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xianfeng |
/*
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* BSS client mode implementation
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* Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
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* Copyright 2004, Instant802 Networks, Inc.
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* Copyright 2005, Devicescape Software, Inc.
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* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
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* Copyright 2007, Michael Wu <flamingice@sourmilk.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/* TODO:
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* order BSS list by RSSI(?) ("quality of AP")
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* scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE,
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* SSID)
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*/
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#include <linux/delay.h>
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#include <linux/if_ether.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/if_arp.h>
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#include <linux/wireless.h>
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#include <linux/random.h>
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#include <linux/etherdevice.h>
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#include <net/iw_handler.h>
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#include <asm/types.h>
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#include <net/mac80211.h>
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#include "ieee80211_i.h"
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#include "ieee80211_rate.h"
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#include "ieee80211_led.h"
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#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
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#define IEEE80211_AUTH_MAX_TRIES 3
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#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
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#define IEEE80211_ASSOC_MAX_TRIES 3
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#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
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#define IEEE80211_PROBE_INTERVAL (60 * HZ)
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#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
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#define IEEE80211_SCAN_INTERVAL (2 * HZ)
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#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ)
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#define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ)
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#define IEEE80211_PROBE_DELAY (HZ / 33)
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#define IEEE80211_CHANNEL_TIME (HZ / 33)
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#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
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#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)
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#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
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#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
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#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
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#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
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#define ERP_INFO_USE_PROTECTION BIT(1)
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static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
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u8 *ssid, size_t ssid_len);
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static struct ieee80211_sta_bss *
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ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
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u8 *ssid, u8 ssid_len);
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static void ieee80211_rx_bss_put(struct net_device *dev,
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struct ieee80211_sta_bss *bss);
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static int ieee80211_sta_find_ibss(struct net_device *dev,
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struct ieee80211_if_sta *ifsta);
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static int ieee80211_sta_wep_configured(struct net_device *dev);
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static int ieee80211_sta_start_scan(struct net_device *dev,
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u8 *ssid, size_t ssid_len);
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static int ieee80211_sta_config_auth(struct net_device *dev,
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struct ieee80211_if_sta *ifsta);
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/* Parsed Information Elements */
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struct ieee802_11_elems {
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/* pointers to IEs */
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u8 *ssid;
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u8 *supp_rates;
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u8 *fh_params;
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u8 *ds_params;
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u8 *cf_params;
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u8 *tim;
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u8 *ibss_params;
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u8 *challenge;
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u8 *wpa;
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u8 *rsn;
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u8 *erp_info;
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u8 *ext_supp_rates;
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u8 *wmm_info;
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u8 *wmm_param;
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/* length of them, respectively */
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u8 ssid_len;
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u8 supp_rates_len;
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u8 fh_params_len;
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u8 ds_params_len;
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u8 cf_params_len;
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u8 tim_len;
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u8 ibss_params_len;
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u8 challenge_len;
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u8 wpa_len;
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u8 rsn_len;
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u8 erp_info_len;
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u8 ext_supp_rates_len;
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u8 wmm_info_len;
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u8 wmm_param_len;
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};
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static void ieee802_11_parse_elems(u8 *start, size_t len,
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struct ieee802_11_elems *elems)
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{
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size_t left = len;
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u8 *pos = start;
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memset(elems, 0, sizeof(*elems));
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while (left >= 2) {
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u8 id, elen;
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id = *pos++;
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elen = *pos++;
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left -= 2;
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if (elen > left)
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return;
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switch (id) {
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case WLAN_EID_SSID:
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elems->ssid = pos;
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elems->ssid_len = elen;
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break;
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case WLAN_EID_SUPP_RATES:
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elems->supp_rates = pos;
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elems->supp_rates_len = elen;
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break;
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case WLAN_EID_FH_PARAMS:
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elems->fh_params = pos;
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elems->fh_params_len = elen;
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break;
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case WLAN_EID_DS_PARAMS:
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elems->ds_params = pos;
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elems->ds_params_len = elen;
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break;
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case WLAN_EID_CF_PARAMS:
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elems->cf_params = pos;
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elems->cf_params_len = elen;
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break;
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case WLAN_EID_TIM:
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elems->tim = pos;
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elems->tim_len = elen;
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break;
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case WLAN_EID_IBSS_PARAMS:
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elems->ibss_params = pos;
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elems->ibss_params_len = elen;
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break;
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case WLAN_EID_CHALLENGE:
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elems->challenge = pos;
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elems->challenge_len = elen;
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break;
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case WLAN_EID_WPA:
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if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
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pos[2] == 0xf2) {
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/* Microsoft OUI (00:50:F2) */
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if (pos[3] == 1) {
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/* OUI Type 1 - WPA IE */
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elems->wpa = pos;
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elems->wpa_len = elen;
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} else if (elen >= 5 && pos[3] == 2) {
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if (pos[4] == 0) {
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elems->wmm_info = pos;
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elems->wmm_info_len = elen;
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} else if (pos[4] == 1) {
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elems->wmm_param = pos;
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elems->wmm_param_len = elen;
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}
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}
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}
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break;
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case WLAN_EID_RSN:
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elems->rsn = pos;
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elems->rsn_len = elen;
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break;
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case WLAN_EID_ERP_INFO:
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elems->erp_info = pos;
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elems->erp_info_len = elen;
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break;
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| 189 |
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case WLAN_EID_EXT_SUPP_RATES:
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elems->ext_supp_rates = pos;
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elems->ext_supp_rates_len = elen;
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break;
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default:
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break;
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| 195 |
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}
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| 197 |
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left -= elen;
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| 198 |
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pos += elen;
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}
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| 200 |
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}
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| 201 |
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| 202 |
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| 203 |
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static int ecw2cw(int ecw)
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{
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| 205 |
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int cw = 1;
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| 206 |
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while (ecw > 0) {
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| 207 |
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cw <<= 1;
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| 208 |
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ecw--;
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| 209 |
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}
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| 210 |
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return cw - 1;
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| 211 |
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}
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| 212 |
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| 213 |
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static void ieee80211_sta_wmm_params(struct net_device *dev,
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| 214 |
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struct ieee80211_if_sta *ifsta,
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| 215 |
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u8 *wmm_param, size_t wmm_param_len)
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| 216 |
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{
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| 217 |
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struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
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| 218 |
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struct ieee80211_tx_queue_params params;
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| 219 |
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size_t left;
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| 220 |
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int count;
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| 221 |
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u8 *pos;
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| 222 |
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| 223 |
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if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
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| 224 |
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return;
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| 225 |
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count = wmm_param[6] & 0x0f;
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| 226 |
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if (count == ifsta->wmm_last_param_set)
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| 227 |
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return;
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| 228 |
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ifsta->wmm_last_param_set = count;
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| 229 |
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| 230 |
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pos = wmm_param + 8;
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| 231 |
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left = wmm_param_len - 8;
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| 232 |
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| 233 |
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memset(¶ms, 0, sizeof(params));
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| 234 |
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| 235 |
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if (!local->ops->conf_tx)
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| 236 |
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return;
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| 237 |
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| 238 |
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local->wmm_acm = 0;
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| 239 |
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for (; left >= 4; left -= 4, pos += 4) {
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| 240 |
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int aci = (pos[0] >> 5) & 0x03;
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| 241 |
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int acm = (pos[0] >> 4) & 0x01;
|
| 242 |
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int queue;
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| 243 |
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| 244 |
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switch (aci) {
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| 245 |
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case 1:
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| 246 |
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queue = IEEE80211_TX_QUEUE_DATA3;
|
| 247 |
|
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if (acm) {
|
| 248 |
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local->wmm_acm |= BIT(0) | BIT(3);
|
| 249 |
|
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}
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| 250 |
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break;
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| 251 |
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case 2:
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| 252 |
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queue = IEEE80211_TX_QUEUE_DATA1;
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| 253 |
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if (acm) {
|
| 254 |
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local->wmm_acm |= BIT(4) | BIT(5);
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| 255 |
|
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}
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| 256 |
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break;
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| 257 |
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case 3:
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| 258 |
|
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queue = IEEE80211_TX_QUEUE_DATA0;
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| 259 |
|
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if (acm) {
|
| 260 |
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local->wmm_acm |= BIT(6) | BIT(7);
|
| 261 |
|
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}
|
| 262 |
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break;
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| 263 |
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case 0:
|
| 264 |
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default:
|
| 265 |
|
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queue = IEEE80211_TX_QUEUE_DATA2;
|
| 266 |
|
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if (acm) {
|
| 267 |
|
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local->wmm_acm |= BIT(1) | BIT(2);
|
| 268 |
|
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}
|
| 269 |
|
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break;
|
| 270 |
|
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}
|
| 271 |
|
|
|
| 272 |
|
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params.aifs = pos[0] & 0x0f;
|
| 273 |
|
|
params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
|
| 274 |
|
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params.cw_min = ecw2cw(pos[1] & 0x0f);
|
| 275 |
|
|
/* TXOP is in units of 32 usec; burst_time in 0.1 ms */
|
| 276 |
|
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params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
|
| 277 |
|
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printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d "
|
| 278 |
|
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"cWmin=%d cWmax=%d burst=%d\n",
|
| 279 |
|
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dev->name, queue, aci, acm, params.aifs, params.cw_min,
|
| 280 |
|
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params.cw_max, params.burst_time);
|
| 281 |
|
|
/* TODO: handle ACM (block TX, fallback to next lowest allowed
|
| 282 |
|
|
* AC for now) */
|
| 283 |
|
|
if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) {
|
| 284 |
|
|
printk(KERN_DEBUG "%s: failed to set TX queue "
|
| 285 |
|
|
"parameters for queue %d\n", dev->name, queue);
|
| 286 |
|
|
}
|
| 287 |
|
|
}
|
| 288 |
|
|
}
|
| 289 |
|
|
|
| 290 |
|
|
|
| 291 |
|
|
static void ieee80211_handle_erp_ie(struct net_device *dev, u8 erp_value)
|
| 292 |
|
|
{
|
| 293 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 294 |
|
|
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
|
| 295 |
|
|
int use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
|
| 296 |
|
|
int preamble_mode = (erp_value & WLAN_ERP_BARKER_PREAMBLE) != 0;
|
| 297 |
|
|
u8 changes = 0;
|
| 298 |
|
|
DECLARE_MAC_BUF(mac);
|
| 299 |
|
|
|
| 300 |
|
|
if (use_protection != !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION)) {
|
| 301 |
|
|
if (net_ratelimit()) {
|
| 302 |
|
|
printk(KERN_DEBUG "%s: CTS protection %s (BSSID="
|
| 303 |
|
|
"%s)\n",
|
| 304 |
|
|
dev->name,
|
| 305 |
|
|
use_protection ? "enabled" : "disabled",
|
| 306 |
|
|
print_mac(mac, ifsta->bssid));
|
| 307 |
|
|
}
|
| 308 |
|
|
if (use_protection)
|
| 309 |
|
|
sdata->flags |= IEEE80211_SDATA_USE_PROTECTION;
|
| 310 |
|
|
else
|
| 311 |
|
|
sdata->flags &= ~IEEE80211_SDATA_USE_PROTECTION;
|
| 312 |
|
|
changes |= IEEE80211_ERP_CHANGE_PROTECTION;
|
| 313 |
|
|
}
|
| 314 |
|
|
|
| 315 |
|
|
if (preamble_mode != !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE)) {
|
| 316 |
|
|
if (net_ratelimit()) {
|
| 317 |
|
|
printk(KERN_DEBUG "%s: switched to %s barker preamble"
|
| 318 |
|
|
" (BSSID=%s)\n",
|
| 319 |
|
|
dev->name,
|
| 320 |
|
|
(preamble_mode == WLAN_ERP_PREAMBLE_SHORT) ?
|
| 321 |
|
|
"short" : "long",
|
| 322 |
|
|
print_mac(mac, ifsta->bssid));
|
| 323 |
|
|
}
|
| 324 |
|
|
if (preamble_mode)
|
| 325 |
|
|
sdata->flags &= ~IEEE80211_SDATA_SHORT_PREAMBLE;
|
| 326 |
|
|
else
|
| 327 |
|
|
sdata->flags |= IEEE80211_SDATA_SHORT_PREAMBLE;
|
| 328 |
|
|
changes |= IEEE80211_ERP_CHANGE_PREAMBLE;
|
| 329 |
|
|
}
|
| 330 |
|
|
|
| 331 |
|
|
if (changes)
|
| 332 |
|
|
ieee80211_erp_info_change_notify(dev, changes);
|
| 333 |
|
|
}
|
| 334 |
|
|
|
| 335 |
|
|
|
| 336 |
|
|
static void ieee80211_sta_send_associnfo(struct net_device *dev,
|
| 337 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 338 |
|
|
{
|
| 339 |
|
|
char *buf;
|
| 340 |
|
|
size_t len;
|
| 341 |
|
|
int i;
|
| 342 |
|
|
union iwreq_data wrqu;
|
| 343 |
|
|
|
| 344 |
|
|
if (!ifsta->assocreq_ies && !ifsta->assocresp_ies)
|
| 345 |
|
|
return;
|
| 346 |
|
|
|
| 347 |
|
|
buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len +
