ibss.c revision 267335d63b808dc861f3a4dc81a605489a8a13ac
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 39af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 40af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg const u8 *bssid, const int beacon_int, 41af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan, 42b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg const u32 basic_rates, 43af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg const u16 capability, u64 tsf) 44469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 45469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 46469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 47b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rates, i; 48469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 49469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 50469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos; 51469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_supported_band *sband; 52f446d10f214091408b7300f15c9adf60569edf28Johannes Berg struct cfg80211_bss *bss; 5357c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg u32 bss_change; 54b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 5513c40c54682ffe62977f670681268a26d500d6faAlexander Simon enum nl80211_channel_type channel_type; 562448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg 577a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 587a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 592448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* Reset own TSF to allow time synchronization work. */ 6037a41b4affa33bb237d3692bf51f1b5ebcaf29d8Eliad Peller drv_reset_tsf(local, sdata); 61469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 62af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb = ifibss->skb; 63a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(ifibss->presp, NULL); 64af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 65af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb->data = skb->head; 66af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb->len = 0; 67af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb_reset_tail_pointer(skb); 68af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb_reserve(skb, sdata->local->hw.extra_tx_headroom); 69469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 70af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (memcmp(ifibss->bssid, bssid, ETH_ALEN)) 71af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sta_info_flush(sdata->local, sdata); 72469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7349b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg /* if merging, indicate to driver that we leave the old IBSS */ 7449b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg if (sdata->vif.bss_conf.ibss_joined) { 7549b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 7686a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_off(sdata->dev); 7749b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IBSS); 7849b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg } 7949b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg 80469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(ifibss->bssid, bssid, ETH_ALEN); 81469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 82af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0; 83469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 84ba1960257c5980f9b58057995ce3394bd8e48ca3Eliad Peller local->oper_channel = chan; 8513c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type = ifibss->channel_type; 8613c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (channel_type > NL80211_CHAN_HT20 && 8713c40c54682ffe62977f670681268a26d500d6faAlexander Simon !cfg80211_can_beacon_sec_chan(local->hw.wiphy, chan, channel_type)) 8813c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type = NL80211_CHAN_HT20; 8913c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (!ieee80211_set_channel_type(local, sdata, channel_type)) { 9013c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* can only fail due to HT40+/- mismatch */ 9113c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type = NL80211_CHAN_HT20; 9213c40c54682ffe62977f670681268a26d500d6faAlexander Simon WARN_ON(!ieee80211_set_channel_type(local, sdata, 9313c40c54682ffe62977f670681268a26d500d6faAlexander Simon NL80211_CHAN_HT20)); 9413c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 95af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); 9657c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 97af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sband = local->hw.wiphy->bands[chan->band]; 98469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 99b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg /* build supported rates array */ 100b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg pos = supp_rates; 101b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < sband->n_bitrates; i++) { 102b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = sband->bitrates[i].bitrate; 103b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 basic = 0; 104b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (basic_rates & BIT(i)) 105b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic = 0x80; 106b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg *pos++ = basic | (u8) (rate / 5); 107b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 108b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 109469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Build IBSS probe response */ 110af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mgmt = (void *) skb_put(skb, 24 + sizeof(mgmt->u.beacon)); 111469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); 112469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 113469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_STYPE_PROBE_RESP); 114469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memset(mgmt->da, 0xff, ETH_ALEN); 11547846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 116469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 11757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_int); 118707c1b4e68a2811ff2c9e75750a98a3310789a2dSujith mgmt->u.beacon.timestamp = cpu_to_le64(tsf); 119469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->u.beacon.capab_info = cpu_to_le16(capability); 120469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 121469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + ifibss->ssid_len); 122469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SSID; 123469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = ifibss->ssid_len; 124469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, ifibss->ssid, ifibss->ssid_len); 125469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 126b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates; 127469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rates > 8) 128469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rates = 8; 129469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 130469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SUPP_RATES; 131469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 132469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, supp_rates, rates); 133469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 134469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sband->band == IEEE80211_BAND_2GHZ) { 135469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 1); 136469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_DS_PARAMS; 137469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 1; 138af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg *pos++ = ieee80211_frequency_to_channel(chan->center_freq); 139469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 140469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 141469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 2); 142469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_IBSS_PARAMS; 143469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 2; 144469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* FIX: set ATIM window based on scan results */ 145469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 146469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 147469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 148b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->n_bitrates > 8) { 149b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates - 8; 150469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 151469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 152469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 153469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, &supp_rates[8], rates); 154469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 155469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 156af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->ie_len) 157af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(skb_put(skb, ifibss->ie_len), 158af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ifibss->ie, ifibss->ie_len); 159af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 16013c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* add HT capability and information IEs */ 16113c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (channel_type && sband->ht_cap.ht_supported) { 16213c40c54682ffe62977f670681268a26d500d6faAlexander Simon pos = skb_put(skb, 4 + 16313c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(struct ieee80211_ht_cap) + 16413c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(struct ieee80211_ht_info)); 16513c40c54682ffe62977f670681268a26d500d6faAlexander Simon pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 16613c40c54682ffe62977f670681268a26d500d6faAlexander Simon sband->ht_cap.cap); 16713c40c54682ffe62977f670681268a26d500d6faAlexander Simon pos = ieee80211_ie_build_ht_info(pos, 16813c40c54682ffe62977f670681268a26d500d6faAlexander Simon &sband->ht_cap, 16913c40c54682ffe62977f670681268a26d500d6faAlexander Simon chan, 17013c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type); 17113c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 17213c40c54682ffe62977f670681268a26d500d6faAlexander Simon 1739eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (local->hw.queues >= 4) { 1749eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf pos = skb_put(skb, 9); 1759eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = WLAN_EID_VENDOR_SPECIFIC; 1769eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 7; /* len */ 1779eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ 