C++ UIP_LOG函数代码示例

/*---------------------------------------------------------------------------*/
void
uip_netif_sched_dad(struct uip_netif_addr *ifaddr)
{    
  if(ifaddr->state != TENTATIVE){
    UIP_LOG("DAD called with non tentative address");
    return;
  }
  /*
   * check dad is not running
   */
  if(dad_ifaddr != NULL){
    UIP_LOG("DAD already running");
    return;
  }
  /*
   * Set the interface address that is going through DAD
   */
  dad_ifaddr = ifaddr;

  PRINTF("Scheduling DAD for ipaddr:");
  PRINT6ADDR(&dad_ifaddr->ipaddr);
  PRINTF("\n");

  etimer_set(&uip_netif_timer_dad, random_rand()%(UIP_ND6_MAX_RTR_SOLICITATION_DELAY * CLOCK_SECOND)); 
}

/*---------------------------------------------------------------------------*/
void
uip_netif_addr_add(uip_ipaddr_t *ipaddr, u8_t length, unsigned long vlifetime, uip_netif_type type) {
  
  /* check prefix has the right length if we are doing autoconf */
  if((type == AUTOCONF) && (length != UIP_DEFAULT_PREFIX_LEN)) {
    UIP_LOG("Error: UNSUPPORTED PREFIX LENGTH");
    return;
  }
  
  /* check if addr does not already exist and find a free entry */
  for(i = 0; i < UIP_CONF_NETIF_MAX_ADDRESSES; ++i) {
    if(uip_netif_physical_if.addresses[i].state == NOT_USED){
      /*
       * Copying address
       * If we are doing autoconf, ipaddr is a prefix, we copy the 128 bits
       * of it, then overwrite the last 64 bits with the interface ID at 
       * next if statement.
       * Otherwise ipaddr is an address, we just copy it
       */
      uip_ipaddr_copy(&uip_netif_physical_if.addresses[i].ipaddr, ipaddr);
      if(type == AUTOCONF) {
        /* construct address from prefix and layer2 id */
        uip_netif_addr_autoconf_set(&uip_netif_physical_if.addresses[i].ipaddr, &uip_lladdr);
      } 
      /* setting state, type */
      uip_netif_physical_if.addresses[i].state = TENTATIVE;
      uip_netif_physical_if.addresses[i].type = type;
      /* setting lifetime timer if lieftime is not infinite */
      if(vlifetime != 0) {
        stimer_set(&(uip_netif_physical_if.addresses[i].vlifetime), vlifetime);
        uip_netif_physical_if.addresses[i].is_infinite = 0;
      } else {
        uip_netif_physical_if.addresses[i].is_infinite = 1;
      }
      PRINTF("Created new address");
      PRINT6ADDR(&uip_netif_physical_if.addresses[i].ipaddr);
      PRINTF("for interface\n");
   
      /* schedule DAD */
      uip_netif_sched_dad(&uip_netif_physical_if.addresses[i]);
      
      return;
    }
  }
 
  /* If we did not find space, log */ 
  UIP_LOG("ADDRESS LIST FULL");
  return;
}

static s8_t tcpip_accept_func(void *arg,struct uip_tcp_pcb *newpcb,s8_t err)
{
	s32_t s;
	struct tcpip_sock *ptr,*newsock = NULL;
	struct tcpip_sock *sock = (struct tcpip_sock*)arg;

	UIP_LOG("tcpip_accept_func()");
	if(!sock) return UIP_ERR_ABRT;

	s = tcpip_allocsocket(newpcb);
	if(s<0) {
		uip_tcp_close(newpcb);
		return UIP_ERR_ABRT;
	}

	newsock = tcpip_getsocket(s);
	newsock->pcb->flags |= UIP_TF_NODELAY;

	ptr = tcpip_accepted_sockets;
	while(ptr && ptr->next) ptr = ptr->next;
	if(!ptr) tcpip_accepted_sockets = newsock;
	else ptr->next = newsock;

	uip_tcp_arg(newpcb,newsock);
	uip_tcp_recv(newpcb,tcpip_recved);
	uip_tcp_sent(newpcb,tcpip_sent);
	uip_tcp_err(newpcb,tcpip_err);
	uip_tcp_poll(newpcb,tcpip_poll,4);

	return UIP_ERR_OK;
}

void
tcpip_input(void)
{
  if(inputfunc != NULL) {
    inputfunc();
  }
  UIP_LOG("tcpip_input: Use tcpip_set_inputfunc() to set an input function");
}

