ibss.c revision 4bf88530be971bf95a7830ca61b4120980bf4347
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 24469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include "ieee80211_i.h" 252448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg#include "driver-ops.h" 26469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#include "rate.h" 27469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 28469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_SCAN_INTERVAL (2 * HZ) 29469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) 30469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 31469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) 32469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) 33469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 34469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg#define IEEE80211_IBSS_MAX_STA_ENTRIES 128 35469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 36469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 37af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 38af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg const u8 *bssid, const int beacon_int, 39af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan, 40b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg const u32 basic_rates, 41c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan const u16 capability, u64 tsf, 42c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan bool creator) 43469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 44469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 45469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 46b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rates, i; 47469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 48469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 49469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos; 50469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_supported_band *sband; 51f446d10f214091408b7300f15c9adf60569edf28Johannes Berg struct cfg80211_bss *bss; 5257c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg u32 bss_change; 53b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 54683b6d3b31a51956ea540df00abb0b78894924c1Johannes Berg struct cfg80211_chan_def chandef; 552448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg 567a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 577a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 582448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* Reset own TSF to allow time synchronization work. */ 5937a41b4affa33bb237d3692bf51f1b5ebcaf29d8Eliad Peller drv_reset_tsf(local, sdata); 60469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 61af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb = ifibss->skb; 62a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(ifibss->presp, NULL); 63af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 64af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb->data = skb->head; 65af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb->len = 0; 66af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb_reset_tail_pointer(skb); 67af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg skb_reserve(skb, sdata->local->hw.extra_tx_headroom); 68469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 69b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(ifibss->bssid, bssid)) 70af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sta_info_flush(sdata->local, sdata); 71469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7249b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg /* if merging, indicate to driver that we leave the old IBSS */ 7349b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg if (sdata->vif.bss_conf.ibss_joined) { 7449b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 75c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan sdata->vif.bss_conf.ibss_creator = false; 7686a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_off(sdata->dev); 7749b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IBSS); 7849b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg } 7949b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg 80af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0; 81469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 824bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg cfg80211_chandef_create(&chandef, chan, ifibss->channel_type); 834bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef)) { 844bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg chandef.width = NL80211_CHAN_WIDTH_20; 854bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg chandef.center_freq1 = chan->center_freq; 864bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg } 8755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 8855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg ieee80211_vif_release_channel(sdata); 894bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg if (ieee80211_vif_use_channel(sdata, &chandef, 9055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg ifibss->fixed_channel ? 9155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg IEEE80211_CHANCTX_SHARED : 9255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg IEEE80211_CHANCTX_EXCLUSIVE)) { 9355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg sdata_info(sdata, "Failed to join IBSS, no channel context\n"); 9455de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return; 9513c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 9655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 9755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg memcpy(ifibss->bssid, bssid, ETH_ALEN); 9857c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 99af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sband = local->hw.wiphy->bands[chan->band]; 100469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 101b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg /* build supported rates array */ 102b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg pos = supp_rates; 103b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < sband->n_bitrates; i++) { 104b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = sband->bitrates[i].bitrate; 105b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 basic = 0; 106b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (basic_rates & BIT(i)) 107b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic = 0x80; 108b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg *pos++ = basic | (u8) (rate / 5); 109b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 110b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 111469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Build IBSS probe response */ 112af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mgmt = (void *) skb_put(skb, 24 + sizeof(mgmt->u.beacon)); 113469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); 114469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 115469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_STYPE_PROBE_RESP); 116e83e6541cee0a12bc445b0f4fad5214df5803087Johannes Berg eth_broadcast_addr(mgmt->da); 11747846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 118469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 11957c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_int); 120707c1b4e68a2811ff2c9e75750a98a3310789a2dSujith mgmt->u.beacon.timestamp = cpu_to_le64(tsf); 121469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->u.beacon.capab_info = cpu_to_le16(capability); 122469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 123469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + ifibss->ssid_len); 124469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SSID; 125469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = ifibss->ssid_len; 126469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, ifibss->ssid, ifibss->ssid_len); 127469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 128b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates; 129469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (rates > 8) 130469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rates = 8; 131469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 132469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SUPP_RATES; 133469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 134469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, supp_rates, rates); 135469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 136469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sband->band == IEEE80211_BAND_2GHZ) { 137469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 1); 138469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_DS_PARAMS; 139469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 1; 140af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg *pos++ = ieee80211_frequency_to_channel(chan->center_freq); 141469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 142469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 143469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + 2); 144469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_IBSS_PARAMS; 145469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 2; 146469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* FIX: set ATIM window based on scan results */ 147469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 148469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 149469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 150b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->n_bitrates > 8) { 151b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg rates = sband->n_bitrates - 8; 152469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = skb_put(skb, 2 + rates); 153469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 154469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 155469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, &supp_rates[8], rates); 156469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 157469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 158af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->ie_len) 159af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(skb_put(skb, ifibss->ie_len), 160af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ifibss->ie, ifibss->ie_len); 161af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 16213c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* add HT capability and information IEs */ 1634bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg if (chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 164683b6d3b31a51956ea540df00abb0b78894924c1Johannes Berg sband->ht_cap.ht_supported) { 16513c40c54682ffe62977f670681268a26d500d6faAlexander Simon pos = skb_put(skb, 4 + 16613c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(struct ieee80211_ht_cap) + 167074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg sizeof(struct ieee80211_ht_operation)); 16813c40c54682ffe62977f670681268a26d500d6faAlexander Simon pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 16913c40c54682ffe62977f670681268a26d500d6faAlexander