net: add documentation for skb recycling (d1a203ea) · Commits · 戴 / test

Commit ("net: add skb_recycle_check() to enable netdriver skb recycling") added a method for network drivers to recycle skbuffs, but while use of this mechanism was documented in the commit message, it should really have been added as a docbook comment as well -- this patch does that. Signed-off-by:

Stephen Hemminger <shemminger@vyatta.com> Signed-off-by:

Lennert Buytenhek <buytenh@marvell.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

net/core/skbuff.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -449,6 +449,18 @@ void kfree_skb(struct sk_buff *skb)
		__kfree_skb(skb);
		}

		/**
		* skb_recycle_check - check if skb can be reused for receive
		* @skb: buffer
		* @skb_size: minimum receive buffer size
		*
		* Checks that the skb passed in is not shared or cloned, and
		* that it is linear and its head portion at least as large as
		* skb_size so that it can be recycled as a receive buffer.
		* If these conditions are met, this function does any necessary
		* reference count dropping and cleans up the skbuff as if it
		* just came from __alloc_skb().
		*/
		int skb_recycle_check(struct sk_buff *skb, int skb_size)
		{
		struct skb_shared_info *shinfo;

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