frag.h File Reference

GNRC fragmentation extension definitions. More...

Detailed Description

GNRC fragmentation extension definitions.

Author

Martine Lenders m.len.nosp@m.ders.nosp@m.@fu-b.nosp@m.erli.nosp@m.n.de

Definition in file frag.h.

#include <stdbool.h>
#include <stdint.h>
#include "clist.h"
#include "net/gnrc/pkt.h"
#include "net/gnrc/pktbuf.h"
#include "net/ipv6/hdr.h"

Include dependency graph for frag.h:

Go to the source code of this file.

Data Structures
struct	gnrc_ipv6_ext_frag_limits
	Data type to describe limits of a single fragment in the reassembly buffer. More...
struct	gnrc_ipv6_ext_frag_send_t
	Fragmentation send buffer type. More...
struct	gnrc_ipv6_ext_frag_rbuf_t
	A reassembly buffer entry. More...
struct	gnrc_ipv6_ext_frag_stats_t
	Statistics on reassembly and reassembly. More...

Macros
#define	GNRC_IPV6_EXT_FRAG_RBUF_GC   (0xfe00U)
	Message type to time reassembly buffer garbage collection.
#define	GNRC_IPV6_EXT_FRAG_CONTINUE   (0xfe01U)
	Message type to continue fragmenting a datagram from a given fragmentation send buffer.
#define	GNRC_IPV6_EXT_FRAG_SEND   (0xfe02U)
	Message type to send a fragment of an IPv6 datagram.

Typedefs
typedef struct gnrc_ipv6_ext_frag_limits	gnrc_ipv6_ext_frag_limits_t
	Data type to describe limits of a single fragment in the reassembly buffer.

Functions
void	gnrc_ipv6_ext_frag_init (void)
	Initializes IPv6 fragmentation and reassembly.
void	gnrc_ipv6_ext_frag_send_pkt (gnrc_pktsnip_t *pkt, unsigned path_mtu)
	Send an IPv6 packet fragmented.
void	gnrc_ipv6_ext_frag_send (gnrc_ipv6_ext_frag_send_t *snd_buf)
	(Continue to) fragment packet already in fragmentation send buffer
gnrc_pktsnip_t *	gnrc_ipv6_ext_frag_reass (gnrc_pktsnip_t *pkt)
	Reassemble fragmented IPv6 packet.
gnrc_ipv6_ext_frag_stats_t *	gnrc_ipv6_ext_frag_stats (void)
	Get the current statistics on reassembly and fragmentation.

Reassembly buffer operations
gnrc_ipv6_ext_frag_rbuf_t *	gnrc_ipv6_ext_frag_rbuf_get (ipv6_hdr_t *ipv6, uint32_t id)
	Get a reassembly buffer by the identifying parameters.
void	gnrc_ipv6_ext_frag_rbuf_free (gnrc_ipv6_ext_frag_rbuf_t *rbuf)
	Frees a reassembly buffer entry (but does not release its gnrc_ipv6_ext_frag_rbuf_t::pkt)
static void	gnrc_ipv6_ext_frag_rbuf_del (gnrc_ipv6_ext_frag_rbuf_t *rbuf)
	Delete a reassembly buffer entry (and release its gnrc_ipv6_ext_frag_rbuf_t::pkt)
void	gnrc_ipv6_ext_frag_rbuf_gc (void)
	Garbage-collect reassembly buffer.