+++ /dev/null
-/******************************************************************************
- *
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
- * USA
- *
- * The full GNU General Public License is included in this distribution
- * in the file called COPYING.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- * BSD LICENSE
- *
- * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *****************************************************************************/
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ip.h>
-#include <linux/if_arp.h>
-#include <linux/devcoredump.h>
-#include <net/mac80211.h>
-#include <net/ieee80211_radiotap.h>
-#include <net/tcp.h>
-
-#include "iwl-op-mode.h"
-#include "iwl-io.h"
-#include "mvm.h"
-#include "sta.h"
-#include "time-event.h"
-#include "iwl-eeprom-parse.h"
-#include "iwl-phy-db.h"
-#include "testmode.h"
-#include "iwl-fw-error-dump.h"
-#include "iwl-prph.h"
-#include "iwl-csr.h"
-#include "iwl-nvm-parse.h"
-
-static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
- {
- .max = 1,
- .types = BIT(NL80211_IFTYPE_STATION),
- },
- {
- .max = 1,
- .types = BIT(NL80211_IFTYPE_AP) |
- BIT(NL80211_IFTYPE_P2P_CLIENT) |
- BIT(NL80211_IFTYPE_P2P_GO),
- },
- {
- .max = 1,
- .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
- },
-};
-
-static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
- {
- .num_different_channels = 2,
- .max_interfaces = 3,
- .limits = iwl_mvm_limits,
- .n_limits = ARRAY_SIZE(iwl_mvm_limits),
- },
-};
-
-#ifdef CONFIG_PM_SLEEP
-static const struct nl80211_wowlan_tcp_data_token_feature
-iwl_mvm_wowlan_tcp_token_feature = {
- .min_len = 0,
- .max_len = 255,
- .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
-};
-
-static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
- .tok = &iwl_mvm_wowlan_tcp_token_feature,
- .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
- sizeof(struct ethhdr) -
- sizeof(struct iphdr) -
- sizeof(struct tcphdr),
- .data_interval_max = 65535, /* __le16 in API */
- .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
- sizeof(struct ethhdr) -
- sizeof(struct iphdr) -
- sizeof(struct tcphdr),
- .seq = true,
-};
-#endif
-
-#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
-/*
- * Use the reserved field to indicate magic values.
- * these values will only be used internally by the driver,
- * and won't make it to the fw (reserved will be 0).
- * BC_FILTER_MAGIC_IP - configure the val of this attribute to
- * be the vif's ip address. in case there is not a single
- * ip address (0, or more than 1), this attribute will
- * be skipped.
- * BC_FILTER_MAGIC_MAC - set the val of this attribute to
- * the LSB bytes of the vif's mac address
- */
-enum {
- BC_FILTER_MAGIC_NONE = 0,
- BC_FILTER_MAGIC_IP,
- BC_FILTER_MAGIC_MAC,
-};
-
-static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
- {
- /* arp */
- .discard = 0,
- .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
- .attrs = {
- {
- /* frame type - arp, hw type - ethernet */
- .offset_type =
- BCAST_FILTER_OFFSET_PAYLOAD_START,
- .offset = sizeof(rfc1042_header),
- .val = cpu_to_be32(0x08060001),
- .mask = cpu_to_be32(0xffffffff),
- },
- {
- /* arp dest ip */
- .offset_type =
- BCAST_FILTER_OFFSET_PAYLOAD_START,
- .offset = sizeof(rfc1042_header) + 2 +
- sizeof(struct arphdr) +
- ETH_ALEN + sizeof(__be32) +
- ETH_ALEN,
- .mask = cpu_to_be32(0xffffffff),
- /* mark it as special field */
- .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
- },
- },
- },
- {
- /* dhcp offer bcast */
- .discard = 0,
- .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
- .attrs = {
- {
- /* udp dest port - 68 (bootp client)*/
- .offset_type = BCAST_FILTER_OFFSET_IP_END,
- .offset = offsetof(struct udphdr, dest),
- .val = cpu_to_be32(0x00440000),
- .mask = cpu_to_be32(0xffff0000),
- },
- {
- /* dhcp - lsb bytes of client hw address */
- .offset_type = BCAST_FILTER_OFFSET_IP_END,
- .offset = 38,
- .mask = cpu_to_be32(0xffffffff),
- /* mark it as special field */
- .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
- },
- },
- },
- /* last filter must be empty */
- {},
-};
-#endif
-
-void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
-{
- if (!iwl_mvm_is_d0i3_supported(mvm))
- return;
-
- IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
- spin_lock_bh(&mvm->refs_lock);
- mvm->refs[ref_type]++;
- spin_unlock_bh(&mvm->refs_lock);
- iwl_trans_ref(mvm->trans);
-}
-
-void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
-{
- if (!iwl_mvm_is_d0i3_supported(mvm))
- return;
-
- IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
- spin_lock_bh(&mvm->refs_lock);
- WARN_ON(!mvm->refs[ref_type]--);
- spin_unlock_bh(&mvm->refs_lock);
- iwl_trans_unref(mvm->trans);
-}
-
-static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
- enum iwl_mvm_ref_type except_ref)
-{
- int i, j;
-
- if (!iwl_mvm_is_d0i3_supported(mvm))
- return;
-
- spin_lock_bh(&mvm->refs_lock);
- for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
- if (except_ref == i || !mvm->refs[i])
- continue;
-
- IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
- i, mvm->refs[i]);
- for (j = 0; j < mvm->refs[i]; j++)
- iwl_trans_unref(mvm->trans);
- mvm->refs[i] = 0;
- }
- spin_unlock_bh(&mvm->refs_lock);
-}
-
-bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
-{
- int i;
- bool taken = false;
-
- if (!iwl_mvm_is_d0i3_supported(mvm))
- return true;
-
- spin_lock_bh(&mvm->refs_lock);
- for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
- if (mvm->refs[i]) {
- taken = true;
- break;
- }
- }
- spin_unlock_bh(&mvm->refs_lock);
-
- return taken;
-}
-
-int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
-{
- iwl_mvm_ref(mvm, ref_type);
-
- if (!wait_event_timeout(mvm->d0i3_exit_waitq,
- !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
- HZ)) {
- WARN_ON_ONCE(1);
- iwl_mvm_unref(mvm, ref_type);
- return -EIO;
- }
-
- return 0;
-}
-
-static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
-{
- int i;
-
- memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
- for (i = 0; i < NUM_PHY_CTX; i++) {
- mvm->phy_ctxts[i].id = i;
- mvm->phy_ctxts[i].ref = 0;
- }
-}
-
-struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
- const char *alpha2,
- enum iwl_mcc_source src_id,
- bool *changed)
-{
- struct ieee80211_regdomain *regd = NULL;
- struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mcc_update_resp *resp;
-
- IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
-
- lockdep_assert_held(&mvm->mutex);
-
- resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
- if (IS_ERR_OR_NULL(resp)) {
- IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
- PTR_ERR_OR_ZERO(resp));
- goto out;
- }
-
- if (changed)
- *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
-
- regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
- __le32_to_cpu(resp->n_channels),
- resp->channels,
- __le16_to_cpu(resp->mcc));
- /* Store the return source id */
- src_id = resp->source_id;
- kfree(resp);
- if (IS_ERR_OR_NULL(regd)) {
- IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
- PTR_ERR_OR_ZERO(regd));
- goto out;
- }
-
- IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
- regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
- mvm->lar_regdom_set = true;
- mvm->mcc_src = src_id;
-
-out:
- return regd;
-}
-
-void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
-{
- bool changed;
- struct ieee80211_regdomain *regd;
-
- if (!iwl_mvm_is_lar_supported(mvm))
- return;
-
- regd = iwl_mvm_get_current_regdomain(mvm, &changed);
- if (!IS_ERR_OR_NULL(regd)) {
- /* only update the regulatory core if changed */
- if (changed)
- regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
-
- kfree(regd);
- }
-}
-
-struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
- bool *changed)
-{
- return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
- iwl_mvm_is_wifi_mcc_supported(mvm) ?
- MCC_SOURCE_GET_CURRENT :
- MCC_SOURCE_OLD_FW, changed);
-}
-
-int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
-{
- enum iwl_mcc_source used_src;
- struct ieee80211_regdomain *regd;
- int ret;
- bool changed;
- const struct ieee80211_regdomain *r =
- rtnl_dereference(mvm->hw->wiphy->regd);
-
- if (!r)
- return -ENOENT;
-
- /* save the last source in case we overwrite it below */
- used_src = mvm->mcc_src;
- if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
- /* Notify the firmware we support wifi location updates */
- regd = iwl_mvm_get_current_regdomain(mvm, NULL);
- if (!IS_ERR_OR_NULL(regd))
- kfree(regd);
- }
-
- /* Now set our last stored MCC and source */
- regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
- &changed);
- if (IS_ERR_OR_NULL(regd))
- return -EIO;
-
- /* update cfg80211 if the regdomain was changed */
- if (changed)
- ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
- else
- ret = 0;
-
- kfree(regd);
- return ret;
-}
-
-int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
-{
- struct ieee80211_hw *hw = mvm->hw;
- int num_mac, ret, i;
- static const u32 mvm_ciphers[] = {
- WLAN_CIPHER_SUITE_WEP40,
- WLAN_CIPHER_SUITE_WEP104,
- WLAN_CIPHER_SUITE_TKIP,
- WLAN_CIPHER_SUITE_CCMP,
- };
-
- /* Tell mac80211 our characteristics */
- ieee80211_hw_set(hw, SIGNAL_DBM);
- ieee80211_hw_set(hw, SPECTRUM_MGMT);
- ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
- ieee80211_hw_set(hw, QUEUE_CONTROL);
- ieee80211_hw_set(hw, WANT_MONITOR_VIF);
- ieee80211_hw_set(hw, SUPPORTS_PS);
- ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
- ieee80211_hw_set(hw, AMPDU_AGGREGATION);
- ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
- ieee80211_hw_set(hw, CONNECTION_MONITOR);
- ieee80211_hw_set(hw, CHANCTX_STA_CSA);
- ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
- ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
-
- hw->queues = mvm->first_agg_queue;
- hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
- hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
- IEEE80211_RADIOTAP_MCS_HAVE_STBC;
- hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
- IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
- hw->rate_control_algorithm = "iwl-mvm-rs";
- hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
- hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
-
- BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
- memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
- hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
- hw->wiphy->cipher_suites = mvm->ciphers;
-
- /*
- * Enable 11w if advertised by firmware and software crypto
- * is not enabled (as the firmware will interpret some mgmt
- * packets, so enabling it with software crypto isn't safe)
- */
- if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
- !iwlwifi_mod_params.sw_crypto) {
- ieee80211_hw_set(hw, MFP_CAPABLE);
- mvm->ciphers[hw->wiphy->n_cipher_suites] =
- WLAN_CIPHER_SUITE_AES_CMAC;
- hw->wiphy->n_cipher_suites++;
- }
-
- /* currently FW API supports only one optional cipher scheme */
- if (mvm->fw->cs[0].cipher) {
- mvm->hw->n_cipher_schemes = 1;
- mvm->hw->cipher_schemes = &mvm->fw->cs[0];
- mvm->ciphers[hw->wiphy->n_cipher_suites] =
- mvm->fw->cs[0].cipher;
- hw->wiphy->n_cipher_suites++;
- }
-
- ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
- hw->wiphy->features |=
- NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
- NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
- NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
-
- hw->sta_data_size = sizeof(struct iwl_mvm_sta);
- hw->vif_data_size = sizeof(struct iwl_mvm_vif);
- hw->chanctx_data_size = sizeof(u16);
-
- hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
- BIT(NL80211_IFTYPE_P2P_CLIENT) |
- BIT(NL80211_IFTYPE_AP) |
- BIT(NL80211_IFTYPE_P2P_GO) |
- BIT(NL80211_IFTYPE_P2P_DEVICE) |
- BIT(NL80211_IFTYPE_ADHOC);
-
- hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
- hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
- if (iwl_mvm_is_lar_supported(mvm))
- hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
- else
- hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
- REGULATORY_DISABLE_BEACON_HINTS;
-
- if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
- hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
-
- hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
-
- hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
- hw->wiphy->n_iface_combinations =
- ARRAY_SIZE(iwl_mvm_iface_combinations);
-
- hw->wiphy->max_remain_on_channel_duration = 10000;
- hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
- /* we can compensate an offset of up to 3 channels = 15 MHz */
- hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
-
- /* Extract MAC address */
- memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
- hw->wiphy->addresses = mvm->addresses;
- hw->wiphy->n_addresses = 1;
-
- /* Extract additional MAC addresses if available */
- num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
- min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
-
- for (i = 1; i < num_mac; i++) {
- memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
- ETH_ALEN);
- mvm->addresses[i].addr[5]++;
- hw->wiphy->n_addresses++;
- }
-
- iwl_mvm_reset_phy_ctxts(mvm);
-
- hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
-
- hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
-
- BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
- BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
- IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
-
- if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
- mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
- else
- mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
-
- if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
- hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
- &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
- if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
- hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
- &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
-
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
- fw_has_api(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_API_LQ_SS_PARAMS))
- hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
- IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
- }
-
- hw->wiphy->hw_version = mvm->trans->hw_id;
-
- if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
- hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
- else
- hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
-
- hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
- hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
- hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
- /* we create the 802.11 header and zero length SSID IE. */
- hw->wiphy->max_sched_scan_ie_len =
- SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
- hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
- hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
-
- /*
- * the firmware uses u8 for num of iterations, but 0xff is saved for
- * infinite loop, so the maximum number of iterations is actually 254.
