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1493 lines
42 KiB
1493 lines
42 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright 2002-2005, Instant802 Networks, Inc. |
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* Copyright 2005-2006, Devicescape Software, Inc. |
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* Copyright 2006-2007 Jiri Benc <[email protected]> |
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* Copyright 2013-2014 Intel Mobile Communications GmbH |
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* Copyright (C) 2017 Intel Deutschland GmbH |
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* Copyright (C) 2018-2021 Intel Corporation |
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*/ |
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|
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#include <net/mac80211.h> |
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#include <linux/module.h> |
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#include <linux/fips.h> |
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#include <linux/init.h> |
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#include <linux/netdevice.h> |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <linux/skbuff.h> |
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#include <linux/etherdevice.h> |
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#include <linux/if_arp.h> |
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#include <linux/rtnetlink.h> |
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#include <linux/bitmap.h> |
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#include <linux/inetdevice.h> |
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#include <net/net_namespace.h> |
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#include <net/cfg80211.h> |
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#include <net/addrconf.h> |
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|
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#include "ieee80211_i.h" |
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#include "driver-ops.h" |
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#include "rate.h" |
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#include "mesh.h" |
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#include "wep.h" |
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#include "led.h" |
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#include "debugfs.h" |
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|
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void ieee80211_configure_filter(struct ieee80211_local *local) |
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{ |
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u64 mc; |
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unsigned int changed_flags; |
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unsigned int new_flags = 0; |
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|
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if (atomic_read(&local->iff_allmultis)) |
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new_flags |= FIF_ALLMULTI; |
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|
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if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) || |
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test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) |
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new_flags |= FIF_BCN_PRBRESP_PROMISC; |
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if (local->fif_probe_req || local->probe_req_reg) |
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new_flags |= FIF_PROBE_REQ; |
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if (local->fif_fcsfail) |
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new_flags |= FIF_FCSFAIL; |
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if (local->fif_plcpfail) |
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new_flags |= FIF_PLCPFAIL; |
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if (local->fif_control) |
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new_flags |= FIF_CONTROL; |
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if (local->fif_other_bss) |
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new_flags |= FIF_OTHER_BSS; |
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if (local->fif_pspoll) |
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new_flags |= FIF_PSPOLL; |
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if (local->rx_mcast_action_reg) |
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new_flags |= FIF_MCAST_ACTION; |
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spin_lock_bh(&local->filter_lock); |
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changed_flags = local->filter_flags ^ new_flags; |
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mc = drv_prepare_multicast(local, &local->mc_list); |
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spin_unlock_bh(&local->filter_lock); |
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/* be a bit nasty */ |
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new_flags |= (1<<31); |
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drv_configure_filter(local, changed_flags, &new_flags, mc); |
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|
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WARN_ON(new_flags & (1<<31)); |
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local->filter_flags = new_flags & ~(1<<31); |
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} |
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static void ieee80211_reconfig_filter(struct work_struct *work) |
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{ |
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struct ieee80211_local *local = |
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container_of(work, struct ieee80211_local, reconfig_filter); |
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|
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ieee80211_configure_filter(local); |
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} |
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static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) |
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{ |
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struct ieee80211_sub_if_data *sdata; |
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struct cfg80211_chan_def chandef = {}; |
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u32 changed = 0; |
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int power; |
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u32 offchannel_flag; |
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offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
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if (local->scan_chandef.chan) { |
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chandef = local->scan_chandef; |
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} else if (local->tmp_channel) { |
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chandef.chan = local->tmp_channel; |
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chandef.width = NL80211_CHAN_WIDTH_20_NOHT; |
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chandef.center_freq1 = chandef.chan->center_freq; |
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chandef.freq1_offset = chandef.chan->freq_offset; |
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} else |
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chandef = local->_oper_chandef; |
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|
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WARN(!cfg80211_chandef_valid(&chandef), |
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"control:%d.%03d MHz width:%d center: %d.%03d/%d MHz", |
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chandef.chan->center_freq, chandef.chan->freq_offset, |
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chandef.width, chandef.center_freq1, chandef.freq1_offset, |
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chandef.center_freq2); |
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if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef)) |
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local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; |
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else |
