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         genlmsg_unicast(&init_net, skb, dst_portid);
 950
 951         /* Enqueue the packet */
 952         skb_queue_tail(&data->pending, my_skb);
 953         data->tx_pkts++;
 954         data->tx_bytes += my_skb->len;
 955         return;
 956
 957 nla_put_failure:
 958         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 959         ieee80211_free_txskb(hw, my_skb);
 960         data->tx_failed++;
 961 }
 962
 963 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 964                                struct ieee80211_channel *c2)
 965 {
 966         if (!c1 || !c2)
 967                 return false;
 968
 969         return c1->center_freq == c2->center_freq;
 970 }
 971
 972 struct tx_iter_data {
 973         struct ieee80211_channel *channel;
 974         bool receive;
 975 };
 976
 977 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 978                                    struct ieee80211_vif *vif)
 979 {
 980         struct tx_iter_data *data = _data;
 981
 982         if (!vif->chanctx_conf)
 983                 return;
 984
 985         if (!hwsim_chans_compat(data->channel,
 986                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 987                 return;
 988
 989         data->receive = true;
 990 }
 991
 992 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
 993 {
 994         /*
 995          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
 996          * e.g. like this:
 997          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
 998          * (but you should use a valid OUI, not that)
 999          *
1000          * If anyone wants to 'donate' a radiotap OUI/subns code
1001          * please send a patch removing this #ifdef and changing
1002          * the values accordingly.
1003          */
1004 #ifdef HWSIM_RADIOTAP_OUI
1005         struct ieee80211_vendor_radiotap *rtap;
1006
1007         /*
1008          * Note that this code requires the headroom in the SKB
1009          * that was allocated earlier.
1010          */
1011         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1012         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1013         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1014         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1015         rtap->subns = 127;
1016
1017         /*
1018          * Radiotap vendor namespaces can (and should) also be
1019          * split into fields by using the standard radiotap
1020          * presence bitmap mechanism. Use just BIT(0) here for
1021          * the presence bitmap.
1022          */
1023         rtap->present = BIT(0);
1024         /* We have 8 bytes of (dummy) data */
1025         rtap->len = 8;
1026         /* For testing, also require it to be aligned */
1027         rtap->align = 8;
1028         /* And also test that padding works, 4 bytes */
1029         rtap->pad = 4;
1030         /* push the data */
1031         memcpy(rtap->data, "ABCDEFGH", 8);
1032         /* make sure to clear padding, mac80211 doesn't */
1033         memset(rtap->data + 8, 0, 4);
1034
1035         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1036 #endif
1037 }
1038
1039 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1040                                           struct sk_buff *skb,
1041                                           struct ieee80211_channel *chan)
1042 {
1043         struct mac80211_hwsim_data *data = hw->priv, *data2;
1044         bool ack = false;
1045         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1046         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1047         struct ieee80211_rx_status rx_status;
1048         u64 now;
1049
1050         memset(&rx_status, 0, sizeof(rx_status));
1051         rx_status.flag |= RX_FLAG_MACTIME_START;
1052         rx_status.freq = chan->center_freq;
1053         rx_status.band = chan->band;
1054         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1055                 rx_status.rate_idx =
1056                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1057                 rx_status.vht_nss =
1058                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1059                 rx_status.flag |= RX_FLAG_VHT;
1060         } else {
1061                 rx_status.rate_idx = info->control.rates[0].idx;
1062                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1063                         rx_status.flag |= RX_FLAG_HT;
1064         }
1065         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1066                 rx_status.flag |= RX_FLAG_40MHZ;
1067         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1068                 rx_status.flag |= RX_FLAG_SHORT_GI;
1069         /* TODO: simulate real signal strength (and optional packet loss) */
1070         rx_status.signal = data->power_level - 50;
1071
1072         if (data->ps != PS_DISABLED)
1073                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1074
1075         /* release the skb's source info */
1076         skb_orphan(skb);
1077         skb_dst_drop(skb);
1078         skb->mark = 0;
1079         secpath_reset(skb);
1080         nf_reset(skb);
1081
1082         /*
1083          * Get absolute mactime here so all HWs RX at the "same time", and
1084          * absolute TX time for beacon mactime so the timestamp matches.
1085          * Giving beacons a different mactime than non-beacons looks messy, but
1086          * it helps the Toffset be exact and a ~10us mactime discrepancy
1087          * probably doesn't really matter.
1088          */
1089         if (ieee80211_is_beacon(hdr->frame_control) ||
1090             ieee80211_is_probe_resp(hdr->frame_control))
1091                 now = data->abs_bcn_ts;
1092         else
1093                 now = mac80211_hwsim_get_tsf_raw();
1094
1095         /* Copy skb to all enabled radios that are on the current frequency */
1096         spin_lock(&hwsim_radio_lock);
1097         list_for_each_entry(data2, &hwsim_radios, list) {
1098                 struct sk_buff *nskb;
1099                 struct tx_iter_data tx_iter_data = {
1100                         .receive = false,
1101                         .channel = chan,
1102                 };
1103
1104                 if (data == data2)
1105                         continue;
1106
1107                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1108                     !hwsim_ps_rx_ok(data2, skb))
1109                         continue;
1110
1111                 if (!(data->group & data2->group))
1112                         continue;
1113
1114                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1115                     !hwsim_chans_compat(chan, data2->channel)) {
1116                         ieee80211_iterate_active_interfaces_atomic(
1117                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1118                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1119                         if (!tx_iter_data.receive)
1120                                 continue;
1121                 }
1122
1123                 /*
1124                  * reserve some space for our vendor and the normal
1125                  * radiotap header, since we're copying anyway
1126                  */
1127                 if (skb->len < PAGE_SIZE && paged_rx) {
1128                         struct page *page = alloc_page(GFP_ATOMIC);
1129
1130                         if (!page)
1131                                 continue;
1132
1133                         nskb = dev_alloc_skb(128);
1134                         if (!nskb) {
1135                                 __free_page(page);
1136                                 continue;
1137                         }
1138
1139                         memcpy(page_address(page), skb->data, skb->len);
1140                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1141                 } else {
1142                         nskb = skb_copy(skb, GFP_ATOMIC);
1143                         if (!nskb)
1144                                 continue;
1145                 }
1146
1147                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1148                         ack = true;
1149
1150                 rx_status.mactime = now + data2->tsf_offset;
1151
1152                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1153
1154                 mac80211_hwsim_add_vendor_rtap(nskb);
1155
1156                 data2->rx_pkts++;
1157                 data2->rx_bytes += nskb->len;
1158                 ieee80211_rx_irqsafe(data2->hw, nskb);
1159         }
1160         spin_unlock(&hwsim_radio_lock);
1161
1162         return ack;
1163 }
1164
1165 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1166                               struct ieee80211_tx_control *control,
1167                               struct sk_buff *skb)
1168 {
1169         struct mac80211_hwsim_data *data = hw->priv;
1170         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1171         struct ieee80211_chanctx_conf *chanctx_conf;
1172         struct ieee80211_channel *channel;
1173         bool ack;
1174         u32 _portid;
1175
1176         if (WARN_ON(skb->len < 10)) {
1177                 /* Should not happen; just a sanity check for addr1 use */
1178                 ieee80211_free_txskb(hw, skb);
1179                 return;
1180         }
1181
1182         if (!data->use_chanctx) {
1183                 channel = data->channel;
1184         } else if (txi->hw_queue == 4) {
1185                 channel = data->tmp_chan;
1186         } else {
1187                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1188                 if (chanctx_conf)
1189                         channel = chanctx_conf->def.chan;
1190                 else
1191                         channel = NULL;
1192         }
1193
1194         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1195                 ieee80211_free_txskb(hw, skb);
1196                 return;
1197         }
1198
1199         if (data->idle && !data->tmp_chan) {
1200                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1201                 ieee80211_free_txskb(hw, skb);
1202                 return;
1203         }
1204
1205         if (txi->control.vif)
1206                 hwsim_check_magic(txi->control.vif);
1207         if (control->sta)
1208                 hwsim_check_sta_magic(control->sta);
1209
1210         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1211                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1212                                        txi->control.rates,
1213                                        ARRAY_SIZE(txi->control.rates));
1214
1215         txi->rate_driver_data[0] = channel;
1216         mac80211_hwsim_monitor_rx(hw, skb, channel);
1217
1218         /* wmediumd mode check */
1219         _portid = ACCESS_ONCE(wmediumd_portid);
1220
1221         if (_portid)
1222                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1223
1224         /* NO wmediumd detected, perfect medium simulation */
1225         data->tx_pkts++;
1226         data->tx_bytes += skb->len;
1227         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1228