Simon sband->ht_cap.cap); 1700d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan /* 1710d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan * Note: According to 802.11n-2009 9.13.3.1, HT Protection 1720d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan * field and RIFS Mode are reserved in IBSS mode, therefore 1730d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan * keep them at 0 1740d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan */ 175074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg pos = ieee80211_ie_build_ht_oper(pos, &sband->ht_cap, 1764bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg &chandef, 0); 17713c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 17813c40c54682ffe62977f670681268a26d500d6faAlexander Simon 17932c5057b22a60b23353dda93c57e475856ca286cJohannes Berg if (local->hw.queues >= IEEE80211_NUM_ACS) { 1809eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf pos = skb_put(skb, 9); 1819eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = WLAN_EID_VENDOR_SPECIFIC; 1829eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 7; /* len */ 1839eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ 1849eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x50; 1859eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0xf2; 1869eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 2; /* WME */ 1879eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* WME info */ 1889eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 1; /* WME ver */ 1899eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* U-APSD no in use */ 1909eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 1919eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 192cf778b00e96df6d64f8e21b8395d1f8a859ecdc7Eric Dumazet rcu_assign_pointer(ifibss->presp, skb); 193469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1942d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg sdata->vif.bss_conf.beacon_int = beacon_int; 195fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->vif.bss_conf.basic_rates = basic_rates; 1962d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change = BSS_CHANGED_BEACON_INT; 1972d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= ieee80211_reset_erp_info(sdata); 1982d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BSSID; 1992d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON; 2002d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON_ENABLED; 201392cfdb10dab6c7dfa5fed18d8a44d7453d42196Teemu Paasikivi bss_change |= BSS_CHANGED_BASIC_RATES; 20213c40c54682ffe62977f670681268a26d500d6faAlexander Simon bss_change |= BSS_CHANGED_HT; 2038fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg bss_change |= BSS_CHANGED_IBSS; 2048fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = true; 205c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan sdata->vif.bss_conf.ibss_creator = creator; 2062d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg ieee80211_bss_info_change_notify(sdata, bss_change); 207469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 208b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg ieee80211_sta_def_wmm_params(sdata, sband->n_bitrates, supp_rates); 209469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 210469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ifibss->state = IEEE80211_IBSS_MLME_JOINED; 211af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 212af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 213469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 214273686d664daae1aa728b76e45720273b26dd876Johannes Berg bss = cfg80211_inform_bss_frame(local->hw.wiphy, chan, 215f446d10f214091408b7300f15c9adf60569edf28Johannes Berg mgmt, skb->len, 0, GFP_KERNEL); 216f446d10f214091408b7300f15c9adf60569edf28Johannes Berg cfg80211_put_bss(bss); 21786a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_on(sdata->dev); 218af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL); 219469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 220469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 221af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 222af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_bss *bss) 223469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 2240c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss = 2250c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg container_of((void *)bss, struct cfg80211_bss, priv); 226b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg struct ieee80211_supported_band *sband; 227b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u32 basic_rates; 228b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int i, j; 2290c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg u16 beacon_int = cbss->beacon_interval; 23057c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2317a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 2327a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 23357c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg if (beacon_int < 10) 23457c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int = 10; 23557c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2360c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sband = sdata->local->hw.wiphy->bands[cbss->channel->band]; 237b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 238b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates = 0; 239b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 240b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < bss->supp_rates_len; i++) { 241b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = (bss->supp_rates[i] & 0x7f) * 5; 242b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg bool is_basic = !!(bss->supp_rates[i] & 0x80); 243b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 244b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (j = 0; j < sband->n_bitrates; j++) { 245b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->bitrates[j].bitrate == rate) { 246b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (is_basic) 247b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates |= BIT(j); 248b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg break; 249b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 250b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 251b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 252b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 2530c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg __ieee80211_sta_join_ibss(sdata, cbss->bssid, 25457c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int, 2550c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->channel, 256b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates, 2570c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->capability, 258c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan cbss->tsf, 259c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan false); 260469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 261469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 2626d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartullistatic struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta, 2636d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli bool auth) 2648bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg __acquires(RCU) 2658bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg{ 2668bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_sub_if_data *sdata = sta->sdata; 2678bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg u8 addr[ETH_ALEN]; 2688bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 2698bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg memcpy(addr, sta->sta.addr, ETH_ALEN); 2708bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 271bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "Adding new IBSS station %pM\n", addr); 2728bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 27383d5cc012441531ab0bf6f99881958e964e9cf11Johannes Berg sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 27483d5cc012441531ab0bf6f99881958e964e9cf11Johannes Berg sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 275267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli /* authorize the station only if the network is not RSN protected. If 276267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli * not wait for the userspace to authorize it */ 277267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli if (!sta->sdata->u.ibss.control_port) 278267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); 2798bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 2808bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rate_control_rate_init(sta); 2818bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 2828bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* If it fails, maybe we raced another insertion? */ 2838bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (sta_info_insert_rcu(sta)) 2848bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return sta_info_get(sdata, addr); 285452a6d22615bb8262a932b362f41fc5d89f03293Will Hawkins if (auth && !sdata->u.ibss.auth_frame_registrations) { 286bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 287bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "TX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=1)\n", 2882514ec86531481713036081e93a353bbd02e542bSylvain Roger Rieunier sdata->vif.addr, addr, sdata->u.ibss.bssid); 289700e8ea6770df3113e735bcc76ecd6ffac71a13cJouni Malinen ieee80211_send_auth(sdata, 1, WLAN_AUTH_OPEN, 0, NULL, 0, 2906d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli addr, sdata->u.ibss.bssid, NULL, 0, 0); 2916d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli } 2928bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return sta; 2938bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg} 2948bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 2958bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergstatic struct sta_info * 2968bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, 2978bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg const u8 *bssid, const u8 *addr, 2986d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli u32 supp_rates, bool auth) 2998bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg __acquires(RCU) 3008bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg{ 3018bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3028bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_local *local = sdata->local; 3038bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 30455de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 30555de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg int band; 3068bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3078bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* 3088bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg * XXX: Consider removing the least recently used entry and 3098bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg * allow new one to be added. 