SKB_COW_HEAD(9)                          Linux Networking                         SKB_COW_HEAD(9)



NAME
       skb_cow_head - skb_cow but only making the head writable

SYNOPSIS
       int skb_cow_head(struct sk_buff * skb, unsigned int headroom);

ARGUMENTS
       skb
           buffer to cow

       headroom
           needed headroom

DESCRIPTION
       This function is identical to skb_cow except that we replace the skb_cloned check by
       skb_header_cloned. It should be used when you only need to push on some header and do not
       need to modify the data.

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