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);
92 if ((cur = tb[ROUTE_MTU]) != NULL)
93 route->mtu = blobmsg_get_u32(cur);
95 vlist_add(&ip->route, &route->node, &route->mask);
103 addr_cmp(const void *k1, const void *k2, void *ptr)
105 return memcmp(k1, k2, sizeof(struct device_addr) -
106 offsetof(struct device_addr, mask));
110 route_cmp(const void *k1, const void *k2, void *ptr)
112 return memcmp(k1, k2, sizeof(struct device_route) -
113 offsetof(struct device_route, mask));
117 interface_update_proto_addr(struct vlist_tree *tree,
118 struct vlist_node *node_new,
119 struct vlist_node *node_old)
121 struct interface_ip_settings *ip;
122 struct interface *iface;
124 struct device_addr *a_new = NULL, *a_old = NULL;
127 ip = container_of(tree, struct interface_ip_settings, addr);
129 dev = iface->l3_dev->dev;
132 a_new = container_of(node_new, struct device_addr, node);
134 if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
138 uint32_t *a = (uint32_t *) &a_new->addr;
140 mask >>= a_new->mask;
141 a_new->broadcast = *a | mask;
146 a_old = container_of(node_old, struct device_addr, node);
148 if (a_new && a_old) {
151 if (a_old->flags != a_new->flags)
154 if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
155 a_new->broadcast != a_old->broadcast)
160 if (!(a_old->flags & DEVADDR_EXTERNAL) && a_old->enabled && !keep)
161 system_del_address(dev, a_old);
166 if (!(a_new->flags & DEVADDR_EXTERNAL) && !keep)
167 system_add_address(dev, a_new);
168 a_new->enabled = true;
173 enable_route(struct interface_ip_settings *ip, struct device_route *route)
175 if (ip->no_defaultroute && !route->mask)
182 interface_update_proto_route(struct vlist_tree *tree,
183 struct vlist_node *node_new,
184 struct vlist_node *node_old)
186 struct interface_ip_settings *ip;
187 struct interface *iface;
189 struct device_route *route_old, *route_new;
192 ip = container_of(tree, struct interface_ip_settings, route);
194 dev = iface->l3_dev->dev;
196 route_old = container_of(node_old, struct device_route, node);
197 route_new = container_of(node_new, struct device_route, node);
199 if (node_old && node_new)
200 keep = !memcmp(&route_old->nexthop, &route_new->nexthop, sizeof(route_old->nexthop));
203 if (!(route_old->flags & DEVADDR_EXTERNAL) && route_old->enabled && !keep)
204 system_del_route(dev, route_old);
209 bool _enabled = enable_route(ip, route_new);
211 if (!(route_new->flags & DEVADDR_EXTERNAL) && !keep && _enabled)
212 system_add_route(dev, route_new);
214 route_new->enabled = _enabled;
219 interface_add_dns_server(struct interface_ip_settings *ip, const char *str)
221 struct dns_server *s;
223 s = calloc(1, sizeof(*s));
225 if (inet_pton(s->af, str, &s->addr.in))
229 if (inet_pton(s->af, str, &s->addr.in))
236 D(INTERFACE, "Add IPv%c DNS server: %s\n",
237 s->af == AF_INET6 ? '6' : '4', str);
238 vlist_simple_add(&ip->dns_servers, &s->node);
242 interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list)
244 struct blob_attr *cur;
247 blobmsg_for_each_attr(cur, list, rem) {
248 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
251 if (!blobmsg_check_attr(cur, NULL))
254 interface_add_dns_server(ip, blobmsg_data(cur));
259 interface_add_dns_search_domain(struct interface_ip_settings *ip, const char *str)
261 struct dns_search_domain *s;
262 int len = strlen(str);
264 s = calloc(1, sizeof(*s) + len + 1);
268 D(INTERFACE, "Add DNS search domain: %s\n", str);
269 memcpy(s->name, str, len);
270 vlist_simple_add(&ip->dns_search, &s->node);
274 interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list)
276 struct blob_attr *cur;
279 blobmsg_for_each_attr(cur, list, rem) {
280 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
283 if (!blobmsg_check_attr(cur, NULL))
286 interface_add_dns_search_domain(ip, blobmsg_data(cur));
291 write_resolv_conf_entries(FILE *f, struct interface_ip_settings *ip)
293 struct dns_server *s;
294 struct dns_search_domain *d;
298 vlist_simple_for_each_element(&ip->dns_servers, s, node) {
299 str = inet_ntop(s->af, &s->addr, buf, sizeof(buf));
303 fprintf(f, "nameserver %s\n", str);
306 vlist_simple_for_each_element(&ip->dns_search, d, node) {
307 fprintf(f, "search %s\n", d->name);
312 interface_write_resolv_conf(void)
314 struct interface *iface;
315 char *path = alloca(strlen(resolv_conf) + 5);
318 sprintf(path, "%s.tmp", resolv_conf);
320 f = fopen(path, "w");
322 D(INTERFACE, "Failed to open %s for writing\n", path);
326 vlist_for_each_element(&interfaces, iface, node) {
327 if (iface->state != IFS_UP)
330 if (vlist_simple_empty(&iface->proto_ip.dns_search) &&
331 vlist_simple_empty(&iface->proto_ip.dns_servers) &&
332 vlist_simple_empty(&iface->config_ip.dns_search) &&
333 vlist_simple_empty(&iface->config_ip.dns_servers))
336 fprintf(f, "# Interface %s\n", iface->name);
337 write_resolv_conf_entries(f, &iface->config_ip);
338 write_resolv_conf_entries(f, &iface->proto_ip);
341 if (rename(path, resolv_conf) < 0) {
342 D(INTERFACE, "Failed to replace %s\n", resolv_conf);
347 void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled)
349 struct device_addr *addr;
350 struct device_route *route;
353 ip->enabled = enabled;
354 dev = ip->iface->l3_dev->dev;
358 vlist_for_each_element(&ip->addr, addr, node) {
359 if (addr->enabled == enabled)
363 system_add_address(dev, addr);
365 system_del_address(dev, addr);
366 addr->enabled = enabled;
369 vlist_for_each_element(&ip->route, route, node) {
370 bool _enabled = enabled;
372 if (!enable_route(ip, route))
375 if (route->enabled == _enabled)
379 system_add_route(dev, route);
381 system_del_route(dev, route);
382 route->enabled = _enabled;
387 interface_ip_update_start(struct interface_ip_settings *ip)
389 vlist_simple_update(&ip->dns_servers);
390 vlist_simple_update(&ip->dns_search);
391 vlist_update(&ip->route);
392 vlist_update(&ip->addr);
396 interface_ip_update_complete(struct interface_ip_settings *ip)
398 vlist_simple_flush(&ip->dns_servers);
399 vlist_simple_flush(&ip->dns_search);
400 vlist_flush(&ip->route);
401 vlist_flush(&ip->addr);
405 interface_ip_flush(struct interface_ip_settings *ip)
407 vlist_simple_flush_all(&ip->dns_servers);
408 vlist_simple_flush_all(&ip->dns_search);
409 vlist_flush_all(&ip->route);
410 vlist_flush_all(&ip->addr);
414 interface_ip_init(struct interface_ip_settings *ip, struct interface *iface)
418 vlist_simple_init(&ip->dns_search, struct dns_search_domain, node);
419 vlist_simple_init(&ip->dns_servers, struct dns_server, node);
420 vlist_init(&ip->route, route_cmp, interface_update_proto_route);
421 vlist_init(&ip->addr, addr_cmp, interface_update_proto_addr);