ibss.c revision 52874a5e3917dde3b081521b014d6e4b226aacff
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 ieee80211_mgmt *mgmt; 48469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos; 49469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_supported_band *sband; 50f446d10f214091408b7300f15c9adf60569edf28Johannes Berg struct cfg80211_bss *bss; 5157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg u32 bss_change; 52b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 53683b6d3b31a51956ea540df00abb0b78894924c1Johannes Berg struct cfg80211_chan_def chandef; 54c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg struct beacon_data *presp; 55c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg int frame_len; 562448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg 578d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 587a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 592448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* Reset own TSF to allow time synchronization work. */ 6037a41b4affa33bb237d3692bf51f1b5ebcaf29d8Eliad Peller drv_reset_tsf(local, sdata); 61469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 62b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(ifibss->bssid, bssid)) 63b998e8bb3e1c6eeae5eab9d6a434563270286c3bJohannes Berg sta_info_flush(sdata); 64469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6549b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg /* if merging, indicate to driver that we leave the old IBSS */ 6649b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg if (sdata->vif.bss_conf.ibss_joined) { 6749b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 68c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan sdata->vif.bss_conf.ibss_creator = false; 691852d40eaba36fe1e97e0e497ffce291c99f5886Johannes Berg sdata->vif.bss_conf.enable_beacon = false; 7086a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_off(sdata->dev); 711852d40eaba36fe1e97e0e497ffce291c99f5886Johannes Berg ieee80211_bss_info_change_notify(sdata, 721852d40eaba36fe1e97e0e497ffce291c99f5886Johannes Berg BSS_CHANGED_IBSS | 731852d40eaba36fe1e97e0e497ffce291c99f5886Johannes Berg BSS_CHANGED_BEACON_ENABLED); 7449b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg } 7549b5c7f473f1bbcb30275dcaee2c06dfb8ec2279Johannes Berg 76c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg presp = rcu_dereference_protected(ifibss->presp, 778d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg lockdep_is_held(&sdata->wdev.mtx)); 78c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg rcu_assign_pointer(ifibss->presp, NULL); 79c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg if (presp) 80c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg kfree_rcu(presp, rcu_head); 811852d40eaba36fe1e97e0e497ffce291c99f5886Johannes Berg 82af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0; 83469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 843aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich chandef = ifibss->chandef; 854bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef)) { 864bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg chandef.width = NL80211_CHAN_WIDTH_20; 874bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg chandef.center_freq1 = chan->center_freq; 884bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg } 8955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 9055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg ieee80211_vif_release_channel(sdata); 914bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg if (ieee80211_vif_use_channel(sdata, &chandef, 9255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg ifibss->fixed_channel ? 9355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg IEEE80211_CHANCTX_SHARED : 9455de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg IEEE80211_CHANCTX_EXCLUSIVE)) { 9555de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg sdata_info(sdata, "Failed to join IBSS, no channel context\n"); 9655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return; 9713c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 9855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 9955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg memcpy(ifibss->bssid, bssid, ETH_ALEN); 10057c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 101af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sband = local->hw.wiphy->bands[chan->band]; 102469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 103469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Build IBSS probe response */ 104c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg frame_len = sizeof(struct ieee80211_hdr_3addr) + 105c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 12 /* struct ieee80211_mgmt.u.beacon */ + 106c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 2 + IEEE80211_MAX_SSID_LEN /* max SSID */ + 107c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 2 + 8 /* max Supported Rates */ + 108c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 3 /* max DS params */ + 109c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 4 /* IBSS params */ + 110c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 2 + (IEEE80211_MAX_SUPP_RATES - 8) + 111c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 2 + sizeof(struct ieee80211_ht_cap) + 112c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 2 + sizeof(struct ieee80211_ht_operation) + 113c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg ifibss->ie_len; 114c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg presp = kzalloc(sizeof(*presp) + frame_len, GFP_KERNEL); 115c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg if (!presp) 116c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg return; 117c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 118c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg presp->head = (void *)(presp + 1); 119c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 120c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg mgmt = (void *) presp->head; 121469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | 122469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_STYPE_PROBE_RESP); 123e83e6541cee0a12bc445b0f4fad5214df5803087Johannes Berg eth_broadcast_addr(mgmt->da); 12447846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 125469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN); 12657c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_int); 127707c1b4e68a2811ff2c9e75750a98a3310789a2dSujith mgmt->u.beacon.timestamp = cpu_to_le64(tsf); 128469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt->u.beacon.capab_info = cpu_to_le16(capability); 129469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 130c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg pos = (u8 *)mgmt + offsetof(struct ieee80211_mgmt, u.beacon.variable); 131c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 132469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SSID; 133469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = ifibss->ssid_len; 134469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(pos, ifibss->ssid, ifibss->ssid_len); 135c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg pos += ifibss->ssid_len; 136469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 137c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg rates = min_t(int, 8, sband->n_bitrates); 138469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_SUPP_RATES; 139469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = rates; 140c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg for (i = 0; i < rates; i++) { 141c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg int rate = sband->bitrates[i].bitrate; 142c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg u8 basic = 0; 143c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg if (basic_rates & BIT(i)) 144c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg basic = 0x80; 145c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg *pos++ = basic | (u8) (rate / 5); 146c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg } 147469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 148469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sband->band == IEEE80211_BAND_2GHZ) { 149469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_DS_PARAMS; 150469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 1; 151af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg *pos++ = ieee80211_frequency_to_channel(chan->center_freq); 152469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 153469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 154469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_IBSS_PARAMS; 155469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 2; 156469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* FIX: set ATIM window based on scan results */ 157469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 158469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = 0; 159469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 160b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->n_bitrates > 8) { 161469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg *pos++ = WLAN_EID_EXT_SUPP_RATES; 162c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg *pos++ = sband->n_bitrates - 8; 163c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg for (i = 8; i < sband->n_bitrates; i++) { 164c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg int rate = sband->bitrates[i].bitrate; 165c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg u8 basic = 0; 166c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg if (basic_rates & BIT(i)) 167c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg basic = 0x80; 168c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg *pos++ = basic | (u8) (rate / 5); 169c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg } 170469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 171469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 172c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg if (ifibss->ie_len) { 173c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg memcpy(pos, ifibss->ie, ifibss->ie_len); 174c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg pos += ifibss->ie_len; 175c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg } 176af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 17713c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* add HT capability and information IEs */ 1784bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg if (chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 1790418a445838749c51cf1e31a9c7ace6685ae87cdSimon Wunderlich chandef.width != NL80211_CHAN_WIDTH_5 && 1800418a445838749c51cf1e31a9c7ace6685ae87cdSimon Wunderlich chandef.width != NL80211_CHAN_WIDTH_10 && 181683b6d3b31a51956ea540df00abb0b78894924c1Johannes Berg sband->ht_cap.ht_supported) { 18213c40c54682ffe62977f670681268a26d500d6faAlexander Simon pos = ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, 18313c40c54682ffe62977f670681268a26d500d6faAlexander Simon sband->ht_cap.cap); 1840d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan /* 1850d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan * Note: According to 802.11n-2009 9.13.3.1, HT Protection 1860d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan * field and RIFS Mode are reserved in IBSS mode, therefore 1870d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan * keep them at 0 1880d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan */ 189074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg pos = ieee80211_ie_build_ht_oper(pos, &sband->ht_cap, 1904bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg &chandef, 0); 19113c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 19213c40c54682ffe62977f670681268a26d500d6faAlexander Simon 19332c5057b22a60b23353dda93c57e475856ca286cJohannes Berg if (local->hw.queues >= IEEE80211_NUM_ACS) { 1949eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = WLAN_EID_VENDOR_SPECIFIC; 1959eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 7; /* len */ 1969eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ 1979eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x50; 1989eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0xf2; 1999eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 2; /* WME */ 2009eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* WME info */ 2019eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 1; /* WME ver */ 2029eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* U-APSD no in use */ 2039eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 2049eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 205c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg presp->head_len = pos - presp->head; 206c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg if (WARN_ON(presp->head_len > frame_len)) 207c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg return; 208c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 209c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg rcu_assign_pointer(ifibss->presp, presp); 210469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 211d6a83228823fc0cc8d79d95c9f0bf568b7317862Johannes Berg sdata->vif.bss_conf.enable_beacon = true; 2122d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg sdata->vif.bss_conf.beacon_int = beacon_int; 213fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->vif.bss_conf.basic_rates = basic_rates; 2140ca54f6c5fd4ce58aa044d1fc7f00d7f6cf2801cMarek Puzyniak sdata->vif.bss_conf.ssid_len = ifibss->ssid_len; 2150ca54f6c5fd4ce58aa044d1fc7f00d7f6cf2801cMarek Puzyniak memcpy(sdata->vif.bss_conf.ssid, ifibss->ssid, ifibss->ssid_len); 2162d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change = BSS_CHANGED_BEACON_INT; 2172d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= ieee80211_reset_erp_info(sdata); 2182d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BSSID; 2192d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON; 2202d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON_ENABLED; 221392cfdb10dab6c7dfa5fed18d8a44d7453d42196Teemu Paasikivi bss_change |= BSS_CHANGED_BASIC_RATES; 22213c40c54682ffe62977f670681268a26d500d6faAlexander Simon bss_change |= BSS_CHANGED_HT; 2238fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg bss_change |= BSS_CHANGED_IBSS; 2240ca54f6c5fd4ce58aa044d1fc7f00d7f6cf2801cMarek Puzyniak bss_change |= BSS_CHANGED_SSID; 2252f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich 2262f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich /* 2272f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * In 5 GHz/802.11a, we can always use short slot time. 2282f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * (IEEE 802.11-2012 18.3.8.7) 2292f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * 2302f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * In 2.4GHz, we must always use long slots in IBSS for compatibility 2312f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * reasons. 2322f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * (IEEE 802.11-2012 19.4.5) 2332f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * 2342f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * HT follows these specifications (IEEE 802.11-2012 20.3.18) 2352f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich */ 2362f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich sdata->vif.bss_conf.use_short_slot = chan->band == IEEE80211_BAND_5GHZ; 2372f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich bss_change |= BSS_CHANGED_ERP_SLOT; 2382f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich 2398fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = true; 240c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan sdata->vif.bss_conf.ibss_creator = creator; 2412d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg ieee80211_bss_info_change_notify(sdata, bss_change); 242469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 243b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg ieee80211_sta_def_wmm_params(sdata, sband->n_bitrates, supp_rates); 244469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 245469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ifibss->state = IEEE80211_IBSS_MLME_JOINED; 246af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 247af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 248469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 249273686d664daae1aa728b76e45720273b26dd876Johannes Berg bss = cfg80211_inform_bss_frame(local->hw.wiphy, chan, 250c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg mgmt, presp->head_len, 0, GFP_KERNEL); 2515b112d3d098c97b867cc580f590395cd1e72f18cJohannes Berg cfg80211_put_bss(local->hw.wiphy, bss); 25286a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_on(sdata->dev); 253af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL); 254469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 255469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 256af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 257af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_bss *bss) 258469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 2590c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss = 2600c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg container_of((void *)bss, struct cfg80211_bss, priv); 261b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg struct ieee80211_supported_band *sband; 262b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u32 basic_rates; 263b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int i, j; 2640c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg u16 beacon_int = cbss->beacon_interval; 2658cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg const struct cfg80211_bss_ies *ies; 2668cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg u64 tsf; 26757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2688d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 2697a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 27057c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg if (beacon_int < 10) 27157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int = 10; 27257c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2730c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sband = sdata->local->hw.wiphy->bands[cbss->channel->band]; 274b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 275b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates = 0; 276b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 277b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < bss->supp_rates_len; i++) { 278b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = (bss->supp_rates[i] & 0x7f) * 5; 279b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg bool is_basic = !!(bss->supp_rates[i] & 0x80); 280b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 281b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (j = 0; j < sband->n_bitrates; j++) { 282b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->bitrates[j].bitrate == rate) { 283b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (is_basic) 284b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates |= BIT(j); 285b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg break; 286b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 287b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 288b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 289b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 2908cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg rcu_read_lock(); 2918cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg ies = rcu_dereference(cbss->ies); 2928cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg tsf = ies->tsf; 2938cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg rcu_read_unlock(); 2948cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg 2950c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg __ieee80211_sta_join_ibss(sdata, cbss->bssid, 29657c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int, 2970c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->channel, 298b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates, 2990c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->capability, 3008cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg tsf, false); 301469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 302469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 30352874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartullistatic struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta) 