ibss.c revision 822854b0b1d8f893279ca717f3d084aa5fcd9ff5
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) { 182822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich struct ieee80211_sta_ht_cap ht_cap; 183822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich 184822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); 185822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich ieee80211_apply_htcap_overrides(sdata, &ht_cap); 186822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich 187822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich pos = ieee80211_ie_build_ht_cap(pos, &ht_cap, ht_cap.cap); 1880d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan /* 1890d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan * Note: According to 802.11n-2009 9.13.3.1, HT Protection 1900d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan * field and RIFS Mode are reserved in IBSS mode, therefore 1910d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan * keep them at 0 1920d894ec5017f7f463254e24fd2206e41d13cadffAshok Nagarajan */ 193074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg pos = ieee80211_ie_build_ht_oper(pos, &sband->ht_cap, 1944bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg &chandef, 0); 19513c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 19613c40c54682ffe62977f670681268a26d500d6faAlexander Simon 19732c5057b22a60b23353dda93c57e475856ca286cJohannes Berg if (local->hw.queues >= IEEE80211_NUM_ACS) { 1989eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = WLAN_EID_VENDOR_SPECIFIC; 1999eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 7; /* len */ 2009eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ 2019eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0x50; 2029eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0xf2; 2039eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 2; /* WME */ 2049eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* WME info */ 2059eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 1; /* WME ver */ 2069eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf *pos++ = 0; /* U-APSD no in use */ 2079eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 2089eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 209c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg presp->head_len = pos - presp->head; 210c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg if (WARN_ON(presp->head_len > frame_len)) 211c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg return; 212c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 213c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg rcu_assign_pointer(ifibss->presp, presp); 214469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 215d6a83228823fc0cc8d79d95c9f0bf568b7317862Johannes Berg sdata->vif.bss_conf.enable_beacon = true; 2162d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg sdata->vif.bss_conf.beacon_int = beacon_int; 217fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->vif.bss_conf.basic_rates = basic_rates; 2180ca54f6c5fd4ce58aa044d1fc7f00d7f6cf2801cMarek Puzyniak sdata->vif.bss_conf.ssid_len = ifibss->ssid_len; 2190ca54f6c5fd4ce58aa044d1fc7f00d7f6cf2801cMarek Puzyniak memcpy(sdata->vif.bss_conf.ssid, ifibss->ssid, ifibss->ssid_len); 2202d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change = BSS_CHANGED_BEACON_INT; 2212d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= ieee80211_reset_erp_info(sdata); 2222d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BSSID; 2232d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON; 2242d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg bss_change |= BSS_CHANGED_BEACON_ENABLED; 225392cfdb10dab6c7dfa5fed18d8a44d7453d42196Teemu Paasikivi bss_change |= BSS_CHANGED_BASIC_RATES; 22613c40c54682ffe62977f670681268a26d500d6faAlexander Simon bss_change |= BSS_CHANGED_HT; 2278fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg bss_change |= BSS_CHANGED_IBSS; 2280ca54f6c5fd4ce58aa044d1fc7f00d7f6cf2801cMarek Puzyniak bss_change |= BSS_CHANGED_SSID; 2292f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich 2302f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich /* 2312f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * In 5 GHz/802.11a, we can always use short slot time. 2322f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * (IEEE 802.11-2012 18.3.8.7) 2332f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * 2342f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * In 2.4GHz, we must always use long slots in IBSS for compatibility 2352f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * reasons. 2362f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * (IEEE 802.11-2012 19.4.5) 2372f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * 2382f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich * HT follows these specifications (IEEE 802.11-2012 20.3.18) 2392f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich */ 2402f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich sdata->vif.bss_conf.use_short_slot = chan->band == IEEE80211_BAND_5GHZ; 2412f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich bss_change |= BSS_CHANGED_ERP_SLOT; 2422f91a96799d155d56a0663dbe00fc45c6721a763Simon Wunderlich 2438fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = true; 244c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan sdata->vif.bss_conf.ibss_creator = creator; 2452d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg ieee80211_bss_info_change_notify(sdata, bss_change); 246469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 247b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg ieee80211_sta_def_wmm_params(sdata, sband->n_bitrates, supp_rates); 248469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 249469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ifibss->state = IEEE80211_IBSS_MLME_JOINED; 250af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 251af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 252469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 253273686d664daae1aa728b76e45720273b26dd876Johannes Berg bss = cfg80211_inform_bss_frame(local->hw.wiphy, chan, 254c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg mgmt, presp->head_len, 0, GFP_KERNEL); 2555b112d3d098c97b867cc580f590395cd1e72f18cJohannes Berg cfg80211_put_bss(local->hw.wiphy, bss); 25686a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_on(sdata->dev); 257af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL); 258469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 259469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 260af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, 261af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_bss *bss) 262469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 2630c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss = 2640c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg container_of((void *)bss, struct cfg80211_bss, priv); 265b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg struct ieee80211_supported_band *sband; 266b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg u32 basic_rates; 267b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int i, j; 2680c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg u16 beacon_int = cbss->beacon_interval; 2698cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg const struct cfg80211_bss_ies *ies; 2708cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg u64 tsf; 27157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2728d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 2737a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 27457c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg if (beacon_int < 10) 27557c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int = 10; 27657c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 2770c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg sband = sdata->local->hw.wiphy->bands[cbss->channel->band]; 278b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 279b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates = 0; 280b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 281b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (i = 0; i < bss->supp_rates_len; i++) { 282b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg int rate = (bss->supp_rates[i] & 0x7f) * 5; 283b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg bool is_basic = !!