drivers/net/wireless/mac80211_hwsim.c

   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/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include "mac80211_hwsim.h"
  34
  35 #define WARN_QUEUE 100
  36 #define MAX_QUEUE 200
  37
  38 MODULE_AUTHOR("Jouni Malinen");
  39 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  40 MODULE_LICENSE("GPL");
  41
  42 static u32 wmediumd_portid;
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 static bool support_p2p_device = true;
  61 module_param(support_p2p_device, bool, 0444);
  62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  63
  64 /**
  65  * enum hwsim_regtest - the type of regulatory tests we offer
  66  *
  67  * These are the different values you can use for the regtest
  68  * module parameter. This is useful to help test world roaming
  69  * and the driver regulatory_hint() call and combinations of these.
  70  * If you want to do specific alpha2 regulatory domain tests simply
  71  * use the userspace regulatory request as that will be respected as
  72  * well without the need of this module parameter. This is designed
  73  * only for testing the driver regulatory request, world roaming
  74  * and all possible combinations.
  75  *
  76  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  77  *      this is the default value.
  78  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  79  *      hint, only one driver regulatory hint will be sent as such the
  80  *      secondary radios are expected to follow.
  81  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  82  *      request with all radios reporting the same regulatory domain.
  83  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  84  *      different regulatory domains requests. Expected behaviour is for
  85  *      an intersection to occur but each device will still use their
  86  *      respective regulatory requested domains. Subsequent radios will
  87  *      use the resulting intersection.
  88  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  89  *      this by using a custom beacon-capable regulatory domain for the first
  90  *      radio. All other device world roam.
  91  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  92  *      domain requests. All radios will adhere to this custom world regulatory
  93  *      domain.
  94  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  95  *      domain requests. The first radio will adhere to the first custom world
  96  *      regulatory domain, the second one to the second custom world regulatory
  97  *      domain. All other devices will world roam.
  98  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  99  *      settings, only the first radio will send a regulatory domain request
 100  *      and use strict settings. The rest of the radios are expected to follow.
 101  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 102  *      settings. All radios will adhere to this.
 103  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 104  *      domain settings, combined with secondary driver regulatory domain
 105  *      settings. The first radio will get a strict regulatory domain setting
 106  *      using the first driver regulatory request and the second radio will use
 107  *      non-strict settings using the second driver regulatory request. All
 108  *      other devices should follow the intersection created between the
 109  *      first two.
 110  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 111  *      at least 6 radios for a complete test. We will test in this order:
 112  *      1 - driver custom world regulatory domain
 113  *      2 - second custom world regulatory domain
 114  *      3 - first driver regulatory domain request
 115  *      4 - second driver regulatory domain request
 116  *      5 - strict regulatory domain settings using the third driver regulatory
 117  *          domain request
 118  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 119  *                 regulatory requests.
 120  */
 121 enum hwsim_regtest {
 122         HWSIM_REGTEST_DISABLED = 0,
 123         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 124         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 125         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 126         HWSIM_REGTEST_WORLD_ROAM = 4,
 127         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 128         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 129         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 130         HWSIM_REGTEST_STRICT_ALL = 8,
 131         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 132         HWSIM_REGTEST_ALL = 10,
 133 };
 134
 135 /* Set to one of the HWSIM_REGTEST_* values above */
 136 static int regtest = HWSIM_REGTEST_DISABLED;
 137 module_param(regtest, int, 0444);
 138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 139
 140 static const char *hwsim_alpha2s[] = {
 141         "FI",
 142         "AL",
 143         "US",
 144         "DE",
 145         "JP",
 146         "AL",
 147 };
 148
 149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 150         .n_reg_rules = 4,
 151         .alpha2 =  "99",
 152         .reg_rules = {
 153                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 154                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 155                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 156                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 157         }
 158 };
 159
 160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 161         .n_reg_rules = 2,
 162         .alpha2 =  "99",
 163         .reg_rules = {
 164                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 165                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 166                          NL80211_RRF_NO_IR),
 167         }
 168 };
 169
 170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 171         &hwsim_world_regdom_custom_01,
 172         &hwsim_world_regdom_custom_02,
 173 };
 174
 175 struct hwsim_vif_priv {
 176         u32 magic;
 177         u8 bssid[ETH_ALEN];
 178         bool assoc;
 179         bool bcn_en;
 180         u16 aid;
 181 };
 182
 183 #define HWSIM_VIF_MAGIC 0x69537748
 184
 185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 186 {
 187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 188         WARN(vp->magic != HWSIM_VIF_MAGIC,
 189              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 190              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 191 }
 192
 193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 194 {
 195         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 196         vp->magic = HWSIM_VIF_MAGIC;
 197 }
 198
 199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = 0;
 203 }
 204
 205 struct hwsim_sta_priv {
 206         u32 magic;
 207 };
 208
 209 #define HWSIM_STA_MAGIC 0x6d537749
 210
 211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 212 {
 213         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 214         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 215 }
 216
 217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         sp->magic = HWSIM_STA_MAGIC;
 221 }
 222
 223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = 0;
 227 }
 228
 229 struct hwsim_chanctx_priv {
 230         u32 magic;
 231 };
 232
 233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 234
 235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 236 {
 237         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 238         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 239 }
 240
 241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         cp->magic = HWSIM_CHANCTX_MAGIC;
 245 }
 246
 247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = 0;
 251 }
 252
 253 static struct class *hwsim_class;
 254
 255 static struct net_device *hwsim_mon; /* global monitor netdev */
 256
 257 #define CHAN2G(_freq)  { \
 258         .band = IEEE80211_BAND_2GHZ, \
 259         .center_freq = (_freq), \
 260         .hw_value = (_freq), \
 261         .max_power = 20, \
 262 }
 263
 264 #define CHAN5G(_freq) { \
 265         .band = IEEE80211_BAND_5GHZ, \
 266         .center_freq = (_freq), \
 267         .hw_value = (_freq), \
 268         .max_power = 20, \
 269 }
 270
 271 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 272         CHAN2G(2412), /* Channel 1 */
 273         CHAN2G(2417), /* Channel 2 */
 274         CHAN2G(2422), /* Channel 3 */
 275         CHAN2G(2427), /* Channel 4 */
 276         CHAN2G(2432), /* Channel 5 */
 277         CHAN2G(2437), /* Channel 6 */
 278         CHAN2G(2442), /* Channel 7 */
 279         CHAN2G(2447), /* Channel 8 */
 280         CHAN2G(2452), /* Channel 9 */
 281         CHAN2G(2457), /* Channel 10 */
 282         CHAN2G(2462), /* Channel 11 */
 283         CHAN2G(2467), /* Channel 12 */
 284         CHAN2G(2472), /* Channel 13 */
 285         CHAN2G(2484), /* Channel 14 */
 286 };
 287
 288 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 289         CHAN5G(5180), /* Channel 36 */
 290         CHAN5G(5200), /* Channel 40 */
 291         CHAN5G(5220), /* Channel 44 */
 292         CHAN5G(5240), /* Channel 48 */
 293
 294         CHAN5G(5260), /* Channel 52 */
 295         CHAN5G(5280), /* Channel 56 */
 296         CHAN5G(5300), /* Channel 60 */
 297         CHAN5G(5320), /* Channel 64 */
 298
 299         CHAN5G(5500), /* Channel 100 */
 300         CHAN5G(5520), /* Channel 104 */
 301         CHAN5G(5540), /* Channel 108 */
 302         CHAN5G(5560), /* Channel 112 */
 303         CHAN5G(5580), /* Channel 116 */
 304         CHAN5G(5600), /* Channel 120 */
 305         CHAN5G(5620), /* Channel 124 */
 306         CHAN5G(5640), /* Channel 128 */
 307         CHAN5G(5660), /* Channel 132 */
 308         CHAN5G(5680), /* Channel 136 */
 309         CHAN5G(5700), /* Channel 140 */
 310
 311         CHAN5G(5745), /* Channel 149 */
 312         CHAN5G(5765), /* Channel 153 */
 313         CHAN5G(5785), /* Channel 157 */
 314         CHAN5G(5805), /* Channel 161 */
 315         CHAN5G(5825), /* Channel 165 */
 316 };
 317
 318 static const struct ieee80211_rate hwsim_rates[] = {
 319         { .bitrate = 10 },
 320         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 321         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 322         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 323         { .bitrate = 60 },
 324         { .bitrate = 90 },
 325         { .bitrate = 120 },
 326         { .bitrate = 180 },
 327         { .bitrate = 240 },
 328         { .bitrate = 360 },
 329         { .bitrate = 480 },
 330         { .bitrate = 540 }
 331 };
 332
 333 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 334         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 335         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 336                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 337 #ifdef CONFIG_MAC80211_MESH
 338                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 339 #endif
 340                                  BIT(NL80211_IFTYPE_AP) |
 341                                  BIT(NL80211_IFTYPE_P2P_GO) },
 342         /* must be last, see hwsim_if_comb */
 343         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 344 };
 345
 346 static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
 347         { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
 348 };
 349
 350 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 351         {
 352                 .limits = hwsim_if_limits,
 353                 /* remove the last entry which is P2P_DEVICE */
 354                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 355                 .max_interfaces = 2048,
 356                 .num_different_channels = 1,
 357         },
 358         {
 359                 .limits = hwsim_if_dfs_limits,
 360                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
 361                 .max_interfaces = 8,
 362                 .num_different_channels = 1,
 363                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 364                                        BIT(NL80211_CHAN_WIDTH_20) |
 365                                        BIT(NL80211_CHAN_WIDTH_40) |
 366                                        BIT(NL80211_CHAN_WIDTH_80) |
 367                                        BIT(NL80211_CHAN_WIDTH_160),
 368         }
 369 };
 370
 371 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 372         {
 373                 .limits = hwsim_if_limits,
 374                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 375                 .max_interfaces = 2048,
 376                 .num_different_channels = 1,
 377         },
 378         {
 379                 .limits = hwsim_if_dfs_limits,
 380                 .n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
 381                 .max_interfaces = 8,
 382                 .num_different_channels = 1,
 383                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 384                                        BIT(NL80211_CHAN_WIDTH_20) |
 385                                        BIT(NL80211_CHAN_WIDTH_40) |
 386                                        BIT(NL80211_CHAN_WIDTH_80) |
 387                                        BIT(NL80211_CHAN_WIDTH_160),
 388         }
 389 };
 390
 391 static spinlock_t hwsim_radio_lock;
 392 static struct list_head hwsim_radios;
 393 static int hwsim_radio_idx;
 394
 395 static struct platform_driver mac80211_hwsim_driver = {
 396         .driver = {
 397                 .name = "mac80211_hwsim",
 398         },
 399 };
 400
 401 struct mac80211_hwsim_data {
 402         struct list_head list;
 403         struct ieee80211_hw *hw;
 404         struct device *dev;
 405         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 406         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 407         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 408         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 409         struct ieee80211_iface_combination if_combination;
 410
 411         struct mac_address addresses[2];
 412         int channels, idx;
 413         bool use_chanctx;
 414         bool destroy_on_close;
 415         struct work_struct destroy_work;
 416         u32 portid;
 417         char alpha2[2];
 418         const struct ieee80211_regdomain *regd;
 419
 420         struct ieee80211_channel *tmp_chan;
 421         struct delayed_work roc_done;
 422         struct delayed_work hw_scan;
 423         struct cfg80211_scan_request *hw_scan_request;
 424         struct ieee80211_vif *hw_scan_vif;
 425         int scan_chan_idx;
 426         u8 scan_addr[ETH_ALEN];
 427
 428         struct ieee80211_channel *channel;
 429         u64 beacon_int  /* beacon interval in us */;
 430         unsigned int rx_filter;
 431         bool started, idle, scanning;
 432         struct mutex mutex;
 433         struct tasklet_hrtimer beacon_timer;
 434         enum ps_mode {
 435                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 436         } ps;
 437         bool ps_poll_pending;
 438         struct dentry *debugfs;
 439
 440         struct sk_buff_head pending;    /* packets pending */
 441         /*
 442          * Only radios in the same group can communicate together (the
 443          * channel has to match too). Each bit represents a group. A
 444          * radio can be in more than one group.
