1/*
   2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 as
   8 * published by the Free Software Foundation.
   9 */
  10
  11/*
  12 * TODO:
  13 * - Add TSF sync and fix IBSS beacon transmission by adding
  14 *   competition for "air time" at TBTT
  15 * - RX filtering based on filter configuration (data->rx_filter)
  16 */
  17
  18#include <linux/list.h>
  19#include <linux/slab.h>
  20#include <linux/spinlock.h>
  21#include <net/dst.h>
  22#include <net/xfrm.h>
  23#include <net/mac80211.h>
  24#include <net/ieee80211_radiotap.h>
  25#include <linux/if_arp.h>
  26#include <linux/rtnetlink.h>
  27#include <linux/etherdevice.h>
  28#include <linux/debugfs.h>
 
 
  29#include <net/genetlink.h>
  30#include "mac80211_hwsim.h"
  31
  32#define WARN_QUEUE 100
  33#define MAX_QUEUE 200
  34
  35MODULE_AUTHOR("Jouni Malinen");
  36MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  37MODULE_LICENSE("GPL");
  38
  39int wmediumd_pid;
 
  40static int radios = 2;
  41module_param(radios, int, 0444);
  42MODULE_PARM_DESC(radios, "Number of simulated radios");
  43
  44static bool fake_hw_scan;
  45module_param(fake_hw_scan, bool, 0444);
  46MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
  47
  48/**
  49 * enum hwsim_regtest - the type of regulatory tests we offer
  50 *
  51 * These are the different values you can use for the regtest
  52 * module parameter. This is useful to help test world roaming
  53 * and the driver regulatory_hint() call and combinations of these.
  54 * If you want to do specific alpha2 regulatory domain tests simply
  55 * use the userspace regulatory request as that will be respected as
  56 * well without the need of this module parameter. This is designed
  57 * only for testing the driver regulatory request, world roaming
  58 * and all possible combinations.
  59 *
  60 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  61 * 	this is the default value.
  62 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  63 *	hint, only one driver regulatory hint will be sent as such the
  64 * 	secondary radios are expected to follow.
  65 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  66 * 	request with all radios reporting the same regulatory domain.
  67 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  68 * 	different regulatory domains requests. Expected behaviour is for
  69 * 	an intersection to occur but each device will still use their
  70 * 	respective regulatory requested domains. Subsequent radios will
  71 * 	use the resulting intersection.
  72 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  73 *	this by using a custom beacon-capable regulatory domain for the first
  74 *	radio. All other device world roam.
  75 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  76 * 	domain requests. All radios will adhere to this custom world regulatory
  77 * 	domain.
  78 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  79 * 	domain requests. The first radio will adhere to the first custom world
  80 * 	regulatory domain, the second one to the second custom world regulatory
  81 * 	domain. All other devices will world roam.
  82 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  83 *	settings, only the first radio will send a regulatory domain request
  84 *	and use strict settings. The rest of the radios are expected to follow.
  85 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
  86 *	settings. All radios will adhere to this.
  87 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
  88 *	domain settings, combined with secondary driver regulatory domain
  89 *	settings. The first radio will get a strict regulatory domain setting
  90 *	using the first driver regulatory request and the second radio will use
  91 *	non-strict settings using the second driver regulatory request. All
  92 *	other devices should follow the intersection created between the
  93 *	first two.
  94 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
  95 * 	at least 6 radios for a complete test. We will test in this order:
  96 * 	1 - driver custom world regulatory domain
  97 * 	2 - second custom world regulatory domain
  98 * 	3 - first driver regulatory domain request
  99 * 	4 - second driver regulatory domain request
 100 * 	5 - strict regulatory domain settings using the third driver regulatory
 101 * 	    domain request
 102 * 	6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 103 * 	           regulatory requests.
 104 */
 105enum hwsim_regtest {
 106	HWSIM_REGTEST_DISABLED = 0,
 107	HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 108	HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 109	HWSIM_REGTEST_DIFF_COUNTRY = 3,
 110	HWSIM_REGTEST_WORLD_ROAM = 4,
 111	HWSIM_REGTEST_CUSTOM_WORLD = 5,
 112	HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 113	HWSIM_REGTEST_STRICT_FOLLOW = 7,
 114	HWSIM_REGTEST_STRICT_ALL = 8,
 115	HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 116	HWSIM_REGTEST_ALL = 10,
 117};
 118
 119/* Set to one of the HWSIM_REGTEST_* values above */
 120static int regtest = HWSIM_REGTEST_DISABLED;
 121module_param(regtest, int, 0444);
 122MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 123
 124static const char *hwsim_alpha2s[] = {
 125	"FI",
 126	"AL",
 127	"US",
 128	"DE",
 129	"JP",
 130	"AL",
 131};
 132
 133static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 134	.n_reg_rules = 4,
 135	.alpha2 =  "99",
 136	.reg_rules = {
 137		REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 138		REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 139		REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 140		REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 141	}
 142};
 143
 144static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 145	.n_reg_rules = 2,
 146	.alpha2 =  "99",
 147	.reg_rules = {
 148		REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 149		REG_RULE(5725-10, 5850+10, 40, 0, 30,
 150			NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
 151	}
 152};
 153
 154struct hwsim_vif_priv {
 155	u32 magic;
 156	u8 bssid[ETH_ALEN];
 157	bool assoc;
 158	u16 aid;
 159};
 160
 161#define HWSIM_VIF_MAGIC	0x69537748
 162
 163static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 164{
 165	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 166	WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
 167}
 168
 169static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 170{
 171	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 172	vp->magic = HWSIM_VIF_MAGIC;
 173}
 174
 175static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 176{
 177	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 178	vp->magic = 0;
 179}
 180
 181struct hwsim_sta_priv {
 182	u32 magic;
 183};
 184
 185#define HWSIM_STA_MAGIC	0x6d537748
 186
 187static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 188{
 189	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 190	WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 191}
 192
 193static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 194{
 195	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 196	sp->magic = HWSIM_STA_MAGIC;
 197}
 198
 199static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 200{
 201	struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 202	sp->magic = 0;
 203}
 204
 205static struct class *hwsim_class;
 206
 207static struct net_device *hwsim_mon; /* global monitor netdev */
 208
 209#define CHAN2G(_freq)  { \
 210	.band = IEEE80211_BAND_2GHZ, \
 211	.center_freq = (_freq), \
 212	.hw_value = (_freq), \
 213	.max_power = 20, \
 214}
 215
 216#define CHAN5G(_freq) { \
 217	.band = IEEE80211_BAND_5GHZ, \
 218	.center_freq = (_freq), \
 219	.hw_value = (_freq), \
 220	.max_power = 20, \
 221}
 222
 223static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 224	CHAN2G(2412), /* Channel 1 */
 225	CHAN2G(2417), /* Channel 2 */
 226	CHAN2G(2422), /* Channel 3 */
 227	CHAN2G(2427), /* Channel 4 */
 228	CHAN2G(2432), /* Channel 5 */
 229	CHAN2G(2437), /* Channel 6 */
 230	CHAN2G(2442), /* Channel 7 */
 231	CHAN2G(2447), /* Channel 8 */
 232	CHAN2G(2452), /* Channel 9 */
 233	CHAN2G(2457), /* Channel 10 */
 234	CHAN2G(2462), /* Channel 11 */
 235	CHAN2G(2467), /* Channel 12 */
 236	CHAN2G(2472), /* Channel 13 */
 237	CHAN2G(2484), /* Channel 14 */
 238};
 239
 240static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 241	CHAN5G(5180), /* Channel 36 */
 242	CHAN5G(5200), /* Channel 40 */
 243	CHAN5G(5220), /* Channel 44 */
 244	CHAN5G(5240), /* Channel 48 */
 245
 246	CHAN5G(5260), /* Channel 52 */
 247	CHAN5G(5280), /* Channel 56 */
 248	CHAN5G(5300), /* Channel 60 */
 249	CHAN5G(5320), /* Channel 64 */
 250
 251	CHAN5G(5500), /* Channel 100 */
 252	CHAN5G(5520), /* Channel 104 */
 253	CHAN5G(5540), /* Channel 108 */
 254	CHAN5G(5560), /* Channel 112 */
 255	CHAN5G(5580), /* Channel 116 */
 256	CHAN5G(5600), /* Channel 120 */
 257	CHAN5G(5620), /* Channel 124 */
 258	CHAN5G(5640), /* Channel 128 */
 259	CHAN5G(5660), /* Channel 132 */
 260	CHAN5G(5680), /* Channel 136 */
 261	CHAN5G(5700), /* Channel 140 */
 262
 263	CHAN5G(5745), /* Channel 149 */
 264	CHAN5G(5765), /* Channel 153 */
 265	CHAN5G(5785), /* Channel 157 */
 266	CHAN5G(5805), /* Channel 161 */
 267	CHAN5G(5825), /* Channel 165 */
 268};
 269
 270static const struct ieee80211_rate hwsim_rates[] = {
 271	{ .bitrate = 10 },
 272	{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 273	{ .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 274	{ .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 275	{ .bitrate = 60 },
 276	{ .bitrate = 90 },
 277	{ .bitrate = 120 },
 278	{ .bitrate = 180 },
 279	{ .bitrate = 240 },
 280	{ .bitrate = 360 },
 281	{ .bitrate = 480 },
 282	{ .bitrate = 540 }
 283};
 284
 285static spinlock_t hwsim_radio_lock;
 286static struct list_head hwsim_radios;
 287
 288struct mac80211_hwsim_data {
 289	struct list_head list;
 290	struct ieee80211_hw *hw;
 291	struct device *dev;
 292	struct ieee80211_supported_band bands[2];
 293	struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 294	struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 295	struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 296
 297	struct mac_address addresses[2];
 298
 299	struct ieee80211_channel *channel;
 300	unsigned long beacon_int; /* in jiffies unit */
 301	unsigned int rx_filter;
 302	bool started, idle, scanning;
 303	struct mutex mutex;
 304	struct timer_list beacon_timer;
 305	enum ps_mode {
 306		PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 307	} ps;
 308	bool ps_poll_pending;
 309	struct dentry *debugfs;
 310	struct dentry *debugfs_ps;
 311
 312	struct sk_buff_head pending;	/* packets pending */
 313	/*
 314	 * Only radios in the same group can communicate together (the
 315	 * channel has to match too). Each bit represents a group. A
 316	 * radio can be in more then one group.
 317	 */
 318	u64 group;
 319	struct dentry *debugfs_group;
 320
 321	int power_level;
 
