drivers/net/wireless/mac80211_hwsim.c - kernel/common - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
  * Copyright (c) 2008, Jouni Malinen <[email protected]>
  * Copyright (c) 2011, Javier Lopez <[email protected]>
  * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
  * Copyright (C) 2018 - 2023 Intel Corporation
  */

 /*
  * TODO:
  * - Add TSF sync and fix IBSS beacon transmission by adding
  *   competition for "air time" at TBTT
  * - RX filtering based on filter configuration (data->rx_filter)
  */

 #include <linux/list.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <net/dst.h>
 #include <net/xfrm.h>
 #include <net/mac80211.h>
 #include <net/ieee80211_radiotap.h>
 #include <linux/if_arp.h>
 #include <linux/rtnetlink.h>
 #include <linux/etherdevice.h>
 #include <linux/platform_device.h>
 #include <linux/debugfs.h>
 #include <linux/module.h>
 #include <linux/ktime.h>
 #include <net/genetlink.h>
 #include <net/net_namespace.h>
 #include <net/netns/generic.h>
 #include <linux/rhashtable.h>
 #include <linux/nospec.h>
 #include <linux/virtio.h>
 #include <linux/virtio_ids.h>
 #include <linux/virtio_config.h>
 #include "mac80211_hwsim.h"

 #define WARN_QUEUE 100
 #define MAX_QUEUE 200

 MODULE_AUTHOR("Jouni Malinen");
 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
 MODULE_LICENSE("GPL");

 static int radios = 2;
 module_param(radios, int, 0444);
 MODULE_PARM_DESC(radios, "Number of simulated radios");

 static int channels = 1;
 module_param(channels, int, 0444);
 MODULE_PARM_DESC(channels, "Number of concurrent channels");

 static bool paged_rx = false;
 module_param(paged_rx, bool, 0644);
 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");

 static bool rctbl = false;
 module_param(rctbl, bool, 0444);
 MODULE_PARM_DESC(rctbl, "Handle rate control table");

 static bool support_p2p_device = true;
 module_param(support_p2p_device, bool, 0444);
 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");

 static bool mlo;
 module_param(mlo, bool, 0444);
 MODULE_PARM_DESC(mlo, "Support MLO");

 /**
  * enum hwsim_regtest - the type of regulatory tests we offer
  *
  * These are the different values you can use for the regtest
  * module parameter. This is useful to help test world roaming
  * and the driver regulatory_hint() call and combinations of these.
  * If you want to do specific alpha2 regulatory domain tests simply
  * use the userspace regulatory request as that will be respected as
  * well without the need of this module parameter. This is designed
  * only for testing the driver regulatory request, world roaming
  * and all possible combinations.
  *
  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  * 	this is the default value.
  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  *	hint, only one driver regulatory hint will be sent as such the
  * 	secondary radios are expected to follow.
  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  * 	request with all radios reporting the same regulatory domain.
  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  * 	different regulatory domains requests. Expected behaviour is for
  * 	an intersection to occur but each device will still use their
  * 	respective regulatory requested domains. Subsequent radios will
  * 	use the resulting intersection.
  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  *	this by using a custom beacon-capable regulatory domain for the first
  *	radio. All other device world roam.
  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  * 	domain requests. All radios will adhere to this custom world regulatory
  * 	domain.
  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  * 	domain requests. The first radio will adhere to the first custom world
  * 	regulatory domain, the second one to the second custom world regulatory
  * 	domain. All other devices will world roam.
  * @HWSIM_REGTEST_STRICT_FOLLOW: Used for testing strict regulatory domain
  *	settings, only the first radio will send a regulatory domain request
  *	and use strict settings. The rest of the radios are expected to follow.
  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  *	settings. All radios will adhere to this.
  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  *	domain settings, combined with secondary driver regulatory domain
  *	settings. The first radio will get a strict regulatory domain setting
  *	using the first driver regulatory request and the second radio will use
  *	non-strict settings using the second driver regulatory request. All
  *	other devices should follow the intersection created between the
  *	first two.
  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  * 	at least 6 radios for a complete test. We will test in this order:
  * 	1 - driver custom world regulatory domain
  * 	2 - second custom world regulatory domain
  * 	3 - first driver regulatory domain request
  * 	4 - second driver regulatory domain request
  * 	5 - strict regulatory domain settings using the third driver regulatory
  * 	    domain request
  * 	6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
  * 	           regulatory requests.
  */
 enum hwsim_regtest {
 	HWSIM_REGTEST_DISABLED = 0,
 	HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 	HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 	HWSIM_REGTEST_DIFF_COUNTRY = 3,
 	HWSIM_REGTEST_WORLD_ROAM = 4,
 	HWSIM_REGTEST_CUSTOM_WORLD = 5,
 	HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 	HWSIM_REGTEST_STRICT_FOLLOW = 7,
 	HWSIM_REGTEST_STRICT_ALL = 8,
 	HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 	HWSIM_REGTEST_ALL = 10,
 };

 /* Set to one of the HWSIM_REGTEST_* values above */
 static int regtest = HWSIM_REGTEST_DISABLED;
 module_param(regtest, int, 0444);
 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");

 static const char *hwsim_alpha2s[] = {
 	"FI",
 	"AL",
 	"US",
 	"DE",
 	"JP",
 	"AL",
 };

 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 	.n_reg_rules = 5,
 	.alpha2 =  "99",
 	.reg_rules = {
 		REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 		REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 		REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 		REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 		REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
 	}
 };

 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 	.n_reg_rules = 3,
 	.alpha2 =  "99",
 	.reg_rules = {
 		REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 		REG_RULE(5725-10, 5850+10, 40, 0, 30,
 			 NL80211_RRF_NO_IR),
 		REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
 	}
 };

 static const struct ieee80211_regdomain hwsim_world_regdom_custom_03 = {
 	.n_reg_rules = 6,
 	.alpha2 =  "99",
 	.reg_rules = {
 		REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0),
 		REG_RULE(2484 - 10, 2484 + 10, 40, 0, 20, 0),
 		REG_RULE(5150 - 10, 5240 + 10, 40, 0, 30, 0),
 		REG_RULE(5745 - 10, 5825 + 10, 40, 0, 30, 0),
 		REG_RULE(5855 - 10, 5925 + 10, 40, 0, 33, 0),
 		REG_RULE(5955 - 10, 7125 + 10, 320, 0, 33, 0),
 	}
 };

 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 	&hwsim_world_regdom_custom_01,
 	&hwsim_world_regdom_custom_02,
 	&hwsim_world_regdom_custom_03,
 };

 struct hwsim_vif_priv {
 	u32 magic;
 	u8 bssid[ETH_ALEN];
 	bool assoc;
 	bool bcn_en;
 	u16 aid;
 };

 #define HWSIM_VIF_MAGIC	0x69537748

 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 {
 	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 	WARN(vp->magic != HWSIM_VIF_MAGIC,
 	     "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 	     vif, vp->magic, vif->addr, vif->type, vif->p2p);
 }

 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 {
 	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 	vp->magic = HWSIM_VIF_MAGIC;
 }

 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 {
 	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 	vp->magic = 0;
 }

 struct hwsim_sta_priv {
 	u32 magic;
 	unsigned int last_link;
 	u16 active_links_rx;
 };

 #define HWSIM_STA_MAGIC	0x6d537749

 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 {
 	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 	WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 }

 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 {
 	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 	sp->magic = HWSIM_STA_MAGIC;
 }

 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 {
 	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 	sp->magic = 0;
 }

 struct hwsim_chanctx_priv {
 	u32 magic;
 };

 #define HWSIM_CHANCTX_MAGIC 0x6d53774a

 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 {
 	struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 	WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 }

 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 {
 	struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 	cp->magic = HWSIM_CHANCTX_MAGIC;
 }

 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 {
 	struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 	cp->magic = 0;
 }

 static unsigned int hwsim_net_id;

 static DEFINE_IDA(hwsim_netgroup_ida);

 struct hwsim_net {
 	int netgroup;
 	u32 wmediumd;
 };

 static inline int hwsim_net_get_netgroup(struct net *net)
 {
 	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);

 	return hwsim_net->netgroup;
 }

 static inline int hwsim_net_set_netgroup(struct net *net)
 {
 	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);

 	hwsim_net->netgroup = ida_alloc(&hwsim_netgroup_ida, GFP_KERNEL);
 	return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
 }

 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 {
 	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);

 	return hwsim_net->wmediumd;
 }

 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 {
 	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);

 	hwsim_net->wmediumd = portid;
 }

 static struct class *hwsim_class;

 static struct net_device *hwsim_mon; /* global monitor netdev */

 #define CHAN2G(_freq)  { \
 	.band = NL80211_BAND_2GHZ, \
 	.center_freq = (_freq), \
 	.hw_value = (_freq), \
 }

 #define CHAN5G(_freq) { \
 	.band = NL80211_BAND_5GHZ, \
 	.center_freq = (_freq), \
 	.hw_value = (_freq), \
 }

 #define CHAN6G(_freq) { \
 	.band = NL80211_BAND_6GHZ, \
 	.center_freq = (_freq), \
 	.hw_value = (_freq), \
 }

 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 	CHAN2G(2412), /* Channel 1 */
 	CHAN2G(2417), /* Channel 2 */
 	CHAN2G(2422), /* Channel 3 */
 	CHAN2G(2427), /* Channel 4 */
 	CHAN2G(2432), /* Channel 5 */
 	CHAN2G(2437), /* Channel 6 */
 	CHAN2G(2442), /* Channel 7 */
 	CHAN2G(2447), /* Channel 8 */
 	CHAN2G(2452), /* Channel 9 */
 	CHAN2G(2457), /* Channel 10 */
 	CHAN2G(2462), /* Channel 11 */
 	CHAN2G(2467), /* Channel 12 */
 	CHAN2G(2472), /* Channel 13 */
 	CHAN2G(2484), /* Channel 14 */
 };

 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 	CHAN5G(5180), /* Channel 36 */
 	CHAN5G(5200), /* Channel 40 */
 	CHAN5G(5220), /* Channel 44 */
 	CHAN5G(5240), /* Channel 48 */

 	CHAN5G(5260), /* Channel 52 */
 	CHAN5G(5280), /* Channel 56 */
 	CHAN5G(5300), /* Channel 60 */
 	CHAN5G(5320), /* Channel 64 */

 	CHAN5G(5500), /* Channel 100 */
 	CHAN5G(5520), /* Channel 104 */
 	CHAN5G(5540), /* Channel 108 */
 	CHAN5G(5560), /* Channel 112 */
 	CHAN5G(5580), /* Channel 116 */
 	CHAN5G(5600), /* Channel 120 */
 	CHAN5G(5620), /* Channel 124 */
 	CHAN5G(5640), /* Channel 128 */
 	CHAN5G(5660), /* Channel 132 */
 	CHAN5G(5680), /* Channel 136 */
 	CHAN5G(5700), /* Channel 140 */

 	CHAN5G(5745), /* Channel 149 */
 	CHAN5G(5765), /* Channel 153 */
 	CHAN5G(5785), /* Channel 157 */
 	CHAN5G(5805), /* Channel 161 */
 	CHAN5G(5825), /* Channel 165 */
 	CHAN5G(5845), /* Channel 169 */

 	CHAN5G(5855), /* Channel 171 */
 	CHAN5G(5860), /* Channel 172 */
 	CHAN5G(5865), /* Channel 173 */
 	CHAN5G(5870), /* Channel 174 */

 	CHAN5G(5875), /* Channel 175 */
 	CHAN5G(5880), /* Channel 176 */
 	CHAN5G(5885), /* Channel 177 */
 	CHAN5G(5890), /* Channel 178 */
 	CHAN5G(5895), /* Channel 179 */
 	CHAN5G(5900), /* Channel 180 */
 	CHAN5G(5905), /* Channel 181 */

 	CHAN5G(5910), /* Channel 182 */
 	CHAN5G(5915), /* Channel 183 */
 	CHAN5G(5920), /* Channel 184 */
 	CHAN5G(5925), /* Channel 185 */
 };

 static const struct ieee80211_channel hwsim_channels_6ghz[] = {
 	CHAN6G(5955), /* Channel 1 */
 	CHAN6G(5975), /* Channel 5 */
 	CHAN6G(5995), /* Channel 9 */
 	CHAN6G(6015), /* Channel 13 */
 	CHAN6G(6035), /* Channel 17 */
 	CHAN6G(6055), /* Channel 21 */
 	CHAN6G(6075), /* Channel 25 */
 	CHAN6G(6095), /* Channel 29 */
 	CHAN6G(6115), /* Channel 33 */
 	CHAN6G(6135), /* Channel 37 */
 	CHAN6G(6155), /* Channel 41 */
 	CHAN6G(6175), /* Channel 45 */
 	CHAN6G(6195), /* Channel 49 */
 	CHAN6G(6215), /* Channel 53 */
 	CHAN6G(6235), /* Channel 57 */
 	CHAN6G(6255), /* Channel 61 */
 	CHAN6G(6275), /* Channel 65 */
 	CHAN6G(6295), /* Channel 69 */
 	CHAN6G(6315), /* Channel 73 */
 	CHAN6G(6335), /* Channel 77 */
 	CHAN6G(6355), /* Channel 81 */
 	CHAN6G(6375), /* Channel 85 */
 	CHAN6G(6395), /* Channel 89 */
 	CHAN6G(6415), /* Channel 93 */
 	CHAN6G(6435), /* Channel 97 */
 	CHAN6G(6455), /* Channel 181 */
 	CHAN6G(6475), /* Channel 105 */
 	CHAN6G(6495), /* Channel 109 */
 	CHAN6G(6515), /* Channel 113 */
 	CHAN6G(6535), /* Channel 117 */
 	CHAN6G(6555), /* Channel 121 */
 	CHAN6G(6575), /* Channel 125 */
 	CHAN6G(6595), /* Channel 129 */
 	CHAN6G(6615), /* Channel 133 */
 	CHAN6G(6635), /* Channel 137 */
 	CHAN6G(6655), /* Channel 141 */
 	CHAN6G(6675), /* Channel 145 */
 	CHAN6G(6695), /* Channel 149 */
 	CHAN6G(6715), /* Channel 153 */
 	CHAN6G(6735), /* Channel 157 */
 	CHAN6G(6755), /* Channel 161 */
 	CHAN6G(6775), /* Channel 165 */
 	CHAN6G(6795), /* Channel 169 */
 	CHAN6G(6815), /* Channel 173 */
 	CHAN6G(6835), /* Channel 177 */
 	CHAN6G(6855), /* Channel 181 */
 	CHAN6G(6875), /* Channel 185 */
 	CHAN6G(6895), /* Channel 189 */
 	CHAN6G(6915), /* Channel 193 */
 	CHAN6G(6935), /* Channel 197 */
 	CHAN6G(6955), /* Channel 201 */
 	CHAN6G(6975), /* Channel 205 */
 	CHAN6G(6995), /* Channel 209 */
 	CHAN6G(7015), /* Channel 213 */
 	CHAN6G(7035), /* Channel 217 */
 	CHAN6G(7055), /* Channel 221 */
 	CHAN6G(7075), /* Channel 225 */
 	CHAN6G(7095), /* Channel 229 */
 	CHAN6G(7115), /* Channel 233 */
 };

 #define NUM_S1G_CHANS_US 51
 static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];

 static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
 	.s1g = true,
 	.cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
 		 0,
 		 0,
 		 S1G_CAP3_MAX_MPDU_LEN,
 		 0,
 		 S1G_CAP5_AMPDU,
 		 0,
 		 S1G_CAP7_DUP_1MHZ,
 		 S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
 		 0},
 	.nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
 	/* RX Highest Supported Long GI Data Rate 0:7 */
 		     0,
 	/* RX Highest Supported Long GI Data Rate 0:7 */
 	/* TX S1G MCS Map 0:6 */
 		     0xfa,
 	/* TX S1G MCS Map :7 */
 	/* TX Highest Supported Long GI Data Rate 0:6 */
 		     0x80,
 	/* TX Highest Supported Long GI Data Rate 7:8 */
 	/* Rx Single spatial stream and S1G-MCS Map for 1MHz */
 	/* Tx Single spatial stream and S1G-MCS Map for 1MHz */
 		     0 },
 };

 static void hwsim_init_s1g_channels(struct ieee80211_channel *chans)
 {
 	int ch, freq;

 	for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
 		freq = 902000 + (ch + 1) * 500;
 		chans[ch].band = NL80211_BAND_S1GHZ;
 		chans[ch].center_freq = KHZ_TO_MHZ(freq);
 		chans[ch].freq_offset = freq % 1000;
 		chans[ch].hw_value = ch + 1;
 	}
 }

 static const struct ieee80211_rate hwsim_rates[] = {
 	{ .bitrate = 10 },
 	{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 	{ .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 	{ .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 	{ .bitrate = 60 },
 	{ .bitrate = 90 },
 	{ .bitrate = 120 },
 	{ .bitrate = 180 },
 	{ .bitrate = 240 },
 	{ .bitrate = 360 },
 	{ .bitrate = 480 },
 	{ .bitrate = 540 }
 };

 #define DEFAULT_RX_RSSI -50

 static const u32 hwsim_ciphers[] = {
 	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,
 	WLAN_CIPHER_SUITE_AES_CMAC,
 	WLAN_CIPHER_SUITE_BIP_CMAC_256,
 	WLAN_CIPHER_SUITE_BIP_GMAC_128,
 	WLAN_CIPHER_SUITE_BIP_GMAC_256,
 };

 #define OUI_QCA 0x001374
 #define QCA_NL80211_SUBCMD_TEST 1
 enum qca_nl80211_vendor_subcmds {
 	QCA_WLAN_VENDOR_ATTR_TEST = 8,
 	QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 };

 static const struct nla_policy
 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 	[QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 };

 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 					  struct wireless_dev *wdev,
 					  const void *data, int data_len)
 {
 	struct sk_buff *skb;
 	struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 	int err;
 	u32 val;

 	err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
 				   data_len, hwsim_vendor_test_policy, NULL);
 	if (err)
 		return err;
 	if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 		return -EINVAL;
 	val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 	wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);

 	/* Send a vendor event as a test. Note that this would not normally be
 	 * done within a command handler, but rather, based on some other
 	 * trigger. For simplicity, this command is used to trigger the event
 	 * here.
 	 *
 	 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 	 */
 	skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 	if (skb) {
 		/* skb_put() or nla_put() will fill up data within
 		 * NL80211_ATTR_VENDOR_DATA.
 		 */

 		/* Add vendor data */
 		nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);

 		/* Send the event - this will call nla_nest_end() */
 		cfg80211_vendor_event(skb, GFP_KERNEL);
 	}

 	/* Send a response to the command */
 	skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 	if (!skb)
 		return -ENOMEM;

 	/* skb_put() or nla_put() will fill up data within
 	 * NL80211_ATTR_VENDOR_DATA
 	 */
 	nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);

 	return cfg80211_vendor_cmd_reply(skb);
 }

 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 	{
 		.info = { .vendor_id = OUI_QCA,
 			  .subcmd = QCA_NL80211_SUBCMD_TEST },
 		.flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 		.doit = mac80211_hwsim_vendor_cmd_test,
 		.policy = hwsim_vendor_test_policy,
 		.maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
 	}
 };

 /* Advertise support vendor specific events */
 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 	{ .vendor_id = OUI_QCA, .subcmd = 1 },
 };

 static DEFINE_SPINLOCK(hwsim_radio_lock);
 static LIST_HEAD(hwsim_radios);
 static struct rhashtable hwsim_radios_rht;
 static int hwsim_radio_idx;
 static int hwsim_radios_generation = 1;

 static struct platform_driver mac80211_hwsim_driver = {
 	.driver = {
 		.name = "mac80211_hwsim",
 	},
 };

 struct mac80211_hwsim_link_data {
 	u32 link_id;
 	u64 beacon_int	/* beacon interval in us */;
 	struct hrtimer beacon_timer;
 };

 struct mac80211_hwsim_data {
 	struct list_head list;
 	struct rhash_head rht;
 	struct ieee80211_hw *hw;
 	struct device *dev;
 	struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 	struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 	struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 	struct ieee80211_channel channels_6ghz[ARRAY_SIZE(hwsim_channels_6ghz)];
 	struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
 	struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 	struct ieee80211_iface_combination if_combination;
 	struct ieee80211_iface_limit if_limits[3];
 	int n_if_limits;

 	u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];

 	struct mac_address addresses[2];
 	int channels, idx;
 	bool use_chanctx;
 	bool destroy_on_close;
 	u32 portid;
 	char alpha2[2];
 	const struct ieee80211_regdomain *regd;

 	struct ieee80211_channel *tmp_chan;
 	struct ieee80211_channel *roc_chan;
 	u32 roc_duration;
 	struct delayed_work roc_start;
 	struct delayed_work roc_done;
 	struct delayed_work hw_scan;
 	struct cfg80211_scan_request *hw_scan_request;
 	struct ieee80211_vif *hw_scan_vif;
 	int scan_chan_idx;
 	u8 scan_addr[ETH_ALEN];
 	struct {
 		struct ieee80211_channel *channel;
 		unsigned long next_start, start, end;
 	} survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 		      ARRAY_SIZE(hwsim_channels_5ghz) +
 		      ARRAY_SIZE(hwsim_channels_6ghz)];

 	struct ieee80211_channel *channel;
 	enum nl80211_chan_width bw;
 	unsigned int rx_filter;
 	bool started, idle, scanning;
 	struct mutex mutex;
 	enum ps_mode {
 		PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 	} ps;
 	bool ps_poll_pending;
 	struct dentry *debugfs;

 	atomic_t pending_cookie;
 	struct sk_buff_head pending;	/* packets pending */
 	/*
 	 * Only radios in the same group can communicate together (the
 	 * channel has to match too). Each bit represents a group. A
 	 * radio can be in more than one group.
 	 */
 	u64 group;