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local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; |
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offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
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if (offchannel_flag || |
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!cfg80211_chandef_identical(&local->hw.conf.chandef, |
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&local->_oper_chandef)) { |
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local->hw.conf.chandef = chandef; |
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changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
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} |
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|
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if (!conf_is_ht(&local->hw.conf)) { |
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/* |
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* mac80211.h documents that this is only valid |
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* when the channel is set to an HT type, and |
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* that otherwise STATIC is used. |
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*/ |
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local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; |
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} else if (local->hw.conf.smps_mode != local->smps_mode) { |
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local->hw.conf.smps_mode = local->smps_mode; |
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changed |= IEEE80211_CONF_CHANGE_SMPS; |
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} |
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power = ieee80211_chandef_max_power(&chandef); |
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|
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rcu_read_lock(); |
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list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
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if (!rcu_access_pointer(sdata->vif.chanctx_conf)) |
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continue; |
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if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
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continue; |
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if (sdata->vif.bss_conf.txpower == INT_MIN) |
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continue; |
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power = min(power, sdata->vif.bss_conf.txpower); |
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} |
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rcu_read_unlock(); |
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|
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if (local->hw.conf.power_level != power) { |
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changed |= IEEE80211_CONF_CHANGE_POWER; |
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local->hw.conf.power_level = power; |
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} |
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|
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return changed; |
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} |
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int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
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{ |
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int ret = 0; |
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might_sleep(); |
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if (!local->use_chanctx) |
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changed |= ieee80211_hw_conf_chan(local); |
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else |
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changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL | |
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IEEE80211_CONF_CHANGE_POWER); |
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|
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if (changed && local->open_count) { |
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ret = drv_config(local, changed); |
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/* |
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* Goal: |
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* HW reconfiguration should never fail, the driver has told |
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* us what it can support so it should live up to that promise. |
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* |
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* Current status: |
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* rfkill is not integrated with mac80211 and a |
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* configuration command can thus fail if hardware rfkill |
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* is enabled |
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* |
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* FIXME: integrate rfkill with mac80211 and then add this |
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* WARN_ON() back |
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* |
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*/ |
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/* WARN_ON(ret); */ |
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} |
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return ret; |
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} |
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void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
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u32 changed) |
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{ |
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struct ieee80211_local *local = sdata->local; |
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|
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if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
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return; |
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drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
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} |
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u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
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{ |
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sdata->vif.bss_conf.use_cts_prot = false; |
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sdata->vif.bss_conf.use_short_preamble = false; |
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sdata->vif.bss_conf.use_short_slot = false; |
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return BSS_CHANGED_ERP_CTS_PROT | |
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BSS_CHANGED_ERP_PREAMBLE | |
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BSS_CHANGED_ERP_SLOT; |
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} |
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static void ieee80211_tasklet_handler(struct tasklet_struct *t) |
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{ |
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struct ieee80211_local *local = from_tasklet(local, t, tasklet); |
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struct sk_buff *skb; |
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|
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while ((skb = skb_dequeue(&local->skb_queue)) || |
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(skb = skb_dequeue(&local->skb_queue_unreliable))) { |
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switch (skb->pkt_type) { |
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case IEEE80211_RX_MSG: |
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/* Clear skb->pkt_type in order to not confuse kernel |
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* netstack. */ |
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skb->pkt_type = 0; |
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ieee80211_rx(&local->hw, skb); |
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break; |
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case IEEE80211_TX_STATUS_MSG: |
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skb->pkt_type = 0; |
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ieee80211_tx_status(&local->hw, skb); |