 
 
 322};
 323
 324
 325struct hwsim_radiotap_hdr {
 326	struct ieee80211_radiotap_header hdr;
 
 327	u8 rt_flags;
 328	u8 rt_rate;
 329	__le16 rt_channel;
 330	__le16 rt_chbitmask;
 331} __packed;
 332
 333/* MAC80211_HWSIM netlinf family */
 334static struct genl_family hwsim_genl_family = {
 335	.id = GENL_ID_GENERATE,
 336	.hdrsize = 0,
 337	.name = "MAC80211_HWSIM",
 338	.version = 1,
 339	.maxattr = HWSIM_ATTR_MAX,
 340};
 341
 342/* MAC80211_HWSIM netlink policy */
 343
 344static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 345	[HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
 346				       .len = 6*sizeof(u8) },
 347	[HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
 348					  .len = 6*sizeof(u8) },
 349	[HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 350			       .len = IEEE80211_MAX_DATA_LEN },
 351	[HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 352	[HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 353	[HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 354	[HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 355				 .len = IEEE80211_TX_MAX_RATES*sizeof(
 356					struct hwsim_tx_rate)},
 357	[HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 358};
 359
 360static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 361					struct net_device *dev)
 362{
 363	/* TODO: allow packet injection */
 364	dev_kfree_skb(skb);
 365	return NETDEV_TX_OK;
 366}
 367
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 368
 369static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 370				      struct sk_buff *tx_skb)
 371{
 372	struct mac80211_hwsim_data *data = hw->priv;
 373	struct sk_buff *skb;
 374	struct hwsim_radiotap_hdr *hdr;
 375	u16 flags;
 376	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 377	struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 378
 379	if (!netif_running(hwsim_mon))
 380		return;
 381
 382	skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 383	if (skb == NULL)
 384		return;
 385
 386	hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 387	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 388	hdr->hdr.it_pad = 0;
 389	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 390	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 391					  (1 << IEEE80211_RADIOTAP_RATE) |
 
 392					  (1 << IEEE80211_RADIOTAP_CHANNEL));
 
 393	hdr->rt_flags = 0;
 394	hdr->rt_rate = txrate->bitrate / 5;
 395	hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 396	flags = IEEE80211_CHAN_2GHZ;
 397	if (txrate->flags & IEEE80211_RATE_ERP_G)
 398		flags |= IEEE80211_CHAN_OFDM;
 399	else
 400		flags |= IEEE80211_CHAN_CCK;
 401	hdr->rt_chbitmask = cpu_to_le16(flags);
 402
 403	skb->dev = hwsim_mon;
 404	skb_set_mac_header(skb, 0);
 405	skb->ip_summed = CHECKSUM_UNNECESSARY;
 406	skb->pkt_type = PACKET_OTHERHOST;
 407	skb->protocol = htons(ETH_P_802_2);
 408	memset(skb->cb, 0, sizeof(skb->cb));
 409	netif_rx(skb);
 410}
 411
 412
 413static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
 414{
 415	struct mac80211_hwsim_data *data = hw->priv;
 416	struct sk_buff *skb;
 417	struct hwsim_radiotap_hdr *hdr;
 418	u16 flags;
 419	struct ieee80211_hdr *hdr11;
 420
 421	if (!netif_running(hwsim_mon))
 422		return;
 423
 424	skb = dev_alloc_skb(100);
 425	if (skb == NULL)
 426		return;
 427
 428	hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
 429	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 430	hdr->hdr.it_pad = 0;
 431	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 432	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 433					  (1 << IEEE80211_RADIOTAP_CHANNEL));
 434	hdr->rt_flags = 0;
 435	hdr->rt_rate = 0;
 436	hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
 437	flags = IEEE80211_CHAN_2GHZ;
 438	hdr->rt_chbitmask = cpu_to_le16(flags);
 439
 440	hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 441	hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 442					   IEEE80211_STYPE_ACK);
 443	hdr11->duration_id = cpu_to_le16(0);
 444	memcpy(hdr11->addr1, addr, ETH_ALEN);
 445
 446	skb->dev = hwsim_mon;
 447	skb_set_mac_header(skb, 0);
 448	skb->ip_summed = CHECKSUM_UNNECESSARY;
 449	skb->pkt_type = PACKET_OTHERHOST;
 450	skb->protocol = htons(ETH_P_802_2);
 451	memset(skb->cb, 0, sizeof(skb->cb));
 452	netif_rx(skb);
 453}
 454
 455
 456static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 457			   struct sk_buff *skb)
 458{
 459	switch (data->ps) {
 460	case PS_DISABLED:
 461		return true;
 462	case PS_ENABLED:
 463		return false;
 464	case PS_AUTO_POLL:
 465		/* TODO: accept (some) Beacons by default and other frames only
 466		 * if pending PS-Poll has been sent */
 467		return true;
 468	case PS_MANUAL_POLL:
 469		/* Allow unicast frames to own address if there is a pending
 470		 * PS-Poll */
 471		if (data->ps_poll_pending &&
 472		    memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
 473			   ETH_ALEN) == 0) {
 474			data->ps_poll_pending = false;
 475			return true;
 476		}
 477		return false;
 478	}
 479
 480	return true;
 481}
 482
 483
 484struct mac80211_hwsim_addr_match_data {
 485	bool ret;
 486	const u8 *addr;
 487};
 488
 489static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 490				     struct ieee80211_vif *vif)
 491{
 492	struct mac80211_hwsim_addr_match_data *md = data;
 493	if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 494		md->ret = true;
 495}
 496
 497
 498static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 499				      const u8 *addr)
 500{
 501	struct mac80211_hwsim_addr_match_data md;
 502
 503	if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
 504		return true;
 505
 506	md.ret = false;
 507	md.addr = addr;
 508	ieee80211_iterate_active_interfaces_atomic(data->hw,
 509						   mac80211_hwsim_addr_iter,
 510						   &md);
 511
 512	return md.ret;
 513}
 514
 515static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 516				       struct sk_buff *my_skb,
 517				       int dst_pid)
 518{
 519	struct sk_buff *skb;
 520	struct mac80211_hwsim_data *data = hw->priv;
 521	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 522	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 523	void *msg_head;
 524	unsigned int hwsim_flags = 0;
 525	int i;
 526	struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 527
 528	if (data->idle) {
 529		wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 530		dev_kfree_skb(my_skb);
 531		return;
 532	}
 533
 534	if (data->ps != PS_DISABLED)
 535		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 536	/* If the queue contains MAX_QUEUE skb's drop some */
 537	if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 538		/* Droping until WARN_QUEUE level */
 539		while (skb_queue_len(&data->pending) >= WARN_QUEUE)
 540			skb_dequeue(&data->pending);
 541	}
 542
 543	skb = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
 544	if (skb == NULL)
 545		goto nla_put_failure;
 546
 547	msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 548			       HWSIM_CMD_FRAME);
 549	if (msg_head == NULL) {
 550		printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 551		goto nla_put_failure;
 552	}
 553
 554	NLA_PUT(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 555		     sizeof(struct mac_address), data->addresses[1].addr);
 
