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zircon-guest / third_party / linux / 50071aed9749ccbb7f65351a07707be8f654fa50 / . / drivers / net / wireless / intel / iwlwifi / mvm / mac80211.c
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/******************************************************************************
*
* 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) 2013 - 2015 Intel Mobile Communications GmbH
* Copyright(c) 2016 - 2017 Intel Deutschland GmbH
* Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation
*
* 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.
*
* The full GNU General Public License is included in this distribution
* in the file called COPYING.
*
* Contact Information:
* Intel Linux Wireless <linuxwifi@intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
* Copyright(c) 2016 - 2017 Intel Deutschland GmbH
* Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ip.h>
#include <linux/if_arp.h>
#include <linux/time.h>
#include <net/mac80211.h>
#include <net/ieee80211_radiotap.h>
#include <net/tcp.h>
#include "iwl-drv.h"
#include "iwl-op-mode.h"
#include "iwl-io.h"
#include "mvm.h"
#include "sta.h"
#include "time-event.h"
#include "iwl-eeprom-parse.h"
#include "iwl-phy-db.h"
#include "testmode.h"
#include "fw/error-dump.h"
#include "iwl-prph.h"
#include "iwl-nvm-parse.h"
static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
{
.max = 1,
.types = BIT(NL80211_IFTYPE_STATION),
},
{
.max = 1,
.types = BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_P2P_GO),
},
{
.max = 1,
.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
},
};
static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
{
.num_different_channels = 2,
.max_interfaces = 3,
.limits = iwl_mvm_limits,
.n_limits = ARRAY_SIZE(iwl_mvm_limits),
},
};
#ifdef CONFIG_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
static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = {
.max_peers = IWL_MVM_TOF_MAX_APS,
.report_ap_tsf = 1,
.randomize_mac_addr = 1,
.ftm = {
.supported = 1,
.asap = 1,
.non_asap = 1,
.request_lci = 1,
.request_civicloc = 1,
.max_bursts_exponent = -1, /* all supported */
.max_ftms_per_burst = 0, /* no limits */
.bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
BIT(NL80211_CHAN_WIDTH_20) |
BIT(NL80211_CHAN_WIDTH_40) |
BIT(NL80211_CHAN_WIDTH_80),
.preambles = BIT(NL80211_PREAMBLE_LEGACY) |
BIT(NL80211_PREAMBLE_HT) |
BIT(NL80211_PREAMBLE_VHT),
},
};
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);
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) {
u32 status = le32_to_cpu(resp->status);
*changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
status == MCC_RESP_ILLEGAL);
}
regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
__le32_to_cpu(resp->n_channels),
resp->channels,
__le16_to_cpu(resp->mcc),
__le16_to_cpu(resp->geo_info),
__le16_to_cpu(resp->cap));
/* 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;
}
const static u8 he_if_types_ext_capa_sta[] = {
[0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
[2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
};
const static struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = {
{
.iftype = NL80211_IFTYPE_STATION,
.extended_capabilities = he_if_types_ext_capa_sta,
.extended_capabilities_mask = he_if_types_ext_capa_sta,
.extended_capabilities_len = sizeof(he_if_types_ext_capa_sta),
},
};
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,
};
#ifdef CONFIG_PM_SLEEP
bool unified = fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
#endif
/* 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, 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);
ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
ieee80211_hw_set(hw, BUFF_MMPDU_TXQ);
ieee80211_hw_set(hw, STA_MMPDU_TXQ);
/*
* On older devices, enabling TX A-MSDU occasionally leads to
* something getting messed up, the command read from the FIFO
* gets out of sync and isn't a TX command, so that we have an
* assert EDC.
*
* It's not clear where the bug is, but since we didn't used to
* support A-MSDU until moving the mac80211 iTXQs, just leave it
* for older devices. We also don't see this issue on any newer
* devices.