/*---------------------------------------------------------------------------*/
void
uip_netif_dad_failed(uip_ipaddr_t *ipaddr)
{

  UIP_LOG("DAD FAILED");
  UIP_LOG("THE STACK IS GOING TO SHUT DOWN");
  UIP_LOG("THE HOST WILL BE UNREACHABLE");
  
  if(uip_ipaddr_cmp(&dad_ifaddr->ipaddr, ipaddr)){
    etimer_stop(&uip_netif_timer_dad);
    dad_ifaddr->state = NOT_USED;
    dad_ifaddr = NULL;
    dad_ns = 0;
  }
  
  exit(-1);
}

uint8_t
tcpip_output(void)
{
    if(outputfunc != NULL) {
        return outputfunc();
    }
    UIP_LOG("tcpip_output: Use tcpip_set_outputfunc() to set an output function");
    return 0;
}

uint8_t
tcpip_output(struct net_buf *buf, const uip_lladdr_t *a)
{
  if(outputfunc != NULL) {
    return outputfunc(buf, a);
  }
  UIP_LOG("tcpip_output: Use tcpip_set_outputfunc() to set an output function");
  return 0;
}

u8_t
tcpip_output(uip_lladdr_t *a)
{
  if(outputfunc != NULL) {
    return outputfunc(a);
  }
  UIP_LOG("tcpip_output: Use tcpip_set_outputfunc() to set an output function");
  return 0;
}

uint8_t
tcpip_output(const uip_lladdr_t *a)
{
  int ret;
  if(outputfunc != NULL) {
    ret = outputfunc(a);
    return ret;
  }
  UIP_LOG("tcpip_output: Use tcpip_set_outputfunc() to set an output function");
  return 0;
}

/*---------------------------------------------------------------------------*/
void
uip_netif_addr_autoconf_set(uip_ipaddr_t *ipaddr, uip_lladdr_t *lladdr)
{
  /* We consider only links with IEEE EUI-64 identifier or
     IEEE 48-bit MAC addresses */
#if (UIP_LLADDR_LEN == 8)
  memcpy(ipaddr->u8 + 8, lladdr, UIP_LLADDR_LEN);
  ipaddr->u8[8] ^= 0x02;  
#elif (UIP_LLADDR_LEN == 6)
  memcpy(ipaddr->u8 + 8, lladdr, 3);
  ipaddr->u8[11] = 0xff;
  ipaddr->u8[12] = 0xfe;
  memcpy(ipaddr->u8 + 13, (u8_t*)lladdr + 3, 3);
  ipaddr->u8[8] ^= 0x02;
#else
  UIP_LOG("CAN NOT BUIL INTERFACE IDENTIFIER");
  UIP_LOG("THE STACK IS GOING TO SHUT DOWN");
  UIP_LOG("THE HOST WILL BE UNREACHABLE");
  exit(-1);
#endif
}

uint8_t
tcpip_output(const uip_lladdr_t *a)
{
	PRINTF("TCP IP OUTPUT.\n");
  int ret;
  if(outputfunc != NULL) {
    ret = outputfunc(a);
    return ret;
  }
  PRINTF("TCP IP OUTPUT. NO Func\n");
  UIP_LOG("tcpip_output: Use tcpip_set_outputfunc() to set an output function");
  return 0;
}

s8_t uip_ipinput(struct uip_pbuf *p,struct uip_netif *inp)
{
	u16_t iphdr_len;
	struct uip_ip_hdr *iphdr;
	struct uip_netif *netif;

