ibss.c revision 59eb21a6504731fc16db4cf9463065dd61093e08
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) 344a332a385a86e31bfe181d969a8cb5579798fe03Alina Friedrichsen#define IEEE80211_IBSS_MERGE_DELAY 0x400000 35469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) 36469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 37469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_MAX_STA_ENTRIES 128 38469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 39469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 40469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, 41469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 42469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len) 43469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 44469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 auth_alg, auth_transaction, status_code; 45469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 467a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 477a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 48469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (len < 24 + 6) 49469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 50469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 51469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); 52469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); 53469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg status_code = le16_to_cpu(mgmt->u.auth.status_code); 54469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 55469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* 56469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * IEEE 802.11 standard does not require authentication in IBSS 57469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * networks and most implementations do not seem to use it. 58469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * However, try to reply to authentication attempts if someone 59469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * has actually implemented this. 60469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 61469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) 62469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, NULL, 0, 63fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.bssid, NULL, 0, 0); 64469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 65469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 66af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 67af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg const u8 *bssid, const int beacon_int, 68af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan, 69b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg const u32 basic_rates, 70af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg const u16 capability, u64 tsf) 71469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 72469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 73469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 74b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rates, i; 75469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 76469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 77469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos; 78469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_supported_band *sband; 79f446d10f214091408b7300f15c9adf60569edf28Johannes Berg struct cfg80211_bss *bss; 8057c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg u32 bss_change; 81b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 822448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg 837a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 847a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 852448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* Reset own TSF to allow time synchronization work. */ 862448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg drv_reset_tsf(local); 87469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 88af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb = ifibss->skb; 89af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg rcu_assign_pointer(ifibss->presp, NULL); 90af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 91af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb->data = skb->head; 92af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb->len = 0; 93af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb_reset_tail_pointer(skb); 94af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb_reserve(skb, sdata->local->hw.extra_tx_headroom); 95469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 96af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (memcmp(ifibss->bssid, bssid, ETH_ALEN)) 97af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sta_info_flush(sdata->local, sdata); 98469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9949b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg /* if merging, indicate to driver that we leave the old IBSS */ 10049b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg if (sdata->vif.bss_conf.ibss_joined) { 10149b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 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 109af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg local->oper_channel = chan; 1100aaffa9b9699894aab3266195a529baf9f96ac29Johannes Berg WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT)); 111af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 11257c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 113af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sband = local->hw.wiphy->bands[chan->band]; 114469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 115b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg /* build supported rates array */ 116b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg pos = supp_rates; 117b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < sband->n_bitrates; i++) { 118b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = sband->bitrates[i].bitrate; 119b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 basic = 0; 120b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (basic_rates & BIT(i)) 121b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic = 0x80; 122b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg *pos++ = basic | (u8) (rate / 5); 123b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 124b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 125469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Build IBSS probe response */ 126af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mgmt = (void *) skb_put(skb, 24 + sizeof(mgmt->u.beacon)); 127469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); 128469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 129469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_STYPE_PROBE_RESP); 130469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memset(mgmt->da, 0xff, ETH_ALEN); 13147846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 132469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 13357c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_int); 134707c1b4e68a2811ff2c9e75750a98a3310789a2dSujith mgmt->u.beacon.timestamp = cpu_to_le64(tsf); 135469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->u.beacon.capab_info = cpu_to_le16(capability); 136469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 137469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + ifibss->ssid_len); 138469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SSID; 139469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = ifibss->ssid_len; 140469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, ifibss->ssid, ifibss->ssid_len); 141469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 142b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates; 143469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rates > 8) 144469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rates = 8; 145469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 146469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SUPP_RATES; 147469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 148469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, supp_rates, rates); 149469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 150469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sband->band == IEEE80211_BAND_2GHZ) { 151469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 1); 152469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_DS_PARAMS; 153469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 1; 154af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg *pos++ = ieee80211_frequency_to_channel(chan->center_freq); 155469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 156469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 157469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 2); 158469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_IBSS_PARAMS; 159469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 2; 160469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* FIX: set ATIM window based on scan results */ 161469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 162469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 163469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 164b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->n_bitrates > 8) { 165b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates - 8; 166469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 167469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 168469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 169469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, &supp_rates[8], rates); 170469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 171469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 172af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->ie_len) 173af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(skb_put(skb, ifibss->ie_len), 174af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ifibss->ie, ifibss->ie_len); 175af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1769eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (local->hw.queues >= 4) { 1779eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf pos = skb_put(skb, 9); 1789eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = WLAN_EID_VENDOR_SPECIFIC; 1799eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 7; /* len */ 1809eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ 1819eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x50; 1829eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0xf2; 1839eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 2; /* WME */ 1849eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* WME info */ 1859eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 1; /* WME ver */ 1869eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* U-APSD no in use */ 1879eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 1889eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 189af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg rcu_assign_pointer(ifibss->presp, skb); 190469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1912d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg sdata->vif.bss_conf.beacon_int = beacon_int; 192fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->vif.bss_conf.basic_rates = basic_rates; 1932d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change = BSS_CHANGED_BEACON_INT; 1942d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= ieee80211_reset_erp_info(sdata); 1952d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BSSID; 1962d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON; 1972d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON_ENABLED; 198392cfdb10dab6c7dfa5fed18d8a44d7453d42196Teemu Paasikivi bss_change |= BSS_CHANGED_BASIC_RATES; 1998fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg bss_change |= BSS_CHANGED_IBSS; 2008fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = true; 2012d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg ieee80211_bss_info_change_notify(sdata, bss_change); 202469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 203b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg ieee80211_sta_def_wmm_params(sdata, sband->n_bitrates, supp_rates); 204469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 205469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ifibss->state = IEEE80211_IBSS_MLME_JOINED; 206af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 207af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 208469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 209f446d10f214091408b7300f15c9adf60569edf28Johannes Berg bss = cfg80211_inform_bss_frame(local->hw.wiphy, local->hw.conf.channel, 210f446d10f214091408b7300f15c9adf60569edf28Johannes Berg mgmt, skb->len, 0, GFP_KERNEL); 211f446d10f214091408b7300f15c9adf60569edf28Johannes Berg cfg80211_put_bss(bss); 212af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL); 213469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 214469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 215af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 216af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_bss *bss) 217469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 2180c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss = 2190c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg container_of((void *)bss, struct cfg80211_bss, priv); 220b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg struct ieee80211_supported_band *sband; 221b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u32 basic_rates; 222b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int i, j; 2230c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg u16 beacon_int = cbss->beacon_interval; 22457c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2257a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 2267a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 22757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg if (beacon_int < 10) 22857c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int = 10; 22957c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2300c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sband = sdata->local->hw.wiphy->bands[cbss->channel->band]; 231b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 232b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates = 0; 233b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 234b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < bss->supp_rates_len; i++) { 235b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = (bss->supp_rates[i] & 0x7f) * 5; 236b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg bool is_basic = !!(bss->supp_rates[i] & 0x80); 237b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 238b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (j = 0; j < sband->n_bitrates; j++) { 239b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->bitrates[j].bitrate == rate) { 240b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (is_basic) 241b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates |= BIT(j); 242b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg break; 243b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 244b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 245b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 246b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 2470c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg __ieee80211_sta_join_ibss(sdata, cbss->bssid, 24857c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int, 2490c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->channel, 250b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates, 2510c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->capability, 2520c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->tsf); 253469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 254469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 255469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, 256469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 257469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 258469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status, 259469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems *elems, 260469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bool beacon) 261469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 262469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 263469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int freq; 2640c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 265469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_bss *bss; 266469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 267469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_channel *channel; 268469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u64 beacon_timestamp, rx_timestamp; 269469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u32 supp_rates = 0; 270469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg enum ieee80211_band band = rx_status->band; 271469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 272469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ds_params && elems->ds_params_len == 1) 27359eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf freq = ieee80211_channel_to_frequency(elems->ds_params[0], 27459eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf band); 275469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 276469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg freq = rx_status->freq; 277469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 278469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel = ieee80211_get_channel(local->hw.wiphy, freq); 279469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 280469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 281469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 282469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 2839eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sdata->vif.type == NL80211_IFTYPE_ADHOC && 284469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) { 285469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 286469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 287abe60632f311d515b082b450504ee24006023951Johannes Berg sta = sta_info_get(sdata, mgmt->sa); 288469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 2899eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (elems->supp_rates) { 2909eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, 2919eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf band); 2929eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta) { 2939eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf u32 prev_rates; 2949eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 2959eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates = sta->sta.supp_rates[band]; 2969eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf /* make sure mandatory rates are always added */ 2979eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band] = supp_rates | 2989eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf ieee80211_mandatory_rates(local, band); 299469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 3009eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta->sta.supp_rates[band] != prev_rates) { 301469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 3029eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf printk(KERN_DEBUG 3039eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "%s: updated supp_rates set " 3049eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "for %pM based on beacon" 3059eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "/probe_resp (0x%x -> 0x%x)\n", 3069eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sdata->name, sta->sta.addr, 3079eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates, 3089eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band]); 309469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 3109eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf rate_control_rate_init(sta); 3119eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 3129eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } else 