 	/* group shared by radios created in the same netns */
 	int netgroup;
 	/* wmediumd portid responsible for netgroup of this radio */
 	u32 wmediumd;

 	/* difference between this hw's clock and the real clock, in usecs */
 	s64 tsf_offset;
 	s64 bcn_delta;
 	/* absolute beacon transmission time. Used to cover up "tx" delay. */
 	u64 abs_bcn_ts;

 	/* Stats */
 	u64 tx_pkts;
 	u64 rx_pkts;
 	u64 tx_bytes;
 	u64 rx_bytes;
 	u64 tx_dropped;
 	u64 tx_failed;

 	/* RSSI in rx status of the receiver */
 	int rx_rssi;

 	struct mac80211_hwsim_link_data link_data[IEEE80211_MLD_MAX_NUM_LINKS];
 };

 static const struct rhashtable_params hwsim_rht_params = {
 	.nelem_hint = 2,
 	.automatic_shrinking = true,
 	.key_len = ETH_ALEN,
 	.key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
 	.head_offset = offsetof(struct mac80211_hwsim_data, rht),
 };

 struct hwsim_radiotap_hdr {
 	struct ieee80211_radiotap_header hdr;
 	__le64 rt_tsft;
 	u8 rt_flags;
 	u8 rt_rate;
 	__le16 rt_channel;
 	__le16 rt_chbitmask;
 } __packed;

 struct hwsim_radiotap_ack_hdr {
 	struct ieee80211_radiotap_header hdr;
 	u8 rt_flags;
 	u8 pad;
 	__le16 rt_channel;
 	__le16 rt_chbitmask;
 } __packed;

 /* MAC80211_HWSIM netlink family */
 static struct genl_family hwsim_genl_family;

 enum hwsim_multicast_groups {
 	HWSIM_MCGRP_CONFIG,
 };

 static const struct genl_multicast_group hwsim_mcgrps[] = {
 	[HWSIM_MCGRP_CONFIG] = { .name = "config", },
 };

 /* MAC80211_HWSIM netlink policy */

 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 	[HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
 	[HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
 	[HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 			       .len = IEEE80211_MAX_DATA_LEN },
 	[HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 	[HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 	[HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 	[HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
 				 .len = IEEE80211_TX_MAX_RATES *
 					sizeof(struct hwsim_tx_rate)},
 	[HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 	[HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 	[HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 	[HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 	[HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 	[HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 	[HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 	[HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
 	[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 	[HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 	[HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 	[HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 	[HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
 	[HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
 	[HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
 	[HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
 	[HWSIM_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 };

 #if IS_REACHABLE(CONFIG_VIRTIO)

 /* MAC80211_HWSIM virtio queues */
 static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
 static bool hwsim_virtio_enabled;
 static DEFINE_SPINLOCK(hwsim_virtio_lock);

 static void hwsim_virtio_rx_work(struct work_struct *work);
 static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);

 static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 			   struct sk_buff *skb)
 {
 	struct scatterlist sg[1];
 	unsigned long flags;
 	int err;

 	spin_lock_irqsave(&hwsim_virtio_lock, flags);
 	if (!hwsim_virtio_enabled) {
 		err = -ENODEV;
 		goto out_free;
 	}

 	sg_init_one(sg, skb->head, skb_end_offset(skb));
 	err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
 				   GFP_ATOMIC);
 	if (err)
 		goto out_free;
 	virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
 	spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 	return 0;

 out_free:
 	spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 	nlmsg_free(skb);
 	return err;
 }
 #else
 /* cause a linker error if this ends up being needed */
 extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
 			   struct sk_buff *skb);
 #define hwsim_virtio_enabled false
 #endif

 static int hwsim_get_chanwidth(enum nl80211_chan_width bw)
 {
 	switch (bw) {
 	case NL80211_CHAN_WIDTH_20_NOHT:
 	case NL80211_CHAN_WIDTH_20:
 		return 20;
 	case NL80211_CHAN_WIDTH_40:
 		return 40;
 	case NL80211_CHAN_WIDTH_80:
 		return 80;
 	case NL80211_CHAN_WIDTH_80P80:
 	case NL80211_CHAN_WIDTH_160:
 		return 160;
 	case NL80211_CHAN_WIDTH_320:
 		return 320;
 	case NL80211_CHAN_WIDTH_5:
 		return 5;
 	case NL80211_CHAN_WIDTH_10:
 		return 10;
 	case NL80211_CHAN_WIDTH_1:
 		return 1;
 	case NL80211_CHAN_WIDTH_2:
 		return 2;
 	case NL80211_CHAN_WIDTH_4:
 		return 4;
 	case NL80211_CHAN_WIDTH_8:
 		return 8;
 	case NL80211_CHAN_WIDTH_16:
 		return 16;
 	}

 	return INT_MAX;
 }

 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 				    struct sk_buff *skb,
 				    struct ieee80211_channel *chan);

 /* sysfs attributes */
 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 {
 	struct mac80211_hwsim_data *data = dat;
 	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 	struct sk_buff *skb;
 	struct ieee80211_pspoll *pspoll;

 	if (!vp->assoc)
 		return;

 	wiphy_dbg(data->hw->wiphy,
 		  "%s: send PS-Poll to %pM for aid %d\n",
 		  __func__, vp->bssid, vp->aid);

 	skb = dev_alloc_skb(sizeof(*pspoll));
 	if (!skb)
 		return;
 	pspoll = skb_put(skb, sizeof(*pspoll));
 	pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 					    IEEE80211_STYPE_PSPOLL |
 					    IEEE80211_FCTL_PM);
 	pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 	memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 	memcpy(pspoll->ta, mac, ETH_ALEN);

 	rcu_read_lock();
 	mac80211_hwsim_tx_frame(data->hw, skb,
 				rcu_dereference(vif->bss_conf.chanctx_conf)->def.chan);
 	rcu_read_unlock();
 }

 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 				struct ieee80211_vif *vif, int ps)
 {
 	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 	struct sk_buff *skb;
 	struct ieee80211_hdr *hdr;
 	struct ieee80211_tx_info *cb;

 	if (!vp->assoc)
 		return;

 	wiphy_dbg(data->hw->wiphy,
 		  "%s: send data::nullfunc to %pM ps=%d\n",
 		  __func__, vp->bssid, ps);

 	skb = dev_alloc_skb(sizeof(*hdr));
 	if (!skb)
 		return;
 	hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 	hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 					 IEEE80211_STYPE_NULLFUNC |
 					 IEEE80211_FCTL_TODS |
 					 (ps ? IEEE80211_FCTL_PM : 0));
 	hdr->duration_id = cpu_to_le16(0);
 	memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 	memcpy(hdr->addr2, mac, ETH_ALEN);
 	memcpy(hdr->addr3, vp->bssid, ETH_ALEN);

 	cb = IEEE80211_SKB_CB(skb);
 	cb->control.rates[0].count = 1;
 	cb->control.rates[1].idx = -1;

 	rcu_read_lock();
 	mac80211_hwsim_tx_frame(data->hw, skb,
 				rcu_dereference(vif->bss_conf.chanctx_conf)->def.chan);
 	rcu_read_unlock();
 }


 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 				   struct ieee80211_vif *vif)
 {
 	struct mac80211_hwsim_data *data = dat;
 	hwsim_send_nullfunc(data, mac, vif, 1);
 }

 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 				      struct ieee80211_vif *vif)
 {
 	struct mac80211_hwsim_data *data = dat;
 	hwsim_send_nullfunc(data, mac, vif, 0);
 }

 static int hwsim_fops_ps_read(void *dat, u64 *val)
 {
 	struct mac80211_hwsim_data *data = dat;
 	*val = data->ps;
 	return 0;
 }

 static int hwsim_fops_ps_write(void *dat, u64 val)
 {
 	struct mac80211_hwsim_data *data = dat;
 	enum ps_mode old_ps;

 	if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 	    val != PS_MANUAL_POLL)
 		return -EINVAL;

 	if (val == PS_MANUAL_POLL) {
 		if (data->ps != PS_ENABLED)
 			return -EINVAL;
 		local_bh_disable();
 		ieee80211_iterate_active_interfaces_atomic(
 			data->hw, IEEE80211_IFACE_ITER_NORMAL,
 			hwsim_send_ps_poll, data);
 		local_bh_enable();
 		return 0;
 	}
 	old_ps = data->ps;
 	data->ps = val;

 	local_bh_disable();
 	if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 		ieee80211_iterate_active_interfaces_atomic(
 			data->hw, IEEE80211_IFACE_ITER_NORMAL,
 			hwsim_send_nullfunc_ps, data);
 	} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 		ieee80211_iterate_active_interfaces_atomic(
 			data->hw, IEEE80211_IFACE_ITER_NORMAL,
 			hwsim_send_nullfunc_no_ps, data);
 	}
 	local_bh_enable();

 	return 0;
 }

 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 			 "%llu\n");

 static int hwsim_write_simulate_radar(void *dat, u64 val)
 {
 	struct mac80211_hwsim_data *data = dat;

 	ieee80211_radar_detected(data->hw);

 	return 0;
 }

 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
 			 hwsim_write_simulate_radar, "%llu\n");

 static int hwsim_fops_group_read(void *dat, u64 *val)
 {
 	struct mac80211_hwsim_data *data = dat;
 	*val = data->group;
 	return 0;
 }

 static int hwsim_fops_group_write(void *dat, u64 val)
 {
 	struct mac80211_hwsim_data *data = dat;
 	data->group = val;
 	return 0;
 }

 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
 			 hwsim_fops_group_read, hwsim_fops_group_write,
 			 "%llx\n");

 static int hwsim_fops_rx_rssi_read(void *dat, u64 *val)
 {
 	struct mac80211_hwsim_data *data = dat;
 	*val = data->rx_rssi;
 	return 0;
 }

 static int hwsim_fops_rx_rssi_write(void *dat, u64 val)
 {
 	struct mac80211_hwsim_data *data = dat;
 	int rssi = (int)val;

 	if (rssi >= 0 || rssi < -100)
 		return -EINVAL;

 	data->rx_rssi = rssi;
 	return 0;
 }

 DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_rx_rssi,
 			 hwsim_fops_rx_rssi_read, hwsim_fops_rx_rssi_write,
 			 "%lld\n");

 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 					struct net_device *dev)
 {
 	/* TODO: allow packet injection */
 	dev_kfree_skb(skb);
 	return NETDEV_TX_OK;
 }

 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 {
 	return ktime_to_us(ktime_get_real());
 }

 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 {
 	u64 now = mac80211_hwsim_get_tsf_raw();
 	return cpu_to_le64(now + data->tsf_offset);
 }

 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 				  struct ieee80211_vif *vif)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 }

 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 		struct ieee80211_vif *vif, u64 tsf)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	u64 now = mac80211_hwsim_get_tsf(hw, vif);
 	/* MLD not supported here */
 	u32 bcn_int = data->link_data[0].beacon_int;
 	u64 delta = abs(tsf - now);

 	/* adjust after beaconing with new timestamp at old TBTT */
 	if (tsf > now) {
 		data->tsf_offset += delta;
 		data->bcn_delta = do_div(delta, bcn_int);
 	} else {
 		data->tsf_offset -= delta;
 		data->bcn_delta = -(s64)do_div(delta, bcn_int);
 	}
 }

 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 				      struct sk_buff *tx_skb,
 				      struct ieee80211_channel *chan)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	struct sk_buff *skb;
 	struct hwsim_radiotap_hdr *hdr;
 	u16 flags, bitrate;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 	struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);

 	if (!txrate)
 		bitrate = 0;
 	else
 		bitrate = txrate->bitrate;

 	if (!netif_running(hwsim_mon))
 		return;

 	skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 	if (skb == NULL)
 		return;

 	hdr = skb_push(skb, sizeof(*hdr));
 	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 	hdr->hdr.it_pad = 0;
 	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 					  (1 << IEEE80211_RADIOTAP_RATE) |
 					  (1 << IEEE80211_RADIOTAP_TSFT) |
 					  (1 << IEEE80211_RADIOTAP_CHANNEL));
 	hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 	hdr->rt_flags = 0;
 	hdr->rt_rate = bitrate / 5;
 	hdr->rt_channel = cpu_to_le16(chan->center_freq);
 	flags = IEEE80211_CHAN_2GHZ;
 	if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
 		flags |= IEEE80211_CHAN_OFDM;
 	else
 		flags |= IEEE80211_CHAN_CCK;
 	hdr->rt_chbitmask = cpu_to_le16(flags);

 	skb->dev = hwsim_mon;
 	skb_reset_mac_header(skb);
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
 	skb->pkt_type = PACKET_OTHERHOST;
 	skb->protocol = htons(ETH_P_802_2);
 	memset(skb->cb, 0, sizeof(skb->cb));
 	netif_rx(skb);
 }


 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 				       const u8 *addr)
 {
 	struct sk_buff *skb;
 	struct hwsim_radiotap_ack_hdr *hdr;
 	u16 flags;
 	struct ieee80211_hdr *hdr11;

 	if (!netif_running(hwsim_mon))
 		return;

 	skb = dev_alloc_skb(100);
 	if (skb == NULL)
 		return;

 	hdr = skb_put(skb, sizeof(*hdr));
 	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 	hdr->hdr.it_pad = 0;
 	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 					  (1 << IEEE80211_RADIOTAP_CHANNEL));
 	hdr->rt_flags = 0;
 	hdr->pad = 0;
 	hdr->rt_channel = cpu_to_le16(chan->center_freq);
 	flags = IEEE80211_CHAN_2GHZ;
 	hdr->rt_chbitmask = cpu_to_le16(flags);

 	hdr11 = skb_put(skb, 10);
 	hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 					   IEEE80211_STYPE_ACK);
 	hdr11->duration_id = cpu_to_le16(0);
 	memcpy(hdr11->addr1, addr, ETH_ALEN);

 	skb->dev = hwsim_mon;
 	skb_reset_mac_header(skb);
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
 	skb->pkt_type = PACKET_OTHERHOST;
 	skb->protocol = htons(ETH_P_802_2);
 	memset(skb->cb, 0, sizeof(skb->cb));
 	netif_rx(skb);
 }

 struct mac80211_hwsim_addr_match_data {
 	u8 addr[ETH_ALEN];
 	bool ret;
 };

 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 				     struct ieee80211_vif *vif)
 {
 	int i;
 	struct mac80211_hwsim_addr_match_data *md = data;

 	if (memcmp(mac, md->addr, ETH_ALEN) == 0) {
 		md->ret = true;
 		return;
 	}

 	/* Match the link address */
 	for (i = 0; i < ARRAY_SIZE(vif->link_conf); i++) {
 		struct ieee80211_bss_conf *conf;

 		conf = rcu_dereference(vif->link_conf[i]);
 		if (!conf)
 			continue;

 		if (memcmp(conf->addr, md->addr, ETH_ALEN) == 0) {
 			md->ret = true;
 			return;
 		}
 	}
 }

 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 				      const u8 *addr)
 {
 	struct mac80211_hwsim_addr_match_data md = {
 		.ret = false,
 	};

 	if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 		return true;

 	memcpy(md.addr, addr, ETH_ALEN);

 	ieee80211_iterate_active_interfaces_atomic(data->hw,
 						   IEEE80211_IFACE_ITER_NORMAL,
 						   mac80211_hwsim_addr_iter,
 						   &md);

 	return md.ret;
 }

 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 			   struct sk_buff *skb)
 {
 	switch (data->ps) {
 	case PS_DISABLED:
 		return true;
 	case PS_ENABLED:
 		return false;
 	case PS_AUTO_POLL:
 		/* TODO: accept (some) Beacons by default and other frames only
 		 * if pending PS-Poll has been sent */
 		return true;
 	case PS_MANUAL_POLL:
 		/* Allow unicast frames to own address if there is a pending
 		 * PS-Poll */
 		if (data->ps_poll_pending &&
 		    mac80211_hwsim_addr_match(data, skb->data + 4)) {
 			data->ps_poll_pending = false;
 			return true;
 		}
 		return false;
 	}

 	return true;
 }

 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 				  struct sk_buff *skb, int portid)
 {
 	struct net *net;
 	bool found = false;
 	int res = -ENOENT;

 	rcu_read_lock();
 	for_each_net_rcu(net) {
 		if (data->netgroup == hwsim_net_get_netgroup(net)) {
 			res = genlmsg_unicast(net, skb, portid);
 			found = true;
 			break;
 		}
 	}
 	rcu_read_unlock();

 	if (!found)
 		nlmsg_free(skb);

 	return res;
 }

 static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
 					 const u8 *addr, bool add)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	u32 _portid = READ_ONCE(data->wmediumd);
 	struct sk_buff *skb;
 	void *msg_head;

 	WARN_ON(!is_valid_ether_addr(addr));

 	if (!_portid && !hwsim_virtio_enabled)
 		return;

 	skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 	if (!skb)
 		return;

 	msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 			       add ? HWSIM_CMD_ADD_MAC_ADDR :
 				     HWSIM_CMD_DEL_MAC_ADDR);
 	if (!msg_head) {
 		pr_debug("mac80211_hwsim: problem with msg_head\n");
 		goto nla_put_failure;
 	}

 	if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 		    ETH_ALEN, data->addresses[1].addr))
 		goto nla_put_failure;

 	if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
 		goto nla_put_failure;

 	genlmsg_end(skb, msg_head);

 	if (hwsim_virtio_enabled)
 		hwsim_tx_virtio(data, skb);
 	else
 		hwsim_unicast_netgroup(data, skb, _portid);
 	return;
 nla_put_failure:
 	nlmsg_free(skb);
 }

 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
 {
 	u16 result = 0;

 	if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
 		result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
 	if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
 		result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
 	if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
 		result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
 	if (rate->flags & IEEE80211_TX_RC_MCS)
 		result |= MAC80211_HWSIM_TX_RC_MCS;
 	if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
 		result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
 	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 		result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
 	if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
 		result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
 	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 		result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
 	if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
 		result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
 	if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 		result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
 	if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 		result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;

 	return result;
 }

 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 				       struct sk_buff *my_skb,
 				       int dst_portid,
 				       struct ieee80211_channel *channel)
 {
 	struct sk_buff *skb;
 	struct mac80211_hwsim_data *data = hw->priv;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 	void *msg_head;
 	unsigned int hwsim_flags = 0;
 	int i;
 	struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 	struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
 	uintptr_t cookie;

 	if (data->ps != PS_DISABLED)
 		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 	/* If the queue contains MAX_QUEUE skb's drop some */
 	if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 		/* Dropping until WARN_QUEUE level */
 		while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
 			ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
 			data->tx_dropped++;
 		}
 	}

 	skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 	if (skb == NULL)
 		goto nla_put_failure;

 	msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 			       HWSIM_CMD_FRAME);
 	if (msg_head == NULL) {
 		pr_debug("mac80211_hwsim: problem with msg_head\n");
 		goto nla_put_failure;
 	}

 	if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 		    ETH_ALEN, data->addresses[1].addr))
 		goto nla_put_failure;

 	/* We get the skb->data */
 	if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 		goto nla_put_failure;

 	/* We get the flags for this transmission, and we translate them to
 	   wmediumd flags  */

 	if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 		hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;

 	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 		hwsim_flags |= HWSIM_TX_CTL_NO_ACK;

 	if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 		goto nla_put_failure;

 	if (nla_put_u32(skb, HWSIM_ATTR_FREQ, channel->center_freq))
 		goto nla_put_failure;

 	/* We get the tx control (rate and retries) info*/

 	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 		tx_attempts[i].idx = info->status.rates[i].idx;
 		tx_attempts_flags[i].idx = info->status.rates[i].idx;
 		tx_attempts[i].count = info->status.rates[i].count;
 		tx_attempts_flags[i].flags =
 				trans_tx_rate_flags_ieee2hwsim(
 						&info->status.rates[i]);
 	}

 	if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 		    sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 		    tx_attempts))
 		goto nla_put_failure;

 	if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
 		    sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
 		    tx_attempts_flags))
 		goto nla_put_failure;