- */
- hw->wiphy->max_sched_scan_plan_iterations = 254;
-
- hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
- NL80211_FEATURE_LOW_PRIORITY_SCAN |
- NL80211_FEATURE_P2P_GO_OPPPS |
- NL80211_FEATURE_DYNAMIC_SMPS |
- NL80211_FEATURE_STATIC_SMPS |
- NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
-
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
- hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
- hw->wiphy->features |= NL80211_FEATURE_QUIET;
-
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
- hw->wiphy->features |=
- NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
-
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
- hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
-
- mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
-
-#ifdef CONFIG_PM_SLEEP
- if (iwl_mvm_is_d0i3_supported(mvm) &&
- device_can_wakeup(mvm->trans->dev)) {
- mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
- hw->wiphy->wowlan = &mvm->wowlan;
- }
-
- if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
- mvm->trans->ops->d3_suspend &&
- mvm->trans->ops->d3_resume &&
- device_can_wakeup(mvm->trans->dev)) {
- mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
- WIPHY_WOWLAN_DISCONNECT |
- WIPHY_WOWLAN_EAP_IDENTITY_REQ |
- WIPHY_WOWLAN_RFKILL_RELEASE |
- WIPHY_WOWLAN_NET_DETECT;
- if (!iwlwifi_mod_params.sw_crypto)
- mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
- WIPHY_WOWLAN_GTK_REKEY_FAILURE |
- WIPHY_WOWLAN_4WAY_HANDSHAKE;
-
- mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
- mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
- mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
- mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
- mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
- hw->wiphy->wowlan = &mvm->wowlan;
- }
-#endif
-
-#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
- /* assign default bcast filtering configuration */
- mvm->bcast_filters = iwl_mvm_default_bcast_filters;
-#endif
-
- ret = iwl_mvm_leds_init(mvm);
- if (ret)
- return ret;
-
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
- IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
- hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
- ieee80211_hw_set(hw, TDLS_WIDER_BW);
- }
-
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
- IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
- hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
- }
-
- hw->netdev_features |= mvm->cfg->features;
- if (!iwl_mvm_is_csum_supported(mvm))
- hw->netdev_features &= ~NETIF_F_RXCSUM;
-
- ret = ieee80211_register_hw(mvm->hw);
- if (ret)
- iwl_mvm_leds_exit(mvm);
-
- return ret;
-}
-
-static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
- struct ieee80211_sta *sta,
- struct sk_buff *skb)
-{
- struct iwl_mvm_sta *mvmsta;
- bool defer = false;
-
- /*
- * double check the IN_D0I3 flag both before and after
- * taking the spinlock, in order to prevent taking
- * the spinlock when not needed.
- */
- if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
- return false;
-
- spin_lock(&mvm->d0i3_tx_lock);
- /*
- * testing the flag again ensures the skb dequeue
- * loop (on d0i3 exit) hasn't run yet.
- */
- if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
- goto out;
-
- mvmsta = iwl_mvm_sta_from_mac80211(sta);
- if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
- mvmsta->sta_id != mvm->d0i3_ap_sta_id)
- goto out;
-
- __skb_queue_tail(&mvm->d0i3_tx, skb);
- ieee80211_stop_queues(mvm->hw);
-
- /* trigger wakeup */
- iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
- iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
-
- defer = true;
-out:
- spin_unlock(&mvm->d0i3_tx_lock);
- return defer;
-}
-
-static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
- struct ieee80211_tx_control *control,
- struct sk_buff *skb)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct ieee80211_sta *sta = control->sta;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ieee80211_hdr *hdr = (void *)skb->data;
-
- if (iwl_mvm_is_radio_killed(mvm)) {
- IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
- goto drop;
- }
-
- if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
- !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
- !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
- goto drop;
-
- /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
- if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
- ieee80211_is_mgmt(hdr->frame_control) &&
- !ieee80211_is_deauth(hdr->frame_control) &&
- !ieee80211_is_disassoc(hdr->frame_control) &&
- !ieee80211_is_action(hdr->frame_control)))
- sta = NULL;
-
- if (sta) {
- if (iwl_mvm_defer_tx(mvm, sta, skb))
- return;
- if (iwl_mvm_tx_skb(mvm, skb, sta))
- goto drop;
- return;
- }
-
- if (iwl_mvm_tx_skb_non_sta(mvm, skb))
- goto drop;
- return;
- drop:
- ieee80211_free_txskb(hw, skb);
-}
-
-static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
-{
- if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
- return false;
- return true;
-}
-
-static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
-{
- if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
- return false;
- if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
- return true;
-
- /* enabled by default */
- return true;
-}
-
-#define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
- do { \
- if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
- break; \
- iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
- } while (0)
-
-static void
-iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
- enum ieee80211_ampdu_mlme_action action)
-{
- struct iwl_fw_dbg_trigger_tlv *trig;
- struct iwl_fw_dbg_trigger_ba *ba_trig;
-
- if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
- return;
-
- trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
- ba_trig = (void *)trig->data;
-
- if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
- return;
-
- switch (action) {
- case IEEE80211_AMPDU_TX_OPERATIONAL: {
- struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
- struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
-
- CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
- "TX AGG START: MAC %pM tid %d ssn %d\n",
- sta->addr, tid, tid_data->ssn);
- break;
- }
- case IEEE80211_AMPDU_TX_STOP_CONT:
- CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
- "TX AGG STOP: MAC %pM tid %d\n",
- sta->addr, tid);
- break;
- case IEEE80211_AMPDU_RX_START:
- CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
- "RX AGG START: MAC %pM tid %d ssn %d\n",
- sta->addr, tid, rx_ba_ssn);
- break;
- case IEEE80211_AMPDU_RX_STOP:
- CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
- "RX AGG STOP: MAC %pM tid %d\n",
- sta->addr, tid);
- break;
- default:
- break;
- }
-}
-
-static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- enum ieee80211_ampdu_mlme_action action,
- struct ieee80211_sta *sta, u16 tid,
- u16 *ssn, u8 buf_size, bool amsdu)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
- bool tx_agg_ref = false;
-
- IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
- sta->addr, tid, action);
-
- if (!(mvm->nvm_data->sku_cap_11n_enable))
- return -EACCES;
-
- /* return from D0i3 before starting a new Tx aggregation */
- switch (action) {
- case IEEE80211_AMPDU_TX_START:
- case IEEE80211_AMPDU_TX_STOP_CONT:
- case IEEE80211_AMPDU_TX_STOP_FLUSH:
- case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
- case IEEE80211_AMPDU_TX_OPERATIONAL:
- /*
- * for tx start, wait synchronously until D0i3 exit to
- * get the correct sequence number for the tid.
- * additionally, some other ampdu actions use direct
- * target access, which is not handled automatically
- * by the trans layer (unlike commands), so wait for
- * d0i3 exit in these cases as well.
- */
- ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
- if (ret)
- return ret;
-
- tx_agg_ref = true;
- break;
- default:
- break;
- }
-
- mutex_lock(&mvm->mutex);
-
- switch (action) {
- case IEEE80211_AMPDU_RX_START:
- if (!iwl_enable_rx_ampdu(mvm->cfg)) {
- ret = -EINVAL;
- break;
- }
- ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
- break;
- case IEEE80211_AMPDU_RX_STOP:
- ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
- break;
- case IEEE80211_AMPDU_TX_START:
- if (!iwl_enable_tx_ampdu(mvm->cfg)) {
- ret = -EINVAL;
- break;
- }
- ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
- break;
- case IEEE80211_AMPDU_TX_STOP_CONT:
- ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
- break;
- case IEEE80211_AMPDU_TX_STOP_FLUSH:
- case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
- ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
- break;
- case IEEE80211_AMPDU_TX_OPERATIONAL:
- ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
- break;
- default:
- WARN_ON_ONCE(1);
- ret = -EINVAL;
- break;
- }
-
- if (!ret) {
- u16 rx_ba_ssn = 0;
-
- if (action == IEEE80211_AMPDU_RX_START)
- rx_ba_ssn = *ssn;
-
- iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
- rx_ba_ssn, action);
- }
- mutex_unlock(&mvm->mutex);
-
- /*
- * If the tid is marked as started, we won't use it for offloaded
- * traffic on the next D0i3 entry. It's safe to unref.
- */
- if (tx_agg_ref)
- iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
-
- return ret;
-}
-
-static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm *mvm = data;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- mvmvif->uploaded = false;
- mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
-
- spin_lock_bh(&mvm->time_event_lock);
- iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
- spin_unlock_bh(&mvm->time_event_lock);
-
- mvmvif->phy_ctxt = NULL;
- memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
-}
-
-static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
- const void *data, size_t datalen)
-{
- const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
- ssize_t bytes_read;
- ssize_t bytes_read_trans;
-
- if (offset < dump_ptrs->op_mode_len) {
- bytes_read = min_t(ssize_t, count,
- dump_ptrs->op_mode_len - offset);
- memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
- bytes_read);
- offset += bytes_read;
- count -= bytes_read;
-
- if (count == 0)
- return bytes_read;
- } else {
- bytes_read = 0;
- }
-
- if (!dump_ptrs->trans_ptr)
- return bytes_read;
-
- offset -= dump_ptrs->op_mode_len;
- bytes_read_trans = min_t(ssize_t, count,
- dump_ptrs->trans_ptr->len - offset);
- memcpy(buffer + bytes_read,
- (u8 *)dump_ptrs->trans_ptr->data + offset,
- bytes_read_trans);
-
- return bytes_read + bytes_read_trans;
-}
-
-static void iwl_mvm_free_coredump(const void *data)
-{
- const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
-
- vfree(fw_error_dump->op_mode_ptr);
- vfree(fw_error_dump->trans_ptr);
- kfree(fw_error_dump);
-}
-
-static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
- struct iwl_fw_error_dump_data **dump_data)
-{
- struct iwl_fw_error_dump_fifo *fifo_hdr;
- u32 *fifo_data;
- u32 fifo_len;
- unsigned long flags;
- int i, j;
-
- if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
- return;
-
- /* Pull RXF data from all RXFs */
- for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
- /*
- * Keep aside the additional offset that might be needed for
- * next RXF
- */
- u32 offset_diff = RXF_DIFF_FROM_PREV * i;
-
- fifo_hdr = (void *)(*dump_data)->data;
- fifo_data = (void *)fifo_hdr->data;
- fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
-
- /* No need to try to read the data if the length is 0 */
- if (fifo_len == 0)
- continue;
-
- /* Add a TLV for the RXF */
- (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
- (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
-
- fifo_hdr->fifo_num = cpu_to_le32(i);
- fifo_hdr->available_bytes =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- RXF_RD_D_SPACE +
- offset_diff));
- fifo_hdr->wr_ptr =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- RXF_RD_WR_PTR +
- offset_diff));
- fifo_hdr->rd_ptr =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- RXF_RD_RD_PTR +
- offset_diff));
- fifo_hdr->fence_ptr =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- RXF_RD_FENCE_PTR +
- offset_diff));
- fifo_hdr->fence_mode =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- RXF_SET_FENCE_MODE +
- offset_diff));
-
- /* Lock fence */
- iwl_trans_write_prph(mvm->trans,
- RXF_SET_FENCE_MODE + offset_diff, 0x1);
- /* Set fence pointer to the same place like WR pointer */
- iwl_trans_write_prph(mvm->trans,
- RXF_LD_WR2FENCE + offset_diff, 0x1);
- /* Set fence offset */
- iwl_trans_write_prph(mvm->trans,
- RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
- 0x0);
-
- /* Read FIFO */
- fifo_len /= sizeof(u32); /* Size in DWORDS */
- for (j = 0; j < fifo_len; j++)
- fifo_data[j] = iwl_trans_read_prph(mvm->trans,
- RXF_FIFO_RD_FENCE_INC +
- offset_diff);
- *dump_data = iwl_fw_error_next_data(*dump_data);
- }
-
- /* Pull TXF data from all TXFs */
- for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
- /* Mark the number of TXF we're pulling now */
- iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
-
- fifo_hdr = (void *)(*dump_data)->data;
- fifo_data = (void *)fifo_hdr->data;
- fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
-
- /* No need to try to read the data if the length is 0 */
- if (fifo_len == 0)
- continue;
-
- /* Add a TLV for the FIFO */
- (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
- (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
-
- fifo_hdr->fifo_num = cpu_to_le32(i);
- fifo_hdr->available_bytes =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- TXF_FIFO_ITEM_CNT));
- fifo_hdr->wr_ptr =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- TXF_WR_PTR));
- fifo_hdr->rd_ptr =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- TXF_RD_PTR));
- fifo_hdr->fence_ptr =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- TXF_FENCE_PTR));
- fifo_hdr->fence_mode =
- cpu_to_le32(iwl_trans_read_prph(mvm->trans,
- TXF_LOCK_FENCE));
-
- /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
- iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
- TXF_WR_PTR);
-
- /* Dummy-read to advance the read pointer to the head */
- iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
-
- /* Read FIFO */
- fifo_len /= sizeof(u32); /* Size in DWORDS */
