interface: report link up events for force_link interfaces
[project/netifd.git] / config.c
index 31ebb8d..5d3db9f 100644 (file)
--- a/config.c
+++ b/config.c
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#define _GNU_SOURCE
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
 
+#include <uci.h>
+
 #include "netifd.h"
 #include "interface.h"
+#include "interface-ip.h"
+#include "iprule.h"
 #include "proto.h"
+#include "wireless.h"
+#include "config.h"
 
-struct uci_context *uci_ctx;
-static struct uci_package *uci_network;
 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_buf b;
-static unsigned int config_version = 1;
 
+static int
+config_section_idx(struct uci_section *s)
+{
+       struct uci_element *e;
+       int idx = 0;
+
+       uci_foreach_element(&uci_wireless->sections, e) {
+               struct uci_section *cur = uci_to_section(e);
+
+               if (s == cur)
+                       return idx;
 
-static void uci_attr_to_blob(struct blob_buf *b, const char *str,
-                            const char *name, enum blobmsg_type type)
+               if (!strcmp(cur->type, s->type))
+                       idx++;
+       }
+
+       return -1;
+}
+
+static int
+config_parse_bridge_interface(struct uci_section *s)
 {
-       char *err;
-       int intval;
-
-       switch (type) {
-       case BLOBMSG_TYPE_STRING:
-               blobmsg_add_string(b, name, str);
-               break;
-       case BLOBMSG_TYPE_BOOL:
-               if (!strcmp(str, "true") || !strcmp(str, "1"))
-                       intval = 1;
-               else if (!strcmp(str, "false") || !strcmp(str, "0"))
-                       intval = 0;
-               else
-                       return;
+       char *name;
 
-               blobmsg_add_u8(b, name, intval);
-               break;
-       case BLOBMSG_TYPE_INT32:
-               intval = strtol(str, &err, 0);
-               if (*err)
-                       return;
+       name = alloca(strlen(s->e.name) + 4);
+       sprintf(name, "br-%s", s->e.name);
+       blobmsg_add_string(&b, "name", name);
 
-               blobmsg_add_u32(b, name, intval);
-               break;
-       default:
-               break;
+       uci_to_blob(&b, s, bridge_device_type.config_params);
+       if (!device_create(name, &bridge_device_type, b.head)) {
+               D(INTERFACE, "Failed to create bridge for interface '%s'\n", s->e.name);
+               return -EINVAL;
        }
+
+       blob_buf_init(&b, 0);
+       blobmsg_add_string(&b, "ifname", name);
+       return 0;
 }
 
-static void uci_array_to_blob(struct blob_buf *b, struct uci_option *o,
-                             enum blobmsg_type type)
+static void
+config_parse_interface(struct uci_section *s, bool alias)
 {
-       struct uci_element *e;
-       char *str, *next, *word;
+       struct interface *iface;
+       const char *type = NULL, *disabled;
+       struct blob_attr *config;
+       bool bridge = false;
 
-       if (o->type == UCI_TYPE_LIST) {
-               uci_foreach_element(&o->v.list, e) {
-                       uci_attr_to_blob(b, e->name, NULL, type);
-               }
+       disabled = uci_lookup_option_string(uci_ctx, s, "disabled");
+       if (disabled && !strcmp(disabled, "1"))
                return;
+
+       blob_buf_init(&b, 0);
+
+       if (!alias)
+               type = uci_lookup_option_string(uci_ctx, s, "type");
+       if (type && !strcmp(type, "bridge")) {
+               if (config_parse_bridge_interface(s))
+                       return;
+
+               bridge = true;
        }
 
-       str = strdup(o->v.string);
-       next = str;
+       uci_to_blob(&b, s, &interface_attr_list);
 
-       while ((word = strsep(&next, " \t")) != NULL) {
-               if (!*word)
-                       continue;
+       iface = interface_alloc(s->e.name, b.head);
+       if (!iface)
+               return;
+
+       if (iface->proto_handler && iface->proto_handler->config_params)
+               uci_to_blob(&b, s, iface->proto_handler->config_params);
 