 	/* We create a cookie to identify this skb */
 	cookie = atomic_inc_return(&data->pending_cookie);
 	info->rate_driver_data[0] = (void *)cookie;
 	if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
 		goto nla_put_failure;

 	genlmsg_end(skb, msg_head);

 	if (hwsim_virtio_enabled) {
 		if (hwsim_tx_virtio(data, skb))
 			goto err_free_txskb;
 	} else {
 		if (hwsim_unicast_netgroup(data, skb, dst_portid))
 			goto err_free_txskb;
 	}

 	/* Enqueue the packet */
 	skb_queue_tail(&data->pending, my_skb);
 	data->tx_pkts++;
 	data->tx_bytes += my_skb->len;
 	return;

 nla_put_failure:
 	nlmsg_free(skb);
 err_free_txskb:
 	pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
 	ieee80211_free_txskb(hw, my_skb);
 	data->tx_failed++;
 }

 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 			       struct ieee80211_channel *c2)
 {
 	if (!c1 || !c2)
 		return false;

 	return c1->center_freq == c2->center_freq;
 }

 struct tx_iter_data {
 	struct ieee80211_channel *channel;
 	bool receive;
 };

 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 				   struct ieee80211_vif *vif)
 {
 	struct tx_iter_data *data = _data;
 	int i;

 	for (i = 0; i < ARRAY_SIZE(vif->link_conf); i++) {
 		struct ieee80211_bss_conf *conf;
 		struct ieee80211_chanctx_conf *chanctx;

 		conf = rcu_dereference(vif->link_conf[i]);
 		if (!conf)
 			continue;

 		chanctx = rcu_dereference(conf->chanctx_conf);
 		if (!chanctx)
 			continue;

 		if (!hwsim_chans_compat(data->channel, chanctx->def.chan))
 			continue;

 		data->receive = true;
 		return;
 	}
 }

 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
 {
 	/*
 	 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
 	 * e.g. like this:
 	 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
 	 * (but you should use a valid OUI, not that)
 	 *
 	 * If anyone wants to 'donate' a radiotap OUI/subns code
 	 * please send a patch removing this #ifdef and changing
 	 * the values accordingly.
 	 */
 #ifdef HWSIM_RADIOTAP_OUI
 	struct ieee80211_vendor_radiotap *rtap;

 	/*
 	 * Note that this code requires the headroom in the SKB
 	 * that was allocated earlier.
 	 */
 	rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
 	rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
 	rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
 	rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
 	rtap->subns = 127;

 	/*
 	 * Radiotap vendor namespaces can (and should) also be
 	 * split into fields by using the standard radiotap
 	 * presence bitmap mechanism. Use just BIT(0) here for
 	 * the presence bitmap.
 	 */
 	rtap->present = BIT(0);
 	/* We have 8 bytes of (dummy) data */
 	rtap->len = 8;
 	/* For testing, also require it to be aligned */
 	rtap->align = 8;
 	/* And also test that padding works, 4 bytes */
 	rtap->pad = 4;
 	/* push the data */
 	memcpy(rtap->data, "ABCDEFGH", 8);
 	/* make sure to clear padding, mac80211 doesn't */
 	memset(rtap->data + 8, 0, 4);

 	IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
 #endif
 }

 static void mac80211_hwsim_rx(struct mac80211_hwsim_data *data,
 			      struct ieee80211_rx_status *rx_status,
 			      struct sk_buff *skb)
 {
 	struct ieee80211_hdr *hdr = (void *)skb->data;

 	if (!ieee80211_has_morefrags(hdr->frame_control) &&
 	    !is_multicast_ether_addr(hdr->addr1) &&
 	    (ieee80211_is_mgmt(hdr->frame_control) ||
 	     ieee80211_is_data(hdr->frame_control))) {
 		struct ieee80211_sta *sta;
 		unsigned int link_id;

 		rcu_read_lock();
 		sta = ieee80211_find_sta_by_link_addrs(data->hw, hdr->addr2,
 						       hdr->addr1, &link_id);
 		if (sta) {
 			struct hwsim_sta_priv *sp = (void *)sta->drv_priv;

 			if (ieee80211_has_pm(hdr->frame_control))
 				sp->active_links_rx &= ~BIT(link_id);
 			else
 				sp->active_links_rx |= BIT(link_id);
 		}
 		rcu_read_unlock();
 	}

 	memcpy(IEEE80211_SKB_RXCB(skb), rx_status, sizeof(*rx_status));

 	mac80211_hwsim_add_vendor_rtap(skb);

 	data->rx_pkts++;
 	data->rx_bytes += skb->len;
 	ieee80211_rx_irqsafe(data->hw, skb);
 }

 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 					  struct sk_buff *skb,
 					  struct ieee80211_channel *chan)
 {
 	struct mac80211_hwsim_data *data = hw->priv, *data2;
 	bool ack = false;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct ieee80211_rx_status rx_status;
 	u64 now;

 	memset(&rx_status, 0, sizeof(rx_status));
 	rx_status.flag |= RX_FLAG_MACTIME_START;
 	rx_status.freq = chan->center_freq;
 	rx_status.freq_offset = chan->freq_offset ? 1 : 0;
 	rx_status.band = chan->band;
 	if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 		rx_status.rate_idx =
 			ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
 		rx_status.nss =
 			ieee80211_rate_get_vht_nss(&info->control.rates[0]);
 		rx_status.encoding = RX_ENC_VHT;
 	} else {
 		rx_status.rate_idx = info->control.rates[0].idx;
 		if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 			rx_status.encoding = RX_ENC_HT;
 	}
 	if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 		rx_status.bw = RATE_INFO_BW_40;
 	else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 		rx_status.bw = RATE_INFO_BW_80;
 	else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 		rx_status.bw = RATE_INFO_BW_160;
 	else
 		rx_status.bw = RATE_INFO_BW_20;
 	if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 		rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
 	/* TODO: simulate optional packet loss */
 	rx_status.signal = data->rx_rssi;
 	if (info->control.vif)
 		rx_status.signal += info->control.vif->bss_conf.txpower;

 	if (data->ps != PS_DISABLED)
 		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);

 	/* release the skb's source info */
 	skb_orphan(skb);
 	skb_dst_drop(skb);
 	skb->mark = 0;
 	skb_ext_reset(skb);
 	nf_reset_ct(skb);

 	/*
 	 * Get absolute mactime here so all HWs RX at the "same time", and
 	 * absolute TX time for beacon mactime so the timestamp matches.
 	 * Giving beacons a different mactime than non-beacons looks messy, but
 	 * it helps the Toffset be exact and a ~10us mactime discrepancy
 	 * probably doesn't really matter.
 	 */
 	if (ieee80211_is_beacon(hdr->frame_control) ||
 	    ieee80211_is_probe_resp(hdr->frame_control)) {
 		rx_status.boottime_ns = ktime_get_boottime_ns();
 		now = data->abs_bcn_ts;
 	} else {
 		now = mac80211_hwsim_get_tsf_raw();
 	}

 	/* Copy skb to all enabled radios that are on the current frequency */
 	spin_lock(&hwsim_radio_lock);
 	list_for_each_entry(data2, &hwsim_radios, list) {
 		struct sk_buff *nskb;
 		struct tx_iter_data tx_iter_data = {
 			.receive = false,
 			.channel = chan,
 		};

 		if (data == data2)
 			continue;

 		if (!data2->started || (data2->idle && !data2->tmp_chan) ||
 		    !hwsim_ps_rx_ok(data2, skb))
 			continue;

 		if (!(data->group & data2->group))
 			continue;

 		if (data->netgroup != data2->netgroup)
 			continue;

 		if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
 		    !hwsim_chans_compat(chan, data2->channel)) {
 			ieee80211_iterate_active_interfaces_atomic(
 				data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 				mac80211_hwsim_tx_iter, &tx_iter_data);
 			if (!tx_iter_data.receive)
 				continue;
 		}

 		/*
 		 * reserve some space for our vendor and the normal
 		 * radiotap header, since we're copying anyway
 		 */
 		if (skb->len < PAGE_SIZE && paged_rx) {
 			struct page *page = alloc_page(GFP_ATOMIC);

 			if (!page)
 				continue;

 			nskb = dev_alloc_skb(128);
 			if (!nskb) {
 				__free_page(page);
 				continue;
 			}

 			memcpy(page_address(page), skb->data, skb->len);
 			skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
 		} else {
 			nskb = skb_copy(skb, GFP_ATOMIC);
 			if (!nskb)
 				continue;
 		}

 		if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 			ack = true;

 		rx_status.mactime = now + data2->tsf_offset;

 		mac80211_hwsim_rx(data2, &rx_status, nskb);
 	}
 	spin_unlock(&hwsim_radio_lock);

 	return ack;
 }

 static struct ieee80211_bss_conf *
 mac80211_hwsim_select_tx_link(struct mac80211_hwsim_data *data,
 			      struct ieee80211_vif *vif,
 			      struct ieee80211_sta *sta,
 			      struct ieee80211_hdr *hdr,
 			      struct ieee80211_link_sta **link_sta)
 {
 	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 	int i;

 	if (!vif->valid_links)
 		return &vif->bss_conf;

 	WARN_ON(is_multicast_ether_addr(hdr->addr1));

 	if (WARN_ON_ONCE(!sta || !sta->valid_links))
 		return &vif->bss_conf;

 	for (i = 0; i < ARRAY_SIZE(vif->link_conf); i++) {
 		struct ieee80211_bss_conf *bss_conf;
 		unsigned int link_id;

 		/* round-robin the available link IDs */
 		link_id = (sp->last_link + i + 1) % ARRAY_SIZE(vif->link_conf);

 		if (!(vif->active_links & BIT(link_id)))
 			continue;

 		if (!(sp->active_links_rx & BIT(link_id)))
 			continue;

 		*link_sta = rcu_dereference(sta->link[link_id]);
 		if (!*link_sta)
 			continue;

 		bss_conf = rcu_dereference(vif->link_conf[link_id]);
 		if (WARN_ON_ONCE(!bss_conf))
 			continue;

 		/* can happen while switching links */
 		if (!rcu_access_pointer(bss_conf->chanctx_conf))
 			continue;

 		sp->last_link = link_id;
 		return bss_conf;
 	}

 	return NULL;
 }

 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 			      struct ieee80211_tx_control *control,
 			      struct sk_buff *skb)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 	struct ieee80211_hdr *hdr = (void *)skb->data;
 	struct ieee80211_chanctx_conf *chanctx_conf;
 	struct ieee80211_channel *channel;
 	bool ack;
 	enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT;
 	u32 _portid, i;

 	if (WARN_ON(skb->len < 10)) {
 		/* Should not happen; just a sanity check for addr1 use */
 		ieee80211_free_txskb(hw, skb);
 		return;
 	}

 	if (!data->use_chanctx) {
 		channel = data->channel;
 		confbw = data->bw;
 	} else if (txi->hw_queue == 4) {
 		channel = data->tmp_chan;
 	} else {
 		u8 link = u32_get_bits(IEEE80211_SKB_CB(skb)->control.flags,
 				       IEEE80211_TX_CTRL_MLO_LINK);
 		struct ieee80211_vif *vif = txi->control.vif;
 		struct ieee80211_link_sta *link_sta = NULL;
 		struct ieee80211_sta *sta = control->sta;
 		struct ieee80211_bss_conf *bss_conf;

 		if (link != IEEE80211_LINK_UNSPECIFIED) {
 			bss_conf = rcu_dereference(txi->control.vif->link_conf[link]);
 			if (sta)
 				link_sta = rcu_dereference(sta->link[link]);
 		} else {
 			bss_conf = mac80211_hwsim_select_tx_link(data, vif, sta,
 								 hdr, &link_sta);
 		}

 		if (WARN_ON(!bss_conf)) {
 			ieee80211_free_txskb(hw, skb);
 			return;
 		}

 		if (sta && sta->mlo) {
 			if (WARN_ON(!link_sta)) {
 				ieee80211_free_txskb(hw, skb);
 				return;
 			}
 			/* address translation to link addresses on TX */
 			ether_addr_copy(hdr->addr1, link_sta->addr);
 			ether_addr_copy(hdr->addr2, bss_conf->addr);
 			/* translate A3 only if it's the BSSID */
 			if (!ieee80211_has_tods(hdr->frame_control) &&
 			    !ieee80211_has_fromds(hdr->frame_control)) {
 				if (ether_addr_equal(hdr->addr3, sta->addr))
 					ether_addr_copy(hdr->addr3, link_sta->addr);
 				else if (ether_addr_equal(hdr->addr3, vif->addr))
 					ether_addr_copy(hdr->addr3, bss_conf->addr);
 			}
 			/* no need to look at A4, if present it's SA */
 		}

 		chanctx_conf = rcu_dereference(bss_conf->chanctx_conf);
 		if (chanctx_conf) {
 			channel = chanctx_conf->def.chan;
 			confbw = chanctx_conf->def.width;
 		} else {
 			channel = NULL;
 		}
 	}

 	if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
 		ieee80211_free_txskb(hw, skb);
 		return;
 	}

 	if (data->idle && !data->tmp_chan) {
 		wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
 		ieee80211_free_txskb(hw, skb);
 		return;
 	}

 	if (txi->control.vif)
 		hwsim_check_magic(txi->control.vif);
 	if (control->sta)
 		hwsim_check_sta_magic(control->sta);

 	if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
 		ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
 				       txi->control.rates,
 				       ARRAY_SIZE(txi->control.rates));

 	for (i = 0; i < ARRAY_SIZE(txi->control.rates); i++) {
 		u16 rflags = txi->control.rates[i].flags;
 		/* initialize to data->bw for 5/10 MHz handling */
 		enum nl80211_chan_width bw = data->bw;

 		if (txi->control.rates[i].idx == -1)
 			break;

 		if (rflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 			bw = NL80211_CHAN_WIDTH_40;
 		else if (rflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 			bw = NL80211_CHAN_WIDTH_80;
 		else if (rflags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 			bw = NL80211_CHAN_WIDTH_160;

 		if (WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw)))
 			return;
 	}

 	if (skb->len >= 24 + 8 &&
 	    ieee80211_is_probe_resp(hdr->frame_control)) {
 		/* fake header transmission time */
 		struct ieee80211_mgmt *mgmt;
 		struct ieee80211_rate *txrate;
 		/* TODO: get MCS */
 		int bitrate = 100;
 		u64 ts;

 		mgmt = (struct ieee80211_mgmt *)skb->data;
 		txrate = ieee80211_get_tx_rate(hw, txi);
 		if (txrate)
 			bitrate = txrate->bitrate;
 		ts = mac80211_hwsim_get_tsf_raw();
 		mgmt->u.probe_resp.timestamp =
 			cpu_to_le64(ts + data->tsf_offset +
 				    24 * 8 * 10 / bitrate);
 	}

 	mac80211_hwsim_monitor_rx(hw, skb, channel);

 	/* wmediumd mode check */
 	_portid = READ_ONCE(data->wmediumd);

 	if (_portid || hwsim_virtio_enabled)
 		return mac80211_hwsim_tx_frame_nl(hw, skb, _portid, channel);

 	/* NO wmediumd detected, perfect medium simulation */
 	data->tx_pkts++;
 	data->tx_bytes += skb->len;
 	ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);

 	if (ack && skb->len >= 16)
 		mac80211_hwsim_monitor_ack(channel, hdr->addr2);

 	ieee80211_tx_info_clear_status(txi);

 	/* frame was transmitted at most favorable rate at first attempt */
 	txi->control.rates[0].count = 1;
 	txi->control.rates[1].idx = -1;

 	if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 		txi->flags |= IEEE80211_TX_STAT_ACK;
 	ieee80211_tx_status_irqsafe(hw, skb);
 }


 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	wiphy_dbg(hw->wiphy, "%s\n", __func__);
 	data->started = true;
 	return 0;
 }


 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	int i;

 	data->started = false;

 	for (i = 0; i < ARRAY_SIZE(data->link_data); i++)
 		hrtimer_cancel(&data->link_data[i].beacon_timer);

 	while (!skb_queue_empty(&data->pending))
 		ieee80211_free_txskb(hw, skb_dequeue(&data->pending));

 	wiphy_dbg(hw->wiphy, "%s\n", __func__);
 }


 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 					struct ieee80211_vif *vif)
 {
 	wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 		  __func__, ieee80211_vif_type_p2p(vif),
 		  vif->addr);
 	hwsim_set_magic(vif);

 	if (vif->type != NL80211_IFTYPE_MONITOR)
 		mac80211_hwsim_config_mac_nl(hw, vif->addr, true);

 	vif->cab_queue = 0;
 	vif->hw_queue[IEEE80211_AC_VO] = 0;
 	vif->hw_queue[IEEE80211_AC_VI] = 1;
 	vif->hw_queue[IEEE80211_AC_BE] = 2;
 	vif->hw_queue[IEEE80211_AC_BK] = 3;

 	return 0;
 }


 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 					   struct ieee80211_vif *vif,
 					   enum nl80211_iftype newtype,
 					   bool newp2p)
 {
 	newtype = ieee80211_iftype_p2p(newtype, newp2p);
 	wiphy_dbg(hw->wiphy,
 		  "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 		  __func__, ieee80211_vif_type_p2p(vif),
 		    newtype, vif->addr);
 	hwsim_check_magic(vif);

 	/*
 	 * interface may change from non-AP to AP in
 	 * which case this needs to be set up again
 	 */
 	vif->cab_queue = 0;

 	return 0;
 }

 static void mac80211_hwsim_remove_interface(
 	struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 {
 	wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 		  __func__, ieee80211_vif_type_p2p(vif),
 		  vif->addr);
 	hwsim_check_magic(vif);
 	hwsim_clear_magic(vif);
 	if (vif->type != NL80211_IFTYPE_MONITOR)
 		mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
 }

 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 				    struct sk_buff *skb,
 				    struct ieee80211_channel *chan)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	u32 _pid = READ_ONCE(data->wmediumd);

 	if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
 		struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
 		ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
 				       txi->control.rates,
 				       ARRAY_SIZE(txi->control.rates));
 	}

 	mac80211_hwsim_monitor_rx(hw, skb, chan);

 	if (_pid || hwsim_virtio_enabled)
 		return mac80211_hwsim_tx_frame_nl(hw, skb, _pid, chan);

 	data->tx_pkts++;
 	data->tx_bytes += skb->len;
 	mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
 	dev_kfree_skb(skb);
 }

 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 				     struct ieee80211_vif *vif)
 {
 	struct mac80211_hwsim_link_data *link_data = arg;
 	u32 link_id = link_data->link_id;
 	struct ieee80211_bss_conf *link_conf;
 	struct mac80211_hwsim_data *data =
 		container_of(link_data, struct mac80211_hwsim_data,
 			     link_data[link_id]);
 	struct ieee80211_hw *hw = data->hw;
 	struct ieee80211_tx_info *info;
 	struct ieee80211_rate *txrate;
 	struct ieee80211_mgmt *mgmt;
 	struct sk_buff *skb;
 	/* TODO: get MCS */
 	int bitrate = 100;

 	hwsim_check_magic(vif);

 	link_conf = rcu_dereference(vif->link_conf[link_id]);
 	if (!link_conf)
 		return;

 	if (vif->type != NL80211_IFTYPE_AP &&
 	    vif->type != NL80211_IFTYPE_MESH_POINT &&
 	    vif->type != NL80211_IFTYPE_ADHOC &&
 	    vif->type != NL80211_IFTYPE_OCB)
 		return;

 	skb = ieee80211_beacon_get(hw, vif, link_data->link_id);
 	if (skb == NULL)
 		return;
 	info = IEEE80211_SKB_CB(skb);
 	if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
 		ieee80211_get_tx_rates(vif, NULL, skb,
 				       info->control.rates,
 				       ARRAY_SIZE(info->control.rates));

 	txrate = ieee80211_get_tx_rate(hw, info);
 	if (txrate)
 		bitrate = txrate->bitrate;

 	mgmt = (struct ieee80211_mgmt *) skb->data;
 	/* fake header transmission time */
 	data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
 	if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
 		struct ieee80211_ext *ext = (void *) mgmt;

 		ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
 							  data->tsf_offset +
 							  10 * 8 * 10 /
 							  bitrate);
 	} else {
 		mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
 						       data->tsf_offset +
 						       24 * 8 * 10 /
 						       bitrate);
 	}

 	mac80211_hwsim_tx_frame(hw, skb,
 			rcu_dereference(link_conf->chanctx_conf)->def.chan);

 	while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
 		mac80211_hwsim_tx_frame(hw, skb,
 			rcu_dereference(link_conf->chanctx_conf)->def.chan);
 	}

 	if (link_conf->csa_active && ieee80211_beacon_cntdwn_is_complete(vif))
 		ieee80211_csa_finish(vif);
 }

 static enum hrtimer_restart
 mac80211_hwsim_beacon(struct hrtimer *timer)
 {
 	struct mac80211_hwsim_link_data *link_data =
 		container_of(timer, struct mac80211_hwsim_link_data, beacon_timer);
 	struct mac80211_hwsim_data *data =
 		container_of(link_data, struct mac80211_hwsim_data,
 			     link_data[link_data->link_id]);
 	struct ieee80211_hw *hw = data->hw;
 	u64 bcn_int = link_data->beacon_int;

 	if (!data->started)
 		return HRTIMER_NORESTART;

 	ieee80211_iterate_active_interfaces_atomic(
 		hw, IEEE80211_IFACE_ITER_NORMAL,
 		mac80211_hwsim_beacon_tx, link_data);