1789eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x50; 1799eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0xf2; 1809eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 2; /* WME */ 1819eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* WME info */ 1829eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 1; /* WME ver */ 1839eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* U-APSD no in use */ 1849eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 1859eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 186cf778b00e96df6d64f8e21b8395d1f8a859ecdc7Eric Dumazet rcu_assign_pointer(ifibss->presp, skb); 187469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1882d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg sdata->vif.bss_conf.beacon_int = beacon_int; 189fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->vif.bss_conf.basic_rates = basic_rates; 1902d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change = BSS_CHANGED_BEACON_INT; 1912d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= ieee80211_reset_erp_info(sdata); 1922d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BSSID; 1932d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON; 1942d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON_ENABLED; 195392cfdb10dab6c7dfa5fed18d8a44d7453d42196Teemu Paasikivi bss_change |= BSS_CHANGED_BASIC_RATES; 19613c40c54682ffe62977f670681268a26d500d6faAlexander Simon bss_change |= BSS_CHANGED_HT; 1978fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg bss_change |= BSS_CHANGED_IBSS; 1988fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = true; 1992d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg ieee80211_bss_info_change_notify(sdata, bss_change); 200469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 201b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg ieee80211_sta_def_wmm_params(sdata, sband->n_bitrates, supp_rates); 202469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 203469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ifibss->state = IEEE80211_IBSS_MLME_JOINED; 204af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 205af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 206469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 207f446d10f214091408b7300f15c9adf60569edf28Johannes Berg bss = cfg80211_inform_bss_frame(local->hw.wiphy, local->hw.conf.channel, 208f446d10f214091408b7300f15c9adf60569edf28Johannes Berg mgmt, skb->len, 0, GFP_KERNEL); 209f446d10f214091408b7300f15c9adf60569edf28Johannes Berg cfg80211_put_bss(bss); 21086a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_on(sdata->dev); 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 2546d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartullistatic struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta, 2556d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli bool auth) 2568bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg __acquires(RCU) 2578bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg{ 2588bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_sub_if_data *sdata = sta->sdata; 2598bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg u8 addr[ETH_ALEN]; 2608bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 2618bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg memcpy(addr, sta->sta.addr, ETH_ALEN); 2628bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 2638bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg#ifdef CONFIG_MAC80211_VERBOSE_DEBUG 2648bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg wiphy_debug(sdata->local->hw.wiphy, 2658bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg "Adding new IBSS station %pM (dev=%s)\n", 2668bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg addr, sdata->name); 2678bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg#endif 2688bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 26983d5cc012441531ab0bf6f99881958e964e9cf11Johannes Berg sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 27083d5cc012441531ab0bf6f99881958e964e9cf11Johannes Berg sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 271267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli /* authorize the station only if the network is not RSN protected. If 272267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli * not wait for the userspace to authorize it */ 273267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli if (!sta->sdata->u.ibss.control_port) 274267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); 2758bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 2768bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rate_control_rate_init(sta); 2778bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 2788bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* If it fails, maybe we raced another insertion? */ 2798bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (sta_info_insert_rcu(sta)) 2808bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return sta_info_get(sdata, addr); 2816d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli if (auth) { 28224dd0dd74ec8dc4abada132e380dc179459b0f77Antonio Quartulli#ifdef CONFIG_MAC80211_IBSS_DEBUG 2836d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli printk(KERN_DEBUG "TX Auth SA=%pM DA=%pM BSSID=%pM" 2846d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli "(auth_transaction=1)\n", sdata->vif.addr, 2856d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli sdata->u.ibss.bssid, addr); 28624dd0dd74ec8dc4abada132e380dc179459b0f77Antonio Quartulli#endif 2876d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli ieee80211_send_auth(sdata, 1, WLAN_AUTH_OPEN, NULL, 0, 2886d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli addr, sdata->u.ibss.bssid, NULL, 0, 0); 2896d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli } 2908bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return sta; 2918bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg} 2928bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 2938bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergstatic struct sta_info * 2948bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 2958bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg const u8 *bssid, const u8 *addr, 2966d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli u32 supp_rates, bool auth) 2978bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg __acquires(RCU) 2988bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg{ 2998bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3008bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_local *local = sdata->local; 3018bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 3028bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg int band = local->hw.conf.channel->band; 3038bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3048bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* 3058bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg * XXX: Consider removing the least recently used entry and 3068bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg * allow new one to be added. 3078bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg */ 3088bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 3098bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (net_ratelimit()) 3108bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg printk(KERN_DEBUG "%s: No room for a new IBSS STA entry %pM\n", 3118bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sdata->name, addr); 3128bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3138bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3148bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3158bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3168bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) { 3178bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3188bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3198bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3208bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3218bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (compare_ether_addr(bssid, sdata->u.ibss.bssid)) { 3228bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3238bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3248bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3258bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3268bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = sta_info_alloc(sdata, addr, GFP_KERNEL); 3278bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (!sta) { 3288bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3298bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3308bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3318bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3328bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta->last_rx = jiffies; 3338bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3348bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* make sure mandatory rates are always added */ 3358bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta->sta.supp_rates[band] = supp_rates | 3368bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg ieee80211_mandatory_rates(local, band); 3378bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3386d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli return ieee80211_ibss_finish_sta(sta, auth); 3396d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli} 3406d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3416d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartullistatic void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, 3426d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli struct ieee80211_mgmt *mgmt, 3436d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli size_t len) 3446d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli{ 3456d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli u16 auth_alg, auth_transaction; 3466d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3476d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli lockdep_assert_held(&sdata->u.ibss.mtx); 3486d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3496d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli if (len < 24 + 6) 3506d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli return; 3516d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3526d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); 3536d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); 3546d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3556d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) 