Wey-Yi Guy | 7335613 | 2011-11-10 06:55:11 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. |
| 4 | * |
| 5 | * Portions of this file are derived from the ipw3945 project, as well |
| 6 | * as portions of the ieee80211 subsystem header files. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of version 2 of the GNU General Public License as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 15 | * more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along with |
| 18 | * this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA |
| 20 | * |
| 21 | * The full GNU General Public License is included in this distribution in the |
| 22 | * file called LICENSE. |
| 23 | * |
| 24 | * Contact Information: |
| 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
| 26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 27 | * |
| 28 | *****************************************************************************/ |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/module.h> |
| 31 | #include <linux/init.h> |
| 32 | #include <linux/slab.h> |
| 33 | #include <linux/dma-mapping.h> |
| 34 | #include <linux/delay.h> |
| 35 | #include <linux/sched.h> |
| 36 | #include <linux/skbuff.h> |
| 37 | #include <linux/netdevice.h> |
| 38 | #include <linux/firmware.h> |
| 39 | #include <linux/etherdevice.h> |
| 40 | #include <linux/if_arp.h> |
| 41 | |
| 42 | #include <net/mac80211.h> |
| 43 | |
| 44 | #include <asm/div64.h> |
| 45 | |
| 46 | #include "iwl-eeprom.h" |
| 47 | #include "iwl-dev.h" |
| 48 | #include "iwl-core.h" |
| 49 | #include "iwl-io.h" |
| 50 | #include "iwl-agn-calib.h" |
| 51 | #include "iwl-agn.h" |
| 52 | #include "iwl-shared.h" |
| 53 | #include "iwl-bus.h" |
| 54 | #include "iwl-trans.h" |
| 55 | |
| 56 | /***************************************************************************** |
| 57 | * |
| 58 | * mac80211 entry point functions |
| 59 | * |
| 60 | *****************************************************************************/ |
| 61 | |
| 62 | static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = { |
| 63 | { |
| 64 | .max = 1, |
| 65 | .types = BIT(NL80211_IFTYPE_STATION), |
| 66 | }, |
| 67 | { |
| 68 | .max = 1, |
| 69 | .types = BIT(NL80211_IFTYPE_AP), |
| 70 | }, |
| 71 | }; |
| 72 | |
| 73 | static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = { |
| 74 | { |
| 75 | .max = 2, |
| 76 | .types = BIT(NL80211_IFTYPE_STATION), |
| 77 | }, |
| 78 | }; |
| 79 | |
| 80 | static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = { |
| 81 | { |
| 82 | .max = 1, |
| 83 | .types = BIT(NL80211_IFTYPE_STATION), |
| 84 | }, |
| 85 | { |
| 86 | .max = 1, |
| 87 | .types = BIT(NL80211_IFTYPE_P2P_GO) | |
| 88 | BIT(NL80211_IFTYPE_AP), |
| 89 | }, |
| 90 | }; |
| 91 | |
| 92 | static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = { |
| 93 | { |
| 94 | .max = 2, |
| 95 | .types = BIT(NL80211_IFTYPE_STATION), |
| 96 | }, |
| 97 | { |
| 98 | .max = 1, |
| 99 | .types = BIT(NL80211_IFTYPE_P2P_CLIENT), |
| 100 | }, |
| 101 | }; |
| 102 | |
| 103 | static const struct ieee80211_iface_combination |
| 104 | iwlagn_iface_combinations_dualmode[] = { |
| 105 | { .num_different_channels = 1, |
| 106 | .max_interfaces = 2, |
| 107 | .beacon_int_infra_match = true, |
| 108 | .limits = iwlagn_sta_ap_limits, |
| 109 | .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits), |
| 110 | }, |
| 111 | { .num_different_channels = 1, |
| 112 | .max_interfaces = 2, |
| 113 | .limits = iwlagn_2sta_limits, |
| 114 | .n_limits = ARRAY_SIZE(iwlagn_2sta_limits), |
| 115 | }, |
| 116 | }; |
| 117 | |
| 118 | static const struct ieee80211_iface_combination |
| 119 | iwlagn_iface_combinations_p2p[] = { |
| 120 | { .num_different_channels = 1, |
| 121 | .max_interfaces = 2, |
| 122 | .beacon_int_infra_match = true, |
| 123 | .limits = iwlagn_p2p_sta_go_limits, |
| 124 | .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits), |
| 125 | }, |
| 126 | { .num_different_channels = 1, |
| 127 | .max_interfaces = 2, |
| 128 | .limits = iwlagn_p2p_2sta_limits, |
| 129 | .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits), |
| 130 | }, |
| 131 | }; |
| 132 | |
| 133 | /* |
| 134 | * Not a mac80211 entry point function, but it fits in with all the |
| 135 | * other mac80211 functions grouped here. |
| 136 | */ |
| 137 | int iwlagn_mac_setup_register(struct iwl_priv *priv, |
| 138 | struct iwlagn_ucode_capabilities *capa) |
| 139 | { |
| 140 | int ret; |
| 141 | struct ieee80211_hw *hw = priv->hw; |
| 142 | struct iwl_rxon_context *ctx; |
| 143 | |
| 144 | hw->rate_control_algorithm = "iwl-agn-rs"; |
| 145 | |
| 146 | /* Tell mac80211 our characteristics */ |
| 147 | hw->flags = IEEE80211_HW_SIGNAL_DBM | |
| 148 | IEEE80211_HW_AMPDU_AGGREGATION | |
| 149 | IEEE80211_HW_NEED_DTIM_PERIOD | |
| 150 | IEEE80211_HW_SPECTRUM_MGMT | |
| 151 | IEEE80211_HW_REPORTS_TX_ACK_STATUS; |
| 152 | |
| 153 | /* |
| 154 | * Including the following line will crash some AP's. This |
| 155 | * workaround removes the stimulus which causes the crash until |
| 156 | * the AP software can be fixed. |
| 157 | hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF; |
| 158 | */ |
| 159 | |
| 160 | hw->flags |= IEEE80211_HW_SUPPORTS_PS | |
| 161 | IEEE80211_HW_SUPPORTS_DYNAMIC_PS; |
| 162 | |
| 163 | if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE) |
| 164 | hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS | |
| 165 | IEEE80211_HW_SUPPORTS_STATIC_SMPS; |
| 166 | |
| 167 | if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP) |
| 168 | hw->flags |= IEEE80211_HW_MFP_CAPABLE; |
| 169 | |
| 170 | hw->sta_data_size = sizeof(struct iwl_station_priv); |
| 171 | hw->vif_data_size = sizeof(struct iwl_vif_priv); |
| 172 | |
| 173 | for_each_context(priv, ctx) { |
| 174 | hw->wiphy->interface_modes |= ctx->interface_modes; |
| 175 | hw->wiphy->interface_modes |= ctx->exclusive_interface_modes; |
| 176 | } |
| 177 | |
| 178 | BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); |
| 179 | |
| 180 | if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) { |
| 181 | hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p; |
| 182 | hw->wiphy->n_iface_combinations = |
| 183 | ARRAY_SIZE(iwlagn_iface_combinations_p2p); |
| 184 | } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
| 185 | hw->wiphy->iface_combinations = |
| 186 | iwlagn_iface_combinations_dualmode; |
| 187 | hw->wiphy->n_iface_combinations = |
| 188 | ARRAY_SIZE(iwlagn_iface_combinations_dualmode); |
| 189 | } |
| 190 | |
| 191 | hw->wiphy->max_remain_on_channel_duration = 1000; |
| 192 | |
| 193 | hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY | |
| 194 | WIPHY_FLAG_DISABLE_BEACON_HINTS | |
| 195 | WIPHY_FLAG_IBSS_RSN; |
| 196 | |
| 197 | if (trans(priv)->ucode_wowlan.code.len && |
| 198 | device_can_wakeup(bus(priv)->dev)) { |
| 199 | hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT | |
| 200 | WIPHY_WOWLAN_DISCONNECT | |
| 201 | WIPHY_WOWLAN_EAP_IDENTITY_REQ | |
| 202 | WIPHY_WOWLAN_RFKILL_RELEASE; |
| 203 | if (!iwlagn_mod_params.sw_crypto) |
| 204 | hw->wiphy->wowlan.flags |= |
| 205 | WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | |
| 206 | WIPHY_WOWLAN_GTK_REKEY_FAILURE; |
| 207 | |
| 208 | hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS; |
| 209 | hw->wiphy->wowlan.pattern_min_len = |
| 210 | IWLAGN_WOWLAN_MIN_PATTERN_LEN; |
| 211 | hw->wiphy->wowlan.pattern_max_len = |
| 212 | IWLAGN_WOWLAN_MAX_PATTERN_LEN; |
| 213 | } |
| 214 | |
| 215 | if (iwlagn_mod_params.power_save) |
| 216 | hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| 217 | else |
| 218 | hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; |
| 219 | |
| 220 | hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; |
| 221 | /* we create the 802.11 header and a zero-length SSID element */ |
| 222 | hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2; |
| 223 | |
| 224 | /* Default value; 4 EDCA QOS priorities */ |
| 225 | hw->queues = 4; |
| 226 | |
| 227 | hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; |
| 228 | |
| 229 | if (priv->bands[IEEE80211_BAND_2GHZ].n_channels) |
| 230 | priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
| 231 | &priv->bands[IEEE80211_BAND_2GHZ]; |
