interface: Fix triggering of interface update event
[project/netifd.git] / device.c
index 0d73138..82596e4 100644 (file)
--- a/device.c
+++ b/device.c
 #include <netinet/ether.h>
 #endif
 
+#include <libubox/list.h>
+
 #include "netifd.h"
 #include "system.h"
 #include "config.h"
 
+static struct list_head devtypes = LIST_HEAD_INIT(devtypes);
 static struct avl_tree devices;
 static bool default_ps = true;
 
@@ -45,11 +48,16 @@ static const struct blobmsg_policy dev_attrs[__DEV_ATTR_MAX] = {
        [DEV_ATTR_IGMPVERSION] = { .name = "igmpversion", .type = BLOBMSG_TYPE_INT32 },
        [DEV_ATTR_MLDVERSION] = { .name = "mldversion", .type = BLOBMSG_TYPE_INT32 },
        [DEV_ATTR_NEIGHREACHABLETIME] = { .name = "neighreachabletime", .type = BLOBMSG_TYPE_INT32 },
+       [DEV_ATTR_NEIGHGCSTALETIME] = { .name = "neighgcstaletime", .type = BLOBMSG_TYPE_INT32 },
        [DEV_ATTR_RPS] = { .name = "rps", .type = BLOBMSG_TYPE_BOOL },
        [DEV_ATTR_XPS] = { .name = "xps", .type = BLOBMSG_TYPE_BOOL },
        [DEV_ATTR_DADTRANSMITS] = { .name = "dadtransmits", .type = BLOBMSG_TYPE_INT32 },
        [DEV_ATTR_MULTICAST_TO_UNICAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
        [DEV_ATTR_MULTICAST_ROUTER] = { .name = "multicast_router", .type = BLOBMSG_TYPE_INT32 },
+       [DEV_ATTR_MULTICAST_FAST_LEAVE] = { .name = "multicast_fast_leave", . type = BLOBMSG_TYPE_BOOL },
+       [DEV_ATTR_MULTICAST] = { .name ="multicast", .type = BLOBMSG_TYPE_BOOL },
+       [DEV_ATTR_LEARNING] = { .name ="learning", .type = BLOBMSG_TYPE_BOOL },
+       [DEV_ATTR_UNICAST_FLOOD] = { .name ="unicast_flood", .type = BLOBMSG_TYPE_BOOL },
 };
 
 const struct uci_blob_param_list device_attr_list = {
@@ -59,6 +67,36 @@ const struct uci_blob_param_list device_attr_list = {
 
 static int __devlock = 0;
 
+int device_type_add(struct device_type *devtype)
+{
+       if (device_type_get(devtype->name)) {
+               netifd_log_message(L_WARNING, "Device handler '%s' already exists\n",
+                                  devtype->name);
+               return 1;
+       }
+
+       netifd_log_message(L_NOTICE, "Added device handler type: %s\n",
+               devtype->name);
+
+       list_add(&devtype->list, &devtypes);
+       return 0;
+}
+
+/* Retrieve the device type for the given name. If 'bridge' is true, the type
+ * must have bridge capabilities
+ */
+struct device_type *
+device_type_get(const char *tname)
+{
+       struct device_type *cur;
+
+       list_for_each_entry(cur, &devtypes, list)
+               if (!strcmp(cur->name, tname))
+                       return cur;
+
+       return NULL;
+}
+
 void device_lock(void)
 {
        __devlock++;
@@ -74,18 +112,14 @@ void device_unlock(void)
 static int set_device_state(struct device *dev, bool state)
 {
        if (state) {
-               /* Set ifindex for all devices being enabled so a valid  */
+               /* Get ifindex for all devices being enabled so a valid  */
                /* ifindex is in place avoiding possible race conditions */
                device_set_ifindex(dev, system_if_resolve(dev));
                if (!dev->ifindex)
                        return -1;
-       }
 
-       if (dev->external)
-               return 0;
-
-       if (state)
                system_if_up(dev);
+       }
        else
                system_if_down(dev);
 
@@ -118,11 +152,15 @@ simple_device_set_state(struct device *dev, bool state)
 }
 
 static struct device *
-simple_device_create(const char *name, struct blob_attr *attr)
+simple_device_create(const char *name, struct device_type *devtype,
+                    struct blob_attr *attr)
 {
        struct blob_attr *tb[__DEV_ATTR_MAX];
        struct device *dev = NULL;
 