(bss->supp_rates[i] & 0x80); 284b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 285b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg for (j = 0; j < sband->n_bitrates; j++) { 286b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (sband->bitrates[j].bitrate == rate) { 287b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg if (is_basic) 288b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates |= BIT(j); 289b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg break; 290b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 291b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 292b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg } 293b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg 2948cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg rcu_read_lock(); 2958cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg ies = rcu_dereference(cbss->ies); 2968cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg tsf = ies->tsf; 2978cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg rcu_read_unlock(); 2988cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg 2990c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg __ieee80211_sta_join_ibss(sdata, cbss->bssid, 30057c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg beacon_int, 3010c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->channel, 302b59066a291ca7c12a1e5b58f3ada5ab6e32cb6bdJohannes Berg basic_rates, 3030c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss->capability, 3048cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg tsf, false); 305469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 306469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 30752874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartullistatic struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta) 3088bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg __acquires(RCU) 3098bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg{ 3108bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_sub_if_data *sdata = sta->sdata; 3118bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg u8 addr[ETH_ALEN]; 3128bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3138bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg memcpy(addr, sta->sta.addr, ETH_ALEN); 3148bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 315bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "Adding new IBSS station %pM\n", addr); 3168bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 31783d5cc012441531ab0bf6f99881958e964e9cf11Johannes Berg sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 31883d5cc012441531ab0bf6f99881958e964e9cf11Johannes Berg sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 319267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli /* authorize the station only if the network is not RSN protected. If 320267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli * not wait for the userspace to authorize it */ 321267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli if (!sta->sdata->u.ibss.control_port) 322267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); 3238bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3248bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rate_control_rate_init(sta); 3258bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3268bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* If it fails, maybe we raced another insertion? */ 3278bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (sta_info_insert_rcu(sta)) 3288bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return sta_info_get(sdata, addr); 3298bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return sta; 3308bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg} 3318bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3328bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergstatic struct sta_info * 33352874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulliieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, const u8 *bssid, 33452874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli const u8 *addr, u32 supp_rates) 3358bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg __acquires(RCU) 3368bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg{ 3378bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 3388bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct ieee80211_local *local = sdata->local; 3398bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 34055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 341b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan struct ieee80211_supported_band *sband; 34255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg int band; 3438bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3448bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* 3458bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg * XXX: Consider removing the least recently used entry and 3468bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg * allow new one to be added. 3478bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg */ 3488bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 349bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg net_info_ratelimited("%s: No room for a new IBSS STA entry %pM\n", 350e87cc4728f0e2fb663e592a1141742b1d6c63256Joe Perches sdata->name, addr); 3518bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3528bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3538bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3548bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3558bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) { 3568bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3578bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3588bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3598bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 360b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(bssid, sdata->u.ibss.bssid)) { 3618bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3628bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3638bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3648bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 36555de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_lock(); 36655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 36755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (WARN_ON_ONCE(!chanctx_conf)) 36855de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return NULL; 3694bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg band = chanctx_conf->def.chan->band; 37055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 37155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 3728bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = sta_info_alloc(sdata, addr, GFP_KERNEL); 3738bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg if (!sta) { 3748bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_lock(); 3758bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return NULL; 3768bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 3778bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3788bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta->last_rx = jiffies; 3798bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 3808bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg /* make sure mandatory rates are always added */ 381b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan sband = local->hw.wiphy->bands[band]; 3828bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta->sta.supp_rates[band] = supp_rates | 383b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan ieee80211_mandatory_rates(sband); 3848bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 38552874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli return ieee80211_ibss_finish_sta(sta); 3866d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli} 3876d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 3882cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartullistatic void ieee80211_rx_mgmt_deauth_ibss(struct ieee80211_sub_if_data *sdata, 3892cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli struct ieee80211_mgmt *mgmt, 3902cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli size_t len) 3912cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli{ 3922cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli u16 reason = le16_to_cpu(mgmt->u.deauth.reason_code); 3932cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 3942cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli if (len < IEEE80211_DEAUTH_FRAME_LEN) 3952cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli return; 3962cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 3972cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli ibss_dbg(sdata, "RX DeAuth SA=%pM DA=%pM BSSID=%pM (reason: %d)\n", 3982cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli mgmt->sa, mgmt->da, mgmt->bssid, reason); 3992cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli sta_info_destroy_addr(sdata, mgmt->sa); 4002cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli} 4012cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli 4026d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartullistatic void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata, 4036d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli struct ieee80211_mgmt *mgmt, 4046d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli size_t len) 4056d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli{ 4066d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli u16 auth_alg, auth_transaction; 4076d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 4088d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 4096d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 4106d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli if (len < 24 + 6) 4116d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli return; 4126d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 4136d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); 4146d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); 4156d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli 416bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 417bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "RX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=%d)\n", 418bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa, mgmt->da, mgmt->bssid, auth_transaction); 4197bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli 4207bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) 4217bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli return; 4227bed20503f62ae9660c7b5cd6c3603960e422450Antonio Quartulli 4232cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli /* 4246d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * IEEE 