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This commit is contained in:
Niclas Finne 2011-12-02 17:07:27 +01:00
parent 23a280e5eb
commit 077eba80e1
1 changed files with 34 additions and 59 deletions
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85
core/net/tcpip.c
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@ -27,10 +27,8 @@
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*
* $Id: tcpip.c,v 1.30 2010/10/29 05:36:07 adamdunkels Exp $
*/
/**
* \file
* Code for tunnelling uIP packets over the Rime mesh routing module
@ -39,29 +37,20 @@
* \author Mathilde Durvy <mdurvy@cisco.com> (IPv6 related code)
* \author Julien Abeille <jabeille@cisco.com> (IPv6 related code)
*/
#include "contiki-net.h"
#include "net/uip-split.h"
#include "net/uip-packetqueue.h"
#include <string.h>
#if UIP_CONF_IPV6
#include "net/uip-nd6.h"
#include "net/uip-ds6.h"
#endif
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
#define PRINT6ADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((u8_t *)addr)[0], ((u8_t *)addr)[1], ((u8_t *)addr)[2], ((u8_t *)addr)[3], ((u8_t *)addr)[4], ((u8_t *)addr)[5], ((u8_t *)addr)[6], ((u8_t *)addr)[7], ((u8_t *)addr)[8], ((u8_t *)addr)[9], ((u8_t *)addr)[10], ((u8_t *)addr)[11], ((u8_t *)addr)[12], ((u8_t *)addr)[13], ((u8_t *)addr)[14], ((u8_t *)addr)[15])
#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",lladdr->addr[0], lladdr->addr[1], lladdr->addr[2], lladdr->addr[3],lladdr->addr[4], lladdr->addr[5])
#else
#define PRINTF(...)
#define PRINT6ADDR(addr)
#endif
#include <string.h>
#define DEBUG DEBUG_NONE
#include "net/uip-debug.h"
#if UIP_LOGGING
#include <stdio.h>
@ -88,11 +77,11 @@ process_event_t tcpip_event;
process_event_t tcpip_icmp6_event;
#endif /* UIP_CONF_ICMP6 */
/*periodic check of active connections*/
/* Periodic check of active connections. */
static struct etimer periodic;
#if UIP_CONF_IPV6 && UIP_CONF_IPV6_REASSEMBLY
/*timer for reassembly*/
/* Timer for reassembly. */
extern struct etimer uip_reass_timer;
#endif
@ -412,21 +401,19 @@ eventhandler(process_event_t ev, process_data_t data)
cptr->appstate.p = PROCESS_NONE;
cptr->tcpstateflags = UIP_CLOSED;
}
}
}
#endif /* UIP_TCP */
#if UIP_UDP
{
register struct uip_udp_conn *cptr;
for(cptr = &uip_udp_conns[0];
cptr < &uip_udp_conns[UIP_UDP_CONNS]; ++cptr) {
if(cptr->appstate.p == p) {
cptr->lport = 0;
}
}
}
#endif /* UIP_UDP */
break;
@ -551,7 +538,7 @@ void
tcpip_ipv6_output(void)
{
uip_ds6_nbr_t *nbr = NULL;
uip_ipaddr_t* nexthop;
uip_ipaddr_t *nexthop;
if(uip_len == 0) {
return;
@ -562,11 +549,13 @@ tcpip_ipv6_output(void)
uip_len = 0;
return;
}
if(uip_is_addr_unspecified(&UIP_IP_BUF->destipaddr)){
UIP_LOG("tcpip_ipv6_output: Destination address unspecified");
uip_len = 0;
return;
}
if(!uip_is_addr_mcast(&UIP_IP_BUF->destipaddr)) {
/* Next hop determination */
nbr = NULL;
@ -583,14 +572,13 @@ tcpip_ipv6_output(void)
if(uip_ext_len > 0) {
uint8_t proto = *((uint8_t *)UIP_IP_BUF + 40);
remove_ext_hdr();
/* this should be copied from the ext header... */
/* This should be copied from the ext header... */
UIP_IP_BUF->proto = proto;
}
UIP_FALLBACK_INTERFACE.output();
#else
PRINTF("tcpip_ipv6_output: Destination off-link but no route\n");
#endif
#endif /* !UIP_FALLBACK_INTERFACE */
uip_len = 0;
return;
}
@ -598,7 +586,7 @@ tcpip_ipv6_output(void)
nexthop = &locrt->nexthop;
}
}
/* end of next hop determination */
