bridge: fix config reload on 32 bit systems
[project/netifd.git] / bridge.c
index ae305e869703ac018f30a69beb0db59dacdad185..dbeea469160c039393b45863c1067dc215925876 100644 (file)
--- a/bridge.c
+++ b/bridge.c
@@ -131,6 +131,8 @@ struct bridge_member {
        struct bridge_state *bst;
        struct device_user dev;
        struct uloop_timeout check_timer;
+       struct device_vlan_range *extra_vlan;
+       int n_extra_vlan;
        uint16_t pvid;
        bool present;
        bool active;
@@ -206,7 +208,7 @@ __bridge_set_member_vlan(struct bridge_member *bm, struct bridge_vlan *vlan,
        if (bm->pvid == vlan->vid)
                flags |= BRVLAN_F_PVID;
 
-       system_bridge_vlan(port->ifname, vlan->vid, add, flags);
+       system_bridge_vlan(port->ifname, vlan->vid, -1, add, flags);
 }
 
 static void
@@ -233,7 +235,7 @@ bridge_set_local_vlan(struct bridge_state *bst, struct bridge_vlan *vlan, bool a
        if (!vlan->local && add)
                return;
 
-       system_bridge_vlan(bst->dev.ifname, vlan->vid, add, BRVLAN_F_SELF);
+       system_bridge_vlan(bst->dev.ifname, vlan->vid, -1, add, BRVLAN_F_SELF);
 }
 
 static void
@@ -349,23 +351,28 @@ static void bridge_stp_notify(struct bridge_state *bst)
 static int
 bridge_enable_interface(struct bridge_state *bst)
 {
-       int ret;
+       struct device *dev = &bst->dev;
+       int i, ret;
 
        if (bst->active)
                return 0;
 
        bridge_stp_notify(bst);
-       ret = system_bridge_addbr(&bst->dev, &bst->config);
+       ret = system_bridge_addbr(dev, &bst->config);
        if (ret < 0)
                return ret;
 
        if (bst->has_vlans) {
                /* delete default VLAN 1 */
-               system_bridge_vlan(bst->dev.ifname, 1, false, BRVLAN_F_SELF);
+               system_bridge_vlan(bst->dev.ifname, 1, -1, false, BRVLAN_F_SELF);
 
                bridge_set_local_vlans(bst, true);
        }
 
+       for (i = 0; i < dev->n_extra_vlan; i++)
+               system_bridge_vlan(dev->ifname, dev->extra_vlan[i].start,
+                                  dev->extra_vlan[i].end, true, BRVLAN_F_SELF);
+
        bst->active = true;
        return 0;
 }
@@ -394,6 +401,20 @@ bridge_disable_interface(struct bridge_state *bst)
        bst->active = false;
 }
 
+static void
+bridge_member_add_extra_vlans(struct bridge_member *bm)
+{
+       struct device *dev = bm->dev.dev;
+       int i;
+
+       for (i = 0; i < dev->n_extra_vlan; i++)
+               system_bridge_vlan(dev->ifname, dev->extra_vlan[i].start,
+                                  dev->extra_vlan[i].end, true, 0);
+       for (i = 0; i < bm->n_extra_vlan; i++)
+               system_bridge_vlan(dev->ifname, bm->extra_vlan[i].start,
+                                  bm->extra_vlan[i].end, true, 0);
+}
+
 static int
 bridge_enable_member(struct bridge_member *bm)
 {
@@ -435,8 +456,9 @@ bridge_enable_member(struct bridge_member *bm)
        bm->active = true;
        if (bst->has_vlans) {
                /* delete default VLAN 1 */
-               system_bridge_vlan(bm->dev.dev->ifname, 1, false, 0);
+               system_bridge_vlan(bm->dev.dev->ifname, 1, -1, false, 0);
 
