interface: support "zone" config option
[project/netifd.git] / config.c
index b1b4bf35bb5a0256ec87f53f9914d65cdb428796..9bbda39d3fb5259499cc50c10309920b39537364 100644 (file)
--- a/config.c
+++ b/config.c
@@ -18,6 +18,8 @@
 
 #include <uci.h>
 
+#include <libubox/blobmsg_json.h>
+
 #include "netifd.h"
 #include "interface.h"
 #include "interface-ip.h"
@@ -31,6 +33,7 @@ bool config_init = false;
 static struct uci_context *uci_ctx;
 static struct uci_package *uci_network;
 static struct uci_package *uci_wireless;
+static struct blob_attr *board_netdevs;
 static struct blob_buf b;
 
 static int
@@ -52,6 +55,84 @@ config_section_idx(struct uci_section *s)
        return -1;
 }
 
+static bool
+config_bridge_has_vlans(const char *br_name)
+{
+       struct uci_element *e;
+
+       uci_foreach_element(&uci_network->sections, e) {
+               struct uci_section *s = uci_to_section(e);
+               const char *name;
+
+               if (strcmp(s->type, "bridge-vlan") != 0)
+                       continue;
+
+               name = uci_lookup_option_string(uci_ctx, s, "device");
+               if (!name)
+                       continue;
+
+               if (!strcmp(name, br_name))
+                       return true;
+       }
+
+       return false;
+}
+
+static void
+config_fixup_bridge_var(struct uci_section *s, const char *name, const char *val)
+{
+       struct uci_ptr ptr = {
+               .p = s->package,
+               .s = s,
+               .option = name,
+               .value = val,
+       };
+
+       uci_lookup_ptr(uci_ctx, &ptr, NULL, false);
+       if (ptr.o)
+               return;
+
+       uci_set(uci_ctx, &ptr);
+}
+
+/**
+ * config_fixup_bridge_ports - translate deprecated configs
+ *
+ * Old configs used "ifname" option for specifying bridge ports. For backward
+ * compatibility translate it into the new "ports" option.
+ */
+static void config_fixup_bridge_ports(struct uci_section *s)
+{
+       struct uci_ptr ptr = {
+               .p = s->package,
+               .s = s,
+               .option = "ifname",
+       };
+
+       if (uci_lookup_option(uci_ctx, s, "ports"))
+               return;
+
+       uci_lookup_ptr(uci_ctx, &ptr, NULL, false);
+       if (!ptr.o)
+               return;
+
+       ptr.value = "ports";
+       uci_rename(uci_ctx, &ptr);
+}
+
+static void
+config_fixup_bridge_vlan_filtering(struct uci_section *s, const char *name)
+{
+       bool has_vlans = config_bridge_has_vlans(name);
+
+       config_fixup_bridge_var(s, "__has_vlans", has_vlans ? "1" : "0");
+
+       if (!has_vlans)
+               return;
+
+       config_fixup_bridge_var(s, "vlan_filtering", "1");
+}
+
 static int
 config_parse_bridge_interface(struct uci_section *s, struct device_type *devtype)
 {
@@ -61,6 +142,8 @@ config_parse_bridge_interface(struct uci_section *s, struct device_type *devtype
        sprintf(name, "%s-%s", devtype->name_prefix, s->e.name);
        blobmsg_add_string(&b, "name", name);
 
+       config_fixup_bridge_ports(s);
+       config_fixup_bridge_vlan_filtering(s, name);
        uci_to_blob(&b, s, devtype->config_params);
        if (!device_create(name, devtype, b.head)) {
                D(INTERFACE, "Failed to create '%s' device for interface '%s'\n",
@@ -167,7 +250,7 @@ config_parse_rule(struct uci_section *s, bool v6)
 }
 
 static void
-config_init_devices(void)
+config_init_devices(bool bridge)
 {
        struct uci_element *e;
 
@@ -189,11 +272,19 @@ config_init_devices(void)
                if (type)
                        devtype = device_type_get(type);
 
