1 /* 2 * AP mode helper functions 3 * Copyright (c) 2009, Jouni Malinen <j@w1.fi> 4 * 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 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #include "includes.h" 16 17 #include "common.h" 18 #include "common/ieee802_11_defs.h" 19 #include "sta_info.h" 20 #include "hostapd.h" 21 22 23 int hostapd_register_probereq_cb(struct hostapd_data *hapd, 24 int (*cb)(void *ctx, const u8 *sa, 25 const u8 *ie, size_t ie_len), 26 void *ctx) 27 { 28 struct hostapd_probereq_cb *n; 29 30 n = os_realloc(hapd->probereq_cb, (hapd->num_probereq_cb + 1) * 31 sizeof(struct hostapd_probereq_cb)); 32 if (n == NULL) 33 return -1; 34 35 hapd->probereq_cb = n; 36 n = &hapd->probereq_cb[hapd->num_probereq_cb]; 37 hapd->num_probereq_cb++; 38 39 n->cb = cb; 40 n->ctx = ctx; 41 42 return 0; 43 } 44 45 46 struct prune_data { 47 struct hostapd_data *hapd; 48 const u8 *addr; 49 }; 50 51 static int prune_associations(struct hostapd_iface *iface, void *ctx) 52 { 53 struct prune_data *data = ctx; 54 struct sta_info *osta; 55 struct hostapd_data *ohapd; 56 size_t j; 57 58 for (j = 0; j < iface->num_bss; j++) { 59 ohapd = iface->bss[j]; 60 if (ohapd == data->hapd) 61 continue; 62 osta = ap_get_sta(ohapd, data->addr); 63 if (!osta) 64 continue; 65 66 ap_sta_disassociate(ohapd, osta, WLAN_REASON_UNSPECIFIED); 67 } 68 69 return 0; 70 } 71 72 /** 73 * hostapd_prune_associations - Remove extraneous associations 74 * @hapd: Pointer to BSS data for the most recent association 75 * @addr: Associated STA address 76 * 77 * This function looks through all radios and BSS's for previous 78 * (stale) associations of STA. If any are found they are removed. 79 */ 80 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr) 81 { 82 struct prune_data data; 83 data.hapd = hapd; 84 data.addr = addr; 85 if (hapd->iface->for_each_interface) 86 hapd->iface->for_each_interface(hapd->iface->interfaces, 87 prune_associations, &data); 88 } 89