1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   4 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   5 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   6 * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
   7 * Copyright (C) 2018 Intel Corporation
   8 */
   9
  10/*
  11 * TODO:
  12 * - Add TSF sync and fix IBSS beacon transmission by adding
  13 *   competition for "air time" at TBTT
  14 * - RX filtering based on filter configuration (data->rx_filter)
  15 */
  16
  17#include <linux/list.h>
  18#include <linux/slab.h>
  19#include <linux/spinlock.h>
  20#include <net/dst.h>
  21#include <net/xfrm.h>
  22#include <net/mac80211.h>
  23#include <net/ieee80211_radiotap.h>
  24#include <linux/if_arp.h>
  25#include <linux/rtnetlink.h>
  26#include <linux/etherdevice.h>
  27#include <linux/platform_device.h>
  28#include <linux/debugfs.h>
  29#include <linux/module.h>
  30#include <linux/ktime.h>
  31#include <net/genetlink.h>
  32#include <net/net_namespace.h>
  33#include <net/netns/generic.h>
  34#include <linux/rhashtable.h>
  35#include <linux/nospec.h>
  36#include "mac80211_hwsim.h"
  37
  38#define WARN_QUEUE 100
  39#define MAX_QUEUE 200
  40
  41MODULE_AUTHOR("Jouni Malinen");
  42MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  43MODULE_LICENSE("GPL");
  44
  45static int radios = 2;
  46module_param(radios, int, 0444);
  47MODULE_PARM_DESC(radios, "Number of simulated radios");
  48
  49static int channels = 1;
  50module_param(channels, int, 0444);
  51MODULE_PARM_DESC(channels, "Number of concurrent channels");
  52
  53static bool paged_rx = false;
  54module_param(paged_rx, bool, 0644);
  55MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  56
  57static bool rctbl = false;
  58module_param(rctbl, bool, 0444);
  59MODULE_PARM_DESC(rctbl, "Handle rate control table");
  60
  61static bool support_p2p_device = true;
  62module_param(support_p2p_device, bool, 0444);
  63MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  64
  65/**
  66 * enum hwsim_regtest - the type of regulatory tests we offer
  67 *
  68 * These are the different values you can use for the regtest
  69 * module parameter. This is useful to help test world roaming
  70 * and the driver regulatory_hint() call and combinations of these.
  71 * If you want to do specific alpha2 regulatory domain tests simply
  72 * use the userspace regulatory request as that will be respected as
  73 * well without the need of this module parameter. This is designed
  74 * only for testing the driver regulatory request, world roaming
  75 * and all possible combinations.
  76 *
  77 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  78 * 	this is the default value.
  79 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  80 *	hint, only one driver regulatory hint will be sent as such the
  81 * 	secondary radios are expected to follow.
  82 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  83 * 	request with all radios reporting the same regulatory domain.
  84 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  85 * 	different regulatory domains requests. Expected behaviour is for
  86 * 	an intersection to occur but each device will still use their
  87 * 	respective regulatory requested domains. Subsequent radios will
  88 * 	use the resulting intersection.
  89 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  90 *	this by using a custom beacon-capable regulatory domain for the first
  91 *	radio. All other device world roam.
  92 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  93 * 	domain requests. All radios will adhere to this custom world regulatory
  94 * 	domain.
  95 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  96 * 	domain requests. The first radio will adhere to the first custom world
  97 * 	regulatory domain, the second one to the second custom world regulatory
  98 * 	domain. All other devices will world roam.
  99 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
 100 *	settings, only the first radio will send a regulatory domain request
 101 *	and use strict settings. The rest of the radios are expected to follow.
 102 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 103 *	settings. All radios will adhere to this.
 104 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 105 *	domain settings, combined with secondary driver regulatory domain
 106 *	settings. The first radio will get a strict regulatory domain setting
 107 *	using the first driver regulatory request and the second radio will use
 108 *	non-strict settings using the second driver regulatory request. All
 109 *	other devices should follow the intersection created between the
 110 *	first two.
 111 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 112 * 	at least 6 radios for a complete test. We will test in this order:
 113 * 	1 - driver custom world regulatory domain
 114 * 	2 - second custom world regulatory domain
 115 * 	3 - first driver regulatory domain request
 116 * 	4 - second driver regulatory domain request
 117 * 	5 - strict regulatory domain settings using the third driver regulatory
 118 * 	    domain request
 119 * 	6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 120 * 	           regulatory requests.
 121 */
 122enum hwsim_regtest {
 123	HWSIM_REGTEST_DISABLED = 0,
 124	HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 125	HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 126	HWSIM_REGTEST_DIFF_COUNTRY = 3,
 127	HWSIM_REGTEST_WORLD_ROAM = 4,
 128	HWSIM_REGTEST_CUSTOM_WORLD = 5,
 129	HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 130	HWSIM_REGTEST_STRICT_FOLLOW = 7,
 131	HWSIM_REGTEST_STRICT_ALL = 8,
 132	HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 133	HWSIM_REGTEST_ALL = 10,
 134};
 135
 136/* Set to one of the HWSIM_REGTEST_* values above */
 137static int regtest = HWSIM_REGTEST_DISABLED;
 138module_param(regtest, int, 0444);
 139MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 140
 141static const char *hwsim_alpha2s[] = {
 142	"FI",
 143	"AL",
 144	"US",
 145	"DE",
 146	"JP",
 147	"AL",
 148};
 149
 150static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 151	.n_reg_rules = 4,
 152	.alpha2 =  "99",
 153	.reg_rules = {
 154		REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 155		REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 156		REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 157		REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 158	}
 159};
 160
 161static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 162	.n_reg_rules = 2,
 163	.alpha2 =  "99",
 164	.reg_rules = {
 165		REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 166		REG_RULE(5725-10, 5850+10, 40, 0, 30,
 167			 NL80211_RRF_NO_IR),
 168	}
 169};
 170
 171static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 172	&hwsim_world_regdom_custom_01,
 173	&hwsim_world_regdom_custom_02,
 174};
 175
 176struct hwsim_vif_priv {
 177	u32 magic;
 178	u8 bssid[ETH_ALEN];
 179	bool assoc;
 180	bool bcn_en;
 181	u16 aid;
 182};
 183
 184#define HWSIM_VIF_MAGIC	0x69537748
 185
 186static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 187{
 188	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 189	WARN(vp->magic != HWSIM_VIF_MAGIC,
 190	     "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 191	     vif, vp->magic, vif->addr, vif->type, vif->p2p);
 192}
 193
 194static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 195{
 196	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 197	vp->magic = HWSIM_VIF_MAGIC;
 198}
 199
 200static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 201{
 202	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 203	vp->magic = 0;
 204}
 205
 206struct hwsim_sta_priv {
 207	u32 magic;
 208};
 209
 210#define HWSIM_STA_MAGIC	0x6d537749
 211
 212static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 213{
 214	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 215	WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 216}
 217
 218static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 219{
 220	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 221	sp->magic = HWSIM_STA_MAGIC;
 222}
 223
 224static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 225{
 226	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 227	sp->magic = 0;
 228}
 229
 230struct hwsim_chanctx_priv {
 231	u32 magic;
 232};
 233
 234#define HWSIM_CHANCTX_MAGIC 0x6d53774a
 235
 236static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 237{
 238	struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 239	WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 240}
 241
 242static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 243{
 244	struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 245	cp->magic = HWSIM_CHANCTX_MAGIC;
 246}
 247
 248static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 249{
 250	struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 251	cp->magic = 0;
 252}
 253
 254static unsigned int hwsim_net_id;
 255
 256static DEFINE_IDA(hwsim_netgroup_ida);
 257
 258struct hwsim_net {
 259	int netgroup;
 260	u32 wmediumd;
 261};
 262
 263static inline int hwsim_net_get_netgroup(struct net *net)
 264{
 265	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 266
 267	return hwsim_net->netgroup;
 268}
 269
 270static inline int hwsim_net_set_netgroup(struct net *net)
 271{
 272	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 273
 274	hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
 275					     0, 0, GFP_KERNEL);
 276	return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
 277}
 278
 279static inline u32 hwsim_net_get_wmediumd(struct net *net)
 280{
 281	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 282
 283	return hwsim_net->wmediumd;
 284}
 285
 286static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 287{
 288	struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 289
 290	hwsim_net->wmediumd = portid;
 291}
 292
 293static struct class *hwsim_class;
 294
 295static struct net_device *hwsim_mon; /* global monitor netdev */
 296
 297#define CHAN2G(_freq)  { \
 298	.band = NL80211_BAND_2GHZ, \
 299	.center_freq = (_freq), \
 300	.hw_value = (_freq), \
 301	.max_power = 20, \
 302}
 303
 304#define CHAN5G(_freq) { \
 305	.band = NL80211_BAND_5GHZ, \
 306	.center_freq = (_freq), \
 307	.hw_value = (_freq), \
 308	.max_power = 20, \
 309}
 310
 311static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 312	CHAN2G(2412), /* Channel 1 */
 313	CHAN2G(2417), /* Channel 2 */
 314	CHAN2G(2422), /* Channel 3 */
 315	CHAN2G(2427), /* Channel 4 */
 316	CHAN2G(2432), /* Channel 5 */
 317	CHAN2G(2437), /* Channel 6 */
 318	CHAN2G(2442), /* Channel 7 */
 319	CHAN2G(2447), /* Channel 8 */
 320	CHAN2G(2452), /* Channel 9 */
 321	CHAN2G(2457), /* Channel 10 */
 322	CHAN2G(2462), /* Channel 11 */
 323	CHAN2G(2467), /* Channel 12 */
 324	CHAN2G(2472), /* Channel 13 */
 325	CHAN2G(2484), /* Channel 14 */
 326};
 327
 328static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 329	CHAN5G(5180), /* Channel 36 */
 330	CHAN5G(5200), /* Channel 40 */
 331	CHAN5G(5220), /* Channel 44 */
 332	CHAN5G(5240), /* Channel 48 */
 333
 334	CHAN5G(5260), /* Channel 52 */
 335	CHAN5G(5280), /* Channel 56 */
 336	CHAN5G(5300), /* Channel 60 */
 337	CHAN5G(5320), /* Channel 64 */
 338
 339	CHAN5G(5500), /* Channel 100 */
 340	CHAN5G(5520), /* Channel 104 */
 341	CHAN5G(5540), /* Channel 108 */
 342	CHAN5G(5560), /* Channel 112 */
 343	CHAN5G(5580), /* Channel 116 */
 344	CHAN5G(5600), /* Channel 120 */
 345	CHAN5G(5620), /* Channel 124 */
 346	CHAN5G(5640), /* Channel 128 */
 347	CHAN5G(5660), /* Channel 132 */
 348	CHAN5G(5680), /* Channel 136 */
 349	CHAN5G(5700), /* Channel 140 */
 350
 351	CHAN5G(5745), /* Channel 149 */
 352	CHAN5G(5765), /* Channel 153 */
 353	CHAN5G(5785), /* Channel 157 */
 354	CHAN5G(5805), /* Channel 161 */
 355	CHAN5G(5825), /* Channel 165 */
 356	CHAN5G(5845), /* Channel 169 */
 357};
 358
 359static const struct ieee80211_rate hwsim_rates[] = {
 360	{ .bitrate = 10 },
 361	{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 362	{ .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 363	{ .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 364	{ .bitrate = 60 },
 365	{ .bitrate = 90 },
 366	{ .bitrate = 120 },
 367	{ .bitrate = 180 },
 368	{ .bitrate = 240 },
 369	{ .bitrate = 360 },
 370	{ .bitrate = 480 },
 371	{ .bitrate = 540 }
 372};
 373
 374static const u32 hwsim_ciphers[] = {
 375	WLAN_CIPHER_SUITE_WEP40,
 376	WLAN_CIPHER_SUITE_WEP104,
 377	WLAN_CIPHER_SUITE_TKIP,
 378	WLAN_CIPHER_SUITE_CCMP,
 379	WLAN_CIPHER_SUITE_CCMP_256,
 380	WLAN_CIPHER_SUITE_GCMP,
 381	WLAN_CIPHER_SUITE_GCMP_256,
 382	WLAN_CIPHER_SUITE_AES_CMAC,
 383	WLAN_CIPHER_SUITE_BIP_CMAC_256,
 384	WLAN_CIPHER_SUITE_BIP_GMAC_128,
 385	WLAN_CIPHER_SUITE_BIP_GMAC_256,
 386};
 387
 388#define OUI_QCA 0x001374
 389#define QCA_NL80211_SUBCMD_TEST 1
 390enum qca_nl80211_vendor_subcmds {
 391	QCA_WLAN_VENDOR_ATTR_TEST = 8,
 392	QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 393};
 394
 395static const struct nla_policy
 396hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 397	[QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 398};
 399
 400static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 401					  struct wireless_dev *wdev,
 402					  const void *data, int data_len)
 403{
 404	struct sk_buff *skb;
 405	struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 406	int err;
 407	u32 val;
 408
 409	err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
 410				   data_len, hwsim_vendor_test_policy, NULL);
 411	if (err)
 412		return err;
 413	if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 414		return -EINVAL;
 415	val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 416	wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
 417
 418	/* Send a vendor event as a test. Note that this would not normally be
 419	 * done within a command handler, but rather, based on some other
 420	 * trigger. For simplicity, this command is used to trigger the event
 421	 * here.
 422	 *
 423	 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 424	 */
 425	skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 426	if (skb) {
 427		/* skb_put() or nla_put() will fill up data within
 428		 * NL80211_ATTR_VENDOR_DATA.
 429		 */
 430
 431		/* Add vendor data */
 432		nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 433
 434		/* Send the event - this will call nla_nest_end() */
 435		cfg80211_vendor_event(skb, GFP_KERNEL);
 436	}
 437
 438	/* Send a response to the command */
 439	skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 440	if (!skb)
 441		return -ENOMEM;
 442
 443	/* skb_put() or nla_put() will fill up data within
 444	 * NL80211_ATTR_VENDOR_DATA
 445	 */
 446	nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 447
 448	return cfg80211_vendor_cmd_reply(skb);
 449}
 450
 451static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 452	{
 453		.info = { .vendor_id = OUI_QCA,
 454			  .subcmd = QCA_NL80211_SUBCMD_TEST },
 455		.flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 456		.doit = mac80211_hwsim_vendor_cmd_test,
 457		.policy = hwsim_vendor_test_policy,
 458		.maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
 459	}
 460};
 461
 462/* Advertise support vendor specific events */
 463static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 464	{ .vendor_id = OUI_QCA, .subcmd = 1 },
 465};
 466
 467static spinlock_t hwsim_radio_lock;
 468static LIST_HEAD(hwsim_radios);
 469static struct rhashtable hwsim_radios_rht;
 470static int hwsim_radio_idx;
 471static int hwsim_radios_generation = 1;
 472
 473static struct platform_driver mac80211_hwsim_driver = {
 474	.driver = {
 475		.name = "mac80211_hwsim",
 476	},
 477};
 478
 479struct mac80211_hwsim_data {
 480	struct list_head list;
 481	struct rhash_head rht;
 482	struct ieee80211_hw *hw;
 483	struct device *dev;
 484	struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 485	struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 486	struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 487	struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 488	struct ieee80211_iface_combination if_combination;
 489	struct ieee80211_iface_limit if_limits[3];
 490	int n_if_limits;
 491
 492	u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
 493
 494	struct mac_address addresses[2];
 495	int channels, idx;
 496	bool use_chanctx;
 497	bool destroy_on_close;
 498	u32 portid;
 499	char alpha2[2];
 500	const struct ieee80211_regdomain *regd;
 501
 502	struct ieee80211_channel *tmp_chan;
 503	struct ieee80211_channel *roc_chan;
 504	u32 roc_duration;
 505	struct delayed_work roc_start;
 506	struct delayed_work roc_done;
 507	struct delayed_work hw_scan;
 508	struct cfg80211_scan_request *hw_scan_request;
 509	struct ieee80211_vif *hw_scan_vif;
 510	int scan_chan_idx;
 511	u8 scan_addr[ETH_ALEN];
 512	struct {
 513		struct ieee80211_channel *channel;
 514		unsigned long next_start, start, end;
 515	} survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 516		      ARRAY_SIZE(hwsim_channels_5ghz)];
 517
 518	struct ieee80211_channel *channel;
 519	u64 beacon_int	/* beacon interval in us */;
 520	unsigned int rx_filter;
 521	bool started, idle, scanning;
 522	struct mutex mutex;
 523	struct hrtimer beacon_timer;
 524	enum ps_mode {
 525		PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 526	} ps;
 527	bool ps_poll_pending;
 528	struct dentry *debugfs;
 529
 530	uintptr_t pending_cookie;
 531	struct sk_buff_head pending;	/* packets pending */
 532	/*
 533	 * Only radios in the same group can communicate together (the
 534	 * channel has to match too). Each bit represents a group. A
 535	 * radio can be in more than one group.