3566d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli return; 3576d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli#ifdef CONFIG_MAC80211_IBSS_DEBUG 3586d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli printk(KERN_DEBUG "%s: RX Auth SA=%pM DA=%pM BSSID=%pM." 3596d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli "(auth_transaction=%d)\n", 3606d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli sdata->name, mgmt->sa, mgmt->da, mgmt->bssid, auth_transaction); 3616d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli#endif 3626d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli sta_info_destroy_addr(sdata, mgmt->sa); 3636d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 0, false); 3646d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli rcu_read_unlock(); 3656d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3666d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli /* 3676d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * IEEE 802.11 standard does not require authentication in IBSS 3686d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * networks and most implementations do not seem to use it. 3696d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * However, try to reply to authentication attempts if someone 3706d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * has actually implemented this. 3716d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli */ 3726d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, NULL, 0, 3736d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli mgmt->sa, sdata->u.ibss.bssid, NULL, 0, 0); 3748bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg} 3758bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 376469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, 377469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 378469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 379469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status, 380469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems *elems, 381469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bool beacon) 382469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 383469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 384469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int freq; 3850c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 386469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_bss *bss; 387469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 388469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_channel *channel; 389469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u64 beacon_timestamp, rx_timestamp; 390469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u32 supp_rates = 0; 391469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg enum ieee80211_band band = rx_status->band; 39213c40c54682ffe62977f670681268a26d500d6faAlexander Simon struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; 39313c40c54682ffe62977f670681268a26d500d6faAlexander Simon bool rates_updated = false; 394469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 395469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ds_params && elems->ds_params_len == 1) 39659eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf freq = ieee80211_channel_to_frequency(elems->ds_params[0], 39759eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf band); 398469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 399469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg freq = rx_status->freq; 400469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 401469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel = ieee80211_get_channel(local->hw.wiphy, freq); 402469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 403469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 404469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 405469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4069eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sdata->vif.type == NL80211_IFTYPE_ADHOC && 407469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) { 408469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 409469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 410abe60632f311d515b082b450504ee24006023951Johannes Berg sta = sta_info_get(sdata, mgmt->sa); 411469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4129eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (elems->supp_rates) { 4139eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, 4149eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf band); 4159eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta) { 4169eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf u32 prev_rates; 4179eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 4189eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates = sta->sta.supp_rates[band]; 4199eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf /* make sure mandatory rates are always added */ 4209eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band] = supp_rates | 4219eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf ieee80211_mandatory_rates(local, band); 422469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4239eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta->sta.supp_rates[band] != prev_rates) { 424469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 4259eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf printk(KERN_DEBUG 4269eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "%s: updated supp_rates set " 4279eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "for %pM based on beacon" 4289eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf "/probe_resp (0x%x -> 0x%x)\n", 4299eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sdata->name, sta->sta.addr, 4309eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates, 4319eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band]); 432469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 43313c40c54682ffe62977f670681268a26d500d6faAlexander Simon rates_updated = true; 4349eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 4358bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } else { 4368bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 4379eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, 4386d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli mgmt->sa, supp_rates, true); 4398bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 44034e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg } 4419eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 4429eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta && elems->wmm_info) 443c2c98fdeb5c897499644eb247285c8e3dacc6450Johannes Berg set_sta_flag(sta, WLAN_STA_WME); 4449eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 44513c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (sta && elems->ht_info_elem && elems->ht_cap_elem && 44613c40c54682ffe62977f670681268a26d500d6faAlexander Simon sdata->u.ibss.channel_type != NL80211_CHAN_NO_HT) { 44713c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* we both use HT */ 44813c40c54682ffe62977f670681268a26d500d6faAlexander Simon struct ieee80211_sta_ht_cap sta_ht_cap_new; 44913c40c54682ffe62977f670681268a26d500d6faAlexander Simon enum nl80211_channel_type channel_type = 45013c40c54682ffe62977f670681268a26d500d6faAlexander Simon ieee80211_ht_info_to_channel_type( 45113c40c54682ffe62977f670681268a26d500d6faAlexander Simon elems->ht_info_elem); 45213c40c54682ffe62977f670681268a26d500d6faAlexander Simon 45313c40c54682ffe62977f670681268a26d500d6faAlexander Simon ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 45413c40c54682ffe62977f670681268a26d500d6faAlexander Simon elems->ht_cap_elem, 45513c40c54682ffe62977f670681268a26d500d6faAlexander Simon &sta_ht_cap_new); 45613c40c54682ffe62977f670681268a26d500d6faAlexander Simon 45713c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* 45813c40c54682ffe62977f670681268a26d500d6faAlexander Simon * fall back to HT20 if we don't use or use 45913c40c54682ffe62977f670681268a26d500d6faAlexander Simon * the other extension channel 46013c40c54682ffe62977f670681268a26d500d6faAlexander Simon */ 46113c40c54682ffe62977f670681268a26d500d6faAlexander Simon if ((channel_type == NL80211_CHAN_HT40MINUS || 46213c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type == NL80211_CHAN_HT40PLUS) && 46313c40c54682ffe62977f670681268a26d500d6faAlexander Simon channel_type != sdata->u.ibss.channel_type) 46413c40c54682ffe62977f670681268a26d500d6faAlexander Simon sta_ht_cap_new.cap &= 46513c40c54682ffe62977f670681268a26d500d6faAlexander Simon ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; 46613c40c54682ffe62977f670681268a26d500d6faAlexander Simon 46713c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (memcmp(&sta->sta.ht_cap, &sta_ht_cap_new, 46813c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(sta_ht_cap_new))) { 46913c40c54682ffe62977f670681268a26d500d6faAlexander Simon memcpy(&sta->sta.ht_cap, &sta_ht_cap_new, 47013c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(sta_ht_cap_new)); 47113c40c54682ffe62977f670681268a26d500d6faAlexander Simon rates_updated = true; 47213c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 47313c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 47413c40c54682ffe62977f670681268a26d500d6faAlexander Simon 47513c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (sta && rates_updated) 47613c40c54682ffe62977f670681268a26d500d6faAlexander Simon rate_control_rate_init(sta); 47713c40c54682ffe62977f670681268a26d500d6faAlexander Simon 4789eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf rcu_read_unlock(); 479469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 480469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 481469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, 482469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel, beacon); 483469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!bss) 484469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 485469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4860c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = container_of((void *)bss, struct cfg80211_bss, priv); 4870c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 488469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* was just updated in ieee80211_bss_info_update */ 4890c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg beacon_timestamp = cbss->tsf; 490469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 491469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* check if we need to merge IBSS */ 492469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 493469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* we use a fixed BSSID */ 494a98bfec2985221d8e0904a526cbe88590eaad2a6Benoit Papillault if (sdata->u.ibss.fixed_bssid) 495469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 496469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 497469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* not an IBSS */ 4980c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (!(cbss->capability & WLAN_CAPABILITY_IBSS)) 499469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 500469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 501469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different channel */ 5020c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss->channel != local->oper_channel) 503469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 504469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 505469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different SSID */ 506469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ssid_len != sdata->u.ibss.ssid_len || 507469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(elems->ssid, sdata->u.ibss.ssid, 508469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->u.ibss.ssid_len)) 509469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 510469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 51134e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen /* same BSSID */ 5120c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (memcmp(cbss->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) 51334e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen goto put_bss; 51434e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen 5156ebacbb79d2d05978ba50a24d8cbe2a76ff2014cJohannes Berg if (rx_status->flag & RX_FLAG_MACTIME_MPDU) { 516469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* 517469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * For correct IBSS merging we need mactime; since mactime is 518469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * defined as the time the first data symbol of the frame hits 519469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * the PHY, and the timestamp of the beacon is defined as "the 520469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * time that the data symbol containing the first bit of the 521469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * timestamp is transmitted to the PHY plus the transmitting 522469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * STA's delays through its local PHY from the MAC-PHY 523469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * interface to its interface with the WM" (802.11 11.1.2) 524469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * - equals the time this bit arrives at the receiver - we have 525469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * to take into account the offset between the two. 526469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * 527469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * E.g. at 1 MBit that means mactime is 192 usec earlier 528469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * (=24 bytes * 8 usecs/byte) than the beacon timestamp. 529469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg */ 530469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int rate; 531469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 532469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rx_status->flag & RX_FLAG_HT) 533469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate = 65; /* TODO: HT rates */ 534469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 535469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rate = local->hw.wiphy->bands[band]-> 536469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bitrates[rx_status->rate_idx].bitrate; 537469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 538469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); 5392448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } else { 5402448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* 5412448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * second best option: get current TSF 5422448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * (will return -1 if not supported) 5432448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg */ 54437a41b4affa33bb237d3692bf51f1b5ebcaf29d8Eliad Peller rx_timestamp = drv_get_tsf(local, sdata); 5452448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } 546469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 547469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 548469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "RX beacon SA=%pM BSSID=" 549469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", 550469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->sa, mgmt->bssid, 551469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)rx_timestamp, 552469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)beacon_timestamp, 553469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long long)(rx_timestamp - beacon_timestamp), 554469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies); 555469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 556469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 557469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (beacon_timestamp > rx_timestamp) { 558469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 559469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: beacon TSF higher than " 560469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "local TSF - IBSS merge with BSSID %pM\n", 56147846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->bssid); 562469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 563469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_join_ibss(sdata, bss); 56409a08cff3d13315c948e6aee5cf912f8f1db54e7Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, band); 56534e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 5666d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli supp_rates, true); 5678bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 568469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 569469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 570469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg put_bss: 571469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 572469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 573469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5748bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergvoid ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 5758bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg const u8 *bssid, const u8 *addr, 5768bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg u32 supp_rates) 577469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 5782e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 579469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 580469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 581469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int band = local->hw.conf.channel->band; 582469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 583af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* 584af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * XXX: Consider removing the least recently used entry and 585af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * allow new one to be added. 586af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg */ 587469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 588af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (net_ratelimit()) 589af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg printk(KERN_DEBUG "%s: No room for a new IBSS STA entry %pM\n", 59047846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, addr); 5918bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 592469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 593469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5942e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) 5958bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 5962e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau 597469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (compare_ether_addr(bssid, sdata->u.ibss.bssid)) 5988bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 599469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6008bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); 601469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!sta) 6028bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 603469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 604c8716d9dc13c7f6ee92f2bfc6cc3b723b417bff8Rajkumar Manoharan sta->last_rx = jiffies; 605d9a7ddb05e5419ca5e4b54f57074dc33c7ea991cJohannes Berg 606469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* make sure mandatory rates are always added */ 607469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sta->sta.supp_rates[band] = supp_rates | 608469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_mandatory_rates(local, band); 609469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6108bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock(&ifibss->incomplete_lock); 6118bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_add(&sta->list, &ifibss->incomplete_stations); 6128bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock(&ifibss->incomplete_lock); 6138bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 614469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 615469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 616469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) 617469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 618469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 619469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active = 0; 620469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 621469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6227a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 6237a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 624469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 625469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 626469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg list_for_each_entry_rcu(sta, &local->sta_list, list) { 627469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta->sdata == sdata && 628469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, 