| 232 | if (priv->bands[IEEE80211_BAND_5GHZ].n_channels) |
| 233 | priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = |
| 234 | &priv->bands[IEEE80211_BAND_5GHZ]; |
| 235 | |
| 236 | iwl_leds_init(priv); |
| 237 | |
| 238 | ret = ieee80211_register_hw(priv->hw); |
| 239 | if (ret) { |
| 240 | IWL_ERR(priv, "Failed to register hw (error %d)\n", ret); |
| 241 | return ret; |
| 242 | } |
| 243 | priv->mac80211_registered = 1; |
| 244 | |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | static int __iwl_up(struct iwl_priv *priv) |
| 249 | { |
| 250 | struct iwl_rxon_context *ctx; |
| 251 | int ret; |
| 252 | |
| 253 | lockdep_assert_held(&priv->shrd->mutex); |
| 254 | |
| 255 | if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) { |
| 256 | IWL_WARN(priv, "Exit pending; will not bring the NIC up\n"); |
| 257 | return -EIO; |
| 258 | } |
| 259 | |
| 260 | for_each_context(priv, ctx) { |
| 261 | ret = iwlagn_alloc_bcast_station(priv, ctx); |
| 262 | if (ret) { |
| 263 | iwl_dealloc_bcast_stations(priv); |
| 264 | return ret; |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | ret = iwlagn_run_init_ucode(priv); |
| 269 | if (ret) { |
| 270 | IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret); |
| 271 | goto error; |
| 272 | } |
| 273 | |
| 274 | ret = iwlagn_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR); |
| 275 | if (ret) { |
| 276 | IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret); |
| 277 | goto error; |
| 278 | } |
| 279 | |
| 280 | ret = iwl_alive_start(priv); |
| 281 | if (ret) |
| 282 | goto error; |
| 283 | return 0; |
| 284 | |
| 285 | error: |
| 286 | set_bit(STATUS_EXIT_PENDING, &priv->shrd->status); |
| 287 | __iwl_down(priv); |
| 288 | clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status); |
| 289 | |
| 290 | IWL_ERR(priv, "Unable to initialize device.\n"); |
| 291 | return ret; |
| 292 | } |
| 293 | |
| 294 | static int iwlagn_mac_start(struct ieee80211_hw *hw) |
| 295 | { |
| 296 | struct iwl_priv *priv = hw->priv; |
| 297 | int ret; |
| 298 | |
| 299 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 300 | |
| 301 | /* we should be verifying the device is ready to be opened */ |
| 302 | mutex_lock(&priv->shrd->mutex); |
| 303 | ret = __iwl_up(priv); |
| 304 | mutex_unlock(&priv->shrd->mutex); |
| 305 | if (ret) |
| 306 | return ret; |
| 307 | |
| 308 | IWL_DEBUG_INFO(priv, "Start UP work done.\n"); |
| 309 | |
| 310 | /* Now we should be done, and the READY bit should be set. */ |
| 311 | if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status))) |
| 312 | ret = -EIO; |
| 313 | |
| 314 | iwlagn_led_enable(priv); |
| 315 | |
| 316 | priv->is_open = 1; |
| 317 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 318 | return 0; |
| 319 | } |
| 320 | |
| 321 | static void iwlagn_mac_stop(struct ieee80211_hw *hw) |
| 322 | { |
| 323 | struct iwl_priv *priv = hw->priv; |
| 324 | |
| 325 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 326 | |
| 327 | if (!priv->is_open) |
| 328 | return; |
| 329 | |
| 330 | priv->is_open = 0; |
| 331 | |
| 332 | iwl_down(priv); |
| 333 | |
| 334 | flush_workqueue(priv->shrd->workqueue); |
| 335 | |
| 336 | /* User space software may expect getting rfkill changes |
| 337 | * even if interface is down */ |
| 338 | iwl_write32(bus(priv), CSR_INT, 0xFFFFFFFF); |
| 339 | iwl_enable_rfkill_int(priv); |
| 340 | |
| 341 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 342 | } |
| 343 | |
| 344 | static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw, |
| 345 | struct ieee80211_vif *vif, |
| 346 | struct cfg80211_gtk_rekey_data *data) |
| 347 | { |
| 348 | struct iwl_priv *priv = hw->priv; |
| 349 | |
| 350 | if (iwlagn_mod_params.sw_crypto) |
| 351 | return; |
| 352 | |
| 353 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 354 | mutex_lock(&priv->shrd->mutex); |
| 355 | |
| 356 | if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif) |
| 357 | goto out; |
| 358 | |
| 359 | memcpy(priv->kek, data->kek, NL80211_KEK_LEN); |
| 360 | memcpy(priv->kck, data->kck, NL80211_KCK_LEN); |
| 361 | priv->replay_ctr = |
| 362 | cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); |
| 363 | priv->have_rekey_data = true; |
| 364 | |
| 365 | out: |
| 366 | mutex_unlock(&priv->shrd->mutex); |
| 367 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 368 | } |
| 369 | |
| 370 | #ifdef CONFIG_PM_SLEEP |
| 371 | struct wowlan_key_data { |
| 372 | struct iwl_rxon_context *ctx; |
| 373 | struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc; |
| 374 | struct iwlagn_wowlan_tkip_params_cmd *tkip; |
| 375 | const u8 *bssid; |
| 376 | bool error, use_rsc_tsc, use_tkip; |
| 377 | }; |
| 378 | |
| 379 | static void iwlagn_convert_p1k(u16 *p1k, __le16 *out) |
| 380 | { |
| 381 | int i; |
| 382 | |
| 383 | for (i = 0; i < IWLAGN_P1K_SIZE; i++) |
| 384 | out[i] = cpu_to_le16(p1k[i]); |
| 385 | } |
| 386 | |
| 387 | static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw, |
| 388 | struct ieee80211_vif *vif, |
| 389 | struct ieee80211_sta *sta, |
| 390 | struct ieee80211_key_conf *key, |
| 391 | void *_data) |
| 392 | { |
| 393 | struct iwl_priv *priv = hw->priv; |
| 394 | struct wowlan_key_data *data = _data; |
| 395 | struct iwl_rxon_context *ctx = data->ctx; |
| 396 | struct aes_sc *aes_sc, *aes_tx_sc = NULL; |
| 397 | struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; |
| 398 | struct iwlagn_p1k_cache *rx_p1ks; |
| 399 | u8 *rx_mic_key; |
| 400 | struct ieee80211_key_seq seq; |
| 401 | u32 cur_rx_iv32 = 0; |
| 402 | u16 p1k[IWLAGN_P1K_SIZE]; |
| 403 | int ret, i; |
| 404 | |
| 405 | mutex_lock(&priv->shrd->mutex); |
| 406 | |
| 407 | if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 || |
| 408 | key->cipher == WLAN_CIPHER_SUITE_WEP104) && |
| 409 | !sta && !ctx->key_mapping_keys) |
| 410 | ret = iwl_set_default_wep_key(priv, ctx, key); |
| 411 | else |
| 412 | ret = iwl_set_dynamic_key(priv, ctx, key, sta); |
| 413 | |
| 414 | if (ret) { |
| 415 | IWL_ERR(priv, "Error setting key during suspend!\n"); |
| 416 | data->error = true; |
| 417 | } |
| 418 | |
| 419 | switch (key->cipher) { |
| 420 | case WLAN_CIPHER_SUITE_TKIP: |
| 421 | if (sta) { |
| 422 | tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; |
| 423 | tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; |
| 424 | |
| 425 | rx_p1ks = data->tkip->rx_uni; |
| 426 | |
| 427 | ieee80211_get_key_tx_seq(key, &seq); |
| 428 | tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); |
| 429 | tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); |
| 430 | |
| 431 | ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); |
| 432 | iwlagn_convert_p1k(p1k, data->tkip->tx.p1k); |
| 433 | |
| 434 | memcpy(data->tkip->mic_keys.tx, |
| 435 | &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], |
| 436 | IWLAGN_MIC_KEY_SIZE); |
| 437 | |
| 438 | rx_mic_key = data->tkip->mic_keys.rx_unicast; |
| 439 | } else { |
| 440 | tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; |
| 441 | rx_p1ks = data->tkip->rx_multi; |
| 442 | rx_mic_key = data->tkip->mic_keys.rx_mcast; |
| 443 | } |
| 444 | |
| 445 | /* |
| 446 | * For non-QoS this relies on the fact that both the uCode and |
| 447 | * mac80211 use TID 0 (as they need to to avoid replay attacks) |
| 448 | * for checking the IV in the frames. |
| 449 | */ |
| 450 | for (i = 0; i < IWLAGN_NUM_RSC; i++) { |
| 451 | ieee80211_get_key_rx_seq(key, i, &seq); |
| 452 | tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); |
| 453 | tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); |
| 454 | /* wrapping isn't allowed, AP must rekey */ |
| 455 | if (seq.tkip.iv32 > cur_rx_iv32) |
| 456 | cur_rx_iv32 = seq.tkip.iv32; |
| 457 | } |
| 458 | |
| 459 | ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k); |
| 460 | iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k); |
| 461 | ieee80211_get_tkip_rx_p1k(key, data->bssid, |
| 462 | cur_rx_iv32 + 1, p1k); |
| 463 | iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k); |
| 464 | |
| 465 | memcpy(rx_mic_key, |
| 466 | &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], |
| 467 | IWLAGN_MIC_KEY_SIZE); |
| 468 | |
| 469 | data->use_tkip = true; |
| 470 | data->use_rsc_tsc = true; |
| 471 | break; |
