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                 .owner = THIS_MODULE,
 399         },
 400 };
 401
 402 struct mac80211_hwsim_data {
 403         struct list_head list;
 404         struct ieee80211_hw *hw;
 405         struct device *dev;
 406         struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 407         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 408         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 409         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 410         struct ieee80211_iface_combination if_combination;
 411
 412         struct mac_address addresses[2];
 413         int channels, idx;
 414         bool use_chanctx;
 415         bool destroy_on_close;
 416         struct work_struct destroy_work;
 417         u32 portid;
 418         char alpha2[2];
 419         const struct ieee80211_regdomain *regd;
 420
 421         struct ieee80211_channel *tmp_chan;
 422         struct delayed_work roc_done;
 423         struct delayed_work hw_scan;
 424         struct cfg80211_scan_request *hw_scan_request;
 425         struct ieee80211_vif *hw_scan_vif;
 426         int scan_chan_idx;
 427         u8 scan_addr[ETH_ALEN];
 428
 429         struct ieee80211_channel *channel;
 430         u64 beacon_int  /* beacon interval in us */;
 431         unsigned int rx_filter;
 432         bool started, idle, scanning;
 433         struct mutex mutex;
 434         struct tasklet_hrtimer beacon_timer;
 435         enum ps_mode {
 436                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 437         } ps;
 438         bool ps_poll_pending;
 439         struct dentry *debugfs;
 440
 441         struct sk_buff_head pending;    /* packets pending */
 442         /*
 443          * Only radios in the same group can communicate together (the
 444          * channel has to match too). Each bit represents a group. A
 445          * radio can be in more than one group.
 446          */
 447         u64 group;
 448
 449         int power_level;
 450
 451         /* difference between this hw's clock and the real clock, in usecs */
 452         s64 tsf_offset;
 453         s64 bcn_delta;
 454         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 455         u64 abs_bcn_ts;
 456
 457         /* Stats */
 458         u64 tx_pkts;
 459         u64 rx_pkts;
 460         u64 tx_bytes;
 461         u64 rx_bytes;
 462         u64 tx_dropped;
 463         u64 tx_failed;
 464 };
 465
 466
 467 struct hwsim_radiotap_hdr {
 468         struct ieee80211_radiotap_header hdr;
 469         __le64 rt_tsft;
 470         u8 rt_flags;
 471         u8 rt_rate;
 472         __le16 rt_channel;
 473         __le16 rt_chbitmask;
 474 } __packed;
 475
 476 struct hwsim_radiotap_ack_hdr {
 477         struct ieee80211_radiotap_header hdr;
 478         u8 rt_flags;
 479         u8 pad;
 480         __le16 rt_channel;
 481         __le16 rt_chbitmask;
 482 } __packed;
 483
 484 /* MAC80211_HWSIM netlinf family */
 485 static struct genl_family hwsim_genl_family = {
 486         .id = GENL_ID_GENERATE,
 487         .hdrsize = 0,
 488         .name = "MAC80211_HWSIM",
 489         .version = 1,
 490         .maxattr = HWSIM_ATTR_MAX,
 491 };
 492
 493 enum hwsim_multicast_groups {
 494         HWSIM_MCGRP_CONFIG,
 495 };
 496
 497 static const struct genl_multicast_group hwsim_mcgrps[] = {
 498         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 499 };
 500
 501 /* MAC80211_HWSIM netlink policy */
 502
 503 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 504         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 505         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 506         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 507                                .len = IEEE80211_MAX_DATA_LEN },
 508         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 509         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 510         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 511         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 512                                  .len = IEEE80211_TX_MAX_RATES *
 513                                         sizeof(struct hwsim_tx_rate)},
 514         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 515         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 516         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 517         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 518         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 519         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 520         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 521         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 522         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 523         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 524         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 525 };
 526
 527 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 528                                     struct sk_buff *skb,
 529                                     struct ieee80211_channel *chan);
 530
 531 /* sysfs attributes */
 532 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 533 {
 534         struct mac80211_hwsim_data *data = dat;
 535         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 536         struct sk_buff *skb;
 537         struct ieee80211_pspoll *pspoll;
 538
 539         if (!vp->assoc)
 540                 return;
 541
 542         wiphy_debug(data->hw->wiphy,
 543                     "%s: send PS-Poll to %pM for aid %d\n",
 544                     __func__, vp->bssid, vp->aid);
 545
 546         skb = dev_alloc_skb(sizeof(*pspoll));
 547         if (!skb)
 548                 return;
 549         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 550         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 551                                             IEEE80211_STYPE_PSPOLL |
 552                                             IEEE80211_FCTL_PM);
 553         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 554         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 555         memcpy(pspoll->ta, mac, ETH_ALEN);
 556
 557         rcu_read_lock();
 558         mac80211_hwsim_tx_frame(data->hw, skb,
 559                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 560         rcu_read_unlock();
 561 }
 562
 563 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 564                                 struct ieee80211_vif *vif, int ps)
 565 {
 566         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 567         struct sk_buff *skb;
 568         struct ieee80211_hdr *hdr;
 569
 570         if (!vp->assoc)
 571                 return;
 572
 573         wiphy_debug(data->hw->wiphy,
 574                     "%s: send data::nullfunc to %pM ps=%d\n",
 575                     __func__, vp->bssid, ps);
 576
 577         skb = dev_alloc_skb(sizeof(*hdr));
 578         if (!skb)
 579                 return;
 580         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 581         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 582                                          IEEE80211_STYPE_NULLFUNC |
 583                                          (ps ? IEEE80211_FCTL_PM : 0));
 584         hdr->duration_id = cpu_to_le16(0);
 585         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 586         memcpy(hdr->addr2, mac, ETH_ALEN);
 587         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 588
 589         rcu_read_lock();
 590         mac80211_hwsim_tx_frame(data->hw, skb,
 591                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 592         rcu_read_unlock();
 593 }
 594
 595
 596 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 597                                    struct ieee80211_vif *vif)
 598 {
 599         struct mac80211_hwsim_data *data = dat;
 600         hwsim_send_nullfunc(data, mac, vif, 1);
 601 }
 602
 603 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 604                                       struct ieee80211_vif *vif)
 605 {
 606         struct mac80211_hwsim_data *data = dat;
 607         hwsim_send_nullfunc(data, mac, vif, 0);
 608 }
 609
 610 static int hwsim_fops_ps_read(void *dat, u64 *val)
 611 {
 612         struct mac80211_hwsim_data *data = dat;
 613         *val = data->ps;
 614         return 0;
 615 }
 616
 617 static int hwsim_fops_ps_write(void *dat, u64 val)
 618 {
 619         struct mac80211_hwsim_data *data = dat;
 620         enum ps_mode old_ps;
 621
 622         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 623             val != PS_MANUAL_POLL)
 624                 return -EINVAL;
 625
 626         old_ps = data->ps;
 627         data->ps = val;
 628
 629         if (val == PS_MANUAL_POLL) {
 630                 ieee80211_iterate_active_interfaces(data->hw,
 631                                                     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(data->hw,
 636                                                     IEEE80211_IFACE_ITER_NORMAL,
 637                                                     hwsim_send_nullfunc_ps,
 638                                                     data);
 639         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 640                 ieee80211_iterate_active_interfaces(data->hw,
 641                                                     IEEE80211_IFACE_ITER_NORMAL,
 642                                                     hwsim_send_nullfunc_no_ps,
 643                                                     data);
 644         }
 645
 646         return 0;
 647 }
 648
 649 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 650                         "%llu\n");
 651
 652 static int hwsim_write_simulate_radar(void *dat, u64 val)
 653 {
 654         struct mac80211_hwsim_data *data = dat;
 655
 656         ieee80211_radar_detected(data->hw);
 657
 658         return 0;
 659 }
 660
 661 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 662                         hwsim_write_simulate_radar, "%llu\n");
 663
 664 static int hwsim_fops_group_read(void *dat, u64 *val)
 665 {
 666         struct mac80211_hwsim_data *data = dat;
 667         *val = data->group;
 668         return 0;
 669 }
 670
 671 static int hwsim_fops_group_write(void *dat, u64 val)
 672 {
 673         struct mac80211_hwsim_data *data = dat;
 674         data->group = val;
 675         return 0;
 676 }
 677
 678 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 679                         hwsim_fops_group_read, hwsim_fops_group_write,
 680                         "%llx\n");
 681
 682 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 683                                         struct net_device *dev)
 684 {
 685         /* TODO: allow packet injection */
 686         dev_kfree_skb(skb);
 687         return NETDEV_TX_OK;
 688 }
 689
 690 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 691 {
 692         return ktime_to_us(ktime_get_real());
 693 }
 694
 695 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 696 {
 697         u64 now = mac80211_hwsim_get_tsf_raw();
 698         return cpu_to_le64(now + data->tsf_offset);
 699 }
 700
 701 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 702                                   struct ieee80211_vif *vif)
 703 {
 704         struct mac80211_hwsim_data *data = hw->priv;
 705         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 706 }
 707
