| /****************************************************************************** |
| * |
| * 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. |
| * |
| * 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. |
| * 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 <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 "fw-api-scan.h" |
| #include "iwl-phy-db.h" |
| #include "testmode.h" |
| #include "iwl-fw-error-dump.h" |
| #include "iwl-prph.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 = 1, |
| .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); |
| } |
| |
| 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; |
| } |
| } |
| |
| static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) |
| { |
| /* we create the 802.11 header and SSID element */ |
| if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID) |
| return mvm->fw->ucode_capa.max_probe_length - 24 - 2; |
| return mvm->fw->ucode_capa.max_probe_length - 24 - 34; |
| } |
| |
| int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) |
| { |
| struct ieee80211_hw *hw = mvm->hw; |
| int num_mac, ret, i; |
| |
| /* Tell mac80211 our characteristics */ |
| hw->flags = IEEE80211_HW_SIGNAL_DBM | |
| IEEE80211_HW_SPECTRUM_MGMT | |
| IEEE80211_HW_REPORTS_TX_ACK_STATUS | |
| IEEE80211_HW_QUEUE_CONTROL | |
| IEEE80211_HW_WANT_MONITOR_VIF | |
| IEEE80211_HW_SUPPORTS_PS | |
| IEEE80211_HW_SUPPORTS_DYNAMIC_PS | |
| IEEE80211_HW_AMPDU_AGGREGATION | |
| IEEE80211_HW_TIMING_BEACON_ONLY | |
| IEEE80211_HW_CONNECTION_MONITOR | |
| IEEE80211_HW_CHANCTX_STA_CSA | |
| IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS | |
| IEEE80211_HW_SUPPORTS_STATIC_SMPS; |
| |
| 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; |
| hw->rate_control_algorithm = "iwl-mvm-rs"; |
| |
| /* |
| * 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) |
| hw->flags |= IEEE80211_HW_MFP_CAPABLE; |
| |
| if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT && |
| IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 && |
| !iwlwifi_mod_params.uapsd_disable) { |
| hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD; |
| hw->uapsd_queues = IWL_UAPSD_AC_INFO; |
| hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; |
| } |
| |
| if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT && |
| !iwlwifi_mod_params.uapsd_disable) { |
| hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD; |
| hw->uapsd_queues = IWL_UAPSD_AC_INFO; |
| hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; |
| } |
| |
| if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) |
| hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS; |
| |
| 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_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; |
| |
| if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW) |
| 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; |
| |
| /* 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; |
| |
| 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]; |
| |
| 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->features |= NL80211_FEATURE_P2P_GO_CTWIN | |
| NL80211_FEATURE_LOW_PRIORITY_SCAN | |
| NL80211_FEATURE_P2P_GO_OPPPS; |
| |
| mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; |
| |
| /* 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]; |
| } |
| |
| #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; |
| } else 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; |
| 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.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; |
| |
| 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)) |
| 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; |
| } |
| |
| 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) |
| { |
| 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; |
| } |
| 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; |
| |
| /* does this make sense at all? */ |
| mvmvif->color++; |
| |
| 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; |
| } |
| |
| #ifdef CONFIG_IWLWIFI_DEBUGFS |
| static 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; |
| const struct fw_img *img; |
| u32 sram_len, sram_ofs; |
| u32 file_len, rxf_len; |
| unsigned long flags; |
| u32 trans_len; |
| int reg_val; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (mvm->fw_error_dump) |
| return; |
| |
| 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; |
| |
| /* reading buffer size */ |
| reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR); |
| rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS; |
| |
| /* the register holds the value divided by 128 */ |
| rxf_len = rxf_len << 7; |
| |