- for (j = 0; j < fifo_len; j++)
- fifo_data[j] = iwl_trans_read_prph(mvm->trans,
- TXF_READ_MODIFY_DATA);
- *dump_data = iwl_fw_error_next_data(*dump_data);
- }
-
- iwl_trans_release_nic_access(mvm->trans, &flags);
-}
-
-void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
-{
- if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
- !mvm->fw_dump_desc)
- return;
-
- kfree(mvm->fw_dump_desc);
- mvm->fw_dump_desc = NULL;
-}
-
-#define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
-#define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
-
-void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
-{
- struct iwl_fw_error_dump_file *dump_file;
- struct iwl_fw_error_dump_data *dump_data;
- struct iwl_fw_error_dump_info *dump_info;
- struct iwl_fw_error_dump_mem *dump_mem;
- struct iwl_fw_error_dump_trigger_desc *dump_trig;
- struct iwl_mvm_dump_ptrs *fw_error_dump;
- u32 sram_len, sram_ofs;
- u32 file_len, fifo_data_len = 0;
- u32 smem_len = mvm->cfg->smem_len;
- u32 sram2_len = mvm->cfg->dccm2_len;
- bool monitor_dump_only = false;
-
- lockdep_assert_held(&mvm->mutex);
-
- /* there's no point in fw dump if the bus is dead */
- if (test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
- IWL_ERR(mvm, "Skip fw error dump since bus is dead\n");
- return;
- }
-
- if (mvm->fw_dump_trig &&
- mvm->fw_dump_trig->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)
- monitor_dump_only = true;
-
- fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
- if (!fw_error_dump)
- return;
-
- /* SRAM - include stack CCM if driver knows the values for it */
- if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
- const struct fw_img *img;
-
- img = &mvm->fw->img[mvm->cur_ucode];
- sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
- sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
- } else {
- sram_ofs = mvm->cfg->dccm_offset;
- sram_len = mvm->cfg->dccm_len;
- }
-
- /* reading RXF/TXF sizes */
- if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
- struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
- int i;
-
- fifo_data_len = 0;
-
- /* Count RXF size */
- for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
- if (!mem_cfg->rxfifo_size[i])
- continue;
-
- /* Add header info */
- fifo_data_len += mem_cfg->rxfifo_size[i] +
- sizeof(*dump_data) +
- sizeof(struct iwl_fw_error_dump_fifo);
- }
-
- for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
- if (!mem_cfg->txfifo_size[i])
- continue;
-
- /* Add header info */
- fifo_data_len += mem_cfg->txfifo_size[i] +
- sizeof(*dump_data) +
- sizeof(struct iwl_fw_error_dump_fifo);
- }
- }
-
- file_len = sizeof(*dump_file) +
- sizeof(*dump_data) * 2 +
- sram_len + sizeof(*dump_mem) +
- fifo_data_len +
- sizeof(*dump_info);
-
- /* Make room for the SMEM, if it exists */
- if (smem_len)
- file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
-
- /* Make room for the secondary SRAM, if it exists */
- if (sram2_len)
- file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
-
- /* Make room for fw's virtual image pages, if it exists */
- if (mvm->fw->img[mvm->cur_ucode].paging_mem_size)
- file_len += mvm->num_of_paging_blk *
- (sizeof(*dump_data) +
- sizeof(struct iwl_fw_error_dump_paging) +
- PAGING_BLOCK_SIZE);
-
- /* If we only want a monitor dump, reset the file length */
- if (monitor_dump_only) {
- file_len = sizeof(*dump_file) + sizeof(*dump_data) +
- sizeof(*dump_info);
- }
-
- /*
- * In 8000 HW family B-step include the ICCM (which resides separately)
- */
- if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
- CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
- file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
- IWL8260_ICCM_LEN;
-
- if (mvm->fw_dump_desc)
- file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
- mvm->fw_dump_desc->len;
-
- dump_file = vzalloc(file_len);
- if (!dump_file) {
- kfree(fw_error_dump);
- iwl_mvm_free_fw_dump_desc(mvm);
- return;
- }
-
- fw_error_dump->op_mode_ptr = dump_file;
-
- dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
- dump_data = (void *)dump_file->data;
-
- dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
- dump_data->len = cpu_to_le32(sizeof(*dump_info));
- dump_info = (void *) dump_data->data;
- dump_info->device_family =
- mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
- cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
- cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
- dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
- memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
- sizeof(dump_info->fw_human_readable));
- strncpy(dump_info->dev_human_readable, mvm->cfg->name,
- sizeof(dump_info->dev_human_readable));
- strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
- sizeof(dump_info->bus_human_readable));
-
- dump_data = iwl_fw_error_next_data(dump_data);
- /* We only dump the FIFOs if the FW is in error state */
- if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
- iwl_mvm_dump_fifos(mvm, &dump_data);
-
- if (mvm->fw_dump_desc) {
- dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
- dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
- mvm->fw_dump_desc->len);
- dump_trig = (void *)dump_data->data;
- memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
- sizeof(*dump_trig) + mvm->fw_dump_desc->len);
-
- /* now we can free this copy */
- iwl_mvm_free_fw_dump_desc(mvm);
- dump_data = iwl_fw_error_next_data(dump_data);
- }
-
- /* In case we only want monitor dump, skip to dump trasport data */
- if (monitor_dump_only)
- goto dump_trans_data;
-
- dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
- dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
- dump_mem = (void *)dump_data->data;
- dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
- dump_mem->offset = cpu_to_le32(sram_ofs);
- iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
- sram_len);
-
- if (smem_len) {
- dump_data = iwl_fw_error_next_data(dump_data);
- dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
- dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
- dump_mem = (void *)dump_data->data;
- dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
- dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
- iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
- dump_mem->data, smem_len);
- }
-
- if (sram2_len) {
- dump_data = iwl_fw_error_next_data(dump_data);
- dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
- dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
- dump_mem = (void *)dump_data->data;
- dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
- dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
- iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
- dump_mem->data, sram2_len);
- }
-
- if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
- CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
- dump_data = iwl_fw_error_next_data(dump_data);
- dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
- dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
- sizeof(*dump_mem));
- dump_mem = (void *)dump_data->data;
- dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
- dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
- iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
- dump_mem->data, IWL8260_ICCM_LEN);
- }
-
- /* Dump fw's virtual image */
- if (mvm->fw->img[mvm->cur_ucode].paging_mem_size) {
- u32 i;
-
- for (i = 1; i < mvm->num_of_paging_blk + 1; i++) {
- struct iwl_fw_error_dump_paging *paging;
- struct page *pages =
- mvm->fw_paging_db[i].fw_paging_block;
-
- dump_data = iwl_fw_error_next_data(dump_data);
- dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING);
- dump_data->len = cpu_to_le32(sizeof(*paging) +
- PAGING_BLOCK_SIZE);
- paging = (void *)dump_data->data;
- paging->index = cpu_to_le32(i);
- memcpy(paging->data, page_address(pages),
- PAGING_BLOCK_SIZE);
- }
- }
-
-dump_trans_data:
- fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans,
- mvm->fw_dump_trig);
- fw_error_dump->op_mode_len = file_len;
- if (fw_error_dump->trans_ptr)
- file_len += fw_error_dump->trans_ptr->len;
- dump_file->file_len = cpu_to_le32(file_len);
-
- dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
- GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
-
- mvm->fw_dump_trig = NULL;
- clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
-}
-
-struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
- .trig_desc = {
- .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
- },
-};
-
-static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
-{
- /* clear the D3 reconfig, we only need it to avoid dumping a
- * firmware coredump on reconfiguration, we shouldn't do that
- * on D3->D0 transition
- */
- if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
- mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
- iwl_mvm_fw_error_dump(mvm);
- }
-
- /* cleanup all stale references (scan, roc), but keep the
- * ucode_down ref until reconfig is complete
- */
- iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
-
- iwl_trans_stop_device(mvm->trans);
-
- mvm->scan_status = 0;
- mvm->ps_disabled = false;
- mvm->calibrating = false;
-
- /* just in case one was running */
- ieee80211_remain_on_channel_expired(mvm->hw);
-
- /*
- * cleanup all interfaces, even inactive ones, as some might have
- * gone down during the HW restart
- */
- ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
-
- mvm->p2p_device_vif = NULL;
- mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
-
- iwl_mvm_reset_phy_ctxts(mvm);
- memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
- memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
- memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
- memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
- memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
- memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
- memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
- memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
-
- ieee80211_wake_queues(mvm->hw);
-
- /* clear any stale d0i3 state */
- clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
-
- mvm->vif_count = 0;
- mvm->rx_ba_sessions = 0;
- mvm->fw_dbg_conf = FW_DBG_INVALID;
-
- /* keep statistics ticking */
- iwl_mvm_accu_radio_stats(mvm);
-}
-
-int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
-{
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- /* Clean up some internal and mac80211 state on restart */
- if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
- iwl_mvm_restart_cleanup(mvm);
-
- ret = iwl_mvm_up(mvm);
-
- if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
- /* Something went wrong - we need to finish some cleanup
- * that normally iwl_mvm_mac_restart_complete() below
- * would do.
- */
- clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
- iwl_mvm_d0i3_enable_tx(mvm, NULL);
- }
-
- return ret;
-}
-
-static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- /* Some hw restart cleanups must not hold the mutex */
- if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
- /*
- * Make sure we are out of d0i3. This is needed
- * to make sure the reference accounting is correct
- * (and there is no stale d0i3_exit_work).
- */
- wait_event_timeout(mvm->d0i3_exit_waitq,
- !test_bit(IWL_MVM_STATUS_IN_D0I3,
- &mvm->status),
- HZ);
- }
-
- mutex_lock(&mvm->mutex);
- ret = __iwl_mvm_mac_start(mvm);
- mutex_unlock(&mvm->mutex);
-
- return ret;
-}
-
-static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
-{
- int ret;
-
- mutex_lock(&mvm->mutex);
-
- clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
- iwl_mvm_d0i3_enable_tx(mvm, NULL);
- ret = iwl_mvm_update_quotas(mvm, true, NULL);
- if (ret)
- IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
- ret);
-
- /* allow transport/FW low power modes */
- iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
-
- /*
- * If we have TDLS peers, remove them. We don't know the last seqno/PN
- * of packets the FW sent out, so we must reconnect.
- */
- iwl_mvm_teardown_tdls_peers(mvm);
-
- mutex_unlock(&mvm->mutex);
-}
-
-static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
-{
- if (!iwl_mvm_is_d0i3_supported(mvm))
- return;
-
- if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
- if (!wait_event_timeout(mvm->d0i3_exit_waitq,
- !test_bit(IWL_MVM_STATUS_IN_D0I3,
- &mvm->status),
- HZ))
- WARN_ONCE(1, "D0i3 exit on resume timed out\n");
-}
-
-static void
-iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
- enum ieee80211_reconfig_type reconfig_type)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- switch (reconfig_type) {
- case IEEE80211_RECONFIG_TYPE_RESTART:
- iwl_mvm_restart_complete(mvm);
- break;
- case IEEE80211_RECONFIG_TYPE_SUSPEND:
- iwl_mvm_resume_complete(mvm);
- break;
- }
-}
-
-void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
-{
- lockdep_assert_held(&mvm->mutex);
-
- /* firmware counters are obviously reset now, but we shouldn't
- * partially track so also clear the fw_reset_accu counters.
- */
- memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
-
- /*
- * Disallow low power states when the FW is down by taking
- * the UCODE_DOWN ref. in case of ongoing hw restart the
- * ref is already taken, so don't take it again.
- */
- if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
- iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
-
- /* async_handlers_wk is now blocked */
-
- /*
- * The work item could be running or queued if the
- * ROC time event stops just as we get here.
- */
- flush_work(&mvm->roc_done_wk);
-
- iwl_trans_stop_device(mvm->trans);
-
- iwl_mvm_async_handlers_purge(mvm);
- /* async_handlers_list is empty and will stay empty: HW is stopped */
-
- /* the fw is stopped, the aux sta is dead: clean up driver state */
- iwl_mvm_del_aux_sta(mvm);
-
- /*
- * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
- * won't be called in this case).
- * But make sure to cleanup interfaces that have gone down before/during
- * HW restart was requested.
- */
- if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
- ieee80211_iterate_interfaces(mvm->hw, 0,
- iwl_mvm_cleanup_iterator, mvm);
-
- /* We shouldn't have any UIDs still set. Loop over all the UIDs to
- * make sure there's nothing left there and warn if any is found.
