diff options
| author | Eric Dumazet <edumazet@google.com> | 2012-05-19 07:02:02 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-20 02:34:57 +0400 |
| commit | bad43ca8325f493dcaa0896c2f036276af059c7e (patch) | |
| tree | ee27a3b3eeef928f22cd500a32a23e4db60a5584 /include/linux/skbuff.h | |
| parent | 3dde25988292864a582b4a9389b1ae835aa3fe80 (diff) | |
| download | linux-bad43ca8325f493dcaa0896c2f036276af059c7e.tar.xz | |
net: introduce skb_try_coalesce()
Move tcp_try_coalesce() protocol independent part to
skb_try_coalesce().
skb_try_coalesce() can be used in IPv4 defrag and IPv6 reassembly,
to build optimized skbs (less sk_buff, and possibly less 'headers')
skb_try_coalesce() is zero copy, unless the copy can fit in destination
header (its a rare case)
kfree_skb_partial() is also moved to net/core/skbuff.c and exported,
because IPv6 will need it in patch (ipv6: use skb coalescing in
reassembly).
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index fe37c21d3a60..0e501714d47f 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -562,6 +562,11 @@ extern void kfree_skb(struct sk_buff *skb); extern void consume_skb(struct sk_buff *skb); extern void __kfree_skb(struct sk_buff *skb); extern struct kmem_cache *skbuff_head_cache; + +extern void kfree_skb_partial(struct sk_buff *skb, bool head_stolen); +extern bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from, + bool *fragstolen, int *delta_truesize); + extern struct sk_buff *__alloc_skb(unsigned int size, gfp_t priority, int fclone, int node); extern struct sk_buff *build_skb(void *data, unsigned int frag_size); |