| 472 | case WLAN_CIPHER_SUITE_CCMP: |
| 473 | if (sta) { |
| 474 | u8 *pn = seq.ccmp.pn; |
| 475 | |
| 476 | aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; |
| 477 | aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; |
| 478 | |
| 479 | ieee80211_get_key_tx_seq(key, &seq); |
| 480 | aes_tx_sc->pn = cpu_to_le64( |
| 481 | (u64)pn[5] | |
| 482 | ((u64)pn[4] << 8) | |
| 483 | ((u64)pn[3] << 16) | |
| 484 | ((u64)pn[2] << 24) | |
| 485 | ((u64)pn[1] << 32) | |
| 486 | ((u64)pn[0] << 40)); |
| 487 | } else |
| 488 | aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; |
| 489 | |
| 490 | /* |
| 491 | * For non-QoS this relies on the fact that both the uCode and |
| 492 | * mac80211 use TID 0 for checking the IV in the frames. |
| 493 | */ |
| 494 | for (i = 0; i < IWLAGN_NUM_RSC; i++) { |
| 495 | u8 *pn = seq.ccmp.pn; |
| 496 | |
| 497 | ieee80211_get_key_rx_seq(key, i, &seq); |
| 498 | aes_sc->pn = cpu_to_le64( |
| 499 | (u64)pn[5] | |
| 500 | ((u64)pn[4] << 8) | |
| 501 | ((u64)pn[3] << 16) | |
| 502 | ((u64)pn[2] << 24) | |
| 503 | ((u64)pn[1] << 32) | |
| 504 | ((u64)pn[0] << 40)); |
| 505 | } |
| 506 | data->use_rsc_tsc = true; |
| 507 | break; |
| 508 | } |
| 509 | |
| 510 | mutex_unlock(&priv->shrd->mutex); |
| 511 | } |
| 512 | |
| 513 | static int iwlagn_send_patterns(struct iwl_priv *priv, |
| 514 | struct cfg80211_wowlan *wowlan) |
| 515 | { |
| 516 | struct iwlagn_wowlan_patterns_cmd *pattern_cmd; |
| 517 | struct iwl_host_cmd cmd = { |
| 518 | .id = REPLY_WOWLAN_PATTERNS, |
| 519 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, |
| 520 | .flags = CMD_SYNC, |
| 521 | }; |
| 522 | int i, err; |
| 523 | |
| 524 | if (!wowlan->n_patterns) |
| 525 | return 0; |
| 526 | |
| 527 | cmd.len[0] = sizeof(*pattern_cmd) + |
| 528 | wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern); |
| 529 | |
| 530 | pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); |
| 531 | if (!pattern_cmd) |
| 532 | return -ENOMEM; |
| 533 | |
| 534 | pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); |
| 535 | |
| 536 | for (i = 0; i < wowlan->n_patterns; i++) { |
| 537 | int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); |
| 538 | |
| 539 | memcpy(&pattern_cmd->patterns[i].mask, |
| 540 | wowlan->patterns[i].mask, mask_len); |
| 541 | memcpy(&pattern_cmd->patterns[i].pattern, |
| 542 | wowlan->patterns[i].pattern, |
| 543 | wowlan->patterns[i].pattern_len); |
| 544 | pattern_cmd->patterns[i].mask_size = mask_len; |
| 545 | pattern_cmd->patterns[i].pattern_size = |
| 546 | wowlan->patterns[i].pattern_len; |
| 547 | } |
| 548 | |
| 549 | cmd.data[0] = pattern_cmd; |
| 550 | err = iwl_trans_send_cmd(trans(priv), &cmd); |
| 551 | kfree(pattern_cmd); |
| 552 | return err; |
| 553 | } |
| 554 | |
| 555 | static int iwlagn_mac_suspend(struct ieee80211_hw *hw, |
| 556 | struct cfg80211_wowlan *wowlan) |
| 557 | { |
| 558 | struct iwl_priv *priv = hw->priv; |
| 559 | struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd; |
| 560 | struct iwl_rxon_cmd rxon; |
| 561 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| 562 | struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd; |
| 563 | struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {}; |
| 564 | struct wowlan_key_data key_data = { |
| 565 | .ctx = ctx, |
| 566 | .bssid = ctx->active.bssid_addr, |
| 567 | .use_rsc_tsc = false, |
| 568 | .tkip = &tkip_cmd, |
| 569 | .use_tkip = false, |
| 570 | }; |
| 571 | struct iwlagn_d3_config_cmd d3_cfg_cmd = {}; |
| 572 | int ret, i; |
| 573 | u16 seq; |
| 574 | |
| 575 | if (WARN_ON(!wowlan)) |
| 576 | return -EINVAL; |
| 577 | |
| 578 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 579 | mutex_lock(&priv->shrd->mutex); |
| 580 | |
| 581 | /* Don't attempt WoWLAN when not associated, tear down instead. */ |
| 582 | if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION || |
| 583 | !iwl_is_associated_ctx(ctx)) { |
| 584 | ret = 1; |
| 585 | goto out; |
| 586 | } |
| 587 | |
| 588 | key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); |
| 589 | if (!key_data.rsc_tsc) { |
| 590 | ret = -ENOMEM; |
| 591 | goto out; |
| 592 | } |
| 593 | |
| 594 | memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd)); |
| 595 | |
| 596 | /* |
| 597 | * We know the last used seqno, and the uCode expects to know that |
| 598 | * one, it will increment before TX. |
| 599 | */ |
| 600 | seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ; |
| 601 | wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq); |
| 602 | |
| 603 | /* |
| 604 | * For QoS counters, we store the one to use next, so subtract 0x10 |
| 605 | * since the uCode will add 0x10 before using the value. |
| 606 | */ |
| 607 | for (i = 0; i < 8; i++) { |
| 608 | seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number; |
| 609 | seq -= 0x10; |
| 610 | wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq); |
| 611 | } |
| 612 | |
| 613 | if (wowlan->disconnect) |
| 614 | wakeup_filter_cmd.enabled |= |
| 615 | cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS | |
| 616 | IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE); |
| 617 | if (wowlan->magic_pkt) |
| 618 | wakeup_filter_cmd.enabled |= |
| 619 | cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET); |
| 620 | if (wowlan->gtk_rekey_failure) |
| 621 | wakeup_filter_cmd.enabled |= |
| 622 | cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL); |
| 623 | if (wowlan->eap_identity_req) |
| 624 | wakeup_filter_cmd.enabled |= |
| 625 | cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ); |
| 626 | if (wowlan->four_way_handshake) |
| 627 | wakeup_filter_cmd.enabled |= |
| 628 | cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE); |
| 629 | if (wowlan->n_patterns) |
| 630 | wakeup_filter_cmd.enabled |= |
| 631 | cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH); |
| 632 | |
| 633 | if (wowlan->rfkill_release) |
| 634 | d3_cfg_cmd.wakeup_flags |= |
| 635 | cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL); |
| 636 | |
| 637 | iwl_scan_cancel_timeout(priv, 200); |
| 638 | |
| 639 | memcpy(&rxon, &ctx->active, sizeof(rxon)); |
| 640 | |
| 641 | iwl_trans_stop_device(trans(priv)); |
| 642 | |
| 643 | priv->shrd->wowlan = true; |
| 644 | |
| 645 | ret = iwlagn_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN); |
| 646 | if (ret) |
| 647 | goto error; |
| 648 | |
| 649 | /* now configure WoWLAN ucode */ |
| 650 | ret = iwl_alive_start(priv); |
| 651 | if (ret) |
| 652 | goto error; |
| 653 | |
| 654 | memcpy(&ctx->staging, &rxon, sizeof(rxon)); |
| 655 | ret = iwlagn_commit_rxon(priv, ctx); |
| 656 | if (ret) |
| 657 | goto error; |
| 658 | |
| 659 | ret = iwl_power_update_mode(priv, true); |
| 660 | if (ret) |
| 661 | goto error; |
| 662 | |
| 663 | if (!iwlagn_mod_params.sw_crypto) { |
| 664 | /* mark all keys clear */ |
| 665 | priv->ucode_key_table = 0; |
| 666 | ctx->key_mapping_keys = 0; |
| 667 | |
| 668 | /* |
| 669 | * This needs to be unlocked due to lock ordering |
| 670 | * constraints. Since we're in the suspend path |
| 671 | * that isn't really a problem though. |
| 672 | */ |
| 673 | mutex_unlock(&priv->shrd->mutex); |
| 674 | ieee80211_iter_keys(priv->hw, ctx->vif, |
| 675 | iwlagn_wowlan_program_keys, |
| 676 | &key_data); |
| 677 | mutex_lock(&priv->shrd->mutex); |
| 678 | if (key_data.error) { |
| 679 | ret = -EIO; |
| 680 | goto error; |
| 681 | } |
| 682 | |
| 683 | if (key_data.use_rsc_tsc) { |
| 684 | struct iwl_host_cmd rsc_tsc_cmd = { |
| 685 | .id = REPLY_WOWLAN_TSC_RSC_PARAMS, |
| 686 | .flags = CMD_SYNC, |
| 687 | .data[0] = key_data.rsc_tsc, |
| 688 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, |
| 689 | .len[0] = sizeof(*key_data.rsc_tsc), |
| 690 | }; |
| 691 | |
| 692 | ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd); |
| 693 | if (ret) |
| 694 | goto error; |
| 695 | } |
| 696 | |
| 697 | if (key_data.use_tkip) { |
| 698 | ret = iwl_trans_send_cmd_pdu(trans(priv), |
| 699 | REPLY_WOWLAN_TKIP_PARAMS, |
| 700 | CMD_SYNC, sizeof(tkip_cmd), |
| 701 | &tkip_cmd); |
| 702 | if (ret) |
| 703 | goto error; |
| 704 | } |
| 705 | |
| 706 | if (priv->have_rekey_data) { |
| 707 | memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); |
