/****************************************************************************** * * 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 * Copyright(c) 2016 Intel Deutschland 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 * 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 #include #include #include #include #include #include #include #include #include #include #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-nvm-parse.h" #include "fw-dbg.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); ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); if (iwl_mvm_has_new_rx_api(mvm)) ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); if (mvm->trans->num_rx_queues > 1) ieee80211_hw_set(hw, USES_RSS); if (mvm->trans->max_skb_frags) hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 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[NL80211_BAND_2GHZ].n_channels) hw->wiphy->bands[NL80211_BAND_2GHZ] = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { hw->wiphy->bands[NL80211_BAND_5GHZ] = &mvm->nvm_data->bands[NL80211_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[NL80211_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 &= ~(IWL_TX_CSUM_NETIF_FLAGS | NETIF_F_RXCSUM); /* We may support SW TX CSUM */ if (IWL_MVM_SW_TX_CSUM_OFFLOAD) hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; } 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, struct ieee80211_ampdu_params *params) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); int ret; bool tx_agg_ref = false; struct ieee80211_sta *sta = params->sta; enum ieee80211_ampdu_mlme_action action = params->action; u16 tid = params->tid; u16 *ssn = ¶ms->ssn; u8 buf_size = params->buf_size; bool amsdu = params->amsdu; u16 timeout = params->timeout; 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, buf_size, timeout); break; case IEEE80211_AMPDU_RX_STOP: ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, timeout); 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, amsdu); 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 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_mvm_stop_device(mvm); mvm->scan_status = 0; mvm->ps_disabled = false; mvm->calibrating = false; /* just in case one was running */ iwl_mvm_cleanup_roc_te(mvm); 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->fw_key_table, 0, sizeof(mvm->fw_key_table)); memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained)); memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames)); 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); if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { /* Clean up some internal and mac80211 state on restart */ iwl_mvm_restart_cleanup(mvm); } else { /* Hold the reference to prevent runtime suspend while * the start procedure runs. It's a bit confusing * that the UCODE_DOWN reference is taken, but it just * means "UCODE is not UP yet". ( TODO: rename this * reference). */ iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); } 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) && iwl_mvm_enter_d0i3_on_suspend(mvm)) WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), HZ), "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)); /* 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_mvm_stop_device(mvm); 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); iwl_free_fw_paging(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; } } } 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); flush_work(&mvm->add_stream_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 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) { return 0; } #endif static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mu_group_mgmt_cmd cmd = {}; memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, WLAN_MEMBERSHIP_LEN); memcpy(cmd.user_position, vif->bss_conf.mu_group.position, WLAN_USER_POSITION_LEN); return iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(DATA_PATH_GROUP, UPDATE_MU_GROUPS_CMD), 0, sizeof(cmd), &cmd); } static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) { if (vif->mu_mimo_owner) { struct iwl_mu_group_mgmt_notif *notif = _data; /* * MU-MIMO Group Id action frame is little endian. We treat * the data received from firmware as if it came from the * action frame, so no conversion is needed. */ ieee80211_update_mu_groups(vif, (u8 *)¬if->membership_status, (u8 *)¬if->user_position); } } void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_mu_mimo_iface_iterator, notif); } 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 (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc && mvmvif->lqm_active) iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT, 0, 0); /* * 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); } /* * The firmware tracks the MU-MIMO group on its own. * However, on HW restart we should restore this data. */ if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { ret = iwl_mvm_update_mu_groups(mvm, vif); if (ret) IWL_ERR(mvm, "failed to update VHT MU_MIMO groups\n"); } iwl_mvm_recalc_multicast(mvm); iwl_mvm_configure_bcast_filter(mvm); /* 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); if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) iwl_mvm_config_scan(mvm); } 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 | /* * Send power command on every beacon change, * because we may have not enabled beacon abort yet. */ BSS_CHANGED_BEACON_INFO)) { 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); } } 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_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)); 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 (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) { vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; return; } if (!vif->p2p && (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; return; } vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; } static void iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, u8 *peer_addr, enum nl80211_tdls_operation action) { struct iwl_fw_dbg_trigger_tlv *trig; struct iwl_fw_dbg_trigger_tdls *tdls_trig; if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS)) return; trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS); tdls_trig = (void *)trig->data; if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) return; if (!