ibss.c revision d9a7ddb05e5419ca5e4b54f57074dc33c7ea991c
1469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* 2469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * IBSS mode implementation 3469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * Copyright 2003-2008, Jouni Malinen <j@w1.fi> 4469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * Copyright 2004, Instant802 Networks, Inc. 5469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * Copyright 2005, Devicescape Software, Inc. 6469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 7469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * Copyright 2007, Michael Wu <flamingice@sourmilk.net> 8469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * Copyright 2009, Johannes Berg <johannes@sipsolutions.net> 9469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * 10469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * This program is free software; you can redistribute it and/or modify 11469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * it under the terms of the GNU General Public License version 2 as 12469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * published by the Free Software Foundation. 13469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 14469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 15469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include <linux/delay.h> 165a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 17469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include <linux/if_ether.h> 18469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include <linux/skbuff.h> 19469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include <linux/if_arp.h> 20469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include <linux/etherdevice.h> 21469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include <linux/rtnetlink.h> 22469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include <net/mac80211.h> 23469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include <asm/unaligned.h> 24469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 25469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include "ieee80211_i.h" 262448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg#include "driver-ops.h" 27469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include "rate.h" 28469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 29469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_SCAN_INTERVAL (2 * HZ) 30469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) 31469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) 32469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 33469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) 34469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) 35469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 36469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_MAX_STA_ENTRIES 128 37469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 38469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 39469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, 40469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 41469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len) 42469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 430915cba394268e68b6a8242b15f8c7283453df43Rajkumar Manoharan u16 auth_alg, auth_transaction; 44469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 457a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 467a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 47469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (len < 24 + 6) 48469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 49469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 50469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); 51469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); 52469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 53469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* 54469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * IEEE 802.11 standard does not require authentication in IBSS 55469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * networks and most implementations do not seem to use it. 56469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * However, try to reply to authentication attempts if someone 57469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * has actually implemented this. 58469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 59469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) 60469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, NULL, 0, 61fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.bssid, NULL, 0, 0); 62469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 63469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 64af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 65af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg const u8 *bssid, const int beacon_int, 66af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan, 67b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg const u32 basic_rates, 68af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg const u16 capability, u64 tsf) 69469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 70469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 71469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 72b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rates, i; 73469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 74469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 75469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos; 76469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_supported_band *sband; 77f446d10f214091408b7300f15c9adf60569edf28Johannes Berg struct cfg80211_bss *bss; 7857c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg u32 bss_change; 79b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 8013c40c54682ffe62977f670681268a26d500d6faAlexander Simon enum nl80211_channel_type channel_type; 812448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg 827a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 837a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 842448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* Reset own TSF to allow time synchronization work. */ 8537a41b4affa33bb237d3692bf51f1b5ebcaf29d8Eliad Peller drv_reset_tsf(local, sdata); 86469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 87af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb = ifibss->skb; 88a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(ifibss->presp, NULL); 89af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 90af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb->data = skb->head; 91af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb->len = 0; 92af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb_reset_tail_pointer(skb); 93af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb_reserve(skb, sdata->local->hw.extra_tx_headroom); 94469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 95af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (memcmp(ifibss->bssid, bssid, ETH_ALEN)) 96af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sta_info_flush(sdata->local, sdata); 97469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9849b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg /* if merging, indicate to driver that we leave the old IBSS */ 9949b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg if (sdata->vif.bss_conf.ibss_joined) { 10049b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 10186a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_off(sdata->dev); 10249b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IBSS); 10349b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg } 10449b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg 105469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(ifibss->bssid, bssid, ETH_ALEN); 106469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 107af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0; 108469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 10913c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type = ifibss->channel_type; 11013c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (channel_type > NL80211_CHAN_HT20 && 11113c40c54682ffe62977f670681268a26d500d6faAlexander Simon !cfg80211_can_beacon_sec_chan(local->hw.wiphy, chan, channel_type)) 11213c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type = NL80211_CHAN_HT20; 11313c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (!ieee80211_set_channel_type(local, sdata, channel_type)) { 11413c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* can only fail due to HT40+/- mismatch */ 11513c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type = NL80211_CHAN_HT20; 11613c40c54682ffe62977f670681268a26d500d6faAlexander Simon WARN_ON(!ieee80211_set_channel_type(local, sdata, 11713c40c54682ffe62977f670681268a26d500d6faAlexander Simon NL80211_CHAN_HT20)); 11813c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 119af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 12057c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 121af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sband = local->hw.wiphy->bands[chan->band]; 122469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 123b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg /* build supported rates array */ 124b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg pos = supp_rates; 125b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < sband->n_bitrates; i++) { 126b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = sband->bitrates[i].bitrate; 127b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 basic = 0; 128b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (basic_rates & BIT(i)) 129b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic = 0x80; 130b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg *pos++ = basic | (u8) (rate / 5); 131b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 132b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 133469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Build IBSS probe response */ 134af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mgmt = (void *) skb_put(skb, 24 + sizeof(mgmt->u.beacon)); 135469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); 136469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 137469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_STYPE_PROBE_RESP); 138469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memset(mgmt->da, 0xff, ETH_ALEN); 13947846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 140469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 14157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_int); 142707c1b4e68a2811ff2c9e75750a98a3310789a2dSujith mgmt->u.beacon.timestamp = cpu_to_le64(tsf); 143469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->u.beacon.capab_info = cpu_to_le16(capability); 144469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 145469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + ifibss->ssid_len); 146469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SSID; 147469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = ifibss->ssid_len; 148469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, ifibss->ssid, ifibss->ssid_len); 149469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 150b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates; 151469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rates > 8) 152469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rates = 8; 153469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 154469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SUPP_RATES; 155469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 156469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, supp_rates, rates); 157469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 158469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sband->band == IEEE80211_BAND_2GHZ) { 159469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 1); 160469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_DS_PARAMS; 161469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 1; 162af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg *pos++ = ieee80211_frequency_to_channel(chan->center_freq); 163469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 164469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 165469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 2); 166469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_IBSS_PARAMS; 167469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 2; 168469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* FIX: set ATIM window based on scan results */ 169469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 170469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 171469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 172b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->n_bitrates > 8) { 173b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates - 8; 174469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 175469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 176469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 177469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, &supp_rates[8], rates); 178469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 179469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 180af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->ie_len) 181af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(skb_put(skb, ifibss->ie_len), 182af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ifibss->ie, ifibss->ie_len); 183af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 18413c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* add HT capability and information IEs */ 18513c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (channel_type && sband->ht_cap.ht_supported) { 18613c40c54682ffe62977f670681268a26d500d6faAlexander Simon pos = skb_put(skb, 4 + 18713c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(struct ieee80211_ht_cap) + 18813c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(struct ieee80211_ht_info)); 18913c40c54682ffe62977f670681268a26d500d6faAlexander Simon pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 19013c40c54682ffe62977f670681268a26d500d6faAlexander Simon sband->ht_cap.cap); 19113c40c54682ffe62977f670681268a26d500d6faAlexander Simon pos = ieee80211_ie_build_ht_info(pos, 19213c40c54682ffe62977f670681268a26d500d6faAlexander Simon &sband->ht_cap, 19313c40c54682ffe62977f670681268a26d500d6faAlexander Simon chan, 19413c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type); 19513c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 19613c40c54682ffe62977f670681268a26d500d6faAlexander Simon 1979eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (local->hw.queues >= 4) { 1989eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf pos = skb_put(skb, 9); 1999eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = WLAN_EID_VENDOR_SPECIFIC; 2009eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 7; /* len */ 2019eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ 2029eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x50; 2039eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0xf2; 2049eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 2; /* WME */ 2059eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* WME info */ 2069eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 1; /* WME ver */ 2079eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* U-APSD no in use */ 2089eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 2099eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 210a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(ifibss->presp, skb); 211469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 2122d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg sdata->vif.bss_conf.beacon_int = beacon_int; 213fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->vif.bss_conf.basic_rates = basic_rates; 2142d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change = BSS_CHANGED_BEACON_INT; 2152d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= ieee80211_reset_erp_info(sdata); 2162d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BSSID; 2172d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON; 2182d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON_ENABLED; 219392cfdb10dab6c7dfa5fed18d8a44d7453d42196Teemu Paasikivi bss_change |= BSS_CHANGED_BASIC_RATES; 22013c40c54682ffe62977f670681268a26d500d6faAlexander Simon bss_change |= BSS_CHANGED_HT; 2218fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg bss_change |= BSS_CHANGED_IBSS; 2228fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = true; 2232d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg ieee80211_bss_info_change_notify(sdata, bss_change); 224469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 225b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg ieee80211_sta_def_wmm_params(sdata, sband->n_bitrates, supp_rates); 226469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 227469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ifibss->state = IEEE80211_IBSS_MLME_JOINED; 228af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 229af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 230469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 231f446d10f214091408b7300f15c9adf60569edf28Johannes Berg bss = cfg80211_inform_bss_frame(local->hw.wiphy, local->hw.conf.channel, 232f446d10f214091408b7300f15c9adf60569edf28Johannes Berg mgmt, skb->len, 0, GFP_KERNEL); 233f446d10f214091408b7300f15c9adf60569edf28Johannes Berg cfg80211_put_bss(bss); 23486a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_on(sdata->dev); 235af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL); 236469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 237469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 238af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 239af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_bss *bss) 240469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 2410c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss = 2420c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg container_of((void *)bss, struct cfg80211_bss, priv); 243b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg struct ieee80211_supported_band *sband; 244b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u32 basic_rates; 245b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int i, j; 2460c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg u16 beacon_int = cbss->beacon_interval; 24757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2487a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 2497a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 25057c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg if (beacon_int < 10) 25157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int = 10; 25257c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2530c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sband = sdata->local->hw.wiphy->bands[cbss->channel->band]; 254b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 255b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates = 0; 256b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 257b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < bss->supp_rates_len; i++) { 258b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = (bss->supp_rates[i] & 0x7f) * 5; 259b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg bool is_basic = !!