skb_peek (9) - Linux Manuals

skb_peek: peek at the head of an sk_buff_head

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

NAME

skb_peek - peek at the head of an sk_buff_head

SYNOPSIS

struct sk_buff * skb_peek(const struct sk_buff_head * list_);

ARGUMENTS

list_

: list to peek at

DESCRIPTION

Peek an sk_buff. Unlike most other operations you _MUST_ be careful with this one. A peek leaves the buffer on the list and someone else may run off with it. You must hold the appropriate locks or have a private queue to do this.

Returns NULL for an empty list or a pointer to the head element. The reference count is not incremented and the reference is therefore volatile. Use with caution.