ibss.c revision 1ed76487ce115110171480deabd3cd4656f9803e
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{ 43469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 auth_alg, auth_transaction, status_code; 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 status_code = le16_to_cpu(mgmt->u.auth.status_code); 53469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 54469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* 55469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * IEEE 802.11 standard does not require authentication in IBSS 56469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * networks and most implementations do not seem to use it. 57469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * However, try to reply to authentication attempts if someone 58469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * has actually implemented this. 59469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 60469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (auth_alg == WLAN_AUTH_OPEN && auth_transaction == 1) 61469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, NULL, 0, 62fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.bssid, NULL, 0, 0); 63469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 64469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 65af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 66af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg const u8 *bssid, const int beacon_int, 67af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan, 68b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg const u32 basic_rates, 69af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg const u16 capability, u64 tsf) 70469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 71469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 72469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 73b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rates, i; 74469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 75469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 76469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos; 77469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_supported_band *sband; 78f446d10f214091408b7300f15c9adf60569edf28Johannes Berg struct cfg80211_bss *bss; 7957c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg u32 bss_change; 80b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 812448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg 827a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 837a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 842448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* Reset own TSF to allow time synchronization work. */ 852448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg drv_reset_tsf(local); 86469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 87af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb = ifibss->skb; 88af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg rcu_assign_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; 10149b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IBSS); 10249b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg } 10349b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg 104469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(ifibss->bssid, bssid, ETH_ALEN); 105469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 106af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0; 107469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 108af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg local->oper_channel = chan; 1090aaffa9b9699894aab3266195a529baf9f96ac29Johannes Berg WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT)); 110af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 11157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 112af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sband = local->hw.wiphy->bands[chan->band]; 113469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 114b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg /* build supported rates array */ 115b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg pos = supp_rates; 116b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < sband->n_bitrates; i++) { 117b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = sband->bitrates[i].bitrate; 118b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 basic = 0; 119b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (basic_rates & BIT(i)) 120b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic = 0x80; 121b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg *pos++ = basic | (u8) (rate / 5); 122b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 123b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 124469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Build IBSS probe response */ 125af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mgmt = (void *) skb_put(skb, 24 + sizeof(mgmt->u.beacon)); 126469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); 127469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 128469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_STYPE_PROBE_RESP); 129469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memset(mgmt->da, 0xff, ETH_ALEN); 13047846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 131469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 13257c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_int); 133707c1b4e68a2811ff2c9e75750a98a3310789a2dSujith mgmt->u.beacon.timestamp = cpu_to_le64(tsf); 134469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->u.beacon.capab_info = cpu_to_le16(capability); 135469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 136469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + ifibss->ssid_len); 137469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SSID; 138469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = ifibss->ssid_len; 139469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, ifibss->ssid, ifibss->ssid_len); 140469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 141b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates; 142469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rates > 8) 143469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rates = 8; 144469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 145469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SUPP_RATES; 146469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 147469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, supp_rates, rates); 148469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 149469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sband->band == IEEE80211_BAND_2GHZ) { 150469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 1); 151469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_DS_PARAMS; 152469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 1; 153af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg *pos++ = ieee80211_frequency_to_channel(chan->center_freq); 154469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 155469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 156469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 2); 157469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_IBSS_PARAMS; 158469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 2; 159469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* FIX: set ATIM window based on scan results */ 160469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 161469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 162469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 163b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->n_bitrates > 8) { 164b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates - 8; 165469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 166469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 167469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 168469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, &supp_rates[8], rates); 169469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 170469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 171af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->ie_len) 172af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(skb_put(skb, ifibss->ie_len), 173af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ifibss->ie, ifibss->ie_len); 174af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1759eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (local->hw.queues >= 4) { 1769eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf pos = skb_put(skb, 9); 1779eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = WLAN_EID_VENDOR_SPECIFIC; 1789eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 7; /* len */ 1799eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ 1809eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x50; 1819eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0xf2; 1829eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 2; /* WME */ 1839eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* WME info */ 1849eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 1; /* WME ver */ 1859eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* U-APSD no in use */ 1869eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 1879eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 188af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg rcu_assign_pointer(ifibss->presp, skb); 189469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1902d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg sdata->vif.bss_conf.beacon_int = beacon_int; 191fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->vif.bss_conf.basic_rates = basic_rates; 1922d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change = BSS_CHANGED_BEACON_INT; 1932d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= ieee80211_reset_erp_info(sdata); 