 556
 557	/* We get the skb->data */
 558	NLA_PUT(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data);
 
 559
 560	/* We get the flags for this transmission, and we translate them to
 561	   wmediumd flags  */
 562
 563	if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 564		hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 565
 566	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 567		hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 568
 569	NLA_PUT_U32(skb, HWSIM_ATTR_FLAGS, hwsim_flags);
 
 570
 571	/* We get the tx control (rate and retries) info*/
 572
 573	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 574		tx_attempts[i].idx = info->status.rates[i].idx;
 575		tx_attempts[i].count = info->status.rates[i].count;
 576	}
 577
 578	NLA_PUT(skb, HWSIM_ATTR_TX_INFO,
 579		     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 580		     tx_attempts);
 
 581
 582	/* We create a cookie to identify this skb */
 583	NLA_PUT_U64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb);
 
 584
 585	genlmsg_end(skb, msg_head);
 586	genlmsg_unicast(&init_net, skb, dst_pid);
 587
 588	/* Enqueue the packet */
 589	skb_queue_tail(&data->pending, my_skb);
 590	return;
 591
 592nla_put_failure:
 593	printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
 594}
 595
 596static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 597					  struct sk_buff *skb)
 598{
 599	struct mac80211_hwsim_data *data = hw->priv, *data2;
 600	bool ack = false;
 601	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 602	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 603	struct ieee80211_rx_status rx_status;
 
 604
 605	if (data->idle) {
 606		wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
 607		return false;
 608	}
 609
 610	memset(&rx_status, 0, sizeof(rx_status));
 611	/* TODO: set mactime */
 612	rx_status.freq = data->channel->center_freq;
 613	rx_status.band = data->channel->band;
 614	rx_status.rate_idx = info->control.rates[0].idx;
 
 
 
 
 
 
 615	/* TODO: simulate real signal strength (and optional packet loss) */
 616	rx_status.signal = data->power_level - 50;
 617
 618	if (data->ps != PS_DISABLED)
 619		hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 620
 621	/* release the skb's source info */
 622	skb_orphan(skb);
 623	skb_dst_drop(skb);
 624	skb->mark = 0;
 625	secpath_reset(skb);
 626	nf_reset(skb);
 627
 628	/* Copy skb to all enabled radios that are on the current frequency */
 629	spin_lock(&hwsim_radio_lock);
 630	list_for_each_entry(data2, &hwsim_radios, list) {
 631		struct sk_buff *nskb;
 
 632
 633		if (data == data2)
 634			continue;
 635
 636		if (data2->idle || !data2->started ||
 637		    !hwsim_ps_rx_ok(data2, skb) ||
 638		    !data->channel || !data2->channel ||
 639		    data->channel->center_freq != data2->channel->center_freq ||
 640		    !(data->group & data2->group))
 641			continue;
 642
 643		nskb = skb_copy(skb, GFP_ATOMIC);
 644		if (nskb == NULL)
 645			continue;
 646
 647		if (mac80211_hwsim_addr_match(data2, hdr->addr1))
 648			ack = true;
 
 
 
 
 
 
 
 
 
 
 
 
 649		memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
 650		ieee80211_rx_irqsafe(data2->hw, nskb);
 651	}
 652	spin_unlock(&hwsim_radio_lock);
 653
 654	return ack;
 655}
 656
 657static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 658{
 659	bool ack;
 660	struct ieee80211_tx_info *txi;
 661	int _pid;
 662
 663	mac80211_hwsim_monitor_rx(hw, skb);
 664
 665	if (skb->len < 10) {
 666		/* Should not happen; just a sanity check for addr1 use */
 667		dev_kfree_skb(skb);
 668		return;
 669	}
 670
 671	/* wmediumd mode check */
 672	_pid = wmediumd_pid;
 673
 674	if (_pid)
 675		return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 676
 677	/* NO wmediumd detected, perfect medium simulation */
 678	ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
 679
 680	if (ack && skb->len >= 16) {
 681		struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
 682		mac80211_hwsim_monitor_ack(hw, hdr->addr2);
 683	}
 684
 685	txi = IEEE80211_SKB_CB(skb);
 686
 687	if (txi->control.vif)
 688		hwsim_check_magic(txi->control.vif);
 689	if (txi->control.sta)
 690		hwsim_check_sta_magic(txi->control.sta);
 691
 692	ieee80211_tx_info_clear_status(txi);
 
 
 
 
 
