From 70fa84417711d7ee24118e5ee94b0056448ab9b5 Mon Sep 17 00:00:00 2001 From: nbd Date: Sat, 26 May 2007 16:35:32 +0000 Subject: nuke the old d80211 backport - will be replaced soon git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7340 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- package/d80211/src/ieee80211_sta.c | 2896 ------------------------------------ 1 file changed, 2896 deletions(-) delete mode 100644 package/d80211/src/ieee80211_sta.c (limited to 'package/d80211/src/ieee80211_sta.c') diff --git a/package/d80211/src/ieee80211_sta.c b/package/d80211/src/ieee80211_sta.c deleted file mode 100644 index feba62b05..000000000 --- a/package/d80211/src/ieee80211_sta.c +++ /dev/null @@ -1,2896 +0,0 @@ -/* - * BSS client mode implementation - * Copyright 2003, Jouni Malinen - * Copyright 2004, Instant802 Networks, Inc. - * Copyright 2005, Devicescape Software, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -/* TODO: - * BSS table: use as the key to support multi-SSID APs - * order BSS list by RSSI(?) ("quality of AP") - * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE, - * SSID) - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include "ieee80211_i.h" -#include "ieee80211_rate.h" -#include "hostapd_ioctl.h" - -#define IEEE80211_AUTH_TIMEOUT (HZ / 5) -#define IEEE80211_AUTH_MAX_TRIES 3 -#define IEEE80211_ASSOC_TIMEOUT (HZ / 5) -#define IEEE80211_ASSOC_MAX_TRIES 3 -#define IEEE80211_MONITORING_INTERVAL (2 * HZ) -#define IEEE80211_PROBE_INTERVAL (60 * HZ) -#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) -#define IEEE80211_SCAN_INTERVAL (2 * HZ) -#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) -#define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ) - -#define IEEE80211_PROBE_DELAY (HZ / 33) -#define IEEE80211_CHANNEL_TIME (HZ / 33) -#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5) -#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) -#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) -#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) - -#define IEEE80211_IBSS_MAX_STA_ENTRIES 128 - - -#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype) - -#define ERP_INFO_USE_PROTECTION BIT(1) - -static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, - u8 *ssid, size_t ssid_len); -static struct ieee80211_sta_bss * -ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid); -static void ieee80211_rx_bss_put(struct net_device *dev, - struct ieee80211_sta_bss *bss); -static int ieee80211_sta_find_ibss(struct net_device *dev, - struct ieee80211_if_sta *ifsta); -static int ieee80211_sta_wep_configured(struct net_device *dev); - - -/* Parsed Information Elements */ -struct ieee802_11_elems { - u8 *ssid; - u8 ssid_len; - u8 *supp_rates; - u8 supp_rates_len; - u8 *fh_params; - u8 fh_params_len; - u8 *ds_params; - u8 ds_params_len; - u8 *cf_params; - u8 cf_params_len; - u8 *tim; - u8 tim_len; - u8 *ibss_params; - u8 ibss_params_len; - u8 *challenge; - u8 challenge_len; - u8 *wpa; - u8 wpa_len; - u8 *rsn; - u8 rsn_len; - u8 *erp_info; - u8 erp_info_len; - u8 *ext_supp_rates; - u8 ext_supp_rates_len; - u8 *wmm_info; - u8 wmm_info_len; - u8 *wmm_param; - u8 wmm_param_len; -}; - -typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes; - - -static ParseRes ieee802_11_parse_elems(u8 *start, size_t len, - struct ieee802_11_elems *elems) -{ - size_t left = len; - u8 *pos = start; - int unknown = 0; - - memset(elems, 0, sizeof(*elems)); - - while (left >= 2) { - u8 id, elen; - - id = *pos++; - elen = *pos++; - left -= 2; - - if (elen > left) { -#if 0 - if (net_ratelimit()) - printk(KERN_DEBUG "IEEE 802.11 element parse " - "failed (id=%d elen=%d left=%d)\n", - id, elen, left); -#endif - return ParseFailed; - } - - switch (id) { - case WLAN_EID_SSID: - elems->ssid = pos; - elems->ssid_len = elen; - break; - case WLAN_EID_SUPP_RATES: - elems->supp_rates = pos; - elems->supp_rates_len = elen; - break; - case WLAN_EID_FH_PARAMS: - elems->fh_params = pos; - elems->fh_params_len = elen; - break; - case WLAN_EID_DS_PARAMS: - elems->ds_params = pos; - elems->ds_params_len = elen; - break; - case WLAN_EID_CF_PARAMS: - elems->cf_params = pos; - elems->cf_params_len = elen; - break; - case WLAN_EID_TIM: - elems->tim = pos; - elems->tim_len = elen; - break; - case WLAN_EID_IBSS_PARAMS: - elems->ibss_params = pos; - elems->ibss_params_len = elen; - break; - case WLAN_EID_CHALLENGE: - elems->challenge = pos; - elems->challenge_len = elen; - break; - case WLAN_EID_WPA: - if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && - pos[2] == 0xf2) { - /* Microsoft OUI (00:50:F2) */ - if (pos[3] == 1) { - /* OUI Type 1 - WPA IE */ - elems->wpa = pos; - elems->wpa_len = elen; - } else if (elen >= 5 && pos[3] == 2) { - if (pos[4] == 0) { - elems->wmm_info = pos; - elems->wmm_info_len = elen; - } else if (pos[4] == 1) { - elems->wmm_param = pos; - elems->wmm_param_len = elen; - } - } - } - break; - case WLAN_EID_RSN: - elems->rsn = pos; - elems->rsn_len = elen; - break; - case WLAN_EID_ERP_INFO: - elems->erp_info = pos; - elems->erp_info_len = elen; - break; - case WLAN_EID_EXT_SUPP_RATES: - elems->ext_supp_rates = pos; - elems->ext_supp_rates_len = elen; - break; - default: -#if 0 - printk(KERN_DEBUG "IEEE 802.11 element parse ignored " - "unknown element (id=%d elen=%d)\n", - id, elen); -#endif - unknown++; - break; - } - - left -= elen; - pos += elen; - } - - /* Do not trigger error if left == 1 as Apple Airport base stations - * send AssocResps that are one spurious byte too long. */ - - return unknown ? ParseUnknown : ParseOK; -} - - - - -static int ecw2cw(int ecw) -{ - int cw = 1; - while (ecw > 0) { - cw <<= 1; - ecw--; - } - return cw - 1; -} - - -static void ieee80211_sta_wmm_params(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - u8 *wmm_param, size_t wmm_param_len) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_tx_queue_params params; - size_t left; - int count; - u8 *pos; - - if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) - return; - count = wmm_param[6] & 0x0f; - if (count == ifsta->wmm_last_param_set) - return; - ifsta->wmm_last_param_set = count; - - pos = wmm_param + 8; - left = wmm_param_len - 8; - - memset(¶ms, 0, sizeof(params)); - - if (!local->ops->conf_tx) - return; - - local->wmm_acm = 0; - for (; left >= 4; left -= 4, pos += 4) { - int aci = (pos[0] >> 5) & 0x03; - int acm = (pos[0] >> 4) & 0x01; - int queue; - - switch (aci) { - case 1: - queue = IEEE80211_TX_QUEUE_DATA3; - if (acm) { - local->wmm_acm |= BIT(1) | BIT(2); - } - break; - case 2: - queue = IEEE80211_TX_QUEUE_DATA1; - if (acm) { - local->wmm_acm |= BIT(4) | BIT(5); - } - break; - case 3: - queue = IEEE80211_TX_QUEUE_DATA0; - if (acm) { - local->wmm_acm |= BIT(6) | BIT(7); - } - break; - case 0: - default: - queue = IEEE80211_TX_QUEUE_DATA2; - if (acm) { - local->wmm_acm |= BIT(0) | BIT(3); - } - break; - } - - params.aifs = pos[0] & 0x0f; - params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); - params.cw_min = ecw2cw(pos[1] & 0x0f); - /* TXOP is in units of 32 usec; burst_time in 0.1 ms */ - params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100; - printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " - "cWmin=%d cWmax=%d burst=%d\n", - dev->name, queue, aci, acm, params.aifs, params.cw_min, - params.cw_max, params.burst_time); - /* TODO: handle ACM (block TX, fallback to next lowest allowed - * AC for now) */ - if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { - printk(KERN_DEBUG "%s: failed to set TX queue " - "parameters for queue %d\n", dev->name, queue); - } - } -} - - -static void ieee80211_sta_send_associnfo(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - char *buf; - size_t len; - int i; - union iwreq_data wrqu; - - if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) - return; - - buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + - ifsta->assocresp_ies_len), GFP_ATOMIC); - if (!buf) - return; - - len = sprintf(buf, "ASSOCINFO("); - if (ifsta->assocreq_ies) { - len += sprintf(buf + len, "ReqIEs="); - for (i = 0; i < ifsta->assocreq_ies_len; i++) { - len += sprintf(buf + len, "%02x", - ifsta->assocreq_ies[i]); - } - } - if (ifsta->assocresp_ies) { - if (ifsta->assocreq_ies) - len += sprintf(buf + len, " "); - len += sprintf(buf + len, "RespIEs="); - for (i = 0; i < ifsta->assocresp_ies_len; i++) { - len += sprintf(buf + len, "%02x", - ifsta->assocresp_ies[i]); - } - } - len += sprintf(buf + len, ")"); - - if (len > IW_CUSTOM_MAX) { - len = sprintf(buf, "ASSOCRESPIE="); - for (i = 0; i < ifsta->assocresp_ies_len; i++) { - len += sprintf(buf + len, "%02x", - ifsta->assocresp_ies[i]); - } - } - - memset(&wrqu, 0, sizeof(wrqu)); - wrqu.data.length = len; - wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); - - kfree(buf); -} - - -static void ieee80211_set_associated(struct net_device *dev, - struct ieee80211_if_sta *ifsta, int assoc) -{ - union iwreq_data wrqu; - - if (ifsta->associated == assoc) - return; - - ifsta->associated = assoc; - - if (assoc) { - struct ieee80211_sub_if_data *sdata; - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - if (sdata->type != IEEE80211_IF_TYPE_STA) - return; - ifsta->prev_bssid_set = 1; - memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); - memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); - ieee80211_sta_send_associnfo(dev, ifsta); - } else { - memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); - } - wrqu.ap_addr.sa_family = ARPHRD_ETHER; - wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); - ifsta->last_probe = jiffies; -} - -static void ieee80211_set_disassoc(struct net_device *dev, - struct ieee80211_if_sta *ifsta, int deauth) -{ - if (deauth) - ifsta->auth_tries = 0; - ifsta->assoc_tries = 0; - ieee80211_set_associated(dev, ifsta, 0); -} - -static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, - int encrypt) -{ - struct ieee80211_sub_if_data *sdata; - struct ieee80211_tx_packet_data *pkt_data; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - skb->dev = sdata->local->mdev; - skb->mac.raw = skb->nh.raw = skb->h.raw = skb->data; - - pkt_data = (struct ieee80211_tx_packet_data *) skb->cb; - memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data)); - pkt_data->ifindex = sdata->dev->ifindex; - pkt_data->mgmt_iface = (sdata->type == IEEE80211_IF_TYPE_MGMT); - pkt_data->do_not_encrypt = !encrypt; - - dev_queue_xmit(skb); -} - - -static void ieee80211_send_auth(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - int transaction, u8 *extra, size_t extra_len, - int encrypt) -{ - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - - skb = dev_alloc_skb(sizeof(*mgmt) + 6 + extra_len); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for auth " - "frame\n", dev->name); - return; - } - - mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); - memset(mgmt, 0, 24 + 6); - mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_AUTH); - if (encrypt) - mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); - memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); - memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); - mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); - mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); - ifsta->auth_transaction = transaction + 1; - mgmt->u.auth.status_code = cpu_to_le16(0); - if (extra) - memcpy(skb_put(skb, extra_len), extra, extra_len); - - ieee80211_sta_tx(dev, skb, encrypt); -} - - -static void ieee80211_authenticate(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - ifsta->auth_tries++; - if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { - printk(KERN_DEBUG "%s: authentication with AP " MAC_FMT - " timed out\n", - dev->name, MAC_ARG(ifsta->bssid)); - return; - } - - ifsta->state = IEEE80211_AUTHENTICATE; - printk(KERN_DEBUG "%s: authenticate with AP " MAC_FMT "\n", - dev->name, MAC_ARG(ifsta->bssid)); - - ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0); - - schedule_delayed_work(&ifsta->work, IEEE80211_AUTH_TIMEOUT); -} - - -static void ieee80211_send_assoc(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - u8 *pos, *ies; - int i, len; - u16 capab; - struct ieee80211_sta_bss *bss; - int wmm = 0; - - skb = dev_alloc_skb(sizeof(*mgmt) + 200 + ifsta->extra_ie_len + - ifsta->ssid_len); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " - "frame\n", dev->name); - return; - } - - capab = ifsta->capab; - if (local->hw.conf.phymode == MODE_IEEE80211G) { - capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME | - WLAN_CAPABILITY_SHORT_PREAMBLE; - } - bss = ieee80211_rx_bss_get(dev, ifsta->bssid); - if (bss) { - if (bss->capability & WLAN_CAPABILITY_PRIVACY) - capab |= WLAN_CAPABILITY_PRIVACY; - if (bss->wmm_ie) { - wmm = 1; - } - ieee80211_rx_bss_put(dev, bss); - } - - mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); - memset(mgmt, 0, 24); - memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); - memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); - - if (ifsta->prev_bssid_set) { - skb_put(skb, 10); - mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_REASSOC_REQ); - mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); - mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1); - memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, - ETH_ALEN); - } else { - skb_put(skb, 4); - mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_ASSOC_REQ); - mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); - mgmt->u.assoc_req.listen_interval = cpu_to_le16(1); - } - - /* SSID */ - ies = pos = skb_put(skb, 2 + ifsta->ssid_len); - *pos++ = WLAN_EID_SSID; - *pos++ = ifsta->ssid_len; - memcpy(pos, ifsta->ssid, ifsta->ssid_len); - - len = local->num_curr_rates; - if (len > 8) - len = 8; - pos = skb_put(skb, len + 2); - *pos++ = WLAN_EID_SUPP_RATES; - *pos++ = len; - for (i = 0; i < len; i++) { - int rate = local->curr_rates[i].rate; - if (local->hw.conf.phymode == MODE_ATHEROS_TURBO) - rate /= 2; - *pos++ = (u8) (rate / 5); - } - - if (local->num_curr_rates > len) { - pos = skb_put(skb, local->num_curr_rates - len + 2); - *pos++ = WLAN_EID_EXT_SUPP_RATES; - *pos++ = local->num_curr_rates - len; - for (i = len; i < local->num_curr_rates; i++) { - int rate = local->curr_rates[i].rate; - if (local->hw.conf.phymode == MODE_ATHEROS_TURBO) - rate /= 2; - *pos++ = (u8) (rate / 5); - } - } - - if (ifsta->extra_ie) { - pos = skb_put(skb, ifsta->extra_ie_len); - memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); - } - - if (wmm && ifsta->wmm_enabled) { - pos = skb_put(skb, 9); - *pos++ = WLAN_EID_VENDOR_SPECIFIC; - *pos++ = 7; /* len */ - *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ - *pos++ = 0x50; - *pos++ = 0xf2; - *pos++ = 2; /* WME */ - *pos++ = 0; /* WME info */ - *pos++ = 1; /* WME ver */ - *pos++ = 0; - } - - kfree(ifsta->assocreq_ies); - ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; - ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_ATOMIC); - if (ifsta->assocreq_ies) - memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); - - ieee80211_sta_tx(dev, skb, 0); -} - - -static void ieee80211_send_deauth(struct net_device *dev, - struct ieee80211_if_sta *ifsta, u16 reason) -{ - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - - skb = dev_alloc_skb(sizeof(*mgmt)); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for deauth " - "frame\n", dev->name); - return; - } - - mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); - memset(mgmt, 0, 24); - memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); - memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); - mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_DEAUTH); - skb_put(skb, 2); - mgmt->u.deauth.reason_code = cpu_to_le16(reason); - - ieee80211_sta_tx(dev, skb, 0); -} - - -static void ieee80211_send_disassoc(struct net_device *dev, - struct ieee80211_if_sta *ifsta, u16 reason) -{ - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - - skb = dev_alloc_skb(sizeof(*mgmt)); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc " - "frame\n", dev->name); - return; - } - - mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); - memset(mgmt, 0, 24); - memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); - memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); - mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_DISASSOC); - skb_put(skb, 2); - mgmt->u.disassoc.reason_code = cpu_to_le16(reason); - - ieee80211_sta_tx(dev, skb, 0); -} - - -static int ieee80211_privacy_mismatch(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - struct ieee80211_sta_bss *bss; - int res = 0; - - if (!ifsta || ifsta->mixed_cell || - ifsta->key_mgmt != IEEE80211_KEY_MGMT_NONE) - return 0; - - bss = ieee80211_rx_bss_get(dev, ifsta->bssid); - if (!bss) - return 0; - - if (ieee80211_sta_wep_configured(dev) != - !!(bss->capability & WLAN_CAPABILITY_PRIVACY)) - res = 1; - - ieee80211_rx_bss_put(dev, bss); - - return res; -} - - -static void ieee80211_associate(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - ifsta->assoc_tries++; - if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { - printk(KERN_DEBUG "%s: association with AP " MAC_FMT - " timed out\n", - dev->name, MAC_ARG(ifsta->bssid)); - return; - } - - ifsta->state = IEEE80211_ASSOCIATE; - printk(KERN_DEBUG "%s: associate with AP " MAC_FMT "\n", - dev->name, MAC_ARG(ifsta->bssid)); - if (ieee80211_privacy_mismatch(dev, ifsta)) { - printk(KERN_DEBUG "%s: mismatch in privacy configuration and " - "mixed-cell disabled - abort association\n", dev->name); - return; - } - - ieee80211_send_assoc(dev, ifsta); - - schedule_delayed_work(&ifsta->work, IEEE80211_ASSOC_TIMEOUT); -} - - -static void ieee80211_associated(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct sta_info *sta; - int disassoc; - - /* TODO: start monitoring current AP signal quality and number of - * missed beacons. Scan other channels every now and then and search - * for better APs. */ - /* TODO: remove expired BSSes */ - - ifsta->state = IEEE80211_ASSOCIATED; - - sta = sta_info_get(local, ifsta->bssid); - if (!sta) { - printk(KERN_DEBUG "%s: No STA entry for own AP " MAC_FMT "\n", - dev->name, MAC_ARG(ifsta->bssid)); - disassoc = 1; - } else { - disassoc = 0; - if (time_after(jiffies, - sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { - if (ifsta->probereq_poll) { - printk(KERN_DEBUG "%s: No ProbeResp from " - "current AP " MAC_FMT " - assume out of " - "range\n", - dev->name, MAC_ARG(ifsta->bssid)); - disassoc = 1; - sta_info_free(sta, 0); - ifsta->probereq_poll = 0; - } else { - ieee80211_send_probe_req(dev, ifsta->bssid, - local->scan_ssid, - local->scan_ssid_len); - ifsta->probereq_poll = 1; - } - } else { - ifsta->probereq_poll = 0; - if (time_after(jiffies, ifsta->last_probe + - IEEE80211_PROBE_INTERVAL)) { - ifsta->last_probe = jiffies; - ieee80211_send_probe_req(dev, ifsta->bssid, - ifsta->ssid, - ifsta->ssid_len); - } - } - sta_info_put(sta); - } - if (disassoc) { - union iwreq_data wrqu; - memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); - wrqu.ap_addr.sa_family = ARPHRD_ETHER; - wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); - schedule_delayed_work(&ifsta->work, - IEEE80211_MONITORING_INTERVAL + 30 * HZ); - } else { - schedule_delayed_work(&ifsta->work, - IEEE80211_MONITORING_INTERVAL); - } -} - - -static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, - u8 *ssid, size_t ssid_len) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - u8 *pos, *supp_rates, *esupp_rates = NULL; - int i; - - skb = dev_alloc_skb(sizeof(*mgmt) + 200); - if (!skb) { - printk(KERN_DEBUG "%s: failed to allocate buffer for probe " - "request\n", dev->name); - return; - } - - mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); - memset(mgmt, 0, 24); - mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_PROBE_REQ); - memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); - if (dst) { - memcpy(mgmt->da, dst, ETH_ALEN); - memcpy(mgmt->bssid, dst, ETH_ALEN); - } else { - memset(mgmt->da, 0xff, ETH_ALEN); - memset(mgmt->bssid, 0xff, ETH_ALEN); - } - pos = skb_put(skb, 2 + ssid_len); - *pos++ = WLAN_EID_SSID; - *pos++ = ssid_len; - memcpy(pos, ssid, ssid_len); - - supp_rates = skb_put(skb, 2); - supp_rates[0] = WLAN_EID_SUPP_RATES; - supp_rates[1] = 0; - for (i = 0; i < local->num_curr_rates; i++) { - struct ieee80211_rate *rate = &local->curr_rates[i]; - if (!