1 /******************************************************************************
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
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.
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
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
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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>
42 #include <net/mac80211.h>
44 #include <asm/div64.h>
46 #include "iwl-eeprom.h"
50 #include "iwl-agn-calib.h"
52 #include "iwl-shared.h"
54 #include "iwl-trans.h"
56 /*****************************************************************************
58 * mac80211 entry point functions
60 *****************************************************************************/
62 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
65 .types = BIT(NL80211_IFTYPE_STATION),
69 .types = BIT(NL80211_IFTYPE_AP),
73 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
76 .types = BIT(NL80211_IFTYPE_STATION),
80 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
83 .types = BIT(NL80211_IFTYPE_STATION),
87 .types = BIT(NL80211_IFTYPE_P2P_GO) |
88 BIT(NL80211_IFTYPE_AP),
92 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
95 .types = BIT(NL80211_IFTYPE_STATION),
99 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
103 static const struct ieee80211_iface_combination
104 iwlagn_iface_combinations_dualmode[] = {
105 { .num_different_channels = 1,
107 .beacon_int_infra_match = true,
108 .limits = iwlagn_sta_ap_limits,
109 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
111 { .num_different_channels = 1,
113 .limits = iwlagn_2sta_limits,
114 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
118 static const struct ieee80211_iface_combination
119 iwlagn_iface_combinations_p2p[] = {
120 { .num_different_channels = 1,
122 .beacon_int_infra_match = true,
123 .limits = iwlagn_p2p_sta_go_limits,
124 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
126 { .num_different_channels = 1,
128 .limits = iwlagn_p2p_2sta_limits,
129 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
134 * Not a mac80211 entry point function, but it fits in with all the
135 * other mac80211 functions grouped here.
137 int iwlagn_mac_setup_register(struct iwl_priv *priv,
138 struct iwlagn_ucode_capabilities *capa)
141 struct ieee80211_hw *hw = priv->hw;
142 struct iwl_rxon_context *ctx;
144 hw->rate_control_algorithm = "iwl-agn-rs";
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;
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;
160 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
161 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
163 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
164 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
165 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
167 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
168 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
170 hw->sta_data_size = sizeof(struct iwl_station_priv);
171 hw->vif_data_size = sizeof(struct iwl_vif_priv);
173 for_each_context(priv, ctx) {
174 hw->wiphy->interface_modes |= ctx->interface_modes;
175 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
178 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
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);
191 hw->wiphy->max_remain_on_channel_duration = 1000;
193 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
194 WIPHY_FLAG_DISABLE_BEACON_HINTS |
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;
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;
215 if (iwlagn_mod_params.power_save)
216 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
218 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
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;
224 /* Default value; 4 EDCA QOS priorities */
227 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
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];
238 ret = ieee80211_register_hw(priv->hw);
240 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
243 priv->mac80211_registered = 1;
248 static int __iwl_up(struct iwl_priv *priv)
250 struct iwl_rxon_context *ctx;
253 lockdep_assert_held(&priv->shrd->mutex);
255 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
256 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
260 for_each_context(priv, ctx) {
261 ret = iwlagn_alloc_bcast_station(priv, ctx);
263 iwl_dealloc_bcast_stations(priv);
268 ret = iwlagn_run_init_ucode(priv);
270 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
274 ret = iwlagn_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
276 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
280 ret = iwl_alive_start(priv);
286 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
288 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
290 IWL_ERR(priv, "Unable to initialize device.\n");
294 static int iwlagn_mac_start(struct ieee80211_hw *hw)
296 struct iwl_priv *priv = hw->priv;
299 IWL_DEBUG_MAC80211(priv, "enter\n");
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);
308 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
310 /* Now we should be done, and the READY bit should be set. */
311 if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
314 iwlagn_led_enable(priv);
317 IWL_DEBUG_MAC80211(priv, "leave\n");
321 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
323 struct iwl_priv *priv = hw->priv;
325 IWL_DEBUG_MAC80211(priv, "enter\n");
334 flush_workqueue(priv->shrd->workqueue);
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);
341 IWL_DEBUG_MAC80211(priv, "leave\n");
344 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
345 struct ieee80211_vif *vif,
346 struct cfg80211_gtk_rekey_data *data)
348 struct iwl_priv *priv = hw->priv;
350 if (iwlagn_mod_params.sw_crypto)
353 IWL_DEBUG_MAC80211(priv, "enter\n");
354 mutex_lock(&priv->shrd->mutex);
356 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
359 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
360 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
362 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
363 priv->have_rekey_data = true;
366 mutex_unlock(&priv->shrd->mutex);
367 IWL_DEBUG_MAC80211(priv, "leave\n");
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;
376 bool error, use_rsc_tsc, use_tkip;
379 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
383 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
384 out[i] = cpu_to_le16(p1k[i]);
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,
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;
400 struct ieee80211_key_seq seq;
402 u16 p1k[IWLAGN_P1K_SIZE];
405 mutex_lock(&priv->shrd->mutex);
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);
412 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
415 IWL_ERR(priv, "Error setting key during suspend!\n");
419 switch (key->cipher) {
420 case WLAN_CIPHER_SUITE_TKIP:
422 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
423 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
425 rx_p1ks = data->tkip->rx_uni;
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);
431 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
432 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
434 memcpy(data->tkip->mic_keys.tx,
435 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
436 IWLAGN_MIC_KEY_SIZE);
438 rx_mic_key = data->tkip->mic_keys.rx_unicast;
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;
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.