 693	if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
 694		txi->flags |= IEEE80211_TX_STAT_ACK;
 695	ieee80211_tx_status_irqsafe(hw, skb);
 696}
 697
 698
 699static int mac80211_hwsim_start(struct ieee80211_hw *hw)
 700{
 701	struct mac80211_hwsim_data *data = hw->priv;
 702	wiphy_debug(hw->wiphy, "%s\n", __func__);
 703	data->started = 1;
 704	return 0;
 705}
 706
 707
 708static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
 709{
 710	struct mac80211_hwsim_data *data = hw->priv;
 711	data->started = 0;
 712	del_timer(&data->beacon_timer);
 713	wiphy_debug(hw->wiphy, "%s\n", __func__);
 714}
 715
 716
 717static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
 718					struct ieee80211_vif *vif)
 719{
 720	wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 721		    __func__, ieee80211_vif_type_p2p(vif),
 722		    vif->addr);
 723	hwsim_set_magic(vif);
 724	return 0;
 725}
 726
 727
 728static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
 729					   struct ieee80211_vif *vif,
 730					   enum nl80211_iftype newtype,
 731					   bool newp2p)
 732{
 733	newtype = ieee80211_iftype_p2p(newtype, newp2p);
 734	wiphy_debug(hw->wiphy,
 735		    "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
 736		    __func__, ieee80211_vif_type_p2p(vif),
 737		    newtype, vif->addr);
 738	hwsim_check_magic(vif);
 739
 740	return 0;
 741}
 742
 743static void mac80211_hwsim_remove_interface(
 744	struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 745{
 746	wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
 747		    __func__, ieee80211_vif_type_p2p(vif),
 748		    vif->addr);
 749	hwsim_check_magic(vif);
 750	hwsim_clear_magic(vif);
 751}
 752
 753
 754static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 755				     struct ieee80211_vif *vif)
 756{
 757	struct ieee80211_hw *hw = arg;
 758	struct sk_buff *skb;
 759	struct ieee80211_tx_info *info;
 760	int _pid;
 761
 762	hwsim_check_magic(vif);
 763
 764	if (vif->type != NL80211_IFTYPE_AP &&
 765	    vif->type != NL80211_IFTYPE_MESH_POINT &&
 766	    vif->type != NL80211_IFTYPE_ADHOC)
 767		return;
 768
 769	skb = ieee80211_beacon_get(hw, vif);
 770	if (skb == NULL)
 771		return;
 772	info = IEEE80211_SKB_CB(skb);
 773
 774	mac80211_hwsim_monitor_rx(hw, skb);
 775
 776	/* wmediumd mode check */
 777	_pid = wmediumd_pid;
 778
 779	if (_pid)
 780		return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
 781
 782	mac80211_hwsim_tx_frame_no_nl(hw, skb);
 783	dev_kfree_skb(skb);
 784}
 785
 786
 787static void mac80211_hwsim_beacon(unsigned long arg)
 788{
 789	struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
 790	struct mac80211_hwsim_data *data = hw->priv;
 791
 792	if (!data->started)
 793		return;
 794
 795	ieee80211_iterate_active_interfaces_atomic(
 796		hw, mac80211_hwsim_beacon_tx, hw);
 797
 798	data->beacon_timer.expires = jiffies + data->beacon_int;
 799	add_timer(&data->beacon_timer);
 800}
 801
 802static const char *hwsim_chantypes[] = {
 803	[NL80211_CHAN_NO_HT] = "noht",
 804	[NL80211_CHAN_HT20] = "ht20",
 805	[NL80211_CHAN_HT40MINUS] = "ht40-",
 806	[NL80211_CHAN_HT40PLUS] = "ht40+",
 807};
 808
 809static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 810{
 811	struct mac80211_hwsim_data *data = hw->priv;
 812	struct ieee80211_conf *conf = &hw->conf;
 813	static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
 814		[IEEE80211_SMPS_AUTOMATIC] = "auto",
 815		[IEEE80211_SMPS_OFF] = "off",
 816		[IEEE80211_SMPS_STATIC] = "static",
 817		[IEEE80211_SMPS_DYNAMIC] = "dynamic",
 818	};
 819
 820	wiphy_debug(hw->wiphy,
 821		    "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
 822		    __func__,
 823		    conf->channel->center_freq,
 824		    hwsim_chantypes[conf->channel_type],
 825		    !!(conf->flags & IEEE80211_CONF_IDLE),
 826		    !!(conf->flags & IEEE80211_CONF_PS),
 827		    smps_modes[conf->smps_mode]);
 828
 829	data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
 830
 831	data->channel = conf->channel;
 832	data->power_level = conf->power_level;
 833	if (!data->started || !data->beacon_int)
 834		del_timer(&data->beacon_timer);
 835	else
 836		mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
 837
 838	return 0;
 839}
 840
 841
 842static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
 843					    unsigned int changed_flags,
 844					    unsigned int *total_flags,u64 multicast)
 845{
 846	struct mac80211_hwsim_data *data = hw->priv;
 847
 848	wiphy_debug(hw->wiphy, "%s\n", __func__);
 849
 850	data->rx_filter = 0;
 851	if (*total_flags & FIF_PROMISC_IN_BSS)
 852		data->rx_filter |= FIF_PROMISC_IN_BSS;
 853	if (*total_flags & FIF_ALLMULTI)
 854		data->rx_filter |= FIF_ALLMULTI;
 855
 856	*total_flags = data->rx_filter;
 857}
 858
 859static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
 860					    struct ieee80211_vif *vif,
 861					    struct ieee80211_bss_conf *info,
 862					    u32 changed)
 863{
 864	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 865	struct mac80211_hwsim_data *data = hw->priv;
 866
 867	hwsim_check_magic(vif);
 868
 869	wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
 870
 871	if (changed & BSS_CHANGED_BSSID) {
 872		wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
 873			    __func__, info->bssid);
 874		memcpy(vp->bssid, info->bssid, ETH_ALEN);
 875	}
 876
 877	if (changed & BSS_CHANGED_ASSOC) {
 878		wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
 879			    info->assoc, info->aid);
 880		vp->assoc = info->assoc;
 881		vp->aid = info->aid;
 882	}
 883
 884	if (changed & BSS_CHANGED_BEACON_INT) {
 885		wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
 886		data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
 887		if (WARN_ON(!data->beacon_int))
 888			data->beacon_int = 1;
 889		if (data->started)
 890			mod_timer(&data->beacon_timer,
 891				  jiffies + data->beacon_int);
 892	}
 893
 894	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 895		wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
 896			    info->use_cts_prot);
 897	}
 898
 899	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 900		wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
 901			    info->use_short_preamble);
 902	}
 903
 904	if (changed & BSS_CHANGED_ERP_SLOT) {
 905		wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
 906	}
 907
 908	if (changed & BSS_CHANGED_HT) {
 909		wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x, chantype=%s\n",
 910			    info->ht_operation_mode,
 911			    hwsim_chantypes[info->channel_type]);
 912	}
 913
 914	if (changed & BSS_CHANGED_BASIC_RATES) {
 915		wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
 916			    (unsigned long long) info->basic_rates);
 917	}
 918}
 919
 920static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
 921				  struct ieee80211_vif *vif,
 922				  struct ieee80211_sta *sta)
 923{
 924	hwsim_check_magic(vif);
 925	hwsim_set_sta_magic(sta);
 926
 927	return 0;
 928}
 929
 930static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
 931				     struct ieee80211_vif *vif,
 932				     struct ieee80211_sta *sta)
 933{
 934	hwsim_check_magic(vif);
 935	hwsim_clear_sta_magic(sta);
 936
 937	return 0;
 938}
 939
 940static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 941				      struct ieee80211_vif *vif,
 942				      enum sta_notify_cmd cmd,
 943				      struct ieee80211_sta *sta)
 944{
 945	hwsim_check_magic(vif);
 946
 947	switch (cmd) {
 948	case STA_NOTIFY_SLEEP:
 949	case STA_NOTIFY_AWAKE:
 950		/* TODO: make good use of these flags */
 951		break;
 952	default:
 953		WARN(1, "Invalid sta notify: %d\n", cmd);
 954		break;
 955	}
 956}
 957
 958static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
 959				  struct ieee80211_sta *sta,
 960				  bool set)
 961{
 962	hwsim_check_sta_magic(sta);
 963	return 0;
 964}
 965
 966static int mac80211_hwsim_conf_tx(
 967	struct ieee80211_hw *hw, u16 queue,
 