 708 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 709                 struct ieee80211_vif *vif, u64 tsf)
 710 {
 711         struct mac80211_hwsim_data *data = hw->priv;
 712         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 713         u32 bcn_int = data->beacon_int;
 714         u64 delta = abs64(tsf - now);
 715
 716         /* adjust after beaconing with new timestamp at old TBTT */
 717         if (tsf > now) {
 718                 data->tsf_offset += delta;
 719                 data->bcn_delta = do_div(delta, bcn_int);
 720         } else {
 721                 data->tsf_offset -= delta;
 722                 data->bcn_delta = -do_div(delta, bcn_int);
 723         }
 724 }
 725
 726 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 727                                       struct sk_buff *tx_skb,
 728                                       struct ieee80211_channel *chan)
 729 {
 730         struct mac80211_hwsim_data *data = hw->priv;
 731         struct sk_buff *skb;
 732         struct hwsim_radiotap_hdr *hdr;
 733         u16 flags;
 734         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 735         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 736
 737         if (!netif_running(hwsim_mon))
 738                 return;
 739
 740         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 741         if (skb == NULL)
 742                 return;
 743
 744         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 745         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 746         hdr->hdr.it_pad = 0;
 747         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 748         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 749                                           (1 << IEEE80211_RADIOTAP_RATE) |
 750                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 751                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 752         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 753         hdr->rt_flags = 0;
 754         hdr->rt_rate = txrate->bitrate / 5;
 755         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 756         flags = IEEE80211_CHAN_2GHZ;
 757         if (txrate->flags & IEEE80211_RATE_ERP_G)
 758                 flags |= IEEE80211_CHAN_OFDM;
 759         else
 760                 flags |= IEEE80211_CHAN_CCK;
 761         hdr->rt_chbitmask = cpu_to_le16(flags);
 762
 763         skb->dev = hwsim_mon;
 764         skb_set_mac_header(skb, 0);
 765         skb->ip_summed = CHECKSUM_UNNECESSARY;
 766         skb->pkt_type = PACKET_OTHERHOST;
 767         skb->protocol = htons(ETH_P_802_2);
 768         memset(skb->cb, 0, sizeof(skb->cb));
 769         netif_rx(skb);
 770 }
 771
 772
 773 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 774                                        const u8 *addr)
 775 {
 776         struct sk_buff *skb;
 777         struct hwsim_radiotap_ack_hdr *hdr;
 778         u16 flags;
 779         struct ieee80211_hdr *hdr11;
 780
 781         if (!netif_running(hwsim_mon))
 782                 return;
 783
 784         skb = dev_alloc_skb(100);
 785         if (skb == NULL)
 786                 return;
 787
 788         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 789         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 790         hdr->hdr.it_pad = 0;
 791         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 792         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 793                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 794         hdr->rt_flags = 0;
 795         hdr->pad = 0;
 796         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 797         flags = IEEE80211_CHAN_2GHZ;
 798         hdr->rt_chbitmask = cpu_to_le16(flags);
 799
 800         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 801         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 802                                            IEEE80211_STYPE_ACK);
 803         hdr11->duration_id = cpu_to_le16(0);
 804         memcpy(hdr11->addr1, addr, ETH_ALEN);
 805
 806         skb->dev = hwsim_mon;
 807         skb_set_mac_header(skb, 0);
 808         skb->ip_summed = CHECKSUM_UNNECESSARY;
 809         skb->pkt_type = PACKET_OTHERHOST;
 810         skb->protocol = htons(ETH_P_802_2);
 811         memset(skb->cb, 0, sizeof(skb->cb));
 812         netif_rx(skb);
 813 }
 814
 815 struct mac80211_hwsim_addr_match_data {
 816         u8 addr[ETH_ALEN];
 817         bool ret;
 818 };
 819
 820 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 821                                      struct ieee80211_vif *vif)
 822 {
 823         struct mac80211_hwsim_addr_match_data *md = data;
 824
 825         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 826                 md->ret = true;
 827 }
 828
 829 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 830                                       const u8 *addr)
 831 {
 832         struct mac80211_hwsim_addr_match_data md = {
 833                 .ret = false,
 834         };
 835
 836         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 837                 return true;
 838
 839         memcpy(md.addr, addr, ETH_ALEN);
 840
 841         ieee80211_iterate_active_interfaces_atomic(data->hw,
 842                                                    IEEE80211_IFACE_ITER_NORMAL,
 843                                                    mac80211_hwsim_addr_iter,
 844                                                    &md);
 845
 846         return md.ret;
 847 }
 848
 849 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 850                            struct sk_buff *skb)
 851 {
 852         switch (data->ps) {
 853         case PS_DISABLED:
 854                 return true;
 855         case PS_ENABLED:
 856                 return false;
 857         case PS_AUTO_POLL:
 858                 /* TODO: accept (some) Beacons by default and other frames only
 859                  * if pending PS-Poll has been sent */
 860                 return true;
 861         case PS_MANUAL_POLL:
 862                 /* Allow unicast frames to own address if there is a pending
 863                  * PS-Poll */
 864                 if (data->ps_poll_pending &&
 865                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 866                         data->ps_poll_pending = false;
 867                         return true;
 868                 }
 869                 return false;
 870         }
 871
 872         return true;
 873 }
 874
 875 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 876                                        struct sk_buff *my_skb,
 877                                        int dst_portid)
 878 {
 879         struct sk_buff *skb;
 880         struct mac80211_hwsim_data *data = hw->priv;
 881         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
 882         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
 883         void *msg_head;
 884         unsigned int hwsim_flags = 0;
 885         int i;
 886         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
 887
 888         if (data->ps != PS_DISABLED)
 889                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
 890         /* If the queue contains MAX_QUEUE skb's drop some */
 891         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
 892                 /* Droping until WARN_QUEUE level */
 893                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
 894                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
 895                         data->tx_dropped++;
 896                 }
 897         }
 898
 899         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
 900         if (skb == NULL)
 901                 goto nla_put_failure;
 902
 903         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
 904                                HWSIM_CMD_FRAME);
 905         if (msg_head == NULL) {
 906                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
 907                 goto nla_put_failure;
 908         }
 909
 910         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
 911                     ETH_ALEN, data->addresses[1].addr))
 912                 goto nla_put_failure;
 913
 914         /* We get the skb->data */
 915         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
 916                 goto nla_put_failure;
 917
 918         /* We get the flags for this transmission, and we translate them to
 919            wmediumd flags  */
 920
 921         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 922                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
 923
 924         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 925                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
 926
 927         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
 928                 goto nla_put_failure;
 929
 930         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
 931                 goto nla_put_failure;
 932
 933         /* We get the tx control (rate and retries) info*/
 934
 935         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 936                 tx_attempts[i].idx = info->status.rates[i].idx;
 937                 tx_attempts[i].count = info->status.rates[i].count;
 938         }
 939
 940         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
 941                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
 942                     tx_attempts))
 943                 goto nla_put_failure;
 944
 945         /* We create a cookie to identify this skb */
 946         if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
 947                 goto nla_put_failure;
 948
 949         genlmsg_end(skb, msg_head);
 950         genlmsg_unicast(&init_net, skb, dst_portid);
 951
 952         /* Enqueue the packet */
 953         skb_queue_tail(&data->pending, my_skb);
 954         data->tx_pkts++;
 955         data->tx_bytes += my_skb->len;
 956         return;
 957
 958 nla_put_failure:
 959         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
 960         ieee80211_free_txskb(hw, my_skb);
 961         data->tx_failed++;
 962 }
 963
 964 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
 965                                struct ieee80211_channel *c2)
 966 {
 967         if (!c1 || !c2)
 968                 return false;
 969
 970         return c1->center_freq == c2->center_freq;
 971 }
 972
 973 struct tx_iter_data {
 974         struct ieee80211_channel *channel;
 975         bool receive;
 976 };
 977
 978 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
 979                                    struct ieee80211_vif *vif)
 980 {
 981         struct tx_iter_data *data = _data;
 982
 983         if (!vif->chanctx_conf)
 984                 return;
 985
 986         if (!hwsim_chans_compat(data->channel,
 987                                 rcu_dereference(vif->chanctx_conf)->def.chan))
 988                 return;
 989
 990         data->receive = true;
 991 }
 992
 993 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
 994 {
 995         /*
 996          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
 997          * e.g. like this:
 998          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
 999          * (but you should use a valid OUI, not that)
1000          *
1001          * If anyone wants to 'donate' a radiotap OUI/subns code
1002          * please send a patch removing this #ifdef and changing
1003          * the values accordingly.
