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 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 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_TESTING_OPTIONS 60 if (ohapd->conf->skip_prune_assoc) 61 continue; 62 #endif /* CONFIG_TESTING_OPTIONS */ 63 #ifdef CONFIG_FST 64 /* Don't prune STAs belong to same FST */ 65 if (ohapd->iface->fst && 66 data->hapd->iface->fst && 67 fst_are_ifaces_aggregated(ohapd->iface->fst, 68 data->hapd->iface->fst)) 69 continue; 70 #endif /* CONFIG_FST */ 71 osta = ap_get_sta(ohapd, data->addr); 72 if (!osta) 73 continue; 74 75 wpa_printf(MSG_INFO, "%s: Prune association for " MACSTR, 76 ohapd->conf->iface, MAC2STR(osta->addr)); 77 ap_sta_disassociate(ohapd, osta, WLAN_REASON_UNSPECIFIED); 78 } 79 80 return 0; 81 } 82 83 /** 84 * hostapd_prune_associations - Remove extraneous associations 85 * @hapd: Pointer to BSS data for the most recent association 86 * @addr: Associated STA address 87 * 88 * This function looks through all radios and BSS's for previous 89 * (stale) associations of STA. If any are found they are removed. 90 */ 91 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr) 92 { 93 struct prune_data data; 94 data.hapd = hapd; 95 data.addr = addr; 96 if (hapd->iface->interfaces && 97 hapd->iface->interfaces->for_each_interface) 98 hapd->iface->interfaces->for_each_interface( 99 hapd->iface->interfaces, prune_associations, &data); 100 } 101