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"
27 bool config_init
= false;
29 static struct uci_context
*uci_ctx
;
30 static struct uci_package
*uci_network
;
31 static struct blob_buf b
;
33 static bool uci_attr_to_blob(struct blob_buf
*b
, const char *str
,
34 const char *name
, enum blobmsg_type type
)
40 case BLOBMSG_TYPE_STRING
:
41 blobmsg_add_string(b
, name
, str
);
43 case BLOBMSG_TYPE_BOOL
:
44 if (!strcmp(str
, "true") || !strcmp(str
, "1"))
46 else if (!strcmp(str
, "false") || !strcmp(str
, "0"))
51 blobmsg_add_u8(b
, name
, intval
);
53 case BLOBMSG_TYPE_INT32
:
54 intval
= strtol(str
, &err
, 0);
58 blobmsg_add_u32(b
, name
, intval
);
66 static void uci_array_to_blob(struct blob_buf
*b
, struct uci_option
*o
,
67 enum blobmsg_type type
)
69 struct uci_element
*e
;
70 char *str
, *next
, *word
;
72 if (o
->type
== UCI_TYPE_LIST
) {
73 uci_foreach_element(&o
->v
.list
, e
) {
74 uci_attr_to_blob(b
, e
->name
, NULL
, type
);
79 str
= strdup(o
->v
.string
);
82 while ((word
= strsep(&next
, " \t")) != NULL
) {
86 uci_attr_to_blob(b
, word
, NULL
, type
);
92 static int __uci_to_blob(struct blob_buf
*b
, struct uci_section
*s
,
93 const struct config_param_list
*p
)
95 const struct blobmsg_policy
*attr
= NULL
;
96 struct uci_element
*e
;
101 uci_foreach_element(&s
->options
, e
) {
102 for (i
= 0; i
< p
->n_params
; i
++) {
103 attr
= &p
->params
[i
];
104 if (!strcmp(attr
->name
, e
->name
))
108 if (i
== p
->n_params
)
111 o
= uci_to_option(e
);
113 if (attr
->type
== BLOBMSG_TYPE_ARRAY
) {
117 array
= blobmsg_open_array(b
, attr
->name
);
118 uci_array_to_blob(b
, o
, p
->info
[i
].type
);
119 blobmsg_close_array(b
, array
);
124 if (o
->type
== UCI_TYPE_LIST
)
127 ret
+= uci_attr_to_blob(b
, o
->v
.string
, attr
->name
, attr
->type
);
133 static int uci_to_blob(struct blob_buf
*b
, struct uci_section
*s
,
134 const struct config_param_list
*p
)
139 ret
+= __uci_to_blob(b
, s
, p
);
140 for (i
= 0; i
< p
->n_next
; i
++)
141 ret
+= uci_to_blob(b
, s
, p
->next
[i
]);
147 config_parse_bridge_interface(struct uci_section
*s
)
151 name
= alloca(strlen(s
->e
.name
) + 4);
152 sprintf(name
, "br-%s", s
->e
.name
);
153 blobmsg_add_string(&b
, "name", name
);
155 uci_to_blob(&b
, s
, bridge_device_type
.config_params
);
156 if (!device_create(name
, &bridge_device_type
, b
.head
)) {
157 D(INTERFACE
, "Failed to create bridge for interface '%s'\n", s
->e
.name
);
161 blob_buf_init(&b
, 0);
162 blobmsg_add_string(&b
, "ifname", name
);
167 config_parse_interface(struct uci_section
*s
, bool alias
)
169 struct interface
*iface
;
170 const char *type
= NULL
;
171 struct blob_attr
*config
;
175 blob_buf_init(&b
, 0);
178 type
= uci_lookup_option_string(uci_ctx
, s
, "type");
179 if (type
&& !strcmp(type
, "bridge")) {
180 if (config_parse_bridge_interface(s
))
186 uci_to_blob(&b
, s
, &interface_attr_list
);
187 iface
= calloc(1, sizeof(*iface
));
191 interface_init(iface
, s
->e
.name
, b
.head
);
193 if (iface
->proto_handler
&& iface
->proto_handler
->config_params
)
194 uci_to_blob(&b
, s
, iface
->proto_handler
->config_params
);
196 if (!bridge
&& uci_to_blob(&b
, s
, simple_device_type
.config_params
))
197 iface
->device_config
= true;
199 config
= malloc(blob_pad_len(b
.head
));
203 memcpy(config
, b
.head
, blob_pad_len(b
.head
));
206 if (!interface_add_alias(iface
, config
))
207 goto error_free_config
;
209 interface_add(iface
, config
);
213 * need to look up the interface name again, in case of config update,
214 * the pointer will have changed
216 iface
= vlist_find(&interfaces
, s
->e
.name
, iface
, node
);
220 dev
= iface
->main_dev
.dev
;
221 if (!dev
|| !dev
->default_config
)
224 blob_buf_init(&b
, 0);
225 uci_to_blob(&b
, s
, dev
->type
->config_params
);
226 if (blob_len(b
.head
) == 0)
229 device_set_config(dev
, dev
->type
, b
.head
);
238 config_parse_route(struct uci_section
*s
, bool v6
)
242 blob_buf_init(&b
, 0);
243 route
= blobmsg_open_array(&b
, "route");
244 uci_to_blob(&b
, s
, &route_attr_list
);
245 blobmsg_close_array(&b
, route
);
246 interface_ip_add_route(NULL
, blob_data(b
.head
), v6
);
250 config_parse_rule(struct uci_section
*s
, bool v6
)
254 blob_buf_init(&b
, 0);
255 rule
= blobmsg_open_array(&b
, "rule");
256 uci_to_blob(&b
, s
, &rule_attr_list
);
257 blobmsg_close_array(&b
, rule
);
258 iprule_add(blob_data(b
.head
), v6
);
262 config_init_devices(void)
