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->mask = v6 ? 128 : 32;
68 if ((cur = tb[ROUTE_MASK]) != NULL) {
69 route->mask = parse_netmask_string(blobmsg_data(cur), v6);
70 if (route->mask > (v6 ? 128 : 32))
74 if ((cur = tb[ROUTE_TARGET]) != NULL) {
75 if (!inet_pton(af, blobmsg_data(cur), &route->addr)) {
76 DPRINTF("Failed to parse route target: %s\n", (char *) blobmsg_data(cur));
81 if ((cur = tb[ROUTE_GATEWAY]) != NULL) {
82 if (!inet_pton(af, blobmsg_data(cur), &route->nexthop)) {
83 DPRINTF("Failed to parse route gateway: %s\n", (char *) blobmsg_data(cur));
87 route->flags |= DEVADDR_DEVICE;
90 if ((cur = tb[ROUTE_METRIC]) != NULL)
91 route->metric = blobmsg_get_u32(cur);
93 if ((cur = tb[ROUTE_MTU]) != NULL)
94 route->mtu = blobmsg_get_u32(cur);
96 vlist_add(&ip->route, &route->node, &route->mask);
104 addr_cmp(const void *k1, const void *k2, void *ptr)
106 return memcmp(k1, k2, sizeof(struct device_addr) -
107 offsetof(struct device_addr, mask));
111 route_cmp(const void *k1, const void *k2, void *ptr)
113 return memcmp(k1, k2, sizeof(struct device_route) -
114 offsetof(struct device_route, mask));
118 interface_update_proto_addr(struct vlist_tree *tree,
119 struct vlist_node *node_new,
120 struct vlist_node *node_old)
122 struct interface_ip_settings *ip;
123 struct interface *iface;
125 struct device_addr *a_new = NULL, *a_old = NULL;
128 ip = container_of(tree, struct interface_ip_settings, addr);
130 dev = iface->l3_dev->dev;
133 a_new = container_of(node_new, struct device_addr, node);
135 if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
139 uint32_t *a = (uint32_t *) &a_new->addr;
141 mask >>= a_new->mask;
142 a_new->broadcast = *a | mask;
147 a_old = container_of(node_old, struct device_addr, node);
149 if (a_new && a_old) {
152 if (a_old->flags != a_new->flags)
155 if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
156 a_new->broadcast != a_old->broadcast)
161 if (!(a_old->flags & DEVADDR_EXTERNAL) && a_old->enabled && !keep)
162 system_del_address(dev, a_old);
167 if (!(a_new->flags & DEVADDR_EXTERNAL) && !keep)
168 system_add_address(dev, a_new);
169 a_new->enabled = true;
174 enable_route(struct interface_ip_settings *ip, struct device_route *route)
176 if (ip->no_defaultroute && !route->mask)
183 interface_update_proto_route(struct vlist_tree *tree,
184 struct vlist_node *node_new,
185 struct vlist_node *node_old)
187 struct interface_ip_settings *ip;
188 struct interface *iface;
190 struct device_route *route_old, *route_new;
193 ip = container_of(tree, struct interface_ip_settings, route);
195 dev = iface->l3_dev->dev;
197 route_old = container_of(node_old, struct device_route, node);
198 route_new = container_of(node_new, struct device_route, node);
200 if (node_old && node_new)
201 keep = !memcmp(&route_old->nexthop, &route_new->nexthop, sizeof(route_old->nexthop));
204 if (!(route_old->flags & DEVADDR_EXTERNAL) && route_old->enabled && !keep)
205 system_del_route(dev, route_old);
210 bool _enabled = enable_route(ip, route_new);
212 if (!(route_new->flags & DEVADDR_EXTERNAL) && !keep && _enabled)
213 system_add_route(dev, route_new);
215 route_new->enabled = _enabled;
220 interface_add_dns_server(struct interface_ip_settings *ip, const char *str)
222 struct dns_server *s;
224 s = calloc(1, sizeof(*s));
226 if (inet_pton(s->af, str, &s->addr.in))
230 if (inet_pton(s->af, str, &s->addr.in))
237 D(INTERFACE, "Add IPv%c DNS server: %s\n",
238 s->af == AF_INET6 ? '6' : '4', str);
239 vlist_simple_add(&ip->dns_servers, &s->node);
243 interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list)
245 struct blob_attr *cur;