3139eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, 3149eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf mgmt->sa, supp_rates, 3159eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf GFP_ATOMIC); 31634e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg } 3179eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 3189eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta && elems->wmm_info) 3199eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf set_sta_flags(sta, WLAN_STA_WME); 3209eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 3219eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf rcu_read_unlock(); 322469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 323469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 324469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, 325469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel, beacon); 326469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!bss) 327469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 328469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 3290c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = container_of((void *)bss, struct cfg80211_bss, priv); 3300c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 331469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* was just updated in ieee80211_bss_info_update */ 3320c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg beacon_timestamp = cbss->tsf; 333469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 334469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* check if we need to merge IBSS */ 335469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 336469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* we use a fixed BSSID */ 337a98bfec2985221d8e0904a526cbe88590eaad2a6Benoit Papillault if (sdata->u.ibss.fixed_bssid) 338469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 339469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 340469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* not an IBSS */ 3410c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (!(cbss->capability & WLAN_CAPABILITY_IBSS)) 342469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 343469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 344469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different channel */ 3450c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss->channel != local->oper_channel) 346469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 347469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 348469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different SSID */ 349469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ssid_len != sdata->u.ibss.ssid_len || 350469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(elems->ssid, sdata->u.ibss.ssid, 351469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->u.ibss.ssid_len)) 352469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 353469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 35434e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen /* same BSSID */ 3550c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (memcmp(cbss->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) 35634e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen goto put_bss; 35734e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen 358469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rx_status->flag & RX_FLAG_TSFT) { 359469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* 360469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * For correct IBSS merging we need mactime; since mactime is 361469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * defined as the time the first data symbol of the frame hits 362469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * the PHY, and the timestamp of the beacon is defined as "the 363469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * time that the data symbol containing the first bit of the 364469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * timestamp is transmitted to the PHY plus the transmitting 365469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * STA's delays through its local PHY from the MAC-PHY 366469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * interface to its interface with the WM" (802.11 11.1.2) 367469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * - equals the time this bit arrives at the receiver - we have 368469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * to take into account the offset between the two. 369469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * 370469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * E.g. at 1 MBit that means mactime is 192 usec earlier 371469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * (=24 bytes * 8 usecs/byte) than the beacon timestamp. 372469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 373469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int rate; 374469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 375469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rx_status->flag & RX_FLAG_HT) 376469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate = 65; /* TODO: HT rates */ 377469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 378469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate = local->hw.wiphy->bands[band]-> 379469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bitrates[rx_status->rate_idx].bitrate; 380469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 381469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); 3822448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } else { 3832448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* 3842448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * second best option: get current TSF 3852448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * (will return -1 if not supported) 3862448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg */ 3872448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg rx_timestamp = drv_get_tsf(local); 3882448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } 389469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 390469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 391469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "RX beacon SA=%pM BSSID=" 392469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", 393469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->sa, mgmt->bssid, 394469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)rx_timestamp, 395469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)beacon_timestamp, 396469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)(rx_timestamp - beacon_timestamp), 397469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies); 398469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 399469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4004a332a385a86e31bfe181d969a8cb5579798fe03Alina Friedrichsen /* give slow hardware some time to do the TSF sync */ 4014a332a385a86e31bfe181d969a8cb5579798fe03Alina Friedrichsen if (rx_timestamp < IEEE80211_IBSS_MERGE_DELAY) 4024a332a385a86e31bfe181d969a8cb5579798fe03Alina Friedrichsen goto put_bss; 4034a332a385a86e31bfe181d969a8cb5579798fe03Alina Friedrichsen 404469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (beacon_timestamp > rx_timestamp) { 405469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 406469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: beacon TSF higher than " 407469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "local TSF - IBSS merge with BSSID %pM\n", 40847846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->bssid); 409469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 410469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_join_ibss(sdata, bss); 41109a08cff3d13315c948e6aee5cf912f8f1db54e7Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, band); 41234e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 41334e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg supp_rates, GFP_KERNEL); 414469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 415469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 416469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg put_bss: 417469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 418469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 419469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 420469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* 421469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * Add a new IBSS station, will also be called by the RX code when, 422469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * in IBSS mode, receiving a frame from a yet-unknown station, hence 423469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * must be callable in atomic context. 424469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 425469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstruct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 42634e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg u8 *bssid,u8 *addr, u32 supp_rates, 42734e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg gfp_t gfp) 428469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 4292e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 430469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 431469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 432469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int band = local->hw.conf.channel->band; 433469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 434af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* 435af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * XXX: Consider removing the least recently used entry and 436af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * allow new one to be added. 