v4.19.13 snapshot.
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
new file mode 100644
index 0000000..5136278
--- /dev/null
+++ b/net/mac80211/main.c
@@ -0,0 +1,1341 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
+ * Copyright (C) 2017 Intel Deutschland GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <net/mac80211.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/rtnetlink.h>
+#include <linux/bitmap.h>
+#include <linux/inetdevice.h>
+#include <net/net_namespace.h>
+#include <net/cfg80211.h>
+#include <net/addrconf.h>
+
+#include "ieee80211_i.h"
+#include "driver-ops.h"
+#include "rate.h"
+#include "mesh.h"
+#include "wep.h"
+#include "led.h"
+#include "debugfs.h"
+
+void ieee80211_configure_filter(struct ieee80211_local *local)
+{
+ u64 mc;
+ unsigned int changed_flags;
+ unsigned int new_flags = 0;
+
+ if (atomic_read(&local->iff_allmultis))
+ new_flags |= FIF_ALLMULTI;
+
+ if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) ||
+ test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning))
+ new_flags |= FIF_BCN_PRBRESP_PROMISC;
+
+ if (local->fif_probe_req || local->probe_req_reg)
+ new_flags |= FIF_PROBE_REQ;
+
+ if (local->fif_fcsfail)
+ new_flags |= FIF_FCSFAIL;
+
+ if (local->fif_plcpfail)
+ new_flags |= FIF_PLCPFAIL;
+
+ if (local->fif_control)
+ new_flags |= FIF_CONTROL;
+
+ if (local->fif_other_bss)
+ new_flags |= FIF_OTHER_BSS;
+
+ if (local->fif_pspoll)
+ new_flags |= FIF_PSPOLL;
+
+ spin_lock_bh(&local->filter_lock);
+ changed_flags = local->filter_flags ^ new_flags;
+
+ mc = drv_prepare_multicast(local, &local->mc_list);
+ spin_unlock_bh(&local->filter_lock);
+
+ /* be a bit nasty */
+ new_flags |= (1<<31);
+
+ drv_configure_filter(local, changed_flags, &new_flags, mc);
+
+ WARN_ON(new_flags & (1<<31));
+
+ local->filter_flags = new_flags & ~(1<<31);
+}
+
+static void ieee80211_reconfig_filter(struct work_struct *work)
+{
+ struct ieee80211_local *local =
+ container_of(work, struct ieee80211_local, reconfig_filter);
+
+ ieee80211_configure_filter(local);
+}
+
+static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct cfg80211_chan_def chandef = {};
+ u32 changed = 0;
+ int power;
+ u32 offchannel_flag;
+
+ offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
+
+ if (local->scan_chandef.chan) {
+ chandef = local->scan_chandef;
+ } else if (local->tmp_channel) {
+ chandef.chan = local->tmp_channel;
+ chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
+ chandef.center_freq1 = chandef.chan->center_freq;
+ } else
+ chandef = local->_oper_chandef;
+
+ WARN(!cfg80211_chandef_valid(&chandef),
+ "control:%d MHz width:%d center: %d/%d MHz",
+ chandef.chan->center_freq, chandef.width,
+ chandef.center_freq1, chandef.center_freq2);
+
+ if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef))
+ local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
+ else
+ local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
+
+ offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL;
+
+ if (offchannel_flag ||
+ !cfg80211_chandef_identical(&local->hw.conf.chandef,
+ &local->_oper_chandef)) {
+ local->hw.conf.chandef = chandef;
+ changed |= IEEE80211_CONF_CHANGE_CHANNEL;
+ }
+
+ if (!conf_is_ht(&local->hw.conf)) {
+ /*
+ * mac80211.h documents that this is only valid
+ * when the channel is set to an HT type, and
+ * that otherwise STATIC is used.
