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 bool 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
);
65 static void uci_array_to_blob(struct blob_buf
*b
, struct uci_option
*o
,
66 enum blobmsg_type type
)
68 struct uci_element
*e
;
69 char *str
, *next
, *word
;
71 if (o
->type
== UCI_TYPE_LIST
) {
72 uci_foreach_element(&o
->v
.list
, e
) {
73 uci_attr_to_blob(b
, e
->name
, NULL
, type
);
78 str
= strdup(o
->v
.string
);
81 while ((word
= strsep(&next
, " \t")) != NULL
) {
85 uci_attr_to_blob(b
, word
, NULL
, type
);
91 static int __uci_to_blob(struct blob_buf
*b
, struct uci_section
*s
,
92 const struct config_param_list
*p
)
94 const struct blobmsg_policy
*attr
= NULL
;
95 struct uci_element
*e
;
100 uci_foreach_element(&s
->options
, e
) {
101 for (i
= 0; i
< p
->n_params
; i
++) {
102 attr
= &p
->params
[i
];
103 if (!strcmp(attr
->name
, e
->name
))
107 if (i
== p
->n_params
)
110 o
= uci_to_option(e
);
112 if (attr
->type
== BLOBMSG_TYPE_ARRAY
) {
116 array
= blobmsg_open_array(b
, attr
->name
);
117 uci_array_to_blob(b
, o
, p
->info
[i
].type
);
118 blobmsg_close_array(b
, array
);
123 if (o
->type
== UCI_TYPE_LIST
)
126 ret
+= uci_attr_to_blob(b
, o
->v
.string
, attr
->name
, attr
->type
);
132 static int uci_to_blob(struct blob_buf
*b
, struct uci_section
*s
,
133 const struct config_param_list
*p
)
138 ret
+= __uci_to_blob(b
, s
, p
);
139 for (i
= 0; i
< p
->n_next
; i
++)
140 ret
+= uci_to_blob(b
, s
, p
->next
[i
]);
146 config_parse_bridge_interface(struct uci_section
*s
)
150 name
= alloca(strlen(s
->e
.name
) + 4);
151 sprintf(name
, "br-%s", s
->e
.name
);
152 blobmsg_add_string(&b
, "name", name
);
154 uci_to_blob(&b
, s
, bridge_device_type
.config_params
);
155 if (!device_create(name
, &bridge_device_type
, b
.head
)) {
156 D(INTERFACE
, "Failed to create bridge for interface '%s'\n", s
->e
.name
);
160 blob_buf_init(&b
, 0);
161 blobmsg_add_string(&b
, "ifname", name
);
166 config_parse_interface(struct uci_section
*s
, bool alias
)
168 struct interface
*iface
;
169 const char *type
= NULL
;
170 struct blob_attr
*config
;
174 blob_buf_init(&b
, 0);
177 type
= uci_lookup_option_string(uci_ctx
, s
, "type");
178 if (type
&& !strcmp(type
, "bridge")) {
179 if (config_parse_bridge_interface(s
))
185 uci_to_blob(&b
, s
, &interface_attr_list
);
186 iface
= calloc(1, sizeof(*iface
));
190 interface_init(iface
, s
->e
.name
, b
.head
);
192 if (iface
->proto_handler
&& iface
->proto_handler
->config_params
)
193 uci_to_blob(&b
, s
, iface
->proto_handler
->config_params
);
195 if (!bridge
&& uci_to_blob(&b
, s
, simple_device_type
.config_params
))
196 iface
->device_config
= true;
198 config
= malloc(blob_pad_len(b
.head
));
202 memcpy(config
, b
.head
, blob_pad_len(b
.head
));
205 if (!interface_add_alias(iface
, config
))
206 goto error_free_config
;
208 interface_add(iface
, config
);
212 * need to look up the interface name again, in case of config update,
213 * the pointer will have changed
215 iface
= vlist_find(&interfaces
, s
->e
.name
, iface
, node
);
219 dev
= iface
->main_dev
.dev
;
220 if (!dev
|| !dev
->default_config
)
223 blob_buf_init(&b
, 0);
224 uci_to_blob(&b
, s
, dev
->type
->config_params
);
225 if (blob_len(b
.head
) == 0)
228 device_set_config(dev
, dev
->type
, b
.head
);
237 config_parse_route(struct uci_section
*s
, bool v6
)
241 blob_buf_init(&b
, 0);
242 route
= blobmsg_open_array(&b
, "route");
243 uci_to_blob(&b
, s
, &route_attr_list
);
244 blobmsg_close_array(&b
, route
);
245 interface_ip_add_route(NULL
, blob_data(b
.head
), v6
);
249 config_init_devices(void)
251 struct uci_element
*e
;
253 uci_foreach_element(&uci_network
