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authorChristoph Hellwig <hch@lst.de>2006-07-31 22:35:23 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-08-02 13:38:25 -0700
commit8af2745645243b5e5b031504a643bf2158571dc7 (patch)
tree32bf05d47473c2b586daee33f343e0eea1bbf943 /include
parent52499afe40387524e9f46ef9ce4695efccdd2ed9 (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.h22
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