-               uci_attr_to_blob(b, word, NULL, type);
+       if (!bridge && uci_to_blob(&b, s, simple_device_type.config_params))
+               iface->device_config = true;
+
+       config = blob_memdup(b.head);
+       if (!config)
+               goto error;
+
+       if (alias) {
+               if (!interface_add_alias(iface, config))
+                       goto error_free_config;
+       } else {
+               interface_add(iface, config);
        }
+       return;
+
+error_free_config:
+       free(config);
+error:
+       free(iface);
+}
+
+static void
+config_parse_route(struct uci_section *s, bool v6)
+{
+       void *route;
 
-       free(str);
+       blob_buf_init(&b, 0);
+       route = blobmsg_open_array(&b, "route");
+       uci_to_blob(&b, s, &route_attr_list);
+       blobmsg_close_array(&b, route);
+       interface_ip_add_route(NULL, blob_data(b.head), v6);
 }
 
-static void __uci_to_blob(struct blob_buf *b, struct uci_section *s,
-                         const struct config_param_list *p)
+static void
+config_parse_rule(struct uci_section *s, bool v6)
+{
+       void *rule;
+
+       blob_buf_init(&b, 0);
+       rule = blobmsg_open_array(&b, "rule");
+       uci_to_blob(&b, s, &rule_attr_list);
+       blobmsg_close_array(&b, rule);
+       iprule_add(blob_data(b.head), v6);
+}
+
+static void
+config_init_devices(void)
 {
-       const struct blobmsg_policy *attr = NULL;
        struct uci_element *e;
-       struct uci_option *o;
-       void *array;
-       int i;
-
-       uci_foreach_element(&s->options, e) {
-               for (i = 0; i < p->n_params; i++) {
-                       attr = &p->params[i];
-                       if (!strcmp(attr->name, e->name))
-                               break;
-               }
 
-               if (i == p->n_params)
+       uci_foreach_element(&uci_network->sections, e) {
+               const struct uci_blob_param_list *params = NULL;
+               struct uci_section *s = uci_to_section(e);
+               const struct device_type *devtype = NULL;
+               struct device *dev;
+               const char *type, *name;
+
+               if (strcmp(s->type, "device") != 0)
                        continue;
 
-               o = uci_to_option(e);
+               name = uci_lookup_option_string(uci_ctx, s, "name");
+               if (!name)
+                       continue;
 
-               if (attr->type == BLOBMSG_TYPE_ARRAY) {
-                       if (!p->info)
+               type = uci_lookup_option_string(uci_ctx, s, "type");
+               if (type) {
+                       if (!strcmp(type, "8021ad"))
+                               devtype = &vlandev_device_type;
+                       else if (!strcmp(type, "8021q"))
+                               devtype = &vlandev_device_type;
+                       else if (!strcmp(type, "bridge"))
+                               devtype = &bridge_device_type;
+                       else if (!strcmp(type, "macvlan"))
+                               devtype = &macvlan_device_type;
+                       else if (!strcmp(type, "tunnel"))
+                               devtype = &tunnel_device_type;
+               }
+
+               if (devtype)
+                       params = devtype->config_params;
+               if (!params)
+                       params = simple_device_type.config_params;
+
+               blob_buf_init(&b, 0);
+               uci_to_blob(&b, s, params);
+               if (devtype) {
+                       dev = device_create(name, devtype, b.head);
+                       if (!dev)
+                               continue;
+               } else {
+                       dev = device_get(name, 1);
+                       if (!dev)
                                continue;
 
-                       array = blobmsg_open_array(b, attr->name);
-                       uci_array_to_blob(b, o, p->info[i].type);
-                       blobmsg_close_array(b, array);
-                       continue;
+                       dev->current_config = true;
+                       device_apply_config(dev, dev->type, b.head);
                }
+               dev->default_config = false;
+       }
+}
 
-               if (o->type == UCI_TYPE_LIST)
-                       continue;
+static struct uci_package *
+config_init_package(const char *config)
+{
+       struct uci_context *ctx = uci_ctx;
+       struct uci_package *p = NULL;
+
+       if (!ctx) {
+               ctx = uci_alloc_context();
+               uci_ctx = ctx;
+
+               ctx->flags &= ~UCI_FLAG_STRICT;
+               if (config_path)
+                       uci_set_confdir(ctx, config_path);
+
+#ifdef DUMMY_MODE
+               uci_set_savedir(ctx, "./tmp");
+#endif
+       } else {
+               p = uci_lookup_package(ctx, config);
+               if (p)
+                       uci_unload(ctx, p);
+       }
+
+       if (uci_load(ctx, config, &p))
+               return NULL;
+
+       return p;
+}
+
+static void
+config_init_interfaces(void)
+{
+       struct uci_element *e;
+
+       uci_foreach_element(&uci_network->sections, e) {
+               struct uci_section *s = uci_to_section(e);
+
+               if (!strcmp(s->type, "interface"))
+                       config_parse_interface(s, false);
+       }
+
+       uci_foreach_element(&uci_network->sections, e) {
+               struct uci_section *s = uci_to_section(e);
 
