tcpip.c File Reference

    Code for tunnelling uIP packets over the Rime mesh routing module

Author

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

Mathilde Durvy mdurv.nosp@m.y@ci.nosp@m.sco.c.nosp@m.om (IPv6 related code)

Julien Abeille jabei.nosp@m.lle@.nosp@m.cisco.nosp@m..com (IPv6 related code)

#include "contiki-net.h"
#include "net/ip/uip.h"
#include "net/ip/uip-split.h"
#include "net/ip/uip-packetqueue.h"
#include "net/ipv6/uip-nd6.h"
#include "net/ipv6/uip-ds6.h"
#include <string.h>
#include "net/ip/uip-debug.h"
#include "rpl/rpl.h"
#include "rpl/rpl-private.h"

Data Structures
struct	internal_state
struct	listenport

Macros
#define	_DEBUG_   DEBUG_NONE
#define	TCP_SYN   0x02
#define	UIP_ICMP_BUF   ((struct uip_icmp_hdr *)&uip_buf[UIP_LLIPH_LEN + uip_ext_len])
#define	UIP_IP_BUF   ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
#define	UIP_LOG(m)
#define	UIP_TCP_BUF   ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])

Enumerations
enum	{   TCP_POLL,   UDP_POLL,   PACKET_INPUT }

Functions
static void	check_for_tcp_syn (void)
static void	eventhandler (process_event_t ev, process_data_t data)
uint8_t	icmp6_new (void *appstate)
	register an ICMPv6 callback More...
static void	packet_input (void)
	PROCESS (tcpip_process,"TCP/IP stack")
	PROCESS_THREAD (tcpip_process, ev, data)
static void	start_periodic_tcp_timer (void)
void	tcp_attach (struct uip_conn *conn, void *appstate)
	Attach a TCP connection to the current process. More...
struct uip_conn *	tcp_connect (uip_ipaddr_t *ripaddr, uint16_t port, void *appstate)
	Open a TCP connection to the specified IP address and port. More...
void	tcp_listen (uint16_t port)
	Open a TCP port. More...
void	tcp_unlisten (uint16_t port)
	Close a listening TCP port. More...
void	tcpip_icmp6_call (uint8_t type)
	This function is called at reception of an ICMPv6 packet If an application registered as an ICMPv6 listener (with icmp6_new), it will be called through a process_post_synch() More...
void	tcpip_input (void)
	Deliver an incoming packet to the TCP/IP stack. More...
void	tcpip_ipv6_output (void)
	This function does address resolution and then calls tcpip_output. More...
uint8_t	tcpip_output (const uip_lladdr_t *a)
	Output packet to layer 2 The eventual parameter is the MAC address of the destination. More...
void	tcpip_poll_tcp (struct uip_conn *conn)
	Cause a specified TCP connection to be polled. More...
void	tcpip_poll_udp (struct uip_udp_conn *conn)
	Cause a specified UDP connection to be polled. More...
void	tcpip_set_outputfunc (uint8_t(*f)(const uip_lladdr_t *))
void	tcpip_uipcall (void)
void	udp_attach (struct uip_udp_conn *conn, void *appstate)
	Attach the current process to a UDP connection. More...
struct uip_udp_conn *	udp_broadcast_new (uint16_t port, void *appstate)
	Create a new UDP broadcast connection. More...
struct uip_udp_conn *	udp_new (const uip_ipaddr_t *ripaddr, uint16_t port, void *appstate)
	Create a new UDP connection. More...

Variables
static uint8_t(*	outputfunc )(const uip_lladdr_t *a)
static struct etimer	periodic
static struct internal_state	s
process_event_t	tcpip_event
	The uIP event. More...
process_event_t	tcpip_icmp6_event
	The ICMP6 event. More...

#define _DEBUG_   DEBUG_NONE

#define TCP_SYN   0x02

Referenced by check_for_tcp_syn().

#define UIP_ICMP_BUF   ((struct uip_icmp_hdr *)&uip_buf[UIP_LLIPH_LEN + uip_ext_len])

#define UIP_IP_BUF   ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])

Referenced by check_for_tcp_syn(), and tcpip_ipv6_output().

#define UIP_LOG

(

m

)

Referenced by tcpip_ipv6_output(), and tcpip_output().

#define UIP_TCP_BUF   ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])

Referenced by check_for_tcp_syn().

anonymous enum

Enumerator
TCP_POLL
UDP_POLL
PACKET_INPUT

static void check_for_tcp_syn ( void  )

static

References start_periodic_tcp_timer(), TCP_SYN, UIP_IP_BUF, UIP_PROTO_TCP, and UIP_TCP_BUF.

Referenced by packet_input().

static void eventhandler ( process_event_t  ev, process_data_t  data  )

static

References uip_conn::appstate, uip_udp_conn::appstate, etimer_expired(), etimer_restart(), i, internal_state::listenports, uip_udp_conn::lport, NULL, tcpip_uipstate::p, listenport::p, PACKET_INPUT, packet_input(), periodic, listenport::port, PRINTF, PROCESS_EVENT_EXITED, PROCESS_EVENT_TIMER, PROCESS_NONE, s, start_periodic_tcp_timer(), TCP_POLL, tcpip_ipv6_output(), tcpip_output(), uip_conn::tcpstateflags, UDP_POLL, UIP_CLOSED, uip_conn_active, uip_conns, UIP_CONNS, uip_ds6_periodic(), uip_ds6_timer_periodic, uip_fw_periodic(), uip_len, UIP_LISTENPORTS, uip_periodic, uip_poll_conn, uip_reass_over(), uip_udp_conns, UIP_UDP_CONNS, uip_udp_periodic_conn, and uip_unlisten().

Referenced by PROCESS_THREAD().

static void packet_input ( void  )

static

References check_for_tcp_syn(), PRINTF, tcpip_ipv6_output(), tcpip_output(), uip_fw_forward(), UIP_FW_LOCAL, uip_input, uip_len, and uip_split_output().

Referenced by eventhandler().

PROCESS	(	tcpip_process	,
		"TCP/IP stack"
	)

PROCESS_THREAD	(	tcpip_process	,
		ev	,
		data
	)

References CLOCK_SECOND, etimer_set(), eventhandler(), i, internal_state::listenports, internal_state::p, periodic, listenport::port, process_alloc_event(), PROCESS_BEGIN, PROCESS_CURRENT, PROCESS_END, PROCESS_YIELD, rpl_init(), s, tcpip_event, tcpip_icmp6_event, uip_init(), and UIP_LISTENPORTS.

static void start_periodic_tcp_timer ( void  )

static

References etimer_expired(), etimer_restart(), and periodic.

Referenced by check_for_tcp_syn(), eventhandler(), and tcpip_uipcall().

uint8_t(* outputfunc)(const uip_lladdr_t *a)

static

Referenced by tcpip_output(), and tcpip_set_outputfunc().

struct etimer periodic

static

Referenced by eventhandler(), PROCESS_THREAD(), and start_periodic_tcp_timer().

struct internal_state s

static

Referenced by eventhandler(), PROCESS_THREAD(), tcp_attach(), tcp_listen(), tcp_unlisten(), tcpip_uipcall(), udp_attach(), and udp_new().