1 /*
2 * AP mode helper functions
3 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "common/ieee802_11_defs.h"
13 #include "sta_info.h"
14 #include "hostapd.h"
15
16
hostapd_register_probereq_cb(struct hostapd_data * hapd,int (* cb)(void * ctx,const u8 * sa,const u8 * da,const u8 * bssid,const u8 * ie,size_t ie_len),void * ctx)17 int hostapd_register_probereq_cb(struct hostapd_data *hapd,
18 int (*cb)(void *ctx, const u8 *sa,
19 const u8 *da, const u8 *bssid,
20 const u8 *ie, size_t ie_len),
21 void *ctx)
22 {
23 struct hostapd_probereq_cb *n;
24
25 n = os_realloc(hapd->probereq_cb, (hapd->num_probereq_cb + 1) *
26 sizeof(struct hostapd_probereq_cb));
27 if (n == NULL)
28 return -1;
29
30 hapd->probereq_cb = n;
31 n = &hapd->probereq_cb[hapd->num_probereq_cb];
32 hapd->num_probereq_cb++;
33
34 n->cb = cb;
35 n->ctx = ctx;
36
37 return 0;
38 }
39
40
41 struct prune_data {
42 struct hostapd_data *hapd;
43 const u8 *addr;
44 };
45
prune_associations(struct hostapd_iface * iface,void * ctx)46 static int prune_associations(struct hostapd_iface *iface, void *ctx)
47 {
48 struct prune_data *data = ctx;
49 struct sta_info *osta;
50 struct hostapd_data *ohapd;
51 size_t j;
52
53 for (j = 0; j < iface->num_bss; j++) {
54 ohapd = iface->bss[j];
55 if (ohapd == data->hapd)
56 continue;
57 osta = ap_get_sta(ohapd, data->addr);
58 if (!osta)
59 continue;
60
61 ap_sta_disassociate(ohapd, osta, WLAN_REASON_UNSPECIFIED);
62 }
63
64 return 0;
65 }
66
67 /**
68 * hostapd_prune_associations - Remove extraneous associations
69 * @hapd: Pointer to BSS data for the most recent association
70 * @addr: Associated STA address
71 *
72 * This function looks through all radios and BSS's for previous
73 * (stale) associations of STA. If any are found they are removed.
74 */
hostapd_prune_associations(struct hostapd_data * hapd,const u8 * addr)75 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr)
76 {
77 struct prune_data data;
78 data.hapd = hapd;
79 data.addr = addr;
80 if (hapd->iface->for_each_interface)
81 hapd->iface->for_each_interface(hapd->iface->interfaces,
82 prune_associations, &data);
83 }
84