| file_len = sizeof(*dump_file) + |
| sizeof(*dump_data) * 3 + |
| sram_len + |
| rxf_len + |
| sizeof(*dump_info); |
| |
| trans_len = iwl_trans_dump_data(mvm->trans, NULL, 0); |
| if (trans_len) |
| file_len += trans_len; |
| |
| dump_file = vzalloc(file_len); |
| if (!dump_file) |
| return; |
| |
| mvm->fw_error_dump = dump_file; |
| |
| dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER); |
| dump_file->file_len = cpu_to_le32(file_len); |
| 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); |
| 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); |
| dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF); |
| dump_data->len = cpu_to_le32(rxf_len); |
| |
| if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) { |
| u32 *rxf = (void *)dump_data->data; |
| int i; |
| |
| for (i = 0; i < (rxf_len / sizeof(u32)); i++) { |
| iwl_trans_write_prph(mvm->trans, |
| RXF_LD_FENCE_OFFSET_ADDR, |
| i * sizeof(u32)); |
| rxf[i] = iwl_trans_read_prph(mvm->trans, |
| RXF_FIFO_RD_FENCE_ADDR); |
| } |
| iwl_trans_release_nic_access(mvm->trans, &flags); |
| } |
| |
| dump_data = iwl_fw_error_next_data(dump_data); |
| dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM); |
| dump_data->len = cpu_to_le32(sram_len); |
| iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data, |
| sram_len); |
| |
| if (trans_len) { |
| void *buf = iwl_fw_error_next_data(dump_data); |
| u32 real_trans_len = iwl_trans_dump_data(mvm->trans, buf, |
| trans_len); |
| dump_data = (void *)((u8 *)buf + real_trans_len); |
| dump_file->file_len = |
| cpu_to_le32(file_len - trans_len + real_trans_len); |
| } |
| } |
| #endif |
| |
| static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUGFS |
| static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL }; |
| |
| iwl_mvm_fw_error_dump(mvm); |
| |
| /* notify the userspace about the error we had */ |
| kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env); |
| #endif |
| |
| iwl_trans_stop_device(mvm->trans); |
| |
| mvm->scan_status = IWL_MVM_SCAN_NONE; |
| |
| /* just in case one was running */ |
| ieee80211_remain_on_channel_expired(mvm->hw); |
| |
| ieee80211_iterate_active_interfaces_atomic( |
| mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, |
| 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->fw_key_table, 0, sizeof(mvm->fw_key_table)); |
| memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained)); |
| |
| ieee80211_wake_queues(mvm->hw); |
| |
| /* 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); |
| |
| mvm->vif_count = 0; |
| mvm->rx_ba_sessions = 0; |
| } |
| |
| static int iwl_mvm_mac_start(struct ieee80211_hw *hw) |
| { |
| struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); |
| int ret; |
| |
| mutex_lock(&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); |
| } |
| |
| mutex_unlock(&mvm->mutex); |
| |
| return ret; |
| } |
| |
| static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw) |
| { |
| struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); |
| 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, 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); |
| |
| mutex_unlock(&mvm->mutex); |
| } |
| |
| 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); |
| |
| mutex_lock(&mvm->mutex); |
| |
| /* disallow low power states when the FW is down */ |
| 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. |
| */ |
| cancel_work_sync(&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_dealloc_int_sta(mvm, &mvm->aux_sta); |
| |
| 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, |
| s8 tx_power) |
| { |
| /* FW is in charge of regulatory enforcement */ |
| struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = { |
| .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id, |
| .pwr_restriction = cpu_to_le16(tx_power), |
| }; |
| |
| return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, |
| sizeof(reduce_txpwr_cmd), |
| &reduce_txpwr_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; |
| |
| /* |
| * 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); |
| |
| /* 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) { |
| u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif); |
| ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, |
| qmask, |
| ieee80211_vif_type_p2p(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; |
| } |
| |
| ret = iwl_mvm_mac_ctxt_add(mvm, vif); |
| if (ret) |
| goto out_release; |
| |
| ret = iwl_mvm_power_update_mac(mvm); |
| if (ret) |
| goto out_release; |
| |
| /* 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, &mvmvif->bcast_sta); |
| 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 = 0, ac; |
| |