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break; |
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default: |
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WARN(1, "mac80211: Packet is of unknown type %d\n", |
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skb->pkt_type); |
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dev_kfree_skb(skb); |
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break; |
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} |
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} |
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} |
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static void ieee80211_restart_work(struct work_struct *work) |
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{ |
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struct ieee80211_local *local = |
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container_of(work, struct ieee80211_local, restart_work); |
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struct ieee80211_sub_if_data *sdata; |
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int ret; |
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|
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/* wait for scan work complete */ |
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flush_workqueue(local->workqueue); |
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flush_work(&local->sched_scan_stopped_work); |
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flush_work(&local->radar_detected_work); |
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rtnl_lock(); |
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/* we might do interface manipulations, so need both */ |
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wiphy_lock(local->hw.wiphy); |
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WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), |
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"%s called with hardware scan in progress\n", __func__); |
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list_for_each_entry(sdata, &local->interfaces, list) { |
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/* |
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* XXX: there may be more work for other vif types and even |
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* for station mode: a good thing would be to run most of |
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* the iface type's dependent _stop (ieee80211_mg_stop, |
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* ieee80211_ibss_stop) etc... |
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* For now, fix only the specific bug that was seen: race |
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* between csa_connection_drop_work and us. |
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*/ |
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if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
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/* |
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* This worker is scheduled from the iface worker that |
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* runs on mac80211's workqueue, so we can't be |
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* scheduling this worker after the cancel right here. |
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* The exception is ieee80211_chswitch_done. |
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* Then we can have a race... |
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*/ |
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cancel_work_sync(&sdata->u.mgd.csa_connection_drop_work); |
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if (sdata->vif.csa_active) { |
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sdata_lock(sdata); |
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ieee80211_sta_connection_lost(sdata, |
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sdata->u.mgd.associated->bssid, |
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WLAN_REASON_UNSPECIFIED, false); |
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sdata_unlock(sdata); |
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} |
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} |
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flush_delayed_work(&sdata->dec_tailroom_needed_wk); |
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} |
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ieee80211_scan_cancel(local); |
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/* make sure any new ROC will consider local->in_reconfig */ |
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flush_delayed_work(&local->roc_work); |
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flush_work(&local->hw_roc_done); |
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/* wait for all packet processing to be done */ |
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synchronize_net(); |
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ret = ieee80211_reconfig(local); |
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wiphy_unlock(local->hw.wiphy); |
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if (ret) |
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cfg80211_shutdown_all_interfaces(local->hw.wiphy); |
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rtnl_unlock(); |
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} |
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void ieee80211_restart_hw(struct ieee80211_hw *hw) |
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{ |
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struct ieee80211_local *local = hw_to_local(hw); |
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trace_api_restart_hw(local); |
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wiphy_info(hw->wiphy, |
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"Hardware restart was requested\n"); |
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/* use this reason, ieee80211_reconfig will unblock it */ |
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ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
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IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
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false); |
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/* |
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* Stop all Rx during the reconfig. We don't want state changes |
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* or driver callbacks while this is in progress. |
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*/ |
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local->in_reconfig = true; |
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barrier(); |
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queue_work(system_freezable_wq, &local->restart_work); |
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} |
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EXPORT_SYMBOL(ieee80211_restart_hw); |
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#ifdef CONFIG_INET |
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static int ieee80211_ifa_changed(struct notifier_block *nb, |
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unsigned long data, void *arg) |
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{ |
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struct in_ifaddr *ifa = arg; |
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struct ieee80211_local *local = |
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container_of(nb, struct ieee80211_local, |
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ifa_notifier); |
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struct net_device *ndev = ifa->ifa_dev->dev; |
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struct wireless_dev *wdev = ndev->ieee80211_ptr; |
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struct in_device *idev; |
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struct ieee80211_sub_if_data *sdata; |
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struct ieee80211_bss_conf *bss_conf; |
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struct ieee80211_if_managed *ifmgd; |
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int c = 0; |
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/* Make sure it's our interface that got changed */ |
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if (!wdev) |