+       /* device type is unused for simple devices */
+       devtype = NULL;
+
        blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb, blob_data(attr), blob_len(attr));
        dev = device_get(name, true);
        if (!dev)
@@ -141,7 +179,7 @@ static void simple_device_free(struct device *dev)
        free(dev);
 }
 
-const struct device_type simple_device_type = {
+struct device_type simple_device_type = {
        .name = "Network device",
        .config_params = &device_attr_list,
 
@@ -174,11 +212,20 @@ device_merge_settings(struct device *dev, struct device_settings *n)
                s->neigh4reachabletime : os->neigh4reachabletime;
        n->neigh6reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
                s->neigh6reachabletime : os->neigh6reachabletime;
+       n->neigh4gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
+               s->neigh4gcstaletime : os->neigh4gcstaletime;
+       n->neigh6gcstaletime = s->flags & DEV_OPT_NEIGHGCSTALETIME ?
+               s->neigh6gcstaletime : os->neigh6gcstaletime;
        n->dadtransmits = s->flags & DEV_OPT_DADTRANSMITS ?
                s->dadtransmits : os->dadtransmits;
+       n->multicast = s->flags & DEV_OPT_MULTICAST ?
+               s->multicast : os->multicast;
        n->multicast_to_unicast = s->multicast_to_unicast;
        n->multicast_router = s->multicast_router;
-       n->flags = s->flags | os->flags;
+       n->multicast_fast_leave = s->multicast_fast_leave;
+       n->learning = s->learning;
+       n->unicast_flood = s->unicast_flood;
+       n->flags = s->flags | os->flags | os->valid_flags;
 }
 
 void
@@ -193,12 +240,12 @@ device_init_settings(struct device *dev, struct blob_attr **tb)
        if ((cur = tb[DEV_ATTR_ENABLED]))
                disabled = !blobmsg_get_bool(cur);
 
-       if ((cur = tb[DEV_ATTR_MTU])) {
+       if ((cur = tb[DEV_ATTR_MTU]) && blobmsg_get_u32(cur) >= 68) {
                s->mtu = blobmsg_get_u32(cur);
                s->flags |= DEV_OPT_MTU;
        }
 
-       if ((cur = tb[DEV_ATTR_MTU6])) {
+       if ((cur = tb[DEV_ATTR_MTU6]) && blobmsg_get_u32(cur) >= 1280) {
                s->mtu6 = blobmsg_get_u32(cur);
                s->flags |= DEV_OPT_MTU6;
        }
@@ -259,6 +306,11 @@ device_init_settings(struct device *dev, struct blob_attr **tb)
                s->flags |= DEV_OPT_NEIGHREACHABLETIME;
        }
 
+       if ((cur = tb[DEV_ATTR_NEIGHGCSTALETIME])) {
+               s->neigh6gcstaletime = s->neigh4gcstaletime = blobmsg_get_u32(cur);
+               s->flags |= DEV_OPT_NEIGHGCSTALETIME;
+       }
+
        if ((cur = tb[DEV_ATTR_RPS])) {
                s->rps = blobmsg_get_bool(cur);
                s->flags |= DEV_OPT_RPS;
@@ -291,6 +343,26 @@ device_init_settings(struct device *dev, struct blob_attr **tb)
                        DPRINTF("Invalid value: %d - (Use 0: never, 1: learn, 2: always)\n", blobmsg_get_u32(cur));
        }
 
+       if ((cur = tb[DEV_ATTR_MULTICAST_FAST_LEAVE])) {
+               s->multicast_fast_leave = blobmsg_get_bool(cur);
+               s->flags |= DEV_OPT_MULTICAST_FAST_LEAVE;
+       }
+
+       if ((cur = tb[DEV_ATTR_MULTICAST])) {
+               s->multicast = blobmsg_get_bool(cur);
+               s->flags |= DEV_OPT_MULTICAST;
+       }
+
+       if ((cur = tb[DEV_ATTR_LEARNING])) {
+               s->learning = blobmsg_get_bool(cur);
+               s->flags |= DEV_OPT_LEARNING;
+       }
+
+       if ((cur = tb[DEV_ATTR_UNICAST_FLOOD])) {
+               s->unicast_flood = blobmsg_get_bool(cur);
+               s->flags |= DEV_OPT_UNICAST_FLOOD;
+       }
+
        device_set_disabled(dev, disabled);
 }
 