| for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
| if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) |
| tfd_msk |= BIT(vif->hw_queue[ac]); |
| |
| if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) |
| tfd_msk |= BIT(vif->cab_queue); |
| |
| if (tfd_msk) { |
| mutex_lock(&mvm->mutex); |
| iwl_mvm_flush_tx_path(mvm, tfd_msk, true); |
| mutex_unlock(&mvm->mutex); |
| } |
| |
| 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_int_sta(mvm, &mvmvif->bcast_sta); |
| goto out_release; |
| } |
| |
| if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { |
| mvm->p2p_device_vif = NULL; |
| iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta); |
| 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 = netdev_hw_addr_list_count(mc_list); |
| bool pass_all = false; |
| int len; |
| |
| if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) { |
| pass_all = true; |
| 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; |
| } |
| |
| #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, |
| }; |
| |
| 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); |
| |
| ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false); |
| if (ret) |
| IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); |
| |
| if (changes & BSS_CHANGED_ASSOC) { |
| if (bss_conf->assoc) { |
| /* add quota for this interface */ |
| ret = iwl_mvm_update_quotas(mvm, 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); |
| } |
| |
| 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); |
| } 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, NULL); |
| if (ret) |
| IWL_ERR(mvm, "failed to update quotas\n"); |
| |
| if (vif->p2p) |
| iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); |
| } |
| |
| 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); |
| iwl_mvm_sf_update(mvm, vif, false); |
| WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); |
| } else 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); |
| |
| /* 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_bcast_sta(mvm, vif, &mvmvif->bcast_sta); |
| 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, 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); |
| |
| iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); |
| |
| iwl_mvm_bt_coex_vif_change(mvm); |
| |
| mutex_unlock(&mvm->mutex); |
| return 0; |
| |
| out_quota_failed: |
| iwl_mvm_power_update_mac(mvm); |
| mvmvif->ap_ibss_active = false; |
| iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); |
| 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); |
| } |
| |
| 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); |
| |
| iwl_mvm_update_quotas(mvm, NULL); |
| iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); |
| 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) && |
| iwl_mvm_mac_ctxt_changed(mvm, vif, false)) |
| 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"); |
| } |
| |
| 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_offload_stop(mvm, 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); |
| struct cfg80211_scan_request *req = &hw_req->req; |
| int ret; |
| |
| if (req->n_channels == 0 || |
| req->n_channels > mvm->fw->ucode_capa.n_scan_channels) |
| return -EINVAL; |
| |
| mutex_lock(&mvm->mutex); |
| |
| switch (mvm->scan_status) { |
| case IWL_MVM_SCAN_SCHED: |
| ret = iwl_mvm_scan_offload_stop(mvm, true); |
| if (ret) { |
| ret = -EBUSY; |
| goto out; |
| } |
| break; |
| case IWL_MVM_SCAN_NONE: |
| break; |
| default: |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN); |
| |
| if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) |
| ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req); |
| else |
| ret = iwl_mvm_scan_request(mvm, vif, req); |
| |
| if (ret) |
| iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
| out: |
| mutex_unlock(&mvm->mutex); |
| /* make sure to flush the Rx handler before the next scan arrives */ |
| iwl_mvm_wait_for_async_handlers(mvm); |
| 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); |
| |
| iwl_mvm_cancel_scan(mvm); |
| |
| 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); |
| int tid; |
| |
| switch (cmd) { |
| case STA_NOTIFY_SLEEP: |
| if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0) |
| ieee80211_sta_block_awake(hw, sta, true); |
| spin_lock_bh(&mvmsta->lock); |
| for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { |
| struct iwl_mvm_tid_data *tid_data; |
| |
| tid_data = &mvmsta->tid_data[tid]; |
| if (tid_data->state != IWL_AGG_ON && |
| tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA) |
| continue; |
| if (iwl_mvm_tid_queued(tid_data) == 0) |
| continue; |
| ieee80211_sta_set_buffered(sta, tid, true); |