 	/* beacon at new TBTT + beacon interval */
 	if (data->bcn_delta) {
 		bcn_int -= data->bcn_delta;
 		data->bcn_delta = 0;
 	}
 	hrtimer_forward_now(&link_data->beacon_timer,
 			    ns_to_ktime(bcn_int * NSEC_PER_USEC));
 	return HRTIMER_RESTART;
 }

 static const char * const hwsim_chanwidths[] = {
 	[NL80211_CHAN_WIDTH_5] = "ht5",
 	[NL80211_CHAN_WIDTH_10] = "ht10",
 	[NL80211_CHAN_WIDTH_20_NOHT] = "noht",
 	[NL80211_CHAN_WIDTH_20] = "ht20",
 	[NL80211_CHAN_WIDTH_40] = "ht40",
 	[NL80211_CHAN_WIDTH_80] = "vht80",
 	[NL80211_CHAN_WIDTH_80P80] = "vht80p80",
 	[NL80211_CHAN_WIDTH_160] = "vht160",
 	[NL80211_CHAN_WIDTH_1] = "1MHz",
 	[NL80211_CHAN_WIDTH_2] = "2MHz",
 	[NL80211_CHAN_WIDTH_4] = "4MHz",
 	[NL80211_CHAN_WIDTH_8] = "8MHz",
 	[NL80211_CHAN_WIDTH_16] = "16MHz",
 };

 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	struct ieee80211_conf *conf = &hw->conf;
 	static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 		[IEEE80211_SMPS_AUTOMATIC] = "auto",
 		[IEEE80211_SMPS_OFF] = "off",
 		[IEEE80211_SMPS_STATIC] = "static",
 		[IEEE80211_SMPS_DYNAMIC] = "dynamic",
 	};
 	int idx;

 	if (conf->chandef.chan)
 		wiphy_dbg(hw->wiphy,
 			  "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
 			  __func__,
 			  conf->chandef.chan->center_freq,
 			  conf->chandef.center_freq1,
 			  conf->chandef.center_freq2,
 			  hwsim_chanwidths[conf->chandef.width],
 			  !!(conf->flags & IEEE80211_CONF_IDLE),
 			  !!(conf->flags & IEEE80211_CONF_PS),
 			  smps_modes[conf->smps_mode]);
 	else
 		wiphy_dbg(hw->wiphy,
 			  "%s (freq=0 idle=%d ps=%d smps=%s)\n",
 			  __func__,
 			  !!(conf->flags & IEEE80211_CONF_IDLE),
 			  !!(conf->flags & IEEE80211_CONF_PS),
 			  smps_modes[conf->smps_mode]);

 	data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);

 	WARN_ON(conf->chandef.chan && data->use_chanctx);

 	mutex_lock(&data->mutex);
 	if (data->scanning && conf->chandef.chan) {
 		for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
 			if (data->survey_data[idx].channel == data->channel) {
 				data->survey_data[idx].start =
 					data->survey_data[idx].next_start;
 				data->survey_data[idx].end = jiffies;
 				break;
 			}
 		}

 		data->channel = conf->chandef.chan;
 		data->bw = conf->chandef.width;

 		for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
 			if (data->survey_data[idx].channel &&
 			    data->survey_data[idx].channel != data->channel)
 				continue;
 			data->survey_data[idx].channel = data->channel;
 			data->survey_data[idx].next_start = jiffies;
 			break;
 		}
 	} else {
 		data->channel = conf->chandef.chan;
 		data->bw = conf->chandef.width;
 	}
 	mutex_unlock(&data->mutex);

 	for (idx = 0; idx < ARRAY_SIZE(data->link_data); idx++) {
 		struct mac80211_hwsim_link_data *link_data =
 			&data->link_data[idx];

 		if (!data->started || !link_data->beacon_int) {
 			hrtimer_cancel(&link_data->beacon_timer);
 		} else if (!hrtimer_is_queued(&link_data->beacon_timer)) {
 			u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
 			u32 bcn_int = link_data->beacon_int;
 			u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);

 			hrtimer_start(&link_data->beacon_timer,
 				      ns_to_ktime(until_tbtt * NSEC_PER_USEC),
 				      HRTIMER_MODE_REL_SOFT);
 		}
 	}

 	return 0;
 }


 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 					    unsigned int changed_flags,
 					    unsigned int *total_flags,u64 multicast)
 {
 	struct mac80211_hwsim_data *data = hw->priv;

 	wiphy_dbg(hw->wiphy, "%s\n", __func__);

 	data->rx_filter = 0;
 	if (*total_flags & FIF_ALLMULTI)
 		data->rx_filter |= FIF_ALLMULTI;
 	if (*total_flags & FIF_MCAST_ACTION)
 		data->rx_filter |= FIF_MCAST_ACTION;

 	*total_flags = data->rx_filter;
 }

 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
 				       struct ieee80211_vif *vif)
 {
 	unsigned int *count = data;
 	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;

 	if (vp->bcn_en)
 		(*count)++;
 }

 static void mac80211_hwsim_vif_info_changed(struct ieee80211_hw *hw,
 					    struct ieee80211_vif *vif,
 					    u64 changed)
 {
 	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;

 	hwsim_check_magic(vif);

 	wiphy_dbg(hw->wiphy, "%s(changed=0x%llx vif->addr=%pM)\n",
 		  __func__, changed, vif->addr);

 	if (changed & BSS_CHANGED_ASSOC) {
 		wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
 			  vif->cfg.assoc, vif->cfg.aid);
 		vp->assoc = vif->cfg.assoc;
 		vp->aid = vif->cfg.aid;
 	}
 }

 static void mac80211_hwsim_link_info_changed(struct ieee80211_hw *hw,
 					     struct ieee80211_vif *vif,
 					     struct ieee80211_bss_conf *info,
 					     u64 changed)
 {
 	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 	struct mac80211_hwsim_data *data = hw->priv;
 	unsigned int link_id = info->link_id;
 	struct mac80211_hwsim_link_data *link_data = &data->link_data[link_id];

 	hwsim_check_magic(vif);

 	wiphy_dbg(hw->wiphy, "%s(changed=0x%llx vif->addr=%pM, link id %u)\n",
 		  __func__, (unsigned long long)changed, vif->addr, link_id);

 	if (changed & BSS_CHANGED_BSSID) {
 		wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
 			  __func__, info->bssid);
 		memcpy(vp->bssid, info->bssid, ETH_ALEN);
 	}

 	if (changed & BSS_CHANGED_BEACON_ENABLED) {
 		wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
 			  info->enable_beacon, info->beacon_int);
 		vp->bcn_en = info->enable_beacon;
 		if (data->started &&
 		    !hrtimer_is_queued(&link_data->beacon_timer) &&
 		    info->enable_beacon) {
 			u64 tsf, until_tbtt;
 			u32 bcn_int;
 			link_data->beacon_int = info->beacon_int * 1024;
 			tsf = mac80211_hwsim_get_tsf(hw, vif);
 			bcn_int = link_data->beacon_int;
 			until_tbtt = bcn_int - do_div(tsf, bcn_int);

 			hrtimer_start(&link_data->beacon_timer,
 				      ns_to_ktime(until_tbtt * NSEC_PER_USEC),
 				      HRTIMER_MODE_REL_SOFT);
 		} else if (!info->enable_beacon) {
 			unsigned int count = 0;
 			ieee80211_iterate_active_interfaces_atomic(
 				data->hw, IEEE80211_IFACE_ITER_NORMAL,
 				mac80211_hwsim_bcn_en_iter, &count);
 			wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
 				  count);
 			if (count == 0) {
 				hrtimer_cancel(&link_data->beacon_timer);
 				link_data->beacon_int = 0;
 			}
 		}
 	}

 	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 		wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
 			  info->use_cts_prot);
 	}

 	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 		wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
 			  info->use_short_preamble);
 	}

 	if (changed & BSS_CHANGED_ERP_SLOT) {
 		wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
 	}

 	if (changed & BSS_CHANGED_HT) {
 		wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
 			  info->ht_operation_mode);
 	}

 	if (changed & BSS_CHANGED_BASIC_RATES) {
 		wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
 			  (unsigned long long) info->basic_rates);
 	}

 	if (changed & BSS_CHANGED_TXPOWER)
 		wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
 }

 static void
 mac80211_hwsim_sta_rc_update(struct ieee80211_hw *hw,
 			     struct ieee80211_vif *vif,
 			     struct ieee80211_sta *sta,
 			     u32 changed)
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	u32 bw = U32_MAX;
 	int link_id;

 	rcu_read_lock();
 	for (link_id = 0;
 	     link_id < ARRAY_SIZE(vif->link_conf);
 	     link_id++) {
 		enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT;
 		struct ieee80211_bss_conf *vif_conf;
 		struct ieee80211_link_sta *link_sta;

 		link_sta = rcu_dereference(sta->link[link_id]);

 		if (!link_sta)
 			continue;

 		switch (link_sta->bandwidth) {
 #define C(_bw) case IEEE80211_STA_RX_BW_##_bw: bw = _bw; break
 		C(20);
 		C(40);
 		C(80);
 		C(160);
 		C(320);
 #undef C
 		}

 		if (!data->use_chanctx) {
 			confbw = data->bw;
 		} else {
 			struct ieee80211_chanctx_conf *chanctx_conf;

 			vif_conf = rcu_dereference(vif->link_conf[link_id]);
 			if (WARN_ON(!vif_conf))
 				continue;

 			chanctx_conf = rcu_dereference(vif_conf->chanctx_conf);

 			if (!WARN_ON(!chanctx_conf))
 				confbw = chanctx_conf->def.width;
 		}

 		WARN(bw > hwsim_get_chanwidth(confbw),
 		     "intf %pM [link=%d]: bad STA %pM bandwidth %d MHz (%d) > channel config %d MHz (%d)\n",
 		     vif->addr, link_id, sta->addr, bw, sta->deflink.bandwidth,
 		     hwsim_get_chanwidth(data->bw), data->bw);


 	}
 	rcu_read_unlock();


 }

 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 				  struct ieee80211_vif *vif,
 				  struct ieee80211_sta *sta)
 {
 	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;

 	hwsim_check_magic(vif);
 	hwsim_set_sta_magic(sta);
 	mac80211_hwsim_sta_rc_update(hw, vif, sta, 0);

 	if (sta->valid_links) {
 		WARN(hweight16(sta->valid_links) > 1,
 		     "expect to add STA with single link, have 0x%x\n",
 		     sta->valid_links);
 		sp->active_links_rx = sta->valid_links;
 	}

 	return 0;
 }

 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 				     struct ieee80211_vif *vif,
 				     struct ieee80211_sta *sta)
 {
 	hwsim_check_magic(vif);
 	hwsim_clear_sta_magic(sta);

 	return 0;
 }

 static int mac80211_hwsim_sta_state(struct ieee80211_hw *hw,
 				    struct ieee80211_vif *vif,
 				    struct ieee80211_sta *sta,
 				    enum ieee80211_sta_state old_state,
 				    enum ieee80211_sta_state new_state)
 {
 	if (new_state == IEEE80211_STA_NOTEXIST)
 		return mac80211_hwsim_sta_remove(hw, vif, sta);

 	if (old_state == IEEE80211_STA_NOTEXIST)
 		return mac80211_hwsim_sta_add(hw, vif, sta);

 	/*
 	 * when client is authorized (AP station marked as such),
 	 * enable all links
 	 */
 	if (vif->type == NL80211_IFTYPE_STATION &&
 	    new_state == IEEE80211_STA_AUTHORIZED && !sta->tdls)
 		ieee80211_set_active_links_async(vif, vif->valid_links);

 	return 0;
 }

 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 				      struct ieee80211_vif *vif,
 				      enum sta_notify_cmd cmd,
 				      struct ieee80211_sta *sta)
 {
 	hwsim_check_magic(vif);

 	switch (cmd) {
 	case STA_NOTIFY_SLEEP:
 	case STA_NOTIFY_AWAKE:
 		/* TODO: make good use of these flags */
 		break;
 	default:
 		WARN(1, "Invalid sta notify: %d\n", cmd);
 		break;
 	}
 }

 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 				  struct ieee80211_sta *sta,
 				  bool set)
 {
 	hwsim_check_sta_magic(sta);
 	return 0;
 }

 static int mac80211_hwsim_conf_tx(struct ieee80211_hw *hw,
 				  struct ieee80211_vif *vif,
 				  unsigned int link_id, u16 queue,
 				  const struct ieee80211_tx_queue_params *params)
 {
 	wiphy_dbg(hw->wiphy,
 		  "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
 		  __func__, queue,
 		  params->txop, params->cw_min,
 		  params->cw_max, params->aifs);
 	return 0;
 }

 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
 				     struct survey_info *survey)
 {
 	struct mac80211_hwsim_data *hwsim = hw->priv;

 	if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
 		return -ENOENT;

 	mutex_lock(&hwsim->mutex);
 	survey->channel = hwsim->survey_data[idx].channel;
 	if (!survey->channel) {
 		mutex_unlock(&hwsim->mutex);
 		return -ENOENT;
 	}

 	/*
 	 * Magically conjured dummy values --- this is only ok for simulated hardware.
 	 *
 	 * A real driver which cannot determine real values noise MUST NOT
 	 * report any, especially not a magically conjured ones :-)
 	 */
 	survey->filled = SURVEY_INFO_NOISE_DBM |
 			 SURVEY_INFO_TIME |
 			 SURVEY_INFO_TIME_BUSY;
 	survey->noise = -92;
 	survey->time =
 		jiffies_to_msecs(hwsim->survey_data[idx].end -
 				 hwsim->survey_data[idx].start);
 	/* report 12.5% of channel time is used */
 	survey->time_busy = survey->time/8;
 	mutex_unlock(&hwsim->mutex);

 	return 0;
 }

 #ifdef CONFIG_NL80211_TESTMODE
 /*
  * This section contains example code for using netlink
  * attributes with the testmode command in nl80211.
  */

 /* These enums need to be kept in sync with userspace */
 enum hwsim_testmode_attr {
 	__HWSIM_TM_ATTR_INVALID	= 0,
 	HWSIM_TM_ATTR_CMD	= 1,
 	HWSIM_TM_ATTR_PS	= 2,

 	/* keep last */
 	__HWSIM_TM_ATTR_AFTER_LAST,
 	HWSIM_TM_ATTR_MAX	= __HWSIM_TM_ATTR_AFTER_LAST - 1
 };

 enum hwsim_testmode_cmd {
 	HWSIM_TM_CMD_SET_PS		= 0,
 	HWSIM_TM_CMD_GET_PS		= 1,
 	HWSIM_TM_CMD_STOP_QUEUES	= 2,
 	HWSIM_TM_CMD_WAKE_QUEUES	= 3,
 };

 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
 	[HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
 	[HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
 };

 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
 				       struct ieee80211_vif *vif,
 				       void *data, int len)
 {
 	struct mac80211_hwsim_data *hwsim = hw->priv;
 	struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
 	struct sk_buff *skb;
 	int err, ps;

 	err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
 				   hwsim_testmode_policy, NULL);
 	if (err)
 		return err;

 	if (!tb[HWSIM_TM_ATTR_CMD])
 		return -EINVAL;

 	switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
 	case HWSIM_TM_CMD_SET_PS:
 		if (!tb[HWSIM_TM_ATTR_PS])
 			return -EINVAL;
 		ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
 		return hwsim_fops_ps_write(hwsim, ps);
 	case HWSIM_TM_CMD_GET_PS:
 		skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
 						nla_total_size(sizeof(u32)));
 		if (!skb)
 			return -ENOMEM;
 		if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
 			goto nla_put_failure;
 		return cfg80211_testmode_reply(skb);
 	case HWSIM_TM_CMD_STOP_QUEUES:
 		ieee80211_stop_queues(hw);
 		return 0;
 	case HWSIM_TM_CMD_WAKE_QUEUES:
 		ieee80211_wake_queues(hw);
 		return 0;
 	default:
 		return -EOPNOTSUPP;
 	}

  nla_put_failure:
 	kfree_skb(skb);
 	return -ENOBUFS;
 }
 #endif

 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
 				       struct ieee80211_vif *vif,
 				       struct ieee80211_ampdu_params *params)
 {
 	struct ieee80211_sta *sta = params->sta;
 	enum ieee80211_ampdu_mlme_action action = params->action;
 	u16 tid = params->tid;

 	switch (action) {
 	case IEEE80211_AMPDU_TX_START:
 		return IEEE80211_AMPDU_TX_START_IMMEDIATE;
 	case IEEE80211_AMPDU_TX_STOP_CONT:
 	case IEEE80211_AMPDU_TX_STOP_FLUSH:
 	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 		break;
 	case IEEE80211_AMPDU_TX_OPERATIONAL:
 		break;
 	case IEEE80211_AMPDU_RX_START:
 	case IEEE80211_AMPDU_RX_STOP:
 		break;
 	default:
 		return -EOPNOTSUPP;
 	}

 	return 0;
 }

 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
 				 struct ieee80211_vif *vif,
 				 u32 queues, bool drop)
 {
 	/* Not implemented, queues only on kernel side */
 }

 static void hw_scan_work(struct work_struct *work)
 {
 	struct mac80211_hwsim_data *hwsim =
 		container_of(work, struct mac80211_hwsim_data, hw_scan.work);
 	struct cfg80211_scan_request *req = hwsim->hw_scan_request;
 	int dwell, i;

 	mutex_lock(&hwsim->mutex);
 	if (hwsim->scan_chan_idx >= req->n_channels) {
 		struct cfg80211_scan_info info = {
 			.aborted = false,
 		};

 		wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
 		ieee80211_scan_completed(hwsim->hw, &info);
 		hwsim->hw_scan_request = NULL;
 		hwsim->hw_scan_vif = NULL;
 		hwsim->tmp_chan = NULL;
 		mutex_unlock(&hwsim->mutex);
 		mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
 					     false);
 		return;
 	}

 	wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
 		  req->channels[hwsim->scan_chan_idx]->center_freq);

 	hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
 	if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
 				      IEEE80211_CHAN_RADAR) ||
 	    !req->n_ssids) {
 		dwell = 120;
 	} else {
 		dwell = 30;
 		/* send probes */
 		for (i = 0; i < req->n_ssids; i++) {
 			struct sk_buff *probe;
 			struct ieee80211_mgmt *mgmt;

 			probe = ieee80211_probereq_get(hwsim->hw,
 						       hwsim->scan_addr,
 						       req->ssids[i].ssid,
 						       req->ssids[i].ssid_len,
 						       req->ie_len);
 			if (!probe)
 				continue;

 			mgmt = (struct ieee80211_mgmt *) probe->data;
 			memcpy(mgmt->da, req->bssid, ETH_ALEN);
 			memcpy(mgmt->bssid, req->bssid, ETH_ALEN);

 			if (req->ie_len)
 				skb_put_data(probe, req->ie, req->ie_len);

 			rcu_read_lock();
 			if (!ieee80211_tx_prepare_skb(hwsim->hw,
 						      hwsim->hw_scan_vif,
 						      probe,
 						      hwsim->tmp_chan->band,
 						      NULL)) {
 				rcu_read_unlock();
 				kfree_skb(probe);
 				continue;
 			}

 			local_bh_disable();
 			mac80211_hwsim_tx_frame(hwsim->hw, probe,
 						hwsim->tmp_chan);
 			rcu_read_unlock();
 			local_bh_enable();
 		}
 	}
 	ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
 				     msecs_to_jiffies(dwell));
 	hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
 	hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
 	hwsim->survey_data[hwsim->scan_chan_idx].end =
 		jiffies + msecs_to_jiffies(dwell);
 	hwsim->scan_chan_idx++;
 	mutex_unlock(&hwsim->mutex);
 }

 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
 				  struct ieee80211_vif *vif,
 				  struct ieee80211_scan_request *hw_req)
 {
 	struct mac80211_hwsim_data *hwsim = hw->priv;
 	struct cfg80211_scan_request *req = &hw_req->req;

 	mutex_lock(&hwsim->mutex);
 	if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
 		mutex_unlock(&hwsim->mutex);
 		return -EBUSY;
 	}
 	hwsim->hw_scan_request = req;
 	hwsim->hw_scan_vif = vif;
 	hwsim->scan_chan_idx = 0;
 	if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
 		get_random_mask_addr(hwsim->scan_addr,
 				     hw_req->req.mac_addr,
 				     hw_req->req.mac_addr_mask);
 	else
 		memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
 	memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
 	mutex_unlock(&hwsim->mutex);

 	mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
 	wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");