3108bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg */ 3118bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 312bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg net_info_ratelimited("%s: No room for a new IBSS STA entry %pM\n", 313e87cc4728f0e2fb663e592a1141742b1d6c63256Joe Perches sdata->name, addr); 3148bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3158bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3168bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3178bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3188bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) { 3198bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3208bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3218bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3228bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 323b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(bssid, sdata->u.ibss.bssid)) { 3248bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3258bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3268bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3278bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 32855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_lock(); 32955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 33055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (WARN_ON_ONCE(!chanctx_conf)) 33155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return NULL; 3324bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg band = chanctx_conf->def.chan->band; 33355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 33455de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 3358bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = sta_info_alloc(sdata, addr, GFP_KERNEL); 3368bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (!sta) { 3378bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3388bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3398bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3408bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3418bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta->last_rx = jiffies; 3428bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3438bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* make sure mandatory rates are always added */ 3448bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta->sta.supp_rates[band] = supp_rates | 3458bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg ieee80211_mandatory_rates(local, band); 3468bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3476d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli return ieee80211_ibss_finish_sta(sta, auth); 3486d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli} 3496d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3502cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartullistatic void ieee80211_rx_mgmt_deauth_ibss(struct ieee80211_sub_if_data *sdata, 3512cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli struct ieee80211_mgmt *mgmt, 3522cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli size_t len) 3532cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli{ 3542cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli u16 reason = le16_to_cpu(mgmt->u.deauth.reason_code); 3552cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 3562cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli if (len < IEEE80211_DEAUTH_FRAME_LEN) 3572cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli return; 3582cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 3592cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli ibss_dbg(sdata, "RX DeAuth SA=%pM DA=%pM BSSID=%pM (reason: %d)\n", 3602cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli mgmt->sa, mgmt->da, mgmt->bssid, reason); 3612cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli sta_info_destroy_addr(sdata, mgmt->sa); 3622cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli} 3632cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 3646d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartullistatic void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, 3656d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli struct ieee80211_mgmt *mgmt, 3666d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli size_t len) 3676d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli{ 3686d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli u16 auth_alg, auth_transaction; 3692cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli struct sta_info *sta; 3702cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli u8 deauth_frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; 3716d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3726d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli lockdep_assert_held(&sdata->u.ibss.mtx); 3736d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3746d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli if (len < 24 + 6) 3756d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli return; 3766d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3776d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); 3786d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); 3796d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 380bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 381bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "RX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=%d)\n", 382bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa, mgmt->da, mgmt->bssid, auth_transaction); 3837bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli 3847bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) 3857bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli return; 3867bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli 3876d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli sta_info_destroy_addr(sdata, mgmt->sa); 3882cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 0, false); 3896d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli rcu_read_unlock(); 3906d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3916d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli /* 3922cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli * if we have any problem in allocating the new station, we reply with a 3932cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli * DEAUTH frame to tell the other end that we had a problem 3942cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli */ 3952cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli if (!sta) { 3962cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli ieee80211_send_deauth_disassoc(sdata, sdata->u.ibss.bssid, 3972cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli IEEE80211_STYPE_DEAUTH, 3982cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli WLAN_REASON_UNSPECIFIED, true, 3992cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli deauth_frame_buf); 4002cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli return; 4012cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli } 4022cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 4032cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli /* 4046d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * IEEE 802.11 standard does not require authentication in IBSS 4056d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * networks and most implementations do not seem to use it. 4066d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * However, try to reply to authentication attempts if someone 4076d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * has actually implemented this. 4086d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli */ 409700e8ea6770df3113e735bcc76ecd6ffac71a13cJouni Malinen ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, 0, NULL, 0, 4106d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli mgmt->sa, sdata->u.ibss.bssid, NULL, 0, 0); 4118bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg} 4128bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 413469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, 414469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 415469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 416469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status, 417469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems *elems, 418469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bool beacon) 419469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 420469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 421469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int freq; 4220c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 423469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_bss *bss; 424469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 425469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_channel *channel; 426469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u64 beacon_timestamp, rx_timestamp; 427469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u32 supp_rates = 0; 428469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg enum ieee80211_band band = rx_status->band; 42913c40c54682ffe62977f670681268a26d500d6faAlexander Simon struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; 43013c40c54682ffe62977f670681268a26d500d6faAlexander Simon bool rates_updated = false; 431469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 432469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ds_params && elems->ds_params_len == 1) 43359eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf freq = ieee80211_channel_to_frequency(elems->ds_params[0], 43459eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf band); 435469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 436469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg freq = rx_status->freq; 437469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 438469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel = ieee80211_get_channel(local->hw.wiphy, freq); 439469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 440469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 441469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 442469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4439eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sdata->vif.type == NL80211_IFTYPE_ADHOC && 444b203ca39126bad99583c908be587df067820a1eaJoe Perches ether_addr_equal(mgmt->bssid, sdata->u.ibss.bssid)) { 445469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 446469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 447abe60632f311d515b082b450504ee24006023951Johannes Berg sta = sta_info_get(sdata, mgmt->sa); 448469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4499eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (elems->supp_rates) { 4509eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, 4519ebb61a23d90703344fc609fbee8da67b1e7456cAshok Nagarajan band, NULL); 4529eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta) { 4539eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf u32 prev_rates; 4549eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 4559eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates = sta->sta.supp_rates[band]; 4569eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf /* make sure mandatory rates are always added */ 4579eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band] = supp_rates | 4589eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf ieee80211_mandatory_rates(local, band); 459469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4609eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta->sta.supp_rates[band] != prev_rates) { 461bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 462bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "updated supp_rates set for %pM based on beacon/probe_resp (0x%x -> 0x%x)\n", 463bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sta->sta.addr, prev_rates, 464bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sta->sta.supp_rates[band]); 46513c40c54682ffe62977f670681268a26d500d6faAlexander Simon rates_updated = true; 4669eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 4678bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } else { 4688bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 4699eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, 4706d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli mgmt->sa, supp_rates, true); 4718bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 47234e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg } 4739eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 4749eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta && elems->wmm_info) 475c2c98fdeb5c897499644eb247285c8e3dacc6450Johannes Berg set_sta_flag(sta, WLAN_STA_WME); 4769eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 477074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg if (sta && elems->ht_operation && elems->ht_cap_elem && 47813c40c54682ffe62977f670681268a26d500d6faAlexander Simon sdata->u.ibss.channel_type != NL80211_CHAN_NO_HT) { 47913c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* we both use HT */ 48013c40c54682ffe62977f670681268a26d500d6faAlexander Simon struct ieee80211_sta_ht_cap sta_ht_cap_new; 4814bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg struct cfg80211_chan_def chandef; 4824bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg 4834bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg ieee80211_ht_oper_to_chandef(channel, 4844bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg elems->ht_operation, 4854bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg &chandef); 48613c40c54682ffe62977f670681268a26d500d6faAlexander Simon 48713c40c54682ffe62977f670681268a26d500d6faAlexander Simon ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 48813c40c54682ffe62977f670681268a26d500d6faAlexander Simon elems->ht_cap_elem, 48913c40c54682ffe62977f670681268a26d500d6faAlexander Simon &sta_ht_cap_new); 49013c40c54682ffe62977f670681268a26d500d6faAlexander Simon 49113c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* 49213c40c54682ffe62977f670681268a26d500d6faAlexander Simon * fall back to HT20 if we don't use or use 49313c40c54682ffe62977f670681268a26d500d6faAlexander Simon * the other extension channel 49413c40c54682ffe62977f670681268a26d500d6faAlexander Simon */ 4954bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg if (chandef.width != NL80211_CHAN_WIDTH_40 || 4964bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg cfg80211_get_chandef_type(&chandef) != 4974bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg sdata->u.ibss.channel_type) 49813c40c54682ffe62977f670681268a26d500d6faAlexander Simon sta_ht_cap_new.cap &= 49913c40c54682ffe62977f670681268a26d500d6faAlexander Simon ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; 50013c40c54682ffe62977f670681268a26d500d6faAlexander Simon 50113c40c54682ffe62977f670681268a26d500d6faAlexander Simon if (memcmp(&sta->sta.ht_cap, &sta_ht_cap_new, 50213c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(sta_ht_cap_new))) { 50313c40c54682ffe62977f670681268a26d500d6faAlexander Simon memcpy(&sta->sta.ht_cap, &sta_ht_cap_new, 50413c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(sta_ht_cap_new)); 50513c40c54682ffe62977f670681268a26d500d6faAlexander Simon rates_updated = true; 50613c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 50713c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 50813c40c54682ffe62977f670681268a26d500d6faAlexander Simon 509e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli if (sta && rates_updated) { 510e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli drv_sta_rc_update(local, sdata, &sta->sta, 511e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli IEEE80211_RC_SUPP_RATES_CHANGED); 51213c40c54682ffe62977f670681268a26d500d6faAlexander Simon rate_control_rate_init(sta); 513e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli } 51413c40c54682ffe62977f670681268a26d500d6faAlexander Simon 5159eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf rcu_read_unlock(); 516469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 517469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 518469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, 519469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel, beacon); 520469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!bss) 521469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 522469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5230c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = container_of((void *)bss, struct cfg80211_bss, priv); 5240c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 525469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* was just updated in ieee80211_bss_info_update */ 5260c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg beacon_timestamp = cbss->tsf; 527469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 528469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* check if we need to merge IBSS */ 529469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 530469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* we use a fixed BSSID */ 531a98bfec2985221d8e0904a526cbe88590eaad2a6Benoit Papillault if (sdata->u.ibss.fixed_bssid) 532469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 533469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 534469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* not an IBSS */ 5350c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (!(cbss->capability & WLAN_CAPABILITY_IBSS)) 536469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 537469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 538469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different channel */ 53955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (sdata->u.ibss.fixed_channel && 54055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg sdata->u.ibss.channel != cbss->channel) 541469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 542469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 543469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different SSID */ 544469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ssid_len != sdata->u.ibss.ssid_len || 545469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(elems->ssid, sdata->u.ibss.ssid, 546469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->u.ibss.ssid_len)) 547469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 548469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 54934e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen /* same BSSID */ 550b203ca39126bad99583c908be587df067820a1eaJoe Perches if (ether_addr_equal(cbss->bssid, sdata->u.ibss.bssid)) 55134e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen goto put_bss; 55234e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen 553f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen if (ieee80211_have_rx_timestamp(rx_status)) { 554f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen /* time when timestamp field was received */ 555f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen rx_timestamp = 556f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen ieee80211_calculate_rx_timestamp(local, rx_status, 557f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen len + FCS_LEN, 24); 5582448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } else { 5592448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* 5602448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * second best option: get current TSF 5612448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * (will return -1 if not supported) 5622448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg */ 56337a41b4affa33bb237d3692bf51f1b5ebcaf29d8Eliad Peller rx_timestamp = drv_get_tsf(local, sdata); 5642448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } 565469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 566bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 567bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "RX beacon SA=%pM BSSID=%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", 568bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa, mgmt->bssid, 569bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg (unsigned long long)rx_timestamp, 570bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg (unsigned long long)beacon_timestamp, 571bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg (unsigned long long)(rx_timestamp - beacon_timestamp), 572bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg jiffies); 573469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 574469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (beacon_timestamp > rx_timestamp) { 575bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 576bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "beacon TSF higher than local TSF - IBSS merge with BSSID %pM\n", 577bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->bssid); 578469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_join_ibss(sdata, bss); 5799ebb61a23d90703344fc609fbee8da67b1e7456cAshok Nagarajan supp_rates = ieee80211_sta_get_rates(local, elems, band, NULL); 58034e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 5816d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli supp_rates, true); 5828bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 583469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 584469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 585469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg put_bss: 586469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 587469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 588469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5898bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergvoid ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 5908bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg const u8 *bssid, const u8 *addr, 5918bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg u32 supp_rates) 592469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 5932e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 594469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 595469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 59655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 59755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg int band; 598469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 599af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* 600af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * XXX: Consider removing the least recently used entry and 601af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * allow new one to be added. 