| 708 | memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN); |
| 709 | kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); |
| 710 | memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN); |
| 711 | kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); |
| 712 | kek_kck_cmd.replay_ctr = priv->replay_ctr; |
| 713 | |
| 714 | ret = iwl_trans_send_cmd_pdu(trans(priv), |
| 715 | REPLY_WOWLAN_KEK_KCK_MATERIAL, |
| 716 | CMD_SYNC, sizeof(kek_kck_cmd), |
| 717 | &kek_kck_cmd); |
| 718 | if (ret) |
| 719 | goto error; |
| 720 | } |
| 721 | } |
| 722 | |
| 723 | ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_D3_CONFIG, CMD_SYNC, |
| 724 | sizeof(d3_cfg_cmd), &d3_cfg_cmd); |
| 725 | if (ret) |
| 726 | goto error; |
| 727 | |
| 728 | ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER, |
| 729 | CMD_SYNC, sizeof(wakeup_filter_cmd), |
| 730 | &wakeup_filter_cmd); |
| 731 | if (ret) |
| 732 | goto error; |
| 733 | |
| 734 | ret = iwlagn_send_patterns(priv, wowlan); |
| 735 | if (ret) |
| 736 | goto error; |
| 737 | |
| 738 | device_set_wakeup_enable(bus(priv)->dev, true); |
| 739 | |
| 740 | /* Now let the ucode operate on its own */ |
| 741 | iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET, |
| 742 | CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE); |
| 743 | |
| 744 | goto out; |
| 745 | |
| 746 | error: |
| 747 | priv->shrd->wowlan = false; |
| 748 | iwlagn_prepare_restart(priv); |
| 749 | ieee80211_restart_hw(priv->hw); |
| 750 | out: |
| 751 | mutex_unlock(&priv->shrd->mutex); |
| 752 | kfree(key_data.rsc_tsc); |
| 753 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 754 | |
| 755 | return ret; |
| 756 | } |
| 757 | |
| 758 | static int iwlagn_mac_resume(struct ieee80211_hw *hw) |
| 759 | { |
| 760 | struct iwl_priv *priv = hw->priv; |
| 761 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| 762 | struct ieee80211_vif *vif; |
| 763 | unsigned long flags; |
| 764 | u32 base, status = 0xffffffff; |
| 765 | int ret = -EIO; |
| 766 | |
| 767 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 768 | mutex_lock(&priv->shrd->mutex); |
| 769 | |
| 770 | iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR, |
| 771 | CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE); |
| 772 | |
| 773 | base = priv->device_pointers.error_event_table; |
| 774 | if (iwlagn_hw_valid_rtc_data_addr(base)) { |
| 775 | spin_lock_irqsave(&bus(priv)->reg_lock, flags); |
| 776 | ret = iwl_grab_nic_access_silent(bus(priv)); |
| 777 | if (ret == 0) { |
| 778 | iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, base); |
| 779 | status = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT); |
| 780 | iwl_release_nic_access(bus(priv)); |
| 781 | } |
| 782 | spin_unlock_irqrestore(&bus(priv)->reg_lock, flags); |
| 783 | |
| 784 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
| 785 | if (ret == 0) { |
| 786 | struct iwl_trans *trans = trans(priv); |
| 787 | if (!priv->wowlan_sram) |
| 788 | priv->wowlan_sram = |
| 789 | kzalloc(trans->ucode_wowlan.data.len, |
| 790 | GFP_KERNEL); |
| 791 | |
| 792 | if (priv->wowlan_sram) |
| 793 | _iwl_read_targ_mem_words( |
| 794 | bus(priv), 0x800000, priv->wowlan_sram, |
| 795 | trans->ucode_wowlan.data.len / 4); |
| 796 | } |
| 797 | #endif |
| 798 | } |
| 799 | |
| 800 | /* we'll clear ctx->vif during iwlagn_prepare_restart() */ |
| 801 | vif = ctx->vif; |
| 802 | |
| 803 | priv->shrd->wowlan = false; |
| 804 | |
| 805 | device_set_wakeup_enable(bus(priv)->dev, false); |
| 806 | |
| 807 | iwlagn_prepare_restart(priv); |
| 808 | |
| 809 | memset((void *)&ctx->active, 0, sizeof(ctx->active)); |
| 810 | iwl_connection_init_rx_config(priv, ctx); |
| 811 | iwlagn_set_rxon_chain(priv, ctx); |
| 812 | |
| 813 | mutex_unlock(&priv->shrd->mutex); |
| 814 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 815 | |
| 816 | ieee80211_resume_disconnect(vif); |
| 817 | |
| 818 | return 1; |
| 819 | } |
| 820 | |
| 821 | #endif |
| 822 | |
| 823 | static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
| 824 | { |
| 825 | struct iwl_priv *priv = hw->priv; |
| 826 | |
| 827 | IWL_DEBUG_MACDUMP(priv, "enter\n"); |
| 828 | |
| 829 | IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, |
| 830 | ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate); |
| 831 | |
| 832 | if (iwlagn_tx_skb(priv, skb)) |
| 833 | dev_kfree_skb_any(skb); |
| 834 | |
| 835 | IWL_DEBUG_MACDUMP(priv, "leave\n"); |
| 836 | } |
| 837 | |
| 838 | static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw, |
| 839 | struct ieee80211_vif *vif, |
| 840 | struct ieee80211_key_conf *keyconf, |
| 841 | struct ieee80211_sta *sta, |
| 842 | u32 iv32, u16 *phase1key) |
| 843 | { |
| 844 | struct iwl_priv *priv = hw->priv; |
| 845 | |
| 846 | iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key); |
| 847 | } |
| 848 | |
| 849 | static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
| 850 | struct ieee80211_vif *vif, |
| 851 | struct ieee80211_sta *sta, |
| 852 | struct ieee80211_key_conf *key) |
| 853 | { |
| 854 | struct iwl_priv *priv = hw->priv; |
| 855 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| 856 | struct iwl_rxon_context *ctx = vif_priv->ctx; |
| 857 | int ret; |
| 858 | bool is_default_wep_key = false; |
| 859 | |
| 860 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 861 | |
| 862 | if (iwlagn_mod_params.sw_crypto) { |
| 863 | IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n"); |
| 864 | return -EOPNOTSUPP; |
| 865 | } |
| 866 | |
| 867 | /* |
| 868 | * We could program these keys into the hardware as well, but we |
| 869 | * don't expect much multicast traffic in IBSS and having keys |
| 870 | * for more stations is probably more useful. |
| 871 | * |
| 872 | * Mark key TX-only and return 0. |
| 873 | */ |
| 874 | if (vif->type == NL80211_IFTYPE_ADHOC && |
| 875 | !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
| 876 | key->hw_key_idx = WEP_INVALID_OFFSET; |
| 877 | return 0; |
| 878 | } |
| 879 | |
| 880 | /* If they key was TX-only, accept deletion */ |
| 881 | if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET) |
| 882 | return 0; |
| 883 | |
| 884 | mutex_lock(&priv->shrd->mutex); |
| 885 | iwl_scan_cancel_timeout(priv, 100); |
| 886 | |
| 887 | BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT); |
| 888 | |
| 889 | /* |
| 890 | * If we are getting WEP group key and we didn't receive any key mapping |
| 891 | * so far, we are in legacy wep mode (group key only), otherwise we are |
| 892 | * in 1X mode. |
| 893 | * In legacy wep mode, we use another host command to the uCode. |
| 894 | */ |
| 895 | if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 || |
| 896 | key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) { |
| 897 | if (cmd == SET_KEY) |
| 898 | is_default_wep_key = !ctx->key_mapping_keys; |
| 899 | else |
| 900 | is_default_wep_key = |
| 901 | key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT; |
| 902 | } |
| 903 | |
| 904 | |
| 905 | switch (cmd) { |
| 906 | case SET_KEY: |
| 907 | if (is_default_wep_key) { |
| 908 | ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key); |
| 909 | break; |
| 910 | } |
| 911 | ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta); |
| 912 | if (ret) { |
| 913 | /* |
| 914 | * can't add key for RX, but we don't need it |
| 915 | * in the device for TX so still return 0 |
| 916 | */ |
| 917 | ret = 0; |
| 918 | key->hw_key_idx = WEP_INVALID_OFFSET; |
| 919 | } |
| 920 | |
| 921 | IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n"); |
| 922 | break; |
| 923 | case DISABLE_KEY: |
| 924 | if (is_default_wep_key) |
| 925 | ret = iwl_remove_default_wep_key(priv, ctx, key); |
| 926 | else |
| 927 | ret = iwl_remove_dynamic_key(priv, ctx, key, sta); |
| 928 | |
| 929 | IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n"); |
| 930 | break; |
| 931 | default: |
| 932 | ret = -EINVAL; |
| 933 | } |
| 934 | |
| 935 | mutex_unlock(&priv->shrd->mutex); |
| 936 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 937 | |
| 938 | return ret; |
| 939 | } |
| 940 | |
| 941 | static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw, |
| 942 | struct ieee80211_vif *vif, |
| 943 | enum ieee80211_ampdu_mlme_action action, |