 968	const struct ieee80211_tx_queue_params *params)
 969{
 970	wiphy_debug(hw->wiphy,
 971		    "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
 972		    __func__, queue,
 973		    params->txop, params->cw_min,
 974		    params->cw_max, params->aifs);
 975	return 0;
 976}
 977
 978static int mac80211_hwsim_get_survey(
 979	struct ieee80211_hw *hw, int idx,
 980	struct survey_info *survey)
 981{
 982	struct ieee80211_conf *conf = &hw->conf;
 983
 984	wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
 985
 986	if (idx != 0)
 987		return -ENOENT;
 988
 989	/* Current channel */
 990	survey->channel = conf->channel;
 991
 992	/*
 993	 * Magically conjured noise level --- this is only ok for simulated hardware.
 994	 *
 995	 * A real driver which cannot determine the real channel noise MUST NOT
 996	 * report any noise, especially not a magically conjured one :-)
 997	 */
 998	survey->filled = SURVEY_INFO_NOISE_DBM;
 999	survey->noise = -92;
1000
1001	return 0;
1002}
1003
1004#ifdef CONFIG_NL80211_TESTMODE
1005/*
1006 * This section contains example code for using netlink
1007 * attributes with the testmode command in nl80211.
1008 */
1009
1010/* These enums need to be kept in sync with userspace */
1011enum hwsim_testmode_attr {
1012	__HWSIM_TM_ATTR_INVALID	= 0,
1013	HWSIM_TM_ATTR_CMD	= 1,
1014	HWSIM_TM_ATTR_PS	= 2,
1015
1016	/* keep last */
1017	__HWSIM_TM_ATTR_AFTER_LAST,
1018	HWSIM_TM_ATTR_MAX	= __HWSIM_TM_ATTR_AFTER_LAST - 1
1019};
1020
1021enum hwsim_testmode_cmd {
1022	HWSIM_TM_CMD_SET_PS		= 0,
1023	HWSIM_TM_CMD_GET_PS		= 1,
1024};
1025
1026static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1027	[HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1028	[HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1029};
1030
1031static int hwsim_fops_ps_write(void *dat, u64 val);
1032
1033static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1034				       void *data, int len)
1035{
1036	struct mac80211_hwsim_data *hwsim = hw->priv;
1037	struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1038	struct sk_buff *skb;
1039	int err, ps;
1040
1041	err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1042			hwsim_testmode_policy);
1043	if (err)
1044		return err;
1045
1046	if (!tb[HWSIM_TM_ATTR_CMD])
1047		return -EINVAL;
1048
1049	switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1050	case HWSIM_TM_CMD_SET_PS:
1051		if (!tb[HWSIM_TM_ATTR_PS])
1052			return -EINVAL;
1053		ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1054		return hwsim_fops_ps_write(hwsim, ps);
1055	case HWSIM_TM_CMD_GET_PS:
1056		skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1057						nla_total_size(sizeof(u32)));
1058		if (!skb)
1059			return -ENOMEM;
1060		NLA_PUT_U32(skb, HWSIM_TM_ATTR_PS, hwsim->ps);
 
1061		return cfg80211_testmode_reply(skb);
1062	default:
1063		return -EOPNOTSUPP;
1064	}
1065
1066 nla_put_failure:
1067	kfree_skb(skb);
1068	return -ENOBUFS;
1069}
1070#endif
1071
1072static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1073				       struct ieee80211_vif *vif,
1074				       enum ieee80211_ampdu_mlme_action action,
1075				       struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1076				       u8 buf_size)
1077{
1078	switch (action) {
1079	case IEEE80211_AMPDU_TX_START:
1080		ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1081		break;
1082	case IEEE80211_AMPDU_TX_STOP:
1083		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1084		break;
1085	case IEEE80211_AMPDU_TX_OPERATIONAL:
1086		break;
1087	case IEEE80211_AMPDU_RX_START:
1088	case IEEE80211_AMPDU_RX_STOP:
1089		break;
1090	default:
1091		return -EOPNOTSUPP;
1092	}
1093
1094	return 0;
1095}
1096
1097static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1098{
1099	/* Not implemented, queues only on kernel side */
1100}
1101
1102struct hw_scan_done {
1103	struct delayed_work w;
1104	struct ieee80211_hw *hw;
1105};
1106
1107static void hw_scan_done(struct work_struct *work)
1108{
1109	struct hw_scan_done *hsd =
1110		container_of(work, struct hw_scan_done, w.work);
1111
1112	ieee80211_scan_completed(hsd->hw, false);
1113	kfree(hsd);
1114}
1115
1116static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1117				  struct ieee80211_vif *vif,
1118				  struct cfg80211_scan_request *req)
1119{
1120	struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1121	int i;
1122
1123	if (!hsd)
1124		return -ENOMEM;
1125
1126	hsd->hw = hw;
1127	INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1128
1129	printk(KERN_DEBUG "hwsim hw_scan request\n");
1130	for (i = 0; i < req->n_channels; i++)
1131		printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1132			req->channels[i]->center_freq);
1133	print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1134			16, 1, req->ie, req->ie_len, 1);
1135
1136	ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1137
1138	return 0;
1139}
1140
1141static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1142{
1143	struct mac80211_hwsim_data *hwsim = hw->priv;
1144
1145	mutex_lock(&hwsim->mutex);
1146
1147	if (hwsim->scanning) {
1148		printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1149		goto out;
1150	}
1151
1152	printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1153	hwsim->scanning = true;
1154
1155out:
1156	mutex_unlock(&hwsim->mutex);
1157}
1158
1159static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1160{
1161	struct mac80211_hwsim_data *hwsim = hw->priv;
1162
1163	mutex_lock(&hwsim->mutex);
1164
1165	printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1166	hwsim->scanning = false;
1167
1168	mutex_unlock(&hwsim->mutex);
1169}
1170
1171static struct ieee80211_ops mac80211_hwsim_ops =
1172{
1173	.tx = mac80211_hwsim_tx,
1174	.start = mac80211_hwsim_start,
1175	.stop = mac80211_hwsim_stop,
1176	.add_interface = mac80211_hwsim_add_interface,
1177	.change_interface = mac80211_hwsim_change_interface,
1178	.remove_interface = mac80211_hwsim_remove_interface,
1179	.config = mac80211_hwsim_config,
1180	.configure_filter = mac80211_hwsim_configure_filter,
1181	.bss_info_changed = mac80211_hwsim_bss_info_changed,
1182	.sta_add = mac80211_hwsim_sta_add,
1183	.sta_remove = mac80211_hwsim_sta_remove,
1184	.sta_notify = mac80211_hwsim_sta_notify,
1185	.set_tim = mac80211_hwsim_set_tim,
1186	.conf_tx = mac80211_hwsim_conf_tx,
1187	.get_survey = mac80211_hwsim_get_survey,
1188	CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1189	.ampdu_action = mac80211_hwsim_ampdu_action,
1190	.sw_scan_start = mac80211_hwsim_sw_scan,
1191	.sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1192	.flush = mac80211_hwsim_flush,
 