602af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg */ 603469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 604bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg net_info_ratelimited("%s: No room for a new IBSS STA entry %pM\n", 605e87cc4728f0e2fb663e592a1141742b1d6c63256Joe Perches sdata->name, addr); 6068bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 607469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 608469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6092e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) 6108bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 6112e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau 612b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(bssid, sdata->u.ibss.bssid)) 6138bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 614469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 61555de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_lock(); 61655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 61755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (WARN_ON_ONCE(!chanctx_conf)) { 61855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 61955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return; 62055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg } 6214bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg band = chanctx_conf->def.chan->band; 62255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 62355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 6248bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); 625469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!sta) 6268bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 627469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 628c8716d9dc13c7f6ee92f2bfc6cc3b723b417bff8Rajkumar Manoharan sta->last_rx = jiffies; 629d9a7ddb05e5419ca5e4b54f57074dc33c7ea991cJohannes Berg 630469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* make sure mandatory rates are always added */ 631469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sta->sta.supp_rates[band] = supp_rates | 632469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_mandatory_rates(local, band); 633469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6348bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock(&ifibss->incomplete_lock); 6358bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_add(&sta->list, &ifibss->incomplete_stations); 6368bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock(&ifibss->incomplete_lock); 6378bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 638469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 639469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 640469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) 641469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 642469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 643469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active = 0; 644469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 645469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6467a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&sdata->u.ibss.mtx); 6477a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 648469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 649469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 650469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg list_for_each_entry_rcu(sta, &local->sta_list, list) { 651469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta->sdata == sdata && 652469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, 653469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies)) { 654469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active++; 655469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 656469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 657469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 658469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 659469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_unlock(); 660469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 661469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return active; 662469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 663469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 664ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 665ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_JOINED 666ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 667469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 668469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) 669469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 670469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 671469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6727a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 6737a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 674af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 675af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 676469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 677469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); 678af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 679450aae3d7b60a970f266349a837dfb30a539198bSujith if (time_before(jiffies, ifibss->last_scan_completed + 680450aae3d7b60a970f266349a837dfb30a539198bSujith IEEE80211_IBSS_MERGE_INTERVAL)) 681450aae3d7b60a970f266349a837dfb30a539198bSujith return; 682450aae3d7b60a970f266349a837dfb30a539198bSujith 683469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ieee80211_sta_active_ibss(sdata)) 684469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 685469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 686c037b8367c7e2b775a99d74037f5df014d2fbf06John W. Linville if (ifibss->fixed_channel) 687469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 688469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 689bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, 690bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge)\n"); 691469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 692be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 693c037b8367c7e2b775a99d74037f5df014d2fbf06John W. Linville ifibss->ssid, ifibss->ssid_len, NULL); 694469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 695469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 696af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) 697469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 698469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 699469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 bssid[ETH_ALEN]; 700469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 capability; 701469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int i; 702469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7037a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 7047a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 705af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) { 706469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(bssid, ifibss->bssid, ETH_ALEN); 707469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } else { 708469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Generate random, not broadcast, locally administered BSSID. Mix in 709469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * own MAC address to make sure that devices that do not have proper 710469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * random number generator get different BSSID. */ 711469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg get_random_bytes(bssid, ETH_ALEN); 712469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg for (i = 0; i < ETH_ALEN; i++) 71347846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg bssid[i] ^= sdata->vif.addr[i]; 714469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] &= ~0x01; 715469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] |= 0x02; 716469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 717469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 718bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, "Creating new IBSS network, BSSID %pM\n", bssid); 719469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 720469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability = WLAN_CAPABILITY_IBSS; 721469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 722fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 723469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 724469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 725469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->drop_unencrypted = 0; 726469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 72757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int, 728fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi ifibss->channel, ifibss->basic_rates, 729c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan capability, 0, true); 730469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 731469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 732ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 733ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_SEARCH 734ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 735ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault 736af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) 737469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 738469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 739469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 7400c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 741af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan = NULL; 742469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg const u8 *bssid = NULL; 743469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active_ibss; 744e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg u16 capability; 745469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7467a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 7477a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 748469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active_ibss = ieee80211_sta_active_ibss(sdata); 749bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "sta_find_ibss (active_ibss=%d)\n", active_ibss); 750469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 751469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (active_ibss) 752af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 753469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 754e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability = WLAN_CAPABILITY_IBSS; 755fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 756e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 