*/
if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000)
ieee80211_hw_set(hw, TX_AMSDU);
ieee80211_hw_set(hw, TX_FRAG_LIST);
if (iwl_mvm_has_tlc_offload(mvm)) {
ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
ieee80211_hw_set(hw, HAS_RATE_CONTROL);
}
if (iwl_mvm_has_new_rx_api(mvm))
ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
if (fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
ieee80211_hw_set(hw, AP_LINK_PS);
} else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
/*
* we absolutely need this for the new TX API since that comes
* with many more queues than the current code can deal with
* for station powersave
*/
return -EINVAL;
}
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 = IEEE80211_MAX_QUEUES;
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->radiotap_timestamp.units_pos =
IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
/* this is the case for CCK frames, it's better (only 8) for OFDM */
hw->radiotap_timestamp.accuracy = 22;
if (!iwl_mvm_has_tlc_offload(mvm))
hw->rate_control_algorithm = RS_NAME;
hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
hw->max_tx_fragments = mvm->trans->max_skb_frags;
BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
hw->wiphy->cipher_suites = mvm->ciphers;
if (iwl_mvm_has_new_rx_api(mvm)) {
mvm->ciphers[hw->wiphy->n_cipher_suites] =
WLAN_CIPHER_SUITE_GCMP;
hw->wiphy->n_cipher_suites++;
mvm->ciphers[hw->wiphy->n_cipher_suites] =
WLAN_CIPHER_SUITE_GCMP_256;
hw->wiphy->n_cipher_suites++;
}
/* Enable 11w if software crypto is not enabled (as the
* firmware will interpret some mgmt packets, so enabling it
* with software crypto isn't safe).
*/
if (!iwlwifi_mod_params.swcrypto) {
ieee80211_hw_set(hw, MFP_CAPABLE);
mvm->ciphers[hw->wiphy->n_cipher_suites] =
WLAN_CIPHER_SUITE_AES_CMAC;
hw->wiphy->n_cipher_suites++;
if (iwl_mvm_has_new_rx_api(mvm)) {
mvm->ciphers[hw->wiphy->n_cipher_suites] =
WLAN_CIPHER_SUITE_BIP_GMAC_128;
hw->wiphy->n_cipher_suites++;
mvm->ciphers[hw->wiphy->n_cipher_suites] =
WLAN_CIPHER_SUITE_BIP_GMAC_256;
hw->wiphy->n_cipher_suites++;
}
}
/* currently FW API supports only one optional cipher scheme */
if (mvm->fw->cs[0].cipher) {
const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
mvm->hw->n_cipher_schemes = 1;
cs->cipher = le32_to_cpu(fwcs->cipher);
cs->iftype = BIT(NL80211_IFTYPE_STATION);
cs->hdr_len = fwcs->hdr_len;
cs->pn_len = fwcs->pn_len;
cs->pn_off = fwcs->pn_off;
cs->key_idx_off = fwcs->key_idx_off;
cs->key_idx_mask = fwcs->key_idx_mask;
cs->key_idx_shift = fwcs->key_idx_shift;
cs->mic_len = fwcs->mic_len;
mvm->hw->cipher_schemes = mvm->cs;
mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
hw->wiphy->n_cipher_suites++;
}
if (fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) {
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER);
hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa;
}
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->txq_data_size = sizeof(struct iwl_mvm_txq);
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;
wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
hw->wiphy->features |= NL80211_FEATURE_HT_IBSS;
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;
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;
/* 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->max_sched_scan_reqs = 1;
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_AP_MODE_CHAN_WIDTH_CHANGE |
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;
if (fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_SCAN_START_TIME);
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_BSS_PARENT_TSF);
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_SET_SCAN_DWELL);
}
if (iwl_mvm_is_oce_supported(mvm)) {
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
}
if (mvm->nvm_data->sku_cap_11ax_enable &&
!iwlwifi_mod_params.disable_11ax) {
hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa;
hw->wiphy->num_iftype_ext_capab =
ARRAY_SIZE(he_iftypes_ext_capa);
ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID);
}
mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
#ifdef CONFIG_PM_SLEEP
if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) &&
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.swcrypto)
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;
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;
}
if (mvm->cfg->vht_mu_mimo_supported)
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
ret = ieee80211_register_hw(mvm->hw);
if (ret) {
iwl_mvm_leds_exit(mvm);
}
return ret;
}
static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
struct ieee80211_sta *sta)
{
if (likely(sta)) {
if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0))
return;
} else {
if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0))
return;
}
ieee80211_free_txskb(mvm->hw, skb);
}
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;
bool offchannel = IEEE80211_SKB_CB(skb)->flags &
IEEE80211_TX_CTL_TX_OFFCHAN;
if (iwl_mvm_is_radio_killed(mvm)) {
IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
goto drop;
}
if (offchannel &&
!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 on AP interfaces as broadcast */
if ((info->control.vif->type == NL80211_IFTYPE_AP ||
info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
ieee80211_is_mgmt(hdr->frame_control) &&
!ieee80211_is_bufferable_mmpdu(hdr->frame_control))
sta = NULL;
/* If there is no sta, and it's not offchannel - send through AP */
if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION &&
!offchannel) {
struct iwl_mvm_vif *mvmvif =
iwl_mvm_vif_from_mac80211(info->control.vif);
u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id);
if (ap_sta_id < IWL_MVM_STATION_COUNT) {
/* mac80211 holds rcu read lock */
sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
if (IS_ERR_OR_NULL(sta))
goto drop;
}
}
iwl_mvm_tx_skb(mvm, skb, sta);
return;
drop:
ieee80211_free_txskb(hw, skb);
}
void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
struct sk_buff *skb = NULL;
/*
* No need for threads to be pending here, they can leave the first
* taker all the work.