1004          */
1005 #ifdef HWSIM_RADIOTAP_OUI
1006         struct ieee80211_vendor_radiotap *rtap;
1007
1008         /*
1009          * Note that this code requires the headroom in the SKB
1010          * that was allocated earlier.
1011          */
1012         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1013         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1014         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1015         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1016         rtap->subns = 127;
1017
1018         /*
1019          * Radiotap vendor namespaces can (and should) also be
1020          * split into fields by using the standard radiotap
1021          * presence bitmap mechanism. Use just BIT(0) here for
1022          * the presence bitmap.
1023          */
1024         rtap->present = BIT(0);
1025         /* We have 8 bytes of (dummy) data */
1026         rtap->len = 8;
1027         /* For testing, also require it to be aligned */
1028         rtap->align = 8;
1029         /* And also test that padding works, 4 bytes */
1030         rtap->pad = 4;
1031         /* push the data */
1032         memcpy(rtap->data, "ABCDEFGH", 8);
1033         /* make sure to clear padding, mac80211 doesn't */
1034         memset(rtap->data + 8, 0, 4);
1035
1036         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1037 #endif
1038 }
1039
1040 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1041                                           struct sk_buff *skb,
1042                                           struct ieee80211_channel *chan)
1043 {
1044         struct mac80211_hwsim_data *data = hw->priv, *data2;
1045         bool ack = false;
1046         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1047         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1048         struct ieee80211_rx_status rx_status;
1049         u64 now;
1050
1051         memset(&rx_status, 0, sizeof(rx_status));
1052         rx_status.flag |= RX_FLAG_MACTIME_START;
1053         rx_status.freq = chan->center_freq;
1054         rx_status.band = chan->band;
1055         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1056                 rx_status.rate_idx =
1057                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1058                 rx_status.vht_nss =
1059                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1060                 rx_status.flag |= RX_FLAG_VHT;
1061         } else {
1062                 rx_status.rate_idx = info->control.rates[0].idx;
1063                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1064                         rx_status.flag |= RX_FLAG_HT;
1065         }
1066         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1067                 rx_status.flag |= RX_FLAG_40MHZ;
1068         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1069                 rx_status.flag |= RX_FLAG_SHORT_GI;
1070         /* TODO: simulate real signal strength (and optional packet loss) */
1071         rx_status.signal = data->power_level - 50;
1072
1073         if (data->ps != PS_DISABLED)
1074                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1075
1076         /* release the skb's source info */
1077         skb_orphan(skb);
1078         skb_dst_drop(skb);
1079         skb->mark = 0;
1080         secpath_reset(skb);
1081         nf_reset(skb);
1082
1083         /*
1084          * Get absolute mactime here so all HWs RX at the "same time", and
1085          * absolute TX time for beacon mactime so the timestamp matches.
1086          * Giving beacons a different mactime than non-beacons looks messy, but
1087          * it helps the Toffset be exact and a ~10us mactime discrepancy
1088          * probably doesn't really matter.
1089          */
1090         if (ieee80211_is_beacon(hdr->frame_control) ||
1091             ieee80211_is_probe_resp(hdr->frame_control))
1092                 now = data->abs_bcn_ts;
1093         else
1094                 now = mac80211_hwsim_get_tsf_raw();
1095
1096         /* Copy skb to all enabled radios that are on the current frequency */
1097         spin_lock(&hwsim_radio_lock);
1098         list_for_each_entry(data2, &hwsim_radios, list) {
1099                 struct sk_buff *nskb;
1100                 struct tx_iter_data tx_iter_data = {
1101                         .receive = false,
1102                         .channel = chan,
1103                 };
1104
1105                 if (data == data2)
1106                         continue;
1107
1108                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1109                     !hwsim_ps_rx_ok(data2, skb))
1110                         continue;
1111
1112                 if (!(data->group & data2->group))
1113                         continue;
1114
1115                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1116                     !hwsim_chans_compat(chan, data2->channel)) {
1117                         ieee80211_iterate_active_interfaces_atomic(
1118                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1119                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1120                         if (!tx_iter_data.receive)
1121                                 continue;
1122                 }
1123
1124                 /*
1125                  * reserve some space for our vendor and the normal
1126                  * radiotap header, since we're copying anyway
1127                  */
1128                 if (skb->len < PAGE_SIZE && paged_rx) {
1129                         struct page *page = alloc_page(GFP_ATOMIC);
1130
1131                         if (!page)
1132                                 continue;
1133
1134                         nskb = dev_alloc_skb(128);
1135                         if (!nskb) {
1136                                 __free_page(page);
1137                                 continue;
1138                         }
1139
1140                         memcpy(page_address(page), skb->data, skb->len);
1141                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1142                 } else {
1143                         nskb = skb_copy(skb, GFP_ATOMIC);
1144                         if (!nskb)
1145                                 continue;
1146                 }
1147
1148                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1149                         ack = true;
1150
1151                 rx_status.mactime = now + data2->tsf_offset;
1152
1153                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1154
1155                 mac80211_hwsim_add_vendor_rtap(nskb);
1156
1157                 data2->rx_pkts++;
1158                 data2->rx_bytes += nskb->len;
1159                 ieee80211_rx_irqsafe(data2->hw, nskb);
1160         }
1161         spin_unlock(&hwsim_radio_lock);
1162
1163         return ack;
1164 }
1165
1166 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1167                               struct ieee80211_tx_control *control,
1168                               struct sk_buff *skb)
1169 {
1170         struct mac80211_hwsim_data *data = hw->priv;
1171         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1172         struct ieee80211_chanctx_conf *chanctx_conf;
1173         struct ieee80211_channel *channel;
1174         bool ack;
1175         u32 _portid;
1176
1177         if (WARN_ON(skb->len < 10)) {
1178                 /* Should not happen; just a sanity check for addr1 use */
1179                 ieee80211_free_txskb(hw, skb);
1180                 return;
1181         }
1182
1183         if (!data->use_chanctx) {
1184                 channel = data->channel;
1185         } else if (txi->hw_queue == 4) {
1186                 channel = data->tmp_chan;
1187         } else {
1188                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1189                 if (chanctx_conf)
1190                         channel = chanctx_conf->def.chan;
1191                 else
1192                         channel = NULL;
1193         }
1194
1195         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1196                 ieee80211_free_txskb(hw, skb);
1197                 return;
1198         }
1199
1200         if (data->idle && !data->tmp_chan) {
1201                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1202                 ieee80211_free_txskb(hw, skb);
1203                 return;
1204         }
1205
1206         if (txi->control.vif)
1207                 hwsim_check_magic(txi->control.vif);
1208         if (control->sta)
1209                 hwsim_check_sta_magic(control->sta);
1210
1211         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1212                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1213                                        txi->control.rates,
1214                                        ARRAY_SIZE(txi->control.rates));
1215
1216         txi->rate_driver_data[0] = channel;
1217         mac80211_hwsim_monitor_rx(hw, skb, channel);
1218
1219         /* wmediumd mode check */
1220         _portid = ACCESS_ONCE(wmediumd_portid);
1221
1222         if (_portid)
1223                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1224
1225         /* NO wmediumd detected, perfect medium simulation */
1226         data->tx_pkts++;
1227         data->tx_bytes += skb->len;
1228         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1229
1230         if (ack && skb->len >= 16) {
1231                 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1232                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1233         }
1234
1235         ieee80211_tx_info_clear_status(txi);
1236
1237         /* frame was transmitted at most favorable rate at first attempt */
1238         txi->control.rates[0].count = 1;
1239         txi->control.rates[1].idx = -1;
1240
1241         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1242                 txi->flags |= IEEE80211_TX_STAT_ACK;
1243         ieee80211_tx_status_irqsafe(hw, skb);
1244 }
1245
1246
1247 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1248 {
1249         struct mac80211_hwsim_data *data = hw->priv;
1250         wiphy_debug(hw->wiphy, "%s\n", __func__);
1251         data->started = true;
1252         return 0;
1253 }
1254
1255
1256 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1257 {
1258         struct mac80211_hwsim_data *data = hw->priv;