 445          */
 446         u64 group;
 447
 448         int power_level;
 449
 450         /* difference between this hw's clock and the real clock, in usecs */
 451         s64 tsf_offset;
 452         s64 bcn_delta;
 453         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 454         u64 abs_bcn_ts;
 455
 456         /* Stats */
 457         u64 tx_pkts;
 458         u64 rx_pkts;
 459         u64 tx_bytes;
 460         u64 rx_bytes;
 461         u64 tx_dropped;
 462         u64 tx_failed;
 463 };
 464
 465
 466 struct hwsim_radiotap_hdr {
 467         struct ieee80211_radiotap_header hdr;
 468         __le64 rt_tsft;
 469         u8 rt_flags;
 470         u8 rt_rate;
 471         __le16 rt_channel;
 472         __le16 rt_chbitmask;
 473 } __packed;
 474
 475 struct hwsim_radiotap_ack_hdr {
 476         struct ieee80211_radiotap_header hdr;
 477         u8 rt_flags;
 478         u8 pad;
 479         __le16 rt_channel;
 480         __le16 rt_chbitmask;
 481 } __packed;
 482
 483 /* MAC80211_HWSIM netlinf family */
 484 static struct genl_family hwsim_genl_family = {
 485         .id = GENL_ID_GENERATE,
 486         .hdrsize = 0,
 487         .name = "MAC80211_HWSIM",
 488         .version = 1,
 489         .maxattr = HWSIM_ATTR_MAX,
 490 };
 491
 492 enum hwsim_multicast_groups {
 493         HWSIM_MCGRP_CONFIG,
 494 };
 495
 496 static const struct genl_multicast_group hwsim_mcgrps[] = {
 497         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 498 };
 499
 500 /* MAC80211_HWSIM netlink policy */
 501
 502 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 503         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 504         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 505         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 506                                .len = IEEE80211_MAX_DATA_LEN },
 507         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 508         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 509         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 510         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 511                                  .len = IEEE80211_TX_MAX_RATES *
 512                                         sizeof(struct hwsim_tx_rate)},
 513         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 514         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 515         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 516         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 517         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 518         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 519         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 520         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 521         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 522         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 523         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 524 };
 525
 526 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 527                                     struct sk_buff *skb,
 528                                     struct ieee80211_channel *chan);
 529
 530 /* sysfs attributes */
 531 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 532 {
 533         struct mac80211_hwsim_data *data = dat;
 534         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 535         struct sk_buff *skb;
 536         struct ieee80211_pspoll *pspoll;
 537
 538         if (!vp->assoc)
 539                 return;
 540
 541         wiphy_debug(data->hw->wiphy,
 542                     "%s: send PS-Poll to %pM for aid %d\n",
 543                     __func__, vp->bssid, vp->aid);
 544
 545         skb = dev_alloc_skb(sizeof(*pspoll));
 546         if (!skb)
 547                 return;
 548         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 549         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 550                                             IEEE80211_STYPE_PSPOLL |
 551                                             IEEE80211_FCTL_PM);
 552         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 553         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 554         memcpy(pspoll->ta, mac, ETH_ALEN);
 555
 556         rcu_read_lock();
 557         mac80211_hwsim_tx_frame(data->hw, skb,
 558                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 559         rcu_read_unlock();
 560 }
 561
 562 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 563                                 struct ieee80211_vif *vif, int ps)
 564 {
 565         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 566         struct sk_buff *skb;
 567         struct ieee80211_hdr *hdr;
 568
 569         if (!vp->assoc)
 570                 return;
 571
 572         wiphy_debug(data->hw->wiphy,
 573                     "%s: send data::nullfunc to %pM ps=%d\n",
 574                     __func__, vp->bssid, ps);
 575
 576         skb = dev_alloc_skb(sizeof(*hdr));
 577         if (!skb)
 578                 return;
 579         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 580         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 581                                          IEEE80211_STYPE_NULLFUNC |
 582                                          (ps ? IEEE80211_FCTL_PM : 0));
 583         hdr->duration_id = cpu_to_le16(0);
 584         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 585         memcpy(hdr->addr2, mac, ETH_ALEN);
 586         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 587
 588         rcu_read_lock();
 589         mac80211_hwsim_tx_frame(data->hw, skb,
 590                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 591         rcu_read_unlock();
 592 }
 593
 594
 595 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 596                                    struct ieee80211_vif *vif)
 597 {
 598         struct mac80211_hwsim_data *data = dat;
 599         hwsim_send_nullfunc(data, mac, vif, 1);
 600 }
 601
 602 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 603                                       struct ieee80211_vif *vif)
 604 {
 605         struct mac80211_hwsim_data *data = dat;
 606         hwsim_send_nullfunc(data, mac, vif, 0);
 607 }
 608
 609 static int hwsim_fops_ps_read(void *dat, u64 *val)
 610 {
 611         struct mac80211_hwsim_data *data = dat;
 612         *val = data->ps;
 613         return 0;
 614 }
 615
 616 static int hwsim_fops_ps_write(void *dat, u64 val)
 617 {
 618         struct mac80211_hwsim_data *data = dat;
 619         enum ps_mode old_ps;
 620
 621         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 622             val != PS_MANUAL_POLL)
 623                 return -EINVAL;
 624
 625         old_ps = data->ps;
 626         data->ps = val;
 627
 628         local_bh_disable();
 629         if (val == PS_MANUAL_POLL) {
 630                 ieee80211_iterate_active_interfaces_atomic(
 631                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 632                         hwsim_send_ps_poll, data);
 633                 data->ps_poll_pending = true;
 634         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 635                 ieee80211_iterate_active_interfaces_atomic(
 636                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 637                         hwsim_send_nullfunc_ps, data);
 638         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 639                 ieee80211_iterate_active_interfaces_atomic(
 640                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 641                         hwsim_send_nullfunc_no_ps, data);
 642         }
 643         local_bh_enable();
 644
 645         return 0;
 646 }
 647
 648 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 649                         "%llu\n");
 650
 651 static int hwsim_write_simulate_radar(void *dat, u64 val)
 652 {
 653         struct mac80211_hwsim_data *data = dat;
 654
 655         ieee80211_radar_detected(data->hw);
 656
 657         return 0;
 658 }
 659
 660 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 661                         hwsim_write_simulate_radar, "%llu\n");
 662
 663 static int hwsim_fops_group_read(void *dat, u64 *val)
 664 {
 665         struct mac80211_hwsim_data *data = dat;
 666         *val = data->group;
 667         return 0;
 668 }
 669
 670 static int hwsim_fops_group_write(void *dat, u64 val)
 671 {
 672         struct mac80211_hwsim_data *data = dat;
 673         data->group = val;
 674         return 0;
 675 }
 676
 677 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 678                         hwsim_fops_group_read, hwsim_fops_group_write,
 679                         "%llx\n");
 680
 681 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 682                                         struct net_device *dev)
 683 {
 684         /* TODO: allow packet injection */
 685         dev_kfree_skb(skb);
 686         return NETDEV_TX_OK;
 687 }
 688
 689 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 690 {
 691         return ktime_to_us(ktime_get_real());
 692 }
 693
 694 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 695 {
 696         u64 now = mac80211_hwsim_get_tsf_raw();
 697         return cpu_to_le64(now + data->tsf_offset);
 698 }
 699
 700 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 701                                   struct ieee80211_vif *vif)
 702 {
 703         struct mac80211_hwsim_data *data = hw->priv;
 704         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 705 }
 706
 707 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 708                 struct ieee80211_vif *vif, u64 tsf)
 709 {
 710         struct mac80211_hwsim_data *data = hw->priv;
 711         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 712         u32 bcn_int = data->beacon_int;
 713         u64 delta = abs64(tsf - now);
 714
 715         /* adjust after beaconing with new timestamp at old TBTT */
 716         if (tsf > now) {
 717                 data->tsf_offset += delta;
 718                 data->bcn_delta = do_div(delta, bcn_int);
 719         } else {
 720                 data->tsf_offset -= delta;
 721                 data->bcn_delta = -do_div(delta, bcn_int);
 722         }
 723 }
 724
 725 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 726                                       struct sk_buff *tx_skb,
 727                                       struct ieee80211_channel *chan)
 728 {
 729         struct mac80211_hwsim_data *data = hw->priv;
 730         struct sk_buff *skb;
 731         struct hwsim_radiotap_hdr *hdr;
 732         u16 flags;
 733         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 734         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 735
 736         if (!netif_running(hwsim_mon))
 737                 return;
 738
 739         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 740         if (skb == NULL)
 741                 return;
 742
 743         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 744         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 745         hdr->hdr.it_pad = 0;
 746         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 747         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 748                                           (1 << IEEE80211_RADIOTAP_RATE) |
 749                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 750                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 751         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 752         hdr->rt_flags = 0;
 753         hdr->rt_rate = txrate->bitrate / 5;
 754         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 755         flags = IEEE80211_CHAN_2GHZ;
 756         if (txrate->flags & IEEE80211_RATE_ERP_G)
 757                 flags |= IEEE80211_CHAN_OFDM;
 758         else
 759                 flags |= IEEE80211_CHAN_CCK;
 760         hdr->rt_chbitmask = cpu_to_le16(flags);
 761
 762         skb->dev = hwsim_mon;
 763         skb_set_mac_header(skb, 0);
 764         skb->ip_summed = CHECKSUM_UNNECESSARY;
 765         skb->pkt_type = PACKET_OTHERHOST;
 766         skb->protocol = htons(ETH_P_802_2);
 767         memset(skb->cb, 0, sizeof(skb->cb));
 768         netif_rx(skb);
 769 }
 770
 771
 772 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 773                                        const u8 *addr)
 774 {
 775         struct sk_buff *skb;
 776         struct hwsim_radiotap_ack_hdr *hdr;
 777         u16 flags;
 778         struct ieee80211_hdr *hdr11;
 779
 780         if (!netif_running(hwsim_mon))
 781                 return;
 782
 783         skb = dev_alloc_skb(100);
 784         if (skb == NULL)
 785                 return;
 786
 787         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 788         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 789         hdr->hdr.it_pad = 0;
 790         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 791         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 792                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 793         hdr->rt_flags = 0;
 794         hdr->pad = 0;
 795         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 796         flags = IEEE80211_CHAN_2GHZ;
 797         hdr->rt_chbitmask = cpu_to_le16(flags);
 798
 799         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 800         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 801                                            IEEE80211_STYPE_ACK);
 802         hdr11->duration_id = cpu_to_le16(0);
 803         memcpy(hdr11->addr1, addr, ETH_ALEN);
 804
 805         skb->dev = hwsim_mon;
 806         skb_set_mac_header(skb, 0);
 807         skb->ip_summed = CHECKSUM_UNNECESSARY;
 808         skb->pkt_type = PACKET_OTHERHOST;
 809         skb->protocol = htons(ETH_P_802_2);
 810         memset(skb->cb, 0, sizeof(skb->cb));
 811         netif_rx(skb);
 812 }
 813
 814 struct mac80211_hwsim_addr_match_data {
 815         u8 addr[ETH_ALEN];
 816         bool ret;
 817 };
 818
 819 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 820                                      struct ieee80211_vif *vif)
 821 {
 822         struct mac80211_hwsim_addr_match_data *md = data;
 823
 824         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 825                 md->ret = true;
 826 }
 827
 828 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 829                                       const u8 *addr)
 830 {
 831         struct mac80211_hwsim_addr_match_data md = {
 832                 .ret = false,
 833         };
 834
 835         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 836                 return true;
 837
 838         memcpy(md.addr, addr, ETH_ALEN);
 839
 840         ieee80211_iterate_active_interfaces_atomic(data->hw,
 841                                                    IEEE80211_IFACE_ITER_NORMAL,
 842                                                    mac80211_hwsim_addr_iter,
 843                                                    &md);
 844
 845         return md.ret;
 846 }
 847
 848 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 849                            struct sk_buff *skb)
 850 {
 851         switch (data->ps) {
 852         case PS_DISABLED:
 853                 return true;
 854         case PS_ENABLED:
 855                 return false;
 856         case PS_AUTO_POLL:
 857                 /* TODO: accept (some) Beacons by default and other frames only
 858                  * if pending PS-Poll has been sent */
 859                 return true;
 860         case PS_MANUAL_POLL:
 861                 /* Allow unicast frames to own address if there is a pending
 862                  * PS-Poll */
 863                 if (data->ps_poll_pending &&
 864                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 865                         data->ps_poll_pending = false;