757af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) 758af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg bssid = ifibss->bssid; 759af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 760af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg chan = ifibss->channel; 761af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!is_zero_ether_addr(ifibss->bssid)) 762469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid = ifibss->bssid; 7630c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid, 7640c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg ifibss->ssid, ifibss->ssid_len, 7650c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY, 7660c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg capability); 7670c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 7680c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss) { 7690c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct ieee80211_bss *bss; 770469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7710c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg bss = (void *)cbss->priv; 772bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 773bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "sta_find_ibss: selected %pM current %pM\n", 774bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg cbss->bssid, ifibss->bssid); 775bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, 776bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "Selected IBSS BSSID %pM based on configured SSID\n", 777bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg cbss->bssid); 778469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 779af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_join_ibss(sdata, bss); 780469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 781af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 782d419b9f0fa69e79ccba3e5e79a58a52ae0c2ed6aReinette Chatre } 783469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 784bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "sta_find_ibss: did not try to join ibss\n"); 785469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 786469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Selected IBSS not found in current scan results - try to scan */ 787ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault if (time_after(jiffies, ifibss->last_scan_completed + 788469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_SCAN_INTERVAL)) { 789bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, "Trigger new scan to find an IBSS to join\n"); 790469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 791be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ieee80211_request_internal_scan(sdata, 792be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->ssid, ifibss->ssid_len, 793be4a4b6a5d2f76393f545a2545fbaa1b65577e13Johannes Berg ifibss->fixed_channel ? ifibss->channel : NULL); 794ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault } else { 795469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int interval = IEEE80211_SCAN_INTERVAL; 796469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 797469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (time_after(jiffies, ifibss->ibss_join_req + 79855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg IEEE80211_IBSS_JOIN_TIMEOUT)) 79955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg ieee80211_sta_create_ibss(sdata); 800469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 801af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 802af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + interval)); 803469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 804469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 805469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 806469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, 807c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct sk_buff *req) 808469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 809c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct ieee80211_mgmt *mgmt = (void *)req->data; 810469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 811469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 812c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg int tx_last_beacon, len = req->len; 813469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 814469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *resp; 81540b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg struct sk_buff *presp; 816469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos, *end; 817469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8187a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg lockdep_assert_held(&ifibss->mtx); 8197a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 82040b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg presp = rcu_dereference_protected(ifibss->presp, 82140b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg lockdep_is_held(&ifibss->mtx)); 82240b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg 823469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ifibss->state != IEEE80211_IBSS_MLME_JOINED || 82440b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg len < 24 + 2 || !presp) 825469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 826469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8272448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg tx_last_beacon = drv_tx_last_beacon(local); 828469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 829bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 830bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "RX ProbeReq SA=%pM DA=%pM BSSID=%pM (tx_last_beacon=%d)\n", 831bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa, mgmt->da, mgmt->bssid, tx_last_beacon); 832469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8331ed76487ce115110171480deabd3cd4656f9803eFelix Fietkau if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da)) 834469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 835469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 836b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(mgmt->bssid, ifibss->bssid) && 837888d04dfbe7e09f930fdaafb257cce2c54c9c3f3Felix Fietkau !is_broadcast_ether_addr(mgmt->bssid)) 838469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 839469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 840469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg end = ((u8 *) mgmt) + len; 841469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = mgmt->u.probe_req.variable; 842469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[0] != WLAN_EID_SSID || 843469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos + 2 + pos[1] > end) { 844bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "Invalid SSID IE in ProbeReq from %pM\n", 845bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa); 846469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 847469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 848469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[1] != 0 && 849469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (pos[1] != ifibss->ssid_len || 8500da780c269957783d341fc3559e6b4c9912af7b4Benoit Papillault memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) { 851469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Ignore ProbeReq for foreign SSID */ 852469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 853469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 854469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 855469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Reply with ProbeResp */ 85640b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg skb = skb_copy(presp, GFP_KERNEL); 857469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!skb) 858469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 859469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 860469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg resp = (struct ieee80211_mgmt *) skb->data; 861469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(resp->da, mgmt->sa, ETH_ALEN); 862bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "Sending ProbeResp to %pM\n", resp->da); 86362ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 86462ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg ieee80211_tx_skb(sdata, skb); 865469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 866469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 867469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, 868469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 869469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 870469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 871469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 872469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 873469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 874469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 875469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 876469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 877469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 878469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 879469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 880469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg &elems); 881469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 882469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); 883469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 884469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 885469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, 886469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt, 887469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t len, 888469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status) 889469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 890469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 891469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 892469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 893469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Process beacon from the current BSS */ 894469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; 895469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 896469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 897469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 898469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); 899469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 900469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); 901469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 902469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9031fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 9041fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct sk_buff *skb) 905469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 906469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status; 907469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 908469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 fc; 