1942d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BSSID; 1952d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON; 1962d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON_ENABLED; 197392cfdb10dab6c7dfa5fed18d8a44d7453d42196Teemu Paasikivi bss_change |= BSS_CHANGED_BASIC_RATES; 1988fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg bss_change |= BSS_CHANGED_IBSS; 1998fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = true; 2002d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg ieee80211_bss_info_change_notify(sdata, bss_change); 201469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 202b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg ieee80211_sta_def_wmm_params(sdata, sband->n_bitrates, supp_rates); 203469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 204469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ifibss->state = IEEE80211_IBSS_MLME_JOINED; 205af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 206af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 207469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 208f446d10f214091408b7300f15c9adf60569edf28Johannes Berg bss = cfg80211_inform_bss_frame(local->hw.wiphy, local->hw.conf.channel, 209f446d10f214091408b7300f15c9adf60569edf28Johannes Berg mgmt, skb->len, 0, GFP_KERNEL); 210f446d10f214091408b7300f15c9adf60569edf28Johannes Berg cfg80211_put_bss(bss); 211af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL); 212469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 213469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 214af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 215af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_bss *bss) 216469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 2170c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss = 2180c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg container_of((void *)bss, struct cfg80211_bss, priv); 219b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg struct ieee80211_supported_band *sband; 220b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u32 basic_rates; 221b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int i, j; 2220c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg u16 beacon_int = cbss->beacon_interval; 22357c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2247a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 2257a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 22657c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg if (beacon_int < 10) 22757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int = 10; 22857c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2290c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sband = sdata->local->hw.wiphy->bands[cbss->channel->band]; 230b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 231b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates = 0; 232b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 233b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < bss->supp_rates_len; i++) { 234b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = (bss->supp_rates[i] & 0x7f) * 5; 235b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg bool is_basic = !!(bss->supp_rates[i] & 0x80); 236b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 237b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (j = 0; j < sband->n_bitrates; j++) { 238b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->bitrates[j].bitrate == rate) { 239b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (is_basic) 240b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates |= BIT(j); 241b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg break; 242b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 243b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 244b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 245b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 2460c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg __ieee80211_sta_join_ibss(sdata, cbss->bssid, 24757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int, 2480c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->channel, 249b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates, 2500c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->capability, 2510c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->tsf); 252469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 253469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 254469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, 255469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 256469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 257469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status, 258469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems *elems, 259469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bool beacon) 260469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 261469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 262469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int freq; 2630c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 264469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_bss *bss; 265469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 266469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_channel *channel; 267469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u64 beacon_timestamp, rx_timestamp; 268469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u32 supp_rates = 0; 269469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg enum ieee80211_band band = rx_status->band; 270469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 271469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ds_params && elems->ds_params_len == 1) 27259eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf freq = ieee80211_channel_to_frequency(elems->ds_params[0], 27359eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf band); 274469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 275469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg freq = rx_status->freq; 276469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 277469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel = ieee80211_get_channel(local->hw.wiphy, freq); 278469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 279469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 280469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 281469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 2829eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sdata->vif.type == NL80211_IFTYPE_ADHOC && 283469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) { 284469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 285469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 286abe60632f311d515b082b450504ee24006023951Johannes Berg sta = sta_info_get(sdata, mgmt->sa); 287469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 2889eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (elems->supp_rates) { 2899eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, 2909eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf band); 2919eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta) { 2929eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf u32 prev_rates; 2939eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 2949eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates = sta->sta.supp_rates[band]; 2959eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf /* make sure mandatory rates are always added */ 2969eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band] = supp_rates | 2979eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf ieee80211_mandatory_rates(local, band); 298469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 2999eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta->sta.supp_rates[band] != prev_rates) { 300469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 3019eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf printk(KERN_DEBUG 3029eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "%s: updated supp_rates set " 3039eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "for %pM based on beacon" 3049eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "/probe_resp (0x%x -> 0x%x)\n", 3059eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sdata->name, sta->sta.addr, 3069eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates, 3079eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band]); 308469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 3099eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf rate_control_rate_init(sta); 3109eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 3119eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } else 3129eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, 3139eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf mgmt->sa, supp_rates, 3149eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf GFP_ATOMIC); 31534e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg } 3169eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 3179eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta && elems->wmm_info) 3189eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf set_sta_flags(sta, WLAN_STA_WME); 3199eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 3209eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf rcu_read_unlock(); 321469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 322469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 323469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, 324469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel, beacon); 325469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!bss) 326469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 327469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 3280c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = container_of((void *)bss, struct cfg80211_bss, priv); 3290c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 330469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* was just updated in ieee80211_bss_info_update */ 3310c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg beacon_timestamp = cbss->tsf; 332469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 333469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* check if we need to merge IBSS */ 334469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 335469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* we use a fixed BSSID */ 336a98bfec2985221d8e0904a526cbe88590eaad2a6Benoit Papillault if (sdata->u.ibss.fixed_bssid) 337469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 338469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 339469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* not an IBSS */ 3400c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (!(cbss->capability & WLAN_CAPABILITY_IBSS)) 341469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 342469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 343469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different channel */ 3440c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss->channel != local->oper_channel) 345469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 346469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 347469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different SSID */ 348469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ssid_len != sdata->u.ibss.ssid_len || 349469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(elems->ssid, sdata->u.ibss.ssid, 350469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->u.ibss.ssid_len)) 351469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 352469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 35334e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen /* same BSSID */ 3540c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (memcmp(cbss->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) 35534e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen goto put_bss; 35634e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen 3576ebacbb79d2d05978ba50a24d8cbe2a76ff2014cJohannes Berg if (rx_status->flag & RX_FLAG_MACTIME_MPDU) { 358469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* 359469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * For correct IBSS merging we need mactime; since mactime is 360469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * defined as the time the first data symbol of the frame hits 361469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * the PHY, and the timestamp of the beacon is defined as "the 362469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * time that the data symbol containing the first bit of the 363469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * timestamp is transmitted to the PHY plus the transmitting 364469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * STA's delays through its local PHY from the MAC-PHY 365469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * interface to its interface with the WM" (802.11 11.1.2) 366469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * - equals the time this bit arrives at the receiver - we have 367469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * to take into account the offset between the two. 368469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * 369469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * E.g. at 1 MBit that means mactime is 192 usec earlier 370469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * (=24 bytes * 8 usecs/byte) than the beacon timestamp. 371469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 372469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int rate; 373469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 374469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rx_status->flag & RX_FLAG_HT) 375469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate = 65; /* TODO: HT rates */ 376469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 377469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate = local->hw.wiphy->bands[band]-> 378469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bitrates[rx_status->rate_idx].bitrate; 379469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 380469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); 3812448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } else { 3822448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* 3832448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * second best option: get current TSF 3842448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * (will return -1 if not supported) 3852448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg */ 3862448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg rx_timestamp = drv_get_tsf(local); 3872448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } 388469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 389469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 390469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "RX beacon SA=%pM BSSID=" 391469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", 392469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->sa, mgmt->bssid, 393469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)rx_timestamp, 394469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)beacon_timestamp, 395469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)(rx_timestamp - beacon_timestamp), 396469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies); 397469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 398469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 399469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (beacon_timestamp > rx_timestamp) { 400469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 401469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: beacon TSF higher than " 402469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "local TSF - IBSS merge with BSSID %pM\n", 40347846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->bssid); 404469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 405469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_join_ibss(sdata, bss); 40609a08cff3d13315c948e6aee5cf912f8f1db54e7Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, band); 40734e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 40834e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg supp_rates, GFP_KERNEL); 409469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 410469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 411469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg put_bss: 412469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 413469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 414469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 415469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* 416469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * Add a new IBSS station, will also be called by the RX code when, 417469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * in IBSS mode, receiving a frame from a yet-unknown station, hence 418469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * must be callable in atomic context. 419469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 420469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstruct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 42134e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg u8 *bssid,u8 *addr, u32 supp_rates, 42234e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg gfp_t gfp) 423469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 4242e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 425469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 426469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 427469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int band = local->hw.conf.channel->band; 428469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 429af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* 430af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * XXX: Consider removing the least recently used entry and 431af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * allow new one to be added. 432af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg */ 433469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 434af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (net_ratelimit()) 435af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg printk(KERN_DEBUG "%s: No room for a new IBSS STA entry %pM\n", 43647846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, addr); 437469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return NULL; 438469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 439469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4402e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) 4412e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau return NULL; 4422e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau 443469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (compare_ether_addr(bssid, sdata->u.ibss.bssid)) 444469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return NULL; 445469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 446469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_VERBOSE_DEBUG 4470fb9a9ec27718fbf7fa3153bc94becefb716ceebJoe Perches wiphy_debug(local->hw.wiphy, "Adding new IBSS station %pM (dev=%s)\n", 4480fb9a9ec27718fbf7fa3153bc94becefb716ceebJoe Perches addr, sdata->name); 449469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 450469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 45134e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg sta = sta_info_alloc(sdata, addr, gfp); 