802.11 standard does not require authentication in IBSS 4256d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * networks and most implementations do not seem to use it. 4266d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * However, try to reply to authentication attempts if someone 4276d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli * has actually implemented this. 4286d810f10325522cfcf498dc6d64b9f96e1f5153fAntonio Quartulli */ 429700e8ea6770df3113e735bcc76ecd6ffac71a13cJouni Malinen ieee80211_send_auth(sdata, 2, WLAN_AUTH_OPEN, 0, NULL, 0, 4301672c0e31917f49d31d30d79067103432bc20cc7Johannes Berg mgmt->sa, sdata->u.ibss.bssid, NULL, 0, 0, 0); 4318bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg} 4328bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 433469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, 434d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach struct ieee80211_mgmt *mgmt, size_t len, 435469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status, 436d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach struct ieee802_11_elems *elems) 437469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 438469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 439469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int freq; 4400c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 441469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_bss *bss; 442469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 443469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_channel *channel; 444469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u64 beacon_timestamp, rx_timestamp; 445469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u32 supp_rates = 0; 446469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg enum ieee80211_band band = rx_status->band; 44713c40c54682ffe62977f670681268a26d500d6faAlexander Simon struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; 44813c40c54682ffe62977f670681268a26d500d6faAlexander Simon bool rates_updated = false; 449469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4501cd8e88e17729f57a9c7f751103e522596bb5de2Johannes Berg if (elems->ds_params) 45159eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf freq = ieee80211_channel_to_frequency(elems->ds_params[0], 45259eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf band); 453469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 454469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg freq = rx_status->freq; 455469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 456469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg channel = ieee80211_get_channel(local->hw.wiphy, freq); 457469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 458469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 459469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 460469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4619eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sdata->vif.type == NL80211_IFTYPE_ADHOC && 462b203ca39126bad99583c908be587df067820a1eaJoe Perches ether_addr_equal(mgmt->bssid, sdata->u.ibss.bssid)) { 463469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 464469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 465abe60632f311d515b082b450504ee24006023951Johannes Berg sta = sta_info_get(sdata, mgmt->sa); 466469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4679eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (elems->supp_rates) { 4689eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf supp_rates = ieee80211_sta_get_rates(local, elems, 4699ebb61a23d90703344fc609fbee8da67b1e7456cAshok Nagarajan band, NULL); 4709eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta) { 4719eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf u32 prev_rates; 4729eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 4739eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf prev_rates = sta->sta.supp_rates[band]; 4749eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf /* make sure mandatory rates are always added */ 4759eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta->sta.supp_rates[band] = supp_rates | 476b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan ieee80211_mandatory_rates(sband); 477469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 4789eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta->sta.supp_rates[band] != prev_rates) { 479bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 480bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "updated supp_rates set for %pM based on beacon/probe_resp (0x%x -> 0x%x)\n", 481bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sta->sta.addr, prev_rates, 482bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sta->sta.supp_rates[band]); 48313c40c54682ffe62977f670681268a26d500d6faAlexander Simon rates_updated = true; 4849eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf } 4858bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } else { 4868bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 4879eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf sta = ieee80211_ibss_add_sta(sdata, mgmt->bssid, 48852874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli mgmt->sa, supp_rates); 4898bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 49034e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg } 4919eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 4929eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf if (sta && elems->wmm_info) 493c2c98fdeb5c897499644eb247285c8e3dacc6450Johannes Berg set_sta_flag(sta, WLAN_STA_WME); 4949eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf 495074d46d1d23f27488a3f314e29cae2453541f17dJohannes Berg if (sta && elems->ht_operation && elems->ht_cap_elem && 4963aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 4973aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_5 && 4983aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.width != NL80211_CHAN_WIDTH_10) { 49913c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* we both use HT */ 500e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg struct ieee80211_ht_cap htcap_ie; 5014bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg struct cfg80211_chan_def chandef; 5024bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg 5034bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg ieee80211_ht_oper_to_chandef(channel, 5044bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg elems->ht_operation, 5054bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg &chandef); 50613c40c54682ffe62977f670681268a26d500d6faAlexander Simon 507e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg memcpy(&htcap_ie, elems->ht_cap_elem, sizeof(htcap_ie)); 50813c40c54682ffe62977f670681268a26d500d6faAlexander Simon 50913c40c54682ffe62977f670681268a26d500d6faAlexander Simon /* 51013c40c54682ffe62977f670681268a26d500d6faAlexander Simon * fall back to HT20 if we don't use or use 51113c40c54682ffe62977f670681268a26d500d6faAlexander Simon * the other extension channel 51213c40c54682ffe62977f670681268a26d500d6faAlexander Simon */ 5133aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich if (chandef.center_freq1 != 5143aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.center_freq1) 515e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg htcap_ie.cap_info &= 516e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg cpu_to_le16(~IEEE80211_HT_CAP_SUP_WIDTH_20_40); 517e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg 518e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg rates_updated |= ieee80211_ht_cap_ie_to_sta_ht_cap( 519e1a0c6b3a4b27ed5f21291d0bbee2167ec201ef5Johannes Berg sdata, sband, &htcap_ie, sta); 52013c40c54682ffe62977f670681268a26d500d6faAlexander Simon } 52113c40c54682ffe62977f670681268a26d500d6faAlexander Simon 522e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli if (sta && rates_updated) { 523e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli drv_sta_rc_update(local, sdata, &sta->sta, 524e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli IEEE80211_RC_SUPP_RATES_CHANGED); 52513c40c54682ffe62977f670681268a26d500d6faAlexander Simon rate_control_rate_init(sta); 526e687f61eedab8895e5669cb82cebe0253631cd8cAntonio Quartulli } 52713c40c54682ffe62977f670681268a26d500d6faAlexander Simon 5289eba612549f575d7dccda672ce932e15e7392d83Bruno Randolf rcu_read_unlock(); 529469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 530469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 531469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, 532d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach channel); 533469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!bss) 534469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 535469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 5360c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = container_of((void *)bss, struct cfg80211_bss, priv); 5370c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 5388cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg /* same for beacon and probe response */ 5398cef2c9df88fdd13f518e6607de9d664b31f26ccJohannes Berg beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); 540469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 541469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* check if we need to merge IBSS */ 542469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 543469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* we use a fixed BSSID */ 544a98bfec2985221d8e0904a526cbe88590eaad2a6Benoit Papillault if (sdata->u.ibss.fixed_bssid) 545469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 546469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 547469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* not an IBSS */ 5480c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (!(cbss->capability & WLAN_CAPABILITY_IBSS)) 549469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 550469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 551469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different channel */ 55255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (sdata->u.ibss.fixed_channel && 5533aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef.chan != cbss->channel) 554469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 555469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 556469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* different SSID */ 557469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (elems->ssid_len != sdata->u.ibss.ssid_len || 558469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcmp(elems->ssid, sdata->u.ibss.ssid, 559469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->u.ibss.ssid_len)) 560469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg goto put_bss; 561469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 56234e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen /* same BSSID */ 563b203ca39126bad99583c908be587df067820a1eaJoe Perches if (ether_addr_equal(cbss->bssid, sdata->u.ibss.bssid)) 56434e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen goto put_bss; 56534e8f08231388f9e16c6f1e2461f53afaf7f1e5eAlina Friedrichsen 566f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen if (ieee80211_have_rx_timestamp(rx_status)) { 567f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen /* time when timestamp field was received */ 568f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen rx_timestamp = 569f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen ieee80211_calculate_rx_timestamp(local, rx_status, 570f4bda337bbb6e245e2a07f344990adeb6a70ff35Thomas Pedersen len + FCS_LEN, 24); 5712448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } else { 5722448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg /* 5732448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * second best option: get current TSF 5742448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg * (will return -1 if not supported) 5752448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg */ 57637a41b4affa33bb237d3692bf51f1b5ebcaf29d8Eliad Peller rx_timestamp = drv_get_tsf(local, sdata); 5772448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg } 578469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 579bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 580bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "RX beacon SA=%pM BSSID=%pM TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", 581bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa, mgmt->bssid, 582bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg (unsigned long long)rx_timestamp, 583bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg (unsigned long long)beacon_timestamp, 584bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg (unsigned long long)(rx_timestamp - beacon_timestamp), 585bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg jiffies); 586469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 587469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (beacon_timestamp > rx_timestamp) { 588bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 589bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "beacon TSF higher than local TSF - IBSS merge with BSSID %pM\n", 590bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->bssid); 591469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_join_ibss(sdata, bss); 5929ebb61a23d90703344fc609fbee8da67b1e7456cAshok Nagarajan supp_rates = ieee80211_sta_get_rates(local, elems, band, NULL); 59334e895075e21be3e21e71d6317440d1ee7969ad0Johannes Berg ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa, 59452874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli supp_rates); 5958bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 596469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 597469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 598469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg put_bss: 599469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 600469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 601469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6028bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Bergvoid ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 6038bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg const u8 *bssid, const u8 *addr, 6048bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg u32 supp_rates) 605469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 6062e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 607469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 608469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 60955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg struct ieee80211_chanctx_conf *chanctx_conf; 610b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan struct ieee80211_supported_band *sband; 61155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg int band; 612469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 613af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* 614af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * XXX: Consider removing the least recently used entry and 615af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg * allow new one to be added. 616af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg */ 617469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { 618bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg net_info_ratelimited("%s: No room for a new IBSS STA entry %pM\n", 619e87cc4728f0e2fb663e592a1141742b1d6c63256Joe Perches sdata->name, addr); 6208bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 621469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 622469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6232e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH) 6248bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 6252e10d330f8d5f039fa1e00baf59435ab0f11c722Felix Fietkau 626b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(bssid, sdata->u.ibss.bssid)) 6278bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 628469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 62955de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_lock(); 63055de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 63155de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg if (WARN_ON_ONCE(!chanctx_conf)) { 63255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 63355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg return; 63455de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg } 6354bf88530be971bf95a7830ca61b4120980bf4347Johannes Berg band = chanctx_conf->def.chan->band; 63655de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg rcu_read_unlock(); 63755de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg 6388bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); 639469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!sta) 6408bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg return; 641469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 642c8716d9dc13c7f6ee92f2bfc6cc3b723b417bff8Rajkumar Manoharan sta->last_rx = jiffies; 643d9a7ddb05e5419ca5e4b54f57074dc33c7ea991cJohannes Berg 644469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* make sure mandatory rates are always added */ 645b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan sband = local->hw.wiphy->bands[band]; 646469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sta->sta.supp_rates[band] = supp_rates | 647b422c6cd7e93bb613030f14d7d8a0cc73f115629Ashok Nagarajan ieee80211_mandatory_rates(sband); 648469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6498bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock(&ifibss->incomplete_lock); 6508bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_add(&sta->list, &ifibss->incomplete_stations); 6518bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock(&ifibss->incomplete_lock); 6528bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 653469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 654469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 655469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) 656469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 657469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 658469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active = 0; 659469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sta_info *sta; 660469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6618d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 6627a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 663469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_lock(); 664469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 665469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg list_for_each_entry_rcu(sta, &local->sta_list, list) { 666469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (sta->sdata == sdata && 667469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, 668469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg jiffies)) { 669469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active++; 670469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 