-               uci_attr_to_blob(b, o->v.string, attr->name, attr->type);
+               if (!strcmp(s->type, "alias"))
+                       config_parse_interface(s, true);
        }
 }
 
-static void uci_to_blob(struct blob_buf *b, struct uci_section *s,
-                       const struct config_param_list *p)
+static void
+config_init_routes(void)
 {
-       int i;
+       struct interface *iface;
+       struct uci_element *e;
+
+       vlist_for_each_element(&interfaces, iface, node)
+               interface_ip_update_start(&iface->config_ip);
 
-       __uci_to_blob(b, s, p);
-       for (i = 0; i < p->n_next; i++)
-               uci_to_blob(b, s, p->next[i]);
+       uci_foreach_element(&uci_network->sections, e) {
+               struct uci_section *s = uci_to_section(e);
+
+               if (!strcmp(s->type, "route"))
+                       config_parse_route(s, false);
+               else if (!strcmp(s->type, "route6"))
+                       config_parse_route(s, true);
+       }
+
+       vlist_for_each_element(&interfaces, iface, node)
+               interface_ip_update_complete(&iface->config_ip);
 }
 
-static int
-config_parse_bridge_interface(struct uci_section *s)
+static void
+config_init_rules(void)
 {
-       char *name;
+       struct uci_element *e;
 
-       name = alloca(strlen(s->e.name) + 4);
-       sprintf(name, "br-%s", s->e.name);
-       blobmsg_add_string(&b, "name", name);
+       iprule_update_start();
 
-       uci_to_blob(&b, s, bridge_device_type.config_params);
-       if (!bridge_device_type.create(b.head)) {
-               DPRINTF("Failed to create bridge for interface '%s'\n", s->e.name);
-               return -EINVAL;
+       uci_foreach_element(&uci_network->sections, e) {
+               struct uci_section *s = uci_to_section(e);
+
+               if (!strcmp(s->type, "rule"))
+                       config_parse_rule(s, false);
+               else if (!strcmp(s->type, "rule6"))
+                       config_parse_rule(s, true);
        }
 
-       blob_buf_init(&b, 0);
-       blobmsg_add_string(&b, "ifname", name);
-       return 0;
+       iprule_update_complete();
 }
 
-void
-config_set_state(struct config_state *state, struct blob_attr *attr)
+static void
+config_init_globals(void)
 {
-       state->data = malloc(blob_pad_len(attr));
-       if (!state->data)
+       struct uci_section *globals = uci_lookup_section(
+                       uci_ctx, uci_network, "globals");
+       if (!globals)
                return;
 
-       memcpy(state->data, attr, blob_pad_len(attr));
+       const char *ula_prefix = uci_lookup_option_string(
+                       uci_ctx, globals, "ula_prefix");
+       interface_ip_set_ula_prefix(ula_prefix);
+
+       const char *default_ps = uci_lookup_option_string(
+                       uci_ctx, globals, "default_ps");
+
+       if (default_ps)
+               device_set_default_ps(strcmp(default_ps, "1") ? false : true);
 }
 
 static void
-config_parse_interface(struct uci_section *s)
+config_parse_wireless_device(struct uci_section *s)
 {
-       struct interface *iface;
-       const char *type;
+       struct wireless_driver *drv;
+       const char *driver_name;
+
+       driver_name = uci_lookup_option_string(uci_ctx, s, "type");
+       if (!driver_name)
+               return;
 
-       DPRINTF("Create interface '%s'\n", s->e.name);
+       drv = avl_find_element(&wireless_drivers, driver_name, drv, node);
+       if (!drv)
+               return;
 
        blob_buf_init(&b, 0);
+       uci_to_blob(&b, s, drv->device.config);
+       wireless_device_create(drv, s->e.name, b.head);
+}
 
