suse man page for skb_recycle_check

SKB_RECYCLE_CHECK(9)						 Linux Networking					      SKB_RECYCLE_CHECK(9)

NAME
       skb_recycle_check - check if skb can be reused for receive

SYNOPSIS
       int skb_recycle_check(struct sk_buff * skb, int skb_size);

ARGUMENTS
       skb
	   buffer

       skb_size
	   minimum receive buffer size

DESCRIPTION
       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.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010						      SKB_RECYCLE_CHECK(9)