671469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 672469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 673469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 674469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg rcu_read_unlock(); 675469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 676469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return active; 677469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 678469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 679ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 680ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_JOINED 681ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 682469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 683469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata) 684469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 685469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 686469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 6878d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 6887a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 689af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 690af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL)); 691469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 692469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); 693af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 694450aae3d7b60a970f266349a837dfb30a539198bSujith if (time_before(jiffies, ifibss->last_scan_completed + 695450aae3d7b60a970f266349a837dfb30a539198bSujith IEEE80211_IBSS_MERGE_INTERVAL)) 696450aae3d7b60a970f266349a837dfb30a539198bSujith return; 697450aae3d7b60a970f266349a837dfb30a539198bSujith 698469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ieee80211_sta_active_ibss(sdata)) 699469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 700469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 701c037b8367c7e2b775a99d74037f5df014d2fbf06John W. Linville if (ifibss->fixed_channel) 702469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 703469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 704bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, 705bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge)\n"); 706469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 70734bcf71502413f8903ade93746f2d0f04b937a78Stanislaw Gruszka ieee80211_request_ibss_scan(sdata, ifibss->ssid, ifibss->ssid_len, 70834bcf71502413f8903ade93746f2d0f04b937a78Stanislaw Gruszka NULL); 709469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 710469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 711af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata) 712469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 713469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 714469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 bssid[ETH_ALEN]; 715469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 capability; 716469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int i; 717469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7188d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 7197a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 720af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) { 721469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg memcpy(bssid, ifibss->bssid, ETH_ALEN); 722469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } else { 723469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Generate random, not broadcast, locally administered BSSID. Mix in 724469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * own MAC address to make sure that devices that do not have proper 725469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg * random number generator get different BSSID. */ 726469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg get_random_bytes(bssid, ETH_ALEN); 727469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg for (i = 0; i < ETH_ALEN; i++) 72847846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg bssid[i] ^= sdata->vif.addr[i]; 729469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] &= ~0x01; 730469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid[0] |= 0x02; 731469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 732469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 733bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, "Creating new IBSS network, BSSID %pM\n", bssid); 734469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 735469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability = WLAN_CAPABILITY_IBSS; 736469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 737fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 738469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 739469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg else 740469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg sdata->drop_unencrypted = 0; 741469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 74257c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int, 7433aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich ifibss->chandef.chan, ifibss->basic_rates, 744c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan capability, 0, true); 745469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 746469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 747ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault/* 748ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault * This function is called with state == IEEE80211_IBSS_MLME_SEARCH 749ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault */ 750ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault 751af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergstatic void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata) 752469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 753469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 754469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 7550c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct cfg80211_bss *cbss; 756af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_channel *chan = NULL; 757469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg const u8 *bssid = NULL; 758469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int active_ibss; 759e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg u16 capability; 760469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7618d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 7627a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 763469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg active_ibss = ieee80211_sta_active_ibss(sdata); 764bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "sta_find_ibss (active_ibss=%d)\n", active_ibss); 765469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 766469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (active_ibss) 767af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 768469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 769e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability = WLAN_CAPABILITY_IBSS; 770fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg if (ifibss->privacy) 771e0d61887c2ee19bb63f6a8c0e2c149184e879501Johannes Berg capability |= WLAN_CAPABILITY_PRIVACY; 772af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_bssid) 773af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg bssid = ifibss->bssid; 774af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (ifibss->fixed_channel) 7753aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich chan = ifibss->chandef.chan; 776af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (!is_zero_ether_addr(ifibss->bssid)) 777469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg bssid = ifibss->bssid; 7780c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg cbss = cfg80211_get_bss(local->hw.wiphy, chan, bssid, 7790c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg ifibss->ssid, ifibss->ssid_len, 7800c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg WLAN_CAPABILITY_IBSS | WLAN_CAPABILITY_PRIVACY, 7810c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg capability); 7820c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg 7830c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg if (cbss) { 7840c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg struct ieee80211_bss *bss; 785469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 7860c1ad2cac1cb54db38fd4cc1822965071ee83f6eJohannes Berg bss = (void *)cbss->priv; 787bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 788bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "sta_find_ibss: selected %pM current %pM\n", 789bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg cbss->bssid, ifibss->bssid); 790bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, 791bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "Selected IBSS BSSID %pM based on configured SSID\n", 792bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg cbss->bssid); 793469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 794af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg ieee80211_sta_join_ibss(sdata, bss); 795469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_bss_put(local, bss); 796af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return; 797d419b9f0fa69e79ccba3e5e79a58a52ae0c2ed6aReinette Chatre } 798469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 799bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "sta_find_ibss: did not try to join ibss\n"); 800469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 801469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Selected