|
| 348 |
|
|
ifsta->assocresp_ies_len), GFP_KERNEL);
|
| 349 |
|
|
if (!buf)
|
| 350 |
|
|
return;
|
| 351 |
|
|
|
| 352 |
|
|
len = sprintf(buf, "ASSOCINFO(");
|
| 353 |
|
|
if (ifsta->assocreq_ies) {
|
| 354 |
|
|
len += sprintf(buf + len, "ReqIEs=");
|
| 355 |
|
|
for (i = 0; i < ifsta->assocreq_ies_len; i++) {
|
| 356 |
|
|
len += sprintf(buf + len, "%02x",
|
| 357 |
|
|
ifsta->assocreq_ies[i]);
|
| 358 |
|
|
}
|
| 359 |
|
|
}
|
| 360 |
|
|
if (ifsta->assocresp_ies) {
|
| 361 |
|
|
if (ifsta->assocreq_ies)
|
| 362 |
|
|
len += sprintf(buf + len, " ");
|
| 363 |
|
|
len += sprintf(buf + len, "RespIEs=");
|
| 364 |
|
|
for (i = 0; i < ifsta->assocresp_ies_len; i++) {
|
| 365 |
|
|
len += sprintf(buf + len, "%02x",
|
| 366 |
|
|
ifsta->assocresp_ies[i]);
|
| 367 |
|
|
}
|
| 368 |
|
|
}
|
| 369 |
|
|
len += sprintf(buf + len, ")");
|
| 370 |
|
|
|
| 371 |
|
|
if (len > IW_CUSTOM_MAX) {
|
| 372 |
|
|
len = sprintf(buf, "ASSOCRESPIE=");
|
| 373 |
|
|
for (i = 0; i < ifsta->assocresp_ies_len; i++) {
|
| 374 |
|
|
len += sprintf(buf + len, "%02x",
|
| 375 |
|
|
ifsta->assocresp_ies[i]);
|
| 376 |
|
|
}
|
| 377 |
|
|
}
|
| 378 |
|
|
|
| 379 |
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
| 380 |
|
|
wrqu.data.length = len;
|
| 381 |
|
|
wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
|
| 382 |
|
|
|
| 383 |
|
|
kfree(buf);
|
| 384 |
|
|
}
|
| 385 |
|
|
|
| 386 |
|
|
|
| 387 |
|
|
static void ieee80211_set_associated(struct net_device *dev,
|
| 388 |
|
|
struct ieee80211_if_sta *ifsta,
|
| 389 |
|
|
bool assoc)
|
| 390 |
|
|
{
|
| 391 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 392 |
|
|
union iwreq_data wrqu;
|
| 393 |
|
|
|
| 394 |
|
|
if (!!(ifsta->flags & IEEE80211_STA_ASSOCIATED) == assoc)
|
| 395 |
|
|
return;
|
| 396 |
|
|
|
| 397 |
|
|
if (assoc) {
|
| 398 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 399 |
|
|
struct ieee80211_sta_bss *bss;
|
| 400 |
|
|
|
| 401 |
|
|
ifsta->flags |= IEEE80211_STA_ASSOCIATED;
|
| 402 |
|
|
|
| 403 |
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 404 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_STA)
|
| 405 |
|
|
return;
|
| 406 |
|
|
|
| 407 |
|
|
bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
|
| 408 |
|
|
local->hw.conf.channel,
|
| 409 |
|
|
ifsta->ssid, ifsta->ssid_len);
|
| 410 |
|
|
if (bss) {
|
| 411 |
|
|
if (bss->has_erp_value)
|
| 412 |
|
|
ieee80211_handle_erp_ie(dev, bss->erp_value);
|
| 413 |
|
|
ieee80211_rx_bss_put(dev, bss);
|
| 414 |
|
|
}
|
| 415 |
|
|
|
| 416 |
|
|
netif_carrier_on(dev);
|
| 417 |
|
|
ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
|
| 418 |
|
|
memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
|
| 419 |
|
|
memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
|
| 420 |
|
|
ieee80211_sta_send_associnfo(dev, ifsta);
|
| 421 |
|
|
} else {
|
| 422 |
|
|
ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
|
| 423 |
|
|
|
| 424 |
|
|
netif_carrier_off(dev);
|
| 425 |
|
|
ieee80211_reset_erp_info(dev);
|
| 426 |
|
|
memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
|
| 427 |
|
|
}
|
| 428 |
|
|
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
|
| 429 |
|
|
wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
|
| 430 |
|
|
ifsta->last_probe = jiffies;
|
| 431 |
|
|
ieee80211_led_assoc(local, assoc);
|
| 432 |
|
|
}
|
| 433 |
|
|
|
| 434 |
|
|
static void ieee80211_set_disassoc(struct net_device *dev,
|
| 435 |
|
|
struct ieee80211_if_sta *ifsta, int deauth)
|
| 436 |
|
|
{
|
| 437 |
|
|
if (deauth)
|
| 438 |
|
|
ifsta->auth_tries = 0;
|
| 439 |
|
|
ifsta->assoc_tries = 0;
|
| 440 |
|
|
ieee80211_set_associated(dev, ifsta, 0);
|
| 441 |
|
|
}
|
| 442 |
|
|
|
| 443 |
|
|
static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb,
|
| 444 |
|
|
int encrypt)
|
| 445 |
|
|
{
|
| 446 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 447 |
|
|
struct ieee80211_tx_packet_data *pkt_data;
|
| 448 |
|
|
|
| 449 |
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 450 |
|
|
skb->dev = sdata->local->mdev;
|
| 451 |
|
|
skb_set_mac_header(skb, 0);
|
| 452 |
|
|
skb_set_network_header(skb, 0);
|
| 453 |
|
|
skb_set_transport_header(skb, 0);
|
| 454 |
|
|
|
| 455 |
|
|
pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
|
| 456 |
|
|
memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
|
| 457 |
|
|
pkt_data->ifindex = sdata->dev->ifindex;
|
| 458 |
|
|
if (!encrypt)
|
| 459 |
|
|
pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT;
|
| 460 |
|
|
|
| 461 |
|
|
dev_queue_xmit(skb);
|
| 462 |
|
|
}
|
| 463 |
|
|
|
| 464 |
|
|
|
| 465 |
|
|
static void ieee80211_send_auth(struct net_device *dev,
|
| 466 |
|
|
struct ieee80211_if_sta *ifsta,
|
| 467 |
|
|
int transaction, u8 *extra, size_t extra_len,
|
| 468 |
|
|
int encrypt)
|
| 469 |
|
|
{
|
| 470 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 471 |
|
|
struct sk_buff *skb;
|
| 472 |
|
|
struct ieee80211_mgmt *mgmt;
|
| 473 |
|
|
|
| 474 |
|
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
|
| 475 |
|
|
sizeof(*mgmt) + 6 + extra_len);
|
| 476 |
|
|
if (!skb) {
|
| 477 |
|
|
printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
|
| 478 |
|
|
"frame\n", dev->name);
|
| 479 |
|
|
return;
|
| 480 |
|
|
}
|
| 481 |
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
| 482 |
|
|
|
| 483 |
|
|
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
|
| 484 |
|
|
memset(mgmt, 0, 24 + 6);
|
| 485 |
|
|
mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
|
| 486 |
|
|
IEEE80211_STYPE_AUTH);
|
| 487 |
|
|
if (encrypt)
|
| 488 |
|
|
mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
|
| 489 |
|
|
memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
|
| 490 |
|
|
memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
|
| 491 |
|
|
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
|
| 492 |
|
|
mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
|
| 493 |
|
|
mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
|
| 494 |
|
|
ifsta->auth_transaction = transaction + 1;
|
| 495 |
|
|
mgmt->u.auth.status_code = cpu_to_le16(0);
|
| 496 |
|
|
if (extra)
|
| 497 |
|
|
memcpy(skb_put(skb, extra_len), extra, extra_len);
|
| 498 |
|
|
|
| 499 |
|
|
ieee80211_sta_tx(dev, skb, encrypt);
|
| 500 |
|
|
}
|
| 501 |
|
|
|
| 502 |
|
|
|
| 503 |
|
|
static void ieee80211_authenticate(struct net_device *dev,
|
| 504 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 505 |
|
|
{
|
| 506 |
|
|
DECLARE_MAC_BUF(mac);
|
| 507 |
|
|
|
| 508 |
|
|
ifsta->auth_tries++;
|
| 509 |
|
|
if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) {
|
| 510 |
|
|
printk(KERN_DEBUG "%s: authentication with AP %s"
|
| 511 |
|
|
" timed out\n",
|
| 512 |
|
|
dev->name, print_mac(mac, ifsta->bssid));
|
| 513 |
|
|
ifsta->state = IEEE80211_DISABLED;
|
| 514 |
|
|
return;
|
| 515 |
|
|
}
|
| 516 |
|
|
|
| 517 |
|
|
ifsta->state = IEEE80211_AUTHENTICATE;
|
| 518 |
|
|
printk(KERN_DEBUG "%s: authenticate with AP %s\n",
|
| 519 |
|
|
dev->name, print_mac(mac, ifsta->bssid));
|
| 520 |
|
|
|
| 521 |
|
|
ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0);
|
| 522 |
|
|
|
| 523 |
|
|
mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT);
|
| 524 |
|
|
}
|
| 525 |
|
|
|
| 526 |
|
|
|
| 527 |
|
|
static void ieee80211_send_assoc(struct net_device *dev,
|
| 528 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 529 |
|
|
{
|
| 530 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 531 |
|
|
struct ieee80211_hw_mode *mode;
|
| 532 |
|
|
struct sk_buff *skb;
|
| 533 |
|
|
struct ieee80211_mgmt *mgmt;
|
| 534 |
|
|
u8 *pos, *ies;
|
| 535 |
|
|
int i, len;
|
| 536 |
|
|
u16 capab;
|
| 537 |
|
|
struct ieee80211_sta_bss *bss;
|
| 538 |
|
|
int wmm = 0;
|
| 539 |
|
|
|
| 540 |
|
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
|
| 541 |
|
|
sizeof(*mgmt) + 200 + ifsta->extra_ie_len +
|
| 542 |
|
|
ifsta->ssid_len);
|
| 543 |
|
|
if (!skb) {
|
| 544 |
|
|
printk(KERN_DEBUG "%s: failed to allocate buffer for assoc "
|
| 545 |
|
|
"frame\n", dev->name);
|
| 546 |
|
|
return;
|
| 547 |
|
|
}
|
| 548 |
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
| 549 |
|
|
|
| 550 |
|
|
mode = local->oper_hw_mode;
|
| 551 |
|
|
capab = ifsta->capab;
|
| 552 |
|
|
if (mode->mode == MODE_IEEE80211G) {
|
| 553 |
|
|
capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
|
| 554 |
|
|
WLAN_CAPABILITY_SHORT_PREAMBLE;
|
| 555 |
|
|
}
|
| 556 |
|
|
bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
|
| 557 |
|
|
ifsta->ssid, ifsta->ssid_len);
|
| 558 |
|
|
if (bss) {
|
| 559 |
|
|
if (bss->capability & WLAN_CAPABILITY_PRIVACY)
|
| 560 |
|
|
capab |= WLAN_CAPABILITY_PRIVACY;
|
| 561 |
|
|
if (bss->wmm_ie) {
|
| 562 |
|
|
wmm = 1;
|
| 563 |
|
|
}
|
| 564 |
|
|
ieee80211_rx_bss_put(dev, bss);
|
| 565 |
|
|
}
|
| 566 |
|
|
|
| 567 |
|
|
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
|
| 568 |
|
|
memset(mgmt, 0, 24);
|
| 569 |
|
|
memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
|
| 570 |
|
|
memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
|
| 571 |
|
|
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
|
| 572 |
|
|
|
| 573 |
|
|
if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) {
|
| 574 |
|
|
skb_put(skb, 10);
|
| 575 |
|
|
mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
|
| 576 |
|
|
IEEE80211_STYPE_REASSOC_REQ);
|
| 577 |
|
|
mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
|
| 578 |
|
|
mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1);
|
| 579 |
|
|
memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid,
|
| 580 |
|
|
ETH_ALEN);
|
| 581 |
|
|
} else {
|
| 582 |
|
|
skb_put(skb, 4);
|
| 583 |
|
|
mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
|
| 584 |
|
|
IEEE80211_STYPE_ASSOC_REQ);
|
| 585 |
|
|
mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
|
| 586 |
|
|
mgmt->u.assoc_req.listen_interval = cpu_to_le16(1);
|
| 587 |
|
|
}
|
| 588 |
|
|
|
| 589 |
|
|
/* SSID */
|
| 590 |
|
|
ies = pos = skb_put(skb, 2 + ifsta->ssid_len);
|
| 591 |
|
|
*pos++ = WLAN_EID_SSID;
|
| 592 |
|
|
*pos++ = ifsta->ssid_len;
|
| 593 |
|
|
memcpy(pos, ifsta->ssid, ifsta->ssid_len);
|
| 594 |
|
|
|
| 595 |
|
|
len = mode->num_rates;
|
| 596 |
|
|
if (len > 8)
|
| 597 |
|
|
len = 8;
|
| 598 |
|
|
pos = skb_put(skb, len + 2);
|
| 599 |
|
|
*pos++ = WLAN_EID_SUPP_RATES;
|
| 600 |
|
|
*pos++ = len;
|
| 601 |
|
|
for (i = 0; i < len; i++) {
|
| 602 |
|
|
int rate = mode->rates[i].rate;
|
| 603 |
|
|
*pos++ = (u8) (rate / 5);
|
| 604 |
|
|
}
|
| 605 |
|
|
|
| 606 |
|
|
if (mode->num_rates > len) {
|
| 607 |
|
|
pos = skb_put(skb, mode->num_rates - len + 2);
|
| 608 |
|
|
*pos++ = WLAN_EID_EXT_SUPP_RATES;
|
| 609 |
|
|
*pos++ = mode->num_rates - len;
|
| 610 |
|
|
for (i = len; i < mode->num_rates; i++) {
|
| 611 |
|
|
int rate = mode->rates[i].rate;
|
| 612 |
|
|
*pos++ = (u8) (rate / 5);
|
| 613 |
|
|
}
|
| 614 |
|
|
}
|
| 615 |
|
|
|
| 616 |
|
|
if (ifsta->extra_ie) {
|
| 617 |
|
|
pos = skb_put(skb, ifsta->extra_ie_len);
|
| 618 |
|
|
memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len);
|
| 619 |
|
|
}
|
| 620 |
|
|
|
| 621 |
|
|
if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
|
| 622 |
|
|
pos = skb_put(skb, 9);
|
| 623 |
|
|
*pos++ = WLAN_EID_VENDOR_SPECIFIC;
|
| 624 |
|
|
*pos++ = 7; /* len */
|
| 625 |
|
|
*pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
|
| 626 |
|
|
*pos++ = 0x50;
|
| 627 |
|
|
*pos++ = 0xf2;
|
| 628 |
|
|
*pos++ = 2; /* WME */
|
| 629 |
|
|
*pos++ = 0; /* WME info */
|
| 630 |
|
|
*pos++ = 1; /* WME ver */
|
| 631 |
|
|
*pos++ = 0;
|
| 632 |
|
|
}
|
| 633 |
|
|
|
| 634 |
|
|
kfree(ifsta->assocreq_ies);
|
| 635 |
|
|
ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
|
| 636 |
|
|
ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL);
|
| 637 |
|
|
if (ifsta->assocreq_ies)
|
| 638 |
|
|
memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len);
|
| 639 |
|
|
|
| 640 |
|
|
ieee80211_sta_tx(dev, skb, 0);
|
| 641 |
|
|
}
|
| 642 |
|
|
|
| 643 |
|
|
|
| 644 |
|
|
static void ieee80211_send_deauth(struct net_device *dev,
|
| 645 |
|
|
struct ieee80211_if_sta *ifsta, u16 reason)
|
| 646 |
|
|
{
|
| 647 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 648 |
|
|
struct sk_buff *skb;
|
| 649 |
|
|
struct ieee80211_mgmt *mgmt;
|
| 650 |
|
|
|
| 651 |
|
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
|
| 652 |
|
|
if (!skb) {
|
| 653 |
|
|
printk(KERN_DEBUG "%s: failed to allocate buffer for deauth "
|
| 654 |
|
|
"frame\n", dev->name);
|
| 655 |
|
|
return;
|
| 656 |
|
|
}
|
| 657 |
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
| 658 |
|
|
|
| 659 |
|
|
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
|
| 660 |
|
|
memset(mgmt, 0, 24);
|
| 661 |
|
|
memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
|
| 662 |
|
|
memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
|
| 663 |
|
|
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
|
| 664 |
|
|
mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
|
| 665 |
|
|
IEEE80211_STYPE_DEAUTH);
|
| 666 |
|
|
skb_put(skb, 2);
|
| 667 |
|
|
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
|
| 668 |
|
|
|
| 669 |
|
|
ieee80211_sta_tx(dev, skb, 0);
|
| 670 |
|
|
}
|
| 671 |
|
|
|
| 672 |
|
|
|
| 673 |
|
|
static void ieee80211_send_disassoc(struct net_device *dev,
|
| 674 |
|
|
struct ieee80211_if_sta *ifsta, u16 reason)
|
| 675 |
|
|
{
|
| 676 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 677 |
|
|
struct sk_buff *skb;
|
| 678 |
|
|
struct ieee80211_mgmt *mgmt;
|
| 679 |
|
|
|
| 680 |
|
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
|
| 681 |
|
|
if (!skb) {
|
| 682 |
|
|
printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc "
|
| 683 |
|
|
"frame\n", dev->name);
|
| 684 |
|
|
return;
|
| 685 |
|
|
}
|
| 686 |
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
| 687 |
|
|
|
| 688 |
|
|
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
|
| 689 |
|
|
memset(mgmt, 0, 24);
|
| 690 |
|
|
memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
|
| 691 |
|
|
memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
|
| 692 |
|
|
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
|
| 693 |
|
|
mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
|
| 694 |
|
|
IEEE80211_STYPE_DISASSOC);
|
| 695 |
|
|
skb_put(skb, 2);
|
| 696 |
|
|
mgmt->u.disassoc.reason_code = cpu_to_le16(reason);
|
| 697 |
|
|
|
| 698 |
|
|
ieee80211_sta_tx(dev, skb, 0);
|
| 699 |
|
|
}
|
| 700 |
|
|
|
| 701 |
|
|
|
| 702 |
|
|
static int ieee80211_privacy_mismatch(struct net_device *dev,
|
| 703 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 704 |
|
|
{
|
| 705 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 706 |
|
|
struct ieee80211_sta_bss *bss;
|
| 707 |
|
|
int bss_privacy;
|
| 708 |
|
|
int wep_privacy;
|
| 709 |
|
|
int privacy_invoked;
|
| 710 |
|
|
|
| 711 |
|
|
if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL))
|
| 712 |
|
|
return 0;
|
| 713 |
|
|
|
| 714 |
|
|
bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel,
|
| 715 |
|
|
ifsta->ssid, ifsta->ssid_len);
|
| 716 |
|
|
if (!bss)
|
| 717 |
|
|
return 0;
|
| 718 |
|
|
|
| 719 |
|
|
bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY);
|
| 720 |
|
|
wep_privacy = !!ieee80211_sta_wep_configured(dev);
|
| 721 |
|
|
privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED);
|
| 722 |
|
|
|
| 723 |
|
|
ieee80211_rx_bss_put(dev, bss);
|
| 724 |
|
|
|
| 725 |
|
|
if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked))
|
| 726 |
|
|
return 0;
|
| 727 |
|
|
|
| 728 |
|
|
return 1;
|
| 729 |
|
|
}
|
| 730 |
|
|
|
| 731 |
|
|
|
| 732 |
|
|
static void ieee80211_associate(struct net_device *dev,
|
| 733 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 734 |
|
|
{
|
| 735 |
|
|
DECLARE_MAC_BUF(mac);
|
| 736 |
|
|
|
| 737 |
|
|
ifsta->assoc_tries++;
|
| 738 |
|
|
if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
|
| 739 |
|
|
printk(KERN_DEBUG "%s: association with AP %s"
|
| 740 |
|
|
" timed out\n",
|
| 741 |
|
|
dev->name, print_mac(mac, ifsta->bssid));
|
| 742 |
|
|
ifsta->state = IEEE80211_DISABLED;
|
| 743 |
|
|
return;
|
| 744 |
|
|
}
|
| 745 |
|
|
|
| 746 |
|
|
ifsta->state = IEEE80211_ASSOCIATE;
|
| 747 |
|
|
printk(KERN_DEBUG "%s: associate with AP %s\n",
|
| 748 |
|
|
dev->name, print_mac(mac, ifsta->bssid));
|
| 749 |
|
|
if (ieee80211_privacy_mismatch(dev, ifsta)) {
|
| 750 |
|
|
printk(KERN_DEBUG "%s: mismatch in privacy configuration and "
|
| 751 |
|
|
"mixed-cell disabled - abort association\n", dev->name);
|
| 752 |
|
|
ifsta->state = IEEE80211_DISABLED;
|
| 753 |
|
|
return;
|
| 754 |
|
|
}
|
| 755 |
|
|
|
| 756 |
|
|
ieee80211_send_assoc(dev, ifsta);
|
| 757 |
|
|
|
| 758 |
|
|
mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
|
| 759 |
|
|
}
|
| 760 |
|
|
|
| 761 |
|
|
|
| 762 |
|
|
static void ieee80211_associated(struct net_device *dev,
|
| 763 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 764 |
|
|
{
|
| 765 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 766 |
|
|
struct sta_info *sta;
|
| 767 |
|
|
int disassoc;
|
| 768 |
|
|
DECLARE_MAC_BUF(mac);
|
| 769 |
|
|
|
| 770 |
|
|
/* TODO: start monitoring current AP signal quality and number of
|
| 771 |
|
|
* missed beacons. Scan other channels every now and then and search
|
| 772 |
|
|
* for better APs. */
|
| 773 |
|
|
/* TODO: remove expired BSSes */
|
| 774 |
|
|
|
| 775 |
|
|
ifsta->state = IEEE80211_ASSOCIATED;
|
| 776 |
|
|
|
| 777 |
|
|
sta = sta_info_get(local, ifsta->bssid);
|
| 778 |
|
|
if (!sta) {
|
| 779 |
|
|
printk(KERN_DEBUG "%s: No STA entry for own AP %s\n",
|
| 780 |
|
|
dev->name, print_mac(mac, ifsta->bssid));
|
| 781 |
|
|
disassoc = 1;
|
| 782 |
|
|
} else {
|
| 783 |
|
|
disassoc = 0;
|
| 784 |
|
|
if (time_after(jiffies,
|
| 785 |
|
|
sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
|
| 786 |
|
|
if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) {
|
| 787 |
|
|
printk(KERN_DEBUG "%s: No ProbeResp from "
|
| 788 |
|
|
"current AP %s - assume out of "
|
| 789 |
|
|
"range\n",
|
| 790 |
|
|
dev->name, print_mac(mac, ifsta->bssid));
|
| 791 |
|
|
disassoc = 1;
|
| 792 |
|
|
sta_info_free(sta);
|
| 793 |
|
|
} else
|
| 794 |
|
|
ieee80211_send_probe_req(dev, ifsta->bssid,
|
| 795 |
|
|
local->scan_ssid,
|
| 796 |
|
|
local->scan_ssid_len);
|
| 797 |
|
|
ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL;
|
| 798 |
|
|
} else {
|
| 799 |
|
|
ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
|
| 800 |
|
|
if (time_after(jiffies, ifsta->last_probe +
|
| 801 |
|
|
IEEE80211_PROBE_INTERVAL)) {
|
| 802 |
|
|
ifsta->last_probe = jiffies;
|
| 803 |
|
|
ieee80211_send_probe_req(dev, ifsta->bssid,
|
| 804 |
|
|
ifsta->ssid,
|
| 805 |
|
|
ifsta->ssid_len);
|
| 806 |
|
|
}
|
| 807 |
|
|
}
|
| 808 |
|
|
sta_info_put(sta);
|
| 809 |
|
|
}
|
| 810 |
|
|
if (disassoc) {
|
| 811 |
|
|
ifsta->state = IEEE80211_DISABLED;
|
| 812 |
|
|
ieee80211_set_associated(dev, ifsta, 0);
|
| 813 |
|
|
} else {
|
| 814 |
|
|
mod_timer(&ifsta->timer, jiffies +
|
| 815 |
|
|
IEEE80211_MONITORING_INTERVAL);
|
| 816 |
|
|
}
|
| 817 |
|
|
}
|
| 818 |
|
|
|
| 819 |
|
|
|
| 820 |
|
|
static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
|
| 821 |
|
|
u8 *ssid, size_t ssid_len)
|
| 822 |
|
|
{
|
| 823 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 824 |
|
|
struct ieee80211_hw_mode *mode;
|
| 825 |
|
|
struct sk_buff *skb;
|
| 826 |
|
|
struct ieee80211_mgmt *mgmt;
|
| 827 |
|
|
u8 *pos, *supp_rates, *esupp_rates = NULL;
|
| 828 |
|
|
int i;
|
| 829 |
|
|
|
| 830 |
|
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200);
|
| 831 |
|
|
if (!skb) {
|
| 832 |
|
|
printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
|
| 833 |
|
|
"request\n", dev->name);
|
| 834 |
|
|
return;
|
| 835 |
|
|
}
|
| 836 |
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
| 837 |
|
|
|
| 838 |
|
|
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
|
| 839 |
|
|
memset(mgmt, 0, 24);
|
| 840 |
|
|
mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
|
| 841 |
|
|
IEEE80211_STYPE_PROBE_REQ);
|
| 842 |
|
|
memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
|
| 843 |
|
|
if (dst) {
|
| 844 |
|
|
memcpy(mgmt->da, dst, ETH_ALEN);
|
| 845 |
|
|
memcpy(mgmt->bssid, dst, ETH_ALEN);
|
| 846 |
|
|
} else {
|
| 847 |
|
|
memset(mgmt->da, 0xff, ETH_ALEN);
|
| 848 |
|
|
memset(mgmt->bssid, 0xff, ETH_ALEN);
|
| 849 |
|
|
}
|
| 850 |
|
|
pos = skb_put(skb, 2 + ssid_len);
|
| 851 |
|
|
*pos++ = WLAN_EID_SSID;
|
| 852 |
|
|
*pos++ = ssid_len;
|
| 853 |
|
|
memcpy(pos, ssid, ssid_len);
|
| 854 |
|
|
|
| 855 |
|
|
supp_rates = skb_put(skb, 2);
|
| 856 |
|
|
supp_rates[0] = WLAN_EID_SUPP_RATES;
|
| 857 |
|
|
supp_rates[1] = 0;
|
| 858 |
|
|
mode = local->oper_hw_mode;
|
| 859 |
|
|
for (i = 0; i < mode->num_rates; i++) {
|
| 860 |
|
|
struct ieee80211_rate *rate = &mode->rates[i];
|
| 861 |
|
|
if (!(rate->flags & IEEE80211_RATE_SUPPORTED))
|
| 862 |
|
|
continue;
|
| 863 |
|
|
if (esupp_rates) {
|
| 864 |
|
|
pos = skb_put(skb, 1);
|
| 865 |
|
|
esupp_rates[1]++;
|
| 866 |
|
|
} else if (supp_rates[1] == 8) {
|
| 867 |
|
|
esupp_rates = skb_put(skb, 3);
|
| 868 |
|
|
esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
|
| 869 |
|
|
esupp_rates[1] = 1;
|
| 870 |
|
|
pos = &esupp_rates[2];
|
| 871 |
|
|
} else {
|
| 872 |
|
|
pos = skb_put(skb, 1);
|
| 873 |
|
|
supp_rates[1]++;
|
| 874 |
|
|
}
|
| 875 |
|
|
*pos = rate->rate / 5;
|
| 876 |
|
|
}
|
| 877 |
|
|
|
| 878 |
|
|
ieee80211_sta_tx(dev, skb, 0);
|
| 879 |
|
|
}
|
| 880 |
|
|
|
| 881 |
|
|
|
| 882 |
|
|
static int ieee80211_sta_wep_configured(struct net_device *dev)
|
| 883 |
|
|
{
|
| 884 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 885 |
|
|
if (!sdata || !sdata->default_key ||
|
| 886 |
|
|
sdata->default_key->conf.alg != ALG_WEP)
|
| 887 |
|
|
return 0;
|
| 888 |
|
|
return 1;
|
| 889 |
|
|
}
|
| 890 |
|
|
|
| 891 |
|
|
|
| 892 |
|
|
static void ieee80211_auth_completed(struct net_device *dev,
|
| 893 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 894 |
|
|
{
|
| 895 |
|
|
printk(KERN_DEBUG "%s: authenticated\n", dev->name);
|
| 896 |
|
|
ifsta->flags |= IEEE80211_STA_AUTHENTICATED;
|
| 897 |
|
|
ieee80211_associate(dev, ifsta);
|
| 898 |
|
|
}
|
| 899 |
|
|
|
| 900 |
|
|
|
| 901 |
|
|
static void ieee80211_auth_challenge(struct net_device *dev,
|
| 902 |
|
|
struct ieee80211_if_sta *ifsta,
|
| 903 |
|
|
struct ieee80211_mgmt *mgmt,
|
| 904 |
|
|
size_t len)
|
| 905 |
|
|
{
|
| 906 |
|
|
u8 *pos;
|
| 907 |
|
|
struct ieee802_11_elems elems;
|
| 908 |
|
|
|
| 909 |
|
|
printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name);
|
| 910 |
|
|
pos = mgmt->u.auth.variable;
|
| 911 |
|
|
ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
|
| 912 |
|
|
if (!elems.challenge) {
|
| 913 |
|
|
printk(KERN_DEBUG "%s: no challenge IE in shared key auth "
|
| 914 |
|
|
"frame\n", dev->name);
|
| 915 |
|
|
return;
|
| 916 |
|
|
}
|
| 917 |
|
|
ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2,
|
| 918 |
|
|
elems.challenge_len + 2, 1);
|
| 919 |
|
|
}
|
| 920 |
|
|
|
| 921 |
|
|
|
| 922 |
|
|
static void ieee80211_rx_mgmt_auth(struct net_device *dev,
|
| 923 |
|
|
struct ieee80211_if_sta *ifsta,
|
| 924 |
|
|
struct ieee80211_mgmt *mgmt,
|
| 925 |
|
|
size_t len)
|
| 926 |
|
|
{
|
| 927 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 928 |
|
|
u16 auth_alg, auth_transaction, status_code;
|
| 929 |
|
|
DECLARE_MAC_BUF(mac);
|
| 930 |
|
|
|
| 931 |
|
|
if (ifsta->state != IEEE80211_AUTHENTICATE &&
|
| 932 |
|
|
sdata->type != IEEE80211_IF_TYPE_IBSS) {
|
| 933 |
|
|
printk(KERN_DEBUG "%s: authentication frame received from "
|
| 934 |
|
|
"%s, but not in authenticate state - ignored\n",
|
| 935 |
|
|
dev->name, print_mac(mac, mgmt->sa));
|
| 936 |
|
|
return;
|
| 937 |
|
|
}
|
| 938 |
|
|
|
| 939 |
|
|
if (len < 24 + 6) {
|
| 940 |
|
|
printk(KERN_DEBUG "%s: too short (%zd) authentication frame "
|
| 941 |
|
|
"received from %s - ignored\n",
|
| 942 |
|
|
dev->name, len, print_mac(mac, mgmt->sa));
|
| 943 |
|
|
return;
|
| 944 |
|
|
}
|
| 945 |
|
|
|
| 946 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_IBSS &&
|
| 947 |
|
|
memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
|
| 948 |
|
|
printk(KERN_DEBUG "%s: authentication frame received from "
|
| 949 |
|
|
"unknown AP (SA=%s BSSID=%s) - "
|
| 950 |
|
|
"ignored\n", dev->name, print_mac(mac, mgmt->sa),
|
| 951 |
|
|
print_mac(mac, mgmt->bssid));
|
| 952 |
|
|
return;
|
| 953 |
|
|
}
|
| 954 |
|
|
|
| 955 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_IBSS &&
|
| 956 |
|
|
memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) {
|
| 957 |
|
|
printk(KERN_DEBUG "%s: authentication frame received from "
|
| 958 |
|
|
"unknown BSSID (SA=%s BSSID=%s) - "
|
| 959 |
|
|
"ignored\n", dev->name, print_mac(mac, mgmt->sa),
|
| 960 |
|
|
print_mac(mac, mgmt->bssid));
|
| 961 |
|
|
return;
|
| 962 |
|
|
}
|
| 963 |
|
|
|
| 964 |
|
|
auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
|
| 965 |
|
|
auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
|
| 966 |
|
|
status_code = le16_to_cpu(mgmt->u.auth.status_code);
|
| 967 |
|
|
|
| 968 |
|
|
printk(KERN_DEBUG "%s: RX authentication from %s (alg=%d "
|
| 969 |
|
|
"transaction=%d status=%d)\n",
|
| 970 |
|
|
dev->name, print_mac(mac, mgmt->sa), auth_alg,
|
| 971 |
|
|
auth_transaction, status_code);
|
| 972 |
|
|
|
| 973 |
|
|
if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
|
| 974 |
|
|
/* IEEE 802.11 standard does not require authentication in IBSS
|
| 975 |
|
|
* networks and most implementations do not seem to use it.
