sicslowpan.c File Reference

6LoWPAN implementation (RFC 4944 and RFC 6282) More...

#include <string.h>
#include "contiki.h"
#include "dev/watchdog.h"
#include "net/link-stats.h"
#include "net/ipv6/uipopt.h"
#include "net/ipv6/tcpip.h"
#include "net/ipv6/uip.h"
#include "net/ipv6/uip-ds6.h"
#include "net/ipv6/uipbuf.h"
#include "net/ipv6/sicslowpan.h"
#include "net/netstack.h"
#include "net/packetbuf.h"
#include "net/queuebuf.h"
#include "net/routing/routing.h"
#include "sys/log.h"

Go to the source code of this file.

Macros
#define	LOG_MODULE   "6LoWPAN"
	FOR RFC 6282 COMPLIANCE TODO: -Add compression options to UDP, currently only supports both ports compressed or both ports elided.
Pointers in the packetbuf buffer
Pointers in the sicslowpan and uip buffer

Functions
static void	add_paging_dispatch (uint8_t page)
	Adds Paging dispatch byte.
static void	add_6lorh_hdr (void)
	Adds 6lorh headers before IPHC.
static void	digest_paging_dispatch (void)
	Digest 6lorh headers before IPHC.
static void	digest_6lorh_hdr (void)
	Digest 6lorh headers before IPHC.
IPHC related functions
static struct sicslowpan_addr_context *	addr_context_lookup_by_prefix (uip_ipaddr_t *ipaddr)
	find the context corresponding to prefix ipaddr
static struct sicslowpan_addr_context *	addr_context_lookup_by_number (uint8_t number)
	find the context with the given number
static int	compress_hdr_iphc (void)
	Compress IP/UDP header.
static bool	uncompress_hdr_iphc (uint8_t *buf, uint16_t buf_size, uint16_t ip_len)
	Uncompress IPHC (i.e., IPHC and LOWPAN_UDP) headers and put them in sicslowpan_buf.
IPv6 dispatch "compression" function
Input/output functions common to all compression schemes
static void	packet_sent (void *ptr, int status, int transmissions)
	Callback function for the MAC packet sent callback.
static void	send_packet (void)
	This function is called by the 6lowpan code to send out a packet.
static uint8_t	output (const linkaddr_t *localdest)
	Take an IP packet and format it to be sent on an 802.15.4 network using 6lowpan.
static void	input (void)
	Process a received 6lowpan packet.

Variables
General variables
static uint8_t *	packetbuf_ptr
	A pointer to the packetbuf buffer.
static uint8_t	packetbuf_hdr_len
	packetbuf_hdr_len is the total length of (the processed) 6lowpan headers (fragment headers, IPV6 or HC1, HC2, and HC1 and HC2 non compressed fields).
static int	packetbuf_payload_len
	The length of the payload in the Packetbuf buffer.
static uint8_t	uncomp_hdr_len
	uncomp_hdr_len is the length of the headers before compression (if HC2 is used this includes the UDP header in addition to the IP header).
static int	mac_max_payload
	mac_max_payload is the maimum payload space on the MAC frame.
static uint8_t	curr_page
	The current page (RFC 4944)
static int	last_tx_status
	the result of the last transmitted fragment
variables specific to RFC 6282
static uint8_t *	iphc_ptr
	Addresses contexts for IPHC.

Detailed Description

6LoWPAN implementation (RFC 4944 and RFC 6282)

Author

Adam Dunkels adam@.nosp@m.sics.nosp@m..se

Nicolas Tsiftes nvt@s.nosp@m.ics..nosp@m.se

Niclas Finne nfi@s.nosp@m.ics..nosp@m.se

Mathilde Durvy mdurv.nosp@m.y@ci.nosp@m.sco.c.nosp@m.om

Julien Abeille jabei.nosp@m.lle@.nosp@m.cisco.nosp@m..com

Joakim Eriksson joaki.nosp@m.me@s.nosp@m.ics.s.nosp@m.e

Joel Hoglund joel@.nosp@m.sics.nosp@m..se

Definition in file sicslowpan.c.