return (add) ? system_add_iprule(&rule) : system_del_iprule(&rule);
}
-static int set_ip_lo_policy(bool add, bool v6, struct interface *iface)
-{
- struct iprule rule = {
- .flags = IPRULE_IN | IPRULE_LOOKUP | IPRULE_PRIORITY,
- .priority = IPRULE_PRIORITY_NW + iface->l3_dev.dev->ifindex,
- .lookup = (v6) ? iface->ip6table : iface->ip4table,
- .in_dev = "lo"
- };
-
- if (!rule.lookup)
- return 0;
-
- rule.flags |= (v6) ? IPRULE_INET6 : IPRULE_INET4;
-
- return (add) ? system_add_iprule(&rule) : system_del_iprule(&rule);
-}
-
static bool
__find_ip_addr_target(struct interface_ip_settings *ip, union if_addr *a, bool v6)
{
struct device *dev = iface->l3_dev.dev;
struct device_route route;
+ if (addr->flags & DEVADDR_OFFLINK)
+ return;
+
memset(&route, 0, sizeof(route));
route.iface = iface;
route.flags = addr->flags;
route.flags |= DEVADDR_KERNEL;
system_del_route(dev, &route);
- if (!(addr->flags & DEVADDR_OFFLINK)) {
- route.flags &= ~DEVADDR_KERNEL;
- route.metric = iface->metric;
- system_add_route(dev, &route);
- }
+ route.flags &= ~DEVADDR_KERNEL;
+ route.metric = iface->metric;
+ system_add_route(dev, &route);
} else {
- if (!(addr->flags & DEVADDR_OFFLINK))
- system_del_route(dev, &route);
+ system_del_route(dev, &route);
}
}
}
}
- if ((a_new->flags & DEVADDR_OFFLINK) || iface->metric)
+ if (iface->metric)
interface_handle_subnet_route(iface, a_new, true);
}
}
}
}
+static void
+random_ifaceid(struct in6_addr *addr)
+{
+ static bool initialized = false;
+ struct timeval t;
+
+ if (!initialized) {
+ long int seed = 0;
+ gettimeofday(&t, NULL);
+ seed = t.tv_sec ^ t.tv_usec ^ getpid();
+ srand48(seed);
+ initialized = true;
+ }
+ addr->s6_addr32[2] = (uint32_t)mrand48();
+ addr->s6_addr32[3] = (uint32_t)mrand48();
+}
+
+static void
+eui64_ifaceid(struct interface *iface, struct in6_addr *addr)
+{
+ /* get mac address */
+ uint8_t *macaddr = iface->l3_dev.dev->settings.macaddr;
+ uint8_t *ifaceid = addr->s6_addr + 8;
+ memcpy(ifaceid,macaddr,3);
+ memcpy(ifaceid + 5,macaddr + 3, 3);
+ ifaceid[3] = 0xff;
+ ifaceid[4] = 0xfe;
+ ifaceid[0] ^= 0x02;
+}
+
+static void
+generate_ifaceid(struct interface *iface, struct in6_addr *addr)
+{
+ /* generate new iface id */
+ switch (iface->assignment_iface_id_selection) {
+ case IFID_FIXED:
+ /* fixed */
+ /* copy host part from assignment_fixed_iface_id */
+ memcpy(addr->s6_addr + 8, iface->assignment_fixed_iface_id.s6_addr + 8, 8);
+ break;
+ case IFID_RANDOM:
+ /* randomize last 64 bits */
+ random_ifaceid(addr);
+ break;
+ case IFID_EUI64:
+ /* eui64 */
+ eui64_ifaceid(iface, addr);
+ break;
+ }
+}
static void
interface_set_prefix_address(struct device_prefix_assignment *assignment,
struct device *l3_downlink = iface->l3_dev.dev;
struct device_addr addr;
+ struct device_route route;
memset(&addr, 0, sizeof(addr));
- addr.addr.in6 = prefix->addr;
- addr.addr.in6.s6_addr32[1] |= htonl(assignment->assigned);
- addr.addr.in6.s6_addr[15] += 1;
+ memset(&route, 0, sizeof(route));
+
+ if (IN6_IS_ADDR_UNSPECIFIED(&assignment->addr)) {
+ addr.addr.in6 = prefix->addr;
+ addr.addr.in6.s6_addr32[1] |= htonl(assignment->assigned);
+ generate_ifaceid(iface, &addr.addr.in6);
+ assignment->addr = addr.addr.in6;
+ }
+ else
+ addr.addr.in6 = assignment->addr;
+
addr.mask = assignment->length;
- addr.flags = DEVADDR_INET6;
+ addr.flags = DEVADDR_INET6 | DEVADDR_OFFLINK;
addr.preferred_until = prefix->preferred_until;