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return NOTIFY_DONE; |
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if (wdev->wiphy != local->hw.wiphy) |
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return NOTIFY_DONE; |
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sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
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bss_conf = &sdata->vif.bss_conf; |
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/* ARP filtering is only supported in managed mode */ |
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if (sdata->vif.type != NL80211_IFTYPE_STATION) |
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return NOTIFY_DONE; |
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idev = __in_dev_get_rtnl(sdata->dev); |
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if (!idev) |
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return NOTIFY_DONE; |
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ifmgd = &sdata->u.mgd; |
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sdata_lock(sdata); |
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/* Copy the addresses to the bss_conf list */ |
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ifa = rtnl_dereference(idev->ifa_list); |
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while (ifa) { |
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if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) |
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bss_conf->arp_addr_list[c] = ifa->ifa_address; |
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ifa = rtnl_dereference(ifa->ifa_next); |
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c++; |
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} |
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bss_conf->arp_addr_cnt = c; |
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/* Configure driver only if associated (which also implies it is up) */ |
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if (ifmgd->associated) |
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ieee80211_bss_info_change_notify(sdata, |
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BSS_CHANGED_ARP_FILTER); |
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sdata_unlock(sdata); |
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return NOTIFY_OK; |
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} |
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#endif |
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#if IS_ENABLED(CONFIG_IPV6) |
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static int ieee80211_ifa6_changed(struct notifier_block *nb, |
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unsigned long data, void *arg) |
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{ |
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struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; |
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struct inet6_dev *idev = ifa->idev; |
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struct net_device *ndev = ifa->idev->dev; |
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struct ieee80211_local *local = |
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container_of(nb, struct ieee80211_local, ifa6_notifier); |
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struct wireless_dev *wdev = ndev->ieee80211_ptr; |
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struct ieee80211_sub_if_data *sdata; |
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|
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/* Make sure it's our interface that got changed */ |
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if (!wdev || wdev->wiphy != local->hw.wiphy) |
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return NOTIFY_DONE; |
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sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
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|
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/* |
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* For now only support station mode. This is mostly because |
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* doing AP would have to handle AP_VLAN in some way ... |
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*/ |
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if (sdata->vif.type != NL80211_IFTYPE_STATION) |
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return NOTIFY_DONE; |
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|
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drv_ipv6_addr_change(local, sdata, idev); |
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|
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return NOTIFY_OK; |
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} |
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#endif |
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|
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/* There isn't a lot of sense in it, but you can transmit anything you like */ |
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static const struct ieee80211_txrx_stypes |
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ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { |
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[NL80211_IFTYPE_ADHOC] = { |
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.tx = 0xffff, |
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.rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
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BIT(IEEE80211_STYPE_AUTH >> 4) | |
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BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
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BIT(IEEE80211_STYPE_PROBE_REQ >> 4), |
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}, |
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[NL80211_IFTYPE_STATION] = { |
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.tx = 0xffff, |
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/* |
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* To support Pre Association Security Negotiation (PASN) while |
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* already associated to one AP, allow user space to register to |
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* Rx authentication frames, so that the user space logic would |
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* be able to receive/handle authentication frames from a |
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* different AP as part of PASN. |
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* It is expected that user space would intelligently register |
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* for Rx authentication frames, i.e., only when PASN is used |
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* and configure a match filter only for PASN authentication |
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* algorithm, as otherwise the MLME functionality of mac80211 |
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* would be broken. |
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*/ |
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.rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
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BIT(IEEE80211_STYPE_AUTH >> 4) | |
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BIT(IEEE80211_STYPE_PROBE_REQ >> 4), |
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}, |
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[NL80211_IFTYPE_AP] = { |
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.tx = 0xffff, |
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.rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | |
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BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | |
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BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | |
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BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
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BIT(IEEE80211_STYPE_AUTH >> 4) | |
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BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
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BIT(IEEE80211_STYPE_ACTION >> 4), |
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}, |
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[NL80211_IFTYPE_AP_VLAN] = { |