 536	 */
 537	u64 group;
 538
 539	/* group shared by radios created in the same netns */
 540	int netgroup;
 541	/* wmediumd portid responsible for netgroup of this radio */
 542	u32 wmediumd;
 543
 544	/* difference between this hw's clock and the real clock, in usecs */
 545	s64 tsf_offset;
 546	s64 bcn_delta;
 547	/* absolute beacon transmission time. Used to cover up "tx" delay. */
 548	u64 abs_bcn_ts;
 549
 550	/* Stats */
 551	u64 tx_pkts;
 552	u64 rx_pkts;
 553	u64 tx_bytes;
 554	u64 rx_bytes;
 555	u64 tx_dropped;
 556	u64 tx_failed;
 557};
 558
 559static const struct rhashtable_params hwsim_rht_params = {
 560	.nelem_hint = 2,
 561	.automatic_shrinking = true,
 562	.key_len = ETH_ALEN,
 563	.key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
 564	.head_offset = offsetof(struct mac80211_hwsim_data, rht),
 565};
 566
 567struct hwsim_radiotap_hdr {
 568	struct ieee80211_radiotap_header hdr;
 569	__le64 rt_tsft;
 570	u8 rt_flags;
 571	u8 rt_rate;
 572	__le16 rt_channel;
 573	__le16 rt_chbitmask;
 574} __packed;
 575
 576struct hwsim_radiotap_ack_hdr {
 577	struct ieee80211_radiotap_header hdr;
 578	u8 rt_flags;
 579	u8 pad;
 580	__le16 rt_channel;
 581	__le16 rt_chbitmask;
 582} __packed;
 583
 584/* MAC80211_HWSIM netlink family */
 585static struct genl_family hwsim_genl_family;
 586
 587enum hwsim_multicast_groups {
 588	HWSIM_MCGRP_CONFIG,
 589};
 590
 591static const struct genl_multicast_group hwsim_mcgrps[] = {
 592	[HWSIM_MCGRP_CONFIG] = { .name = "config", },
 593};
 594
 595/* MAC80211_HWSIM netlink policy */
 596
 597static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 598	[HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 599	[HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 600	[HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 601			       .len = IEEE80211_MAX_DATA_LEN },
 602	[HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 603	[HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 604	[HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 605	[HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 606				 .len = IEEE80211_TX_MAX_RATES *
 607					sizeof(struct hwsim_tx_rate)},
 608	[HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 609	[HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 610	[HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 611	[HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 612	[HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 613	[HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 614	[HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 615	[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 616	[HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 617	[HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 618	[HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 619	[HWSIM_ATTR_PERM_ADDR] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 620	[HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
 621	[HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
 622};
 623
 624static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 625				    struct sk_buff *skb,
 626				    struct ieee80211_channel *chan);
 627
 628/* sysfs attributes */
 629static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 630{
 631	struct mac80211_hwsim_data *data = dat;
 632	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 633	struct sk_buff *skb;
 634	struct ieee80211_pspoll *pspoll;
 635
 636	if (!vp->assoc)
 637		return;
 638
 639	wiphy_dbg(data->hw->wiphy,
 640		  "%s: send PS-Poll to %pM for aid %d\n",
 641		  __func__, vp->bssid, vp->aid);
 642
 643	skb = dev_alloc_skb(sizeof(*pspoll));
 644	if (!skb)
 645		return;
 646	pspoll = skb_put(skb, sizeof(*pspoll));
 647	pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 648					    IEEE80211_STYPE_PSPOLL |
 649					    IEEE80211_FCTL_PM);
 650	pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 651	memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 652	memcpy(pspoll->ta, mac, ETH_ALEN);
 653
 654	rcu_read_lock();
 655	mac80211_hwsim_tx_frame(data->hw, skb,
 656				rcu_dereference(vif->chanctx_conf)->def.chan);
 657	rcu_read_unlock();
 658}
 659
 660static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 661				struct ieee80211_vif *vif, int ps)
 662{
 663	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 664	struct sk_buff *skb;
 665	struct ieee80211_hdr *hdr;
 666
 667	if (!vp->assoc)
 668		return;
 669
 670	wiphy_dbg(data->hw->wiphy,
 671		  "%s: send data::nullfunc to %pM ps=%d\n",
 672		  __func__, vp->bssid, ps);
 673
 674	skb = dev_alloc_skb(sizeof(*hdr));
 675	if (!skb)
 676		return;
 677	hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 678	hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 679					 IEEE80211_STYPE_NULLFUNC |
 680					 IEEE80211_FCTL_TODS |
 681					 (ps ? IEEE80211_FCTL_PM : 0));
 682	hdr->duration_id = cpu_to_le16(0);
 683	memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 684	memcpy(hdr->addr2, mac, ETH_ALEN);
 685	memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 686
 687	rcu_read_lock();
 688	mac80211_hwsim_tx_frame(data->hw, skb,
 689				rcu_dereference(vif->chanctx_conf)->def.chan);
 690	rcu_read_unlock();
 691}
 692
 693
 694static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 695				   struct ieee80211_vif *vif)
 696{
 697	struct mac80211_hwsim_data *data = dat;
 698	hwsim_send_nullfunc(data, mac, vif, 1);
 699}
 700
 701static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 702				      struct ieee80211_vif *vif)
 703{
 704	struct mac80211_hwsim_data *data = dat;
 705	hwsim_send_nullfunc(data, mac, vif, 0);
 706}
 707
 708static int hwsim_fops_ps_read(void *dat, u64 *val)
 709{
 710	struct mac80211_hwsim_data *data = dat;
 711	*val = data->ps;
 712	return 0;
 713}
 714
 715static int hwsim_fops_ps_write(void *dat, u64 val)
 716{
 717	struct mac80211_hwsim_data *data = dat;
 718	enum ps_mode old_ps;
 719
 720	if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 721	    val != PS_MANUAL_POLL)
 722		return -EINVAL;
 723
 724	if (val == PS_MANUAL_POLL) {
 725		if (data->ps != PS_ENABLED)
 726			return -EINVAL;
 727		local_bh_disable();
 728		ieee80211_iterate_active_interfaces_atomic(
 729			data->hw, IEEE80211_IFACE_ITER_NORMAL,
 730			hwsim_send_ps_poll, data);
 731		local_bh_enable();
 732		return 0;
 733	}
 734	old_ps = data->ps;
 735	data->ps = val;
 736
 737	local_bh_disable();
 738	if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 739		ieee80211_iterate_active_interfaces_atomic(
 740			data->hw, IEEE80211_IFACE_ITER_NORMAL,
 741			hwsim_send_nullfunc_ps, data);
 742	} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 743		ieee80211_iterate_active_interfaces_atomic(
 744			data->hw, IEEE80211_IFACE_ITER_NORMAL,
 745			hwsim_send_nullfunc_no_ps, data);
 746	}
 747	local_bh_enable();
 748
 749	return 0;
 750}
 751
 752DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 753			"%llu\n");
 754
 755static int hwsim_write_simulate_radar(void *dat, u64 val)
 756{
 757	struct mac80211_hwsim_data *data = dat;
 758
 759	ieee80211_radar_detected(data->hw);
 760
 761	return 0;
 762}
 763
 764DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 765			hwsim_write_simulate_radar, "%llu\n");
 766
 767static int hwsim_fops_group_read(void *dat, u64 *val)
 768{
 769	struct mac80211_hwsim_data *data = dat;
 770	*val = data->group;
 771	return 0;
 772}
 773
 774static int hwsim_fops_group_write(void *dat, u64 val)
 775{
 776	struct mac80211_hwsim_data *data = dat;
 777	data->group = val;
 778	return 0;
 779}
 780
 781DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 782			hwsim_fops_group_read, hwsim_fops_group_write,
 783			"%llx\n");
 784
 785static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 786					struct net_device *dev)
 787{
 788	/* TODO: allow packet injection */
 789	dev_kfree_skb(skb);
 790	return NETDEV_TX_OK;
 791}
 792
 793static inline u64 mac80211_hwsim_get_tsf_raw(void)
 794{
 795	return ktime_to_us(ktime_get_real());
 796}
 797
 798static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 799{
 800	u64 now = mac80211_hwsim_get_tsf_raw();
 801	return cpu_to_le64(now + data->tsf_offset);
 802}
 803
 804static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 805				  struct ieee80211_vif *vif)
 806{
 807	struct mac80211_hwsim_data *data = hw->priv;
 808	return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 809}
 810
 811static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 812		struct ieee80211_vif *vif, u64 tsf)
 813{
 814	struct mac80211_hwsim_data *data = hw->priv;
 815	u64 now = mac80211_hwsim_get_tsf(hw, vif);
 816	u32 bcn_int = data->beacon_int;
 817	u64 delta = abs(tsf - now);
 818
 819	/* adjust after beaconing with new timestamp at old TBTT */
 820	if (tsf > now) {
 821		data->tsf_offset += delta;
 822		data->bcn_delta = do_div(delta, bcn_int);
 823	} else {
 824		data->tsf_offset -= delta;
 825		data->bcn_delta = -(s64)do_div(delta, bcn_int);
 826	}
 827}
 828
 829static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 830				      struct sk_buff *tx_skb,
 831				      struct ieee80211_channel *chan)
 832{
 833	struct mac80211_hwsim_data *data = hw->priv;
 834	struct sk_buff *skb;
 835	struct hwsim_radiotap_hdr *hdr;
 836	u16 flags;
 837	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 838	struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 839
 840	if (WARN_ON(!txrate))
 841		return;
 842
 843	if (!netif_running(hwsim_mon))
 844		return;
 845
 846	skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 847	if (skb == NULL)
 848		return;
 849
 850	hdr = skb_push(skb, sizeof(*hdr));
 851	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 852	hdr->hdr.it_pad = 0;
 853	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 854	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 855					  (1 << IEEE80211_RADIOTAP_RATE) |
 856					  (1 << IEEE80211_RADIOTAP_TSFT) |
 857					  (1 << IEEE80211_RADIOTAP_CHANNEL));
 858	hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 859	hdr->rt_flags = 0;
 860	hdr->rt_rate = txrate->bitrate / 5;
 861	hdr->rt_channel = cpu_to_le16(chan->center_freq);
 862	flags = IEEE80211_CHAN_2GHZ;
 863	if (txrate->flags & IEEE80211_RATE_ERP_G)
 864		flags |= IEEE80211_CHAN_OFDM;
 865	else
 866		flags |= IEEE80211_CHAN_CCK;
 867	hdr->rt_chbitmask = cpu_to_le16(flags);
 868
 869	skb->dev = hwsim_mon;
 870	skb_reset_mac_header(skb);
 871	skb->ip_summed = CHECKSUM_UNNECESSARY;
 872	skb->pkt_type = PACKET_OTHERHOST;
 873	skb->protocol = htons(ETH_P_802_2);
 874	memset(skb->cb, 0, sizeof(skb->cb));
 875	netif_rx(skb);
 876}
 877
 878
 879static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 880				       const u8 *addr)
 881{
 882	struct sk_buff *skb;
 883	struct hwsim_radiotap_ack_hdr *hdr;
 884	u16 flags;
 885	struct ieee80211_hdr *hdr11;
 886
 887	if (!netif_running(hwsim_mon))
 888		return;
 889
 890	skb = dev_alloc_skb(100);
 891	if (skb == NULL)
 892		return;
 893
 894	hdr = skb_put(skb, sizeof(*hdr));
 895	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 896	hdr->hdr.it_pad = 0;
 897	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 898	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 899					  (1 << IEEE80211_RADIOTAP_CHANNEL));
 900	hdr->rt_flags = 0;
 901	hdr->pad = 0;
 902	hdr->rt_channel = cpu_to_le16(chan->center_freq);
 903	flags = IEEE80211_CHAN_2GHZ;
 904	hdr->rt_chbitmask = cpu_to_le16(flags);
 905
 906	hdr11 = skb_put(skb, 10);
 907	hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 908					   IEEE80211_STYPE_ACK);
 909	hdr11->duration_id = cpu_to_le16(0);
 910	memcpy(hdr11->addr1, addr, ETH_ALEN);
 911
 912	skb->dev = hwsim_mon;
 913	skb_reset_mac_header(skb);
 914	skb->ip_summed = CHECKSUM_UNNECESSARY;
 915	skb->pkt_type = PACKET_OTHERHOST;
 916	skb->protocol = htons(ETH_P_802_2);
 917	memset(skb->cb, 0, sizeof(skb->cb));
 918	netif_rx(skb);
 919}
 920
 921struct mac80211_hwsim_addr_match_data {
 922	u8 addr[ETH_ALEN];
 923	bool ret;
 924};
 925
 926static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 927				     struct ieee80211_vif *vif)
 928{
 929	struct mac80211_hwsim_addr_match_data *md = data;
 930
 931	if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 932		md->ret = true;
 933}
 934
 935static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 936				      const u8 *addr)
 937{
 938	struct mac80211_hwsim_addr_match_data md = {
 939		.ret = false,
 940	};
 941
 942	if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 943		return true;
 944
 945	memcpy(md.addr, addr, ETH_ALEN);
 946
 947	ieee80211_iterate_active_interfaces_atomic(data->hw,
 948						   IEEE80211_IFACE_ITER_NORMAL,
 949						   mac80211_hwsim_addr_iter,
 950						   &md);
 951
 952	return md.ret;
 953}
 954
 955static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 956			   struct sk_buff *skb)
 957{
 958	switch (data->ps) {
 959	case PS_DISABLED:
 960		return true;
 961	case PS_ENABLED:
 962		return false;
 963	case PS_AUTO_POLL:
 964		/* TODO: accept (some) Beacons by default and other frames only
 965		 * if pending PS-Poll has been sent */
 966		return true;
 967	case PS_MANUAL_POLL:
 968		/* Allow unicast frames to own address if there is a pending
 969		 * PS-Poll */
 970		if (data->ps_poll_pending &&
 971		    mac80211_hwsim_addr_match(data, skb->data + 4)) {
 972			data->ps_poll_pending = false;
 973			return true;
 974		}
 975		return false;
 976	}
 977
 978	return true;
 979}
 980
 981static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 982				  struct sk_buff *skb, int portid)
 983{
 984	struct net *net;
 985	bool found = false;
 986	int res = -ENOENT;
 987
 988	rcu_read_lock();
 989	for_each_net_rcu(net) {
 990		if (data->netgroup == hwsim_net_get_netgroup(net)) {
 991			res = genlmsg_unicast(net, skb, portid);
 992			found = true;
 993			break;
 994		}
 995	}
 996	rcu_read_unlock();
 997
 998	if (!found)
 999		nlmsg_free(skb);
1000
1001	return res;
1002}
1003
1004static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1005{
1006	u16 result = 0;
1007
1008	if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1009		result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1010	if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1011		result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1012	if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1013		result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1014	if (rate->flags & IEEE80211_TX_RC_MCS)
1015		result |= MAC80211_HWSIM_TX_RC_MCS;
1016	if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1017		result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1018	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1019		result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1020	if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1021		result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1022	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1023		result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1024	if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1025		result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1026	if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1027		result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1028	if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1029		result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1030
1031	return result;
1032}
1033
1034static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1035				       struct sk_buff *my_skb,
1036				       int dst_portid)
1037{
1038	struct sk_buff *skb;
1039	struct mac80211_hwsim_data *data = hw->priv;
1040	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1041	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1042	void *msg_head;
1043	unsigned int hwsim_flags = 0;
1044	int i;
1045	struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1046	struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1047	uintptr_t cookie;
1048
1049	if (data->ps != PS_DISABLED)
1050		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1051	/* If the queue contains MAX_QUEUE skb's drop some */
1052	if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1053		/* Droping until WARN_QUEUE level */
1054		while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1055			ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1056			data->tx_dropped++;
1057		}
1058	}
1059
1060	skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1061	if (skb == NULL)
1062		goto nla_put_failure;
1063
1064	msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1065			       HWSIM_CMD_FRAME);
1066	if (msg_head == NULL) {
1067		pr_debug("mac80211_hwsim: problem with msg_head\n");
1068		goto nla_put_failure;
1069	}
1070
1071	if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1072		    ETH_ALEN, data->addresses[1].addr))
1073		goto nla_put_failure;
1074
1075	/* We get the skb->data */
1076	if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1077		goto nla_put_failure;
1078
1079	/* We get the flags for this transmission, and we translate them to
1080	   wmediumd flags  */
1081
1082	if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1083		hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1084
1085	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1086		hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1087
1088	if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1089		goto nla_put_failure;
1090
1091	if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1092		goto nla_put_failure;
1093
1094	/* We get the tx control (rate and retries) info*/
1095
1096	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1097		tx_attempts[i].idx = info->status.rates[i].idx;
1098		tx_attempts_flags[i].idx = info->status.rates[i].idx;
1099		tx_attempts[i].count = info->status.rates[i].count;
1100		tx_attempts_flags[i].flags =
1101				trans_tx_rate_flags_ieee2hwsim(
1102						&info->status.rates[i]);
1103	}
1104
1105	if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1106		    sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1107		    tx_attempts))
1108		goto nla_put_failure;
1109
1110	if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1111		    sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1112		    tx_attempts_flags))
1113		goto nla_put_failure;
1114
1115	/* We create a cookie to identify this skb */
1116	data->pending_cookie++;
1117	cookie = data->pending_cookie;
1118	info->rate_driver_data[0] = (void *)cookie;
1119	if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1120		goto nla_put_failure;
1121
1122	genlmsg_end(skb, msg_head);
1123	if (hwsim_unicast_netgroup(data, skb, dst_portid))
1124		goto err_free_txskb;
1125
1126	/* Enqueue the packet */
1127	skb_queue_tail(&data->pending, my_skb);
1128	data->tx_pkts++;
1129	data->tx_bytes += my_skb->len;
1130	return;
1131
1132nla_put_failure:
1133	nlmsg_free(skb);
1134err_free_txskb:
1135	pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1136	ieee80211_free_txskb(hw, my_skb);
1137	data->tx_failed++;
1138}
1139
1140static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1141			       struct ieee80211_channel *c2)
1142{
1143	if (!c1 || !c2)
1144		return false;
1145
1146	return c1->center_freq == c2->center_freq;
1147}
1148
1149struct tx_iter_data {
1150	struct ieee80211_channel *channel;
1151	bool receive;
1152};
1153
1154static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1155				   struct ieee80211_vif *vif)
1156{
1157	struct tx_iter_data *data = _data;
1158
1159	if (!vif->chanctx_conf)
1160		return;
1161
1162	if (!hwsim_chans_compat(data->channel,
1163				rcu_dereference(vif->chanctx_conf)->def.chan))
1164		return;
1165
1166	data->receive = true;
1167}
1168
1169static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1170{
1171	/*
1172	 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1173	 * e.g. like this:
1174	 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1175	 * (but you should use a valid OUI, not that)
1176	 *
1177	 * If anyone wants to 'donate' a radiotap OUI/subns code
1178	 * please send a patch removing this #ifdef and changing
1179	 * the values accordingly.