3048bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg __acquires(RCU) 3058bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg{ 3068bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_sub_if_data *sdata = sta->sdata; 3078bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg u8 addr[ETH_ALEN]; 3088bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3098bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg memcpy(addr, sta->sta.addr, ETH_ALEN); 3108bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 311bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "Adding new IBSS station %pM\n", addr); 3128bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 31383d5cc012441531ab0bf6f99881958e964e9cf11Johannes Berg sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 31483d5cc012441531ab0bf6f99881958e964e9cf11Johannes Berg sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 315267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli /* authorize the station only if the network is not RSN protected. If 316267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli * not wait for the userspace to authorize it */ 317267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli if (!sta->sdata->u.ibss.control_port) 318267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); 3198bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3208bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rate_control_rate_init(sta); 3218bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3228bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* If it fails, maybe we raced another insertion? */ 3238bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (sta_info_insert_rcu(sta)) 3248bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return sta_info_get(sdata, addr); 3258bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return sta; 3268bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg} 3278bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3288bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergstatic struct sta_info * 32952874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulliieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, const u8 *bssid, 33052874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli const u8 *addr, u32 supp_rates) 3318bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg __acquires(RCU) 3328bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg{ 3338bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3348bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_local *local = sdata->local; 3358bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 33655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 337b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan struct ieee80211_supported_band *sband; 33855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg int band; 3398bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3408bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* 3418bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg * XXX: Consider removing the least recently used entry and 3428bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg * allow new one to be added. 3438bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg */ 3448bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 345bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg net_info_ratelimited("%s: No room for a new IBSS STA entry %pM\n", 346e87cc4728f0e2fb663e592a1141742b1d6c63256Joe Perches sdata->name, addr); 3478bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3488bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3498bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3508bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3518bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) { 3528bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3538bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3548bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3558bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 356b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(bssid, sdata->u.ibss.bssid)) { 3578bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3588bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3598bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3608bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 36155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_lock(); 36255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 36355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (WARN_ON_ONCE(!chanctx_conf)) 36455de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return NULL; 3654bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg band = chanctx_conf->def.chan->band; 36655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 36755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 3688bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = sta_info_alloc(sdata, addr, GFP_KERNEL); 3698bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (!sta) { 3708bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3718bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3728bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3738bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3748bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta->last_rx = jiffies; 3758bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3768bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* make sure mandatory rates are always added */ 377b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan sband = local->hw.wiphy->bands[band]; 3788bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta->sta.supp_rates[band] = supp_rates | 379b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan ieee80211_mandatory_rates(sband); 3808bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 38152874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli return ieee80211_ibss_finish_sta(sta); 3826d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli} 3836d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3842cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartullistatic void ieee80211_rx_mgmt_deauth_ibss(struct ieee80211_sub_if_data *sdata, 3852cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli struct ieee80211_mgmt *mgmt, 3862cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli size_t len) 3872cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli{ 3882cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli u16 reason = le16_to_cpu(mgmt->u.deauth.reason_code); 3892cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 3902cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli if (len < IEEE80211_DEAUTH_FRAME_LEN) 3912cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli return; 3922cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 3932cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli ibss_dbg(sdata, "RX DeAuth SA=%pM DA=%pM BSSID=%pM (reason: %d)\n", 3942cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli mgmt->sa, mgmt->da, mgmt->bssid, reason); 3952cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli sta_info_destroy_addr(sdata, mgmt->sa); 3962cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli} 3972cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 3986d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartullistatic void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, 3996d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli struct ieee80211_mgmt *mgmt, 4006d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli size_t len) 4016d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli{ 4026d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli u16 auth_alg, auth_transaction; 4036d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 4048d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 4056d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 4066d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli if (len < 24 + 6) 4076d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli return; 4086d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 4096d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); 4106d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); 4116d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 412bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 413bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "RX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=%d)\n", 414bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa, mgmt->da, mgmt->bssid, auth_transaction); 4157bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli 4167bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) 4177bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli return; 4187bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli 4192cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli /* 4206d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * IEEE 802.11 standard does not require authentication in IBSS 4216d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * networks and most implementations do not seem to use it. 4226d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * However, try to reply to authentication attempts if someone 4236d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * has actually implemented this. 4246d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli */ 425700e8ea6770df3113e735bcc76ecd6ffac71a13cJouni Malinen ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, 0, NULL, 0, 4261672c0e31917f49d31d30d79067103432bc20cc7Johannes Berg mgmt->sa, sdata->u.ibss.bssid, NULL, 0, 0, 0); 4278bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg} 4288bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 429469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, 430d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach struct ieee80211_mgmt *mgmt, size_t len, 431469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status, 432d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach struct ieee802_11_elems *elems) 433469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 434469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 435469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int freq; 4360c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 437469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_bss *bss; 438469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 439469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_channel *channel; 440469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u64 beacon_timestamp, rx_timestamp; 441469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u32 supp_rates = 0; 442469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg enum ieee80211_band band = rx_status->band; 44313c40c54682ffe62977f670681268a26d500d6faAlexander Simon struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; 44413c40c54682ffe62977f670681268a26d500d6faAlexander Simon bool rates_updated = false; 445469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4461cd8e88e17729f57a9c7f751103e522596bb5de2Johannes Berg if (elems->ds_params) 44759eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf freq = ieee80211_channel_to_frequency(elems->ds_params[0], 44859eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf band); 449469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 450469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg freq = rx_status->freq; 451469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 452469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel = ieee80211_get_channel(local->hw.wiphy, freq); 453469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 454469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 455469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 456469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4579eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sdata->vif.type == NL80211_IFTYPE_ADHOC && 458b203ca39126bad99583c908be587df067820a1eaJoe Perches ether_addr_equal(mgmt->bssid, sdata->u.ibss.bssid)) { 459469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 460469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 461abe60632f311d515b082b450504ee24006023951Johannes Berg sta = sta_info_get(sdata, mgmt->sa); 462469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4639eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (elems->supp_rates) { 4649eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, 4659ebb61a23d90703344fc609fbee8da67b1e7456cAshok Nagarajan band, NULL); 4669eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta) { 4679eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf u32 prev_rates; 4689eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 4699eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates = sta->sta.supp_rates[band]; 4709eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf /* make sure mandatory rates are always added */ 4719eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band] = supp_rates | 472b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan ieee80211_mandatory_rates(sband); 473469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4749eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta->sta.supp_rates[band] != prev_rates) { 475bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 476bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "updated supp_rates set for %pM based on beacon/probe_resp (0x%x -> 0x%x)\n", 477bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sta->sta.addr, prev_rates, 478bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sta->sta.supp_rates[band]); 47913c40c54682ffe62977f670681268a26d500d6faAlexander Simon rates_updated = true; 4809eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 4818bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } else { 4828bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 4839eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, 48452874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli mgmt->sa, supp_rates); 4858bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 48634e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg } 4879eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 4889eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta && elems->wmm_info) 489c2c98fdeb5c897499644eb247285c8e3dacc6450Johannes Berg set_sta_flag(sta, WLAN_STA_WME); 4909eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 491074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg if (sta && elems->ht_operation && elems->ht_cap_elem && 4923aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 4933aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_5 && 4943aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_10) { 49513c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* we both use HT */ 496e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg struct ieee80211_ht_cap htcap_ie; 4974bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg struct cfg80211_chan_def chandef; 4984bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg 4994bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg ieee80211_ht_oper_to_chandef(channel, 5004bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg elems->ht_operation, 5014bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg &chandef); 50213c40c54682ffe62977f670681268a26d500d6faAlexander Simon 503e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg memcpy(&htcap_ie, elems->ht_cap_elem, sizeof(htcap_ie)); 50413c40c54682ffe62977f670681268a26d500d6faAlexander Simon 50513c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* 50613c40c54682ffe62977f670681268a26d500d6faAlexander Simon * fall back to HT20 if we don't use or use 50713c40c54682ffe62977f670681268a26d500d6faAlexander Simon * the other extension channel 50813c40c54682ffe62977f670681268a26d500d6faAlexander Simon */ 5093aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich if (chandef.center_freq1 != 5103aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.center_freq1) 511e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg htcap_ie.cap_info &= 512e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg cpu_to_le16(~IEEE80211_HT_CAP_SUP_WIDTH_20_40); 513e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg 514e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg rates_updated |= ieee80211_ht_cap_ie_to_sta_ht_cap( 515e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg sdata, sband, &htcap_ie, sta); 51613c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 51713c40c54682ffe62977f670681268a26d500d6faAlexander Simon 518e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli if (sta && rates_updated) { 519e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli drv_sta_rc_update(local, sdata, &sta->sta, 520e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli IEEE80211_RC_SUPP_RATES_CHANGED); 52113c40c54682ffe62977f670681268a26d500d6faAlexander Simon rate_control_rate_init(sta); 522e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli } 52313c40c54682ffe62977f670681268a26d500d6faAlexander Simon 5249eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf rcu_read_unlock(); 525469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 526469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 527469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, 528d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach channel); 529469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!bss) 530469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 531469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5320c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = container_of((void *)bss, struct cfg80211_bss, priv); 5330c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 5348cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg /* same for beacon and probe response */ 5358cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); 536469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 537469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* check if we need to merge IBSS */ 538469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 539469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* we use a fixed BSSID */ 540a98bfec2985221d8e0904a526cbe88590eaad2a6Benoit Papillault if (sdata->u.ibss.fixed_bssid) 541469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 542469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 543469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* not an IBSS */ 5440c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (!(cbss->capability & WLAN_CAPABILITY_IBSS)) 545469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 546469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 547469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different channel */ 54855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (sdata->u.ibss.fixed_channel && 5493aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.chan != cbss->channel) 550469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 551469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 552469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different SSID */ 553469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ssid_len != sdata->u.ibss.ssid_len || 554469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(elems->ssid, sdata->u.ibss.ssid, 555469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->u.ibss.ssid_len)) 556469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 557469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 55834e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen /* same BSSID */ 559b203ca39126bad99583c908be587df067820a1eaJoe Perches if (ether_addr_equal(cbss->bssid, sdata->u.ibss.bssid)) 56034e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen goto put_bss; 56134e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen 562f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen if (ieee80211_have_rx_timestamp(rx_status)) { 563f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen /* time when timestamp field was received */ 564f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen rx_timestamp = 565f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen ieee80211_calculate_rx_timestamp(local, rx_status, 566f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen len + FCS_LEN, 24); 5672448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } else { 5682448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* 5692448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * second best option: get current TSF 5702448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * (will return -1 if not supported) 5712448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg */ 57237a41b4affa33bb237d3692bf51f1b5ebcaf29d8Eliad Peller rx_timestamp = drv_get_tsf(local, sdata); 5732448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } 574469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 575bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 576bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "RX beacon SA=%pM BSSID=%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", 577bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa, mgmt->bssid, 578bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg (unsigned long long)rx_timestamp, 579bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg (unsigned long long)beacon_timestamp, 580bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg (unsigned long long)(rx_timestamp - beacon_timestamp), 581bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg jiffies); 582469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 583469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (beacon_timestamp > rx_timestamp) { 584bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 585bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "beacon TSF higher than local TSF - IBSS merge with BSSID %pM\n", 586bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->bssid); 587469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_join_ibss(sdata, bss); 5889ebb61a23d90703344fc609fbee8da67b1e7456cAshok Nagarajan supp_rates = ieee80211_sta_get_rates(local, elems, band, NULL); 58934e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 59052874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli supp_rates); 5918bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 592469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 593469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 594469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg put_bss: 595469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 596469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 597469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5988bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergvoid ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 5998bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg const u8 *bssid, const u8 *addr, 6008bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg u32 supp_rates) 601469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 6022e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 603469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 604469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 60555de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 606b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan struct ieee80211_supported_band *sband; 60755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg int band; 608469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 609af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* 610af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * XXX: Consider removing the least recently used entry and 611af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * allow new one to be added. 612af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg */ 613469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 614bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg net_info_ratelimited("%s: No room for a new IBSS STA entry %pM\n", 615e87cc4728f0e2fb663e592a1141742b1d6c63256Joe Perches sdata->name, addr); 6168bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 617469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 618469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6192e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) 6208bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 6212e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau 622b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(bssid, sdata->u.ibss.bssid)) 6238bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 624469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 62555de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_lock(); 62655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 62755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (WARN_ON_ONCE(!chanctx_conf)) { 62855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 62955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return; 63055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg } 6314bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg band = chanctx_conf->def.chan->band; 63255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 63355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 6348bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); 635469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!sta) 6368bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 637469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 638c8716d9dc13c7f6ee92f2bfc6cc3b723b417bff8Rajkumar Manoharan sta->last_rx = jiffies; 639d9a7ddb05e5419ca5e4b54f57074dc33c7ea991cJohannes Berg 640469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* make sure mandatory rates are always added */ 641b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan sband = local->hw.wiphy->bands[band]; 642469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sta->sta.supp_rates[band] = supp_rates | 643b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan ieee80211_mandatory_rates(sband); 644469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6458bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock(&ifibss->incomplete_lock); 6468bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_add(&sta->list, &ifibss->incomplete_stations); 6478bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock(&ifibss->incomplete_lock); 6488bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 649469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 650469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 651469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) 652469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 653469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 654469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active = 0; 655469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 656469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6578d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 6587a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 659469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 660469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 661469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg list_for_each_entry_rcu(sta, &local->sta_list, list) { 662469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta->sdata == sdata && 663469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, 664469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies)) { 665469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active++; 666469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 667469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 668469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 669469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 670469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_unlock(); 671469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 672469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return active; 673469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 674469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 675ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 676ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_JOINED 677ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 678469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 679469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) 680469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 681469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 682469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6838d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 6847a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 685af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 686af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 687469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 688469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); 689af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 690450aae3d7b60a970f266349a837dfb30a539198bSujith if (time_before(jiffies, ifibss->last_scan_completed + 691450aae3d7b60a970f266349a837dfb30a539198bSujith IEEE80211_IBSS_MERGE_INTERVAL)) 692450aae3d7b60a970f266349a837dfb30a539198bSujith return; 693450aae3d7b60a970f266349a837dfb30a539198bSujith 694469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ieee80211_sta_active_ibss(sdata)) 695469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 696469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 697c037b8367c7e2b775a99d74037f5df014d2fbf06John W. Linville if (ifibss->fixed_channel) 698469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 699469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 700bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, 701bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge)\n"); 702469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 70334bcf71502413f8903ade93746f2d0f04b937a78Stanislaw Gruszka ieee80211_request_ibss_scan(sdata, ifibss->ssid, ifibss->ssid_len, 70434bcf71502413f8903ade93746f2d0f04b937a78Stanislaw Gruszka NULL); 705469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 706469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 707af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) 708469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 709469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 710469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 bssid[ETH_ALEN]; 711469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 capability; 712469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int i; 713469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7148d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 7157a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 716af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) { 717469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(bssid, ifibss->bssid, ETH_ALEN); 