+               bridge_member_add_extra_vlans(bm);
                vlist_for_each_element(&bst->dev.vlans, vlan, node)
                        bridge_set_member_vlan(bm, vlan, true);
        }
@@ -677,8 +699,8 @@ bridge_set_state(struct device *dev, bool up)
 }
 
 static struct bridge_member *
-bridge_create_member(struct bridge_state *bst, const char *name,
-                    struct device *dev, bool hotplug)
+bridge_alloc_member(struct bridge_state *bst, const char *name,
+                   struct device *dev, bool hotplug)
 {
        struct bridge_member *bm;
 
@@ -692,6 +714,15 @@ bridge_create_member(struct bridge_state *bst, const char *name,
        bm->check_timer.cb = bridge_member_check_cb;
        strcpy(bm->name, name);
        bm->dev.dev = dev;
+
+       return bm;
+}
+
+static void bridge_insert_member(struct bridge_member *bm, const char *name)
+{
+       struct bridge_state *bst = bm->bst;
+       bool hotplug = bm->dev.hotplug;
+
        vlist_add(&bst->members, &bm->node, bm->name);
        /*
         * Need to look up the bridge member again as the above
@@ -701,8 +732,17 @@ bridge_create_member(struct bridge_state *bst, const char *name,
        bm = vlist_find(&bst->members, name, bm, node);
        if (hotplug && bm)
                bm->node.version = -1;
+}
 
-       return bm;
+static void
+bridge_create_member(struct bridge_state *bst, const char *name,
+                    struct device *dev, bool hotplug)
+{
+       struct bridge_member *bm;
+
+       bm = bridge_alloc_member(bst, name, dev, hotplug);
+       if (bm)
+               bridge_insert_member(bm, name);
 }
 
 static void
@@ -746,12 +786,12 @@ bridge_add_member(struct bridge_state *bst, const char *name)
 }
 
 static struct bridge_vlan *
-bridge_hotplug_get_vlan(struct bridge_state *bst, uint16_t vid)
+bridge_hotplug_get_vlan(struct bridge_state *bst, uint16_t vid, bool create)
 {
        struct bridge_vlan *vlan;
 
        vlan = vlist_find(&bst->dev.vlans, &vid, vlan, node);
-       if (vlan)
+       if (vlan || !create)
                return vlan;
 
        vlan = calloc(1, sizeof(*vlan));
@@ -780,34 +820,43 @@ static void
 bridge_hotplug_set_member_vlans(struct bridge_state *bst, struct blob_attr *vlans,
                                const char *ifname, struct bridge_member *bm, bool add)
 {
+       struct device_vlan_range *r;
        struct bridge_vlan *vlan;
        struct blob_attr *cur;
-       int rem;
+       int n_vlans;
+       size_t rem;
 
        if (!vlans)
                return;
 
+       if (add) {
+               bm->n_extra_vlan = 0;
+               n_vlans = blobmsg_check_array(vlans, BLOBMSG_TYPE_STRING);
+               if (n_vlans < 1)
+                       return;
+
+               bm->extra_vlan = realloc(bm->extra_vlan, n_vlans * sizeof(*bm->extra_vlan));
+       }
+
        blobmsg_for_each_attr(cur, vlans, rem) {
                struct bridge_vlan_hotplug_port *port;
-               uint16_t flags = BRVLAN_F_UNTAGGED;
+               unsigned int vid, vid_end;
+               uint16_t flags = 0;
                char *name_buf;
-               unsigned int vid;
                char *end;
 
                if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
                        continue;
 
                vid = strtoul(blobmsg_get_string(cur), &end, 0);
+               vid_end = vid;
                if (!vid || vid > 4095)
                        continue;
 
-               vlan = bridge_hotplug_get_vlan(bst, vid);
-               if (!vlan)
-                       continue;
-
-               if (vlan->pending) {
-                       vlan->pending = false;
-                       bridge_set_vlan_state(bst, vlan, true);
+               if (*end == '-') {
+                       vid_end = strtoul(end + 1, &end, 0);
+                       if (vid_end < vid)
+                               continue;
                }
 
                if (end && *end) {
@@ -816,8 +865,8 @@ bridge_hotplug_set_member_vlans(struct bridge_state *bst, struct blob_attr *vlan
 
