interface-ip: Remove table specific nw rules for IPv4/6 addresses

[project/netifd.git] / interface-ip.c

diff --git a/interface-ip.c b/interface-ip.c
index 7f8a451..c4514b0 100644 (file)
--- a/interface-ip.c
+++ b/interface-ip.c
@@ -490,11 +490,17 @@ interface_update_proto_addr(struct vlist_tree *tree,
                if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
                    !a_new->broadcast) {
 
-                       uint32_t mask = ~0;
-                       uint32_t *a = (uint32_t *) &a_new->addr;
-
-                       mask >>= a_new->mask;
-                       a_new->broadcast = *a | htonl(mask);
+                       /* /31 and /32 addressing need 255.255.255.255
+                        * as broadcast address. */
+                       if (a_new->mask >= 31) {
+                               a_new->broadcast = (uint32_t) ~0;
+                       } else {
+                               uint32_t mask = ~0;
+                               uint32_t *a = (uint32_t *) &a_new->addr;
+
+                               mask >>= a_new->mask;
+                               a_new->broadcast = *a | htonl(mask);
+                       }
                }
        }
 
@@ -517,26 +523,22 @@ interface_update_proto_addr(struct vlist_tree *tree,
        }
 
        if (node_old) {
-               if (!(a_old->flags & DEVADDR_EXTERNAL) && a_old->enabled && !keep) {
-                       interface_handle_subnet_route(iface, a_old, false);
-
+               if (a_old->enabled && !keep) {
                        if ((a_old->flags & DEVADDR_FAMILY) == DEVADDR_INET6)
                                v6 = true;
 
-                       unsigned int table = (v6) ? iface->ip6table : iface->ip4table;
-
                        //This is needed for source routing to work correctly. If a device
                        //has two connections to a network using the same subnet, adding
                        //only the network-rule will cause packets to be routed through the
                        //first matching network (source IP matches both masks).
-                       if (table) {
+                       if (a_old->policy_table)
                                set_ip_source_policy(false, v6, IPRULE_PRIORITY_ADDR, &a_old->addr,
-                                               (v6) ? 128 : 32, table, NULL, NULL);
-                               set_ip_source_policy(false, v6, IPRULE_PRIORITY_NW, &a_old->addr,
-                                               a_old->mask, table, NULL, NULL);
-                       }
+                                               (v6) ? 128 : 32, a_old->policy_table, NULL, NULL);
 
-                       system_del_address(dev, a_old);
+                       if (!(a_old->flags & DEVADDR_EXTERNAL)) {
+                               interface_handle_subnet_route(iface, a_old, false);
+                               system_del_address(dev, a_old);
+                       }
                }
                free(a_old->pclass);
                free(a_old);
@@ -544,26 +546,26 @@ interface_update_proto_addr(struct vlist_tree *tree,
 
        if (node_new) {
                a_new->enabled = true;
-               if (!(a_new->flags & DEVADDR_EXTERNAL) && (!keep || replace)) {
-                       if (system_add_address(dev, a_new))
-                               a_new->failed = true;
 
-                       if (!keep) {
-                               if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET6)
-                                       v6 = true;
+               if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET6)
+                               v6 = true;
 
-                               unsigned int table = (v6) ? iface->ip6table : iface->ip4table;
+               a_new->policy_table = (v6) ? iface->ip6table : iface->ip4table;
 
-                               if (table) {
-                                       set_ip_source_policy(true, v6, IPRULE_PRIORITY_ADDR, &a_new->addr,
-                                                       (v6) ? 128 : 32, table, NULL, NULL);
-                                       set_ip_source_policy(true, v6, IPRULE_PRIORITY_NW, &a_new->addr,
-                                                       a_new->mask, table, NULL, NULL);
-                               }
+               if (!keep || replace) {
+                       if (!(a_new->flags & DEVADDR_EXTERNAL)) {
+                               if (system_add_address(dev, a_new))
+                                       a_new->failed = true;
+
+                               if (iface->metric)
+                                       interface_handle_subnet_route(iface, a_new, true);
                        }
 
-                       if (iface->metric)
-                               interface_handle_subnet_route(iface, a_new, true);
+                       if (!keep) {
+                               if (a_new->policy_table)
+                                       set_ip_source_policy(true, v6, IPRULE_PRIORITY_ADDR, &a_new->addr,
+                                                       (v6) ? 128 : 32, a_new->policy_table, NULL, NULL);
+                       }
                }
        }
 }
@@ -601,7 +603,7 @@ interface_update_proto_route(struct vlist_tree *tree,
        if (node_old && node_new)
                keep = !memcmp(&route_old->nexthop, &route_new->nexthop, sizeof(route_old->nexthop)) &&
                        (route_old->mtu == route_new->mtu) && (route_old->type == route_new->type) &&
-                       (route_old->valid_until == route_new->valid_until) && !route_old->failed;
+                       !route_old->failed;
 
        if (node_old) {
                if (!(route_old->flags & DEVADDR_EXTERNAL) && route_old->enabled && !keep)
@@ -1217,6 +1219,8 @@ void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled)
                return;
 
        vlist_for_each_element(&ip->addr, addr, node) {
+               bool v6 = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET6) ? true : false;
+
                if (addr->enabled == enabled)
                        continue;
 
@@ -1224,9 +1228,18 @@ void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled)
                        system_add_address(dev, addr);
                        if (iface->metric)
                                interface_handle_subnet_route(iface, addr, true);
+
+                       addr->policy_table = (v6) ? iface->ip6table : iface->ip4table;
+                       if (addr->policy_table)
+                               set_ip_source_policy(true, v6, IPRULE_PRIORITY_ADDR, &addr->addr,
+                                               (v6) ? 128 : 32, addr->policy_table, NULL, NULL);
                } else {
                        interface_handle_subnet_route(iface, addr, false);
                        system_del_address(dev, addr);
+
+                       if (addr->policy_table)
+                               set_ip_source_policy(false, v6, IPRULE_PRIORITY_ADDR, &addr->addr,
+                                               (v6) ? 128 : 32, addr->policy_table, NULL, NULL);
                }
                addr->enabled = enabled;
        }
@@ -1244,6 +1257,15 @@ void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled)
                        if (!(route->flags & DEVROUTE_METRIC))
                                route->metric = ip->iface->metric;
 
+                       if (!(route->flags & DEVROUTE_TABLE)) {
+                               route->flags &= ~DEVROUTE_SRCTABLE;
+                               route->table = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET6) ?
+                                                       iface->ip6table : iface->ip4table;
+
+                               if (route->table)
+                                       route->flags |= DEVROUTE_SRCTABLE;
+                       }
+
                        if (system_add_route(dev, route))
                                route->failed = true;
                } else