1259         data->started = false;
1260         tasklet_hrtimer_cancel(&data->beacon_timer);
1261         wiphy_debug(hw->wiphy, "%s\n", __func__);
1262 }
1263
1264
1265 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1266                                         struct ieee80211_vif *vif)
1267 {
1268         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1269                     __func__, ieee80211_vif_type_p2p(vif),
1270                     vif->addr);
1271         hwsim_set_magic(vif);
1272
1273         vif->cab_queue = 0;
1274         vif->hw_queue[IEEE80211_AC_VO] = 0;
1275         vif->hw_queue[IEEE80211_AC_VI] = 1;
1276         vif->hw_queue[IEEE80211_AC_BE] = 2;
1277         vif->hw_queue[IEEE80211_AC_BK] = 3;
1278
1279         return 0;
1280 }
1281
1282
1283 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1284                                            struct ieee80211_vif *vif,
1285                                            enum nl80211_iftype newtype,
1286                                            bool newp2p)
1287 {
1288         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1289         wiphy_debug(hw->wiphy,
1290                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1291                     __func__, ieee80211_vif_type_p2p(vif),
1292                     newtype, vif->addr);
1293         hwsim_check_magic(vif);
1294
1295         /*
1296          * interface may change from non-AP to AP in
1297          * which case this needs to be set up again
1298          */
1299         vif->cab_queue = 0;
1300
1301         return 0;
1302 }
1303
1304 static void mac80211_hwsim_remove_interface(
1305         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1306 {
1307         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1308                     __func__, ieee80211_vif_type_p2p(vif),
1309                     vif->addr);
1310         hwsim_check_magic(vif);
1311         hwsim_clear_magic(vif);
1312 }
1313
1314 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1315                                     struct sk_buff *skb,
1316                                     struct ieee80211_channel *chan)
1317 {
1318         u32 _pid = ACCESS_ONCE(wmediumd_portid);
1319
1320         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
1321                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1322                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1323                                        txi->control.rates,
1324                                        ARRAY_SIZE(txi->control.rates));
1325         }
1326
1327         mac80211_hwsim_monitor_rx(hw, skb, chan);
1328
1329         if (_pid)
1330                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1331
1332         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1333         dev_kfree_skb(skb);
1334 }
1335
1336 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1337                                      struct ieee80211_vif *vif)
1338 {
1339         struct mac80211_hwsim_data *data = arg;
1340         struct ieee80211_hw *hw = data->hw;
1341         struct ieee80211_tx_info *info;
1342         struct ieee80211_rate *txrate;
1343         struct ieee80211_mgmt *mgmt;
1344         struct sk_buff *skb;
1345
1346         hwsim_check_magic(vif);
1347
1348         if (vif->type != NL80211_IFTYPE_AP &&
1349             vif->type != NL80211_IFTYPE_MESH_POINT &&
1350             vif->type != NL80211_IFTYPE_ADHOC)
1351                 return;
1352
1353         skb = ieee80211_beacon_get(hw, vif);
1354         if (skb == NULL)
1355                 return;
1356         info = IEEE80211_SKB_CB(skb);
1357         if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
1358                 ieee80211_get_tx_rates(vif, NULL, skb,
1359                                        info->control.rates,
1360                                        ARRAY_SIZE(info->control.rates));
1361
1362         txrate = ieee80211_get_tx_rate(hw, info);
1363
1364         mgmt = (struct ieee80211_mgmt *) skb->data;
1365         /* fake header transmission time */
1366         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1367         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1368                                                data->tsf_offset +
1369                                                24 * 8 * 10 / txrate->bitrate);
1370
1371         mac80211_hwsim_tx_frame(hw, skb,
1372                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1373
1374         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1375                 ieee80211_csa_finish(vif);
1376 }
1377
1378 static enum hrtimer_restart
1379 mac80211_hwsim_beacon(struct hrtimer *timer)
1380 {
1381         struct mac80211_hwsim_data *data =
1382                 container_of(timer, struct mac80211_hwsim_data,
1383                              beacon_timer.timer);
1384         struct ieee80211_hw *hw = data->hw;
1385         u64 bcn_int = data->beacon_int;
1386         ktime_t next_bcn;
1387
1388         if (!data->started)
1389                 goto out;
1390
1391         ieee80211_iterate_active_interfaces_atomic(
1392                 hw, IEEE80211_IFACE_ITER_NORMAL,
1393                 mac80211_hwsim_beacon_tx, data);
1394
1395         /* beacon at new TBTT + beacon interval */
1396         if (data->bcn_delta) {
1397                 bcn_int -= data->bcn_delta;
1398                 data->bcn_delta = 0;
1399         }
1400
1401         next_bcn = ktime_add(hrtimer_get_expires(timer),
1402                              ns_to_ktime(bcn_int * 1000));
1403         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1404 out:
1405         return HRTIMER_NORESTART;
1406 }
1407
1408 static const char * const hwsim_chanwidths[] = {
1409         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1410         [NL80211_CHAN_WIDTH_20] = "ht20",
1411         [NL80211_CHAN_WIDTH_40] = "ht40",
1412         [NL80211_CHAN_WIDTH_80] = "vht80",
1413         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1414         [NL80211_CHAN_WIDTH_160] = "vht160",
1415 };
1416
1417 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1418 {
1419         struct mac80211_hwsim_data *data = hw->priv;
1420         struct ieee80211_conf *conf = &hw->conf;
1421         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1422                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1423                 [IEEE80211_SMPS_OFF] = "off",
1424                 [IEEE80211_SMPS_STATIC] = "static",
1425                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1426         };
1427
1428         if (conf->chandef.chan)
1429                 wiphy_debug(hw->wiphy,
1430                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1431                             __func__,
1432                             conf->chandef.chan->center_freq,
1433                             conf->chandef.center_freq1,
1434                             conf->chandef.center_freq2,
1435                             hwsim_chanwidths[conf->chandef.width],
1436                             !!(conf->flags & IEEE80211_CONF_IDLE),
1437                             !!(conf->flags & IEEE80211_CONF_PS),
1438                             smps_modes[conf->smps_mode]);
1439         else
1440                 wiphy_debug(hw->wiphy,
1441                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1442                             __func__,
1443                             !!(conf->flags & IEEE80211_CONF_IDLE),
1444                             !!(conf->flags & IEEE80211_CONF_PS),
1445                             smps_modes[conf->smps_mode]);
1446
1447         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1448
1449         data->channel = conf->chandef.chan;
1450
1451         WARN_ON(data->channel && data->use_chanctx);
1452
1453         data->power_level = conf->power_level;
1454         if (!data->started || !data->beacon_int)
1455                 tasklet_hrtimer_cancel(&data->beacon_timer);
1456         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1457                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1458                 u32 bcn_int = data->beacon_int;
1459                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1460
1461                 tasklet_hrtimer_start(&data->beacon_timer,
1462                                       ns_to_ktime(until_tbtt * 1000),
1463                                       HRTIMER_MODE_REL);
1464         }
1465
1466         return 0;
1467 }
1468
1469
1470 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1471                                             unsigned int changed_flags,
1472                                             unsigned int *total_flags,u64 multicast)
1473 {
1474         struct mac80211_hwsim_data *data = hw->priv;
1475
1476         wiphy_debug(hw->wiphy, "%s\n", __func__);
1477
1478         data->rx_filter = 0;
1479         if (*total_flags & FIF_PROMISC_IN_BSS)
1480                 data->rx_filter |= FIF_PROMISC_IN_BSS;
1481         if (*total_flags & FIF_ALLMULTI)
1482                 data->rx_filter |= FIF_ALLMULTI;
1483
1484         *total_flags = data->rx_filter;
1485 }
1486
1487 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1488                                        struct ieee80211_vif *vif)
1489 {
1490         unsigned int *count = data;
1491         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1492
1493         if (vp->bcn_en)
1494                 (*count)++;
1495 }
1496
1497 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1498                                             struct ieee80211_vif *vif,
1499                                             struct ieee80211_bss_conf *info,
1500                                             u32 changed)
1501 {
1502         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1503         struct mac80211_hwsim_data *data = hw->priv;
1504
1505         hwsim_check_magic(vif);
1506
1507         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1508                     __func__, changed, vif->addr);
1509
1510         if (changed & BSS_CHANGED_BSSID) {
1511                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1512                             __func__, info->bssid);
1513                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1514         }
1515
1516         if (changed & BSS_CHANGED_ASSOC) {