 	ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);

 	return 0;
 }

 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
 					  struct ieee80211_vif *vif)
 {
 	struct mac80211_hwsim_data *hwsim = hw->priv;
 	struct cfg80211_scan_info info = {
 		.aborted = true,
 	};

 	wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");

 	cancel_delayed_work_sync(&hwsim->hw_scan);

 	mutex_lock(&hwsim->mutex);
 	ieee80211_scan_completed(hwsim->hw, &info);
 	hwsim->tmp_chan = NULL;
 	hwsim->hw_scan_request = NULL;
 	hwsim->hw_scan_vif = NULL;
 	mutex_unlock(&hwsim->mutex);
 }

 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
 				   struct ieee80211_vif *vif,
 				   const u8 *mac_addr)
 {
 	struct mac80211_hwsim_data *hwsim = hw->priv;

 	mutex_lock(&hwsim->mutex);

 	if (hwsim->scanning) {
 		pr_debug("two hwsim sw_scans detected!\n");
 		goto out;
 	}

 	pr_debug("hwsim sw_scan request, prepping stuff\n");

 	memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
 	mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
 	hwsim->scanning = true;
 	memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));

 out:
 	mutex_unlock(&hwsim->mutex);
 }

 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
 					    struct ieee80211_vif *vif)
 {
 	struct mac80211_hwsim_data *hwsim = hw->priv;

 	mutex_lock(&hwsim->mutex);

 	pr_debug("hwsim sw_scan_complete\n");
 	hwsim->scanning = false;
 	mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
 	eth_zero_addr(hwsim->scan_addr);

 	mutex_unlock(&hwsim->mutex);
 }

 static void hw_roc_start(struct work_struct *work)
 {
 	struct mac80211_hwsim_data *hwsim =
 		container_of(work, struct mac80211_hwsim_data, roc_start.work);

 	mutex_lock(&hwsim->mutex);

 	wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
 	hwsim->tmp_chan = hwsim->roc_chan;
 	ieee80211_ready_on_channel(hwsim->hw);

 	ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
 				     msecs_to_jiffies(hwsim->roc_duration));

 	mutex_unlock(&hwsim->mutex);
 }

 static void hw_roc_done(struct work_struct *work)
 {
 	struct mac80211_hwsim_data *hwsim =
 		container_of(work, struct mac80211_hwsim_data, roc_done.work);

 	mutex_lock(&hwsim->mutex);
 	ieee80211_remain_on_channel_expired(hwsim->hw);
 	hwsim->tmp_chan = NULL;
 	mutex_unlock(&hwsim->mutex);

 	wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
 }

 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
 			      struct ieee80211_vif *vif,
 			      struct ieee80211_channel *chan,
 			      int duration,
 			      enum ieee80211_roc_type type)
 {
 	struct mac80211_hwsim_data *hwsim = hw->priv;

 	mutex_lock(&hwsim->mutex);
 	if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
 		mutex_unlock(&hwsim->mutex);
 		return -EBUSY;
 	}

 	hwsim->roc_chan = chan;
 	hwsim->roc_duration = duration;
 	mutex_unlock(&hwsim->mutex);

 	wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
 		  chan->center_freq, duration);
 	ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);

 	return 0;
 }

 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
 			       struct ieee80211_vif *vif)
 {
 	struct mac80211_hwsim_data *hwsim = hw->priv;

 	cancel_delayed_work_sync(&hwsim->roc_start);
 	cancel_delayed_work_sync(&hwsim->roc_done);

 	mutex_lock(&hwsim->mutex);
 	hwsim->tmp_chan = NULL;
 	mutex_unlock(&hwsim->mutex);

 	wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");

 	return 0;
 }

 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
 				      struct ieee80211_chanctx_conf *ctx)
 {
 	hwsim_set_chanctx_magic(ctx);
 	wiphy_dbg(hw->wiphy,
 		  "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
 		  ctx->def.chan->center_freq, ctx->def.width,
 		  ctx->def.center_freq1, ctx->def.center_freq2);
 	return 0;
 }

 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
 					  struct ieee80211_chanctx_conf *ctx)
 {
 	wiphy_dbg(hw->wiphy,
 		  "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
 		  ctx->def.chan->center_freq, ctx->def.width,
 		  ctx->def.center_freq1, ctx->def.center_freq2);
 	hwsim_check_chanctx_magic(ctx);
 	hwsim_clear_chanctx_magic(ctx);
 }

 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
 					  struct ieee80211_chanctx_conf *ctx,
 					  u32 changed)
 {
 	hwsim_check_chanctx_magic(ctx);
 	wiphy_dbg(hw->wiphy,
 		  "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
 		  ctx->def.chan->center_freq, ctx->def.width,
 		  ctx->def.center_freq1, ctx->def.center_freq2);
 }

 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
 					     struct ieee80211_vif *vif,
 					     struct ieee80211_bss_conf *link_conf,
 					     struct ieee80211_chanctx_conf *ctx)
 {
 	hwsim_check_magic(vif);
 	hwsim_check_chanctx_magic(ctx);

 	/* if we activate a link while already associated wake it up */
 	if (vif->type == NL80211_IFTYPE_STATION && vif->cfg.assoc) {
 		struct sk_buff *skb;

 		skb = ieee80211_nullfunc_get(hw, vif, link_conf->link_id, true);
 		if (skb) {
 			local_bh_disable();
 			mac80211_hwsim_tx_frame(hw, skb, ctx->def.chan);
 			local_bh_enable();
 		}
 	}

 	return 0;
 }

 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
 						struct ieee80211_vif *vif,
 						struct ieee80211_bss_conf *link_conf,
 						struct ieee80211_chanctx_conf *ctx)
 {
 	hwsim_check_magic(vif);
 	hwsim_check_chanctx_magic(ctx);

 	/* if we deactivate a link while associated suspend it first */
 	if (vif->type == NL80211_IFTYPE_STATION && vif->cfg.assoc) {
 		struct sk_buff *skb;

 		skb = ieee80211_nullfunc_get(hw, vif, link_conf->link_id, true);
 		if (skb) {
 			struct ieee80211_hdr *hdr = (void *)skb->data;

 			hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);

 			local_bh_disable();
 			mac80211_hwsim_tx_frame(hw, skb, ctx->def.chan);
 			local_bh_enable();
 		}
 	}
 }

 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
 	"tx_pkts_nic",
 	"tx_bytes_nic",
 	"rx_pkts_nic",
 	"rx_bytes_nic",
 	"d_tx_dropped",
 	"d_tx_failed",
 	"d_ps_mode",
 	"d_group",
 };

 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)

 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
 					  struct ieee80211_vif *vif,
 					  u32 sset, u8 *data)
 {
 	if (sset == ETH_SS_STATS)
 		memcpy(data, mac80211_hwsim_gstrings_stats,
 		       sizeof(mac80211_hwsim_gstrings_stats));
 }

 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
 					    struct ieee80211_vif *vif, int sset)
 {
 	if (sset == ETH_SS_STATS)
 		return MAC80211_HWSIM_SSTATS_LEN;
 	return 0;
 }

 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
 					struct ieee80211_vif *vif,
 					struct ethtool_stats *stats, u64 *data)
 {
 	struct mac80211_hwsim_data *ar = hw->priv;
 	int i = 0;

 	data[i++] = ar->tx_pkts;
 	data[i++] = ar->tx_bytes;
 	data[i++] = ar->rx_pkts;
 	data[i++] = ar->rx_bytes;
 	data[i++] = ar->tx_dropped;
 	data[i++] = ar->tx_failed;
 	data[i++] = ar->ps;
 	data[i++] = ar->group;

 	WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
 }

 static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
 {
 	return 1;
 }

 static int mac80211_hwsim_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 {
 	return -EOPNOTSUPP;
 }

 static int mac80211_hwsim_change_vif_links(struct ieee80211_hw *hw,
 					   struct ieee80211_vif *vif,
 					   u16 old_links, u16 new_links,
 					   struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS])
 {
 	unsigned long rem = old_links & ~new_links;
 	unsigned long add = new_links & ~old_links;
 	int i;

 	if (!old_links)
 		rem |= BIT(0);
 	if (!new_links)
 		add |= BIT(0);

 	for_each_set_bit(i, &rem, IEEE80211_MLD_MAX_NUM_LINKS)
 		mac80211_hwsim_config_mac_nl(hw, old[i]->addr, false);

 	for_each_set_bit(i, &add, IEEE80211_MLD_MAX_NUM_LINKS) {
 		struct ieee80211_bss_conf *link_conf;

 		link_conf = link_conf_dereference_protected(vif, i);
 		if (WARN_ON(!link_conf))
 			continue;

 		mac80211_hwsim_config_mac_nl(hw, link_conf->addr, true);
 	}

 	return 0;
 }

 static int mac80211_hwsim_change_sta_links(struct ieee80211_hw *hw,
 					   struct ieee80211_vif *vif,
 					   struct ieee80211_sta *sta,
 					   u16 old_links, u16 new_links)
 {
 	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;

 	hwsim_check_sta_magic(sta);

 	if (vif->type == NL80211_IFTYPE_STATION)
 		sp->active_links_rx = new_links;

 	return 0;
 }

 #define HWSIM_COMMON_OPS					\
 	.tx = mac80211_hwsim_tx,				\
 	.start = mac80211_hwsim_start,				\
 	.stop = mac80211_hwsim_stop,				\
 	.add_interface = mac80211_hwsim_add_interface,		\
 	.change_interface = mac80211_hwsim_change_interface,	\
 	.remove_interface = mac80211_hwsim_remove_interface,	\
 	.config = mac80211_hwsim_config,			\
 	.configure_filter = mac80211_hwsim_configure_filter,	\
 	.vif_cfg_changed = mac80211_hwsim_vif_info_changed,	\
 	.link_info_changed = mac80211_hwsim_link_info_changed,  \
 	.tx_last_beacon = mac80211_hwsim_tx_last_beacon,	\
 	.sta_notify = mac80211_hwsim_sta_notify,		\
 	.sta_rc_update = mac80211_hwsim_sta_rc_update,		\
 	.conf_tx = mac80211_hwsim_conf_tx,			\
 	.get_survey = mac80211_hwsim_get_survey,		\
 	CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)	\
 	.ampdu_action = mac80211_hwsim_ampdu_action,		\
 	.flush = mac80211_hwsim_flush,				\
 	.get_et_sset_count = mac80211_hwsim_get_et_sset_count,	\
 	.get_et_stats = mac80211_hwsim_get_et_stats,		\
 	.get_et_strings = mac80211_hwsim_get_et_strings,

 #define HWSIM_NON_MLO_OPS					\
 	.sta_add = mac80211_hwsim_sta_add,			\
 	.sta_remove = mac80211_hwsim_sta_remove,		\
 	.set_tim = mac80211_hwsim_set_tim,			\
 	.get_tsf = mac80211_hwsim_get_tsf,			\
 	.set_tsf = mac80211_hwsim_set_tsf,

 static const struct ieee80211_ops mac80211_hwsim_ops = {
 	HWSIM_COMMON_OPS
 	HWSIM_NON_MLO_OPS
 	.sw_scan_start = mac80211_hwsim_sw_scan,
 	.sw_scan_complete = mac80211_hwsim_sw_scan_complete,
 };

 #define HWSIM_CHANCTX_OPS					\
 	.hw_scan = mac80211_hwsim_hw_scan,			\
 	.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,	\
 	.remain_on_channel = mac80211_hwsim_roc,		\
 	.cancel_remain_on_channel = mac80211_hwsim_croc,	\
 	.add_chanctx = mac80211_hwsim_add_chanctx,		\
 	.remove_chanctx = mac80211_hwsim_remove_chanctx,	\
 	.change_chanctx = mac80211_hwsim_change_chanctx,	\
 	.assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,\
 	.unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,

 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
 	HWSIM_COMMON_OPS
 	HWSIM_NON_MLO_OPS
 	HWSIM_CHANCTX_OPS
 };

 static const struct ieee80211_ops mac80211_hwsim_mlo_ops = {
 	HWSIM_COMMON_OPS
 	HWSIM_CHANCTX_OPS
 	.set_rts_threshold = mac80211_hwsim_set_rts_threshold,
 	.change_vif_links = mac80211_hwsim_change_vif_links,
 	.change_sta_links = mac80211_hwsim_change_sta_links,
 	.sta_state = mac80211_hwsim_sta_state,
 };

 struct hwsim_new_radio_params {
 	unsigned int channels;
 	const char *reg_alpha2;
 	const struct ieee80211_regdomain *regd;
 	bool reg_strict;
 	bool p2p_device;
 	bool use_chanctx;
 	bool destroy_on_close;
 	const char *hwname;
 	bool no_vif;
 	const u8 *perm_addr;
 	u32 iftypes;
 	u32 *ciphers;
 	u8 n_ciphers;
 	bool mlo;
 };

 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
 				   struct genl_info *info)
 {
 	if (info)
 		genl_notify(&hwsim_genl_family, mcast_skb, info,
 			    HWSIM_MCGRP_CONFIG, GFP_KERNEL);
 	else
 		genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
 				  HWSIM_MCGRP_CONFIG, GFP_KERNEL);
 }

 static int append_radio_msg(struct sk_buff *skb, int id,
 			    struct hwsim_new_radio_params *param)
 {
 	int ret;

 	ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
 	if (ret < 0)
 		return ret;

 	if (param->channels) {
 		ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
 		if (ret < 0)
 			return ret;
 	}

 	if (param->reg_alpha2) {
 		ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
 			      param->reg_alpha2);
 		if (ret < 0)
 			return ret;
 	}

 	if (param->regd) {
 		int i;

 		for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
 			if (hwsim_world_regdom_custom[i] != param->regd)
 				continue;

 			ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
 			if (ret < 0)
 				return ret;
 			break;
 		}
 	}

 	if (param->reg_strict) {
 		ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
 		if (ret < 0)
 			return ret;
 	}

 	if (param->p2p_device) {
 		ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
 		if (ret < 0)
 			return ret;
 	}

 	if (param->use_chanctx) {
 		ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
 		if (ret < 0)
 			return ret;
 	}

 	if (param->hwname) {
 		ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
 			      strlen(param->hwname), param->hwname);
 		if (ret < 0)
 			return ret;
 	}

 	return 0;
 }

 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
 				  struct hwsim_new_radio_params *param)
 {
 	struct sk_buff *mcast_skb;
 	void *data;

 	mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
 	if (!mcast_skb)
 		return;

 	data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
 			   HWSIM_CMD_NEW_RADIO);
 	if (!data)
 		goto out_err;

 	if (append_radio_msg(mcast_skb, id, param) < 0)
 		goto out_err;

 	genlmsg_end(mcast_skb, data);

 	hwsim_mcast_config_msg(mcast_skb, info);
 	return;

 out_err:
 	nlmsg_free(mcast_skb);
 }

 static const struct ieee80211_sband_iftype_data sband_capa_2ghz[] = {
 	{
 		.types_mask = BIT(NL80211_IFTYPE_STATION),
 		.he_cap = {
 			.has_he = true,
 			.he_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_HE_MAC_CAP0_HTC_HE,
 				.mac_cap_info[1] =
 					IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
 					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
 				.mac_cap_info[2] =
 					IEEE80211_HE_MAC_CAP2_BSR |
 					IEEE80211_HE_MAC_CAP2_MU_CASCADING |
 					IEEE80211_HE_MAC_CAP2_ACK_EN,
 				.mac_cap_info[3] =
 					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
 					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
 				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
 				.phy_cap_info[1] =
 					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
 					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
 					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
 					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
 				.phy_cap_info[2] =
 					IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
 					IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
 					IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,

 				/* Leave all the other PHY capability bytes
 				 * unset, as DCM, beam forming, RU and PPE
 				 * threshold information are not supported
 				 */
 			},
 			.he_mcs_nss_supp = {
 				.rx_mcs_80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80 = cpu_to_le16(0xfffa),
 				.rx_mcs_160 = cpu_to_le16(0xffff),
 				.tx_mcs_160 = cpu_to_le16(0xffff),
 				.rx_mcs_80p80 = cpu_to_le16(0xffff),
 				.tx_mcs_80p80 = cpu_to_le16(0xffff),
 			},
 		},
 		.eht_cap = {
 			.has_eht = true,
 			.eht_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS |
 					IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
 					IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
 				.phy_cap_info[0] =
 					IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
 					IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
 					IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE,
 				.phy_cap_info[3] =
 					IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
 				.phy_cap_info[4] =
 					IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
 					IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
 					IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
 					IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
 				.phy_cap_info[5] =
 					IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
 					IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
 					IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
 				.phy_cap_info[6] =
 					IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
 					IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
 				.phy_cap_info[7] =
 					IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW,
 			},

 			/* For all MCS and bandwidth, set 8 NSS for both Tx and
 			 * Rx
 			 */
 			.eht_mcs_nss_supp = {
 				/*
 				 * Since B0, B1, B2 and B3 are not set in
 				 * the supported channel width set field in the
 				 * HE PHY capabilities information field the
 				 * device is a 20MHz only device on 2.4GHz band.
 				 */
 				.only_20mhz = {
 					.rx_tx_mcs7_max_nss = 0x88,
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 			},
 			/* PPE threshold information is not supported */
 		},
 	},
 	{
 		.types_mask = BIT(NL80211_IFTYPE_AP),
 		.he_cap = {
 			.has_he = true,
 			.he_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_HE_MAC_CAP0_HTC_HE,
 				.mac_cap_info[1] =
 					IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
 					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
 				.mac_cap_info[2] =
 					IEEE80211_HE_MAC_CAP2_BSR |
 					IEEE80211_HE_MAC_CAP2_MU_CASCADING |
 					IEEE80211_HE_MAC_CAP2_ACK_EN,
 				.mac_cap_info[3] =
 					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
 					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
 				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
 				.phy_cap_info[1] =
 					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
 					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
 					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
 					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
 				.phy_cap_info[2] =
 					IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
 					IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
 					IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,

 				/* Leave all the other PHY capability bytes
 				 * unset, as DCM, beam forming, RU and PPE
 				 * threshold information are not supported
 				 */
 			},
 			.he_mcs_nss_supp = {
 				.rx_mcs_80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80 = cpu_to_le16(0xfffa),
 				.rx_mcs_160 = cpu_to_le16(0xffff),
 				.tx_mcs_160 = cpu_to_le16(0xffff),
 				.rx_mcs_80p80 = cpu_to_le16(0xffff),
 				.tx_mcs_80p80 = cpu_to_le16(0xffff),
 			},
 		},
 		.eht_cap = {
 			.has_eht = true,
 			.eht_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS |
 					IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
 					IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
 				.phy_cap_info[0] =
 					IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
 					IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
 					IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE,
 				.phy_cap_info[3] =
 					IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
 				.phy_cap_info[4] =
 					IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
 					IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
 					IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
 					IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
 				.phy_cap_info[5] =
 					IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
 					IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
 					IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
 				.phy_cap_info[6] =
 					IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
 					IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
 				.phy_cap_info[7] =
 					IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW,
 			},

 			/* For all MCS and bandwidth, set 8 NSS for both Tx and
 			 * Rx
 			 */
 			.eht_mcs_nss_supp = {
 				/*
 				 * Since B0, B1, B2 and B3 are not set in
 				 * the supported channel width set field in the
 				 * HE PHY capabilities information field the
 				 * device is a 20MHz only device on 2.4GHz band.
 				 */
 				.only_20mhz = {
 					.rx_tx_mcs7_max_nss = 0x88,
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 			},
 			/* PPE threshold information is not supported */
 		},
 	},
 #ifdef CONFIG_MAC80211_MESH
 	{
 		.types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
 		.he_cap = {
 			.has_he = true,
 			.he_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_HE_MAC_CAP0_HTC_HE,
 				.mac_cap_info[1] =
 					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
 				.mac_cap_info[2] =
 					IEEE80211_HE_MAC_CAP2_ACK_EN,
 				.mac_cap_info[3] =
 					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
 					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
 				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
 				.phy_cap_info[1] =
 					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
 					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
 					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
 					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
 				.phy_cap_info[2] = 0,