(bss->supp_rates[i] & 0x80); 260b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 261b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (j = 0; j < sband->n_bitrates; j++) { 262b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->bitrates[j].bitrate == rate) { 263b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (is_basic) 264b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates |= BIT(j); 265b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg break; 266b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 267b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 268b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 269b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 2700c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg __ieee80211_sta_join_ibss(sdata, cbss->bssid, 27157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int, 2720c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->channel, 273b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates, 2740c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->capability, 2750c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->tsf); 276469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 277469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 278469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, 279469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 280469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 281469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status, 282469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems *elems, 283469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bool beacon) 284469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 285469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 286469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int freq; 2870c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 288469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_bss *bss; 289469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 290469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_channel *channel; 291469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u64 beacon_timestamp, rx_timestamp; 292469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u32 supp_rates = 0; 293469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg enum ieee80211_band band = rx_status->band; 29413c40c54682ffe62977f670681268a26d500d6faAlexander Simon struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; 29513c40c54682ffe62977f670681268a26d500d6faAlexander Simon bool rates_updated = false; 296469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 297469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ds_params && elems->ds_params_len == 1) 29859eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf freq = ieee80211_channel_to_frequency(elems->ds_params[0], 29959eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf band); 300469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 301469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg freq = rx_status->freq; 302469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 303469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel = ieee80211_get_channel(local->hw.wiphy, freq); 304469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 305469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 306469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 307469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 3089eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sdata->vif.type == NL80211_IFTYPE_ADHOC && 309469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) { 310469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 311469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 312abe60632f311d515b082b450504ee24006023951Johannes Berg sta = sta_info_get(sdata, mgmt->sa); 313469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 3149eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (elems->supp_rates) { 3159eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, 3169eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf band); 3179eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta) { 3189eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf u32 prev_rates; 3199eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 3209eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates = sta->sta.supp_rates[band]; 3219eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf /* make sure mandatory rates are always added */ 3229eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band] = supp_rates | 3239eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf ieee80211_mandatory_rates(local, band); 324469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 3259eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta->sta.supp_rates[band] != prev_rates) { 326469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 3279eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf printk(KERN_DEBUG 3289eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "%s: updated supp_rates set " 3299eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "for %pM based on beacon" 3309eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "/probe_resp (0x%x -> 0x%x)\n", 3319eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sdata->name, sta->sta.addr, 3329eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates, 3339eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band]); 334469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 33513c40c54682ffe62977f670681268a26d500d6faAlexander Simon rates_updated = true; 3369eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 3379eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } else 3389eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, 3399eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf mgmt->sa, supp_rates, 3409eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf GFP_ATOMIC); 34134e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg } 3429eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 3439eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta && elems->wmm_info) 344c2c98fdeb5c897499644eb247285c8e3dacc6450Johannes Berg set_sta_flag(sta, WLAN_STA_WME); 3459eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 34613c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (sta && elems->ht_info_elem && elems->ht_cap_elem && 34713c40c54682ffe62977f670681268a26d500d6faAlexander Simon sdata->u.ibss.channel_type != NL80211_CHAN_NO_HT) { 34813c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* we both use HT */ 34913c40c54682ffe62977f670681268a26d500d6faAlexander Simon struct ieee80211_sta_ht_cap sta_ht_cap_new; 35013c40c54682ffe62977f670681268a26d500d6faAlexander Simon enum nl80211_channel_type channel_type = 35113c40c54682ffe62977f670681268a26d500d6faAlexander Simon ieee80211_ht_info_to_channel_type( 35213c40c54682ffe62977f670681268a26d500d6faAlexander Simon elems->ht_info_elem); 35313c40c54682ffe62977f670681268a26d500d6faAlexander Simon 35413c40c54682ffe62977f670681268a26d500d6faAlexander Simon ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 35513c40c54682ffe62977f670681268a26d500d6faAlexander Simon elems->ht_cap_elem, 35613c40c54682ffe62977f670681268a26d500d6faAlexander Simon &sta_ht_cap_new); 35713c40c54682ffe62977f670681268a26d500d6faAlexander Simon 35813c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* 35913c40c54682ffe62977f670681268a26d500d6faAlexander Simon * fall back to HT20 if we don't use or use 36013c40c54682ffe62977f670681268a26d500d6faAlexander Simon * the other extension channel 36113c40c54682ffe62977f670681268a26d500d6faAlexander Simon */ 36213c40c54682ffe62977f670681268a26d500d6faAlexander Simon if ((channel_type == NL80211_CHAN_HT40MINUS || 36313c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type == NL80211_CHAN_HT40PLUS) && 36413c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type != sdata->u.ibss.channel_type) 36513c40c54682ffe62977f670681268a26d500d6faAlexander Simon sta_ht_cap_new.cap &= 36613c40c54682ffe62977f670681268a26d500d6faAlexander Simon ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; 36713c40c54682ffe62977f670681268a26d500d6faAlexander Simon 36813c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (memcmp(&sta->sta.ht_cap, &sta_ht_cap_new, 36913c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(sta_ht_cap_new))) { 37013c40c54682ffe62977f670681268a26d500d6faAlexander Simon memcpy(&sta->sta.ht_cap, &sta_ht_cap_new, 37113c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(sta_ht_cap_new)); 37213c40c54682ffe62977f670681268a26d500d6faAlexander Simon rates_updated = true; 37313c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 37413c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 37513c40c54682ffe62977f670681268a26d500d6faAlexander Simon 37613c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (sta && rates_updated) 37713c40c54682ffe62977f670681268a26d500d6faAlexander Simon rate_control_rate_init(sta); 37813c40c54682ffe62977f670681268a26d500d6faAlexander Simon 3799eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf rcu_read_unlock(); 380469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 381469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 382469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, 383469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel, beacon); 384469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!bss) 385469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 386469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 3870c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = container_of((void *)bss, struct cfg80211_bss, priv); 3880c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 389469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* was just updated in ieee80211_bss_info_update */ 3900c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg beacon_timestamp = cbss->tsf; 391469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 392469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* check if we need to merge IBSS */ 393469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 394469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* we use a fixed BSSID */ 395a98bfec2985221d8e0904a526cbe88590eaad2a6Benoit Papillault if (sdata->u.ibss.fixed_bssid) 396469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 397469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 398469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* not an IBSS */ 3990c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (!(cbss->capability & WLAN_CAPABILITY_IBSS)) 400469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 401469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 402469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different channel */ 4030c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss->channel != local->oper_channel) 404469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 405469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 406469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different SSID */ 407469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ssid_len != sdata->u.ibss.ssid_len || 408469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(elems->ssid, sdata->u.ibss.ssid, 409469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->u.ibss.ssid_len)) 410469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 411469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 41234e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen /* same BSSID */ 4130c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (memcmp(cbss->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) 41434e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen goto put_bss; 41534e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen 4166ebacbb79d2d05978ba50a24d8cbe2a76ff2014cJohannes Berg if (rx_status->flag & RX_FLAG_MACTIME_MPDU) { 417469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* 418469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * For correct IBSS merging we need mactime; since mactime is 419469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * defined as the time the first data symbol of the frame hits 420469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * the PHY, and the timestamp of the beacon is defined as "the 421469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * time that the data symbol containing the first bit of the 422469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * timestamp is transmitted to the PHY plus the transmitting 423469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * STA's delays through its local PHY from the MAC-PHY 424469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * interface to its interface with the WM" (802.11 11.1.2) 425469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * - equals the time this bit arrives at the receiver - we have 426469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * to take into account the offset between the two. 427469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * 428469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * E.g. at 1 MBit that means mactime is 192 usec earlier 429469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * (=24 bytes * 8 usecs/byte) than the beacon timestamp. 430469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 431469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int rate; 432469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 433469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rx_status->flag & RX_FLAG_HT) 434469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate = 65; /* TODO: HT rates */ 435469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 436469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate = local->hw.wiphy->bands[band]-> 437469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bitrates[rx_status->rate_idx].bitrate; 438469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 439469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); 4402448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } else { 4412448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* 4422448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * second best option: get current TSF 4432448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * (will return -1 if not supported) 4442448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg */ 44537a41b4affa33bb237d3692bf51f1b5ebcaf29d8Eliad Peller rx_timestamp = drv_get_tsf(local, sdata); 4462448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } 447469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 448469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 449469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "RX beacon SA=%pM BSSID=" 450469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", 451469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->sa, mgmt->bssid, 452469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)rx_timestamp, 453469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)beacon_timestamp, 454469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)(rx_timestamp - beacon_timestamp), 455469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies); 456469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 457469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 458469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (beacon_timestamp > rx_timestamp) { 459469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 460469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: beacon TSF higher than " 461469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "local TSF - IBSS merge with BSSID %pM\n", 46247846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->bssid); 463469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 464469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_join_ibss(sdata, bss); 46509a08cff3d13315c948e6aee5cf912f8f1db54e7Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, band); 46634e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 46734e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg supp_rates, GFP_KERNEL); 468469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 469469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 470469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg put_bss: 471469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 472469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 473469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 474469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* 475469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * Add a new IBSS station, will also be called by the RX code when, 476469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * in IBSS mode, receiving a frame from a yet-unknown station, hence 477469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * must be callable in atomic context. 478469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 479469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstruct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 480a7ce1c9446a7f7513211e4698d07357d20452909Alexander Simon u8 *bssid, u8 *addr, u32 supp_rates, 48134e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg gfp_t gfp) 482469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 4832e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 484469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 485469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 486469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int band = local->hw.conf.channel->band; 487469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 488af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* 489af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * XXX: Consider removing the least recently used entry and 490af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * allow new one to be added. 491af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg */ 492469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 493af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (net_ratelimit()) 494af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg printk(KERN_DEBUG "%s: No room for a new IBSS STA entry %pM\n", 49547846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, addr); 496469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return NULL; 497469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 498469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4992e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) 5002e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau return NULL; 5012e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau 502469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (compare_ether_addr(bssid, sdata->u.ibss.bssid)) 503469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return NULL; 504469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 505469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_VERBOSE_DEBUG 5060fb9a9ec27718fbf7fa3153bc94becefb716ceebJoe Perches wiphy_debug(local->hw.wiphy, "Adding new IBSS station %pM (dev=%s)\n", 5070fb9a9ec27718fbf7fa3153bc94becefb716ceebJoe Perches addr, sdata->name); 508469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 509469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 51034e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg sta = sta_info_alloc(sdata, addr, gfp); 511469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!sta) 512469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return NULL; 513469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 514c8716d9dc13c7f6ee92f2bfc6cc3b723b417bff8Rajkumar Manoharan sta->last_rx = jiffies; 515d9a7ddb05e5419ca5e4b54f57074dc33c7ea991cJohannes Berg 516d9a7ddb05e5419ca5e4b54f57074dc33c7ea991cJohannes Berg sta_info_move_state(sta, IEEE80211_STA_AUTH); 517d9a7ddb05e5419ca5e4b54f57074dc33c7ea991cJohannes Berg sta_info_move_state(sta, IEEE80211_STA_ASSOC); 518d9a7ddb05e5419ca5e4b54f57074dc33c7ea991cJohannes Berg sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 519469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 520469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* make sure mandatory rates are always added */ 521469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sta->sta.supp_rates[band] = supp_rates | 522469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_mandatory_rates(local, band); 523469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 524469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate_control_rate_init(sta); 525469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 52634e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg /* If it fails, maybe we raced another insertion? */ 527469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta_info_insert(sta)) 52834e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg return sta_info_get(sdata, addr); 529469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return sta; 530469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 531469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 532469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) 