 866                         return true;
 867                 }
 868                 return false;
 869         }
 870
 871         return true;
 872 }
 873
 874 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 875                                        struct sk_buff *my_skb,
 876                                        int dst_portid)
 877 {
 878         struct sk_buff *skb;
 879         struct mac80211_hwsim_data *data = hw->priv;
 880         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 881         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 882         void *msg_head;
 883         unsigned int hwsim_flags = 0;
 884         int i;
 885         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 886
 887         if (data->ps != PS_DISABLED)
 888                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 889         /* If the queue contains MAX_QUEUE skb's drop some */
 890         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 891                 /* Droping until WARN_QUEUE level */
 892                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
 893                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
 894                         data->tx_dropped++;
 895                 }
 896         }
 897
 898         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 899         if (skb == NULL)
 900                 goto nla_put_failure;
 901
 902         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 903                                HWSIM_CMD_FRAME);
 904         if (msg_head == NULL) {
 905                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 906                 goto nla_put_failure;
 907         }
 908
 909         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 910                     ETH_ALEN, data->addresses[1].addr))
 911                 goto nla_put_failure;
 912
 913         /* We get the skb->data */
 914         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 915                 goto nla_put_failure;
 916
 917         /* We get the flags for this transmission, and we translate them to
 918            wmediumd flags  */
 919
 920         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 921                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 922
 923         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 924                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 925
 926         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 927                 goto nla_put_failure;
 928
 929         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
 930                 goto nla_put_failure;
 931
 932         /* We get the tx control (rate and retries) info*/
 933
 934         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 935                 tx_attempts[i].idx = info->status.rates[i].idx;
 936                 tx_attempts[i].count = info->status.rates[i].count;
 937         }
 938
 939         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 940                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 941                     tx_attempts))
 942                 goto nla_put_failure;
 943
 944         /* We create a cookie to identify this skb */
 945         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 946                 goto nla_put_failure;
 947
 948         genlmsg_end(skb, msg_head);
 949         if (genlmsg_unicast(&init_net, skb, dst_portid))
 950                 goto err_free_txskb;
 951
 952         /* Enqueue the packet */
 953         skb_queue_tail(&data->pending, my_skb);
 954         data->tx_pkts++;
 955         data->tx_bytes += my_skb->len;
 956         return;
 957
 958 nla_put_failure:
 959         nlmsg_free(skb);
 960 err_free_txskb:
 961         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 962         ieee80211_free_txskb(hw, my_skb);
 963         data->tx_failed++;
 964 }
 965
 966 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 967                                struct ieee80211_channel *c2)
 968 {
 969         if (!c1 || !c2)
 970                 return false;
 971
 972         return c1->center_freq == c2->center_freq;
 973 }
 974
 975 struct tx_iter_data {
 976         struct ieee80211_channel *channel;
 977         bool receive;
 978 };
 979
 980 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 981                                    struct ieee80211_vif *vif)
 982 {
 983         struct tx_iter_data *data = _data;
 984
 985         if (!vif->chanctx_conf)
 986                 return;
 987
 988         if (!hwsim_chans_compat(data->channel,
 989                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 990                 return;
 991
 992         data->receive = true;
 993 }
 994
 995 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
 996 {
 997         /*
 998          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
 999          * e.g. like this:
1000          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1001          * (but you should use a valid OUI, not that)
1002          *
1003          * If anyone wants to 'donate' a radiotap OUI/subns code
1004          * please send a patch removing this #ifdef and changing
1005          * the values accordingly.
1006          */
1007 #ifdef HWSIM_RADIOTAP_OUI
1008         struct ieee80211_vendor_radiotap *rtap;
1009
1010         /*
1011          * Note that this code requires the headroom in the SKB
1012          * that was allocated earlier.
1013          */
1014         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1015         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1016         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1017         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1018         rtap->subns = 127;
1019
1020         /*
1021          * Radiotap vendor namespaces can (and should) also be
1022          * split into fields by using the standard radiotap
1023          * presence bitmap mechanism. Use just BIT(0) here for
1024          * the presence bitmap.
1025          */
1026         rtap->present = BIT(0);
1027         /* We have 8 bytes of (dummy) data */
1028         rtap->len = 8;
1029         /* For testing, also require it to be aligned */
1030         rtap->align = 8;
1031         /* And also test that padding works, 4 bytes */
1032         rtap->pad = 4;
1033         /* push the data */
1034         memcpy(rtap->data, "ABCDEFGH", 8);
1035         /* make sure to clear padding, mac80211 doesn't */
1036         memset(rtap->data + 8, 0, 4);
1037
1038         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1039 #endif
1040 }
1041
1042 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1043                                           struct sk_buff *skb,
1044                                           struct ieee80211_channel *chan)
1045 {
1046         struct mac80211_hwsim_data *data = hw->priv, *data2;
1047         bool ack = false;
1048         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1049         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1050         struct ieee80211_rx_status rx_status;
1051         u64 now;
1052
1053         memset(&rx_status, 0, sizeof(rx_status));
1054         rx_status.flag |= RX_FLAG_MACTIME_START;
1055         rx_status.freq = chan->center_freq;
1056         rx_status.band = chan->band;
1057         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1058                 rx_status.rate_idx =
1059                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1060                 rx_status.vht_nss =
1061                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1062                 rx_status.flag |= RX_FLAG_VHT;
1063         } else {
1064                 rx_status.rate_idx = info->control.rates[0].idx;
1065                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1066                         rx_status.flag |= RX_FLAG_HT;
1067         }
1068         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1069                 rx_status.flag |= RX_FLAG_40MHZ;
1070         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1071                 rx_status.flag |= RX_FLAG_SHORT_GI;
1072         /* TODO: simulate real signal strength (and optional packet loss) */
1073         rx_status.signal = data->power_level - 50;
1074
1075         if (data->ps != PS_DISABLED)
1076                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1077
1078         /* release the skb's source info */
1079         skb_orphan(skb);
1080         skb_dst_drop(skb);
1081         skb->mark = 0;
1082         secpath_reset(skb);
1083         nf_reset(skb);
1084
1085         /*
1086          * Get absolute mactime here so all HWs RX at the "same time", and
1087          * absolute TX time for beacon mactime so the timestamp matches.
1088          * Giving beacons a different mactime than non-beacons looks messy, but
1089          * it helps the Toffset be exact and a ~10us mactime discrepancy
1090          * probably doesn't really matter.
1091          */
1092         if (ieee80211_is_beacon(hdr->frame_control) ||
1093             ieee80211_is_probe_resp(hdr->frame_control))
1094                 now = data->abs_bcn_ts;
1095         else
1096                 now = mac80211_hwsim_get_tsf_raw();
1097
1098         /* Copy skb to all enabled radios that are on the current frequency */
1099         spin_lock(&hwsim_radio_lock);
1100         list_for_each_entry(data2, &hwsim_radios, list) {
1101                 struct sk_buff *nskb;
1102                 struct tx_iter_data tx_iter_data = {
1103                         .receive = false,
1104                         .channel = chan,
1105                 };
1106
1107                 if (data == data2)
1108                         continue;
1109
1110                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1111                     !hwsim_ps_rx_ok(data2, skb))
1112                         continue;
1113
1114                 if (!(data->group & data2->group))
1115                         continue;
1116
1117                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1118                     !hwsim_chans_compat(chan, data2->channel)) {
1119                         ieee80211_iterate_active_interfaces_atomic(
1120                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1121                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1122                         if (!tx_iter_data.receive)
1123                                 continue;
1124                 }
1125
1126                 /*
1127                  * reserve some space for our vendor and the normal
1128                  * radiotap header, since we're copying anyway
1129                  */
1130                 if (skb->len < PAGE_SIZE && paged_rx) {
1131                         struct page *page = alloc_page(GFP_ATOMIC);
1132
1133                         if (!page)
1134                                 continue;
1135
1136                         nskb = dev_alloc_skb(128);
1137                         if (!nskb) {
1138                                 __free_page(page);
1139                                 continue;
1140                         }
1141
1142                         memcpy(page_address(page), skb->data, skb->len);
1143                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1144                 } else {
1145                         nskb = skb_copy(skb, GFP_ATOMIC);
1146                         if (!nskb)
1147                                 continue;
1148                 }
1149
1150                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1151                         ack = true;
1152
1153                 rx_status.mactime = now + data2->tsf_offset;
1154
1155                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1156
1157                 mac80211_hwsim_add_vendor_rtap(nskb);
1158
1159                 data2->rx_pkts++;
1160                 data2->rx_bytes += nskb->len;
1161                 ieee80211_rx_irqsafe(data2->hw, nskb);
1162         }
1163         spin_unlock(&hwsim_radio_lock);
1164
1165         return ack;
1166 }
1167
1168 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1169                               struct ieee80211_tx_control *control,
1170                               struct sk_buff *skb)
1171 {
1172         struct mac80211_hwsim_data *data = hw->priv;
1173         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1174         struct ieee80211_chanctx_conf *chanctx_conf;
1175         struct ieee80211_channel *channel;
1176         bool ack;
1177         u32 _portid;
1178
1179         if (WARN_ON(skb->len < 10)) {
1180                 /* Should not happen; just a sanity check for addr1 use */
1181                 ieee80211_free_txskb(hw, skb);
1182                 return;
1183         }
1184
1185         if (!data->use_chanctx) {
1186                 channel = data->channel;
1187         } else if (txi->hw_queue == 4) {
1188                 channel = data->tmp_chan;
1189         } else {
1190                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1191                 if (chanctx_conf)
1192                         channel = chanctx_conf->def.chan;
1193                 else
1194                         channel = NULL;
1195         }
1196
1197         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1198                 ieee80211_free_txskb(hw, skb);
1199                 return;
1200         }
1201
1202         if (data->idle && !data->tmp_chan) {
1203                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1204                 ieee80211_free_txskb(hw, skb);
1205                 return;
1206         }
1207
1208         if (txi->control.vif)
1209                 hwsim_check_magic(txi->control.vif);
1210         if (control->sta)
1211                 hwsim_check_sta_magic(control->sta);
1212
1213         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1214                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1215                                        txi->control.rates,
1216                                        ARRAY_SIZE(txi->control.rates));
1217
1218         txi->rate_driver_data[0] = channel;
1219         mac80211_hwsim_monitor_rx(hw, skb, channel);
1220
1221         /* wmediumd mode check */
1222         _portid = ACCESS_ONCE(wmediumd_portid);
1223
1224         if (_portid)
1225                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1226
1227         /* NO wmediumd detected, perfect medium simulation */
1228         data->tx_pkts++;
1229         data->tx_bytes += skb->len;
1230         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1231
1232         if (ack && skb->len >= 16) {
1233                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1234                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1235         }
1236
1237         ieee80211_tx_info_clear_status(txi);
1238
1239         /* frame was transmitted at most favorable rate at first attempt */
1240         txi->control.rates[0].count = 1;
1241         txi->control.rates[1].idx = -1;
1242
1243         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1244                 txi->flags |= IEEE80211_TX_STAT_ACK;
1245         ieee80211_tx_status_irqsafe(hw, skb);
1246 }
1247
1248
1249 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1250 {
1251         struct mac80211_hwsim_data *data = hw->priv;
1252         wiphy_debug(hw->wiphy, "%s\n", __func__);
1253         data->started = true;
1254         return 0;
1255 }
1256
1257
1258 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1259 {
1260         struct mac80211_hwsim_data *data = hw->priv;
1261         data->started = false;
1262         tasklet_hrtimer_cancel(&data->beacon_timer);
1263         wiphy_debug(hw->wiphy, "%s\n", __func__);
1264 }
1265
1266