| 944 | struct ieee80211_sta *sta, u16 tid, u16 *ssn, |
| 945 | u8 buf_size) |
| 946 | { |
| 947 | struct iwl_priv *priv = hw->priv; |
| 948 | int ret = -EINVAL; |
| 949 | struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; |
| 950 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
| 951 | |
| 952 | IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n", |
| 953 | sta->addr, tid); |
| 954 | |
| 955 | if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)) |
| 956 | return -EACCES; |
| 957 | |
| 958 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 959 | mutex_lock(&priv->shrd->mutex); |
| 960 | |
| 961 | switch (action) { |
| 962 | case IEEE80211_AMPDU_RX_START: |
| 963 | IWL_DEBUG_HT(priv, "start Rx\n"); |
| 964 | ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn); |
| 965 | break; |
| 966 | case IEEE80211_AMPDU_RX_STOP: |
| 967 | IWL_DEBUG_HT(priv, "stop Rx\n"); |
| 968 | ret = iwl_sta_rx_agg_stop(priv, sta, tid); |
| 969 | if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) |
| 970 | ret = 0; |
| 971 | break; |
| 972 | case IEEE80211_AMPDU_TX_START: |
| 973 | IWL_DEBUG_HT(priv, "start Tx\n"); |
| 974 | ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn); |
| 975 | break; |
| 976 | case IEEE80211_AMPDU_TX_STOP: |
| 977 | IWL_DEBUG_HT(priv, "stop Tx\n"); |
| 978 | ret = iwlagn_tx_agg_stop(priv, vif, sta, tid); |
| 979 | if ((ret == 0) && (priv->agg_tids_count > 0)) { |
| 980 | priv->agg_tids_count--; |
| 981 | IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", |
| 982 | priv->agg_tids_count); |
| 983 | } |
| 984 | if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) |
| 985 | ret = 0; |
| 986 | if (!priv->agg_tids_count && priv->cfg->ht_params && |
| 987 | priv->cfg->ht_params->use_rts_for_aggregation) { |
| 988 | /* |
| 989 | * switch off RTS/CTS if it was previously enabled |
| 990 | */ |
| 991 | sta_priv->lq_sta.lq.general_params.flags &= |
| 992 | ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; |
| 993 | iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif), |
| 994 | &sta_priv->lq_sta.lq, CMD_ASYNC, false); |
| 995 | } |
| 996 | break; |
| 997 | case IEEE80211_AMPDU_TX_OPERATIONAL: |
| 998 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
| 999 | |
| 1000 | iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, iwl_sta_id(sta), |
| 1001 | tid, buf_size); |
| 1002 | |
| 1003 | /* |
| 1004 | * If the limit is 0, then it wasn't initialised yet, |
| 1005 | * use the default. We can do that since we take the |
| 1006 | * minimum below, and we don't want to go above our |
| 1007 | * default due to hardware restrictions. |
| 1008 | */ |
| 1009 | if (sta_priv->max_agg_bufsize == 0) |
| 1010 | sta_priv->max_agg_bufsize = |
| 1011 | LINK_QUAL_AGG_FRAME_LIMIT_DEF; |
| 1012 | |
| 1013 | /* |
| 1014 | * Even though in theory the peer could have different |
| 1015 | * aggregation reorder buffer sizes for different sessions, |
| 1016 | * our ucode doesn't allow for that and has a global limit |
| 1017 | * for each station. Therefore, use the minimum of all the |
| 1018 | * aggregation sessions and our default value. |
| 1019 | */ |
| 1020 | sta_priv->max_agg_bufsize = |
| 1021 | min(sta_priv->max_agg_bufsize, buf_size); |
| 1022 | |
| 1023 | if (priv->cfg->ht_params && |
| 1024 | priv->cfg->ht_params->use_rts_for_aggregation) { |
| 1025 | /* |
| 1026 | * switch to RTS/CTS if it is the prefer protection |
| 1027 | * method for HT traffic |
| 1028 | */ |
| 1029 | |
| 1030 | sta_priv->lq_sta.lq.general_params.flags |= |
| 1031 | LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; |
| 1032 | } |
| 1033 | priv->agg_tids_count++; |
| 1034 | IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", |
| 1035 | priv->agg_tids_count); |
| 1036 | |
| 1037 | sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = |
| 1038 | sta_priv->max_agg_bufsize; |
| 1039 | |
| 1040 | iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif), |
| 1041 | &sta_priv->lq_sta.lq, CMD_ASYNC, false); |
| 1042 | |
| 1043 | IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n", |
| 1044 | sta->addr, tid); |
| 1045 | ret = 0; |
| 1046 | break; |
| 1047 | } |
| 1048 | mutex_unlock(&priv->shrd->mutex); |
| 1049 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1050 | return ret; |
| 1051 | } |
| 1052 | |
| 1053 | static int iwlagn_mac_sta_add(struct ieee80211_hw *hw, |
| 1054 | struct ieee80211_vif *vif, |
| 1055 | struct ieee80211_sta *sta) |
| 1056 | { |
| 1057 | struct iwl_priv *priv = hw->priv; |
| 1058 | struct iwl_station_priv *sta_priv = (void *)sta->drv_priv; |
| 1059 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| 1060 | bool is_ap = vif->type == NL80211_IFTYPE_STATION; |
| 1061 | int ret = 0; |
| 1062 | u8 sta_id; |
| 1063 | |
| 1064 | IWL_DEBUG_MAC80211(priv, "received request to add station %pM\n", |
| 1065 | sta->addr); |
| 1066 | mutex_lock(&priv->shrd->mutex); |
| 1067 | IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n", |
| 1068 | sta->addr); |
| 1069 | sta_priv->sta_id = IWL_INVALID_STATION; |
| 1070 | |
| 1071 | atomic_set(&sta_priv->pending_frames, 0); |
| 1072 | if (vif->type == NL80211_IFTYPE_AP) |
| 1073 | sta_priv->client = true; |
| 1074 | |
| 1075 | ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr, |
| 1076 | is_ap, sta, &sta_id); |
| 1077 | if (ret) { |
| 1078 | IWL_ERR(priv, "Unable to add station %pM (%d)\n", |
| 1079 | sta->addr, ret); |
| 1080 | /* Should we return success if return code is EEXIST ? */ |
| 1081 | goto out; |
| 1082 | } |
| 1083 | |
| 1084 | sta_priv->sta_id = sta_id; |
| 1085 | |
| 1086 | /* Initialize rate scaling */ |
| 1087 | IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n", |
| 1088 | sta->addr); |
| 1089 | iwl_rs_rate_init(priv, sta, sta_id); |
| 1090 | out: |
| 1091 | mutex_unlock(&priv->shrd->mutex); |
| 1092 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1093 | |
| 1094 | return ret; |
| 1095 | } |
| 1096 | |
| 1097 | static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw, |
| 1098 | struct ieee80211_channel_switch *ch_switch) |
| 1099 | { |
| 1100 | struct iwl_priv *priv = hw->priv; |
| 1101 | const struct iwl_channel_info *ch_info; |
| 1102 | struct ieee80211_conf *conf = &hw->conf; |
| 1103 | struct ieee80211_channel *channel = ch_switch->channel; |
| 1104 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; |
| 1105 | /* |
| 1106 | * MULTI-FIXME |
| 1107 | * When we add support for multiple interfaces, we need to |
| 1108 | * revisit this. The channel switch command in the device |
| 1109 | * only affects the BSS context, but what does that really |
| 1110 | * mean? And what if we get a CSA on the second interface? |
| 1111 | * This needs a lot of work. |
| 1112 | */ |
| 1113 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| 1114 | u16 ch; |
| 1115 | |
| 1116 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1117 | |
| 1118 | mutex_lock(&priv->shrd->mutex); |
| 1119 | |
| 1120 | if (iwl_is_rfkill(priv->shrd)) |
| 1121 | goto out; |
| 1122 | |
| 1123 | if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) || |
| 1124 | test_bit(STATUS_SCANNING, &priv->shrd->status) || |
| 1125 | test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status)) |
| 1126 | goto out; |
| 1127 | |
| 1128 | if (!iwl_is_associated_ctx(ctx)) |
| 1129 | goto out; |
| 1130 | |
| 1131 | if (!priv->cfg->lib->set_channel_switch) |
| 1132 | goto out; |
| 1133 | |
| 1134 | ch = channel->hw_value; |
| 1135 | if (le16_to_cpu(ctx->active.channel) == ch) |
| 1136 | goto out; |
| 1137 | |
| 1138 | ch_info = iwl_get_channel_info(priv, channel->band, ch); |
| 1139 | if (!is_channel_valid(ch_info)) { |
| 1140 | IWL_DEBUG_MAC80211(priv, "invalid channel\n"); |
| 1141 | goto out; |
| 1142 | } |
| 1143 | |
| 1144 | spin_lock_irq(&priv->shrd->lock); |
| 1145 | |
| 1146 | priv->current_ht_config.smps = conf->smps_mode; |
| 1147 | |
| 1148 | /* Configure HT40 channels */ |
| 1149 | ctx->ht.enabled = conf_is_ht(conf); |
| 1150 | if (ctx->ht.enabled) { |
| 1151 | if (conf_is_ht40_minus(conf)) { |
| 1152 | ctx->ht.extension_chan_offset = |
| 1153 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
| 1154 | ctx->ht.is_40mhz = true; |
| 1155 | } else if (conf_is_ht40_plus(conf)) { |