|
| 976 |
|
|
* However, try to reply to authentication attempts if someone
|
| 977 |
|
|
* has actually implemented this.
|
| 978 |
|
|
* TODO: Could implement shared key authentication. */
|
| 979 |
|
|
if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
|
| 980 |
|
|
printk(KERN_DEBUG "%s: unexpected IBSS authentication "
|
| 981 |
|
|
"frame (alg=%d transaction=%d)\n",
|
| 982 |
|
|
dev->name, auth_alg, auth_transaction);
|
| 983 |
|
|
return;
|
| 984 |
|
|
}
|
| 985 |
|
|
ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0);
|
| 986 |
|
|
}
|
| 987 |
|
|
|
| 988 |
|
|
if (auth_alg != ifsta->auth_alg ||
|
| 989 |
|
|
auth_transaction != ifsta->auth_transaction) {
|
| 990 |
|
|
printk(KERN_DEBUG "%s: unexpected authentication frame "
|
| 991 |
|
|
"(alg=%d transaction=%d)\n",
|
| 992 |
|
|
dev->name, auth_alg, auth_transaction);
|
| 993 |
|
|
return;
|
| 994 |
|
|
}
|
| 995 |
|
|
|
| 996 |
|
|
if (status_code != WLAN_STATUS_SUCCESS) {
|
| 997 |
|
|
printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d "
|
| 998 |
|
|
"code=%d)\n", dev->name, ifsta->auth_alg, status_code);
|
| 999 |
|
|
if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
|
| 1000 |
|
|
u8 algs[3];
|
| 1001 |
|
|
const int num_algs = ARRAY_SIZE(algs);
|
| 1002 |
|
|
int i, pos;
|
| 1003 |
|
|
algs[0] = algs[1] = algs[2] = 0xff;
|
| 1004 |
|
|
if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
|
| 1005 |
|
|
algs[0] = WLAN_AUTH_OPEN;
|
| 1006 |
|
|
if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
|
| 1007 |
|
|
algs[1] = WLAN_AUTH_SHARED_KEY;
|
| 1008 |
|
|
if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
|
| 1009 |
|
|
algs[2] = WLAN_AUTH_LEAP;
|
| 1010 |
|
|
if (ifsta->auth_alg == WLAN_AUTH_OPEN)
|
| 1011 |
|
|
pos = 0;
|
| 1012 |
|
|
else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY)
|
| 1013 |
|
|
pos = 1;
|
| 1014 |
|
|
else
|
| 1015 |
|
|
pos = 2;
|
| 1016 |
|
|
for (i = 0; i < num_algs; i++) {
|
| 1017 |
|
|
pos++;
|
| 1018 |
|
|
if (pos >= num_algs)
|
| 1019 |
|
|
pos = 0;
|
| 1020 |
|
|
if (algs[pos] == ifsta->auth_alg ||
|
| 1021 |
|
|
algs[pos] == 0xff)
|
| 1022 |
|
|
continue;
|
| 1023 |
|
|
if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
|
| 1024 |
|
|
!ieee80211_sta_wep_configured(dev))
|
| 1025 |
|
|
continue;
|
| 1026 |
|
|
ifsta->auth_alg = algs[pos];
|
| 1027 |
|
|
printk(KERN_DEBUG "%s: set auth_alg=%d for "
|
| 1028 |
|
|
"next try\n",
|
| 1029 |
|
|
dev->name, ifsta->auth_alg);
|
| 1030 |
|
|
break;
|
| 1031 |
|
|
}
|
| 1032 |
|
|
}
|
| 1033 |
|
|
return;
|
| 1034 |
|
|
}
|
| 1035 |
|
|
|
| 1036 |
|
|
switch (ifsta->auth_alg) {
|
| 1037 |
|
|
case WLAN_AUTH_OPEN:
|
| 1038 |
|
|
case WLAN_AUTH_LEAP:
|
| 1039 |
|
|
ieee80211_auth_completed(dev, ifsta);
|
| 1040 |
|
|
break;
|
| 1041 |
|
|
case WLAN_AUTH_SHARED_KEY:
|
| 1042 |
|
|
if (ifsta->auth_transaction == 4)
|
| 1043 |
|
|
ieee80211_auth_completed(dev, ifsta);
|
| 1044 |
|
|
else
|
| 1045 |
|
|
ieee80211_auth_challenge(dev, ifsta, mgmt, len);
|
| 1046 |
|
|
break;
|
| 1047 |
|
|
}
|
| 1048 |
|
|
}
|
| 1049 |
|
|
|
| 1050 |
|
|
|
| 1051 |
|
|
static void ieee80211_rx_mgmt_deauth(struct net_device *dev,
|
| 1052 |
|
|
struct ieee80211_if_sta *ifsta,
|
| 1053 |
|
|
struct ieee80211_mgmt *mgmt,
|
| 1054 |
|
|
size_t len)
|
| 1055 |
|
|
{
|
| 1056 |
|
|
u16 reason_code;
|
| 1057 |
|
|
DECLARE_MAC_BUF(mac);
|
| 1058 |
|
|
|
| 1059 |
|
|
if (len < 24 + 2) {
|
| 1060 |
|
|
printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame "
|
| 1061 |
|
|
"received from %s - ignored\n",
|
| 1062 |
|
|
dev->name, len, print_mac(mac, mgmt->sa));
|
| 1063 |
|
|
return;
|
| 1064 |
|
|
}
|
| 1065 |
|
|
|
| 1066 |
|
|
if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
|
| 1067 |
|
|
printk(KERN_DEBUG "%s: deauthentication frame received from "
|
| 1068 |
|
|
"unknown AP (SA=%s BSSID=%s) - "
|
| 1069 |
|
|
"ignored\n", dev->name, print_mac(mac, mgmt->sa),
|
| 1070 |
|
|
print_mac(mac, mgmt->bssid));
|
| 1071 |
|
|
return;
|
| 1072 |
|
|
}
|
| 1073 |
|
|
|
| 1074 |
|
|
reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
|
| 1075 |
|
|
|
| 1076 |
|
|
printk(KERN_DEBUG "%s: RX deauthentication from %s"
|
| 1077 |
|
|
" (reason=%d)\n",
|
| 1078 |
|
|
dev->name, print_mac(mac, mgmt->sa), reason_code);
|
| 1079 |
|
|
|
| 1080 |
|
|
if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) {
|
| 1081 |
|
|
printk(KERN_DEBUG "%s: deauthenticated\n", dev->name);
|
| 1082 |
|
|
}
|
| 1083 |
|
|
|
| 1084 |
|
|
if (ifsta->state == IEEE80211_AUTHENTICATE ||
|
| 1085 |
|
|
ifsta->state == IEEE80211_ASSOCIATE ||
|
| 1086 |
|
|
ifsta->state == IEEE80211_ASSOCIATED) {
|
| 1087 |
|
|
ifsta->state = IEEE80211_AUTHENTICATE;
|
| 1088 |
|
|
mod_timer(&ifsta->timer, jiffies +
|
| 1089 |
|
|
IEEE80211_RETRY_AUTH_INTERVAL);
|
| 1090 |
|
|
}
|
| 1091 |
|
|
|
| 1092 |
|
|
ieee80211_set_disassoc(dev, ifsta, 1);
|
| 1093 |
|
|
ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED;
|
| 1094 |
|
|
}
|
| 1095 |
|
|
|
| 1096 |
|
|
|
| 1097 |
|
|
static void ieee80211_rx_mgmt_disassoc(struct net_device *dev,
|
| 1098 |
|
|
struct ieee80211_if_sta *ifsta,
|
| 1099 |
|
|
struct ieee80211_mgmt *mgmt,
|
| 1100 |
|
|
size_t len)
|
| 1101 |
|
|
{
|
| 1102 |
|
|
u16 reason_code;
|
| 1103 |
|
|
DECLARE_MAC_BUF(mac);
|
| 1104 |
|
|
|
| 1105 |
|
|
if (len < 24 + 2) {
|
| 1106 |
|
|
printk(KERN_DEBUG "%s: too short (%zd) disassociation frame "
|
| 1107 |
|
|
"received from %s - ignored\n",
|
| 1108 |
|
|
dev->name, len, print_mac(mac, mgmt->sa));
|
| 1109 |
|
|
return;
|
| 1110 |
|
|
}
|
| 1111 |
|
|
|
| 1112 |
|
|
if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
|
| 1113 |
|
|
printk(KERN_DEBUG "%s: disassociation frame received from "
|
| 1114 |
|
|
"unknown AP (SA=%s BSSID=%s) - "
|
| 1115 |
|
|
"ignored\n", dev->name, print_mac(mac, mgmt->sa),
|
| 1116 |
|
|
print_mac(mac, mgmt->bssid));
|
| 1117 |
|
|
return;
|
| 1118 |
|
|
}
|
| 1119 |
|
|
|
| 1120 |
|
|
reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
|
| 1121 |
|
|
|
| 1122 |
|
|
printk(KERN_DEBUG "%s: RX disassociation from %s"
|
| 1123 |
|
|
" (reason=%d)\n",
|
| 1124 |
|
|
dev->name, print_mac(mac, mgmt->sa), reason_code);
|
| 1125 |
|
|
|
| 1126 |
|
|
if (ifsta->flags & IEEE80211_STA_ASSOCIATED)
|
| 1127 |
|
|
printk(KERN_DEBUG "%s: disassociated\n", dev->name);
|
| 1128 |
|
|
|
| 1129 |
|
|
if (ifsta->state == IEEE80211_ASSOCIATED) {
|
| 1130 |
|
|
ifsta->state = IEEE80211_ASSOCIATE;
|
| 1131 |
|
|
mod_timer(&ifsta->timer, jiffies +
|
| 1132 |
|
|
IEEE80211_RETRY_AUTH_INTERVAL);
|
| 1133 |
|
|
}
|
| 1134 |
|
|
|
| 1135 |
|
|
ieee80211_set_disassoc(dev, ifsta, 0);
|
| 1136 |
|
|
}
|
| 1137 |
|
|
|
| 1138 |
|
|
|
| 1139 |
|
|
static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev,
|
| 1140 |
|
|
struct ieee80211_if_sta *ifsta,
|
| 1141 |
|
|
struct ieee80211_mgmt *mgmt,
|
| 1142 |
|
|
size_t len,
|
| 1143 |
|
|
int reassoc)
|
| 1144 |
|
|
{
|
| 1145 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1146 |
|
|
struct ieee80211_hw_mode *mode;
|
| 1147 |
|
|
struct sta_info *sta;
|
| 1148 |
|
|
u32 rates;
|
| 1149 |
|
|
u16 capab_info, status_code, aid;
|
| 1150 |
|
|
struct ieee802_11_elems elems;
|
| 1151 |
|
|
u8 *pos;
|
| 1152 |
|
|
int i, j;
|
| 1153 |
|
|
DECLARE_MAC_BUF(mac);
|
| 1154 |
|
|
|
| 1155 |
|
|
/* AssocResp and ReassocResp have identical structure, so process both
|
| 1156 |
|
|
* of them in this function. */
|
| 1157 |
|
|
|
| 1158 |
|
|
if (ifsta->state != IEEE80211_ASSOCIATE) {
|
| 1159 |
|
|
printk(KERN_DEBUG "%s: association frame received from "
|
| 1160 |
|
|
"%s, but not in associate state - ignored\n",
|
| 1161 |
|
|
dev->name, print_mac(mac, mgmt->sa));
|
| 1162 |
|
|
return;
|
| 1163 |
|
|
}
|
| 1164 |
|
|
|
| 1165 |
|
|
if (len < 24 + 6) {
|
| 1166 |
|
|
printk(KERN_DEBUG "%s: too short (%zd) association frame "
|
| 1167 |
|
|
"received from %s - ignored\n",
|
| 1168 |
|
|
dev->name, len, print_mac(mac, mgmt->sa));
|
| 1169 |
|
|
return;
|
| 1170 |
|
|
}
|
| 1171 |
|
|
|
| 1172 |
|
|
if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) {
|
| 1173 |
|
|
printk(KERN_DEBUG "%s: association frame received from "
|
| 1174 |
|
|
"unknown AP (SA=%s BSSID=%s) - "
|
| 1175 |
|
|
"ignored\n", dev->name, print_mac(mac, mgmt->sa),
|
| 1176 |
|
|
print_mac(mac, mgmt->bssid));
|
| 1177 |
|
|
return;
|
| 1178 |
|
|
}
|
| 1179 |
|
|
|
| 1180 |
|
|
capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
|
| 1181 |
|
|
status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
|
| 1182 |
|
|
aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
|
| 1183 |
|
|
|
| 1184 |
|
|
printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x "
|
| 1185 |
|
|
"status=%d aid=%d)\n",
|
| 1186 |
|
|
dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa),
|
| 1187 |
|
|
capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
|
| 1188 |
|
|
|
| 1189 |
|
|
if (status_code != WLAN_STATUS_SUCCESS) {
|
| 1190 |
|
|
printk(KERN_DEBUG "%s: AP denied association (code=%d)\n",
|
| 1191 |
|
|
dev->name, status_code);
|
| 1192 |
|
|
/* if this was a reassociation, ensure we try a "full"
|
| 1193 |
|
|
* association next time. This works around some broken APs
|
| 1194 |
|
|
* which do not correctly reject reassociation requests. */
|
| 1195 |
|
|
ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
|
| 1196 |
|
|
return;
|
| 1197 |
|
|
}
|
| 1198 |
|
|
|
| 1199 |
|
|
if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
|
| 1200 |
|
|
printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
|
| 1201 |
|
|
"set\n", dev->name, aid);
|
| 1202 |
|
|
aid &= ~(BIT(15) | BIT(14));
|
| 1203 |
|
|
|
| 1204 |
|
|
pos = mgmt->u.assoc_resp.variable;
|
| 1205 |
|
|
ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
|
| 1206 |
|
|
|
| 1207 |
|
|
if (!elems.supp_rates) {
|
| 1208 |
|
|
printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
|
| 1209 |
|
|
dev->name);
|
| 1210 |
|
|
return;
|
| 1211 |
|
|
}
|
| 1212 |
|
|
|
| 1213 |
|
|
/* it probably doesn't, but if the frame includes an ERP value then
|
| 1214 |
|
|
* update our stored copy */
|
| 1215 |
|
|
if (elems.erp_info && elems.erp_info_len >= 1) {
|
| 1216 |
|
|
struct ieee80211_sta_bss *bss
|
| 1217 |
|
|
= ieee80211_rx_bss_get(dev, ifsta->bssid,
|
| 1218 |
|
|
local->hw.conf.channel,
|
| 1219 |
|
|
ifsta->ssid, ifsta->ssid_len);
|
| 1220 |
|
|
if (bss) {
|
| 1221 |
|
|
bss->erp_value = elems.erp_info[0];
|
| 1222 |
|
|
bss->has_erp_value = 1;
|
| 1223 |
|
|
ieee80211_rx_bss_put(dev, bss);
|
| 1224 |
|
|
}
|
| 1225 |
|
|
}
|
| 1226 |
|
|
|
| 1227 |
|
|
printk(KERN_DEBUG "%s: associated\n", dev->name);
|
| 1228 |
|
|
ifsta->aid = aid;
|
| 1229 |
|
|
ifsta->ap_capab = capab_info;
|
| 1230 |
|
|
|
| 1231 |
|
|
kfree(ifsta->assocresp_ies);
|
| 1232 |
|
|
ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt);
|
| 1233 |
|
|
ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL);
|
| 1234 |
|
|
if (ifsta->assocresp_ies)
|
| 1235 |
|
|
memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len);
|
| 1236 |
|
|
|
| 1237 |
|
|
ieee80211_set_associated(dev, ifsta, 1);
|
| 1238 |
|
|
|
| 1239 |
|
|
/* Add STA entry for the AP */
|
| 1240 |
|
|
sta = sta_info_get(local, ifsta->bssid);
|
| 1241 |
|
|
if (!sta) {
|
| 1242 |
|
|
struct ieee80211_sta_bss *bss;
|
| 1243 |
|
|
sta = sta_info_add(local, dev, ifsta->bssid, GFP_KERNEL);
|
| 1244 |
|
|
if (!sta) {
|
| 1245 |
|
|
printk(KERN_DEBUG "%s: failed to add STA entry for the"
|
| 1246 |
|
|
" AP\n", dev->name);
|
| 1247 |
|
|
return;
|
| 1248 |
|
|
}
|
| 1249 |
|
|
bss = ieee80211_rx_bss_get(dev, ifsta->bssid,
|
| 1250 |
|
|
local->hw.conf.channel,
|
| 1251 |
|
|
ifsta->ssid, ifsta->ssid_len);
|
| 1252 |
|
|
if (bss) {
|
| 1253 |
|
|
sta->last_rssi = bss->rssi;
|
| 1254 |
|
|
sta->last_signal = bss->signal;
|
| 1255 |
|
|
sta->last_noise = bss->noise;
|
| 1256 |
|
|
ieee80211_rx_bss_put(dev, bss);
|
| 1257 |
|
|
}
|
| 1258 |
|
|
}
|
| 1259 |
|
|
|
| 1260 |
|
|
sta->dev = dev;
|
| 1261 |
|
|
sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP;
|
| 1262 |
|
|
|
| 1263 |
|
|
rates = 0;
|
| 1264 |
|
|
mode = local->oper_hw_mode;
|
| 1265 |
|
|
for (i = 0; i < elems.supp_rates_len; i++) {
|
| 1266 |
|
|
int rate = (elems.supp_rates[i] & 0x7f) * 5;
|
| 1267 |
|
|
for (j = 0; j < mode->num_rates; j++)
|
| 1268 |
|
|
if (mode->rates[j].rate == rate)
|
| 1269 |
|
|
rates |= BIT(j);
|
| 1270 |
|
|
}
|
| 1271 |
|
|
for (i = 0; i < elems.ext_supp_rates_len; i++) {
|
| 1272 |
|
|
int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
|
| 1273 |
|
|
for (j = 0; j < mode->num_rates; j++)
|
| 1274 |
|
|
if (mode->rates[j].rate == rate)
|
| 1275 |
|
|
rates |= BIT(j);
|
| 1276 |
|
|
}
|
| 1277 |
|
|
sta->supp_rates = rates;
|
| 1278 |
|
|
|
| 1279 |
|
|
rate_control_rate_init(sta, local);
|
| 1280 |
|
|
|
| 1281 |
|
|
if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
|
| 1282 |
|
|
sta->flags |= WLAN_STA_WME;
|
| 1283 |
|
|
ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
|
| 1284 |
|
|
elems.wmm_param_len);
|
| 1285 |
|
|
}
|
| 1286 |
|
|
|
| 1287 |
|
|
|
| 1288 |
|
|
sta_info_put(sta);
|
| 1289 |
|
|
|
| 1290 |
|
|
ieee80211_associated(dev, ifsta);
|
| 1291 |
|
|
}
|
| 1292 |
|
|
|
| 1293 |
|
|
|
| 1294 |
|
|
/* Caller must hold local->sta_bss_lock */
|
| 1295 |
|
|
static void __ieee80211_rx_bss_hash_add(struct net_device *dev,
|
| 1296 |
|
|
struct ieee80211_sta_bss *bss)
|
| 1297 |
|
|
{
|
| 1298 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1299 |
|
|
bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)];
|
| 1300 |
|
|
local->sta_bss_hash[STA_HASH(bss->bssid)] = bss;
|
| 1301 |
|
|
}
|
| 1302 |
|
|
|
| 1303 |
|
|
|
| 1304 |
|
|
/* Caller must hold local->sta_bss_lock */
|
| 1305 |
|
|
static void __ieee80211_rx_bss_hash_del(struct net_device *dev,
|
| 1306 |
|
|
struct ieee80211_sta_bss *bss)
|
| 1307 |
|
|
{
|
| 1308 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1309 |
|
|
struct ieee80211_sta_bss *b, *prev = NULL;
|
| 1310 |
|
|
b = local->sta_bss_hash[STA_HASH(bss->bssid)];
|
| 1311 |
|
|
while (b) {
|
| 1312 |
|
|
if (b == bss) {
|
| 1313 |
|
|
if (!prev)
|
| 1314 |
|
|
local->sta_bss_hash[STA_HASH(bss->bssid)] =
|
| 1315 |
|
|
bss->hnext;
|
| 1316 |
|
|
else
|
| 1317 |
|
|
prev->hnext = bss->hnext;
|
| 1318 |
|
|
break;
|
| 1319 |
|
|
}
|
| 1320 |
|
|
prev = b;
|
| 1321 |
|
|
b = b->hnext;
|
| 1322 |
|
|
}
|
| 1323 |
|
|
}
|
| 1324 |
|
|
|
| 1325 |
|
|
|
| 1326 |
|
|
static struct ieee80211_sta_bss *
|
| 1327 |
|
|
ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel,
|
| 1328 |
|
|
u8 *ssid, u8 ssid_len)
|
| 1329 |
|
|
{
|
| 1330 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1331 |
|
|
struct ieee80211_sta_bss *bss;
|
| 1332 |
|
|
|
| 1333 |
|
|
bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
|
| 1334 |
|
|
if (!bss)
|
| 1335 |
|
|
return NULL;
|
| 1336 |
|
|
atomic_inc(&bss->users);
|
| 1337 |
|
|
atomic_inc(&bss->users);
|
| 1338 |