*
* mvmtxq->tx_request logic:
*
* If 0, no one is currently TXing, set to 1 to indicate current thread
* will now start TX and other threads should quit.
*
* If 1, another thread is currently TXing, set to 2 to indicate to
* that thread that there was another request. Since that request may
* have raced with the check whether the queue is empty, the TXing
* thread should check the queue's status one more time before leaving.
* This check is done in order to not leave any TX hanging in the queue
* until the next TX invocation (which may not even happen).
*
* If 2, another thread is currently TXing, and it will already double
* check the queue, so do nothing.
*/
if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2))
return;
rcu_read_lock();
do {
while (likely(!mvmtxq->stopped &&
(mvm->trans->system_pm_mode ==
IWL_PLAT_PM_MODE_DISABLED))) {
skb = ieee80211_tx_dequeue(hw, txq);
if (!skb) {
if (txq->sta)
IWL_DEBUG_TX(mvm,
"TXQ of sta %pM tid %d is now empty\n",
txq->sta->addr,
txq->tid);
break;
}
iwl_mvm_tx_skb(mvm, skb, txq->sta);
}
} while (atomic_dec_return(&mvmtxq->tx_request));
rcu_read_unlock();
}
static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw,
struct ieee80211_txq *txq)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
/*
* Please note that racing is handled very carefully here:
* mvmtxq->txq_id is updated during allocation, and mvmtxq->list is
* deleted afterwards.
* This means that if:
* mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list):
* queue is allocated and we can TX.
* mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list):
* a race, should defer the frame.
* mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list):
* need to allocate the queue and defer the frame.
* mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list):
* queue is already scheduled for allocation, no need to allocate,
* should defer the frame.
*/
/* If the queue is allocated TX and return. */
if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) {
/*
* Check that list is empty to avoid a race where txq_id is
* already updated, but the queue allocation work wasn't
* finished
*/
if (unlikely(txq->sta && !list_empty(&mvmtxq->list)))
return;
iwl_mvm_mac_itxq_xmit(hw, txq);
return;
}
/* The list is being deleted only after the queue is fully allocated. */
if (!list_empty(&mvmtxq->list))
return;
list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs);
schedule_work(&mvm->add_stream_wk);
}
#define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \
do { \
if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \
break; \
iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _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;
trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
FW_DBG_TRIGGER_BA);
if (!trig)
return;
ba_trig = (void *)trig->data;
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;
struct ieee80211_sta *sta = params->sta;
enum ieee80211_ampdu_mlme_action action = params->action;
u16 tid = params->tid;
u16 *ssn = &params->ssn;
u16 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;
mutex_lock(&mvm->mutex);
switch (action) {
case IEEE80211_AMPDU_RX_START:
if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
iwl_mvm_sta_from_mac80211(sta)->sta_id) {
struct iwl_mvm_vif *mvmvif;
u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];
mdata->opened_rx_ba_sessions = true;
mvmvif = iwl_mvm_vif_from_mac80211(vif);
cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
}
if (!iwl_enable_rx_ampdu()) {
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()) {
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);
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_INVALID_STA;
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));
memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
}
static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
{
iwl_mvm_stop_device(mvm);
mvm->cur_aid = 0;
mvm->scan_status = 0;
mvm->ps_disabled = false;
mvm->rfkill_safe_init_done = false;
/* just in case one was running */
iwl_mvm_cleanup_roc_te(mvm);
ieee80211_remain_on_channel_expired(mvm->hw);
iwl_mvm_ftm_restart(mvm);
/*
* 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;
iwl_mvm_reset_phy_ctxts(mvm);
memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
ieee80211_wake_queues(mvm->hw);
mvm->vif_count = 0;
mvm->rx_ba_sessions = 0;
mvm->fwrt.dump.conf = FW_DBG_INVALID;
mvm->monitor_on = false;
/* 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_HW_RESTART_REQUESTED, &mvm->status)) {
/*
* Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
* so later code will - from now on - see that we're doing it.