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;
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);
466 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
467 IWLAGN_MIC_KEY_SIZE);
469 data->use_tkip = true;
470 data->use_rsc_tsc = true;
472 case WLAN_CIPHER_SUITE_CCMP:
474 u8 *pn = seq.ccmp.pn;
476 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
477 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
479 ieee80211_get_key_tx_seq(key, &seq);
480 aes_tx_sc->pn = cpu_to_le64(
488 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
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.
494 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
495 u8 *pn = seq.ccmp.pn;
497 ieee80211_get_key_rx_seq(key, i, &seq);
498 aes_sc->pn = cpu_to_le64(
506 data->use_rsc_tsc = true;
510 mutex_unlock(&priv->shrd->mutex);
513 static int iwlagn_send_patterns(struct iwl_priv *priv,
514 struct cfg80211_wowlan *wowlan)
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,
524 if (!wowlan->n_patterns)
527 cmd.len[0] = sizeof(*pattern_cmd) +
528 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
530 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
534 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
536 for (i = 0; i < wowlan->n_patterns; i++) {
537 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
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;
549 cmd.data[0] = pattern_cmd;
550 err = iwl_trans_send_cmd(trans(priv), &cmd);
555 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
556 struct cfg80211_wowlan *wowlan)
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 = {
566 .bssid = ctx->active.bssid_addr,
567 .use_rsc_tsc = false,
571 struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
575 if (WARN_ON(!wowlan))
578 IWL_DEBUG_MAC80211(priv, "enter\n");
579 mutex_lock(&priv->shrd->mutex);
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)) {
588 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
589 if (!key_data.rsc_tsc) {
594 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
597 * We know the last used seqno, and the uCode expects to know that
598 * one, it will increment before TX.
600 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
601 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
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.
607 for (i = 0; i < 8; i++) {
608 seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number;
610 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
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);
633 if (wowlan->rfkill_release)
634 d3_cfg_cmd.wakeup_flags |=
635 cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
637 iwl_scan_cancel_timeout(priv, 200);
639 memcpy(&rxon, &ctx->active, sizeof(rxon));
641 iwl_trans_stop_device(trans(priv));
643 priv->shrd->wowlan = true;
645 ret = iwlagn_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
649 /* now configure WoWLAN ucode */
650 ret = iwl_alive_start(priv);
654 memcpy(&ctx->staging, &rxon, sizeof(rxon));
655 ret = iwlagn_commit_rxon(priv, ctx);
659 ret = iwl_power_update_mode(priv, true);
663 if (!iwlagn_mod_params.sw_crypto) {
664 /* mark all keys clear */
665 priv->ucode_key_table = 0;
666 ctx->key_mapping_keys = 0;
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.