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/* copy AP */ |
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.tx = 0xffff, |
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.rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | |
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BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | |
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BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | |
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BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
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BIT(IEEE80211_STYPE_AUTH >> 4) | |
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BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
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BIT(IEEE80211_STYPE_ACTION >> 4), |
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}, |
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[NL80211_IFTYPE_P2P_CLIENT] = { |
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.tx = 0xffff, |
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.rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
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BIT(IEEE80211_STYPE_PROBE_REQ >> 4), |
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}, |
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[NL80211_IFTYPE_P2P_GO] = { |
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.tx = 0xffff, |
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.rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | |
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BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | |
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BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | |
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BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
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BIT(IEEE80211_STYPE_AUTH >> 4) | |
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BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
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BIT(IEEE80211_STYPE_ACTION >> 4), |
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}, |
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[NL80211_IFTYPE_MESH_POINT] = { |
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.tx = 0xffff, |
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.rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
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BIT(IEEE80211_STYPE_AUTH >> 4) | |
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BIT(IEEE80211_STYPE_DEAUTH >> 4), |
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}, |
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[NL80211_IFTYPE_P2P_DEVICE] = { |
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.tx = 0xffff, |
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.rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
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BIT(IEEE80211_STYPE_PROBE_REQ >> 4), |
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}, |
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}; |
|
|
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static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { |
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.ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | |
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IEEE80211_HT_AMPDU_PARM_DENSITY, |
|
|
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.cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
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IEEE80211_HT_CAP_MAX_AMSDU | |
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IEEE80211_HT_CAP_SGI_20 | |
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IEEE80211_HT_CAP_SGI_40 | |
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IEEE80211_HT_CAP_TX_STBC | |
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IEEE80211_HT_CAP_RX_STBC | |
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IEEE80211_HT_CAP_LDPC_CODING | |
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IEEE80211_HT_CAP_40MHZ_INTOLERANT), |
|
.mcs = { |
|
.rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, |
|
0xff, 0xff, 0xff, 0xff, 0xff, }, |
|
}, |
|
}; |
|
|
|
static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { |
|
.vht_cap_info = |
|
cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | |
|
IEEE80211_VHT_CAP_SHORT_GI_80 | |
|
IEEE80211_VHT_CAP_SHORT_GI_160 | |
|
IEEE80211_VHT_CAP_RXSTBC_MASK | |
|
IEEE80211_VHT_CAP_TXSTBC | |
|
IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | |
|
IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | |
|
IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | |
|
IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | |
|
IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), |
|
.supp_mcs = { |
|
.rx_mcs_map = cpu_to_le16(~0), |
|
.tx_mcs_map = cpu_to_le16(~0), |
|
}, |
|
}; |
|
|
|
struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, |
|
const struct ieee80211_ops *ops, |
|
const char *requested_name) |
|
{ |
|
struct ieee80211_local *local; |
|
int priv_size, i; |
|
struct wiphy *wiphy; |
|
bool use_chanctx; |
|
|
|
if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || |
|
!ops->add_interface || !ops->remove_interface || |
|
!ops->configure_filter)) |
|
return NULL; |
|
|
|
if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) |
|
return NULL; |
|
|
|
/* check all or no channel context operations exist */ |
|
i = !!ops->add_chanctx + !!ops->remove_chanctx + |
|
!!ops->change_chanctx + !!ops->assign_vif_chanctx + |
|
!!ops->unassign_vif_chanctx; |
|
if (WARN_ON(i != 0 && i != 5)) |
|
return NULL; |
|
use_chanctx = i == 5; |
|
|
|
/* Ensure 32-byte alignment of our private data and hw private data. |
|
* We use the wiphy priv data for both our ieee80211_local and for |
|
* the driver's private data |
|
* |
|
* In memory it'll be like this: |
|
* |
|
* +-------------------------+ |
|
* | struct wiphy | |
|
* +-------------------------+ |
|
* | struct ieee80211_local | |
|
* +-------------------------+ |
|
* | driver's private data | |
|
* +-------------------------+ |
|
* |
|
*/ |
|
priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
|
|
|
wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name); |
|
|
|
if (!wiphy) |
|
return NULL; |
|
|
|
wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
|
|
|
wiphy->privid = mac80211_wiphy_privid; |
|
|
|
wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
|
WIPHY_FLAG_4ADDR_AP | |
|
WIPHY_FLAG_4ADDR_STATION | |
|
WIPHY_FLAG_REPORTS_OBSS | |
|
WIPHY_FLAG_OFFCHAN_TX; |
|
|
|
if (!use_chanctx || ops->remain_on_channel) |
|
wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; |
|
|
|
wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | |
|
NL80211_FEATURE_SAE | |
|
NL80211_FEATURE_HT_IBSS | |
|
NL80211_FEATURE_VIF_TXPOWER | |
|
NL80211_FEATURE_MAC_ON_CREATE | |
|
NL80211_FEATURE_USERSPACE_MPM | |
|
NL80211_FEATURE_FULL_AP_CLIENT_STATE; |
|
wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_FILS_STA); |
|
wiphy_ext_feature_set(wiphy, |
|
NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211); |
|
wiphy_ext_feature_set(wiphy, |
|
NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH); |
|
wiphy_ext_feature_set(wiphy, |
|
NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211_TX_STATUS); |
|
wiphy_ext_feature_set(wiphy, |
|
NL80211_EXT_FEATURE_SCAN_FREQ_KHZ); |
|
|
|
if (!ops->hw_scan) { |
|
wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | |
|
NL80211_FEATURE_AP_SCAN; |
|
/* |
|
* if the driver behaves correctly using the probe request |
|
* (template) from mac80211, then both of these should be |
|
* supported even with hw scan - but let drivers opt in. |
|
*/ |
|
wiphy_ext_feature_set(wiphy, |
|
NL80211_EXT_FEATURE_SCAN_RANDOM_SN); |
|
wiphy_ext_feature_set(wiphy, |
|
NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT); |
|
} |
|
|
|
if (!ops->set_key) |
|
wiphy->flags |= WIPHY_FLAG_IBSS_RSN; |
|
|
|
if (ops->wake_tx_queue) |
|
wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_TXQS); |
|
|
|
wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM); |
|
|
|
wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
|
|
|
local = wiphy_priv(wiphy); |
|
|
|
if (sta_info_init(local)) |
|
goto err_free; |
|
|
|
local->hw.wiphy = wiphy; |
|
|
|
local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
|
|
|
local->ops = ops; |
|
local->use_chanctx = use_chanctx; |
|
|
|
/* |
|
* We need a bit of data queued to build aggregates properly, so |
