STATIC const uint8_t *
find_source_link_address(ptrlist_t * options_p, int * ret_len)
{
int count;
int i;
count = ptrlist_count(options_p);
*ret_len = 0;
for (i = 0; i < count; i++) {
const struct _nd_opt_linkaddr * opt;
opt = (const struct _nd_opt_linkaddr *)ptrlist_element(options_p, i);
if (opt->nd_opt_linkaddr_type == ND_OPT_SOURCE_LINKADDR) {
int opt_len = opt->nd_opt_linkaddr_len * ND_OPT_ALIGN;
if (opt_len < (_ND_OPT_LINKADDR_HDR_SIZE + ETHER_ADDR_LEN)) {
/* invalid option */
break;
}
*ret_len = opt_len - _ND_OPT_LINKADDR_HDR_SIZE;
return (opt->nd_opt_linkaddr_data);
}
}
return (NULL);
}
STATIC const struct in6_addr *
find_rdnss(ptrlist_t * options_p, int * how_many)
{
int count;
int i;
count = ptrlist_count(options_p);
*how_many = 0;
for (i = 0; i < count; i++) {
const struct nd_opt_rdnss * opt;
opt = (const struct nd_opt_rdnss *)ptrlist_element(options_p, i);
if (opt->nd_opt_rdnss_type == ND_OPT_RDNSS) {
int opt_len = opt->nd_opt_rdnss_len * ND_OPT_ALIGN;
if (opt_len < ND_OPT_RDNSS_MIN_LENGTH) {
/* invalid option */
break;
}
if (opt->nd_opt_rdnss_lifetime == 0) {
/* skip it */
continue;
}
*how_many = (opt_len - ND_OPT_RDNSS_HEADER_LENGTH)
/ sizeof(struct in6_addr);
return (opt->nd_opt_rdnss_addr);
}
}
return (NULL);
}
__private_extern__ int
ptrlist_index(ptrlist_t * list, void * element)
{
int i;
for (i = 0; i < ptrlist_count(list); i++) {
if (ptrlist_element(list, i) == element)
return (i);
}
return (-1);
}
STATIC void
print_nd_options(ptrlist_t * options_p)
{
int count;
int i;
count = ptrlist_count(options_p);
printf("There are %d options\n", count);
for (i = 0; i < count; i++) {
const struct nd_opt_hdr * opt;
const char * opt_name;
opt = (const struct nd_opt_hdr *)ptrlist_element(options_p, i);
opt_name = S_nd_opt_name(opt->nd_opt_type);
printf("%s (%d) length %d\n", opt_name, opt->nd_opt_type,
opt->nd_opt_len * ND_OPT_ALIGN);
}
return;
}
void *
dhcpol_element(dhcpol_t * list, int i)
{
return (ptrlist_element((ptrlist_t *)list, i));
}