static int dhcp6_address_change(Link *link, struct in6_addr *ip6_addr,
uint8_t prefixlen, uint32_t lifetime_preferred,
uint32_t lifetime_valid) {
int r;
_cleanup_address_free_ Address *addr = NULL;
r = address_new(&addr);
if (r < 0)
return r;
addr->family = AF_INET6;
memcpy(&addr->in_addr.in6, ip6_addr, sizeof(*ip6_addr));
addr->flags = IFA_F_NOPREFIXROUTE;
addr->prefixlen = prefixlen;
addr->cinfo.ifa_prefered = lifetime_preferred;
addr->cinfo.ifa_valid = lifetime_valid;
log_link_info(link,
"DHCPv6 address "SD_ICMP6_ND_ADDRESS_FORMAT_STR"/%d timeout preferred %d valid %d",
SD_ICMP6_ND_ADDRESS_FORMAT_VAL(addr->in_addr.in6),
addr->prefixlen, lifetime_preferred, lifetime_valid);
r = address_configure(addr, link, dhcp6_address_handler, true);
if (r < 0)
log_link_warning_errno(link, r, "Could not assign DHCPv6 address: %m");
return r;
}
static int dhcp4_update_address(Link *link,
struct in_addr *address,
struct in_addr *netmask,
uint32_t lifetime) {
_cleanup_address_free_ Address *addr = NULL;
unsigned prefixlen;
int r;
assert(address);
assert(netmask);
assert(lifetime);
prefixlen = in_addr_netmask_to_prefixlen(netmask);
r = address_new(&addr);
if (r < 0)
return r;
addr->family = AF_INET;
addr->in_addr.in.s_addr = address->s_addr;
addr->cinfo.ifa_prefered = lifetime;
addr->cinfo.ifa_valid = lifetime;
addr->prefixlen = prefixlen;
addr->broadcast.s_addr = address->s_addr | ~netmask->s_addr;
/* allow reusing an existing address and simply update its lifetime
* in case it already exists */
r = address_configure(addr, link, dhcp4_address_handler, true);
if (r < 0)
return r;
return 0;
}
static int dhcp6_address_change(
Link *link,
struct in6_addr *ip6_addr,
uint32_t lifetime_preferred,
uint32_t lifetime_valid) {
_cleanup_address_free_ Address *addr = NULL;
char buffer[INET6_ADDRSTRLEN];
int r;
r = address_new(&addr);
if (r < 0)
return r;
addr->family = AF_INET6;
memcpy(&addr->in_addr.in6, ip6_addr, sizeof(*ip6_addr));
addr->flags = IFA_F_NOPREFIXROUTE;
addr->prefixlen = 128;
addr->cinfo.ifa_prefered = lifetime_preferred;
addr->cinfo.ifa_valid = lifetime_valid;
log_link_info(link,
"DHCPv6 address %s/%d timeout preferred %d valid %d",
inet_ntop(AF_INET6, &addr->in_addr.in6, buffer, sizeof(buffer)),
addr->prefixlen, lifetime_preferred, lifetime_valid);
r = address_configure(addr, link, dhcp6_address_handler, true);
if (r < 0)
log_link_warning_errno(link, r, "Could not assign DHCPv6 address: %m");
return r;
}
static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
_cleanup_address_free_ Address *ll_addr = NULL;
_cleanup_route_free_ Route *route = NULL;
struct in_addr address;
int r;
assert(ll);
assert(link);
r = sd_ipv4ll_get_address(ll, &address);
if (r == -ENOENT)
return 0;
else if (r < 0)
return r;
log_link_debug(link, "IPv4 link-local claim %u.%u.%u.%u",
ADDRESS_FMT_VAL(address));
r = address_new(&ll_addr);
if (r < 0)
return r;
ll_addr->family = AF_INET;
ll_addr->in_addr.in = address;
ll_addr->prefixlen = 16;
ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htonl(0xfffffffflu >> ll_addr->prefixlen);
ll_addr->scope = RT_SCOPE_LINK;
r = address_configure(ll_addr, link, ipv4ll_address_handler, false);
if (r < 0)
return r;
link->ipv4ll_address = false;
r = route_new(&route);
if (r < 0)
return r;
route->family = AF_INET;
route->scope = RT_SCOPE_LINK;
route->protocol = RTPROT_STATIC;
route->priority = IPV4LL_ROUTE_METRIC;
r = route_configure(route, link, ipv4ll_route_handler);
if (r < 0)
return r;
link->ipv4ll_route = false;
return 0;
}
static void ndisc_router_process_autonomous_prefix(Link *link, sd_ndisc_router *rt) {
_cleanup_address_free_ Address *address = NULL;
uint32_t lifetime_valid, lifetime_preferred;
unsigned prefixlen;
int r;
assert(link);
assert(rt);
r = sd_ndisc_router_prefix_get_prefixlen(rt, &prefixlen);
if (r < 0) {
log_link_error_errno(link, r, "Failed to get prefix length: %m");
return;
}
r = sd_ndisc_router_prefix_get_valid_lifetime(rt, &lifetime_valid);
if (r < 0) {
log_link_error_errno(link, r, "Failed to get prefix valid lifetime: %m");
return;
}
r = sd_ndisc_router_prefix_get_preferred_lifetime(rt, &lifetime_preferred);
if (r < 0) {
log_link_error_errno(link, r, "Failed to get prefix preferred lifetime: %m");
return;
}
r = address_new(&address);
if (r < 0) {
log_link_error_errno(link, r, "Could not allocate address: %m");
return;
}
address->family = AF_INET6;
r = sd_ndisc_router_prefix_get_address(rt, &address->in_addr.in6);
if (r < 0) {
log_link_error_errno(link, r, "Failed to get prefix address: %m");
return;
}
if (in_addr_is_null(AF_INET6, (const union in_addr_union *) &link->network->ipv6_token) == 0)
memcpy(((char *)&address->in_addr.in6) + 8, ((char *)&link->network->ipv6_token) + 8, 8);
else {
/* see RFC4291 section 2.5.1 */
address->in_addr.in6.s6_addr[8] = link->mac.ether_addr_octet[0];
address->in_addr.in6.s6_addr[8] ^= 1 << 1;
address->in_addr.in6.s6_addr[9] = link->mac.ether_addr_octet[1];
address->in_addr.in6.s6_addr[10] = link->mac.ether_addr_octet[2];
address->in_addr.in6.s6_addr[11] = 0xff;
address->in_addr.in6.s6_addr[12] = 0xfe;
address->in_addr.in6.s6_addr[13] = link->mac.ether_addr_octet[3];
address->in_addr.in6.s6_addr[14] = link->mac.ether_addr_octet[4];
address->in_addr.in6.s6_addr[15] = link->mac.ether_addr_octet[5];
}
address->prefixlen = prefixlen;
address->flags = IFA_F_NOPREFIXROUTE|IFA_F_MANAGETEMPADDR;
address->cinfo.ifa_prefered = lifetime_preferred;
address->cinfo.ifa_valid = lifetime_valid;
r = address_configure(address, link, ndisc_netlink_handler, true);
if (r < 0) {
log_link_warning_errno(link, r, "Could not set SLAAC address: %m");
link_enter_failed(link);
return;
}
link->ndisc_messages++;
}