IBSS not found in current scan results - try to scan */ 802ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault if (time_after(jiffies, ifibss->last_scan_completed + 803469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg IEEE80211_SCAN_INTERVAL)) { 804bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg sdata_info(sdata, "Trigger new scan to find an IBSS to join\n"); 805469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 80634bcf71502413f8903ade93746f2d0f04b937a78Stanislaw Gruszka ieee80211_request_ibss_scan(sdata, ifibss->ssid, 80734bcf71502413f8903ade93746f2d0f04b937a78Stanislaw Gruszka ifibss->ssid_len, chan); 808ce9058aedd75f14785400dcc49a2bc352ca38871Benoit Papillault } else { 809469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg int interval = IEEE80211_SCAN_INTERVAL; 810469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 811469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (time_after(jiffies, ifibss->ibss_join_req + 81255de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg IEEE80211_IBSS_JOIN_TIMEOUT)) 81355de908ab292c03f1eb280f51170ddb9c6b57e31Johannes Berg ieee80211_sta_create_ibss(sdata); 814469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 815af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg mod_timer(&ifibss->timer, 816af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg round_jiffies(jiffies + interval)); 817469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 818469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 819469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 820469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, 821c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct sk_buff *req) 822469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 823c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg struct ieee80211_mgmt *mgmt = (void *)req->data; 824469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 825469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_local *local = sdata->local; 826c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg int tx_last_beacon, len = req->len; 827469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct sk_buff *skb; 828c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg struct beacon_data *presp; 829469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u8 *pos, *end; 830469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8318d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_assert_lock(sdata); 8327a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 83340b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg presp = rcu_dereference_protected(ifibss->presp, 8348d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg lockdep_is_held(&sdata->wdev.mtx)); 83540b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg 836469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (ifibss->state != IEEE80211_IBSS_MLME_JOINED || 83740b275b69ee660274b77fb612b0db31fd282fc3fJohannes Berg len < 24 + 2 || !presp) 838469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 839469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8402448798133d747ad339e57099e32a1d1e68aca1cJohannes Berg tx_last_beacon = drv_tx_last_beacon(local); 841469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 842bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, 843bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg "RX ProbeReq SA=%pM DA=%pM BSSID=%pM (tx_last_beacon=%d)\n", 844bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa, mgmt->da, mgmt->bssid, tx_last_beacon); 845469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 8461ed76487ce115110171480deabd3cd4656f9803eFelix Fietkau if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da)) 847469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 848469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 849b203ca39126bad99583c908be587df067820a1eaJoe Perches if (!ether_addr_equal(mgmt->bssid, ifibss->bssid) && 850888d04dfbe7e09f930fdaafb257cce2c54c9c3f3Felix Fietkau !is_broadcast_ether_addr(mgmt->bssid)) 851469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 852469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 853469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg end = ((u8 *) mgmt) + len; 854469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos = mgmt->u.probe_req.variable; 855469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[0] != WLAN_EID_SSID || 856469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg pos + 2 + pos[1] > end) { 857bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg ibss_dbg(sdata, "Invalid SSID IE in ProbeReq from %pM\n", 858bdcbd8e0e3ffdad32b14b6373e67bfcf5fd3f002Johannes Berg mgmt->sa); 859469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 860469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 861469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (pos[1] != 0 && 862469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (pos[1] != ifibss->ssid_len || 8630da780c269957783d341fc3559e6b4c9912af7b4Benoit Papillault memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) { 864469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Ignore ProbeReq for foreign SSID */ 865469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 866469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 867469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 868469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg /* Reply with ProbeResp */ 869c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg skb = dev_alloc_skb(local->tx_headroom + presp->head_len); 870469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (!skb) 871469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 872469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 873c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg skb_reserve(skb, local->tx_headroom); 874c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg memcpy(skb_put(skb, presp->head_len), presp->head, presp->head_len); 875c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg 876c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg memcpy(((struct ieee80211_mgmt *) skb->data)->da, mgmt->sa, ETH_ALEN); 877c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg ibss_dbg(sdata, "Sending ProbeResp to %pM\n", mgmt->sa); 87862ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 87962ae67be31c2346b6d74653a148ddbd1b9a94424Johannes Berg ieee80211_tx_skb(sdata, skb); 880469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 881469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 882d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbachstatic 883d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbachvoid ieee80211_rx_mgmt_probe_beacon(struct ieee80211_sub_if_data *sdata, 884d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach struct ieee80211_mgmt *mgmt, size_t len, 885d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach struct ieee80211_rx_status *rx_status) 886469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 887469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg size_t baselen; 888469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee802_11_elems elems; 889469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 890d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach BUILD_BUG_ON(offsetof(typeof(mgmt->u.probe_resp), variable) != 891d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach offsetof(typeof(mgmt->u.beacon), variable)); 892d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach 893d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach /* 894d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach * either beacon or probe_resp but the variable field is at the 895d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach * same offset 896d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach */ 897469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 898469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg if (baselen > len) 899469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg return; 900469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 901469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 902b2e506bfc4d752b68a0ccaae1e977898263eba4cJohannes Berg false, &elems); 903469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 904d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); 905469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 906469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9071fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 9081fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct sk_buff *skb) 909469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 910469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_rx_status *rx_status; 911469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_mgmt *mgmt; 912469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg u16 fc; 913469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 914f1d58c2521eb160178b2151d6326d8dc5d7c8560Johannes Berg rx_status = IEEE80211_SKB_RXCB(skb); 915469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg mgmt = (struct ieee80211_mgmt *) skb->data; 916469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg fc = le16_to_cpu(mgmt->frame_control); 917469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9188d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_lock(sdata); 9197a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 920c926d006c1514cfb3572893f41f2324e96823661Tim Harvey if (!sdata->u.ibss.ssid_len) 921c926d006c1514cfb3572893f41f2324e96823661Tim Harvey goto