- */
- if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
- int i;
-
- for (i = 0; i < mvm->max_scans; i++) {
- if (WARN_ONCE(mvm->scan_uid_status[i],
- "UMAC scan UID %d status was not cleaned\n",
- i))
- mvm->scan_uid_status[i] = 0;
- }
- }
-
- mvm->ucode_loaded = false;
-}
-
-static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- flush_work(&mvm->d0i3_exit_work);
- flush_work(&mvm->async_handlers_wk);
- cancel_delayed_work_sync(&mvm->fw_dump_wk);
- iwl_mvm_free_fw_dump_desc(mvm);
-
- mutex_lock(&mvm->mutex);
- __iwl_mvm_mac_stop(mvm);
- mutex_unlock(&mvm->mutex);
-
- /*
- * The worker might have been waiting for the mutex, let it run and
- * discover that its list is now empty.
- */
- cancel_work_sync(&mvm->async_handlers_wk);
-}
-
-static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
-{
- u16 i;
-
- lockdep_assert_held(&mvm->mutex);
-
- for (i = 0; i < NUM_PHY_CTX; i++)
- if (!mvm->phy_ctxts[i].ref)
- return &mvm->phy_ctxts[i];
-
- IWL_ERR(mvm, "No available PHY context\n");
- return NULL;
-}
-
-static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- s16 tx_power)
-{
- struct iwl_dev_tx_power_cmd cmd = {
- .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
- .v2.mac_context_id =
- cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
- .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
- };
- int len = sizeof(cmd);
-
- if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
- cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
-
- if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
- len = sizeof(cmd.v2);
-
- return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
-}
-
-static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- int ret;
-
- mvmvif->mvm = mvm;
-
- /*
- * make sure D0i3 exit is completed, otherwise a target access
- * during tx queue configuration could be done when still in
- * D0i3 state.
- */
- ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
- if (ret)
- return ret;
-
- /*
- * Not much to do here. The stack will not allow interface
- * types or combinations that we didn't advertise, so we
- * don't really have to check the types.
- */
-
- mutex_lock(&mvm->mutex);
-
- /* make sure that beacon statistics don't go backwards with FW reset */
- if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
- mvmvif->beacon_stats.accu_num_beacons +=
- mvmvif->beacon_stats.num_beacons;
-
- /* Allocate resources for the MAC context, and add it to the fw */
- ret = iwl_mvm_mac_ctxt_init(mvm, vif);
- if (ret)
- goto out_unlock;
-
- /* Counting number of interfaces is needed for legacy PM */
- if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
- mvm->vif_count++;
-
- /*
- * The AP binding flow can be done only after the beacon
- * template is configured (which happens only in the mac80211
- * start_ap() flow), and adding the broadcast station can happen
- * only after the binding.
- * In addition, since modifying the MAC before adding a bcast
- * station is not allowed by the FW, delay the adding of MAC context to
- * the point where we can also add the bcast station.
- * In short: there's not much we can do at this point, other than
- * allocating resources :)
- */
- if (vif->type == NL80211_IFTYPE_AP ||
- vif->type == NL80211_IFTYPE_ADHOC) {
- ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
- if (ret) {
- IWL_ERR(mvm, "Failed to allocate bcast sta\n");
- goto out_release;
- }
-
- iwl_mvm_vif_dbgfs_register(mvm, vif);
- goto out_unlock;
- }
-
- mvmvif->features |= hw->netdev_features;
-
- ret = iwl_mvm_mac_ctxt_add(mvm, vif);
- if (ret)
- goto out_release;
-
- ret = iwl_mvm_power_update_mac(mvm);
- if (ret)
- goto out_remove_mac;
-
- /* beacon filtering */
- ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
- if (ret)
- goto out_remove_mac;
-
- if (!mvm->bf_allowed_vif &&
- vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
- mvm->bf_allowed_vif = mvmvif;
- vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
- IEEE80211_VIF_SUPPORTS_CQM_RSSI;
- }
-
- /*
- * P2P_DEVICE interface does not have a channel context assigned to it,
- * so a dedicated PHY context is allocated to it and the corresponding
- * MAC context is bound to it at this stage.
- */
- if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
-
- mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
- if (!mvmvif->phy_ctxt) {
- ret = -ENOSPC;
- goto out_free_bf;
- }
-
- iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
- ret = iwl_mvm_binding_add_vif(mvm, vif);
- if (ret)
- goto out_unref_phy;
-
- ret = iwl_mvm_add_bcast_sta(mvm, vif);
- if (ret)
- goto out_unbind;
-
- /* Save a pointer to p2p device vif, so it can later be used to
- * update the p2p device MAC when a GO is started/stopped */
- mvm->p2p_device_vif = vif;
- }
-
- iwl_mvm_vif_dbgfs_register(mvm, vif);
- goto out_unlock;
-
- out_unbind:
- iwl_mvm_binding_remove_vif(mvm, vif);
- out_unref_phy:
- iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
- out_free_bf:
- if (mvm->bf_allowed_vif == mvmvif) {
- mvm->bf_allowed_vif = NULL;
- vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
- IEEE80211_VIF_SUPPORTS_CQM_RSSI);
- }
- out_remove_mac:
- mvmvif->phy_ctxt = NULL;
- iwl_mvm_mac_ctxt_remove(mvm, vif);
- out_release:
- if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
- mvm->vif_count--;
-
- iwl_mvm_mac_ctxt_release(mvm, vif);
- out_unlock:
- mutex_unlock(&mvm->mutex);
-
- iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
-
- return ret;
-}
-
-static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
-
- if (tfd_msk) {
- /*
- * mac80211 first removes all the stations of the vif and
- * then removes the vif. When it removes a station it also
- * flushes the AMPDU session. So by now, all the AMPDU sessions
- * of all the stations of this vif are closed, and the queues
- * of these AMPDU sessions are properly closed.
- * We still need to take care of the shared queues of the vif.
- * Flush them here.
- */
- mutex_lock(&mvm->mutex);
- iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
- mutex_unlock(&mvm->mutex);
-
- /*
- * There are transports that buffer a few frames in the host.
- * For these, the flush above isn't enough since while we were
- * flushing, the transport might have sent more frames to the
- * device. To solve this, wait here until the transport is
- * empty. Technically, this could have replaced the flush
- * above, but flush is much faster than draining. So flush
- * first, and drain to make sure we have no frames in the
- * transport anymore.
- * If a station still had frames on the shared queues, it is
- * already marked as draining, so to complete the draining, we
- * just need to wait until the transport is empty.
- */
- iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
- }
-
- if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
- /*
- * Flush the ROC worker which will flush the OFFCHANNEL queue.
- * We assume here that all the packets sent to the OFFCHANNEL
- * queue are sent in ROC session.
- */
- flush_work(&mvm->roc_done_wk);
- } else {
- /*
- * By now, all the AC queues are empty. The AGG queues are
- * empty too. We already got all the Tx responses for all the
- * packets in the queues. The drain work can have been
- * triggered. Flush it.
- */
- flush_work(&mvm->sta_drained_wk);
- }
-}
-
-static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- iwl_mvm_prepare_mac_removal(mvm, vif);
-
- mutex_lock(&mvm->mutex);
-
- if (mvm->bf_allowed_vif == mvmvif) {
- mvm->bf_allowed_vif = NULL;
- vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
- IEEE80211_VIF_SUPPORTS_CQM_RSSI);
- }
-
- iwl_mvm_vif_dbgfs_clean(mvm, vif);
-
- /*
- * For AP/GO interface, the tear down of the resources allocated to the
- * interface is be handled as part of the stop_ap flow.
- */
- if (vif->type == NL80211_IFTYPE_AP ||
- vif->type == NL80211_IFTYPE_ADHOC) {
-#ifdef CONFIG_NL80211_TESTMODE
- if (vif == mvm->noa_vif) {
- mvm->noa_vif = NULL;
- mvm->noa_duration = 0;
- }
-#endif
- iwl_mvm_dealloc_bcast_sta(mvm, vif);
- goto out_release;
- }
-
- if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
- mvm->p2p_device_vif = NULL;
- iwl_mvm_rm_bcast_sta(mvm, vif);
- iwl_mvm_binding_remove_vif(mvm, vif);
- iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
- mvmvif->phy_ctxt = NULL;
- }
-
- if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
- mvm->vif_count--;
-
- iwl_mvm_power_update_mac(mvm);
- iwl_mvm_mac_ctxt_remove(mvm, vif);
-
-out_release:
- iwl_mvm_mac_ctxt_release(mvm, vif);
- mutex_unlock(&mvm->mutex);
-}
-
-static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
-{
- return 0;
-}
-
-struct iwl_mvm_mc_iter_data {
- struct iwl_mvm *mvm;
- int port_id;
-};
-
-static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_mc_iter_data *data = _data;
- struct iwl_mvm *mvm = data->mvm;
- struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
- int ret, len;
-
- /* if we don't have free ports, mcast frames will be dropped */
- if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
- return;
-
- if (vif->type != NL80211_IFTYPE_STATION ||
- !vif->bss_conf.assoc)
- return;
-
- cmd->port_id = data->port_id++;
- memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
- len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
-
- ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
- if (ret)
- IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
-}
-
-static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
-{
- struct iwl_mvm_mc_iter_data iter_data = {
- .mvm = mvm,
- };
-
- lockdep_assert_held(&mvm->mutex);
-
- if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
- return;
-
- ieee80211_iterate_active_interfaces_atomic(
- mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
- iwl_mvm_mc_iface_iterator, &iter_data);
-}
-
-static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
- struct netdev_hw_addr_list *mc_list)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mcast_filter_cmd *cmd;
- struct netdev_hw_addr *addr;
- int addr_count;
- bool pass_all;
- int len;
-
- addr_count = netdev_hw_addr_list_count(mc_list);
- pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
- IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
- if (pass_all)
- addr_count = 0;
-
- len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
- cmd = kzalloc(len, GFP_ATOMIC);
- if (!cmd)
- return 0;
-
- if (pass_all) {
- cmd->pass_all = 1;
- return (u64)(unsigned long)cmd;
- }
-
- netdev_hw_addr_list_for_each(addr, mc_list) {
- IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
- cmd->count, addr->addr);
- memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
- addr->addr, ETH_ALEN);
- cmd->count++;
- }
-
- return (u64)(unsigned long)cmd;
-}
-
-static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
- unsigned int changed_flags,
- unsigned int *total_flags,
- u64 multicast)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
-
- mutex_lock(&mvm->mutex);
-
- /* replace previous configuration */
- kfree(mvm->mcast_filter_cmd);
- mvm->mcast_filter_cmd = cmd;
-
- if (!cmd)
- goto out;
-
- iwl_mvm_recalc_multicast(mvm);
-out:
- mutex_unlock(&mvm->mutex);
- *total_flags = 0;
-}
-
-static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- unsigned int filter_flags,
- unsigned int changed_flags)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- /* We support only filter for probe requests */
- if (!(changed_flags & FIF_PROBE_REQ))
- return;
-
- /* Supported only for p2p client interfaces */
- if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
- !vif->p2p)
- return;
-
- mutex_lock(&mvm->mutex);
- iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
- mutex_unlock(&mvm->mutex);
-}
-
-#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
-struct iwl_bcast_iter_data {
- struct iwl_mvm *mvm;
- struct iwl_bcast_filter_cmd *cmd;
- u8 current_filter;
-};
-
-static void
-iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
- const struct iwl_fw_bcast_filter *in_filter,
- struct iwl_fw_bcast_filter *out_filter)
-{
- struct iwl_fw_bcast_filter_attr *attr;
- int i;
-
- memcpy(out_filter, in_filter, sizeof(*out_filter));
-
- for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
- attr = &out_filter->attrs[i];
-
- if (!attr->mask)
- break;
-
- switch (attr->reserved1) {
- case cpu_to_le16(BC_FILTER_MAGIC_IP):
- if (vif->bss_conf.arp_addr_cnt != 1) {
- attr->mask = 0;
- continue;
- }
-
- attr->val = vif->bss_conf.arp_addr_list[0];
- break;
- case cpu_to_le16(BC_FILTER_MAGIC_MAC):
- attr->val = *(__be32 *)&vif->addr[2];
- break;
- default:
- break;
- }
- attr->reserved1 = 0;
- out_filter->num_attrs++;
- }
-}
-
-static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_bcast_iter_data *data = _data;
- struct iwl_mvm *mvm = data->mvm;
- struct iwl_bcast_filter_cmd *cmd = data->cmd;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_fw_bcast_mac *bcast_mac;
- int i;
-
- if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
- return;
-
- bcast_mac = &cmd->macs[mvmvif->id];
-
- /*
- * enable filtering only for associated stations, but not for P2P
- * Clients
- */
- if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
- !vif->bss_conf.assoc)
- return;
-
- bcast_mac->default_discard = 1;
-
- /* copy all configured filters */
- for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
- /*
- * Make sure we don't exceed our filters limit.
- * if there is still a valid filter to be configured,
- * be on the safe side and just allow bcast for this mac.