| } |
| spin_unlock_bh(&mvmsta->lock); |
| /* |
| * 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; |
| iwl_mvm_sta_modify_ps_wake(mvm, sta); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| 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_sta *mvm_sta = (void *)sta->drv_priv; |
| |
| /* |
| * 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)); |
| mutex_unlock(&mvm->mutex); |
| } |
| |
| int iwl_mvm_tdls_sta_count(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
| { |
| struct ieee80211_sta *sta; |
| struct iwl_mvm_sta *mvmsta; |
| int count = 0; |
| int i; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| 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 (!sta || IS_ERR(sta) || !sta->tdls) |
| continue; |
| |
| if (vif) { |
| mvmsta = iwl_mvm_sta_from_mac80211(sta); |
| if (mvmsta->vif != vif) |
| continue; |
| } |
| |
| count++; |
| } |
| |
| return count; |
| } |
| |
| static void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif, |
| bool sta_added) |
| { |
| int tdls_sta_cnt = iwl_mvm_tdls_sta_count(mvm, vif); |
| |
| /* |
| * Disable ps when the first TDLS sta is added and re-enable it |
| * when the last TDLS sta is removed |
| */ |
| if ((tdls_sta_cnt == 1 && sta_added) || |
| (tdls_sta_cnt == 0 && !sta_added)) |
| iwl_mvm_power_update_mac(mvm); |
| } |
| |
| static void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm) |
| { |
| struct ieee80211_sta *sta; |
| struct iwl_mvm_sta *mvmsta; |
| int i; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| 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 (!sta || IS_ERR(sta) || !sta->tdls) |
| continue; |
| |
| mvmsta = iwl_mvm_sta_from_mac80211(sta); |
| ieee80211_tdls_oper_request(mvmsta->vif, sta->addr, |
| NL80211_TDLS_TEARDOWN, |
| WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED, |
| GFP_KERNEL); |
| } |
| } |
| |
| 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; |
| 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); |
| |
| 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); |
| 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); |
| mutex_unlock(&mvm->mutex); |
| |
| iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); |
| } |
| |
| static void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); |
| u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int; |
| |
| /* |
| * 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_PROTECT_TDLS)) |
| return; |
| |
| mutex_lock(&mvm->mutex); |
| /* Protect the session to hear the TDLS setup response on the channel */ |
| iwl_mvm_protect_session(mvm, vif, duration, duration, 100); |
| mutex_unlock(&mvm->mutex); |
| |
| iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_TDLS); |
| } |
| |
| 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 (!iwl_mvm_is_idle(mvm)) { |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| switch (mvm->scan_status) { |
| case IWL_MVM_SCAN_OS: |
| IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n"); |
| ret = iwl_mvm_cancel_scan(mvm); |
| if (ret) { |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| /* |
| * iwl_mvm_rx_scan_complete() will be called soon but will |
| * not reset the scan status as it won't be IWL_MVM_SCAN_OS |
| * any more since we queue the next scan immediately (below). |
| * We make sure it is called before the next scan starts by |
| * flushing the async-handlers work. |
| */ |
| break; |
| case IWL_MVM_SCAN_NONE: |
| break; |
| default: |
| ret = -EBUSY; |
| goto out; |
| } |
| |
| mvm->scan_status = IWL_MVM_SCAN_SCHED; |
| |
| if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) { |
| ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies); |
| if (ret) |
| goto err; |
| } |
| |
| ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
| if (ret) |
| goto err; |
| |
| if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) |
| ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies); |
| else |
| ret = iwl_mvm_sched_scan_start(mvm, req); |
| |
| if (!ret) |
| goto out; |
| err: |
| mvm->scan_status = IWL_MVM_SCAN_NONE; |
| out: |
| mutex_unlock(&mvm->mutex); |
| /* make sure to flush the Rx handler before the next scan arrives */ |
| iwl_mvm_wait_for_async_handlers(mvm); |
| 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); |
| ret = iwl_mvm_scan_offload_stop(mvm, 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; |
| /* fall-through */ |
| case WLAN_CIPHER_SUITE_CCMP: |
| key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| break; |
| case WLAN_CIPHER_SUITE_AES_CMAC: |
| WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE)); |
| break; |
| case WLAN_CIPHER_SUITE_WEP40: |
| case WLAN_CIPHER_SUITE_WEP104: |