452469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!sta) 453469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return NULL; 454469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 455c8716d9dc13c7f6ee92f2bfc6cc3b723b417bff8Rajkumar Manoharan sta->last_rx = jiffies; 456469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg set_sta_flags(sta, WLAN_STA_AUTHORIZED); 457469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 458469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* make sure mandatory rates are always added */ 459469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sta->sta.supp_rates[band] = supp_rates | 460469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_mandatory_rates(local, band); 461469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 462469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate_control_rate_init(sta); 463469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 46434e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg /* If it fails, maybe we raced another insertion? */ 465469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta_info_insert(sta)) 46634e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg return sta_info_get(sdata, addr); 467469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return sta; 468469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 469469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 470469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) 471469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 472469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 473469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active = 0; 474469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 475469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4767a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 4777a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 478469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 479469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 480469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg list_for_each_entry_rcu(sta, &local->sta_list, list) { 481469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta->sdata == sdata && 482469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, 483469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies)) { 484469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active++; 485469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 486469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 487469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 488469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 489469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_unlock(); 490469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 491469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return active; 492469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 493469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 494ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 495ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_JOINED 496ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 497469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 498469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) 499469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 500469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 501469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5027a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 5037a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 504af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 505af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 506469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 507469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); 508af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 509450aae3d7b60a970f266349a837dfb30a539198bSujith if (time_before(jiffies, ifibss->last_scan_completed + 510450aae3d7b60a970f266349a837dfb30a539198bSujith IEEE80211_IBSS_MERGE_INTERVAL)) 511450aae3d7b60a970f266349a837dfb30a539198bSujith return; 512450aae3d7b60a970f266349a837dfb30a539198bSujith 513469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ieee80211_sta_active_ibss(sdata)) 514469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 515469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 516af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 517469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 518469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 519469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " 52047846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg "IBSS networks with same SSID (merge)\n", sdata->name); 521469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 522be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 523be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->ssid, ifibss->ssid_len, 524be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->fixed_channel ? ifibss->channel : NULL); 525469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 526469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 527af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) 528469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 529469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 530469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 531469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_supported_band *sband; 532469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 bssid[ETH_ALEN]; 533469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 capability; 534469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int i; 535469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5367a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 5377a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 538af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) { 539469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(bssid, ifibss->bssid, ETH_ALEN); 540469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } else { 541469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Generate random, not broadcast, locally administered BSSID. Mix in 542469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * own MAC address to make sure that devices that do not have proper 543469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * random number generator get different BSSID. */ 544469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg get_random_bytes(bssid, ETH_ALEN); 545469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg for (i = 0; i < ETH_ALEN; i++) 54647846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg bssid[i] ^= sdata->vif.addr[i]; 547469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] &= ~0x01; 548469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] |= 0x02; 549469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 550469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 551469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n", 55247846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, bssid); 553469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 554af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sband = local->hw.wiphy->bands[ifibss->channel->band]; 555469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 556469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability = WLAN_CAPABILITY_IBSS; 557469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 558fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 559469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 560469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 561469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->drop_unencrypted = 0; 562469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 56357c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int, 564fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi ifibss->channel, ifibss->basic_rates, 565b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg capability, 0); 566469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 567469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 568ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 569ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_SEARCH 570ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 571ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault 572af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) 573469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 574469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 575469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 5760c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 577af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan = NULL; 578469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg const u8 *bssid = NULL; 579469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active_ibss; 580e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg u16 capability; 581469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5827a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 5837a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 584469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active_ibss = ieee80211_sta_active_ibss(sdata); 585469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 586469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", 58747846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, active_ibss); 588469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 589469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 590469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (active_ibss) 591af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 592469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 593e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability = WLAN_CAPABILITY_IBSS; 594fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 