18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * AP mode helper functions 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2009, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_defs.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "sta_info.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "hostapd.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint hostapd_register_probereq_cb(struct hostapd_data *hapd, 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int (*cb)(void *ctx, const u8 *sa, 191f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt const u8 *da, const u8 *bssid, 2004949598a23f501be6eec21697465fd46a28840aDmitry Shmidt const u8 *ie, size_t ie_len, 2104949598a23f501be6eec21697465fd46a28840aDmitry Shmidt int ssi_signal), 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt void *ctx) 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct hostapd_probereq_cb *n; 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt n = os_realloc_array(hapd->probereq_cb, hapd->num_probereq_cb + 1, 2761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt sizeof(struct hostapd_probereq_cb)); 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (n == NULL) 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hapd->probereq_cb = n; 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt n = &hapd->probereq_cb[hapd->num_probereq_cb]; 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hapd->num_probereq_cb++; 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt n->cb = cb; 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt n->ctx = ctx; 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct prune_data { 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct hostapd_data *hapd; 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr; 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int prune_associations(struct hostapd_iface *iface, void *ctx) 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct prune_data *data = ctx; 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct sta_info *osta; 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct hostapd_data *ohapd; 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t j; 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (j = 0; j < iface->num_bss; j++) { 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ohapd = iface->bss[j]; 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ohapd == data->hapd) 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt continue; 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt osta = ap_get_sta(ohapd, data->addr); 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!osta) 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt continue; 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ap_sta_disassociate(ohapd, osta, WLAN_REASON_UNSPECIFIED); 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * hostapd_prune_associations - Remove extraneous associations 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @hapd: Pointer to BSS data for the most recent association 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @addr: Associated STA address 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This function looks through all radios and BSS's for previous 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * (stale) associations of STA. If any are found they are removed. 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr) 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct prune_data data; 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data.hapd = hapd; 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data.addr = addr; 8161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (hapd->iface->interfaces && 8261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt hapd->iface->interfaces->for_each_interface) 8361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt hapd->iface->interfaces->for_each_interface( 8461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt hapd->iface->interfaces, prune_associations, &data); 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 86