->sections
, e
) {
254 struct uci_section
*s
= uci_to_section(e
);
255 const struct device_type
*devtype
= NULL
;
256 const char *type
, *name
;
258 if (strcmp(s
->type
, "device") != 0)
261 name
= uci_lookup_option_string(uci_ctx
, s
, "name");
265 type
= uci_lookup_option_string(uci_ctx
, s
, "type");
267 if (!strcmp(type
, "bridge"))
268 devtype
= &bridge_device_type
;
269 else if (!strcmp(type
, "tunnel"))
270 devtype
= &tunnel_device_type
;
274 devtype
= &simple_device_type
;
276 blob_buf_init(&b
, 0);
277 uci_to_blob(&b
, s
, devtype
->config_params
);
278 device_create(name
, devtype
, b
.head
);
283 config_diff(struct blob_attr
**tb1
, struct blob_attr
**tb2
,
284 const struct config_param_list
*config
, unsigned long *diff
)
289 for (i
= 0; i
< config
->n_params
; i
++) {
290 if (!tb1
[i
] && !tb2
[i
])
293 if (!!tb1
[i
] != !!tb2
[i
])
296 if (blob_len(tb1
[i
]) != blob_len(tb2
[i
]))
299 if (memcmp(tb1
[i
], tb2
[i
], blob_raw_len(tb1
[i
])) != 0)
317 __config_check_equal(struct blob_attr
*c1
, struct blob_attr
*c2
,
318 const struct config_param_list
*config
)
320 struct blob_attr
**tb1
, **tb2
;
328 tb1
= alloca(config
->n_params
* sizeof(struct blob_attr
*));
329 blobmsg_parse(config
->params
, config
->n_params
, tb1
,
330 blob_data(c1
), blob_len(c1
));
332 tb2
= alloca(config
->n_params
* sizeof(struct blob_attr
*));
333 blobmsg_parse(config
->params
, config
->n_params
, tb2
,
334 blob_data(c2
), blob_len(c2
));
336 return !config_diff(tb1
, tb2
, config
, NULL
);
340 config_check_equal(struct blob_attr
*c1
, struct blob_attr
*c2
,
341 const struct config_param_list
*config
)
345 if (!__config_check_equal(c1
, c2
, config
))
348 for (i
= 0; i
< config
->n_next
; i
++) {
349 if (!__config_check_equal(c1
, c2
, config
->next
[i
]))
357 config_memdup(struct blob_attr
*attr
)
359 struct blob_attr
*ret
;
360 int size
= blob_pad_len(attr
);
366 memcpy(ret
, attr
, size
);
370 static struct uci_package
*
371 config_init_package(const char *config
)
373 struct uci_context
*ctx
= uci_ctx
;
374 struct uci_package
*p
= NULL
;
377 ctx
= uci_alloc_context();
381 uci_set_confdir(ctx
, "./config");
382 uci_set_savedir(ctx
, "./tmp");
385 p
= uci_lookup_package(ctx
, config
);
390 if (uci_load(ctx
, config
, &p
))
397 config_init_interfaces(void)
399 struct uci_element
*e
;
401 uci_foreach_element(&uci_network
->sections
, e
) {
402 struct uci_section
*s
= uci_to_section(e
);
404 if (!strcmp(s
->type
, "interface"))
405 config_parse_interface(s
, false);
408 uci_foreach_element(&uci_network
->sections
, e
) {
409 struct uci_section
*s
= uci_to_section(e
);
411 if (!strcmp(s
->type
, "alias"))
412 config_parse_interface(s
, true);
417 config_init_routes(void)
419 struct interface
*iface
;
420 struct uci_element
*e
;
422 vlist_for_each_element(&interfaces
, iface
, node
)
423 interface_ip_update_start(&iface
->config_ip
);
425 uci_foreach_element(&uci_network
->sections
, e
) {
426 struct uci_section
*s
= uci_to_section(e
);
428 if (!strcmp(s
->type
, "route"))
429 config_parse_route(s
, false);
430 else if (!strcmp(s
->type
, "route6"))
431 config_parse_route(s
, true);
434 vlist_for_each_element(&interfaces
, iface
, node
)
435 interface_ip_update_complete(&iface
->config_ip
);
439 config_init_all(void)
441 uci_network
= config_init_package("network");
443 fprintf(stderr
, "Failed to load network config\n");
447 vlist_update(&interfaces
);
451 device_reset_config();
452 config_init_devices();
453 config_init_interfaces();
454 config_init_routes();
460 device_init_pending();
461 device_free_unused(NULL
);
462 vlist_flush(&interfaces
);
463 interface_start_pending();