1517                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1518                             info->assoc, info->aid);
1519                 vp->assoc = info->assoc;
1520                 vp->aid = info->aid;
1521         }
1522
1523         if (changed & BSS_CHANGED_BEACON_INT) {
1524                 wiphy_debug(hw->wiphy, "  BCNINT: %d\n", info->beacon_int);
1525                 data->beacon_int = info->beacon_int * 1024;
1526         }
1527
1528         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1529                 wiphy_debug(hw->wiphy, "  BCN EN: %d\n", info->enable_beacon);
1530                 vp->bcn_en = info->enable_beacon;
1531                 if (data->started &&
1532                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1533                     info->enable_beacon) {
1534                         u64 tsf, until_tbtt;
1535                         u32 bcn_int;
1536                         if (WARN_ON(!data->beacon_int))
1537                                 data->beacon_int = 1000 * 1024;
1538                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1539                         bcn_int = data->beacon_int;
1540                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1541                         tasklet_hrtimer_start(&data->beacon_timer,
1542                                               ns_to_ktime(until_tbtt * 1000),
1543                                               HRTIMER_MODE_REL);
1544                 } else if (!info->enable_beacon) {
1545                         unsigned int count = 0;
1546                         ieee80211_iterate_active_interfaces_atomic(
1547                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1548                                 mac80211_hwsim_bcn_en_iter, &count);
1549                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1550                                     count);
1551                         if (count == 0)
1552                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1553                 }
1554         }
1555
1556         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1557                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1558                             info->use_cts_prot);
1559         }
1560
1561         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1562                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1563                             info->use_short_preamble);
1564         }
1565
1566         if (changed & BSS_CHANGED_ERP_SLOT) {
1567                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1568         }
1569
1570         if (changed & BSS_CHANGED_HT) {
1571                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1572                             info->ht_operation_mode);
1573         }
1574
1575         if (changed & BSS_CHANGED_BASIC_RATES) {
1576                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1577                             (unsigned long long) info->basic_rates);
1578         }
1579
1580         if (changed & BSS_CHANGED_TXPOWER)
1581                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1582 }
1583
1584 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1585                                   struct ieee80211_vif *vif,
1586                                   struct ieee80211_sta *sta)
1587 {
1588         hwsim_check_magic(vif);
1589         hwsim_set_sta_magic(sta);
1590
1591         return 0;
1592 }
1593
1594 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1595                                      struct ieee80211_vif *vif,
1596                                      struct ieee80211_sta *sta)
1597 {
1598         hwsim_check_magic(vif);
1599         hwsim_clear_sta_magic(sta);
1600
1601         return 0;
1602 }
1603
1604 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1605                                       struct ieee80211_vif *vif,
1606                                       enum sta_notify_cmd cmd,
1607                                       struct ieee80211_sta *sta)
1608 {
1609         hwsim_check_magic(vif);
1610
1611         switch (cmd) {
1612         case STA_NOTIFY_SLEEP:
1613         case STA_NOTIFY_AWAKE:
1614                 /* TODO: make good use of these flags */
1615                 break;
1616         default:
1617                 WARN(1, "Invalid sta notify: %d\n", cmd);
1618                 break;
1619         }
1620 }
1621
1622 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1623                                   struct ieee80211_sta *sta,
1624                                   bool set)
1625 {
1626         hwsim_check_sta_magic(sta);
1627         return 0;
1628 }
1629
1630 static int mac80211_hwsim_conf_tx(
1631         struct ieee80211_hw *hw,
1632         struct ieee80211_vif *vif, u16 queue,
1633         const struct ieee80211_tx_queue_params *params)
1634 {
1635         wiphy_debug(hw->wiphy,
1636                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1637                     __func__, queue,
1638                     params->txop, params->cw_min,
1639                     params->cw_max, params->aifs);
1640         return 0;
1641 }
1642
1643 static int mac80211_hwsim_get_survey(
1644         struct ieee80211_hw *hw, int idx,
1645         struct survey_info *survey)
1646 {
1647         struct ieee80211_conf *conf = &hw->conf;
1648
1649         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1650
1651         if (idx != 0)
1652                 return -ENOENT;
1653
1654         /* Current channel */
1655         survey->channel = conf->chandef.chan;
1656
1657         /*
1658          * Magically conjured noise level --- this is only ok for simulated hardware.
1659          *
1660          * A real driver which cannot determine the real channel noise MUST NOT
1661          * report any noise, especially not a magically conjured one :-)
1662          */
1663         survey->filled = SURVEY_INFO_NOISE_DBM;
1664         survey->noise = -92;
1665
1666         return 0;
1667 }
1668
1669 #ifdef CONFIG_NL80211_TESTMODE
1670 /*
1671  * This section contains example code for using netlink
1672  * attributes with the testmode command in nl80211.
1673  */
1674
1675 /* These enums need to be kept in sync with userspace */
1676 enum hwsim_testmode_attr {
1677         __HWSIM_TM_ATTR_INVALID = 0,
1678         HWSIM_TM_ATTR_CMD       = 1,
1679         HWSIM_TM_ATTR_PS        = 2,
1680
1681         /* keep last */
1682         __HWSIM_TM_ATTR_AFTER_LAST,
1683         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1684 };
1685
1686 enum hwsim_testmode_cmd {
1687         HWSIM_TM_CMD_SET_PS             = 0,
1688         HWSIM_TM_CMD_GET_PS             = 1,
1689         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1690         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1691 };
1692
1693 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1694         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1695         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1696 };
1697
1698 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1699                                        struct ieee80211_vif *vif,
1700                                        void *data, int len)
1701 {
1702         struct mac80211_hwsim_data *hwsim = hw->priv;
1703         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1704         struct sk_buff *skb;
1705         int err, ps;
1706
1707         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1708                         hwsim_testmode_policy);
1709         if (err)
1710                 return err;
1711
1712         if (!tb[HWSIM_TM_ATTR_CMD])
1713                 return -EINVAL;
1714
1715         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1716         case HWSIM_TM_CMD_SET_PS:
1717                 if (!tb[HWSIM_TM_ATTR_PS])
1718                         return -EINVAL;
1719                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1720                 return hwsim_fops_ps_write(hwsim, ps);
1721         case HWSIM_TM_CMD_GET_PS:
1722                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1723                                                 nla_total_size(sizeof(u32)));
1724                 if (!skb)
1725                         return -ENOMEM;
1726                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1727                         goto nla_put_failure;
1728                 return cfg80211_testmode_reply(skb);
1729         case HWSIM_TM_CMD_STOP_QUEUES:
1730                 ieee80211_stop_queues(hw);
1731                 return 0;
1732         case HWSIM_TM_CMD_WAKE_QUEUES:
1733                 ieee80211_wake_queues(hw);
1734                 return 0;
1735         default:
1736                 return -EOPNOTSUPP;
1737         }
1738
1739  nla_put_failure:
1740         kfree_skb(skb);
1741         return -ENOBUFS;
1742 }
1743 #endif
1744
1745 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1746                                        struct ieee80211_vif *vif,
1747                                        enum ieee80211_ampdu_mlme_action action,
1748                                        struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1749                                        u8 buf_size)
1750 {
1751         switch (action) {
1752         case IEEE80211_AMPDU_TX_START:
1753                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1754                 break;
1755         case IEEE80211_AMPDU_TX_STOP_CONT:
1756         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1757         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1758                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1759                 break;
1760         case IEEE80211_AMPDU_TX_OPERATIONAL:
1761                 break;
1762         case IEEE80211_AMPDU_RX_START:
1763         case IEEE80211_AMPDU_RX_STOP:
1764                 break;
1765         default:
1766                 return -EOPNOTSUPP;
1767         }
1768
1769         return 0;
1770 }
1771
1772 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1773                                  struct ieee80211_vif *vif,
1774                                  u32 queues, bool drop)
1775 {
1776         /* Not implemented, queues only on kernel side */
1777 }
1778
1779 static void hw_scan_work(struct work_struct *work)
1780 {