mgmt_out; /* not ready to merge yet */ 922c926d006c1514cfb3572893f41f2324e96823661Tim Harvey 923469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (fc & IEEE80211_FCTL_STYPE) { 924469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_REQ: 925c269a20393500e84e8cbae23ca6d65e1107433c4Johannes Berg ieee80211_rx_mgmt_probe_req(sdata, skb); 926469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 927469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_PROBE_RESP: 928469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_BEACON: 929d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach ieee80211_rx_mgmt_probe_beacon(sdata, mgmt, skb->len, 930d45c41722a3eca639ced2c4c93665ced229b1da9Emmanuel Grumbach rx_status); 931469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 932469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_STYPE_AUTH: 933469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_rx_mgmt_auth_ibss(sdata, mgmt, skb->len); 934469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 9352cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli case IEEE80211_STYPE_DEAUTH: 9362cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli ieee80211_rx_mgmt_deauth_ibss(sdata, mgmt, skb->len); 9372cc59e784b54fb95accbd5f5a9d12041eec72dbcAntonio Quartulli break; 938469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 9397a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 940c926d006c1514cfb3572893f41f2324e96823661Tim Harvey mgmt_out: 9418d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_unlock(sdata); 942469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 943469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9441fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata) 945469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 9461fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 9478bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 948469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9498d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_lock(sdata); 9507a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 9517a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg /* 9527a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * Work could be scheduled after scan or similar 9537a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * when we aren't even joined (or trying) with a 9547a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg * network. 9557a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg */ 9567a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg if (!ifibss->ssid_len) 9577a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg goto out; 958469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9598bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 9608bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg while (!list_empty(&ifibss->incomplete_stations)) { 9618bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = list_first_entry(&ifibss->incomplete_stations, 9628bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info, list); 9638bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_del(&sta->list); 9648bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 9658bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 96652874a5e3917dde3b081521b014d6e4b226aacffAntonio Quartulli ieee80211_ibss_finish_sta(sta); 9678bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg rcu_read_unlock(); 9688bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 9698bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 9708bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 9718bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 972469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg switch (ifibss->state) { 973469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_SEARCH: 974469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_find_ibss(sdata); 975469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 976469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg case IEEE80211_IBSS_MLME_JOINED: 977469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg ieee80211_sta_merge_ibss(sdata); 978469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 979469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg default: 980469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg WARN_ON(1); 981469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg break; 982469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 983469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 9847a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg out: 9858d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg sdata_unlock(sdata); 9863a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg} 9873a4d4aa2d38e5305b5e93dffdc9dd2f975129328Johannes Berg 988469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergstatic void ieee80211_ibss_timer(unsigned long data) 989469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 990469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_sub_if_data *sdata = 991469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (struct ieee80211_sub_if_data *) data; 9925bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 993a61829437e68c8b2036cf5005ed0e875451c9120Stanislaw Gruszka ieee80211_queue_work(&sdata->local->hw, &sdata->work); 9945bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg} 9955bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg 996469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata) 997469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 998469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 999469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1000469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg setup_timer(&ifibss->timer, ieee80211_ibss_timer, 1001469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg (unsigned long) sdata); 10028bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg INIT_LIST_HEAD(&ifibss->incomplete_stations); 10038bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_init(&ifibss->incomplete_lock); 1004469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1005469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1006469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg/* scan finished notification */ 1007469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Bergvoid ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local) 1008469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg{ 1009af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct ieee80211_sub_if_data *sdata; 1010469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 101129b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_lock(&local->iflist_mtx); 101229b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg list_for_each_entry(sdata, &local->interfaces, list) { 10139607e6b66a0d25ca63b70d54a4283fa13d8f7c9dJohannes Berg if (!ieee80211_sdata_running(sdata)) 10140e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg continue; 1015af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->vif.type != NL80211_IFTYPE_ADHOC) 1016af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg continue; 1017af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.last_scan_completed = jiffies; 10187a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg ieee80211_queue_work(&local->hw, &sdata->work); 1019469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg } 102029b4a4f7c7b588b5568edd0da42f38623b81fc66Johannes Berg mutex_unlock(&local->iflist_mtx); 1021469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg} 1022469002983fc90c2ff0959e2b03335c0fe2e4d5a9Johannes Berg 1023af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1024af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg struct cfg80211_ibss_params *params) 1025af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 1026ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich u32 changed = 0; 1027af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1028af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->bssid) { 1029af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN); 1030af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = true; 1031af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } else 1032af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_bssid = false; 1033af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1034fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg sdata->u.ibss.privacy = params->privacy; 1035267335d63b808dc861f3a4dc81a605489a8a13acAntonio Quartulli sdata->u.ibss.control_port = params->control_port; 1036fbd2c8dcbc69616d2e15b8a269a86b3a05d45aeaTeemu Paasikivi sdata->u.ibss.basic_rates = params->basic_rates; 1037dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau memcpy(sdata->vif.bss_conf.mcast_rate, params->mcast_rate, 1038dd5b4cc71cd09c33e1579cc6d5720656e94e52deFelix Fietkau sizeof(params->mcast_rate)); 1039fffd0934b9390f34bec45762192b7edd3b12b4b5Johannes Berg 104057c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg sdata->vif.bss_conf.beacon_int = params->beacon_interval; 104157c4d7b4c4986037be51476b8e3025d5ba18d8b8Johannes Berg 10423aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich sdata->u.ibss.chandef = params->chandef; 1043af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.fixed_channel = params->channel_fixed; 1044af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1045af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (params->ie) { 1046af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len, 1047af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg GFP_KERNEL); 