909469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 910f1d58c2521eb160178b2151d6326d8dc5d7c8560Johannes Berg rx_status = IEEE80211_SKB_RXCB(skb); 911469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt = (struct ieee80211_mgmt *) skb->data; 912469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg fc = le16_to_cpu(mgmt->frame_control); 913469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9147a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 9157a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 916c926d006c1514cfb3572893f41f2324e96823661Tim Harvey if (!sdata->u.ibss.ssid_len) 917c926d006c1514cfb3572893f41f2324e96823661Tim Harvey goto mgmt_out; /* not ready to merge yet */ 918c926d006c1514cfb3572893f41f2324e96823661Tim Harvey 919469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (fc & IEEE80211_FCTL_STYPE) { 920469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_REQ: 921c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg ieee80211_rx_mgmt_probe_req(sdata, skb); 922469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 923469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_RESP: 924469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, 925469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 926469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 927469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_BEACON: 928469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, 929469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rx_status); 930469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 931469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_AUTH: 932469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_auth_ibss(sdata, mgmt, skb->len); 933469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 9342cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli case IEEE80211_STYPE_DEAUTH: 9352cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli ieee80211_rx_mgmt_deauth_ibss(sdata, mgmt, skb->len); 9362cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli break; 937469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 9387a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 939c926d006c1514cfb3572893f41f2324e96823661Tim Harvey mgmt_out: 9407a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 941469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 942469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9431fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata) 944469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 9451fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 9468bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 947469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9487a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&ifibss->mtx); 9497a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 9507a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg /* 9517a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * Work could be scheduled after scan or similar 9527a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * when we aren't even joined (or trying) with a 9537a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * network. 9547a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg */ 9557a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!ifibss->ssid_len) 9567a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg goto out; 957469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9588bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 9598bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg while (!list_empty(&ifibss->incomplete_stations)) { 9608bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = list_first_entry(&ifibss->incomplete_stations, 9618bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info, list); 9628bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_del(&sta->list); 9638bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 9648bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 9656d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli ieee80211_ibss_finish_sta(sta, true); 9668bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 9678bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 9688bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 9698bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 9708bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 971469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (ifibss->state) { 972469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_SEARCH: 973469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_find_ibss(sdata); 974469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 975469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_JOINED: 976469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_merge_ibss(sdata); 977469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 978469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg default: 979469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg WARN_ON(1); 980469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 981469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 982469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9837a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg out: 9847a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&ifibss->mtx); 9853a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg} 9863a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg 987469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_ibss_timer(unsigned long data) 988469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 989469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_sub_if_data *sdata = 990469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (struct ieee80211_sub_if_data *) data; 991469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 992469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 993469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9945bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (local->quiescing) { 9955bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 9965bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg return; 9975bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 9985bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 9997a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 1000469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1001469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 10025bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#ifdef CONFIG_PM 10035bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata) 10045bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 10055bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 10065bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 10075bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (del_timer_sync(&ifibss->timer)) 10085bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = true; 10095bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 10105bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 10115bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata) 10125bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{ 10135bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 10145bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 10155bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg if (ifibss->timer_running) { 10165bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg add_timer(&ifibss->timer); 10175bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg ifibss->timer_running = false; 10185bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg } 10195bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 10205bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#endif 10215bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 1022469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata) 1023469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 1024469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 1025469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1026469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg setup_timer(&ifibss->timer, ieee80211_ibss_timer, 1027469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long) sdata); 10287a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_init(&ifibss->mtx); 10298bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg INIT_LIST_HEAD(&ifibss->incomplete_stations); 10308bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_init(&ifibss->incomplete_lock); 1031469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1032469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1033469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* scan finished notification */ 1034469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local) 1035469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 1036af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_sub_if_data *sdata; 1037469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 103829b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_lock(&local->iflist_mtx); 103929b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 10409607e6b66a0d25ca63b70d54a4283fa13d8f7c9dJohannes Berg if (!ieee80211_sdata_running(sdata)) 10410e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg continue; 1042af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_ADHOC) 1043af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg continue; 1044af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.last_scan_completed = jiffies; 10457a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 1046469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 104729b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_unlock(&local->iflist_mtx); 1048469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1049469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1050af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1051af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct cfg80211_ibss_params *params) 1052af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 1053af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 1054ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich u32 changed = 0; 1055af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 10567a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom + 105713c40c54682ffe62977f670681268a26d500d6faAlexander Simon sizeof(struct ieee80211_hdr_3addr) + 105813c40c54682ffe62977f670681268a26d500d6faAlexander Simon 12 /* struct ieee80211_mgmt.u.beacon */ + 105913c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + IEEE80211_MAX_SSID_LEN /* max SSID */ + 106013c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + 8 /* max Supported Rates */ + 106113c40c54682ffe62977f670681268a26d500d6faAlexander Simon 3 /* max DS params */ + 106213c40c54682ffe62977f670681268a26d500d6faAlexander Simon 4 /* IBSS params */ + 106313c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + (IEEE80211_MAX_SUPP_RATES - 8) + 106413c40c54682ffe62977f670681268a26d500d6faAlexander Simon 2 + sizeof(struct ieee80211_ht_cap) + 1065074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg 2 + sizeof(struct ieee80211_ht_operation) + 10667a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg params->ie_len); 10677a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!skb) 10687a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg return -ENOMEM; 10697a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 10707a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 10717a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 1072af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->bssid) { 1073af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN); 1074af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = true; 1075af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } else 1076af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = false; 1077af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1078fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.privacy = params->privacy; 1079267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli sdata->u.ibss.control_port = params->control_port; 1080fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->u.ibss.basic_rates = params->basic_rates; 1081dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate, 1082dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau sizeof(params->mcast_rate)); 1083fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg 108457c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg sdata->vif.bss_conf.beacon_int = params->beacon_interval; 108557c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 1086683b6d3b31a51956ea540df00abb0b78894924c1Johannes Berg sdata->u.ibss.channel = params->chandef.chan; 1087683b6d3b31a51956ea540df00abb0b78894924c1Johannes Berg sdata->u.ibss.channel_type = 1088683b6d3b31a51956ea540df00abb0b78894924c1Johannes Berg cfg80211_get_chandef_type(¶ms->chandef); 1089af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_channel = params->channel_fixed; 1090af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1091af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->ie) { 1092af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len, 1093af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg GFP_KERNEL); 1094af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->u.ibss.ie) 1095af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie_len = params->ie_len; 1096af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 1097af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1098af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.skb = skb; 1099af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 1100af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ibss_join_req = jiffies; 1101af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1102badecb001a310408d3473b1fc2ed5aefd0bc92a9Antonio Quartulli memcpy(sdata->u.ibss.ssid, params->ssid, params->ssid_len); 11030e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg sdata->u.ibss.ssid_len = params->ssid_len; 11040e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg 11057da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->u.ibss.mtx); 11067da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg 11077da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&sdata->local->mtx); 11085cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 11097da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&sdata->local->mtx); 11105cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1111ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich /* 1112ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 802.11n-2009 9.13.3.1: In an IBSS, the HT Protection field is 1113ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * reserved, but an HT STA shall protect HT transmissions as though 1114ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * the HT Protection field were set to non-HT mixed mode. 1115ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 1116ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * In an IBSS, the RIFS Mode field of the HT Operation element is 1117ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * also reserved, but an HT STA shall operate as though this field 1118ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * were set to 1. 1119ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich */ 1120ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1121ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich sdata->vif.bss_conf.ht_operation_mode |= 1122ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 1123ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich | IEEE80211_HT_PARAM_RIFS_MODE; 1124ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1125ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich changed |= BSS_CHANGED_HT; 1126ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich ieee80211_bss_info_change_notify(sdata, changed); 1127ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 112804ecd2578e712c301fa1369d2a8f298a2b4b146aJohannes Berg sdata->smps_mode = IEEE80211_SMPS_OFF; 112904ecd2578e712c301fa1369d2a8f298a2b4b146aJohannes Berg sdata->needed_rx_chains = sdata->local->rx_chains; 113004ecd2578e712c301fa1369d2a8f298a2b4b146aJohannes Berg 113164592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&sdata->local->hw, &sdata->work); 1132af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1133af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1134af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1135af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1136af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) 1137af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 1138af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct sk_buff *skb; 11395ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 11405ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_local *local = sdata->local; 11415ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct cfg80211_bss *cbss; 11425ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi u16 capability; 11437a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg int active_ibss; 11448bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 11457a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 11467a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_lock(&sdata->u.ibss.mtx); 11475ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 1148f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 1149f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg memset(sdata->u.ibss.bssid, 0, ETH_ALEN); 1150f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg sdata->u.ibss.ssid_len = 0; 1151f3209bea110cade12e2b133da8b8499689cb0e2eJohannes Berg 11525ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi active_ibss = ieee80211_sta_active_ibss(sdata); 11535ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11545ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) { 11555ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability = WLAN_CAPABILITY_IBSS; 11565ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11575ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (ifibss->privacy) 11585ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability |= WLAN_CAPABILITY_PRIVACY; 11595ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11605ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->channel, 11615ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->bssid, ifibss->ssid, 11625ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->ssid_len, WLAN_CAPABILITY_IBSS | 11635ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi WLAN_CAPABILITY_PRIVACY, 11645ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability); 11655ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11665ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (cbss) { 11675ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_unlink_bss(local->hw.wiphy, cbss); 11685ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_put_bss(cbss); 11695ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 11705ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 1171af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1172af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sta_info_flush(sdata->local, sdata); 11738bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 11748bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 11758bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg while (!list_empty(&ifibss->incomplete_stations)) { 11768bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = list_first_entry(&ifibss->incomplete_stations, 11778bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info, list); 11788bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_del(&sta->list); 11798bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 11808bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 11818bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta_info_free(local, sta); 11828bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 11838bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 11848bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 11858bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 118686a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_off(sdata->dev); 1187af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1188af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* remove beacon */ 1189af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree(sdata->u.ibss.ie); 119040b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg skb = rcu_dereference_protected(sdata->u.ibss.presp, 119140b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg lockdep_is_held(&sdata->u.ibss.mtx)); 1192a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(sdata->u.ibss.presp, NULL); 11938fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 1194c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan sdata->vif.bss_conf.ibss_creator = false; 11958fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 11968fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg BSS_CHANGED_IBSS); 1197af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 1198af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree_skb(skb); 1199af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 120035f20c14a103ca2c7062999e934a513b83d84de6Johannes Berg skb_queue_purge(&sdata->skb_queue); 12015cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1202bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg del_timer_sync(&sdata->u.ibss.timer); 12037a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 12047a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg mutex_unlock(&sdata->u.ibss.mtx); 1205bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg 12067da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_lock(&local->mtx); 12075cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg ieee80211_recalc_idle(sdata->local); 12087da7cc1d42d8ce02cca16df8c021e6d657f1f8fdJohannes Berg mutex_unlock(&local->mtx); 1209af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1210af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1211af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1212