1180	 */
1181#ifdef HWSIM_RADIOTAP_OUI
1182	struct ieee80211_vendor_radiotap *rtap;
1183
1184	/*
1185	 * Note that this code requires the headroom in the SKB
1186	 * that was allocated earlier.
1187	 */
1188	rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1189	rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1190	rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1191	rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1192	rtap->subns = 127;
1193
1194	/*
1195	 * Radiotap vendor namespaces can (and should) also be
1196	 * split into fields by using the standard radiotap
1197	 * presence bitmap mechanism. Use just BIT(0) here for
1198	 * the presence bitmap.
1199	 */
1200	rtap->present = BIT(0);
1201	/* We have 8 bytes of (dummy) data */
1202	rtap->len = 8;
1203	/* For testing, also require it to be aligned */
1204	rtap->align = 8;
1205	/* And also test that padding works, 4 bytes */
1206	rtap->pad = 4;
1207	/* push the data */
1208	memcpy(rtap->data, "ABCDEFGH", 8);
1209	/* make sure to clear padding, mac80211 doesn't */
1210	memset(rtap->data + 8, 0, 4);
1211
1212	IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1213#endif
1214}
1215
1216static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1217					  struct sk_buff *skb,
1218					  struct ieee80211_channel *chan)
1219{
1220	struct mac80211_hwsim_data *data = hw->priv, *data2;
1221	bool ack = false;
1222	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1223	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1224	struct ieee80211_rx_status rx_status;
1225	u64 now;
1226
1227	memset(&rx_status, 0, sizeof(rx_status));
1228	rx_status.flag |= RX_FLAG_MACTIME_START;
1229	rx_status.freq = chan->center_freq;
1230	rx_status.band = chan->band;
1231	if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1232		rx_status.rate_idx =
1233			ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1234		rx_status.nss =
1235			ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1236		rx_status.encoding = RX_ENC_VHT;
1237	} else {
1238		rx_status.rate_idx = info->control.rates[0].idx;
1239		if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1240			rx_status.encoding = RX_ENC_HT;
1241	}
1242	if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1243		rx_status.bw = RATE_INFO_BW_40;
1244	else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1245		rx_status.bw = RATE_INFO_BW_80;
1246	else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1247		rx_status.bw = RATE_INFO_BW_160;
1248	else
1249		rx_status.bw = RATE_INFO_BW_20;
1250	if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1251		rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1252	/* TODO: simulate real signal strength (and optional packet loss) */
1253	rx_status.signal = -50;
1254	if (info->control.vif)
1255		rx_status.signal += info->control.vif->bss_conf.txpower;
1256
1257	if (data->ps != PS_DISABLED)
1258		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1259
1260	/* release the skb's source info */
1261	skb_orphan(skb);
1262	skb_dst_drop(skb);
1263	skb->mark = 0;
1264	skb_ext_reset(skb);
1265	nf_reset_ct(skb);
1266
1267	/*
1268	 * Get absolute mactime here so all HWs RX at the "same time", and
1269	 * absolute TX time for beacon mactime so the timestamp matches.
1270	 * Giving beacons a different mactime than non-beacons looks messy, but
1271	 * it helps the Toffset be exact and a ~10us mactime discrepancy
1272	 * probably doesn't really matter.
1273	 */
1274	if (ieee80211_is_beacon(hdr->frame_control) ||
1275	    ieee80211_is_probe_resp(hdr->frame_control)) {
1276		rx_status.boottime_ns = ktime_get_boottime_ns();
1277		now = data->abs_bcn_ts;
1278	} else {
1279		now = mac80211_hwsim_get_tsf_raw();
1280	}
1281
1282	/* Copy skb to all enabled radios that are on the current frequency */
1283	spin_lock(&hwsim_radio_lock);
1284	list_for_each_entry(data2, &hwsim_radios, list) {
1285		struct sk_buff *nskb;
1286		struct tx_iter_data tx_iter_data = {
1287			.receive = false,
1288			.channel = chan,
1289		};
1290
1291		if (data == data2)
1292			continue;
1293
1294		if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1295		    !hwsim_ps_rx_ok(data2, skb))
1296			continue;
1297
1298		if (!(data->group & data2->group))
1299			continue;
1300
1301		if (data->netgroup != data2->netgroup)
1302			continue;
1303
1304		if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1305		    !hwsim_chans_compat(chan, data2->channel)) {
1306			ieee80211_iterate_active_interfaces_atomic(
1307				data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1308				mac80211_hwsim_tx_iter, &tx_iter_data);
1309			if (!tx_iter_data.receive)
1310				continue;
1311		}
1312
1313		/*
1314		 * reserve some space for our vendor and the normal
1315		 * radiotap header, since we're copying anyway
1316		 */
1317		if (skb->len < PAGE_SIZE && paged_rx) {
1318			struct page *page = alloc_page(GFP_ATOMIC);
1319
1320			if (!page)
1321				continue;
1322
1323			nskb = dev_alloc_skb(128);
1324			if (!nskb) {
1325				__free_page(page);
1326				continue;
1327			}
1328
1329			memcpy(page_address(page), skb->data, skb->len);
1330			skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1331		} else {
1332			nskb = skb_copy(skb, GFP_ATOMIC);
1333			if (!nskb)
1334				continue;
1335		}
1336
1337		if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1338			ack = true;
1339
1340		rx_status.mactime = now + data2->tsf_offset;
1341
1342		memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1343
1344		mac80211_hwsim_add_vendor_rtap(nskb);
1345
1346		data2->rx_pkts++;
1347		data2->rx_bytes += nskb->len;
1348		ieee80211_rx_irqsafe(data2->hw, nskb);
1349	}
1350	spin_unlock(&hwsim_radio_lock);
1351
1352	return ack;
1353}
1354
1355static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1356			      struct ieee80211_tx_control *control,
1357			      struct sk_buff *skb)
1358{
1359	struct mac80211_hwsim_data *data = hw->priv;
1360	struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1361	struct ieee80211_hdr *hdr = (void *)skb->data;
1362	struct ieee80211_chanctx_conf *chanctx_conf;
1363	struct ieee80211_channel *channel;
1364	bool ack;
1365	u32 _portid;
1366
1367	if (WARN_ON(skb->len < 10)) {
1368		/* Should not happen; just a sanity check for addr1 use */
1369		ieee80211_free_txskb(hw, skb);
1370		return;
1371	}
1372
1373	if (!data->use_chanctx) {
1374		channel = data->channel;
1375	} else if (txi->hw_queue == 4) {
1376		channel = data->tmp_chan;
1377	} else {
1378		chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1379		if (chanctx_conf)
1380			channel = chanctx_conf->def.chan;
1381		else
1382			channel = NULL;
1383	}
1384
1385	if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1386		ieee80211_free_txskb(hw, skb);
1387		return;
1388	}
1389
1390	if (data->idle && !data->tmp_chan) {
1391		wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1392		ieee80211_free_txskb(hw, skb);
1393		return;
1394	}
1395
1396	if (txi->control.vif)
1397		hwsim_check_magic(txi->control.vif);
1398	if (control->sta)
1399		hwsim_check_sta_magic(control->sta);
1400
1401	if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1402		ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1403				       txi->control.rates,
1404				       ARRAY_SIZE(txi->control.rates));
1405
1406	if (skb->len >= 24 + 8 &&
1407	    ieee80211_is_probe_resp(hdr->frame_control)) {
1408		/* fake header transmission time */
1409		struct ieee80211_mgmt *mgmt;
1410		struct ieee80211_rate *txrate;
1411		u64 ts;
1412
1413		mgmt = (struct ieee80211_mgmt *)skb->data;
1414		txrate = ieee80211_get_tx_rate(hw, txi);
1415		ts = mac80211_hwsim_get_tsf_raw();
1416		mgmt->u.probe_resp.timestamp =
1417			cpu_to_le64(ts + data->tsf_offset +
1418				    24 * 8 * 10 / txrate->bitrate);
1419	}
1420
1421	mac80211_hwsim_monitor_rx(hw, skb, channel);
1422
1423	/* wmediumd mode check */
1424	_portid = READ_ONCE(data->wmediumd);
1425
1426	if (_portid)
1427		return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1428
1429	/* NO wmediumd detected, perfect medium simulation */
1430	data->tx_pkts++;
1431	data->tx_bytes += skb->len;
1432	ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1433
1434	if (ack && skb->len >= 16)
1435		mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1436
1437	ieee80211_tx_info_clear_status(txi);
1438
1439	/* frame was transmitted at most favorable rate at first attempt */
1440	txi->control.rates[0].count = 1;
1441	txi->control.rates[1].idx = -1;
1442
1443	if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1444		txi->flags |= IEEE80211_TX_STAT_ACK;
1445	ieee80211_tx_status_irqsafe(hw, skb);
1446}
1447
1448
1449static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1450{
1451	struct mac80211_hwsim_data *data = hw->priv;
1452	wiphy_dbg(hw->wiphy, "%s\n", __func__);
1453	data->started = true;
1454	return 0;
1455}
1456
1457
1458static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1459{
1460	struct mac80211_hwsim_data *data = hw->priv;
1461	data->started = false;
1462	hrtimer_cancel(&data->beacon_timer);
1463	wiphy_dbg(hw->wiphy, "%s\n", __func__);
1464}
1465
1466
1467static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1468					struct ieee80211_vif *vif)
1469{
1470	wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1471		  __func__, ieee80211_vif_type_p2p(vif),
1472		  vif->addr);
1473	hwsim_set_magic(vif);
1474
1475	vif->cab_queue = 0;
1476	vif->hw_queue[IEEE80211_AC_VO] = 0;
1477	vif->hw_queue[IEEE80211_AC_VI] = 1;
1478	vif->hw_queue[IEEE80211_AC_BE] = 2;
1479	vif->hw_queue[IEEE80211_AC_BK] = 3;
1480
1481	return 0;
1482}
1483
1484
1485static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1486					   struct ieee80211_vif *vif,
1487					   enum nl80211_iftype newtype,
1488					   bool newp2p)
1489{
1490	newtype = ieee80211_iftype_p2p(newtype, newp2p);
1491	wiphy_dbg(hw->wiphy,
1492		  "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1493		  __func__, ieee80211_vif_type_p2p(vif),
1494		    newtype, vif->addr);
1495	hwsim_check_magic(vif);
1496
1497	/*
1498	 * interface may change from non-AP to AP in
1499	 * which case this needs to be set up again
1500	 */
1501	vif->cab_queue = 0;
1502
1503	return 0;
1504}
1505
1506static void mac80211_hwsim_remove_interface(
1507	struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1508{
1509	wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1510		  __func__, ieee80211_vif_type_p2p(vif),
1511		  vif->addr);
1512	hwsim_check_magic(vif);
1513	hwsim_clear_magic(vif);
1514}
1515
1516static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1517				    struct sk_buff *skb,
1518				    struct ieee80211_channel *chan)
1519{
1520	struct mac80211_hwsim_data *data = hw->priv;
1521	u32 _pid = READ_ONCE(data->wmediumd);
1522
1523	if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1524		struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1525		ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1526				       txi->control.rates,
1527				       ARRAY_SIZE(txi->control.rates));
1528	}
1529
1530	mac80211_hwsim_monitor_rx(hw, skb, chan);
1531
1532	if (_pid)
1533		return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1534
1535	mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1536	dev_kfree_skb(skb);
1537}
1538