(tdls_trig->action_bitmap & BIT(action))) return; if (tdls_trig->peer_mode && memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) return; iwl_mvm_fw_dbg_collect_trig(mvm, trig, "TDLS event occurred, peer %pM, action %d", peer_addr, action); } static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvm_sta) { struct iwl_mvm_tid_data *tid_data; struct sk_buff *skb; int i; spin_lock_bh(&mvm_sta->lock); for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { tid_data = &mvm_sta->tid_data[i]; while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) ieee80211_free_txskb(mvm->hw, skb); } spin_unlock_bh(&mvm_sta->lock); } 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); /* * If we are in a STA removal flow and in DQA mode: * * This is after the sync_rcu part, so the queues have already been * flushed. No more TXs on their way in mac80211's path, and no more in * the queues. * Also, we won't be getting any new TX frames for this station. * What we might have are deferred TX frames that need to be taken care * of. * * Drop any still-queued deferred-frame before removing the STA, and * make sure the worker is no longer handling frames for this STA. */ if (old_state == IEEE80211_STA_NONE && new_state == IEEE80211_STA_NOTEXIST && iwl_mvm_is_dqa_supported(mvm)) { struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); flush_work(&mvm->add_stream_wk); /* * No need to make sure deferred TX indication is off since the * worker will already remove it if it was on */ } 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); iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, NL80211_TDLS_SETUP); } } 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) { if (vif->type == NL80211_IFTYPE_AP) { mvmvif->ap_assoc_sta_count++; iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); } 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); if (sta->tdls) iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, NL80211_TDLS_ENABLE_LINK); /* 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) { if (vif->type == NL80211_IFTYPE_AP) { mvmvif->ap_assoc_sta_count--; iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); } 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); iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, NL80211_TDLS_DISABLE_LINK); } } 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 = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 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); struct iwl_mvm_sta *mvmsta; struct iwl_mvm_key_pn *ptk_pn; int keyidx = key->keyidx; int ret; u8 key_offset; 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_PUT_IV_SPACE; 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. * CMAC in AP/IBSS modes must be done in software. */ if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) ret = -EOPNOTSUPP; else 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; } if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && sta && iwl_mvm_has_new_rx_api(mvm) && key->flags & IEEE80211_KEY_FLAG_PAIRWISE && (key->cipher == WLAN_CIPHER_SUITE_CCMP || key->cipher == WLAN_CIPHER_SUITE_GCMP)) { struct ieee80211_key_seq seq; int tid, q; mvmsta = iwl_mvm_sta_from_mac80211(sta); WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); ptk_pn = kzalloc(sizeof(*ptk_pn) + mvm->trans->num_rx_queues * sizeof(ptk_pn->q[0]), GFP_KERNEL); if (!ptk_pn) { ret = -ENOMEM; break; } for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { ieee80211_get_key_rx_seq(key, tid, &seq); for (q = 0; q < mvm->trans->num_rx_queues; q++) memcpy(ptk_pn->q[q].pn[tid], seq.ccmp.pn, IEEE80211_CCMP_PN_LEN); } rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); } /* in HW restart reuse the index, otherwise request a new one */ if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) key_offset = key->hw_key_idx; else key_offset = STA_KEY_IDX_INVALID; IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 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; } if (sta && iwl_mvm_has_new_rx_api(mvm) && key->flags & IEEE80211_KEY_FLAG_PAIRWISE && (key->cipher == WLAN_CIPHER_SUITE_CCMP || key->cipher == WLAN_CIPHER_SUITE_GCMP)) { mvmsta = iwl_mvm_sta_from_mac80211(sta); ptk_pn = rcu_dereference_protected( mvmsta->ptk_pn[keyidx], lockdep_is_held(&mvm->mutex)); RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); if (ptk_pn) kfree_rcu(ptk_pn, rcu_head); } 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_MIN_DURATION MSEC_TO_TU(100) #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 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; u32 dtim_interval = vif->bss_conf.dtim_period * vif->bss_conf.beacon_int; u32 req_dur, delay; 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 == NL80211_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)), }; delay = AUX_ROC_MIN_DELAY; req_dur = MSEC_TO_TU(duration); /* * If we are associated we want the delay time to be at least one * dtim interval so that the FW can wait until after the DTIM and * then start the time event, this will potentially allow us to * remain off-channel for the max duration. * Since we want to use almost a whole dtim interval we would also * like the delay to be for 2-3 dtim intervals, in case there are * other time events with higher priority. */ if (vif->bss_conf.assoc) { delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); /* We cannot remain off-channel longer than the DTIM interval */ if (dtim_interval <= req_dur) { req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; if (req_dur <= AUX_ROC_MIN_DURATION) req_dur = dtim_interval - AUX_ROC_MIN_SAFETY_BUFFER; } } aux_roc_req.duration = cpu_to_le32(req_dur); aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); IWL_DEBUG_TE(mvm, "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", channel->hw_value, req_dur, duration, delay, dtim_interval); /* 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; ret = iwl_mvm_add_snif_sta(mvm, vif); 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; iwl_mvm_rm_snif_sta(mvm, vif); 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: if (mvmvif->lqm_active) iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT, 0, 0); /* 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; /* Make sure we're done with the deferred traffic before flushing */ if (iwl_mvm_is_dqa_supported(mvm)) flush_work(&mvm->add_stream_wk); 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; } } void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, struct iwl_mvm_internal_rxq_notif *notif, u32 size) { DECLARE_WAIT_QUEUE_HEAD_ONSTACK(notif_waitq); u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; int ret; lockdep_assert_held(&mvm->mutex); if (!iwl_mvm_has_new_rx_api(mvm)) return; notif->cookie = mvm->queue_sync_cookie; if (notif->sync) atomic_set(&mvm->queue_sync_counter, mvm->trans->num_rx_queues); ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); if (ret) { IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); goto out; } if (notif->sync) ret = wait_event_timeout(notif_waitq, atomic_read(&mvm->queue_sync_counter) == 0, HZ); WARN_ON_ONCE(!ret); out: atomic_set(&mvm->queue_sync_counter, 0); mvm->queue_sync_cookie++; } static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_internal_rxq_notif data = { .type = IWL_MVM_RXQ_EMPTY, .sync = 1, }; mutex_lock(&mvm->mutex); iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 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, .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, .sync_rx_queues = iwl_mvm_sync_rx_queues, 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, };