+               if (bridge != (devtype && devtype->bridge_capability))
+                       continue;
+
                if (devtype)
                        params = devtype->config_params;
                if (!params)
                        params = simple_device_type.config_params;
 
+               if (devtype && devtype->bridge_capability) {
+                       config_fixup_bridge_ports(s);
+                       config_fixup_bridge_vlan_filtering(s, name);
+               }
+
                blob_buf_init(&b, 0);
                uci_to_blob(&b, s, params);
                if (devtype) {
@@ -212,6 +303,134 @@ config_init_devices(void)
        }
 }
 
+static void
+config_parse_vlan(struct device *dev, struct uci_section *s)
+{
+       enum {
+               BRVLAN_ATTR_VID,
+               BRVLAN_ATTR_LOCAL,
+               BRVLAN_ATTR_PORTS,
+               BRVLAN_ATTR_ALIAS,
+               __BRVLAN_ATTR_MAX,
+       };
+       static const struct blobmsg_policy vlan_attrs[__BRVLAN_ATTR_MAX] = {
+               [BRVLAN_ATTR_VID] = { "vlan", BLOBMSG_TYPE_INT32 },
+               [BRVLAN_ATTR_LOCAL] = { "local", BLOBMSG_TYPE_BOOL },
+               [BRVLAN_ATTR_PORTS] = { "ports", BLOBMSG_TYPE_ARRAY },
+               [BRVLAN_ATTR_ALIAS] = { "alias", BLOBMSG_TYPE_ARRAY },
+       };
+       static const struct uci_blob_param_info vlan_attr_info[__BRVLAN_ATTR_MAX] = {
+               [BRVLAN_ATTR_PORTS] = { .type = BLOBMSG_TYPE_STRING },
+               [BRVLAN_ATTR_ALIAS] = { .type = BLOBMSG_TYPE_STRING },
+       };
+       static const struct uci_blob_param_list vlan_attr_list = {
+               .n_params = __BRVLAN_ATTR_MAX,
+               .params = vlan_attrs,
+               .info = vlan_attr_info,
+       };
+       struct blob_attr *tb[__BRVLAN_ATTR_MAX];
+       struct blob_attr *cur;
+       struct bridge_vlan_port *port;
+       struct bridge_vlan *vlan;
+       unsigned int vid;
+       const char *val;
+       char *name_buf;
+       int name_len = 0;
+       int n_ports = 0;
+       int rem;
+
+       val = uci_lookup_option_string(uci_ctx, s, "vlan");
+       if (!val)
+               return;
+
+       blob_buf_init(&b, 0);
+       uci_to_blob(&b, s, &vlan_attr_list);
+       blobmsg_parse(vlan_attrs, __BRVLAN_ATTR_MAX, tb, blob_data(b.head), blob_len(b.head));
+
+       if (!tb[BRVLAN_ATTR_VID])
+               return;
+
+       vid = blobmsg_get_u32(tb[BRVLAN_ATTR_VID]);
+       if (!vid || vid > 4095)
+               return;
+
+       blobmsg_for_each_attr(cur, tb[BRVLAN_ATTR_PORTS], rem) {
+               name_len += strlen(blobmsg_get_string(cur)) + 1;
+               n_ports++;
+       }
+
+       vlan = calloc(1, sizeof(*vlan) + n_ports * sizeof(*port) + name_len);
+       if (!vlan)
+               return;
+
+       vlan->vid = vid;
+       vlan->local = true;
+       if (tb[BRVLAN_ATTR_LOCAL])
+               vlan->local = blobmsg_get_bool(tb[BRVLAN_ATTR_LOCAL]);
+
+       vlan->n_ports = n_ports;
+       vlan->ports = port = (struct bridge_vlan_port *)&vlan[1];
+       INIT_LIST_HEAD(&vlan->hotplug_ports);
+       name_buf = (char *)&port[n_ports];
+
+       blobmsg_for_each_attr(cur, tb[BRVLAN_ATTR_PORTS], rem) {
+               char *sep;
+
+               port->ifname = name_buf;
+               port->flags = BRVLAN_F_UNTAGGED;
+               strcpy(name_buf, blobmsg_get_string(cur));
+
+               sep = strchr(name_buf, ':');
+               if (sep) {
+                       for (*sep = 0, sep++; *sep; sep++)
+                               switch (*sep) {
+                               case '*':
+                                       port->flags |= BRVLAN_F_PVID;
+                                       break;
+                               case 't':
+                                       port->flags &= ~BRVLAN_F_UNTAGGED;
+                                       break;
+                               }
+               }
+
+               name_buf += strlen(name_buf) + 1;
+               port++;
+       }
+
+       blobmsg_for_each_attr(cur, tb[BRVLAN_ATTR_ALIAS], rem)
+               kvlist_set(&dev->vlan_aliases, blobmsg_get_string(cur), &vid);
+
+       vlist_add(&dev->vlans, &vlan->node, &vlan->vid);
+}
+
+
+static void
+config_init_vlans(void)
+{
+       struct uci_element *e;
+       struct device *dev;
+
+       device_vlan_update(false);
+       uci_foreach_element(&uci_network->sections, e) {
+               struct uci_section *s = uci_to_section(e);
+               const char *name;
+
+               if (strcmp(s->type, "bridge-vlan") != 0)
+                       continue;
+
+               name = uci_lookup_option_string(uci_ctx, s, "device");
+               if (!name)
+                       continue;
+
+               dev = device_get(name, 0);
+               if (!dev || !dev->vlans.update)
+                       continue;
+
+               config_parse_vlan(dev, s);
+       }
+       device_vlan_update(true);
+}
+
 static struct uci_package *
 config_init_package(const char *config)
 {
@@ -466,6 +685,57 @@ config_init_wireless(void)
        }
 }
 