|
|
memcpy(bss->bssid, bssid, ETH_ALEN);
|
| 1339 |
|
|
bss->channel = channel;
|
| 1340 |
|
|
if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
|
| 1341 |
|
|
memcpy(bss->ssid, ssid, ssid_len);
|
| 1342 |
|
|
bss->ssid_len = ssid_len;
|
| 1343 |
|
|
}
|
| 1344 |
|
|
|
| 1345 |
|
|
spin_lock_bh(&local->sta_bss_lock);
|
| 1346 |
|
|
/* TODO: order by RSSI? */
|
| 1347 |
|
|
list_add_tail(&bss->list, &local->sta_bss_list);
|
| 1348 |
|
|
__ieee80211_rx_bss_hash_add(dev, bss);
|
| 1349 |
|
|
spin_unlock_bh(&local->sta_bss_lock);
|
| 1350 |
|
|
return bss;
|
| 1351 |
|
|
}
|
| 1352 |
|
|
|
| 1353 |
|
|
|
| 1354 |
|
|
static struct ieee80211_sta_bss *
|
| 1355 |
|
|
ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel,
|
| 1356 |
|
|
u8 *ssid, u8 ssid_len)
|
| 1357 |
|
|
{
|
| 1358 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1359 |
|
|
struct ieee80211_sta_bss *bss;
|
| 1360 |
|
|
|
| 1361 |
|
|
spin_lock_bh(&local->sta_bss_lock);
|
| 1362 |
|
|
bss = local->sta_bss_hash[STA_HASH(bssid)];
|
| 1363 |
|
|
while (bss) {
|
| 1364 |
|
|
if (!memcmp(bss->bssid, bssid, ETH_ALEN) &&
|
| 1365 |
|
|
bss->channel == channel &&
|
| 1366 |
|
|
bss->ssid_len == ssid_len &&
|
| 1367 |
|
|
(ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
|
| 1368 |
|
|
atomic_inc(&bss->users);
|
| 1369 |
|
|
break;
|
| 1370 |
|
|
}
|
| 1371 |
|
|
bss = bss->hnext;
|
| 1372 |
|
|
}
|
| 1373 |
|
|
spin_unlock_bh(&local->sta_bss_lock);
|
| 1374 |
|
|
return bss;
|
| 1375 |
|
|
}
|
| 1376 |
|
|
|
| 1377 |
|
|
|
| 1378 |
|
|
static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
|
| 1379 |
|
|
{
|
| 1380 |
|
|
kfree(bss->wpa_ie);
|
| 1381 |
|
|
kfree(bss->rsn_ie);
|
| 1382 |
|
|
kfree(bss->wmm_ie);
|
| 1383 |
|
|
kfree(bss);
|
| 1384 |
|
|
}
|
| 1385 |
|
|
|
| 1386 |
|
|
|
| 1387 |
|
|
static void ieee80211_rx_bss_put(struct net_device *dev,
|
| 1388 |
|
|
struct ieee80211_sta_bss *bss)
|
| 1389 |
|
|
{
|
| 1390 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1391 |
|
|
if (!atomic_dec_and_test(&bss->users))
|
| 1392 |
|
|
return;
|
| 1393 |
|
|
|
| 1394 |
|
|
spin_lock_bh(&local->sta_bss_lock);
|
| 1395 |
|
|
__ieee80211_rx_bss_hash_del(dev, bss);
|
| 1396 |
|
|
list_del(&bss->list);
|
| 1397 |
|
|
spin_unlock_bh(&local->sta_bss_lock);
|
| 1398 |
|
|
ieee80211_rx_bss_free(bss);
|
| 1399 |
|
|
}
|
| 1400 |
|
|
|
| 1401 |
|
|
|
| 1402 |
|
|
void ieee80211_rx_bss_list_init(struct net_device *dev)
|
| 1403 |
|
|
{
|
| 1404 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1405 |
|
|
spin_lock_init(&local->sta_bss_lock);
|
| 1406 |
|
|
INIT_LIST_HEAD(&local->sta_bss_list);
|
| 1407 |
|
|
}
|
| 1408 |
|
|
|
| 1409 |
|
|
|
| 1410 |
|
|
void ieee80211_rx_bss_list_deinit(struct net_device *dev)
|
| 1411 |
|
|
{
|
| 1412 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1413 |
|
|
struct ieee80211_sta_bss *bss, *tmp;
|
| 1414 |
|
|
|
| 1415 |
|
|
list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list)
|
| 1416 |
|
|
ieee80211_rx_bss_put(dev, bss);
|
| 1417 |
|
|
}
|
| 1418 |
|
|
|
| 1419 |
|
|
|
| 1420 |
|
|
static void ieee80211_rx_bss_info(struct net_device *dev,
|
| 1421 |
|
|
struct ieee80211_mgmt *mgmt,
|
| 1422 |
|
|
size_t len,
|
| 1423 |
|
|
struct ieee80211_rx_status *rx_status,
|
| 1424 |
|
|
int beacon)
|
| 1425 |
|
|
{
|
| 1426 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1427 |
|
|
struct ieee802_11_elems elems;
|
| 1428 |
|
|
size_t baselen;
|
| 1429 |
|
|
int channel, clen;
|
| 1430 |
|
|
struct ieee80211_sta_bss *bss;
|
| 1431 |
|
|
struct sta_info *sta;
|
| 1432 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 1433 |
|
|
u64 timestamp;
|
| 1434 |
|
|
DECLARE_MAC_BUF(mac);
|
| 1435 |
|
|
DECLARE_MAC_BUF(mac2);
|
| 1436 |
|
|
|
| 1437 |
|
|
if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN))
|
| 1438 |
|
|
return; /* ignore ProbeResp to foreign address */
|
| 1439 |
|
|
|
| 1440 |
|
|
#if 0
|
| 1441 |
|
|
printk(KERN_DEBUG "%s: RX %s from %s to %s\n",
|
| 1442 |
|
|
dev->name, beacon ? "Beacon" : "Probe Response",
|
| 1443 |
|
|
print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da));
|
| 1444 |
|
|
#endif
|
| 1445 |
|
|
|
| 1446 |
|
|
baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
|
| 1447 |
|
|
if (baselen > len)
|
| 1448 |
|
|
return;
|
| 1449 |
|
|
|
| 1450 |
|
|
timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
|
| 1451 |
|
|
|
| 1452 |
|
|
if (sdata->type == IEEE80211_IF_TYPE_IBSS && beacon &&
|
| 1453 |
|
|
memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
|
| 1454 |
|
|
#ifdef CONFIG_MAC80211_IBSS_DEBUG
|
| 1455 |
|
|
static unsigned long last_tsf_debug = 0;
|
| 1456 |
|
|
u64 tsf;
|
| 1457 |
|
|
if (local->ops->get_tsf)
|
| 1458 |
|
|
tsf = local->ops->get_tsf(local_to_hw(local));
|
| 1459 |
|
|
else
|
| 1460 |
|
|
tsf = -1LLU;
|
| 1461 |
|
|
if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
|
| 1462 |
|
|
printk(KERN_DEBUG "RX beacon SA=%s BSSID="
|
| 1463 |
|
|
"%s TSF=0x%llx BCN=0x%llx diff=%lld "
|
| 1464 |
|
|
"@%lu\n",
|
| 1465 |
|
|
print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->bssid),
|
| 1466 |
|
|
(unsigned long long)tsf,
|
| 1467 |
|
|
(unsigned long long)timestamp,
|
| 1468 |
|
|
(unsigned long long)(tsf - timestamp),
|
| 1469 |
|
|
jiffies);
|
| 1470 |
|
|
last_tsf_debug = jiffies;
|
| 1471 |
|
|
}
|
| 1472 |
|
|
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
|
| 1473 |
|
|
}
|
| 1474 |
|
|
|
| 1475 |
|
|
ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
|
| 1476 |
|
|
|
| 1477 |
|
|
if (sdata->type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates &&
|
| 1478 |
|
|
memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 &&
|
| 1479 |
|
|
(sta = sta_info_get(local, mgmt->sa))) {
|
| 1480 |
|
|
struct ieee80211_hw_mode *mode;
|
| 1481 |
|
|
struct ieee80211_rate *rates;
|
| 1482 |
|
|
size_t num_rates;
|
| 1483 |
|
|
u32 supp_rates, prev_rates;
|
| 1484 |
|
|
int i, j;
|
| 1485 |
|
|
|
| 1486 |
|
|
mode = local->sta_scanning ?
|
| 1487 |
|
|
local->scan_hw_mode : local->oper_hw_mode;
|
| 1488 |
|
|
rates = mode->rates;
|
| 1489 |
|
|
num_rates = mode->num_rates;
|
| 1490 |
|
|
|
| 1491 |
|
|
supp_rates = 0;
|
| 1492 |
|
|
for (i = 0; i < elems.supp_rates_len +
|
| 1493 |
|
|
elems.ext_supp_rates_len; i++) {
|
| 1494 |
|
|
u8 rate = 0;
|
| 1495 |
|
|
int own_rate;
|
| 1496 |
|
|
if (i < elems.supp_rates_len)
|
| 1497 |
|
|
rate = elems.supp_rates[i];
|
| 1498 |
|
|
else if (elems.ext_supp_rates)
|
| 1499 |
|
|
rate = elems.ext_supp_rates
|
| 1500 |
|
|
[i - elems.supp_rates_len];
|
| 1501 |
|
|
own_rate = 5 * (rate & 0x7f);
|
| 1502 |
|
|
for (j = 0; j < num_rates; j++)
|
| 1503 |
|
|
if (rates[j].rate == own_rate)
|
| 1504 |
|
|
supp_rates |= BIT(j);
|
| 1505 |
|
|
}
|
| 1506 |
|
|
|
| 1507 |
|
|
prev_rates = sta->supp_rates;
|
| 1508 |
|
|
sta->supp_rates &= supp_rates;
|
| 1509 |
|
|
if (sta->supp_rates == 0) {
|
| 1510 |
|
|
/* No matching rates - this should not really happen.
|
| 1511 |
|
|
* Make sure that at least one rate is marked
|
| 1512 |
|
|
* supported to avoid issues with TX rate ctrl. */
|
| 1513 |
|
|
sta->supp_rates = sdata->u.sta.supp_rates_bits;
|
| 1514 |
|
|
}
|
| 1515 |
|
|
if (sta->supp_rates != prev_rates) {
|
| 1516 |
|
|
printk(KERN_DEBUG "%s: updated supp_rates set for "
|
| 1517 |
|
|
"%s based on beacon info (0x%x & 0x%x -> "
|
| 1518 |
|
|
"0x%x)\n",
|
| 1519 |
|
|
dev->name, print_mac(mac, sta->addr), prev_rates,
|
| 1520 |
|
|
supp_rates, sta->supp_rates);
|
| 1521 |
|
|
}
|
| 1522 |
|
|
sta_info_put(sta);
|
| 1523 |
|
|
}
|
| 1524 |
|
|
|
| 1525 |
|
|
if (!elems.ssid)
|
| 1526 |
|
|
return;
|
| 1527 |
|
|
|
| 1528 |
|
|
if (elems.ds_params && elems.ds_params_len == 1)
|
| 1529 |
|
|
channel = elems.ds_params[0];
|
| 1530 |
|
|
else
|
| 1531 |
|
|
channel = rx_status->channel;
|
| 1532 |
|
|
|
| 1533 |
|
|
bss = ieee80211_rx_bss_get(dev, mgmt->bssid, channel,
|
| 1534 |
|
|
elems.ssid, elems.ssid_len);
|
| 1535 |
|
|
if (!bss) {
|
| 1536 |
|
|
bss = ieee80211_rx_bss_add(dev, mgmt->bssid, channel,
|
| 1537 |
|
|
elems.ssid, elems.ssid_len);
|
| 1538 |
|
|
if (!bss)
|
| 1539 |
|
|
return;
|
| 1540 |
|
|
} else {
|
| 1541 |
|
|
#if 0
|
| 1542 |
|
|
/* TODO: order by RSSI? */
|
| 1543 |
|
|
spin_lock_bh(&local->sta_bss_lock);
|
| 1544 |
|
|
list_move_tail(&bss->list, &local->sta_bss_list);
|
| 1545 |
|
|
spin_unlock_bh(&local->sta_bss_lock);
|
| 1546 |
|
|
#endif
|
| 1547 |
|
|
}
|
| 1548 |
|
|
|
| 1549 |
|
|
if (bss->probe_resp && beacon) {
|
| 1550 |
|
|
/* Do not allow beacon to override data from Probe Response. */
|
| 1551 |
|
|
ieee80211_rx_bss_put(dev, bss);
|
| 1552 |
|
|
return;
|
| 1553 |
|
|
}
|
| 1554 |
|
|
|
| 1555 |
|
|
/* save the ERP value so that it is available at association time */
|
| 1556 |
|
|
if (elems.erp_info && elems.erp_info_len >= 1) {
|
| 1557 |
|
|
bss->erp_value = elems.erp_info[0];
|
| 1558 |
|
|
bss->has_erp_value = 1;
|
| 1559 |
|
|
}
|
| 1560 |
|
|
|
| 1561 |
|
|
bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
|
| 1562 |
|
|
bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
|
| 1563 |
|
|
|
| 1564 |
|
|
bss->supp_rates_len = 0;
|
| 1565 |
|
|
if (elems.supp_rates) {
|
| 1566 |
|
|
clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
|
| 1567 |
|
|
if (clen > elems.supp_rates_len)
|
| 1568 |
|
|
clen = elems.supp_rates_len;
|
| 1569 |
|
|
memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates,
|
| 1570 |
|
|
clen);
|
| 1571 |
|
|
bss->supp_rates_len += clen;
|
| 1572 |
|
|
}
|
| 1573 |
|
|
if (elems.ext_supp_rates) {
|
| 1574 |
|
|
clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
|
| 1575 |
|
|
if (clen > elems.ext_supp_rates_len)
|
| 1576 |
|
|
clen = elems.ext_supp_rates_len;
|
| 1577 |
|
|
memcpy(&bss->supp_rates[bss->supp_rates_len],
|
| 1578 |
|
|
elems.ext_supp_rates, clen);
|
| 1579 |
|
|
bss->supp_rates_len += clen;
|
| 1580 |
|
|
}
|
| 1581 |
|
|
|
| 1582 |
|
|
if (elems.wpa &&
|
| 1583 |
|
|
(!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len ||
|
| 1584 |
|
|
memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
|
| 1585 |
|
|
kfree(bss->wpa_ie);
|
| 1586 |
|
|
bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC);
|
| 1587 |
|
|
if (bss->wpa_ie) {
|
| 1588 |
|
|
memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2);
|
| 1589 |
|
|
bss->wpa_ie_len = elems.wpa_len + 2;
|
| 1590 |
|
|
} else
|
| 1591 |
|
|
bss->wpa_ie_len = 0;
|
| 1592 |
|
|
} else if (!elems.wpa && bss->wpa_ie) {
|
| 1593 |
|
|
kfree(bss->wpa_ie);
|
| 1594 |
|
|
bss->wpa_ie = NULL;
|
| 1595 |
|
|
bss->wpa_ie_len = 0;
|
| 1596 |
|
|
}
|
| 1597 |
|
|
|
| 1598 |
|
|
if (elems.rsn &&
|
| 1599 |
|
|
(!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len ||
|
| 1600 |
|
|
memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) {
|
| 1601 |
|
|
kfree(bss->rsn_ie);
|
| 1602 |
|
|
bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC);
|
| 1603 |
|
|
if (bss->rsn_ie) {
|
| 1604 |
|
|
memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2);
|
| 1605 |
|
|
bss->rsn_ie_len = elems.rsn_len + 2;
|
| 1606 |
|
|
} else
|
| 1607 |
|
|
bss->rsn_ie_len = 0;
|
| 1608 |
|
|
} else if (!elems.rsn && bss->rsn_ie) {
|
| 1609 |
|
|
kfree(bss->rsn_ie);
|
| 1610 |
|
|
bss->rsn_ie = NULL;
|
| 1611 |
|
|
bss->rsn_ie_len = 0;
|
| 1612 |
|
|
}
|
| 1613 |
|
|
|
| 1614 |
|
|
if (elems.wmm_param &&
|
| 1615 |
|
|
(!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len ||
|
| 1616 |
|
|
memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
|
| 1617 |
|
|
kfree(bss->wmm_ie);
|
| 1618 |
|
|
bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC);
|
| 1619 |
|
|
if (bss->wmm_ie) {
|
| 1620 |
|
|
memcpy(bss->wmm_ie, elems.wmm_param - 2,
|
| 1621 |
|
|
elems.wmm_param_len + 2);
|
| 1622 |
|
|
bss->wmm_ie_len = elems.wmm_param_len + 2;
|
| 1623 |
|
|
} else
|
| 1624 |
|
|
bss->wmm_ie_len = 0;
|
| 1625 |
|
|
} else if (!elems.wmm_param && bss->wmm_ie) {
|
| 1626 |
|
|
kfree(bss->wmm_ie);
|
| 1627 |
|
|
bss->wmm_ie = NULL;
|
| 1628 |
|
|
bss->wmm_ie_len = 0;
|
| 1629 |
|
|
}
|
| 1630 |
|
|
|
| 1631 |
|
|
|
| 1632 |
|
|
bss->hw_mode = rx_status->phymode;
|
| 1633 |
|
|
bss->freq = rx_status->freq;
|
| 1634 |
|
|
if (channel != rx_status->channel &&
|
| 1635 |
|
|
(bss->hw_mode == MODE_IEEE80211G ||
|
| 1636 |
|
|
bss->hw_mode == MODE_IEEE80211B) &&
|
| 1637 |
|
|
channel >= 1 && channel <= 14) {
|
| 1638 |
|
|
static const int freq_list[] = {
|
| 1639 |
|
|
2412, 2417, 2422, 2427, 2432, 2437, 2442,
|
| 1640 |
|
|
2447, 2452, 2457, 2462, 2467, 2472, 2484
|
| 1641 |
|
|
};
|
| 1642 |
|
|
/* IEEE 802.11g/b mode can receive packets from neighboring
|
| 1643 |
|
|
* channels, so map the channel into frequency. */
|
| 1644 |
|
|
bss->freq = freq_list[channel - 1];
|
| 1645 |
|
|
}
|
| 1646 |
|
|
bss->timestamp = timestamp;
|
| 1647 |
|
|
bss->last_update = jiffies;
|
| 1648 |
|
|
bss->rssi = rx_status->ssi;
|
| 1649 |
|
|
bss->signal = rx_status->signal;
|
| 1650 |
|
|
bss->noise = rx_status->noise;
|
| 1651 |
|
|
if (!beacon)
|
| 1652 |
|
|
bss->probe_resp++;
|
| 1653 |
|
|
ieee80211_rx_bss_put(dev, bss);
|
| 1654 |
|
|
}
|
| 1655 |
|
|
|
| 1656 |
|
|
|
| 1657 |
|
|
static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev,
|
| 1658 |
|
|
struct ieee80211_mgmt *mgmt,
|
| 1659 |
|
|
size_t len,
|
| 1660 |
|
|
struct ieee80211_rx_status *rx_status)
|
| 1661 |
|
|
{
|
| 1662 |
|
|
ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0);
|
| 1663 |
|
|
}
|
| 1664 |
|
|
|
| 1665 |
|
|
|
| 1666 |
|
|
static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
|
| 1667 |
|
|
struct ieee80211_mgmt *mgmt,
|
| 1668 |
|
|
size_t len,
|
| 1669 |
|
|
struct ieee80211_rx_status *rx_status)
|
| 1670 |
|
|
{
|
| 1671 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 1672 |
|
|
struct ieee80211_if_sta *ifsta;
|
| 1673 |
|
|
size_t baselen;
|
| 1674 |
|
|
struct ieee802_11_elems elems;
|
| 1675 |
|
|
|
| 1676 |
|
|
ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
|
| 1677 |
|
|
|
| 1678 |
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 1679 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_STA)
|
| 1680 |
|
|
return;
|
| 1681 |
|
|
ifsta = &sdata->u.sta;
|
| 1682 |
|
|
|
| 1683 |
|
|
if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) ||
|
| 1684 |
|
|
memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0)
|
| 1685 |
|
|
return;
|
| 1686 |
|
|
|
| 1687 |
|
|
/* Process beacon from the current BSS */
|
| 1688 |
|
|
baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
|
| 1689 |
|
|
if (baselen > len)
|
| 1690 |
|
|
return;
|
| 1691 |
|
|
|
| 1692 |
|
|
ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
|
| 1693 |
|
|
|
| 1694 |
|
|
if (elems.erp_info && elems.erp_info_len >= 1)
|
| 1695 |
|
|
ieee80211_handle_erp_ie(dev, elems.erp_info[0]);
|
| 1696 |
|
|
|
| 1697 |
|
|
if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
|
| 1698 |
|
|
ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
|
| 1699 |