 				/* Leave all the other PHY capability bytes
 				 * unset, as DCM, beam forming, RU and PPE
 				 * threshold information are not supported
 				 */
 			},
 			.he_mcs_nss_supp = {
 				.rx_mcs_80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80 = cpu_to_le16(0xfffa),
 				.rx_mcs_160 = cpu_to_le16(0xffff),
 				.tx_mcs_160 = cpu_to_le16(0xffff),
 				.rx_mcs_80p80 = cpu_to_le16(0xffff),
 				.tx_mcs_80p80 = cpu_to_le16(0xffff),
 			},
 		},
 	},
 #endif
 };

 static const struct ieee80211_sband_iftype_data sband_capa_5ghz[] = {
 	{
 		/* TODO: should we support other types, e.g., P2P? */
 		.types_mask = BIT(NL80211_IFTYPE_STATION),
 		.he_cap = {
 			.has_he = true,
 			.he_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_HE_MAC_CAP0_HTC_HE,
 				.mac_cap_info[1] =
 					IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
 					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
 				.mac_cap_info[2] =
 					IEEE80211_HE_MAC_CAP2_BSR |
 					IEEE80211_HE_MAC_CAP2_MU_CASCADING |
 					IEEE80211_HE_MAC_CAP2_ACK_EN,
 				.mac_cap_info[3] =
 					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
 					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
 				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
 				.phy_cap_info[0] =
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
 				.phy_cap_info[1] =
 					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
 					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
 					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
 					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
 				.phy_cap_info[2] =
 					IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
 					IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
 					IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,

 				/* Leave all the other PHY capability bytes
 				 * unset, as DCM, beam forming, RU and PPE
 				 * threshold information are not supported
 				 */
 			},
 			.he_mcs_nss_supp = {
 				.rx_mcs_80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80 = cpu_to_le16(0xfffa),
 				.rx_mcs_160 = cpu_to_le16(0xfffa),
 				.tx_mcs_160 = cpu_to_le16(0xfffa),
 				.rx_mcs_80p80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80p80 = cpu_to_le16(0xfffa),
 			},
 		},
 		.eht_cap = {
 			.has_eht = true,
 			.eht_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS |
 					IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
 					IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
 				.phy_cap_info[0] =
 					IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
 					IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
 					IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
 					IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
 				.phy_cap_info[1] =
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK,
 				.phy_cap_info[2] =
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK,
 				.phy_cap_info[3] =
 					IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
 				.phy_cap_info[4] =
 					IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
 					IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
 					IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
 					IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
 				.phy_cap_info[5] =
 					IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
 					IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
 					IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
 				.phy_cap_info[6] =
 					IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
 					IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
 				.phy_cap_info[7] =
 					IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ,
 			},

 			/* For all MCS and bandwidth, set 8 NSS for both Tx and
 			 * Rx
 			 */
 			.eht_mcs_nss_supp = {
 				/*
 				 * As B1 and B2 are set in the supported
 				 * channel width set field in the HE PHY
 				 * capabilities information field include all
 				 * the following MCS/NSS.
 				 */
 				.bw._80 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 				.bw._160 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 			},
 			/* PPE threshold information is not supported */
 		},
 	},
 	{
 		.types_mask = BIT(NL80211_IFTYPE_AP),
 		.he_cap = {
 			.has_he = true,
 			.he_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_HE_MAC_CAP0_HTC_HE,
 				.mac_cap_info[1] =
 					IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
 					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
 				.mac_cap_info[2] =
 					IEEE80211_HE_MAC_CAP2_BSR |
 					IEEE80211_HE_MAC_CAP2_MU_CASCADING |
 					IEEE80211_HE_MAC_CAP2_ACK_EN,
 				.mac_cap_info[3] =
 					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
 					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
 				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
 				.phy_cap_info[0] =
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
 				.phy_cap_info[1] =
 					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
 					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
 					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
 					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
 				.phy_cap_info[2] =
 					IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
 					IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
 					IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,

 				/* Leave all the other PHY capability bytes
 				 * unset, as DCM, beam forming, RU and PPE
 				 * threshold information are not supported
 				 */
 			},
 			.he_mcs_nss_supp = {
 				.rx_mcs_80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80 = cpu_to_le16(0xfffa),
 				.rx_mcs_160 = cpu_to_le16(0xfffa),
 				.tx_mcs_160 = cpu_to_le16(0xfffa),
 				.rx_mcs_80p80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80p80 = cpu_to_le16(0xfffa),
 			},
 		},
 		.eht_cap = {
 			.has_eht = true,
 			.eht_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS |
 					IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
 					IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
 				.phy_cap_info[0] =
 					IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
 					IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
 					IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
 					IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
 				.phy_cap_info[1] =
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK,
 				.phy_cap_info[2] =
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK,
 				.phy_cap_info[3] =
 					IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
 				.phy_cap_info[4] =
 					IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
 					IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
 					IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
 					IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
 				.phy_cap_info[5] =
 					IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
 					IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
 					IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
 				.phy_cap_info[6] =
 					IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
 					IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
 				.phy_cap_info[7] =
 					IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ,
 			},

 			/* For all MCS and bandwidth, set 8 NSS for both Tx and
 			 * Rx
 			 */
 			.eht_mcs_nss_supp = {
 				/*
 				 * As B1 and B2 are set in the supported
 				 * channel width set field in the HE PHY
 				 * capabilities information field include all
 				 * the following MCS/NSS.
 				 */
 				.bw._80 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 				.bw._160 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 			},
 			/* PPE threshold information is not supported */
 		},
 	},
 #ifdef CONFIG_MAC80211_MESH
 	{
 		/* TODO: should we support other types, e.g., IBSS?*/
 		.types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
 		.he_cap = {
 			.has_he = true,
 			.he_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_HE_MAC_CAP0_HTC_HE,
 				.mac_cap_info[1] =
 					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
 				.mac_cap_info[2] =
 					IEEE80211_HE_MAC_CAP2_ACK_EN,
 				.mac_cap_info[3] =
 					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
 					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
 				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
 				.phy_cap_info[0] =
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
 				.phy_cap_info[1] =
 					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
 					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
 					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
 					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
 				.phy_cap_info[2] = 0,

 				/* Leave all the other PHY capability bytes
 				 * unset, as DCM, beam forming, RU and PPE
 				 * threshold information are not supported
 				 */
 			},
 			.he_mcs_nss_supp = {
 				.rx_mcs_80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80 = cpu_to_le16(0xfffa),
 				.rx_mcs_160 = cpu_to_le16(0xfffa),
 				.tx_mcs_160 = cpu_to_le16(0xfffa),
 				.rx_mcs_80p80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80p80 = cpu_to_le16(0xfffa),
 			},
 		},
 	},
 #endif
 };

 static const struct ieee80211_sband_iftype_data sband_capa_6ghz[] = {
 	{
 		/* TODO: should we support other types, e.g., P2P? */
 		.types_mask = BIT(NL80211_IFTYPE_STATION),
 		.he_6ghz_capa = {
 			.capa = cpu_to_le16(IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START |
 					    IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP |
 					    IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN |
 					    IEEE80211_HE_6GHZ_CAP_SM_PS |
 					    IEEE80211_HE_6GHZ_CAP_RD_RESPONDER |
 					    IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
 					    IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS),
 		},
 		.he_cap = {
 			.has_he = true,
 			.he_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_HE_MAC_CAP0_HTC_HE,
 				.mac_cap_info[1] =
 					IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
 					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
 				.mac_cap_info[2] =
 					IEEE80211_HE_MAC_CAP2_BSR |
 					IEEE80211_HE_MAC_CAP2_MU_CASCADING |
 					IEEE80211_HE_MAC_CAP2_ACK_EN,
 				.mac_cap_info[3] =
 					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
 					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
 				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
 				.phy_cap_info[0] =
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
 				.phy_cap_info[1] =
 					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
 					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
 					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
 					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
 				.phy_cap_info[2] =
 					IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
 					IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
 					IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,

 				/* Leave all the other PHY capability bytes
 				 * unset, as DCM, beam forming, RU and PPE
 				 * threshold information are not supported
 				 */
 			},
 			.he_mcs_nss_supp = {
 				.rx_mcs_80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80 = cpu_to_le16(0xfffa),
 				.rx_mcs_160 = cpu_to_le16(0xfffa),
 				.tx_mcs_160 = cpu_to_le16(0xfffa),
 				.rx_mcs_80p80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80p80 = cpu_to_le16(0xfffa),
 			},
 		},
 		.eht_cap = {
 			.has_eht = true,
 			.eht_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS |
 					IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
 					IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
 				.phy_cap_info[0] =
 					IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ |
 					IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
 					IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
 					IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
 					IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
 				.phy_cap_info[1] =
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK,
 				.phy_cap_info[2] =
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK,
 				.phy_cap_info[3] =
 					IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
 				.phy_cap_info[4] =
 					IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
 					IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
 					IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
 					IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
 				.phy_cap_info[5] =
 					IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
 					IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
 					IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
 				.phy_cap_info[6] =
 					IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
 					IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK |
 					IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP,
 				.phy_cap_info[7] =
 					IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ,
 			},

 			/* For all MCS and bandwidth, set 8 NSS for both Tx and
 			 * Rx
 			 */
 			.eht_mcs_nss_supp = {
 				/*
 				 * As B1 and B2 are set in the supported
 				 * channel width set field in the HE PHY
 				 * capabilities information field and 320MHz in
 				 * 6GHz is supported include all the following
 				 * MCS/NSS.
 				 */
 				.bw._80 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 				.bw._160 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 				.bw._320 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 			},
 			/* PPE threshold information is not supported */
 		},
 	},
 	{
 		.types_mask = BIT(NL80211_IFTYPE_AP),
 		.he_6ghz_capa = {
 			.capa = cpu_to_le16(IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START |
 					    IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP |
 					    IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN |
 					    IEEE80211_HE_6GHZ_CAP_SM_PS |
 					    IEEE80211_HE_6GHZ_CAP_RD_RESPONDER |
 					    IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
 					    IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS),
 		},
 		.he_cap = {
 			.has_he = true,
 			.he_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_HE_MAC_CAP0_HTC_HE,
 				.mac_cap_info[1] =
 					IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
 					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
 				.mac_cap_info[2] =
 					IEEE80211_HE_MAC_CAP2_BSR |
 					IEEE80211_HE_MAC_CAP2_MU_CASCADING |
 					IEEE80211_HE_MAC_CAP2_ACK_EN,
 				.mac_cap_info[3] =
 					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
 					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
 				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
 				.phy_cap_info[0] =
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
 				.phy_cap_info[1] =
 					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
 					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
 					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
 					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
 				.phy_cap_info[2] =
 					IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
 					IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
 					IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
 					IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,

 				/* Leave all the other PHY capability bytes
 				 * unset, as DCM, beam forming, RU and PPE
 				 * threshold information are not supported
 				 */
 			},
 			.he_mcs_nss_supp = {
 				.rx_mcs_80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80 = cpu_to_le16(0xfffa),
 				.rx_mcs_160 = cpu_to_le16(0xfffa),
 				.tx_mcs_160 = cpu_to_le16(0xfffa),
 				.rx_mcs_80p80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80p80 = cpu_to_le16(0xfffa),
 			},
 		},
 		.eht_cap = {
 			.has_eht = true,
 			.eht_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS |
 					IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
 					IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
 				.phy_cap_info[0] =
 					IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ |
 					IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
 					IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
 					IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
 					IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
 					IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
 				.phy_cap_info[1] =
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK,
 				.phy_cap_info[2] =
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK |
 					IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK,
 				.phy_cap_info[3] =
 					IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
 					IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
 				.phy_cap_info[4] =
 					IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
 					IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
 					IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
 					IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
 					IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
 				.phy_cap_info[5] =
 					IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
 					IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
 					IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
 					IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
 					IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
 				.phy_cap_info[6] =
 					IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
 					IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK |
 					IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP,
 				.phy_cap_info[7] =
 					IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
 					IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
 					IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ,
 			},

 			/* For all MCS and bandwidth, set 8 NSS for both Tx and
 			 * Rx
 			 */
 			.eht_mcs_nss_supp = {
 				/*
 				 * As B1 and B2 are set in the supported
 				 * channel width set field in the HE PHY
 				 * capabilities information field and 320MHz in
 				 * 6GHz is supported include all the following
 				 * MCS/NSS.
 				 */
 				.bw._80 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 				.bw._160 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 				.bw._320 = {
 					.rx_tx_mcs9_max_nss = 0x88,
 					.rx_tx_mcs11_max_nss = 0x88,
 					.rx_tx_mcs13_max_nss = 0x88,
 				},
 			},
 			/* PPE threshold information is not supported */
 		},
 	},
 #ifdef CONFIG_MAC80211_MESH
 	{
 		/* TODO: should we support other types, e.g., IBSS?*/
 		.types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
 		.he_6ghz_capa = {
 			.capa = cpu_to_le16(IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START |
 					    IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP |
 					    IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN |
 					    IEEE80211_HE_6GHZ_CAP_SM_PS |
 					    IEEE80211_HE_6GHZ_CAP_RD_RESPONDER |
 					    IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
 					    IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS),
 		},
 		.he_cap = {
 			.has_he = true,
 			.he_cap_elem = {
 				.mac_cap_info[0] =
 					IEEE80211_HE_MAC_CAP0_HTC_HE,
 				.mac_cap_info[1] =
 					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
 				.mac_cap_info[2] =
 					IEEE80211_HE_MAC_CAP2_ACK_EN,
 				.mac_cap_info[3] =
 					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
 					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
 				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
 				.phy_cap_info[0] =
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
 				.phy_cap_info[1] =
 					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
 					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
 					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
 					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
 				.phy_cap_info[2] = 0,

 				/* Leave all the other PHY capability bytes
 				 * unset, as DCM, beam forming, RU and PPE
 				 * threshold information are not supported
 				 */
 			},
 			.he_mcs_nss_supp = {
 				.rx_mcs_80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80 = cpu_to_le16(0xfffa),
 				.rx_mcs_160 = cpu_to_le16(0xfffa),
 				.tx_mcs_160 = cpu_to_le16(0xfffa),
 				.rx_mcs_80p80 = cpu_to_le16(0xfffa),
 				.tx_mcs_80p80 = cpu_to_le16(0xfffa),
 			},
 		},
 	},
 #endif
 };

 static void mac80211_hwsim_sband_capab(struct ieee80211_supported_band *sband)
 {
 	u16 n_iftype_data;

 	if (sband->band == NL80211_BAND_2GHZ) {
 		n_iftype_data = ARRAY_SIZE(sband_capa_2ghz);
 		sband->iftype_data =
 			(struct ieee80211_sband_iftype_data *)sband_capa_2ghz;
 	} else if (sband->band == NL80211_BAND_5GHZ) {
 		n_iftype_data = ARRAY_SIZE(sband_capa_5ghz);
 		sband->iftype_data =
 			(struct ieee80211_sband_iftype_data *)sband_capa_5ghz;
 	} else if (sband->band == NL80211_BAND_6GHZ) {
 		n_iftype_data = ARRAY_SIZE(sband_capa_6ghz);
 		sband->iftype_data =
 			(struct ieee80211_sband_iftype_data *)sband_capa_6ghz;
 	} else {
 		return;
 	}

 	sband->n_iftype_data = n_iftype_data;
 }

 #ifdef CONFIG_MAC80211_MESH
 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
 #else
 #define HWSIM_MESH_BIT 0
 #endif

 #define HWSIM_DEFAULT_IF_LIMIT \
 	(BIT(NL80211_IFTYPE_STATION) | \
 	 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
 	 BIT(NL80211_IFTYPE_AP) | \
 	 BIT(NL80211_IFTYPE_P2P_GO) | \
 	 HWSIM_MESH_BIT)

 #define HWSIM_IFTYPE_SUPPORT_MASK \
 	(BIT(NL80211_IFTYPE_STATION) | \
 	 BIT(NL80211_IFTYPE_AP) | \
 	 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
 	 BIT(NL80211_IFTYPE_P2P_GO) | \
 	 BIT(NL80211_IFTYPE_ADHOC) | \
 	 BIT(NL80211_IFTYPE_MESH_POINT) | \
 	 BIT(NL80211_IFTYPE_OCB))

 static int mac80211_hwsim_new_radio(struct genl_info *info,
 				    struct hwsim_new_radio_params *param)
 {
 	int err;
 	u8 addr[ETH_ALEN];
 	struct mac80211_hwsim_data *data;
 	struct ieee80211_hw *hw;
 	enum nl80211_band band;
 	const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
 	struct net *net;
 	int idx, i;
 	int n_limits = 0;

 	if (WARN_ON(param->channels > 1 && !param->use_chanctx))
 		return -EINVAL;

 	spin_lock_bh(&hwsim_radio_lock);
 	idx = hwsim_radio_idx++;
 	spin_unlock_bh(&hwsim_radio_lock);

 	if (param->mlo)
 		ops = &mac80211_hwsim_mlo_ops;
 	else if (param->use_chanctx)
 		ops = &mac80211_hwsim_mchan_ops;
 	hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
 	if (!hw) {
 		pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
 		err = -ENOMEM;
 		goto failed;
 	}

 	/* ieee80211_alloc_hw_nm may have used a default name */
 	param->hwname = wiphy_name(hw->wiphy);

 	if (info)
 		net = genl_info_net(info);
 	else
 		net = &init_net;
 	wiphy_net_set(hw->wiphy, net);

 	data = hw->priv;
 	data->hw = hw;

 	data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
 	if (IS_ERR(data->dev)) {
 		printk(KERN_DEBUG
 		       "mac80211_hwsim: device_create failed (%ld)\n",
 		       PTR_ERR(data->dev));
 		err = -ENOMEM;
 		goto failed_drvdata;
 	}
 	data->dev->driver = &mac80211_hwsim_driver.driver;
 	err = device_bind_driver(data->dev);
 	if (err != 0) {
 		pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
 		       err);
 		goto failed_bind;
 	}

 	skb_queue_head_init(&data->pending);

 	SET_IEEE80211_DEV(hw, data->dev);
 	if (!param->perm_addr) {
 		eth_zero_addr(addr);
 		addr[0] = 0x02;
 		addr[3] = idx >> 8;
 		addr[4] = idx;
 		memcpy(data->addresses[0].addr, addr, ETH_ALEN);
 		/* Why need here second address ? */
 		memcpy(data->addresses[1].addr, addr, ETH_ALEN);
 		data->addresses[1].addr[0] |= 0x40;
 		hw->wiphy->n_addresses = 2;
 		hw->wiphy->addresses = data->addresses;
 		/* possible address clash is checked at hash table insertion */
 	} else {
 		memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
 		/* compatibility with automatically generated mac addr */
 		memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
 		hw->wiphy->n_addresses = 2;
 		hw->wiphy->addresses = data->addresses;
 	}

 	data->channels = param->channels;
 	data->use_chanctx = param->use_chanctx;
 	data->idx = idx;
 	data->destroy_on_close = param->destroy_on_close;
 	if (info)
 		data->portid = info->snd_portid;

 	/* setup interface limits, only on interface types we support */
 	if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
 		data->if_limits[n_limits].max = 1;
 		data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
 		n_limits++;
 	}

 	if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
 		data->if_limits[n_limits].max = 2048;
 		/*
 		 * For this case, we may only support a subset of
 		 * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
 		 * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
 		 */
 		data->if_limits[n_limits].types =
 					HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
 		n_limits++;
 	}

 	if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
 		data->if_limits[n_limits].max = 1;
 		data->if_limits[n_limits].types =
 						BIT(NL80211_IFTYPE_P2P_DEVICE);
 		n_limits++;
 	}

 	if (data->use_chanctx) {
 		hw->wiphy->max_scan_ssids = 255;
 		hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
 		hw->wiphy->max_remain_on_channel_duration = 1000;
 		data->if_combination.radar_detect_widths = 0;
 		data->if_combination.num_different_channels = data->channels;
 	} else {
 		data->if_combination.num_different_channels = 1;
 		data->if_combination.radar_detect_widths =
 					BIT(NL80211_CHAN_WIDTH_5) |
 					BIT(NL80211_CHAN_WIDTH_10) |
 					BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 					BIT(NL80211_CHAN_WIDTH_20) |
 					BIT(NL80211_CHAN_WIDTH_40) |
 					BIT(NL80211_CHAN_WIDTH_80) |
 					BIT(NL80211_CHAN_WIDTH_160);
 	}

 	if (!n_limits) {
 		err = -EINVAL;
 		goto failed_hw;
 	}

 	data->if_combination.max_interfaces = 0;
 	for (i = 0; i < n_limits; i++)
 		data->if_combination.max_interfaces +=
 			data->if_limits[i].max;

 	data->if_combination.n_limits = n_limits;
 	data->if_combination.limits = data->if_limits;

 	/*
 	 * If we actually were asked to support combinations,
 	 * advertise them - if there's only a single thing like
 	 * only IBSS then don't advertise it as combinations.
 	 */
 	if (data->if_combination.max_interfaces > 1) {
 		hw->wiphy->iface_combinations = &data->if_combination;
 		hw->wiphy->n_iface_combinations = 1;
 	}

 	if (param->ciphers) {
 		memcpy(data->ciphers, param->ciphers,
 		       param->n_ciphers * sizeof(u32));
 		hw->wiphy->cipher_suites = data->ciphers;
 		hw->wiphy->n_cipher_suites = param->n_ciphers;
 	}

 	data->rx_rssi = DEFAULT_RX_RSSI;

 	INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
 	INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
 	INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);

 	hw->queues = 5;
 	hw->offchannel_tx_hw_queue = 4;