|
* instruct the TCP stack to allow more than a single ms of data |
|
* to be queued in the stack. The value is a bit-shift of 1 |
|
* second, so 7 is ~8ms of queued data. Only affects local TCP |
|
* sockets. |
|
* This is the default, anyhow - drivers may need to override it |
|
* for local reasons (longer buffers, longer completion time, or |
|
* similar). |
|
*/ |
|
local->hw.tx_sk_pacing_shift = 7; |
|
|
|
/* set up some defaults */ |
|
local->hw.queues = 1; |
|
local->hw.max_rates = 1; |
|
local->hw.max_report_rates = 0; |
|
local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; |
|
local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HT; |
|
local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; |
|
local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
|
local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; |
|
local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
|
IEEE80211_RADIOTAP_MCS_HAVE_GI | |
|
IEEE80211_RADIOTAP_MCS_HAVE_BW; |
|
local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
|
IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; |
|
local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
|
local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; |
|
local->hw.max_mtu = IEEE80211_MAX_DATA_LEN; |
|
local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; |
|
wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; |
|
wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; |
|
|
|
local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF; |
|
|
|
wiphy->extended_capabilities = local->ext_capa; |
|
wiphy->extended_capabilities_mask = local->ext_capa; |
|
wiphy->extended_capabilities_len = |
|
ARRAY_SIZE(local->ext_capa); |
|
|
|
INIT_LIST_HEAD(&local->interfaces); |
|
INIT_LIST_HEAD(&local->mon_list); |
|
|
|
__hw_addr_init(&local->mc_list); |
|
|
|
mutex_init(&local->iflist_mtx); |
|
mutex_init(&local->mtx); |
|
|
|
mutex_init(&local->key_mtx); |
|
spin_lock_init(&local->filter_lock); |
|
spin_lock_init(&local->rx_path_lock); |
|
spin_lock_init(&local->queue_stop_reason_lock); |
|
|
|
for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
|
struct airtime_sched_info *air_sched = &local->airtime[i]; |
|
|
|
air_sched->active_txqs = RB_ROOT_CACHED; |
|
INIT_LIST_HEAD(&air_sched->active_list); |
|
spin_lock_init(&air_sched->lock); |
|
air_sched->aql_txq_limit_low = IEEE80211_DEFAULT_AQL_TXQ_LIMIT_L; |
|
air_sched->aql_txq_limit_high = |
|
IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H; |
|
} |
|
|
|
local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX; |
|
local->aql_threshold = IEEE80211_AQL_THRESHOLD; |
|
atomic_set(&local->aql_total_pending_airtime, 0); |
|
|
|
INIT_LIST_HEAD(&local->chanctx_list); |
|
mutex_init(&local->chanctx_mtx); |
|
|
|
INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
|
|
|
INIT_WORK(&local->restart_work, ieee80211_restart_work); |
|
|
|
INIT_WORK(&local->radar_detected_work, |
|
ieee80211_dfs_radar_detected_work); |
|
|
|
INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
|
local->smps_mode = IEEE80211_SMPS_OFF; |
|
|
|
INIT_WORK(&local->dynamic_ps_enable_work, |
|
ieee80211_dynamic_ps_enable_work); |
|
INIT_WORK(&local->dynamic_ps_disable_work, |
|
ieee80211_dynamic_ps_disable_work); |
|
timer_setup(&local->dynamic_ps_timer, ieee80211_dynamic_ps_timer, 0); |
|
|
|
INIT_WORK(&local->sched_scan_stopped_work, |
|
ieee80211_sched_scan_stopped_work); |
|
|
|
spin_lock_init(&local->ack_status_lock); |
|
idr_init(&local->ack_status_frames); |
|
|
|
for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
|
skb_queue_head_init(&local->pending[i]); |
|
atomic_set(&local->agg_queue_stop[i], 0); |
|
} |
|
tasklet_setup(&local->tx_pending_tasklet, ieee80211_tx_pending); |
|
|
|
if (ops->wake_tx_queue) |
|
tasklet_setup(&local->wake_txqs_tasklet, ieee80211_wake_txqs); |
|
|
|
tasklet_setup(&local->tasklet, ieee80211_tasklet_handler); |
|
|
|
skb_queue_head_init(&local->skb_queue); |
|
skb_queue_head_init(&local->skb_queue_unreliable); |
|
|
|
ieee80211_alloc_led_names(local); |
|
|
|
ieee80211_roc_setup(local); |
|
|
|
local->hw.radiotap_timestamp.units_pos = -1; |
|
local->hw.radiotap_timestamp.accuracy = -1; |
|
|
|
return &local->hw; |
|
err_free: |
|
wiphy_free(wiphy); |
|
return NULL; |
|
} |
|
EXPORT_SYMBOL(ieee80211_alloc_hw_nm); |
|
|
|
static int ieee80211_init_cipher_suites(struct ieee80211_local *local) |
|
{ |
|
bool have_wep = !fips_enabled; /* FIPS does not permit the use of RC4 */ |
|
bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE); |
|
int n_suites = 0, r = 0, w = 0; |
|
u32 *suites; |
|
static const u32 cipher_suites[] = { |
|
/* keep WEP first, it may be removed below */ |
|
WLAN_CIPHER_SUITE_WEP40, |
|
WLAN_CIPHER_SUITE_WEP104, |
|
WLAN_CIPHER_SUITE_TKIP, |
|
WLAN_CIPHER_SUITE_CCMP, |
|
WLAN_CIPHER_SUITE_CCMP_256, |
|
WLAN_CIPHER_SUITE_GCMP, |
|
WLAN_CIPHER_SUITE_GCMP_256, |
|
|
|
/* keep last -- depends on hw flags! */ |
|
WLAN_CIPHER_SUITE_AES_CMAC, |
|
WLAN_CIPHER_SUITE_BIP_CMAC_256, |
|
WLAN_CIPHER_SUITE_BIP_GMAC_128, |
|
WLAN_CIPHER_SUITE_BIP_GMAC_256, |
|
}; |
|
|
|
if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) || |
|
local->hw.wiphy->cipher_suites) { |
|
/* If the driver advertises, or doesn't support SW crypto, |
|
* we only need to remove WEP if necessary. |
|
*/ |
|
if (have_wep) |
|
return 0; |
|
|
|
/* well if it has _no_ ciphers ... fine */ |
|
if (!local->hw.wiphy->n_cipher_suites) |
|
return 0; |
|
|
|
/* Driver provides cipher suites, but we need to exclude WEP */ |
|
suites = kmemdup(local->hw.wiphy->cipher_suites, |
|
sizeof(u32) * local->hw.wiphy->n_cipher_suites, |
|
GFP_KERNEL); |
|
if (!suites) |
|
return -ENOMEM; |
|
|
|
for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { |
|
u32 suite = local->hw.wiphy->cipher_suites[r]; |
|
|
|
if (suite == WLAN_CIPHER_SUITE_WEP40 || |
|
suite == WLAN_CIPHER_SUITE_WEP104) |
|
continue; |
|
suites[w++] = suite; |
|
} |
|
} else if (!local->hw.cipher_schemes) { |
|
/* If the driver doesn't have cipher schemes, there's nothing |
|
* else to do other than assign the (software supported and |
|
* perhaps offloaded) cipher suites. |
|
*/ |
|
local->hw.wiphy->cipher_suites = cipher_suites; |
|
local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); |
|
|
|
if (!have_mfp) |
|
local->hw.wiphy->n_cipher_suites -= 4; |
|
|
|
if (!have_wep) { |
|
local->hw.wiphy->cipher_suites += 2; |
|
local->hw.wiphy->n_cipher_suites -= 2; |
|
} |
|
|
|
/* not dynamically allocated, so just return */ |
|
return 0; |
|
} else { |
|
const struct ieee80211_cipher_scheme *cs; |
|
|
|
cs = local->hw.cipher_schemes; |
|
|
|
/* Driver specifies cipher schemes only (but not cipher suites |
|
* including the schemes) |
|
* |
|
* We start counting ciphers defined by schemes, TKIP, CCMP, |
|
* CCMP-256, GCMP, and GCMP-256 |
|
*/ |
|
n_suites = local->hw.n_cipher_schemes + 5; |
|
|
|
/* check if we have WEP40 and WEP104 */ |
|
if (have_wep) |
|
n_suites += 2; |
|
|
|
/* check if we have AES_CMAC, BIP-CMAC-256, BIP-GMAC-128, |
|
* BIP-GMAC-256 |
|
*/ |
|
if (have_mfp) |
|
n_suites += 4; |
|
|
|
suites = kmalloc_array(n_suites, sizeof(u32), GFP_KERNEL); |
|
if (!suites) |
|
return -ENOMEM; |
|
|
|
suites[w++] = WLAN_CIPHER_SUITE_CCMP; |
|
suites[w++] = WLAN_CIPHER_SUITE_CCMP_256; |
|
suites[w++] = WLAN_CIPHER_SUITE_TKIP; |
|
suites[w++] = WLAN_CIPHER_SUITE_GCMP; |
|
suites[w++] = WLAN_CIPHER_SUITE_GCMP_256; |
|
|
|
if (have_wep) { |
|
suites[w++] = WLAN_CIPHER_SUITE_WEP40; |
|
suites[w++] = WLAN_CIPHER_SUITE_WEP104; |
|
} |
|
|
|
if (have_mfp) { |
|
suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC; |
|
suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256; |
|
suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_128; |
|
suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_256; |
|
} |
|
|
|
for (r = 0; r < local->hw.n_cipher_schemes; r++) { |
|
suites[w++] = cs[r].cipher; |
|
if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) { |
|
kfree(suites); |
|
return -EINVAL; |
|
} |
|
} |
|
} |
|
|
|
local->hw.wiphy->cipher_suites = suites; |
|
local->hw.wiphy->n_cipher_suites = w; |
|
local->wiphy_ciphers_allocated = true; |
|
|
|
return 0; |
|
} |
|
|
|
int ieee80211_register_hw(struct ieee80211_hw *hw) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
int result, i; |
|
enum nl80211_band band; |
|
int channels, max_bitrates; |
|
bool supp_ht, supp_vht, supp_he; |
|
struct cfg80211_chan_def dflt_chandef = {}; |
|
|
|
if (ieee80211_hw_check(hw, QUEUE_CONTROL) && |
|
(local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || |
|
local->hw.offchannel_tx_hw_queue >= local->hw.queues)) |
|
return -EINVAL; |
|
|
|
