2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
20 #include <arpa/inet.h>
24 #include "interface.h"
30 struct vlist_tree iprules
;
31 static bool iprules_flushed
= false;
32 static unsigned int iprules_counter
[2];
49 static const struct blobmsg_policy rule_attr
[__RULE_MAX
] = {
50 [RULE_INTERFACE_IN
] = { .name
= "in", .type
= BLOBMSG_TYPE_STRING
},
51 [RULE_INTERFACE_OUT
] = { .name
= "out", .type
= BLOBMSG_TYPE_STRING
},
52 [RULE_INVERT
] = { .name
= "invert", .type
= BLOBMSG_TYPE_BOOL
},
53 [RULE_SRC
] = { .name
= "src", .type
= BLOBMSG_TYPE_STRING
},
54 [RULE_DEST
] = { .name
= "dest", .type
= BLOBMSG_TYPE_STRING
},
55 [RULE_PRIORITY
] = { .name
= "priority", .type
= BLOBMSG_TYPE_INT32
},
56 [RULE_TOS
] = { .name
= "tos", .type
= BLOBMSG_TYPE_INT32
},
57 [RULE_FWMARK
] = { .name
= "mark", .type
= BLOBMSG_TYPE_STRING
},
58 [RULE_LOOKUP
] = { .name
= "lookup", .type
= BLOBMSG_TYPE_STRING
},
59 [RULE_ACTION
] = { .name
= "action", .type
= BLOBMSG_TYPE_STRING
},
60 [RULE_GOTO
] = { .name
= "goto", .type
= BLOBMSG_TYPE_INT32
},
63 const struct config_param_list rule_attr_list
= {
64 .n_params
= __RULE_MAX
,
70 iprule_parse_mark(const char *mark
, struct iprule
*rule
)
75 if ((s
= strchr(mark
, '/')) != NULL
)
78 n
= strtoul(mark
, &e
, 0);
84 rule
->flags
|= IPRULE_FWMARK
;
87 n
= strtoul(s
, &e
, 0);
93 rule
->flags
|= IPRULE_FWMASK
;
100 iprule_add(struct blob_attr
*attr
, bool v6
)
102 struct interface
*iif
= NULL
, *oif
= NULL
;
103 struct blob_attr
*tb
[__RULE_MAX
], *cur
;
104 struct interface
*iface
;
106 int af
= v6
? AF_INET6
: AF_INET
;
108 blobmsg_parse(rule_attr
, __RULE_MAX
, tb
, blobmsg_data(attr
), blobmsg_data_len(attr
));
110 rule
= calloc(1, sizeof(*rule
));
114 rule
->flags
= v6
? IPRULE_INET6
: IPRULE_INET4
;
115 rule
->order
= iprules_counter
[rule
->flags
]++;
117 if ((cur
= tb
[RULE_INVERT
]) != NULL
)
118 rule
->invert
= blobmsg_get_bool(cur
);
120 if ((cur
= tb
[RULE_INTERFACE_IN
]) != NULL
) {
121 iif
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
123 if (!iif
|| !iif
->l3_dev
.dev
) {
124 DPRINTF("Failed to resolve device of network: %s\n", (char *) blobmsg_data(cur
));
128 memcpy(rule
->in_dev
, iif
->l3_dev
.dev
->ifname
, sizeof(rule
->in_dev
));
129 rule
->flags
|= IPRULE_IN
;
132 if ((cur
= tb
[RULE_INTERFACE_OUT
]) != NULL
) {
133 oif
= vlist_find(&interfaces
, blobmsg_data(cur
), iface
, node
);
135 if (!oif
|| !oif
->l3_dev
.dev
) {
136 DPRINTF("Failed to resolve device of network: %s\n", (char *) blobmsg_data(cur
));
140 memcpy(rule
->out_dev
, oif
->l3_dev
.dev
->ifname
, sizeof(rule
->out_dev
));
141 rule
->flags
|= IPRULE_OUT
;
144 if ((cur
= tb
[RULE_SRC
]) != NULL
) {
145 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &rule
->src_addr
, &rule
->src_mask
)) {
146 DPRINTF("Failed to parse rule source: %s\n", (char *) blobmsg_data(cur
));
149 rule
->flags
|= IPRULE_SRC
;
152 if ((cur
= tb
[RULE_DEST
]) != NULL
) {
153 if (!parse_ip_and_netmask(af
, blobmsg_data(cur
), &rule
->dest_addr
, &rule
->dest_mask
)) {
154 DPRINTF("Failed to parse rule destination: %s\n", (char *) blobmsg_data(cur
));
157 rule
->flags
|= IPRULE_DEST
;
160 if ((cur
= tb
[RULE_PRIORITY
]) != NULL
) {
161 rule
->priority
= blobmsg_get_u32(cur
);
162 rule
->flags
|= IPRULE_PRIORITY
;
165 if ((cur
= tb
[RULE_TOS
]) != NULL
) {
166 if ((rule
->tos
= blobmsg_get_u32(cur
)) > 255) {
167 DPRINTF("Invalid TOS value: %u\n", blobmsg_get_u32(cur
));
170 rule
->flags
|= IPRULE_TOS
;
173 if ((cur
= tb
[RULE_FWMARK
]) != NULL
) {
174 if (!iprule_parse_mark(blobmsg_data(cur
), rule
)) {
175 DPRINTF("Failed to parse rule fwmark: %s\n", (char *) blobmsg_data(cur
));
178 /* flags set by iprule_parse_mark() */
181 if ((cur
= tb
[RULE_LOOKUP
]) != NULL
) {
182 if (!system_resolve_rt_table(blobmsg_data(cur
), &rule
->lookup
)) {
183 DPRINTF("Failed to parse rule lookup table: %s\n", (char *) blobmsg_data(cur
));
186 rule
->flags
|= IPRULE_LOOKUP
;
189 if ((cur
= tb
[RULE_ACTION
]) != NULL
) {
190 if (!system_resolve_iprule_action(blobmsg_data(cur
), &rule
->action
)) {
191 DPRINTF("Failed to parse rule action: %s\n", (char *) blobmsg_data(cur
));
194 rule
->flags
|= IPRULE_ACTION
;
197 if ((cur
= tb
[RULE_GOTO
]) != NULL
) {
198 rule
->gotoid
= blobmsg_get_u32(cur
);
199 rule
->flags
|= IPRULE_GOTO
;
202 vlist_add(&iprules
, &rule
->node
, &rule
->flags
);
210 iprule_update_start(void)
212 if (!iprules_flushed
) {
213 system_flush_iprules();
214 iprules_flushed
= true;
217 iprules_counter
[0] = 1;
218 iprules_counter
[1] = 1;
219 vlist_update(&iprules
);
223 iprule_update_complete(void)
225 vlist_flush(&iprules
);
230 rule_cmp(const void *k1
, const void *k2
, void *ptr
)
232 return memcmp(k1
, k2
, sizeof(struct iprule
)-offsetof(struct iprule
, flags
));
236 iprule_update_rule(struct vlist_tree
*tree
,
237 struct vlist_node
*node_new
, struct vlist_node
*node_old
)
239 struct iprule
*rule_old
, *rule_new
;
241 rule_old
= container_of(node_old
, struct iprule
, node
);
242 rule_new
= container_of(node_new
, struct iprule
, node
);
245 system_del_iprule(rule_old
);
250 system_add_iprule(rule_new
);
254 iprule_init_list(void)
256 vlist_init(&iprules
, rule_cmp
, iprule_update_rule
);