(rate->flags & IEEE80211_RATE_SUPPORTED)) - continue; - if (esupp_rates) { - pos = skb_put(skb, 1); - esupp_rates[1]++; - } else if (supp_rates[1] == 8) { - esupp_rates = skb_put(skb, 3); - esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; - esupp_rates[1] = 1; - pos = &esupp_rates[2]; - } else { - pos = skb_put(skb, 1); - supp_rates[1]++; - } - if (local->hw.conf.phymode == MODE_ATHEROS_TURBO) - *pos = rate->rate / 10; - else - *pos = rate->rate / 5; - } - - ieee80211_sta_tx(dev, skb, 0); -} - - -static int ieee80211_sta_wep_configured(struct net_device *dev) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - if (!sdata || !sdata->default_key || - sdata->default_key->alg != ALG_WEP) - return 0; - return 1; -} - - -static void ieee80211_auth_completed(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - printk(KERN_DEBUG "%s: authenticated\n", dev->name); - ifsta->authenticated = 1; - ieee80211_associate(dev, ifsta); -} - - -static void ieee80211_auth_challenge(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status) -{ - u8 *pos; - struct ieee802_11_elems elems; - - printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name); - pos = mgmt->u.auth.variable; - if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems) - == ParseFailed) { - printk(KERN_DEBUG "%s: failed to parse Auth(challenge)\n", - dev->name); - return; - } - if (!elems.challenge) { - printk(KERN_DEBUG "%s: no challenge IE in shared key auth " - "frame\n", dev->name); - return; - } - ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2, - elems.challenge_len + 2, 1); -} - - -static void ieee80211_rx_mgmt_auth(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - u16 auth_alg, auth_transaction, status_code; - - if (ifsta->state != IEEE80211_AUTHENTICATE && - sdata->type != IEEE80211_IF_TYPE_IBSS) { - printk(KERN_DEBUG "%s: authentication frame received from " - MAC_FMT ", but not in authenticate state - ignored\n", - dev->name, MAC_ARG(mgmt->sa)); - return; - } - - if (len < 24 + 6) { - printk(KERN_DEBUG "%s: too short (%zd) authentication frame " - "received from " MAC_FMT " - ignored\n", - dev->name, len, MAC_ARG(mgmt->sa)); - return; - } - - if (sdata->type != IEEE80211_IF_TYPE_IBSS && - memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { - printk(KERN_DEBUG "%s: authentication frame received from " - "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - " - "ignored\n", dev->name, MAC_ARG(mgmt->sa), - MAC_ARG(mgmt->bssid)); - return; - } - - if (sdata->type != IEEE80211_IF_TYPE_IBSS && - memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) { - printk(KERN_DEBUG "%s: authentication frame received from " - "unknown BSSID (SA=" MAC_FMT " BSSID=" MAC_FMT ") - " - "ignored\n", dev->name, MAC_ARG(mgmt->sa), - MAC_ARG(mgmt->bssid)); - return; - } - - auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); - auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); - status_code = le16_to_cpu(mgmt->u.auth.status_code); - - printk(KERN_DEBUG "%s: RX authentication from " MAC_FMT " (alg=%d " - "transaction=%d status=%d)\n", - dev->name, MAC_ARG(mgmt->sa), auth_alg, - auth_transaction, status_code); - - if (sdata->type == IEEE80211_IF_TYPE_IBSS) { - /* IEEE 802.11 standard does not require authentication in IBSS - * networks and most implementations do not seem to use it. - * However, try to reply to authentication attempts if someone - * has actually implemented this. - * TODO: Could implement shared key authentication. */ - if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) { - printk(KERN_DEBUG "%s: unexpected IBSS authentication " - "frame (alg=%d transaction=%d)\n", - dev->name, auth_alg, auth_transaction); - return; - } - ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0); - } - - if (auth_alg != ifsta->auth_alg || - auth_transaction != ifsta->auth_transaction) { - printk(KERN_DEBUG "%s: unexpected authentication frame " - "(alg=%d transaction=%d)\n", - dev->name, auth_alg, auth_transaction); - return; - } - - if (status_code != WLAN_STATUS_SUCCESS) { - printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d " - "code=%d)\n", dev->name, ifsta->auth_alg, status_code); - if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { - u8 algs[3]; - const int num_algs = ARRAY_SIZE(algs); - int i, pos; - algs[0] = algs[1] = algs[2] = 0xff; - if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) - algs[0] = WLAN_AUTH_OPEN; - if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) - algs[1] = WLAN_AUTH_SHARED_KEY; - if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) - algs[2] = WLAN_AUTH_LEAP; - if (ifsta->auth_alg == WLAN_AUTH_OPEN) - pos = 0; - else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) - pos = 1; - else - pos = 2; - for (i = 0; i < num_algs; i++) { - pos++; - if (pos >= num_algs) - pos = 0; - if (algs[pos] == ifsta->auth_alg || - algs[pos] == 0xff) - continue; - if (algs[pos] == WLAN_AUTH_SHARED_KEY && - !ieee80211_sta_wep_configured(dev)) - continue; - ifsta->auth_alg = algs[pos]; - printk(KERN_DEBUG "%s: set auth_alg=%d for " - "next try\n", - dev->name, ifsta->auth_alg); - break; - } - } - return; - } - - switch (ifsta->auth_alg) { - case WLAN_AUTH_OPEN: - case WLAN_AUTH_LEAP: - ieee80211_auth_completed(dev, ifsta); - break; - case WLAN_AUTH_SHARED_KEY: - if (ifsta->auth_transaction == 4) - ieee80211_auth_completed(dev, ifsta); - else - ieee80211_auth_challenge(dev, ifsta, mgmt, len, - rx_status); - break; - } -} - - -static void ieee80211_rx_mgmt_deauth(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status) -{ - u16 reason_code; - - if (len < 24 + 2) { - printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame " - "received from " MAC_FMT " - ignored\n", - dev->name, len, MAC_ARG(mgmt->sa)); - return; - } - - if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { - printk(KERN_DEBUG "%s: deauthentication frame received from " - "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - " - "ignored\n", dev->name, MAC_ARG(mgmt->sa), - MAC_ARG(mgmt->bssid)); - return; - } - - reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); - - printk(KERN_DEBUG "%s: RX deauthentication from " MAC_FMT - " (reason=%d)\n", - dev->name, MAC_ARG(mgmt->sa), reason_code); - - if (ifsta->authenticated) { - printk(KERN_DEBUG "%s: deauthenticated\n", dev->name); - } - - if (ifsta->state == IEEE80211_AUTHENTICATE || - ifsta->state == IEEE80211_ASSOCIATE || - ifsta->state == IEEE80211_ASSOCIATED) { - ifsta->state = IEEE80211_AUTHENTICATE; - schedule_delayed_work(&ifsta->work, - IEEE80211_RETRY_AUTH_INTERVAL); - } - - ieee80211_set_disassoc(dev, ifsta, 1); - ifsta->authenticated = 0; -} - - -static void ieee80211_rx_mgmt_disassoc(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status) -{ - u16 reason_code; - - if (len < 24 + 2) { - printk(KERN_DEBUG "%s: too short (%zd) disassociation frame " - "received from " MAC_FMT " - ignored\n", - dev->name, len, MAC_ARG(mgmt->sa)); - return; - } - - if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { - printk(KERN_DEBUG "%s: disassociation frame received from " - "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - " - "ignored\n", dev->name, MAC_ARG(mgmt->sa), - MAC_ARG(mgmt->bssid)); - return; - } - - reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); - - printk(KERN_DEBUG "%s: RX disassociation from " MAC_FMT - " (reason=%d)\n", - dev->name, MAC_ARG(mgmt->sa), reason_code); - - if (ifsta->associated) - printk(KERN_DEBUG "%s: disassociated\n", dev->name); - - if (ifsta->state == IEEE80211_ASSOCIATED) { - ifsta->state = IEEE80211_ASSOCIATE; - schedule_delayed_work(&ifsta->work, - IEEE80211_RETRY_AUTH_INTERVAL); - } - - ieee80211_set_disassoc(dev, ifsta, 0); -} - - -static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status, - int reassoc) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct sta_info *sta; - u32 rates; - u16 capab_info, status_code, aid; - struct ieee802_11_elems elems; - u8 *pos; - int i, j; - - /* AssocResp and ReassocResp have identical structure, so process both - * of them in this function. */ - - if (ifsta->state != IEEE80211_ASSOCIATE) { - printk(KERN_DEBUG "%s: association frame received from " - MAC_FMT ", but not in associate state - ignored\n", - dev->name, MAC_ARG(mgmt->sa)); - return; - } - - if (len < 24 + 6) { - printk(KERN_DEBUG "%s: too short (%zd) association frame " - "received from " MAC_FMT " - ignored\n", - dev->name, len, MAC_ARG(mgmt->sa)); - return; - } - - if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { - printk(KERN_DEBUG "%s: association frame received from " - "unknown AP (SA=" MAC_FMT " BSSID=" MAC_FMT ") - " - "ignored\n", dev->name, MAC_ARG(mgmt->sa), - MAC_ARG(mgmt->bssid)); - return; - } - - capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); - status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); - aid = le16_to_cpu(mgmt->u.assoc_resp.aid); - if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) - printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " - "set\n", dev->name, aid); - aid &= ~(BIT(15) | BIT(14)); - - printk(KERN_DEBUG "%s: RX %sssocResp from " MAC_FMT " (capab=0x%x " - "status=%d aid=%d)\n", - dev->name, reassoc ? "Rea" : "A", MAC_ARG(mgmt->sa), - capab_info, status_code, aid); - - if (status_code != WLAN_STATUS_SUCCESS) { - printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", - dev->name, status_code); - return; - } - - pos = mgmt->u.assoc_resp.variable; - if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems) - == ParseFailed) { - printk(KERN_DEBUG "%s: failed to parse AssocResp\n", - dev->name); - return; - } - - if (!elems.supp_rates) { - printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", - dev->name); - return; - } - - printk(KERN_DEBUG "%s: associated\n", dev->name); - ifsta->aid = aid; - ifsta->ap_capab = capab_info; - - kfree(ifsta->assocresp_ies); - ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); - ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_ATOMIC); - if (ifsta->assocresp_ies) - memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); - - ieee80211_set_associated(dev, ifsta, 1); - - /* Add STA entry for the AP */ - sta = sta_info_get(local, ifsta->bssid); - if (!sta) { - sta = sta_info_add(local, dev, ifsta->bssid, GFP_ATOMIC); - if (!sta) { - printk(KERN_DEBUG "%s: failed to add STA entry for the" - " AP\n", dev->name); - return; - } - } - - sta->dev = dev; - sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC; - sta->assoc_ap = 1; - - rates = 0; - for (i = 0; i < elems.supp_rates_len; i++) { - int rate = (elems.supp_rates[i] & 0x7f) * 5; - if (local->hw.conf.phymode == MODE_ATHEROS_TURBO) - rate *= 2; - for (j = 0; j < local->num_curr_rates; j++) - if (local->curr_rates[j].rate == rate) - rates |= BIT(j); - } - for (i = 0; i < elems.ext_supp_rates_len; i++) { - int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; - if (local->hw.conf.phymode == MODE_ATHEROS_TURBO) - rate *= 2; - for (j = 0; j < local->num_curr_rates; j++) - if (local->curr_rates[j].rate == rate) - rates |= BIT(j); - } - sta->supp_rates = rates; - - rate_control_rate_init(sta, local); - - if (elems.wmm_param && ifsta->wmm_enabled) { - sta->flags |= WLAN_STA_WME; - ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, - elems.wmm_param_len); - } - - - sta_info_put(sta); - - ieee80211_associated(dev, ifsta); -} - - -/* Caller must hold local->sta_bss_lock */ -static void __ieee80211_rx_bss_hash_add(struct net_device *dev, - struct ieee80211_sta_bss *bss) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)]; - local->sta_bss_hash[STA_HASH(bss->bssid)] = bss; -} - - -/* Caller must hold local->sta_bss_lock */ -static void __ieee80211_rx_bss_hash_del(struct net_device *dev, - struct ieee80211_sta_bss *bss) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_sta_bss *b, *prev = NULL; - b = local->sta_bss_hash[STA_HASH(bss->bssid)]; - while (b) { - if (b == bss) { - if (!prev) - local->sta_bss_hash[STA_HASH(bss->bssid)] = - bss->hnext; - else - prev->hnext = bss->hnext; - break; - } - prev = b; - b = b->hnext; - } -} - - -static struct ieee80211_sta_bss * -ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_sta_bss *bss; - - bss = kmalloc(sizeof(*bss), GFP_ATOMIC); - if (!bss) - return NULL; - memset(bss, 0, sizeof(*bss)); - atomic_inc(&bss->users); - atomic_inc(&bss->users); - memcpy(bss->bssid, bssid, ETH_ALEN); - - spin_lock_bh(&local->sta_bss_lock); - /* TODO: order by RSSI? */ - list_add_tail(&bss->list, &local->sta_bss_list); - __ieee80211_rx_bss_hash_add(dev, bss); - spin_unlock_bh(&local->sta_bss_lock); - return bss; -} - - -static struct ieee80211_sta_bss * -ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_sta_bss *bss; - - spin_lock_bh(&local->sta_bss_lock); - bss = local->sta_bss_hash[STA_HASH(bssid)]; - while (bss) { - if (memcmp(bss->bssid, bssid, ETH_ALEN) == 0) { - atomic_inc(&bss->users); - break; - } - bss = bss->hnext; - } - spin_unlock_bh(&local->sta_bss_lock); - return bss; -} - - -static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) -{ - kfree(bss->wpa_ie); - kfree(bss->rsn_ie); - kfree(bss->wmm_ie); - kfree(bss); -} - - -static void ieee80211_rx_bss_put(struct net_device *dev, - struct ieee80211_sta_bss *bss) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - if (!atomic_dec_and_test(&bss->users)) - return; - - spin_lock_bh(&local->sta_bss_lock); - __ieee80211_rx_bss_hash_del(dev, bss); - list_del(&bss->list); - spin_unlock_bh(&local->sta_bss_lock); - ieee80211_rx_bss_free(bss); -} - - -void ieee80211_rx_bss_list_init(struct net_device *dev) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - spin_lock_init(&local->sta_bss_lock); - INIT_LIST_HEAD(&local->sta_bss_list); -} - - -void ieee80211_rx_bss_list_deinit(struct net_device *dev) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_sta_bss *bss, *tmp; - - list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list) - ieee80211_rx_bss_put(dev, bss); -} - - -static void ieee80211_rx_bss_info(struct net_device *dev, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status, - int beacon) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee802_11_elems elems; - size_t baselen; - int channel, invalid = 0, clen; - struct ieee80211_sta_bss *bss; - struct sta_info *sta; - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - u64 timestamp; - - if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN)) - return; /* ignore ProbeResp to foreign address */ - -#if 0 - printk(KERN_DEBUG "%s: RX %s from " MAC_FMT " to " MAC_FMT "\n", - dev->name, beacon ? "Beacon" : "Probe Response", - MAC_ARG(mgmt->sa), MAC_ARG(mgmt->da)); -#endif - - baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; - if (baselen > len) - return; - - timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); - - if (sdata->type == IEEE80211_IF_TYPE_IBSS && beacon && - memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { -#ifdef CONFIG_D80211_IBSS_DEBUG - static unsigned long last_tsf_debug = 0; - u64 tsf; - if (local->ops->get_tsf) - tsf = local->ops->get_tsf(local_to_hw(local)); - else - tsf = -1LLU; - if (time_after(jiffies, last_tsf_debug + 5 * HZ)) { - printk(KERN_DEBUG "RX beacon SA=" MAC_FMT " BSSID=" - MAC_FMT " TSF=0x%llx BCN=0x%llx diff=%lld " - "@%lu\n", - MAC_ARG(mgmt->sa), MAC_ARG(mgmt->bssid), - (unsigned long long)tsf, - (unsigned long long)timestamp, - (unsigned long long)(tsf - timestamp), - jiffies); - last_tsf_debug = jiffies; - } -#endif /* CONFIG_D80211_IBSS_DEBUG */ - } - - if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, - &elems) == ParseFailed) - invalid = 1; - - if (sdata->type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates && - memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 && - (sta = sta_info_get(local, mgmt->sa))) { - struct ieee80211_hw_mode *mode; - struct ieee80211_rate *rates; - size_t num_rates; - u32 supp_rates, prev_rates; - int i, j, oper_mode; - - rates = local->curr_rates; - num_rates = local->num_curr_rates; - oper_mode = local->sta_scanning ? local->scan_oper_phymode : - local->hw.conf.phymode; - list_for_each_entry(mode, &local->modes_list, list) { - if (oper_mode == mode->mode) { - rates = mode->rates; - num_rates = mode->num_rates; - break; - } - } - - supp_rates = 0; - for (i = 0; i < elems.supp_rates_len + - elems.ext_supp_rates_len; i++) { - u8 rate = 0; - int own_rate; - if (i < elems.supp_rates_len) - rate = elems.supp_rates[i]; - else if (elems.ext_supp_rates) - rate = elems.ext_supp_rates - [i - elems.supp_rates_len]; - own_rate = 5 * (rate & 0x7f); - if (oper_mode == MODE_ATHEROS_TURBO) - own_rate *= 2; - for (j = 0; j < num_rates; j++) - if (rates[j].rate == own_rate) - supp_rates |= BIT(j); - } - - prev_rates = sta->supp_rates; - sta->supp_rates &= supp_rates; - if (sta->supp_rates == 0) { - /* No matching rates - this should not really happen. - * Make sure that at least one rate is marked - * supported to avoid issues with TX rate ctrl. */ - sta->supp_rates = sdata->u.sta.supp_rates_bits; - } - if (sta->supp_rates != prev_rates) { - printk(KERN_DEBUG "%s: updated supp_rates set for " - MAC_FMT " based on beacon info (0x%x & 0x%x -> " - "0x%x)\n", - dev->name, MAC_ARG(sta->addr), prev_rates, - supp_rates, sta->supp_rates); - } - sta_info_put(sta); - } - - if (!elems.ssid) - return; - - if (elems.ds_params && elems.ds_params_len == 1) - channel = elems.ds_params[0]; - else - channel = rx_status->channel; - - bss = ieee80211_rx_bss_get(dev, mgmt->bssid); - if (!bss) { - bss = ieee80211_rx_bss_add(dev, mgmt->bssid); - if (!bss) - return; - } else { -#if 0 - /* TODO: order by RSSI? */ - spin_lock_bh(&local->sta_bss_lock); - list_move_tail(&bss->list, &local->sta_bss_list); - spin_unlock_bh(&local->sta_bss_lock); -#endif - } - - if (bss->probe_resp && beacon) { - /* Do not allow beacon to override data from Probe Response. */ - ieee80211_rx_bss_put(dev, bss); - return; - } - - bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); - bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); - if (elems.ssid && elems.ssid_len <= IEEE80211_MAX_SSID_LEN) { - memcpy(bss->ssid, elems.ssid, elems.ssid_len); - bss->ssid_len = elems.ssid_len; - } - - bss->supp_rates_len = 0; - if (elems.supp_rates) { - clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; - if (clen > elems.supp_rates_len) - clen = elems.supp_rates_len; - memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates, - clen); - bss->supp_rates_len += clen; - } - if (elems.ext_supp_rates) { - clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; - if (clen > elems.ext_supp_rates_len) - clen = elems.ext_supp_rates_len; - memcpy(&bss->supp_rates[bss->supp_rates_len], - elems.ext_supp_rates, clen); - bss->supp_rates_len += clen; - } - - if (elems.wpa && - (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len || - memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) { - kfree(bss->wpa_ie); - bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC); - if (bss->wpa_ie) { - memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2); - bss->wpa_ie_len = elems.wpa_len + 2; - } else - bss->wpa_ie_len = 0; - } else if (!elems.wpa && bss->wpa_ie) { - kfree(bss->wpa_ie); - bss->wpa_ie = NULL; - bss->wpa_ie_len = 0; - } - - if (elems.rsn && - (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len || - memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) { - kfree(bss->rsn_ie); - bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC); - if (bss->rsn_ie) { - memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2); - bss->rsn_ie_len = elems.rsn_len + 2; - } else - bss->rsn_ie_len = 0; - } else if (!elems.rsn && bss->rsn_ie) { - kfree(bss->rsn_ie); - bss->rsn_ie = NULL; - bss->rsn_ie_len = 0; - } - - if (elems.wmm_param && - (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len || - memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) { - kfree(bss->wmm_ie); - bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC); - if (bss->wmm_ie) { - memcpy(bss->wmm_ie, elems.wmm_param - 2, - elems.wmm_param_len + 2); - bss->wmm_ie_len = elems.wmm_param_len + 2; - } else - bss->wmm_ie_len = 0; - } else if (!elems.wmm_param && bss->wmm_ie) { - kfree(bss->wmm_ie); - bss->wmm_ie = NULL; - bss->wmm_ie_len = 0; - } - - - bss->hw_mode = rx_status->phymode; - bss->channel = channel; - bss->freq = rx_status->freq; - if (channel != rx_status->channel && - (bss->hw_mode == MODE_IEEE80211G || - bss->hw_mode == MODE_IEEE80211B) && - channel >= 1 && channel <= 14) { - static const int freq_list[] = { - 2412, 2417, 2422, 2427, 2432, 2437, 2442, - 2447, 2452, 2457, 2462, 2467, 2472, 2484 - }; - /* IEEE 802.11g/b mode can receive packets from neighboring - * channels, so map the channel into frequency. */ - bss->freq = freq_list[channel - 1]; - } - bss->timestamp = timestamp; - bss->last_update = jiffies; - bss->rssi = rx_status->ssi; - if (!beacon) - bss->probe_resp++; - ieee80211_rx_bss_put(dev, bss); -} - - -static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status) -{ - ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0); -} - - -static void ieee80211_rx_mgmt_beacon(struct net_device *dev, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_sub_if_data *sdata; - struct ieee80211_if_sta *ifsta; - int use_protection; - size_t baselen; - struct ieee802_11_elems elems; - - ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1); - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - if (sdata->type != IEEE80211_IF_TYPE_STA) - return; - ifsta = &sdata->u.sta; - - if (!ifsta->associated || - memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) - return; - - /* Process beacon from the current BSS */ - baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; - if (baselen > len) - return; - - if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, - &elems) == ParseFailed) - return; - - use_protection = 0; - if (elems.erp_info && elems.erp_info_len >= 1) { - use_protection = - (elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0; - } - - if (use_protection != !!ifsta->use_protection) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" - MAC_FMT ")\n", - dev->name, - use_protection ? "enabled" : "disabled", - MAC_ARG(ifsta->bssid)); - } - ifsta->use_protection = use_protection ? 1 : 0; - local->cts_protect_erp_frames = use_protection; - } - - if (elems.wmm_param && ifsta->wmm_enabled) { - ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, - elems.wmm_param_len); - } -} - - -static void ieee80211_rx_mgmt_probe_req(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - struct ieee80211_mgmt *mgmt, - size_t len, - struct ieee80211_rx_status *rx_status) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - int tx_last_beacon; - struct sk_buff *skb; - struct ieee80211_mgmt *resp; - u8 *pos, *end; - - if (sdata->type != IEEE80211_IF_TYPE_IBSS || - ifsta->state != IEEE80211_IBSS_JOINED || - len < 24 + 2 || !ifsta->probe_resp) - return; - - if (local->ops->tx_last_beacon) - tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); - else - tx_last_beacon = 1; - -#ifdef CONFIG_D80211_IBSS_DEBUG - printk(KERN_DEBUG "%s: RX ProbeReq SA=" MAC_FMT " DA=" MAC_FMT " BSSID=" - MAC_FMT " (tx_last_beacon=%d)\n", - dev->name, MAC_ARG(mgmt->sa), MAC_ARG(mgmt->da), - MAC_ARG(mgmt->bssid), tx_last_beacon); -#endif /* CONFIG_D80211_IBSS_DEBUG */ - - if (!tx_last_beacon) - return; - - if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && - memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) - return; - - end = ((u8 *) mgmt) + len; - pos = mgmt->u.probe_req.variable; - if (pos[0] != WLAN_EID_SSID || - pos + 2 + pos[1] > end) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " - "from " MAC_FMT "\n", - dev->name, MAC_ARG(mgmt->sa)); - } - return; - } - if (pos[1] != 0 && - (pos[1] != ifsta->ssid_len || - memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { - /* Ignore ProbeReq for foreign SSID */ - return; - } - - /* Reply with ProbeResp */ - skb = skb_copy(ifsta->probe_resp, GFP_ATOMIC); - if (!skb) - return; - - resp = (struct ieee80211_mgmt *) skb->data; - memcpy(resp->da, mgmt->sa, ETH_ALEN); -#ifdef CONFIG_D80211_IBSS_DEBUG - printk(KERN_DEBUG "%s: Sending ProbeResp to " MAC_FMT "\n", - dev->name, MAC_ARG(resp->da)); -#endif /* CONFIG_D80211_IBSS_DEBUG */ - ieee80211_sta_tx(dev, skb, 0); -} - - -void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, - struct ieee80211_rx_status *rx_status) -{ - struct ieee80211_sub_if_data *sdata; - struct ieee80211_if_sta *ifsta; - struct ieee80211_mgmt *mgmt; - u16 fc; - - if (skb->len < 24) - goto fail; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - ifsta = &sdata->u.sta; - - mgmt = (struct ieee80211_mgmt *) skb->data; - fc = le16_to_cpu(mgmt->frame_control); - - switch (fc & IEEE80211_FCTL_STYPE) { - case IEEE80211_STYPE_PROBE_REQ: - ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len, - rx_status); - break; - case IEEE80211_STYPE_PROBE_RESP: - ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); - break; - case IEEE80211_STYPE_BEACON: - ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); - break; - case IEEE80211_STYPE_AUTH: - ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len, rx_status); - break; - case IEEE80211_STYPE_ASSOC_RESP: - ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, - rx_status, 0); - break; - case IEEE80211_STYPE_REASSOC_RESP: - ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, - rx_status, 1); - break; - case IEEE80211_STYPE_DEAUTH: - ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len, - rx_status); - break; - case IEEE80211_STYPE_DISASSOC: - ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len, - rx_status); - break; - default: - printk(KERN_DEBUG "%s: received unknown management frame - " - "stype=%d\n", dev->name, - (fc & IEEE80211_FCTL_STYPE) >> 4); - break; - } - - fail: - dev_kfree_skb(skb); -} - - -void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, - struct ieee80211_rx_status *rx_status) -{ - struct ieee80211_mgmt *mgmt; - u16 fc; - - if (skb->len < 24) { - dev_kfree_skb(skb); - return; - } - - mgmt = (struct ieee80211_mgmt *) skb->data; - fc = le16_to_cpu(mgmt->frame_control); - - if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { - if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) { - ieee80211_rx_mgmt_probe_resp(dev, mgmt, - skb->len, rx_status); - } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) { - ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, - rx_status); - } - } - - dev_kfree_skb(skb); -} - - -static int ieee80211_sta_active_ibss(struct net_device *dev) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - int active = 0; - struct sta_info *sta; - - spin_lock_bh(&local->sta_lock); - list_for_each_entry(sta, &local->sta_list, list) { - if (sta->dev == dev && - time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, - jiffies)) { - active++; - break; - } - } - spin_unlock_bh(&local->sta_lock); - - return active; -} - - -static void ieee80211_sta_expire(struct net_device *dev) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct sta_info *sta, *tmp; - - spin_lock_bh(&local->sta_lock); - list_for_each_entry_safe(sta, tmp, &local->sta_list, list) - if (time_after(jiffies, sta->last_rx + - IEEE80211_IBSS_INACTIVITY_LIMIT)) { - printk(KERN_DEBUG "%s: expiring inactive STA " MAC_FMT - "\n", dev->name, MAC_ARG(sta->addr)); - sta_info_free(sta, 1); - } - spin_unlock_bh(&local->sta_lock); -} - - -static void