mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 08:58:07 +00:00
276e189f8e
Ilan's change to move locking around accidentally lost the
wiphy_lock() during some porting, add it back.
Fixes: 45daaa1318
("mac80211: Properly WARN on HW scan before restart")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20210817121210.47bdb177064f.Ib1ef79440cd27f318c028ddfc0c642406917f512@changeid
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1493 lines
42 KiB
C
1493 lines
42 KiB
C
// 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 <jbenc@suse.cz>
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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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#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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#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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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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if (atomic_read(&local->iff_allmultis))
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new_flags |= FIF_ALLMULTI;
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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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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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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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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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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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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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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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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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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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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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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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/* 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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/* 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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* 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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drv_ipv6_addr_change(local, sdata, idev);
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return NOTIFY_OK;
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}
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#endif
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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) |
|
|
BIT(IEEE80211_STYPE_DEAUTH >> 4) |
|
|
BIT(IEEE80211_STYPE_ACTION >> 4),
|
|
},
|
|
[NL80211_IFTYPE_P2P_CLIENT] = {
|
|
.tx = 0xffff,
|
|
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
|
|
BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
|
|
},
|
|
[NL80211_IFTYPE_P2P_GO] = {
|
|
.tx = 0xffff,
|
|
.rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) |
|
|
BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) |
|
|
BIT(IEEE80211_STYPE_PROBE_REQ >> 4) |
|
|
BIT(IEEE80211_STYPE_DISASSOC >> 4) |
|
|
BIT(IEEE80211_STYPE_AUTH >> 4) |
|
|
BIT(IEEE80211_STYPE_DEAUTH >> 4) |
|
|
BIT(IEEE80211_STYPE_ACTION >> 4),
|
|
},
|
|
[NL80211_IFTYPE_MESH_POINT] = {
|
|
.tx = 0xffff,
|
|
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
|
|
BIT(IEEE80211_STYPE_AUTH >> 4) |
|
|
BIT(IEEE80211_STYPE_DEAUTH >> 4),
|
|
},
|
|
[NL80211_IFTYPE_P2P_DEVICE] = {
|
|
.tx = 0xffff,
|
|
.rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
|
|
BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
|
|
},
|
|
};
|
|
|
|
static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = {
|
|
.ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR |
|
|
IEEE80211_HT_AMPDU_PARM_DENSITY,
|
|
|
|
.cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
|
|
IEEE80211_HT_CAP_MAX_AMSDU |
|
|
IEEE80211_HT_CAP_SGI_20 |
|
|
IEEE80211_HT_CAP_SGI_40 |
|
|
IEEE80211_HT_CAP_TX_STBC |
|
|
IEEE80211_HT_CAP_RX_STBC |
|
|
IEEE80211_HT_CAP_LDPC_CODING |
|
|
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 && 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");
|