1539static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1540				     struct ieee80211_vif *vif)
1541{
1542	struct mac80211_hwsim_data *data = arg;
1543	struct ieee80211_hw *hw = data->hw;
1544	struct ieee80211_tx_info *info;
1545	struct ieee80211_rate *txrate;
1546	struct ieee80211_mgmt *mgmt;
1547	struct sk_buff *skb;
1548
1549	hwsim_check_magic(vif);
1550
1551	if (vif->type != NL80211_IFTYPE_AP &&
1552	    vif->type != NL80211_IFTYPE_MESH_POINT &&
1553	    vif->type != NL80211_IFTYPE_ADHOC)
1554		return;
1555
1556	skb = ieee80211_beacon_get(hw, vif);
1557	if (skb == NULL)
1558		return;
1559	info = IEEE80211_SKB_CB(skb);
1560	if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1561		ieee80211_get_tx_rates(vif, NULL, skb,
1562				       info->control.rates,
1563				       ARRAY_SIZE(info->control.rates));
1564
1565	txrate = ieee80211_get_tx_rate(hw, info);
1566
1567	mgmt = (struct ieee80211_mgmt *) skb->data;
1568	/* fake header transmission time */
1569	data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1570	mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1571					       data->tsf_offset +
1572					       24 * 8 * 10 / txrate->bitrate);
1573
1574	mac80211_hwsim_tx_frame(hw, skb,
1575				rcu_dereference(vif->chanctx_conf)->def.chan);
1576
1577	if (vif->csa_active && ieee80211_csa_is_complete(vif))
1578		ieee80211_csa_finish(vif);
1579}
1580
1581static enum hrtimer_restart
1582mac80211_hwsim_beacon(struct hrtimer *timer)
1583{
1584	struct mac80211_hwsim_data *data =
1585		container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1586	struct ieee80211_hw *hw = data->hw;
1587	u64 bcn_int = data->beacon_int;
1588
1589	if (!data->started)
1590		return HRTIMER_NORESTART;
1591
1592	ieee80211_iterate_active_interfaces_atomic(
1593		hw, IEEE80211_IFACE_ITER_NORMAL,
1594		mac80211_hwsim_beacon_tx, data);
1595
1596	/* beacon at new TBTT + beacon interval */
1597	if (data->bcn_delta) {
1598		bcn_int -= data->bcn_delta;
1599		data->bcn_delta = 0;
1600	}
1601	hrtimer_forward(&data->beacon_timer, hrtimer_get_expires(timer),
1602			ns_to_ktime(bcn_int * NSEC_PER_USEC));
1603	return HRTIMER_RESTART;
1604}
1605
1606static const char * const hwsim_chanwidths[] = {
1607	[NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1608	[NL80211_CHAN_WIDTH_20] = "ht20",
1609	[NL80211_CHAN_WIDTH_40] = "ht40",
1610	[NL80211_CHAN_WIDTH_80] = "vht80",
1611	[NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1612	[NL80211_CHAN_WIDTH_160] = "vht160",
1613};
1614
1615static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1616{
1617	struct mac80211_hwsim_data *data = hw->priv;
1618	struct ieee80211_conf *conf = &hw->conf;
1619	static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1620		[IEEE80211_SMPS_AUTOMATIC] = "auto",
1621		[IEEE80211_SMPS_OFF] = "off",
1622		[IEEE80211_SMPS_STATIC] = "static",
1623		[IEEE80211_SMPS_DYNAMIC] = "dynamic",
1624	};
1625	int idx;
1626
1627	if (conf->chandef.chan)
1628		wiphy_dbg(hw->wiphy,
1629			  "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1630			  __func__,
1631			  conf->chandef.chan->center_freq,
1632			  conf->chandef.center_freq1,
1633			  conf->chandef.center_freq2,
1634			  hwsim_chanwidths[conf->chandef.width],
1635			  !!(conf->flags & IEEE80211_CONF_IDLE),
1636			  !!(conf->flags & IEEE80211_CONF_PS),
1637			  smps_modes[conf->smps_mode]);
1638	else
1639		wiphy_dbg(hw->wiphy,
1640			  "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1641			  __func__,
1642			  !!(conf->flags & IEEE80211_CONF_IDLE),
1643			  !!(conf->flags & IEEE80211_CONF_PS),
1644			  smps_modes[conf->smps_mode]);
1645
1646	data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1647
1648	WARN_ON(conf->chandef.chan && data->use_chanctx);
1649
1650	mutex_lock(&data->mutex);
1651	if (data->scanning && conf->chandef.chan) {
1652		for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1653			if (data->survey_data[idx].channel == data->channel) {
1654				data->survey_data[idx].start =
1655					data->survey_data[idx].next_start;
1656				data->survey_data[idx].end = jiffies;
1657				break;
1658			}
1659		}
1660
1661		data->channel = conf->chandef.chan;
1662
1663		for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1664			if (data->survey_data[idx].channel &&
1665			    data->survey_data[idx].channel != data->channel)
1666				continue;
1667			data->survey_data[idx].channel = data->channel;
1668			data->survey_data[idx].next_start = jiffies;
1669			break;
1670		}
1671	} else {
1672		data->channel = conf->chandef.chan;
1673	}
1674	mutex_unlock(&data->mutex);
1675
1676	if (!data->started || !data->beacon_int)
1677		hrtimer_cancel(&data->beacon_timer);
1678	else if (!hrtimer_is_queued(&data->beacon_timer)) {
1679		u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1680		u32 bcn_int = data->beacon_int;
1681		u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1682
1683		hrtimer_start(&data->beacon_timer,
1684			      ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1685			      HRTIMER_MODE_REL_SOFT);
1686	}
1687
1688	return 0;
1689}
1690
1691
1692static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1693					    unsigned int changed_flags,
1694					    unsigned int *total_flags,u64 multicast)
1695{
1696	struct mac80211_hwsim_data *data = hw->priv;
1697
1698	wiphy_dbg(hw->wiphy, "%s\n", __func__);
1699
1700	data->rx_filter = 0;
1701	if (*total_flags & FIF_ALLMULTI)
1702		data->rx_filter |= FIF_ALLMULTI;
1703
1704	*total_flags = data->rx_filter;
1705}
1706
1707static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1708				       struct ieee80211_vif *vif)
1709{
1710	unsigned int *count = data;
1711	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1712
1713	if (vp->bcn_en)
1714		(*count)++;
1715}
1716
1717static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1718					    struct ieee80211_vif *vif,
1719					    struct ieee80211_bss_conf *info,
1720					    u32 changed)
1721{
1722	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1723	struct mac80211_hwsim_data *data = hw->priv;
1724
1725	hwsim_check_magic(vif);
1726
1727	wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1728		  __func__, changed, vif->addr);
1729
1730	if (changed & BSS_CHANGED_BSSID) {
1731		wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1732			  __func__, info->bssid);
1733		memcpy(vp->bssid, info->bssid, ETH_ALEN);
1734	}
1735
1736	if (changed & BSS_CHANGED_ASSOC) {
1737		wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1738			  info->assoc, info->aid);
1739		vp->assoc = info->assoc;
1740		vp->aid = info->aid;
1741	}
1742
1743	if (changed & BSS_CHANGED_BEACON_ENABLED) {
1744		wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1745			  info->enable_beacon, info->beacon_int);
1746		vp->bcn_en = info->enable_beacon;
1747		if (data->started &&
1748		    !hrtimer_is_queued(&data->beacon_timer) &&
1749		    info->enable_beacon) {
1750			u64 tsf, until_tbtt;
1751			u32 bcn_int;
1752			data->beacon_int = info->beacon_int * 1024;
1753			tsf = mac80211_hwsim_get_tsf(hw, vif);
1754			bcn_int = data->beacon_int;
1755			until_tbtt = bcn_int - do_div(tsf, bcn_int);
1756
1757			hrtimer_start(&data->beacon_timer,
1758				      ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1759				      HRTIMER_MODE_REL_SOFT);
1760		} else if (!info->enable_beacon) {
1761			unsigned int count = 0;
1762			ieee80211_iterate_active_interfaces_atomic(
1763				data->hw, IEEE80211_IFACE_ITER_NORMAL,
1764				mac80211_hwsim_bcn_en_iter, &count);
1765			wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
1766				  count);
1767			if (count == 0) {
1768				hrtimer_cancel(&data->beacon_timer);
1769				data->beacon_int = 0;
1770			}
1771		}
1772	}
1773
1774	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1775		wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1776			  info->use_cts_prot);
1777	}
1778
1779	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1780		wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1781			  info->use_short_preamble);
1782	}
1783
1784	if (changed & BSS_CHANGED_ERP_SLOT) {
1785		wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1786	}
1787
1788	if (changed & BSS_CHANGED_HT) {
1789		wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
1790			  info->ht_operation_mode);
1791	}
1792
1793	if (changed & BSS_CHANGED_BASIC_RATES) {
1794		wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1795			  (unsigned long long) info->basic_rates);
1796	}
1797
1798	if (changed & BSS_CHANGED_TXPOWER)
1799		wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1800}
1801
1802static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1803				  struct ieee80211_vif *vif,
1804				  struct ieee80211_sta *sta)
1805{
1806	hwsim_check_magic(vif);
1807	hwsim_set_sta_magic(sta);
1808
1809	return 0;
1810}
1811
1812static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1813				     struct ieee80211_vif *vif,
1814				     struct ieee80211_sta *sta)
1815{
1816	hwsim_check_magic(vif);
1817	hwsim_clear_sta_magic(sta);
1818
1819	return 0;
1820}
1821
1822static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1823				      struct ieee80211_vif *vif,
1824				      enum sta_notify_cmd cmd,
1825				      struct ieee80211_sta *sta)
1826{
1827	hwsim_check_magic(vif);
1828
1829	switch (cmd) {
1830	case STA_NOTIFY_SLEEP:
1831	case STA_NOTIFY_AWAKE:
1832		/* TODO: make good use of these flags */
1833		break;
1834	default:
1835		WARN(1, "Invalid sta notify: %d\n", cmd);
1836		break;
1837	}
1838}
1839
1840static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1841				  struct ieee80211_sta *sta,
1842				  bool set)
1843{
1844	hwsim_check_sta_magic(sta);
1845	return 0;
1846}
1847
1848static int mac80211_hwsim_conf_tx(
1849	struct ieee80211_hw *hw,
1850	struct ieee80211_vif *vif, u16 queue,
1851	const struct ieee80211_tx_queue_params *params)
1852{
1853	wiphy_dbg(hw->wiphy,
1854		  "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1855		  __func__, queue,
1856		  params->txop, params->cw_min,
1857		  params->cw_max, params->aifs);
1858	return 0;
1859}
1860
1861static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1862				     struct survey_info *survey)
1863{
1864	struct mac80211_hwsim_data *hwsim = hw->priv;
1865
1866	if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1867		return -ENOENT;
1868
1869	mutex_lock(&hwsim->mutex);
1870	survey->channel = hwsim->survey_data[idx].channel;
1871	if (!survey->channel) {
1872		mutex_unlock(&hwsim->mutex);
1873		return -ENOENT;
1874	}
1875
1876	/*
1877	 * Magically conjured dummy values --- this is only ok for simulated hardware.
1878	 *
1879	 * A real driver which cannot determine real values noise MUST NOT
1880	 * report any, especially not a magically conjured ones :-)
1881	 */
1882	survey->filled = SURVEY_INFO_NOISE_DBM |
1883			 SURVEY_INFO_TIME |
1884			 SURVEY_INFO_TIME_BUSY;
1885	survey->noise = -92;
1886	survey->time =
1887		jiffies_to_msecs(hwsim->survey_data[idx].end -
1888				 hwsim->survey_data[idx].start);
1889	/* report 12.5% of channel time is used */
1890	survey->time_busy = survey->time/8;
1891	mutex_unlock(&hwsim->mutex);
1892
1893	return 0;
1894}
1895
1896#ifdef CONFIG_NL80211_TESTMODE
1897/*
1898 * This section contains example code for using netlink
1899 * attributes with the testmode command in nl80211.
