10 #include "interface.h"
11 #include "interface-ip.h"
26 static const struct blobmsg_policy route_attr[__ROUTE_MAX] = {
27 [ROUTE_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
28 [ROUTE_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
29 [ROUTE_MASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING },
30 [ROUTE_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
31 [ROUTE_METRIC] = { .name = "metric", .type = BLOBMSG_TYPE_INT32 },
32 [ROUTE_MTU] = { .name = "mtu", .type = BLOBMSG_TYPE_INT32 },
35 const struct config_param_list route_attr_list = {
36 .n_params = __ROUTE_MAX,
41 interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6)
43 struct interface_ip_settings *ip;
44 struct blob_attr *tb[__ROUTE_MAX], *cur;
45 struct device_route *route;
46 int af = v6 ? AF_INET6 : AF_INET;
48 blobmsg_parse(route_attr, __ROUTE_MAX, tb, blobmsg_data(attr), blobmsg_data_len(attr));
51 if ((cur = tb[ROUTE_INTERFACE]) == NULL)
54 iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
58 ip = &iface->config_ip;
60 ip = &iface->proto_ip;
63 route = calloc(1, sizeof(*route));
67 route->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
68 route->mask = v6 ? 128 : 32;
69 if ((cur = tb[ROUTE_MASK]) != NULL) {
70 route->mask = parse_netmask_string(blobmsg_data(cur), v6);
71 if (route->mask > (v6 ? 128 : 32))
75 if ((cur = tb[ROUTE_TARGET]) != NULL) {
76 if (!inet_pton(af, blobmsg_data(cur), &route->addr)) {
77 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur));
82 if ((cur = tb[ROUTE_GATEWAY]) != NULL) {
83 if (!inet_pton(af, blobmsg_data(cur), &route->nexthop)) {
84 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur));
89 if ((cur = tb[ROUTE_METRIC]) != NULL) {
90 route->metric = blobmsg_get_u32(cur);
91 route->flags |= DEVROUTE_METRIC;
94 if ((cur = tb[ROUTE_MTU]) != NULL)
95 route->mtu = blobmsg_get_u32(cur);
97 vlist_add(&ip->route, &route->node, &route->mask);
105 addr_cmp(const void *k1, const void *k2, void *ptr)
107 return memcmp(k1, k2, sizeof(struct device_addr) -
108 offsetof(struct device_addr, mask));
112 route_cmp(const void *k1, const void *k2, void *ptr)
114 return memcmp(k1, k2, sizeof(struct device_route) -
115 offsetof(struct device_route, mask));
119 interface_update_proto_addr(struct vlist_tree *tree,
120 struct vlist_node *node_new,
121 struct vlist_node *node_old)
123 struct interface_ip_settings *ip;
124 struct interface *iface;
126 struct device_addr *a_new = NULL, *a_old = NULL;
129 ip = container_of(tree, struct interface_ip_settings, addr);
131 dev = iface->l3_dev.dev;
134 a_new = container_of(node_new, struct device_addr, node);
136 if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
140 uint32_t *a = (uint32_t *) &a_new->addr;
142 mask >>= a_new->mask;
143 a_new->broadcast = *a | mask;
148 a_old = container_of(node_old, struct device_addr, node);
150 if (a_new && a_old) {
153 if (a_old->flags != a_new->flags)
156 if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
157 a_new->broadcast != a_old->broadcast)
162 if (!(a_old->flags & DEVADDR_EXTERNAL) && a_old->enabled && !keep)
163 system_del_address(dev, a_old);
168 if (!(a_new->flags & DEVADDR_EXTERNAL) && !keep)
169 system_add_address(dev, a_new);
170 a_new->enabled = true;
175 enable_route(struct interface_ip_settings *ip, struct device_route *route)
177 if (ip->no_defaultroute && !route->mask)
184 interface_update_proto_route(struct vlist_tree *tree,
185 struct vlist_node *node_new,
186 struct vlist_node *node_old)
188 struct interface_ip_settings *ip;
189 struct interface *iface;
191 struct device_route *route_old, *route_new;
194 ip = container_of(tree, struct interface_ip_settings, route);
196 dev = iface->l3_dev.dev;
198 route_old = container_of(node_old, struct device_route, node);
199 route_new = container_of(node_new, struct device_route, node);
201 if (node_old && node_new)
202 keep = !memcmp(&route_old->nexthop, &route_new->nexthop, sizeof(route_old->nexthop));
205 if (!(route_old->flags & DEVADDR_EXTERNAL) && route_old->enabled && !keep)
206 system_del_route(dev, route_old);
211 bool _enabled = enable_route(ip, route_new);
213 if (!(route_new->flags & DEVADDR_EXTERNAL) && !keep && _enabled)
214 system_add_route(dev, route_new);
