Eric Dumazet 9580bf2edb net: relax expensive skb_unclone() in iptunnel_handle_offloads()
Locally generated TCP GSO packets having to go through a GRE/SIT/IPIP
tunnel have to go through an expensive skb_unclone()

Reallocating skb->head is a lot of work.

Test should really check if a 'real clone' of the packet was done.

TCP does not care if the original gso_type is changed while the packet
travels in the stack.

This adds skb_header_unclone() which is a variant of skb_clone()
using skb_header_cloned() check instead of skb_cloned().

This variant can probably be used from other points.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-03 00:22:19 -04:00
..
2016-04-13 10:41:10 +02:00
2016-03-10 20:54:09 -05:00
2016-03-17 21:05:01 -04:00
2015-11-30 14:47:33 -05:00
2016-04-21 13:59:08 -04:00
2016-02-14 14:36:04 -08:00
2016-03-09 16:36:15 -05:00
2015-10-23 03:05:19 -07:00
2016-04-25 15:09:10 -04:00
2016-04-14 16:23:40 -04:00
2016-04-27 22:48:23 -04:00
2016-03-21 22:56:38 -04:00