@@ -324,18 +396,31 @@ void device_broadcast_event(struct device *dev, enum device_event ev)
 int device_claim(struct device_user *dep)
 {
        struct device *dev = dep->dev;
-       int ret;
+       int ret = 0;
 
        if (dep->claimed)
                return 0;
 
+       if (!dev)
+               return -1;
+
        dep->claimed = true;
        D(DEVICE, "Claim %s %s, new active count: %d\n", dev->type->name, dev->ifname, dev->active + 1);
        if (++dev->active != 1)
                return 0;
 
        device_broadcast_event(dev, DEV_EVENT_SETUP);
-       ret = dev->set_state(dev, true);
+       if (dev->external) {
+               /* Get ifindex for external claimed devices so a valid   */
+               /* ifindex is in place avoiding possible race conditions */
+               device_set_ifindex(dev, system_if_resolve(dev));
+               if (!dev->ifindex)
+                       ret = -1;
+
+               system_if_get_settings(dev, &dev->orig_settings);
+       } else
+               ret = dev->set_state(dev, true);
+
        if (ret == 0)
                device_broadcast_event(dev, DEV_EVENT_UP);
        else {
@@ -365,6 +450,10 @@ void device_release(struct device_user *dep)
        device_broadcast_event(dev, DEV_EVENT_TEARDOWN);
        if (!dev->external)
                dev->set_state(dev, false);
+
+       if (dev->active)
+               return;
+
        device_broadcast_event(dev, DEV_EVENT_DOWN);
 }
 
@@ -376,24 +465,24 @@ int device_check_state(struct device *dev)
        return dev->type->check_state(dev);
 }
 
-void device_init_virtual(struct device *dev, const struct device_type *type, const char *name)
+void device_init_virtual(struct device *dev, struct device_type *type, const char *name)
 {
        assert(dev);
        assert(type);
 
-       if (name)
-               strncpy(dev->ifname, name, IFNAMSIZ);
-
-       D(DEVICE, "Initialize device '%s'\n", dev->ifname);
+       D(DEVICE, "Initialize device '%s'\n", name ? name : "");
        INIT_SAFE_LIST(&dev->users);
        INIT_SAFE_LIST(&dev->aliases);
        dev->type = type;
 
+       if (name)
+               device_set_ifname(dev, name);
+
        if (!dev->set_state)
                dev->set_state = set_device_state;
 }
 
-int device_init(struct device *dev, const struct device_type *type, const char *ifname)
+int device_init(struct device *dev, struct device_type *type, const char *ifname)
 {
        int ret;
 
@@ -423,6 +512,9 @@ device_create_default(const char *name, bool external)
 
        D(DEVICE, "Create simple device '%s'\n", name);
        dev = calloc(1, sizeof(*dev));
+       if (!dev)
+               return NULL;
+
        dev->external = external;
        dev->set_state = simple_device_set_state;
        device_init(dev, &simple_device_type, name);
@@ -433,6 +525,14 @@ device_create_default(const char *name, bool external)
 }
 
 struct device *
+device_find(const char *name)
+{
+       struct device *dev;
+
+       return avl_find_element(&devices, name, dev, avl);
+}
+
+struct device *
 device_get(const char *name, int create)
 {
        struct device *dev;
@@ -538,6 +638,27 @@ void device_set_ifindex(struct device *dev, int ifindex)
        device_broadcast_event(dev, DEV_EVENT_UPDATE_IFINDEX);
 }
 
