blob: b604d006c356c4690e41c8c41573eff26dda6252 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
#ifndef __IPV6_DNS_H
#define __IPV6_DNS_H
#include <netinet/in.h>
#include "list.h"
#include "ipdb.h"
#include "ap_session.h"
/*
* Pick the IPv6 DNS servers to advertise to a session.
*
* A session may have been assigned its own servers (currently by the radius
* module, from the DNS-Server-IPv6-Address attribute of RFC 6911); those take
* precedence. Sessions without any fall back to the globally configured ones,
* which is what every session got before per session servers existed.
*
* Up to 'max' addresses are written to 'dns', the number written is returned.
* Callers advertise nothing when that is 0.
*/
static inline int ipv6_dns_get(const struct ap_session *ses,
const struct in6_addr *conf_dns, int conf_dns_count,
struct in6_addr *dns, int max)
{
struct ipv6db_addr_t *a;
int count = 0;
if (ses && ses->ipv6_dns) {
list_for_each_entry(a, &ses->ipv6_dns->addr_list, entry) {
if (count == max)
break;
dns[count++] = a->addr;
}
/* An empty list means "nothing assigned", not "no DNS at all" */
if (count)
return count;
}
while (count < conf_dns_count && count < max) {
dns[count] = conf_dns[count];
count++;
}
return count;
}
#endif
|