1781         struct mac80211_hwsim_data *hwsim =
1782                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1783         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1784         int dwell, i;
1785
1786         mutex_lock(&hwsim->mutex);
1787         if (hwsim->scan_chan_idx >= req->n_channels) {
1788                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1789                 ieee80211_scan_completed(hwsim->hw, false);
1790                 hwsim->hw_scan_request = NULL;
1791                 hwsim->hw_scan_vif = NULL;
1792                 hwsim->tmp_chan = NULL;
1793                 mutex_unlock(&hwsim->mutex);
1794                 return;
1795         }
1796
1797         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1798                     req->channels[hwsim->scan_chan_idx]->center_freq);
1799
1800         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1801         if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
1802             !req->n_ssids) {
1803                 dwell = 120;
1804         } else {
1805                 dwell = 30;
1806                 /* send probes */
1807                 for (i = 0; i < req->n_ssids; i++) {
1808                         struct sk_buff *probe;
1809
1810                         probe = ieee80211_probereq_get(hwsim->hw,
1811                                                        hwsim->scan_addr,
1812                                                        req->ssids[i].ssid,
1813                                                        req->ssids[i].ssid_len,
1814                                                        req->ie_len);
1815                         if (!probe)
1816                                 continue;
1817
1818                         if (req->ie_len)
1819                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1820                                        req->ie_len);
1821
1822                         local_bh_disable();
1823                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1824                                                 hwsim->tmp_chan);
1825                         local_bh_enable();
1826                 }
1827         }
1828         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1829                                      msecs_to_jiffies(dwell));
1830         hwsim->scan_chan_idx++;
1831         mutex_unlock(&hwsim->mutex);
1832 }
1833
1834 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1835                                   struct ieee80211_vif *vif,
1836                                   struct ieee80211_scan_request *hw_req)
1837 {
1838         struct mac80211_hwsim_data *hwsim = hw->priv;
1839         struct cfg80211_scan_request *req = &hw_req->req;
1840
1841         mutex_lock(&hwsim->mutex);
1842         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1843                 mutex_unlock(&hwsim->mutex);
1844                 return -EBUSY;
1845         }
1846         hwsim->hw_scan_request = req;
1847         hwsim->hw_scan_vif = vif;
1848         hwsim->scan_chan_idx = 0;
1849         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1850                 get_random_mask_addr(hwsim->scan_addr,
1851                                      hw_req->req.mac_addr,
1852                                      hw_req->req.mac_addr_mask);
1853         else
1854                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
1855         mutex_unlock(&hwsim->mutex);
1856
1857         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
1858
1859         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
1860
1861         return 0;
1862 }
1863
1864 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
1865                                           struct ieee80211_vif *vif)
1866 {
1867         struct mac80211_hwsim_data *hwsim = hw->priv;
1868
1869         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
1870
1871         cancel_delayed_work_sync(&hwsim->hw_scan);
1872
1873         mutex_lock(&hwsim->mutex);
1874         ieee80211_scan_completed(hwsim->hw, true);
1875         hwsim->tmp_chan = NULL;
1876         hwsim->hw_scan_request = NULL;
1877         hwsim->hw_scan_vif = NULL;
1878         mutex_unlock(&hwsim->mutex);
1879 }
1880
1881 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
1882                                    struct ieee80211_vif *vif,
1883                                    const u8 *mac_addr)
1884 {
1885         struct mac80211_hwsim_data *hwsim = hw->priv;
1886
1887         mutex_lock(&hwsim->mutex);
1888
1889         if (hwsim->scanning) {
1890                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1891                 goto out;
1892         }
1893
1894         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1895
1896         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
1897         hwsim->scanning = true;
1898
1899 out:
1900         mutex_unlock(&hwsim->mutex);
1901 }
1902
1903 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
1904                                             struct ieee80211_vif *vif)
1905 {
1906         struct mac80211_hwsim_data *hwsim = hw->priv;
1907
1908         mutex_lock(&hwsim->mutex);
1909
1910         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1911         hwsim->scanning = false;
1912         memset(hwsim->scan_addr, 0, ETH_ALEN);
1913
1914         mutex_unlock(&hwsim->mutex);
1915 }
1916
1917 static void hw_roc_done(struct work_struct *work)
1918 {
1919         struct mac80211_hwsim_data *hwsim =
1920                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
1921
1922         mutex_lock(&hwsim->mutex);
1923         ieee80211_remain_on_channel_expired(hwsim->hw);
1924         hwsim->tmp_chan = NULL;
1925         mutex_unlock(&hwsim->mutex);
1926
1927         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
1928 }
1929
1930 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
1931                               struct ieee80211_vif *vif,
1932                               struct ieee80211_channel *chan,
1933                               int duration,
1934                               enum ieee80211_roc_type type)
1935 {
1936         struct mac80211_hwsim_data *hwsim = hw->priv;
1937
1938         mutex_lock(&hwsim->mutex);
1939         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
1940                 mutex_unlock(&hwsim->mutex);
1941                 return -EBUSY;
1942         }
1943
1944         hwsim->tmp_chan = chan;
1945         mutex_unlock(&hwsim->mutex);
1946
1947         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
1948                     chan->center_freq, duration);
1949
1950         ieee80211_ready_on_channel(hw);
1951
1952         ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
1953                                      msecs_to_jiffies(duration));
1954         return 0;
1955 }
1956
1957 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
1958 {
1959         struct mac80211_hwsim_data *hwsim = hw->priv;
1960
1961         cancel_delayed_work_sync(&hwsim->roc_done);
1962
1963         mutex_lock(&hwsim->mutex);
1964         hwsim->tmp_chan = NULL;
1965         mutex_unlock(&hwsim->mutex);
1966
1967         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
1968
1969         return 0;
1970 }
1971
1972 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
1973                                       struct ieee80211_chanctx_conf *ctx)
1974 {
1975         hwsim_set_chanctx_magic(ctx);
1976         wiphy_debug(hw->wiphy,
1977                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1978                     ctx->def.chan->center_freq, ctx->def.width,
1979                     ctx->def.center_freq1, ctx->def.center_freq2);
1980         return 0;
1981 }
1982
1983 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
1984                                           struct ieee80211_chanctx_conf *ctx)
1985 {
1986         wiphy_debug(hw->wiphy,
1987                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
1988                     ctx->def.chan->center_freq, ctx->def.width,
1989                     ctx->def.center_freq1, ctx->def.center_freq2);
1990         hwsim_check_chanctx_magic(ctx);
1991         hwsim_clear_chanctx_magic(ctx);
1992 }
1993
1994 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
1995                                           struct ieee80211_chanctx_conf *ctx,
1996                                           u32 changed)
1997 {
1998         hwsim_check_chanctx_magic(ctx);
1999         wiphy_debug(hw->wiphy,
2000                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2001                     ctx->def.chan->center_freq, ctx->def.width,
2002                     ctx->def.center_freq1, ctx->def.center_freq2);
2003 }
2004
2005 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2006                                              struct ieee80211_vif *vif,
2007                                              struct ieee80211_chanctx_conf *ctx)
2008 {
2009         hwsim_check_magic(vif);
2010         hwsim_check_chanctx_magic(ctx);
2011
2012         return 0;
2013 }
2014
2015 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2016                                                 struct ieee80211_vif *vif,
2017                                                 struct ieee80211_chanctx_conf *ctx)
2018 {
2019         hwsim_check_magic(vif);
2020         hwsim_check_chanctx_magic(ctx);
2021 }
2022
2023 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2024         "tx_pkts_nic",
2025         "tx_bytes_nic",
2026         "rx_pkts_nic",
2027         "rx_bytes_nic",
2028         "d_tx_dropped",
2029         "d_tx_failed",
2030         "d_ps_mode",
2031         "d_group",
2032         "d_tx_power",
2033 };
2034
2035 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2036
2037 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2038                                           struct ieee80211_vif *vif,
2039                                           u32 sset, u8 *data)
2040 {
2041         if (sset == ETH_SS_STATS)
2042                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2043                        sizeof(mac80211_hwsim_gstrings_stats));
2044 }
2045
2046 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2047                                             struct ieee80211_vif *vif, int sset)
2048 {
2049         if (sset == ETH_SS_STATS)