264 struct uci_element
*e
;
266 uci_foreach_element(&uci_network
->sections
, e
) {
267 struct uci_section
*s
= uci_to_section(e
);
268 const struct device_type
*devtype
= NULL
;
269 const char *type
, *name
;
271 if (strcmp(s
->type
, "device") != 0)
274 name
= uci_lookup_option_string(uci_ctx
, s
, "name");
278 type
= uci_lookup_option_string(uci_ctx
, s
, "type");
280 if (!strcmp(type
, "bridge"))
281 devtype
= &bridge_device_type
;
282 else if (!strcmp(type
, "tunnel"))
283 devtype
= &tunnel_device_type
;
287 devtype
= &simple_device_type
;
289 blob_buf_init(&b
, 0);
290 uci_to_blob(&b
, s
, devtype
->config_params
);
291 device_create(name
, devtype
, b
.head
);
296 config_diff(struct blob_attr
**tb1
, struct blob_attr
**tb2
,
297 const struct config_param_list
*config
, unsigned long *diff
)
302 for (i
= 0; i
< config
->n_params
; i
++) {
303 if (!tb1
[i
] && !tb2
[i
])
306 if (!!tb1
[i
] != !!tb2
[i
])
309 if (blob_len(tb1
[i
]) != blob_len(tb2
[i
]))
312 if (memcmp(tb1
[i
], tb2
[i
], blob_raw_len(tb1
[i
])) != 0)
330 __config_check_equal(struct blob_attr
*c1
, struct blob_attr
*c2
,
331 const struct config_param_list
*config
)
333 struct blob_attr
**tb1
, **tb2
;
341 tb1
= alloca(config
->n_params
* sizeof(struct blob_attr
*));
342 blobmsg_parse(config
->params
, config
->n_params
, tb1
,
343 blob_data(c1
), blob_len(c1
));
345 tb2
= alloca(config
->n_params
* sizeof(struct blob_attr
*));
346 blobmsg_parse(config
->params
, config
->n_params
, tb2
,
347 blob_data(c2
), blob_len(c2
));
349 return !config_diff(tb1
, tb2
, config
, NULL
);
353 config_check_equal(struct blob_attr
*c1
, struct blob_attr
*c2
,
354 const struct config_param_list
*config
)
358 if (!__config_check_equal(c1
, c2
, config
))
361 for (i
= 0; i
< config
->n_next
; i
++) {
362 if (!__config_check_equal(c1
, c2
, config
->next
[i
]))
370 config_memdup(struct blob_attr
*attr
)
372 struct blob_attr
*ret
;
373 int size
= blob_pad_len(attr
);
379 memcpy(ret
, attr
, size
);
383 static struct uci_package
*
384 config_init_package(const char *config
)
386 struct uci_context
*ctx
= uci_ctx
;
387 struct uci_package
*p
= NULL
;
390 ctx
= uci_alloc_context();
394 uci_set_confdir(ctx
, "./config");
395 uci_set_savedir(ctx
, "./tmp");
398 p
= uci_lookup_package(ctx
, config
);
403 if (uci_load(ctx
, config
, &p
))
410 config_init_interfaces(void)
412 struct uci_element
*e
;
414 uci_foreach_element(&uci_network
->sections
, e
) {
415 struct uci_section
*s
= uci_to_section(e
);
417 if (!strcmp(s
->type
, "interface"))
418 config_parse_interface(s
, false);
421 uci_foreach_element(&uci_network
->sections
, e
) {
422 struct uci_section
*s
= uci_to_section(e
);
424 if (!strcmp(s
->type
, "alias"))
425 config_parse_interface(s
, true);
430 config_init_routes(void)
432 struct interface
*iface
;
433 struct uci_element
*e
;
435 vlist_for_each_element(&interfaces
, iface
, node
)
436 interface_ip_update_start(&iface
->config_ip
);
438 uci_foreach_element(&uci_network
->sections
, e
) {
439 struct uci_section
*s
= uci_to_section(e
);
441 if (!strcmp(s
->type
, "route"))
442 config_parse_route(s
, false);
443 else if (!strcmp(s
->type
, "route6"))
444 config_parse_route(s
, true);
447 vlist_for_each_element(&interfaces
, iface
, node
)
448 interface_ip_update_complete(&iface
->config_ip
);
452 config_init_rules(void)
454 struct uci_element
*e
;
456 iprule_update_start();
458 uci_foreach_element(&uci_network
->sections
, e
) {
459 struct uci_section
*s
= uci_to_section(e
);
461 if (!strcmp(s
->type
, "rule"))
462 config_parse_rule(s
, false);
463 else if (!strcmp(s
->type
, "rule6"))
464 config_parse_rule(s
, true);
467 iprule_update_complete();
471 config_init_globals(void)
473 struct uci_section
*globals
= uci_lookup_section(
474 uci_ctx
, uci_network
, "globals");
478 const char *ula_prefix
= uci_lookup_option_string(
479 uci_ctx
, globals
, "ula_prefix");
480 interface_ip_set_ula_prefix(ula_prefix
);
484 config_init_all(void)
486 uci_network
= config_init_package("network");
488 fprintf(stderr
, "Failed to load network config\n");
492 vlist_update(&interfaces
);
496 device_reset_config();
497 config_init_devices();
498 config_init_interfaces();
499 config_init_routes();
501 config_init_globals();
507 device_init_pending();
508 vlist_flush(&interfaces
);
509 device_free_unused(NULL
);
510 interface_refresh_assignments(false);
511 interface_start_pending();