 
1193};
1194
1195
1196static void mac80211_hwsim_free(void)
1197{
1198	struct list_head tmplist, *i, *tmp;
1199	struct mac80211_hwsim_data *data, *tmpdata;
1200
1201	INIT_LIST_HEAD(&tmplist);
1202
1203	spin_lock_bh(&hwsim_radio_lock);
1204	list_for_each_safe(i, tmp, &hwsim_radios)
1205		list_move(i, &tmplist);
1206	spin_unlock_bh(&hwsim_radio_lock);
1207
1208	list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1209		debugfs_remove(data->debugfs_group);
1210		debugfs_remove(data->debugfs_ps);
1211		debugfs_remove(data->debugfs);
1212		ieee80211_unregister_hw(data->hw);
1213		device_unregister(data->dev);
1214		ieee80211_free_hw(data->hw);
1215	}
1216	class_destroy(hwsim_class);
1217}
1218
1219
1220static struct device_driver mac80211_hwsim_driver = {
1221	.name = "mac80211_hwsim"
1222};
1223
1224static const struct net_device_ops hwsim_netdev_ops = {
1225	.ndo_start_xmit 	= hwsim_mon_xmit,
1226	.ndo_change_mtu		= eth_change_mtu,
1227	.ndo_set_mac_address 	= eth_mac_addr,
1228	.ndo_validate_addr	= eth_validate_addr,
1229};
1230
1231static void hwsim_mon_setup(struct net_device *dev)
1232{
1233	dev->netdev_ops = &hwsim_netdev_ops;
1234	dev->destructor = free_netdev;
1235	ether_setup(dev);
1236	dev->tx_queue_len = 0;
1237	dev->type = ARPHRD_IEEE80211_RADIOTAP;
1238	memset(dev->dev_addr, 0, ETH_ALEN);
1239	dev->dev_addr[0] = 0x12;
1240}
1241
1242
1243static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1244{
1245	struct mac80211_hwsim_data *data = dat;
1246	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1247	struct sk_buff *skb;
1248	struct ieee80211_pspoll *pspoll;
1249	int _pid;
1250
1251	if (!vp->assoc)
1252		return;
1253
1254	wiphy_debug(data->hw->wiphy,
1255		    "%s: send PS-Poll to %pM for aid %d\n",
1256		    __func__, vp->bssid, vp->aid);
1257
1258	skb = dev_alloc_skb(sizeof(*pspoll));
1259	if (!skb)
1260		return;
1261	pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1262	pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1263					    IEEE80211_STYPE_PSPOLL |
1264					    IEEE80211_FCTL_PM);
1265	pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1266	memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1267	memcpy(pspoll->ta, mac, ETH_ALEN);
1268
1269	/* wmediumd mode check */
1270	_pid = wmediumd_pid;
1271
1272	if (_pid)
1273		return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1274
1275	if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1276		printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1277	dev_kfree_skb(skb);
1278}
1279
1280
1281static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1282				struct ieee80211_vif *vif, int ps)
1283{
1284	struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1285	struct sk_buff *skb;
1286	struct ieee80211_hdr *hdr;
1287	int _pid;
1288
1289	if (!vp->assoc)
1290		return;
1291
1292	wiphy_debug(data->hw->wiphy,
1293		    "%s: send data::nullfunc to %pM ps=%d\n",
1294		    __func__, vp->bssid, ps);
1295
1296	skb = dev_alloc_skb(sizeof(*hdr));
1297	if (!skb)
1298		return;
1299	hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1300	hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1301					 IEEE80211_STYPE_NULLFUNC |
1302					 (ps ? IEEE80211_FCTL_PM : 0));
1303	hdr->duration_id = cpu_to_le16(0);
1304	memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1305	memcpy(hdr->addr2, mac, ETH_ALEN);
1306	memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1307
1308	/* wmediumd mode check */
1309	_pid = wmediumd_pid;
1310
1311	if (_pid)
1312		return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1313
1314	if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1315		printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1316	dev_kfree_skb(skb);
1317}
1318
1319
1320static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1321				   struct ieee80211_vif *vif)
1322{
1323	struct mac80211_hwsim_data *data = dat;
1324	hwsim_send_nullfunc(data, mac, vif, 1);
1325}
1326
1327
1328static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1329				      struct ieee80211_vif *vif)
1330{
1331	struct mac80211_hwsim_data *data = dat;
1332	hwsim_send_nullfunc(data, mac, vif, 0);
1333}
1334
1335
1336static int hwsim_fops_ps_read(void *dat, u64 *val)
1337{
1338	struct mac80211_hwsim_data *data = dat;
1339	*val = data->ps;
1340	return 0;
1341}
1342
1343static int hwsim_fops_ps_write(void *dat, u64 val)
1344{
1345	struct mac80211_hwsim_data *data = dat;
1346	enum ps_mode old_ps;
1347
1348	if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1349	    val != PS_MANUAL_POLL)
1350		return -EINVAL;
1351
1352	old_ps = data->ps;
1353	data->ps = val;
1354
1355	if (val == PS_MANUAL_POLL) {
1356		ieee80211_iterate_active_interfaces(data->hw,
1357						    hwsim_send_ps_poll, data);
1358		data->ps_poll_pending = true;
1359	} else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1360		ieee80211_iterate_active_interfaces(data->hw,
1361						    hwsim_send_nullfunc_ps,
1362						    data);
1363	} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1364		ieee80211_iterate_active_interfaces(data->hw,
1365						    hwsim_send_nullfunc_no_ps,
1366						    data);
1367	}
1368
1369	return 0;
1370}
1371
1372DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1373			"%llu\n");
1374
1375
1376static int hwsim_fops_group_read(void *dat, u64 *val)
1377{
1378	struct mac80211_hwsim_data *data = dat;
1379	*val = data->group;
1380	return 0;
1381}
1382
1383static int hwsim_fops_group_write(void *dat, u64 val)
1384{
1385	struct mac80211_hwsim_data *data = dat;
1386	data->group = val;
1387	return 0;
1388}
1389
1390DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1391			hwsim_fops_group_read, hwsim_fops_group_write,
1392			"%llx\n");
1393
1394struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1395			     struct mac_address *addr)
1396{
1397	struct mac80211_hwsim_data *data;
1398	bool _found = false;
1399
1400	spin_lock_bh(&hwsim_radio_lock);
1401	list_for_each_entry(data, &hwsim_radios, list) {
1402		if (memcmp(data->addresses[1].addr, addr,
1403			  sizeof(struct mac_address)) == 0) {
1404			_found = true;
1405			break;
1406		}
1407	}
1408	spin_unlock_bh(&hwsim_radio_lock);
1409
1410	if (!_found)
1411		return NULL;
1412
1413	return data;
1414}
1415
1416static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1417					   struct genl_info *info)
1418{
1419
1420	struct ieee80211_hdr *hdr;
1421	struct mac80211_hwsim_data *data2;
1422	struct ieee80211_tx_info *txi;
1423	struct hwsim_tx_rate *tx_attempts;
1424	struct sk_buff __user *ret_skb;
1425	struct sk_buff *skb, *tmp;
1426	struct mac_address *src;
1427	unsigned int hwsim_flags;
1428
1429	int i;
1430	bool found = false;
1431
1432	if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1433	   !info->attrs[HWSIM_ATTR_FLAGS] ||
1434	   !info->attrs[HWSIM_ATTR_COOKIE] ||
1435	   !info->attrs[HWSIM_ATTR_TX_INFO])
1436		goto out;
1437
1438	src = (struct mac_address *)nla_data(
1439				   info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1440	hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1441
1442	ret_skb = (struct sk_buff __user *)
1443		  (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1444
1445	data2 = get_hwsim_data_ref_from_addr(src);
1446
1447	if (data2 == NULL)
1448		goto out;
1449
1450	/* look for the skb matching the cookie passed back from user */
1451	skb_queue_walk_safe(&data2->pending, skb, tmp) {
1452		if (skb == ret_skb) {
1453			skb_unlink(skb, &data2->pending);
1454			found = true;
1455			break;
1456		}
1457	}
1458
1459	/* not found */
1460	if (!found)
1461		goto out;
1462
1463	/* Tx info received because the frame was broadcasted on user space,
1464	 so we get all the necessary info: tx attempts and skb control buff */
1465
1466	tx_attempts = (struct hwsim_tx_rate *)nla_data(
1467		       info->attrs[HWSIM_ATTR_TX_INFO]);
1468
1469	/* now send back TX status */
1470	txi = IEEE80211_SKB_CB(skb);
1471
1472	if (txi->control.vif)
1473		hwsim_check_magic(txi->control.vif);
1474	if (txi->control.sta)
1475		hwsim_check_sta_magic(txi->control.sta);
1476
1477	ieee80211_tx_info_clear_status(txi);
1478
1479	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1480		txi->status.rates[i].idx = tx_attempts[i].idx;
1481		txi->status.rates[i].count = tx_attempts[i].count;
1482		/*txi->status.rates[i].flags = 0;*/
1483	}
1484
1485	txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1486
1487	if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1488	   (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1489		if (skb->len >= 16) {
1490			hdr = (struct ieee80211_hdr *) skb->data;
1491			mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1492		}
 