1229         if (ack && skb->len >= 16) {
1230                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1231                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1232         }
1233
1234         ieee80211_tx_info_clear_status(txi);
1235
1236         /* frame was transmitted at most favorable rate at first attempt */
1237         txi->control.rates[0].count = 1;
1238         txi->control.rates[1].idx = -1;
1239
1240         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1241                 txi->flags |= IEEE80211_TX_STAT_ACK;
1242         ieee80211_tx_status_irqsafe(hw, skb);
1243 }
1244
1245
1246 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1247 {
1248         struct mac80211_hwsim_data *data = hw->priv;
1249         wiphy_debug(hw->wiphy, "%s\n", __func__);
1250         data->started = true;
1251         return 0;
1252 }
1253
1254
1255 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1256 {
1257         struct mac80211_hwsim_data *data = hw->priv;
1258         data->started = false;
1259         tasklet_hrtimer_cancel(&data->beacon_timer);
1260         wiphy_debug(hw->wiphy, "%s\n", __func__);
1261 }
1262
1263
1264 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1265                                         struct ieee80211_vif *vif)
1266 {
1267         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1268                     __func__, ieee80211_vif_type_p2p(vif),
1269                     vif->addr);
1270         hwsim_set_magic(vif);
1271
1272         vif->cab_queue = 0;
1273         vif->hw_queue[IEEE80211_AC_VO] = 0;
1274         vif->hw_queue[IEEE80211_AC_VI] = 1;
1275         vif->hw_queue[IEEE80211_AC_BE] = 2;
1276         vif->hw_queue[IEEE80211_AC_BK] = 3;
1277
1278         return 0;
1279 }
1280
1281
1282 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1283                                            struct ieee80211_vif *vif,
1284                                            enum nl80211_iftype newtype,
1285                                            bool newp2p)
1286 {
1287         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1288         wiphy_debug(hw->wiphy,
1289                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1290                     __func__, ieee80211_vif_type_p2p(vif),
1291                     newtype, vif->addr);
1292         hwsim_check_magic(vif);
1293
1294         /*
1295          * interface may change from non-AP to AP in
1296          * which case this needs to be set up again
1297          */
1298         vif->cab_queue = 0;
1299
1300         return 0;
1301 }
1302
1303 static void mac80211_hwsim_remove_interface(
1304         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1305 {
1306         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1307                     __func__, ieee80211_vif_type_p2p(vif),
1308                     vif->addr);
1309         hwsim_check_magic(vif);
1310         hwsim_clear_magic(vif);
1311 }
1312
1313 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1314                                     struct sk_buff *skb,
1315                                     struct ieee80211_channel *chan)
1316 {
1317         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1318
1319         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1320                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1321                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1322                                        txi->control.rates,
1323                                        ARRAY_SIZE(txi->control.rates));
1324         }
1325
1326         mac80211_hwsim_monitor_rx(hw, skb, chan);
1327
1328         if (_pid)
1329                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1330
1331         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1332         dev_kfree_skb(skb);
1333 }
1334
1335 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1336                                      struct ieee80211_vif *vif)
1337 {
1338         struct mac80211_hwsim_data *data = arg;
1339         struct ieee80211_hw *hw = data->hw;
1340         struct ieee80211_tx_info *info;
1341         struct ieee80211_rate *txrate;
1342         struct ieee80211_mgmt *mgmt;
1343         struct sk_buff *skb;
1344
1345         hwsim_check_magic(vif);
1346
1347         if (vif->type != NL80211_IFTYPE_AP &&
1348             vif->type != NL80211_IFTYPE_MESH_POINT &&
1349             vif->type != NL80211_IFTYPE_ADHOC)
1350                 return;
1351
1352         skb = ieee80211_beacon_get(hw, vif);
1353         if (skb == NULL)
1354                 return;
1355         info = IEEE80211_SKB_CB(skb);
1356         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1357                 ieee80211_get_tx_rates(vif, NULL, skb,
1358                                        info->control.rates,
1359                                        ARRAY_SIZE(info->control.rates));
1360
1361         txrate = ieee80211_get_tx_rate(hw, info);
1362
1363         mgmt = (struct ieee80211_mgmt *) skb->data;
1364         /* fake header transmission time */
1365         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1366         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1367                                                data->tsf_offset +
1368                                                24 * 8 * 10 / txrate->bitrate);
1369
1370         mac80211_hwsim_tx_frame(hw, skb,
1371                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1372
1373         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1374                 ieee80211_csa_finish(vif);
1375 }
1376
1377 static enum hrtimer_restart
1378 mac80211_hwsim_beacon(struct hrtimer *timer)
1379 {
1380         struct mac80211_hwsim_data *data =
1381                 container_of(timer, struct mac80211_hwsim_data,
1382                              beacon_timer.timer);
1383         struct ieee80211_hw *hw = data->hw;
1384         u64 bcn_int = data->beacon_int;
1385         ktime_t next_bcn;
1386
1387         if (!data->started)
1388                 goto out;
1389
1390         ieee80211_iterate_active_interfaces_atomic(
1391                 hw, IEEE80211_IFACE_ITER_NORMAL,
1392                 mac80211_hwsim_beacon_tx, data);
1393
1394         /* beacon at new TBTT + beacon interval */
1395         if (data->bcn_delta) {
1396                 bcn_int -= data->bcn_delta;
1397                 data->bcn_delta = 0;
1398         }
1399
1400         next_bcn = ktime_add(hrtimer_get_expires(timer),
1401                              ns_to_ktime(bcn_int * 1000));
1402         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1403 out:
1404         return HRTIMER_NORESTART;
1405 }
1406
1407 static const char * const hwsim_chanwidths[] = {
1408         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1409         [NL80211_CHAN_WIDTH_20] = "ht20",
1410         [NL80211_CHAN_WIDTH_40] = "ht40",
1411         [NL80211_CHAN_WIDTH_80] = "vht80",
1412         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1413         [NL80211_CHAN_WIDTH_160] = "vht160",
1414 };
1415
1416 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1417 {
1418         struct mac80211_hwsim_data *data = hw->priv;
1419         struct ieee80211_conf *conf = &hw->conf;
1420         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1421                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1422                 [IEEE80211_SMPS_OFF] = "off",
1423                 [IEEE80211_SMPS_STATIC] = "static",
1424                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1425         };
1426
1427         if (conf->chandef.chan)
1428                 wiphy_debug(hw->wiphy,
1429                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1430                             __func__,
1431                             conf->chandef.chan->center_freq,
1432                             conf->chandef.center_freq1,
1433                             conf->chandef.center_freq2,
1434                             hwsim_chanwidths[conf->chandef.width],
1435                             !!(conf->flags & IEEE80211_CONF_IDLE),
1436                             !!(conf->flags & IEEE80211_CONF_PS),
1437                             smps_modes[conf->smps_mode]);
1438         else
1439                 wiphy_debug(hw->wiphy,
1440                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1441                             __func__,
1442                             !!(conf->flags & IEEE80211_CONF_IDLE),
1443                             !!(conf->flags & IEEE80211_CONF_PS),
1444                             smps_modes[conf->smps_mode]);
1445
1446         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1447
1448         data->channel = conf->chandef.chan;
1449
1450         WARN_ON(data->channel && data->use_chanctx);
1451
1452         data->power_level = conf->power_level;
1453         if (!data->started || !data->beacon_int)
1454                 tasklet_hrtimer_cancel(&data->beacon_timer);
1455         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1456                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1457                 u32 bcn_int = data->beacon_int;
1458                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1459
1460                 tasklet_hrtimer_start(&data->beacon_timer,
1461                                       ns_to_ktime(until_tbtt * 1000),
1462                                       HRTIMER_MODE_REL);
1463         }
1464
1465         return 0;
1466 }
1467
1468
1469 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1470                                             unsigned int changed_flags,
1471                                             unsigned int *total_flags,u64 multicast)
1472 {
1473         struct mac80211_hwsim_data *data = hw->priv;
1474
1475         wiphy_debug(hw->wiphy, "%s\n", __func__);
1476
1477         data->rx_filter = 0;
1478         if (*total_flags & FIF_PROMISC_IN_BSS)
1479                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1480         if (*total_flags & FIF_ALLMULTI)
1481                 data->rx_filter |= FIF_ALLMULTI;
1482
1483         *total_flags = data->rx_filter;
1484 }
1485
1486 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1487                                        struct ieee80211_vif *vif)
1488 {
1489         unsigned int *count = data;
1490         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1491
1492         if (vp->bcn_en)
1493                 (*count)++;
1494 }
1495
1496 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1497                                             struct ieee80211_vif *vif,
1498                                             struct ieee80211_bss_conf *info,
1499                                             u32 changed)
1500 {
1501         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1502         struct mac80211_hwsim_data *data = hw->priv;
1503
1504         hwsim_check_magic(vif);
1505
1506         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1507                     __func__, changed, vif->addr);
1508
1509         if (changed & BSS_CHANGED_BSSID) {
