suse man page for __dev_alloc_skb

__DEV_ALLOC_SKB(9)						 Linux Networking						__DEV_ALLOC_SKB(9)

NAME
       __dev_alloc_skb - allocate an skbuff for receiving

SYNOPSIS
       struct sk_buff * __dev_alloc_skb(unsigned int length, gfp_t gfp_mask);

ARGUMENTS
       length
	   length to allocate

       gfp_mask
	   get_free_pages mask, passed to alloc_skb

DESCRIPTION
       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.

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