*/
set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
/* Clean up some internal and mac80211 state on restart */
iwl_mvm_restart_cleanup(mvm);
}
ret = iwl_mvm_up(mvm);
iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT,
NULL);
iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC,
NULL);
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);
}
return ret;
}
static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
int retry, max_retry = 0;
mutex_lock(&mvm->mutex);
/* we are starting the mac not in error flow, and restart is enabled */
if (!test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) &&
iwlwifi_mod_params.fw_restart) {
max_retry = IWL_MAX_INIT_RETRY;
/*
* This will prevent mac80211 recovery flows to trigger during
* init failures
*/
set_bit(IWL_MVM_STATUS_STARTING, &mvm->status);
}
for (retry = 0; retry <= max_retry; retry++) {
ret = __iwl_mvm_mac_start(mvm);
if (!ret)
break;
IWL_ERR(mvm, "mac start retry %d\n", retry);
}
clear_bit(IWL_MVM_STATUS_STARTING, &mvm->status);
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);
ret = iwl_mvm_update_quotas(mvm, true, NULL);
if (ret)
IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
ret);
iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY);
/*
* 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_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:
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_rm_aux_sta(mvm);
iwl_mvm_stop_device(mvm);
iwl_mvm_async_handlers_purge(mvm);
/* async_handlers_list is empty and will stay empty: HW is stopped */
/*
* Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
* hw (as restart_complete() won't be called in this case) and mac80211
* won't execute the restart.
* 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) ||
test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
&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->async_handlers_wk);
flush_work(&mvm->add_stream_wk);
/*
* Lock and clear the firmware running bit here already, so that
* new commands coming in elsewhere, e.g. from debugfs, will not
* be able to proceed. This is important here because one of those
* debugfs files causes the firmware dump to be triggered, and if we
* don't stop debugfs accesses before canceling that it could be
* retriggered after we flush it but before we've cleared the bit.
*/
clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
iwl_fw_free_dump_desc(&mvm->fwrt);
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)
{
int len;
union {
struct iwl_dev_tx_power_cmd v5;
struct iwl_dev_tx_power_cmd_v4 v4;
} cmd = {
.v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
.v5.v3.mac_context_id =
cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
.v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power),
};
if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
if (fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_REDUCE_TX_POWER))
len = sizeof(cmd.v5);
else if (fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
len = sizeof(cmd.v4);
else
len = sizeof(cmd.v4.v3);
return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
}
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;
mvmvif->csa_bcn_pending = false;
mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
mvmvif->ap_sta_id);
if (WARN_ON(!mvmsta)) {
ret = -EIO;
goto out_unlock;
}
if (!fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
if (!fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
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_abort_channel_switch(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);
struct iwl_chan_switch_te_cmd cmd = {
.mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
mvmvif->color)),
.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
};
IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id);
mutex_lock(&mvm->mutex);
WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
WIDE_ID(MAC_CONF_GROUP,
CHANNEL_SWITCH_TIME_EVENT_CMD),
0, sizeof(cmd), &cmd));
mutex_unlock(&mvm->mutex);
WARN_ON(iwl_mvm_post_channel_switch(hw, vif));
}
static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk)
{
struct iwl_mvm *mvm;
struct iwl_mvm_vif *mvmvif;
struct ieee80211_vif *vif;
mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work);
vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
mvm = mvmvif->mvm;
iwl_mvm_abort_channel_switch(mvm->hw, vif);
ieee80211_chswitch_done(vif, false);
}
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;
RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
/*
* 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;
rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif);
/* 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;
}
/*
* Only queue for this station is the mcast queue,
* which shouldn't be in TFD mask anyway
*/
ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
0, vif->type,
IWL_STA_MULTICAST);
if (ret)
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_p2p_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_tcm_add_vif(mvm, vif);
INIT_DELAYED_WORK(&mvmvif->csa_work,
iwl_mvm_channel_switch_disconnect_wk);
if (vif->type == NL80211_IFTYPE_MONITOR)
mvm->monitor_on = true;
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--;
out_unlock:
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
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);
}
}
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);
struct iwl_probe_resp_data *probe_data;
iwl_mvm_prepare_mac_removal(mvm, vif);
if (!(vif->type == NL80211_IFTYPE_AP ||
vif->type == NL80211_IFTYPE_ADHOC))
iwl_mvm_tcm_rm_vif(mvm, vif);
mutex_lock(&mvm->mutex);
probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
lockdep_is_held(&mvm->mutex));
RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
if (probe_data)
kfree_rcu(probe_data, rcu_head);
if (mvm->bf_allowed_vif == mvmvif) {
mvm->bf_allowed_vif = NULL;
vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
IEEE80211_VIF_SUPPORTS_CQM_RSSI);
}
if (vif->bss_conf.ftm_responder)
memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats));
iwl_mvm_vif_dbgfs_clean(mvm, vif);
/*
* For AP/GO interface, the tear down of the resources allocated to the
* interface is be handled as part of the stop_ap flow.