- */
- if (WARN_ON_ONCE(data->current_filter >=
- ARRAY_SIZE(cmd->filters))) {
- bcast_mac->default_discard = 0;
- bcast_mac->attached_filters = 0;
- break;
- }
-
- iwl_mvm_set_bcast_filter(vif,
- &mvm->bcast_filters[i],
- &cmd->filters[data->current_filter]);
-
- /* skip current filter if it contains no attributes */
- if (!cmd->filters[data->current_filter].num_attrs)
- continue;
-
- /* attach the filter to current mac */
- bcast_mac->attached_filters |=
- cpu_to_le16(BIT(data->current_filter));
-
- data->current_filter++;
- }
-}
-
-bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
- struct iwl_bcast_filter_cmd *cmd)
-{
- struct iwl_bcast_iter_data iter_data = {
- .mvm = mvm,
- .cmd = cmd,
- };
-
- if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
- return false;
-
- memset(cmd, 0, sizeof(*cmd));
- cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
- cmd->max_macs = ARRAY_SIZE(cmd->macs);
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- /* use debugfs filters/macs if override is configured */
- if (mvm->dbgfs_bcast_filtering.override) {
- memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
- sizeof(cmd->filters));
- memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
- sizeof(cmd->macs));
- return true;
- }
-#endif
-
- /* if no filters are configured, do nothing */
- if (!mvm->bcast_filters)
- return false;
-
- /* configure and attach these filters for each associated sta vif */
- ieee80211_iterate_active_interfaces(
- mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
- iwl_mvm_bcast_filter_iterator, &iter_data);
-
- return true;
-}
-static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- struct iwl_bcast_filter_cmd cmd;
-
- if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
- return 0;
-
- if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
- return 0;
-
- return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
- sizeof(cmd), &cmd);
-}
-#else
-static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- return 0;
-}
-#endif
-
-static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *bss_conf,
- u32 changes)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- int ret;
-
- /*
- * Re-calculate the tsf id, as the master-slave relations depend on the
- * beacon interval, which was not known when the station interface was
- * added.
- */
- if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
- iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
-
- /*
- * If we're not associated yet, take the (new) BSSID before associating
- * so the firmware knows. If we're already associated, then use the old
- * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
- * branch for disassociation below.
- */
- if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
- memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
-
- ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
- if (ret)
- IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
-
- /* after sending it once, adopt mac80211 data */
- memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
- mvmvif->associated = bss_conf->assoc;
-
- if (changes & BSS_CHANGED_ASSOC) {
- if (bss_conf->assoc) {
- /* clear statistics to get clean beacon counter */
- iwl_mvm_request_statistics(mvm, true);
- memset(&mvmvif->beacon_stats, 0,
- sizeof(mvmvif->beacon_stats));
-
- /* add quota for this interface */
- ret = iwl_mvm_update_quotas(mvm, true, NULL);
- if (ret) {
- IWL_ERR(mvm, "failed to update quotas\n");
- return;
- }
-
- if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
- &mvm->status)) {
- /*
- * If we're restarting then the firmware will
- * obviously have lost synchronisation with
- * the AP. It will attempt to synchronise by
- * itself, but we can make it more reliable by
- * scheduling a session protection time event.
- *
- * The firmware needs to receive a beacon to
- * catch up with synchronisation, use 110% of
- * the beacon interval.
- *
- * Set a large maximum delay to allow for more
- * than a single interface.
- */
- u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
- iwl_mvm_protect_session(mvm, vif, dur, dur,
- 5 * dur, false);
- }
-
- iwl_mvm_sf_update(mvm, vif, false);
- iwl_mvm_power_vif_assoc(mvm, vif);
- if (vif->p2p) {
- iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
- iwl_mvm_update_smps(mvm, vif,
- IWL_MVM_SMPS_REQ_PROT,
- IEEE80211_SMPS_DYNAMIC);
- }
- } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
- /*
- * If update fails - SF might be running in associated
- * mode while disassociated - which is forbidden.
- */
- WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
- "Failed to update SF upon disassociation\n");
-
- /* remove AP station now that the MAC is unassoc */
- ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
- if (ret)
- IWL_ERR(mvm, "failed to remove AP station\n");
-
- if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
- mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
- mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
- /* remove quota for this interface */
- ret = iwl_mvm_update_quotas(mvm, false, NULL);
- if (ret)
- IWL_ERR(mvm, "failed to update quotas\n");
-
- if (vif->p2p)
- iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
-
- /* this will take the cleared BSSID from bss_conf */
- ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
- if (ret)
- IWL_ERR(mvm,
- "failed to update MAC %pM (clear after unassoc)\n",
- vif->addr);
- }
-
- iwl_mvm_recalc_multicast(mvm);
- iwl_mvm_configure_bcast_filter(mvm, vif);
-
- /* reset rssi values */
- mvmvif->bf_data.ave_beacon_signal = 0;
-
- iwl_mvm_bt_coex_vif_change(mvm);
- iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
- IEEE80211_SMPS_AUTOMATIC);
- } else if (changes & BSS_CHANGED_BEACON_INFO) {
- /*
- * We received a beacon _after_ association so
- * remove the session protection.
- */
- iwl_mvm_remove_time_event(mvm, mvmvif,
- &mvmvif->time_event_data);
- }
-
- if (changes & BSS_CHANGED_BEACON_INFO) {
- iwl_mvm_sf_update(mvm, vif, false);
- WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
- }
-
- if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
- ret = iwl_mvm_power_update_mac(mvm);
- if (ret)
- IWL_ERR(mvm, "failed to update power mode\n");
- }
-
- if (changes & BSS_CHANGED_TXPOWER) {
- IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
- bss_conf->txpower);
- iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
- }
-
- if (changes & BSS_CHANGED_CQM) {
- IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
- /* reset cqm events tracking */
- mvmvif->bf_data.last_cqm_event = 0;
- if (mvmvif->bf_data.bf_enabled) {
- ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
- if (ret)
- IWL_ERR(mvm,
- "failed to update CQM thresholds\n");
- }
- }
-
- if (changes & BSS_CHANGED_ARP_FILTER) {
- IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
- iwl_mvm_configure_bcast_filter(mvm, vif);
- }
-}
-
-static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- int ret;
-
- /*
- * iwl_mvm_mac_ctxt_add() might read directly from the device
- * (the system time), so make sure it is available.
- */
- ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
- if (ret)
- return ret;
-
- mutex_lock(&mvm->mutex);
-
- /* Send the beacon template */
- ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
- if (ret)
- goto out_unlock;
-
- /*
- * Re-calculate the tsf id, as the master-slave relations depend on the
- * beacon interval, which was not known when the AP interface was added.
- */
- if (vif->type == NL80211_IFTYPE_AP)
- iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
-
- mvmvif->ap_assoc_sta_count = 0;
-
- /* Add the mac context */
- ret = iwl_mvm_mac_ctxt_add(mvm, vif);
- if (ret)
- goto out_unlock;
-
- /* Perform the binding */
- ret = iwl_mvm_binding_add_vif(mvm, vif);
- if (ret)
- goto out_remove;
-
- /* Send the bcast station. At this stage the TBTT and DTIM time events
- * are added and applied to the scheduler */
- ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
- if (ret)
- goto out_unbind;
-
- /* must be set before quota calculations */
- mvmvif->ap_ibss_active = true;
-
- /* power updated needs to be done before quotas */
- iwl_mvm_power_update_mac(mvm);
-
- ret = iwl_mvm_update_quotas(mvm, false, NULL);
- if (ret)
- goto out_quota_failed;
-
- /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
- if (vif->p2p && mvm->p2p_device_vif)
- iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
-
- iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
-
- iwl_mvm_bt_coex_vif_change(mvm);
-
- /* we don't support TDLS during DCM */
- if (iwl_mvm_phy_ctx_count(mvm) > 1)
- iwl_mvm_teardown_tdls_peers(mvm);
-
- goto out_unlock;
-
-out_quota_failed:
- iwl_mvm_power_update_mac(mvm);
- mvmvif->ap_ibss_active = false;
- iwl_mvm_send_rm_bcast_sta(mvm, vif);
-out_unbind:
- iwl_mvm_binding_remove_vif(mvm, vif);
-out_remove:
- iwl_mvm_mac_ctxt_remove(mvm, vif);
-out_unlock:
- mutex_unlock(&mvm->mutex);
- iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
- return ret;
-}
-
-static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- iwl_mvm_prepare_mac_removal(mvm, vif);
-
- mutex_lock(&mvm->mutex);
-
- /* Handle AP stop while in CSA */
- if (rcu_access_pointer(mvm->csa_vif) == vif) {
- iwl_mvm_remove_time_event(mvm, mvmvif,
- &mvmvif->time_event_data);
- RCU_INIT_POINTER(mvm->csa_vif, NULL);
- mvmvif->csa_countdown = false;
- }
-
- if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
- RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
- mvm->csa_tx_block_bcn_timeout = 0;
- }
-
- mvmvif->ap_ibss_active = false;
- mvm->ap_last_beacon_gp2 = 0;
-
- iwl_mvm_bt_coex_vif_change(mvm);
-
- iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
-
- /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
- if (vif->p2p && mvm->p2p_device_vif)
- iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
-
- iwl_mvm_update_quotas(mvm, false, NULL);
- iwl_mvm_send_rm_bcast_sta(mvm, vif);
- iwl_mvm_binding_remove_vif(mvm, vif);
-
- iwl_mvm_power_update_mac(mvm);
-
- iwl_mvm_mac_ctxt_remove(mvm, vif);
-
- mutex_unlock(&mvm->mutex);
-}
-
-static void
-iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *bss_conf,
- u32 changes)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- /* Changes will be applied when the AP/IBSS is started */
- if (!mvmvif->ap_ibss_active)
- return;
-
- if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
- BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
- iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
- IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
-
- /* Need to send a new beacon template to the FW */
- if (changes & BSS_CHANGED_BEACON &&
- iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
- IWL_WARN(mvm, "Failed updating beacon data\n");
-
- if (changes & BSS_CHANGED_TXPOWER) {
- IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
- bss_conf->txpower);
- iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
- }
-
-}
-
-static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *bss_conf,
- u32 changes)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- /*
- * iwl_mvm_bss_info_changed_station() might call
- * iwl_mvm_protect_session(), which reads directly from
- * the device (the system time), so make sure it is available.
- */
- if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
- return;
-
- mutex_lock(&mvm->mutex);
-
- if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
- iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
-
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
- break;
- case NL80211_IFTYPE_AP:
- case NL80211_IFTYPE_ADHOC:
- iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
- break;
- default:
- /* shouldn't happen */
- WARN_ON_ONCE(1);
- }
-
- mutex_unlock(&mvm->mutex);
- iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
-}
-
-static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_scan_request *hw_req)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- if (hw_req->req.n_channels == 0 ||
- hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
- return -EINVAL;
-
- mutex_lock(&mvm->mutex);
- ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
- mutex_unlock(&mvm->mutex);
-
- return ret;
-}
-
-static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- mutex_lock(&mvm->mutex);
-
- /* Due to a race condition, it's possible that mac80211 asks
- * us to stop a hw_scan when it's already stopped. This can
- * happen, for instance, if we stopped the scan ourselves,
- * called ieee80211_scan_completed() and the userspace called
- * cancel scan scan before ieee80211_scan_work() could run.
- * To handle that, simply return if the scan is not running.
- */
- if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
- iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
-
- mutex_unlock(&mvm->mutex);
-}
-
-static void
-iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
- struct ieee80211_sta *sta, u16 tids,
- int num_frames,
- enum ieee80211_frame_release_type reason,
- bool more_data)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- /* Called when we need to transmit (a) frame(s) from mac80211 */
-
- iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
- tids, more_data, false);
-}
-
-static void
-iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
- struct ieee80211_sta *sta, u16 tids,
- int num_frames,
- enum ieee80211_frame_release_type reason,
- bool more_data)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- /* Called when we need to transmit (a) frame(s) from agg queue */
-
- iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
- tids, more_data, true);
-}
-
-static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- enum sta_notify_cmd cmd,
- struct ieee80211_sta *sta)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
- unsigned long txqs = 0, tids = 0;
- int tid;
-
- spin_lock_bh(&mvmsta->lock);
- for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
- struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
-
- if (tid_data->state != IWL_AGG_ON &&
- tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
- continue;
-
- __set_bit(tid_data->txq_id, &txqs);
-
- if (iwl_mvm_tid_queued(tid_data) == 0)
- continue;
-
- __set_bit(tid, &tids);
- }
-
- switch (cmd) {
- case STA_NOTIFY_SLEEP:
- if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
- ieee80211_sta_block_awake(hw, sta, true);
-
- for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
- ieee80211_sta_set_buffered(sta, tid, true);
-
- if (txqs)
- iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
- /*
- * The fw updates the STA to be asleep. Tx packets on the Tx
- * queues to this station will not be transmitted. The fw will
- * send a Tx response with TX_STATUS_FAIL_DEST_PS.