/* End of next hop determination */
#if UIP_CONF_IPV6_RPL
if(rpl_update_header_final(nexthop)) {
uip_len = 0;
@ -611,7 +599,7 @@ tcpip_ipv6_output(void)
return;
} else {
#if UIP_CONF_IPV6_QUEUE_PKT
/* copy outgoing pkt in the queuing buffer for later transmmit */
/* Copy outgoing pkt in the queuing buffer for later transmit. */
if(uip_packetqueue_alloc(&nbr->packethandle, UIP_DS6_NBR_PACKET_LIFETIME) != NULL) {
memcpy(uip_packetqueue_buf(&nbr->packethandle), UIP_IP_BUF, uip_len);
uip_packetqueue_set_buflen(&nbr->packethandle, uip_len);
@ -629,59 +617,47 @@ tcpip_ipv6_output(void)
uip_nd6_ns_output(NULL, NULL, &nbr->ipaddr);
}
stimer_set(&(nbr->sendns), uip_ds6_if.retrans_timer / 1000);
stimer_set(&nbr->sendns, uip_ds6_if.retrans_timer / 1000);
nbr->nscount = 1;
}
} else {
if(nbr->state == NBR_INCOMPLETE) {
PRINTF("tcpip_ipv6_output: nbr cache entry incomplete\n");
#if UIP_CONF_IPV6_QUEUE_PKT
/* copy outgoing pkt in the queuing buffer for later transmmit and set
the destination nbr to nbr */
/* Copy outgoing pkt in the queuing buffer for later transmit and set
the destination nbr to nbr. */
if(uip_packetqueue_alloc(&nbr->packethandle, UIP_DS6_NBR_PACKET_LIFETIME) != NULL) {
memcpy(uip_packetqueue_buf(&nbr->packethandle), UIP_IP_BUF, uip_len);
uip_packetqueue_set_buflen(&nbr->packethandle, uip_len);
}
/* memcpy(nbr->queue_buf, UIP_IP_BUF, uip_len);
nbr->queue_buf_len = uip_len;*/
uip_len = 0;
#endif /*UIP_CONF_IPV6_QUEUE_PKT*/
return;
}
/* if running NUD (nbc->state == STALE, DELAY, or PROBE ) keep
sending in parallel see rfc 4861 Node behavior in section 7.7.3*/
/* Send in parallel if we are running NUD (nbc state is either STALE,
DELAY, or PROBE). See RFC 4861, section 7.7.3 on node behavior. */
if(nbr->state == NBR_STALE) {
nbr->state = NBR_DELAY;
stimer_set(&(nbr->reachable),
UIP_ND6_DELAY_FIRST_PROBE_TIME);
stimer_set(&nbr->reachable, UIP_ND6_DELAY_FIRST_PROBE_TIME);
nbr->nscount = 0;
PRINTF("tcpip_ipv6_output: nbr cache entry stale moving to delay\n");
}
stimer_set(&(nbr->sendns),
uip_ds6_if.retrans_timer / 1000);
tcpip_output(&(nbr->lladdr));
stimer_set(&nbr->sendns, uip_ds6_if.retrans_timer / 1000);
tcpip_output(&nbr->lladdr);
#if UIP_CONF_IPV6_QUEUE_PKT
/* Send the queued packets from here, may not be 100% perfect though.
/*
* Send the queued packets from here, may not be 100% perfect though.
* This happens in a few cases, for example when instead of receiving a
* NA after sendiong a NS, you receive a NS with SLLAO: the entry moves
*to STALE, and you must both send a NA and the queued packet
* to STALE, and you must both send a NA and the queued packet.
*/
/* if(nbr->queue_buf_len != 0) {
uip_len = nbr->queue_buf_len;
memcpy(UIP_IP_BUF, nbr->queue_buf, uip_len);
nbr->queue_buf_len = 0;
tcpip_output(&(nbr->lladdr));
}*/
if(uip_packetqueue_buflen(&nbr->packethandle) != 0) {
uip_len = uip_packetqueue_buflen(&nbr->packethandle);
memcpy(UIP_IP_BUF, uip_packetqueue_buf(&nbr->packethandle), uip_len);
uip_packetqueue_free(&nbr->packethandle);
tcpip_output(&(nbr->lladdr));
tcpip_output(&nbr->lladdr);
}
#endif /*UIP_CONF_IPV6_QUEUE_PKT*/
@ -690,13 +666,12 @@ tcpip_ipv6_output(void)
}
}
/*multicast IP destination address */
/* Multicast IP destination address. */
tcpip_output(NULL);
uip_len = 0;
uip_ext_len = 0;
}
#endif
#endif /* UIP_CONF_IPV6 */
/*---------------------------------------------------------------------------*/
#if UIP_UDP
void