1267 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1268                                         struct ieee80211_vif *vif)
1269 {
1270         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1271                     __func__, ieee80211_vif_type_p2p(vif),
1272                     vif->addr);
1273         hwsim_set_magic(vif);
1274
1275         vif->cab_queue = 0;
1276         vif->hw_queue[IEEE80211_AC_VO] = 0;
1277         vif->hw_queue[IEEE80211_AC_VI] = 1;
1278         vif->hw_queue[IEEE80211_AC_BE] = 2;
1279         vif->hw_queue[IEEE80211_AC_BK] = 3;
1280
1281         return 0;
1282 }
1283
1284
1285 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1286                                            struct ieee80211_vif *vif,
1287                                            enum nl80211_iftype newtype,
1288                                            bool newp2p)
1289 {
1290         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1291         wiphy_debug(hw->wiphy,
1292                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1293                     __func__, ieee80211_vif_type_p2p(vif),
1294                     newtype, vif->addr);
1295         hwsim_check_magic(vif);
1296
1297         /*
1298          * interface may change from non-AP to AP in
1299          * which case this needs to be set up again
1300          */
1301         vif->cab_queue = 0;
1302
1303         return 0;
1304 }
1305
1306 static void mac80211_hwsim_remove_interface(
1307         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1308 {
1309         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1310                     __func__, ieee80211_vif_type_p2p(vif),
1311                     vif->addr);
1312         hwsim_check_magic(vif);
1313         hwsim_clear_magic(vif);
1314 }
1315
1316 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1317                                     struct sk_buff *skb,
1318                                     struct ieee80211_channel *chan)
1319 {
1320         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1321
1322         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1323                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1324                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1325                                        txi->control.rates,
1326                                        ARRAY_SIZE(txi->control.rates));
1327         }
1328
1329         mac80211_hwsim_monitor_rx(hw, skb, chan);
1330
1331         if (_pid)
1332                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1333
1334         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1335         dev_kfree_skb(skb);
1336 }
1337
1338 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1339                                      struct ieee80211_vif *vif)
1340 {
1341         struct mac80211_hwsim_data *data = arg;
1342         struct ieee80211_hw *hw = data->hw;
1343         struct ieee80211_tx_info *info;
1344         struct ieee80211_rate *txrate;
1345         struct ieee80211_mgmt *mgmt;
1346         struct sk_buff *skb;
1347
1348         hwsim_check_magic(vif);
1349
1350         if (vif->type != NL80211_IFTYPE_AP &&
1351             vif->type != NL80211_IFTYPE_MESH_POINT &&
1352             vif->type != NL80211_IFTYPE_ADHOC)
1353                 return;
1354
1355         skb = ieee80211_beacon_get(hw, vif);
1356         if (skb == NULL)
1357                 return;
1358         info = IEEE80211_SKB_CB(skb);
1359         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1360                 ieee80211_get_tx_rates(vif, NULL, skb,
1361                                        info->control.rates,
1362                                        ARRAY_SIZE(info->control.rates));
1363
1364         txrate = ieee80211_get_tx_rate(hw, info);
1365
1366         mgmt = (struct ieee80211_mgmt *) skb->data;
1367         /* fake header transmission time */
1368         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1369         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1370                                                data->tsf_offset +
1371                                                24 * 8 * 10 / txrate->bitrate);
1372
1373         mac80211_hwsim_tx_frame(hw, skb,
1374                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1375
1376         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1377                 ieee80211_csa_finish(vif);
1378 }
1379
1380 static enum hrtimer_restart
1381 mac80211_hwsim_beacon(struct hrtimer *timer)
1382 {
1383         struct mac80211_hwsim_data *data =
1384                 container_of(timer, struct mac80211_hwsim_data,
1385                              beacon_timer.timer);
1386         struct ieee80211_hw *hw = data->hw;
1387         u64 bcn_int = data->beacon_int;
1388         ktime_t next_bcn;
1389
1390         if (!data->started)
1391                 goto out;
1392
1393         ieee80211_iterate_active_interfaces_atomic(
1394                 hw, IEEE80211_IFACE_ITER_NORMAL,
1395                 mac80211_hwsim_beacon_tx, data);
1396
1397         /* beacon at new TBTT + beacon interval */
1398         if (data->bcn_delta) {
1399                 bcn_int -= data->bcn_delta;
1400                 data->bcn_delta = 0;
1401         }
1402
1403         next_bcn = ktime_add(hrtimer_get_expires(timer),
1404                              ns_to_ktime(bcn_int * 1000));
1405         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1406 out:
1407         return HRTIMER_NORESTART;
1408 }
1409
1410 static const char * const hwsim_chanwidths[] = {
1411         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1412         [NL80211_CHAN_WIDTH_20] = "ht20",
1413         [NL80211_CHAN_WIDTH_40] = "ht40",
1414         [NL80211_CHAN_WIDTH_80] = "vht80",
1415         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1416         [NL80211_CHAN_WIDTH_160] = "vht160",
1417 };
1418
1419 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1420 {
1421         struct mac80211_hwsim_data *data = hw->priv;
1422         struct ieee80211_conf *conf = &hw->conf;
1423         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1424                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1425                 [IEEE80211_SMPS_OFF] = "off",
1426                 [IEEE80211_SMPS_STATIC] = "static",
1427                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1428         };
1429
1430         if (conf->chandef.chan)
1431                 wiphy_debug(hw->wiphy,
1432                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1433                             __func__,
1434                             conf->chandef.chan->center_freq,
1435                             conf->chandef.center_freq1,
1436                             conf->chandef.center_freq2,
1437                             hwsim_chanwidths[conf->chandef.width],
1438                             !!(conf->flags & IEEE80211_CONF_IDLE),
1439                             !!(conf->flags & IEEE80211_CONF_PS),
1440                             smps_modes[conf->smps_mode]);
1441         else
1442                 wiphy_debug(hw->wiphy,
1443                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1444                             __func__,
1445                             !!(conf->flags & IEEE80211_CONF_IDLE),
1446                             !!(conf->flags & IEEE80211_CONF_PS),
1447                             smps_modes[conf->smps_mode]);
1448
1449         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1450
1451         data->channel = conf->chandef.chan;
1452
1453         WARN_ON(data->channel && data->use_chanctx);
1454
1455         data->power_level = conf->power_level;
1456         if (!data->started || !data->beacon_int)
1457                 tasklet_hrtimer_cancel(&data->beacon_timer);
1458         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1459                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1460                 u32 bcn_int = data->beacon_int;
1461                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1462
1463                 tasklet_hrtimer_start(&data->beacon_timer,
1464                                       ns_to_ktime(until_tbtt * 1000),
1465                                       HRTIMER_MODE_REL);
1466         }
1467
1468         return 0;
1469 }
1470
1471
1472 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1473                                             unsigned int changed_flags,
1474                                             unsigned int *total_flags,u64 multicast)
1475 {
1476         struct mac80211_hwsim_data *data = hw->priv;
1477
1478         wiphy_debug(hw->wiphy, "%s\n", __func__);
1479
1480         data->rx_filter = 0;
1481         if (*total_flags & FIF_PROMISC_IN_BSS)
1482                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1483         if (*total_flags & FIF_ALLMULTI)
1484                 data->rx_filter |= FIF_ALLMULTI;
1485
1486         *total_flags = data->rx_filter;
1487 }
1488
1489 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1490                                        struct ieee80211_vif *vif)
1491 {
1492         unsigned int *count = data;
1493         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1494
1495         if (vp->bcn_en)
1496                 (*count)++;
1497 }
1498
1499 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1500                                             struct ieee80211_vif *vif,
1501                                             struct ieee80211_bss_conf *info,
1502                                             u32 changed)
1503 {
1504         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1505         struct mac80211_hwsim_data *data = hw->priv;
1506
1507         hwsim_check_magic(vif);
1508
1509         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1510                     __func__, changed, vif->addr);
1511
1512         if (changed & BSS_CHANGED_BSSID) {
1513                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1514                             __func__, info->bssid);
1515                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1516         }
1517
1518         if (changed & BSS_CHANGED_ASSOC) {
1519                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1520                             info->assoc, info->aid);
1521                 vp->assoc = info->assoc;
1522                 vp->aid = info->aid;
1523         }
1524
1525         if (changed & BSS_CHANGED_BEACON_INT) {
1526                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1527                 data->beacon_int = info->beacon_int * 1024;
1528         }
1529
1530         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1531                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1532                 vp->bcn_en = info->enable_beacon;
1533                 if (data->started &&
1534                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1535                     info->enable_beacon) {
1536                         u64 tsf, until_tbtt;
1537                         u32 bcn_int;
1538                         if (WARN_ON(!data->beacon_int))
1539                                 data->beacon_int = 1000 * 1024;
1540                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1541                         bcn_int = data->beacon_int;
1542                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1543                         tasklet_hrtimer_start(&data->beacon_timer,
1544                                               ns_to_ktime(until_tbtt * 1000),
1545                                               HRTIMER_MODE_REL);
1546                 } else if (!info->enable_beacon) {
1547                         unsigned int count = 0;
1548                         ieee80211_iterate_active_interfaces_atomic(
1549                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1550                                 mac80211_hwsim_bcn_en_iter, &count);
1551                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1552                                     count);
1553                         if (count == 0)
1554                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1555                 }
1556         }
1557
1558         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1559                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1560                             info->use_cts_prot);
1561         }
1562
1563         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1564                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1565                             info->use_short_preamble);
1566         }
1567
1568         if (changed & BSS_CHANGED_ERP_SLOT) {
1569                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1570         }
1571
1572         if (changed & BSS_CHANGED_HT) {
1573                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1574                             info->ht_operation_mode);
1575         }
1576
1577         if (changed & BSS_CHANGED_BASIC_RATES) {
1578                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1579                             (unsigned long long) info->basic_rates);
1580         }
1581
1582         if (changed & BSS_CHANGED_TXPOWER)
1583                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1584 }
1585
1586 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1587                                   struct ieee80211_vif *vif,
1588                                   struct ieee80211_sta *sta)
1589 {
1590         hwsim_check_magic(vif);
1591         hwsim_set_sta_magic(sta);
1592
1593         return 0;
1594 }
1595
1596 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1597                                      struct ieee80211_vif *vif,
1598                                      struct ieee80211_sta *sta)
1599 {
1600         hwsim_check_magic(vif);
1601         hwsim_clear_sta_magic(sta);
1602
1603         return 0;
1604 }
1605
1606 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1607                                       struct ieee80211_vif *vif,
1608                                       enum sta_notify_cmd cmd,
1609                                       struct ieee80211_sta *sta)
1610 {
1611         hwsim_check_magic(vif);
1612
1613         switch (cmd) {
1614         case STA_NOTIFY_SLEEP:
1615         case STA_NOTIFY_AWAKE:
1616                 /* TODO: make good use of these flags */
1617                 break;
1618         default:
1619                 WARN(1, "Invalid sta notify: %d\n", cmd);
1620                 break;
1621         }
1622 }
1623
1624 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1625                                   struct ieee80211_sta *sta,
1626                                   bool set)
1627 {
1628         hwsim_check_sta_magic(sta);
1629         return 0;
1630 }
1631
1632 static int mac80211_hwsim_conf_tx(
1633         struct ieee80211_hw *hw,
1634         struct ieee80211_vif *vif, u16 queue,
1635         const struct ieee80211_tx_queue_params *params)
1636 {
1637         wiphy_debug(hw->wiphy,
1638                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1639                     __func__, queue,
1640                     params->txop, params->cw_min,
1641                     params->cw_max, params->aifs);
1642         return 0;
1643 }
1644
1645 static int mac80211_hwsim_get_survey(
1646         struct ieee80211_hw *hw, int idx,
1647         struct survey_info *survey)
1648 {
1649         struct ieee80211_conf *conf = &hw->conf;
1650
1651         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1652
1653         if (idx != 0)
1654                 return -ENOENT;
1655
1656         /* Current channel */
1657         survey->channel = conf->chandef.chan;
1658
1659         /*
1660          * Magically conjured noise level --- this is only ok for simulated hardware.