1900 */
1901
1902/* These enums need to be kept in sync with userspace */
1903enum hwsim_testmode_attr {
1904	__HWSIM_TM_ATTR_INVALID	= 0,
1905	HWSIM_TM_ATTR_CMD	= 1,
1906	HWSIM_TM_ATTR_PS	= 2,
1907
1908	/* keep last */
1909	__HWSIM_TM_ATTR_AFTER_LAST,
1910	HWSIM_TM_ATTR_MAX	= __HWSIM_TM_ATTR_AFTER_LAST - 1
1911};
1912
1913enum hwsim_testmode_cmd {
1914	HWSIM_TM_CMD_SET_PS		= 0,
1915	HWSIM_TM_CMD_GET_PS		= 1,
1916	HWSIM_TM_CMD_STOP_QUEUES	= 2,
1917	HWSIM_TM_CMD_WAKE_QUEUES	= 3,
1918};
1919
1920static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1921	[HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1922	[HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1923};
1924
1925static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1926				       struct ieee80211_vif *vif,
1927				       void *data, int len)
1928{
1929	struct mac80211_hwsim_data *hwsim = hw->priv;
1930	struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1931	struct sk_buff *skb;
1932	int err, ps;
1933
1934	err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
1935				   hwsim_testmode_policy, NULL);
1936	if (err)
1937		return err;
1938
1939	if (!tb[HWSIM_TM_ATTR_CMD])
1940		return -EINVAL;
1941
1942	switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1943	case HWSIM_TM_CMD_SET_PS:
1944		if (!tb[HWSIM_TM_ATTR_PS])
1945			return -EINVAL;
1946		ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1947		return hwsim_fops_ps_write(hwsim, ps);
1948	case HWSIM_TM_CMD_GET_PS:
1949		skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1950						nla_total_size(sizeof(u32)));
1951		if (!skb)
1952			return -ENOMEM;
1953		if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1954			goto nla_put_failure;
1955		return cfg80211_testmode_reply(skb);
1956	case HWSIM_TM_CMD_STOP_QUEUES:
1957		ieee80211_stop_queues(hw);
1958		return 0;
1959	case HWSIM_TM_CMD_WAKE_QUEUES:
1960		ieee80211_wake_queues(hw);
1961		return 0;
1962	default:
1963		return -EOPNOTSUPP;
1964	}
1965
1966 nla_put_failure:
1967	kfree_skb(skb);
1968	return -ENOBUFS;
1969}
1970#endif
1971
1972static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1973				       struct ieee80211_vif *vif,
1974				       struct ieee80211_ampdu_params *params)
1975{
1976	struct ieee80211_sta *sta = params->sta;
1977	enum ieee80211_ampdu_mlme_action action = params->action;
1978	u16 tid = params->tid;
1979
1980	switch (action) {
1981	case IEEE80211_AMPDU_TX_START:
1982		ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1983		break;
1984	case IEEE80211_AMPDU_TX_STOP_CONT:
1985	case IEEE80211_AMPDU_TX_STOP_FLUSH:
1986	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1987		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1988		break;
1989	case IEEE80211_AMPDU_TX_OPERATIONAL:
1990		break;
1991	case IEEE80211_AMPDU_RX_START:
1992	case IEEE80211_AMPDU_RX_STOP:
1993		break;
1994	default:
1995		return -EOPNOTSUPP;
1996	}
1997
1998	return 0;
1999}
2000
2001static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2002				 struct ieee80211_vif *vif,
2003				 u32 queues, bool drop)
2004{
2005	/* Not implemented, queues only on kernel side */
2006}
2007
2008static void hw_scan_work(struct work_struct *work)
2009{
2010	struct mac80211_hwsim_data *hwsim =
2011		container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2012	struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2013	int dwell, i;
2014
2015	mutex_lock(&hwsim->mutex);
2016	if (hwsim->scan_chan_idx >= req->n_channels) {
2017		struct cfg80211_scan_info info = {
2018			.aborted = false,
2019		};
2020
2021		wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2022		ieee80211_scan_completed(hwsim->hw, &info);
2023		hwsim->hw_scan_request = NULL;
2024		hwsim->hw_scan_vif = NULL;
2025		hwsim->tmp_chan = NULL;
2026		mutex_unlock(&hwsim->mutex);
2027		return;
2028	}
2029
2030	wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2031		  req->channels[hwsim->scan_chan_idx]->center_freq);
2032
2033	hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2034	if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2035				      IEEE80211_CHAN_RADAR) ||
2036	    !req->n_ssids) {
2037		dwell = 120;
2038	} else {
2039		dwell = 30;
2040		/* send probes */
2041		for (i = 0; i < req->n_ssids; i++) {
2042			struct sk_buff *probe;
2043			struct ieee80211_mgmt *mgmt;
2044
2045			probe = ieee80211_probereq_get(hwsim->hw,
2046						       hwsim->scan_addr,
2047						       req->ssids[i].ssid,
2048						       req->ssids[i].ssid_len,
2049						       req->ie_len);
2050			if (!probe)
2051				continue;
2052
2053			mgmt = (struct ieee80211_mgmt *) probe->data;
2054			memcpy(mgmt->da, req->bssid, ETH_ALEN);
2055			memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2056
2057			if (req->ie_len)
2058				skb_put_data(probe, req->ie, req->ie_len);
2059
2060			local_bh_disable();
2061			mac80211_hwsim_tx_frame(hwsim->hw, probe,
2062						hwsim->tmp_chan);
2063			local_bh_enable();
2064		}
2065	}
2066	ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2067				     msecs_to_jiffies(dwell));
2068	hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2069	hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2070	hwsim->survey_data[hwsim->scan_chan_idx].end =
2071		jiffies + msecs_to_jiffies(dwell);
2072	hwsim->scan_chan_idx++;
2073	mutex_unlock(&hwsim->mutex);
2074}
2075
2076static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2077				  struct ieee80211_vif *vif,
2078				  struct ieee80211_scan_request *hw_req)
2079{
2080	struct mac80211_hwsim_data *hwsim = hw->priv;
2081	struct cfg80211_scan_request *req = &hw_req->req;
2082
2083	mutex_lock(&hwsim->mutex);
2084	if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2085		mutex_unlock(&hwsim->mutex);
2086		return -EBUSY;
2087	}
2088	hwsim->hw_scan_request = req;
2089	hwsim->hw_scan_vif = vif;
2090	hwsim->scan_chan_idx = 0;
2091	if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2092		get_random_mask_addr(hwsim->scan_addr,
2093				     hw_req->req.mac_addr,
2094				     hw_req->req.mac_addr_mask);
2095	else
2096		memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2097	memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2098	mutex_unlock(&hwsim->mutex);
2099
2100	wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2101
2102	ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2103
2104	return 0;
2105}
2106
2107static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2108					  struct ieee80211_vif *vif)
2109{
2110	struct mac80211_hwsim_data *hwsim = hw->priv;
2111	struct cfg80211_scan_info info = {
2112		.aborted = true,
2113	};
2114
2115	wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2116
2117	cancel_delayed_work_sync(&hwsim->hw_scan);
2118
2119	mutex_lock(&hwsim->mutex);
2120	ieee80211_scan_completed(hwsim->hw, &info);
2121	hwsim->tmp_chan = NULL;
2122	hwsim->hw_scan_request = NULL;
2123	hwsim->hw_scan_vif = NULL;
2124	mutex_unlock(&hwsim->mutex);
2125}
2126
2127static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2128				   struct ieee80211_vif *vif,
2129				   const u8 *mac_addr)
2130{
2131	struct mac80211_hwsim_data *hwsim = hw->priv;
2132
2133	mutex_lock(&hwsim->mutex);
2134
2135	if (hwsim->scanning) {
2136		pr_debug("two hwsim sw_scans detected!\n");
2137		goto out;
2138	}
2139
2140	pr_debug("hwsim sw_scan request, prepping stuff\n");
2141
2142	memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2143	hwsim->scanning = true;
2144	memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2145
2146out:
2147	mutex_unlock(&hwsim->mutex);
2148}
2149
2150static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2151					    struct ieee80211_vif *vif)
2152{
2153	struct mac80211_hwsim_data *hwsim = hw->priv;
2154
2155	mutex_lock(&hwsim->mutex);
2156
2157	pr_debug("hwsim sw_scan_complete\n");
2158	hwsim->scanning = false;
2159	eth_zero_addr(hwsim->scan_addr);
2160
2161	mutex_unlock(&hwsim->mutex);
2162}
2163
2164static void hw_roc_start(struct work_struct *work)
2165{
2166	struct mac80211_hwsim_data *hwsim =
2167		container_of(work, struct mac80211_hwsim_data, roc_start.work);
2168
2169	mutex_lock(&hwsim->mutex);
2170
2171	wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2172	hwsim->tmp_chan = hwsim->roc_chan;
2173	ieee80211_ready_on_channel(hwsim->hw);
2174
2175	ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2176				     msecs_to_jiffies(hwsim->roc_duration));
2177
2178	mutex_unlock(&hwsim->mutex);
2179}
2180
2181static void hw_roc_done(struct work_struct *work)
2182{
2183	struct mac80211_hwsim_data *hwsim =
2184		container_of(work, struct mac80211_hwsim_data, roc_done.work);
2185
2186	mutex_lock(&hwsim->mutex);
2187	ieee80211_remain_on_channel_expired(hwsim->hw);
2188	hwsim->tmp_chan = NULL;
2189	mutex_unlock(&hwsim->mutex);
2190
2191	wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2192}
2193
2194static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2195			      struct ieee80211_vif *vif,
2196			      struct ieee80211_channel *chan,
2197			      int duration,
2198			      enum ieee80211_roc_type type)
2199{
2200	struct mac80211_hwsim_data *hwsim = hw->priv;
2201
2202	mutex_lock(&hwsim->mutex);
2203	if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2204		mutex_unlock(&hwsim->mutex);
2205		return -EBUSY;
2206	}
2207
2208	hwsim->roc_chan = chan;
2209	hwsim->roc_duration = duration;
2210	mutex_unlock(&hwsim->mutex);
2211
2212	wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2213		  chan->center_freq, duration);
2214	ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2215
2216	return 0;
2217}
2218
2219static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2220			       struct ieee80211_vif *vif)
2221{
2222	struct mac80211_hwsim_data *hwsim = hw->priv;
2223
2224	cancel_delayed_work_sync(&hwsim->roc_start);
2225	cancel_delayed_work_sync(&hwsim->roc_done);
2226
2227	mutex_lock(&hwsim->mutex);
2228	hwsim->tmp_chan = NULL;
2229	mutex_unlock(&hwsim->mutex);
2230
2231	wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2232
2233	return 0;
2234}
2235
2236static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2237				      struct ieee80211_chanctx_conf *ctx)
2238{
2239	hwsim_set_chanctx_magic(ctx);
2240	wiphy_dbg(hw->wiphy,
2241		  "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2242		  ctx->def.chan->center_freq, ctx->def.width,
2243		  ctx->def.center_freq1, ctx->def.center_freq2);
2244	return 0;
2245}
2246
2247static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2248					  struct ieee80211_chanctx_conf *ctx)
2249{
2250	wiphy_dbg(hw->wiphy,
2251		  "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2252		  ctx->def.chan->center_freq, ctx->def.width,
2253		  ctx->def.center_freq1, ctx->def.center_freq2);
2254	hwsim_check_chanctx_magic(ctx);
2255	hwsim_clear_chanctx_magic(ctx);
2256}
2257
2258static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2259					  struct ieee80211_chanctx_conf *ctx,
2260					  u32 changed)
2261{
2262	hwsim_check_chanctx_magic(ctx);
2263	wiphy_dbg(hw->wiphy,
2264		  "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2265		  ctx->def.chan->center_freq, ctx->def.width,
2266		  ctx->def.center_freq1, ctx->def.center_freq2);
2267}
2268
2269static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2270					     struct ieee80211_vif *vif,
2271					     struct ieee80211_chanctx_conf *ctx)
2272{
2273	hwsim_check_magic(vif);
2274	hwsim_check_chanctx_magic(ctx);
2275
2276	return 0;
2277}
2278
2279static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2280						struct ieee80211_vif *vif,
2281						struct ieee80211_chanctx_conf *ctx)
2282{
2283	hwsim_check_magic(vif);
2284	hwsim_check_chanctx_magic(ctx);
2285}
2286
2287static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2288	"tx_pkts_nic",
2289	"tx_bytes_nic",
2290	"rx_pkts_nic",
2291	"rx_bytes_nic",
2292	"d_tx_dropped",
2293	"d_tx_failed",
2294	"d_ps_mode",
2295	"d_group",
2296};
2297
2298#define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2299
2300static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2301					  struct ieee80211_vif *vif,
2302					  u32 sset, u8 *data)
2303{
2304	if (sset == ETH_SS_STATS)
2305		memcpy(data, *mac80211_hwsim_gstrings_stats,
2306		       sizeof(mac80211_hwsim_gstrings_stats));
2307}
2308
2309static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2310					    struct ieee80211_vif *vif, int sset)
2311{
2312	if (sset == ETH_SS_STATS)
2313		return MAC80211_HWSIM_SSTATS_LEN;
2314	return 0;
2315}
2316
2317static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2318					struct ieee80211_vif *vif,
2319					struct ethtool_stats *stats, u64 *data)
2320{
2321	struct mac80211_hwsim_data *ar = hw->priv;
2322	int i = 0;
2323
2324	data[i++] = ar->tx_pkts;
2325	data[i++] = ar->tx_bytes;
2326	data[i++] = ar->rx_pkts;
2327	data[i++] = ar->rx_bytes;
2328	data[i++] = ar->tx_dropped;
2329	data[i++] = ar->tx_failed;
2330	data[i++] = ar->ps;
2331	data[i++] = ar->group;
2332
2333	WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2334}
2335
2336#define HWSIM_COMMON_OPS					\
2337	.tx = mac80211_hwsim_tx,				\
2338	.start = mac80211_hwsim_start,				\
2339	.stop = mac80211_hwsim_stop,				\
2340	.add_interface = mac80211_hwsim_add_interface,		\
2341	.change_interface = mac80211_hwsim_change_interface,	\
2342	.remove_interface = mac80211_hwsim_remove_interface,	\
2343	.config = mac80211_hwsim_config,			\
2344	.configure_filter = mac80211_hwsim_configure_filter,	\
2345	.bss_info_changed = mac80211_hwsim_bss_info_changed,	\
2346	.sta_add = mac80211_hwsim_sta_add,			\
2347	.sta_remove = mac80211_hwsim_sta_remove,		\
2348	.sta_notify = mac80211_hwsim_sta_notify,		\
2349	.set_tim = mac80211_hwsim_set_tim,			\
2350	.conf_tx = mac80211_hwsim_conf_tx,			\
2351	.get_survey = mac80211_hwsim_get_survey,		\
2352	CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)	\
2353	.ampdu_action = mac80211_hwsim_ampdu_action,		\
2354	.flush = mac80211_hwsim_flush,				\
2355	.get_tsf = mac80211_hwsim_get_tsf,			\
2356	.set_tsf = mac80211_hwsim_set_tsf,			\
2357	.get_et_sset_count = mac80211_hwsim_get_et_sset_count,	\
2358	.get_et_stats = mac80211_hwsim_get_et_stats,		\
2359	.get_et_strings = mac80211_hwsim_get_et_strings,
2360
2361static const struct ieee80211_ops mac80211_hwsim_ops = {
2362	HWSIM_COMMON_OPS
2363	.sw_scan_start = mac80211_hwsim_sw_scan,
2364	.sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2365};
2366
2367static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2368	HWSIM_COMMON_OPS
2369	.hw_scan = mac80211_hwsim_hw_scan,
2370	.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2371	.sw_scan_start = NULL,
2372	.sw_scan_complete = NULL,
2373	.remain_on_channel = mac80211_hwsim_roc,
2374	.cancel_remain_on_channel = mac80211_hwsim_croc,
2375	.add_chanctx = mac80211_hwsim_add_chanctx,
2376	.remove_chanctx = mac80211_hwsim_remove_chanctx,
2377	.change_chanctx = mac80211_hwsim_change_chanctx,
2378	.assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2379	.unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2380};
2381
2382struct hwsim_new_radio_params {
2383	unsigned int channels;
2384	const char *reg_alpha2;
2385	const struct ieee80211_regdomain *regd;
2386	bool reg_strict;
2387	bool p2p_device;
2388	bool use_chanctx;
2389	bool destroy_on_close;
2390	const char *hwname;
2391	bool no_vif;
2392	const u8 *perm_addr;
2393	u32 iftypes;
2394	u32 *ciphers;
2395	u8 n_ciphers;
2396};
2397
2398static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2399				   struct genl_info *info)
2400{
2401	if (info)
2402		genl_notify(&hwsim_genl_family, mcast_skb, info,
2403			    HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2404	else