1510                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1511                             __func__, info->bssid);
1512                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1513         }
1514
1515         if (changed & BSS_CHANGED_ASSOC) {
1516                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1517                             info->assoc, info->aid);
1518                 vp->assoc = info->assoc;
1519                 vp->aid = info->aid;
1520         }
1521
1522         if (changed & BSS_CHANGED_BEACON_INT) {
1523                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1524                 data->beacon_int = info->beacon_int * 1024;
1525         }
1526
1527         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1528                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1529                 vp->bcn_en = info->enable_beacon;
1530                 if (data->started &&
1531                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1532                     info->enable_beacon) {
1533                         u64 tsf, until_tbtt;
1534                         u32 bcn_int;
1535                         if (WARN_ON(!data->beacon_int))
1536                                 data->beacon_int = 1000 * 1024;
1537                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1538                         bcn_int = data->beacon_int;
1539                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1540                         tasklet_hrtimer_start(&data->beacon_timer,
1541                                               ns_to_ktime(until_tbtt * 1000),
1542                                               HRTIMER_MODE_REL);
1543                 } else if (!info->enable_beacon) {
1544                         unsigned int count = 0;
1545                         ieee80211_iterate_active_interfaces_atomic(
1546                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1547                                 mac80211_hwsim_bcn_en_iter, &count);
1548                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1549                                     count);
1550                         if (count == 0)
1551                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1552                 }
1553         }
1554
1555         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1556                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1557                             info->use_cts_prot);
1558         }
1559
1560         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1561                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1562                             info->use_short_preamble);
1563         }
1564
1565         if (changed & BSS_CHANGED_ERP_SLOT) {
1566                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1567         }
1568
1569         if (changed & BSS_CHANGED_HT) {
1570                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1571                             info->ht_operation_mode);
1572         }
1573
1574         if (changed & BSS_CHANGED_BASIC_RATES) {
1575                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1576                             (unsigned long long) info->basic_rates);
1577         }
1578
1579         if (changed & BSS_CHANGED_TXPOWER)
1580                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1581 }
1582
1583 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1584                                   struct ieee80211_vif *vif,
1585                                   struct ieee80211_sta *sta)
1586 {
1587         hwsim_check_magic(vif);
1588         hwsim_set_sta_magic(sta);
1589
1590         return 0;
1591 }
1592
1593 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1594                                      struct ieee80211_vif *vif,
1595                                      struct ieee80211_sta *sta)
1596 {
1597         hwsim_check_magic(vif);
1598         hwsim_clear_sta_magic(sta);
1599
1600         return 0;
1601 }
1602
1603 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1604                                       struct ieee80211_vif *vif,
1605                                       enum sta_notify_cmd cmd,
1606                                       struct ieee80211_sta *sta)
1607 {
1608         hwsim_check_magic(vif);
1609
1610         switch (cmd) {
1611         case STA_NOTIFY_SLEEP:
1612         case STA_NOTIFY_AWAKE:
1613                 /* TODO: make good use of these flags */
1614                 break;
1615         default:
1616                 WARN(1, "Invalid sta notify: %d\n", cmd);
1617                 break;
1618         }
1619 }
1620
1621 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1622                                   struct ieee80211_sta *sta,
1623                                   bool set)
1624 {
1625         hwsim_check_sta_magic(sta);
1626         return 0;
1627 }
1628
1629 static int mac80211_hwsim_conf_tx(
1630         struct ieee80211_hw *hw,
1631         struct ieee80211_vif *vif, u16 queue,
1632         const struct ieee80211_tx_queue_params *params)
1633 {
1634         wiphy_debug(hw->wiphy,
1635                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1636                     __func__, queue,
1637                     params->txop, params->cw_min,
1638                     params->cw_max, params->aifs);
1639         return 0;
1640 }
1641
1642 static int mac80211_hwsim_get_survey(
1643         struct ieee80211_hw *hw, int idx,
1644         struct survey_info *survey)
1645 {
1646         struct ieee80211_conf *conf = &hw->conf;
1647
1648         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1649
1650         if (idx != 0)
1651                 return -ENOENT;
1652
1653         /* Current channel */
1654         survey->channel = conf->chandef.chan;
1655
1656         /*
1657          * Magically conjured noise level --- this is only ok for simulated hardware.
1658          *
1659          * A real driver which cannot determine the real channel noise MUST NOT
1660          * report any noise, especially not a magically conjured one :-)
1661          */
1662         survey->filled = SURVEY_INFO_NOISE_DBM;
1663         survey->noise = -92;
1664
1665         return 0;
1666 }
1667
1668 #ifdef CONFIG_NL80211_TESTMODE
1669 /*
1670  * This section contains example code for using netlink
1671  * attributes with the testmode command in nl80211.
1672  */
1673
1674 /* These enums need to be kept in sync with userspace */
1675 enum hwsim_testmode_attr {
1676         __HWSIM_TM_ATTR_INVALID = 0,
1677         HWSIM_TM_ATTR_CMD       = 1,
1678         HWSIM_TM_ATTR_PS        = 2,
1679
1680         /* keep last */
1681         __HWSIM_TM_ATTR_AFTER_LAST,
1682         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1683 };
1684
1685 enum hwsim_testmode_cmd {
1686         HWSIM_TM_CMD_SET_PS             = 0,
1687         HWSIM_TM_CMD_GET_PS             = 1,
1688         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1689         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1690 };
1691
1692 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1693         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1694         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1695 };
1696
1697 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1698                                        struct ieee80211_vif *vif,
1699                                        void *data, int len)
1700 {
1701         struct mac80211_hwsim_data *hwsim = hw->priv;
1702         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1703         struct sk_buff *skb;
1704         int err, ps;
1705
1706         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1707                         hwsim_testmode_policy);
1708         if (err)
1709                 return err;
1710
1711         if (!tb[HWSIM_TM_ATTR_CMD])
1712                 return -EINVAL;
1713
1714         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1715         case HWSIM_TM_CMD_SET_PS:
1716                 if (!tb[HWSIM_TM_ATTR_PS])
1717                         return -EINVAL;
1718                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1719                 return hwsim_fops_ps_write(hwsim, ps);
1720         case HWSIM_TM_CMD_GET_PS:
1721                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1722                                                 nla_total_size(sizeof(u32)));
1723                 if (!skb)
1724                         return -ENOMEM;
1725                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1726                         goto nla_put_failure;
1727                 return cfg80211_testmode_reply(skb);
1728         case HWSIM_TM_CMD_STOP_QUEUES:
1729                 ieee80211_stop_queues(hw);
1730                 return 0;
1731         case HWSIM_TM_CMD_WAKE_QUEUES:
1732                 ieee80211_wake_queues(hw);
1733                 return 0;
1734         default:
1735                 return -EOPNOTSUPP;
1736         }
1737
1738  nla_put_failure:
1739         kfree_skb(skb);
1740         return -ENOBUFS;
1741 }
1742 #endif
1743
1744 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1745                                        struct ieee80211_vif *vif,
1746                                        enum ieee80211_ampdu_mlme_action action,
1747                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1748                                        u8 buf_size)
1749 {
1750         switch (action) {
1751         case IEEE80211_AMPDU_TX_START:
1752                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1753                 break;
1754         case IEEE80211_AMPDU_TX_STOP_CONT:
1755         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1756         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1757                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1758                 break;
1759         case IEEE80211_AMPDU_TX_OPERATIONAL:
1760                 break;
1761         case IEEE80211_AMPDU_RX_START:
1762         case IEEE80211_AMPDU_RX_STOP:
1763                 break;
1764         default:
1765                 return -EOPNOTSUPP;
1766         }
1767
1768         return 0;
1769 }
1770
1771 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1772                                  struct ieee80211_vif *vif,
1773                                  u32 queues, bool drop)
1774 {
1775         /* Not implemented, queues only on kernel side */
1776 }
1777
1778 static void hw_scan_work(struct work_struct *work)
1779 {
1780         struct mac80211_hwsim_data *hwsim =
1781                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1782         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1783         int dwell, i;
1784
1785         mutex_lock(&hwsim->mutex);
1786         if (hwsim->scan_chan_idx >= req->n_channels) {
1787                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1788                 ieee80211_scan_completed(hwsim->hw, false);
1789                 hwsim->hw_scan_request = NULL;
1790                 hwsim->hw_scan_vif = NULL;
1791                 hwsim->tmp_chan = NULL;