718469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } else { 719469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Generate random, not broadcast, locally administered BSSID. Mix in 720469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * own MAC address to make sure that devices that do not have proper 721469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * random number generator get different BSSID. */ 722469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg get_random_bytes(bssid, ETH_ALEN); 723469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg for (i = 0; i < ETH_ALEN; i++) 72447846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg bssid[i] ^= sdata->vif.addr[i]; 725469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] &= ~0x01; 726469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] |= 0x02; 727469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 728469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 729bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, "Creating new IBSS network, BSSID %pM\n", bssid); 730469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 731469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability = WLAN_CAPABILITY_IBSS; 732469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 733fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 734469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 735469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 736469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->drop_unencrypted = 0; 737469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 73857c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int, 7393aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich ifibss->chandef.chan, ifibss->basic_rates, 740c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan capability, 0, true); 741469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 742469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 743ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 744ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_SEARCH 745ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 746ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault 747af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) 748469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 749469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 750469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 7510c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 752af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan = NULL; 753469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg const u8 *bssid = NULL; 754469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active_ibss; 755e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg u16 capability; 756469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7578d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 7587a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 759469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active_ibss = ieee80211_sta_active_ibss(sdata); 760bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "sta_find_ibss (active_ibss=%d)\n", active_ibss); 761469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 762469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (active_ibss) 763af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 764469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 765e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability = WLAN_CAPABILITY_IBSS; 766fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 767e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 768af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) 769af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg bssid = ifibss->bssid; 770af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 7713aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich chan = ifibss->chandef.chan; 772af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!is_zero_ether_addr(ifibss->bssid)) 773469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid = ifibss->bssid; 7740c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid, 7750c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg ifibss->ssid, ifibss->ssid_len, 7760c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY, 7770c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg capability); 7780c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 7790c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss) { 7800c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct ieee80211_bss *bss; 781469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7820c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg bss = (void *)cbss->priv; 783bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 784bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "sta_find_ibss: selected %pM current %pM\n", 785bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg cbss->bssid, ifibss->bssid); 786bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, 787bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "Selected IBSS BSSID %pM based on configured SSID\n", 788bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg cbss->bssid); 789469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 790af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_join_ibss(sdata, bss); 791469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 792af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 793d419b9f0fa69e79ccba3e5e79a58a52ae0c2ed6aReinette Chatre } 794469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 795bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "sta_find_ibss: did not try to join ibss\n"); 796469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 797469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Selected IBSS not found in current scan results - try to scan */ 798ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault if (time_after(jiffies, ifibss->last_scan_completed + 799469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_SCAN_INTERVAL)) { 800bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, "Trigger new scan to find an IBSS to join\n"); 801469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 80234bcf71502413f8903ade93746f2d0f04b937a78Stanislaw Gruszka ieee80211_request_ibss_scan(sdata, ifibss->ssid, 80334bcf71502413f8903ade93746f2d0f04b937a78Stanislaw Gruszka ifibss->ssid_len, chan); 804ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault } else { 805469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int interval = IEEE80211_SCAN_INTERVAL; 806469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 807469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (time_after(jiffies, ifibss->ibss_join_req + 80855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg IEEE80211_IBSS_JOIN_TIMEOUT)) 80955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg ieee80211_sta_create_ibss(sdata); 810469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 811af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 812af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + interval)); 813469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 814469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 815469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 816469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, 817c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct sk_buff *req) 818469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 819c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct ieee80211_mgmt *mgmt = (void *)req->data; 820469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 821469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 822c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg int tx_last_beacon, len = req->len; 823469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 824c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg struct beacon_data *presp; 825469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos, *end; 826469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8278d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 8287a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 82940b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg presp = rcu_dereference_protected(ifibss->presp, 8308d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg lockdep_is_held(&sdata->wdev.mtx)); 83140b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg 832469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ifibss->state != IEEE80211_IBSS_MLME_JOINED || 83340b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg len < 24 + 2 || !presp) 834469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 835469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8362448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg tx_last_beacon = drv_tx_last_beacon(local); 837469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 838bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 839bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "RX ProbeReq SA=%pM DA=%pM BSSID=%pM (tx_last_beacon=%d)\n", 840bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa, mgmt->da, mgmt->bssid, tx_last_beacon); 841469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8421ed76487ce115110171480deabd3cd4656f9803eFelix Fietkau if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da)) 843469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 844469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 845b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(mgmt->bssid, ifibss->bssid) && 846888d04dfbe7e09f930fdaafb257cce2c54c9c3f3Felix Fietkau !is_broadcast_ether_addr(mgmt->bssid)) 847469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 848469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 849469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg end = ((u8 *) mgmt) + len; 850469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = mgmt->u.probe_req.variable; 851469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[0] != WLAN_EID_SSID || 852469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos + 2 + pos[1] > end) { 853bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "Invalid SSID IE in ProbeReq from %pM\n", 854bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa); 855469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 856469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 857469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[1] != 0 && 858469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (pos[1] != ifibss->ssid_len || 8590da780c269957783d341fc3559e6b4c9912af7b4Benoit Papillault memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) { 860469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Ignore ProbeReq for foreign SSID */ 861469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 862469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 863469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 864469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Reply with ProbeResp */ 865c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg skb = dev_alloc_skb(local->tx_headroom + presp->head_len); 866469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!skb) 867469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 868469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 869c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg skb_reserve(skb, local->tx_headroom); 870c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg memcpy(skb_put(skb, presp->head_len), presp->head, presp->head_len); 871c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 872c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg memcpy(((struct ieee80211_mgmt *) skb->data)->da, mgmt->sa, ETH_ALEN); 873c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg ibss_dbg(sdata, "Sending ProbeResp to %pM\n", mgmt->sa); 87462ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 87562ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg ieee80211_tx_skb(sdata, skb); 876469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 877469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 878d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbachstatic 879d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbachvoid ieee80211_rx_mgmt_probe_beacon(struct ieee80211_sub_if_data *sdata, 880d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach struct ieee80211_mgmt *mgmt, size_t len, 881d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach struct ieee80211_rx_status *rx_status) 882469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 883469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 884469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 885469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 886d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach BUILD_BUG_ON(offsetof(typeof(mgmt->u.probe_resp), variable) != 887d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach offsetof(typeof(mgmt->u.beacon), variable)); 888d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach 889d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach /* 890d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach * either beacon or probe_resp but the variable field is at the 891d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach * same offset 892d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach */ 893469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 894469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 895469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 896469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 897469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 898b2e506bfc4d752b68a0ccaae1e977898263eba4cJohannes Berg false, &elems); 899469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 900d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); 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 9148d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_lock(sdata); 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 case IEEE80211_STYPE_BEACON: 925d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach ieee80211_rx_mgmt_probe_beacon(sdata, mgmt, skb->len, 926d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach rx_status); 927469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 928469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_AUTH: 929469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_auth_ibss(sdata, mgmt, skb->len); 930469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 9312cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli case IEEE80211_STYPE_DEAUTH: 9322cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli ieee80211_rx_mgmt_deauth_ibss(sdata, mgmt, skb->len); 9332cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli break; 934469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 9357a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 936c926d006c1514cfb3572893f41f2324e96823661Tim Harvey mgmt_out: 9378d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_unlock(sdata); 938469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 939469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9401fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata) 941469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 9421fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 9438bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 944469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9458d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_lock(sdata); 9467a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 9477a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg /* 9487a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * Work could be scheduled after scan or similar 9497a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * when we aren't even joined (or trying) with a 9507a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * network. 9517a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg */ 9527a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!ifibss->ssid_len) 9537a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg goto out; 954469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9558bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 9568bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg while (!list_empty(&ifibss->incomplete_stations)) { 9578bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = list_first_entry(&ifibss->incomplete_stations, 9588bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info, list); 9598bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_del(&sta->list); 9608bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 9618bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 96252874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli ieee80211_ibss_finish_sta(sta); 9638bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 9648bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 9658bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 9668bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 9678bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 968469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (ifibss->state) { 969469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_SEARCH: 970469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_find_ibss(sdata); 971469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 972469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_JOINED: 973469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_merge_ibss(sdata); 974469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 975469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg default: 976469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg WARN_ON(1); 977469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 978469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 979469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9807a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg out: 9818d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_unlock(sdata); 9823a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg} 9833a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg 984469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_ibss_timer(unsigned long data) 985469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 986469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_sub_if_data *sdata = 987469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (struct ieee80211_sub_if_data *) data; 9885bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 989a61829437e68c8b2036cf5005ed0e875451c9120Stanislaw Gruszka ieee80211_queue_work(&sdata->local->hw, &sdata->work); 9905bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 9915bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 992469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata) 993469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 994469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 995469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 996469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg setup_timer(&ifibss->timer, ieee80211_ibss_timer, 997469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long) sdata); 9988bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg INIT_LIST_HEAD(&ifibss->incomplete_stations); 9998bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_init(&ifibss->incomplete_lock); 1000469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1001469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1002469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* scan finished notification */ 1003469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local) 1004469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 1005af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_sub_if_data *sdata; 1006469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 100729b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_lock(&local->iflist_mtx); 100829b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 10099607e6b66a0d25ca63b70d54a4283fa13d8f7c9dJohannes Berg if (!ieee80211_sdata_running(sdata)) 10100e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg continue; 1011af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_ADHOC) 1012af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg continue; 1013af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.last_scan_completed = jiffies; 10147a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 