248 blobmsg_for_each_attr(cur, list, rem) {
249 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
252 if (!blobmsg_check_attr(cur, NULL))
255 interface_add_dns_server(ip, blobmsg_data(cur));
260 interface_add_dns_search_domain(struct interface_ip_settings *ip, const char *str)
262 struct dns_search_domain *s;
263 int len = strlen(str);
265 s = calloc(1, sizeof(*s) + len + 1);
269 D(INTERFACE, "Add DNS search domain: %s\n", str);
270 memcpy(s->name, str, len);
271 vlist_simple_add(&ip->dns_search, &s->node);
275 interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list)
277 struct blob_attr *cur;
280 blobmsg_for_each_attr(cur, list, rem) {
281 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
284 if (!blobmsg_check_attr(cur, NULL))
287 interface_add_dns_search_domain(ip, blobmsg_data(cur));
292 write_resolv_conf_entries(FILE *f, struct interface_ip_settings *ip)
294 struct dns_server *s;
295 struct dns_search_domain *d;
299 vlist_simple_for_each_element(&ip->dns_servers, s, node) {
300 str = inet_ntop(s->af, &s->addr, buf, sizeof(buf));
304 fprintf(f, "nameserver %s\n", str);
307 vlist_simple_for_each_element(&ip->dns_search, d, node) {
308 fprintf(f, "search %s\n", d->name);
313 interface_write_resolv_conf(void)
315 struct interface *iface;
316 char *path = alloca(strlen(resolv_conf) + 5);
319 sprintf(path, "%s.tmp", resolv_conf);
321 f = fopen(path, "w");
323 D(INTERFACE, "Failed to open %s for writing\n", path);
327 vlist_for_each_element(&interfaces, iface, node) {
328 if (iface->state != IFS_UP)
331 if (vlist_simple_empty(&iface->proto_ip.dns_search) &&
332 vlist_simple_empty(&iface->proto_ip.dns_servers) &&
333 vlist_simple_empty(&iface->config_ip.dns_search) &&
334 vlist_simple_empty(&iface->config_ip.dns_servers))
337 fprintf(f, "# Interface %s\n", iface->name);
338 write_resolv_conf_entries(f, &iface->config_ip);
339 write_resolv_conf_entries(f, &iface->proto_ip);
342 if (rename(path, resolv_conf) < 0) {
343 D(INTERFACE, "Failed to replace %s\n", resolv_conf);
348 void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled)
350 struct device_addr *addr;
351 struct device_route *route;
354 ip->enabled = enabled;
355 dev = ip->iface->l3_dev->dev;
359 vlist_for_each_element(&ip->addr, addr, node) {
360 if (addr->enabled == enabled)
364 system_add_address(dev, addr);
366 system_del_address(dev, addr);
367 addr->enabled = enabled;
370 vlist_for_each_element(&ip->route, route, node) {
371 bool _enabled = enabled;
373 if (!enable_route(ip, route))
376 if (route->enabled == _enabled)
380 system_add_route(dev, route);
382 system_del_route(dev, route);
383 route->enabled = _enabled;
388 interface_ip_update_start(struct interface_ip_settings *ip)
390 vlist_simple_update(&ip->dns_servers);
391 vlist_simple_update(&ip->dns_search);
392 vlist_update(&ip->route);
393 vlist_update(&ip->addr);
397 interface_ip_update_complete(struct interface_ip_settings *ip)
399 vlist_simple_flush(&ip->dns_servers);
400 vlist_simple_flush(&ip->dns_search);
401 vlist_flush(&ip->route);
402 vlist_flush(&ip->addr);
406 interface_ip_flush(struct interface_ip_settings *ip)
408 vlist_simple_flush_all(&ip->dns_servers);
409 vlist_simple_flush_all(&ip->dns_search);
410 vlist_flush_all(&ip->route);
411 vlist_flush_all(&ip->addr);
415 interface_ip_init(struct interface_ip_settings *ip, struct interface *iface)
419 vlist_simple_init(&ip->dns_search, struct dns_search_domain, node);
420 vlist_simple_init(&ip->dns_servers, struct dns_server, node);
421 vlist_init(&ip->route, route_cmp, interface_update_proto_route);
422 vlist_init(&ip->addr, addr_cmp, interface_update_proto_addr);