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, bool alias)
161 struct interface *iface;
162 const char *type = NULL;
163 struct blob_attr *config;
166 blob_buf_init(&b, 0);
169 type = uci_lookup_option_string(uci_ctx, s, "type");
170 if (type && !strcmp(type, "bridge"))
171 if (config_parse_bridge_interface(s))
174 uci_to_blob(&b, s, &interface_attr_list);
175 iface = calloc(1, sizeof(*iface));
179 interface_init(iface, s->e.name, b.head);
181 if (iface->proto_handler && iface->proto_handler->config_params)
182 uci_to_blob(&b, s, iface->proto_handler->config_params);
184 config = malloc(blob_pad_len(b.head));
188 memcpy(config, b.head, blob_pad_len(b.head));
191 if (!interface_add_alias(iface, config))
192 goto error_free_config;
194 interface_add(iface, config);
198 * need to look up the interface name again, in case of config update,
199 * the pointer will have changed
201 iface = vlist_find(&interfaces, s->e.name, iface, node);
205 dev = iface->main_dev.dev;
206 if (!dev || !dev->default_config)
209 blob_buf_init(&b, 0);
210 uci_to_blob(&b, s, dev->type->config_params);
211 if (blob_len(b.head) == 0)
214 device_set_config(dev, dev->type, b.head);
223 config_parse_route(struct uci_section *s, bool v6)
227 blob_buf_init(&b, 0);
228 route = blobmsg_open_array(&b, "route");
229 uci_to_blob(&b, s, &route_attr_list);
230 blobmsg_close_array(&b, route);
231 interface_ip_add_route(NULL, blob_data(b.head), v6);
235 config_init_devices(void)
237 struct uci_element *e;
239 uci_foreach_element(&uci_network->sections, e) {
240 struct uci_section *s = uci_to_section(e);
241 const struct device_type *devtype = NULL;
242 const char *type, *name;
244 if (strcmp(s->type, "device") != 0)
247 name = uci_lookup_option_string(uci_ctx, s, "name");
251 type = uci_lookup_option_string(uci_ctx, s, "type");
253 if (!strcmp(type, "bridge"))
254 devtype = &bridge_device_type;
255 else if (!strcmp(type, "tunnel"))
256 devtype = &tunnel_device_type;
260 devtype = &simple_device_type;
262 blob_buf_init(&b, 0);
263 uci_to_blob(&b, s, devtype->config_params);
264 device_create(name, devtype, b.head);
269 config_diff(struct blob_attr **tb1, struct blob_attr **tb2,
270 const struct config_param_list *config, unsigned long *diff)
275 for (i = 0; i < config->n_params; i++) {
276 if (!tb1[i] && !tb2[i])
279 if (!!tb1[i] != !!tb2[i])
282 if (blob_len(tb1[i]) != blob_len(tb2[i]))
285 if (memcmp(tb1[i], tb2[i], blob_raw_len(tb1[i])) != 0)
303 __config_check_equal(struct blob_attr *c1, struct blob_attr *c2,
304 const struct config_param_list *config)
306 struct blob_attr **tb1, **tb2;
314 tb1 = alloca(config->n_params * sizeof(struct blob_attr *));
315 blobmsg_parse(config->params, config->n_params, tb1,
316 blob_data(c1), blob_len(c1));
318 tb2 = alloca(config->n_params * sizeof(struct blob_attr *));
319 blobmsg_parse(config->params, config->n_params, tb2,
320 blob_data(c2), blob_len(c2));
322 return !config_diff(tb1, tb2, config, NULL);
326 config_check_equal(struct blob_attr *c1, struct blob_attr *c2,
327 const struct config_param_list *config)
331 if (!__config_check_equal(c1, c2, config))
334 for (i = 0; i < config->n_next; i++) {
335 if (!__config_check_equal(c1, c2, config->next[i]))
343 config_memdup(struct blob_attr *attr)
345 struct blob_attr *ret;
346 int size = blob_pad_len(attr);
352 memcpy(ret, attr, size);
356 static struct uci_package *
357 config_init_package(const char *config)
359 struct uci_context *ctx = uci_ctx;
360 struct uci_package *p = NULL;
363 ctx = uci_alloc_context();
367 uci_set_confdir(ctx, "./config");
368 uci_set_savedir(ctx, "./tmp");
371 p = uci_lookup_package(ctx, config);
376 if (uci_load(ctx, config, &p))
383 config_init_interfaces(void)
385 struct uci_element *e;
387 uci_foreach_element(&uci_network->sections, e) {
388 struct uci_section *s = uci_to_section(e);
390 if (!strcmp(s->type, "interface"))
391 config_parse_interface(s, false);
394 uci_foreach_element(&uci_network->sections, e) {
395 struct uci_section *s = uci_to_section(e);
397 if (!strcmp(s->type, "alias"))
398 config_parse_interface(s, true);
403 config_init_routes(void)
405 struct interface *iface;
406 struct uci_element *e;
408 vlist_for_each_element(&interfaces, iface, node)
409 interface_ip_update_start(&iface->config_ip);
411 uci_foreach_element(&uci_network->sections, e) {
412 struct uci_section *s = uci_to_section(e);
414 if (!strcmp(s->type, "route"))
415 config_parse_route(s, false);
416 else if (!strcmp(s->type, "route6"))
417 config_parse_route(s, true);
420 vlist_for_each_element(&interfaces, iface, node)
421 interface_ip_update_complete(&iface->config_ip);
425 config_init_all(void)
427 uci_network = config_init_package("network");
429 fprintf(stderr, "Failed to load network config\n");
433 vlist_update(&interfaces);
437 device_reset_config();
438 config_init_devices();
439 config_init_interfaces();
440 config_init_routes();
446 device_init_pending();
447 device_free_unused(NULL);
448 vlist_flush(&interfaces);
449 interface_start_pending();