ieee80211_sta_merge_ibss(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - schedule_delayed_work(&ifsta->work, IEEE80211_IBSS_MERGE_INTERVAL); - - ieee80211_sta_expire(dev); - if (ieee80211_sta_active_ibss(dev)) - return; - - printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " - "IBSS networks with same SSID (merge)\n", dev->name); - ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len); -} - - -void ieee80211_sta_work(struct work_struct *work) -{ - struct ieee80211_sub_if_data *sdata = - container_of(work, struct ieee80211_sub_if_data, u.sta.work.work); - struct net_device *dev = sdata->dev; - struct ieee80211_if_sta *ifsta; - - if (!netif_running(dev)) - return; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - if (sdata->type != IEEE80211_IF_TYPE_STA && - sdata->type != IEEE80211_IF_TYPE_IBSS) { - printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface " - "(type=%d)\n", dev->name, sdata->type); - return; - } - ifsta = &sdata->u.sta; - - switch (ifsta->state) { - case IEEE80211_DISABLED: - break; - case IEEE80211_AUTHENTICATE: - ieee80211_authenticate(dev, ifsta); - break; - case IEEE80211_ASSOCIATE: - ieee80211_associate(dev, ifsta); - break; - case IEEE80211_ASSOCIATED: - ieee80211_associated(dev, ifsta); - break; - case IEEE80211_IBSS_SEARCH: - ieee80211_sta_find_ibss(dev, ifsta); - break; - case IEEE80211_IBSS_JOINED: - ieee80211_sta_merge_ibss(dev, ifsta); - break; - default: - printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n", - ifsta->state); - break; - } - - if (ieee80211_privacy_mismatch(dev, ifsta)) { - printk(KERN_DEBUG "%s: privacy configuration mismatch and " - "mixed-cell disabled - disassociate\n", dev->name); - - ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED); - ieee80211_set_disassoc(dev, ifsta, 0); - } -} - - -static void ieee80211_sta_new_auth(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - if (sdata->type != IEEE80211_IF_TYPE_STA) - return; - - if (local->ops->reset_tsf) { - /* Reset own TSF to allow time synchronization work. */ - local->ops->reset_tsf(local_to_hw(local)); - } - - ifsta->wmm_last_param_set = -1; /* allow any WMM update */ - - - if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) - ifsta->auth_alg = WLAN_AUTH_OPEN; - else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) - ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; - else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) - ifsta->auth_alg = WLAN_AUTH_LEAP; - else - ifsta->auth_alg = WLAN_AUTH_OPEN; - printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name, - ifsta->auth_alg); - ifsta->auth_transaction = -1; - ifsta->associated = ifsta->auth_tries = ifsta->assoc_tries = 0; - ieee80211_authenticate(dev, ifsta); -} - - -static int ieee80211_ibss_allowed(struct ieee80211_local *local) -{ - struct ieee80211_hw_mode *mode; - int c; - - list_for_each_entry(mode, &local->modes_list, list) { - if (mode->mode != local->hw.conf.phymode) - continue; - for (c = 0; c < mode->num_channels; c++) { - struct ieee80211_channel *chan = &mode->channels[c]; - if (chan->flag & IEEE80211_CHAN_W_SCAN && - chan->chan == local->hw.conf.channel) { - if (chan->flag & IEEE80211_CHAN_W_IBSS) - return 1; - break; - } - } - } - - return 0; -} - - -extern int ieee80211_ioctl_siwfreq(struct net_device *dev, - struct iw_request_info *info, - struct iw_freq *freq, char *extra); - -static int ieee80211_sta_join_ibss(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - struct ieee80211_sta_bss *bss) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct iw_freq rq; - int res, rates, i, j; - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - struct ieee80211_tx_control control; - struct ieee80211_rate *rate; - struct rate_control_extra extra; - u8 *pos; - struct ieee80211_sub_if_data *sdata; - - /* Remove possible STA entries from other IBSS networks. */ - sta_info_flush(local, NULL); - - if (local->ops->reset_tsf) { - /* Reset own TSF to allow time synchronization work. */ - local->ops->reset_tsf(local_to_hw(local)); - } - memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); - res = ieee80211_if_config(dev); - if (res) - return res; - - local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - sdata->drop_unencrypted = bss->capability & - WLAN_CAPABILITY_PRIVACY ? 1 : 0; - - memset(&rq, 0, sizeof(rq)); - rq.m = bss->freq * 100000; - rq.e = 1; - res = ieee80211_ioctl_siwfreq(dev, NULL, &rq, NULL); - - if (!ieee80211_ibss_allowed(local)) { - printk(KERN_DEBUG "%s: IBSS not allowed on channel %d " - "(%d MHz)\n", dev->name, local->hw.conf.channel, - local->hw.conf.freq); - return -1; - } - - /* Set beacon template based on scan results */ - skb = dev_alloc_skb(400); - do { - if (!skb) - break; - - mgmt = (struct ieee80211_mgmt *) - skb_put(skb, 24 + sizeof(mgmt->u.beacon)); - memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); - mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_BEACON); - memset(mgmt->da, 0xff, ETH_ALEN); - memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); - mgmt->u.beacon.beacon_int = - cpu_to_le16(local->hw.conf.beacon_int); - mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); - - pos = skb_put(skb, 2 + ifsta->ssid_len); - *pos++ = WLAN_EID_SSID; - *pos++ = ifsta->ssid_len; - memcpy(pos, ifsta->ssid, ifsta->ssid_len); - - rates = bss->supp_rates_len; - if (rates > 8) - rates = 8; - pos = skb_put(skb, 2 + rates); - *pos++ = WLAN_EID_SUPP_RATES; - *pos++ = rates; - memcpy(pos, bss->supp_rates, rates); - - pos = skb_put(skb, 2 + 1); - *pos++ = WLAN_EID_DS_PARAMS; - *pos++ = 1; - *pos++ = bss->channel; - - pos = skb_put(skb, 2 + 2); - *pos++ = WLAN_EID_IBSS_PARAMS; - *pos++ = 2; - /* FIX: set ATIM window based on scan results */ - *pos++ = 0; - *pos++ = 0; - - if (bss->supp_rates_len > 8) { - rates = bss->supp_rates_len - 8; - pos = skb_put(skb, 2 + rates); - *pos++ = WLAN_EID_EXT_SUPP_RATES; - *pos++ = rates; - memcpy(pos, &bss->supp_rates[8], rates); - } - - memset(&control, 0, sizeof(control)); - memset(&extra, 0, sizeof(extra)); - extra.endidx = local->num_curr_rates; - rate = rate_control_get_rate(local, dev, skb, &extra); - if (!rate) { - printk(KERN_DEBUG "%s: Failed to determine TX rate " - "for IBSS beacon\n", dev->name); - break; - } - control.tx_rate = (local->short_preamble && - (rate->flags & IEEE80211_RATE_PREAMBLE2)) ? - rate->val2 : rate->val; - control.antenna_sel = local->hw.conf.antenna_sel; - control.power_level = local->hw.conf.power_level; - control.flags |= IEEE80211_TXCTL_NO_ACK; - control.retry_limit = 1; - control.rts_cts_duration = 0; - - ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC); - if (ifsta->probe_resp) { - mgmt = (struct ieee80211_mgmt *) - ifsta->probe_resp->data; - mgmt->frame_control = - IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_PROBE_RESP); - } else { - printk(KERN_DEBUG "%s: Could not allocate ProbeResp " - "template for IBSS\n", dev->name); - } - - if (local->ops->beacon_update && - local->ops->beacon_update(local_to_hw(local), - skb, &control) == 0) { - printk(KERN_DEBUG "%s: Configured IBSS beacon " - "template based on scan results\n", dev->name); - skb = NULL; - } - - rates = 0; - for (i = 0; i < bss->supp_rates_len; i++) { - int rate = (bss->supp_rates[i] & 0x7f) * 5; - if (local->hw.conf.phymode == MODE_ATHEROS_TURBO) - rate *= 2; - for (j = 0; j < local->num_curr_rates; j++) - if (local->curr_rates[j].rate == rate) - rates |= BIT(j); - } - ifsta->supp_rates_bits = rates; - } while (0); - - if (skb) { - printk(KERN_DEBUG "%s: Failed to configure IBSS beacon " - "template\n", dev->name); - dev_kfree_skb(skb); - } - - ifsta->state = IEEE80211_IBSS_JOINED; - schedule_delayed_work(&ifsta->work, IEEE80211_IBSS_MERGE_INTERVAL); - - ieee80211_rx_bss_put(dev, bss); - - return res; -} - - -static int ieee80211_sta_create_ibss(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_sta_bss *bss; - struct ieee80211_sub_if_data *sdata; - u8 bssid[ETH_ALEN], *pos; - int i; - -#if 0 - /* Easier testing, use fixed BSSID. */ - memset(bssid, 0xfe, ETH_ALEN); -#else - /* Generate random, not broadcast, locally administered BSSID. Mix in - * own MAC address to make sure that devices that do not have proper - * random number generator get different BSSID. */ - get_random_bytes(bssid, ETH_ALEN); - for (i = 0; i < ETH_ALEN; i++) - bssid[i] ^= dev->dev_addr[i]; - bssid[0] &= ~0x01; - bssid[0] |= 0x02; -#endif - - printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID " MAC_FMT "\n", - dev->name, MAC_ARG(bssid)); - - bss = ieee80211_rx_bss_add(dev, bssid); - if (!bss) - return -ENOMEM; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - if (local->hw.conf.beacon_int == 0) - local->hw.conf.beacon_int = 100; - bss->beacon_int = local->hw.conf.beacon_int; - bss->hw_mode = local->hw.conf.phymode; - bss->channel = local->hw.conf.channel; - bss->freq = local->hw.conf.freq; - bss->last_update = jiffies; - bss->capability = WLAN_CAPABILITY_IBSS; - if (sdata->default_key) { - bss->capability |= WLAN_CAPABILITY_PRIVACY; - } else - sdata->drop_unencrypted = 0; - bss->supp_rates_len = local->num_curr_rates; - pos = bss->supp_rates; - for (i = 0; i < local->num_curr_rates; i++) { - int rate = local->curr_rates[i].rate; - if (local->hw.conf.phymode == MODE_ATHEROS_TURBO) - rate /= 2; - *pos++ = (u8) (rate / 5); - } - - return ieee80211_sta_join_ibss(dev, ifsta, bss); -} - - -static int ieee80211_sta_find_ibss(struct net_device *dev, - struct ieee80211_if_sta *ifsta) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct ieee80211_sta_bss *bss; - int found = 0; - u8 bssid[ETH_ALEN]; - int active_ibss; - - if (ifsta->ssid_len == 0) - return -EINVAL; - - active_ibss = ieee80211_sta_active_ibss(dev); -#ifdef CONFIG_D80211_IBSS_DEBUG - printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", - dev->name, active_ibss); -#endif /* CONFIG_D80211_IBSS_DEBUG */ - spin_lock_bh(&local->sta_bss_lock); - list_for_each_entry(bss, &local->sta_bss_list, list) { - if (ifsta->ssid_len != bss->ssid_len || - memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 - || !