595e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 596af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) 597af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg bssid = ifibss->bssid; 598af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 599af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg chan = ifibss->channel; 600af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!is_zero_ether_addr(ifibss->bssid)) 601469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid = ifibss->bssid; 6020c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid, 6030c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg ifibss->ssid, ifibss->ssid_len, 6040c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY, 6050c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg capability); 6060c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 6070c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss) { 6080c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct ieee80211_bss *bss; 609469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6100c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg bss = (void *)cbss->priv; 611469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 612469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG " sta_find_ibss: selected %pM current " 6130c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg "%pM\n", cbss->bssid, ifibss->bssid); 614469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 615469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 616469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM" 617469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg " based on configured SSID\n", 6180c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sdata->name, cbss->bssid); 619469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 620af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_join_ibss(sdata, bss); 621469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 622af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 623d419b9f0fa69e79ccba3e5e79a58a52ae0c2ed6aReinette Chatre } 624469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 625469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 626469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG " did not try to join ibss\n"); 627469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 628469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 629469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Selected IBSS not found in current scan results - try to scan */ 630ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault if (time_after(jiffies, ifibss->last_scan_completed + 631469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_SCAN_INTERVAL)) { 632469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " 63347846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg "join\n", sdata->name); 634469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 635be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 636be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->ssid, ifibss->ssid_len, 637be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->fixed_channel ? ifibss->channel : NULL); 638ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault } else { 639469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int interval = IEEE80211_SCAN_INTERVAL; 640469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 641469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (time_after(jiffies, ifibss->ibss_join_req + 642469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_IBSS_JOIN_TIMEOUT)) { 643af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!(local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS)) { 644af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_create_ibss(sdata); 645af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 646af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 647469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: IBSS not allowed on" 64847846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg " %d MHz\n", sdata->name, 649469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg local->hw.conf.channel->center_freq); 650469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 651469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* No IBSS found - decrease scan interval and continue 652469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * scanning. */ 653469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg interval = IEEE80211_SCAN_INTERVAL_SLOW; 654469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 655469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 656af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 657af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + interval)); 658469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 659469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 660469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 661469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, 662c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct sk_buff *req) 663469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 664c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct ieee80211_mgmt *mgmt = (void *)req->data; 665469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 666469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 667c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg int tx_last_beacon, len = req->len; 668469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 669469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *resp; 670469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos, *end; 671469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6727a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 6737a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 674469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ifibss->state != IEEE80211_IBSS_MLME_JOINED || 675af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg len < 24 + 2 || !ifibss->presp) 676469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 677469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6782448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg tx_last_beacon = drv_tx_last_beacon(local); 679469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 680469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 681469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: RX ProbeReq SA=%pM DA=%pM BSSID=%pM" 682469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg " (tx_last_beacon=%d)\n", 68347846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->sa, mgmt->da, 684469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->bssid, tx_last_beacon); 685469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 686469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6871ed76487ce115110171480deabd3cd4656f9803eFelix Fietkau if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da)) 688469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 689469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 690469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (memcmp(mgmt->bssid, ifibss->bssid, ETH_ALEN) != 0 && 691469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) 692469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 693469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 694469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg end = ((u8 *) mgmt) + len; 695469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = mgmt->u.probe_req.variable; 696469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[0] != WLAN_EID_SSID || 697469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos + 2 + pos[1] > end) { 698469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 699469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " 700469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "from %pM\n", 70147846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->sa); 702469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 703469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 704469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 705469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[1] != 0 && 706469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (pos[1] != ifibss->ssid_len || 7070da780c269957783d341fc3559e6b4c9912af7b4Benoit Papillault memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) { 708469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Ignore ProbeReq for foreign SSID */ 709469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 710469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 711469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 712469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Reply with ProbeResp */ 713af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb = skb_copy(ifibss->presp, GFP_KERNEL); 714469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!skb) 715469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 716469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 717469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg resp = (struct ieee80211_mgmt *) skb->data; 718469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(resp->da, mgmt->sa, ETH_ALEN); 719469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 720469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Sending ProbeResp to %pM\n", 72147846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, resp->da); 722469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 72362ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 72462ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg ieee80211_tx_skb(sdata, skb); 725469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 726469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 727469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, 