1493	}
1494	ieee80211_tx_status_irqsafe(data2->hw, skb);
1495	return 0;
1496out:
1497	return -EINVAL;
1498
1499}
1500
1501static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1502					  struct genl_info *info)
1503{
1504
1505	struct mac80211_hwsim_data  *data2;
1506	struct ieee80211_rx_status rx_status;
1507	struct mac_address *dst;
1508	int frame_data_len;
1509	char *frame_data;
1510	struct sk_buff *skb = NULL;
1511
1512	if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1513	   !info->attrs[HWSIM_ATTR_FRAME] ||
1514	   !info->attrs[HWSIM_ATTR_RX_RATE] ||
1515	   !info->attrs[HWSIM_ATTR_SIGNAL])
1516		goto out;
1517
1518	dst = (struct mac_address *)nla_data(
1519				   info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1520
1521	frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1522	frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1523
1524	/* Allocate new skb here */
1525	skb = alloc_skb(frame_data_len, GFP_KERNEL);
1526	if (skb == NULL)
1527		goto err;
1528
1529	if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1530		/* Copy the data */
1531		memcpy(skb_put(skb, frame_data_len), frame_data,
1532		       frame_data_len);
1533	} else
1534		goto err;
1535
1536	data2 = get_hwsim_data_ref_from_addr(dst);
1537
1538	if (data2 == NULL)
1539		goto out;
1540
1541	/* check if radio is configured properly */
1542
1543	if (data2->idle || !data2->started || !data2->channel)
1544		goto out;
1545
1546	/*A frame is received from user space*/
1547	memset(&rx_status, 0, sizeof(rx_status));
1548	rx_status.freq = data2->channel->center_freq;
1549	rx_status.band = data2->channel->band;
1550	rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1551	rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1552
1553	memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1554	ieee80211_rx_irqsafe(data2->hw, skb);
1555
1556	return 0;
1557err:
1558	printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1559	goto out;
1560out:
1561	dev_kfree_skb(skb);
1562	return -EINVAL;
1563}
1564
1565static int hwsim_register_received_nl(struct sk_buff *skb_2,
1566				      struct genl_info *info)
1567{
1568	if (info == NULL)
1569		goto out;
1570
1571	wmediumd_pid = info->snd_pid;
1572
1573	printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1574	"switching to wmediumd mode with pid %d\n", info->snd_pid);
1575
1576	return 0;
1577out:
1578	printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1579	return -EINVAL;
1580}
1581
1582/* Generic Netlink operations array */
1583static struct genl_ops hwsim_ops[] = {
1584	{
1585		.cmd = HWSIM_CMD_REGISTER,
1586		.policy = hwsim_genl_policy,
1587		.doit = hwsim_register_received_nl,
1588		.flags = GENL_ADMIN_PERM,
1589	},
1590	{
1591		.cmd = HWSIM_CMD_FRAME,
1592		.policy = hwsim_genl_policy,
1593		.doit = hwsim_cloned_frame_received_nl,
1594	},
1595	{
1596		.cmd = HWSIM_CMD_TX_INFO_FRAME,
1597		.policy = hwsim_genl_policy,
1598		.doit = hwsim_tx_info_frame_received_nl,
1599	},
1600};
1601
1602static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1603					 unsigned long state,
1604					 void *_notify)
1605{
1606	struct netlink_notify *notify = _notify;
1607
1608	if (state != NETLINK_URELEASE)
1609		return NOTIFY_DONE;
1610
1611	if (notify->pid == wmediumd_pid) {
1612		printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1613		       " socket, switching to perfect channel medium\n");
1614		wmediumd_pid = 0;
1615	}
1616	return NOTIFY_DONE;
1617
1618}
1619
1620static struct notifier_block hwsim_netlink_notifier = {
1621	.notifier_call = mac80211_hwsim_netlink_notify,
1622};
1623
1624static int hwsim_init_netlink(void)
1625{
1626	int rc;
1627	printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1628
1629	wmediumd_pid = 0;
1630
1631	rc = genl_register_family_with_ops(&hwsim_genl_family,
1632		hwsim_ops, ARRAY_SIZE(hwsim_ops));
1633	if (rc)
1634		goto failure;
1635
1636	rc = netlink_register_notifier(&hwsim_netlink_notifier);
1637	if (rc)
1638		goto failure;
1639
1640	return 0;
1641
1642failure:
1643	printk(KERN_DEBUG "mac80211_hwsim: error occured in %s\n", __func__);
1644	return -EINVAL;
1645}
1646
1647static void hwsim_exit_netlink(void)
1648{
1649	int ret;
1650
1651	printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1652	/* unregister the notifier */
1653	netlink_unregister_notifier(&hwsim_netlink_notifier);
1654	/* unregister the family */
1655	ret = genl_unregister_family(&hwsim_genl_family);
1656	if (ret)
1657		printk(KERN_DEBUG "mac80211_hwsim: "
1658		       "unregister family %i\n", ret);
1659}
1660
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1661static int __init init_mac80211_hwsim(void)
1662{
1663	int i, err = 0;
1664	u8 addr[ETH_ALEN];
1665	struct mac80211_hwsim_data *data;
1666	struct ieee80211_hw *hw;
1667	enum ieee80211_band band;
1668
1669	if (radios < 1 || radios > 100)
1670		return -EINVAL;
1671
1672	if (fake_hw_scan) {
1673		mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1674		mac80211_hwsim_ops.sw_scan_start = NULL;
1675		mac80211_hwsim_ops.sw_scan_complete = NULL;
1676	}
1677
1678	spin_lock_init(&hwsim_radio_lock);
1679	INIT_LIST_HEAD(&hwsim_radios);
1680
1681	hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1682	if (IS_ERR(hwsim_class))
1683		return PTR_ERR(hwsim_class);
1684
1685	memset(addr, 0, ETH_ALEN);
1686	addr[0] = 0x02;
1687
1688	for (i = 0; i < radios; i++) {
1689		printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1690		       i);
1691		hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1692		if (!hw) {
1693			printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1694			       "failed\n");
1695			err = -ENOMEM;
1696			goto failed;
1697		}
1698		data = hw->priv;
1699		data->hw = hw;
1700
1701		data->dev = device_create(hwsim_class, NULL, 0, hw,
1702					  "hwsim%d", i);
1703		if (IS_ERR(data->dev)) {
1704			printk(KERN_DEBUG
1705			       "mac80211_hwsim: device_create "
1706			       "failed (%ld)\n", PTR_ERR(data->dev));
1707			err = -ENOMEM;
1708			goto failed_drvdata;
1709		}
1710		data->dev->driver = &mac80211_hwsim_driver;
1711		skb_queue_head_init(&data->pending);
1712
1713		SET_IEEE80211_DEV(hw, data->dev);
1714		addr[3] = i >> 8;
1715		addr[4] = i;
1716		memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1717		memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1718		data->addresses[1].addr[0] |= 0x40;
1719		hw->wiphy->n_addresses = 2;
1720		hw->wiphy->addresses = data->addresses;
1721
 
 
 
1722		if (fake_hw_scan) {
1723			hw->wiphy->max_scan_ssids = 255;
1724			hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1725		}
1726
1727		hw->channel_change_time = 1;
1728		hw->queues = 4;
1729		hw->wiphy->interface_modes =
1730			BIT(NL80211_IFTYPE_STATION) |
1731			BIT(NL80211_IFTYPE_AP) |
1732			BIT(NL80211_IFTYPE_P2P_CLIENT) |
1733			BIT(NL80211_IFTYPE_P2P_GO) |
1734			BIT(NL80211_IFTYPE_ADHOC) |
1735			BIT(NL80211_IFTYPE_MESH_POINT);
1736
1737		hw->flags = IEEE80211_HW_MFP_CAPABLE |
1738			    IEEE80211_HW_SIGNAL_DBM |
1739			    IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1740			    IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1741			    IEEE80211_HW_AMPDU_AGGREGATION;
 
 
 