*/
if (vif->type == NL80211_IFTYPE_AP ||
vif->type == NL80211_IFTYPE_ADHOC) {
#ifdef CONFIG_NL80211_TESTMODE
if (vif == mvm->noa_vif) {
mvm->noa_vif = NULL;
mvm->noa_duration = 0;
}
#endif
iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
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_p2p_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);
RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);
if (vif->type == NL80211_IFTYPE_MONITOR)
mvm->monitor_on = false;
out_release:
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;
struct iwl_host_cmd hcmd = {
.id = MCAST_FILTER_CMD,
.flags = CMD_ASYNC,
.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
};
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);
hcmd.len[0] = len;
hcmd.data[0] = cmd;
ret = iwl_mvm_send_cmd(mvm, &hcmd);
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,
};
int ret;
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);
/*
* Send a (synchronous) ech command so that we wait for the
* multiple asynchronous MCAST_FILTER_CMD commands sent by
* the interface iterator. Otherwise, we might get here over
* and over again (by userspace just sending a lot of these)
* and the CPU can send them faster than the firmware can
* process them.
* Note that the CPU is still faster - but with this we'll
* actually send fewer commands overall because the CPU will
* not schedule the work in mac80211 as frequently if it's
* still running when rescheduled (possibly multiple times).
*/
ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);
if (ret)
IWL_ERR(mvm, "Failed to synchronize multicast groups update\n");
}
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;
if (changed_flags & FIF_ALLMULTI)
cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
if (cmd->pass_all)
cmd->count = 0;
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 *)&notif->membership_status,
(u8 *)&notif->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 u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
{
u8 byte_num = ppe_pos_bit / 8;
u8 bit_num = ppe_pos_bit % 8;
u8 residue_bits;
u8 res;
if (bit_num <= 5)
return (ppe[byte_num] >> bit_num) &
(BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);
/*
* If bit_num > 5, we have to combine bits with next byte.
* Calculate how many bits we need to take from current byte (called
* here "residue_bits"), and add them to bits from next byte.
*/
residue_bits = 8 - bit_num;
res = (ppe[byte_num + 1] &
(BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
residue_bits;
res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);
return res;
}
static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
struct ieee80211_vif *vif, u8 sta_id)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_he_sta_context_cmd sta_ctxt_cmd = {
.sta_id = sta_id,
.tid_limit = IWL_MAX_TID_COUNT,
.bss_color = vif->bss_conf.he_bss_color.color,
.htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
.frame_time_rts_th =
cpu_to_le16(vif->bss_conf.frame_time_rts_th),
};
int size = fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_MBSSID_HE) ?
sizeof(sta_ctxt_cmd) :
sizeof(struct iwl_he_sta_context_cmd_v1);
struct ieee80211_sta *sta;
u32 flags;
int i;
rcu_read_lock();
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
if (IS_ERR_OR_NULL(sta)) {
rcu_read_unlock();
WARN(1, "Can't find STA to configure HE\n");
return;
}
if (!sta->he_cap.has_he) {
rcu_read_unlock();
return;
}
flags = 0;
/* Block 26-tone RU OFDMA transmissions */
if (mvmvif->he_ru_2mhz_block)
flags |= STA_CTXT_HE_RU_2MHZ_BLOCK;
/* HTC flags */
if (sta->he_cap.he_cap_elem.mac_cap_info[0] &
IEEE80211_HE_MAC_CAP0_HTC_HE)
sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
if ((sta->he_cap.he_cap_elem.mac_cap_info[1] &
IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
(sta->he_cap.he_cap_elem.mac_cap_info[2] &
IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
u8 link_adap =
((sta->he_cap.he_cap_elem.mac_cap_info[2] &
IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
(sta->he_cap.he_cap_elem.mac_cap_info[1] &
IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);
if (link_adap == 2)
sta_ctxt_cmd.htc_flags |=
cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
else if (link_adap == 3)
sta_ctxt_cmd.htc_flags |=
cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
}
if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
if (sta->he_cap.he_cap_elem.mac_cap_info[3] &
IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);
/*
* Initialize the PPE thresholds to "None" (7), as described in Table
* 9-262ac of 80211.ax/D3.0.