1661          *
1662          * A real driver which cannot determine the real channel noise MUST NOT
1663          * report any noise, especially not a magically conjured one :-)
1664          */
1665         survey->filled = SURVEY_INFO_NOISE_DBM;
1666         survey->noise = -92;
1667
1668         return 0;
1669 }
1670
1671 #ifdef CONFIG_NL80211_TESTMODE
1672 /*
1673  * This section contains example code for using netlink
1674  * attributes with the testmode command in nl80211.
1675  */
1676
1677 /* These enums need to be kept in sync with userspace */
1678 enum hwsim_testmode_attr {
1679         __HWSIM_TM_ATTR_INVALID = 0,
1680         HWSIM_TM_ATTR_CMD       = 1,
1681         HWSIM_TM_ATTR_PS        = 2,
1682
1683         /* keep last */
1684         __HWSIM_TM_ATTR_AFTER_LAST,
1685         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1686 };
1687
1688 enum hwsim_testmode_cmd {
1689         HWSIM_TM_CMD_SET_PS             = 0,
1690         HWSIM_TM_CMD_GET_PS             = 1,
1691         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1692         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1693 };
1694
1695 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1696         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1697         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1698 };
1699
1700 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1701                                        struct ieee80211_vif *vif,
1702                                        void *data, int len)
1703 {
1704         struct mac80211_hwsim_data *hwsim = hw->priv;
1705         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1706         struct sk_buff *skb;
1707         int err, ps;
1708
1709         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1710                         hwsim_testmode_policy);
1711         if (err)
1712                 return err;
1713
1714         if (!tb[HWSIM_TM_ATTR_CMD])
1715                 return -EINVAL;
1716
1717         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1718         case HWSIM_TM_CMD_SET_PS:
1719                 if (!tb[HWSIM_TM_ATTR_PS])
1720                         return -EINVAL;
1721                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1722                 return hwsim_fops_ps_write(hwsim, ps);
1723         case HWSIM_TM_CMD_GET_PS:
1724                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1725                                                 nla_total_size(sizeof(u32)));
1726                 if (!skb)
1727                         return -ENOMEM;
1728                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1729                         goto nla_put_failure;
1730                 return cfg80211_testmode_reply(skb);
1731         case HWSIM_TM_CMD_STOP_QUEUES:
1732                 ieee80211_stop_queues(hw);
1733                 return 0;
1734         case HWSIM_TM_CMD_WAKE_QUEUES:
1735                 ieee80211_wake_queues(hw);
1736                 return 0;
1737         default:
1738                 return -EOPNOTSUPP;
1739         }
1740
1741  nla_put_failure:
1742         kfree_skb(skb);
1743         return -ENOBUFS;
1744 }
1745 #endif
1746
1747 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1748                                        struct ieee80211_vif *vif,
1749                                        enum ieee80211_ampdu_mlme_action action,
1750                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1751                                        u8 buf_size)
1752 {
1753         switch (action) {
1754         case IEEE80211_AMPDU_TX_START:
1755                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1756                 break;
1757         case IEEE80211_AMPDU_TX_STOP_CONT:
1758         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1759         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1760                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1761                 break;
1762         case IEEE80211_AMPDU_TX_OPERATIONAL:
1763                 break;
1764         case IEEE80211_AMPDU_RX_START:
1765         case IEEE80211_AMPDU_RX_STOP:
1766                 break;
1767         default:
1768                 return -EOPNOTSUPP;
1769         }
1770
1771         return 0;
1772 }
1773
1774 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1775                                  struct ieee80211_vif *vif,
1776                                  u32 queues, bool drop)
1777 {
1778         /* Not implemented, queues only on kernel side */
1779 }
1780
1781 static void hw_scan_work(struct work_struct *work)
1782 {
1783         struct mac80211_hwsim_data *hwsim =
1784                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1785         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1786         int dwell, i;
1787
1788         mutex_lock(&hwsim->mutex);
1789         if (hwsim->scan_chan_idx >= req->n_channels) {
1790                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1791                 ieee80211_scan_completed(hwsim->hw, false);
1792                 hwsim->hw_scan_request = NULL;
1793                 hwsim->hw_scan_vif = NULL;
1794                 hwsim->tmp_chan = NULL;
1795                 mutex_unlock(&hwsim->mutex);
1796                 return;
1797         }
1798
1799         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1800                     req->channels[hwsim->scan_chan_idx]->center_freq);
1801
1802         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1803         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1804             !req->n_ssids) {
1805                 dwell = 120;
1806         } else {
1807                 dwell = 30;
1808                 /* send probes */
1809                 for (i = 0; i < req->n_ssids; i++) {
1810                         struct sk_buff *probe;
1811
1812                         probe = ieee80211_probereq_get(hwsim->hw,
1813                                                        hwsim->scan_addr,
1814                                                        req->ssids[i].ssid,
1815                                                        req->ssids[i].ssid_len,
1816                                                        req->ie_len);
1817                         if (!probe)
1818                                 continue;
1819
1820                         if (req->ie_len)
1821                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1822                                        req->ie_len);
1823
1824                         local_bh_disable();
1825                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1826                                                 hwsim->tmp_chan);
1827                         local_bh_enable();
1828                 }
1829         }
1830         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1831                                      msecs_to_jiffies(dwell));
1832         hwsim->scan_chan_idx++;
1833         mutex_unlock(&hwsim->mutex);
1834 }
1835
1836 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1837                                   struct ieee80211_vif *vif,
1838                                   struct ieee80211_scan_request *hw_req)
1839 {
1840         struct mac80211_hwsim_data *hwsim = hw->priv;
1841         struct cfg80211_scan_request *req = &hw_req->req;
1842
1843         mutex_lock(&hwsim->mutex);
1844         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1845                 mutex_unlock(&hwsim->mutex);
1846                 return -EBUSY;
1847         }
1848         hwsim->hw_scan_request = req;
1849         hwsim->hw_scan_vif = vif;
1850         hwsim->scan_chan_idx = 0;
1851         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1852                 get_random_mask_addr(hwsim->scan_addr,
1853                                      hw_req->req.mac_addr,
1854                                      hw_req->req.mac_addr_mask);
1855         else
1856                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1857         mutex_unlock(&hwsim->mutex);
1858
1859         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1860
1861         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1862
1863         return 0;
1864 }
1865
1866 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1867                                           struct ieee80211_vif *vif)
1868 {
1869         struct mac80211_hwsim_data *hwsim = hw->priv;
1870
1871         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1872
1873         cancel_delayed_work_sync(&hwsim->hw_scan);
1874
1875         mutex_lock(&hwsim->mutex);
1876         ieee80211_scan_completed(hwsim->hw, true);
1877         hwsim->tmp_chan = NULL;
1878         hwsim->hw_scan_request = NULL;
1879         hwsim->hw_scan_vif = NULL;
1880         mutex_unlock(&hwsim->mutex);
1881 }
1882
1883 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1884                                    struct ieee80211_vif *vif,
1885                                    const u8 *mac_addr)
1886 {
1887         struct mac80211_hwsim_data *hwsim = hw->priv;
1888
1889         mutex_lock(&hwsim->mutex);
1890
1891         if (hwsim->scanning) {
1892                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1893                 goto out;
1894         }
1895
1896         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1897
1898         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1899         hwsim->scanning = true;
1900
1901 out:
1902         mutex_unlock(&hwsim->mutex);
1903 }
1904
1905 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
1906                                             struct ieee80211_vif *vif)
1907 {
1908         struct mac80211_hwsim_data *hwsim = hw->priv;
1909
1910         mutex_lock(&hwsim->mutex);
1911
1912         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1913         hwsim->scanning = false;
1914         memset(hwsim->scan_addr, 0, ETH_ALEN);
1915
1916         mutex_unlock(&hwsim->mutex);
1917 }
1918
1919 static void hw_roc_done(struct work_struct *work)
1920 {
1921         struct mac80211_hwsim_data *hwsim =
1922                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1923
1924         mutex_lock(&hwsim->mutex);
1925         ieee80211_remain_on_channel_expired(hwsim->hw);
1926         hwsim->tmp_chan = NULL;
1927         mutex_unlock(&hwsim->mutex);
1928
1929         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1930 }
1931
1932 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1933                               struct ieee80211_vif *vif,
1934                               struct ieee80211_channel *chan,
1935                               int duration,
1936                               enum ieee80211_roc_type type)
1937 {
1938         struct mac80211_hwsim_data *hwsim = hw->priv;
1939
1940         mutex_lock(&hwsim->mutex);
1941         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1942                 mutex_unlock(&hwsim->mutex);
1943                 return -EBUSY;
1944         }
1945
1946         hwsim->tmp_chan = chan;
1947         mutex_unlock(&hwsim->mutex);
1948
1949         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1950                     chan->center_freq, duration);
1951
1952         ieee80211_ready_on_channel(hw);
1953
1954         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1955                                      msecs_to_jiffies(duration));
1956         return 0;
1957 }
1958
1959 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1960 {
1961         struct mac80211_hwsim_data *hwsim = hw->priv;
1962
1963         cancel_delayed_work_sync(&hwsim->roc_done);
1964
1965         mutex_lock(&hwsim->mutex);
1966         hwsim->tmp_chan = NULL;
1967         mutex_unlock(&hwsim->mutex);
1968
1969         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1970
1971         return 0;
1972 }
1973
1974 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1975                                       struct ieee80211_chanctx_conf *ctx)
1976 {
1977         hwsim_set_chanctx_magic(ctx);
1978         wiphy_debug(hw->wiphy,
1979                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1980                     ctx->def.chan->center_freq, ctx->def.width,
1981                     ctx->def.center_freq1, ctx->def.center_freq2);
1982         return 0;
1983 }
1984
1985 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1986                                           struct ieee80211_chanctx_conf *ctx)
1987 {
1988         wiphy_debug(hw->wiphy,
1989                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1990                     ctx->def.chan->center_freq, ctx->def.width,
1991                     ctx->def.center_freq1, ctx->def.center_freq2);
1992         hwsim_check_chanctx_magic(ctx);
1993         hwsim_clear_chanctx_magic(ctx);
1994 }
1995
1996 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1997                                           struct ieee80211_chanctx_conf *ctx,
1998                                           u32 changed)
1999 {
2000         hwsim_check_chanctx_magic(ctx);
2001         wiphy_debug(hw->wiphy,
2002                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2003                     ctx->def.chan->center_freq, ctx->def.width,
2004                     ctx->def.center_freq1, ctx->def.center_freq2);
2005 }
2006
2007 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2008                                              struct ieee80211_vif *vif,
2009                                              struct ieee80211_chanctx_conf *ctx)
2010 {
2011         hwsim_check_magic(vif);
2012         hwsim_check_chanctx_magic(ctx);
2013
2014         return 0;
2015 }
2016
2017 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2018                                                 struct ieee80211_vif *vif,
2019                                                 struct ieee80211_chanctx_conf *ctx)
2020 {
2021         hwsim_check_magic(vif);
2022         hwsim_check_chanctx_magic(ctx);
2023 }
2024
2025 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2026         "tx_pkts_nic",
2027         "tx_bytes_nic",
2028         "rx_pkts_nic",
2029         "rx_bytes_nic",
2030         "d_tx_dropped",
2031         "d_tx_failed",
2032         "d_ps_mode",
2033         "d_group",
2034         "d_tx_power",
2035 };
2036
2037 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2038
2039 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2040                                           struct ieee80211_vif *vif,
2041                                           u32 sset, u8 *data)
2042 {
2043         if (sset == ETH_SS_STATS)
2044                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2045                        sizeof(mac80211_hwsim_gstrings_stats));
2046 }
2047