+ */
+ local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC;
+ } else if (local->hw.conf.smps_mode != local->smps_mode) {
+ local->hw.conf.smps_mode = local->smps_mode;
+ changed |= IEEE80211_CONF_CHANGE_SMPS;
+ }
+
+ power = ieee80211_chandef_max_power(&chandef);
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (!rcu_access_pointer(sdata->vif.chanctx_conf))
+ continue;
+ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ continue;
+ power = min(power, sdata->vif.bss_conf.txpower);
+ }
+ rcu_read_unlock();
+
+ if (local->hw.conf.power_level != power) {
+ changed |= IEEE80211_CONF_CHANGE_POWER;
+ local->hw.conf.power_level = power;
+ }
+
+ return changed;
+}
+
+int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
+{
+ int ret = 0;
+
+ might_sleep();
+
+ if (!local->use_chanctx)
+ changed |= ieee80211_hw_conf_chan(local);
+ else
+ changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
+ IEEE80211_CONF_CHANGE_POWER);
+
+ if (changed && local->open_count) {
+ ret = drv_config(local, changed);
+ /*
+ * Goal:
+ * HW reconfiguration should never fail, the driver has told
+ * us what it can support so it should live up to that promise.
+ *
+ * Current status:
+ * rfkill is not integrated with mac80211 and a
+ * configuration command can thus fail if hardware rfkill
+ * is enabled
+ *
+ * FIXME: integrate rfkill with mac80211 and then add this
+ * WARN_ON() back
+ *
+ */
+ /* WARN_ON(ret); */
+ }
+
+ return ret;
+}
+
+void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
+ u32 changed)
+{
+ struct ieee80211_local *local = sdata->local;
+
+ if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ return;
+
+ drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
+}
+
+u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
+{
+ sdata->vif.bss_conf.use_cts_prot = false;
+ sdata->vif.bss_conf.use_short_preamble = false;
+ sdata->vif.bss_conf.use_short_slot = false;
+ return BSS_CHANGED_ERP_CTS_PROT |
+ BSS_CHANGED_ERP_PREAMBLE |
+ BSS_CHANGED_ERP_SLOT;
+}
+
+static void ieee80211_tasklet_handler(unsigned long data)
+{
+ struct ieee80211_local *local = (struct ieee80211_local *) data;
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(&local->skb_queue)) ||
+ (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+ switch (skb->pkt_type) {
+ case IEEE80211_RX_MSG:
+ /* Clear skb->pkt_type in order to not confuse kernel
+ * netstack. */
+ skb->pkt_type = 0;
+ ieee80211_rx(&local->hw, skb);
+ break;
+ case IEEE80211_TX_STATUS_MSG:
+ skb->pkt_type = 0;
+ ieee80211_tx_status(&local->hw, skb);
+ break;
+ default:
+ WARN(1, "mac80211: Packet is of unknown type %d\n",
+ skb->pkt_type);
+ dev_kfree_skb(skb);
+ break;
+ }
+ }
+}
+
+static void ieee80211_restart_work(struct work_struct *work)
+{
+ struct ieee80211_local *local =
+ container_of(work, struct ieee80211_local, restart_work);
+ struct ieee80211_sub_if_data *sdata;
+
+ /* wait for scan work complete */
+ flush_workqueue(local->workqueue);
+ flush_work(&local->sched_scan_stopped_work);
+
+ WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
+ "%s called with hardware scan in progress\n", __func__);
+
+ flush_work(&local->radar_detected_work);
+ rtnl_lock();
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ /*
+ * XXX: there may be more work for other vif types and even
+ * for station mode: a good thing would be to run most of
+ * the iface type's dependent _stop (ieee80211_mg_stop,
+ * ieee80211_ibss_stop) etc...
+ * For now, fix only the specific bug that was seen: race
+ * between csa_connection_drop_work and us.
+ */
+ if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+ /*
+ * This worker is scheduled from the iface worker that
+ * runs on mac80211's workqueue, so we can't be
+ * scheduling this worker after the cancel right here.
+ * The exception is ieee80211_chswitch_done.
+ * Then we can have a race...
+ */
+ cancel_work_sync(&sdata->u.mgd.csa_connection_drop_work);
+ }
+ flush_delayed_work(&sdata->dec_tailroom_needed_wk);
+ }
+ ieee80211_scan_cancel(local);
+
+ /* make sure any new ROC will consider local->in_reconfig */
+ flush_delayed_work(&local->roc_work);
+ flush_work(&local->hw_roc_done);
+
+ /* wait for all packet processing to be done */
+ synchronize_net();
+
+ ieee80211_reconfig(local);
+ rtnl_unlock();
+}
+
+void ieee80211_restart_hw(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ trace_api_restart_hw(local);
+
+ wiphy_info(hw->wiphy,
+ "Hardware restart was requested\n");
+
+ /* use this reason, ieee80211_reconfig will unblock it */
+ ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP,
+ IEEE80211_QUEUE_STOP_REASON_SUSPEND,
+ false);
+
+ /*
+ * Stop all Rx during the reconfig. We don't want state changes
+ * or driver callbacks while this is in progress.