1792                 mutex_unlock(&hwsim->mutex);
1793                 return;
1794         }
1795
1796         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1797                     req->channels[hwsim->scan_chan_idx]->center_freq);
1798
1799         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1800         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1801             !req->n_ssids) {
1802                 dwell = 120;
1803         } else {
1804                 dwell = 30;
1805                 /* send probes */
1806                 for (i = 0; i < req->n_ssids; i++) {
1807                         struct sk_buff *probe;
1808
1809                         probe = ieee80211_probereq_get(hwsim->hw,
1810                                                        hwsim->scan_addr,
1811                                                        req->ssids[i].ssid,
1812                                                        req->ssids[i].ssid_len,
1813                                                        req->ie_len);
1814                         if (!probe)
1815                                 continue;
1816
1817                         if (req->ie_len)
1818                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1819                                        req->ie_len);
1820
1821                         local_bh_disable();
1822                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1823                                                 hwsim->tmp_chan);
1824                         local_bh_enable();
1825                 }
1826         }
1827         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1828                                      msecs_to_jiffies(dwell));
1829         hwsim->scan_chan_idx++;
1830         mutex_unlock(&hwsim->mutex);
1831 }
1832
1833 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1834                                   struct ieee80211_vif *vif,
1835                                   struct ieee80211_scan_request *hw_req)
1836 {
1837         struct mac80211_hwsim_data *hwsim = hw->priv;
1838         struct cfg80211_scan_request *req = &hw_req->req;
1839
1840         mutex_lock(&hwsim->mutex);
1841         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1842                 mutex_unlock(&hwsim->mutex);
1843                 return -EBUSY;
1844         }
1845         hwsim->hw_scan_request = req;
1846         hwsim->hw_scan_vif = vif;
1847         hwsim->scan_chan_idx = 0;
1848         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1849                 get_random_mask_addr(hwsim->scan_addr,
1850                                      hw_req->req.mac_addr,
1851                                      hw_req->req.mac_addr_mask);
1852         else
1853                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1854         mutex_unlock(&hwsim->mutex);
1855
1856         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1857
1858         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1859
1860         return 0;
1861 }
1862
1863 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1864                                           struct ieee80211_vif *vif)
1865 {
1866         struct mac80211_hwsim_data *hwsim = hw->priv;
1867
1868         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1869
1870         cancel_delayed_work_sync(&hwsim->hw_scan);
1871
1872         mutex_lock(&hwsim->mutex);
1873         ieee80211_scan_completed(hwsim->hw, true);
1874         hwsim->tmp_chan = NULL;
1875         hwsim->hw_scan_request = NULL;
1876         hwsim->hw_scan_vif = NULL;
1877         mutex_unlock(&hwsim->mutex);
1878 }
1879
1880 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1881                                    struct ieee80211_vif *vif,
1882                                    const u8 *mac_addr)
1883 {
1884         struct mac80211_hwsim_data *hwsim = hw->priv;
1885
1886         mutex_lock(&hwsim->mutex);
1887
1888         if (hwsim->scanning) {
1889                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1890                 goto out;
1891         }
1892
1893         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1894
1895         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1896         hwsim->scanning = true;
1897
1898 out:
1899         mutex_unlock(&hwsim->mutex);
1900 }
1901
1902 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
1903                                             struct ieee80211_vif *vif)
1904 {
1905         struct mac80211_hwsim_data *hwsim = hw->priv;
1906
1907         mutex_lock(&hwsim->mutex);
1908
1909         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1910         hwsim->scanning = false;
1911         memset(hwsim->scan_addr, 0, ETH_ALEN);
1912
1913         mutex_unlock(&hwsim->mutex);
1914 }
1915
1916 static void hw_roc_done(struct work_struct *work)
1917 {
1918         struct mac80211_hwsim_data *hwsim =
1919                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1920
1921         mutex_lock(&hwsim->mutex);
1922         ieee80211_remain_on_channel_expired(hwsim->hw);
1923         hwsim->tmp_chan = NULL;
1924         mutex_unlock(&hwsim->mutex);
1925
1926         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1927 }
1928
1929 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1930                               struct ieee80211_vif *vif,
1931                               struct ieee80211_channel *chan,
1932                               int duration,
1933                               enum ieee80211_roc_type type)
1934 {
1935         struct mac80211_hwsim_data *hwsim = hw->priv;
1936
1937         mutex_lock(&hwsim->mutex);
1938         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1939                 mutex_unlock(&hwsim->mutex);
1940                 return -EBUSY;
1941         }
1942
1943         hwsim->tmp_chan = chan;
1944         mutex_unlock(&hwsim->mutex);
1945
1946         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1947                     chan->center_freq, duration);
1948
1949         ieee80211_ready_on_channel(hw);
1950
1951         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1952                                      msecs_to_jiffies(duration));
1953         return 0;
1954 }
1955
1956 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1957 {
1958         struct mac80211_hwsim_data *hwsim = hw->priv;
1959
1960         cancel_delayed_work_sync(&hwsim->roc_done);
1961
1962         mutex_lock(&hwsim->mutex);
1963         hwsim->tmp_chan = NULL;
1964         mutex_unlock(&hwsim->mutex);
1965
1966         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1967
1968         return 0;
1969 }
1970
1971 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1972                                       struct ieee80211_chanctx_conf *ctx)
1973 {
1974         hwsim_set_chanctx_magic(ctx);
1975         wiphy_debug(hw->wiphy,
1976                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1977                     ctx->def.chan->center_freq, ctx->def.width,
1978                     ctx->def.center_freq1, ctx->def.center_freq2);
1979         return 0;
1980 }
1981
1982 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1983                                           struct ieee80211_chanctx_conf *ctx)
1984 {
1985         wiphy_debug(hw->wiphy,
1986                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1987                     ctx->def.chan->center_freq, ctx->def.width,
1988                     ctx->def.center_freq1, ctx->def.center_freq2);
1989         hwsim_check_chanctx_magic(ctx);
1990         hwsim_clear_chanctx_magic(ctx);
1991 }
1992
1993 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1994                                           struct ieee80211_chanctx_conf *ctx,
1995                                           u32 changed)
1996 {
1997         hwsim_check_chanctx_magic(ctx);
1998         wiphy_debug(hw->wiphy,
1999                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2000                     ctx->def.chan->center_freq, ctx->def.width,
2001                     ctx->def.center_freq1, ctx->def.center_freq2);
2002 }
2003
2004 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2005                                              struct ieee80211_vif *vif,
2006                                              struct ieee80211_chanctx_conf *ctx)
2007 {
2008         hwsim_check_magic(vif);
2009         hwsim_check_chanctx_magic(ctx);
2010
2011         return 0;
2012 }
2013
2014 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2015                                                 struct ieee80211_vif *vif,
2016                                                 struct ieee80211_chanctx_conf *ctx)
2017 {
2018         hwsim_check_magic(vif);
2019         hwsim_check_chanctx_magic(ctx);
2020 }
2021
2022 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2023         "tx_pkts_nic",
2024         "tx_bytes_nic",
2025         "rx_pkts_nic",
2026         "rx_bytes_nic",
2027         "d_tx_dropped",
2028         "d_tx_failed",
2029         "d_ps_mode",
2030         "d_group",
2031         "d_tx_power",
2032 };
2033
2034 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2035
2036 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2037                                           struct ieee80211_vif *vif,
2038                                           u32 sset, u8 *data)
2039 {
2040         if (sset == ETH_SS_STATS)
2041                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2042                        sizeof(mac80211_hwsim_gstrings_stats));
2043 }
2044
2045 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2046                                             struct ieee80211_vif *vif, int sset)
2047 {
2048         if (sset == ETH_SS_STATS)
2049                 return MAC80211_HWSIM_SSTATS_LEN;
2050         return 0;
2051 }
2052
2053 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2054                                         struct ieee80211_vif *vif,
2055                                         struct ethtool_stats *stats, u64 *data)
2056 {
2057         struct mac80211_hwsim_data *ar = hw->priv;
2058         int i = 0;
2059
2060         data[i++] = ar->tx_pkts;
2061         data[i++] = ar->tx_bytes;
2062         data[i++] = ar->rx_pkts;
2063         data[i++] = ar->rx_bytes;
2064         data[i++] = ar->tx_dropped;
2065         data[i++] = ar->tx_failed;
2066         data[i++] = ar->ps;
2067         data[i++] = ar->group;
2068         data[i++] = ar->power_level;
2069
2070         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2071 }
2072
2073 static const struct ieee80211_ops mac80211_hwsim_ops = {
2074         .tx = mac80211_hwsim_tx,
2075         .start = mac80211_hwsim_start,
2076         .stop = mac80211_hwsim_stop,
2077         .add_interface = mac80211_hwsim_add_interface,
2078         .change_interface = mac80211_hwsim_change_interface,
2079         .remove_interface = mac80211_hwsim_remove_interface,
2080         .config = mac80211_hwsim_config,
2081         .configure_filter = mac80211_hwsim_configure_filter,
2082         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2083         .sta_add = mac80211_hwsim_sta_add,