2048 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2049                                             struct ieee80211_vif *vif, int sset)
2050 {
2051         if (sset == ETH_SS_STATS)
2052                 return MAC80211_HWSIM_SSTATS_LEN;
2053         return 0;
2054 }
2055
2056 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2057                                         struct ieee80211_vif *vif,
2058                                         struct ethtool_stats *stats, u64 *data)
2059 {
2060         struct mac80211_hwsim_data *ar = hw->priv;
2061         int i = 0;
2062
2063         data[i++] = ar->tx_pkts;
2064         data[i++] = ar->tx_bytes;
2065         data[i++] = ar->rx_pkts;
2066         data[i++] = ar->rx_bytes;
2067         data[i++] = ar->tx_dropped;
2068         data[i++] = ar->tx_failed;
2069         data[i++] = ar->ps;
2070         data[i++] = ar->group;
2071         data[i++] = ar->power_level;
2072
2073         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2074 }
2075
2076 static const struct ieee80211_ops mac80211_hwsim_ops = {
2077         .tx = mac80211_hwsim_tx,
2078         .start = mac80211_hwsim_start,
2079         .stop = mac80211_hwsim_stop,
2080         .add_interface = mac80211_hwsim_add_interface,
2081         .change_interface = mac80211_hwsim_change_interface,
2082         .remove_interface = mac80211_hwsim_remove_interface,
2083         .config = mac80211_hwsim_config,
2084         .configure_filter = mac80211_hwsim_configure_filter,
2085         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2086         .sta_add = mac80211_hwsim_sta_add,
2087         .sta_remove = mac80211_hwsim_sta_remove,
2088         .sta_notify = mac80211_hwsim_sta_notify,
2089         .set_tim = mac80211_hwsim_set_tim,
2090         .conf_tx = mac80211_hwsim_conf_tx,
2091         .get_survey = mac80211_hwsim_get_survey,
2092         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2093         .ampdu_action = mac80211_hwsim_ampdu_action,
2094         .sw_scan_start = mac80211_hwsim_sw_scan,
2095         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2096         .flush = mac80211_hwsim_flush,
2097         .get_tsf = mac80211_hwsim_get_tsf,
2098         .set_tsf = mac80211_hwsim_set_tsf,
2099         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2100         .get_et_stats = mac80211_hwsim_get_et_stats,
2101         .get_et_strings = mac80211_hwsim_get_et_strings,
2102 };
2103
2104 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2105
2106 struct hwsim_new_radio_params {
2107         unsigned int channels;
2108         const char *reg_alpha2;
2109         const struct ieee80211_regdomain *regd;
2110         bool reg_strict;
2111         bool p2p_device;
2112         bool use_chanctx;
2113         bool destroy_on_close;
2114         const char *hwname;
2115         bool no_vif;
2116 };
2117
2118 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2119                                    struct genl_info *info)
2120 {
2121         if (info)
2122                 genl_notify(&hwsim_genl_family, mcast_skb,
2123                             genl_info_net(info), info->snd_portid,
2124                             HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
2125         else
2126                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2127                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2128 }
2129
2130 static int append_radio_msg(struct sk_buff *skb, int id,
2131                             struct hwsim_new_radio_params *param)
2132 {
2133         int ret;
2134
2135         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2136         if (ret < 0)
2137                 return ret;
2138
2139         if (param->channels) {
2140                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2141                 if (ret < 0)
2142                         return ret;
2143         }
2144
2145         if (param->reg_alpha2) {
2146                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2147                               param->reg_alpha2);
2148                 if (ret < 0)
2149                         return ret;
2150         }
2151
2152         if (param->regd) {
2153                 int i;
2154
2155                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2156                         if (hwsim_world_regdom_custom[i] != param->regd)
2157                                 continue;
2158
2159                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2160                         if (ret < 0)
2161                                 return ret;
2162                         break;
2163                 }
2164         }
2165
2166         if (param->reg_strict) {
2167                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2168                 if (ret < 0)
2169                         return ret;
2170         }
2171
2172         if (param->p2p_device) {
2173                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2174                 if (ret < 0)
2175                         return ret;
2176         }
2177
2178         if (param->use_chanctx) {
2179                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2180                 if (ret < 0)
2181                         return ret;
2182         }
2183
2184         if (param->hwname) {
2185                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2186                               strlen(param->hwname), param->hwname);
2187                 if (ret < 0)
2188                         return ret;
2189         }
2190
2191         return 0;
2192 }
2193
2194 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2195                                   struct hwsim_new_radio_params *param)
2196 {
2197         struct sk_buff *mcast_skb;
2198         void *data;
2199
2200         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2201         if (!mcast_skb)
2202                 return;
2203
2204         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2205                            HWSIM_CMD_NEW_RADIO);
2206         if (!data)
2207                 goto out_err;
2208
2209         if (append_radio_msg(mcast_skb, id, param) < 0)
2210                 goto out_err;
2211
2212         genlmsg_end(mcast_skb, data);
2213
2214         hwsim_mcast_config_msg(mcast_skb, info);
2215         return;
2216
2217 out_err:
2218         genlmsg_cancel(mcast_skb, data);
2219         nlmsg_free(mcast_skb);
2220 }
2221
2222 static int mac80211_hwsim_new_radio(struct genl_info *info,
2223                                     struct hwsim_new_radio_params *param)
2224 {
2225         int err;
2226         u8 addr[ETH_ALEN];
2227         struct mac80211_hwsim_data *data;
2228         struct ieee80211_hw *hw;
2229         enum ieee80211_band band;
2230         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2231         int idx;
2232
2233         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2234                 return -EINVAL;
2235
2236         spin_lock_bh(&hwsim_radio_lock);
2237         idx = hwsim_radio_idx++;
2238         spin_unlock_bh(&hwsim_radio_lock);
2239
2240         if (param->use_chanctx)
2241                 ops = &mac80211_hwsim_mchan_ops;
2242         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2243         if (!hw) {
2244                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2245                 err = -ENOMEM;
2246                 goto failed;
2247         }
2248         data = hw->priv;
2249         data->hw = hw;
2250
2251         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2252         if (IS_ERR(data->dev)) {
2253                 printk(KERN_DEBUG
2254                        "mac80211_hwsim: device_create failed (%ld)\n",
2255                        PTR_ERR(data->dev));
2256                 err = -ENOMEM;
2257                 goto failed_drvdata;
2258         }
2259         data->dev->driver = &mac80211_hwsim_driver.driver;
2260         err = device_bind_driver(data->dev);
2261         if (err != 0) {
2262                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2263                        err);
2264                 goto failed_bind;
2265         }
2266
2267         skb_queue_head_init(&data->pending);
2268
2269         SET_IEEE80211_DEV(hw, data->dev);
2270         memset(addr, 0, ETH_ALEN);
2271         addr[0] = 0x02;
2272         addr[3] = idx >> 8;
2273         addr[4] = idx;
2274         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2275         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2276         data->addresses[1].addr[0] |= 0x40;
2277         hw->wiphy->n_addresses = 2;
2278         hw->wiphy->addresses = data->addresses;
2279
2280         data->channels = param->channels;
2281         data->use_chanctx = param->use_chanctx;
2282         data->idx = idx;
2283         data->destroy_on_close = param->destroy_on_close;
2284         if (info)
2285                 data->portid = info->snd_portid;
2286
2287         if (data->use_chanctx) {
2288                 hw->wiphy->max_scan_ssids = 255;
2289                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2290                 hw->wiphy->max_remain_on_channel_duration = 1000;
2291                 /* For channels > 1 DFS is not allowed */
2292                 hw->wiphy->n_iface_combinations = 1;
2293                 hw->wiphy->iface_combinations = &data->if_combination;
2294                 if (param->p2p_device)
2295                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2296                 else
2297                         data->if_combination = hwsim_if_comb[0];
2298                 data->if_combination.num_different_channels = data->channels;
2299         } else if (param->p2p_device) {
2300                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2301                 hw->wiphy->n_iface_combinations =
2302                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2303         } else {
2304                 hw->wiphy->iface_combinations = hwsim_if_comb;
2305                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2306         }
2307
2308         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2309         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2310
2311         hw->queues = 5;
2312         hw->offchannel_tx_hw_queue = 4;
2313         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2314                                      BIT(NL80211_IFTYPE_AP) |
2315                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2316                                      BIT(NL80211_IFTYPE_P2P_GO) |
2317                                      BIT(NL80211_IFTYPE_ADHOC) |
2318                                      BIT(NL80211_IFTYPE_MESH_POINT);
2319
2320         if (param->p2p_device)
2321                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2322
2323         hw->flags = IEEE80211_HW_MFP_CAPABLE |
2324                     IEEE80211_HW_SIGNAL_DBM |
2325                     IEEE80211_HW_AMPDU_AGGREGATION |
2326                     IEEE80211_HW_WANT_MONITOR_VIF |
2327                     IEEE80211_HW_QUEUE_CONTROL |
2328                     IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2329                     IEEE80211_HW_CHANCTX_STA_CSA;
2330         if (rctbl)
2331                 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2332
2333         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2334                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2335                             WIPHY_FLAG_AP_UAPSD |
2336                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2337         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2338                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2339                                NL80211_FEATURE_STATIC_SMPS |
2340                                NL80211_FEATURE_DYNAMIC_SMPS |
2341                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2342
2343         /* ask mac80211 to reserve space for magic */
2344         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2345         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2346         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2347
2348         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2349                 sizeof(hwsim_channels_2ghz));
2350         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2351                 sizeof(hwsim_channels_5ghz));
2352         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2353
2354         for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2355                 struct ieee80211_supported_band *sband = &data->bands[band];
2356                 switch (band) {
2357                 case IEEE80211_BAND_2GHZ:
2358                         sband->channels = data->channels_2ghz;
2359                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2360                         sband->bitrates = data->rates;
2361                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2362                         break;
2363                 case IEEE80211_BAND_5GHZ:
2364                         sband->channels = data->channels_5ghz;
2365                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2366                         sband->bitrates = data->rates + 4;
2367                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2368                         break;
2369                 default:
2370                         continue;
2371                 }
2372
2373                 sband->ht_cap.ht_supported = true;
2374                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2375                                     IEEE80211_HT_CAP_GRN_FLD |
2376                                     IEEE80211_HT_CAP_SGI_20 |
2377                                     IEEE80211_HT_CAP_SGI_40 |
2378                                     IEEE80211_HT_CAP_DSSSCCK40;
2379                 sband->ht_cap.ampdu_factor = 0x3;
2380                 sband->ht_cap.ampdu_density = 0x6;
2381                 memset(&sband->ht_cap.mcs, 0,
2382                        sizeof(sband->ht_cap.mcs));
2383                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2384                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2385                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2386
2387                 hw->wiphy->bands[band] = sband;
2388
2389                 sband->vht_cap.vht_supported = true;
2390                 sband->vht_cap.cap =
2391                         IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2392                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2393                         IEEE80211_VHT_CAP_RXLDPC |
2394                         IEEE80211_VHT_CAP_SHORT_GI_80 |
2395                         IEEE80211_VHT_CAP_SHORT_GI_160 |
2396                         IEEE80211_VHT_CAP_TXSTBC |
2397                         IEEE80211_VHT_CAP_RXSTBC_1 |