728469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 729469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 730469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 731469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 732469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 733469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 734469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 73547846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN)) 736469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; /* ignore ProbeResp to foreign address */ 737469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 738469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 739469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 740469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 741469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 742469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 743469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg &elems); 744469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 745469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); 746469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 747469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 748469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, 749469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 750469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 751469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 752469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 753469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 754469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 755469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 756469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Process beacon from the current BSS */ 757469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; 758469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 759469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 760469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 761469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); 762469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 763469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); 764469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 765469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7661fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 7671fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct sk_buff *skb) 768469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 769469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status; 770469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 771469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 fc; 772469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 773f1d58c2521eb160178b2151d6326d8dc5d7c8560Johannes Berg rx_status = IEEE80211_SKB_RXCB(skb); 774469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt = (struct ieee80211_mgmt *) skb->data; 775469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg fc = le16_to_cpu(mgmt->frame_control); 776469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7777a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 7787a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 779c926d006c1514cfb3572893f41f2324e96823661Tim Harvey if (!sdata->u.ibss.ssid_len) 780c926d006c1514cfb3572893f41f2324e96823661Tim Harvey goto mgmt_out; /* not ready to merge yet */ 781c926d006c1514cfb3572893f41f2324e96823661Tim Harvey 782469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (fc & IEEE80211_FCTL_STYPE) { 783469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_REQ: 784c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg ieee80211_rx_mgmt_probe_req(sdata, skb); 785469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 786469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_RESP: 787469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, 788469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 789469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 790469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_BEACON: 791469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, 792469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 793469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 794469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_AUTH: 795469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_auth_ibss(sdata, mgmt, skb->len); 796469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 797469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 7987a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 799c926d006c1514cfb3572893f41f2324e96823661Tim Harvey mgmt_out: 8007a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 801469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 802469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8031fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata) 804469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 8051fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 806469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8077a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&ifibss->mtx); 8087a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 8097a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg /* 8107a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * Work could be scheduled after scan or similar 8117a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * when we aren't even joined (or trying) with a 8127a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * network. 8137a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg */ 8147a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!ifibss->ssid_len) 8157a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg goto out; 816469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 817469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (ifibss->state) { 818469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_SEARCH: 819469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_find_ibss(sdata); 820469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 821469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_JOINED: 822469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_merge_ibss(sdata); 823469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 824469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg default: 825469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg WARN_ON(1); 826469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 827469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 828469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8297a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg out: 8307a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&ifibss->mtx); 8313a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg} 8323a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg 833469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_ibss_timer(unsigned long data) 834469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 835469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_sub_if_data *sdata = 836469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (struct ieee80211_sub_if_data *) data; 837469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 838469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 839469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8405bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (local->quiescing) { 8415bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 8425bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg return; 8435bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 8445bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 8457a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 846469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 847469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8485bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#ifdef CONFIG_PM 8495bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata) 8505bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 8515bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 8525bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 8535bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (del_timer_sync(&ifibss->timer)) 8545bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 8555bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 8565bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 8575bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata) 8585bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 8595bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 8605bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 8615bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (ifibss->timer_running) { 8625bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg add_timer(&ifibss->timer); 8635bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = false; 8645bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 8655bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 8665bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#endif 8675bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 868469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata) 869469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 870469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 871469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 872469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg setup_timer(&ifibss->timer, ieee80211_ibss_timer, 873469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long) sdata); 8747a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_init(&ifibss->mtx); 875469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 876469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 877469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* scan