533469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 534469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 535469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active = 0; 536469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 537469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5387a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 5397a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 540469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 541469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 542469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg list_for_each_entry_rcu(sta, &local->sta_list, list) { 543469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta->sdata == sdata && 544469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, 545469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies)) { 546469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active++; 547469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 548469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 549469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 550469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 551469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_unlock(); 552469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 553469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return active; 554469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 555469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 556ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 557ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_JOINED 558ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 559469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 560469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) 561469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 562469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 563469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5647a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 5657a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 566af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 567af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 568469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 569469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); 570af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 571450aae3d7b60a970f266349a837dfb30a539198bSujith if (time_before(jiffies, ifibss->last_scan_completed + 572450aae3d7b60a970f266349a837dfb30a539198bSujith IEEE80211_IBSS_MERGE_INTERVAL)) 573450aae3d7b60a970f266349a837dfb30a539198bSujith return; 574450aae3d7b60a970f266349a837dfb30a539198bSujith 575469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ieee80211_sta_active_ibss(sdata)) 576469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 577469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 578af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 579469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 580469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 581469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " 58247846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg "IBSS networks with same SSID (merge)\n", sdata->name); 583469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 584be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 585be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->ssid, ifibss->ssid_len, 586be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->fixed_channel ? ifibss->channel : NULL); 587469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 588469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 589af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) 590469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 591469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 592469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 bssid[ETH_ALEN]; 593469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 capability; 594469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int i; 595469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5967a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 5977a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 598af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) { 599469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(bssid, ifibss->bssid, ETH_ALEN); 600469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } else { 601469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Generate random, not broadcast, locally administered BSSID. Mix in 602469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * own MAC address to make sure that devices that do not have proper 603469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * random number generator get different BSSID. */ 604469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg get_random_bytes(bssid, ETH_ALEN); 605469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg for (i = 0; i < ETH_ALEN; i++) 60647846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg bssid[i] ^= sdata->vif.addr[i]; 607469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] &= ~0x01; 608469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] |= 0x02; 609469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 610469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 611469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n", 61247846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, bssid); 613469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 614469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability = WLAN_CAPABILITY_IBSS; 615469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 616fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 617469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 618469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 619469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->drop_unencrypted = 0; 620469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 62157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int, 622fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi ifibss->channel, ifibss->basic_rates, 623b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg capability, 0); 624469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 625469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 626ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 627ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_SEARCH 628ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 629ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault 630af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) 631469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 632469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 633469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 6340c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 635af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan = NULL; 636469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg const u8 *bssid = NULL; 637469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active_ibss; 638e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg u16 capability; 639469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6407a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 6417a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 642469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active_ibss = ieee80211_sta_active_ibss(sdata); 643469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 644469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", 64547846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, active_ibss); 646469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 647469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 648469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (active_ibss) 649af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 650469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 651e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability = WLAN_CAPABILITY_IBSS; 652fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 653e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 654af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) 655af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg bssid = ifibss->bssid; 656af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 657af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg chan = ifibss->channel; 658af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!is_zero_ether_addr(ifibss->bssid)) 659469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid = ifibss->bssid; 6600c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid, 6610c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg ifibss->ssid, ifibss->ssid_len, 6620c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY, 6630c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg capability); 6640c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 6650c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss) { 6660c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct ieee80211_bss *bss; 667469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6680c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg bss = (void *)cbss->priv; 669469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 670469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG " sta_find_ibss: selected %pM current " 6710c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg "%pM\n", cbss->bssid, ifibss->bssid); 672469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 673469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 674469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM" 675469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg " based on configured SSID\n", 6760c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sdata->name, cbss->bssid); 677469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 678af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_join_ibss(sdata, bss); 679469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 680af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 681d419b9f0fa69e79ccba3e5e79a58a52ae0c2ed6aReinette Chatre } 682469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 683469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 684469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG " did not try to join ibss\n"); 685469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 686469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 687469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Selected IBSS not found in current scan results - try to scan */ 688ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault if (time_after(jiffies, ifibss->last_scan_completed + 689469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_SCAN_INTERVAL)) { 690469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " 69147846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg "join\n", sdata->name); 692469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 693be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 694be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->ssid, ifibss->ssid_len, 695be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->fixed_channel ? ifibss->channel : NULL); 696ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault } else { 697469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int interval = IEEE80211_SCAN_INTERVAL; 698469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 699469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (time_after(jiffies, ifibss->ibss_join_req + 700469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_IBSS_JOIN_TIMEOUT)) { 701af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!