2398                         IEEE80211_VHT_CAP_RXSTBC_2 |
2399                         IEEE80211_VHT_CAP_RXSTBC_3 |
2400                         IEEE80211_VHT_CAP_RXSTBC_4 |
2401                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2402                 sband->vht_cap.vht_mcs.rx_mcs_map =
2403                         cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2404                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2405                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2406                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2407                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2408                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2409                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2410                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2411                 sband->vht_cap.vht_mcs.tx_mcs_map =
2412                         sband->vht_cap.vht_mcs.rx_mcs_map;
2413         }
2414
2415         /* By default all radios belong to the first group */
2416         data->group = 1;
2417         mutex_init(&data->mutex);
2418
2419         /* Enable frame retransmissions for lossy channels */
2420         hw->max_rates = 4;
2421         hw->max_rate_tries = 11;
2422
2423         if (param->reg_strict)
2424                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2425         if (param->regd) {
2426                 data->regd = param->regd;
2427                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2428                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2429                 /* give the regulatory workqueue a chance to run */
2430                 schedule_timeout_interruptible(1);
2431         }
2432
2433         if (param->no_vif)
2434                 hw->flags |= IEEE80211_HW_NO_AUTO_VIF;
2435
2436         err = ieee80211_register_hw(hw);
2437         if (err < 0) {
2438                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2439                        err);
2440                 goto failed_hw;
2441         }
2442
2443         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2444
2445         if (param->reg_alpha2) {
2446                 data->alpha2[0] = param->reg_alpha2[0];
2447                 data->alpha2[1] = param->reg_alpha2[1];
2448                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2449         }
2450
2451         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2452         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2453         debugfs_create_file("group", 0666, data->debugfs, data,
2454                             &hwsim_fops_group);
2455         if (!data->use_chanctx)
2456                 debugfs_create_file("dfs_simulate_radar", 0222,
2457                                     data->debugfs,
2458                                     data, &hwsim_simulate_radar);
2459
2460         tasklet_hrtimer_init(&data->beacon_timer,
2461                              mac80211_hwsim_beacon,
2462                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2463
2464         spin_lock_bh(&hwsim_radio_lock);
2465         list_add_tail(&data->list, &hwsim_radios);
2466         spin_unlock_bh(&hwsim_radio_lock);
2467
2468         if (idx > 0)
2469                 hwsim_mcast_new_radio(idx, info, param);
2470
2471         return idx;
2472
2473 failed_hw:
2474         device_release_driver(data->dev);
2475 failed_bind:
2476         device_unregister(data->dev);
2477 failed_drvdata:
2478         ieee80211_free_hw(hw);
2479 failed:
2480         return err;
2481 }
2482
2483 static void hwsim_mcast_del_radio(int id, const char *hwname,
2484                                   struct genl_info *info)
2485 {
2486         struct sk_buff *skb;
2487         void *data;
2488         int ret;
2489
2490         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2491         if (!skb)
2492                 return;
2493
2494         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2495                            HWSIM_CMD_DEL_RADIO);
2496         if (!data)
2497                 goto error;
2498
2499         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2500         if (ret < 0)
2501                 goto error;
2502
2503         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2504                       hwname);
2505         if (ret < 0)
2506                 goto error;
2507
2508         genlmsg_end(skb, data);
2509
2510         hwsim_mcast_config_msg(skb, info);
2511
2512         return;
2513
2514 error:
2515         nlmsg_free(skb);
2516 }
2517
2518 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2519                                      const char *hwname,
2520                                      struct genl_info *info)
2521 {
2522         hwsim_mcast_del_radio(data->idx, hwname, info);
2523         debugfs_remove_recursive(data->debugfs);
2524         ieee80211_unregister_hw(data->hw);
2525         device_release_driver(data->dev);
2526         device_unregister(data->dev);
2527         ieee80211_free_hw(data->hw);
2528 }
2529
2530 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2531                                     struct mac80211_hwsim_data *data,
2532                                     u32 portid, u32 seq,
2533                                     struct netlink_callback *cb, int flags)
2534 {
2535         void *hdr;
2536         struct hwsim_new_radio_params param = { };
2537         int res = -EMSGSIZE;
2538
2539         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2540                           HWSIM_CMD_GET_RADIO);
2541         if (!hdr)
2542                 return -EMSGSIZE;
2543
2544         if (cb)
2545                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2546
2547         if (data->alpha2[0] && data->alpha2[1])
2548                 param.reg_alpha2 = data->alpha2;
2549
2550         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2551                                         REGULATORY_STRICT_REG);
2552         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2553                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2554         param.use_chanctx = data->use_chanctx;
2555         param.regd = data->regd;
2556         param.channels = data->channels;
2557         param.hwname = wiphy_name(data->hw->wiphy);
2558
2559         res = append_radio_msg(skb, data->idx, &param);
2560         if (res < 0)
2561                 goto out_err;
2562
2563         genlmsg_end(skb, hdr);
2564         return 0;
2565
2566 out_err:
2567         genlmsg_cancel(skb, hdr);
2568         return res;
2569 }
2570
2571 static void mac80211_hwsim_free(void)
2572 {
2573         struct mac80211_hwsim_data *data;
2574
2575         spin_lock_bh(&hwsim_radio_lock);
2576         while ((data = list_first_entry_or_null(&hwsim_radios,
2577                                                 struct mac80211_hwsim_data,
2578                                                 list))) {
2579                 list_del(&data->list);
2580                 spin_unlock_bh(&hwsim_radio_lock);
2581                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2582                                          NULL);
2583                 spin_lock_bh(&hwsim_radio_lock);
2584         }
2585         spin_unlock_bh(&hwsim_radio_lock);
2586         class_destroy(hwsim_class);
2587 }
2588
2589 static const struct net_device_ops hwsim_netdev_ops = {
2590         .ndo_start_xmit         = hwsim_mon_xmit,
2591         .ndo_change_mtu         = eth_change_mtu,
2592         .ndo_set_mac_address    = eth_mac_addr,
2593         .ndo_validate_addr      = eth_validate_addr,
2594 };
2595
2596 static void hwsim_mon_setup(struct net_device *dev)
2597 {
2598         dev->netdev_ops = &hwsim_netdev_ops;
2599         dev->destructor = free_netdev;
2600         ether_setup(dev);
2601         dev->tx_queue_len = 0;
2602         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2603         memset(dev->dev_addr, 0, ETH_ALEN);
2604         dev->dev_addr[0] = 0x12;
2605 }
2606
2607 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2608 {
2609         struct mac80211_hwsim_data *data;
2610         bool _found = false;
2611
2612         spin_lock_bh(&hwsim_radio_lock);
2613         list_for_each_entry(data, &hwsim_radios, list) {
2614                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2615                         _found = true;
2616                         break;
2617                 }
2618         }
2619         spin_unlock_bh(&hwsim_radio_lock);
2620
2621         if (!_found)
2622                 return NULL;
2623
2624         return data;
2625 }
2626
2627 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2628                                            struct genl_info *info)
2629 {
2630
2631         struct ieee80211_hdr *hdr;
2632         struct mac80211_hwsim_data *data2;
2633         struct ieee80211_tx_info *txi;
2634         struct hwsim_tx_rate *tx_attempts;
2635         unsigned long ret_skb_ptr;
2636         struct sk_buff *skb, *tmp;
2637         const u8 *src;
2638         unsigned int hwsim_flags;
2639         int i;
2640         bool found = false;
2641
2642         if (info->snd_portid != wmediumd_portid)
2643                 return -EINVAL;
2644
2645         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2646             !info->attrs[HWSIM_ATTR_FLAGS] ||
2647             !info->attrs[HWSIM_ATTR_COOKIE] ||
2648             !info->attrs[HWSIM_ATTR_TX_INFO])
2649                 goto out;
2650
2651         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2652         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2653         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2654
2655         data2 = get_hwsim_data_ref_from_addr(src);
2656         if (!data2)
2657                 goto out;
2658
2659         /* look for the skb matching the cookie passed back from user */
2660         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2661                 if ((unsigned long)skb == ret_skb_ptr) {
2662                         skb_unlink(skb, &data2->pending);
2663                         found = true;
2664                         break;
2665                 }
2666         }
2667
2668         /* not found */
2669         if (!found)
2670                 goto out;
2671
2672         /* Tx info received because the frame was broadcasted on user space,
2673          so we get all the necessary info: tx attempts and skb control buff */
2674
2675         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2676                        info->attrs[HWSIM_ATTR_TX_INFO]);
2677
2678         /* now send back TX status */
2679         txi = IEEE80211_SKB_CB(skb);
2680
2681         ieee80211_tx_info_clear_status(txi);
2682
2683         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2684                 txi->status.rates[i].idx = tx_attempts[i].idx;
2685                 txi->status.rates[i].count = tx_attempts[i].count;
2686                 /*txi->status.rates[i].flags = 0;*/
2687         }
2688
2689         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2690
2691         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2692            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2693                 if (skb->len >= 16) {
2694                         hdr = (struct ieee80211_hdr *) skb->data;
2695                         mac80211_hwsim_monitor_ack(data2->channel,
2696                                                    hdr->addr2);
2697                 }
2698                 txi->flags |= IEEE80211_TX_STAT_ACK;
2699         }
2700         ieee80211_tx_status_irqsafe(data2->hw, skb);
2701         return 0;
2702 out:
2703         return -EINVAL;
2704
2705 }
2706
2707 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2708                                           struct genl_info *info)
2709 {
2710         struct mac80211_hwsim_data *data2;
2711         struct ieee80211_rx_status rx_status;
2712         const u8 *dst;
2713         int frame_data_len;
2714         void *frame_data;
2715         struct sk_buff *skb = NULL;
2716
2717         if (info->snd_portid != wmediumd_portid)
2718                 return -EINVAL;
2719
2720         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2721             !info->attrs[HWSIM_ATTR_FRAME] ||
2722             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2723             !info->attrs[HWSIM_ATTR_SIGNAL])
2724                 goto out;
2725
2726         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2727         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2728         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2729
2730         /* Allocate new skb here */
2731         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2732         if (skb == NULL)
2733                 goto err;
2734
2735         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2736                 goto err;
2737
2738         /* Copy the data */
2739         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2740
2741         data2 = get_hwsim_data_ref_from_addr(dst);
2742         if (!data2)
2743                 goto out;
2744
2745         /* check if radio is configured properly */
2746
2747         if (data2->idle || !data2->started)
2748                 goto out;
2749
2750         /* A frame is received from user space */
2751         memset(&rx_status, 0, sizeof(rx_status));
2752         /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2753          * packets?
2754          */
2755         rx_status.freq = data2->channel->center_freq;
2756         rx_status.band = data2->channel->band;
2757         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2758         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2759
2760         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2761         data2->rx_pkts++;
2762         data2->rx_bytes += skb->len;
2763         ieee80211_rx_irqsafe(data2->hw, skb);
2764
2765         return 0;
2766 err:
2767         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2768 out:
2769         dev_kfree_skb(skb);
2770         return -EINVAL;
2771 }
2772
2773 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2774                                       struct genl_info *info)
2775 {
2776         struct mac80211_hwsim_data *data;
2777         int chans = 1;
2778
2779         spin_lock_bh(&hwsim_radio_lock);
2780         list_for_each_entry(data, &hwsim_radios, list)
2781                 chans = max(chans, data->channels);
2782         spin_unlock_bh(&hwsim_radio_lock);
2783
2784         /* In the future we should revise the userspace API and allow it
2785          * to set a flag that it does support multi-channel, then we can
2786          * let this pass conditionally on the flag.
2787          * For current userspace, prohibit it since it won't work right.
