2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
21 #include "interface.h"
22 #include "interface-ip.h"
26 bool config_init = false;
28 static struct uci_context *uci_ctx;
29 static struct uci_package *uci_network;
30 static struct blob_buf b;
32 static void uci_attr_to_blob(struct blob_buf *b, const char *str,
33 const char *name, enum blobmsg_type type)
39 case BLOBMSG_TYPE_STRING:
40 blobmsg_add_string(b, name, str);
42 case BLOBMSG_TYPE_BOOL:
43 if (!strcmp(str, "true") || !strcmp(str, "1"))
45 else if (!strcmp(str, "false") || !strcmp(str, "0"))
50 blobmsg_add_u8(b, name, intval);
52 case BLOBMSG_TYPE_INT32:
53 intval = strtol(str, &err, 0);
57 blobmsg_add_u32(b, name, intval);
64 static void uci_array_to_blob(struct blob_buf *b, struct uci_option *o,
65 enum blobmsg_type type)
67 struct uci_element *e;
68 char *str, *next, *word;
70 if (o->type == UCI_TYPE_LIST) {
71 uci_foreach_element(&o->v.list, e) {
72 uci_attr_to_blob(b, e->name, NULL, type);
77 str = strdup(o->v.string);
80 while ((word = strsep(&next, " \t")) != NULL) {
84 uci_attr_to_blob(b, word, NULL, type);
90 static void __uci_to_blob(struct blob_buf *b, struct uci_section *s,
91 const struct config_param_list *p)
93 const struct blobmsg_policy *attr = NULL;
94 struct uci_element *e;
99 uci_foreach_element(&s->options, e) {
100 for (i = 0; i < p->n_params; i++) {
101 attr = &p->params[i];
102 if (!strcmp(attr->name, e->name))
106 if (i == p->n_params)
109 o = uci_to_option(e);
111 if (attr->type == BLOBMSG_TYPE_ARRAY) {
115 array = blobmsg_open_array(b, attr->name);
116 uci_array_to_blob(b, o, p->info[i].type);
117 blobmsg_close_array(b, array);
121 if (o->type == UCI_TYPE_LIST)
124 uci_attr_to_blob(b, o->v.string, attr->name, attr->type);
128 static void uci_to_blob(struct blob_buf *b, struct uci_section *s,
129 const struct config_param_list *p)
133 __uci_to_blob(b, s, p);
134 for (i = 0; i < p->n_next; i++)
135 uci_to_blob(b, s, p->next[i]);
139 config_parse_bridge_interface(struct uci_section *s)
143 name = alloca(strlen(s->e.name) + 4);
144 sprintf(name, "br-%s", s->e.name);
145 blobmsg_add_string(&b, "name", name);
147 uci_to_blob(&b, s, bridge_device_type.config_params);
148 if (!device_create(name, &bridge_device_type, b.head)) {
149 D(INTERFACE, "Failed to create bridge for interface '%s'\n", s->e.name);
153 blob_buf_init(&b, 0);
154 blobmsg_add_string(&b, "ifname", name);
159 config_parse_interface(struct uci_section *s)
161 struct interface *iface;
163 struct blob_attr *config;
166 blob_buf_init(&b, 0);
168 type = uci_lookup_option_string(uci_ctx, s, "type");
169 if (type && !strcmp(type, "bridge"))
170 if (config_parse_bridge_interface(s))
173 uci_to_blob(&b, s, &interface_attr_list);
174 iface = calloc(1, sizeof(*iface));
178 interface_init(iface, s->e.name, b.head);
180 if (iface->proto_handler && iface->proto_handler->config_params)
181 uci_to_blob(&b, s, iface->proto_handler->config_params);
183 config = malloc(blob_pad_len(b.head));
189 memcpy(config, b.head, blob_pad_len(b.head));
190 interface_add(iface, config);
193 * need to look up the interface name again, in case of config update,
194 * the pointer will have changed
196 iface = vlist_find(&interfaces, s->e.name, iface, node);
200 dev = iface->main_dev.dev;
201 if (!dev || !dev->default_config)
204 blob_buf_init(&b, 0);
205 uci_to_blob(&b, s, dev->type->config_params);
206 if (blob_len(b.head) == 0)
209 device_set_config(dev, dev->type, b.head);
213 config_parse_route(struct uci_section *s, bool v6)
217 blob_buf_init(&b, 0);