2084         .sta_remove = mac80211_hwsim_sta_remove,
2085         .sta_notify = mac80211_hwsim_sta_notify,
2086         .set_tim = mac80211_hwsim_set_tim,
2087         .conf_tx = mac80211_hwsim_conf_tx,
2088         .get_survey = mac80211_hwsim_get_survey,
2089         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2090         .ampdu_action = mac80211_hwsim_ampdu_action,
2091         .sw_scan_start = mac80211_hwsim_sw_scan,
2092         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2093         .flush = mac80211_hwsim_flush,
2094         .get_tsf = mac80211_hwsim_get_tsf,
2095         .set_tsf = mac80211_hwsim_set_tsf,
2096         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2097         .get_et_stats = mac80211_hwsim_get_et_stats,
2098         .get_et_strings = mac80211_hwsim_get_et_strings,
2099 };
2100
2101 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2102
2103 struct hwsim_new_radio_params {
2104         unsigned int channels;
2105         const char *reg_alpha2;
2106         const struct ieee80211_regdomain *regd;
2107         bool reg_strict;
2108         bool p2p_device;
2109         bool use_chanctx;
2110         bool destroy_on_close;
2111         const char *hwname;
2112         bool no_vif;
2113 };
2114
2115 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2116                                    struct genl_info *info)
2117 {
2118         if (info)
2119                 genl_notify(&hwsim_genl_family, mcast_skb,
2120                             genl_info_net(info), info->snd_portid,
2121                             HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
2122         else
2123                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2124                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2125 }
2126
2127 static int append_radio_msg(struct sk_buff *skb, int id,
2128                             struct hwsim_new_radio_params *param)
2129 {
2130         int ret;
2131
2132         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2133         if (ret < 0)
2134                 return ret;
2135
2136         if (param->channels) {
2137                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2138                 if (ret < 0)
2139                         return ret;
2140         }
2141
2142         if (param->reg_alpha2) {
2143                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2144                               param->reg_alpha2);
2145                 if (ret < 0)
2146                         return ret;
2147         }
2148
2149         if (param->regd) {
2150                 int i;
2151
2152                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2153                         if (hwsim_world_regdom_custom[i] != param->regd)
2154                                 continue;
2155
2156                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2157                         if (ret < 0)
2158                                 return ret;
2159                         break;
2160                 }
2161         }
2162
2163         if (param->reg_strict) {
2164                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2165                 if (ret < 0)
2166                         return ret;
2167         }
2168
2169         if (param->p2p_device) {
2170                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2171                 if (ret < 0)
2172                         return ret;
2173         }
2174
2175         if (param->use_chanctx) {
2176                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2177                 if (ret < 0)
2178                         return ret;
2179         }
2180
2181         if (param->hwname) {
2182                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2183                               strlen(param->hwname), param->hwname);
2184                 if (ret < 0)
2185                         return ret;
2186         }
2187
2188         return 0;
2189 }
2190
2191 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2192                                   struct hwsim_new_radio_params *param)
2193 {
2194         struct sk_buff *mcast_skb;
2195         void *data;
2196
2197         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2198         if (!mcast_skb)
2199                 return;
2200
2201         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2202                            HWSIM_CMD_NEW_RADIO);
2203         if (!data)
2204                 goto out_err;
2205
2206         if (append_radio_msg(mcast_skb, id, param) < 0)
2207                 goto out_err;
2208
2209         genlmsg_end(mcast_skb, data);
2210
2211         hwsim_mcast_config_msg(mcast_skb, info);
2212         return;
2213
2214 out_err:
2215         genlmsg_cancel(mcast_skb, data);
2216         nlmsg_free(mcast_skb);
2217 }
2218
2219 static int mac80211_hwsim_new_radio(struct genl_info *info,
2220                                     struct hwsim_new_radio_params *param)
2221 {
2222         int err;
2223         u8 addr[ETH_ALEN];
2224         struct mac80211_hwsim_data *data;
2225         struct ieee80211_hw *hw;
2226         enum ieee80211_band band;
2227         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2228         int idx;
2229
2230         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2231                 return -EINVAL;
2232
2233         spin_lock_bh(&hwsim_radio_lock);
2234         idx = hwsim_radio_idx++;
2235         spin_unlock_bh(&hwsim_radio_lock);
2236
2237         if (param->use_chanctx)
2238                 ops = &mac80211_hwsim_mchan_ops;
2239         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2240         if (!hw) {
2241                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2242                 err = -ENOMEM;
2243                 goto failed;
2244         }
2245         data = hw->priv;
2246         data->hw = hw;
2247
2248         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2249         if (IS_ERR(data->dev)) {
2250                 printk(KERN_DEBUG
2251                        "mac80211_hwsim: device_create failed (%ld)\n",
2252                        PTR_ERR(data->dev));
2253                 err = -ENOMEM;
2254                 goto failed_drvdata;
2255         }
2256         data->dev->driver = &mac80211_hwsim_driver.driver;
2257         err = device_bind_driver(data->dev);
2258         if (err != 0) {
2259                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2260                        err);
2261                 goto failed_bind;
2262         }
2263
2264         skb_queue_head_init(&data->pending);
2265
2266         SET_IEEE80211_DEV(hw, data->dev);
2267         memset(addr, 0, ETH_ALEN);
2268         addr[0] = 0x02;
2269         addr[3] = idx >> 8;
2270         addr[4] = idx;
2271         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2272         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2273         data->addresses[1].addr[0] |= 0x40;
2274         hw->wiphy->n_addresses = 2;
2275         hw->wiphy->addresses = data->addresses;
2276
2277         data->channels = param->channels;
2278         data->use_chanctx = param->use_chanctx;
2279         data->idx = idx;
2280         data->destroy_on_close = param->destroy_on_close;
2281         if (info)
2282                 data->portid = info->snd_portid;
2283
2284         if (data->use_chanctx) {
2285                 hw->wiphy->max_scan_ssids = 255;
2286                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2287                 hw->wiphy->max_remain_on_channel_duration = 1000;
2288                 /* For channels > 1 DFS is not allowed */
2289                 hw->wiphy->n_iface_combinations = 1;
2290                 hw->wiphy->iface_combinations = &data->if_combination;
2291                 if (param->p2p_device)
2292                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2293                 else
2294                         data->if_combination = hwsim_if_comb[0];
2295                 data->if_combination.num_different_channels = data->channels;
2296         } else if (param->p2p_device) {
2297                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2298                 hw->wiphy->n_iface_combinations =
2299                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2300         } else {
2301                 hw->wiphy->iface_combinations = hwsim_if_comb;
2302                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2303         }
2304
2305         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2306         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2307
2308         hw->queues = 5;
2309         hw->offchannel_tx_hw_queue = 4;
2310         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2311                                      BIT(NL80211_IFTYPE_AP) |
2312                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2313                                      BIT(NL80211_IFTYPE_P2P_GO) |
2314                                      BIT(NL80211_IFTYPE_ADHOC) |
2315                                      BIT(NL80211_IFTYPE_MESH_POINT);
2316
2317         if (param->p2p_device)
2318                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2319
2320         hw->flags = IEEE80211_HW_MFP_CAPABLE |
2321                     IEEE80211_HW_SIGNAL_DBM |
2322                     IEEE80211_HW_AMPDU_AGGREGATION |
2323                     IEEE80211_HW_WANT_MONITOR_VIF |
2324                     IEEE80211_HW_QUEUE_CONTROL |
2325                     IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2326                     IEEE80211_HW_CHANCTX_STA_CSA;
2327         if (rctbl)
2328                 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2329
2330         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2331                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2332                             WIPHY_FLAG_AP_UAPSD |
2333                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2334         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2335                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2336                                NL80211_FEATURE_STATIC_SMPS |
2337                                NL80211_FEATURE_DYNAMIC_SMPS |
2338                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2339
2340         /* ask mac80211 to reserve space for magic */
2341         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2342         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2343         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2344
2345         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2346                 sizeof(hwsim_channels_2ghz));
2347         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2348                 sizeof(hwsim_channels_5ghz));
2349         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2350
2351         for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2352                 struct ieee80211_supported_band *sband = &data->bands[band];
2353                 switch (band) {
2354                 case IEEE80211_BAND_2GHZ:
2355                         sband->channels = data->channels_2ghz;