| /* |
| * Support for TX only, at least for now, so accept |
| * the key and do nothing else. Then mac80211 will |
| * pass it for TX but we don't have to use it for RX. |
| */ |
| return 0; |
| 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; |
| } |
| |
| IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); |
| ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false); |
| 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 5000 |
| 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 u8 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); |
| |
| te_data->vif = vif; |
| te_data->duration = duration; |
| te_data->id = HOT_SPOT_CMD; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| spin_lock_bh(&mvm->time_event_lock); |
| list_add_tail(&te_data->list, &mvm->time_event_list); |
| 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); |
| |
| switch (vif->type) { |
| case NL80211_IFTYPE_STATION: |
| /* Use aux roc framework (HS20) */ |
| ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, |
| vif, duration); |
| return ret; |
| case NL80211_IFTYPE_P2P_DEVICE: |
| /* handle below */ |
| break; |
| default: |
| IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&mvm->mutex); |
| |
| 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_p2p_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: |
| /* Unless it's a CSA flow we have nothing to do here */ |
| if (vif->csa_active) { |
| 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: |
| case NL80211_IFTYPE_MONITOR: |
| 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, NULL); |
| if (ret) |
| goto out_remove_binding; |
| } |
| |
| /* Handle binding during CSA */ |
| if ((vif->type == NL80211_IFTYPE_AP) || |
| (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) { |
| iwl_mvm_update_quotas(mvm, NULL); |
| iwl_mvm_mac_ctxt_changed(mvm, vif, false); |
| } |
| |
| 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; |
| break; |
| case NL80211_IFTYPE_AP: |
| /* This part is triggered only during CSA */ |
| if (!vif->csa_active || !mvmvif->ap_ibss_active) |
| goto out; |
| |
| /* 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); |
| break; |
| default: |
| break; |
| } |
| |
| iwl_mvm_update_quotas(mvm, 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(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 SWAP_CONTEXTS and with a single-vif right now */ |
| if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1) |
| return -EOPNOTSUPP; |
| |
| 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; |
| } |
| |
| goto out; |
| |
| out_remove: |
| __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); |
| |
| out_reassign: |
| ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx); |
| if (ret) { |
| IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); |
| goto out_restart; |
| } |
| |
| ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, |
| true); |
| if (ret) { |
| 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_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 = (void *)sta->drv_priv; |
| |
| 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, 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_beacon(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct cfg80211_chan_def *chandef) |
| { |
| struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); |
| struct ieee80211_vif *csa_vif; |
| |
| mutex_lock(&mvm->mutex); |
| |
| csa_vif = rcu_dereference_protected(mvm->csa_vif, |
| lockdep_is_held(&mvm->mutex)); |
| if (WARN(csa_vif && csa_vif->csa_active, |
| "Another CSA is already in progress")) |
| goto out_unlock; |
| |
| IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n", |
| chandef->center_freq1); |
| rcu_assign_pointer(mvm->csa_vif, vif); |
| |
| out_unlock: |
| mutex_unlock(&mvm->mutex); |
| } |
| |
| 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; |
| |
| if (!vif || vif->type != NL80211_IFTYPE_STATION) |
| return; |
| |
| mutex_lock(&mvm->mutex); |
| mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id); |
| |
| if (WARN_ON_ONCE(!mvmsta)) |
| goto done; |
| |
| if (drop) { |
| if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true)) |
| IWL_ERR(mvm, "flush request fail\n"); |
| } else { |
| iwl_trans_wait_tx_queue_empty(mvm->trans, |
| mvmsta->tfd_queue_msk); |
| } |
| done: |
| mutex_unlock(&mvm->mutex); |
| } |
| |
| 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, |
| .restart_complete = iwl_mvm_mac_restart_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, |
| .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_beacon = iwl_mvm_channel_switch_beacon, |
| |
| 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 |
| }; |