+int device_set_ifname(struct device *dev, const char *name)
+{
+       int ret = 0;
+
+       if (!strcmp(dev->ifname, name))
+               return 0;
+
+       if (dev->avl.key)
+               avl_delete(&devices, &dev->avl);
+
+       strncpy(dev->ifname, name, IFNAMSIZ);
+
+       if (dev->avl.key)
+               ret = avl_insert(&devices, &dev->avl);
+
+       if (ret == 0)
+               device_broadcast_event(dev, DEV_EVENT_UPDATE_IFNAME);
+
+       return ret;
+}
+
 static int device_refcount(struct device *dev)
 {
        struct list_head *list;
@@ -656,7 +777,7 @@ device_init_pending(void)
 }
 
 static enum dev_change_type
-device_set_config(struct device *dev, const struct device_type *type,
+device_set_config(struct device *dev, struct device_type *type,
                  struct blob_attr *attr)
 {
        struct blob_attr *tb[__DEV_ATTR_MAX];
@@ -685,7 +806,7 @@ device_set_config(struct device *dev, const struct device_type *type,
 }
 
 enum dev_change_type
-device_apply_config(struct device *dev, const struct device_type *type,
+device_apply_config(struct device *dev, struct device_type *type,
                    struct blob_attr *config)
 {
        enum dev_change_type change;
@@ -704,12 +825,16 @@ device_apply_config(struct device *dev, const struct device_type *type,
                        free(dev->config);
                        dev->config = config;
                        if (change == DEV_CONFIG_RESTART && dev->present) {
+                               int ret = 0;
+
                                device_set_present(dev, false);
                                if (dev->active && !dev->external) {
-                                       dev->set_state(dev, false);
-                                       dev->set_state(dev, true);
+                                       ret = dev->set_state(dev, false);
+                                       if (!ret)
+                                               ret = dev->set_state(dev, true);
                                }
-                               device_set_present(dev, true);
+                               if (!ret)
+                                       device_set_present(dev, true);
                        }
                        break;
                case DEV_CONFIG_NO_CHANGE:
@@ -806,7 +931,7 @@ device_set_default_ps(bool state)
 }
 
 struct device *
-device_create(const char *name, const struct device_type *type,
+device_create(const char *name, struct device_type *type,
              struct blob_attr *config)
 {
        struct device *odev = NULL, *dev;
@@ -831,7 +956,7 @@ device_create(const char *name, const struct device_type *type,
        if (!config)
                return NULL;
 
-       dev = type->create(name, config);
+       dev = type->create(name, type, config);
        if (!dev)
                return NULL;
 
@@ -907,12 +1032,24 @@ device_dump_status(struct blob_buf *b, struct device *dev)
                        blobmsg_add_u32(b, "neigh4reachabletime", st.neigh4reachabletime);
                        blobmsg_add_u32(b, "neigh6reachabletime", st.neigh6reachabletime);
                }
+               if (st.flags & DEV_OPT_NEIGHGCSTALETIME) {
+                       blobmsg_add_u32(b, "neigh4gcstaletime", st.neigh4gcstaletime);
+                       blobmsg_add_u32(b, "neigh6gcstaletime", st.neigh6gcstaletime);
+               }
                if (st.flags & DEV_OPT_DADTRANSMITS)
                        blobmsg_add_u32(b, "dadtransmits", st.dadtransmits);
                if (st.flags & DEV_OPT_MULTICAST_TO_UNICAST)
                        blobmsg_add_u8(b, "multicast_to_unicast", st.multicast_to_unicast);
                if (st.flags & DEV_OPT_MULTICAST_ROUTER)
                        blobmsg_add_u32(b, "multicast_router", st.multicast_router);
+               if (st.flags & DEV_OPT_MULTICAST_FAST_LEAVE)
+                       blobmsg_add_u8(b, "multicast_fast_leave", st.multicast_fast_leave);
+               if (st.flags & DEV_OPT_MULTICAST)
+                       blobmsg_add_u8(b, "multicast", st.multicast);
+               if (st.flags & DEV_OPT_LEARNING)
+                       blobmsg_add_u8(b, "learning", st.learning);
+               if (st.flags & DEV_OPT_UNICAST_FLOOD)
+                       blobmsg_add_u8(b, "unicast_flood", st.unicast_flood);
        }
 
        s = blobmsg_open_table(b, "statistics");
@@ -922,3 +1059,8 @@ device_dump_status(struct blob_buf *b, struct device *dev)
                system_if_dump_stats(dev, b);
        blobmsg_close_table(b, s);
 }
+
+static void __init simple_device_type_init(void)
+{
+       device_type_add(&simple_device_type);
+}