centos man page for skb_clone

SKB_CLONE(9)							 Linux Networking						      SKB_CLONE(9)

NAME
       skb_clone - duplicate an sk_buff

SYNOPSIS
       struct sk_buff * skb_clone(struct sk_buff * skb, gfp_t gfp_mask);

ARGUMENTS
       skb
	   buffer to clone

       gfp_mask
	   allocation priority

DESCRIPTION
       Duplicate an sk_buff. The new one is not owned by a socket. Both copies share the same packet data but not structure. The new buffer has a
       reference count of 1. If the allocation fails the function returns NULL otherwise the new buffer is returned.

       If this function is called from an interrupt gfp_mask must be GFP_ATOMIC.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							      SKB_CLONE(9)