(local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS)) { 702af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_create_ibss(sdata); 703af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 704af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 705469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: IBSS not allowed on" 70647846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg " %d MHz\n", sdata->name, 707469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg local->hw.conf.channel->center_freq); 708469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 709469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* No IBSS found - decrease scan interval and continue 710469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * scanning. */ 711469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg interval = IEEE80211_SCAN_INTERVAL_SLOW; 712469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 713469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 714af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 715af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + interval)); 716469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 717469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 718469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 719469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, 720c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct sk_buff *req) 721469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 722c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct ieee80211_mgmt *mgmt = (void *)req->data; 723469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 724469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 725c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg int tx_last_beacon, len = req->len; 726469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 727469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *resp; 72840b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg struct sk_buff *presp; 729469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos, *end; 730469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7317a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 7327a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 73340b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg presp = rcu_dereference_protected(ifibss->presp, 73440b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg lockdep_is_held(&ifibss->mtx)); 73540b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg 736469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ifibss->state != IEEE80211_IBSS_MLME_JOINED || 73740b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg len < 24 + 2 || !presp) 738469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 739469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7402448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg tx_last_beacon = drv_tx_last_beacon(local); 741469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 742469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 743469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: RX ProbeReq SA=%pM DA=%pM BSSID=%pM" 744469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg " (tx_last_beacon=%d)\n", 74547846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->sa, mgmt->da, 746469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->bssid, tx_last_beacon); 747469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 748469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7491ed76487ce115110171480deabd3cd4656f9803eFelix Fietkau if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da)) 750469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 751469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 752469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (memcmp(mgmt->bssid, ifibss->bssid, ETH_ALEN) != 0 && 753469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) 754469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 755469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 756469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg end = ((u8 *) mgmt) + len; 757469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = mgmt->u.probe_req.variable; 758469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[0] != WLAN_EID_SSID || 759469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos + 2 + pos[1] > end) { 760469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 761469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " 762469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "from %pM\n", 76347846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->sa); 764469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 765469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 766469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 767469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[1] != 0 && 768469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (pos[1] != ifibss->ssid_len || 7690da780c269957783d341fc3559e6b4c9912af7b4Benoit Papillault memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) { 770469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Ignore ProbeReq for foreign SSID */ 771469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 772469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 773469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 774469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Reply with ProbeResp */ 77540b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg skb = skb_copy(presp, GFP_KERNEL); 776469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!skb) 777469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 778469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 779469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg resp = (struct ieee80211_mgmt *) skb->data; 780469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(resp->da, mgmt->sa, ETH_ALEN); 781469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 782469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Sending ProbeResp to %pM\n", 78347846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, resp->da); 784469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 78562ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 78662ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg ieee80211_tx_skb(sdata, skb); 787469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 788469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 789469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, 790469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 791469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 792469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 793469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 794469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 795469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 796469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 79747846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN)) 798469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; /* ignore ProbeResp to foreign address */ 799469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 800469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 801469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 802469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 803469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 804469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 805469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg &elems); 806469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 807469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); 808469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 809469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 810469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, 811469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 812469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 813469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 814469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 815469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 816469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 817469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 818469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Process beacon from the current BSS */ 819469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; 820469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 821469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 822469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 823469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); 824469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 