437af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg */ 438469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 439af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (net_ratelimit()) 440af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg printk(KERN_DEBUG "%s: No room for a new IBSS STA entry %pM\n", 44147846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, addr); 442469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return NULL; 443469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 444469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4452e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) 4462e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau return NULL; 4472e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau 448469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (compare_ether_addr(bssid, sdata->u.ibss.bssid)) 449469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return NULL; 450469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 451469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_VERBOSE_DEBUG 4520fb9a9ec27718fbf7fa3153bc94becefb716ceebJoe Perches wiphy_debug(local->hw.wiphy, "Adding new IBSS station %pM (dev=%s)\n", 4530fb9a9ec27718fbf7fa3153bc94becefb716ceebJoe Perches addr, sdata->name); 454469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 455469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 45634e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg sta = sta_info_alloc(sdata, addr, gfp); 457469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!sta) 458469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return NULL; 459469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 460c8716d9dc13c7f6ee92f2bfc6cc3b723b417bff8Rajkumar Manoharan sta->last_rx = jiffies; 461469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg set_sta_flags(sta, WLAN_STA_AUTHORIZED); 462469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 463469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* make sure mandatory rates are always added */ 464469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sta->sta.supp_rates[band] = supp_rates | 465469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_mandatory_rates(local, band); 466469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 467469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate_control_rate_init(sta); 468469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 46934e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg /* If it fails, maybe we raced another insertion? */ 470469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta_info_insert(sta)) 47134e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg return sta_info_get(sdata, addr); 472469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return sta; 473469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 474469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 475469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) 476469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 477469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 478469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active = 0; 479469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 480469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4817a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 4827a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 483469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 484469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 485469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg list_for_each_entry_rcu(sta, &local->sta_list, list) { 486469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta->sdata == sdata && 487469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, 488469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies)) { 489469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active++; 490469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 491469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 492469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 493469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 494469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_unlock(); 495469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 496469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return active; 497469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 498469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 499ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 500ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_JOINED 501ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 502469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 503469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) 504469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 505469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 506469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5077a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 5087a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 509af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 510af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 511469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 512469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); 513af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 514450aae3d7b60a970f266349a837dfb30a539198bSujith if (time_before(jiffies, ifibss->last_scan_completed + 515450aae3d7b60a970f266349a837dfb30a539198bSujith IEEE80211_IBSS_MERGE_INTERVAL)) 516450aae3d7b60a970f266349a837dfb30a539198bSujith return; 517450aae3d7b60a970f266349a837dfb30a539198bSujith 518469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ieee80211_sta_active_ibss(sdata)) 519469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 520469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 521af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 522469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 523469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 524469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " 52547846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg "IBSS networks with same SSID (merge)\n", sdata->name); 526469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 527be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 528be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->ssid, ifibss->ssid_len, 529be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->fixed_channel ? ifibss->channel : NULL); 530469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 531469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 532af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) 533469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 534469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 535469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 536469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_supported_band *sband; 537469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 bssid[ETH_ALEN]; 538469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 capability; 539469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int i; 540469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5417a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 5427a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 543af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) { 544469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(bssid, ifibss->bssid, ETH_ALEN); 545469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } else { 546469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Generate random, not broadcast, locally administered BSSID. Mix in 547469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * own MAC address to make sure that devices that do not have proper 548469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * random number generator get different BSSID. */ 549469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg get_random_bytes(bssid, ETH_ALEN); 550469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg for (i = 0; i < ETH_ALEN; i++) 55147846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg bssid[i] ^= sdata->vif.addr[i]; 552469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] &= ~0x01; 553469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] |= 0x02; 554469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 555469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 556469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n", 55747846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, bssid); 558469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 559af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sband = local->hw.wiphy->bands[ifibss->channel->band]; 560469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 561469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability = WLAN_CAPABILITY_IBSS; 562469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 563fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 564469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 565469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 566469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->drop_unencrypted = 0; 567469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 56857c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int, 569fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi ifibss->channel, ifibss->basic_rates, 570b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg capability, 0); 571469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 572469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 573ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 574ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_SEARCH 575ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 576ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault 577af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) 578469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 579469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 580469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 5810c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 582af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan = NULL; 583469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg const u8 *bssid = NULL; 584469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active_ibss; 585e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg u16 