+ */
+ local->in_reconfig = true;
+ barrier();
+
+ queue_work(system_freezable_wq, &local->restart_work);
+}
+EXPORT_SYMBOL(ieee80211_restart_hw);
+
+#ifdef CONFIG_INET
+static int ieee80211_ifa_changed(struct notifier_block *nb,
+ unsigned long data, void *arg)
+{
+ struct in_ifaddr *ifa = arg;
+ struct ieee80211_local *local =
+ container_of(nb, struct ieee80211_local,
+ ifa_notifier);
+ struct net_device *ndev = ifa->ifa_dev->dev;
+ struct wireless_dev *wdev = ndev->ieee80211_ptr;
+ struct in_device *idev;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_bss_conf *bss_conf;
+ struct ieee80211_if_managed *ifmgd;
+ int c = 0;
+
+ /* Make sure it's our interface that got changed */
+ if (!wdev)
+ return NOTIFY_DONE;
+
+ if (wdev->wiphy != local->hw.wiphy)
+ return NOTIFY_DONE;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+ bss_conf = &sdata->vif.bss_conf;
+
+ /* ARP filtering is only supported in managed mode */
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
+ return NOTIFY_DONE;
+
+ idev = __in_dev_get_rtnl(sdata->dev);
+ if (!idev)
+ return NOTIFY_DONE;
+
+ ifmgd = &sdata->u.mgd;
+ sdata_lock(sdata);
+
+ /* Copy the addresses to the bss_conf list */
+ ifa = idev->ifa_list;
+ while (ifa) {
+ if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN)
+ bss_conf->arp_addr_list[c] = ifa->ifa_address;
+ ifa = ifa->ifa_next;
+ c++;
+ }
+
+ bss_conf->arp_addr_cnt = c;
+
+ /* Configure driver only if associated (which also implies it is up) */
+ if (ifmgd->associated)
+ ieee80211_bss_info_change_notify(sdata,
+ BSS_CHANGED_ARP_FILTER);
+
+ sdata_unlock(sdata);
+
+ return NOTIFY_OK;
+}
+#endif
+
+#if IS_ENABLED(CONFIG_IPV6)
+static int ieee80211_ifa6_changed(struct notifier_block *nb,
+ unsigned long data, void *arg)
+{
+ struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg;
+ struct inet6_dev *idev = ifa->idev;
+ struct net_device *ndev = ifa->idev->dev;
+ struct ieee80211_local *local =
+ container_of(nb, struct ieee80211_local, ifa6_notifier);
+ struct wireless_dev *wdev = ndev->ieee80211_ptr;
+ struct ieee80211_sub_if_data *sdata;
+
+ /* Make sure it's our interface that got changed */
+ if (!wdev || wdev->wiphy != local->hw.wiphy)
+ return NOTIFY_DONE;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+
+ /*
+ * For now only support station mode. This is mostly because
+ * doing AP would have to handle AP_VLAN in some way ...