|
|
elems.wmm_param_len);
|
| 1700 |
|
|
}
|
| 1701 |
|
|
}
|
| 1702 |
|
|
|
| 1703 |
|
|
|
| 1704 |
|
|
static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
|
| 1705 |
|
|
struct ieee80211_if_sta *ifsta,
|
| 1706 |
|
|
struct ieee80211_mgmt *mgmt,
|
| 1707 |
|
|
size_t len,
|
| 1708 |
|
|
struct ieee80211_rx_status *rx_status)
|
| 1709 |
|
|
{
|
| 1710 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1711 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 1712 |
|
|
int tx_last_beacon;
|
| 1713 |
|
|
struct sk_buff *skb;
|
| 1714 |
|
|
struct ieee80211_mgmt *resp;
|
| 1715 |
|
|
u8 *pos, *end;
|
| 1716 |
|
|
DECLARE_MAC_BUF(mac);
|
| 1717 |
|
|
#ifdef CONFIG_MAC80211_IBSS_DEBUG
|
| 1718 |
|
|
DECLARE_MAC_BUF(mac2);
|
| 1719 |
|
|
DECLARE_MAC_BUF(mac3);
|
| 1720 |
|
|
#endif
|
| 1721 |
|
|
|
| 1722 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_IBSS ||
|
| 1723 |
|
|
ifsta->state != IEEE80211_IBSS_JOINED ||
|
| 1724 |
|
|
len < 24 + 2 || !ifsta->probe_resp)
|
| 1725 |
|
|
return;
|
| 1726 |
|
|
|
| 1727 |
|
|
if (local->ops->tx_last_beacon)
|
| 1728 |
|
|
tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local));
|
| 1729 |
|
|
else
|
| 1730 |
|
|
tx_last_beacon = 1;
|
| 1731 |
|
|
|
| 1732 |
|
|
#ifdef CONFIG_MAC80211_IBSS_DEBUG
|
| 1733 |
|
|
printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID="
|
| 1734 |
|
|
"%s (tx_last_beacon=%d)\n",
|
| 1735 |
|
|
dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da),
|
| 1736 |
|
|
print_mac(mac3, mgmt->bssid), tx_last_beacon);
|
| 1737 |
|
|
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
|
| 1738 |
|
|
|
| 1739 |
|
|
if (!tx_last_beacon)
|
| 1740 |
|
|
return;
|
| 1741 |
|
|
|
| 1742 |
|
|
if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 &&
|
| 1743 |
|
|
memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
|
| 1744 |
|
|
return;
|
| 1745 |
|
|
|
| 1746 |
|
|
end = ((u8 *) mgmt) + len;
|
| 1747 |
|
|
pos = mgmt->u.probe_req.variable;
|
| 1748 |
|
|
if (pos[0] != WLAN_EID_SSID ||
|
| 1749 |
|
|
pos + 2 + pos[1] > end) {
|
| 1750 |
|
|
if (net_ratelimit()) {
|
| 1751 |
|
|
printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq "
|
| 1752 |
|
|
"from %s\n",
|
| 1753 |
|
|
dev->name, print_mac(mac, mgmt->sa));
|
| 1754 |
|
|
}
|
| 1755 |
|
|
return;
|
| 1756 |
|
|
}
|
| 1757 |
|
|
if (pos[1] != 0 &&
|
| 1758 |
|
|
(pos[1] != ifsta->ssid_len ||
|
| 1759 |
|
|
memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) {
|
| 1760 |
|
|
/* Ignore ProbeReq for foreign SSID */
|
| 1761 |
|
|
return;
|
| 1762 |
|
|
}
|
| 1763 |
|
|
|
| 1764 |
|
|
/* Reply with ProbeResp */
|
| 1765 |
|
|
skb = skb_copy(ifsta->probe_resp, GFP_KERNEL);
|
| 1766 |
|
|
if (!skb)
|
| 1767 |
|
|
return;
|
| 1768 |
|
|
|
| 1769 |
|
|
resp = (struct ieee80211_mgmt *) skb->data;
|
| 1770 |
|
|
memcpy(resp->da, mgmt->sa, ETH_ALEN);
|
| 1771 |
|
|
#ifdef CONFIG_MAC80211_IBSS_DEBUG
|
| 1772 |
|
|
printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n",
|
| 1773 |
|
|
dev->name, print_mac(mac, resp->da));
|
| 1774 |
|
|
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
|
| 1775 |
|
|
ieee80211_sta_tx(dev, skb, 0);
|
| 1776 |
|
|
}
|
| 1777 |
|
|
|
| 1778 |
|
|
|
| 1779 |
|
|
void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
|
| 1780 |
|
|
struct ieee80211_rx_status *rx_status)
|
| 1781 |
|
|
{
|
| 1782 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1783 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 1784 |
|
|
struct ieee80211_if_sta *ifsta;
|
| 1785 |
|
|
struct ieee80211_mgmt *mgmt;
|
| 1786 |
|
|
u16 fc;
|
| 1787 |
|
|
|
| 1788 |
|
|
if (skb->len < 24)
|
| 1789 |
|
|
goto fail;
|
| 1790 |
|
|
|
| 1791 |
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 1792 |
|
|
ifsta = &sdata->u.sta;
|
| 1793 |
|
|
|
| 1794 |
|
|
mgmt = (struct ieee80211_mgmt *) skb->data;
|
| 1795 |
|
|
fc = le16_to_cpu(mgmt->frame_control);
|
| 1796 |
|
|
|
| 1797 |
|
|
switch (fc & IEEE80211_FCTL_STYPE) {
|
| 1798 |
|
|
case IEEE80211_STYPE_PROBE_REQ:
|
| 1799 |
|
|
case IEEE80211_STYPE_PROBE_RESP:
|
| 1800 |
|
|
case IEEE80211_STYPE_BEACON:
|
| 1801 |
|
|
memcpy(skb->cb, rx_status, sizeof(*rx_status));
|
| 1802 |
|
|
case IEEE80211_STYPE_AUTH:
|
| 1803 |
|
|
case IEEE80211_STYPE_ASSOC_RESP:
|
| 1804 |
|
|
case IEEE80211_STYPE_REASSOC_RESP:
|
| 1805 |
|
|
case IEEE80211_STYPE_DEAUTH:
|
| 1806 |
|
|
case IEEE80211_STYPE_DISASSOC:
|
| 1807 |
|
|
skb_queue_tail(&ifsta->skb_queue, skb);
|
| 1808 |
|
|
queue_work(local->hw.workqueue, &ifsta->work);
|
| 1809 |
|
|
return;
|
| 1810 |
|
|
default:
|
| 1811 |
|
|
printk(KERN_DEBUG "%s: received unknown management frame - "
|
| 1812 |
|
|
"stype=%d\n", dev->name,
|
| 1813 |
|
|
(fc & IEEE80211_FCTL_STYPE) >> 4);
|
| 1814 |
|
|
break;
|
| 1815 |
|
|
}
|
| 1816 |
|
|
|
| 1817 |
|
|
fail:
|
| 1818 |
|
|
kfree_skb(skb);
|
| 1819 |
|
|
}
|
| 1820 |
|
|
|
| 1821 |
|
|
|
| 1822 |
|
|
static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
|
| 1823 |
|
|
struct sk_buff *skb)
|
| 1824 |
|
|
{
|
| 1825 |
|
|
struct ieee80211_rx_status *rx_status;
|
| 1826 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 1827 |
|
|
struct ieee80211_if_sta *ifsta;
|
| 1828 |
|
|
struct ieee80211_mgmt *mgmt;
|
| 1829 |
|
|
u16 fc;
|
| 1830 |
|
|
|
| 1831 |
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 1832 |
|
|
ifsta = &sdata->u.sta;
|
| 1833 |
|
|
|
| 1834 |
|
|
rx_status = (struct ieee80211_rx_status *) skb->cb;
|
| 1835 |
|
|
mgmt = (struct ieee80211_mgmt *) skb->data;
|
| 1836 |
|
|
fc = le16_to_cpu(mgmt->frame_control);
|
| 1837 |
|
|
|
| 1838 |
|
|
switch (fc & IEEE80211_FCTL_STYPE) {
|
| 1839 |
|
|
case IEEE80211_STYPE_PROBE_REQ:
|
| 1840 |
|
|
ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len,
|
| 1841 |
|
|
rx_status);
|
| 1842 |
|
|
break;
|
| 1843 |
|
|
case IEEE80211_STYPE_PROBE_RESP:
|
| 1844 |
|
|
ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status);
|
| 1845 |
|
|
break;
|
| 1846 |
|
|
case IEEE80211_STYPE_BEACON:
|
| 1847 |
|
|
ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status);
|
| 1848 |
|
|
break;
|
| 1849 |
|
|
case IEEE80211_STYPE_AUTH:
|
| 1850 |
|
|
ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len);
|
| 1851 |
|
|
break;
|
| 1852 |
|
|
case IEEE80211_STYPE_ASSOC_RESP:
|
| 1853 |
|
|
ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 0);
|
| 1854 |
|
|
break;
|
| 1855 |
|
|
case IEEE80211_STYPE_REASSOC_RESP:
|
| 1856 |
|
|
ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 1);
|
| 1857 |
|
|
break;
|
| 1858 |
|
|
case IEEE80211_STYPE_DEAUTH:
|
| 1859 |
|
|
ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len);
|
| 1860 |
|
|
break;
|
| 1861 |
|
|
case IEEE80211_STYPE_DISASSOC:
|
| 1862 |
|
|
ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len);
|
| 1863 |
|
|
break;
|
| 1864 |
|
|
}
|
| 1865 |
|
|
|
| 1866 |
|
|
kfree_skb(skb);
|
| 1867 |
|
|
}
|
| 1868 |
|
|
|
| 1869 |
|
|
|
| 1870 |
|
|
void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
|
| 1871 |
|
|
struct ieee80211_rx_status *rx_status)
|
| 1872 |
|
|
{
|
| 1873 |
|
|
struct ieee80211_mgmt *mgmt;
|
| 1874 |
|
|
u16 fc;
|
| 1875 |
|
|
|
| 1876 |
|
|
if (skb->len < 24) {
|
| 1877 |
|
|
dev_kfree_skb(skb);
|
| 1878 |
|
|
return;
|
| 1879 |
|
|
}
|
| 1880 |
|
|
|
| 1881 |
|
|
mgmt = (struct ieee80211_mgmt *) skb->data;
|
| 1882 |
|
|
fc = le16_to_cpu(mgmt->frame_control);
|
| 1883 |
|
|
|
| 1884 |
|
|
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
|
| 1885 |
|
|
if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) {
|
| 1886 |
|
|
ieee80211_rx_mgmt_probe_resp(dev, mgmt,
|
| 1887 |
|
|
skb->len, rx_status);
|
| 1888 |
|
|
} else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) {
|
| 1889 |
|
|
ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len,
|
| 1890 |
|
|
rx_status);
|
| 1891 |
|
|
}
|
| 1892 |
|
|
}
|
| 1893 |
|
|
|
| 1894 |
|
|
dev_kfree_skb(skb);
|
| 1895 |
|
|
}
|
| 1896 |
|
|
|
| 1897 |
|
|
|
| 1898 |
|
|
static int ieee80211_sta_active_ibss(struct net_device *dev)
|
| 1899 |
|
|
{
|
| 1900 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1901 |
|
|
int active = 0;
|
| 1902 |
|
|
struct sta_info *sta;
|
| 1903 |
|
|
|
| 1904 |
|
|
read_lock_bh(&local->sta_lock);
|
| 1905 |
|
|
list_for_each_entry(sta, &local->sta_list, list) {
|
| 1906 |
|
|
if (sta->dev == dev &&
|
| 1907 |
|
|
time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
|
| 1908 |
|
|
jiffies)) {
|
| 1909 |
|
|
active++;
|
| 1910 |
|
|
break;
|
| 1911 |
|
|
}
|
| 1912 |
|
|
}
|
| 1913 |
|
|
read_unlock_bh(&local->sta_lock);
|
| 1914 |
|
|
|
| 1915 |
|
|
return active;
|
| 1916 |
|
|
}
|
| 1917 |
|
|
|
| 1918 |
|
|
|
| 1919 |
|
|
static void ieee80211_sta_expire(struct net_device *dev)
|
| 1920 |
|
|
{
|
| 1921 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1922 |
|
|
struct sta_info *sta, *tmp;
|
| 1923 |
|
|
LIST_HEAD(tmp_list);
|
| 1924 |
|
|
DECLARE_MAC_BUF(mac);
|
| 1925 |
|
|
|
| 1926 |
|
|
write_lock_bh(&local->sta_lock);
|
| 1927 |
|
|
list_for_each_entry_safe(sta, tmp, &local->sta_list, list)
|
| 1928 |
|
|
if (time_after(jiffies, sta->last_rx +
|
| 1929 |
|
|
IEEE80211_IBSS_INACTIVITY_LIMIT)) {
|
| 1930 |
|
|
printk(KERN_DEBUG "%s: expiring inactive STA %s\n",
|
| 1931 |
|
|
dev->name, print_mac(mac, sta->addr));
|
| 1932 |
|
|
__sta_info_get(sta);
|
| 1933 |
|
|
sta_info_remove(sta);
|
| 1934 |
|
|
list_add(&sta->list, &tmp_list);
|
| 1935 |
|
|
}
|
| 1936 |
|
|
write_unlock_bh(&local->sta_lock);
|
| 1937 |
|
|
|
| 1938 |
|
|
list_for_each_entry_safe(sta, tmp, &tmp_list, list) {
|
| 1939 |
|
|
sta_info_free(sta);
|
| 1940 |
|
|
sta_info_put(sta);
|
| 1941 |
|
|
}
|
| 1942 |
|
|
}
|
| 1943 |
|
|
|
| 1944 |
|
|
|
| 1945 |
|
|
static void ieee80211_sta_merge_ibss(struct net_device *dev,
|
| 1946 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 1947 |
|
|
{
|
| 1948 |
|
|
mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
|
| 1949 |
|
|
|
| 1950 |
|
|
ieee80211_sta_expire(dev);
|
| 1951 |
|
|
if (ieee80211_sta_active_ibss(dev))
|
| 1952 |
|
|
return;
|
| 1953 |
|
|
|
| 1954 |
|
|
printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
|
| 1955 |
|
|
"IBSS networks with same SSID (merge)\n", dev->name);
|
| 1956 |
|
|
ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len);
|
| 1957 |
|
|
}
|
| 1958 |
|
|
|
| 1959 |
|
|
|
| 1960 |
|
|
void ieee80211_sta_timer(unsigned long data)
|
| 1961 |
|
|
{
|
| 1962 |
|
|
struct ieee80211_sub_if_data *sdata =
|
| 1963 |
|
|
(struct ieee80211_sub_if_data *) data;
|
| 1964 |
|
|
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
|
| 1965 |
|
|
struct ieee80211_local *local = wdev_priv(&sdata->wdev);
|
| 1966 |
|
|
|
| 1967 |
|
|
set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
|
| 1968 |
|
|
queue_work(local->hw.workqueue, &ifsta->work);
|
| 1969 |
|
|
}
|
| 1970 |
|
|
|
| 1971 |
|
|
|
| 1972 |
|
|
void ieee80211_sta_work(struct work_struct *work)
|
| 1973 |
|
|
{
|
| 1974 |
|
|
struct ieee80211_sub_if_data *sdata =
|
| 1975 |
|
|
container_of(work, struct ieee80211_sub_if_data, u.sta.work);
|
| 1976 |
|
|
struct net_device *dev = sdata->dev;
|
| 1977 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1978 |
|
|
struct ieee80211_if_sta *ifsta;
|
| 1979 |
|
|
struct sk_buff *skb;
|
| 1980 |
|
|
|
| 1981 |
|
|
if (!netif_running(dev))
|
| 1982 |
|
|
return;
|
| 1983 |
|
|
|
| 1984 |
|
|
if (local->sta_scanning)
|
| 1985 |
|
|
return;
|
| 1986 |
|
|
|
| 1987 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_STA &&
|
| 1988 |
|
|
sdata->type != IEEE80211_IF_TYPE_IBSS) {
|
| 1989 |
|
|
printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface "
|
| 1990 |
|
|
"(type=%d)\n", dev->name, sdata->type);
|
| 1991 |
|
|
return;
|
| 1992 |
|
|
}
|
| 1993 |
|
|
ifsta = &sdata->u.sta;
|
| 1994 |
|
|
|
| 1995 |
|
|
while ((skb = skb_dequeue(&ifsta->skb_queue)))
|
| 1996 |
|
|
ieee80211_sta_rx_queued_mgmt(dev, skb);
|
| 1997 |
|
|
|
| 1998 |
|
|
if (ifsta->state != IEEE80211_AUTHENTICATE &&
|
| 1999 |
|
|
ifsta->state != IEEE80211_ASSOCIATE &&
|
| 2000 |
|
|
test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) {
|
| 2001 |
|
|
if (ifsta->scan_ssid_len)
|
| 2002 |
|
|
ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len);
|
| 2003 |
|
|
else
|
| 2004 |
|
|
ieee80211_sta_start_scan(dev, NULL, 0);
|
| 2005 |
|
|
return;
|
| 2006 |
|
|
}
|
| 2007 |
|
|
|
| 2008 |
|
|
if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) {
|
| 2009 |
|
|
if (ieee80211_sta_config_auth(dev, ifsta))
|
| 2010 |
|
|
return;
|
| 2011 |
|
|
clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request);
|
| 2012 |
|
|
} else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request))
|
| 2013 |
|
|
return;
|
| 2014 |
|
|
|
| 2015 |
|
|
switch (ifsta->state) {
|
| 2016 |
|
|
case IEEE80211_DISABLED:
|
| 2017 |
|
|
break;
|
| 2018 |
|
|
case IEEE80211_AUTHENTICATE:
|
| 2019 |
|
|
ieee80211_authenticate(dev, ifsta);
|
| 2020 |
|
|
break;
|
| 2021 |
|
|
case IEEE80211_ASSOCIATE:
|
| 2022 |
|
|
ieee80211_associate(dev, ifsta);
|
| 2023 |
|
|
break;
|
| 2024 |
|
|
case IEEE80211_ASSOCIATED:
|
| 2025 |
|
|
ieee80211_associated(dev, ifsta);
|
| 2026 |
|
|
break;
|
| 2027 |
|
|
case IEEE80211_IBSS_SEARCH:
|
| 2028 |
|
|
ieee80211_sta_find_ibss(dev, ifsta);
|
| 2029 |
|
|
break;
|
| 2030 |
|
|
case IEEE80211_IBSS_JOINED:
|
| 2031 |
|
|
ieee80211_sta_merge_ibss(dev, ifsta);
|
| 2032 |
|
|
break;
|
| 2033 |
|
|
default:
|
| 2034 |
|
|
printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n",
|
| 2035 |
|
|
ifsta->state);
|
| 2036 |
|
|
break;
|
| 2037 |
|
|
}
|
| 2038 |
|
|
|
| 2039 |
|
|
if (ieee80211_privacy_mismatch(dev, ifsta)) {
|
| 2040 |
|
|
printk(KERN_DEBUG "%s: privacy configuration mismatch and "
|
| 2041 |
|
|
"mixed-cell disabled - disassociate\n", dev->name);
|
| 2042 |
|
|
|
| 2043 |
|
|
ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED);
|
| 2044 |
|
|
ieee80211_set_disassoc(dev, ifsta, 0);
|
| 2045 |
|
|
}
|
| 2046 |
|
|
}
|
| 2047 |
|
|
|
| 2048 |
|
|
|
| 2049 |
|
|
static void ieee80211_sta_reset_auth(struct net_device *dev,
|
| 2050 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 2051 |
|
|
{
|
| 2052 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2053 |
|
|
|
| 2054 |
|
|
if (local->ops->reset_tsf) {
|
| 2055 |
|
|
/* Reset own TSF to allow time synchronization work. */
|
| 2056 |
|
|
local->ops->reset_tsf(local_to_hw(local));
|
| 2057 |
|
|
}
|
| 2058 |
|
|
|
| 2059 |
|
|
ifsta->wmm_last_param_set = -1; /* allow any WMM update */
|
| 2060 |
|
|
|
| 2061 |
|
|
|
| 2062 |
|
|
if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN)
|
| 2063 |
|
|
ifsta->auth_alg = WLAN_AUTH_OPEN;
|
| 2064 |
|
|
else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
|
| 2065 |
|
|
ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
|
| 2066 |
|
|
else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP)
|
| 2067 |
|
|
ifsta->auth_alg = WLAN_AUTH_LEAP;
|
| 2068 |
|
|
else
|
| 2069 |
|
|
