skb_tailroom(9) centos man page | unix.com

SKB_TAILROOM(9) 						 Linux Networking						   SKB_TAILROOM(9)

NAME
       skb_tailroom - bytes at buffer end

SYNOPSIS
       int skb_tailroom(const struct sk_buff * skb);

ARGUMENTS
       skb
	   buffer to check

DESCRIPTION
       Return the number of bytes of free space at the tail of an sk_buff

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							   SKB_TAILROOM(9)