 
1742
1743		/* ask mac80211 to reserve space for magic */
1744		hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1745		hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1746
1747		memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1748			sizeof(hwsim_channels_2ghz));
1749		memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1750			sizeof(hwsim_channels_5ghz));
1751		memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1752
1753		for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1754			struct ieee80211_supported_band *sband = &data->bands[band];
1755			switch (band) {
1756			case IEEE80211_BAND_2GHZ:
1757				sband->channels = data->channels_2ghz;
1758				sband->n_channels =
1759					ARRAY_SIZE(hwsim_channels_2ghz);
1760				sband->bitrates = data->rates;
1761				sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1762				break;
1763			case IEEE80211_BAND_5GHZ:
1764				sband->channels = data->channels_5ghz;
1765				sband->n_channels =
1766					ARRAY_SIZE(hwsim_channels_5ghz);
1767				sband->bitrates = data->rates + 4;
1768				sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1769				break;
1770			default:
1771				break;
1772			}
1773
1774			sband->ht_cap.ht_supported = true;
1775			sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1776				IEEE80211_HT_CAP_GRN_FLD |
1777				IEEE80211_HT_CAP_SGI_40 |
1778				IEEE80211_HT_CAP_DSSSCCK40;
1779			sband->ht_cap.ampdu_factor = 0x3;
1780			sband->ht_cap.ampdu_density = 0x6;
1781			memset(&sband->ht_cap.mcs, 0,
1782			       sizeof(sband->ht_cap.mcs));
1783			sband->ht_cap.mcs.rx_mask[0] = 0xff;
1784			sband->ht_cap.mcs.rx_mask[1] = 0xff;
1785			sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1786
1787			hw->wiphy->bands[band] = sband;
1788		}
1789		/* By default all radios are belonging to the first group */
1790		data->group = 1;
1791		mutex_init(&data->mutex);
1792
1793		/* Enable frame retransmissions for lossy channels */
1794		hw->max_rates = 4;
1795		hw->max_rate_tries = 11;
1796
1797		/* Work to be done prior to ieee80211_register_hw() */
1798		switch (regtest) {
1799		case HWSIM_REGTEST_DISABLED:
1800		case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1801		case HWSIM_REGTEST_DRIVER_REG_ALL:
1802		case HWSIM_REGTEST_DIFF_COUNTRY:
1803			/*
1804			 * Nothing to be done for driver regulatory domain
1805			 * hints prior to ieee80211_register_hw()
1806			 */
1807			break;
1808		case HWSIM_REGTEST_WORLD_ROAM:
1809			if (i == 0) {
1810				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1811				wiphy_apply_custom_regulatory(hw->wiphy,
1812					&hwsim_world_regdom_custom_01);
1813			}
1814			break;
1815		case HWSIM_REGTEST_CUSTOM_WORLD:
1816			hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1817			wiphy_apply_custom_regulatory(hw->wiphy,
1818				&hwsim_world_regdom_custom_01);
1819			break;
1820		case HWSIM_REGTEST_CUSTOM_WORLD_2:
1821			if (i == 0) {
1822				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1823				wiphy_apply_custom_regulatory(hw->wiphy,
1824					&hwsim_world_regdom_custom_01);
1825			} else if (i == 1) {
1826				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1827				wiphy_apply_custom_regulatory(hw->wiphy,
1828					&hwsim_world_regdom_custom_02);
1829			}
1830			break;
1831		case HWSIM_REGTEST_STRICT_ALL:
1832			hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1833			break;
1834		case HWSIM_REGTEST_STRICT_FOLLOW:
1835		case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1836			if (i == 0)
1837				hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1838			break;
1839		case HWSIM_REGTEST_ALL:
1840			if (i == 0) {
1841				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1842				wiphy_apply_custom_regulatory(hw->wiphy,
1843					&hwsim_world_regdom_custom_01);
1844			} else if (i == 1) {
1845				hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1846				wiphy_apply_custom_regulatory(hw->wiphy,
1847					&hwsim_world_regdom_custom_02);
1848			} else if (i == 4)
1849				hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1850			break;
1851		default:
1852			break;
1853		}
1854
1855		/* give the regulatory workqueue a chance to run */
1856		if (regtest)
1857			schedule_timeout_interruptible(1);
1858		err = ieee80211_register_hw(hw);
1859		if (err < 0) {
1860			printk(KERN_DEBUG "mac80211_hwsim: "
1861			       "ieee80211_register_hw failed (%d)\n", err);
1862			goto failed_hw;
1863		}
1864
1865		/* Work to be done after to ieee80211_register_hw() */
1866		switch (regtest) {
1867		case HWSIM_REGTEST_WORLD_ROAM:
1868		case HWSIM_REGTEST_DISABLED:
1869			break;
1870		case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1871			if (!i)
1872				regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1873			break;
1874		case HWSIM_REGTEST_DRIVER_REG_ALL:
1875		case HWSIM_REGTEST_STRICT_ALL:
1876			regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1877			break;
1878		case HWSIM_REGTEST_DIFF_COUNTRY:
1879			if (i < ARRAY_SIZE(hwsim_alpha2s))
1880				regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1881			break;
1882		case HWSIM_REGTEST_CUSTOM_WORLD:
1883		case HWSIM_REGTEST_CUSTOM_WORLD_2:
1884			/*
1885			 * Nothing to be done for custom world regulatory
1886			 * domains after to ieee80211_register_hw
1887			 */
1888			break;
1889		case HWSIM_REGTEST_STRICT_FOLLOW:
1890			if (i == 0)
1891				regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1892			break;
1893		case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1894			if (i == 0)
1895				regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1896			else if (i == 1)
1897				regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1898			break;
1899		case HWSIM_REGTEST_ALL:
1900			if (i == 2)
1901				regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1902			else if (i == 3)
1903				regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1904			else if (i == 4)
1905				regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1906			break;
1907		default:
1908			break;
1909		}
1910
1911		wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1912			    hw->wiphy->perm_addr);
1913
1914		data->debugfs = debugfs_create_dir("hwsim",
1915						   hw->wiphy->debugfsdir);
1916		data->debugfs_ps = debugfs_create_file("ps", 0666,
1917						       data->debugfs, data,
1918						       &hwsim_fops_ps);
1919		data->debugfs_group = debugfs_create_file("group", 0666,
1920							data->debugfs, data,
1921							&hwsim_fops_group);
1922
1923		setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1924			    (unsigned long) hw);
1925
1926		list_add_tail(&data->list, &hwsim_radios);
1927	}
1928
1929	hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1930	if (hwsim_mon == NULL)
1931		goto failed;
1932
1933	rtnl_lock();
1934
1935	err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1936	if (err < 0)
1937		goto failed_mon;
1938
1939
1940	err = register_netdevice(hwsim_mon);
1941	if (err < 0)
1942		goto failed_mon;
1943
1944	rtnl_unlock();
1945
1946	err = hwsim_init_netlink();
1947	if (err < 0)
1948		goto failed_nl;
1949
1950	return 0;
1951
1952failed_nl:
1953	printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
1954	return err;
1955
1956failed_mon:
1957	rtnl_unlock();
1958	free_netdev(hwsim_mon);
1959	mac80211_hwsim_free();
1960	return err;
1961
1962failed_hw:
1963	device_unregister(data->dev);
1964failed_drvdata:
1965	ieee80211_free_hw(hw);
1966failed:
1967	mac80211_hwsim_free();
1968	return err;
1969}
1970
1971
1972static void __exit exit_mac80211_hwsim(void)
1973{
1974	printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
1975
1976	hwsim_exit_netlink();
1977
1978	mac80211_hwsim_free();
1979	unregister_netdev(hwsim_mon);
1980}
1981
1982
1983module_init(init_mac80211_hwsim);
1984module_exit(exit_mac80211_hwsim);