l2tp: give proper headroom in pppol2tp_xmit()

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pppol2tp_xmit() calls skb_cow_head(skb, 2) before calling
l2tp_xmit_skb()

Then l2tp_xmit_skb() calls again skb_cow_head(skb, large_headroom)

This patchs changes the first skb_cow_head() call to supply the needed
headroom to make sure at most one (expensive) pskb_expand_head() is
done.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Eric Dumazet 2011-10-07 05:45:57 +00:00 • committed by David S. Miller

parent bc416d9768

commit 09df57ca60

1 changed files with 8 additions and 1 deletions

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net/l2tp/l2tp_ppp.c

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