2050                 return MAC80211_HWSIM_SSTATS_LEN;
2051         return 0;
2052 }
2053
2054 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2055                                         struct ieee80211_vif *vif,
2056                                         struct ethtool_stats *stats, u64 *data)
2057 {
2058         struct mac80211_hwsim_data *ar = hw->priv;
2059         int i = 0;
2060
2061         data[i++] = ar->tx_pkts;
2062         data[i++] = ar->tx_bytes;
2063         data[i++] = ar->rx_pkts;
2064         data[i++] = ar->rx_bytes;
2065         data[i++] = ar->tx_dropped;
2066         data[i++] = ar->tx_failed;
2067         data[i++] = ar->ps;
2068         data[i++] = ar->group;
2069         data[i++] = ar->power_level;
2070
2071         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2072 }
2073
2074 static const struct ieee80211_ops mac80211_hwsim_ops = {
2075         .tx = mac80211_hwsim_tx,
2076         .start = mac80211_hwsim_start,
2077         .stop = mac80211_hwsim_stop,
2078         .add_interface = mac80211_hwsim_add_interface,
2079         .change_interface = mac80211_hwsim_change_interface,
2080         .remove_interface = mac80211_hwsim_remove_interface,
2081         .config = mac80211_hwsim_config,
2082         .configure_filter = mac80211_hwsim_configure_filter,
2083         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2084         .sta_add = mac80211_hwsim_sta_add,
2085         .sta_remove = mac80211_hwsim_sta_remove,
2086         .sta_notify = mac80211_hwsim_sta_notify,
2087         .set_tim = mac80211_hwsim_set_tim,
2088         .conf_tx = mac80211_hwsim_conf_tx,
2089         .get_survey = mac80211_hwsim_get_survey,
2090         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2091         .ampdu_action = mac80211_hwsim_ampdu_action,
2092         .sw_scan_start = mac80211_hwsim_sw_scan,
2093         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2094         .flush = mac80211_hwsim_flush,
2095         .get_tsf = mac80211_hwsim_get_tsf,
2096         .set_tsf = mac80211_hwsim_set_tsf,
2097         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2098         .get_et_stats = mac80211_hwsim_get_et_stats,
2099         .get_et_strings = mac80211_hwsim_get_et_strings,
2100 };
2101
2102 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2103
2104 struct hwsim_new_radio_params {
2105         unsigned int channels;
2106         const char *reg_alpha2;
2107         const struct ieee80211_regdomain *regd;
2108         bool reg_strict;
2109         bool p2p_device;
2110         bool use_chanctx;
2111         bool destroy_on_close;
2112         const char *hwname;
2113         bool no_vif;
2114 };
2115
2116 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2117                                    struct genl_info *info)
2118 {
2119         if (info)
2120                 genl_notify(&hwsim_genl_family, mcast_skb,
2121                             genl_info_net(info), info->snd_portid,
2122                             HWSIM_MCGRP_CONFIG, info->nlhdr, GFP_KERNEL);
2123         else
2124                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2125                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2126 }
2127
2128 static int append_radio_msg(struct sk_buff *skb, int id,
2129                             struct hwsim_new_radio_params *param)
2130 {
2131         int ret;
2132
2133         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2134         if (ret < 0)
2135                 return ret;
2136
2137         if (param->channels) {
2138                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2139                 if (ret < 0)
2140                         return ret;
2141         }
2142
2143         if (param->reg_alpha2) {
2144                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2145                               param->reg_alpha2);
2146                 if (ret < 0)
2147                         return ret;
2148         }
2149
2150         if (param->regd) {
2151                 int i;
2152
2153                 for (i = 0; hwsim_world_regdom_custom[i] != param->regd &&
2154                      i < ARRAY_SIZE(hwsim_world_regdom_custom); i++)
2155                         ;
2156
2157                 if (i < ARRAY_SIZE(hwsim_world_regdom_custom)) {
2158                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2159                         if (ret < 0)
2160                                 return ret;
2161                 }
2162         }
2163
2164         if (param->reg_strict) {
2165                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2166                 if (ret < 0)
2167                         return ret;
2168         }
2169
2170         if (param->p2p_device) {
2171                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2172                 if (ret < 0)
2173                         return ret;
2174         }
2175
2176         if (param->use_chanctx) {
2177                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2178                 if (ret < 0)
2179                         return ret;
2180         }
2181
2182         if (param->hwname) {
2183                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2184                               strlen(param->hwname), param->hwname);
2185                 if (ret < 0)
2186                         return ret;
2187         }
2188
2189         return 0;
2190 }
2191
2192 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2193                                   struct hwsim_new_radio_params *param)
2194 {
2195         struct sk_buff *mcast_skb;
2196         void *data;
2197
2198         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2199         if (!mcast_skb)
2200                 return;
2201
2202         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2203                            HWSIM_CMD_NEW_RADIO);
2204         if (!data)
2205                 goto out_err;
2206
2207         if (append_radio_msg(mcast_skb, id, param) < 0)
2208                 goto out_err;
2209
2210         genlmsg_end(mcast_skb, data);
2211
2212         hwsim_mcast_config_msg(mcast_skb, info);
2213         return;
2214
2215 out_err:
2216         genlmsg_cancel(mcast_skb, data);
2217         nlmsg_free(mcast_skb);
2218 }
2219
2220 static int mac80211_hwsim_new_radio(struct genl_info *info,
2221                                     struct hwsim_new_radio_params *param)
2222 {
2223         int err;
2224         u8 addr[ETH_ALEN];
2225         struct mac80211_hwsim_data *data;
2226         struct ieee80211_hw *hw;
2227         enum ieee80211_band band;
2228         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2229         int idx;
2230
2231         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2232                 return -EINVAL;
2233
2234         spin_lock_bh(&hwsim_radio_lock);
2235         idx = hwsim_radio_idx++;
2236         spin_unlock_bh(&hwsim_radio_lock);
2237
2238         if (param->use_chanctx)
2239                 ops = &mac80211_hwsim_mchan_ops;
2240         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2241         if (!hw) {
2242                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2243                 err = -ENOMEM;
2244                 goto failed;
2245         }
2246         data = hw->priv;
2247         data->hw = hw;
2248
2249         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2250         if (IS_ERR(data->dev)) {
2251                 printk(KERN_DEBUG
2252                        "mac80211_hwsim: device_create failed (%ld)\n",
2253                        PTR_ERR(data->dev));
2254                 err = -ENOMEM;
2255                 goto failed_drvdata;
2256         }
2257         data->dev->driver = &mac80211_hwsim_driver.driver;
2258         err = device_bind_driver(data->dev);
2259         if (err != 0) {
2260                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2261                        err);
2262                 goto failed_bind;
2263         }
2264
2265         skb_queue_head_init(&data->pending);
2266
2267         SET_IEEE80211_DEV(hw, data->dev);
2268         memset(addr, 0, ETH_ALEN);
2269         addr[0] = 0x02;
2270         addr[3] = idx >> 8;
2271         addr[4] = idx;
2272         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2273         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2274         data->addresses[1].addr[0] |= 0x40;
2275         hw->wiphy->n_addresses = 2;
2276         hw->wiphy->addresses = data->addresses;
2277
2278         data->channels = param->channels;
2279         data->use_chanctx = param->use_chanctx;
2280         data->idx = idx;
2281         data->destroy_on_close = param->destroy_on_close;
2282         if (info)
2283                 data->portid = info->snd_portid;
2284
2285         if (data->use_chanctx) {
2286                 hw->wiphy->max_scan_ssids = 255;
2287                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2288                 hw->wiphy->max_remain_on_channel_duration = 1000;
2289                 /* For channels > 1 DFS is not allowed */
2290                 hw->wiphy->n_iface_combinations = 1;
2291                 hw->wiphy->iface_combinations = &data->if_combination;
2292                 if (param->p2p_device)
2293                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2294                 else
2295                         data->if_combination = hwsim_if_comb[0];
2296                 data->if_combination.num_different_channels = data->channels;
2297         } else if (param->p2p_device) {
2298                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2299                 hw->wiphy->n_iface_combinations =
2300                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2301         } else {
2302                 hw->wiphy->iface_combinations = hwsim_if_comb;
2303                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2304         }
2305
2306         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2307         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2308
2309         hw->queues = 5;
2310         hw->offchannel_tx_hw_queue = 4;
2311         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2312                                      BIT(NL80211_IFTYPE_AP) |
2313                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2314                                      BIT(NL80211_IFTYPE_P2P_GO) |