addr.valid_until = prefix->valid_until;
- if (addr.mask < 64) {
- addr.mask = 64;
- system_del_address(l3_downlink, &addr);
- addr.mask = assignment->length;
- }
+ route.flags = DEVADDR_INET6;
+ route.mask = addr.mask < 64 ? 64 : addr.mask;
+ route.addr = addr.addr;
+ clear_if_addr(&route.addr, route.mask);
if (!add && assignment->enabled) {
time_t now = system_get_rtime();
if (!addr.valid_until || addr.valid_until - now > 7200)
addr.valid_until = now + 7200;
- system_del_address(l3_downlink, &addr); // Work around dangling prefix routes
-
if (prefix->iface) {
if (prefix->iface->ip6table)
set_ip_source_policy(false, true, IPRULE_PRIORITY_NW, &addr.addr,
addr.mask, 0, iface, "unreachable");
}
- if (addr.mask < 64)
- addr.mask = 64;
-
- interface_handle_subnet_route(iface, &addr, false);
+ system_del_route(l3_downlink, &route);
system_add_address(l3_downlink, &addr);
assignment->enabled = false;
} else if (add && (iface->state == IFS_UP || iface->state == IFS_SETUP) &&
!system_add_address(l3_downlink, &addr)) {
- interface_handle_subnet_route(iface, &addr, false);
if (prefix->iface && !assignment->enabled) {
set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT, &addr.addr,
addr.mask, prefix->iface->ip6table, iface, NULL);
}
- if (addr.mask < 64)
- addr.mask = 64;
+ route.metric = iface->metric;
+ system_add_route(l3_downlink, &route);
- interface_handle_subnet_route(iface, &addr, true);
+ if (uplink && uplink->l3_dev.dev && !(l3_downlink->settings.flags & DEV_OPT_MTU6)) {
+ int mtu = system_update_ipv6_mtu(uplink->l3_dev.dev, 0);
+ int mtu_old = system_update_ipv6_mtu(l3_downlink, 0);
- if (uplink && uplink->l3_dev.dev) {
- int mtu = system_update_ipv6_mtu(
- uplink->l3_dev.dev, 0);
- if (mtu > 0)
+ if (mtu > 0 && mtu_old > mtu)
system_update_ipv6_mtu(l3_downlink, mtu);
}
c->assigned = 1 << (64 - prefix->length);
c->length = 64;
c->name[0] = 0;
+ c->addr = in6addr_any;
list_add(&c->head, &prefix->assignments);
// Excluded prefix
c->assigned = ntohl(prefix->excl_addr.s6_addr32[1]) &
((1 << (64 - prefix->length)) - 1);
c->length = prefix->excl_length;
+ c->addr = in6addr_any;
memcpy(c->name, name, sizeof(name));
list_add(&c->head, &prefix->assignments);
}
c = malloc(sizeof(*c) + namelen);
c->length = iface->assignment_length;
c->assigned = iface->assignment_hint;
+ c->addr = in6addr_any;
c->enabled = false;
memcpy(c->name, iface->name, namelen);
struct device_addr *addr;
struct device_route *route;
struct device *dev;
+ struct interface *iface;
ip->enabled = enabled;
- dev = ip->iface->l3_dev.dev;
+ iface = ip->iface;
+ dev = iface->l3_dev.dev;
if (!dev)
return;
if (addr->enabled == enabled)
continue;
- if (enabled)
+ if (enabled) {
system_add_address(dev, addr);
- else
+ if (iface->metric)
+ interface_handle_subnet_route(iface, addr, true);
+ } else {
+ interface_handle_subnet_route(iface, addr, false);
system_del_address(dev, addr);
+ }
addr->enabled = enabled;
}
if (!strcmp(a->name, ip->iface->name))
interface_set_prefix_address(a, c, ip->iface, enabled);
- if (ip->iface && ip->iface->l3_dev.dev) {
- set_ip_lo_policy(enabled, true, ip->iface);
- set_ip_lo_policy(enabled, false, ip->iface);
-
+ if (ip->iface && ip->iface->l3_dev.dev)
set_ip_source_policy(enabled, true, IPRULE_PRIORITY_REJECT + ip->iface->l3_dev.dev->ifindex,
NULL, 0, 0, ip->iface, "failed_policy");
- }
}
void
projects / project / netifd.git / blobdiff