capability; 586469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5877a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 5887a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 589469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active_ibss = ieee80211_sta_active_ibss(sdata); 590469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 591469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", 59247846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, active_ibss); 593469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 594469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 595469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (active_ibss) 596af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 597469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 598e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability = WLAN_CAPABILITY_IBSS; 599fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 600e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 601af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) 602af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg bssid = ifibss->bssid; 603af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 604af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg chan = ifibss->channel; 605af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!is_zero_ether_addr(ifibss->bssid)) 606469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid = ifibss->bssid; 6070c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid, 6080c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg ifibss->ssid, ifibss->ssid_len, 6090c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY, 6100c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg capability); 6110c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 6120c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss) { 6130c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct ieee80211_bss *bss; 614469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6150c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg bss = (void *)cbss->priv; 616469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 617469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG " sta_find_ibss: selected %pM current " 6180c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg "%pM\n", cbss->bssid, ifibss->bssid); 619469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 620469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 621469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM" 622469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg " based on configured SSID\n", 6230c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sdata->name, cbss->bssid); 624469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 625af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_join_ibss(sdata, bss); 626469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 627af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 628d419b9f0fa69e79ccba3e5e79a58a52ae0c2ed6aReinette Chatre } 629469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 630469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 631469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG " did not try to join ibss\n"); 632469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 633469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 634469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Selected IBSS not found in current scan results - try to scan */ 635ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault if (time_after(jiffies, ifibss->last_scan_completed + 636469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_SCAN_INTERVAL)) { 637469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " 63847846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg "join\n", sdata->name); 639469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 640be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 641be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->ssid, ifibss->ssid_len, 642be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->fixed_channel ? ifibss->channel : NULL); 643ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault } else { 644469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int interval = IEEE80211_SCAN_INTERVAL; 645469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 646469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (time_after(jiffies, ifibss->ibss_join_req + 647469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_IBSS_JOIN_TIMEOUT)) { 648af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!(local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS)) { 649af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_create_ibss(sdata); 650af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 651af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 652469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: IBSS not allowed on" 65347846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg " %d MHz\n", sdata->name, 654469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg local->hw.conf.channel->center_freq); 655469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 656469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* No IBSS found - decrease scan interval and continue 657469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * scanning. */ 658469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg interval = IEEE80211_SCAN_INTERVAL_SLOW; 659469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 660469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 661af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 662af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + interval)); 663469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 664469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 665469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 666469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, 667469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 668469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len) 669469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 670469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 671469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 672469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int tx_last_beacon; 673469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 674469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *resp; 675469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos, *end; 676469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6777a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 6787a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 679469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ifibss->state != IEEE80211_IBSS_MLME_JOINED || 680af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg len < 24 + 2 || !ifibss->presp) 681469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 682469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6832448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg tx_last_beacon = drv_tx_last_beacon(local); 684469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 685469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 686469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: RX ProbeReq SA=%pM DA=%pM BSSID=%pM" 687469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg " (tx_last_beacon=%d)\n", 68847846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->sa, mgmt->da, 689469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->bssid, tx_last_beacon); 690469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 691469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 692469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!tx_last_beacon) 693469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 694469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 695469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (memcmp(mgmt->bssid, ifibss->bssid, ETH_ALEN) != 0 && 696469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) 697469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 698469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 699469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg end = ((u8 *) mgmt) + len; 700469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = mgmt->u.probe_req.variable; 701469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[0] != WLAN_EID_SSID || 702469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos + 2 + pos[1] > end) { 703469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 704469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " 705469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "from %pM\n", 70647846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->sa); 707469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 708469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 709469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 710469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[1] != 0 && 711469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (pos[1] != ifibss->ssid_len || 7120da780c269957783d341fc3559e6b4c9912af7b4Benoit Papillault memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) { 713469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Ignore ProbeReq for foreign SSID */ 714469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 715469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 716469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 717469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Reply with ProbeResp */ 718af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb = skb_copy(ifibss->presp, GFP_KERNEL); 719469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!skb) 720469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 721469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 722469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg resp = (struct ieee80211_mgmt *) skb->data; 723469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(resp->da, mgmt->sa, ETH_ALEN); 724469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 