SKB_TAILROOM_RESERVE(9)                  Linux Networking                 SKB_TAILROOM_RESERVE(9)



NAME
       skb_tailroom_reserve - adjust reserved_tailroom

SYNOPSIS
       void skb_tailroom_reserve(struct sk_buff * skb, unsigned int mtu,
                                 unsigned int needed_tailroom);

ARGUMENTS
       skb
           buffer to alter

       mtu
           maximum amount of headlen permitted

       needed_tailroom
           minimum amount of reserved_tailroom

DESCRIPTION
       Set reserved_tailroom so that headlen can be as large as possible but not larger than mtu
       and tailroom cannot be smaller than needed_tailroom. The required headroom should already
       have been reserved before using this function.

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