673 mutex_unlock(&priv->shrd->mutex);
674 ieee80211_iter_keys(priv->hw, ctx->vif,
675 iwlagn_wowlan_program_keys,
677 mutex_lock(&priv->shrd->mutex);
678 if (key_data.error) {
683 if (key_data.use_rsc_tsc) {
684 struct iwl_host_cmd rsc_tsc_cmd = {
685 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
687 .data[0] = key_data.rsc_tsc,
688 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
689 .len[0] = sizeof(*key_data.rsc_tsc),
692 ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
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),
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;
714 ret = iwl_trans_send_cmd_pdu(trans(priv),
715 REPLY_WOWLAN_KEK_KCK_MATERIAL,
716 CMD_SYNC, sizeof(kek_kck_cmd),
723 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_D3_CONFIG, CMD_SYNC,
724 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
728 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
729 CMD_SYNC, sizeof(wakeup_filter_cmd),
734 ret = iwlagn_send_patterns(priv, wowlan);
738 device_set_wakeup_enable(bus(priv)->dev, true);
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);
747 priv->shrd->wowlan = false;
748 iwlagn_prepare_restart(priv);
749 ieee80211_restart_hw(priv->hw);
751 mutex_unlock(&priv->shrd->mutex);
752 kfree(key_data.rsc_tsc);
753 IWL_DEBUG_MAC80211(priv, "leave\n");
758 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
760 struct iwl_priv *priv = hw->priv;
761 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
762 struct ieee80211_vif *vif;
764 u32 base, status = 0xffffffff;
767 IWL_DEBUG_MAC80211(priv, "enter\n");
768 mutex_lock(&priv->shrd->mutex);
770 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
771 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
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));
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));
782 spin_unlock_irqrestore(&bus(priv)->reg_lock, flags);
784 #ifdef CONFIG_IWLWIFI_DEBUGFS
786 struct iwl_trans *trans = trans(priv);
787 if (!priv->wowlan_sram)
789 kzalloc(trans->ucode_wowlan.data.len,
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);
800 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
803 priv->shrd->wowlan = false;
805 device_set_wakeup_enable(bus(priv)->dev, false);
807 iwlagn_prepare_restart(priv);
809 memset((void *)&ctx->active, 0, sizeof(ctx->active));
810 iwl_connection_init_rx_config(priv, ctx);
811 iwlagn_set_rxon_chain(priv, ctx);
813 mutex_unlock(&priv->shrd->mutex);
814 IWL_DEBUG_MAC80211(priv, "leave\n");
816 ieee80211_resume_disconnect(vif);
823 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
825 struct iwl_priv *priv = hw->priv;
827 IWL_DEBUG_MACDUMP(priv, "enter\n");
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);
832 if (iwlagn_tx_skb(priv, skb))
833 dev_kfree_skb_any(skb);
835 IWL_DEBUG_MACDUMP(priv, "leave\n");
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)
844 struct iwl_priv *priv = hw->priv;
846 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
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)
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;
858 bool is_default_wep_key = false;
860 IWL_DEBUG_MAC80211(priv, "enter\n");
862 if (iwlagn_mod_params.sw_crypto) {
863 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
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.
872 * Mark key TX-only and return 0.
874 if (vif->type == NL80211_IFTYPE_ADHOC &&
875 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
876 key->hw_key_idx = WEP_INVALID_OFFSET;
880 /* If they key was TX-only, accept deletion */
881 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
884 mutex_lock(&priv->shrd->mutex);
885 iwl_scan_cancel_timeout(priv, 100);
887 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
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
893 * In legacy wep mode, we use another host command to the uCode.
895 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
896 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
898 is_default_wep_key = !ctx->key_mapping_keys;
901 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
907 if (is_default_wep_key) {
908 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
911 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
914 * can't add key for RX, but we don't need it
915 * in the device for TX so still return 0
918 key->hw_key_idx = WEP_INVALID_OFFSET;
921 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
924 if (is_default_wep_key)
925 ret = iwl_remove_default_wep_key(priv, ctx, key);
927 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
929 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
935 mutex_unlock(&priv->shrd->mutex);
936 IWL_DEBUG_MAC80211(priv, "leave\n");
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,
947 struct iwl_priv *priv = hw->priv;
949 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
950 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
952 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
955 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
958 IWL_DEBUG_MAC80211(priv, "enter\n");
959 mutex_lock(&priv->shrd->mutex);
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);
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))
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);
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);
984 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
986 if (!priv->agg_tids_count && priv->cfg->ht_params &&
987 priv->cfg->ht_params->use_rts_for_aggregation) {
989 * switch off RTS/CTS if it was previously enabled
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);
997 case IEEE80211_AMPDU_TX_OPERATIONAL:
998 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
1000 iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, iwl_sta_id(sta),
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.
1009 if (sta_priv->max_agg_bufsize == 0)
1010 sta_priv->max_agg_bufsize =
1011 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
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.