218 route = blobmsg_open_array(&b, "route");
219 uci_to_blob(&b, s, &route_attr_list);
220 blobmsg_close_array(&b, route);
221 interface_ip_add_route(NULL, blob_data(b.head), v6);
225 config_init_devices(void)
227 struct uci_element *e;
229 uci_foreach_element(&uci_network->sections, e) {
230 struct uci_section *s = uci_to_section(e);
231 const struct device_type *devtype = NULL;
232 const char *type, *name;
234 if (strcmp(s->type, "device") != 0)
237 name = uci_lookup_option_string(uci_ctx, s, "name");
241 type = uci_lookup_option_string(uci_ctx, s, "type");
243 if (!strcmp(type, "bridge"))
244 devtype = &bridge_device_type;
245 else if (!strcmp(type, "tunnel"))
246 devtype = &tunnel_device_type;
250 devtype = &simple_device_type;
252 blob_buf_init(&b, 0);
253 uci_to_blob(&b, s, devtype->config_params);
254 device_create(name, devtype, b.head);
259 config_diff(struct blob_attr **tb1, struct blob_attr **tb2,
260 const struct config_param_list *config, unsigned long *diff)
265 for (i = 0; i < config->n_params; i++) {
266 if (!tb1[i] && !tb2[i])
269 if (!!tb1[i] != !!tb2[i])
272 if (blob_len(tb1[i]) != blob_len(tb2[i]))
275 if (memcmp(tb1[i], tb2[i], blob_raw_len(tb1[i])) != 0)
293 __config_check_equal(struct blob_attr *c1, struct blob_attr *c2,
294 const struct config_param_list *config)
296 struct blob_attr **tb1, **tb2;
304 tb1 = alloca(config->n_params * sizeof(struct blob_attr *));
305 blobmsg_parse(config->params, config->n_params, tb1,
306 blob_data(c1), blob_len(c1));
308 tb2 = alloca(config->n_params * sizeof(struct blob_attr *));
309 blobmsg_parse(config->params, config->n_params, tb2,
310 blob_data(c2), blob_len(c2));
312 return !config_diff(tb1, tb2, config, NULL);
316 config_check_equal(struct blob_attr *c1, struct blob_attr *c2,
317 const struct config_param_list *config)
321 if (!__config_check_equal(c1, c2, config))
324 for (i = 0; i < config->n_next; i++) {
325 if (!__config_check_equal(c1, c2, config->next[i]))
333 config_memdup(struct blob_attr *attr)
335 struct blob_attr *ret;
336 int size = blob_pad_len(attr);
342 memcpy(ret, attr, size);
346 static struct uci_package *
347 config_init_package(const char *config)
349 struct uci_context *ctx = uci_ctx;
350 struct uci_package *p = NULL;
353 ctx = uci_alloc_context();
357 uci_set_confdir(ctx, "./config");
358 uci_set_savedir(ctx, "./tmp");
361 p = uci_lookup_package(ctx, config);
366 if (uci_load(ctx, config, &p))
373 config_init_interfaces(void)
375 struct uci_element *e;
377 uci_foreach_element(&uci_network->sections, e) {
378 struct uci_section *s = uci_to_section(e);
380 if (!strcmp(s->type, "interface"))
381 config_parse_interface(s);
386 config_init_routes(void)
388 struct interface *iface;
389 struct uci_element *e;
391 vlist_for_each_element(&interfaces, iface, node)
392 interface_ip_update_start(&iface->config_ip);
394 uci_foreach_element(&uci_network->sections, e) {
395 struct uci_section *s = uci_to_section(e);
397 if (!strcmp(s->type, "route"))
398 config_parse_route(s, false);
399 else if (!strcmp(s->type, "route6"))
400 config_parse_route(s, true);
403 vlist_for_each_element(&interfaces, iface, node)
404 interface_ip_update_complete(&iface->config_ip);
408 config_init_all(void)
410 uci_network = config_init_package("network");
412 fprintf(stderr, "Failed to load network config\n");
416 vlist_update(&interfaces);
420 device_reset_config();
421 config_init_devices();
422 config_init_interfaces();
423 config_init_routes();
429 device_init_pending();
430 device_free_unused(NULL);
431 vlist_flush(&interfaces);
432 interface_start_pending();