725469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Sending ProbeResp to %pM\n", 72647846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, resp->da); 727469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 72862ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 72962ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg ieee80211_tx_skb(sdata, skb); 730469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 731469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 732469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, 733469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 734469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 735469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 736469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 737469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 738469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 739469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 74047846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN)) 741469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; /* ignore ProbeResp to foreign address */ 742469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 743469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 744469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 745469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 746469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 747469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 748469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg &elems); 749469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 750469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); 751469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 752469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 753469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, 754469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 755469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 756469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 757469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 758469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 759469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 760469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 761469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Process beacon from the current BSS */ 762469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; 763469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 764469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 765469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 766469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); 767469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 768469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); 769469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 770469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7711fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 7721fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct sk_buff *skb) 773469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 774469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status; 775469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 776469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 fc; 777469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 778f1d58c2521eb160178b2151d6326d8dc5d7c8560Johannes Berg rx_status = IEEE80211_SKB_RXCB(skb); 779469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt = (struct ieee80211_mgmt *) skb->data; 780469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg fc = le16_to_cpu(mgmt->frame_control); 781469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7827a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 7837a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 784c926d006c1514cfb3572893f41f2324e96823661Tim Harvey if (!sdata->u.ibss.ssid_len) 785c926d006c1514cfb3572893f41f2324e96823661Tim Harvey goto mgmt_out; /* not ready to merge yet */ 786c926d006c1514cfb3572893f41f2324e96823661Tim Harvey 787469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (fc & IEEE80211_FCTL_STYPE) { 788469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_REQ: 789469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_probe_req(sdata, mgmt, skb->len); 790469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 791469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_RESP: 792469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, 793469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 794469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 795469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_BEACON: 796469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, 797469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 798469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 799469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_AUTH: 800469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_auth_ibss(sdata, mgmt, skb->len); 801469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 802469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 8037a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 804c926d006c1514cfb3572893f41f2324e96823661Tim Harvey mgmt_out: 8057a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 806469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 807469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8081fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata) 809469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 8101fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 811469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8127a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&ifibss->mtx); 8137a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 8147a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg /* 8157a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * Work could be scheduled after scan or similar 8167a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * when we aren't even joined (or trying) with a 8177a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * network. 8187a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg */ 8197a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!ifibss->ssid_len) 8207a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg goto out; 821469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 822469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (ifibss->state) { 823469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_SEARCH: 824469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_find_ibss(sdata); 825469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 826469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_JOINED: 827469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_merge_ibss(sdata); 828469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 829469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg default: 830469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg WARN_ON(1); 831469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 832469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 833469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8347a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg out: 8357a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&ifibss->mtx); 8363a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg} 8373a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg 838469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_ibss_timer(unsigned long data) 839469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 840469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_sub_if_data *sdata = 841469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (struct ieee80211_sub_if_data *) data; 842469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 843469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 844469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8455bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (local->quiescing) { 8465bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 8475bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg return; 8485bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 8495bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 8507a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 851469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 852469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8535bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#ifdef CONFIG_PM 8545bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata) 8555bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 8565bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 8575bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 8585bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (del_timer_sync(&ifibss->timer)) 8595bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 8605bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 8615bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 8625bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata) 8635bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 8645bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 8655bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 8665bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (ifibss->timer_running) { 8675bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg add_timer(&ifibss->timer); 8685bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = false; 8695bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 8705bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 8715bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#endif 8725bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 873469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata) 874469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 875469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 876469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 877469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg setup_timer(&ifibss->timer, ieee80211_ibss_timer, 878469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long) sdata); 