ifsta->auth_alg = WLAN_AUTH_OPEN;
|
| 2070 |
|
|
printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name,
|
| 2071 |
|
|
ifsta->auth_alg);
|
| 2072 |
|
|
ifsta->auth_transaction = -1;
|
| 2073 |
|
|
ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
|
| 2074 |
|
|
ifsta->auth_tries = ifsta->assoc_tries = 0;
|
| 2075 |
|
|
netif_carrier_off(dev);
|
| 2076 |
|
|
}
|
| 2077 |
|
|
|
| 2078 |
|
|
|
| 2079 |
|
|
void ieee80211_sta_req_auth(struct net_device *dev,
|
| 2080 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 2081 |
|
|
{
|
| 2082 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2083 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2084 |
|
|
|
| 2085 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_STA)
|
| 2086 |
|
|
return;
|
| 2087 |
|
|
|
| 2088 |
|
|
if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
|
| 2089 |
|
|
IEEE80211_STA_AUTO_BSSID_SEL)) &&
|
| 2090 |
|
|
(ifsta->flags & (IEEE80211_STA_SSID_SET |
|
| 2091 |
|
|
IEEE80211_STA_AUTO_SSID_SEL))) {
|
| 2092 |
|
|
set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
|
| 2093 |
|
|
queue_work(local->hw.workqueue, &ifsta->work);
|
| 2094 |
|
|
}
|
| 2095 |
|
|
}
|
| 2096 |
|
|
|
| 2097 |
|
|
static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
|
| 2098 |
|
|
const char *ssid, int ssid_len)
|
| 2099 |
|
|
{
|
| 2100 |
|
|
int tmp, hidden_ssid;
|
| 2101 |
|
|
|
| 2102 |
|
|
if (ssid_len == ifsta->ssid_len &&
|
| 2103 |
|
|
!memcmp(ifsta->ssid, ssid, ssid_len))
|
| 2104 |
|
|
return 1;
|
| 2105 |
|
|
|
| 2106 |
|
|
if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL)
|
| 2107 |
|
|
return 0;
|
| 2108 |
|
|
|
| 2109 |
|
|
hidden_ssid = 1;
|
| 2110 |
|
|
tmp = ssid_len;
|
| 2111 |
|
|
while (tmp--) {
|
| 2112 |
|
|
if (ssid[tmp] != '\0') {
|
| 2113 |
|
|
hidden_ssid = 0;
|
| 2114 |
|
|
break;
|
| 2115 |
|
|
}
|
| 2116 |
|
|
}
|
| 2117 |
|
|
|
| 2118 |
|
|
if (hidden_ssid && ifsta->ssid_len == ssid_len)
|
| 2119 |
|
|
return 1;
|
| 2120 |
|
|
|
| 2121 |
|
|
if (ssid_len == 1 && ssid[0] == ' ')
|
| 2122 |
|
|
return 1;
|
| 2123 |
|
|
|
| 2124 |
|
|
return 0;
|
| 2125 |
|
|
}
|
| 2126 |
|
|
|
| 2127 |
|
|
static int ieee80211_sta_config_auth(struct net_device *dev,
|
| 2128 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 2129 |
|
|
{
|
| 2130 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2131 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2132 |
|
|
struct ieee80211_sta_bss *bss, *selected = NULL;
|
| 2133 |
|
|
int top_rssi = 0, freq;
|
| 2134 |
|
|
|
| 2135 |
|
|
if (!(ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL |
|
| 2136 |
|
|
IEEE80211_STA_AUTO_BSSID_SEL | IEEE80211_STA_AUTO_CHANNEL_SEL))) {
|
| 2137 |
|
|
ifsta->state = IEEE80211_AUTHENTICATE;
|
| 2138 |
|
|
ieee80211_sta_reset_auth(dev, ifsta);
|
| 2139 |
|
|
return 0;
|
| 2140 |
|
|
}
|
| 2141 |
|
|
|
| 2142 |
|
|
spin_lock_bh(&local->sta_bss_lock);
|
| 2143 |
|
|
freq = local->oper_channel->freq;
|
| 2144 |
|
|
list_for_each_entry(bss, &local->sta_bss_list, list) {
|
| 2145 |
|
|
if (!(bss->capability & WLAN_CAPABILITY_ESS))
|
| 2146 |
|
|
continue;
|
| 2147 |
|
|
|
| 2148 |
|
|
if (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^
|
| 2149 |
|
|
!!sdata->default_key)
|
| 2150 |
|
|
continue;
|
| 2151 |
|
|
|
| 2152 |
|
|
if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) &&
|
| 2153 |
|
|
bss->freq != freq)
|
| 2154 |
|
|
continue;
|
| 2155 |
|
|
|
| 2156 |
|
|
if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) &&
|
| 2157 |
|
|
memcmp(bss->bssid, ifsta->bssid, ETH_ALEN))
|
| 2158 |
|
|
continue;
|
| 2159 |
|
|
|
| 2160 |
|
|
if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) &&
|
| 2161 |
|
|
!ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len))
|
| 2162 |
|
|
continue;
|
| 2163 |
|
|
|
| 2164 |
|
|
if (!selected || top_rssi < bss->rssi) {
|
| 2165 |
|
|
selected = bss;
|
| 2166 |
|
|
top_rssi = bss->rssi;
|
| 2167 |
|
|
}
|
| 2168 |
|
|
}
|
| 2169 |
|
|
if (selected)
|
| 2170 |
|
|
atomic_inc(&selected->users);
|
| 2171 |
|
|
spin_unlock_bh(&local->sta_bss_lock);
|
| 2172 |
|
|
|
| 2173 |
|
|
if (selected) {
|
| 2174 |
|
|
ieee80211_set_channel(local, -1, selected->freq);
|
| 2175 |
|
|
if (!(ifsta->flags & IEEE80211_STA_SSID_SET))
|
| 2176 |
|
|
ieee80211_sta_set_ssid(dev, selected->ssid,
|
| 2177 |
|
|
selected->ssid_len);
|
| 2178 |
|
|
ieee80211_sta_set_bssid(dev, selected->bssid);
|
| 2179 |
|
|
ieee80211_rx_bss_put(dev, selected);
|
| 2180 |
|
|
ifsta->state = IEEE80211_AUTHENTICATE;
|
| 2181 |
|
|
ieee80211_sta_reset_auth(dev, ifsta);
|
| 2182 |
|
|
return 0;
|
| 2183 |
|
|
} else {
|
| 2184 |
|
|
if (ifsta->state != IEEE80211_AUTHENTICATE) {
|
| 2185 |
|
|
if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL)
|
| 2186 |
|
|
ieee80211_sta_start_scan(dev, NULL, 0);
|
| 2187 |
|
|
else
|
| 2188 |
|
|
ieee80211_sta_start_scan(dev, ifsta->ssid,
|
| 2189 |
|
|
ifsta->ssid_len);
|
| 2190 |
|
|
ifsta->state = IEEE80211_AUTHENTICATE;
|
| 2191 |
|
|
set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
|
| 2192 |
|
|
} else
|
| 2193 |
|
|
ifsta->state = IEEE80211_DISABLED;
|
| 2194 |
|
|
}
|
| 2195 |
|
|
return -1;
|
| 2196 |
|
|
}
|
| 2197 |
|
|
|
| 2198 |
|
|
static int ieee80211_sta_join_ibss(struct net_device *dev,
|
| 2199 |
|
|
struct ieee80211_if_sta *ifsta,
|
| 2200 |
|
|
struct ieee80211_sta_bss *bss)
|
| 2201 |
|
|
{
|
| 2202 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2203 |
|
|
int res, rates, i, j;
|
| 2204 |
|
|
struct sk_buff *skb;
|
| 2205 |
|
|
struct ieee80211_mgmt *mgmt;
|
| 2206 |
|
|
struct ieee80211_tx_control control;
|
| 2207 |
|
|
struct ieee80211_rate *rate;
|
| 2208 |
|
|
struct ieee80211_hw_mode *mode;
|
| 2209 |
|
|
struct rate_control_extra extra;
|
| 2210 |
|
|
u8 *pos;
|
| 2211 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 2212 |
|
|
|
| 2213 |
|
|
/* Remove possible STA entries from other IBSS networks. */
|
| 2214 |
|
|
sta_info_flush(local, NULL);
|
| 2215 |
|
|
|
| 2216 |
|
|
if (local->ops->reset_tsf) {
|
| 2217 |
|
|
/* Reset own TSF to allow time synchronization work. */
|
| 2218 |
|
|
local->ops->reset_tsf(local_to_hw(local));
|
| 2219 |
|
|
}
|
| 2220 |
|
|
memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
|
| 2221 |
|
|
res = ieee80211_if_config(dev);
|
| 2222 |
|
|
if (res)
|
| 2223 |
|
|
return res;
|
| 2224 |
|
|
|
| 2225 |
|
|
local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
|
| 2226 |
|
|
|
| 2227 |
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2228 |
|
|
sdata->drop_unencrypted = bss->capability &
|
| 2229 |
|
|
WLAN_CAPABILITY_PRIVACY ? 1 : 0;
|
| 2230 |
|
|
|
| 2231 |
|
|
res = ieee80211_set_channel(local, -1, bss->freq);
|
| 2232 |
|
|
|
| 2233 |
|
|
if (!(local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)) {
|
| 2234 |
|
|
printk(KERN_DEBUG "%s: IBSS not allowed on channel %d "
|
| 2235 |
|
|
"(%d MHz)\n", dev->name, local->hw.conf.channel,
|
| 2236 |
|
|
local->hw.conf.freq);
|
| 2237 |
|
|
return -1;
|
| 2238 |
|
|
}
|
| 2239 |
|
|
|
| 2240 |
|
|
/* Set beacon template based on scan results */
|
| 2241 |
|
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
|
| 2242 |
|
|
do {
|
| 2243 |
|
|
if (!skb)
|
| 2244 |
|
|
break;
|
| 2245 |
|
|
|
| 2246 |
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
| 2247 |
|
|
|
| 2248 |
|
|
mgmt = (struct ieee80211_mgmt *)
|
| 2249 |
|
|
skb_put(skb, 24 + sizeof(mgmt->u.beacon));
|
| 2250 |
|
|
memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
|
| 2251 |
|
|
mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
|
| 2252 |
|
|
IEEE80211_STYPE_BEACON);
|
| 2253 |
|
|
memset(mgmt->da, 0xff, ETH_ALEN);
|
| 2254 |
|
|
memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
|
| 2255 |
|
|
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
|
| 2256 |
|
|
mgmt->u.beacon.beacon_int =
|
| 2257 |
|
|
cpu_to_le16(local->hw.conf.beacon_int);
|
| 2258 |
|
|
mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability);
|
| 2259 |
|
|
|
| 2260 |
|
|
pos = skb_put(skb, 2 + ifsta->ssid_len);
|
| 2261 |
|
|
*pos++ = WLAN_EID_SSID;
|
| 2262 |
|
|
*pos++ = ifsta->ssid_len;
|
| 2263 |
|
|
memcpy(pos, ifsta->ssid, ifsta->ssid_len);
|
| 2264 |
|
|
|
| 2265 |
|
|
rates = bss->supp_rates_len;
|
| 2266 |
|
|
if (rates > 8)
|
| 2267 |
|
|
rates = 8;
|
| 2268 |
|
|
pos = skb_put(skb, 2 + rates);
|
| 2269 |
|
|
*pos++ = WLAN_EID_SUPP_RATES;
|
| 2270 |
|
|
*pos++ = rates;
|
| 2271 |
|
|
memcpy(pos, bss->supp_rates, rates);
|
| 2272 |
|
|
|
| 2273 |
|
|
pos = skb_put(skb, 2 + 1);
|
| 2274 |
|
|
*pos++ = WLAN_EID_DS_PARAMS;
|
| 2275 |
|
|
*pos++ = 1;
|
| 2276 |
|
|
*pos++ = bss->channel;
|
| 2277 |
|
|
|
| 2278 |
|
|
pos = skb_put(skb, 2 + 2);
|
| 2279 |
|
|
*pos++ = WLAN_EID_IBSS_PARAMS;
|
| 2280 |
|
|
*pos++ = 2;
|
| 2281 |
|
|
/* FIX: set ATIM window based on scan results */
|
| 2282 |
|
|
*pos++ = 0;
|
| 2283 |
|
|
*pos++ = 0;
|
| 2284 |
|
|
|
| 2285 |
|
|
if (bss->supp_rates_len > 8) {
|
| 2286 |
|
|
rates = bss->supp_rates_len - 8;
|
| 2287 |
|
|
pos = skb_put(skb, 2 + rates);
|
| 2288 |
|
|
*pos++ = WLAN_EID_EXT_SUPP_RATES;
|
| 2289 |
|
|
*pos++ = rates;
|
| 2290 |
|
|
memcpy(pos, &bss->supp_rates[8], rates);
|
| 2291 |
|
|
}
|
| 2292 |
|
|
|
| 2293 |
|
|
memset(&control, 0, sizeof(control));
|
| 2294 |
|
|
memset(&extra, 0, sizeof(extra));
|
| 2295 |
|
|
extra.mode = local->oper_hw_mode;
|
| 2296 |
|
|
rate = rate_control_get_rate(local, dev, skb, &extra);
|
| 2297 |
|
|
if (!rate) {
|
| 2298 |
|
|
printk(KERN_DEBUG "%s: Failed to determine TX rate "
|
| 2299 |
|
|
"for IBSS beacon\n", dev->name);
|
| 2300 |
|
|
break;
|
| 2301 |
|
|
}
|
| 2302 |
|
|
control.tx_rate =
|
| 2303 |
|
|
((sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE) &&
|
| 2304 |
|
|
(rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
|
| 2305 |
|
|
rate->val2 : rate->val;
|
| 2306 |
|
|
control.antenna_sel_tx = local->hw.conf.antenna_sel_tx;
|
| 2307 |
|
|
control.power_level = local->hw.conf.power_level;
|
| 2308 |
|
|
control.flags |= IEEE80211_TXCTL_NO_ACK;
|
| 2309 |
|
|
control.retry_limit = 1;
|
| 2310 |
|
|
|
| 2311 |
|
|
ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC);
|
| 2312 |
|
|
if (ifsta->probe_resp) {
|
| 2313 |
|
|
mgmt = (struct ieee80211_mgmt *)
|
| 2314 |
|
|
ifsta->probe_resp->data;
|
| 2315 |
|
|
mgmt->frame_control =
|
| 2316 |
|
|
IEEE80211_FC(IEEE80211_FTYPE_MGMT,
|
| 2317 |
|
|
IEEE80211_STYPE_PROBE_RESP);
|
| 2318 |
|
|
} else {
|
| 2319 |
|
|
printk(KERN_DEBUG "%s: Could not allocate ProbeResp "
|
| 2320 |
|
|
"template for IBSS\n", dev->name);
|
| 2321 |
|
|
}
|
| 2322 |
|
|
|
| 2323 |
|
|
if (local->ops->beacon_update &&
|
| 2324 |
|
|
local->ops->beacon_update(local_to_hw(local),
|
| 2325 |
|
|
skb, &control) == 0) {
|
| 2326 |
|
|
printk(KERN_DEBUG "%s: Configured IBSS beacon "
|
| 2327 |
|
|
"template based on scan results\n", dev->name);
|
| 2328 |
|
|
skb = NULL;
|
| 2329 |
|
|
}
|
| 2330 |
|
|
|
| 2331 |
|
|
rates = 0;
|
| 2332 |
|
|
mode = local->oper_hw_mode;
|
| 2333 |
|
|
for (i = 0; i < bss->supp_rates_len; i++) {
|
| 2334 |
|
|
int bitrate = (bss->supp_rates[i] & 0x7f) * 5;
|
| 2335 |
|
|
for (j = 0; j < mode->num_rates; j++)
|
| 2336 |
|
|
if (mode->rates[j].rate == bitrate)
|
| 2337 |
|
|
rates |= BIT(j);
|
| 2338 |
|
|
}
|
| 2339 |
|
|
ifsta->supp_rates_bits = rates;
|
| 2340 |
|
|
} while (0);
|
| 2341 |
|
|
|
| 2342 |
|
|
if (skb) {
|
| 2343 |
|
|
printk(KERN_DEBUG "%s: Failed to configure IBSS beacon "
|
| 2344 |
|
|
"template\n", dev->name);
|
| 2345 |
|
|
dev_kfree_skb(skb);
|
| 2346 |
|
|
}
|
| 2347 |
|
|
|
| 2348 |
|
|
ifsta->state = IEEE80211_IBSS_JOINED;
|
| 2349 |
|
|
mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
|
| 2350 |
|
|
|
| 2351 |
|
|
ieee80211_rx_bss_put(dev, bss);
|
| 2352 |
|
|
|
| 2353 |
|
|
return res;
|
| 2354 |
|
|
}
|
| 2355 |
|
|
|
| 2356 |
|
|
|
| 2357 |
|
|
static int ieee80211_sta_create_ibss(struct net_device *dev,
|
| 2358 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 2359 |
|
|
{
|
| 2360 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2361 |
|
|
struct ieee80211_sta_bss *bss;
|
| 2362 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2363 |
|
|
struct ieee80211_hw_mode *mode;
|
| 2364 |
|
|
u8 bssid[ETH_ALEN], *pos;
|
| 2365 |
|
|
int i;
|
| 2366 |
|
|
DECLARE_MAC_BUF(mac);
|
| 2367 |
|
|
|
| 2368 |
|
|
#if 0
|
| 2369 |
|
|
/* Easier testing, use fixed BSSID. */
|
| 2370 |
|
|
memset(bssid, 0xfe, ETH_ALEN);
|
| 2371 |
|
|
#else
|
| 2372 |
|
|
/* Generate random, not broadcast, locally administered BSSID. Mix in
|
| 2373 |
|
|
* own MAC address to make sure that devices that do not have proper
|
| 2374 |
|
|
* random number generator get different BSSID. */
|
| 2375 |
|
|
get_random_bytes(bssid, ETH_ALEN);
|
| 2376 |
|
|
for (i = 0; i < ETH_ALEN; i++)
|
| 2377 |
|
|
bssid[i] ^= dev->dev_addr[i];
|
| 2378 |
|
|
bssid[0] &= ~0x01;
|
| 2379 |
|
|
bssid[0] |= 0x02;
|
| 2380 |
|
|
#endif
|
| 2381 |
|
|
|
| 2382 |
|
|
printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n",
|
| 2383 |
|
|
dev->name, print_mac(mac, bssid));
|
| 2384 |
|
|
|
| 2385 |
|
|
bss = ieee80211_rx_bss_add(dev, bssid, local->hw.conf.channel,
|
| 2386 |
|
|
sdata->u.sta.ssid, sdata->u.sta.ssid_len);
|
| 2387 |
|
|
if (!bss)
|
| 2388 |
|
|
return -ENOMEM;
|
| 2389 |
|
|
|
| 2390 |
|
|
mode = local->oper_hw_mode;
|
| 2391 |
|
|
|
| 2392 |
|
|
if (local->hw.conf.beacon_int == 0)
|
| 2393 |
|
|
local->hw.conf.beacon_int = 100;
|
| 2394 |
|
|
bss->beacon_int = local->hw.conf.beacon_int;
|
| 2395 |
|
|
bss->hw_mode = local->hw.conf.phymode;
|
| 2396 |
|
|
bss->freq = local->hw.conf.freq;
|
| 2397 |
|
|
bss->last_update = jiffies;
|
| 2398 |
|
|
bss->capability = WLAN_CAPABILITY_IBSS;
|
| 2399 |
|
|
if (sdata->default_key) {
|
| 2400 |
|
|
bss->capability |= WLAN_CAPABILITY_PRIVACY;
|
| 2401 |
|
|
} else
|
| 2402 |
|
|
sdata->drop_unencrypted = 0;
|
| 2403 |
|
|
bss->supp_rates_len = mode->num_rates;
|
| 2404 |
|
|
pos = bss->supp_rates;
|
| 2405 |
|
|
for (i = 0; i < mode->num_rates; i++) {
|
| 2406 |
|
|
int rate = mode->rates[i].rate;
|
| 2407 |
|
|
*pos++ = (u8) (rate / 5);
|
| 2408 |
|
|
}
|
| 2409 |
|
|
|
| 2410 |
|
|
return ieee80211_sta_join_ibss(dev, ifsta, bss);
|
| 2411 |
|
|
}
|
| 2412 |
|
|
|
| 2413 |
|
|
|
| 2414 |
|
|
static int ieee80211_sta_find_ibss(struct net_device *dev,
|
| 2415 |
|
|
struct ieee80211_if_sta *ifsta)
|
| 2416 |
|
|
{
|
| 2417 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2418 |
|
|
struct ieee80211_sta_bss *bss;
|
| 2419 |
|
|
int found = 0;
|
| 2420 |
|
|
u8 bssid[ETH_ALEN];
|
| 2421 |
|
|
int active_ibss;
|
| 2422 |
|
|
DECLARE_MAC_BUF(mac);
|
| 2423 |
|
|
DECLARE_MAC_BUF(mac2);
|
| 2424 |
|
|
|
| 2425 |
|
|
if (ifsta->ssid_len == 0)
|
| 2426 |
|
|
return -EINVAL;
|
| 2427 |
|
|
|
| 2428 |
|
|
active_ibss = ieee80211_sta_active_ibss(dev);
|
| 2429 |
|
|
#ifdef CONFIG_MAC80211_IBSS_DEBUG
|
| 2430 |
|
|
printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
