-next, as overall it makes available a new feature.

v2 -> v3:
 - no code changes, more verbose commit messages and comment in
   patch 1/8

v1 -> v2:
 - restrict post segmentation csum fixup to the only the relevant pkts
 - use individual 'accept_gso_type' fields instead of whole gso bitmask
   (Willem)
 - use only ipv6 addesses from test range in self-tests (Willem)
 - hopefully clarified most individual patches commit messages
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2021-03-30 17:06:50 -07:00
commit df82e9c6dd
11 changed files with 323 additions and 13 deletions
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