	iphdr = p->payload;
	if(UIP_IPH_V(iphdr)!=4) {
		UIP_ERROR("uip_ipinput: ip packet dropped due to bad version number.\n");
		uip_pbuf_free(p);
		return 0;
	}

	iphdr_len = UIP_IPH_HL(iphdr);
	iphdr_len *= 4;

	if(iphdr_len>p->len) {
		UIP_ERROR("uip_ipinput: ip packet dropped due to too small packet size.\n");
		uip_pbuf_free(p);
		return 0;
	}

	if(uip_ipchksum(iphdr,iphdr_len)!=0) {
	    UIP_STAT(++uip_stat.ip.drop);
	    UIP_STAT(++uip_stat.ip.chkerr);
		UIP_ERROR("uip_ipinput: bad checksum.\n");
		uip_pbuf_free(p);
		return 0;
	}

	uip_pbuf_realloc(p,ntohs(UIP_IPH_LEN(iphdr)));

	for(netif=uip_netif_list;netif!=NULL;netif=netif->next) {
		if(uip_netif_isup(netif) && !ip_addr_isany(&netif->ip_addr)) {
			if(ip_addr_cmp(&iphdr->dst,&netif->ip_addr) ||
				ip_addr_isbroadcast(&iphdr->dst,netif)) break;
		}
	}

	if(!netif) {
		UIP_ERROR("uip_ipinput: no route found.\n");
		uip_pbuf_free(p);
		return 0;
	}

	if((UIP_IPH_OFFSET(iphdr)&htons(UIP_IP_OFFMASK|UIP_IP_MF))!=0) {
#if UIP_IP_REASSEMBLY
		p = uip_ipreass(p);
		if(p==NULL) return UIP_ERR_OK;

		iphdr = (struct uip_ip_hdr*)p->payload;
#else
		uip_pbuf_free(p);
	    UIP_STAT(++uip_stat.ip.drop);
		UIP_ERROR("ip: fragment dropped.\n");
		return 0;
#endif
	}

	switch(UIP_IPH_PROTO(iphdr)) {
		case UIP_PROTO_TCP:
			uip_tcpinput(p,inp);
			break;
		case UIP_PROTO_ICMP:
			uip_icmpinput(p,inp);
			break;
		default:
			UIP_LOG("uip_ipinput: Unsupported protocol.\n");
			if(!ip_addr_isbroadcast(&(iphdr->dst),inp)
				&& !ip_addr_ismulticast(&(iphdr->dst))) {
				p->payload = iphdr;
				uip_icmp_destunreach(p,UIP_ICMP_DUR_PROTO);
			}
			uip_pbuf_free(p);
			break;
	}
	return 0;
}

void
tcpip_ipv6_output(void)
{
  uip_ds6_nbr_t *nbr = NULL;
  uip_ipaddr_t* nexthop;
  
  if(uip_len == 0) {
    return;
  }
  
  if(uip_len > UIP_LINK_MTU) {
    UIP_LOG("tcpip_ipv6_output: Packet to big");
    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;
    if(uip_ds6_is_addr_onlink(&UIP_IP_BUF->destipaddr)){
      nexthop = &UIP_IP_BUF->destipaddr;
    } else {
      uip_ds6_route_t* locrt;
      locrt = uip_ds6_route_lookup(&UIP_IP_BUF->destipaddr);
      if(locrt == NULL) {
        if((nexthop = uip_ds6_defrt_choose()) == NULL) {
#ifdef UIP_FALLBACK_INTERFACE
	  UIP_FALLBACK_INTERFACE.output();
#else
          PRINTF("tcpip_ipv6_output: Destination off-link but no route\n");
#endif
          uip_len = 0;
          return;
        }
      } else {
        nexthop = &locrt->nexthop;
      }
    }
    /* end of next hop determination */
   // if((nbr = uip_ds6_nbr_lookup(nexthop)) == NULL) {
	if(0){
	/* 
	 * I-D.ietf.6lowpan-nd 5.7: As all prefixes but the link-local prefix are
	 * always assumed to be off-link, multicast-based address resolution between
	 * neighbors is not needed.
	 * In addition, there are neither INCOMPLETE, STALE, DELAY, nor PROBE NCEs 
	 * in 6LoWPAN-ND.
	 */	
		return;
    } else {
    	tcpip_output(&(nbr->lladdr));
      uip_len = 0;
      return;
    }
  }
   