| 1156 | ctx->ht.extension_chan_offset = |
| 1157 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
| 1158 | ctx->ht.is_40mhz = true; |
| 1159 | } else { |
| 1160 | ctx->ht.extension_chan_offset = |
| 1161 | IEEE80211_HT_PARAM_CHA_SEC_NONE; |
| 1162 | ctx->ht.is_40mhz = false; |
| 1163 | } |
| 1164 | } else |
| 1165 | ctx->ht.is_40mhz = false; |
| 1166 | |
| 1167 | if ((le16_to_cpu(ctx->staging.channel) != ch)) |
| 1168 | ctx->staging.flags = 0; |
| 1169 | |
| 1170 | iwl_set_rxon_channel(priv, channel, ctx); |
| 1171 | iwl_set_rxon_ht(priv, ht_conf); |
| 1172 | iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif); |
| 1173 | |
| 1174 | spin_unlock_irq(&priv->shrd->lock); |
| 1175 | |
| 1176 | iwl_set_rate(priv); |
| 1177 | /* |
| 1178 | * at this point, staging_rxon has the |
| 1179 | * configuration for channel switch |
| 1180 | */ |
| 1181 | set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status); |
| 1182 | priv->switch_channel = cpu_to_le16(ch); |
| 1183 | if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) { |
| 1184 | clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status); |
| 1185 | priv->switch_channel = 0; |
| 1186 | ieee80211_chswitch_done(ctx->vif, false); |
| 1187 | } |
| 1188 | |
| 1189 | out: |
| 1190 | mutex_unlock(&priv->shrd->mutex); |
| 1191 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1192 | } |
| 1193 | |
| 1194 | static void iwlagn_configure_filter(struct ieee80211_hw *hw, |
| 1195 | unsigned int changed_flags, |
| 1196 | unsigned int *total_flags, |
| 1197 | u64 multicast) |
| 1198 | { |
| 1199 | struct iwl_priv *priv = hw->priv; |
| 1200 | __le32 filter_or = 0, filter_nand = 0; |
| 1201 | struct iwl_rxon_context *ctx; |
| 1202 | |
| 1203 | #define CHK(test, flag) do { \ |
| 1204 | if (*total_flags & (test)) \ |
| 1205 | filter_or |= (flag); \ |
| 1206 | else \ |
| 1207 | filter_nand |= (flag); \ |
| 1208 | } while (0) |
| 1209 | |
| 1210 | IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n", |
| 1211 | changed_flags, *total_flags); |
| 1212 | |
| 1213 | CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK); |
| 1214 | /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */ |
| 1215 | CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK); |
| 1216 | CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK); |
| 1217 | |
| 1218 | #undef CHK |
| 1219 | |
| 1220 | mutex_lock(&priv->shrd->mutex); |
| 1221 | |
| 1222 | for_each_context(priv, ctx) { |
| 1223 | ctx->staging.filter_flags &= ~filter_nand; |
| 1224 | ctx->staging.filter_flags |= filter_or; |
| 1225 | |
| 1226 | /* |
| 1227 | * Not committing directly because hardware can perform a scan, |
| 1228 | * but we'll eventually commit the filter flags change anyway. |
| 1229 | */ |
| 1230 | } |
| 1231 | |
| 1232 | mutex_unlock(&priv->shrd->mutex); |
| 1233 | |
| 1234 | /* |
| 1235 | * Receiving all multicast frames is always enabled by the |
| 1236 | * default flags setup in iwl_connection_init_rx_config() |
| 1237 | * since we currently do not support programming multicast |
| 1238 | * filters into the device. |
| 1239 | */ |
| 1240 | *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS | |
| 1241 | FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; |
| 1242 | } |
| 1243 | |
| 1244 | static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop) |
| 1245 | { |
| 1246 | struct iwl_priv *priv = hw->priv; |
| 1247 | |
| 1248 | mutex_lock(&priv->shrd->mutex); |
| 1249 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1250 | |
| 1251 | if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) { |
| 1252 | IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n"); |
| 1253 | goto done; |
| 1254 | } |
| 1255 | if (iwl_is_rfkill(priv->shrd)) { |
| 1256 | IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n"); |
| 1257 | goto done; |
| 1258 | } |
| 1259 | |
| 1260 | /* |
| 1261 | * mac80211 will not push any more frames for transmit |
| 1262 | * until the flush is completed |
| 1263 | */ |
| 1264 | if (drop) { |
| 1265 | IWL_DEBUG_MAC80211(priv, "send flush command\n"); |
| 1266 | if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) { |
| 1267 | IWL_ERR(priv, "flush request fail\n"); |
| 1268 | goto done; |
| 1269 | } |
| 1270 | } |
| 1271 | IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n"); |
| 1272 | iwl_trans_wait_tx_queue_empty(trans(priv)); |
| 1273 | done: |
| 1274 | mutex_unlock(&priv->shrd->mutex); |
| 1275 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1276 | } |
| 1277 | |
| 1278 | static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw, |
| 1279 | struct ieee80211_channel *channel, |
| 1280 | enum nl80211_channel_type channel_type, |
| 1281 | int duration) |
| 1282 | { |
| 1283 | struct iwl_priv *priv = hw->priv; |
| 1284 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN]; |
| 1285 | int err = 0; |
| 1286 | |
| 1287 | if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN))) |
| 1288 | return -EOPNOTSUPP; |
| 1289 | |
| 1290 | if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT))) |
| 1291 | return -EOPNOTSUPP; |
| 1292 | |
| 1293 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1294 | mutex_lock(&priv->shrd->mutex); |
| 1295 | |
| 1296 | if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) { |
| 1297 | err = -EBUSY; |
| 1298 | goto out; |
| 1299 | } |
| 1300 | |
| 1301 | priv->hw_roc_channel = channel; |
| 1302 | priv->hw_roc_chantype = channel_type; |
| 1303 | priv->hw_roc_duration = duration; |
| 1304 | priv->hw_roc_start_notified = false; |
| 1305 | cancel_delayed_work(&priv->hw_roc_disable_work); |
| 1306 | |
| 1307 | if (!ctx->is_active) { |
Johannes Berg | a69cd04 | 2011-11-10 06:55:13 -0800 | [diff] [blame] | 1308 | static const struct iwl_qos_info default_qos_data = { |
| 1309 | .def_qos_parm = { |
| 1310 | .ac[0] = { |
| 1311 | .cw_min = cpu_to_le16(3), |
| 1312 | .cw_max = cpu_to_le16(7), |
| 1313 | .aifsn = 2, |
| 1314 | .edca_txop = cpu_to_le16(1504), |
| 1315 | }, |
| 1316 | .ac[1] = { |
| 1317 | .cw_min = cpu_to_le16(7), |
| 1318 | .cw_max = cpu_to_le16(15), |
| 1319 | .aifsn = 2, |
| 1320 | .edca_txop = cpu_to_le16(3008), |
| 1321 | }, |
| 1322 | .ac[2] = { |
| 1323 | .cw_min = cpu_to_le16(15), |
| 1324 | .cw_max = cpu_to_le16(1023), |
| 1325 | .aifsn = 3, |
| 1326 | }, |
| 1327 | .ac[3] = { |
| 1328 | .cw_min = cpu_to_le16(15), |
| 1329 | .cw_max = cpu_to_le16(1023), |
| 1330 | .aifsn = 7, |
| 1331 | }, |
| 1332 | }, |
| 1333 | }; |
| 1334 | |
Wey-Yi Guy | 7335613 | 2011-11-10 06:55:11 -0800 | [diff] [blame] | 1335 | ctx->is_active = true; |
Johannes Berg | a69cd04 | 2011-11-10 06:55:13 -0800 | [diff] [blame] | 1336 | ctx->qos_data = default_qos_data; |
Wey-Yi Guy | 7335613 | 2011-11-10 06:55:11 -0800 | [diff] [blame] | 1337 | ctx->staging.dev_type = RXON_DEV_TYPE_P2P; |
| 1338 | memcpy(ctx->staging.node_addr, |
| 1339 | priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr, |
| 1340 | ETH_ALEN); |
| 1341 | memcpy(ctx->staging.bssid_addr, |
| 1342 | priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr, |
| 1343 | ETH_ALEN); |
| 1344 | err = iwlagn_commit_rxon(priv, ctx); |
| 1345 | if (err) |
| 1346 | goto out; |
| 1347 | ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK | |
| 1348 | RXON_FILTER_PROMISC_MSK | |
| 1349 | RXON_FILTER_CTL2HOST_MSK; |
| 1350 | |
| 1351 | err = iwlagn_commit_rxon(priv, ctx); |
| 1352 | if (err) { |
| 1353 | iwlagn_disable_roc(priv); |
| 1354 | goto out; |
| 1355 | } |
| 1356 | priv->hw_roc_setup = true; |
| 1357 | } |
| 1358 | |
| 1359 | err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band); |
| 1360 | if (err) |
| 1361 | iwlagn_disable_roc(priv); |
| 1362 | |
| 1363 | out: |
| 1364 | mutex_unlock(&priv->shrd->mutex); |
| 1365 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1366 | |
| 1367 | return err; |
| 1368 | } |
| 1369 | |
| 1370 | static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw) |
| 1371 | { |
| 1372 | struct iwl_priv *priv = hw->priv; |
| 1373 | |
| 1374 | if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN))) |
| 1375 | return -EOPNOTSUPP; |
| 1376 | |
| 1377 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1378 | mutex_lock(&priv->shrd->mutex); |
| 1379 | iwl_scan_cancel_timeout(priv, priv->hw_roc_duration); |