8797a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_init(&ifibss->mtx); 880469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 881469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 882469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* scan finished notification */ 883469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local) 884469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 885af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_sub_if_data *sdata; 886469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 88729b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_lock(&local->iflist_mtx); 88829b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 8899607e6b66a0d25ca63b70d54a4283fa13d8f7c9dJohannes Berg if (!ieee80211_sdata_running(sdata)) 8900e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg continue; 891af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_ADHOC) 892af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg continue; 893af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.last_scan_completed = jiffies; 8947a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 895469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 89629b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_unlock(&local->iflist_mtx); 897469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 898469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 899af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 900af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct cfg80211_ibss_params *params) 901af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 902af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 903af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 9047a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom + 9057a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 36 /* bitrates */ + 9067a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 34 /* SSID */ + 9077a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 3 /* DS params */ + 9087a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 4 /* IBSS params */ + 9097a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg params->ie_len); 9107a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!skb) 9117a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg return -ENOMEM; 9127a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 9137a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 9147a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 915af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->bssid) { 916af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN); 917af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = true; 918af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } else 919af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = false; 920af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 921fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.privacy = params->privacy; 922fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->u.ibss.basic_rates = params->basic_rates; 923dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate, 924dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau sizeof(params->mcast_rate)); 925fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg 92657c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg sdata->vif.bss_conf.beacon_int = params->beacon_interval; 92757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 928af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.channel = params->channel; 929af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_channel = params->channel_fixed; 930af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 931adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg /* fix ourselves to that channel now already */ 932adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg if (params->channel_fixed) { 933adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg sdata->local->oper_channel = params->channel; 9340aaffa9b9699894aab3266195a529baf9f96ac29Johannes Berg WARN_ON(!ieee80211_set_channel_type(sdata->local, sdata, 9350aaffa9b9699894aab3266195a529baf9f96ac29Johannes Berg NL80211_CHAN_NO_HT)); 936adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg } 937adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg 938af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->ie) { 939af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len, 940af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg GFP_KERNEL); 941af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->u.ibss.ie) 942af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie_len = params->ie_len; 943af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 944af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 945af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.skb = skb; 946af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 947af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ibss_join_req = jiffies; 948af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 9490e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg memcpy(sdata->u.ibss.ssid, params->ssid, IEEE80211_MAX_SSID_LEN); 9500e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg sdata->u.ibss.ssid_len = params->ssid_len; 9510e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg 9527da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->u.ibss.mtx); 9537da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg 9547da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&sdata->local->mtx); 9555cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 9567da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->local->mtx); 9575cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 95864592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&sdata->local->hw, &sdata->work); 959af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 960af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 961af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 962af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 963af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) 964af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 965af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 9665ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 9675ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_local *local = sdata->local; 9685ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct cfg80211_bss *cbss; 9695ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi u16 capability; 9707a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg int active_ibss; 9717a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 9727a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 9735ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9745ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi active_ibss = ieee80211_sta_active_ibss(sdata); 9755ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9765ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) { 9775ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability = WLAN_CAPABILITY_IBSS; 9785ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9795ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (ifibss->privacy) 9805ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability |= WLAN_CAPABILITY_PRIVACY; 9815ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9825ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->channel, 9835ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->bssid, ifibss->ssid, 9845ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->ssid_len, WLAN_CAPABILITY_IBSS | 9855ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi WLAN_CAPABILITY_PRIVACY, 9865ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability); 9875ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9885ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (cbss) { 9895ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_unlink_bss(local->hw.wiphy, cbss); 9905ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_put_bss(cbss); 9915ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 9925ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 993af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 994af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sta_info_flush(sdata->local, sdata); 995af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 996af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* remove beacon */ 997af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree(sdata->u.ibss.ie); 998af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb = sdata->u.ibss.presp; 999af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg rcu_assign_pointer(sdata->u.ibss.presp, NULL); 10008fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 10018fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 10028fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg BSS_CHANGED_IBSS); 1003af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 1004af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree_skb(skb); 1005af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 100635f20c14a103ca2c7062999e934a513b83d84de6Johannes Berg skb_queue_purge(&sdata->skb_queue); 1007af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memset(sdata->u.ibss.bssid, 0, ETH_ALEN); 10085cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg sdata->u.ibss.ssid_len = 0; 10095cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1010bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg del_timer_sync(&sdata->u.ibss.timer); 10117a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 10127a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 1013bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg 10147da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&local->mtx); 10155cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 10167da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&local->mtx); 1017af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1018af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1019af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1020