+ */
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
+ return NOTIFY_DONE;
+
+ drv_ipv6_addr_change(local, sdata, idev);
+
+ return NOTIFY_OK;
+}
+#endif
+
+/* There isn't a lot of sense in it, but you can transmit anything you like */
+static const struct ieee80211_txrx_stypes
+ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = {
+ [NL80211_IFTYPE_ADHOC] = {
+ .tx = 0xffff,
+ .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
+ BIT(IEEE80211_STYPE_AUTH >> 4) |
+ BIT(IEEE80211_STYPE_DEAUTH >> 4) |
+ BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
+ },
+ [NL80211_IFTYPE_STATION] = {
+ .tx = 0xffff,
+ .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
+ BIT(IEEE80211_STYPE_PROBE_REQ >> 4),
+ },
+ [NL80211_IFTYPE_AP] = {
+ .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_AP_VLAN] = {
+ /* copy AP */
+ .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_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_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 (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);
+
+ 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;
+
+ /* 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->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);
+
+ 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);
+
+ INIT_WORK(&local->tdls_chsw_work, ieee80211_tdls_chsw_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_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
+ (unsigned long)local);
+
+ tasklet_init(&local->tasklet,
+ ieee80211_tasklet_handler,
+ (unsigned long) local);
+
+ skb_queue_head_init(&local->skb_queue);
+ skb_queue_head_init(&local->skb_queue_unreliable);
+ skb_queue_head_init(&local->skb_queue_tdls_chsw);
+
+ 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 = !(IS_ERR(local->wep_tx_tfm) ||
+ IS_ERR(local->wep_rx_tfm));
+ 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;
+ netdev_features_t feature_whitelist;
+ 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 {
+ /*
+ * WDS is currently prohibited when channel contexts are used
+ * because there's no clear definition of which channel WDS
+ * type interfaces use
+ */
+ if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS))
+ return -EINVAL;
+
+ /* 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 */
+ feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+ NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA |
+ NETIF_F_GSO_SOFTWARE | NETIF_F_RXCSUM;
+ if (WARN_ON(hw->netdev_features & ~feature_whitelist))
+ 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) {
+ cfg80211_chandef_create(&dflt_chandef,
+ &sband->channels[0],
+ 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;
+
+ if (!supp_he)
+ supp_he = !!ieee80211_get_he_sta_cap(sband);
+
+ 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_wiphy_register;
+ }
+ }
+
+ /*
+ * 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;
+
+ WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes,
+ local->hw.n_cipher_schemes));
+
+ result = ieee80211_init_cipher_suites(local);
+ if (result < 0)
+ goto fail_wiphy_register;
+
+ 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;
+
+ local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
+
+ result = wiphy_register(local->hw.wiphy);
+ if (result < 0)
+ goto fail_wiphy_register;
+
+ /*
+ * 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);
+
+ debugfs_hw_add(local);
+
+ /*
+ * 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;
+
+ result = ieee80211_wep_init(local);
+ if (result < 0)
+ wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n",
+ result);
+
+ 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);
+ if (result < 0) {
+ wiphy_debug(local->hw.wiphy,
+ "Failed to initialize rate control algorithm\n");
+ goto fail_rate;
+ }
+
+ /* add one default STA interface if supported */
+ if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
+ !ieee80211_hw_check(hw, NO_AUTO_VIF)) {
+ result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL,
+ NL80211_IFTYPE_STATION, NULL);
+ if (result)
+ wiphy_warn(local->hw.wiphy,
+ "Failed to add default virtual iface\n");
+ }
+
+ 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
+ rtnl_lock();
+ rate_control_deinitialize(local);
+ ieee80211_remove_interfaces(local);
+ fail_rate:
+ rtnl_unlock();
+ ieee80211_led_exit(local);
+ ieee80211_wep_free(local);
+ ieee80211_txq_teardown_flows(local);
+ fail_flows:
+ destroy_workqueue(local->workqueue);
+ fail_workqueue:
+ wiphy_unregister(local->hw.wiphy);
+ fail_wiphy_register:
+ 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
+ ieee80211_txq_teardown_flows(local);
+
+ 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);
+ cancel_work_sync(&local->tdls_chsw_work);
+ 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);
+ skb_queue_purge(&local->skb_queue_tdls_chsw);
+
+ destroy_workqueue(local->workqueue);
+ wiphy_unregister(local->hw.wiphy);
+ ieee80211_wep_free(local);
+ 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);
+
+ 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);
+
+ 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 = rc80211_minstrel_ht_init();
+ if (ret)
+ goto err_minstrel;
+
+ ret = ieee80211_iface_init();
+ if (ret)
+ goto err_netdev;
+
+ return 0;
+ err_netdev:
+ rc80211_minstrel_ht_exit();
+ err_minstrel:
+ rc80211_minstrel_exit();
+
+ return ret;
+}
+
+static void __exit ieee80211_exit(void)
+{
+ rc80211_minstrel_ht_exit();
+ 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");