- */
- break;
- case STA_NOTIFY_AWAKE:
- if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
- break;
-
- if (txqs)
- iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
- iwl_mvm_sta_modify_ps_wake(mvm, sta);
- break;
- default:
- break;
- }
- spin_unlock_bh(&mvmsta->lock);
-}
-
-static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
-
- /*
- * This is called before mac80211 does RCU synchronisation,
- * so here we already invalidate our internal RCU-protected
- * station pointer. The rest of the code will thus no longer
- * be able to find the station this way, and we don't rely
- * on further RCU synchronisation after the sta_state()
- * callback deleted the station.
- */
- mutex_lock(&mvm->mutex);
- if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
- rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
- ERR_PTR(-ENOENT));
-
- if (mvm_sta->vif->type == NL80211_IFTYPE_AP) {
- mvmvif->ap_assoc_sta_count--;
- iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
- }
-
- mutex_unlock(&mvm->mutex);
-}
-
-static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- const u8 *bssid)
-{
- if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
- return;
-
- if (iwlwifi_mod_params.uapsd_disable) {
- vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
- return;
- }
-
- vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
-}
-
-static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- enum ieee80211_sta_state old_state,
- enum ieee80211_sta_state new_state)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- int ret;
-
- IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
- sta->addr, old_state, new_state);
-
- /* this would be a mac80211 bug ... but don't crash */
- if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
- return -EINVAL;
-
- /* if a STA is being removed, reuse its ID */
- flush_work(&mvm->sta_drained_wk);
-
- mutex_lock(&mvm->mutex);
- if (old_state == IEEE80211_STA_NOTEXIST &&
- new_state == IEEE80211_STA_NONE) {
- /*
- * Firmware bug - it'll crash if the beacon interval is less
- * than 16. We can't avoid connecting at all, so refuse the
- * station state change, this will cause mac80211 to abandon
- * attempts to connect to this AP, and eventually wpa_s will
- * blacklist the AP...
- */
- if (vif->type == NL80211_IFTYPE_STATION &&
- vif->bss_conf.beacon_int < 16) {
- IWL_ERR(mvm,
- "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
- sta->addr, vif->bss_conf.beacon_int);
- ret = -EINVAL;
- goto out_unlock;
- }
-
- if (sta->tdls &&
- (vif->p2p ||
- iwl_mvm_tdls_sta_count(mvm, NULL) ==
- IWL_MVM_TDLS_STA_COUNT ||
- iwl_mvm_phy_ctx_count(mvm) > 1)) {
- IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
- ret = -EBUSY;
- goto out_unlock;
- }
-
- ret = iwl_mvm_add_sta(mvm, vif, sta);
- if (sta->tdls && ret == 0)
- iwl_mvm_recalc_tdls_state(mvm, vif, true);
- } else if (old_state == IEEE80211_STA_NONE &&
- new_state == IEEE80211_STA_AUTH) {
- /*
- * EBS may be disabled due to previous failures reported by FW.
- * Reset EBS status here assuming environment has been changed.
- */
- mvm->last_ebs_successful = true;
- iwl_mvm_check_uapsd(mvm, vif, sta->addr);
- ret = 0;
- } else if (old_state == IEEE80211_STA_AUTH &&
- new_state == IEEE80211_STA_ASSOC) {
- ret = iwl_mvm_update_sta(mvm, vif, sta);
- if (ret == 0)
- iwl_mvm_rs_rate_init(mvm, sta,
- mvmvif->phy_ctxt->channel->band,
- true);
- } else if (old_state == IEEE80211_STA_ASSOC &&
- new_state == IEEE80211_STA_AUTHORIZED) {
-
- /* we don't support TDLS during DCM */
- if (iwl_mvm_phy_ctx_count(mvm) > 1)
- iwl_mvm_teardown_tdls_peers(mvm);
-
- /* enable beacon filtering */
- WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
- ret = 0;
- } else if (old_state == IEEE80211_STA_AUTHORIZED &&
- new_state == IEEE80211_STA_ASSOC) {
- /* disable beacon filtering */
- WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
- ret = 0;
- } else if (old_state == IEEE80211_STA_ASSOC &&
- new_state == IEEE80211_STA_AUTH) {
- ret = 0;
- } else if (old_state == IEEE80211_STA_AUTH &&
- new_state == IEEE80211_STA_NONE) {
- ret = 0;
- } else if (old_state == IEEE80211_STA_NONE &&
- new_state == IEEE80211_STA_NOTEXIST) {
- ret = iwl_mvm_rm_sta(mvm, vif, sta);
- if (sta->tdls)
- iwl_mvm_recalc_tdls_state(mvm, vif, false);
- } else {
- ret = -EIO;
- }
- out_unlock:
- mutex_unlock(&mvm->mutex);
-
- if (sta->tdls && ret == 0) {
- if (old_state == IEEE80211_STA_NOTEXIST &&
- new_state == IEEE80211_STA_NONE)
- ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
- else if (old_state == IEEE80211_STA_NONE &&
- new_state == IEEE80211_STA_NOTEXIST)
- ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
- }
-
- return ret;
-}
-
-static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- mvm->rts_threshold = value;
-
- return 0;
-}
-
-static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta, u32 changed)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- if (vif->type == NL80211_IFTYPE_STATION &&
- changed & IEEE80211_RC_NSS_CHANGED)
- iwl_mvm_sf_update(mvm, vif, false);
-}
-
-static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u16 ac,
- const struct ieee80211_tx_queue_params *params)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- mvmvif->queue_params[ac] = *params;
-
- /*
- * No need to update right away, we'll get BSS_CHANGED_QOS
- * The exception is P2P_DEVICE interface which needs immediate update.
- */
- if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
- int ret;
-
- mutex_lock(&mvm->mutex);
- ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
- mutex_unlock(&mvm->mutex);
- return ret;
- }
- return 0;
-}
-
-static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
- 200 + vif->bss_conf.beacon_int);
- u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
- 100 + vif->bss_conf.beacon_int);
-
- if (WARN_ON_ONCE(vif->bss_conf.assoc))
- return;
-
- /*
- * iwl_mvm_protect_session() reads directly from the device
- * (the system time), so make sure it is available.
- */
- if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
- return;
-
- mutex_lock(&mvm->mutex);
- /* Try really hard to protect the session and hear a beacon */
- iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
- mutex_unlock(&mvm->mutex);
-
- iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
-}
-
-static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct cfg80211_sched_scan_request *req,
- struct ieee80211_scan_ies *ies)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- int ret;
-
- mutex_lock(&mvm->mutex);
-
- if (!vif->bss_conf.idle) {
- ret = -EBUSY;
- goto out;
- }
-
- ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
-
-out:
- mutex_unlock(&mvm->mutex);
- return ret;
-}
-
-static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- mutex_lock(&mvm->mutex);
-
- /* Due to a race condition, it's possible that mac80211 asks
- * us to stop a sched_scan when it's already stopped. This
- * can happen, for instance, if we stopped the scan ourselves,
- * called ieee80211_sched_scan_stopped() and the userspace called
- * stop sched scan scan before ieee80211_sched_scan_stopped_work()
- * could run. To handle this, simply return if the scan is
- * not running.
- */
- if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
- mutex_unlock(&mvm->mutex);
- return 0;
- }
-
- ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
- mutex_unlock(&mvm->mutex);
- iwl_mvm_wait_for_async_handlers(mvm);
-
- return ret;
-}
-
-static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
- enum set_key_cmd cmd,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- struct ieee80211_key_conf *key)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- if (iwlwifi_mod_params.sw_crypto) {
- IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
- return -EOPNOTSUPP;
- }
-
- switch (key->cipher) {
- case WLAN_CIPHER_SUITE_TKIP:
- key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
- key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
- break;
- case WLAN_CIPHER_SUITE_AES_CMAC:
- WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
- break;
- case WLAN_CIPHER_SUITE_WEP40:
- case WLAN_CIPHER_SUITE_WEP104:
- /* For non-client mode, only use WEP keys for TX as we probably
- * don't have a station yet anyway and would then have to keep
- * track of the keys, linking them to each of the clients/peers
- * as they appear. For now, don't do that, for performance WEP
- * offload doesn't really matter much, but we need it for some
- * other offload features in client mode.
- */
- if (vif->type != NL80211_IFTYPE_STATION)
- return 0;
- break;
- default:
- /* currently FW supports only one optional cipher scheme */
- if (hw->n_cipher_schemes &&
- hw->cipher_schemes->cipher == key->cipher)
- key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
- else
- return -EOPNOTSUPP;
- }
-
- mutex_lock(&mvm->mutex);
-
- switch (cmd) {
- case SET_KEY:
- if ((vif->type == NL80211_IFTYPE_ADHOC ||
- vif->type == NL80211_IFTYPE_AP) && !sta) {
- /*
- * GTK on AP interface is a TX-only key, return 0;
- * on IBSS they're per-station and because we're lazy
- * we don't support them for RX, so do the same.
- */
- ret = 0;
- key->hw_key_idx = STA_KEY_IDX_INVALID;
- break;
- }
-
- /* During FW restart, in order to restore the state as it was,
- * don't try to reprogram keys we previously failed for.
- */
- if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
- key->hw_key_idx == STA_KEY_IDX_INVALID) {
- IWL_DEBUG_MAC80211(mvm,
- "skip invalid idx key programming during restart\n");
- ret = 0;
- break;
- }
-
- IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
- ret = iwl_mvm_set_sta_key(mvm, vif, sta, key,
- test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
- &mvm->status));
- if (ret) {
- IWL_WARN(mvm, "set key failed\n");
- /*
- * can't add key for RX, but we don't need it
- * in the device for TX so still return 0
- */
- key->hw_key_idx = STA_KEY_IDX_INVALID;
- ret = 0;
- }
-
- break;
- case DISABLE_KEY:
- if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
- ret = 0;
- break;
- }
-
- IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
- ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
- break;
- default:
- ret = -EINVAL;
- }
-
- mutex_unlock(&mvm->mutex);
- return ret;
-}
-
-static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_key_conf *keyconf,
- struct ieee80211_sta *sta,
- u32 iv32, u16 *phase1key)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
- return;
-
- iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
-}
-
-
-static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
- struct iwl_rx_packet *pkt, void *data)
-{
- struct iwl_mvm *mvm =
- container_of(notif_wait, struct iwl_mvm, notif_wait);
- struct iwl_hs20_roc_res *resp;
- int resp_len = iwl_rx_packet_payload_len(pkt);
- struct iwl_mvm_time_event_data *te_data = data;
-
- if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
- return true;
-
- if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
- IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
- return true;
- }
-
- resp = (void *)pkt->data;
-
- IWL_DEBUG_TE(mvm,
- "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
- resp->status, resp->event_unique_id);
-
- te_data->uid = le32_to_cpu(resp->event_unique_id);
- IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
- te_data->uid);
-
- spin_lock_bh(&mvm->time_event_lock);
- list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
- spin_unlock_bh(&mvm->time_event_lock);
-
- return true;
-}
-
-#define AUX_ROC_MAX_DELAY_ON_CHANNEL 200
-static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
- struct ieee80211_channel *channel,
- struct ieee80211_vif *vif,
- int duration)
-{
- int res, time_reg = DEVICE_SYSTEM_TIME_REG;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
- static const u16 time_event_response[] = { HOT_SPOT_CMD };
- struct iwl_notification_wait wait_time_event;
- struct iwl_hs20_roc_req aux_roc_req = {
- .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
- .id_and_color =
- cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
- .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
- /* Set the channel info data */
- .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
- PHY_BAND_24 : PHY_BAND_5,
- .channel_info.channel = channel->hw_value,
- .channel_info.width = PHY_VHT_CHANNEL_MODE20,
- /* Set the time and duration */
- .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
- .apply_time_max_delay =
- cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
- .duration = cpu_to_le32(MSEC_TO_TU(duration)),
- };
-
- /* Set the node address */
- memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
-
- lockdep_assert_held(&mvm->mutex);
-
- spin_lock_bh(&mvm->time_event_lock);
-
- if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
- spin_unlock_bh(&mvm->time_event_lock);
- return -EIO;
- }
-
- te_data->vif = vif;
- te_data->duration = duration;
- te_data->id = HOT_SPOT_CMD;
-
- spin_unlock_bh(&mvm->time_event_lock);
-
- /*
- * Use a notification wait, which really just processes the
- * command response and doesn't wait for anything, in order
- * to be able to process the response and get the UID inside
- * the RX path. Using CMD_WANT_SKB doesn't work because it
- * stores the buffer and then wakes up this thread, by which
- * time another notification (that the time event started)
- * might already be processed unsuccessfully.