                        for (end++; *end; end++) {
                                switch (*end) {
-                               case 't':
-                                       flags &= ~BRVLAN_F_UNTAGGED;
+                               case 'u':
+                                       flags |= BRVLAN_F_UNTAGGED;
                                        break;
                                case '*':
                                        flags |= BRVLAN_F_PVID;
@@ -826,6 +875,25 @@ bridge_hotplug_set_member_vlans(struct bridge_state *bst, struct blob_attr *vlan
                        }
                }
 
+               vlan = bridge_hotplug_get_vlan(bst, vid, !!flags);
+               if (!vlan || vid_end > vid) {
+                       if (add) {
+                               r = &bm->extra_vlan[bm->n_extra_vlan++];
+                               r->start = vid;
+                               r->end = vid_end;
+                               if (bm->active)
+                                       system_bridge_vlan(ifname, vid, vid_end, true, 0);
+                       } else if (bm->active) {
+                               system_bridge_vlan(ifname, vid, vid_end, false, 0);
+                       }
+                       continue;
+               }
+
+               if (vlan->pending) {
+                       vlan->pending = false;
+                       bridge_set_vlan_state(bst, vlan, true);
+               }
+
                port = bridge_hotplug_get_vlan_port(vlan, ifname);
                if (!add) {
                        if (!port)
@@ -867,11 +935,16 @@ bridge_hotplug_add(struct device *dev, struct device *member, struct blob_attr *
 {
        struct bridge_state *bst = container_of(dev, struct bridge_state, dev);
        struct bridge_member *bm;
+       bool new_entry = false;
 
        bm = vlist_find(&bst->members, member->ifname, bm, node);
+       if (!bm) {
+           new_entry = true;
+           bm = bridge_alloc_member(bst, member->ifname, member, true);
+       }
        bridge_hotplug_set_member_vlans(bst, vlan, member->ifname, bm, true);
-       if (!bm)
-               bridge_create_member(bst, member->ifname, member, true);
+       if (new_entry)
+               bridge_insert_member(bm, member->ifname);
 
        return 0;
 }
@@ -934,7 +1007,7 @@ bridge_dump_port(struct blob_buf *b, struct bridge_vlan_port *port)
        bool tagged = !(port->flags & BRVLAN_F_UNTAGGED);
        bool pvid = (port->flags & BRVLAN_F_PVID);
 
-       blobmsg_printf(b, NULL, "%s%s%s%s\n", port->ifname,
+       blobmsg_printf(b, NULL, "%s%s%s%s", port->ifname,
                tagged || pvid ? ":" : "",
                tagged ? "t" : "",
                pvid ? "*" : "");
@@ -968,12 +1041,15 @@ bridge_dump_vlan(struct blob_buf *b, struct bridge_vlan *vlan)
 static void
 bridge_dump_info(struct device *dev, struct blob_buf *b)
 {
+       struct bridge_config *cfg;
        struct bridge_state *bst;
        struct bridge_member *bm;
        struct bridge_vlan *vlan;
        void *list;
+       void *c;
 
        bst = container_of(dev, struct bridge_state, dev);
+       cfg = &bst->config;
 
        system_if_dump_info(dev, b);
        list = blobmsg_open_array(b, "bridge-members");
@@ -987,6 +1063,29 @@ bridge_dump_info(struct device *dev, struct blob_buf *b)
 
        blobmsg_close_array(b, list);
 