2405		genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2406				  HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2407}
2408
2409static int append_radio_msg(struct sk_buff *skb, int id,
2410			    struct hwsim_new_radio_params *param)
2411{
2412	int ret;
2413
2414	ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2415	if (ret < 0)
2416		return ret;
2417
2418	if (param->channels) {
2419		ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2420		if (ret < 0)
2421			return ret;
2422	}
2423
2424	if (param->reg_alpha2) {
2425		ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2426			      param->reg_alpha2);
2427		if (ret < 0)
2428			return ret;
2429	}
2430
2431	if (param->regd) {
2432		int i;
2433
2434		for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2435			if (hwsim_world_regdom_custom[i] != param->regd)
2436				continue;
2437
2438			ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2439			if (ret < 0)
2440				return ret;
2441			break;
2442		}
2443	}
2444
2445	if (param->reg_strict) {
2446		ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2447		if (ret < 0)
2448			return ret;
2449	}
2450
2451	if (param->p2p_device) {
2452		ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2453		if (ret < 0)
2454			return ret;
2455	}
2456
2457	if (param->use_chanctx) {
2458		ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2459		if (ret < 0)
2460			return ret;
2461	}
2462
2463	if (param->hwname) {
2464		ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2465			      strlen(param->hwname), param->hwname);
2466		if (ret < 0)
2467			return ret;
2468	}
2469
2470	return 0;
2471}
2472
2473static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2474				  struct hwsim_new_radio_params *param)
2475{
2476	struct sk_buff *mcast_skb;
2477	void *data;
2478
2479	mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2480	if (!mcast_skb)
2481		return;
2482
2483	data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2484			   HWSIM_CMD_NEW_RADIO);
2485	if (!data)
2486		goto out_err;
2487
2488	if (append_radio_msg(mcast_skb, id, param) < 0)
2489		goto out_err;
2490
2491	genlmsg_end(mcast_skb, data);
2492
2493	hwsim_mcast_config_msg(mcast_skb, info);
2494	return;
2495
2496out_err:
2497	nlmsg_free(mcast_skb);
2498}
2499
2500static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2501	{
2502		/* TODO: should we support other types, e.g., P2P?*/
2503		.types_mask = BIT(NL80211_IFTYPE_STATION) |
2504			      BIT(NL80211_IFTYPE_AP),
2505		.he_cap = {
2506			.has_he = true,
2507			.he_cap_elem = {
2508				.mac_cap_info[0] =
2509					IEEE80211_HE_MAC_CAP0_HTC_HE,
2510				.mac_cap_info[1] =
2511					IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2512					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2513				.mac_cap_info[2] =
2514					IEEE80211_HE_MAC_CAP2_BSR |
2515					IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2516					IEEE80211_HE_MAC_CAP2_ACK_EN,
2517				.mac_cap_info[3] =
2518					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2519					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2520				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2521				.phy_cap_info[1] =
2522					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2523					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2524					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2525					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2526				.phy_cap_info[2] =
2527					IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2528					IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2529					IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2530					IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2531					IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2532
2533				/* Leave all the other PHY capability bytes
2534				 * unset, as DCM, beam forming, RU and PPE
2535				 * threshold information are not supported
2536				 */
2537			},
2538			.he_mcs_nss_supp = {
2539				.rx_mcs_80 = cpu_to_le16(0xfffa),
2540				.tx_mcs_80 = cpu_to_le16(0xfffa),
2541				.rx_mcs_160 = cpu_to_le16(0xffff),
2542				.tx_mcs_160 = cpu_to_le16(0xffff),
2543				.rx_mcs_80p80 = cpu_to_le16(0xffff),
2544				.tx_mcs_80p80 = cpu_to_le16(0xffff),
2545			},
2546		},
2547	},
2548#ifdef CONFIG_MAC80211_MESH
2549	{
2550		/* TODO: should we support other types, e.g., IBSS?*/
2551		.types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2552		.he_cap = {
2553			.has_he = true,
2554			.he_cap_elem = {
2555				.mac_cap_info[0] =
2556					IEEE80211_HE_MAC_CAP0_HTC_HE,
2557				.mac_cap_info[1] =
2558					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2559				.mac_cap_info[2] =
2560					IEEE80211_HE_MAC_CAP2_ACK_EN,
2561				.mac_cap_info[3] =
2562					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2563					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2564				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2565				.phy_cap_info[1] =
2566					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2567					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2568					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2569					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2570				.phy_cap_info[2] = 0,
2571
2572				/* Leave all the other PHY capability bytes
2573				 * unset, as DCM, beam forming, RU and PPE
2574				 * threshold information are not supported
2575				 */
2576			},
2577			.he_mcs_nss_supp = {
2578				.rx_mcs_80 = cpu_to_le16(0xfffa),
2579				.tx_mcs_80 = cpu_to_le16(0xfffa),
2580				.rx_mcs_160 = cpu_to_le16(0xffff),
2581				.tx_mcs_160 = cpu_to_le16(0xffff),
2582				.rx_mcs_80p80 = cpu_to_le16(0xffff),
2583				.tx_mcs_80p80 = cpu_to_le16(0xffff),
2584			},
2585		},
2586	},
2587#endif
2588};
2589
2590static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2591	{
2592		/* TODO: should we support other types, e.g., P2P?*/
2593		.types_mask = BIT(NL80211_IFTYPE_STATION) |
2594			      BIT(NL80211_IFTYPE_AP),
2595		.he_cap = {
2596			.has_he = true,
2597			.he_cap_elem = {
2598				.mac_cap_info[0] =
2599					IEEE80211_HE_MAC_CAP0_HTC_HE,
2600				.mac_cap_info[1] =
2601					IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2602					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2603				.mac_cap_info[2] =
2604					IEEE80211_HE_MAC_CAP2_BSR |
2605					IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2606					IEEE80211_HE_MAC_CAP2_ACK_EN,
2607				.mac_cap_info[3] =
2608					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2609					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2610				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2611				.phy_cap_info[0] =
2612					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2613					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2614					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2615				.phy_cap_info[1] =
2616					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2617					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2618					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2619					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2620				.phy_cap_info[2] =
2621					IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2622					IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2623					IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2624					IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2625					IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2626
2627				/* Leave all the other PHY capability bytes
2628				 * unset, as DCM, beam forming, RU and PPE
2629				 * threshold information are not supported
2630				 */
2631			},
2632			.he_mcs_nss_supp = {
2633				.rx_mcs_80 = cpu_to_le16(0xfffa),
2634				.tx_mcs_80 = cpu_to_le16(0xfffa),
2635				.rx_mcs_160 = cpu_to_le16(0xfffa),
2636				.tx_mcs_160 = cpu_to_le16(0xfffa),
2637				.rx_mcs_80p80 = cpu_to_le16(0xfffa),
2638				.tx_mcs_80p80 = cpu_to_le16(0xfffa),
2639			},
2640		},
2641	},
2642#ifdef CONFIG_MAC80211_MESH
2643	{
2644		/* TODO: should we support other types, e.g., IBSS?*/
2645		.types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2646		.he_cap = {
2647			.has_he = true,
2648			.he_cap_elem = {
2649				.mac_cap_info[0] =
2650					IEEE80211_HE_MAC_CAP0_HTC_HE,
2651				.mac_cap_info[1] =
2652					IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2653				.mac_cap_info[2] =
2654					IEEE80211_HE_MAC_CAP2_ACK_EN,
2655				.mac_cap_info[3] =
2656					IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2657					IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2658				.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2659				.phy_cap_info[0] =
2660					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2661					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2662					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2663				.phy_cap_info[1] =
2664					IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2665					IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2666					IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2667					IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2668				.phy_cap_info[2] = 0,
2669
2670				/* Leave all the other PHY capability bytes
2671				 * unset, as DCM, beam forming, RU and PPE
2672				 * threshold information are not supported
2673				 */
2674			},
2675			.he_mcs_nss_supp = {
2676				.rx_mcs_80 = cpu_to_le16(0xfffa),
2677				.tx_mcs_80 = cpu_to_le16(0xfffa),
2678				.rx_mcs_160 = cpu_to_le16(0xfffa),
2679				.tx_mcs_160 = cpu_to_le16(0xfffa),
2680				.rx_mcs_80p80 = cpu_to_le16(0xfffa),
2681				.tx_mcs_80p80 = cpu_to_le16(0xfffa),
2682			},
2683		},
2684	},
2685#endif
2686};
2687
2688static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2689{
2690	u16 n_iftype_data;
2691
2692	if (sband->band == NL80211_BAND_2GHZ) {
2693		n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2694		sband->iftype_data =
2695			(struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2696	} else if (sband->band == NL80211_BAND_5GHZ) {
2697		n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
2698		sband->iftype_data =
2699			(struct ieee80211_sband_iftype_data *)he_capa_5ghz;
2700	} else {
2701		return;
2702	}
2703
2704	sband->n_iftype_data = n_iftype_data;
2705}
2706
2707#ifdef CONFIG_MAC80211_MESH
2708#define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2709#else
2710#define HWSIM_MESH_BIT 0
2711#endif
2712
2713#define HWSIM_DEFAULT_IF_LIMIT \
2714	(BIT(NL80211_IFTYPE_STATION) | \
2715	 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2716	 BIT(NL80211_IFTYPE_AP) | \
2717	 BIT(NL80211_IFTYPE_P2P_GO) | \
2718	 HWSIM_MESH_BIT)
2719
2720#define HWSIM_IFTYPE_SUPPORT_MASK \
2721	(BIT(NL80211_IFTYPE_STATION) | \
2722	 BIT(NL80211_IFTYPE_AP) | \
2723	 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2724	 BIT(NL80211_IFTYPE_P2P_GO) | \
2725	 BIT(NL80211_IFTYPE_ADHOC) | \
2726	 BIT(NL80211_IFTYPE_MESH_POINT))
2727
2728static int mac80211_hwsim_new_radio(struct genl_info *info,
2729				    struct hwsim_new_radio_params *param)
2730{
2731	int err;
2732	u8 addr[ETH_ALEN];
2733	struct mac80211_hwsim_data *data;
2734	struct ieee80211_hw *hw;
2735	enum nl80211_band band;
2736	const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2737	struct net *net;
2738	int idx, i;
2739	int n_limits = 0;
2740
2741	if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2742		return -EINVAL;
2743
2744	spin_lock_bh(&hwsim_radio_lock);
2745	idx = hwsim_radio_idx++;
2746	spin_unlock_bh(&hwsim_radio_lock);
2747
2748	if (param->use_chanctx)
2749		ops = &mac80211_hwsim_mchan_ops;
2750	hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2751	if (!hw) {
2752		pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2753		err = -ENOMEM;
2754		goto failed;
2755	}
2756
2757	/* ieee80211_alloc_hw_nm may have used a default name */
2758	param->hwname = wiphy_name(hw->wiphy);
2759
2760	if (info)
2761		net = genl_info_net(info);
2762	else
2763		net = &init_net;
2764	wiphy_net_set(hw->wiphy, net);
2765
2766	data = hw->priv;
2767	data->hw = hw;
2768
2769	data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2770	if (IS_ERR(data->dev)) {
2771		printk(KERN_DEBUG
2772		       "mac80211_hwsim: device_create failed (%ld)\n",
2773		       PTR_ERR(data->dev));
2774		err = -ENOMEM;
2775		goto failed_drvdata;
2776	}
2777	data->dev->driver = &mac80211_hwsim_driver.driver;
2778	err = device_bind_driver(data->dev);
2779	if (err != 0) {
2780		pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2781		       err);
2782		goto failed_bind;
2783	}
2784
2785	skb_queue_head_init(&data->pending);
2786
2787	SET_IEEE80211_DEV(hw, data->dev);
2788	if (!param->perm_addr) {
2789		eth_zero_addr(addr);
2790		addr[0] = 0x02;
2791		addr[3] = idx >> 8;
2792		addr[4] = idx;
2793		memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2794		/* Why need here second address ? */
2795		memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2796		data->addresses[1].addr[0] |= 0x40;
2797		hw->wiphy->n_addresses = 2;
2798		hw->wiphy->addresses = data->addresses;
2799		/* possible address clash is checked at hash table insertion */
2800	} else {
2801		memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
2802		/* compatibility with automatically generated mac addr */
2803		memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
2804		hw->wiphy->n_addresses = 2;
2805		hw->wiphy->addresses = data->addresses;
2806	}
2807
2808	data->channels = param->channels;
2809	data->use_chanctx = param->use_chanctx;
2810	data->idx = idx;
2811	data->destroy_on_close = param->destroy_on_close;
2812	if (info)
2813		data->portid = info->snd_portid;
2814
2815	/* setup interface limits, only on interface types we support */
2816	if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
2817		data->if_limits[n_limits].max = 1;
2818		data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
2819		n_limits++;
2820	}
2821
2822	if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
2823		data->if_limits[n_limits].max = 2048;
2824		/*
2825		 * For this case, we may only support a subset of
2826		 * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
2827		 * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
2828		 */
2829		data->if_limits[n_limits].types =
2830					HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
2831		n_limits++;
2832	}
2833
2834	if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
2835		data->if_limits[n_limits].max = 1;
2836		data->if_limits[n_limits].types =
2837						BIT(NL80211_IFTYPE_P2P_DEVICE);
2838		n_limits++;
2839	}
2840
2841	if (data->use_chanctx) {
2842		hw->wiphy->max_scan_ssids = 255;
2843		hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2844		hw->wiphy->max_remain_on_channel_duration = 1000;
2845		data->if_combination.radar_detect_widths = 0;
2846		data->if_combination.num_different_channels = data->channels;
2847	} else {
2848		data->if_combination.num_different_channels = 1;
2849		data->if_combination.radar_detect_widths =
2850					BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2851					BIT(NL80211_CHAN_WIDTH_20) |
2852					BIT(NL80211_CHAN_WIDTH_40) |
2853					BIT(NL80211_CHAN_WIDTH_80) |
2854					BIT(NL80211_CHAN_WIDTH_160);
2855	}
2856
2857	if (!n_limits) {
2858		err = -EINVAL;
2859		goto failed_hw;
2860	}
2861
2862	data->if_combination.max_interfaces = 0;
2863	for (i = 0; i < n_limits; i++)
2864		data->if_combination.max_interfaces +=
2865			data->if_limits[i].max;
2866
2867	data->if_combination.n_limits = n_limits;
2868	data->if_combination.limits = data->if_limits;
2869
2870	/*
2871	 * If we actually were asked to support combinations,
2872	 * advertise them - if there's only a single thing like
2873	 * only IBSS then don't advertise it as combinations.