1048af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg if (sdata->u.ibss.ie) 1049af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ie_len = params->ie_len; 1050af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg } 1051af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1052af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH; 1053af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg sdata->u.ibss.ibss_join_req = jiffies; 1054af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1055badecb001a310408d3473b1fc2ed5aefd0bc92a9Antonio Quartulli memcpy(sdata->u.ibss.ssid, params->ssid, params->ssid_len); 10560e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg sdata->u.ibss.ssid_len = params->ssid_len; 10570e41f715c04f85a40ae6531d660be2241717be1cJohannes Berg 1058822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich memcpy(&sdata->u.ibss.ht_capa, ¶ms->ht_capa, 1059822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich sizeof(sdata->u.ibss.ht_capa)); 1060822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich memcpy(&sdata->u.ibss.ht_capa_mask, ¶ms->ht_capa_mask, 1061822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich sizeof(sdata->u.ibss.ht_capa_mask)); 1062822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich 1063ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich /* 1064ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 802.11n-2009 9.13.3.1: In an IBSS, the HT Protection field is 1065ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * reserved, but an HT STA shall protect HT transmissions as though 1066ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * the HT Protection field were set to non-HT mixed mode. 1067ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * 1068ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * In an IBSS, the RIFS Mode field of the HT Operation element is 1069ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * also reserved, but an HT STA shall operate as though this field 1070ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich * were set to 1. 1071ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich */ 1072ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1073ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich sdata->vif.bss_conf.ht_operation_mode |= 1074ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED 1075ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich | IEEE80211_HT_PARAM_RIFS_MODE; 1076ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 1077ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich changed |= BSS_CHANGED_HT; 1078ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich ieee80211_bss_info_change_notify(sdata, changed); 1079ff3cc5f40f36db1a60a8f1051be7fbc92233419bSimon Wunderlich 108004ecd2578e712c301fa1369d2a8f298a2b4b146aJohannes Berg sdata->smps_mode = IEEE80211_SMPS_OFF; 108104ecd2578e712c301fa1369d2a8f298a2b4b146aJohannes Berg sdata->needed_rx_chains = sdata->local->rx_chains; 108204ecd2578e712c301fa1369d2a8f298a2b4b146aJohannes Berg 108364592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg ieee80211_queue_work(&sdata->local->hw, &sdata->work); 1084af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1085af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1086af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1087af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1088af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Bergint ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) 1089af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg{ 10905ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_if_ibss *ifibss = &sdata->u.ibss; 10915ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct ieee80211_local *local = sdata->local; 10925ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi struct cfg80211_bss *cbss; 10935ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi u16 capability; 10947a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg int active_ibss; 10958bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info *sta; 1096c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg struct beacon_data *presp; 10977a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 10985ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi active_ibss = ieee80211_sta_active_ibss(sdata); 10995ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11005ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) { 11015ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability = WLAN_CAPABILITY_IBSS; 11025ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11035ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (ifibss->privacy) 11045ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability |= WLAN_CAPABILITY_PRIVACY; 11055ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11063aede78aad2a7e39a81b4b0caa771d40254a6787Simon Wunderlich cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->chandef.chan, 11075ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->bssid, ifibss->ssid, 11085ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi ifibss->ssid_len, WLAN_CAPABILITY_IBSS | 11095ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi WLAN_CAPABILITY_PRIVACY, 11105ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi capability); 11115ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi 11125ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi if (cbss) { 11135ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi cfg80211_unlink_bss(local->hw.wiphy, cbss); 11145b112d3d098c97b867cc580f590395cd1e72f18cJohannes Berg cfg80211_put_bss(local->hw.wiphy, cbss); 11155ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 11165ea096c0c85e80335889539899af9a4717976e0bTeemu Paasikivi } 1117af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1118b78a4932f5fb11fadf41e69c606a33fa6787574cSimon Wunderlich ifibss->state = IEEE80211_IBSS_MLME_SEARCH; 1119b78a4932f5fb11fadf41e69c606a33fa6787574cSimon Wunderlich memset(ifibss->bssid, 0, ETH_ALEN); 1120b78a4932f5fb11fadf41e69c606a33fa6787574cSimon Wunderlich ifibss->ssid_len = 0; 1121b78a4932f5fb11fadf41e69c606a33fa6787574cSimon Wunderlich 1122b998e8bb3e1c6eeae5eab9d6a434563270286c3bJohannes Berg sta_info_flush(sdata); 11238bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 11248bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 11258bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg while (!list_empty(&ifibss->incomplete_stations)) { 11268bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta = list_first_entry(&ifibss->incomplete_stations, 11278bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg struct sta_info, list); 11288bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg list_del(&sta->list); 11298bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 11308bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 11318bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg sta_info_free(local, sta); 11328bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_lock_bh(&ifibss->incomplete_lock); 11338bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg } 11348bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg spin_unlock_bh(&ifibss->incomplete_lock); 11358bf11d8d081106c3cce8281a0150e716f8ac5d22Johannes Berg 113686a2ea4134b48f6371103cfceb521bf2d2bf76cdEliad Peller netif_carrier_off(sdata->dev); 1137af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 1138af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg /* remove beacon */ 1139af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg kfree(sdata->u.ibss.ie); 1140c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg presp = rcu_dereference_protected(ifibss->presp, 11418d61ffa5e01c5f676431d12caba17db164a48a86Johannes Berg lockdep_is_held(&sdata->wdev.mtx)); 1142a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(sdata->u.ibss.presp, NULL); 1143822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich 1144822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich /* on the next join, re-program HT parameters */ 1145822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich memset(&ifibss->ht_capa, 0, sizeof(ifibss->ht_capa)); 1146822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich memset(&ifibss->ht_capa_mask, 0, sizeof(ifibss->ht_capa_mask)); 1147822854b0b1d8f893279ca717f3d084aa5fcd9ff5Simon Wunderlich 11488fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg sdata->vif.bss_conf.ibss_joined = false; 1149c13a765bd96f4e2f52d218ee6e5c0715380eeeb8Sujith Manoharan sdata->vif.bss_conf.ibss_creator = false; 1150d6a83228823fc0cc8d79d95c9f0bf568b7317862Johannes Berg sdata->vif.bss_conf.enable_beacon = false; 11510ca54f6c5fd4ce58aa044d1fc7f00d7f6cf2801cMarek Puzyniak sdata->vif.bss_conf.ssid_len = 0; 1152d6a83228823fc0cc8d79d95c9f0bf568b7317862Johannes Berg clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 11538fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | 11548fc214ba958648ab111a173f2db7b0e1dfed5b11Johannes Berg BSS_CHANGED_IBSS); 1155af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg synchronize_rcu(); 1156c3ffeab4345830aadfc78444933754330f1339e7Johannes Berg kfree(presp); 1157af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg 115835f20c14a103ca2c7062999e934a513b83d84de6Johannes Berg skb_queue_purge(&sdata->skb_queue); 11595cff20e6c5a6591a79d3b027af222870f52bb550Johannes Berg 1160bc05d19f4b884b1dbbce48912710ae3f972c89d2Johannes Berg del_timer_sync(&sdata->u.ibss.timer); 11617a17a33c0da37f8d24222c967550d19dabf13617Johannes Berg 1162af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg return 0; 1163af8cdcd828ad751fae8e6cbfe94eef9f2f23b14bJohannes Berg} 1164