2356                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2357                         sband->bitrates = data->rates;
2358                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2359                         break;
2360                 case IEEE80211_BAND_5GHZ:
2361                         sband->channels = data->channels_5ghz;
2362                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2363                         sband->bitrates = data->rates + 4;
2364                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2365                         break;
2366                 default:
2367                         continue;
2368                 }
2369
2370                 sband->ht_cap.ht_supported = true;
2371                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2372                                     IEEE80211_HT_CAP_GRN_FLD |
2373                                     IEEE80211_HT_CAP_SGI_20 |
2374                                     IEEE80211_HT_CAP_SGI_40 |
2375                                     IEEE80211_HT_CAP_DSSSCCK40;
2376                 sband->ht_cap.ampdu_factor = 0x3;
2377                 sband->ht_cap.ampdu_density = 0x6;
2378                 memset(&sband->ht_cap.mcs, 0,
2379                        sizeof(sband->ht_cap.mcs));
2380                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2381                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2382                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2383
2384                 hw->wiphy->bands[band] = sband;
2385
2386                 sband->vht_cap.vht_supported = true;
2387                 sband->vht_cap.cap =
2388                         IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2389                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2390                         IEEE80211_VHT_CAP_RXLDPC |
2391                         IEEE80211_VHT_CAP_SHORT_GI_80 |
2392                         IEEE80211_VHT_CAP_SHORT_GI_160 |
2393                         IEEE80211_VHT_CAP_TXSTBC |
2394                         IEEE80211_VHT_CAP_RXSTBC_1 |
2395                         IEEE80211_VHT_CAP_RXSTBC_2 |
2396                         IEEE80211_VHT_CAP_RXSTBC_3 |
2397                         IEEE80211_VHT_CAP_RXSTBC_4 |
2398                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2399                 sband->vht_cap.vht_mcs.rx_mcs_map =
2400                         cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2401                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2402                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2403                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2404                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2405                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2406                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2407                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2408                 sband->vht_cap.vht_mcs.tx_mcs_map =
2409                         sband->vht_cap.vht_mcs.rx_mcs_map;
2410         }
2411
2412         /* By default all radios belong to the first group */
2413         data->group = 1;
2414         mutex_init(&data->mutex);
2415
2416         /* Enable frame retransmissions for lossy channels */
2417         hw->max_rates = 4;
2418         hw->max_rate_tries = 11;
2419
2420         if (param->reg_strict)
2421                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2422         if (param->regd) {
2423                 data->regd = param->regd;
2424                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2425                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2426                 /* give the regulatory workqueue a chance to run */
2427                 schedule_timeout_interruptible(1);
2428         }
2429
2430         if (param->no_vif)
2431                 hw->flags |= IEEE80211_HW_NO_AUTO_VIF;
2432
2433         err = ieee80211_register_hw(hw);
2434         if (err < 0) {
2435                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2436                        err);
2437                 goto failed_hw;
2438         }
2439
2440         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2441
2442         if (param->reg_alpha2) {
2443                 data->alpha2[0] = param->reg_alpha2[0];
2444                 data->alpha2[1] = param->reg_alpha2[1];
2445                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2446         }
2447
2448         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2449         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2450         debugfs_create_file("group", 0666, data->debugfs, data,
2451                             &hwsim_fops_group);
2452         if (!data->use_chanctx)
2453                 debugfs_create_file("dfs_simulate_radar", 0222,
2454                                     data->debugfs,
2455                                     data, &hwsim_simulate_radar);
2456
2457         tasklet_hrtimer_init(&data->beacon_timer,
2458                              mac80211_hwsim_beacon,
2459                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2460
2461         spin_lock_bh(&hwsim_radio_lock);
2462         list_add_tail(&data->list, &hwsim_radios);
2463         spin_unlock_bh(&hwsim_radio_lock);
2464
2465         if (idx > 0)
2466                 hwsim_mcast_new_radio(idx, info, param);
2467
2468         return idx;
2469
2470 failed_hw:
2471         device_release_driver(data->dev);
2472 failed_bind:
2473         device_unregister(data->dev);
2474 failed_drvdata:
2475         ieee80211_free_hw(hw);
2476 failed:
2477         return err;
2478 }
2479
2480 static void hwsim_mcast_del_radio(int id, const char *hwname,
2481                                   struct genl_info *info)
2482 {
2483         struct sk_buff *skb;
2484         void *data;
2485         int ret;
2486
2487         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2488         if (!skb)
2489                 return;
2490
2491         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2492                            HWSIM_CMD_DEL_RADIO);
2493         if (!data)
2494                 goto error;
2495
2496         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2497         if (ret < 0)
2498                 goto error;
2499
2500         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2501                       hwname);
2502         if (ret < 0)
2503                 goto error;
2504
2505         genlmsg_end(skb, data);
2506
2507         hwsim_mcast_config_msg(skb, info);
2508
2509         return;
2510
2511 error:
2512         nlmsg_free(skb);
2513 }
2514
2515 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2516                                      const char *hwname,
2517                                      struct genl_info *info)
2518 {
2519         hwsim_mcast_del_radio(data->idx, hwname, info);
2520         debugfs_remove_recursive(data->debugfs);
2521         ieee80211_unregister_hw(data->hw);
2522         device_release_driver(data->dev);
2523         device_unregister(data->dev);
2524         ieee80211_free_hw(data->hw);
2525 }
2526
2527 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2528                                     struct mac80211_hwsim_data *data,
2529                                     u32 portid, u32 seq,
2530                                     struct netlink_callback *cb, int flags)
2531 {
2532         void *hdr;
2533         struct hwsim_new_radio_params param = { };
2534         int res = -EMSGSIZE;
2535
2536         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2537                           HWSIM_CMD_GET_RADIO);
2538         if (!hdr)
2539                 return -EMSGSIZE;
2540
2541         if (cb)
2542                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2543
2544         if (data->alpha2[0] && data->alpha2[1])
2545                 param.reg_alpha2 = data->alpha2;
2546
2547         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2548                                         REGULATORY_STRICT_REG);
2549         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2550                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2551         param.use_chanctx = data->use_chanctx;
2552         param.regd = data->regd;
2553         param.channels = data->channels;
2554         param.hwname = wiphy_name(data->hw->wiphy);
2555
2556         res = append_radio_msg(skb, data->idx, &param);
2557         if (res < 0)
2558                 goto out_err;
2559
2560         return genlmsg_end(skb, hdr);
2561
2562 out_err:
2563         genlmsg_cancel(skb, hdr);
2564         return res;
2565 }
2566
2567 static void mac80211_hwsim_free(void)
2568 {
2569         struct mac80211_hwsim_data *data;
2570
2571         spin_lock_bh(&hwsim_radio_lock);
2572         while ((data = list_first_entry_or_null(&hwsim_radios,
2573                                                 struct mac80211_hwsim_data,
2574                                                 list))) {
2575                 list_del(&data->list);
2576                 spin_unlock_bh(&hwsim_radio_lock);
2577                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2578                                          NULL);
2579                 spin_lock_bh(&hwsim_radio_lock);
2580         }
2581         spin_unlock_bh(&hwsim_radio_lock);
2582         class_destroy(hwsim_class);
2583 }
2584
2585 static const struct net_device_ops hwsim_netdev_ops = {
2586         .ndo_start_xmit         = hwsim_mon_xmit,
2587         .ndo_change_mtu         = eth_change_mtu,
2588         .ndo_set_mac_address    = eth_mac_addr,
2589         .ndo_validate_addr      = eth_validate_addr,
2590 };
2591
2592 static void hwsim_mon_setup(struct net_device *dev)
2593 {
2594         dev->netdev_ops = &hwsim_netdev_ops;
2595         dev->destructor = free_netdev;
2596         ether_setup(dev);
2597         dev->tx_queue_len = 0;
2598         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2599         memset(dev->dev_addr, 0, ETH_ALEN);
2600         dev->dev_addr[0] = 0x12;
2601 }
2602
2603 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2604 {
2605         struct mac80211_hwsim_data *data;
2606         bool _found = false;
2607
2608         spin_lock_bh(&hwsim_radio_lock);
2609         list_for_each_entry(data, &hwsim_radios, list) {
2610                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2611                         _found = true;
2612                         break;
2613                 }
2614         }
2615         spin_unlock_bh(&hwsim_radio_lock);
2616
2617         if (!_found)
2618                 return NULL;
2619
2620         return data;
2621 }
2622
2623 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2624                                            struct genl_info *info)
2625 {
2626
2627         struct ieee80211_hdr *hdr;
2628         struct mac80211_hwsim_data *data2;
2629         struct ieee80211_tx_info *txi;
2630         struct hwsim_tx_rate *tx_attempts;
2631         unsigned long ret_skb_ptr;
