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.
18 #include <arpa/inet.h>
19 #include <netinet/in.h>
22 __vlist_simple_init(struct vlist_simple_tree
*tree
, int offset
)
24 INIT_LIST_HEAD(&tree
->list
);
26 tree
->head_offset
= offset
;
30 vlist_simple_delete(struct vlist_simple_tree
*tree
, struct vlist_simple_node
*node
)
34 list_del(&node
->list
);
35 ptr
= (char *) node
- tree
->head_offset
;
40 vlist_simple_flush(struct vlist_simple_tree
*tree
)
42 struct vlist_simple_node
*n
, *tmp
;
44 list_for_each_entry_safe(n
, tmp
, &tree
->list
, list
) {
45 if ((n
->version
== tree
->version
|| n
->version
== -1) &&
49 vlist_simple_delete(tree
, n
);
54 vlist_simple_replace(struct vlist_simple_tree
*dest
, struct vlist_simple_tree
*old
)
56 struct vlist_simple_node
*n
, *tmp
;
58 vlist_simple_update(dest
);
59 list_for_each_entry_safe(n
, tmp
, &old
->list
, list
) {
61 vlist_simple_add(dest
, n
);
63 vlist_simple_flush(dest
);
67 vlist_simple_flush_all(struct vlist_simple_tree
*tree
)
70 vlist_simple_flush(tree
);
74 parse_netmask_string(const char *str
, bool v6
)
80 if (!strchr(str
, '.')) {
81 ret
= strtoul(str
, &err
, 0);
91 if (inet_aton(str
, &addr
) != 1)
94 return 32 - fls(~(ntohl(addr
.s_addr
)));
101 split_netmask(char *str
, unsigned int *netmask
, bool v6
)
103 char *delim
= strchr(str
, '/');
108 *netmask
= parse_netmask_string(delim
, v6
);
114 parse_ip_and_netmask(int af
, const char *str
, void *addr
, unsigned int *netmask
)
116 char *astr
= alloca(strlen(str
) + 1);
119 if (!split_netmask(astr
, netmask
, af
== AF_INET6
))
122 if (af
== AF_INET6
) {
130 return inet_pton(af
, astr
, addr
);
134 format_macaddr(uint8_t *mac
)
136 static char str
[sizeof("ff:ff:ff:ff:ff:ff ")];
138 snprintf(str
, sizeof(str
), "%02x:%02x:%02x:%02x:%02x:%02x",
139 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5]);
147 static uint32_t *crcvals
= NULL
;
149 crcvals
= malloc(sizeof(*crcvals
) * 256);
151 for (size_t i
= 0; i
< 256; ++i
) {
153 for (size_t j
= 0; j
< 8; ++j
)
154 c
= (c
& 1) ? (0xEDB88320 ^ (c
>> 1)) : (c
>> 1);
161 uint32_t c
= 0xFFFFFFFF;
164 len
= fread(buf
, 1, sizeof(buf
), fp
);
165 for (size_t i
= 0; i
< len
; ++i
)
166 c
= crcvals
[(c
^ buf
[i
]) & 0xFF] ^ (c
>> 8);
167 } while (len
== sizeof(buf
));
169 return c
^ 0xFFFFFFFF;