interface-ip: DNS name server sorting support in resolv.conf.auto
[project/netifd.git] / device.c
index 3ca867c..a7d18af 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;
 
 static const struct blobmsg_policy dev_attrs[__DEV_ATTR_MAX] = {
        [DEV_ATTR_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING },
-       [DEV_ATTR_IFNAME] = { .name = "ifname", .type = BLOBMSG_TYPE_ARRAY },
        [DEV_ATTR_MTU] = { .name = "mtu", .type = BLOBMSG_TYPE_INT32 },
+       [DEV_ATTR_MTU6] = { .name = "mtu6", .type = BLOBMSG_TYPE_INT32 },
        [DEV_ATTR_MACADDR] = { .name = "macaddr", .type = BLOBMSG_TYPE_STRING },
        [DEV_ATTR_TXQUEUELEN] = { .name = "txqueuelen", .type = BLOBMSG_TYPE_INT32 },
        [DEV_ATTR_ENABLED] = { .name = "enabled", .type = BLOBMSG_TYPE_BOOL },
@@ -44,8 +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 = {
@@ -55,6 +67,46 @@ 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;
+}
+
+/* initialize device type list and add known types */
+static void __init devtypes_init(void)
+{
+       device_type_add(&simple_device_type);
+       device_type_add(&bridge_device_type);
+       device_type_add(&tunnel_device_type);
+       device_type_add(&macvlan_device_type);
+       device_type_add(&vlandev_device_type);
+}
+
+/* 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++;
@@ -70,18 +122,14 @@ 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);
 
@@ -114,11 +162,15 @@ 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)
@@ -137,7 +189,7 @@ 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,
 
@@ -154,6 +206,7 @@ device_merge_settings(struct device *dev, struct device_settings *n)
 
        memset(n, 0, sizeof(*n));
        n->mtu = s->flags & DEV_OPT_MTU ? s->mtu : os->mtu;
+       n->mtu6 = s->flags & DEV_OPT_MTU6 ? s->mtu6 : os->mtu6;
        n->txqueuelen = s->flags & DEV_OPT_TXQUEUELEN ?
                s->txqueuelen : os->txqueuelen;
        memcpy(n->macaddr,
@@ -168,8 +221,21 @@ device_merge_settings(struct device *dev, struct device_settings *n)
        n->neigh4reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
                s->neigh4reachabletime : os->neigh4reachabletime;
        n->neigh6reachabletime = s->flags & DEV_OPT_NEIGHREACHABLETIME ?
-                       s->neigh6reachabletime : os->neigh6reachabletime;
-       n->flags = s->flags | os->flags;
+               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->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
@@ -189,6 +255,11 @@ device_init_settings(struct device *dev, struct blob_attr **tb)
                s->flags |= DEV_OPT_MTU;
        }
 
+       if ((cur = tb[DEV_ATTR_MTU6])) {
+               s->mtu6 = blobmsg_get_u32(cur);
+               s->flags |= DEV_OPT_MTU6;
+       }
+
        if ((cur = tb[DEV_ATTR_TXQUEUELEN])) {
                s->txqueuelen = blobmsg_get_u32(cur);
                s->flags |= DEV_OPT_TXQUEUELEN;
@@ -245,15 +316,62 @@ device_init_settings(struct device *dev, struct blob_attr **tb)
                s->flags |= DEV_OPT_NEIGHREACHABLETIME;
        }
 
-       if ((cur = tb[DEV_ATTR_RPS]))
+       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;
+       }
        else
-               s->rps = true;
+               s->rps = default_ps;
 
-       if ((cur = tb[DEV_ATTR_XPS]))
+       if ((cur = tb[DEV_ATTR_XPS])) {
                s->xps = blobmsg_get_bool(cur);
+               s->flags |= DEV_OPT_XPS;
+       }
        else
-               s->xps = true;
+               s->xps = default_ps;
+
+       if ((cur = tb[DEV_ATTR_DADTRANSMITS])) {
+               s->dadtransmits = blobmsg_get_u32(cur);
+               s->flags |= DEV_OPT_DADTRANSMITS;
+       }
+
+       if ((cur = tb[DEV_ATTR_MULTICAST_TO_UNICAST])) {
+               s->multicast_to_unicast = blobmsg_get_bool(cur);
+               s->flags |= DEV_OPT_MULTICAST_TO_UNICAST;
+       }
+
+       if ((cur = tb[DEV_ATTR_MULTICAST_ROUTER])) {
+               s->multicast_router = blobmsg_get_u32(cur);
+               if (s->multicast_router <= 2)
+                       s->flags |= DEV_OPT_MULTICAST_ROUTER;
+               else
+                       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);
 }
@@ -288,18 +406,31 @@ 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 {
@@ -340,24 +471,24 @@ 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;
 