629469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies)) { 630469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active++; 631469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 632469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 633469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 634469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 635469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_unlock(); 636469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 637469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return active; 638469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 639469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 640ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 641ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_JOINED 642ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 643469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 644469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) 645469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 646469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 647469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6487a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 6497a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 650af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 651af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 652469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 653469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); 654af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 655450aae3d7b60a970f266349a837dfb30a539198bSujith if (time_before(jiffies, ifibss->last_scan_completed + 656450aae3d7b60a970f266349a837dfb30a539198bSujith IEEE80211_IBSS_MERGE_INTERVAL)) 657450aae3d7b60a970f266349a837dfb30a539198bSujith return; 658450aae3d7b60a970f266349a837dfb30a539198bSujith 659469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ieee80211_sta_active_ibss(sdata)) 660469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 661469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 662c037b8367c7e2b775a99d74037f5df014d2fbf06John W. Linville if (ifibss->fixed_channel) 663469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 664469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 665469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " 66647846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg "IBSS networks with same SSID (merge)\n", sdata->name); 667469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 668be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 669c037b8367c7e2b775a99d74037f5df014d2fbf06John W. Linville ifibss->ssid, ifibss->ssid_len, NULL); 670469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 671469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 672af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) 673469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 674469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 675469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 bssid[ETH_ALEN]; 676469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 capability; 677469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int i; 678469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6797a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 6807a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 681af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) { 682469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(bssid, ifibss->bssid, ETH_ALEN); 683469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } else { 684469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Generate random, not broadcast, locally administered BSSID. Mix in 685469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * own MAC address to make sure that devices that do not have proper 686469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * random number generator get different BSSID. */ 687469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg get_random_bytes(bssid, ETH_ALEN); 688469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg for (i = 0; i < ETH_ALEN; i++) 68947846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg bssid[i] ^= sdata->vif.addr[i]; 690469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] &= ~0x01; 691469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] |= 0x02; 692469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 693469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 694469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n", 69547846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, bssid); 696469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 697469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability = WLAN_CAPABILITY_IBSS; 698469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 699fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 700469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 701469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 702469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->drop_unencrypted = 0; 703469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 70457c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int, 705fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi ifibss->channel, ifibss->basic_rates, 706b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg capability, 0); 707469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 708469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 709ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 710ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_SEARCH 711ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 712ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault 713af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) 714469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 715469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 716469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 7170c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 718af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan = NULL; 719469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg const u8 *bssid = NULL; 720469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active_ibss; 721e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg u16 capability; 722469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7237a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 7247a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 725469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active_ibss = ieee80211_sta_active_ibss(sdata); 726469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 727469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", 72847846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, active_ibss); 729469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 730469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 731469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (active_ibss) 732af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 733469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 734e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability = WLAN_CAPABILITY_IBSS; 735fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 736e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 737af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) 738af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg bssid = ifibss->bssid; 739af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 740af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg chan = ifibss->channel; 741af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!is_zero_ether_addr(ifibss->bssid)) 742469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid = ifibss->bssid; 7430c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid, 7440c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg ifibss->ssid, ifibss->ssid_len, 7450c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY, 7460c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg capability); 7470c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 7480c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss) { 7490c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct ieee80211_bss *bss; 750469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7510c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg bss = (void *)cbss->priv; 752469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 753469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG " sta_find_ibss: selected %pM current " 7540c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg "%pM\n", cbss->bssid, ifibss->bssid); 755469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 756469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 757469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM" 758469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg " based on configured SSID\n", 7590c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sdata->name, cbss->bssid); 760469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 761af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_join_ibss(sdata, bss); 762469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 763af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 764d419b9f0fa69e79ccba3e5e79a58a52ae0c2ed6aReinette Chatre } 765469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 766469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 767469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG " did not try to join ibss\n"); 768469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 769469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 770469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Selected IBSS not found in current scan results - try to scan */ 771ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault if (time_after(jiffies, ifibss->last_scan_completed + 772469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_SCAN_INTERVAL)) { 773469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " 77447846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg "join\n", sdata->name); 775469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 776be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 777be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->ssid, ifibss->ssid_len, 778be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->fixed_channel ? ifibss->channel : NULL); 779ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault } else { 780469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int interval = IEEE80211_SCAN_INTERVAL; 781469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 782469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (time_after(jiffies, ifibss->ibss_join_req + 783469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_IBSS_JOIN_TIMEOUT)) { 784af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!