finished notification */ 878469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local) 879469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 880af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_sub_if_data *sdata; 881469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 88229b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_lock(&local->iflist_mtx); 88329b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 8849607e6b66a0d25ca63b70d54a4283fa13d8f7c9dJohannes Berg if (!ieee80211_sdata_running(sdata)) 8850e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg continue; 886af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_ADHOC) 887af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg continue; 888af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.last_scan_completed = jiffies; 8897a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 890469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 89129b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_unlock(&local->iflist_mtx); 892469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 893469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 894af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 895af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct cfg80211_ibss_params *params) 896af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 897af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 898af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 8997a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom + 9007a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 36 /* bitrates */ + 9017a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 34 /* SSID */ + 9027a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 3 /* DS params */ + 9037a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 4 /* IBSS params */ + 9047a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg params->ie_len); 9057a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!skb) 9067a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg return -ENOMEM; 9077a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 9087a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 9097a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 910af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->bssid) { 911af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN); 912af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = true; 913af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } else 914af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = false; 915af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 916fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.privacy = params->privacy; 917fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->u.ibss.basic_rates = params->basic_rates; 918dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate, 919dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau sizeof(params->mcast_rate)); 920fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg 92157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg sdata->vif.bss_conf.beacon_int = params->beacon_interval; 92257c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 923af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.channel = params->channel; 924af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_channel = params->channel_fixed; 925af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 926adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg /* fix ourselves to that channel now already */ 927adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg if (params->channel_fixed) { 928adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg sdata->local->oper_channel = params->channel; 9290aaffa9b9699894aab3266195a529baf9f96ac29Johannes Berg WARN_ON(!ieee80211_set_channel_type(sdata->local, sdata, 9300aaffa9b9699894aab3266195a529baf9f96ac29Johannes Berg NL80211_CHAN_NO_HT)); 931adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg } 932adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg 933af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->ie) { 934af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len, 935af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg GFP_KERNEL); 936af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->u.ibss.ie) 937af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie_len = params->ie_len; 938af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 939af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 940af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.skb = skb; 941af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 942af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ibss_join_req = jiffies; 943af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 9440e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg memcpy(sdata->u.ibss.ssid, params->ssid, IEEE80211_MAX_SSID_LEN); 9450e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg sdata->u.ibss.ssid_len = params->ssid_len; 9460e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg 9477da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->u.ibss.mtx); 9487da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg 9497da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&sdata->local->mtx); 9505cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 9517da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->local->mtx); 9525cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 95364592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&sdata->local->hw, &sdata->work); 954af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 955af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 956af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 957af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 958af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) 959af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 960af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 9615ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 9625ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_local *local = sdata->local; 9635ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct cfg80211_bss *cbss; 9645ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi u16 capability; 9657a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg int active_ibss; 9667a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 9677a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 9685ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9695ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi active_ibss = ieee80211_sta_active_ibss(sdata); 9705ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9715ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) { 9725ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability = WLAN_CAPABILITY_IBSS; 9735ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9745ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (ifibss->privacy) 9755ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability |= WLAN_CAPABILITY_PRIVACY; 9765ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9775ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->channel, 9785ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->bssid, ifibss->ssid, 9795ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->ssid_len, WLAN_CAPABILITY_IBSS | 9805ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi WLAN_CAPABILITY_PRIVACY, 9815ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability); 9825ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 9835ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (cbss) { 9845ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_unlink_bss(local->hw.wiphy, cbss); 9855ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_put_bss(cbss); 9865ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 9875ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 988af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 989af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sta_info_flush(sdata->local, sdata); 990af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 991af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* remove beacon */ 992af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree(sdata->u.ibss.ie); 993af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb = sdata->u.ibss.presp; 994af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg rcu_assign_pointer(sdata->u.ibss.presp, NULL); 9958fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 9968fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 9978fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg BSS_CHANGED_IBSS); 998af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 999af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree_skb(skb); 1000af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 100135f20c14a103ca2c7062999e934a513b83d84de6Johannes Berg skb_queue_purge(&sdata->skb_queue); 1002af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memset(sdata->u.ibss.bssid, 0, ETH_ALEN); 10035cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg sdata->u.ibss.ssid_len = 0; 10045cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1005bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg del_timer_sync(&sdata->u.ibss.timer); 10067a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 10077a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 1008bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg 10097da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&local->mtx); 10105cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 10117da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&local->mtx); 1012af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1013af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1014af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1015