macvtap: set transport header before passing skb to lower device

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Set the transport header for 1) some drivers (e.g ixgbe) needs l4 header 2)
precise packet length estimation (introduced in 1def9238) needs l4 header to
compute header length.

For the packets with partial checksum, the patch just set the transport header
to csum_start. Otherwise tries to use skb_flow_dissect() to get l4 offset, if it
fails, just pretend no l4 header.

Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jason Wang 2013-03-25 20:19:55 +00:00 • committed by David S. Miller

parent a88b9ce5ad

commit 9b4d669bc0

1 changed files with 9 additions and 0 deletions

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drivers/net/macvtap.c

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