General definitions for network packets and their helper functions. More...

Detailed Description

General definitions for network packets and their helper functions.

Author: Martine Lenders mlend.nosp@m.ers@.nosp@m.inf.f.nosp@m.u-be.nosp@m.rlin..nosp@m.de; Hauke Petersen hauke.nosp@m..pet.nosp@m.ersen.nosp@m.@fu-.nosp@m.berli.nosp@m.n.de

Definition in file pkt.h.

#include <inttypes.h>
#include <stdlib.h>
#include "sched.h"
#include "net/gnrc/nettype.h"
#include "list.h"

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Data Structures
struct	gnrc_pktsnip
	Type to represent parts (either headers or payload) of a packet, called snips. More...

Typedefs
typedef struct gnrc_pktsnip	gnrc_pktsnip_t
	Type to represent parts (either headers or payload) of a packet, called snips.

Functions
static gnrc_pktsnip_t *	gnrc_pkt_prev_snip (gnrc_pktsnip_t pkt, gnrc_pktsnip_t snip)
	Returns the snip before a given snip in a packet.

static size_t	gnrc_pkt_len (const gnrc_pktsnip_t *pkt)
	Calculates length of a packet in byte.

static gnrc_pktsnip_t *	gnrc_pkt_append (gnrc_pktsnip_t pkt, gnrc_pktsnip_t snip)
	Appends a snip to a packet.

static gnrc_pktsnip_t *	gnrc_pkt_prepend (gnrc_pktsnip_t pkt, gnrc_pktsnip_t snip)
	Prepends a snip to a packet.

static gnrc_pktsnip_t *	gnrc_pkt_delete (gnrc_pktsnip_t pkt, gnrc_pktsnip_t snip)
	Deletes a snip from a packet.

static size_t	gnrc_pkt_len_upto (const gnrc_pktsnip_t *pkt, gnrc_nettype_t type)
	Calculates length of a packet in byte up to (including) a snip with the given type.

static size_t	gnrc_pkt_count (const gnrc_pktsnip_t *pkt)
	Count the numbers of snips in the given packet.

gnrc_pktsnip_t *	gnrc_pktsnip_search_type (gnrc_pktsnip_t *pkt, gnrc_nettype_t type)
	Searches the packet for a packet snip of a specific type.

Data Structures