| 1380 | iwlagn_disable_roc(priv); |
| 1381 | mutex_unlock(&priv->shrd->mutex); |
| 1382 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1383 | |
| 1384 | return 0; |
| 1385 | } |
| 1386 | |
| 1387 | static int iwlagn_mac_tx_sync(struct ieee80211_hw *hw, |
| 1388 | struct ieee80211_vif *vif, |
| 1389 | const u8 *bssid, |
| 1390 | enum ieee80211_tx_sync_type type) |
| 1391 | { |
| 1392 | struct iwl_priv *priv = hw->priv; |
| 1393 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| 1394 | struct iwl_rxon_context *ctx = vif_priv->ctx; |
| 1395 | int ret; |
| 1396 | u8 sta_id; |
| 1397 | |
| 1398 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1399 | mutex_lock(&priv->shrd->mutex); |
| 1400 | |
| 1401 | if (iwl_is_associated_ctx(ctx)) { |
| 1402 | ret = 0; |
| 1403 | goto out; |
| 1404 | } |
| 1405 | |
| 1406 | if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW, |
| 1407 | &priv->shrd->status)) { |
| 1408 | ret = -EBUSY; |
| 1409 | goto out; |
| 1410 | } |
| 1411 | |
| 1412 | ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id); |
| 1413 | if (ret) |
| 1414 | goto out; |
| 1415 | |
| 1416 | if (WARN_ON(sta_id != ctx->ap_sta_id)) { |
| 1417 | ret = -EIO; |
| 1418 | goto out_remove_sta; |
| 1419 | } |
| 1420 | |
| 1421 | memcpy(ctx->bssid, bssid, ETH_ALEN); |
| 1422 | ctx->preauth_bssid = true; |
| 1423 | |
| 1424 | ret = iwlagn_commit_rxon(priv, ctx); |
| 1425 | |
| 1426 | if (ret == 0) |
| 1427 | goto out; |
| 1428 | |
| 1429 | out_remove_sta: |
| 1430 | iwl_remove_station(priv, sta_id, bssid); |
| 1431 | out: |
| 1432 | mutex_unlock(&priv->shrd->mutex); |
| 1433 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1434 | |
| 1435 | return ret; |
| 1436 | } |
| 1437 | |
| 1438 | static void iwlagn_mac_finish_tx_sync(struct ieee80211_hw *hw, |
| 1439 | struct ieee80211_vif *vif, |
| 1440 | const u8 *bssid, |
| 1441 | enum ieee80211_tx_sync_type type) |
| 1442 | { |
| 1443 | struct iwl_priv *priv = hw->priv; |
| 1444 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| 1445 | struct iwl_rxon_context *ctx = vif_priv->ctx; |
| 1446 | |
| 1447 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1448 | mutex_lock(&priv->shrd->mutex); |
| 1449 | |
| 1450 | if (iwl_is_associated_ctx(ctx)) |
| 1451 | goto out; |
| 1452 | |
| 1453 | iwl_remove_station(priv, ctx->ap_sta_id, bssid); |
| 1454 | ctx->preauth_bssid = false; |
| 1455 | /* no need to commit */ |
| 1456 | out: |
| 1457 | mutex_unlock(&priv->shrd->mutex); |
| 1458 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1459 | } |
| 1460 | |
| 1461 | static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw, |
| 1462 | enum ieee80211_rssi_event rssi_event) |
| 1463 | { |
| 1464 | struct iwl_priv *priv = hw->priv; |
| 1465 | |
| 1466 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1467 | mutex_lock(&priv->shrd->mutex); |
| 1468 | |
| 1469 | if (priv->cfg->bt_params && |
| 1470 | priv->cfg->bt_params->advanced_bt_coexist) { |
| 1471 | if (rssi_event == RSSI_EVENT_LOW) |
| 1472 | priv->bt_enable_pspoll = true; |
| 1473 | else if (rssi_event == RSSI_EVENT_HIGH) |
| 1474 | priv->bt_enable_pspoll = false; |
| 1475 | |
| 1476 | iwlagn_send_advance_bt_config(priv); |
| 1477 | } else { |
| 1478 | IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled," |
| 1479 | "ignoring RSSI callback\n"); |
| 1480 | } |
| 1481 | |
| 1482 | mutex_unlock(&priv->shrd->mutex); |
| 1483 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1484 | } |
| 1485 | |
| 1486 | static int iwlagn_mac_set_tim(struct ieee80211_hw *hw, |
| 1487 | struct ieee80211_sta *sta, bool set) |
| 1488 | { |
| 1489 | struct iwl_priv *priv = hw->priv; |
| 1490 | |
| 1491 | queue_work(priv->shrd->workqueue, &priv->beacon_update); |
| 1492 | |
| 1493 | return 0; |
| 1494 | } |
| 1495 | |
Wey-Yi Guy | 0b7a4c7 | 2011-11-10 06:55:14 -0800 | [diff] [blame^] | 1496 | static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw, |
| 1497 | struct ieee80211_vif *vif, u16 queue, |
| 1498 | const struct ieee80211_tx_queue_params *params) |
| 1499 | { |
| 1500 | struct iwl_priv *priv = hw->priv; |
| 1501 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| 1502 | struct iwl_rxon_context *ctx = vif_priv->ctx; |
| 1503 | unsigned long flags; |
| 1504 | int q; |
| 1505 | |
| 1506 | if (WARN_ON(!ctx)) |
| 1507 | return -EINVAL; |
| 1508 | |
| 1509 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1510 | |
| 1511 | if (!iwl_is_ready_rf(priv->shrd)) { |
| 1512 | IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); |
| 1513 | return -EIO; |
| 1514 | } |
| 1515 | |
| 1516 | if (queue >= AC_NUM) { |
| 1517 | IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue); |
| 1518 | return 0; |
| 1519 | } |
| 1520 | |
| 1521 | q = AC_NUM - 1 - queue; |
| 1522 | |
| 1523 | spin_lock_irqsave(&priv->shrd->lock, flags); |
| 1524 | |
| 1525 | ctx->qos_data.def_qos_parm.ac[q].cw_min = |
| 1526 | cpu_to_le16(params->cw_min); |
| 1527 | ctx->qos_data.def_qos_parm.ac[q].cw_max = |
| 1528 | cpu_to_le16(params->cw_max); |
| 1529 | ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; |
| 1530 | ctx->qos_data.def_qos_parm.ac[q].edca_txop = |
| 1531 | cpu_to_le16((params->txop * 32)); |
| 1532 | |
| 1533 | ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0; |
| 1534 | |
| 1535 | spin_unlock_irqrestore(&priv->shrd->lock, flags); |
| 1536 | |
| 1537 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1538 | return 0; |
| 1539 | } |
| 1540 | |
| 1541 | static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw) |
| 1542 | { |
| 1543 | struct iwl_priv *priv = hw->priv; |
| 1544 | |
| 1545 | return priv->ibss_manager == IWL_IBSS_MANAGER; |
| 1546 | } |
| 1547 | |
| 1548 | static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
| 1549 | { |
| 1550 | iwl_connection_init_rx_config(priv, ctx); |
| 1551 | |
| 1552 | iwlagn_set_rxon_chain(priv, ctx); |
| 1553 | |
| 1554 | return iwlagn_commit_rxon(priv, ctx); |
| 1555 | } |
| 1556 | |
| 1557 | static int iwl_setup_interface(struct iwl_priv *priv, |
| 1558 | struct iwl_rxon_context *ctx) |
| 1559 | { |
| 1560 | struct ieee80211_vif *vif = ctx->vif; |
| 1561 | int err; |
| 1562 | |
| 1563 | lockdep_assert_held(&priv->shrd->mutex); |
| 1564 | |
| 1565 | /* |
| 1566 | * This variable will be correct only when there's just |
| 1567 | * a single context, but all code using it is for hardware |
| 1568 | * that supports only one context. |
| 1569 | */ |
| 1570 | priv->iw_mode = vif->type; |
| 1571 | |
| 1572 | ctx->is_active = true; |
| 1573 | |
| 1574 | err = iwl_set_mode(priv, ctx); |
| 1575 | if (err) { |
| 1576 | if (!ctx->always_active) |
| 1577 | ctx->is_active = false; |
| 1578 | return err; |
| 1579 | } |
| 1580 | |
| 1581 | if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist && |
| 1582 | vif->type == NL80211_IFTYPE_ADHOC) { |
| 1583 | /* |
| 1584 | * pretend to have high BT traffic as long as we |
| 1585 | * are operating in IBSS mode, as this will cause |
| 1586 | * the rate scaling etc. to behave as intended. |
| 1587 | */ |
| 1588 | priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH; |
| 1589 | } |
| 1590 | |
| 1591 | return 0; |
| 1592 | } |
| 1593 | |
| 1594 | static int iwlagn_mac_add_interface(struct ieee80211_hw *hw, |
| 1595 | struct ieee80211_vif *vif) |
| 1596 | { |
| 1597 | struct iwl_priv *priv = hw->priv; |
| 1598 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
| 1599 | struct iwl_rxon_context *tmp, *ctx = NULL; |
| 1600 | int err; |
| 1601 | enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif); |
| 1602 | |
| 1603 | IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", |
| 1604 | viftype, vif->addr); |
| 1605 | |
| 1606 | cancel_delayed_work_sync(&priv->hw_roc_disable_work); |
| 1607 | |
| 1608 | mutex_lock(&priv->shrd->mutex); |
| 1609 | |
| 1610 | iwlagn_disable_roc(priv); |
| 1611 | |
| 1612 | if (!iwl_is_ready_rf(priv->shrd)) { |
| 1613 | IWL_WARN(priv, "Try to add interface when device not ready\n"); |
| 1614 | err = -EINVAL; |
| 1615 | goto out; |
| 1616 | } |
| 1617 | |
| 1618 | for_each_context(priv, tmp) { |
| 1619 | u32 possible_modes = |
| 1620 | tmp->interface_modes | tmp->exclusive_interface_modes; |
| 1621 | |
| 1622 | if (tmp->vif) { |