216 route_new->enabled = _enabled;
221 interface_add_dns_server(struct interface_ip_settings *ip, const char *str)
223 struct dns_server *s;
225 s = calloc(1, sizeof(*s));
227 if (inet_pton(s->af, str, &s->addr.in))
231 if (inet_pton(s->af, str, &s->addr.in))
238 D(INTERFACE, "Add IPv%c DNS server: %s\n",
239 s->af == AF_INET6 ? '6' : '4', str);
240 vlist_simple_add(&ip->dns_servers, &s->node);
244 interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list)
246 struct blob_attr *cur;
249 blobmsg_for_each_attr(cur, list, rem) {
250 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
253 if (!blobmsg_check_attr(cur, NULL))
256 interface_add_dns_server(ip, blobmsg_data(cur));
261 interface_add_dns_search_domain(struct interface_ip_settings *ip, const char *str)
263 struct dns_search_domain *s;
264 int len = strlen(str);
266 s = calloc(1, sizeof(*s) + len + 1);
270 D(INTERFACE, "Add DNS search domain: %s\n", str);
271 memcpy(s->name, str, len);
272 vlist_simple_add(&ip->dns_search, &s->node);
276 interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list)
278 struct blob_attr *cur;
281 blobmsg_for_each_attr(cur, list, rem) {
282 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
285 if (!blobmsg_check_attr(cur, NULL))
288 interface_add_dns_search_domain(ip, blobmsg_data(cur));
293 write_resolv_conf_entries(FILE *f, struct interface_ip_settings *ip)
295 struct dns_server *s;
296 struct dns_search_domain *d;
300 vlist_simple_for_each_element(&ip->dns_servers, s, node) {
301 str = inet_ntop(s->af, &s->addr, buf, sizeof(buf));
305 fprintf(f, "nameserver %s\n", str);
308 vlist_simple_for_each_element(&ip->dns_search, d, node) {
309 fprintf(f, "search %s\n", d->name);
314 interface_write_resolv_conf(void)
316 struct interface *iface;
317 char *path = alloca(strlen(resolv_conf) + 5);
320 sprintf(path, "%s.tmp", resolv_conf);
322 f = fopen(path, "w");
324 D(INTERFACE, "Failed to open %s for writing\n", path);
328 vlist_for_each_element(&interfaces, iface, node) {
329 if (iface->state != IFS_UP)
332 if (vlist_simple_empty(&iface->proto_ip.dns_search) &&
333 vlist_simple_empty(&iface->proto_ip.dns_servers) &&
334 vlist_simple_empty(&iface->config_ip.dns_search) &&
335 vlist_simple_empty(&iface->config_ip.dns_servers))
338 fprintf(f, "# Interface %s\n", iface->name);
339 write_resolv_conf_entries(f, &iface->config_ip);
340 write_resolv_conf_entries(f, &iface->proto_ip);
343 if (rename(path, resolv_conf) < 0) {
344 D(INTERFACE, "Failed to replace %s\n", resolv_conf);
349 void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled)
351 struct device_addr *addr;
352 struct device_route *route;
355 ip->enabled = enabled;
356 dev = ip->iface->l3_dev.dev;
360 vlist_for_each_element(&ip->addr, addr, node) {
361 if (addr->enabled == enabled)
365 system_add_address(dev, addr);
367 system_del_address(dev, addr);
368 addr->enabled = enabled;
371 vlist_for_each_element(&ip->route, route, node) {
372 bool _enabled = enabled;
374 if (!enable_route(ip, route))
377 if (route->enabled == _enabled)
381 if (!(route->flags & DEVROUTE_METRIC))
382 route->metric = ip->iface->metric;
384 system_add_route(dev, route);
386 system_del_route(dev, route);
387 route->enabled = _enabled;
392 interface_ip_update_start(struct interface_ip_settings *ip)
394 vlist_simple_update(&ip->dns_servers);
395 vlist_simple_update(&ip->dns_search);
396 vlist_update(&ip->route);
397 vlist_update(&ip->addr);
401 interface_ip_update_complete(struct interface_ip_settings *ip)
403 vlist_simple_flush(&ip->dns_servers);
404 vlist_simple_flush(&ip->dns_search);
405 vlist_flush(&ip->route);
406 vlist_flush(&ip->addr);
410 interface_ip_flush(struct interface_ip_settings *ip)
412 vlist_simple_flush_all(&ip->dns_servers);
413 vlist_simple_flush_all(&ip->dns_search);
414 vlist_flush_all(&ip->route);
415 vlist_flush_all(&ip->addr);
419 interface_ip_init(struct interface_ip_settings *ip, struct interface *iface)
423 vlist_simple_init(&ip->dns_search, struct dns_search_domain, node);
424 vlist_simple_init(&ip->dns_servers, struct dns_server, node);
425 vlist_init(&ip->route, route_cmp, interface_update_proto_route);
426 vlist_init(&ip->addr, addr_cmp, interface_update_proto_addr);