 	ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 	ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 	ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
 	ieee80211_hw_set(hw, QUEUE_CONTROL);
 	ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 	ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 	ieee80211_hw_set(hw, MFP_CAPABLE);
 	ieee80211_hw_set(hw, SIGNAL_DBM);
 	ieee80211_hw_set(hw, SUPPORTS_PS);
 	ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 	ieee80211_hw_set(hw, TDLS_WIDER_BW);
 	ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);

 	if (param->mlo) {
 		hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_MLO;
 		ieee80211_hw_set(hw, HAS_RATE_CONTROL);
 		ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 		ieee80211_hw_set(hw, CONNECTION_MONITOR);
 		ieee80211_hw_set(hw, AP_LINK_PS);
 	} else {
 		ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
 		ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
 		if (rctbl)
 			ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
 	}

 	hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 	hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
 			    WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
 			    WIPHY_FLAG_AP_UAPSD |
 			    WIPHY_FLAG_SUPPORTS_5_10_MHZ |
 			    WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 	hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
 			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 			       NL80211_FEATURE_STATIC_SMPS |
 			       NL80211_FEATURE_DYNAMIC_SMPS |
 			       NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
 	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
 	wiphy_ext_feature_set(hw->wiphy,
 			      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
 	wiphy_ext_feature_set(hw->wiphy,
 			      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);

 	hw->wiphy->interface_modes = param->iftypes;

 	/* ask mac80211 to reserve space for magic */
 	hw->vif_data_size = sizeof(struct hwsim_vif_priv);
 	hw->sta_data_size = sizeof(struct hwsim_sta_priv);
 	hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);

 	memcpy(data->channels_2ghz, hwsim_channels_2ghz,
 		sizeof(hwsim_channels_2ghz));
 	memcpy(data->channels_5ghz, hwsim_channels_5ghz,
 		sizeof(hwsim_channels_5ghz));
 	memcpy(data->channels_6ghz, hwsim_channels_6ghz,
 		sizeof(hwsim_channels_6ghz));
 	memcpy(data->channels_s1g, hwsim_channels_s1g,
 	       sizeof(hwsim_channels_s1g));
 	memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));

 	for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
 		struct ieee80211_supported_band *sband = &data->bands[band];

 		sband->band = band;

 		switch (band) {
 		case NL80211_BAND_2GHZ:
 			sband->channels = data->channels_2ghz;
 			sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
 			sband->bitrates = data->rates;
 			sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
 			break;
 		case NL80211_BAND_5GHZ:
 			sband->channels = data->channels_5ghz;
 			sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
 			sband->bitrates = data->rates + 4;
 			sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;

 			sband->vht_cap.vht_supported = true;
 			sband->vht_cap.cap =
 				IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
 				IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
 				IEEE80211_VHT_CAP_RXLDPC |
 				IEEE80211_VHT_CAP_SHORT_GI_80 |
 				IEEE80211_VHT_CAP_SHORT_GI_160 |
 				IEEE80211_VHT_CAP_TXSTBC |
 				IEEE80211_VHT_CAP_RXSTBC_4 |
 				IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
 			sband->vht_cap.vht_mcs.rx_mcs_map =
 				cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
 					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
 					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
 					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
 					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
 					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
 					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
 					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
 			sband->vht_cap.vht_mcs.tx_mcs_map =
 				sband->vht_cap.vht_mcs.rx_mcs_map;
 			break;
 		case NL80211_BAND_6GHZ:
 			sband->channels = data->channels_6ghz;
 			sband->n_channels = ARRAY_SIZE(hwsim_channels_6ghz);
 			sband->bitrates = data->rates + 4;
 			sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
 			break;
 		case NL80211_BAND_S1GHZ:
 			memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
 			       sizeof(sband->s1g_cap));
 			sband->channels = data->channels_s1g;
 			sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
 			break;
 		default:
 			continue;
 		}

 		if (band != NL80211_BAND_6GHZ){
 			sband->ht_cap.ht_supported = true;
 			sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 					    IEEE80211_HT_CAP_GRN_FLD |
 					    IEEE80211_HT_CAP_SGI_20 |
 					    IEEE80211_HT_CAP_SGI_40 |
 					    IEEE80211_HT_CAP_DSSSCCK40;
 			sband->ht_cap.ampdu_factor = 0x3;
 			sband->ht_cap.ampdu_density = 0x6;
 			memset(&sband->ht_cap.mcs, 0,
 			       sizeof(sband->ht_cap.mcs));
 			sband->ht_cap.mcs.rx_mask[0] = 0xff;
 			sband->ht_cap.mcs.rx_mask[1] = 0xff;
 			sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 		}

 		mac80211_hwsim_sband_capab(sband);

 		hw->wiphy->bands[band] = sband;
 	}

 	/* By default all radios belong to the first group */
 	data->group = 1;
 	mutex_init(&data->mutex);

 	data->netgroup = hwsim_net_get_netgroup(net);
 	data->wmediumd = hwsim_net_get_wmediumd(net);

 	/* Enable frame retransmissions for lossy channels */
 	hw->max_rates = 4;
 	hw->max_rate_tries = 11;

 	hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
 	hw->wiphy->n_vendor_commands =
 		ARRAY_SIZE(mac80211_hwsim_vendor_commands);
 	hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
 	hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);

 	if (param->reg_strict)
 		hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
 	if (param->regd) {
 		data->regd = param->regd;
 		hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
 		wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
 		/* give the regulatory workqueue a chance to run */
 		schedule_timeout_interruptible(1);
 	}

 	if (param->no_vif)
 		ieee80211_hw_set(hw, NO_AUTO_VIF);

 	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);

 	for (i = 0; i < ARRAY_SIZE(data->link_data); i++) {
 		hrtimer_init(&data->link_data[i].beacon_timer, CLOCK_MONOTONIC,
 			     HRTIMER_MODE_ABS_SOFT);
 		data->link_data[i].beacon_timer.function =
 			mac80211_hwsim_beacon;
 		data->link_data[i].link_id = i;
 	}

 	err = ieee80211_register_hw(hw);
 	if (err < 0) {
 		pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
 		       err);
 		goto failed_hw;
 	}

 	wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);

 	if (param->reg_alpha2) {
 		data->alpha2[0] = param->reg_alpha2[0];
 		data->alpha2[1] = param->reg_alpha2[1];
 		regulatory_hint(hw->wiphy, param->reg_alpha2);
 	}

 	data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
 	debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
 	debugfs_create_file("group", 0666, data->debugfs, data,
 			    &hwsim_fops_group);
 	debugfs_create_file("rx_rssi", 0666, data->debugfs, data,
 			    &hwsim_fops_rx_rssi);
 	if (!data->use_chanctx)
 		debugfs_create_file("dfs_simulate_radar", 0222,
 				    data->debugfs,
 				    data, &hwsim_simulate_radar);

 	spin_lock_bh(&hwsim_radio_lock);
 	err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
 				     hwsim_rht_params);
 	if (err < 0) {
 		if (info) {
 			GENL_SET_ERR_MSG(info, "perm addr already present");
 			NL_SET_BAD_ATTR(info->extack,
 					info->attrs[HWSIM_ATTR_PERM_ADDR]);
 		}
 		spin_unlock_bh(&hwsim_radio_lock);
 		goto failed_final_insert;
 	}

 	list_add_tail(&data->list, &hwsim_radios);
 	hwsim_radios_generation++;
 	spin_unlock_bh(&hwsim_radio_lock);

 	hwsim_mcast_new_radio(idx, info, param);

 	return idx;

 failed_final_insert:
 	debugfs_remove_recursive(data->debugfs);
 	ieee80211_unregister_hw(data->hw);
 failed_hw:
 	device_release_driver(data->dev);
 failed_bind:
 	device_unregister(data->dev);
 failed_drvdata:
 	ieee80211_free_hw(hw);
 failed:
 	return err;
 }

 static void hwsim_mcast_del_radio(int id, const char *hwname,
 				  struct genl_info *info)
 {
 	struct sk_buff *skb;
 	void *data;
 	int ret;

 	skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
 	if (!skb)
 		return;

 	data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 			   HWSIM_CMD_DEL_RADIO);
 	if (!data)
 		goto error;

 	ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
 	if (ret < 0)
 		goto error;

 	ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
 		      hwname);
 	if (ret < 0)
 		goto error;

 	genlmsg_end(skb, data);

 	hwsim_mcast_config_msg(skb, info);

 	return;

 error:
 	nlmsg_free(skb);
 }

 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
 				     const char *hwname,
 				     struct genl_info *info)
 {
 	hwsim_mcast_del_radio(data->idx, hwname, info);
 	debugfs_remove_recursive(data->debugfs);
 	ieee80211_unregister_hw(data->hw);
 	device_release_driver(data->dev);
 	device_unregister(data->dev);
 	ieee80211_free_hw(data->hw);
 }

 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
 				    struct mac80211_hwsim_data *data,
 				    u32 portid, u32 seq,
 				    struct netlink_callback *cb, int flags)
 {
 	void *hdr;
 	struct hwsim_new_radio_params param = { };
 	int res = -EMSGSIZE;

 	hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
 			  HWSIM_CMD_GET_RADIO);
 	if (!hdr)
 		return -EMSGSIZE;

 	if (cb)
 		genl_dump_check_consistent(cb, hdr);

 	if (data->alpha2[0] && data->alpha2[1])
 		param.reg_alpha2 = data->alpha2;

 	param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
 					REGULATORY_STRICT_REG);
 	param.p2p_device = !!(data->hw->wiphy->interface_modes &
 					BIT(NL80211_IFTYPE_P2P_DEVICE));
 	param.use_chanctx = data->use_chanctx;
 	param.regd = data->regd;
 	param.channels = data->channels;
 	param.hwname = wiphy_name(data->hw->wiphy);

 	res = append_radio_msg(skb, data->idx, &param);
 	if (res < 0)
 		goto out_err;

 	genlmsg_end(skb, hdr);
 	return 0;

 out_err:
 	genlmsg_cancel(skb, hdr);
 	return res;
 }

 static void mac80211_hwsim_free(void)
 {
 	struct mac80211_hwsim_data *data;

 	spin_lock_bh(&hwsim_radio_lock);
 	while ((data = list_first_entry_or_null(&hwsim_radios,
 						struct mac80211_hwsim_data,
 						list))) {
 		list_del(&data->list);
 		spin_unlock_bh(&hwsim_radio_lock);
 		mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
 					 NULL);
 		spin_lock_bh(&hwsim_radio_lock);
 	}
 	spin_unlock_bh(&hwsim_radio_lock);
 	class_destroy(hwsim_class);
 }

 static const struct net_device_ops hwsim_netdev_ops = {
 	.ndo_start_xmit 	= hwsim_mon_xmit,
 	.ndo_set_mac_address 	= eth_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
 };

 static void hwsim_mon_setup(struct net_device *dev)
 {
 	u8 addr[ETH_ALEN];

 	dev->netdev_ops = &hwsim_netdev_ops;
 	dev->needs_free_netdev = true;
 	ether_setup(dev);
 	dev->priv_flags |= IFF_NO_QUEUE;
 	dev->type = ARPHRD_IEEE80211_RADIOTAP;
 	eth_zero_addr(addr);
 	addr[0] = 0x12;
 	eth_hw_addr_set(dev, addr);
 }

 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
 {
 	return rhashtable_lookup_fast(&hwsim_radios_rht,
 				      addr,
 				      hwsim_rht_params);
 }

 static void hwsim_register_wmediumd(struct net *net, u32 portid)
 {
 	struct mac80211_hwsim_data *data;

 	hwsim_net_set_wmediumd(net, portid);

 	spin_lock_bh(&hwsim_radio_lock);
 	list_for_each_entry(data, &hwsim_radios, list) {
 		if (data->netgroup == hwsim_net_get_netgroup(net))
 			data->wmediumd = portid;
 	}
 	spin_unlock_bh(&hwsim_radio_lock);
 }

 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
 					   struct genl_info *info)
 {

 	struct ieee80211_hdr *hdr;
 	struct mac80211_hwsim_data *data2;
 	struct ieee80211_tx_info *txi;
 	struct hwsim_tx_rate *tx_attempts;
 	u64 ret_skb_cookie;
 	struct sk_buff *skb, *tmp;
 	const u8 *src;
 	unsigned int hwsim_flags;
 	int i;
 	unsigned long flags;
 	bool found = false;

 	if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
 	    !info->attrs[HWSIM_ATTR_FLAGS] ||
 	    !info->attrs[HWSIM_ATTR_COOKIE] ||
 	    !info->attrs[HWSIM_ATTR_SIGNAL] ||
 	    !info->attrs[HWSIM_ATTR_TX_INFO])
 		goto out;

 	src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
 	hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
 	ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);

 	data2 = get_hwsim_data_ref_from_addr(src);
 	if (!data2)
 		goto out;

 	if (!hwsim_virtio_enabled) {
 		if (hwsim_net_get_netgroup(genl_info_net(info)) !=
 		    data2->netgroup)
 			goto out;

 		if (info->snd_portid != data2->wmediumd)
 			goto out;
 	}

 	/* look for the skb matching the cookie passed back from user */
 	spin_lock_irqsave(&data2->pending.lock, flags);
 	skb_queue_walk_safe(&data2->pending, skb, tmp) {
 		uintptr_t skb_cookie;

 		txi = IEEE80211_SKB_CB(skb);
 		skb_cookie = (uintptr_t)txi->rate_driver_data[0];

 		if (skb_cookie == ret_skb_cookie) {
 			__skb_unlink(skb, &data2->pending);
 			found = true;
 			break;
 		}
 	}
 	spin_unlock_irqrestore(&data2->pending.lock, flags);

 	/* not found */
 	if (!found)
 		goto out;

 	/* Tx info received because the frame was broadcasted on user space,
 	 so we get all the necessary info: tx attempts and skb control buff */

 	tx_attempts = (struct hwsim_tx_rate *)nla_data(
 		       info->attrs[HWSIM_ATTR_TX_INFO]);

 	/* now send back TX status */
 	txi = IEEE80211_SKB_CB(skb);

 	ieee80211_tx_info_clear_status(txi);

 	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 		txi->status.rates[i].idx = tx_attempts[i].idx;
 		txi->status.rates[i].count = tx_attempts[i].count;
 	}

 	txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);

 	if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
 	   (hwsim_flags & HWSIM_TX_STAT_ACK)) {
 		if (skb->len >= 16) {
 			hdr = (struct ieee80211_hdr *) skb->data;
 			mac80211_hwsim_monitor_ack(data2->channel,
 						   hdr->addr2);
 		}
 		txi->flags |= IEEE80211_TX_STAT_ACK;
 	}

 	if (hwsim_flags & HWSIM_TX_CTL_NO_ACK)
 		txi->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;

 	ieee80211_tx_status_irqsafe(data2->hw, skb);
 	return 0;
 out:
 	return -EINVAL;

 }

 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
 					  struct genl_info *info)
 {
 	struct mac80211_hwsim_data *data2;
 	struct ieee80211_rx_status rx_status;
 	struct ieee80211_hdr *hdr;
 	const u8 *dst;
 	int frame_data_len;
 	void *frame_data;
 	struct sk_buff *skb = NULL;
 	struct ieee80211_channel *channel = NULL;

 	if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
 	    !info->attrs[HWSIM_ATTR_FRAME] ||
 	    !info->attrs[HWSIM_ATTR_RX_RATE] ||
 	    !info->attrs[HWSIM_ATTR_SIGNAL])
 		goto out;

 	dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
 	frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
 	frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);

 	if (frame_data_len < sizeof(struct ieee80211_hdr_3addr) ||
 	    frame_data_len > IEEE80211_MAX_DATA_LEN)
 		goto err;

 	/* Allocate new skb here */
 	skb = alloc_skb(frame_data_len, GFP_KERNEL);
 	if (skb == NULL)
 		goto err;

 	/* Copy the data */
 	skb_put_data(skb, frame_data, frame_data_len);

 	data2 = get_hwsim_data_ref_from_addr(dst);
 	if (!data2)
 		goto out;

 	if (data2->use_chanctx) {
 		if (data2->tmp_chan)
 			channel = data2->tmp_chan;
 	} else {
 		channel = data2->channel;
 	}

 	if (!hwsim_virtio_enabled) {
 		if (hwsim_net_get_netgroup(genl_info_net(info)) !=
 		    data2->netgroup)
 			goto out;

 		if (info->snd_portid != data2->wmediumd)
 			goto out;
 	}

 	/* check if radio is configured properly */

 	if ((data2->idle && !data2->tmp_chan) || !data2->started)
 		goto out;

 	/* A frame is received from user space */
 	memset(&rx_status, 0, sizeof(rx_status));
 	if (info->attrs[HWSIM_ATTR_FREQ]) {
 		struct tx_iter_data iter_data = {};

 		/* throw away off-channel packets, but allow both the temporary
 		 * ("hw" scan/remain-on-channel), regular channels and links,
 		 * since the internal datapath also allows this
 		 */
 		rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);

 		iter_data.channel = ieee80211_get_channel(data2->hw->wiphy,
 							  rx_status.freq);
 		if (!iter_data.channel)
 			goto out;
 		rx_status.band = iter_data.channel->band;

 		mutex_lock(&data2->mutex);
 		if (!hwsim_chans_compat(iter_data.channel, channel)) {
 			ieee80211_iterate_active_interfaces_atomic(
 				data2->hw, IEEE80211_IFACE_ITER_NORMAL,
 				mac80211_hwsim_tx_iter, &iter_data);
 			if (!iter_data.receive) {
 				mutex_unlock(&data2->mutex);
 				goto out;
 			}
 		}
 		mutex_unlock(&data2->mutex);
 	} else if (!channel) {
 		goto out;
 	} else {
 		rx_status.freq = channel->center_freq;
 		rx_status.band = channel->band;
 	}

 	rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
 	if (rx_status.rate_idx >= data2->hw->wiphy->bands[rx_status.band]->n_bitrates)
 		goto out;
 	rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);

 	hdr = (void *)skb->data;

 	if (ieee80211_is_beacon(hdr->frame_control) ||
 	    ieee80211_is_probe_resp(hdr->frame_control))
 		rx_status.boottime_ns = ktime_get_boottime_ns();

 	mac80211_hwsim_rx(data2, &rx_status, skb);

 	return 0;
 err:
 	pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
 out:
 	dev_kfree_skb(skb);
 	return -EINVAL;
 }

 static int hwsim_register_received_nl(struct sk_buff *skb_2,
 				      struct genl_info *info)
 {
 	struct net *net = genl_info_net(info);
 	struct mac80211_hwsim_data *data;
 	int chans = 1;

 	spin_lock_bh(&hwsim_radio_lock);
 	list_for_each_entry(data, &hwsim_radios, list)
 		chans = max(chans, data->channels);
 	spin_unlock_bh(&hwsim_radio_lock);

 	/* In the future we should revise the userspace API and allow it
 	 * to set a flag that it does support multi-channel, then we can
 	 * let this pass conditionally on the flag.
 	 * For current userspace, prohibit it since it won't work right.
 	 */
 	if (chans > 1)
 		return -EOPNOTSUPP;

 	if (hwsim_net_get_wmediumd(net))
 		return -EBUSY;

 	hwsim_register_wmediumd(net, info->snd_portid);

 	pr_debug("mac80211_hwsim: received a REGISTER, "
 	       "switching to wmediumd mode with pid %d\n", info->snd_portid);

 	return 0;
 }

 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
 {
 	int i;

 	for (i = 0; i < n_ciphers; i++) {
 		int j;
 		int found = 0;

 		for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
 			if (ciphers[i] == hwsim_ciphers[j]) {
 				found = 1;
 				break;
 			}
 		}

 		if (!found)
 			return false;
 	}

 	return true;
 }

 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
 {
 	struct hwsim_new_radio_params param = { 0 };
 	const char *hwname = NULL;
 	int ret;

 	param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
 	param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
 	param.channels = channels;
 	param.destroy_on_close =
 		info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];

 	if (info->attrs[HWSIM_ATTR_CHANNELS])
 		param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);

 	if (param.channels < 1) {
 		GENL_SET_ERR_MSG(info, "must have at least one channel");
 		return -EINVAL;
 	}

 	if (info->attrs[HWSIM_ATTR_NO_VIF])
 		param.no_vif = true;

 	if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
 		param.use_chanctx = true;
 	else
 		param.use_chanctx = (param.channels > 1);

 	if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
 		param.reg_alpha2 =
 			nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);

 	if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
 		u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);

 		if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
 			return -EINVAL;

 		idx = array_index_nospec(idx,
 					 ARRAY_SIZE(hwsim_world_regdom_custom));
 		param.regd = hwsim_world_regdom_custom[idx];
 	}

 	if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
 		if (!is_valid_ether_addr(
 				nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
 			GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
 			NL_SET_BAD_ATTR(info->extack,
 					info->attrs[HWSIM_ATTR_PERM_ADDR]);
 			return -EINVAL;
 		}

 		param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
 	}

 	if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
 		param.iftypes =
 			nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);

 		if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
 			NL_SET_ERR_MSG_ATTR(info->extack,
 					    info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
 					    "cannot support more iftypes than kernel");
 			return -EINVAL;
 		}
 	} else {
 		param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
 	}