(bss->capability & WLAN_CAPABILITY_IBSS)) - continue; -#ifdef CONFIG_D80211_IBSS_DEBUG - printk(KERN_DEBUG " bssid=" MAC_FMT " found\n", - MAC_ARG(bss->bssid)); -#endif /* CONFIG_D80211_IBSS_DEBUG */ - memcpy(bssid, bss->bssid, ETH_ALEN); - found = 1; - if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) - break; - } - spin_unlock_bh(&local->sta_bss_lock); - -#ifdef CONFIG_D80211_IBSS_DEBUG - printk(KERN_DEBUG " sta_find_ibss: selected " MAC_FMT " current " - MAC_FMT "\n", MAC_ARG(bssid), MAC_ARG(ifsta->bssid)); -#endif /* CONFIG_D80211_IBSS_DEBUG */ - if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 && - (bss = ieee80211_rx_bss_get(dev, bssid))) { - printk(KERN_DEBUG "%s: Selected IBSS BSSID " MAC_FMT - " based on configured SSID\n", - dev->name, MAC_ARG(bssid)); - return ieee80211_sta_join_ibss(dev, ifsta, bss); - } -#ifdef CONFIG_D80211_IBSS_DEBUG - printk(KERN_DEBUG " did not try to join ibss\n"); -#endif /* CONFIG_D80211_IBSS_DEBUG */ - - /* Selected IBSS not found in current scan results - try to scan */ - if (ifsta->state == IEEE80211_IBSS_JOINED && - !ieee80211_sta_active_ibss(dev)) { - schedule_delayed_work(&ifsta->work, - IEEE80211_IBSS_MERGE_INTERVAL); - } else if (time_after(jiffies, local->last_scan_completed + - IEEE80211_SCAN_INTERVAL)) { - printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " - "join\n", dev->name); - return ieee80211_sta_req_scan(dev, ifsta->ssid, - ifsta->ssid_len); - } else if (ifsta->state != IEEE80211_IBSS_JOINED) { - int interval = IEEE80211_SCAN_INTERVAL; - - if (time_after(jiffies, ifsta->ibss_join_req + - IEEE80211_IBSS_JOIN_TIMEOUT)) { - if (ifsta->create_ibss && - ieee80211_ibss_allowed(local)) - return ieee80211_sta_create_ibss(dev, ifsta); - if (ifsta->create_ibss) { - printk(KERN_DEBUG "%s: IBSS not allowed on the" - " configured channel %d (%d MHz)\n", - dev->name, local->hw.conf.channel, - local->hw.conf.freq); - } - - /* No IBSS found - decrease scan interval and continue - * scanning. */ - interval = IEEE80211_SCAN_INTERVAL_SLOW; - } - - ifsta->state = IEEE80211_IBSS_SEARCH; - schedule_delayed_work(&ifsta->work, interval); - return 0; - } - - return 0; -} - - -int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len) -{ - struct ieee80211_sub_if_data *sdata; - struct ieee80211_if_sta *ifsta; - struct ieee80211_local *local = dev->ieee80211_ptr; - - if (len > IEEE80211_MAX_SSID_LEN) - return -EINVAL; - - /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is - * not defined. */ - if (local->ops->conf_tx) { - struct ieee80211_tx_queue_params qparam; - int i; - - memset(&qparam, 0, sizeof(qparam)); - /* TODO: are these ok defaults for all hw_modes? */ - qparam.aifs = 2; - qparam.cw_min = - local->hw.conf.phymode == MODE_IEEE80211B ? 31 : 15; - qparam.cw_max = 1023; - qparam.burst_time = 0; - for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++) - { - local->ops->conf_tx(local_to_hw(local), - i + IEEE80211_TX_QUEUE_DATA0, - &qparam); - } - /* IBSS uses different parameters for Beacon sending */ - qparam.cw_min++; - qparam.cw_min *= 2; - qparam.cw_min--; - local->ops->conf_tx(local_to_hw(local), - IEEE80211_TX_QUEUE_BEACON, &qparam); - } - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - ifsta = &sdata->u.sta; - - if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) - ifsta->prev_bssid_set = 0; - memcpy(ifsta->ssid, ssid, len); - memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len); - ifsta->ssid_len = len; - - ifsta->ssid_set = 1; - if (sdata->type == IEEE80211_IF_TYPE_IBSS && !ifsta->bssid_set) { - ifsta->ibss_join_req = jiffies; - ifsta->state = IEEE80211_IBSS_SEARCH; - return ieee80211_sta_find_ibss(dev, ifsta); - } - - if (ifsta->bssid_set && ifsta->state != IEEE80211_AUTHENTICATE) - ieee80211_sta_new_auth(dev, ifsta); - - return 0; -} - - -int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_if_sta *ifsta = &sdata->u.sta; - memcpy(ssid, ifsta->ssid, ifsta->ssid_len); - *len = ifsta->ssid_len; - return 0; -} - - -int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid) -{ - struct ieee80211_sub_if_data *sdata; - struct ieee80211_if_sta *ifsta; - int res; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - ifsta = &sdata->u.sta; - - if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { - memcpy(ifsta->bssid, bssid, ETH_ALEN); - res = ieee80211_if_config(dev); - if (res) { - printk(KERN_DEBUG "%s: Failed to config new BSSID to " - "the low-level driver\n", dev->name); - return res; - } - } - - if (memcmp(bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0) - ifsta->bssid_set = 0; - else - ifsta->bssid_set = 1; - if (ifsta->ssid_set && ifsta->state != IEEE80211_AUTHENTICATE) - ieee80211_sta_new_auth(dev, ifsta); - - return 0; -} - - -static void ieee80211_sta_save_oper_chan(struct net_device *dev) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - local->scan_oper_channel = local->hw.conf.channel; - local->scan_oper_channel_val = local->hw.conf.channel_val; - local->scan_oper_power_level = local->hw.conf.power_level; - local->scan_oper_freq = local->hw.conf.freq; - local->scan_oper_phymode = local->hw.conf.phymode; - local->scan_oper_antenna_max = local->hw.conf.antenna_max; -} - - -static int ieee80211_sta_restore_oper_chan(struct net_device *dev) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - local->hw.conf.channel = local->scan_oper_channel; - local->hw.conf.channel_val = local->scan_oper_channel_val; - local->hw.conf.power_level = local->scan_oper_power_level; - local->hw.conf.freq = local->scan_oper_freq; - local->hw.conf.phymode = local->scan_oper_phymode; - local->hw.conf.antenna_max = local->scan_oper_antenna_max; - return ieee80211_hw_config(local); -} - - -static int ieee80211_active_scan(struct ieee80211_local *local) -{ - struct ieee80211_hw_mode *mode; - int c; - - list_for_each_entry(mode, &local->modes_list, list) { - if (mode->mode != local->hw.conf.phymode) - continue; - for (c = 0; c < mode->num_channels; c++) { - struct ieee80211_channel *chan = &mode->channels[c]; - if (chan->flag & IEEE80211_CHAN_W_SCAN && - chan->chan == local->hw.conf.channel) { - if (chan->flag & IEEE80211_CHAN_W_ACTIVE_SCAN) - return 1; - break; - } - } - } - - return 0; -} - - -void ieee80211_scan_completed(struct ieee80211_hw *hw) -{ - struct ieee80211_local *local = hw_to_local(hw); - struct net_device *dev = local->scan_dev; - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - union iwreq_data wrqu; - - printk(KERN_DEBUG "%s: scan completed\n", dev->name); - local->sta_scanning = 0; - local->last_scan_completed = jiffies; - - memset(&wrqu, 0, sizeof(wrqu)); - wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); - - if (sdata->type == IEEE80211_IF_TYPE_IBSS) { - struct ieee80211_if_sta *ifsta = &sdata->u.sta; - if (!ifsta->bssid_set || - (!ifsta->state == IEEE80211_IBSS_JOINED && - !ieee80211_sta_active_ibss(dev))) - ieee80211_sta_find_ibss(dev, ifsta); - } -} -EXPORT_SYMBOL(ieee80211_scan_completed); - -void ieee80211_sta_scan_work(struct work_struct *work) -{ - struct ieee80211_local *local = - container_of(work, struct ieee80211_local, scan_work.work); - struct net_device *dev = local->scan_dev; - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_hw_mode *mode; - struct ieee80211_channel *chan; - int skip; - unsigned long next_delay = 0; - - if (!local->sta_scanning) - return; - - switch (local->scan_state) { - case SCAN_SET_CHANNEL: - mode = local->scan_hw_mode; - if (local->scan_hw_mode->list.next == &local->modes_list && - local->scan_channel_idx >= mode->num_channels) { - if (ieee80211_sta_restore_oper_chan(dev)) { - printk(KERN_DEBUG "%s: failed to restore " - "operational channel after scan\n", - dev->name); - } - - ieee80211_scan_completed(local_to_hw(local)); - return; - } - skip = !(local->enabled_modes & (1 << mode->mode)); - chan = &mode->channels[local->scan_channel_idx]; - if (!(chan->flag & IEEE80211_CHAN_W_SCAN) || - (sdata->type == IEEE80211_IF_TYPE_IBSS && - !