(local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS)) { 785af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_create_ibss(sdata); 786af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 787af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 788469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: IBSS not allowed on" 78947846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg " %d MHz\n", sdata->name, 790469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg local->hw.conf.channel->center_freq); 791469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 792469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* No IBSS found - decrease scan interval and continue 793469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * scanning. */ 794469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg interval = IEEE80211_SCAN_INTERVAL_SLOW; 795469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 796469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 797af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 798af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + interval)); 799469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 800469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 801469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 802469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, 803c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct sk_buff *req) 804469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 805c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct ieee80211_mgmt *mgmt = (void *)req->data; 806469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 807469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 808c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg int tx_last_beacon, len = req->len; 809469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 810469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *resp; 81140b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg struct sk_buff *presp; 812469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos, *end; 813469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8147a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 8157a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 81640b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg presp = rcu_dereference_protected(ifibss->presp, 81740b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg lockdep_is_held(&ifibss->mtx)); 81840b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg 819469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ifibss->state != IEEE80211_IBSS_MLME_JOINED || 82040b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg len < 24 + 2 || !presp) 821469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 822469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8232448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg tx_last_beacon = drv_tx_last_beacon(local); 824469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 825469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 826469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: RX ProbeReq SA=%pM DA=%pM BSSID=%pM" 827469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg " (tx_last_beacon=%d)\n", 82847846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->sa, mgmt->da, 829469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->bssid, tx_last_beacon); 830469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 831469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8321ed76487ce115110171480deabd3cd4656f9803eFelix Fietkau if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da)) 833469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 834469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 835469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (memcmp(mgmt->bssid, ifibss->bssid, ETH_ALEN) != 0 && 836469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) 837469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 838469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 839469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg end = ((u8 *) mgmt) + len; 840469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = mgmt->u.probe_req.variable; 841469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[0] != WLAN_EID_SSID || 842469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos + 2 + pos[1] > end) { 843469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 844469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " 845469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg "from %pM\n", 84647846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, mgmt->sa); 847469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif 848469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 849469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 850469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[1] != 0 && 851469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (pos[1] != ifibss->ssid_len || 8520da780c269957783d341fc3559e6b4c9912af7b4Benoit Papillault memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) { 853469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Ignore ProbeReq for foreign SSID */ 854469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 855469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 856469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 857469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Reply with ProbeResp */ 85840b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg skb = skb_copy(presp, GFP_KERNEL); 859469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!skb) 860469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 861469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 862469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg resp = (struct ieee80211_mgmt *) skb->data; 863469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(resp->da, mgmt->sa, ETH_ALEN); 864469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#ifdef CONFIG_MAC80211_IBSS_DEBUG 865469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg printk(KERN_DEBUG "%s: Sending ProbeResp to %pM\n", 86647846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg sdata->name, resp->da); 867469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#endif /* CONFIG_MAC80211_IBSS_DEBUG */ 86862ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 86962ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg ieee80211_tx_skb(sdata, skb); 870469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 871469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 872469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, 873469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 874469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 875469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 876469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 877469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 878469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 879469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 880469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 881469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 882469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 883469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 884469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 885469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg &elems); 886469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 887469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); 888469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 889469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 890469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, 891469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 892469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 893469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 894469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 895469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 896469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 897469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 898469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Process beacon from the current BSS */ 899469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; 900469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 901469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 902469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 903469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); 904469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 905469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); 906469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 907469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9081fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 9091fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct sk_buff *skb) 910469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 911469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status; 912469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 913469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 fc; 914469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 915f1d58c2521eb160178b2151d6326d8dc5d7c8560Johannes Berg rx_status = IEEE80211_SKB_RXCB(skb); 916469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt = (struct ieee80211_mgmt *) skb->data; 917469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg fc = le16_to_cpu(mgmt->frame_control); 918469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9197a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 9207a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 921c926d006c1514cfb3572893f41f2324e96823661Tim Harvey if (!sdata->u.ibss.ssid_len) 922c926d006c1514cfb3572893f41f2324e96823661Tim Harvey goto mgmt_out; /* not ready to merge yet */ 923c926d006c1514cfb3572893f41f2324e96823661Tim Harvey 924469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (fc & IEEE80211_FCTL_STYPE) { 925469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_REQ: 926c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg ieee80211_rx_mgmt_probe_req(sdata, skb); 927469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 