@@ -371,6 +502,8 @@ int device_init(struct device *dev, const struct device_type *type, const char *
 
        system_if_clear_state(dev);
        device_check_state(dev);
+       dev->settings.rps = default_ps;
+       dev->settings.xps = default_ps;
 
        return 0;
 }
@@ -385,14 +518,27 @@ 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);
        dev->default_config = true;
+       if (external)
+               system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
        return dev;
 }
 
 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;
@@ -406,6 +552,7 @@ device_get(const char *name, int create)
        dev = avl_find_element(&devices, name, dev, avl);
        if (dev) {
                if (create > 1 && !dev->external) {
+                       system_if_apply_settings(dev, &dev->settings, dev->settings.flags);
                        dev->external = true;
                        device_set_present(dev, true);
                }
@@ -497,6 +644,27 @@ 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;
@@ -511,19 +679,11 @@ static int device_refcount(struct device *dev)
        return count;
 }
 
-void device_add_user(struct device_user *dep, struct device *dev)
+static void
+__device_add_user(struct device_user *dep, struct device *dev)
 {
        struct safe_list *head;
 
-       if (dep->dev == dev)
-               return;
-
-       if (dep->dev)
-               device_remove_user(dep);
-
-       if (!dev)
-               return;
-
        dep->dev = dev;
 
        if (dep->alias)
@@ -544,6 +704,20 @@ void device_add_user(struct device_user *dep, struct device *dev)
        }
 }
 
+void device_add_user(struct device_user *dep, struct device *dev)
+{
+       if (dep->dev == dev)
+               return;
+
+       if (dep->dev)
+               device_remove_user(dep);
+
+       if (!dev)
+               return;
+
+       __device_add_user(dep, dev);
+}
+
 void
 device_free(struct device *dev)
 {
@@ -609,7 +783,7 @@ 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];
@@ -638,7 +812,7 @@ 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;
@@ -657,12 +831,16 @@ 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:
@@ -679,21 +857,19 @@ static void
 device_replace(struct device *dev, struct device *odev)
 {
        struct device_user *dep, *tmp;
-       bool present = odev->present;
 
-       if (present)
+       __devlock++;
+       if (odev->present)
                device_set_present(odev, false);
 
        list_for_each_entry_safe(dep, tmp, &odev->users.list, list.list) {
                device_release(dep);
                safe_list_del(&dep->list);
-               safe_list_add(&dep->list, &dev->users);
-               dep->dev = dev;
+               __device_add_user(dep, dev);
        }
-       device_free(odev);
+       __devlock--;
 
-       if (present)
-               device_set_present(dev, true);
+       device_free(odev);
 }
 
 void
@@ -718,12 +894,50 @@ device_reset_old(void)
                        continue;
 
                ndev = device_create_default(dev->ifname, dev->external);
+               if (!ndev)
+                       continue;
+
                device_replace(ndev, dev);
        }
 }
 
+void
+device_set_default_ps(bool state)
+{
+       struct device *dev;
+
+       if (state == default_ps)
+               return;
+
+       default_ps = state;
+
+       avl_for_each_element(&devices, dev, avl) {
+               struct device_settings *s = &dev->settings;
+               unsigned int apply_mask = 0;
+
+               if (!(s->flags & DEV_OPT_RPS)) {
+                       s->rps = default_ps;
+                       apply_mask |= DEV_OPT_RPS;
+               }
+
+               if (!(s->flags & DEV_OPT_XPS)) {
+                       s->xps = default_ps;
+                       apply_mask |= DEV_OPT_XPS;
+               }
+
+               if (!apply_mask)
+                       continue;
+
+               if (!(dev->external || (dev->present && dev->active)) ||
+                               dev->config_pending)
+                       continue;
+
+               system_if_apply_settings(dev, s, apply_mask);
+       }
+}
+
 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;
@@ -748,7 +962,7 @@ 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;
 
@@ -757,8 +971,10 @@ device_create(const char *name, const struct device_type *type,
        if (odev)
                device_replace(dev, odev);
 
-       if (!config_init && dev->config_pending)
+       if (!config_init && dev->config_pending) {
                type->config_init(dev);
+               dev->config_pending = false;
+       }
 
        return dev;
 }
@@ -800,6 +1016,8 @@ device_dump_status(struct blob_buf *b, struct device *dev)
                device_merge_settings(dev, &st);
                if (st.flags & DEV_OPT_MTU)
                        blobmsg_add_u32(b, "mtu", st.mtu);
+               if (st.flags & DEV_OPT_MTU6)
+                       blobmsg_add_u32(b, "mtu6", st.mtu6);
                if (st.flags & DEV_OPT_MACADDR)
                        blobmsg_add_string(b, "macaddr", format_macaddr(st.macaddr));
                if (st.flags & DEV_OPT_TXQUEUELEN)
@@ -820,6 +1038,24 @@ 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");