if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && |
|
(!local->ops->tdls_channel_switch || |
|
!local->ops->tdls_cancel_channel_switch || |
|
!local->ops->tdls_recv_channel_switch)) |
|
return -EOPNOTSUPP; |
|
|
|
if (WARN_ON(ieee80211_hw_check(hw, SUPPORTS_TX_FRAG) && |
|
!local->ops->set_frag_threshold)) |
|
return -EINVAL; |
|
|
|
if (WARN_ON(local->hw.wiphy->interface_modes & |
|
BIT(NL80211_IFTYPE_NAN) && |
|
(!local->ops->start_nan || !local->ops->stop_nan))) |
|
return -EINVAL; |
|
|
|
#ifdef CONFIG_PM |
|
if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume)) |
|
return -EINVAL; |
|
#endif |
|
|
|
if (!local->use_chanctx) { |
|
for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { |
|
const struct ieee80211_iface_combination *comb; |
|
|
|
comb = &local->hw.wiphy->iface_combinations[i]; |
|
|
|
if (comb->num_different_channels > 1) |
|
return -EINVAL; |
|
} |
|
} else { |
|
/* DFS is not supported with multi-channel combinations yet */ |
|
for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { |
|
const struct ieee80211_iface_combination *comb; |
|
|
|
comb = &local->hw.wiphy->iface_combinations[i]; |
|
|
|
if (comb->radar_detect_widths && |
|
comb->num_different_channels > 1) |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
/* Only HW csum features are currently compatible with mac80211 */ |
|
if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES)) |
|
return -EINVAL; |
|
|
|
if (hw->max_report_rates == 0) |
|
hw->max_report_rates = hw->max_rates; |
|
|
|
local->rx_chains = 1; |
|
|
|
/* |
|
* generic code guarantees at least one band, |
|
* set this very early because much code assumes |
|
* that hw.conf.channel is assigned |
|
*/ |
|
channels = 0; |
|
max_bitrates = 0; |
|
supp_ht = false; |
|
supp_vht = false; |
|
supp_he = false; |
|
for (band = 0; band < NUM_NL80211_BANDS; band++) { |
|
struct ieee80211_supported_band *sband; |
|
|
|
sband = local->hw.wiphy->bands[band]; |
|
if (!sband) |
|
continue; |
|
|
|
if (!dflt_chandef.chan) { |
|
/* |
|
* Assign the first enabled channel to dflt_chandef |
|
* from the list of channels |
|
*/ |
|
for (i = 0; i < sband->n_channels; i++) |
|
if (!(sband->channels[i].flags & |
|
IEEE80211_CHAN_DISABLED)) |
|
break; |
|
/* if none found then use the first anyway */ |
|
if (i == sband->n_channels) |
|
i = 0; |
|
cfg80211_chandef_create(&dflt_chandef, |
|
&sband->channels[i], |
|
NL80211_CHAN_NO_HT); |
|
/* init channel we're on */ |
|
if (!local->use_chanctx && !local->_oper_chandef.chan) { |
|
local->hw.conf.chandef = dflt_chandef; |
|
local->_oper_chandef = dflt_chandef; |
|
} |
|
local->monitor_chandef = dflt_chandef; |
|
} |
|
|
|
channels += sband->n_channels; |
|
|
|
if (max_bitrates < sband->n_bitrates) |
|
max_bitrates = sband->n_bitrates; |
|
supp_ht = supp_ht || sband->ht_cap.ht_supported; |
|
supp_vht = supp_vht || sband->vht_cap.vht_supported; |
|
|
|
for (i = 0; i < sband->n_iftype_data; i++) { |
|
const struct ieee80211_sband_iftype_data *iftd; |
|
|
|
iftd = &sband->iftype_data[i]; |
|
|
|
supp_he = supp_he || iftd->he_cap.has_he; |
|
} |
|
|
|
/* HT, VHT, HE require QoS, thus >= 4 queues */ |
|
if (WARN_ON(local->hw.queues < IEEE80211_NUM_ACS && |
|
(supp_ht || supp_vht || supp_he))) |
|
return -EINVAL; |
|
|
|
if (!sband->ht_cap.ht_supported) |
|
continue; |
|
|
|
/* TODO: consider VHT for RX chains, hopefully it's the same */ |
|
local->rx_chains = |
|
max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), |
|
local->rx_chains); |
|
|
|
/* no need to mask, SM_PS_DISABLED has all bits set */ |
|
sband->ht_cap.cap |= WLAN_HT_CAP_SM_PS_DISABLED << |
|
IEEE80211_HT_CAP_SM_PS_SHIFT; |
|
} |
|
|
|
/* if low-level driver supports AP, we also support VLAN. |
|
* drivers advertising SW_CRYPTO_CONTROL should enable AP_VLAN |
|
* based on their support to transmit SW encrypted packets. |
|
*/ |
|
if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP) && |
|
!ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL)) { |
|
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); |
|
hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); |
|
} |
|
|
|
/* mac80211 always supports monitor */ |
|
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
|
hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); |
|
|
|
/* mac80211 doesn't support more than one IBSS interface right now */ |
|
for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { |
|
const struct ieee80211_iface_combination *c; |
|
int j; |
|
|
|
c = &hw->wiphy->iface_combinations[i]; |
|
|
|
for (j = 0; j < c->n_limits; j++) |
|
if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && |
|
c->limits[j].max > 1) |
|
return -EINVAL; |
|
} |
|
|
|
local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
|
sizeof(void *) * channels, GFP_KERNEL); |
|
if (!local->int_scan_req) |
|
return -ENOMEM; |
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++) { |
|
if (!local->hw.wiphy->bands[band]) |
|
continue; |
|
local->int_scan_req->rates[band] = (u32) -1; |
|
} |
|
|
|
#ifndef CONFIG_MAC80211_MESH |
|
/* mesh depends on Kconfig, but drivers should set it if they want */ |
|
local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); |
|
#endif |
|
|
|
/* if the underlying driver supports mesh, mac80211 will (at least) |
|
* provide routing of mesh authentication frames to userspace */ |
|
if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) |
|
local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; |
|
|
|
/* mac80211 supports control port protocol changing */ |
|
local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; |
|
|
|
if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) { |
|
local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; |
|
} else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) { |
|
local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; |
|
if (hw->max_signal <= 0) { |
|
result = -EINVAL; |
|
goto fail_workqueue; |
|
} |
|
} |
|
|
|
/* Mac80211 and therefore all drivers using SW crypto only |
|
* are able to handle PTK rekeys and Extended Key ID. |
|
*/ |
|
if (!local->ops->set_key) { |
|
wiphy_ext_feature_set(local->hw.wiphy, |
|
NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); |
|
wiphy_ext_feature_set(local->hw.wiphy, |
|
NL80211_EXT_FEATURE_EXT_KEY_ID); |
|
} |
|
|
|
if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_ADHOC)) |
|
wiphy_ext_feature_set(local->hw.wiphy, |
|
NL80211_EXT_FEATURE_DEL_IBSS_STA); |
|
|
|
/* |
|
* Calculate scan IE length -- we need this to alloc |
|
* memory and to subtract from the driver limit. It |
|
* includes the DS Params, (extended) supported rates, and HT |
|
* information -- SSID is the driver's responsibility. |
|
*/ |
|
local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
|
3 /* DS Params */; |
|
if (supp_ht) |
|
local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); |
|
|
|
if (supp_vht) |
|
local->scan_ies_len += |
|
2 + sizeof(struct ieee80211_vht_cap); |
|
|
|
/* HE cap element is variable in size - set len to allow max size */ |
|
/* |
|
* TODO: 1 is added at the end of the calculation to accommodate for |
|
* the temporary placing of the HE capabilities IE under EXT. |
|
* Remove it once it is placed in the final place. |
|
*/ |
|
if (supp_he) |
|
local->scan_ies_len += |
|
2 + sizeof(struct ieee80211_he_cap_elem) + |
|
sizeof(struct ieee80211_he_mcs_nss_supp) + |
|
IEEE80211_HE_PPE_THRES_MAX_LEN + 1; |
|
|
|
if (!local->ops->hw_scan) { |
|
/* For hw_scan, driver needs to set these up. */ |
|
local->hw.wiphy->max_scan_ssids = 4; |
|
local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; |
|
} |
|
|
|
/* |
|
* If the driver supports any scan IEs, then assume the |
|
* limit includes the IEs mac80211 will add, otherwise |
|
* leave it at zero and let the driver sort it out; we |
|
* still pass our IEs to the driver but userspace will |
|
* not be allowed to in that case. |
|
*/ |
|
if (local->hw.wiphy->max_scan_ie_len) |
|
local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; |
|
|
|
if (WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes, |
|
local->hw.n_cipher_schemes))) { |
|
result = -EINVAL; |
|
goto fail_workqueue; |
|
} |
|
|
|
result = ieee80211_init_cipher_suites(local); |
|
if (result < 0) |
|
goto fail_workqueue; |
|
|
|
if (!local->ops->remain_on_channel) |
|
local->hw.wiphy->max_remain_on_channel_duration = 5000; |
|
|
|
/* mac80211 based drivers don't support internal TDLS setup */ |
|
if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) |
|
local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; |
|
|
|
/* mac80211 supports eCSA, if the driver supports STA CSA at all */ |
|
if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) |
|
