skb_reserve(9) centos man page | unix.com

SKB_RESERVE(9)							 Linux Networking						    SKB_RESERVE(9)

NAME
       skb_reserve - adjust headroom

SYNOPSIS
       void skb_reserve(struct sk_buff * skb, int len);

ARGUMENTS
       skb
	   buffer to alter

       len
	   bytes to move

DESCRIPTION
       Increase the headroom of an empty sk_buff by reducing the tail room. This is only allowed for an empty buffer.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							    SKB_RESERVE(9)