1020 sta_priv->max_agg_bufsize =
1021 min(sta_priv->max_agg_bufsize, buf_size);
1023 if (priv->cfg->ht_params &&
1024 priv->cfg->ht_params->use_rts_for_aggregation) {
1026 * switch to RTS/CTS if it is the prefer protection
1027 * method for HT traffic
1030 sta_priv->lq_sta.lq.general_params.flags |=
1031 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
1033 priv->agg_tids_count++;
1034 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
1035 priv->agg_tids_count);
1037 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
1038 sta_priv->max_agg_bufsize;
1040 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
1041 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
1043 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
1048 mutex_unlock(&priv->shrd->mutex);
1049 IWL_DEBUG_MAC80211(priv, "leave\n");
1053 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
1054 struct ieee80211_vif *vif,
1055 struct ieee80211_sta *sta)
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;
1064 IWL_DEBUG_MAC80211(priv, "received request to add station %pM\n",
1066 mutex_lock(&priv->shrd->mutex);
1067 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
1069 sta_priv->sta_id = IWL_INVALID_STATION;
1071 atomic_set(&sta_priv->pending_frames, 0);
1072 if (vif->type == NL80211_IFTYPE_AP)
1073 sta_priv->client = true;
1075 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
1076 is_ap, sta, &sta_id);
1078 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
1080 /* Should we return success if return code is EEXIST ? */
1084 sta_priv->sta_id = sta_id;
1086 /* Initialize rate scaling */
1087 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
1089 iwl_rs_rate_init(priv, sta, sta_id);
1091 mutex_unlock(&priv->shrd->mutex);
1092 IWL_DEBUG_MAC80211(priv, "leave\n");
1097 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
1098 struct ieee80211_channel_switch *ch_switch)
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;
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.
1113 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1116 IWL_DEBUG_MAC80211(priv, "enter\n");
1118 mutex_lock(&priv->shrd->mutex);
1120 if (iwl_is_rfkill(priv->shrd))
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))
1128 if (!iwl_is_associated_ctx(ctx))
1131 if (!priv->cfg->lib->set_channel_switch)
1134 ch = channel->hw_value;
1135 if (le16_to_cpu(ctx->active.channel) == ch)
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");
1144 spin_lock_irq(&priv->shrd->lock);
1146 priv->current_ht_config.smps = conf->smps_mode;
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;
1160 ctx->ht.extension_chan_offset =
1161 IEEE80211_HT_PARAM_CHA_SEC_NONE;
1162 ctx->ht.is_40mhz = false;
1165 ctx->ht.is_40mhz = false;
1167 if ((le16_to_cpu(ctx->staging.channel) != ch))
1168 ctx->staging.flags = 0;
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);
1174 spin_unlock_irq(&priv->shrd->lock);
1178 * at this point, staging_rxon has the
1179 * configuration for channel switch
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);
1190 mutex_unlock(&priv->shrd->mutex);
1191 IWL_DEBUG_MAC80211(priv, "leave\n");
1194 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
1195 unsigned int changed_flags,
1196 unsigned int *total_flags,
1199 struct iwl_priv *priv = hw->priv;
1200 __le32 filter_or = 0, filter_nand = 0;
1201 struct iwl_rxon_context *ctx;
1203 #define CHK(test, flag) do { \
1204 if (*total_flags & (test)) \
1205 filter_or |= (flag); \
1207 filter_nand |= (flag); \
1210 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1211 changed_flags, *total_flags);
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);
1220 mutex_lock(&priv->shrd->mutex);
1222 for_each_context(priv, ctx) {
1223 ctx->staging.filter_flags &= ~filter_nand;
1224 ctx->staging.filter_flags |= filter_or;
1227 * Not committing directly because hardware can perform a scan,
1228 * but we'll eventually commit the filter flags change anyway.
1232 mutex_unlock(&priv->shrd->mutex);
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.