- */
- iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
- time_event_response,
- ARRAY_SIZE(time_event_response),
- iwl_mvm_rx_aux_roc, te_data);
-
- res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
- &aux_roc_req);
-
- if (res) {
- IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
- iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
- goto out_clear_te;
- }
-
- /* No need to wait for anything, so just pass 1 (0 isn't valid) */
- res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
- /* should never fail */
- WARN_ON_ONCE(res);
-
- if (res) {
- out_clear_te:
- spin_lock_bh(&mvm->time_event_lock);
- iwl_mvm_te_clear_data(mvm, te_data);
- spin_unlock_bh(&mvm->time_event_lock);
- }
-
- return res;
-}
-
-static int iwl_mvm_roc(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_channel *channel,
- int duration,
- enum ieee80211_roc_type type)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct cfg80211_chan_def chandef;
- struct iwl_mvm_phy_ctxt *phy_ctxt;
- int ret, i;
-
- IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
- duration, type);
-
- flush_work(&mvm->roc_done_wk);
-
- mutex_lock(&mvm->mutex);
-
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
- /* Use aux roc framework (HS20) */
- ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
- vif, duration);
- goto out_unlock;
- }
- IWL_ERR(mvm, "hotspot not supported\n");
- ret = -EINVAL;
- goto out_unlock;
- case NL80211_IFTYPE_P2P_DEVICE:
- /* handle below */
- break;
- default:
- IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
- ret = -EINVAL;
- goto out_unlock;
- }
-
- for (i = 0; i < NUM_PHY_CTX; i++) {
- phy_ctxt = &mvm->phy_ctxts[i];
- if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
- continue;
-
- if (phy_ctxt->ref && channel == phy_ctxt->channel) {
- /*
- * Unbind the P2P_DEVICE from the current PHY context,
- * and if the PHY context is not used remove it.
- */
- ret = iwl_mvm_binding_remove_vif(mvm, vif);
- if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
- goto out_unlock;
-
- iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
-
- /* Bind the P2P_DEVICE to the current PHY Context */
- mvmvif->phy_ctxt = phy_ctxt;
-
- ret = iwl_mvm_binding_add_vif(mvm, vif);
- if (WARN(ret, "Failed binding P2P_DEVICE\n"))
- goto out_unlock;
-
- iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
- goto schedule_time_event;
- }
- }
-
- /* Need to update the PHY context only if the ROC channel changed */
- if (channel == mvmvif->phy_ctxt->channel)
- goto schedule_time_event;
-
- cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
-
- /*
- * Change the PHY context configuration as it is currently referenced
- * only by the P2P Device MAC
- */
- if (mvmvif->phy_ctxt->ref == 1) {
- ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
- &chandef, 1, 1);
- if (ret)
- goto out_unlock;
- } else {
- /*
- * The PHY context is shared with other MACs. Need to remove the
- * P2P Device from the binding, allocate an new PHY context and
- * create a new binding
- */
- phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
- if (!phy_ctxt) {
- ret = -ENOSPC;
- goto out_unlock;
- }
-
- ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
- 1, 1);
- if (ret) {
- IWL_ERR(mvm, "Failed to change PHY context\n");
- goto out_unlock;
- }
-
- /* Unbind the P2P_DEVICE from the current PHY context */
- ret = iwl_mvm_binding_remove_vif(mvm, vif);
- if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
- goto out_unlock;
-
- iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
-
- /* Bind the P2P_DEVICE to the new allocated PHY context */
- mvmvif->phy_ctxt = phy_ctxt;
-
- ret = iwl_mvm_binding_add_vif(mvm, vif);
- if (WARN(ret, "Failed binding P2P_DEVICE\n"))
- goto out_unlock;
-
- iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
- }
-
-schedule_time_event:
- /* Schedule the time events */
- ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
-
-out_unlock:
- mutex_unlock(&mvm->mutex);
- IWL_DEBUG_MAC80211(mvm, "leave\n");
- return ret;
-}
-
-static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- IWL_DEBUG_MAC80211(mvm, "enter\n");
-
- mutex_lock(&mvm->mutex);
- iwl_mvm_stop_roc(mvm);
- mutex_unlock(&mvm->mutex);
-
- IWL_DEBUG_MAC80211(mvm, "leave\n");
- return 0;
-}
-
-static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
- struct ieee80211_chanctx_conf *ctx)
-{
- u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
- struct iwl_mvm_phy_ctxt *phy_ctxt;
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
-
- phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
- if (!phy_ctxt) {
- ret = -ENOSPC;
- goto out;
- }
-
- ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
- ctx->rx_chains_static,
- ctx->rx_chains_dynamic);
- if (ret) {
- IWL_ERR(mvm, "Failed to add PHY context\n");
- goto out;
- }
-
- iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
- *phy_ctxt_id = phy_ctxt->id;
-out:
- return ret;
-}
-
-static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
- struct ieee80211_chanctx_conf *ctx)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- mutex_lock(&mvm->mutex);
- ret = __iwl_mvm_add_chanctx(mvm, ctx);
- mutex_unlock(&mvm->mutex);
-
- return ret;
-}
-
-static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
- struct ieee80211_chanctx_conf *ctx)
-{
- u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
- struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
-
- lockdep_assert_held(&mvm->mutex);
-
- iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
-}
-
-static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
- struct ieee80211_chanctx_conf *ctx)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- mutex_lock(&mvm->mutex);
- __iwl_mvm_remove_chanctx(mvm, ctx);
- mutex_unlock(&mvm->mutex);
-}
-
-static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
- struct ieee80211_chanctx_conf *ctx,
- u32 changed)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
- struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
-
- if (WARN_ONCE((phy_ctxt->ref > 1) &&
- (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
- IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
- IEEE80211_CHANCTX_CHANGE_RADAR |
- IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
- "Cannot change PHY. Ref=%d, changed=0x%X\n",
- phy_ctxt->ref, changed))
- return;
-
- mutex_lock(&mvm->mutex);
- iwl_mvm_bt_coex_vif_change(mvm);
- iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
- ctx->rx_chains_static,
- ctx->rx_chains_dynamic);
- mutex_unlock(&mvm->mutex);
-}
-
-static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct ieee80211_chanctx_conf *ctx,
- bool switching_chanctx)
-{
- u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
- struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- int ret;
-
- lockdep_assert_held(&mvm->mutex);
-
- mvmvif->phy_ctxt = phy_ctxt;
-
- switch (vif->type) {
- case NL80211_IFTYPE_AP:
- /* only needed if we're switching chanctx (i.e. during CSA) */
- if (switching_chanctx) {
- mvmvif->ap_ibss_active = true;
- break;
- }
- case NL80211_IFTYPE_ADHOC:
- /*
- * The AP binding flow is handled as part of the start_ap flow
- * (in bss_info_changed), similarly for IBSS.
- */
- ret = 0;
- goto out;
- case NL80211_IFTYPE_STATION:
- break;
- case NL80211_IFTYPE_MONITOR:
- /* always disable PS when a monitor interface is active */
- mvmvif->ps_disabled = true;
- break;
- default:
- ret = -EINVAL;
- goto out;
- }
-
- ret = iwl_mvm_binding_add_vif(mvm, vif);
- if (ret)
- goto out;
-
- /*
- * Power state must be updated before quotas,
- * otherwise fw will complain.
- */
- iwl_mvm_power_update_mac(mvm);
-
- /* Setting the quota at this stage is only required for monitor
- * interfaces. For the other types, the bss_info changed flow
- * will handle quota settings.
- */
- if (vif->type == NL80211_IFTYPE_MONITOR) {
- mvmvif->monitor_active = true;
- ret = iwl_mvm_update_quotas(mvm, false, NULL);
- if (ret)
- goto out_remove_binding;
- }
-
- /* Handle binding during CSA */
- if (vif->type == NL80211_IFTYPE_AP) {
- iwl_mvm_update_quotas(mvm, false, NULL);
- iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
- }
-
- if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
- u32 duration = 2 * vif->bss_conf.beacon_int;
-
- /* iwl_mvm_protect_session() reads directly from the
- * device (the system time), so make sure it is
- * available.
- */
- ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
- if (ret)
- goto out_remove_binding;
-
- /* Protect the session to make sure we hear the first
- * beacon on the new channel.
- */
- iwl_mvm_protect_session(mvm, vif, duration, duration,
- vif->bss_conf.beacon_int / 2,
- true);
-
- iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
-
- iwl_mvm_update_quotas(mvm, false, NULL);
- }
-
- goto out;
-
-out_remove_binding:
- iwl_mvm_binding_remove_vif(mvm, vif);
- iwl_mvm_power_update_mac(mvm);
-out:
- if (ret)
- mvmvif->phy_ctxt = NULL;
- return ret;
-}
-static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_chanctx_conf *ctx)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- mutex_lock(&mvm->mutex);
- ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
- mutex_unlock(&mvm->mutex);
-
- return ret;
-}
-
-static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct ieee80211_chanctx_conf *ctx,
- bool switching_chanctx)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct ieee80211_vif *disabled_vif = NULL;
-
- lockdep_assert_held(&mvm->mutex);
-
- iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
-
- switch (vif->type) {
- case NL80211_IFTYPE_ADHOC:
- goto out;
- case NL80211_IFTYPE_MONITOR:
- mvmvif->monitor_active = false;
- mvmvif->ps_disabled = false;
- break;
- case NL80211_IFTYPE_AP:
- /* This part is triggered only during CSA */
- if (!switching_chanctx || !mvmvif->ap_ibss_active)
- goto out;
-
- mvmvif->csa_countdown = false;
-
- /* Set CS bit on all the stations */
- iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
-
- /* Save blocked iface, the timeout is set on the next beacon */
- rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
-
- mvmvif->ap_ibss_active = false;
- break;
- case NL80211_IFTYPE_STATION:
- if (!switching_chanctx)
- break;
-
- disabled_vif = vif;
-
- iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
- break;
- default:
- break;
- }
-
- iwl_mvm_update_quotas(mvm, false, disabled_vif);
- iwl_mvm_binding_remove_vif(mvm, vif);
-
-out:
- mvmvif->phy_ctxt = NULL;
- iwl_mvm_power_update_mac(mvm);
-}
-
-static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_chanctx_conf *ctx)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- mutex_lock(&mvm->mutex);
- __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
- mutex_unlock(&mvm->mutex);
-}
-
-static int
-iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
- struct ieee80211_vif_chanctx_switch *vifs)
-{
- int ret;
-
- mutex_lock(&mvm->mutex);
- __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
- __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
-
- ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
- if (ret) {
- IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
- goto out_reassign;
- }
-
- ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
- true);
- if (ret) {
- IWL_ERR(mvm,
- "failed to assign new_ctx during channel switch\n");
- goto out_remove;
- }
-
- /* we don't support TDLS during DCM - can be caused by channel switch */
- if (iwl_mvm_phy_ctx_count(mvm) > 1)
- iwl_mvm_teardown_tdls_peers(mvm);
-
- goto out;
-
-out_remove:
- __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
-
-out_reassign:
- if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
- IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
- goto out_restart;
- }
-
- if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
- true)) {
- IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
- goto out_restart;
- }
-
- goto out;
-
-out_restart:
- /* things keep failing, better restart the hw */
- iwl_mvm_nic_restart(mvm, false);
-
-out:
- mutex_unlock(&mvm->mutex);
-
- return ret;
-}
-
-static int
-iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
- struct ieee80211_vif_chanctx_switch *vifs)
-{
- int ret;
-
- mutex_lock(&mvm->mutex);
- __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
-
- ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
- true);
- if (ret) {
- IWL_ERR(mvm,
- "failed to assign new_ctx during channel switch\n");
- goto out_reassign;
- }
-
- goto out;
-
-out_reassign:
- if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
- true)) {
- IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
- goto out_restart;
- }
-
- goto out;
-
-out_restart:
- /* things keep failing, better restart the hw */
- iwl_mvm_nic_restart(mvm, false);
-
-out:
- mutex_unlock(&mvm->mutex);
-
- return ret;
-}
-
-static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
- struct ieee80211_vif_chanctx_switch *vifs,
- int n_vifs,
- enum ieee80211_chanctx_switch_mode mode)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- /* we only support a single-vif right now */
- if (n_vifs > 1)
- return -EOPNOTSUPP;
-
- switch (mode) {
- case CHANCTX_SWMODE_SWAP_CONTEXTS:
- ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
- break;
- case CHANCTX_SWMODE_REASSIGN_VIF:
- ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
- break;
- default:
- ret = -EOPNOTSUPP;
- break;
- }
-
- return ret;
-}
-
-static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
- struct ieee80211_sta *sta,
- bool set)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
-
- if (!mvm_sta || !mvm_sta->vif) {
- IWL_ERR(mvm, "Station is not associated to a vif\n");
- return -EINVAL;
- }
-
- return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
-}
-
-#ifdef CONFIG_NL80211_TESTMODE
-static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
- [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
- [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
- [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
-};
-
-static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- void *data, int len)
-{
- struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
- int err;
- u32 noa_duration;
-
- err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
- if (err)
- return err;
-
- if (!tb[IWL_MVM_TM_ATTR_CMD])
- return -EINVAL;
-
- switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
- case IWL_MVM_TM_CMD_SET_NOA:
- if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
- !vif->bss_conf.enable_beacon ||
- !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
- return -EINVAL;
-
- noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
- if (noa_duration >= vif->bss_conf.beacon_int)
- return -EINVAL;
-
- mvm->noa_duration = noa_duration;
- mvm->noa_vif = vif;
-
- return iwl_mvm_update_quotas(mvm, false, NULL);
- case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
- /* must be associated client vif - ignore authorized */
- if (!vif || vif->type != NL80211_IFTYPE_STATION ||
- !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
- !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
- return -EINVAL;
-
- if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
- return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
- return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
- }
-
- return -EOPNOTSUPP;
-}
-
-static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- void *data, int len)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int err;
-
- mutex_lock(&mvm->mutex);
- err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
- mutex_unlock(&mvm->mutex);
-
- return err;
-}
-#endif
-
-static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_channel_switch *chsw)
-{
- /* By implementing this operation, we prevent mac80211 from
- * starting its own channel switch timer, so that we can call
- * ieee80211_chswitch_done() ourselves at the right time
- * (which is when the absence time event starts).
