skb_cloned(9) centos man page | unix.com

SKB_CLONED(9)							 Linux Networking						     SKB_CLONED(9)

NAME
       skb_cloned - is the buffer a clone

SYNOPSIS
       int skb_cloned(const struct sk_buff * skb);

ARGUMENTS
       skb
	   buffer to check

DESCRIPTION
       Returns true if the buffer was generated with skb_clone and is one of multiple shared copies of the buffer. Cloned buffers are shared data
       so must not be written to under normal circumstances.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							     SKB_CLONED(9)