|
| 2431 |
|
|
dev->name, active_ibss);
|
| 2432 |
|
|
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
|
| 2433 |
|
|
spin_lock_bh(&local->sta_bss_lock);
|
| 2434 |
|
|
list_for_each_entry(bss, &local->sta_bss_list, list) {
|
| 2435 |
|
|
if (ifsta->ssid_len != bss->ssid_len ||
|
| 2436 |
|
|
memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0
|
| 2437 |
|
|
|| !(bss->capability & WLAN_CAPABILITY_IBSS))
|
| 2438 |
|
|
continue;
|
| 2439 |
|
|
#ifdef CONFIG_MAC80211_IBSS_DEBUG
|
| 2440 |
|
|
printk(KERN_DEBUG " bssid=%s found\n",
|
| 2441 |
|
|
print_mac(mac, bss->bssid));
|
| 2442 |
|
|
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
|
| 2443 |
|
|
memcpy(bssid, bss->bssid, ETH_ALEN);
|
| 2444 |
|
|
found = 1;
|
| 2445 |
|
|
if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0)
|
| 2446 |
|
|
break;
|
| 2447 |
|
|
}
|
| 2448 |
|
|
spin_unlock_bh(&local->sta_bss_lock);
|
| 2449 |
|
|
|
| 2450 |
|
|
#ifdef CONFIG_MAC80211_IBSS_DEBUG
|
| 2451 |
|
|
printk(KERN_DEBUG " sta_find_ibss: selected %s current "
|
| 2452 |
|
|
"%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid));
|
| 2453 |
|
|
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
|
| 2454 |
|
|
if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 &&
|
| 2455 |
|
|
(bss = ieee80211_rx_bss_get(dev, bssid, local->hw.conf.channel,
|
| 2456 |
|
|
ifsta->ssid, ifsta->ssid_len))) {
|
| 2457 |
|
|
printk(KERN_DEBUG "%s: Selected IBSS BSSID %s"
|
| 2458 |
|
|
" based on configured SSID\n",
|
| 2459 |
|
|
dev->name, print_mac(mac, bssid));
|
| 2460 |
|
|
return ieee80211_sta_join_ibss(dev, ifsta, bss);
|
| 2461 |
|
|
}
|
| 2462 |
|
|
#ifdef CONFIG_MAC80211_IBSS_DEBUG
|
| 2463 |
|
|
printk(KERN_DEBUG " did not try to join ibss\n");
|
| 2464 |
|
|
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
|
| 2465 |
|
|
|
| 2466 |
|
|
/* Selected IBSS not found in current scan results - try to scan */
|
| 2467 |
|
|
if (ifsta->state == IEEE80211_IBSS_JOINED &&
|
| 2468 |
|
|
!ieee80211_sta_active_ibss(dev)) {
|
| 2469 |
|
|
mod_timer(&ifsta->timer, jiffies +
|
| 2470 |
|
|
IEEE80211_IBSS_MERGE_INTERVAL);
|
| 2471 |
|
|
} else if (time_after(jiffies, local->last_scan_completed +
|
| 2472 |
|
|
IEEE80211_SCAN_INTERVAL)) {
|
| 2473 |
|
|
printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
|
| 2474 |
|
|
"join\n", dev->name);
|
| 2475 |
|
|
return ieee80211_sta_req_scan(dev, ifsta->ssid,
|
| 2476 |
|
|
ifsta->ssid_len);
|
| 2477 |
|
|
} else if (ifsta->state != IEEE80211_IBSS_JOINED) {
|
| 2478 |
|
|
int interval = IEEE80211_SCAN_INTERVAL;
|
| 2479 |
|
|
|
| 2480 |
|
|
if (time_after(jiffies, ifsta->ibss_join_req +
|
| 2481 |
|
|
IEEE80211_IBSS_JOIN_TIMEOUT)) {
|
| 2482 |
|
|
if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) &&
|
| 2483 |
|
|
local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)
|
| 2484 |
|
|
return ieee80211_sta_create_ibss(dev, ifsta);
|
| 2485 |
|
|
if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) {
|
| 2486 |
|
|
printk(KERN_DEBUG "%s: IBSS not allowed on the"
|
| 2487 |
|
|
" configured channel %d (%d MHz)\n",
|
| 2488 |
|
|
dev->name, local->hw.conf.channel,
|
| 2489 |
|
|
local->hw.conf.freq);
|
| 2490 |
|
|
}
|
| 2491 |
|
|
|
| 2492 |
|
|
/* No IBSS found - decrease scan interval and continue
|
| 2493 |
|
|
* scanning. */
|
| 2494 |
|
|
interval = IEEE80211_SCAN_INTERVAL_SLOW;
|
| 2495 |
|
|
}
|
| 2496 |
|
|
|
| 2497 |
|
|
ifsta->state = IEEE80211_IBSS_SEARCH;
|
| 2498 |
|
|
mod_timer(&ifsta->timer, jiffies + interval);
|
| 2499 |
|
|
return 0;
|
| 2500 |
|
|
}
|
| 2501 |
|
|
|
| 2502 |
|
|
return 0;
|
| 2503 |
|
|
}
|
| 2504 |
|
|
|
| 2505 |
|
|
|
| 2506 |
|
|
int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len)
|
| 2507 |
|
|
{
|
| 2508 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 2509 |
|
|
struct ieee80211_if_sta *ifsta;
|
| 2510 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2511 |
|
|
|
| 2512 |
|
|
if (len > IEEE80211_MAX_SSID_LEN)
|
| 2513 |
|
|
return -EINVAL;
|
| 2514 |
|
|
|
| 2515 |
|
|
/* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
|
| 2516 |
|
|
* not defined. */
|
| 2517 |
|
|
if (local->ops->conf_tx) {
|
| 2518 |
|
|
struct ieee80211_tx_queue_params qparam;
|
| 2519 |
|
|
int i;
|
| 2520 |
|
|
|
| 2521 |
|
|
memset(&qparam, 0, sizeof(qparam));
|
| 2522 |
|
|
/* TODO: are these ok defaults for all hw_modes? */
|
| 2523 |
|
|
qparam.aifs = 2;
|
| 2524 |
|
|
qparam.cw_min =
|
| 2525 |
|
|
local->hw.conf.phymode == MODE_IEEE80211B ? 31 : 15;
|
| 2526 |
|
|
qparam.cw_max = 1023;
|
| 2527 |
|
|
qparam.burst_time = 0;
|
| 2528 |
|
|
for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
|
| 2529 |
|
|
{
|
| 2530 |
|
|
local->ops->conf_tx(local_to_hw(local),
|
| 2531 |
|
|
i + IEEE80211_TX_QUEUE_DATA0,
|
| 2532 |
|
|
&qparam);
|
| 2533 |
|
|
}
|
| 2534 |
|
|
/* IBSS uses different parameters for Beacon sending */
|
| 2535 |
|
|
qparam.cw_min++;
|
| 2536 |
|
|
qparam.cw_min *= 2;
|
| 2537 |
|
|
qparam.cw_min--;
|
| 2538 |
|
|
local->ops->conf_tx(local_to_hw(local),
|
| 2539 |
|
|
IEEE80211_TX_QUEUE_BEACON, &qparam);
|
| 2540 |
|
|
}
|
| 2541 |
|
|
|
| 2542 |
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2543 |
|
|
ifsta = &sdata->u.sta;
|
| 2544 |
|
|
|
| 2545 |
|
|
if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0)
|
| 2546 |
|
|
ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
|
| 2547 |
|
|
memcpy(ifsta->ssid, ssid, len);
|
| 2548 |
|
|
memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len);
|
| 2549 |
|
|
ifsta->ssid_len = len;
|
| 2550 |
|
|
|
| 2551 |
|
|
if (len)
|
| 2552 |
|
|
ifsta->flags |= IEEE80211_STA_SSID_SET;
|
| 2553 |
|
|
else
|
| 2554 |
|
|
ifsta->flags &= ~IEEE80211_STA_SSID_SET;
|
| 2555 |
|
|
if (sdata->type == IEEE80211_IF_TYPE_IBSS &&
|
| 2556 |
|
|
!(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
|
| 2557 |
|
|
ifsta->ibss_join_req = jiffies;
|
| 2558 |
|
|
ifsta->state = IEEE80211_IBSS_SEARCH;
|
| 2559 |
|
|
return ieee80211_sta_find_ibss(dev, ifsta);
|
| 2560 |
|
|
}
|
| 2561 |
|
|
return 0;
|
| 2562 |
|
|
}
|
| 2563 |
|
|
|
| 2564 |
|
|
|
| 2565 |
|
|
int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len)
|
| 2566 |
|
|
{
|
| 2567 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2568 |
|
|
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
|
| 2569 |
|
|
memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
|
| 2570 |
|
|
*len = ifsta->ssid_len;
|
| 2571 |
|
|
return 0;
|
| 2572 |
|
|
}
|
| 2573 |
|
|
|
| 2574 |
|
|
|
| 2575 |
|
|
int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid)
|
| 2576 |
|
|
{
|
| 2577 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 2578 |
|
|
struct ieee80211_if_sta *ifsta;
|
| 2579 |
|
|
int res;
|
| 2580 |
|
|
|
| 2581 |
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2582 |
|
|
ifsta = &sdata->u.sta;
|
| 2583 |
|
|
|
| 2584 |
|
|
if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
|
| 2585 |
|
|
memcpy(ifsta->bssid, bssid, ETH_ALEN);
|
| 2586 |
|
|
res = ieee80211_if_config(dev);
|
| 2587 |
|
|
if (res) {
|
| 2588 |
|
|
printk(KERN_DEBUG "%s: Failed to config new BSSID to "
|
| 2589 |
|
|
"the low-level driver\n", dev->name);
|
| 2590 |
|
|
return res;
|
| 2591 |
|
|
}
|
| 2592 |
|
|
}
|
| 2593 |
|
|
|
| 2594 |
|
|
if (is_valid_ether_addr(bssid))
|
| 2595 |
|
|
ifsta->flags |= IEEE80211_STA_BSSID_SET;
|
| 2596 |
|
|
else
|
| 2597 |
|
|
ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
|
| 2598 |
|
|
|
| 2599 |
|
|
return 0;
|
| 2600 |
|
|
}
|
| 2601 |
|
|
|
| 2602 |
|
|
|
| 2603 |
|
|
static void ieee80211_send_nullfunc(struct ieee80211_local *local,
|
| 2604 |
|
|
struct ieee80211_sub_if_data *sdata,
|
| 2605 |
|
|
int powersave)
|
| 2606 |
|
|
{
|
| 2607 |
|
|
struct sk_buff *skb;
|
| 2608 |
|
|
struct ieee80211_hdr *nullfunc;
|
| 2609 |
|
|
u16 fc;
|
| 2610 |
|
|
|
| 2611 |
|
|
skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
|
| 2612 |
|
|
if (!skb) {
|
| 2613 |
|
|
printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
|
| 2614 |
|
|
"frame\n", sdata->dev->name);
|
| 2615 |
|
|
return;
|
| 2616 |
|
|
}
|
| 2617 |
|
|
skb_reserve(skb, local->hw.extra_tx_headroom);
|
| 2618 |
|
|
|
| 2619 |
|
|
nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
|
| 2620 |
|
|
memset(nullfunc, 0, 24);
|
| 2621 |
|
|
fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
|
| 2622 |
|
|
IEEE80211_FCTL_TODS;
|
| 2623 |
|
|
if (powersave)
|
| 2624 |
|
|
fc |= IEEE80211_FCTL_PM;
|
| 2625 |
|
|
nullfunc->frame_control = cpu_to_le16(fc);
|
| 2626 |
|
|
memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN);
|
| 2627 |
|
|
memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
|
| 2628 |
|
|
memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN);
|
| 2629 |
|
|
|
| 2630 |
|
|
ieee80211_sta_tx(sdata->dev, skb, 0);
|
| 2631 |
|
|
}
|
| 2632 |
|
|
|
| 2633 |
|
|
|
| 2634 |
|
|
void ieee80211_scan_completed(struct ieee80211_hw *hw)
|
| 2635 |
|
|
{
|
| 2636 |
|
|
struct ieee80211_local *local = hw_to_local(hw);
|
| 2637 |
|
|
struct net_device *dev = local->scan_dev;
|
| 2638 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 2639 |
|
|
union iwreq_data wrqu;
|
| 2640 |
|
|
|
| 2641 |
|
|
local->last_scan_completed = jiffies;
|
| 2642 |
|
|
wmb();
|
| 2643 |
|
|
local->sta_scanning = 0;
|
| 2644 |
|
|
|
| 2645 |
|
|
if (ieee80211_hw_config(local))
|
| 2646 |
|
|
printk(KERN_DEBUG "%s: failed to restore operational "
|
| 2647 |
|
|
"channel after scan\n", dev->name);
|
| 2648 |
|
|
|
| 2649 |
|
|
|
| 2650 |
|
|
netif_tx_lock_bh(local->mdev);
|
| 2651 |
|
|
local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC;
|
| 2652 |
|
|
local->ops->configure_filter(local_to_hw(local),
|
| 2653 |
|
|
FIF_BCN_PRBRESP_PROMISC,
|
| 2654 |
|
|
&local->filter_flags,
|
| 2655 |
|
|
local->mdev->mc_count,
|
| 2656 |
|
|
local->mdev->mc_list);
|
| 2657 |
|
|
|
| 2658 |
|
|
netif_tx_unlock_bh(local->mdev);
|
| 2659 |
|
|
|
| 2660 |
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
| 2661 |
|
|
wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL);
|
| 2662 |
|
|
|
| 2663 |
|
|
rcu_read_lock();
|
| 2664 |
|
|
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
|
| 2665 |
|
|
|
| 2666 |
|
|
/* No need to wake the master device. */
|
| 2667 |
|
|
if (sdata->dev == local->mdev)
|
| 2668 |
|
|
continue;
|
| 2669 |
|
|
|
| 2670 |
|
|
if (sdata->type == IEEE80211_IF_TYPE_STA) {
|
| 2671 |
|
|
if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)
|
| 2672 |
|
|
ieee80211_send_nullfunc(local, sdata, 0);
|
| 2673 |
|
|
ieee80211_sta_timer((unsigned long)sdata);
|
| 2674 |
|
|
}
|
| 2675 |
|
|
|
| 2676 |
|
|
netif_wake_queue(sdata->dev);
|
| 2677 |
|
|
}
|
| 2678 |
|
|
rcu_read_unlock();
|
| 2679 |
|
|
|
| 2680 |
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2681 |
|
|
if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
|
| 2682 |
|
|
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
|
| 2683 |
|
|
if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) ||
|
| 2684 |
|
|
(!ifsta->state == IEEE80211_IBSS_JOINED &&
|
| 2685 |
|
|
!ieee80211_sta_active_ibss(dev)))
|
| 2686 |
|
|
ieee80211_sta_find_ibss(dev, ifsta);
|
| 2687 |
|
|
}
|
| 2688 |
|
|
}
|
| 2689 |
|
|
EXPORT_SYMBOL(ieee80211_scan_completed);
|
| 2690 |
|
|
|
| 2691 |
|
|
void ieee80211_sta_scan_work(struct work_struct *work)
|
| 2692 |
|
|
{
|
| 2693 |
|
|
struct ieee80211_local *local =
|
| 2694 |
|
|
container_of(work, struct ieee80211_local, scan_work.work);
|
| 2695 |
|
|
struct net_device *dev = local->scan_dev;
|
| 2696 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2697 |
|
|
struct ieee80211_hw_mode *mode;
|
| 2698 |
|
|
struct ieee80211_channel *chan;
|
| 2699 |
|
|
int skip;
|
| 2700 |
|
|
unsigned long next_delay = 0;
|
| 2701 |
|
|
|
| 2702 |
|
|
if (!local->sta_scanning)
|
| 2703 |
|
|
return;
|
| 2704 |
|
|
|
| 2705 |
|
|
switch (local->scan_state) {
|
| 2706 |
|
|
case SCAN_SET_CHANNEL:
|
| 2707 |
|
|
mode = local->scan_hw_mode;
|
| 2708 |
|
|
if (local->scan_hw_mode->list.next == &local->modes_list &&
|
| 2709 |
|
|
local->scan_channel_idx >= mode->num_channels) {
|
| 2710 |
|
|
ieee80211_scan_completed(local_to_hw(local));
|
| 2711 |
|
|
return;
|
| 2712 |
|
|
}
|
| 2713 |
|
|
skip = !(local->enabled_modes & (1 << mode->mode));
|
| 2714 |
|
|
chan = &mode->channels[local->scan_channel_idx];
|
| 2715 |
|
|
if (!(chan->flag & IEEE80211_CHAN_W_SCAN) ||
|
| 2716 |
|
|
(sdata->type == IEEE80211_IF_TYPE_IBSS &&
|
| 2717 |
|
|
!(chan->flag & IEEE80211_CHAN_W_IBSS)) ||
|
| 2718 |
|
|
(local->hw_modes & local->enabled_modes &
|
| 2719 |
|
|
(1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B))
|
| 2720 |
|
|
skip = 1;
|
| 2721 |
|
|
|
| 2722 |
|
|
if (!skip) {
|
| 2723 |
|
|
#if 0
|
| 2724 |
|
|
printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n",
|
| 2725 |
|
|
dev->name, chan->chan, chan->freq);
|
| 2726 |
|
|
#endif
|
| 2727 |
|
|
|
| 2728 |
|
|
local->scan_channel = chan;
|
| 2729 |
|
|
if (ieee80211_hw_config(local)) {
|
| 2730 |
|
|
printk(KERN_DEBUG "%s: failed to set channel "
|
| 2731 |
|
|
"%d (%d MHz) for scan\n", dev->name,
|
| 2732 |
|
|
chan->chan, chan->freq);
|
| 2733 |
|
|
skip = 1;
|
| 2734 |
|
|
}
|
| 2735 |
|
|
}
|
| 2736 |
|
|
|
| 2737 |
|
|
local->scan_channel_idx++;
|
| 2738 |
|
|
if (local->scan_channel_idx >= local->scan_hw_mode->num_channels) {
|
| 2739 |
|
|
if (local->scan_hw_mode->list.next != &local->modes_list) {
|
| 2740 |
|
|
local->scan_hw_mode = list_entry(local->scan_hw_mode->list.next,
|
| 2741 |
|
|
struct ieee80211_hw_mode,
|
| 2742 |
|
|
list);
|
| 2743 |
|
|
local->scan_channel_idx = 0;
|
| 2744 |
|
|
}
|
| 2745 |
|
|
}
|
| 2746 |
|
|
|
| 2747 |
|
|
if (skip)
|
| 2748 |
|
|
break;
|
| 2749 |
|
|
|
| 2750 |
|
|
next_delay = IEEE80211_PROBE_DELAY +
|
| 2751 |
|
|
usecs_to_jiffies(local->hw.channel_change_time);
|
| 2752 |
|
|
local->scan_state = SCAN_SEND_PROBE;
|
| 2753 |
|
|
break;
|
| 2754 |
|
|
case SCAN_SEND_PROBE:
|
| 2755 |
|
|
if (local->scan_channel->flag & IEEE80211_CHAN_W_ACTIVE_SCAN) {
|
| 2756 |
|
|
ieee80211_send_probe_req(dev, NULL, local->scan_ssid,
|
| 2757 |
|
|
local->scan_ssid_len);
|
| 2758 |
|
|
next_delay = IEEE80211_CHANNEL_TIME;
|
| 2759 |
|
|
} else
|
| 2760 |
|
|
next_delay = IEEE80211_PASSIVE_CHANNEL_TIME;
|
| 2761 |
|
|
local->scan_state = SCAN_SET_CHANNEL;
|
| 2762 |
|
|
break;
|
| 2763 |
|
|
}
|
| 2764 |
|
|
|
| 2765 |
|
|
if (local->sta_scanning)
|
| 2766 |
|
|
queue_delayed_work(local->hw.workqueue, &local->scan_work,
|
| 2767 |
|
|
next_delay);
|
| 2768 |
|
|
}
|
| 2769 |
|
|
|
| 2770 |
|
|
|
| 2771 |
|
|
static int ieee80211_sta_start_scan(struct net_device *dev,
|
| 2772 |
|
|
u8 *ssid, size_t ssid_len)
|
| 2773 |
|
|
{
|
| 2774 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2775 |
|
|
struct ieee80211_sub_if_data *sdata;
|
| 2776 |
|
|
|
| 2777 |
|
|
if (ssid_len > IEEE80211_MAX_SSID_LEN)
|
| 2778 |
|
|
return -EINVAL;
|
| 2779 |