1015469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 101629b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_unlock(&local->iflist_mtx); 1017469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1018469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1019af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1020af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct cfg80211_ibss_params *params) 1021af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 1022ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich u32 changed = 0; 1023af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1024af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->bssid) { 1025af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN); 1026af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = true; 1027af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } else 1028af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = false; 1029af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1030fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.privacy = params->privacy; 1031267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli sdata->u.ibss.control_port = params->control_port; 1032fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->u.ibss.basic_rates = params->basic_rates; 1033dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate, 1034dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau sizeof(params->mcast_rate)); 1035fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg 103657c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg sdata->vif.bss_conf.beacon_int = params->beacon_interval; 103757c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 10383aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef = params->chandef; 1039af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_channel = params->channel_fixed; 1040af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1041af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->ie) { 1042af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len, 1043af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg GFP_KERNEL); 1044af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->u.ibss.ie) 1045af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie_len = params->ie_len; 1046af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 1047af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1048af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 1049af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ibss_join_req = jiffies; 1050af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1051badecb001a310408d3473b1fc2ed5aefd0bc92a9Antonio Quartulli memcpy(sdata->u.ibss.ssid, params->ssid, params->ssid_len); 10520e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg sdata->u.ibss.ssid_len = params->ssid_len; 10530e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg 1054ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich /* 1055ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 802.11n-2009 9.13.3.1: In an IBSS, the HT Protection field is 1056ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * reserved, but an HT STA shall protect HT transmissions as though 1057ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * the HT Protection field were set to non-HT mixed mode. 1058ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 1059ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * In an IBSS, the RIFS Mode field of the HT Operation element is 1060ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * also reserved, but an HT STA shall operate as though this field 1061ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * were set to 1. 1062ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich */ 1063ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1064ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich sdata->vif.bss_conf.ht_operation_mode |= 1065ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 1066ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich | IEEE80211_HT_PARAM_RIFS_MODE; 1067ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1068ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich changed |= BSS_CHANGED_HT; 1069ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich ieee80211_bss_info_change_notify(sdata, changed); 1070ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 107104ecd2578e712c301fa1369d2a8f298a2b4b146aJohannes Berg sdata->smps_mode = IEEE80211_SMPS_OFF; 107204ecd2578e712c301fa1369d2a8f298a2b4b146aJohannes Berg sdata->needed_rx_chains = sdata->local->rx_chains; 107304ecd2578e712c301fa1369d2a8f298a2b4b146aJohannes Berg 107464592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&sdata->local->hw, &sdata->work); 1075af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1076af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1077af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1078af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1079af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) 1080af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 10815ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 10825ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_local *local = sdata->local; 10835ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct cfg80211_bss *cbss; 10845ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi u16 capability; 10857a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg int active_ibss; 10868bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 1087c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg struct beacon_data *presp; 10887a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 10895ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi active_ibss = ieee80211_sta_active_ibss(sdata); 10905ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 10915ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) { 10925ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability = WLAN_CAPABILITY_IBSS; 10935ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 10945ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (ifibss->privacy) 10955ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability |= WLAN_CAPABILITY_PRIVACY; 10965ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 10973aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->chandef.chan, 10985ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->bssid, ifibss->ssid, 10995ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->ssid_len, WLAN_CAPABILITY_IBSS | 11005ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi WLAN_CAPABILITY_PRIVACY, 11015ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability); 11025ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11035ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (cbss) { 11045ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_unlink_bss(local->hw.wiphy, cbss); 11055b112d3d098c97b867cc580f590395cd1e72f18cJohannes Berg cfg80211_put_bss(local->hw.wiphy, cbss); 11065ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 11075ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 1108af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1109b78a4932f5fb11fadf41e69c606a33fa6787574cSimon Wunderlich ifibss->state = IEEE80211_IBSS_MLME_SEARCH; 1110b78a4932f5fb11fadf41e69c606a33fa6787574cSimon Wunderlich memset(ifibss->bssid, 0, ETH_ALEN); 1111b78a4932f5fb11fadf41e69c606a33fa6787574cSimon Wunderlich ifibss->ssid_len = 0; 1112b78a4932f5fb11fadf41e69c606a33fa6787574cSimon Wunderlich 1113b998e8bb3e1c6eeae5eab9d6a434563270286c3bJohannes Berg sta_info_flush(sdata); 11148bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 11158bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 11168bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg while (!list_empty(&ifibss->incomplete_stations)) { 11178bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = list_first_entry(&ifibss->incomplete_stations, 11188bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info, list); 11198bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_del(&sta->list); 11208bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 11218bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 11228bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta_info_free(local, sta); 11238bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 11248bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 11258bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 11268bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 112786a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_off(sdata->dev); 1128af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1129af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* remove beacon */ 1130af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree(sdata->u.ibss.ie); 1131c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg presp = rcu_dereference_protected(ifibss->presp, 11328d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg lockdep_is_held(&sdata->wdev.mtx)); 1133a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(sdata->u.ibss.presp, NULL); 11348fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 1135c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan sdata->vif.bss_conf.ibss_creator = false; 1136d6a83228823fc0cc8d79d95c9f0bf568b7317862Johannes Berg sdata->vif.bss_conf.enable_beacon = false; 11370ca54f6c5fd4ce58aa044d1fc7f00d7f6cf2801cMarek Puzyniak sdata->vif.bss_conf.ssid_len = 0; 1138d6a83228823fc0cc8d79d95c9f0bf568b7317862Johannes Berg clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 11398fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 11408fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg BSS_CHANGED_IBSS); 1141af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 1142c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg kfree(presp); 1143af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 114435f20c14a103ca2c7062999e934a513b83d84de6Johannes Berg skb_queue_purge(&sdata->skb_queue); 11455cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1146bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg del_timer_sync(&sdata->u.ibss.timer); 11477a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 1148af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1149af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1150