2788          */
2789         if (chans > 1)
2790                 return -EOPNOTSUPP;
2791
2792         if (wmediumd_portid)
2793                 return -EBUSY;
2794
2795         wmediumd_portid = info->snd_portid;
2796
2797         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2798                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2799
2800         return 0;
2801 }
2802
2803 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2804 {
2805         struct hwsim_new_radio_params param = { 0 };
2806
2807         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2808         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2809         param.channels = channels;
2810         param.destroy_on_close =
2811                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2812
2813         if (info->attrs[HWSIM_ATTR_CHANNELS])
2814                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2815
2816         if (info->attrs[HWSIM_ATTR_NO_VIF])
2817                 param.no_vif = true;
2818
2819         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2820                 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2821
2822         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2823                 param.use_chanctx = true;
2824         else
2825                 param.use_chanctx = (param.channels > 1);
2826
2827         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2828                 param.reg_alpha2 =
2829                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2830
2831         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2832                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2833
2834                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2835                         return -EINVAL;
2836                 param.regd = hwsim_world_regdom_custom[idx];
2837         }
2838
2839         return mac80211_hwsim_new_radio(info, &param);
2840 }
2841
2842 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2843 {
2844         struct mac80211_hwsim_data *data;
2845         s64 idx = -1;
2846         const char *hwname = NULL;
2847
2848         if (info->attrs[HWSIM_ATTR_RADIO_ID])
2849                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2850         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2851                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2852         else
2853                 return -EINVAL;
2854
2855         spin_lock_bh(&hwsim_radio_lock);
2856         list_for_each_entry(data, &hwsim_radios, list) {
2857                 if (idx >= 0) {
2858                         if (data->idx != idx)
2859                                 continue;
2860                 } else {
2861                         if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
2862                                 continue;
2863                 }
2864
2865                 list_del(&data->list);
2866                 spin_unlock_bh(&hwsim_radio_lock);
2867                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2868                                          info);
2869                 return 0;
2870         }
2871         spin_unlock_bh(&hwsim_radio_lock);
2872
2873         return -ENODEV;
2874 }
2875
2876 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
2877 {
2878         struct mac80211_hwsim_data *data;
2879         struct sk_buff *skb;
2880         int idx, res = -ENODEV;
2881
2882         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2883                 return -EINVAL;
2884         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2885
2886         spin_lock_bh(&hwsim_radio_lock);
2887         list_for_each_entry(data, &hwsim_radios, list) {
2888                 if (data->idx != idx)
2889                         continue;
2890
2891                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2892                 if (!skb) {
2893                         res = -ENOMEM;
2894                         goto out_err;
2895                 }
2896
2897                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
2898                                                info->snd_seq, NULL, 0);
2899                 if (res < 0) {
2900                         nlmsg_free(skb);
2901                         goto out_err;
2902                 }
2903
2904                 genlmsg_reply(skb, info);
2905                 break;
2906         }
2907
2908 out_err:
2909         spin_unlock_bh(&hwsim_radio_lock);
2910
2911         return res;
2912 }
2913
2914 static int hwsim_dump_radio_nl(struct sk_buff *skb,
2915                                struct netlink_callback *cb)
2916 {
2917         int idx = cb->args[0];
2918         struct mac80211_hwsim_data *data = NULL;
2919         int res;
2920
2921         spin_lock_bh(&hwsim_radio_lock);
2922
2923         if (idx == hwsim_radio_idx)
2924                 goto done;
2925
2926         list_for_each_entry(data, &hwsim_radios, list) {
2927                 if (data->idx < idx)
2928                         continue;
2929
2930                 res = mac80211_hwsim_get_radio(skb, data,
2931                                                NETLINK_CB(cb->skb).portid,
2932                                                cb->nlh->nlmsg_seq, cb,
2933                                                NLM_F_MULTI);
2934                 if (res < 0)
2935                         break;
2936
2937                 idx = data->idx + 1;
2938         }
2939
2940         cb->args[0] = idx;
2941
2942 done:
2943         spin_unlock_bh(&hwsim_radio_lock);
2944         return skb->len;
2945 }
2946
2947 /* Generic Netlink operations array */
2948 static const struct genl_ops hwsim_ops[] = {
2949         {
2950                 .cmd = HWSIM_CMD_REGISTER,
2951                 .policy = hwsim_genl_policy,
2952                 .doit = hwsim_register_received_nl,
2953                 .flags = GENL_ADMIN_PERM,
2954         },
2955         {
2956                 .cmd = HWSIM_CMD_FRAME,
2957                 .policy = hwsim_genl_policy,
2958                 .doit = hwsim_cloned_frame_received_nl,
2959         },
2960         {
2961                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2962                 .policy = hwsim_genl_policy,
2963                 .doit = hwsim_tx_info_frame_received_nl,
2964         },
2965         {
2966                 .cmd = HWSIM_CMD_NEW_RADIO,
2967                 .policy = hwsim_genl_policy,
2968                 .doit = hwsim_new_radio_nl,
2969                 .flags = GENL_ADMIN_PERM,
2970         },
2971         {
2972                 .cmd = HWSIM_CMD_DEL_RADIO,
2973                 .policy = hwsim_genl_policy,
2974                 .doit = hwsim_del_radio_nl,
2975                 .flags = GENL_ADMIN_PERM,
2976         },
2977         {
2978                 .cmd = HWSIM_CMD_GET_RADIO,
2979                 .policy = hwsim_genl_policy,
2980                 .doit = hwsim_get_radio_nl,
2981                 .dumpit = hwsim_dump_radio_nl,
2982         },
2983 };
2984
2985 static void destroy_radio(struct work_struct *work)
2986 {
2987         struct mac80211_hwsim_data *data =
2988                 container_of(work, struct mac80211_hwsim_data, destroy_work);
2989
2990         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
2991 }
2992
2993 static void remove_user_radios(u32 portid)
2994 {
2995         struct mac80211_hwsim_data *entry, *tmp;
2996
2997         spin_lock_bh(&hwsim_radio_lock);
2998         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
2999                 if (entry->destroy_on_close && entry->portid == portid) {
3000                         list_del(&entry->list);
3001                         INIT_WORK(&entry->destroy_work, destroy_radio);
3002                         schedule_work(&entry->destroy_work);
3003                 }
3004         }
3005         spin_unlock_bh(&hwsim_radio_lock);
3006 }
3007
3008 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3009                                          unsigned long state,
3010                                          void *_notify)
3011 {
3012         struct netlink_notify *notify = _notify;
3013
3014         if (state != NETLINK_URELEASE)
3015                 return NOTIFY_DONE;
3016
3017         remove_user_radios(notify->portid);
3018
3019         if (notify->portid == wmediumd_portid) {
3020                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3021                        " socket, switching to perfect channel medium\n");
3022                 wmediumd_portid = 0;
3023         }
3024         return NOTIFY_DONE;
3025
3026 }
3027
3028 static struct notifier_block hwsim_netlink_notifier = {
3029         .notifier_call = mac80211_hwsim_netlink_notify,
3030 };
3031
3032 static int hwsim_init_netlink(void)
3033 {
3034         int rc;
3035
3036         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3037
3038         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3039                                                   hwsim_ops,
3040                                                   hwsim_mcgrps);
3041         if (rc)
3042                 goto failure;
3043
3044         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3045         if (rc)
3046                 goto failure;
3047
3048         return 0;
3049
3050 failure:
3051         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3052         return -EINVAL;
3053 }
3054
3055 static void hwsim_exit_netlink(void)
3056 {
3057         /* unregister the notifier */
3058         netlink_unregister_notifier(&hwsim_netlink_notifier);
3059         /* unregister the family */
3060         genl_unregister_family(&hwsim_genl_family);
3061 }
3062
3063 static int __init init_mac80211_hwsim(void)
3064 {
3065         int i, err;
3066
3067         if (radios < 0 || radios > 100)
3068                 return -EINVAL;
3069
3070         if (channels < 1)
3071                 return -EINVAL;
3072
3073         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3074         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3075         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3076         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3077         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3078         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3079         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3080         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3081         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3082         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3083         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3084                 mac80211_hwsim_assign_vif_chanctx;
3085         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3086                 mac80211_hwsim_unassign_vif_chanctx;
3087
3088         spin_lock_init(&hwsim_radio_lock);
3089         INIT_LIST_HEAD(&hwsim_radios);
3090
3091         err = platform_driver_register(&mac80211_hwsim_driver);
3092         if (err)
3093                 return err;
3094
3095         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3096         if (IS_ERR(hwsim_class)) {
3097                 err = PTR_ERR(hwsim_class);
3098                 goto out_unregister_driver;
3099         }
3100
3101         err = hwsim_init_netlink();
3102         if (err < 0)
3103                 goto out_unregister_driver;
3104
3105         for (i = 0; i < radios; i++) {
3106                 struct hwsim_new_radio_params param = { 0 };
3107
3108                 param.channels = channels;
3109
3110                 switch (regtest) {
3111                 case HWSIM_REGTEST_DIFF_COUNTRY:
3112                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3113                                 param.reg_alpha2 = hwsim_alpha2s[i];
3114                         break;
3115                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3116                         if (!i)
3117                                 param.reg_alpha2 = hwsim_alpha2s[0];
3118                         break;
3119                 case HWSIM_REGTEST_STRICT_ALL:
3120                         param.reg_strict = true;
3121                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3122                         param.reg_alpha2 = hwsim_alpha2s[0];
3123                         break;
3124                 case HWSIM_REGTEST_WORLD_ROAM:
3125                         if (i == 0)
3126                                 param.regd = &hwsim_world_regdom_custom_01;
3127                         break;
3128                 case HWSIM_REGTEST_CUSTOM_WORLD:
3129                         param.regd = &hwsim_world_regdom_custom_01;
3130                         break;
3131                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3132                         if (i == 0)
3133                                 param.regd = &hwsim_world_regdom_custom_01;
3134                         else if (i == 1)
3135                                 param.regd = &hwsim_world_regdom_custom_02;
3136                         break;
3137                 case HWSIM_REGTEST_STRICT_FOLLOW:
3138                         if (i == 0) {
3139                                 param.reg_strict = true;
3140                                 param.reg_alpha2 = hwsim_alpha2s[0];
3141                         }
3142                         break;
3143                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3144                         if (i == 0) {
3145                                 param.reg_strict = true;
3146                                 param.reg_alpha2 = hwsim_alpha2s[0];
3147                         } else if (i == 1) {
3148                                 param.reg_alpha2 = hwsim_alpha2s[1];
3149                         }
3150                         break;
3151                 case HWSIM_REGTEST_ALL:
3152                         switch (i) {
3153                         case 0:
3154                                 param.regd = &hwsim_world_regdom_custom_01;
3155                                 break;
3156                         case 1:
3157                                 param.regd = &hwsim_world_regdom_custom_02;
3158                                 break;
3159                         case 2:
3160                                 param.reg_alpha2 = hwsim_alpha2s[0];
3161                                 break;
3162                         case 3:
3163                                 param.reg_alpha2 = hwsim_alpha2s[1];
3164                                 break;
3165                         case 4:
3166                                 param.reg_strict = true;
3167                                 param.reg_alpha2 = hwsim_alpha2s[2];
3168                                 break;
3169                         }
3170                         break;
3171                 default:
3172                         break;
3173                 }
3174
3175                 param.p2p_device = support_p2p_device;
3176                 param.use_chanctx = channels > 1;
3177
3178                 err = mac80211_hwsim_new_radio(NULL, &param);
3179                 if (err < 0)
3180                         goto out_free_radios;
3181         }
3182
3183         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3184                                  hwsim_mon_setup);
3185         if (hwsim_mon == NULL) {
3186                 err = -ENOMEM;
3187                 goto out_free_radios;
3188         }
3189
3190         rtnl_lock();
3191         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3192         if (err < 0) {
3193                 rtnl_unlock();
3194                 goto out_free_radios;
3195         }
3196
3197         err = register_netdevice(hwsim_mon);
3198         if (err < 0) {
3199                 rtnl_unlock();
3200                 goto out_free_mon;
3201         }
3202         rtnl_unlock();
3203
3204         return 0;
3205
3206 out_free_mon:
3207         free_netdev(hwsim_mon);
3208 out_free_radios:
3209         mac80211_hwsim_free();
3210 out_unregister_driver:
3211         platform_driver_unregister(&mac80211_hwsim_driver);
3212         return err;
3213 }
3214 module_init(init_mac80211_hwsim);
3215
3216 static void __exit exit_mac80211_hwsim(void)
3217 {
3218         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3219
3220         hwsim_exit_netlink();
3221
3222         mac80211_hwsim_free();
3223         unregister_netdev(hwsim_mon);
3224         platform_driver_unregister(&mac80211_hwsim_driver);
3225 }
3226 module_exit(exit_mac80211_hwsim);