2874	 */
2875	if (data->if_combination.max_interfaces > 1) {
2876		hw->wiphy->iface_combinations = &data->if_combination;
2877		hw->wiphy->n_iface_combinations = 1;
2878	}
2879
2880	if (param->ciphers) {
2881		memcpy(data->ciphers, param->ciphers,
2882		       param->n_ciphers * sizeof(u32));
2883		hw->wiphy->cipher_suites = data->ciphers;
2884		hw->wiphy->n_cipher_suites = param->n_ciphers;
2885	}
2886
2887	INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2888	INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2889	INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2890
2891	hw->queues = 5;
2892	hw->offchannel_tx_hw_queue = 4;
2893
2894	ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2895	ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2896	ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2897	ieee80211_hw_set(hw, QUEUE_CONTROL);
2898	ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2899	ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2900	ieee80211_hw_set(hw, MFP_CAPABLE);
2901	ieee80211_hw_set(hw, SIGNAL_DBM);
2902	ieee80211_hw_set(hw, SUPPORTS_PS);
2903	ieee80211_hw_set(hw, TDLS_WIDER_BW);
2904	if (rctbl)
2905		ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2906	ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
2907
2908	hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2909			    WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2910			    WIPHY_FLAG_AP_UAPSD |
2911			    WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2912	hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2913			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2914			       NL80211_FEATURE_STATIC_SMPS |
2915			       NL80211_FEATURE_DYNAMIC_SMPS |
2916			       NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2917	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2918
2919	hw->wiphy->interface_modes = param->iftypes;
2920
2921	/* ask mac80211 to reserve space for magic */
2922	hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2923	hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2924	hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2925
2926	memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2927		sizeof(hwsim_channels_2ghz));
2928	memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2929		sizeof(hwsim_channels_5ghz));
2930	memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2931
2932	for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2933		struct ieee80211_supported_band *sband = &data->bands[band];
2934
2935		sband->band = band;
2936
2937		switch (band) {
2938		case NL80211_BAND_2GHZ:
2939			sband->channels = data->channels_2ghz;
2940			sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2941			sband->bitrates = data->rates;
2942			sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2943			break;
2944		case NL80211_BAND_5GHZ:
2945			sband->channels = data->channels_5ghz;
2946			sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2947			sband->bitrates = data->rates + 4;
2948			sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2949
2950			sband->vht_cap.vht_supported = true;
2951			sband->vht_cap.cap =
2952				IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2953				IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2954				IEEE80211_VHT_CAP_RXLDPC |
2955				IEEE80211_VHT_CAP_SHORT_GI_80 |
2956				IEEE80211_VHT_CAP_SHORT_GI_160 |
2957				IEEE80211_VHT_CAP_TXSTBC |
2958				IEEE80211_VHT_CAP_RXSTBC_4 |
2959				IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2960			sband->vht_cap.vht_mcs.rx_mcs_map =
2961				cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2962					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2963					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2964					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2965					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2966					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2967					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2968					    IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2969			sband->vht_cap.vht_mcs.tx_mcs_map =
2970				sband->vht_cap.vht_mcs.rx_mcs_map;
2971			break;
2972		default:
2973			continue;
2974		}
2975
2976		sband->ht_cap.ht_supported = true;
2977		sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2978				    IEEE80211_HT_CAP_GRN_FLD |
2979				    IEEE80211_HT_CAP_SGI_20 |
2980				    IEEE80211_HT_CAP_SGI_40 |
2981				    IEEE80211_HT_CAP_DSSSCCK40;
2982		sband->ht_cap.ampdu_factor = 0x3;
2983		sband->ht_cap.ampdu_density = 0x6;
2984		memset(&sband->ht_cap.mcs, 0,
2985		       sizeof(sband->ht_cap.mcs));
2986		sband->ht_cap.mcs.rx_mask[0] = 0xff;
2987		sband->ht_cap.mcs.rx_mask[1] = 0xff;
2988		sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2989
2990		mac80211_hwsim_he_capab(sband);
2991
2992		hw->wiphy->bands[band] = sband;
2993	}
2994
2995	/* By default all radios belong to the first group */
2996	data->group = 1;
2997	mutex_init(&data->mutex);
2998
2999	data->netgroup = hwsim_net_get_netgroup(net);
3000	data->wmediumd = hwsim_net_get_wmediumd(net);
3001
3002	/* Enable frame retransmissions for lossy channels */
3003	hw->max_rates = 4;
3004	hw->max_rate_tries = 11;
3005
3006	hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3007	hw->wiphy->n_vendor_commands =
3008		ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3009	hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3010	hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3011
3012	if (param->reg_strict)
3013		hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3014	if (param->regd) {
3015		data->regd = param->regd;
3016		hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3017		wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3018		/* give the regulatory workqueue a chance to run */
3019		schedule_timeout_interruptible(1);
3020	}
3021
3022	if (param->no_vif)
3023		ieee80211_hw_set(hw, NO_AUTO_VIF);
3024
3025	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3026
3027	hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3028		     HRTIMER_MODE_ABS_SOFT);
3029	data->beacon_timer.function = mac80211_hwsim_beacon;
3030
3031	err = ieee80211_register_hw(hw);
3032	if (err < 0) {
3033		pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3034		       err);
3035		goto failed_hw;
3036	}
3037
3038	wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3039
3040	if (param->reg_alpha2) {
3041		data->alpha2[0] = param->reg_alpha2[0];
3042		data->alpha2[1] = param->reg_alpha2[1];
3043		regulatory_hint(hw->wiphy, param->reg_alpha2);
3044	}
3045
3046	data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3047	debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3048	debugfs_create_file("group", 0666, data->debugfs, data,
3049			    &hwsim_fops_group);
3050	if (!data->use_chanctx)
3051		debugfs_create_file("dfs_simulate_radar", 0222,
3052				    data->debugfs,
3053				    data, &hwsim_simulate_radar);
3054
3055	spin_lock_bh(&hwsim_radio_lock);
3056	err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3057				     hwsim_rht_params);
3058	if (err < 0) {
3059		if (info) {
3060			GENL_SET_ERR_MSG(info, "perm addr already present");
3061			NL_SET_BAD_ATTR(info->extack,
3062					info->attrs[HWSIM_ATTR_PERM_ADDR]);
3063		}
3064		spin_unlock_bh(&hwsim_radio_lock);
3065		goto failed_final_insert;
3066	}
3067
3068	list_add_tail(&data->list, &hwsim_radios);
3069	hwsim_radios_generation++;
3070	spin_unlock_bh(&hwsim_radio_lock);
3071
3072	hwsim_mcast_new_radio(idx, info, param);
3073
3074	return idx;
3075
3076failed_final_insert:
3077	debugfs_remove_recursive(data->debugfs);
3078	ieee80211_unregister_hw(data->hw);
3079failed_hw:
3080	device_release_driver(data->dev);
3081failed_bind:
3082	device_unregister(data->dev);
3083failed_drvdata:
3084	ieee80211_free_hw(hw);
3085failed:
3086	return err;
3087}
3088
3089static void hwsim_mcast_del_radio(int id, const char *hwname,
3090				  struct genl_info *info)
3091{
3092	struct sk_buff *skb;
3093	void *data;
3094	int ret;
3095
3096	skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3097	if (!skb)
3098		return;
3099
3100	data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3101			   HWSIM_CMD_DEL_RADIO);
3102	if (!data)
3103		goto error;
3104
3105	ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3106	if (ret < 0)
3107		goto error;
3108
3109	ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3110		      hwname);
3111	if (ret < 0)
3112		goto error;
3113
3114	genlmsg_end(skb, data);
3115
3116	hwsim_mcast_config_msg(skb, info);
3117
3118	return;
3119
3120error:
3121	nlmsg_free(skb);
3122}
3123
3124static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3125				     const char *hwname,
3126				     struct genl_info *info)
3127{
3128	hwsim_mcast_del_radio(data->idx, hwname, info);
3129	debugfs_remove_recursive(data->debugfs);
3130	ieee80211_unregister_hw(data->hw);
3131	device_release_driver(data->dev);
3132	device_unregister(data->dev);
3133	ieee80211_free_hw(data->hw);
3134}
3135
3136static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3137				    struct mac80211_hwsim_data *data,
3138				    u32 portid, u32 seq,
3139				    struct netlink_callback *cb, int flags)
3140{
3141	void *hdr;
3142	struct hwsim_new_radio_params param = { };
3143	int res = -EMSGSIZE;
3144
3145	hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3146			  HWSIM_CMD_GET_RADIO);
3147	if (!hdr)
3148		return -EMSGSIZE;
3149
3150	if (cb)
3151		genl_dump_check_consistent(cb, hdr);
3152
3153	if (data->alpha2[0] && data->alpha2[1])
3154		param.reg_alpha2 = data->alpha2;
3155
3156	param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3157					REGULATORY_STRICT_REG);
3158	param.p2p_device = !!(data->hw->wiphy->interface_modes &
3159					BIT(NL80211_IFTYPE_P2P_DEVICE));
3160	param.use_chanctx = data->use_chanctx;
3161	param.regd = data->regd;
3162	param.channels = data->channels;
3163	param.hwname = wiphy_name(data->hw->wiphy);
3164
3165	res = append_radio_msg(skb, data->idx, &param);
3166	if (res < 0)
3167		goto out_err;
3168
3169	genlmsg_end(skb, hdr);
3170	return 0;
3171
3172out_err:
3173	genlmsg_cancel(skb, hdr);
3174	return res;
3175}
3176
3177static void mac80211_hwsim_free(void)
3178{
3179	struct mac80211_hwsim_data *data;
3180
3181	spin_lock_bh(&hwsim_radio_lock);
3182	while ((data = list_first_entry_or_null(&hwsim_radios,
3183						struct mac80211_hwsim_data,
3184						list))) {
3185		list_del(&data->list);
3186		spin_unlock_bh(&hwsim_radio_lock);
3187		mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3188					 NULL);
3189		spin_lock_bh(&hwsim_radio_lock);
3190	}
3191	spin_unlock_bh(&hwsim_radio_lock);
3192	class_destroy(hwsim_class);
3193}
3194
3195static const struct net_device_ops hwsim_netdev_ops = {
3196	.ndo_start_xmit 	= hwsim_mon_xmit,
3197	.ndo_set_mac_address 	= eth_mac_addr,
3198	.ndo_validate_addr	= eth_validate_addr,
3199};
3200
3201static void hwsim_mon_setup(struct net_device *dev)
3202{
3203	dev->netdev_ops = &hwsim_netdev_ops;
3204	dev->needs_free_netdev = true;
3205	ether_setup(dev);
3206	dev->priv_flags |= IFF_NO_QUEUE;
3207	dev->type = ARPHRD_IEEE80211_RADIOTAP;
3208	eth_zero_addr(dev->dev_addr);
3209	dev->dev_addr[0] = 0x12;
3210}
3211
3212static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3213{
3214	return rhashtable_lookup_fast(&hwsim_radios_rht,
3215				      addr,
3216				      hwsim_rht_params);
3217}
3218
3219static void hwsim_register_wmediumd(struct net *net, u32 portid)
3220{
3221	struct mac80211_hwsim_data *data;
3222
3223	hwsim_net_set_wmediumd(net, portid);
3224
3225	spin_lock_bh(&hwsim_radio_lock);
3226	list_for_each_entry(data, &hwsim_radios, list) {
3227		if (data->netgroup == hwsim_net_get_netgroup(net))
3228			data->wmediumd = portid;
3229	}
3230	spin_unlock_bh(&hwsim_radio_lock);
3231}
3232
3233static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3234					   struct genl_info *info)
3235{
3236
3237	struct ieee80211_hdr *hdr;
3238	struct mac80211_hwsim_data *data2;
3239	struct ieee80211_tx_info *txi;
3240	struct hwsim_tx_rate *tx_attempts;
3241	u64 ret_skb_cookie;
3242	struct sk_buff *skb, *tmp;
3243	const u8 *src;
3244	unsigned int hwsim_flags;
3245	int i;
3246	bool found = false;
3247
3248	if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3249	    !info->attrs[HWSIM_ATTR_FLAGS] ||
3250	    !info->attrs[HWSIM_ATTR_COOKIE] ||
3251	    !info->attrs[HWSIM_ATTR_SIGNAL] ||
3252	    !info->attrs[HWSIM_ATTR_TX_INFO])
3253		goto out;
3254
3255	src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3256	hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3257	ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3258
3259	data2 = get_hwsim_data_ref_from_addr(src);
3260	if (!data2)
3261		goto out;
3262
3263	if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3264		goto out;
3265
3266	if (info->snd_portid != data2->wmediumd)
3267		goto out;
3268
3269	/* look for the skb matching the cookie passed back from user */
3270	skb_queue_walk_safe(&data2->pending, skb, tmp) {
3271		u64 skb_cookie;
3272
3273		txi = IEEE80211_SKB_CB(skb);
3274		skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3275
3276		if (skb_cookie == ret_skb_cookie) {
3277			skb_unlink(skb, &data2->pending);
3278			found = true;
3279			break;
3280		}
3281	}
3282
3283	/* not found */
3284	if (!found)
3285		goto out;
3286
3287	/* Tx info received because the frame was broadcasted on user space,
3288	 so we get all the necessary info: tx attempts and skb control buff */
3289
3290	tx_attempts = (struct hwsim_tx_rate *)nla_data(
3291		       info->attrs[HWSIM_ATTR_TX_INFO]);
3292
3293	/* now send back TX status */
3294	txi = IEEE80211_SKB_CB(skb);
3295
3296	ieee80211_tx_info_clear_status(txi);
3297
3298	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3299		txi->status.rates[i].idx = tx_attempts[i].idx;
3300		txi->status.rates[i].count = tx_attempts[i].count;
3301	}
3302
3303	txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3304
3305	if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3306	   (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3307		if (skb->len >= 16) {
3308			hdr = (struct ieee80211_hdr *) skb->data;
3309			mac80211_hwsim_monitor_ack(data2->channel,
3310						   hdr->addr2);
3311		}
3312		txi->flags |= IEEE80211_TX_STAT_ACK;
3313	}
3314	ieee80211_tx_status_irqsafe(data2->hw, skb);
3315	return 0;
3316out:
3317	return -EINVAL;
3318
3319}
3320
3321static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3322					  struct genl_info *info)
3323{
3324	struct mac80211_hwsim_data *data2;
3325	struct ieee80211_rx_status rx_status;
3326	struct ieee80211_hdr *hdr;
3327	const u8 *dst;
3328	int frame_data_len;
3329	void *frame_data;
3330	struct sk_buff *skb = NULL;
3331
3332	if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3333	    !info->attrs[HWSIM_ATTR_FRAME] ||
3334	    !info->attrs[HWSIM_ATTR_RX_RATE] ||
3335	    !info->attrs[HWSIM_ATTR_SIGNAL])
3336		goto out;
3337
3338	dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3339	frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3340	frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3341
3342	/* Allocate new skb here */
3343	skb = alloc_skb(frame_data_len, GFP_KERNEL);
3344	if (skb == NULL)
3345		goto err;
3346
3347	if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3348		goto err;
3349
3350	/* Copy the data */
3351	skb_put_data(skb, frame_data, frame_data_len);
3352
3353	data2 = get_hwsim_data_ref_from_addr(dst);
3354	if (!data2)
3355		goto out;
3356
3357	if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3358		goto out;
3359
3360	if (info->snd_portid != data2->wmediumd)
3361		goto out;
3362
3363	/* check if radio is configured properly */
3364
3365	if (data2->idle || !data2->started)
3366		goto out;
3367
3368	/* A frame is received from user space */
3369	memset(&rx_status, 0, sizeof(rx_status));
3370	if (info->attrs[HWSIM_ATTR_FREQ]) {
3371		/* throw away off-channel packets, but allow both the temporary
3372		 * ("hw" scan/remain-on-channel) and regular channel, since the
3373		 * internal datapath also allows this
3374		 */
3375		mutex_lock(&data2->mutex);
3376		rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3377
3378		if (rx_status.freq != data2->channel->center_freq &&
3379		    (!data2->tmp_chan ||
3380		     rx_status.freq != data2->tmp_chan->center_freq)) {
3381			mutex_unlock(&data2->mutex);
3382			goto out;
3383		}
3384		mutex_unlock(&data2->mutex);
3385	} else {
3386		rx_status.freq = data2->channel->center_freq;
3387	}
3388
3389	rx_status.band = data2->channel->band;
3390	rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3391	rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3392
3393	hdr = (void *)skb->data;
3394
3395	if (ieee80211_is_beacon(hdr->frame_control) ||
3396	    ieee80211_is_probe_resp(hdr->frame_control))
3397		rx_status.boottime_ns = ktime_get_boottime_ns();
3398
3399	memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3400	data2->rx_pkts++;
3401	data2->rx_bytes += skb->len;
3402	ieee80211_rx_irqsafe(data2->hw, skb);
3403
3404	return 0;
3405err:
3406	pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3407out:
3408	dev_kfree_skb(skb);
3409	return -EINVAL;
3410}
3411
3412static int hwsim_register_received_nl(struct sk_buff *skb_2,
3413				      struct genl_info *info)
3414{
3415	struct net *net = genl_info_net(info);
3416	struct mac80211_hwsim_data *data;
3417	int chans = 1;
3418
3419	spin_lock_bh(&hwsim_radio_lock);
3420	list_for_each_entry(data, &hwsim_radios, list)
3421		chans = max(chans, data->channels);
3422	spin_unlock_bh(&hwsim_radio_lock);
3423
3424	/* In the future we should revise the userspace API and allow it
3425	 * to set a flag that it does support multi-channel, then we can
3426	 * let this pass conditionally on the flag.
3427	 * For current userspace, prohibit it since it won't work right.
