| commit | 9580bf2edb402b3afaf9c5a4efb6953f993ef52e | |
| author | Eric Dumazet <edumazet@google.com> | |
| Sat, 30 Apr 2016 17:19:29 +0000 (30 10:19 -0700) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Tue, 3 May 2016 04:22:19 +0000 (3 00:22 -0400) | ||
| tree | ead375015918eb32b6ad7cb73a00a5567b8378ed | treesnapshot (tar.gz zip) |
| parent | c0ef079ca791ef9e057ac748051425a768c9e192 | commitdiff |
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>
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>
| include/linux/skbuff.h | diffblobblamehistory | |
| net/ipv4/ip_tunnel_core.c | diffblobblamehistory |