C++ (Cpp) sin6_masklen Examples

Example #1

File: rt_socket.c Project: Quagga/people-jcollie

/* Interface between zebra message and rtm message. */
static int
kernel_rtm_ipv6 (int message, struct prefix_ipv6 *dest,
		 struct in6_addr *gate, int index, int flags)
{
  struct sockaddr_in6 *mask;
  struct sockaddr_in6 sin_dest, sin_mask, sin_gate;

  memset (&sin_dest, 0, sizeof (struct sockaddr_in6));
  sin_dest.sin6_family = AF_INET6;
#ifdef SIN6_LEN
  sin_dest.sin6_len = sizeof (struct sockaddr_in6);
#endif /* SIN6_LEN */

  memset (&sin_mask, 0, sizeof (struct sockaddr_in6));

  memset (&sin_gate, 0, sizeof (struct sockaddr_in6));
  sin_gate.sin6_family = AF_INET6;
#ifdef SIN6_LEN
  sin_gate.sin6_len = sizeof (struct sockaddr_in6);
#endif /* SIN6_LEN */

  sin_dest.sin6_addr = dest->prefix;

  if (gate)
    memcpy (&sin_gate.sin6_addr, gate, sizeof (struct in6_addr));

  /* Under kame set interface index to link local address. */
#ifdef KAME

#define SET_IN6_LINKLOCAL_IFINDEX(a, i) \
  do { \
    (a).s6_addr[2] = ((i) >> 8) & 0xff; \
    (a).s6_addr[3] = (i) & 0xff; \
  } while (0)

  if (gate && IN6_IS_ADDR_LINKLOCAL(gate))
    SET_IN6_LINKLOCAL_IFINDEX (sin_gate.sin6_addr, index);
#endif /* KAME */

  if (gate && dest->prefixlen == 128)
    mask = NULL;
  else
    {
      masklen2ip6 (dest->prefixlen, &sin_mask.sin6_addr);
      sin_mask.sin6_family = AF_INET6;
#ifdef SIN6_LEN
      sin_mask.sin6_len = sin6_masklen (sin_mask.sin6_addr);
#endif /* SIN6_LEN */
      mask = &sin_mask;
    }

  return rtm_write (message, 
		    (union sockunion *) &sin_dest,
		    (union sockunion *) mask,
		    gate ? (union sockunion *)&sin_gate : NULL,
		    index,
		    flags,
		    0);
}

Example #2

File: rt_socket.c Project: yubo/quagga

/* Interface between zebra message and rtm message. */
static int
kernel_rtm_ipv6_multipath(int cmd, struct prefix *p, struct rib *rib,
			  int family)
{
	struct sockaddr_in6 *mask;
	struct sockaddr_in6 sin_dest, sin_mask, sin_gate;
	struct nexthop *nexthop, *tnexthop;
	int recursing;
	int nexthop_num = 0;
	unsigned int ifindex = 0;
	int gate = 0;
	int error;

	memset(&sin_dest, 0, sizeof(struct sockaddr_in6));
	sin_dest.sin6_family = AF_INET6;
#ifdef SIN6_LEN
	sin_dest.sin6_len = sizeof(struct sockaddr_in6);
#endif /* SIN6_LEN */
	sin_dest.sin6_addr = p->u.prefix6;

	memset(&sin_mask, 0, sizeof(struct sockaddr_in6));

	memset(&sin_gate, 0, sizeof(struct sockaddr_in6));
	sin_gate.sin6_family = AF_INET6;
#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
	sin_gate.sin6_len = sizeof(struct sockaddr_in6);
#endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */

	/* Make gateway. */
	for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing)) {
		if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
			continue;

		gate = 0;

		if ((cmd == RTM_ADD
		     && CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ACTIVE))
		    || (cmd == RTM_DELETE
#if 0
			&& CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB)
#endif
		    )) {
			if (nexthop->type == NEXTHOP_TYPE_IPV6
			    || nexthop->type == NEXTHOP_TYPE_IPV6_IFNAME
			    || nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX) {
				sin_gate.sin6_addr = nexthop->gate.ipv6;
				gate = 1;
			}
			if (nexthop->type == NEXTHOP_TYPE_IFINDEX
			    || nexthop->type == NEXTHOP_TYPE_IFNAME
			    || nexthop->type == NEXTHOP_TYPE_IPV6_IFNAME
			    || nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX)
				ifindex = nexthop->ifindex;

			if (cmd == RTM_ADD)
				SET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB);
		}

		/* Under kame set interface index to link local address. */
#ifdef KAME

#define SET_IN6_LINKLOCAL_IFINDEX(a, i) \
      do { \
	(a).s6_addr[2] = ((i) >> 8) & 0xff; \
	(a).s6_addr[3] = (i) & 0xff; \
      } while (0)

		if (gate && IN6_IS_ADDR_LINKLOCAL(&sin_gate.sin6_addr))
			SET_IN6_LINKLOCAL_IFINDEX(sin_gate.sin6_addr, ifindex);
#endif /* KAME */

		if (gate && p->prefixlen == 128)
			mask = NULL;
		else {
			masklen2ip6(p->prefixlen, &sin_mask.sin6_addr);
			sin_mask.sin6_family = AF_INET6;
#ifdef SIN6_LEN
			sin_mask.sin6_len = sin6_masklen(sin_mask.sin6_addr);
#endif /* SIN6_LEN */
			mask = &sin_mask;
		}

		error = rtm_write(cmd,
				  (union sockunion *)&sin_dest,
				  (union sockunion *)mask,
				  gate ? (union sockunion *)&sin_gate : NULL,
				  ifindex, rib->flags, rib->metric);

#if 0
		if (error) {
			zlog_info
			    ("kernel_rtm_ipv6_multipath(): nexthop %d add error=%d.",
			     nexthop_num, error);
		}
#endif

		nexthop_num++;
	}

	/* If there is no useful nexthop then return. */
	if (nexthop_num == 0) {
		if (IS_ZEBRA_DEBUG_KERNEL)
			zlog_debug
			    ("kernel_rtm_ipv6_multipath(): No useful nexthop.");
		return 0;
	}

	return 0;
 /*XXX*/}