static void test_prefixes_cb(sd_icmp6_nd *nd, int event, void *userdata) {
sd_event *e = userdata;
struct {
struct in6_addr addr;
uint8_t prefixlen;
bool success;
} addrs[] = {
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } },
63, true },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0x0d, 0xad,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } },
64, false },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0x0b, 0x16, 0xd0, 0x0d,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } },
60, true },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0x00, 0x9d, 0xab, 0xcd,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } },
64, true },
{ { { { 0x20, 0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xed,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 } } },
63, false },
};
uint8_t prefixlen;
unsigned int i;
for (i = 0; i < ELEMENTSOF(addrs); i++) {
printf(" %s prefix %02x%02x:%02x%02x:%02x%02x:%02x%02x",
__FUNCTION__,
addrs[i].addr.s6_addr[0], addrs[i].addr.s6_addr[1],
addrs[i].addr.s6_addr[2], addrs[i].addr.s6_addr[3],
addrs[i].addr.s6_addr[4], addrs[i].addr.s6_addr[5],
addrs[i].addr.s6_addr[6], addrs[i].addr.s6_addr[7]);
if (addrs[i].success) {
assert_se(sd_icmp6_ra_get_prefixlen(nd, &addrs[i].addr,
&prefixlen) >= 0);
assert_se(addrs[i].prefixlen == prefixlen);
printf("/%d onlink\n", prefixlen);
} else {
assert_se(sd_icmp6_ra_get_prefixlen(nd, &addrs[i].addr,
&prefixlen) == -EADDRNOTAVAIL);
printf("/128 offlink\n");
}
}
send_ra_function = send_ra_short_prefix;
assert_se(sd_icmp6_nd_set_callback(nd, test_short_prefix_cb, e) >= 0);
assert_se(sd_icmp6_nd_stop(nd) >= 0);
assert_se(sd_icmp6_router_solicitation_start(nd) >= 0);
}
static int dhcp6_lease_address_acquired(sd_dhcp6_client *client, Link *link) {
int r;
sd_dhcp6_lease *lease;
struct in6_addr ip6_addr;
uint32_t lifetime_preferred, lifetime_valid;
uint8_t prefixlen;
r = sd_dhcp6_client_get_lease(client, &lease);
if (r < 0)
return r;
sd_dhcp6_lease_reset_address_iter(lease);
while (sd_dhcp6_lease_get_address(lease, &ip6_addr,
&lifetime_preferred,
&lifetime_valid) >= 0) {
r = sd_icmp6_ra_get_prefixlen(link->icmp6_router_discovery,
&ip6_addr, &prefixlen);
if (r < 0 && r != -EADDRNOTAVAIL) {
log_link_warning_errno(link, r, "Could not get prefix information: %m");
return r;
}
if (r == -EADDRNOTAVAIL)
prefixlen = 128;
r = dhcp6_address_change(link, &ip6_addr, prefixlen,
lifetime_preferred, lifetime_valid);
if (r < 0)
return r;
}
return 0;
}