- */
-
- IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
- "dummy channel switch op\n");
-}
-
-static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_channel_switch *chsw)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct ieee80211_vif *csa_vif;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- u32 apply_time;
- int ret;
-
- mutex_lock(&mvm->mutex);
-
- mvmvif->csa_failed = false;
-
- IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
- chsw->chandef.center_freq1);
-
- iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
-
- switch (vif->type) {
- case NL80211_IFTYPE_AP:
- csa_vif =
- rcu_dereference_protected(mvm->csa_vif,
- lockdep_is_held(&mvm->mutex));
- if (WARN_ONCE(csa_vif && csa_vif->csa_active,
- "Another CSA is already in progress")) {
- ret = -EBUSY;
- goto out_unlock;
- }
-
- rcu_assign_pointer(mvm->csa_vif, vif);
-
- if (WARN_ONCE(mvmvif->csa_countdown,
- "Previous CSA countdown didn't complete")) {
- ret = -EBUSY;
- goto out_unlock;
- }
-
- break;
- case NL80211_IFTYPE_STATION:
- /* Schedule the time event to a bit before beacon 1,
- * to make sure we're in the new channel when the
- * GO/AP arrives.
- */
- apply_time = chsw->device_timestamp +
- ((vif->bss_conf.beacon_int * (chsw->count - 1) -
- IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
-
- if (chsw->block_tx)
- iwl_mvm_csa_client_absent(mvm, vif);
-
- iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
- apply_time);
- if (mvmvif->bf_data.bf_enabled) {
- ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
- if (ret)
- goto out_unlock;
- }
-
- break;
- default:
- break;
- }
-
- mvmvif->ps_disabled = true;
-
- ret = iwl_mvm_power_update_ps(mvm);
- if (ret)
- goto out_unlock;
-
- /* we won't be on this channel any longer */
- iwl_mvm_teardown_tdls_peers(mvm);
-
-out_unlock:
- mutex_unlock(&mvm->mutex);
-
- return ret;
-}
-
-static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- mutex_lock(&mvm->mutex);
-
- if (mvmvif->csa_failed) {
- mvmvif->csa_failed = false;
- ret = -EIO;
- goto out_unlock;
- }
-
- if (vif->type == NL80211_IFTYPE_STATION) {
- struct iwl_mvm_sta *mvmsta;
-
- mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
- mvmvif->ap_sta_id);
-
- if (WARN_ON(!mvmsta)) {
- ret = -EIO;
- goto out_unlock;
- }
-
- iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
-
- iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
-
- ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
- if (ret)
- goto out_unlock;
-
- iwl_mvm_stop_session_protection(mvm, vif);
- }
-
- mvmvif->ps_disabled = false;
-
- ret = iwl_mvm_power_update_ps(mvm);
-
-out_unlock:
- mutex_unlock(&mvm->mutex);
-
- return ret;
-}
-
-static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u32 queues, bool drop)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif;
- struct iwl_mvm_sta *mvmsta;
- struct ieee80211_sta *sta;
- int i;
- u32 msk = 0;
-
- if (!vif || vif->type != NL80211_IFTYPE_STATION)
- return;
-
- mutex_lock(&mvm->mutex);
- mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- /* flush the AP-station and all TDLS peers */
- for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
- sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
- lockdep_is_held(&mvm->mutex));
- if (IS_ERR_OR_NULL(sta))
- continue;
-
- mvmsta = iwl_mvm_sta_from_mac80211(sta);
- if (mvmsta->vif != vif)
- continue;
-
- /* make sure only TDLS peers or the AP are flushed */
- WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
-
- msk |= mvmsta->tfd_queue_msk;
- }
-
- if (drop) {
- if (iwl_mvm_flush_tx_path(mvm, msk, 0))
- IWL_ERR(mvm, "flush request fail\n");
- mutex_unlock(&mvm->mutex);
- } else {
- mutex_unlock(&mvm->mutex);
-
- /* this can take a while, and we may need/want other operations
- * to succeed while doing this, so do it without the mutex held
- */
- iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
- }
-}
-
-static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
- struct survey_info *survey)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- memset(survey, 0, sizeof(*survey));
-
- /* only support global statistics right now */
- if (idx != 0)
- return -ENOENT;
-
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
- return -ENOENT;
-
- mutex_lock(&mvm->mutex);
-
- if (mvm->ucode_loaded) {
- ret = iwl_mvm_request_statistics(mvm, false);
- if (ret)
- goto out;
- }
-
- survey->filled = SURVEY_INFO_TIME |
- SURVEY_INFO_TIME_RX |
- SURVEY_INFO_TIME_TX |
- SURVEY_INFO_TIME_SCAN;
- survey->time = mvm->accu_radio_stats.on_time_rf +
- mvm->radio_stats.on_time_rf;
- do_div(survey->time, USEC_PER_MSEC);
-
- survey->time_rx = mvm->accu_radio_stats.rx_time +
- mvm->radio_stats.rx_time;
- do_div(survey->time_rx, USEC_PER_MSEC);
-
- survey->time_tx = mvm->accu_radio_stats.tx_time +
- mvm->radio_stats.tx_time;
- do_div(survey->time_tx, USEC_PER_MSEC);
-
- survey->time_scan = mvm->accu_radio_stats.on_time_scan +
- mvm->radio_stats.on_time_scan;
- do_div(survey->time_scan, USEC_PER_MSEC);
-
- ret = 0;
- out:
- mutex_unlock(&mvm->mutex);
- return ret;
-}
-
-static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- struct station_info *sinfo)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
-
- if (fw_has_capa(&mvm->fw->ucode_capa,
- IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
- return;
-
- /* if beacon filtering isn't on mac80211 does it anyway */
- if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
- return;
-
- if (!vif->bss_conf.assoc)
- return;
-
- mutex_lock(&mvm->mutex);
-
- if (mvmvif->ap_sta_id != mvmsta->sta_id)
- goto unlock;
-
- if (iwl_mvm_request_statistics(mvm, false))
- goto unlock;
-
- sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
- mvmvif->beacon_stats.accu_num_beacons;
- sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
- if (mvmvif->beacon_stats.avg_signal) {
- /* firmware only reports a value after RXing a few beacons */
- sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
- sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
- }
- unlock:
- mutex_unlock(&mvm->mutex);
-}
-
-static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- const struct ieee80211_event *event)
-{
-#define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \
- do { \
- if ((_cnt) && --(_cnt)) \
- break; \
- iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
- } while (0)
-
- struct iwl_fw_dbg_trigger_tlv *trig;
- struct iwl_fw_dbg_trigger_mlme *trig_mlme;
-
- if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
- return;
-
- trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
- trig_mlme = (void *)trig->data;
- if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
- return;
-
- if (event->u.mlme.data == ASSOC_EVENT) {
- if (event->u.mlme.status == MLME_DENIED)
- CHECK_MLME_TRIGGER(mvm, trig, buf,
- trig_mlme->stop_assoc_denied,
- "DENIED ASSOC: reason %d",
- event->u.mlme.reason);
- else if (event->u.mlme.status == MLME_TIMEOUT)
- CHECK_MLME_TRIGGER(mvm, trig, buf,
- trig_mlme->stop_assoc_timeout,
- "ASSOC TIMEOUT");
- } else if (event->u.mlme.data == AUTH_EVENT) {
- if (event->u.mlme.status == MLME_DENIED)
- CHECK_MLME_TRIGGER(mvm, trig, buf,
- trig_mlme->stop_auth_denied,
- "DENIED AUTH: reason %d",
- event->u.mlme.reason);
- else if (event->u.mlme.status == MLME_TIMEOUT)
- CHECK_MLME_TRIGGER(mvm, trig, buf,
- trig_mlme->stop_auth_timeout,
- "AUTH TIMEOUT");
- } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
- CHECK_MLME_TRIGGER(mvm, trig, buf,
- trig_mlme->stop_rx_deauth,
- "DEAUTH RX %d", event->u.mlme.reason);
- } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
- CHECK_MLME_TRIGGER(mvm, trig, buf,
- trig_mlme->stop_tx_deauth,
- "DEAUTH TX %d", event->u.mlme.reason);
- }
-#undef CHECK_MLME_TRIGGER
-}
-
-static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- const struct ieee80211_event *event)
-{
- struct iwl_fw_dbg_trigger_tlv *trig;
- struct iwl_fw_dbg_trigger_ba *ba_trig;
-
- if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
- return;
-
- trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
- ba_trig = (void *)trig->data;
- if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
- return;
-
- if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
- return;
-
- iwl_mvm_fw_dbg_collect_trig(mvm, trig,
- "BAR received from %pM, tid %d, ssn %d",
- event->u.ba.sta->addr, event->u.ba.tid,
- event->u.ba.ssn);
-}
-
-static void
-iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- const struct ieee80211_event *event)
-{
- struct iwl_fw_dbg_trigger_tlv *trig;
- struct iwl_fw_dbg_trigger_ba *ba_trig;
-
- if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
- return;
-
- trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
- ba_trig = (void *)trig->data;
- if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
- return;
-
- if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
- return;
-
- iwl_mvm_fw_dbg_collect_trig(mvm, trig,
- "Frame from %pM timed out, tid %d",
- event->u.ba.sta->addr, event->u.ba.tid);
-}
-
-static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- const struct ieee80211_event *event)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- switch (event->type) {
- case MLME_EVENT:
- iwl_mvm_event_mlme_callback(mvm, vif, event);
- break;
- case BAR_RX_EVENT:
- iwl_mvm_event_bar_rx_callback(mvm, vif, event);
- break;
- case BA_FRAME_TIMEOUT:
- iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
- break;
- default:
- break;
- }
-}
-
-const struct ieee80211_ops iwl_mvm_hw_ops = {
- .tx = iwl_mvm_mac_tx,
- .ampdu_action = iwl_mvm_mac_ampdu_action,
- .start = iwl_mvm_mac_start,
- .reconfig_complete = iwl_mvm_mac_reconfig_complete,
- .stop = iwl_mvm_mac_stop,
- .add_interface = iwl_mvm_mac_add_interface,
- .remove_interface = iwl_mvm_mac_remove_interface,
- .config = iwl_mvm_mac_config,
- .prepare_multicast = iwl_mvm_prepare_multicast,
- .configure_filter = iwl_mvm_configure_filter,
- .config_iface_filter = iwl_mvm_config_iface_filter,
- .bss_info_changed = iwl_mvm_bss_info_changed,
- .hw_scan = iwl_mvm_mac_hw_scan,
- .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
- .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
- .sta_state = iwl_mvm_mac_sta_state,
- .sta_notify = iwl_mvm_mac_sta_notify,
- .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
- .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
- .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
- .sta_rc_update = iwl_mvm_sta_rc_update,
- .conf_tx = iwl_mvm_mac_conf_tx,
- .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
- .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
- .flush = iwl_mvm_mac_flush,
- .sched_scan_start = iwl_mvm_mac_sched_scan_start,
- .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
- .set_key = iwl_mvm_mac_set_key,
- .update_tkip_key = iwl_mvm_mac_update_tkip_key,
- .remain_on_channel = iwl_mvm_roc,
- .cancel_remain_on_channel = iwl_mvm_cancel_roc,
- .add_chanctx = iwl_mvm_add_chanctx,
- .remove_chanctx = iwl_mvm_remove_chanctx,
- .change_chanctx = iwl_mvm_change_chanctx,
- .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
- .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
- .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
-
- .start_ap = iwl_mvm_start_ap_ibss,
- .stop_ap = iwl_mvm_stop_ap_ibss,
- .join_ibss = iwl_mvm_start_ap_ibss,
- .leave_ibss = iwl_mvm_stop_ap_ibss,
-
- .set_tim = iwl_mvm_set_tim,
-
- .channel_switch = iwl_mvm_channel_switch,
- .pre_channel_switch = iwl_mvm_pre_channel_switch,
- .post_channel_switch = iwl_mvm_post_channel_switch,
-
- .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
- .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
- .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
-
- .event_callback = iwl_mvm_mac_event_callback,
-
- CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
-
-#ifdef CONFIG_PM_SLEEP
- /* look at d3.c */
- .suspend = iwl_mvm_suspend,
- .resume = iwl_mvm_resume,
- .set_wakeup = iwl_mvm_set_wakeup,
- .set_rekey_data = iwl_mvm_set_rekey_data,
-#if IS_ENABLED(CONFIG_IPV6)
- .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
-#endif
- .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
-#endif
- .get_survey = iwl_mvm_mac_get_survey,
- .sta_statistics = iwl_mvm_mac_sta_statistics,
-};
projects / cascardo / linux.git / blobdiff