1240 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1241 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1244 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
1246 struct iwl_priv *priv = hw->priv;
1248 mutex_lock(&priv->shrd->mutex);
1249 IWL_DEBUG_MAC80211(priv, "enter\n");
1251 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
1252 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
1255 if (iwl_is_rfkill(priv->shrd)) {
1256 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
1261 * mac80211 will not push any more frames for transmit
1262 * until the flush is completed
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");
1271 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
1272 iwl_trans_wait_tx_queue_empty(trans(priv));
1274 mutex_unlock(&priv->shrd->mutex);
1275 IWL_DEBUG_MAC80211(priv, "leave\n");
1278 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
1279 struct ieee80211_channel *channel,
1280 enum nl80211_channel_type channel_type,
1283 struct iwl_priv *priv = hw->priv;
1284 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1287 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1290 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1293 IWL_DEBUG_MAC80211(priv, "enter\n");
1294 mutex_lock(&priv->shrd->mutex);
1296 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
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);
1307 if (!ctx->is_active) {
1308 static const struct iwl_qos_info default_qos_data = {
1311 .cw_min = cpu_to_le16(3),
1312 .cw_max = cpu_to_le16(7),
1314 .edca_txop = cpu_to_le16(1504),
1317 .cw_min = cpu_to_le16(7),
1318 .cw_max = cpu_to_le16(15),
1320 .edca_txop = cpu_to_le16(3008),
1323 .cw_min = cpu_to_le16(15),
1324 .cw_max = cpu_to_le16(1023),
1328 .cw_min = cpu_to_le16(15),
1329 .cw_max = cpu_to_le16(1023),
1335 ctx->is_active = true;
1336 ctx->qos_data = default_qos_data;
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,
1341 memcpy(ctx->staging.bssid_addr,
1342 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1344 err = iwlagn_commit_rxon(priv, ctx);
1347 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1348 RXON_FILTER_PROMISC_MSK |
1349 RXON_FILTER_CTL2HOST_MSK;
1351 err = iwlagn_commit_rxon(priv, ctx);
1353 iwlagn_disable_roc(priv);
1356 priv->hw_roc_setup = true;
1359 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1361 iwlagn_disable_roc(priv);
1364 mutex_unlock(&priv->shrd->mutex);
1365 IWL_DEBUG_MAC80211(priv, "leave\n");
1370 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
1372 struct iwl_priv *priv = hw->priv;
1374 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
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");
1387 static int iwlagn_mac_tx_sync(struct ieee80211_hw *hw,
1388 struct ieee80211_vif *vif,
1390 enum ieee80211_tx_sync_type type)
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;
1398 IWL_DEBUG_MAC80211(priv, "enter\n");
1399 mutex_lock(&priv->shrd->mutex);
1401 if (iwl_is_associated_ctx(ctx)) {
1406 if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW,
1407 &priv->shrd->status)) {
1412 ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id);
1416 if (WARN_ON(sta_id != ctx->ap_sta_id)) {
1418 goto out_remove_sta;
1421 memcpy(ctx->bssid, bssid, ETH_ALEN);
1422 ctx->preauth_bssid = true;
1424 ret = iwlagn_commit_rxon(priv, ctx);
1430 iwl_remove_station(priv, sta_id, bssid);
1432 mutex_unlock(&priv->shrd->mutex);
1433 IWL_DEBUG_MAC80211(priv, "leave\n");
1438 static void iwlagn_mac_finish_tx_sync(struct ieee80211_hw *hw,
1439 struct ieee80211_vif *vif,
1441 enum ieee80211_tx_sync_type type)
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;
1447 IWL_DEBUG_MAC80211(priv, "enter\n");
1448 mutex_lock(&priv->shrd->mutex);
1450 if (iwl_is_associated_ctx(ctx))
1453 iwl_remove_station(priv, ctx->ap_sta_id, bssid);
1454 ctx->preauth_bssid = false;
1455 /* no need to commit */
1457 mutex_unlock(&priv->shrd->mutex);
1458 IWL_DEBUG_MAC80211(priv, "leave\n");
1461 static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1462 enum ieee80211_rssi_event rssi_event)
1464 struct iwl_priv *priv = hw->priv;
1466 IWL_DEBUG_MAC80211(priv, "enter\n");
1467 mutex_lock(&priv->shrd->mutex);
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;
1476 iwlagn_send_advance_bt_config(priv);
1478 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1479 "ignoring RSSI callback\n");
1482 mutex_unlock(&priv->shrd->mutex);
1483 IWL_DEBUG_MAC80211(priv, "leave\n");
1486 static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1487 struct ieee80211_sta *sta, bool set)
1489 struct iwl_priv *priv = hw->priv;
1491 queue_work(priv->shrd->workqueue, &priv->beacon_update);
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)
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;
1509 IWL_DEBUG_MAC80211(priv, "enter\n");
1511 if (!iwl_is_ready_rf(priv->shrd)) {
1512 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1516 if (queue >= AC_NUM) {
1517 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1521 q = AC_NUM - 1 - queue;
1523 spin_lock_irqsave(&priv->shrd->lock, flags);
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));
1533 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1535 spin_unlock_irqrestore(&priv->shrd->lock, flags);
1537 IWL_DEBUG_MAC80211(priv, "leave\n");
1541 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1543 struct iwl_priv *priv = hw->priv;
1545 return priv->ibss_manager == IWL_IBSS_MANAGER;
1548 static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1550 iwl_connection_init_rx_config(priv, ctx);
1552 iwlagn_set_rxon_chain(priv, ctx);
1554 return iwlagn_commit_rxon(priv, ctx);
1557 static int iwl_setup_interface(struct iwl_priv *priv,
1558 struct iwl_rxon_context *ctx)
1560 struct ieee80211_vif *vif = ctx->vif;
1563 lockdep_assert_held(&priv->shrd->mutex);
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.