825469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); 826469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 827469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8281fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 8291fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct sk_buff *skb) 830469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 831469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status; 832469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 833469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 fc; 834469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 835f1d58c2521eb160178b2151d6326d8dc5d7c8560Johannes Berg rx_status = IEEE80211_SKB_RXCB(skb); 836469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt = (struct ieee80211_mgmt *) skb->data; 837469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg fc = le16_to_cpu(mgmt->frame_control); 838469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8397a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 8407a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 841c926d006c1514cfb3572893f41f2324e96823661Tim Harvey if (!sdata->u.ibss.ssid_len) 842c926d006c1514cfb3572893f41f2324e96823661Tim Harvey goto mgmt_out; /* not ready to merge yet */ 843c926d006c1514cfb3572893f41f2324e96823661Tim Harvey 844469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (fc & IEEE80211_FCTL_STYPE) { 845469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_REQ: 846c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg ieee80211_rx_mgmt_probe_req(sdata, skb); 847469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 848469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_RESP: 849469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, 850469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 851469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 852469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_BEACON: 853469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, 854469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 855469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 856469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_AUTH: 857469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_auth_ibss(sdata, mgmt, skb->len); 858469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 859469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 8607a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 861c926d006c1514cfb3572893f41f2324e96823661Tim Harvey mgmt_out: 8627a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 863469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 864469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8651fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata) 866469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 8671fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 868469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8697a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&ifibss->mtx); 8707a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 8717a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg /* 8727a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * Work could be scheduled after scan or similar 8737a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * when we aren't even joined (or trying) with a 8747a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * network. 8757a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg */ 8767a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!ifibss->ssid_len) 8777a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg goto out; 878469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 879469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (ifibss->state) { 880469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_SEARCH: 881469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_find_ibss(sdata); 882469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 883469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_JOINED: 884469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_merge_ibss(sdata); 885469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 886469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg default: 887469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg WARN_ON(1); 888469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 889469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 890469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8917a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg out: 8927a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&ifibss->mtx); 8933a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg} 8943a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg 895469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_ibss_timer(unsigned long data) 896469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 897469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_sub_if_data *sdata = 898469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (struct ieee80211_sub_if_data *) data; 899469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 900469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 901469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9025bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (local->quiescing) { 9035bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 9045bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg return; 9055bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 9065bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 9077a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 908469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 909469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9105bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#ifdef CONFIG_PM 9115bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata) 9125bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 9135bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 9145bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 9155bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (del_timer_sync(&ifibss->timer)) 9165bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 9175bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 9185bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 9195bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata) 9205bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 9215bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 9225bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 9235bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (ifibss->timer_running) { 9245bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg add_timer(&ifibss->timer); 9255bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = false; 9265bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 9275bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 9285bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#endif 9295bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 930469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata) 931469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 932469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 933469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 934469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg setup_timer(&ifibss->timer, ieee80211_ibss_timer, 935469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long) sdata); 9367a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_init(&ifibss->mtx); 937469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 938469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 939469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* scan finished notification */ 940469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local) 941469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 942af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_sub_if_data *sdata; 943469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 94429b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_lock(&local->iflist_mtx); 94529b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 9469607e6b66a0d25ca63b70d54a4283fa13d8f7c9dJohannes Berg if (!ieee80211_sdata_running(sdata)) 9470e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg continue; 948af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_ADHOC) 949af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg continue; 950af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.last_scan_completed = jiffies; 9517a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 952469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 95329b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_unlock(&local->iflist_mtx); 954469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 955469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 956af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 957af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct cfg80211_ibss_params *params) 958af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 959af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 960ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich u32 changed = 0; 961af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 9627a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom + 96313c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(struct ieee80211_hdr_3addr) + 96413c40c54682ffe62977f670681268a26d500d6faAlexander Simon 12 /* struct ieee80211_mgmt.u.beacon */ + 96513c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + IEEE80211_MAX_SSID_LEN /* max SSID */ + 96613c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + 8 /* max Supported Rates */ + 96713c40c54682ffe62977f670681268a26d500d6faAlexander Simon 3 /* max DS params */ + 96813c40c54682ffe62977f670681268a26d500d6faAlexander Simon 4 /* IBSS params */ + 96913c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + (IEEE80211_MAX_SUPP_RATES - 8) + 97013c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + sizeof(struct ieee80211_ht_cap) + 97113c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + sizeof(struct ieee80211_ht_info) + 9727a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg params->ie_len); 9737a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!skb) 9747a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg return -ENOMEM; 9757a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 9767a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 9777a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 978af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->bssid) { 979af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN); 980af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = true; 981af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } else 982af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = false; 983af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 984fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.privacy = params->privacy; 985fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->u.ibss.basic_rates = params->basic_rates; 986dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate, 987dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau sizeof(params->mcast_rate)); 988fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg 98957c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg sdata->vif.bss_conf.beacon_int = params->beacon_interval; 99057c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 991af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.channel = params->channel; 99213c40c54682ffe62977f670681268a26d500d6faAlexander Simon sdata->u.ibss.channel_type = params->channel_type; 993af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_channel = params->channel_fixed; 994af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 995adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg /* fix ourselves to that channel now already */ 996adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg if (params->channel_fixed) { 997adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg sdata->local->oper_channel = params->channel; 99813c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (!ieee80211_set_channel_type(sdata->local, sdata, 999fb03c5eb8c0bbf4561cb5aa72e0a9546e9574661Dan Carpenter params->channel_type)) { 1000fb03c5eb8c0bbf4561cb5aa72e0a9546e9574661Dan Carpenter mutex_unlock(&sdata->u.ibss.mtx); 1001cb71b8d80334add8991862f9fd36dc50874944ceSimon Wunderlich kfree_skb(skb); 100213c40c54682ffe62977f670681268a26d500d6faAlexander Simon return -EINVAL; 1003fb03c5eb8c0bbf4561cb5aa72e0a9546e9574661Dan Carpenter } 1004adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg } 1005adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg 1006af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->ie) { 1007af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len, 1008af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg GFP_KERNEL); 1009af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->u.ibss.ie) 1010af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie_len = params->ie_len; 1011af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 1012af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1013af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.skb = skb; 1014af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 1015af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ibss_join_req = jiffies; 1016af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 10170e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg memcpy(sdata->u.ibss.ssid, params->ssid, IEEE80211_MAX_SSID_LEN); 10180e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg sdata->u.ibss.ssid_len = params->ssid_len; 10190e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg 10207da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->u.ibss.mtx); 10217da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg 10227da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&sdata->local->mtx); 10235cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 10247da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->local->mtx); 10255cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1026ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich /* 1027ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 802.11n-2009 9.13.3.1: In an IBSS, the HT Protection field is 1028ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * reserved, but an HT STA shall protect HT transmissions as though 1029ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * the HT Protection field were set to non-HT mixed mode. 1030ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 1031ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * In an IBSS, the RIFS Mode field of the HT Operation element is 1032ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * also reserved, but an HT STA shall operate as though this field 1033ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * were set to 1. 1034ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich */ 1035ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1036ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich sdata->vif.bss_conf.ht_operation_mode |= 1037ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 1038ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich | IEEE80211_HT_PARAM_RIFS_MODE; 1039ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1040ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich changed |= BSS_CHANGED_HT; 1041ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich ieee80211_bss_info_change_notify(sdata, changed); 1042ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 104364592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&sdata->local->hw, &sdata->work); 1044af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1045af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1046af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1047af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1048af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) 1049af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 1050af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 10515ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 10525ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_local *local = sdata->local; 10535ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct cfg80211_bss *cbss; 10545ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi u16 capability; 10557a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg int active_ibss; 10567a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 10577a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 10585ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 1059f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 1060f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg memset(sdata->u.ibss.bssid, 0, ETH_ALEN); 1061f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg sdata->u.ibss.ssid_len = 0; 1062f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg 10635ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi active_ibss = ieee80211_sta_active_ibss(sdata); 10645ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 10655ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) { 10665ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability = WLAN_CAPABILITY_IBSS; 10675ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 10685ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (ifibss->privacy) 10695ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability |= WLAN_CAPABILITY_PRIVACY; 10705ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 10715ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->channel, 10725ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->bssid, ifibss->ssid, 10735ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->ssid_len, WLAN_CAPABILITY_IBSS | 10745ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi WLAN_CAPABILITY_PRIVACY, 10755ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability); 10765ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 10775ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (cbss) { 10785ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_unlink_bss(local->hw.wiphy, cbss); 10795ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_put_bss(cbss); 10805ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 10815ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 1082af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1083af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sta_info_flush(sdata->local, sdata); 108486a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_off(sdata->dev); 1085af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1086af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* remove beacon */ 1087af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree(sdata->u.ibss.ie); 108840b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg skb = rcu_dereference_protected(sdata->u.ibss.presp, 108940b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg lockdep_is_held(&sdata->u.ibss.mtx)); 1090a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(sdata->u.ibss.presp, NULL); 10918fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 10928fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 10938fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg BSS_CHANGED_IBSS); 1094af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 1095af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree_skb(skb); 1096af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 109735f20c14a103ca2c7062999e934a513b83d84de6Johannes Berg skb_queue_purge(&sdata->skb_queue); 10985cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1099bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg del_timer_sync(&sdata->u.ibss.timer); 11007a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 11017a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 1102bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg 11037da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&local->mtx); 11045cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 11057da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&local->mtx); 1106af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1107af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1108af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1109