  /*multicast IP destination address */
  tcpip_output(NULL);
  uip_len = 0;
  uip_ext_len = 0;
   
}

void
tcpip_ipv6_output(void)
{
  uip_ds6_nbr_t *nbr = NULL;
  uip_ipaddr_t *nexthop;

  if(uip_len == 0) {
    return;
  }

  if(uip_len > UIP_LINK_MTU) {
    UIP_LOG("tcpip_ipv6_output: Packet to big");
    uip_clear_buf();
    return;
  }

  if(uip_is_addr_unspecified(&UIP_IP_BUF->destipaddr)){
    UIP_LOG("tcpip_ipv6_output: Destination address unspecified");
    uip_clear_buf();
    return;
  }

  if(!uip_is_addr_mcast(&UIP_IP_BUF->destipaddr)) {
    /* Next hop determination */
    nbr = NULL;

    /* We first check if the destination address is on our immediate
       link. If so, we simply use the destination address as our
       nexthop address. */
    if(uip_ds6_is_addr_onlink(&UIP_IP_BUF->destipaddr)){
      nexthop = &UIP_IP_BUF->destipaddr;
    } else {
      uip_ds6_route_t *route;
      /* Check if we have a route to the destination address. */
      route = uip_ds6_route_lookup(&UIP_IP_BUF->destipaddr);

      /* No route was found - we send to the default route instead. */
      if(route == NULL) {
        PRINTF("tcpip_ipv6_output: no route found, using default route\n");
        nexthop = uip_ds6_defrt_choose();
        if(nexthop == NULL) {
#ifdef UIP_FALLBACK_INTERFACE
	  PRINTF("FALLBACK: removing ext hdrs & setting proto %d %d\n", 
		 uip_ext_len, *((uint8_t *)UIP_IP_BUF + 40));
	  if(uip_ext_len > 0) {
	    extern void remove_ext_hdr(void);
	    uint8_t proto = *((uint8_t *)UIP_IP_BUF + 40);
	    remove_ext_hdr();
	    /* This should be copied from the ext header... */
	    UIP_IP_BUF->proto = proto;
	  }
	  /* Inform the other end that the destination is not reachable. If it's
	   * not informed routes might get lost unexpectedly until there's a need
	   * to send a new packet to the peer */
	  if(UIP_FALLBACK_INTERFACE.output() < 0) {
	    PRINTF("FALLBACK: output error. Reporting DST UNREACH\n");
	    uip_icmp6_error_output(ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR, 0);
	    uip_flags = 0;
	    tcpip_ipv6_output();
	    return;
	  }
#else
          PRINTF("tcpip_ipv6_output: Destination off-link but no route\n");
#endif /* !UIP_FALLBACK_INTERFACE */
          uip_clear_buf();
          return;
        }

      } else {
        /* A route was found, so we look up the nexthop neighbor for
           the route. */
        nexthop = uip_ds6_route_nexthop(route);

        /* If the nexthop is dead, for example because the neighbor
           never responded to link-layer acks, we drop its route. */
        if(nexthop == NULL) {
#if UIP_CONF_IPV6_RPL
          /* If we are running RPL, and if we are the root of the
             network, we'll trigger a global repair berfore we remove
             the route. */
          rpl_dag_t *dag;
          rpl_instance_t *instance;

          dag = (rpl_dag_t *)route->state.dag;
          if(dag != NULL) {
            instance = dag->instance;

            rpl_repair_root(instance->instance_id);
          }
#endif /* UIP_CONF_IPV6_RPL */
          uip_ds6_route_rm(route);