(chan->flag & IEEE80211_CHAN_W_IBSS)) || - (local->hw_modes & local->enabled_modes & - (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B)) - skip = 1; - - if (!skip) { -#if 0 - printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n", - dev->name, chan->chan, chan->freq); -#endif - - local->hw.conf.channel = chan->chan; - local->hw.conf.channel_val = chan->val; - local->hw.conf.power_level = chan->power_level; - local->hw.conf.freq = chan->freq; - local->hw.conf.phymode = mode->mode; - local->hw.conf.antenna_max = chan->antenna_max; - if (ieee80211_hw_config(local)) { - printk(KERN_DEBUG "%s: failed to set channel " - "%d (%d MHz) for scan\n", dev->name, - chan->chan, chan->freq); - skip = 1; - } - } - - local->scan_channel_idx++; - if (local->scan_channel_idx >= local->scan_hw_mode->num_channels) { - if (local->scan_hw_mode->list.next != &local->modes_list) { - local->scan_hw_mode = list_entry(local->scan_hw_mode->list.next, - struct ieee80211_hw_mode, - list); - local->scan_channel_idx = 0; - } - } - - if (skip) - break; - - next_delay = IEEE80211_PROBE_DELAY + - usecs_to_jiffies(local->hw.channel_change_time); - local->scan_state = SCAN_SEND_PROBE; - break; - case SCAN_SEND_PROBE: - if (ieee80211_active_scan(local)) { - ieee80211_send_probe_req(dev, NULL, local->scan_ssid, - local->scan_ssid_len); - next_delay = IEEE80211_CHANNEL_TIME; - } else - next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; - local->scan_state = SCAN_SET_CHANNEL; - break; - } - - if (local->sta_scanning) { - if (next_delay) - schedule_delayed_work(&local->scan_work, next_delay); - else - schedule_work(&local->scan_work.work); - } -} - - -int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - - if (ssid_len > IEEE80211_MAX_SSID_LEN) - return -EINVAL; - - /* MLME-SCAN.request (page 118) page 144 (11.1.3.1) - * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS - * BSSID: MACAddress - * SSID - * ScanType: ACTIVE, PASSIVE - * ProbeDelay: delay (in microseconds) to be used prior to transmitting - * a Probe frame during active scanning - * ChannelList - * MinChannelTime (>= ProbeDelay), in TU - * MaxChannelTime: (>= MinChannelTime), in TU - */ - - /* MLME-SCAN.confirm - * BSSDescriptionSet - * ResultCode: SUCCESS, INVALID_PARAMETERS - */ - - /* TODO: if assoc, move to power save mode for the duration of the - * scan */ - - if (local->sta_scanning) { - if (local->scan_dev == dev) - return 0; - return -EBUSY; - } - - printk(KERN_DEBUG "%s: starting scan\n", dev->name); - - if (local->ops->hw_scan) { - int rc = local->ops->hw_scan(local_to_hw(local), - ssid, ssid_len); - if (!rc) { - local->sta_scanning = 1; - local->scan_dev = dev; - } - return rc; - } - - ieee80211_sta_save_oper_chan(dev); - - local->sta_scanning = 1; - /* TODO: stop TX queue? */ - - if (ssid) { - local->scan_ssid_len = ssid_len; - memcpy(local->scan_ssid, ssid, ssid_len); - } else - local->scan_ssid_len = 0; - local->scan_state = SCAN_SET_CHANNEL; - local->scan_hw_mode = list_entry(local->modes_list.next, - struct ieee80211_hw_mode, - list); - local->scan_channel_idx = 0; - local->scan_dev = dev; - schedule_work(&local->scan_work.work); - - return 0; -} - - -static char * -ieee80211_sta_scan_result(struct net_device *dev, - struct ieee80211_sta_bss *bss, - char *current_ev, char *end_buf) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct iw_event iwe; - - if (time_after(jiffies, - bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) - return current_ev; - - if (!(local->enabled_modes & (1 << bss->hw_mode))) - return current_ev; - - if (local->scan_flags & IEEE80211_SCAN_WPA_ONLY && - !bss->wpa_ie && !bss->rsn_ie) - return current_ev; - - if (local->scan_flags & IEEE80211_SCAN_MATCH_SSID && - (local->scan_ssid_len != bss->ssid_len || - memcmp(local->scan_ssid, bss->ssid, bss->ssid_len) != 0)) - return current_ev; - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWAP; - iwe.u.ap_addr.sa_family = ARPHRD_ETHER; - memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN); - current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, - IW_EV_ADDR_LEN); - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWESSID; - iwe.u.data.length = bss->ssid_len; - iwe.u.data.flags = 1; - current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, - bss->ssid); - - if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) { - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWMODE; - if (bss->capability & WLAN_CAPABILITY_ESS) - iwe.u.mode = IW_MODE_MASTER; - else - iwe.u.mode = IW_MODE_ADHOC; - current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, - IW_EV_UINT_LEN); - } - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWFREQ; - iwe.u.freq.m = bss->freq * 100000; - iwe.u.freq.e = 1; - current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, - IW_EV_FREQ_LEN); - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = SIOCGIWENCODE; - if (bss->capability & WLAN_CAPABILITY_PRIVACY) - iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; - else - iwe.u.data.flags = IW_ENCODE_DISABLED; - iwe.u.data.length = 0; - current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, ""); - - if (bss && bss->wpa_ie) { - char *buf, *p; - int i; - buf = kmalloc(30 + bss->wpa_ie_len * 2, GFP_ATOMIC); - if (buf) { - p = buf; - p += sprintf(p, "wpa_ie="); - for (i = 0; i < bss->wpa_ie_len; i++) - p+= sprintf(p, "%02x", bss->wpa_ie[i]); - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVCUSTOM; - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(current_ev, end_buf, - &iwe, buf); - kfree(buf); - } - } - - if (bss && bss->rsn_ie) { - char *buf, *p; - int i; - buf = kmalloc(30 + bss->rsn_ie_len * 2, GFP_ATOMIC); - if (buf) { - p = buf; - p += sprintf(p, "rsn_ie="); - for (i = 0; i < bss->rsn_ie_len; i++) - p+= sprintf(p, "%02x", bss->rsn_ie[i]); - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVCUSTOM; - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(current_ev, end_buf, - &iwe, buf); - kfree(buf); - } - } - - if (bss) { - char *buf; - buf = kmalloc(30, GFP_ATOMIC); - if (buf) { - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVCUSTOM; - sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp)); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(current_ev, end_buf, - &iwe, buf); - kfree(buf); - } - } - - do { - char *buf, *p; - int i; - - if (!(local->scan_flags & IEEE80211_SCAN_EXTRA_INFO)) - break; - - buf = kmalloc(100, GFP_ATOMIC); - if (!buf) - break; - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVCUSTOM; - sprintf(buf, "bcn_int=%d", bss->beacon_int); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, - buf); - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVCUSTOM; - sprintf(buf, "rssi=%d", bss->rssi); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, - buf); - - memset(&iwe, 0, sizeof(iwe)); - iwe.cmd = IWEVCUSTOM; - sprintf(buf, "capab=0x%04x", bss->capability); - iwe.u.data.length = strlen(buf); - current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, - buf); - - /* dispaly all support rates in readable format */ - p = current_ev + IW_EV_LCP_LEN; - iwe.cmd = SIOCGIWRATE; - /* Those two flags are ignored... */ - iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; - - for (i = 0; i < bss->supp_rates_len; i++) { - iwe.u.bitrate.value = ((bss->supp_rates[i] & - 0x7f) * 500000); - p = iwe_stream_add_value(current_ev, p, - end_buf, &iwe, IW_EV_PARAM_LEN); - } - /* Check if we added any rate */ - if((p - current_ev) > IW_EV_LCP_LEN) - current_ev = p; - - kfree(buf); - break; - } while (0); - - return current_ev; -} - - -int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - char *current_ev = buf; - char *end_buf = buf + len; - struct ieee80211_sta_bss *bss; - - spin_lock_bh(&local->sta_bss_lock); - list_for_each_entry(bss, &local->sta_bss_list, list) { - if (buf + len - current_ev <= IW_EV_ADDR_LEN) { - spin_unlock_bh(&local->sta_bss_lock); - return -E2BIG; - } - current_ev = ieee80211_sta_scan_result(dev, bss, current_ev, - end_buf); - } - spin_unlock_bh(&local->sta_bss_lock); - return current_ev - buf; -} - - -int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_if_sta *ifsta = &sdata->u.sta; - kfree(ifsta->extra_ie); - if (len == 0) { - ifsta->extra_ie = NULL; - ifsta->extra_ie_len = 0; - return 0; - } - ifsta->extra_ie = kmalloc(len, GFP_KERNEL); - if (!ifsta->extra_ie) { - ifsta->extra_ie_len = 0; - return -ENOMEM; - } - memcpy(ifsta->extra_ie, ie, len); - ifsta->extra_ie_len = len; - if (ifsta->bssid_set && ifsta->ssid_set && - ifsta->state != IEEE80211_AUTHENTICATE) - ieee80211_sta_new_auth(dev, ifsta); - return 0; -} - - -struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, - struct sk_buff *skb, u8 *bssid, - u8 *addr) -{ - struct ieee80211_local *local = dev->ieee80211_ptr; - struct sta_info *sta; - struct ieee80211_sub_if_data *sdata = NULL; - struct net_device *sta_dev = NULL; - - /* TODO: Could consider removing the least recently used entry and - * allow new one to be added. */ - if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: No room for a new IBSS STA " - "entry " MAC_FMT "\n", dev->name, MAC_ARG(addr)); - } - return NULL; - } - - spin_lock_bh(&local->sub_if_lock); - list_for_each_entry(sdata, &local->sub_if_list, list) - if (sdata->type == IEEE80211_IF_TYPE_IBSS && - memcmp(bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { - sta_dev = sdata->dev; - break; - } - spin_unlock_bh(&local->sub_if_lock); - - if (!sta_dev) - return NULL; - - printk(KERN_DEBUG "%s: Adding new IBSS station " MAC_FMT " (dev=%s)\n", - dev->name, MAC_ARG(addr), sta_dev->name); - - sta = sta_info_add(local, dev, addr, GFP_ATOMIC); - if (!sta) - return NULL; - - sta->dev = sta_dev; - sta->supp_rates = sdata->u.sta.supp_rates_bits; - - rate_control_rate_init(sta, local); - - return sta; /* caller will call sta_info_put() */ -} - - -int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_if_sta *ifsta = &sdata->u.sta; - - printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n", - dev->name, reason); - - if (sdata->type != IEEE80211_IF_TYPE_STA && - sdata->type != IEEE80211_IF_TYPE_IBSS) - return -EINVAL; - - ieee80211_send_deauth(dev, ifsta, reason); - ieee80211_set_disassoc(dev, ifsta, 1); - return 0; -} - - -int ieee80211_sta_disassociate(struct net_device *dev, u16 reason) -{ - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_if_sta *ifsta = &sdata->u.sta; - - printk(KERN_DEBUG "%s: disassociate(reason=%d)\n", - dev->name, reason); - - if (sdata->type != IEEE80211_IF_TYPE_STA) - return -EINVAL; - - if (!ifsta->associated) - return -1; - - ieee80211_send_disassoc(dev, ifsta, reason); - ieee80211_set_disassoc(dev, ifsta, 0); - return 0; -} -- cgit v1.2.3