2632         struct sk_buff *skb, *tmp;
2633         const u8 *src;
2634         unsigned int hwsim_flags;
2635         int i;
2636         bool found = false;
2637
2638         if (info->snd_portid != wmediumd_portid)
2639                 return -EINVAL;
2640
2641         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2642             !info->attrs[HWSIM_ATTR_FLAGS] ||
2643             !info->attrs[HWSIM_ATTR_COOKIE] ||
2644             !info->attrs[HWSIM_ATTR_TX_INFO])
2645                 goto out;
2646
2647         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2648         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2649         ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2650
2651         data2 = get_hwsim_data_ref_from_addr(src);
2652         if (!data2)
2653                 goto out;
2654
2655         /* look for the skb matching the cookie passed back from user */
2656         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2657                 if ((unsigned long)skb == ret_skb_ptr) {
2658                         skb_unlink(skb, &data2->pending);
2659                         found = true;
2660                         break;
2661                 }
2662         }
2663
2664         /* not found */
2665         if (!found)
2666                 goto out;
2667
2668         /* Tx info received because the frame was broadcasted on user space,
2669          so we get all the necessary info: tx attempts and skb control buff */
2670
2671         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2672                        info->attrs[HWSIM_ATTR_TX_INFO]);
2673
2674         /* now send back TX status */
2675         txi = IEEE80211_SKB_CB(skb);
2676
2677         ieee80211_tx_info_clear_status(txi);
2678
2679         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2680                 txi->status.rates[i].idx = tx_attempts[i].idx;
2681                 txi->status.rates[i].count = tx_attempts[i].count;
2682                 /*txi->status.rates[i].flags = 0;*/
2683         }
2684
2685         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2686
2687         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2688            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2689                 if (skb->len >= 16) {
2690                         hdr = (struct ieee80211_hdr *) skb->data;
2691                         mac80211_hwsim_monitor_ack(data2->channel,
2692                                                    hdr->addr2);
2693                 }
2694                 txi->flags |= IEEE80211_TX_STAT_ACK;
2695         }
2696         ieee80211_tx_status_irqsafe(data2->hw, skb);
2697         return 0;
2698 out:
2699         return -EINVAL;
2700
2701 }
2702
2703 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2704                                           struct genl_info *info)
2705 {
2706         struct mac80211_hwsim_data *data2;
2707         struct ieee80211_rx_status rx_status;
2708         const u8 *dst;
2709         int frame_data_len;
2710         void *frame_data;
2711         struct sk_buff *skb = NULL;
2712
2713         if (info->snd_portid != wmediumd_portid)
2714                 return -EINVAL;
2715
2716         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2717             !info->attrs[HWSIM_ATTR_FRAME] ||
2718             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2719             !info->attrs[HWSIM_ATTR_SIGNAL])
2720                 goto out;
2721
2722         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2723         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2724         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2725
2726         /* Allocate new skb here */
2727         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2728         if (skb == NULL)
2729                 goto err;
2730
2731         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2732                 goto err;
2733
2734         /* Copy the data */
2735         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2736
2737         data2 = get_hwsim_data_ref_from_addr(dst);
2738         if (!data2)
2739                 goto out;
2740
2741         /* check if radio is configured properly */
2742
2743         if (data2->idle || !data2->started)
2744                 goto out;
2745
2746         /* A frame is received from user space */
2747         memset(&rx_status, 0, sizeof(rx_status));
2748         /* TODO: Check ATTR_FREQ if it exists, and maybe throw away off-channel
2749          * packets?
2750          */
2751         rx_status.freq = data2->channel->center_freq;
2752         rx_status.band = data2->channel->band;
2753         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
2754         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2755
2756         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
2757         data2->rx_pkts++;
2758         data2->rx_bytes += skb->len;
2759         ieee80211_rx_irqsafe(data2->hw, skb);
2760
2761         return 0;
2762 err:
2763         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
2764 out:
2765         dev_kfree_skb(skb);
2766         return -EINVAL;
2767 }
2768
2769 static int hwsim_register_received_nl(struct sk_buff *skb_2,
2770                                       struct genl_info *info)
2771 {
2772         struct mac80211_hwsim_data *data;
2773         int chans = 1;
2774
2775         spin_lock_bh(&hwsim_radio_lock);
2776         list_for_each_entry(data, &hwsim_radios, list)
2777                 chans = max(chans, data->channels);
2778         spin_unlock_bh(&hwsim_radio_lock);
2779
2780         /* In the future we should revise the userspace API and allow it
2781          * to set a flag that it does support multi-channel, then we can
2782          * let this pass conditionally on the flag.
2783          * For current userspace, prohibit it since it won't work right.
2784          */
2785         if (chans > 1)
2786                 return -EOPNOTSUPP;
2787
2788         if (wmediumd_portid)
2789                 return -EBUSY;
2790
2791         wmediumd_portid = info->snd_portid;
2792
2793         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
2794                "switching to wmediumd mode with pid %d\n", info->snd_portid);
2795
2796         return 0;
2797 }
2798
2799 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
2800 {
2801         struct hwsim_new_radio_params param = { 0 };
2802
2803         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
2804         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
2805         param.channels = channels;
2806         param.destroy_on_close =
2807                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
2808
2809         if (info->attrs[HWSIM_ATTR_CHANNELS])
2810                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
2811
2812         if (info->attrs[HWSIM_ATTR_NO_VIF])
2813                 param.no_vif = true;
2814
2815         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2816                 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2817
2818         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
2819                 param.use_chanctx = true;
2820         else
2821                 param.use_chanctx = (param.channels > 1);
2822
2823         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
2824                 param.reg_alpha2 =
2825                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
2826
2827         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
2828                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
2829
2830                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
2831                         return -EINVAL;
2832                 param.regd = hwsim_world_regdom_custom[idx];
2833         }
2834
2835         return mac80211_hwsim_new_radio(info, &param);
2836 }
2837
2838 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
2839 {
2840         struct mac80211_hwsim_data *data;
2841         s64 idx = -1;
2842         const char *hwname = NULL;
2843
2844         if (info->attrs[HWSIM_ATTR_RADIO_ID])
2845                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2846         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
2847                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
2848         else
2849                 return -EINVAL;
2850
2851         spin_lock_bh(&hwsim_radio_lock);
2852         list_for_each_entry(data, &hwsim_radios, list) {
2853                 if (idx >= 0) {
2854                         if (data->idx != idx)
2855                                 continue;
2856                 } else {
2857                         if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
2858                                 continue;
2859                 }
2860
2861                 list_del(&data->list);
2862                 spin_unlock_bh(&hwsim_radio_lock);
2863                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2864                                          info);
2865                 return 0;
2866         }
2867         spin_unlock_bh(&hwsim_radio_lock);
2868
2869         return -ENODEV;
2870 }
2871
2872 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
2873 {
2874         struct mac80211_hwsim_data *data;
2875         struct sk_buff *skb;
2876         int idx, res = -ENODEV;
2877
2878         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
2879                 return -EINVAL;
2880         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
2881
2882         spin_lock_bh(&hwsim_radio_lock);
2883         list_for_each_entry(data, &hwsim_radios, list) {
2884                 if (data->idx != idx)
2885                         continue;
2886
2887                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2888                 if (!skb) {
2889                         res = -ENOMEM;
2890                         goto out_err;
2891                 }
2892
2893                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
2894                                                info->snd_seq, NULL, 0);
2895                 if (res < 0) {
2896                         nlmsg_free(skb);
2897                         goto out_err;
2898                 }
2899
2900                 genlmsg_reply(skb, info);
2901                 break;
2902         }
2903
2904 out_err:
2905         spin_unlock_bh(&hwsim_radio_lock);
2906
2907         return res;
2908 }
2909
2910 static int hwsim_dump_radio_nl(struct sk_buff *skb,
2911                                struct netlink_callback *cb)
2912 {
2913         int idx = cb->args[0];
2914         struct mac80211_hwsim_data *data = NULL;
2915         int res;
2916
2917         spin_lock_bh(&hwsim_radio_lock);
2918
2919         if (idx == hwsim_radio_idx)
2920                 goto done;
2921
2922         list_for_each_entry(data, &hwsim_radios, list) {
2923                 if (data->idx < idx)
2924                         continue;
2925
2926                 res = mac80211_hwsim_get_radio(skb, data,
2927                                                NETLINK_CB(cb->skb).portid,
2928                                                cb->nlh->nlmsg_seq, cb,
2929                                                NLM_F_MULTI);
