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);
ARGUMENTS length length to allocate
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. Although this function allocates memory it can be called from an interrupt.
COPYRIGHT Kernel Hackers Manual 2.6. July 2015 DEV_ALLOC_SKB(9)