+
+static struct blob_attr *
+config_find_blobmsg_attr(struct blob_attr *attr, const char *name, int type)
+{
+       struct blobmsg_policy policy = { .name = name, .type = type };
+       struct blob_attr *cur;
+
+       blobmsg_parse(&policy, 1, &cur, blobmsg_data(attr), blobmsg_len(attr));
+
+       return cur;
+}
+
+struct ether_addr *config_get_default_macaddr(const char *ifname)
+{
+       struct blob_attr *cur;
+
+       if (!board_netdevs)
+               return NULL;
+
+       cur = config_find_blobmsg_attr(board_netdevs, ifname, BLOBMSG_TYPE_TABLE);
+       if (!cur)
+               return NULL;
+
+       cur = config_find_blobmsg_attr(cur, "macaddr", BLOBMSG_TYPE_STRING);
+       if (!cur)
+               return NULL;
+
+       return ether_aton(blobmsg_get_string(cur));
+}
+
+static void
+config_init_board(void)
+{
+       struct blob_attr *cur;
+
+       blob_buf_init(&b, 0);
+
+       if (!blobmsg_add_json_from_file(&b, DEFAULT_BOARD_JSON))
+               return;
+
+       free(board_netdevs);
+       board_netdevs = NULL;
+
+       cur = config_find_blobmsg_attr(b.head, "network-device",
+                                      BLOBMSG_TYPE_TABLE);
+       if (!cur)
+               return;
+
+       board_netdevs = blob_memdup(cur);
+}
+
 int
 config_init_all(void)
 {
@@ -488,12 +758,15 @@ config_init_all(void)
                ret = -1;
        }
 
+       config_init_board();
+
        vlist_update(&interfaces);
        config_init = true;
-       device_lock();
 
        device_reset_config();
-       config_init_devices();
+       config_init_devices(true);
+       config_init_vlans();
+       config_init_devices(false);
        config_init_interfaces();
        config_init_ip();
        config_init_rules();
@@ -501,12 +774,10 @@ config_init_all(void)
        config_init_wireless();
 
        config_init = false;
-       device_unlock();
 
        device_reset_old();
        device_init_pending();
        vlist_flush(&interfaces);
-       device_free_unused(NULL);
        interface_refresh_assignments(false);
        interface_start_pending();
        wireless_start_pending();