| 1623 | /* check if this busy context is exclusive */ |
| 1624 | if (tmp->exclusive_interface_modes & |
| 1625 | BIT(tmp->vif->type)) { |
| 1626 | err = -EINVAL; |
| 1627 | goto out; |
| 1628 | } |
| 1629 | continue; |
| 1630 | } |
| 1631 | |
| 1632 | if (!(possible_modes & BIT(viftype))) |
| 1633 | continue; |
| 1634 | |
| 1635 | /* have maybe usable context w/o interface */ |
| 1636 | ctx = tmp; |
| 1637 | break; |
| 1638 | } |
| 1639 | |
| 1640 | if (!ctx) { |
| 1641 | err = -EOPNOTSUPP; |
| 1642 | goto out; |
| 1643 | } |
| 1644 | |
| 1645 | vif_priv->ctx = ctx; |
| 1646 | ctx->vif = vif; |
| 1647 | |
| 1648 | err = iwl_setup_interface(priv, ctx); |
| 1649 | if (!err) |
| 1650 | goto out; |
| 1651 | |
| 1652 | ctx->vif = NULL; |
| 1653 | priv->iw_mode = NL80211_IFTYPE_STATION; |
| 1654 | out: |
| 1655 | mutex_unlock(&priv->shrd->mutex); |
| 1656 | |
| 1657 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1658 | return err; |
| 1659 | } |
| 1660 | |
| 1661 | static void iwl_teardown_interface(struct iwl_priv *priv, |
| 1662 | struct ieee80211_vif *vif, |
| 1663 | bool mode_change) |
| 1664 | { |
| 1665 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
| 1666 | |
| 1667 | lockdep_assert_held(&priv->shrd->mutex); |
| 1668 | |
| 1669 | if (priv->scan_vif == vif) { |
| 1670 | iwl_scan_cancel_timeout(priv, 200); |
| 1671 | iwl_force_scan_end(priv); |
| 1672 | } |
| 1673 | |
| 1674 | if (!mode_change) { |
| 1675 | iwl_set_mode(priv, ctx); |
| 1676 | if (!ctx->always_active) |
| 1677 | ctx->is_active = false; |
| 1678 | } |
| 1679 | |
| 1680 | /* |
| 1681 | * When removing the IBSS interface, overwrite the |
| 1682 | * BT traffic load with the stored one from the last |
| 1683 | * notification, if any. If this is a device that |
| 1684 | * doesn't implement this, this has no effect since |
| 1685 | * both values are the same and zero. |
| 1686 | */ |
| 1687 | if (vif->type == NL80211_IFTYPE_ADHOC) |
| 1688 | priv->bt_traffic_load = priv->last_bt_traffic_load; |
| 1689 | } |
| 1690 | |
| 1691 | static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw, |
| 1692 | struct ieee80211_vif *vif) |
| 1693 | { |
| 1694 | struct iwl_priv *priv = hw->priv; |
| 1695 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
| 1696 | |
| 1697 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1698 | |
| 1699 | mutex_lock(&priv->shrd->mutex); |
| 1700 | |
| 1701 | if (WARN_ON(ctx->vif != vif)) { |
| 1702 | struct iwl_rxon_context *tmp; |
| 1703 | IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif); |
| 1704 | for_each_context(priv, tmp) |
| 1705 | IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n", |
| 1706 | tmp->ctxid, tmp, tmp->vif); |
| 1707 | } |
| 1708 | ctx->vif = NULL; |
| 1709 | |
| 1710 | iwl_teardown_interface(priv, vif, false); |
| 1711 | |
| 1712 | mutex_unlock(&priv->shrd->mutex); |
| 1713 | |
| 1714 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1715 | |
| 1716 | } |
| 1717 | |
| 1718 | static int iwlagn_mac_change_interface(struct ieee80211_hw *hw, |
| 1719 | struct ieee80211_vif *vif, |
| 1720 | enum nl80211_iftype newtype, bool newp2p) |
| 1721 | { |
| 1722 | struct iwl_priv *priv = hw->priv; |
| 1723 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
| 1724 | struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
| 1725 | struct iwl_rxon_context *tmp; |
| 1726 | enum nl80211_iftype newviftype = newtype; |
| 1727 | u32 interface_modes; |
| 1728 | int err; |
| 1729 | |
| 1730 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
| 1731 | |
| 1732 | newtype = ieee80211_iftype_p2p(newtype, newp2p); |
| 1733 | |
| 1734 | mutex_lock(&priv->shrd->mutex); |
| 1735 | |
| 1736 | if (!ctx->vif || !iwl_is_ready_rf(priv->shrd)) { |
| 1737 | /* |
| 1738 | * Huh? But wait ... this can maybe happen when |
| 1739 | * we're in the middle of a firmware restart! |
| 1740 | */ |
| 1741 | err = -EBUSY; |
| 1742 | goto out; |
| 1743 | } |
| 1744 | |
| 1745 | interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes; |
| 1746 | |
| 1747 | if (!(interface_modes & BIT(newtype))) { |
| 1748 | err = -EBUSY; |
| 1749 | goto out; |
| 1750 | } |
| 1751 | |
| 1752 | /* |
| 1753 | * Refuse a change that should be done by moving from the PAN |
| 1754 | * context to the BSS context instead, if the BSS context is |
| 1755 | * available and can support the new interface type. |
| 1756 | */ |
| 1757 | if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif && |
| 1758 | (bss_ctx->interface_modes & BIT(newtype) || |
| 1759 | bss_ctx->exclusive_interface_modes & BIT(newtype))) { |
| 1760 | BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); |
| 1761 | err = -EBUSY; |
| 1762 | goto out; |
| 1763 | } |
| 1764 | |
| 1765 | if (ctx->exclusive_interface_modes & BIT(newtype)) { |
| 1766 | for_each_context(priv, tmp) { |
| 1767 | if (ctx == tmp) |
| 1768 | continue; |
| 1769 | |
| 1770 | if (!tmp->vif) |
| 1771 | continue; |
| 1772 | |
| 1773 | /* |
| 1774 | * The current mode switch would be exclusive, but |
| 1775 | * another context is active ... refuse the switch. |
| 1776 | */ |
| 1777 | err = -EBUSY; |
| 1778 | goto out; |
| 1779 | } |
| 1780 | } |
| 1781 | |
| 1782 | /* success */ |
| 1783 | iwl_teardown_interface(priv, vif, true); |
| 1784 | vif->type = newviftype; |
| 1785 | vif->p2p = newp2p; |
| 1786 | err = iwl_setup_interface(priv, ctx); |
| 1787 | WARN_ON(err); |
| 1788 | /* |
| 1789 | * We've switched internally, but submitting to the |
| 1790 | * device may have failed for some reason. Mask this |
| 1791 | * error, because otherwise mac80211 will not switch |
| 1792 | * (and set the interface type back) and we'll be |
| 1793 | * out of sync with it. |
| 1794 | */ |
| 1795 | err = 0; |
| 1796 | |
| 1797 | out: |
| 1798 | mutex_unlock(&priv->shrd->mutex); |
| 1799 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
| 1800 | |
| 1801 | return err; |
| 1802 | } |
| 1803 | |
Wey-Yi Guy | 7335613 | 2011-11-10 06:55:11 -0800 | [diff] [blame] | 1804 | struct ieee80211_ops iwlagn_hw_ops = { |
| 1805 | .tx = iwlagn_mac_tx, |
| 1806 | .start = iwlagn_mac_start, |
| 1807 | .stop = iwlagn_mac_stop, |
| 1808 | #ifdef CONFIG_PM_SLEEP |
| 1809 | .suspend = iwlagn_mac_suspend, |
| 1810 | .resume = iwlagn_mac_resume, |
| 1811 | #endif |
| 1812 | .add_interface = iwlagn_mac_add_interface, |
| 1813 | .remove_interface = iwlagn_mac_remove_interface, |
| 1814 | .change_interface = iwlagn_mac_change_interface, |
| 1815 | .config = iwlagn_mac_config, |
| 1816 | .configure_filter = iwlagn_configure_filter, |
| 1817 | .set_key = iwlagn_mac_set_key, |
| 1818 | .update_tkip_key = iwlagn_mac_update_tkip_key, |
| 1819 | .set_rekey_data = iwlagn_mac_set_rekey_data, |
| 1820 | .conf_tx = iwlagn_mac_conf_tx, |
| 1821 | .bss_info_changed = iwlagn_bss_info_changed, |
| 1822 | .ampdu_action = iwlagn_mac_ampdu_action, |
| 1823 | .hw_scan = iwlagn_mac_hw_scan, |
| 1824 | .sta_notify = iwlagn_mac_sta_notify, |
| 1825 | .sta_add = iwlagn_mac_sta_add, |
| 1826 | .sta_remove = iwlagn_mac_sta_remove, |
| 1827 | .channel_switch = iwlagn_mac_channel_switch, |
| 1828 | .flush = iwlagn_mac_flush, |
| 1829 | .tx_last_beacon = iwlagn_mac_tx_last_beacon, |
| 1830 | .remain_on_channel = iwlagn_mac_remain_on_channel, |
| 1831 | .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel, |
| 1832 | .rssi_callback = iwlagn_mac_rssi_callback, |
| 1833 | CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd) |
| 1834 | CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump) |
| 1835 | .tx_sync = iwlagn_mac_tx_sync, |
| 1836 | .finish_tx_sync = iwlagn_mac_finish_tx_sync, |
| 1837 | .set_tim = iwlagn_mac_set_tim, |
| 1838 | }; |
| 1839 | |
| 1840 | /* This function both allocates and initializes hw and priv. */ |
| 1841 | struct ieee80211_hw *iwl_alloc_all(void) |
| 1842 | { |
| 1843 | struct iwl_priv *priv; |
| 1844 | /* mac80211 allocates memory for this device instance, including |
| 1845 | * space for this driver's private structure */ |
| 1846 | struct ieee80211_hw *hw; |
| 1847 | |
| 1848 | hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops); |
| 1849 | if (!hw) |
| 1850 | goto out; |
| 1851 | |
| 1852 | priv = hw->priv; |
| 1853 | priv->hw = hw; |
| 1854 | |
| 1855 | out: |
| 1856 | return hw; |
| 1857 | } |