veth: extend features to support tunneling

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While investigating on a recent vxlan regression, I found veth
was using a zero features set for vxlan tunnels.

We have to segment GSO frames, copy the payload, and do the checksum.

This patch brings a ~200% performance increase

We probably have to add hw_enc_features support
on other virtual devices.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2013-10-25 18:25:03 -07:00 • committed by David S. Miller

parent 8c3a897bfa

commit 82d8189826

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3

drivers/net/veth.c

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