+       c = blobmsg_open_table(b, "bridge-attributes");
+
+       blobmsg_add_u8(b, "stp", cfg->stp);
+       blobmsg_add_u32(b, "forward_delay", cfg->forward_delay);
+       blobmsg_add_u32(b, "priority", cfg->priority);
+       blobmsg_add_u32(b, "ageing_time", cfg->ageing_time);
+       blobmsg_add_u32(b, "hello_time", cfg->hello_time);
+       blobmsg_add_u32(b, "max_age", cfg->max_age);
+       blobmsg_add_u8(b, "igmp_snooping", cfg->igmp_snoop);
+       blobmsg_add_u8(b, "bridge_empty", cfg->bridge_empty);
+       blobmsg_add_u8(b, "multicast_querier", cfg->multicast_querier);
+       blobmsg_add_u32(b, "hash_max", cfg->hash_max);
+       blobmsg_add_u32(b, "robustness", cfg->robustness);
+       blobmsg_add_u32(b, "query_interval", cfg->query_interval);
+       blobmsg_add_u32(b, "query_response_interval", cfg->query_response_interval);
+       blobmsg_add_u32(b, "last_member_interval", cfg->last_member_interval);
+       blobmsg_add_u8(b, "vlan_filtering", cfg->vlan_filtering);
+       blobmsg_add_u8(b, "stp_kernel", cfg->stp_kernel);
+       if (cfg->stp_proto)
+               blobmsg_add_string(b, "stp_proto", cfg->stp_proto);
+
+       blobmsg_close_table(b, c);
+
        if (avl_is_empty(&dev->vlans.avl))
                return;
 
@@ -1004,7 +1103,8 @@ bridge_config_init(struct device *dev)
        struct bridge_state *bst;
        struct bridge_vlan *vlan;
        struct blob_attr *cur;
-       int i, rem;
+       size_t rem;
+       int i;
 
        bst = container_of(dev, struct bridge_state, dev);
 
@@ -1122,11 +1222,11 @@ bridge_reload(struct device *dev, struct blob_attr *attr)
        struct blob_attr *tb_dev[__DEV_ATTR_MAX];
        struct blob_attr *tb_br[__BRIDGE_ATTR_MAX];
        enum dev_change_type ret = DEV_CONFIG_APPLIED;
-       unsigned long diff;
        struct bridge_state *bst;
+       unsigned long diff[2];
 
-       BUILD_BUG_ON(sizeof(diff) < __BRIDGE_ATTR_MAX / 8);
-       BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / 8);
+       BUILD_BUG_ON(sizeof(diff) < __BRIDGE_ATTR_MAX / BITS_PER_LONG);
+       BUILD_BUG_ON(sizeof(diff) < __DEV_ATTR_MAX / BITS_PER_LONG);
 
        bst = container_of(dev, struct bridge_state, dev);
        attr = blob_memdup(attr);
@@ -1150,18 +1250,24 @@ bridge_reload(struct device *dev, struct blob_attr *attr)
                blobmsg_parse(device_attr_list.params, __DEV_ATTR_MAX, otb_dev,
                        blob_data(bst->config_data), blob_len(bst->config_data));
 
-               diff = 0;
-               uci_blob_diff(tb_dev, otb_dev, &device_attr_list, &diff);
-               if (diff)
-                   ret = DEV_CONFIG_RESTART;
+               diff[0] = diff[1] = 0;
+               uci_blob_diff(tb_dev, otb_dev, &device_attr_list, diff);
+               if (diff[0] | diff[1]) {
+                       ret = DEV_CONFIG_RESTART;
+                       D(DEVICE, "Bridge %s device attributes have changed, diff=[%lx %lx]\n",
+                         dev->ifname, diff[1], diff[0]);
+               }
 
                blobmsg_parse(bridge_attrs, __BRIDGE_ATTR_MAX, otb_br,
                        blob_data(bst->config_data), blob_len(bst->config_data));
 
-               diff = 0;
-               uci_blob_diff(tb_br, otb_br, &bridge_attr_list, &diff);
-               if (diff & ~(1 << BRIDGE_ATTR_PORTS))
-                   ret = DEV_CONFIG_RESTART;
+               diff[0] = diff[1] = 0;
+               uci_blob_diff(tb_br, otb_br, &bridge_attr_list, diff);
+               if (diff[0] & ~(1 << BRIDGE_ATTR_PORTS)) {
+                       ret = DEV_CONFIG_RESTART;
+                       D(DEVICE, "Bridge %s attributes have changed, diff=[%lx %lx]\n",
+                         dev->ifname, diff[1], diff[0]);
+               }
 
                bridge_config_init(dev);
        }