diff options
| author | Christoph Hellwig <hch@lst.de> | 2006-07-31 22:35:23 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-08-02 13:38:25 -0700 |
| commit | 8af2745645243b5e5b031504a643bf2158571dc7 (patch) | |
| tree | 32bf05d47473c2b586daee33f343e0eea1bbf943 /include | |
| parent | 52499afe40387524e9f46ef9ce4695efccdd2ed9 (diff) | |
[NET]: Add netdev_alloc_skb().
Add a dev_alloc_skb variant that takes a struct net_device * paramater.
For now that paramater is unused, but I'll use it to allocate the skb
from node-local memory in a follow-up patch. Also there have been some
other plans mentioned on the list that can use it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/skbuff.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 4307e764ef0..b91fbfb7d54 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1104,6 +1104,28 @@ static inline struct sk_buff *dev_alloc_skb(unsigned int length) return __dev_alloc_skb(length, GFP_ATOMIC); } +extern struct sk_buff *__netdev_alloc_skb(struct net_device *dev, + unsigned int length, gfp_t gfp_mask); + +/** + * netdev_alloc_skb - allocate an skbuff for rx on a specific device + * @dev: network device to receive on + * @length: length to allocate + * + * Allocate a new &sk_buff and assign it a usage count of one. The + * buffer has unspecified headroom built in. Users should allocate + * the headroom they think they need without accounting for the + * built in space. The built in space is used for optimisations. + * + * %NULL is returned if there is no free memory. Although this function + * allocates memory it can be called from an interrupt. + */ +static inline struct sk_buff *netdev_alloc_skb(struct net_device *dev, + unsigned int length) +{ + return __netdev_alloc_skb(dev, length, GFP_ATOMIC); +} + /** * skb_cow - copy header of skb when it is required * @skb: buffer to cow |