928469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_RESP: 929469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, 930469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 931469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 932469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_BEACON: 933469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, 934469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 935469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 936469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_AUTH: 937469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_auth_ibss(sdata, mgmt, skb->len); 938469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 939469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 9407a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 941c926d006c1514cfb3572893f41f2324e96823661Tim Harvey mgmt_out: 9427a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 943469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 944469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9451fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata) 946469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 9471fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 9488bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 949469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9507a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&ifibss->mtx); 9517a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 9527a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg /* 9537a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * Work could be scheduled after scan or similar 9547a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * when we aren't even joined (or trying) with a 9557a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * network. 9567a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg */ 9577a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!ifibss->ssid_len) 9587a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg goto out; 959469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9608bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 9618bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg while (!list_empty(&ifibss->incomplete_stations)) { 9628bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = list_first_entry(&ifibss->incomplete_stations, 9638bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info, list); 9648bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_del(&sta->list); 9658bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 9668bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 9676d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli ieee80211_ibss_finish_sta(sta, true); 9688bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 9698bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 9708bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 9718bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 9728bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 973469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (ifibss->state) { 974469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_SEARCH: 975469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_find_ibss(sdata); 976469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 977469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_JOINED: 978469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_merge_ibss(sdata); 979469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 980469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg default: 981469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg WARN_ON(1); 982469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 983469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 984469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9857a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg out: 9867a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&ifibss->mtx); 9873a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg} 9883a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg 989469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_ibss_timer(unsigned long data) 990469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 991469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_sub_if_data *sdata = 992469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (struct ieee80211_sub_if_data *) data; 993469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 994469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 995469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9965bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (local->quiescing) { 9975bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 9985bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg return; 9995bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 10005bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 10017a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 1002469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1003469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 10045bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#ifdef CONFIG_PM 10055bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata) 10065bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 10075bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 10085bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 10095bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (del_timer_sync(&ifibss->timer)) 10105bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 10115bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 10125bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 10135bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata) 10145bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 10155bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 10165bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 10175bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (ifibss->timer_running) { 10185bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg add_timer(&ifibss->timer); 10195bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = false; 10205bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 10215bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 10225bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#endif 10235bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 1024469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata) 1025469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 1026469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 1027469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1028469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg setup_timer(&ifibss->timer, ieee80211_ibss_timer, 1029469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long) sdata); 10307a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_init(&ifibss->mtx); 10318bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg INIT_LIST_HEAD(&ifibss->incomplete_stations); 10328bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_init(&ifibss->incomplete_lock); 1033469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1034469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1035469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* scan finished notification */ 1036469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local) 1037469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 1038af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_sub_if_data *sdata; 1039469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 104029b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_lock(&local->iflist_mtx); 104129b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 10429607e6b66a0d25ca63b70d54a4283fa13d8f7c9dJohannes Berg if (!ieee80211_sdata_running(sdata)) 10430e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg continue; 1044af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_ADHOC) 1045af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg continue; 1046af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.last_scan_completed = jiffies; 10477a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 1048469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 104929b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_unlock(&local->iflist_mtx); 1050469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1051469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1052af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1053af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct cfg80211_ibss_params *params) 1054af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 1055af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 1056ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich u32 changed = 0; 1057af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 10587a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom + 105913c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(struct ieee80211_hdr_3addr) + 106013c40c54682ffe62977f670681268a26d500d6faAlexander Simon 12 /* struct ieee80211_mgmt.u.beacon */ + 106113c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + IEEE80211_MAX_SSID_LEN /* max SSID */ + 106213c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + 8 /* max Supported Rates */ + 106313c40c54682ffe62977f670681268a26d500d6faAlexander Simon 3 /* max DS params */ + 106413c40c54682ffe62977f670681268a26d500d6faAlexander Simon 4 /* IBSS params */ + 106513c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + (IEEE80211_MAX_SUPP_RATES - 8) + 106613c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + sizeof(struct ieee80211_ht_cap) + 106713c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + sizeof(struct ieee80211_ht_info) + 10687a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg params->ie_len); 10697a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!skb) 10707a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg return -ENOMEM; 10717a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 10727a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 10737a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 1074af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->bssid) { 1075af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN); 1076af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = true; 1077af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } else 1078af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = false; 1079af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1080fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.privacy = params->privacy; 1081267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli sdata->u.ibss.control_port = params->control_port; 1082fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->u.ibss.basic_rates = params->basic_rates; 1083dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate, 1084dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau sizeof(params->mcast_rate)); 1085fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg 108657c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg sdata->vif.bss_conf.beacon_int = params->beacon_interval; 108757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 1088af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.channel = params->channel; 108913c40c54682ffe62977f670681268a26d500d6faAlexander Simon sdata->u.ibss.channel_type = params->channel_type; 1090af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_channel = params->channel_fixed; 1091af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1092adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg /* fix ourselves to that channel now already */ 1093adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg if (params->channel_fixed) { 1094adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg sdata->local->oper_channel = params->channel; 109513c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (!ieee80211_set_channel_type(sdata->local, sdata, 1096fb03c5eb8c0bbf4561cb5aa72e0a9546e9574661Dan Carpenter params->channel_type)) { 1097fb03c5eb8c0bbf4561cb5aa72e0a9546e9574661Dan Carpenter mutex_unlock(&sdata->u.ibss.mtx); 1098cb71b8d80334add8991862f9fd36dc50874944ceSimon Wunderlich kfree_skb(skb); 109913c40c54682ffe62977f670681268a26d500d6faAlexander Simon return -EINVAL; 1100fb03c5eb8c0bbf4561cb5aa72e0a9546e9574661Dan Carpenter } 1101adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg } 1102adfba3c7c026a6a5560d2a43fefc9b198cb74462Johannes Berg 1103af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->ie) { 1104af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len, 1105af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg GFP_KERNEL); 1106af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->u.ibss.ie) 1107af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie_len = params->ie_len; 1108af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 1109af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1110af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.skb = skb; 1111af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 1112af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ibss_join_req = jiffies; 1113af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 11140e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg memcpy(sdata->u.ibss.ssid, params->ssid, IEEE80211_MAX_SSID_LEN); 11150e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg sdata->u.ibss.ssid_len = params->ssid_len; 11160e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg 11177da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->u.ibss.mtx); 11187da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg 11197da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&sdata->local->mtx); 11205cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 11217da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->local->mtx); 11225cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1123ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich /* 1124ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 802.11n-2009 9.13.3.1: In an IBSS, the HT Protection field is 1125ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * reserved, but an HT STA shall protect HT transmissions as though 1126ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * the HT Protection field were set to non-HT mixed mode. 1127ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 1128ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * In an IBSS, the RIFS Mode field of the HT Operation element is 1129ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * also reserved, but an HT STA shall operate as though this field 1130ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * were set to 1. 1131ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich */ 1132ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1133ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich sdata->vif.bss_conf.ht_operation_mode |= 1134ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 1135ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich | IEEE80211_HT_PARAM_RIFS_MODE; 1136ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1137ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich changed |= BSS_CHANGED_HT; 1138ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich ieee80211_bss_info_change_notify(sdata, changed); 1139ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 114064592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&sdata->local->hw, &sdata->work); 1141af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1142af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1143af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1144af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1145af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) 1146af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 1147af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 11485ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 11495ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_local *local = sdata->local; 11505ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct cfg80211_bss *cbss; 11515ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi u16 capability; 11527a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg int active_ibss; 11538bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 11547a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 11557a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 11565ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 1157f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 1158f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg memset(sdata->u.ibss.bssid, 0, ETH_ALEN); 1159f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg sdata->u.ibss.ssid_len = 0; 1160f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg 11615ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi active_ibss = ieee80211_sta_active_ibss(sdata); 11625ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11635ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) { 11645ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability = WLAN_CAPABILITY_IBSS; 11655ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11665ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (ifibss->privacy) 11675ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability |= WLAN_CAPABILITY_PRIVACY; 11685ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11695ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->channel, 11705ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->bssid, ifibss->ssid, 11715ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->ssid_len, WLAN_CAPABILITY_IBSS | 11725ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi WLAN_CAPABILITY_PRIVACY, 11735ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability); 11745ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11755ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (cbss) { 11765ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_unlink_bss(local->hw.wiphy, cbss); 11775ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_put_bss(cbss); 11785ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 11795ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 1180af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1181af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sta_info_flush(sdata->local, sdata); 11828bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 11838bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 11848bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg while (!list_empty(&ifibss->incomplete_stations)) { 11858bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = list_first_entry(&ifibss->incomplete_stations, 11868bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info, list); 11878bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_del(&sta->list); 11888bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 11898bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 11908bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta_info_free(local, sta); 11918bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 11928bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 11938bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 11948bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 119586a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_off(sdata->dev); 1196af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1197af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* remove beacon */ 1198af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree(sdata->u.ibss.ie); 119940b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg skb = rcu_dereference_protected(sdata->u.ibss.presp, 120040b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg lockdep_is_held(&sdata->u.ibss.mtx)); 1201a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(sdata->u.ibss.presp, NULL); 12028fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 12038fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 12048fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg BSS_CHANGED_IBSS); 1205af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 1206af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree_skb(skb); 1207af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 120835f20c14a103ca2c7062999e934a513b83d84de6Johannes Berg skb_queue_purge(&sdata->skb_queue); 12095cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1210bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg del_timer_sync(&sdata->u.ibss.timer); 12117a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 12127a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 1213bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg 12147da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&local->mtx); 12155cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 12167da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&local->mtx); 1217af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1218af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1219af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1220