3428	 */
3429	if (chans > 1)
3430		return -EOPNOTSUPP;
3431
3432	if (hwsim_net_get_wmediumd(net))
3433		return -EBUSY;
3434
3435	hwsim_register_wmediumd(net, info->snd_portid);
3436
3437	pr_debug("mac80211_hwsim: received a REGISTER, "
3438	       "switching to wmediumd mode with pid %d\n", info->snd_portid);
3439
3440	return 0;
3441}
3442
3443/* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3444static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3445{
3446	int i;
3447
3448	for (i = 0; i < n_ciphers; i++) {
3449		int j;
3450		int found = 0;
3451
3452		for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3453			if (ciphers[i] == hwsim_ciphers[j]) {
3454				found = 1;
3455				break;
3456			}
3457		}
3458
3459		if (!found)
3460			return false;
3461	}
3462
3463	return true;
3464}
3465
3466static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3467{
3468	struct hwsim_new_radio_params param = { 0 };
3469	const char *hwname = NULL;
3470	int ret;
3471
3472	param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3473	param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3474	param.channels = channels;
3475	param.destroy_on_close =
3476		info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3477
3478	if (info->attrs[HWSIM_ATTR_CHANNELS])
3479		param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3480
3481	if (param.channels < 1) {
3482		GENL_SET_ERR_MSG(info, "must have at least one channel");
3483		return -EINVAL;
3484	}
3485
3486	if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3487		GENL_SET_ERR_MSG(info, "too many channels specified");
3488		return -EINVAL;
3489	}
3490
3491	if (info->attrs[HWSIM_ATTR_NO_VIF])
3492		param.no_vif = true;
3493
3494	if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3495		param.use_chanctx = true;
3496	else
3497		param.use_chanctx = (param.channels > 1);
3498
3499	if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3500		param.reg_alpha2 =
3501			nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3502
3503	if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3504		u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3505
3506		if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3507			return -EINVAL;
3508
3509		idx = array_index_nospec(idx,
3510					 ARRAY_SIZE(hwsim_world_regdom_custom));
3511		param.regd = hwsim_world_regdom_custom[idx];
3512	}
3513
3514	if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3515		if (!is_valid_ether_addr(
3516				nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3517			GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3518			NL_SET_BAD_ATTR(info->extack,
3519					info->attrs[HWSIM_ATTR_PERM_ADDR]);
3520			return -EINVAL;
3521		}
3522
3523		param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3524	}
3525
3526	if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3527		param.iftypes =
3528			nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3529
3530		if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3531			NL_SET_ERR_MSG_ATTR(info->extack,
3532					    info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3533					    "cannot support more iftypes than kernel");
3534			return -EINVAL;
3535		}
3536	} else {
3537		param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3538	}
3539
3540	/* ensure both flag and iftype support is honored */
3541	if (param.p2p_device ||
3542	    param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3543		param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3544		param.p2p_device = true;
3545	}
3546
3547	if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3548		u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3549
3550		param.ciphers =
3551			nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3552
3553		if (len % sizeof(u32)) {
3554			NL_SET_ERR_MSG_ATTR(info->extack,
3555					    info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3556					    "bad cipher list length");
3557			return -EINVAL;
3558		}
3559
3560		param.n_ciphers = len / sizeof(u32);
3561
3562		if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3563			NL_SET_ERR_MSG_ATTR(info->extack,
3564					    info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3565					    "too many ciphers specified");
3566			return -EINVAL;
3567		}
3568
3569		if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3570			NL_SET_ERR_MSG_ATTR(info->extack,
3571					    info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3572					    "unsupported ciphers specified");
3573			return -EINVAL;
3574		}
3575	}
3576
3577	if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3578		hwname = kasprintf(GFP_KERNEL, "%.*s",
3579				   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3580				   (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3581		if (!hwname)
3582			return -ENOMEM;
3583		param.hwname = hwname;
3584	}
3585
3586	ret = mac80211_hwsim_new_radio(info, &param);
3587	kfree(hwname);
3588	return ret;
3589}
3590
3591static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3592{
3593	struct mac80211_hwsim_data *data;
3594	s64 idx = -1;
3595	const char *hwname = NULL;
3596
3597	if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3598		idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3599	} else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3600		hwname = kasprintf(GFP_KERNEL, "%.*s",
3601				   nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3602				   (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3603		if (!hwname)
3604			return -ENOMEM;
3605	} else
3606		return -EINVAL;
3607
3608	spin_lock_bh(&hwsim_radio_lock);
3609	list_for_each_entry(data, &hwsim_radios, list) {
3610		if (idx >= 0) {
3611			if (data->idx != idx)
3612				continue;
3613		} else {
3614			if (!hwname ||
3615			    strcmp(hwname, wiphy_name(data->hw->wiphy)))
3616				continue;
3617		}
3618
3619		if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3620			continue;
3621
3622		list_del(&data->list);
3623		rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3624				       hwsim_rht_params);
3625		hwsim_radios_generation++;
3626		spin_unlock_bh(&hwsim_radio_lock);
3627		mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3628					 info);
3629		kfree(hwname);
3630		return 0;
3631	}
3632	spin_unlock_bh(&hwsim_radio_lock);
3633
3634	kfree(hwname);
3635	return -ENODEV;
3636}
3637
3638static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3639{
3640	struct mac80211_hwsim_data *data;
3641	struct sk_buff *skb;
3642	int idx, res = -ENODEV;
3643
3644	if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3645		return -EINVAL;
3646	idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3647
3648	spin_lock_bh(&hwsim_radio_lock);
3649	list_for_each_entry(data, &hwsim_radios, list) {
3650		if (data->idx != idx)
3651			continue;
3652
3653		if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3654			continue;
3655
3656		skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3657		if (!skb) {
3658			res = -ENOMEM;
3659			goto out_err;
3660		}
3661
3662		res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3663					       info->snd_seq, NULL, 0);
3664		if (res < 0) {
3665			nlmsg_free(skb);
3666			goto out_err;
3667		}
3668
3669		res = genlmsg_reply(skb, info);
3670		break;
3671	}
3672
3673out_err:
3674	spin_unlock_bh(&hwsim_radio_lock);
3675
3676	return res;
3677}
3678
3679static int hwsim_dump_radio_nl(struct sk_buff *skb,
3680			       struct netlink_callback *cb)
3681{
3682	int last_idx = cb->args[0] - 1;
3683	struct mac80211_hwsim_data *data = NULL;
3684	int res = 0;
3685	void *hdr;
3686
3687	spin_lock_bh(&hwsim_radio_lock);
3688	cb->seq = hwsim_radios_generation;
3689
3690	if (last_idx >= hwsim_radio_idx-1)
3691		goto done;
3692
3693	list_for_each_entry(data, &hwsim_radios, list) {
3694		if (data->idx <= last_idx)
3695			continue;
3696
3697		if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3698			continue;
3699
3700		res = mac80211_hwsim_get_radio(skb, data,
3701					       NETLINK_CB(cb->skb).portid,
3702					       cb->nlh->nlmsg_seq, cb,
3703					       NLM_F_MULTI);
3704		if (res < 0)
3705			break;
3706
3707		last_idx = data->idx;
3708	}
3709
3710	cb->args[0] = last_idx + 1;
3711
3712	/* list changed, but no new element sent, set interrupted flag */
3713	if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3714		hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3715				  cb->nlh->nlmsg_seq, &hwsim_genl_family,
3716				  NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3717		if (hdr) {
3718			genl_dump_check_consistent(cb, hdr);
3719			genlmsg_end(skb, hdr);
3720		} else {
3721			res = -EMSGSIZE;
3722		}
3723	}
3724
3725done:
3726	spin_unlock_bh(&hwsim_radio_lock);
3727	return res ?: skb->len;
3728}
3729
3730/* Generic Netlink operations array */
3731static const struct genl_ops hwsim_ops[] = {
3732	{
3733		.cmd = HWSIM_CMD_REGISTER,
3734		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3735		.doit = hwsim_register_received_nl,
3736		.flags = GENL_UNS_ADMIN_PERM,
3737	},
3738	{
3739		.cmd = HWSIM_CMD_FRAME,
3740		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3741		.doit = hwsim_cloned_frame_received_nl,
3742	},
3743	{
3744		.cmd = HWSIM_CMD_TX_INFO_FRAME,
3745		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3746		.doit = hwsim_tx_info_frame_received_nl,
3747	},
3748	{
3749		.cmd = HWSIM_CMD_NEW_RADIO,
3750		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3751		.doit = hwsim_new_radio_nl,
3752		.flags = GENL_UNS_ADMIN_PERM,
3753	},
3754	{
3755		.cmd = HWSIM_CMD_DEL_RADIO,
3756		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3757		.doit = hwsim_del_radio_nl,
3758		.flags = GENL_UNS_ADMIN_PERM,
3759	},
3760	{
3761		.cmd = HWSIM_CMD_GET_RADIO,
3762		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3763		.doit = hwsim_get_radio_nl,
3764		.dumpit = hwsim_dump_radio_nl,
3765	},
3766};
3767
3768static struct genl_family hwsim_genl_family __ro_after_init = {
3769	.name = "MAC80211_HWSIM",
3770	.version = 1,
3771	.maxattr = HWSIM_ATTR_MAX,
3772	.policy = hwsim_genl_policy,
3773	.netnsok = true,
3774	.module = THIS_MODULE,
3775	.ops = hwsim_ops,
3776	.n_ops = ARRAY_SIZE(hwsim_ops),
3777	.mcgrps = hwsim_mcgrps,
3778	.n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3779};
3780
3781static void remove_user_radios(u32 portid)
3782{
3783	struct mac80211_hwsim_data *entry, *tmp;
3784	LIST_HEAD(list);
3785
3786	spin_lock_bh(&hwsim_radio_lock);
3787	list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3788		if (entry->destroy_on_close && entry->portid == portid) {
3789			list_move(&entry->list, &list);
3790			rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
3791					       hwsim_rht_params);
3792			hwsim_radios_generation++;
3793		}
3794	}
3795	spin_unlock_bh(&hwsim_radio_lock);
3796
3797	list_for_each_entry_safe(entry, tmp, &list, list) {
3798		list_del(&entry->list);
3799		mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
3800					 NULL);
3801	}
3802}
3803
3804static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3805					 unsigned long state,
3806					 void *_notify)
3807{
3808	struct netlink_notify *notify = _notify;
3809
3810	if (state != NETLINK_URELEASE)
3811		return NOTIFY_DONE;
3812
3813	remove_user_radios(notify->portid);
3814
3815	if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3816		printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3817		       " socket, switching to perfect channel medium\n");
3818		hwsim_register_wmediumd(notify->net, 0);
3819	}
3820	return NOTIFY_DONE;
3821
3822}
3823
3824static struct notifier_block hwsim_netlink_notifier = {
3825	.notifier_call = mac80211_hwsim_netlink_notify,
3826};
3827
3828static int __init hwsim_init_netlink(void)
3829{
3830	int rc;
3831
3832	printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3833
3834	rc = genl_register_family(&hwsim_genl_family);
3835	if (rc)
3836		goto failure;
3837
3838	rc = netlink_register_notifier(&hwsim_netlink_notifier);
3839	if (rc) {
3840		genl_unregister_family(&hwsim_genl_family);
3841		goto failure;
3842	}
3843
3844	return 0;
3845
3846failure:
3847	pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3848	return -EINVAL;
3849}
3850
3851static __net_init int hwsim_init_net(struct net *net)
3852{
3853	return hwsim_net_set_netgroup(net);
3854}
3855
3856static void __net_exit hwsim_exit_net(struct net *net)
3857{
3858	struct mac80211_hwsim_data *data, *tmp;
3859	LIST_HEAD(list);
3860
3861	spin_lock_bh(&hwsim_radio_lock);
3862	list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3863		if (!net_eq(wiphy_net(data->hw->wiphy), net))
3864			continue;
3865
3866		/* Radios created in init_net are returned to init_net. */
3867		if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3868			continue;
3869
3870		list_move(&data->list, &list);
3871		rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3872				       hwsim_rht_params);
3873		hwsim_radios_generation++;
3874	}
3875	spin_unlock_bh(&hwsim_radio_lock);
3876
3877	list_for_each_entry_safe(data, tmp, &list, list) {
3878		list_del(&data->list);
3879		mac80211_hwsim_del_radio(data,
3880					 wiphy_name(data->hw->wiphy),
3881					 NULL);
3882	}
3883
3884	ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
3885}
3886
3887static struct pernet_operations hwsim_net_ops = {
3888	.init = hwsim_init_net,
3889	.exit = hwsim_exit_net,
3890	.id   = &hwsim_net_id,
3891	.size = sizeof(struct hwsim_net),
3892};
3893
3894static void hwsim_exit_netlink(void)
3895{
3896	/* unregister the notifier */
3897	netlink_unregister_notifier(&hwsim_netlink_notifier);
3898	/* unregister the family */
3899	genl_unregister_family(&hwsim_genl_family);
3900}
3901
3902static int __init init_mac80211_hwsim(void)
3903{
3904	int i, err;
3905
3906	if (radios < 0 || radios > 100)
3907		return -EINVAL;
3908
3909	if (channels < 1)
3910		return -EINVAL;
3911
3912	spin_lock_init(&hwsim_radio_lock);
3913
3914	err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
3915	if (err)
3916		return err;
3917
3918	err = register_pernet_device(&hwsim_net_ops);
3919	if (err)
3920		goto out_free_rht;
3921
3922	err = platform_driver_register(&mac80211_hwsim_driver);
3923	if (err)
3924		goto out_unregister_pernet;
3925
3926	err = hwsim_init_netlink();
3927	if (err)
3928		goto out_unregister_driver;
3929
3930	hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3931	if (IS_ERR(hwsim_class)) {
3932		err = PTR_ERR(hwsim_class);
3933		goto out_exit_netlink;
3934	}
3935
3936	for (i = 0; i < radios; i++) {
3937		struct hwsim_new_radio_params param = { 0 };
3938
3939		param.channels = channels;
3940
3941		switch (regtest) {
3942		case HWSIM_REGTEST_DIFF_COUNTRY:
3943			if (i < ARRAY_SIZE(hwsim_alpha2s))
3944				param.reg_alpha2 = hwsim_alpha2s[i];
3945			break;
3946		case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3947			if (!i)
3948				param.reg_alpha2 = hwsim_alpha2s[0];
3949			break;
3950		case HWSIM_REGTEST_STRICT_ALL:
3951			param.reg_strict = true;
3952			/* fall through */
3953		case HWSIM_REGTEST_DRIVER_REG_ALL:
3954			param.reg_alpha2 = hwsim_alpha2s[0];
3955			break;
3956		case HWSIM_REGTEST_WORLD_ROAM:
3957			if (i == 0)
3958				param.regd = &hwsim_world_regdom_custom_01;
3959			break;
3960		case HWSIM_REGTEST_CUSTOM_WORLD:
3961			param.regd = &hwsim_world_regdom_custom_01;
3962			break;
3963		case HWSIM_REGTEST_CUSTOM_WORLD_2:
3964			if (i == 0)
3965				param.regd = &hwsim_world_regdom_custom_01;
3966			else if (i == 1)
3967				param.regd = &hwsim_world_regdom_custom_02;
3968			break;
3969		case HWSIM_REGTEST_STRICT_FOLLOW:
3970			if (i == 0) {
3971				param.reg_strict = true;
3972				param.reg_alpha2 = hwsim_alpha2s[0];
3973			}
3974			break;
3975		case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3976			if (i == 0) {
3977				param.reg_strict = true;
3978				param.reg_alpha2 = hwsim_alpha2s[0];
3979			} else if (i == 1) {
3980				param.reg_alpha2 = hwsim_alpha2s[1];
3981			}
3982			break;
3983		case HWSIM_REGTEST_ALL:
3984			switch (i) {
3985			case 0:
3986				param.regd = &hwsim_world_regdom_custom_01;
3987				break;
3988			case 1:
3989				param.regd = &hwsim_world_regdom_custom_02;
3990				break;
3991			case 2:
3992				param.reg_alpha2 = hwsim_alpha2s[0];
3993				break;
3994			case 3:
3995				param.reg_alpha2 = hwsim_alpha2s[1];
3996				break;
3997			case 4:
3998				param.reg_strict = true;
3999				param.reg_alpha2 = hwsim_alpha2s[2];
4000				break;
4001			}
4002			break;
4003		default:
4004			break;
4005		}
4006
4007		param.p2p_device = support_p2p_device;
4008		param.use_chanctx = channels > 1;
4009		param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4010		if (param.p2p_device)
4011			param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4012
4013		err = mac80211_hwsim_new_radio(NULL, &param);
4014		if (err < 0)
4015			goto out_free_radios;
4016	}
4017
4018	hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4019				 hwsim_mon_setup);
4020	if (hwsim_mon == NULL) {
4021		err = -ENOMEM;
4022		goto out_free_radios;
4023	}
4024
4025	rtnl_lock();
4026	err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4027	if (err < 0) {
4028		rtnl_unlock();
4029		goto out_free_mon;
4030	}
4031
4032	err = register_netdevice(hwsim_mon);
4033	if (err < 0) {
4034		rtnl_unlock();
4035		goto out_free_mon;
4036	}
4037	rtnl_unlock();
4038
4039	return 0;
4040
4041out_free_mon:
4042	free_netdev(hwsim_mon);
4043out_free_radios:
4044	mac80211_hwsim_free();
4045out_exit_netlink:
4046	hwsim_exit_netlink();
4047out_unregister_driver:
4048	platform_driver_unregister(&mac80211_hwsim_driver);
4049out_unregister_pernet:
4050	unregister_pernet_device(&hwsim_net_ops);
4051out_free_rht:
4052	rhashtable_destroy(&hwsim_radios_rht);
4053	return err;
4054}
4055module_init(init_mac80211_hwsim);
4056
4057static void __exit exit_mac80211_hwsim(void)
4058{
4059	pr_debug("mac80211_hwsim: unregister radios\n");
4060
4061	hwsim_exit_netlink();
4062
4063	mac80211_hwsim_free();
4064
4065	rhashtable_destroy(&hwsim_radios_rht);
4066	unregister_netdev(hwsim_mon);
4067	platform_driver_unregister(&mac80211_hwsim_driver);
4068	unregister_pernet_device(&hwsim_net_ops);
4069}
4070module_exit(exit_mac80211_hwsim);