tuntap: simplify error handling in tun_build_skb()

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There's no need to duplicate page get logic in each action. So this
patch tries to get page and calculate the offset before processing XDP
actions (except for XDP_DROP), and undo them when meet errors (we
don't care the performance on errors). This will be used for factoring
out XDP logic.

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

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Jason Wang 2018-09-12 11:17:02 +08:00 • committed by David S. Miller

parent 291aeb2b1d

commit f7053b6ccb

1 changed files with 3 additions and 7 deletions

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10

drivers/net/tun.c

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