skb_tailroom_reserve (9) - Linux Manuals

skb_tailroom_reserve: adjust reserved_tailroom

Command to display skb_tailroom_reserve manual in Linux: $ man 9 skb_tailroom_reserve

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.