|
|
|
| 2780 |
|
|
/* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
|
| 2781 |
|
|
* BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
|
| 2782 |
|
|
* BSSID: MACAddress
|
| 2783 |
|
|
* SSID
|
| 2784 |
|
|
* ScanType: ACTIVE, PASSIVE
|
| 2785 |
|
|
* ProbeDelay: delay (in microseconds) to be used prior to transmitting
|
| 2786 |
|
|
* a Probe frame during active scanning
|
| 2787 |
|
|
* ChannelList
|
| 2788 |
|
|
* MinChannelTime (>= ProbeDelay), in TU
|
| 2789 |
|
|
* MaxChannelTime: (>= MinChannelTime), in TU
|
| 2790 |
|
|
*/
|
| 2791 |
|
|
|
| 2792 |
|
|
/* MLME-SCAN.confirm
|
| 2793 |
|
|
* BSSDescriptionSet
|
| 2794 |
|
|
* ResultCode: SUCCESS, INVALID_PARAMETERS
|
| 2795 |
|
|
*/
|
| 2796 |
|
|
|
| 2797 |
|
|
if (local->sta_scanning) {
|
| 2798 |
|
|
if (local->scan_dev == dev)
|
| 2799 |
|
|
return 0;
|
| 2800 |
|
|
return -EBUSY;
|
| 2801 |
|
|
}
|
| 2802 |
|
|
|
| 2803 |
|
|
if (local->ops->hw_scan) {
|
| 2804 |
|
|
int rc = local->ops->hw_scan(local_to_hw(local),
|
| 2805 |
|
|
ssid, ssid_len);
|
| 2806 |
|
|
if (!rc) {
|
| 2807 |
|
|
local->sta_scanning = 1;
|
| 2808 |
|
|
local->scan_dev = dev;
|
| 2809 |
|
|
}
|
| 2810 |
|
|
return rc;
|
| 2811 |
|
|
}
|
| 2812 |
|
|
|
| 2813 |
|
|
local->sta_scanning = 1;
|
| 2814 |
|
|
|
| 2815 |
|
|
rcu_read_lock();
|
| 2816 |
|
|
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
|
| 2817 |
|
|
|
| 2818 |
|
|
/* Don't stop the master interface, otherwise we can't transmit
|
| 2819 |
|
|
* probes! */
|
| 2820 |
|
|
if (sdata->dev == local->mdev)
|
| 2821 |
|
|
continue;
|
| 2822 |
|
|
|
| 2823 |
|
|
netif_stop_queue(sdata->dev);
|
| 2824 |
|
|
if (sdata->type == IEEE80211_IF_TYPE_STA &&
|
| 2825 |
|
|
(sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED))
|
| 2826 |
|
|
ieee80211_send_nullfunc(local, sdata, 1);
|
| 2827 |
|
|
}
|
| 2828 |
|
|
rcu_read_unlock();
|
| 2829 |
|
|
|
| 2830 |
|
|
if (ssid) {
|
| 2831 |
|
|
local->scan_ssid_len = ssid_len;
|
| 2832 |
|
|
memcpy(local->scan_ssid, ssid, ssid_len);
|
| 2833 |
|
|
} else
|
| 2834 |
|
|
local->scan_ssid_len = 0;
|
| 2835 |
|
|
local->scan_state = SCAN_SET_CHANNEL;
|
| 2836 |
|
|
local->scan_hw_mode = list_entry(local->modes_list.next,
|
| 2837 |
|
|
struct ieee80211_hw_mode,
|
| 2838 |
|
|
list);
|
| 2839 |
|
|
local->scan_channel_idx = 0;
|
| 2840 |
|
|
local->scan_dev = dev;
|
| 2841 |
|
|
|
| 2842 |
|
|
netif_tx_lock_bh(local->mdev);
|
| 2843 |
|
|
local->filter_flags |= FIF_BCN_PRBRESP_PROMISC;
|
| 2844 |
|
|
local->ops->configure_filter(local_to_hw(local),
|
| 2845 |
|
|
FIF_BCN_PRBRESP_PROMISC,
|
| 2846 |
|
|
&local->filter_flags,
|
| 2847 |
|
|
local->mdev->mc_count,
|
| 2848 |
|
|
local->mdev->mc_list);
|
| 2849 |
|
|
netif_tx_unlock_bh(local->mdev);
|
| 2850 |
|
|
|
| 2851 |
|
|
/* TODO: start scan as soon as all nullfunc frames are ACKed */
|
| 2852 |
|
|
queue_delayed_work(local->hw.workqueue, &local->scan_work,
|
| 2853 |
|
|
IEEE80211_CHANNEL_TIME);
|
| 2854 |
|
|
|
| 2855 |
|
|
return 0;
|
| 2856 |
|
|
}
|
| 2857 |
|
|
|
| 2858 |
|
|
|
| 2859 |
|
|
int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len)
|
| 2860 |
|
|
{
|
| 2861 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 2862 |
|
|
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
|
| 2863 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2864 |
|
|
|
| 2865 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_STA)
|
| 2866 |
|
|
return ieee80211_sta_start_scan(dev, ssid, ssid_len);
|
| 2867 |
|
|
|
| 2868 |
|
|
if (local->sta_scanning) {
|
| 2869 |
|
|
if (local->scan_dev == dev)
|
| 2870 |
|
|
return 0;
|
| 2871 |
|
|
return -EBUSY;
|
| 2872 |
|
|
}
|
| 2873 |
|
|
|
| 2874 |
|
|
ifsta->scan_ssid_len = ssid_len;
|
| 2875 |
|
|
if (ssid_len)
|
| 2876 |
|
|
memcpy(ifsta->scan_ssid, ssid, ssid_len);
|
| 2877 |
|
|
set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request);
|
| 2878 |
|
|
queue_work(local->hw.workqueue, &ifsta->work);
|
| 2879 |
|
|
return 0;
|
| 2880 |
|
|
}
|
| 2881 |
|
|
|
| 2882 |
|
|
static char *
|
| 2883 |
|
|
ieee80211_sta_scan_result(struct net_device *dev,
|
| 2884 |
|
|
struct ieee80211_sta_bss *bss,
|
| 2885 |
|
|
char *current_ev, char *end_buf)
|
| 2886 |
|
|
{
|
| 2887 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 2888 |
|
|
struct iw_event iwe;
|
| 2889 |
|
|
|
| 2890 |
|
|
if (time_after(jiffies,
|
| 2891 |
|
|
bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE))
|
| 2892 |
|
|
return current_ev;
|
| 2893 |
|
|
|
| 2894 |
|
|
if (!(local->enabled_modes & (1 << bss->hw_mode)))
|
| 2895 |
|
|
return current_ev;
|
| 2896 |
|
|
|
| 2897 |
|
|
if (local->scan_flags & IEEE80211_SCAN_WPA_ONLY &&
|
| 2898 |
|
|
!bss->wpa_ie && !bss->rsn_ie)
|
| 2899 |
|
|
return current_ev;
|
| 2900 |
|
|
|
| 2901 |
|
|
if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID &&
|
| 2902 |
|
|
(local->scan_ssid_len != bss->ssid_len ||
|
| 2903 |
|
|
memcmp(local->scan_ssid, bss->ssid, bss->ssid_len) != 0))
|
| 2904 |
|
|
return current_ev;
|
| 2905 |
|
|
|
| 2906 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 2907 |
|
|
iwe.cmd = SIOCGIWAP;
|
| 2908 |
|
|
iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
|
| 2909 |
|
|
memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
|
| 2910 |
|
|
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
|
| 2911 |
|
|
IW_EV_ADDR_LEN);
|
| 2912 |
|
|
|
| 2913 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 2914 |
|
|
iwe.cmd = SIOCGIWESSID;
|
| 2915 |
|
|
iwe.u.data.length = bss->ssid_len;
|
| 2916 |
|
|
iwe.u.data.flags = 1;
|
| 2917 |
|
|
current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
|
| 2918 |
|
|
bss->ssid);
|
| 2919 |
|
|
|
| 2920 |
|
|
if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
|
| 2921 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 2922 |
|
|
iwe.cmd = SIOCGIWMODE;
|
| 2923 |
|
|
if (bss->capability & WLAN_CAPABILITY_ESS)
|
| 2924 |
|
|
iwe.u.mode = IW_MODE_MASTER;
|
| 2925 |
|
|
else
|
| 2926 |
|
|
iwe.u.mode = IW_MODE_ADHOC;
|
| 2927 |
|
|
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
|
| 2928 |
|
|
IW_EV_UINT_LEN);
|
| 2929 |
|
|
}
|
| 2930 |
|
|
|
| 2931 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 2932 |
|
|
iwe.cmd = SIOCGIWFREQ;
|
| 2933 |
|
|
iwe.u.freq.m = bss->channel;
|
| 2934 |
|
|
iwe.u.freq.e = 0;
|
| 2935 |
|
|
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
|
| 2936 |
|
|
IW_EV_FREQ_LEN);
|
| 2937 |
|
|
iwe.u.freq.m = bss->freq * 100000;
|
| 2938 |
|
|
iwe.u.freq.e = 1;
|
| 2939 |
|
|
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
|
| 2940 |
|
|
IW_EV_FREQ_LEN);
|
| 2941 |
|
|
|
| 2942 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 2943 |
|
|
iwe.cmd = IWEVQUAL;
|
| 2944 |
|
|
iwe.u.qual.qual = bss->signal;
|
| 2945 |
|
|
iwe.u.qual.level = bss->rssi;
|
| 2946 |
|
|
iwe.u.qual.noise = bss->noise;
|
| 2947 |
|
|
iwe.u.qual.updated = local->wstats_flags;
|
| 2948 |
|
|
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe,
|
| 2949 |
|
|
IW_EV_QUAL_LEN);
|
| 2950 |
|
|
|
| 2951 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 2952 |
|
|
iwe.cmd = SIOCGIWENCODE;
|
| 2953 |
|
|
if (bss->capability & WLAN_CAPABILITY_PRIVACY)
|
| 2954 |
|
|
iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
|
| 2955 |
|
|
else
|
| 2956 |
|
|
iwe.u.data.flags = IW_ENCODE_DISABLED;
|
| 2957 |
|
|
iwe.u.data.length = 0;
|
| 2958 |
|
|
current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, "");
|
| 2959 |
|
|
|
| 2960 |
|
|
if (bss && bss->wpa_ie) {
|
| 2961 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 2962 |
|
|
iwe.cmd = IWEVGENIE;
|
| 2963 |
|
|
iwe.u.data.length = bss->wpa_ie_len;
|
| 2964 |
|
|
current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
|
| 2965 |
|
|
bss->wpa_ie);
|
| 2966 |
|
|
}
|
| 2967 |
|
|
|
| 2968 |
|
|
if (bss && bss->rsn_ie) {
|
| 2969 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 2970 |
|
|
iwe.cmd = IWEVGENIE;
|
| 2971 |
|
|
iwe.u.data.length = bss->rsn_ie_len;
|
| 2972 |
|
|
current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
|
| 2973 |
|
|
bss->rsn_ie);
|
| 2974 |
|
|
}
|
| 2975 |
|
|
|
| 2976 |
|
|
if (bss && bss->supp_rates_len > 0) {
|
| 2977 |
|
|
/* display all supported rates in readable format */
|
| 2978 |
|
|
char *p = current_ev + IW_EV_LCP_LEN;
|
| 2979 |
|
|
int i;
|
| 2980 |
|
|
|
| 2981 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 2982 |
|
|
iwe.cmd = SIOCGIWRATE;
|
| 2983 |
|
|
/* Those two flags are ignored... */
|
| 2984 |
|
|
iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
|
| 2985 |
|
|
|
| 2986 |
|
|
for (i = 0; i < bss->supp_rates_len; i++) {
|
| 2987 |
|
|
iwe.u.bitrate.value = ((bss->supp_rates[i] &
|
| 2988 |
|
|
0x7f) * 500000);
|
| 2989 |
|
|
p = iwe_stream_add_value(current_ev, p,
|
| 2990 |
|
|
end_buf, &iwe, IW_EV_PARAM_LEN);
|
| 2991 |
|
|
}
|
| 2992 |
|
|
current_ev = p;
|
| 2993 |
|
|
}
|
| 2994 |
|
|
|
| 2995 |
|
|
if (bss) {
|
| 2996 |
|
|
char *buf;
|
| 2997 |
|
|
buf = kmalloc(30, GFP_ATOMIC);
|
| 2998 |
|
|
if (buf) {
|
| 2999 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 3000 |
|
|
iwe.cmd = IWEVCUSTOM;
|
| 3001 |
|
|
sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp));
|
| 3002 |
|
|
iwe.u.data.length = strlen(buf);
|
| 3003 |
|
|
current_ev = iwe_stream_add_point(current_ev, end_buf,
|
| 3004 |
|
|
&iwe, buf);
|
| 3005 |
|
|
kfree(buf);
|
| 3006 |
|
|
}
|
| 3007 |
|
|
}
|
| 3008 |
|
|
|
| 3009 |
|
|
do {
|
| 3010 |
|
|
char *buf;
|
| 3011 |
|
|
|
| 3012 |
|
|
if (!(local->scan_flags & IEEE80211_SCAN_EXTRA_INFO))
|
| 3013 |
|
|
break;
|
| 3014 |
|
|
|
| 3015 |
|
|
buf = kmalloc(100, GFP_ATOMIC);
|
| 3016 |
|
|
if (!buf)
|
| 3017 |
|
|
break;
|
| 3018 |
|
|
|
| 3019 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 3020 |
|
|
iwe.cmd = IWEVCUSTOM;
|
| 3021 |
|
|
sprintf(buf, "bcn_int=%d", bss->beacon_int);
|
| 3022 |
|
|
iwe.u.data.length = strlen(buf);
|
| 3023 |
|
|
current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
|
| 3024 |
|
|
buf);
|
| 3025 |
|
|
|
| 3026 |
|
|
memset(&iwe, 0, sizeof(iwe));
|
| 3027 |
|
|
iwe.cmd = IWEVCUSTOM;
|
| 3028 |
|
|
sprintf(buf, "capab=0x%04x", bss->capability);
|
| 3029 |
|
|
iwe.u.data.length = strlen(buf);
|
| 3030 |
|
|
current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe,
|
| 3031 |
|
|
buf);
|
| 3032 |
|
|
|
| 3033 |
|
|
kfree(buf);
|
| 3034 |
|
|
break;
|
| 3035 |
|
|
} while (0);
|
| 3036 |
|
|
|
| 3037 |
|
|
return current_ev;
|
| 3038 |
|
|
}
|
| 3039 |
|
|
|
| 3040 |
|
|
|
| 3041 |
|
|
int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len)
|
| 3042 |
|
|
{
|
| 3043 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 3044 |
|
|
char *current_ev = buf;
|
| 3045 |
|
|
char *end_buf = buf + len;
|
| 3046 |
|
|
struct ieee80211_sta_bss *bss;
|
| 3047 |
|
|
|
| 3048 |
|
|
spin_lock_bh(&local->sta_bss_lock);
|
| 3049 |
|
|
list_for_each_entry(bss, &local->sta_bss_list, list) {
|
| 3050 |
|
|
if (buf + len - current_ev <= IW_EV_ADDR_LEN) {
|
| 3051 |
|
|
spin_unlock_bh(&local->sta_bss_lock);
|
| 3052 |
|
|
return -E2BIG;
|
| 3053 |
|
|
}
|
| 3054 |
|
|
current_ev = ieee80211_sta_scan_result(dev, bss, current_ev,
|
| 3055 |
|
|
end_buf);
|
| 3056 |
|
|
}
|
| 3057 |
|
|
spin_unlock_bh(&local->sta_bss_lock);
|
| 3058 |
|
|
return current_ev - buf;
|
| 3059 |
|
|
}
|
| 3060 |
|
|
|
| 3061 |
|
|
|
| 3062 |
|
|
int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len)
|
| 3063 |
|
|
{
|
| 3064 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 3065 |
|
|
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
|
| 3066 |
|
|
kfree(ifsta->extra_ie);
|
| 3067 |
|
|
if (len == 0) {
|
| 3068 |
|
|
ifsta->extra_ie = NULL;
|
| 3069 |
|
|
ifsta->extra_ie_len = 0;
|
| 3070 |
|
|
return 0;
|
| 3071 |
|
|
}
|
| 3072 |
|
|
ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
|
| 3073 |
|
|
if (!ifsta->extra_ie) {
|
| 3074 |
|
|
ifsta->extra_ie_len = 0;
|
| 3075 |
|
|
return -ENOMEM;
|
| 3076 |
|
|
}
|
| 3077 |
|
|
memcpy(ifsta->extra_ie, ie, len);
|
| 3078 |
|
|
ifsta->extra_ie_len = len;
|
| 3079 |
|
|
return 0;
|
| 3080 |
|
|
}
|
| 3081 |
|
|
|
| 3082 |
|
|
|
| 3083 |
|
|
struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
|
| 3084 |
|
|
struct sk_buff *skb, u8 *bssid,
|
| 3085 |
|
|
u8 *addr)
|
| 3086 |
|
|
{
|
| 3087 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 3088 |
|
|
struct sta_info *sta;
|
| 3089 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 3090 |
|
|
DECLARE_MAC_BUF(mac);
|
| 3091 |
|
|
|
| 3092 |
|
|
/* TODO: Could consider removing the least recently used entry and
|
| 3093 |
|
|
* allow new one to be added. */
|
| 3094 |
|
|
if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
|
| 3095 |
|
|
if (net_ratelimit()) {
|
| 3096 |
|
|
printk(KERN_DEBUG "%s: No room for a new IBSS STA "
|
| 3097 |
|
|
"entry %s\n", dev->name, print_mac(mac, addr));
|
| 3098 |
|
|
}
|
| 3099 |
|
|
return NULL;
|
| 3100 |
|
|
}
|
| 3101 |
|
|
|
| 3102 |
|
|
printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
|
| 3103 |
|
|
wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name);
|
| 3104 |
|
|
|
| 3105 |
|
|
sta = sta_info_add(local, dev, addr, GFP_ATOMIC);
|
| 3106 |
|
|
if (!sta)
|
| 3107 |
|
|
return NULL;
|
| 3108 |
|
|
|
| 3109 |
|
|
sta->supp_rates = sdata->u.sta.supp_rates_bits;
|
| 3110 |
|
|
|
| 3111 |
|
|
rate_control_rate_init(sta, local);
|
| 3112 |
|
|
|
| 3113 |
|
|
return sta; /* caller will call sta_info_put() */
|
| 3114 |
|
|
}
|
| 3115 |
|
|
|
| 3116 |
|
|
|
| 3117 |
|
|
int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason)
|
| 3118 |
|
|
{
|
| 3119 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 3120 |
|
|
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
|
| 3121 |
|
|
|
| 3122 |
|
|
printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n",
|
| 3123 |
|
|
dev->name, reason);
|
| 3124 |
|
|
|
| 3125 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_STA &&
|
| 3126 |
|
|
sdata->type != IEEE80211_IF_TYPE_IBSS)
|
| 3127 |
|
|
return -EINVAL;
|
| 3128 |
|
|
|
| 3129 |
|
|
ieee80211_send_deauth(dev, ifsta, reason);
|
| 3130 |
|
|
ieee80211_set_disassoc(dev, ifsta, 1);
|
| 3131 |
|
|
return 0;
|
| 3132 |
|
|
}
|
| 3133 |
|
|
|
| 3134 |
|
|
|
| 3135 |
|
|
int ieee80211_sta_disassociate(struct net_device *dev, u16 reason)
|
| 3136 |
|
|
{
|
| 3137 |
|
|
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
|
| 3138 |
|
|
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
|
| 3139 |
|
|
|
| 3140 |
|
|
printk(KERN_DEBUG "%s: disassociate(reason=%d)\n",
|
| 3141 |
|
|
dev->name, reason);
|
| 3142 |
|
|
|
| 3143 |
|
|
if (sdata->type != IEEE80211_IF_TYPE_STA)
|
| 3144 |
|
|
return -EINVAL;
|
| 3145 |
|
|
|
| 3146 |
|
|
if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
|
| 3147 |
|
|
return -1;
|
| 3148 |
|
|
|
| 3149 |
|
|
ieee80211_send_disassoc(dev, ifsta, reason);
|
| 3150 |
|
|
ieee80211_set_disassoc(dev, ifsta, 0);
|
| 3151 |
|
|
return 0;
|
| 3152 |
|
|
}
|