1570 priv->iw_mode = vif->type;
1572 ctx->is_active = true;
1574 err = iwl_set_mode(priv, ctx);
1576 if (!ctx->always_active)
1577 ctx->is_active = false;
1581 if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist &&
1582 vif->type == NL80211_IFTYPE_ADHOC) {
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.
1588 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1594 static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1595 struct ieee80211_vif *vif)
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;
1601 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1603 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1604 viftype, vif->addr);
1606 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1608 mutex_lock(&priv->shrd->mutex);
1610 iwlagn_disable_roc(priv);
1612 if (!iwl_is_ready_rf(priv->shrd)) {
1613 IWL_WARN(priv, "Try to add interface when device not ready\n");
1618 for_each_context(priv, tmp) {
1619 u32 possible_modes =
1620 tmp->interface_modes | tmp->exclusive_interface_modes;
1623 /* check if this busy context is exclusive */
1624 if (tmp->exclusive_interface_modes &
1625 BIT(tmp->vif->type)) {
1632 if (!(possible_modes & BIT(viftype)))
1635 /* have maybe usable context w/o interface */
1645 vif_priv->ctx = ctx;
1648 err = iwl_setup_interface(priv, ctx);
1653 priv->iw_mode = NL80211_IFTYPE_STATION;
1655 mutex_unlock(&priv->shrd->mutex);
1657 IWL_DEBUG_MAC80211(priv, "leave\n");
1661 static void iwl_teardown_interface(struct iwl_priv *priv,
1662 struct ieee80211_vif *vif,
1665 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1667 lockdep_assert_held(&priv->shrd->mutex);
1669 if (priv->scan_vif == vif) {
1670 iwl_scan_cancel_timeout(priv, 200);
1671 iwl_force_scan_end(priv);
1675 iwl_set_mode(priv, ctx);
1676 if (!ctx->always_active)
1677 ctx->is_active = false;
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.
1687 if (vif->type == NL80211_IFTYPE_ADHOC)
1688 priv->bt_traffic_load = priv->last_bt_traffic_load;
1691 static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1692 struct ieee80211_vif *vif)
1694 struct iwl_priv *priv = hw->priv;
1695 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1697 IWL_DEBUG_MAC80211(priv, "enter\n");
1699 mutex_lock(&priv->shrd->mutex);
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);
1710 iwl_teardown_interface(priv, vif, false);
1712 mutex_unlock(&priv->shrd->mutex);
1714 IWL_DEBUG_MAC80211(priv, "leave\n");
1718 static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1719 struct ieee80211_vif *vif,
1720 enum nl80211_iftype newtype, bool newp2p)
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;
1730 IWL_DEBUG_MAC80211(priv, "enter\n");
1732 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1734 mutex_lock(&priv->shrd->mutex);
1736 if (!ctx->vif || !iwl_is_ready_rf(priv->shrd)) {
1738 * Huh? But wait ... this can maybe happen when
1739 * we're in the middle of a firmware restart!
1745 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1747 if (!(interface_modes & BIT(newtype))) {
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.
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);
1765 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1766 for_each_context(priv, tmp) {
1774 * The current mode switch would be exclusive, but
1775 * another context is active ... refuse the switch.
1783 iwl_teardown_interface(priv, vif, true);
1784 vif->type = newviftype;
1786 err = iwl_setup_interface(priv, ctx);
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.
1798 mutex_unlock(&priv->shrd->mutex);
1799 IWL_DEBUG_MAC80211(priv, "leave\n");
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,
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,
1840 /* This function both allocates and initializes hw and priv. */
1841 struct ieee80211_hw *iwl_alloc_all(void)
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;
1848 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);