Release 4.11 net/mac80211/main.c

/*
 * 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
 *
 * 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);
}

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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);
}

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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;
}

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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;
}

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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);
}

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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;
}

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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;
		}
	}
}

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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__);

	rtnl_lock();
	list_for_each_entry(sdata, &local->interfaces, list)
		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);

	ieee80211_reconfig(local);
	rtnl_unlock();
}

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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);
}
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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;
}
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#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;
}
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#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_1 |
			    IEEE80211_VHT_CAP_RXSTBC_2 |
			    IEEE80211_VHT_CAP_RXSTBC_3 |
			    IEEE80211_VHT_CAP_RXSTBC_4 |
			    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);

	if (!ops->hw_scan)
		wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN |
				   NL80211_FEATURE_AP_SCAN;


	if (!ops->set_key)
		wiphy->flags |= WIPHY_FLAG_IBSS_RSN;

	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;
	local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
	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);

	__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);
	setup_timer(&local->dynamic_ps_timer,
		    ieee80211_dynamic_ps_timer, (unsigned long) local);

	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;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Johannes Berg
429
49.25%
45
62.50%
Jiri Benc
179
20.55%
1
1.39%
Luciano Coelho
54
6.20%
3
4.17%
Kalle Valo
43
4.94%
2
2.78%
Ben Greear
18
2.07%
3
4.17%
Arik Nemtsov
18
2.07%
1
1.39%
Helmut Schaa
16
1.84%
2
2.78%
Alexander Bondar
16
1.84%
1
1.39%
Jouni Malinen
15
1.72%
3
4.17%
Eric Dumazet
14
1.61%
1
1.39%
Sam Leffler
13
1.49%
1
1.39%
Christian Lamparter
13
1.49%
2
2.78%
Michal Kazior
12
1.38%
1
1.39%
Simon Wunderlich
10
1.15%
1
1.39%
Hideaki Yoshifuji / 吉藤英明
8
0.92%
1
1.39%
Emmanuel Grumbach
7
0.80%
1
1.39%
Alexander Simon
2
0.23%
1
1.39%
Thomas Pedersen
2
0.23%
1
1.39%
Antonio Quartulli
2
0.23%
1
1.39%
Total
871
100.00%
72
100.00%


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,