          /* We don't have a nexthop to send the packet to, so we drop
             it. */
          return;
        }
      }
#if TCPIP_CONF_ANNOTATE_TRANSMISSIONS
      if(nexthop != NULL) {
        static uint8_t annotate_last;
//.........这里部分代码省略.........

void
tcpip_ipv6_output(void)
{
  struct uip_nd6_neighbor *nbc = NULL;
  struct uip_nd6_defrouter *dr = NULL;
  
  if(uip_len == 0)
    return;

  if(uip_len > UIP_LINK_MTU){
    UIP_LOG("tcpip_ipv6_output: Packet to big");
    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)) {
    /*If destination is on link */
    nbc = NULL;
    if(uip_nd6_is_addr_onlink(&UIP_IP_BUF->destipaddr)){
      nbc = uip_nd6_nbrcache_lookup(&UIP_IP_BUF->destipaddr);
    } else {
#if UIP_CONF_ROUTER
      /*destination is not on link*/
      uip_ipaddr_t ipaddr;
      uip_ipaddr_t *next_hop;

      /* Try to find the next hop address in the local routing table. */
      next_hop = uip_router != NULL ?
        uip_router->lookup(&UIP_IP_BUF->destipaddr, &ipaddr) : NULL;
      if(next_hop != NULL) {
        /* Look for the next hop of the route in the neighbor cache.
           Add a cache entry if we can't find it. */
        nbc = uip_nd6_nbrcache_lookup(next_hop);
        if(nbc == NULL) {
          nbc = uip_nd6_nbrcache_add(next_hop, NULL, 1, NO_STATE);
        }
      } else {
#endif /* UIP_CONF_ROUTER */
        /* No route found, check if a default router exists and use it then. */
        dr = uip_nd6_choose_defrouter();
        if(dr != NULL){
          nbc = dr->nb;
        } else {
          /* shall we send a icmp error message destination unreachable ?*/
          UIP_LOG("tcpip_ipv6_output: Destination off-link but no router");
          uip_len = 0;
          return;
        }
#if UIP_CONF_ROUTER
      }
#endif /* UIP_CONF_ROUTER */
    }
    /* there are two cases where the entry logically does not exist:
     * 1 it really does not exist. 2 it is in the NO_STATE state */
    if (nbc == NULL || nbc->state == NO_STATE) {
      if (nbc == NULL) {
        /* create neighbor cache entry, original packet is replaced by NS*/
        nbc = uip_nd6_nbrcache_add(&UIP_IP_BUF->destipaddr, NULL, 0, INCOMPLETE);
      } else {
        nbc->state = INCOMPLETE;
      }
#if UIP_CONF_IPV6_QUEUE_PKT
      /* copy outgoing pkt in the queuing buffer for later transmmit */
      memcpy(nbc->queue_buf, UIP_IP_BUF, uip_len);
      nbc->queue_buf_len = uip_len;
#endif
      /* RFC4861, 7.2.2:
       * "If the source address of the packet prompting the solicitation is the
       * same as one of the addresses assigned to the outgoing interface, that
       * address SHOULD be placed in the IP Source Address of the outgoing
       * solicitation.  Otherwise, any one of the addresses assigned to the
       * interface should be used."*/
      if(uip_netif_is_addr_my_unicast(&UIP_IP_BUF->srcipaddr)){
        uip_nd6_io_ns_output(&UIP_IP_BUF->srcipaddr, NULL, &nbc->ipaddr);
      } else {
        uip_nd6_io_ns_output(NULL, NULL, &nbc->ipaddr);
      }

      stimer_set(&(nbc->last_send),
                uip_netif_physical_if.retrans_timer / 1000);
      nbc->count_send = 1;
    } else {
      if (nbc->state == INCOMPLETE){
        PRINTF("tcpip_ipv6_output: neighbor cache entry incomplete\n");
#if UIP_CONF_IPV6_QUEUE_PKT
        /* copy outgoing pkt in the queuing buffer for later transmmit and set
           the destination neighbor to nbc */
        memcpy(nbc->queue_buf, UIP_IP_BUF, uip_len);
        nbc->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*/
	 
//.........这里部分代码省略.........