2315                                      BIT(NL80211_IFTYPE_ADHOC) |
2316                                      BIT(NL80211_IFTYPE_MESH_POINT);
2317
2318         if (param->p2p_device)
2319                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2320
2321         hw->flags = IEEE80211_HW_MFP_CAPABLE |
2322                     IEEE80211_HW_SIGNAL_DBM |
2323                     IEEE80211_HW_AMPDU_AGGREGATION |
2324                     IEEE80211_HW_WANT_MONITOR_VIF |
2325                     IEEE80211_HW_QUEUE_CONTROL |
2326                     IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
2327                     IEEE80211_HW_CHANCTX_STA_CSA;
2328         if (rctbl)
2329                 hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
2330
2331         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2332                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2333                             WIPHY_FLAG_AP_UAPSD |
2334                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2335         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2336                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2337                                NL80211_FEATURE_STATIC_SMPS |
2338                                NL80211_FEATURE_DYNAMIC_SMPS |
2339                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2340
2341         /* ask mac80211 to reserve space for magic */
2342         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2343         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2344         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2345
2346         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2347                 sizeof(hwsim_channels_2ghz));
2348         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2349                 sizeof(hwsim_channels_5ghz));
2350         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2351
2352         for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
2353                 struct ieee80211_supported_band *sband = &data->bands[band];
2354                 switch (band) {
2355                 case IEEE80211_BAND_2GHZ:
2356                         sband->channels = data->channels_2ghz;
2357                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2358                         sband->bitrates = data->rates;
2359                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2360                         break;
2361                 case IEEE80211_BAND_5GHZ:
2362                         sband->channels = data->channels_5ghz;
2363                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2364                         sband->bitrates = data->rates + 4;
2365                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2366                         break;
2367                 default:
2368                         continue;
2369                 }
2370
2371                 sband->ht_cap.ht_supported = true;
2372                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2373                                     IEEE80211_HT_CAP_GRN_FLD |
2374                                     IEEE80211_HT_CAP_SGI_20 |
2375                                     IEEE80211_HT_CAP_SGI_40 |
2376                                     IEEE80211_HT_CAP_DSSSCCK40;
2377                 sband->ht_cap.ampdu_factor = 0x3;
2378                 sband->ht_cap.ampdu_density = 0x6;
2379                 memset(&sband->ht_cap.mcs, 0,
2380                        sizeof(sband->ht_cap.mcs));
2381                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2382                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2383                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2384
2385                 hw->wiphy->bands[band] = sband;
2386
2387                 sband->vht_cap.vht_supported = true;
2388                 sband->vht_cap.cap =
2389                         IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2390                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2391                         IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2392                         IEEE80211_VHT_CAP_RXLDPC |
2393                         IEEE80211_VHT_CAP_SHORT_GI_80 |
2394                         IEEE80211_VHT_CAP_SHORT_GI_160 |
2395                         IEEE80211_VHT_CAP_TXSTBC |
2396                         IEEE80211_VHT_CAP_RXSTBC_1 |
2397                         IEEE80211_VHT_CAP_RXSTBC_2 |
2398                         IEEE80211_VHT_CAP_RXSTBC_3 |
2399                         IEEE80211_VHT_CAP_RXSTBC_4 |
2400                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2401                 sband->vht_cap.vht_mcs.rx_mcs_map =
2402                         cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
2403                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
2404                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2405                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
2406                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
2407                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2408                                     IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2409                                     IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
2410                 sband->vht_cap.vht_mcs.tx_mcs_map =
2411                         sband->vht_cap.vht_mcs.rx_mcs_map;
2412         }
2413
2414         /* By default all radios belong to the first group */
2415         data->group = 1;
2416         mutex_init(&data->mutex);
2417
2418         /* Enable frame retransmissions for lossy channels */
2419         hw->max_rates = 4;
2420         hw->max_rate_tries = 11;
2421
2422         if (param->reg_strict)
2423                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2424         if (param->regd) {
2425                 data->regd = param->regd;
2426                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2427                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2428                 /* give the regulatory workqueue a chance to run */
2429                 schedule_timeout_interruptible(1);
2430         }
2431
2432         if (param->no_vif)
2433                 hw->flags |= IEEE80211_HW_NO_AUTO_VIF;
2434
2435         err = ieee80211_register_hw(hw);
2436         if (err < 0) {
2437                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2438                        err);
2439                 goto failed_hw;
2440         }
2441
2442         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2443
2444         if (param->reg_alpha2) {
2445                 data->alpha2[0] = param->reg_alpha2[0];
2446                 data->alpha2[1] = param->reg_alpha2[1];
2447                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2448         }
2449
2450         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2451         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2452         debugfs_create_file("group", 0666, data->debugfs, data,
2453                             &hwsim_fops_group);
2454         if (!data->use_chanctx)
2455                 debugfs_create_file("dfs_simulate_radar", 0222,
2456                                     data->debugfs,
2457                                     data, &hwsim_simulate_radar);
2458
2459         tasklet_hrtimer_init(&data->beacon_timer,
2460                              mac80211_hwsim_beacon,
2461                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2462
2463         spin_lock_bh(&hwsim_radio_lock);
2464         list_add_tail(&data->list, &hwsim_radios);
2465         spin_unlock_bh(&hwsim_radio_lock);
2466
2467         if (idx > 0)
2468                 hwsim_mcast_new_radio(idx, info, param);
2469
2470         return idx;
2471
2472 failed_hw:
2473         device_release_driver(data->dev);
2474 failed_bind:
2475         device_unregister(data->dev);
2476 failed_drvdata:
2477         ieee80211_free_hw(hw);
2478 failed:
2479         return err;
2480 }
2481
2482 static void hwsim_mcast_del_radio(int id, const char *hwname,
2483                                   struct genl_info *info)
2484 {
2485         struct sk_buff *skb;
2486         void *data;
2487         int ret;
2488
2489         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2490         if (!skb)
2491                 return;
2492
2493         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2494                            HWSIM_CMD_DEL_RADIO);
2495         if (!data)
2496                 goto error;
2497
2498         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2499         if (ret < 0)
2500                 goto error;
2501
2502         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2503                       hwname);
2504         if (ret < 0)
2505                 goto error;
2506
2507         genlmsg_end(skb, data);
2508
2509         hwsim_mcast_config_msg(skb, info);
2510
2511         return;
2512
2513 error:
2514         nlmsg_free(skb);
2515 }
2516
2517 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2518                                      const char *hwname,
2519                                      struct genl_info *info)
2520 {
2521         hwsim_mcast_del_radio(data->idx, hwname, info);
2522         debugfs_remove_recursive(data->debugfs);
2523         ieee80211_unregister_hw(data->hw);
2524         device_release_driver(data->dev);
2525         device_unregister(data->dev);
2526         ieee80211_free_hw(data->hw);
2527 }
2528
2529 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2530                                     struct mac80211_hwsim_data *data,
2531                                     u32 portid, u32 seq,
2532                                     struct netlink_callback *cb, int flags)
2533 {
2534         void *hdr;
2535         struct hwsim_new_radio_params param = { };
2536         int res = -EMSGSIZE;
2537
2538         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2539                           HWSIM_CMD_GET_RADIO);
2540         if (!hdr)
2541                 return -EMSGSIZE;
2542
2543         if (cb)
2544                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2545
2546         param.reg_alpha2 = data->alpha2;
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);