SKB_SHARE_CHECK(9)                       Linux Networking                      SKB_SHARE_CHECK(9)



NAME
       skb_share_check - check if buffer is shared and if so clone it

SYNOPSIS
       struct sk_buff * skb_share_check(struct sk_buff * skb, gfp_t pri);

ARGUMENTS
       skb
           buffer to check

       pri
           priority for memory allocation

DESCRIPTION
       If the buffer is shared the buffer is cloned and the old copy drops a reference. A new
       clone with a single reference is returned. If the buffer is not shared the original buffer
       is returned. When being called from interrupt status or with spinlocks held pri must be
       GFP_ATOMIC.

       NULL is returned on a memory allocation failure.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                        SKB_SHARE_CHECK(9)