diff options
| author | Lennert Buytenhek <buytenh@marvell.com> | 2008-10-01 02:33:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-10-01 02:33:12 -0700 |
| commit | 04a4bb55bcf35b63d40fd2725e58599ff8310dd7 (patch) | |
| tree | a4be70eeb5b33829467851904fcdc26522c24a68 /include/linux/skbuff.h | |
| parent | 788df7322a7543a337c1ea400d38b621346ea78e (diff) | |
| download | lwn-04a4bb55bcf35b63d40fd2725e58599ff8310dd7.tar.gz lwn-04a4bb55bcf35b63d40fd2725e58599ff8310dd7.zip | |
net: add skb_recycle_check() to enable netdriver skb recycling
This patch adds skb_recycle_check(), which can be used by a network
driver after transmitting an skb to check whether this skb can be
recycled as a receive buffer.
skb_recycle_check() checks that the skb is not shared or cloned, and
that it is linear and its head portion large enough (as determined by
the driver) to be recycled as a receive buffer. If these conditions
are met, it does any necessary reference count dropping and cleans
up the skbuff as if it just came from __alloc_skb().
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index a19ea43fea02..720b688c22b6 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -383,6 +383,8 @@ static inline struct sk_buff *alloc_skb_fclone(unsigned int size, return __alloc_skb(size, priority, 1, -1); } +extern int skb_recycle_check(struct sk_buff *skb, int skb_size); + extern struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src); extern struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t priority); |