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 "fst/fst.h"
14 #include "sta_info.h"
15 #include "hostapd.h"
16
17
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,int ssi_signal),void * ctx)18 int hostapd_register_probereq_cb(struct hostapd_data *hapd,
19 int (*cb)(void *ctx, const u8 *sa,
20 const u8 *da, const u8 *bssid,
21 const u8 *ie, size_t ie_len,
22 int ssi_signal),
23 void *ctx)
24 {
25 struct hostapd_probereq_cb *n;
26
27 n = os_realloc_array(hapd->probereq_cb, hapd->num_probereq_cb + 1,
28 sizeof(struct hostapd_probereq_cb));
29 if (n == NULL)
30 return -1;
31
32 hapd->probereq_cb = n;
33 n = &hapd->probereq_cb[hapd->num_probereq_cb];
34 hapd->num_probereq_cb++;
35
36 n->cb = cb;
37 n->ctx = ctx;
38
39 return 0;
40 }
41
42
43 struct prune_data {
44 struct hostapd_data *hapd;
45 const u8 *addr;
46 };
47
prune_associations(struct hostapd_iface * iface,void * ctx)48 static int prune_associations(struct hostapd_iface *iface, void *ctx)
49 {
50 struct prune_data *data = ctx;
51 struct sta_info *osta;
52 struct hostapd_data *ohapd;
53 size_t j;
54
55 for (j = 0; j < iface->num_bss; j++) {
56 ohapd = iface->bss[j];
57 if (ohapd == data->hapd)
58 continue;
59 #ifdef CONFIG_FST
60 /* Don't prune STAs belong to same FST */
61 if (ohapd->iface->fst &&
62 data->hapd->iface->fst &&
63 fst_are_ifaces_aggregated(ohapd->iface->fst,
64 data->hapd->iface->fst))
65 continue;
66 #endif /* CONFIG_FST */
67 osta = ap_get_sta(ohapd, data->addr);
68 if (!osta)
69 continue;
70
71 wpa_printf(MSG_INFO, "%s: Prune association for " MACSTR,
72 ohapd->conf->iface, MAC2STR(osta->addr));
73 ap_sta_disassociate(ohapd, osta, WLAN_REASON_UNSPECIFIED);
74 }
75
76 return 0;
77 }
78
79 /**
80 * hostapd_prune_associations - Remove extraneous associations
81 * @hapd: Pointer to BSS data for the most recent association
82 * @addr: Associated STA address
83 *
84 * This function looks through all radios and BSS's for previous
85 * (stale) associations of STA. If any are found they are removed.
86 */
hostapd_prune_associations(struct hostapd_data * hapd,const u8 * addr)87 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr)
88 {
89 struct prune_data data;
90 data.hapd = hapd;
91 data.addr = addr;
92 if (hapd->iface->interfaces &&
93 hapd->iface->interfaces->for_each_interface)
94 hapd->iface->interfaces->for_each_interface(
95 hapd->iface->interfaces, prune_associations, &data);
96 }
97