2930                 if (res < 0)
2931                         break;
2932
2933                 idx = data->idx + 1;
2934         }
2935
2936         cb->args[0] = idx;
2937
2938 done:
2939         spin_unlock_bh(&hwsim_radio_lock);
2940         return skb->len;
2941 }
2942
2943 /* Generic Netlink operations array */
2944 static const struct genl_ops hwsim_ops[] = {
2945         {
2946                 .cmd = HWSIM_CMD_REGISTER,
2947                 .policy = hwsim_genl_policy,
2948                 .doit = hwsim_register_received_nl,
2949                 .flags = GENL_ADMIN_PERM,
2950         },
2951         {
2952                 .cmd = HWSIM_CMD_FRAME,
2953                 .policy = hwsim_genl_policy,
2954                 .doit = hwsim_cloned_frame_received_nl,
2955         },
2956         {
2957                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
2958                 .policy = hwsim_genl_policy,
2959                 .doit = hwsim_tx_info_frame_received_nl,
2960         },
2961         {
2962                 .cmd = HWSIM_CMD_NEW_RADIO,
2963                 .policy = hwsim_genl_policy,
2964                 .doit = hwsim_new_radio_nl,
2965                 .flags = GENL_ADMIN_PERM,
2966         },
2967         {
2968                 .cmd = HWSIM_CMD_DEL_RADIO,
2969                 .policy = hwsim_genl_policy,
2970                 .doit = hwsim_del_radio_nl,
2971                 .flags = GENL_ADMIN_PERM,
2972         },
2973         {
2974                 .cmd = HWSIM_CMD_GET_RADIO,
2975                 .policy = hwsim_genl_policy,
2976                 .doit = hwsim_get_radio_nl,
2977                 .dumpit = hwsim_dump_radio_nl,
2978         },
2979 };
2980
2981 static void destroy_radio(struct work_struct *work)
2982 {
2983         struct mac80211_hwsim_data *data =
2984                 container_of(work, struct mac80211_hwsim_data, destroy_work);
2985
2986         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
2987 }
2988
2989 static void remove_user_radios(u32 portid)
2990 {
2991         struct mac80211_hwsim_data *entry, *tmp;
2992
2993         spin_lock_bh(&hwsim_radio_lock);
2994         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
2995                 if (entry->destroy_on_close && entry->portid == portid) {
2996                         list_del(&entry->list);
2997                         INIT_WORK(&entry->destroy_work, destroy_radio);
2998                         schedule_work(&entry->destroy_work);
2999                 }
3000         }
3001         spin_unlock_bh(&hwsim_radio_lock);
3002 }
3003
3004 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3005                                          unsigned long state,
3006                                          void *_notify)
3007 {
3008         struct netlink_notify *notify = _notify;
3009
3010         if (state != NETLINK_URELEASE)
3011                 return NOTIFY_DONE;
3012
3013         remove_user_radios(notify->portid);
3014
3015         if (notify->portid == wmediumd_portid) {
3016                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3017                        " socket, switching to perfect channel medium\n");
3018                 wmediumd_portid = 0;
3019         }
3020         return NOTIFY_DONE;
3021
3022 }
3023
3024 static struct notifier_block hwsim_netlink_notifier = {
3025         .notifier_call = mac80211_hwsim_netlink_notify,
3026 };
3027
3028 static int hwsim_init_netlink(void)
3029 {
3030         int rc;
3031
3032         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3033
3034         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3035                                                   hwsim_ops,
3036                                                   hwsim_mcgrps);
3037         if (rc)
3038                 goto failure;
3039
3040         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3041         if (rc)
3042                 goto failure;
3043
3044         return 0;
3045
3046 failure:
3047         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3048         return -EINVAL;
3049 }
3050
3051 static void hwsim_exit_netlink(void)
3052 {
3053         /* unregister the notifier */
3054         netlink_unregister_notifier(&hwsim_netlink_notifier);
3055         /* unregister the family */
3056         genl_unregister_family(&hwsim_genl_family);
3057 }
3058
3059 static int __init init_mac80211_hwsim(void)
3060 {
3061         int i, err;
3062
3063         if (radios < 0 || radios > 100)
3064                 return -EINVAL;
3065
3066         if (channels < 1)
3067                 return -EINVAL;
3068
3069         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3070         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3071         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3072         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3073         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3074         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3075         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3076         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3077         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3078         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3079         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3080                 mac80211_hwsim_assign_vif_chanctx;
3081         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3082                 mac80211_hwsim_unassign_vif_chanctx;
3083
3084         spin_lock_init(&hwsim_radio_lock);
3085         INIT_LIST_HEAD(&hwsim_radios);
3086
3087         err = platform_driver_register(&mac80211_hwsim_driver);
3088         if (err)
3089                 return err;
3090
3091         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3092         if (IS_ERR(hwsim_class)) {
3093                 err = PTR_ERR(hwsim_class);
3094                 goto out_unregister_driver;
3095         }
3096
3097         err = hwsim_init_netlink();
3098         if (err < 0)
3099                 goto out_unregister_driver;
3100
3101         for (i = 0; i < radios; i++) {
3102                 struct hwsim_new_radio_params param = { 0 };
3103
3104                 param.channels = channels;
3105
3106                 switch (regtest) {
3107                 case HWSIM_REGTEST_DIFF_COUNTRY:
3108                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3109                                 param.reg_alpha2 = hwsim_alpha2s[i];
3110                         break;
3111                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3112                         if (!i)
3113                                 param.reg_alpha2 = hwsim_alpha2s[0];
3114                         break;
3115                 case HWSIM_REGTEST_STRICT_ALL:
3116                         param.reg_strict = true;
3117                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3118                         param.reg_alpha2 = hwsim_alpha2s[0];
3119                         break;
3120                 case HWSIM_REGTEST_WORLD_ROAM:
3121                         if (i == 0)
3122                                 param.regd = &hwsim_world_regdom_custom_01;
3123                         break;
3124                 case HWSIM_REGTEST_CUSTOM_WORLD:
3125                         param.regd = &hwsim_world_regdom_custom_01;
3126                         break;
3127                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3128                         if (i == 0)
3129                                 param.regd = &hwsim_world_regdom_custom_01;
3130                         else if (i == 1)
3131                                 param.regd = &hwsim_world_regdom_custom_02;
3132                         break;
3133                 case HWSIM_REGTEST_STRICT_FOLLOW:
3134                         if (i == 0) {
3135                                 param.reg_strict = true;
3136                                 param.reg_alpha2 = hwsim_alpha2s[0];
3137                         }
3138                         break;
3139                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3140                         if (i == 0) {
3141                                 param.reg_strict = true;
3142                                 param.reg_alpha2 = hwsim_alpha2s[0];
3143                         } else if (i == 1) {
3144                                 param.reg_alpha2 = hwsim_alpha2s[1];
3145                         }
3146                         break;
3147                 case HWSIM_REGTEST_ALL:
3148                         switch (i) {
3149                         case 0:
3150                                 param.regd = &hwsim_world_regdom_custom_01;
3151                                 break;
3152                         case 1:
3153                                 param.regd = &hwsim_world_regdom_custom_02;
3154                                 break;
3155                         case 2:
3156                                 param.reg_alpha2 = hwsim_alpha2s[0];
3157                                 break;
3158                         case 3:
3159                                 param.reg_alpha2 = hwsim_alpha2s[1];
3160                                 break;
3161                         case 4:
3162                                 param.reg_strict = true;
3163                                 param.reg_alpha2 = hwsim_alpha2s[2];
3164                                 break;
3165                         }
3166                         break;
3167                 default:
3168                         break;
3169                 }
3170
3171                 param.p2p_device = support_p2p_device;
3172                 param.use_chanctx = channels > 1;
3173
3174                 err = mac80211_hwsim_new_radio(NULL, &param);
3175                 if (err < 0)
3176                         goto out_free_radios;
3177         }
3178
3179         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3180                                  hwsim_mon_setup);
3181         if (hwsim_mon == NULL) {
3182                 err = -ENOMEM;
3183                 goto out_free_radios;
3184         }
3185
3186         rtnl_lock();
3187         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3188         if (err < 0) {
3189                 rtnl_unlock();
3190                 goto out_free_radios;
3191         }
3192
3193         err = register_netdevice(hwsim_mon);
3194         if (err < 0) {
3195                 rtnl_unlock();
3196                 goto out_free_mon;
3197         }
3198         rtnl_unlock();
3199
3200         return 0;
3201
3202 out_free_mon:
3203         free_netdev(hwsim_mon);
3204 out_free_radios:
3205         mac80211_hwsim_free();
3206 out_unregister_driver:
3207         platform_driver_unregister(&mac80211_hwsim_driver);
3208         return err;
3209 }
3210 module_init(init_mac80211_hwsim);
3211
3212 static void __exit exit_mac80211_hwsim(void)
3213 {
3214         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3215
3216         hwsim_exit_netlink();
3217
3218         mac80211_hwsim_free();
3219         unregister_netdev(hwsim_mon);
3220         platform_driver_unregister(&mac80211_hwsim_driver);
3221 }
3222 module_exit(exit_mac80211_hwsim);