void
ipv6ns_probeaddr(void *arg)
{
struct ipv6_addr *ap = arg;
#ifdef IPV6_SEND_DAD
struct nd_neighbor_solicit *ns;
struct nd_opt_hdr *nd;
struct sockaddr_in6 dst;
struct cmsghdr *cm;
struct in6_pktinfo pi;
int hoplimit = HOPLIMIT;
#else
#ifdef LISTEN_DAD
struct timeval tv, rtv;
struct timeval mtv;
int i;
#endif
#endif
if (ap->dadcallback &&
((ap->flags & IPV6_AF_NEW) == 0 ||
ap->nsprobes >= ap->iface->options->dadtransmits))
{
#ifdef IPV6_SEND_DAD
ap->dadcallback(ap);
#else
ipv6_addaddr(ap);
#endif
return;
}
if (ipv6ns_open() == -1)
return;
ap->flags &= ~IPV6_AF_DADCOMPLETED;
#ifdef IPV6_SEND_DAD
if (!ap->ns) {
ap->nslen = sizeof(*ns) + ROUNDUP8(ap->iface->hwlen + 2);
ap->ns = calloc(1, ap->nslen);
if (ap->ns == NULL) {
syslog(LOG_ERR, "%s: %m", __func__);
return;
}
ns = (struct nd_neighbor_solicit *)(void *)ap->ns;
ns->nd_ns_type = ND_NEIGHBOR_SOLICIT;
//ns->nd_ns_cksum = 0;
//ns->nd_ns_code = 0;
//ns->nd_ns_reserved = 0;
ns->nd_ns_target = ap->addr;
nd = (struct nd_opt_hdr *)(ap->ns + sizeof(*ns));
nd->nd_opt_type = ND_OPT_SOURCE_LINKADDR;
nd->nd_opt_len = (ROUNDUP8(ap->iface->hwlen + 2)) >> 3;
memcpy(nd + 1, ap->iface->hwaddr, ap->iface->hwlen);
}
int
lladdropt_length(struct sockaddr_dl *sdl)
{
switch(sdl->sdl_type) {
case IFT_ETHER:
return(ROUNDUP8(ETHER_ADDR_LEN + 2));
default:
return(0);
}
}
void
lladdropt_fill(struct sockaddr_dl *sdl, struct nd_opt_hdr *ndopt)
{
char *addr;
ndopt->nd_opt_type = ND_OPT_SOURCE_LINKADDR; /* fixed */
switch (sdl->sdl_type) {
case IFT_ETHER:
ndopt->nd_opt_len = (ROUNDUP8(ETHER_ADDR_LEN + 2)) >> 3;
addr = (char *)(ndopt + 1);
memcpy(addr, LLADDR(sdl), ETHER_ADDR_LEN);
break;
default:
warnmsg(LOG_ERR, __func__,
"unsupported link type(%d)", sdl->sdl_type);
exit(1);
}
}