-       type = uci_lookup_option_string(uci_ctx, s, "type");
-       if (type && !strcmp(type, "bridge"))
-               if (config_parse_bridge_interface(s))
-                       return;
+static void
+config_parse_wireless_interface(struct wireless_device *wdev, struct uci_section *s)
+{
+       char *name;
 
-       uci_to_blob(&b, s, &interface_attr_list);
-       iface = interface_alloc(s->e.name, b.head);
-       if (!iface)
-               return;
+       name = alloca(strlen(s->type) + 16);
+       sprintf(name, "@%s[%d]", s->type, config_section_idx(s));
 
        blob_buf_init(&b, 0);
-       if (iface->proto_handler && iface->proto_handler->config_params)
-               uci_to_blob(&b, s, iface->proto_handler->config_params);
-
-       proto_init_interface(iface, b.head);
-       iface->config.version = config_version;
+       uci_to_blob(&b, s, wdev->drv->interface.config);
+       wireless_interface_create(wdev, b.head, s->anonymous ? name : s->e.name);
 }
 
-void
-config_init_devices(void)
+static void
+config_init_wireless(void)
 {
+       struct wireless_device *wdev;
        struct uci_element *e;
+       const char *dev_name;
 
-       uci_foreach_element(&uci_network->sections, e) {
+       if (!uci_wireless) {
+               DPRINTF("No wireless configuration found\n");
+               return;
+       }
+
+       vlist_update(&wireless_devices);
+
+       uci_foreach_element(&uci_wireless->sections, e) {
                struct uci_section *s = uci_to_section(e);
-               const struct device_type *devtype;
-               const char *type;
+               if (strcmp(s->type, "wifi-device") != 0)
+                       continue;
 
-               if (strcmp(s->type, "device") != 0)
+               config_parse_wireless_device(s);
+       }
+
+       vlist_flush(&wireless_devices);
+
+       vlist_for_each_element(&wireless_devices, wdev, node) {
+               wdev->vif_idx = 0;
+               vlist_update(&wdev->interfaces);
+       }
+
+       uci_foreach_element(&uci_wireless->sections, e) {
+               struct uci_section *s = uci_to_section(e);
+
+               if (strcmp(s->type, "wifi-iface") != 0)
                        continue;
 
-               blob_buf_init(&b, 0);
-               type = uci_lookup_option_string(uci_ctx, s, "type");
-               if (type && !strcmp(type, "bridge"))
-                       devtype = &bridge_device_type;
-               else
-                       devtype = &simple_device_type;
+               dev_name = uci_lookup_option_string(uci_ctx, s, "device");
+               if (!dev_name)
+                       continue;
 
-               uci_to_blob(&b, s, devtype->config_params);
-               devtype->create(b.head);
+               wdev = vlist_find(&wireless_devices, dev_name, wdev, node);
+               if (!wdev) {
+                       DPRINTF("device %s not found!\n", dev_name);
+                       continue;
+               }
+
+               config_parse_wireless_interface(wdev, s);
        }
+
+       vlist_for_each_element(&wireless_devices, wdev, node)
+               vlist_flush(&wdev->interfaces);
 }
 
 void
-config_init_interfaces(const char *name)
+config_init_all(void)
 {
-       struct uci_context *ctx;
-       struct uci_package *p = NULL;
-       struct uci_element *e;
-
-       ctx = uci_alloc_context();
-       uci_ctx = ctx;
-
-       uci_set_confdir(ctx, "./config");
-
-       if (uci_load(ctx, "network", &p)) {
+       uci_network = config_init_package("network");
+       if (!uci_network) {
                fprintf(stderr, "Failed to load network config\n");
                return;
        }
 
-       uci_network = p;
+       uci_wireless = config_init_package("wireless");
+
+       vlist_update(&interfaces);
        config_init = true;
+       device_lock();
 
+       device_reset_config();
        config_init_devices();
+       config_init_interfaces();
+       config_init_routes();
+       config_init_rules();
+       config_init_globals();
+       config_init_wireless();
 
-       uci_foreach_element(&p->sections, e) {
-               struct uci_section *s = uci_to_section(e);
-
-               if (name && strcmp(s->e.name, name) != 0)
-                       continue;
-
-               if (!strcmp(s->type, "interface"))
-                       config_parse_interface(s);
-       }
-       device_free_unused(NULL);
        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();
 }