tun: reserve extra headroom only when XDP is set

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We reserve headroom unconditionally which could cause unnecessary
stress on socket memory accounting because of increased trusesize. Fix
this by only reserve extra headroom when XDP is set.

Cc: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jason Wang 2017-09-04 11:36:08 +08:00 • committed by David S. Miller

parent 9e776f225d

commit 7df13219d7

1 changed files with 18 additions and 8 deletions

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drivers/net/tun.c

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