 	/* ensure both flag and iftype support is honored */
 	if (param.p2p_device ||
 	    param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
 		param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
 		param.p2p_device = true;
 	}

 	if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
 		u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);

 		param.ciphers =
 			nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);

 		if (len % sizeof(u32)) {
 			NL_SET_ERR_MSG_ATTR(info->extack,
 					    info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
 					    "bad cipher list length");
 			return -EINVAL;
 		}

 		param.n_ciphers = len / sizeof(u32);

 		if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
 			NL_SET_ERR_MSG_ATTR(info->extack,
 					    info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
 					    "too many ciphers specified");
 			return -EINVAL;
 		}

 		if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
 			NL_SET_ERR_MSG_ATTR(info->extack,
 					    info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
 					    "unsupported ciphers specified");
 			return -EINVAL;
 		}
 	}

 	param.mlo = info->attrs[HWSIM_ATTR_MLO_SUPPORT];

 	if (param.mlo)
 		param.use_chanctx = true;

 	if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
 		hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
 				  nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
 				  GFP_KERNEL);
 		if (!hwname)
 			return -ENOMEM;
 		param.hwname = hwname;
 	}

 	ret = mac80211_hwsim_new_radio(info, &param);
 	kfree(hwname);
 	return ret;
 }

 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
 {
 	struct mac80211_hwsim_data *data;
 	s64 idx = -1;
 	const char *hwname = NULL;

 	if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
 		idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
 	} else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
 		hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
 				  nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
 				  GFP_KERNEL);
 		if (!hwname)
 			return -ENOMEM;
 	} else
 		return -EINVAL;

 	spin_lock_bh(&hwsim_radio_lock);
 	list_for_each_entry(data, &hwsim_radios, list) {
 		if (idx >= 0) {
 			if (data->idx != idx)
 				continue;
 		} else {
 			if (!hwname ||
 			    strcmp(hwname, wiphy_name(data->hw->wiphy)))
 				continue;
 		}

 		if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
 			continue;

 		list_del(&data->list);
 		rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
 				       hwsim_rht_params);
 		hwsim_radios_generation++;
 		spin_unlock_bh(&hwsim_radio_lock);
 		mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
 					 info);
 		kfree(hwname);
 		return 0;
 	}
 	spin_unlock_bh(&hwsim_radio_lock);

 	kfree(hwname);
 	return -ENODEV;
 }

 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
 {
 	struct mac80211_hwsim_data *data;
 	struct sk_buff *skb;
 	int idx, res = -ENODEV;

 	if (!info->attrs[HWSIM_ATTR_RADIO_ID])
 		return -EINVAL;
 	idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);

 	spin_lock_bh(&hwsim_radio_lock);
 	list_for_each_entry(data, &hwsim_radios, list) {
 		if (data->idx != idx)
 			continue;

 		if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
 			continue;

 		skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 		if (!skb) {
 			res = -ENOMEM;
 			goto out_err;
 		}

 		res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
 					       info->snd_seq, NULL, 0);
 		if (res < 0) {
 			nlmsg_free(skb);
 			goto out_err;
 		}

 		res = genlmsg_reply(skb, info);
 		break;
 	}

 out_err:
 	spin_unlock_bh(&hwsim_radio_lock);

 	return res;
 }

 static int hwsim_dump_radio_nl(struct sk_buff *skb,
 			       struct netlink_callback *cb)
 {
 	int last_idx = cb->args[0] - 1;
 	struct mac80211_hwsim_data *data = NULL;
 	int res = 0;
 	void *hdr;

 	spin_lock_bh(&hwsim_radio_lock);
 	cb->seq = hwsim_radios_generation;

 	if (last_idx >= hwsim_radio_idx-1)
 		goto done;

 	list_for_each_entry(data, &hwsim_radios, list) {
 		if (data->idx <= last_idx)
 			continue;

 		if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
 			continue;

 		res = mac80211_hwsim_get_radio(skb, data,
 					       NETLINK_CB(cb->skb).portid,
 					       cb->nlh->nlmsg_seq, cb,
 					       NLM_F_MULTI);
 		if (res < 0)
 			break;

 		last_idx = data->idx;
 	}

 	cb->args[0] = last_idx + 1;

 	/* list changed, but no new element sent, set interrupted flag */
 	if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
 		hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
 				  cb->nlh->nlmsg_seq, &hwsim_genl_family,
 				  NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
 		if (hdr) {
 			genl_dump_check_consistent(cb, hdr);
 			genlmsg_end(skb, hdr);
 		} else {
 			res = -EMSGSIZE;
 		}
 	}

 done:
 	spin_unlock_bh(&hwsim_radio_lock);
 	return res ?: skb->len;
 }

 /* Generic Netlink operations array */
 static const struct genl_small_ops hwsim_ops[] = {
 	{
 		.cmd = HWSIM_CMD_REGISTER,
 		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.doit = hwsim_register_received_nl,
 		.flags = GENL_UNS_ADMIN_PERM,
 	},
 	{
 		.cmd = HWSIM_CMD_FRAME,
 		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.doit = hwsim_cloned_frame_received_nl,
 	},
 	{
 		.cmd = HWSIM_CMD_TX_INFO_FRAME,
 		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.doit = hwsim_tx_info_frame_received_nl,
 	},
 	{
 		.cmd = HWSIM_CMD_NEW_RADIO,
 		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.doit = hwsim_new_radio_nl,
 		.flags = GENL_UNS_ADMIN_PERM,
 	},
 	{
 		.cmd = HWSIM_CMD_DEL_RADIO,
 		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.doit = hwsim_del_radio_nl,
 		.flags = GENL_UNS_ADMIN_PERM,
 	},
 	{
 		.cmd = HWSIM_CMD_GET_RADIO,
 		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.doit = hwsim_get_radio_nl,
 		.dumpit = hwsim_dump_radio_nl,
 	},
 };

 static struct genl_family hwsim_genl_family __ro_after_init = {
 	.name = "MAC80211_HWSIM",
 	.version = 1,
 	.maxattr = HWSIM_ATTR_MAX,
 	.policy = hwsim_genl_policy,
 	.netnsok = true,
 	.module = THIS_MODULE,
 	.small_ops = hwsim_ops,
 	.n_small_ops = ARRAY_SIZE(hwsim_ops),
 	.resv_start_op = HWSIM_CMD_DEL_MAC_ADDR + 1,
 	.mcgrps = hwsim_mcgrps,
 	.n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
 };

 static void remove_user_radios(u32 portid)
 {
 	struct mac80211_hwsim_data *entry, *tmp;
 	LIST_HEAD(list);

 	spin_lock_bh(&hwsim_radio_lock);
 	list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
 		if (entry->destroy_on_close && entry->portid == portid) {
 			list_move(&entry->list, &list);
 			rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
 					       hwsim_rht_params);
 			hwsim_radios_generation++;
 		}
 	}
 	spin_unlock_bh(&hwsim_radio_lock);

 	list_for_each_entry_safe(entry, tmp, &list, list) {
 		list_del(&entry->list);
 		mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
 					 NULL);
 	}
 }

 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
 					 unsigned long state,
 					 void *_notify)
 {
 	struct netlink_notify *notify = _notify;

 	if (state != NETLINK_URELEASE)
 		return NOTIFY_DONE;

 	remove_user_radios(notify->portid);

 	if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
 		printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
 		       " socket, switching to perfect channel medium\n");
 		hwsim_register_wmediumd(notify->net, 0);
 	}
 	return NOTIFY_DONE;

 }

 static struct notifier_block hwsim_netlink_notifier = {
 	.notifier_call = mac80211_hwsim_netlink_notify,
 };

 static int __init hwsim_init_netlink(void)
 {
 	int rc;

 	printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");

 	rc = genl_register_family(&hwsim_genl_family);
 	if (rc)
 		goto failure;

 	rc = netlink_register_notifier(&hwsim_netlink_notifier);
 	if (rc) {
 		genl_unregister_family(&hwsim_genl_family);
 		goto failure;
 	}

 	return 0;

 failure:
 	pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
 	return -EINVAL;
 }

 static __net_init int hwsim_init_net(struct net *net)
 {
 	return hwsim_net_set_netgroup(net);
 }

 static void __net_exit hwsim_exit_net(struct net *net)
 {
 	struct mac80211_hwsim_data *data, *tmp;
 	LIST_HEAD(list);

 	spin_lock_bh(&hwsim_radio_lock);
 	list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
 		if (!net_eq(wiphy_net(data->hw->wiphy), net))
 			continue;

 		/* Radios created in init_net are returned to init_net. */
 		if (data->netgroup == hwsim_net_get_netgroup(&init_net))
 			continue;

 		list_move(&data->list, &list);
 		rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
 				       hwsim_rht_params);
 		hwsim_radios_generation++;
 	}
 	spin_unlock_bh(&hwsim_radio_lock);

 	list_for_each_entry_safe(data, tmp, &list, list) {
 		list_del(&data->list);
 		mac80211_hwsim_del_radio(data,
 					 wiphy_name(data->hw->wiphy),
 					 NULL);
 	}

 	ida_free(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
 }

 static struct pernet_operations hwsim_net_ops = {
 	.init = hwsim_init_net,
 	.exit = hwsim_exit_net,
 	.id   = &hwsim_net_id,
 	.size = sizeof(struct hwsim_net),
 };

 static void hwsim_exit_netlink(void)
 {
 	/* unregister the notifier */
 	netlink_unregister_notifier(&hwsim_netlink_notifier);
 	/* unregister the family */
 	genl_unregister_family(&hwsim_genl_family);
 }

 #if IS_REACHABLE(CONFIG_VIRTIO)
 static void hwsim_virtio_tx_done(struct virtqueue *vq)
 {
 	unsigned int len;
 	struct sk_buff *skb;
 	unsigned long flags;

 	spin_lock_irqsave(&hwsim_virtio_lock, flags);
 	while ((skb = virtqueue_get_buf(vq, &len)))
 		nlmsg_free(skb);
 	spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 }

 static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
 {
 	struct nlmsghdr *nlh;
 	struct genlmsghdr *gnlh;
 	struct nlattr *tb[HWSIM_ATTR_MAX + 1];
 	struct genl_info info = {};
 	int err;

 	nlh = nlmsg_hdr(skb);
 	gnlh = nlmsg_data(nlh);

 	if (skb->len < nlh->nlmsg_len)
 		return -EINVAL;

 	err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
 			    hwsim_genl_policy, NULL);
 	if (err) {
 		pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
 		return err;
 	}

 	info.attrs = tb;

 	switch (gnlh->cmd) {
 	case HWSIM_CMD_FRAME:
 		hwsim_cloned_frame_received_nl(skb, &info);
 		break;
 	case HWSIM_CMD_TX_INFO_FRAME:
 		hwsim_tx_info_frame_received_nl(skb, &info);
 		break;
 	default:
 		pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
 		return -EPROTO;
 	}
 	return 0;
 }

 static void hwsim_virtio_rx_work(struct work_struct *work)
 {
 	struct virtqueue *vq;
 	unsigned int len;
 	struct sk_buff *skb;
 	struct scatterlist sg[1];
 	int err;
 	unsigned long flags;

 	spin_lock_irqsave(&hwsim_virtio_lock, flags);
 	if (!hwsim_virtio_enabled)
 		goto out_unlock;

 	skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
 	if (!skb)
 		goto out_unlock;
 	spin_unlock_irqrestore(&hwsim_virtio_lock, flags);

 	skb->data = skb->head;
 	skb_reset_tail_pointer(skb);
 	skb_put(skb, len);
 	hwsim_virtio_handle_cmd(skb);

 	spin_lock_irqsave(&hwsim_virtio_lock, flags);
 	if (!hwsim_virtio_enabled) {
 		nlmsg_free(skb);
 		goto out_unlock;
 	}
 	vq = hwsim_vqs[HWSIM_VQ_RX];
 	sg_init_one(sg, skb->head, skb_end_offset(skb));
 	err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
 	if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
 		nlmsg_free(skb);
 	else
 		virtqueue_kick(vq);
 	schedule_work(&hwsim_virtio_rx);

 out_unlock:
 	spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 }

 static void hwsim_virtio_rx_done(struct virtqueue *vq)
 {
 	schedule_work(&hwsim_virtio_rx);
 }

 static int init_vqs(struct virtio_device *vdev)
 {
 	vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
 		[HWSIM_VQ_TX] = hwsim_virtio_tx_done,
 		[HWSIM_VQ_RX] = hwsim_virtio_rx_done,
 	};
 	const char *names[HWSIM_NUM_VQS] = {
 		[HWSIM_VQ_TX] = "tx",
 		[HWSIM_VQ_RX] = "rx",
 	};

 	return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
 			       hwsim_vqs, callbacks, names, NULL);
 }

 static int fill_vq(struct virtqueue *vq)
 {
 	int i, err;
 	struct sk_buff *skb;
 	struct scatterlist sg[1];

 	for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
 		skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
 		if (!skb)
 			return -ENOMEM;

 		sg_init_one(sg, skb->head, skb_end_offset(skb));
 		err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
 		if (err) {
 			nlmsg_free(skb);
 			return err;
 		}
 	}
 	virtqueue_kick(vq);
 	return 0;
 }

 static void remove_vqs(struct virtio_device *vdev)
 {
 	int i;

 	virtio_reset_device(vdev);

 	for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
 		struct virtqueue *vq = hwsim_vqs[i];
 		struct sk_buff *skb;

 		while ((skb = virtqueue_detach_unused_buf(vq)))
 			nlmsg_free(skb);
 	}

 	vdev->config->del_vqs(vdev);
 }

 static int hwsim_virtio_probe(struct virtio_device *vdev)
 {
 	int err;
 	unsigned long flags;

 	spin_lock_irqsave(&hwsim_virtio_lock, flags);
 	if (hwsim_virtio_enabled) {
 		spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
 		return -EEXIST;
 	}
 	spin_unlock_irqrestore(&hwsim_virtio_lock, flags);

 	err = init_vqs(vdev);
 	if (err)
 		return err;

 	virtio_device_ready(vdev);

 	err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
 	if (err)
 		goto out_remove;

 	spin_lock_irqsave(&hwsim_virtio_lock, flags);
 	hwsim_virtio_enabled = true;
 	spin_unlock_irqrestore(&hwsim_virtio_lock, flags);

 	schedule_work(&hwsim_virtio_rx);
 	return 0;

 out_remove:
 	remove_vqs(vdev);
 	return err;
 }

 static void hwsim_virtio_remove(struct virtio_device *vdev)
 {
 	hwsim_virtio_enabled = false;

 	cancel_work_sync(&hwsim_virtio_rx);

 	remove_vqs(vdev);
 }

 /* MAC80211_HWSIM virtio device id table */
 static const struct virtio_device_id id_table[] = {
 	{ VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
 	{ 0 }
 };
 MODULE_DEVICE_TABLE(virtio, id_table);

 static struct virtio_driver virtio_hwsim = {
 	.driver.name = KBUILD_MODNAME,
 	.driver.owner = THIS_MODULE,
 	.id_table = id_table,
 	.probe = hwsim_virtio_probe,
 	.remove = hwsim_virtio_remove,
 };

 static int hwsim_register_virtio_driver(void)
 {
 	return register_virtio_driver(&virtio_hwsim);
 }

 static void hwsim_unregister_virtio_driver(void)
 {
 	unregister_virtio_driver(&virtio_hwsim);
 }
 #else
 static inline int hwsim_register_virtio_driver(void)
 {
 	return 0;
 }

 static inline void hwsim_unregister_virtio_driver(void)
 {
 }
 #endif

 static int __init init_mac80211_hwsim(void)
 {
 	int i, err;

 	if (radios < 0 || radios > 100)
 		return -EINVAL;

 	if (channels < 1)
 		return -EINVAL;

 	err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
 	if (err)
 		return err;

 	err = register_pernet_device(&hwsim_net_ops);
 	if (err)
 		goto out_free_rht;

 	err = platform_driver_register(&mac80211_hwsim_driver);
 	if (err)
 		goto out_unregister_pernet;

 	err = hwsim_init_netlink();
 	if (err)
 		goto out_unregister_driver;

 	err = hwsim_register_virtio_driver();
 	if (err)
 		goto out_exit_netlink;

 	hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
 	if (IS_ERR(hwsim_class)) {
 		err = PTR_ERR(hwsim_class);
 		goto out_exit_virtio;
 	}

 	hwsim_init_s1g_channels(hwsim_channels_s1g);

 	for (i = 0; i < radios; i++) {
 		struct hwsim_new_radio_params param = { 0 };

 		param.channels = channels;

 		switch (regtest) {
 		case HWSIM_REGTEST_DIFF_COUNTRY:
 			if (i < ARRAY_SIZE(hwsim_alpha2s))
 				param.reg_alpha2 = hwsim_alpha2s[i];
 			break;
 		case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
 			if (!i)
 				param.reg_alpha2 = hwsim_alpha2s[0];
 			break;
 		case HWSIM_REGTEST_STRICT_ALL:
 			param.reg_strict = true;
 			fallthrough;
 		case HWSIM_REGTEST_DRIVER_REG_ALL:
 			param.reg_alpha2 = hwsim_alpha2s[0];
 			break;
 		case HWSIM_REGTEST_WORLD_ROAM:
 			if (i == 0)
 				param.regd = &hwsim_world_regdom_custom_01;
 			break;
 		case HWSIM_REGTEST_CUSTOM_WORLD:
 			param.regd = &hwsim_world_regdom_custom_01;
 			break;
 		case HWSIM_REGTEST_CUSTOM_WORLD_2:
 			if (i == 0)
 				param.regd = &hwsim_world_regdom_custom_01;
 			else if (i == 1)
 				param.regd = &hwsim_world_regdom_custom_02;
 			break;
 		case HWSIM_REGTEST_STRICT_FOLLOW:
 			if (i == 0) {
 				param.reg_strict = true;
 				param.reg_alpha2 = hwsim_alpha2s[0];
 			}
 			break;
 		case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
 			if (i == 0) {
 				param.reg_strict = true;
 				param.reg_alpha2 = hwsim_alpha2s[0];
 			} else if (i == 1) {
 				param.reg_alpha2 = hwsim_alpha2s[1];
 			}
 			break;
 		case HWSIM_REGTEST_ALL:
 			switch (i) {
 			case 0:
 				param.regd = &hwsim_world_regdom_custom_01;
 				break;
 			case 1:
 				param.regd = &hwsim_world_regdom_custom_02;
 				break;
 			case 2:
 				param.reg_alpha2 = hwsim_alpha2s[0];
 				break;
 			case 3:
 				param.reg_alpha2 = hwsim_alpha2s[1];
 				break;
 			case 4:
 				param.reg_strict = true;
 				param.reg_alpha2 = hwsim_alpha2s[2];
 				break;
 			}
 			break;
 		default:
 			break;
 		}

 		param.p2p_device = support_p2p_device;
 		param.mlo = mlo;
 		param.use_chanctx = channels > 1 || mlo;
 		param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
 		if (param.p2p_device)
 			param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);

 		err = mac80211_hwsim_new_radio(NULL, &param);
 		if (err < 0)
 			goto out_free_radios;
 	}

 	hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
 				 hwsim_mon_setup);
 	if (hwsim_mon == NULL) {
 		err = -ENOMEM;
 		goto out_free_radios;
 	}

 	rtnl_lock();
 	err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
 	if (err < 0) {
 		rtnl_unlock();
 		goto out_free_mon;
 	}

 	err = register_netdevice(hwsim_mon);
 	if (err < 0) {
 		rtnl_unlock();
 		goto out_free_mon;
 	}
 	rtnl_unlock();

 	return 0;

 out_free_mon:
 	free_netdev(hwsim_mon);
 out_free_radios:
 	mac80211_hwsim_free();
 out_exit_virtio:
 	hwsim_unregister_virtio_driver();
 out_exit_netlink:
 	hwsim_exit_netlink();
 out_unregister_driver:
 	platform_driver_unregister(&mac80211_hwsim_driver);
 out_unregister_pernet:
 	unregister_pernet_device(&hwsim_net_ops);
 out_free_rht:
 	rhashtable_destroy(&hwsim_radios_rht);
 	return err;
 }
 module_init(init_mac80211_hwsim);

 static void __exit exit_mac80211_hwsim(void)
 {
 	pr_debug("mac80211_hwsim: unregister radios\n");

 	hwsim_unregister_virtio_driver();
 	hwsim_exit_netlink();

 	mac80211_hwsim_free();

 	rhashtable_destroy(&hwsim_radios_rht);
 	unregister_netdev(hwsim_mon);
 	platform_driver_unregister(&mac80211_hwsim_driver);
 	unregister_pernet_device(&hwsim_net_ops);
 }
 module_exit(exit_mac80211_hwsim);