local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING; |
|
|
|
/* mac80211 supports multi BSSID, if the driver supports it */ |
|
if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID)) { |
|
local->hw.wiphy->support_mbssid = true; |
|
if (ieee80211_hw_check(&local->hw, |
|
SUPPORTS_ONLY_HE_MULTI_BSSID)) |
|
local->hw.wiphy->support_only_he_mbssid = true; |
|
else |
|
local->ext_capa[2] |= |
|
WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; |
|
} |
|
|
|
local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CNTDWN_COUNTERS_NUM; |
|
|
|
/* |
|
* We use the number of queues for feature tests (QoS, HT) internally |
|
* so restrict them appropriately. |
|
*/ |
|
if (hw->queues > IEEE80211_MAX_QUEUES) |
|
hw->queues = IEEE80211_MAX_QUEUES; |
|
|
|
local->workqueue = |
|
alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy)); |
|
if (!local->workqueue) { |
|
result = -ENOMEM; |
|
goto fail_workqueue; |
|
} |
|
|
|
/* |
|
* The hardware needs headroom for sending the frame, |
|
* and we need some headroom for passing the frame to monitor |
|
* interfaces, but never both at the same time. |
|
*/ |
|
local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
|
IEEE80211_TX_STATUS_HEADROOM); |
|
|
|
/* |
|
* if the driver doesn't specify a max listen interval we |
|
* use 5 which should be a safe default |
|
*/ |
|
if (local->hw.max_listen_interval == 0) |
|
local->hw.max_listen_interval = 5; |
|
|
|
local->hw.conf.listen_interval = local->hw.max_listen_interval; |
|
|
|
local->dynamic_ps_forced_timeout = -1; |
|
|
|
if (!local->hw.max_nan_de_entries) |
|
local->hw.max_nan_de_entries = IEEE80211_MAX_NAN_INSTANCE_ID; |
|
|
|
if (!local->hw.weight_multiplier) |
|
local->hw.weight_multiplier = 1; |
|
|
|
ieee80211_wep_init(local); |
|
|
|
local->hw.conf.flags = IEEE80211_CONF_IDLE; |
|
|
|
ieee80211_led_init(local); |
|
|
|
result = ieee80211_txq_setup_flows(local); |
|
if (result) |
|
goto fail_flows; |
|
|
|
rtnl_lock(); |
|
result = ieee80211_init_rate_ctrl_alg(local, |
|
hw->rate_control_algorithm); |
|
rtnl_unlock(); |
|
if (result < 0) { |
|
wiphy_debug(local->hw.wiphy, |
|
"Failed to initialize rate control algorithm\n"); |
|
goto fail_rate; |
|
} |
|
|
|
if (local->rate_ctrl) { |
|
clear_bit(IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW, hw->flags); |
|
if (local->rate_ctrl->ops->capa & RATE_CTRL_CAPA_VHT_EXT_NSS_BW) |
|
ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); |
|
} |
|
|
|
/* |
|
* If the VHT capabilities don't have IEEE80211_VHT_EXT_NSS_BW_CAPABLE, |
|
* or have it when we don't, copy the sband structure and set/clear it. |
|
* This is necessary because rate scaling algorithms could be switched |
|
* and have different support values. |
|
* Print a message so that in the common case the reallocation can be |
|
* avoided. |
|
*/ |
|
BUILD_BUG_ON(NUM_NL80211_BANDS > 8 * sizeof(local->sband_allocated)); |
|
for (band = 0; band < NUM_NL80211_BANDS; band++) { |
|
struct ieee80211_supported_band *sband; |
|
bool local_cap, ie_cap; |
|
|
|
local_cap = ieee80211_hw_check(hw, SUPPORTS_VHT_EXT_NSS_BW); |
|
|
|
sband = local->hw.wiphy->bands[band]; |
|
if (!sband || !sband->vht_cap.vht_supported) |
|
continue; |
|
|
|
ie_cap = !!(sband->vht_cap.vht_mcs.tx_highest & |
|
cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE)); |
|
|
|
if (local_cap == ie_cap) |
|
continue; |
|
|
|
sband = kmemdup(sband, sizeof(*sband), GFP_KERNEL); |
|
if (!sband) { |
|
result = -ENOMEM; |
|
goto fail_rate; |
|
} |
|
|
|
wiphy_dbg(hw->wiphy, "copying sband (band %d) due to VHT EXT NSS BW flag\n", |
|
band); |
|
|
|
sband->vht_cap.vht_mcs.tx_highest ^= |
|
cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE); |
|
|
|
local->hw.wiphy->bands[band] = sband; |
|
local->sband_allocated |= BIT(band); |
|
} |
|
|
|
result = wiphy_register(local->hw.wiphy); |
|
if (result < 0) |
|
goto fail_wiphy_register; |
|
|
|
debugfs_hw_add(local); |
|
rate_control_add_debugfs(local); |
|
|
|
rtnl_lock(); |
|
wiphy_lock(hw->wiphy); |
|
|
|
/* add one default STA interface if supported */ |
|
if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) && |
|
!ieee80211_hw_check(hw, NO_AUTO_VIF)) { |
|
struct vif_params params = {0}; |
|
|
|
result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL, |
|
NL80211_IFTYPE_STATION, ¶ms); |
|
if (result) |
|
wiphy_warn(local->hw.wiphy, |
|
"Failed to add default virtual iface\n"); |
|
} |
|
|
|
wiphy_unlock(hw->wiphy); |
|
rtnl_unlock(); |
|
|
|
#ifdef CONFIG_INET |
|
local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
|
result = register_inetaddr_notifier(&local->ifa_notifier); |
|
if (result) |
|
goto fail_ifa; |
|
#endif |
|
|
|
#if IS_ENABLED(CONFIG_IPV6) |
|
local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; |
|
result = register_inet6addr_notifier(&local->ifa6_notifier); |
|
if (result) |
|
goto fail_ifa6; |
|
#endif |
|
|
|
return 0; |
|
|
|
#if IS_ENABLED(CONFIG_IPV6) |
|
fail_ifa6: |
|
#ifdef CONFIG_INET |
|
unregister_inetaddr_notifier(&local->ifa_notifier); |
|
#endif |
|
#endif |
|
#if defined(CONFIG_INET) || defined(CONFIG_IPV6) |
|
fail_ifa: |
|
#endif |
|
wiphy_unregister(local->hw.wiphy); |
|
fail_wiphy_register: |
|
rtnl_lock(); |
|
rate_control_deinitialize(local); |
|
ieee80211_remove_interfaces(local); |
|
rtnl_unlock(); |
|
fail_rate: |
|
fail_flows: |
|
ieee80211_led_exit(local); |
|
destroy_workqueue(local->workqueue); |
|
fail_workqueue: |
|
if (local->wiphy_ciphers_allocated) |
|
kfree(local->hw.wiphy->cipher_suites); |
|
kfree(local->int_scan_req); |
|
return result; |
|
} |
|
EXPORT_SYMBOL(ieee80211_register_hw); |
|
|
|
void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
|
|
tasklet_kill(&local->tx_pending_tasklet); |
|
tasklet_kill(&local->tasklet); |
|
|
|
#ifdef CONFIG_INET |
|
unregister_inetaddr_notifier(&local->ifa_notifier); |
|
#endif |
|
#if IS_ENABLED(CONFIG_IPV6) |
|
unregister_inet6addr_notifier(&local->ifa6_notifier); |
|
#endif |
|
|
|
rtnl_lock(); |
|
|
|
/* |
|
* At this point, interface list manipulations are fine |
|
* because the driver cannot be handing us frames any |
|
* more and the tasklet is killed. |
|
*/ |
|
ieee80211_remove_interfaces(local); |
|
|
|
rtnl_unlock(); |
|
|
|
cancel_delayed_work_sync(&local->roc_work); |
|
cancel_work_sync(&local->restart_work); |
|
cancel_work_sync(&local->reconfig_filter); |
|
flush_work(&local->sched_scan_stopped_work); |
|
flush_work(&local->radar_detected_work); |
|
|
|
ieee80211_clear_tx_pending(local); |
|
rate_control_deinitialize(local); |
|
|
|
if (skb_queue_len(&local->skb_queue) || |
|
skb_queue_len(&local->skb_queue_unreliable)) |
|
wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
|
skb_queue_purge(&local->skb_queue); |
|
skb_queue_purge(&local->skb_queue_unreliable); |
|
|
|
wiphy_unregister(local->hw.wiphy); |
|
destroy_workqueue(local->workqueue); |
|
ieee80211_led_exit(local); |
|
kfree(local->int_scan_req); |
|
} |
|
EXPORT_SYMBOL(ieee80211_unregister_hw); |
|
|
|
static int ieee80211_free_ack_frame(int id, void *p, void *data) |
|
{ |
|
WARN_ONCE(1, "Have pending ack frames!\n"); |
|
kfree_skb(p); |
|
return 0; |
|
} |
|
|
|
void ieee80211_free_hw(struct ieee80211_hw *hw) |
|
{ |
|
struct ieee80211_local *local = hw_to_local(hw); |
|
enum nl80211_band band; |
|
|
|
mutex_destroy(&local->iflist_mtx); |
|
mutex_destroy(&local->mtx); |
|
|
|
if (local->wiphy_ciphers_allocated) |
|
kfree(local->hw.wiphy->cipher_suites); |
|
|
|
idr_for_each(&local->ack_status_frames, |
|
ieee80211_free_ack_frame, NULL); |
|
idr_destroy(&local->ack_status_frames); |
|
|
|
sta_info_stop(local); |
|
|
|
ieee80211_free_led_names(local); |
|
|
|
for (band = 0; band < NUM_NL80211_BANDS; band++) { |
|
if (!(local->sband_allocated & BIT(band))) |
|
continue; |
|
kfree(local->hw.wiphy->bands[band]); |
|
} |
|
|
|
wiphy_free(local->hw.wiphy); |
|
} |
|
EXPORT_SYMBOL(ieee80211_free_hw); |
|
|
|
static int __init ieee80211_init(void) |
|
{ |
|
struct sk_buff *skb; |
|
int ret; |
|
|
|
BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
|
BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + |
|
IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
|
|
|
ret = rc80211_minstrel_init(); |
|
if (ret) |
|
return ret; |
|
|
|
ret = ieee80211_iface_init(); |
|
if (ret) |
|
goto err_netdev; |
|
|
|
return 0; |
|
err_netdev: |
|
rc80211_minstrel_exit(); |
|
|
|
return ret; |
|
} |
|
|
|
static void __exit ieee80211_exit(void) |
|
{ |
|
rc80211_minstrel_exit(); |
|
|
|
ieee80211s_stop(); |
|
|
|
ieee80211_iface_exit(); |
|
|
|
rcu_barrier(); |
|
} |
|
|
|
|
|
subsys_initcall(ieee80211_init); |
|
module_exit(ieee80211_exit); |
|
|
|
MODULE_DESCRIPTION("IEEE 802.11 subsystem"); |
|
MODULE_LICENSE("GPL");
|
|
|