*/
memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext));
/* If PPE Thresholds exist, parse them into a FW-familiar format. */
if (sta->he_cap.he_cap_elem.phy_cap_info[6] &
IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
u8 nss = (sta->he_cap.ppe_thres[0] &
IEEE80211_PPE_THRES_NSS_MASK) + 1;
u8 ru_index_bitmap =
(sta->he_cap.ppe_thres[0] &
IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >>
IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS;
u8 *ppe = &sta->he_cap.ppe_thres[0];
u8 ppe_pos_bit = 7; /* Starting after PPE header */
/*
* FW currently supports only nss == MAX_HE_SUPP_NSS
*
* If nss > MAX: we can ignore values we don't support
* If nss < MAX: we can set zeros in other streams
*/
if (nss > MAX_HE_SUPP_NSS) {
IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
MAX_HE_SUPP_NSS);
nss = MAX_HE_SUPP_NSS;
}
for (i = 0; i < nss; i++) {
u8 ru_index_tmp = ru_index_bitmap << 1;
u8 bw;
for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) {
ru_index_tmp >>= 1;
if (!(ru_index_tmp & 1))
continue;
sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] =
iwl_mvm_he_get_ppe_val(ppe,
ppe_pos_bit);
ppe_pos_bit +=
IEEE80211_PPE_THRES_INFO_PPET_SIZE;
sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] =
iwl_mvm_he_get_ppe_val(ppe,
ppe_pos_bit);
ppe_pos_bit +=
IEEE80211_PPE_THRES_INFO_PPET_SIZE;
}
}
flags |= STA_CTXT_HE_PACKET_EXT;
} else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] &
IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) !=
IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) {
int low_th = -1;
int high_th = -1;
/* Take the PPE thresholds from the nominal padding info */
switch (sta->he_cap.he_cap_elem.phy_cap_info[9] &
IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) {
case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US:
low_th = IWL_HE_PKT_EXT_NONE;
high_th = IWL_HE_PKT_EXT_NONE;
break;
case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US:
low_th = IWL_HE_PKT_EXT_BPSK;
high_th = IWL_HE_PKT_EXT_NONE;
break;
case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US:
low_th = IWL_HE_PKT_EXT_NONE;
high_th = IWL_HE_PKT_EXT_BPSK;
break;
}
/* Set the PPE thresholds accordingly */
if (low_th >= 0 && high_th >= 0) {
struct iwl_he_pkt_ext *pkt_ext =
(struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext;
for (i = 0; i < MAX_HE_SUPP_NSS; i++) {
u8 bw;
for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX;
bw++) {
pkt_ext->pkt_ext_qam_th[i][bw][0] =
low_th;
pkt_ext->pkt_ext_qam_th[i][bw][1] =
high_th;
}
}
flags |= STA_CTXT_HE_PACKET_EXT;
}
}
rcu_read_unlock();
/* Mark MU EDCA as enabled, unless none detected on some AC */
flags |= STA_CTXT_HE_MU_EDCA_CW;
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
&mvmvif->queue_params[i].mu_edca_param_rec;
u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
if (!mvmvif->queue_params[i].mu_edca) {
flags &= ~STA_CTXT_HE_MU_EDCA_CW;
break;
}
sta_ctxt_cmd.trig_based_txf[ac].cwmin =
cpu_to_le16(mu_edca->ecw_min_max & 0xf);
sta_ctxt_cmd.trig_based_txf[ac].cwmax =
cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
sta_ctxt_cmd.trig_based_txf[ac].aifsn =
cpu_to_le16(mu_edca->aifsn);
sta_ctxt_cmd.trig_based_txf[ac].mu_time =
cpu_to_le16(mu_edca->mu_edca_timer);
}
if (vif->bss_conf.multi_sta_back_32bit)
flags |= STA_CTXT_HE_32BIT_BA_BITMAP;
if (vif->bss_conf.ack_enabled)
flags |= STA_CTXT_HE_ACK_ENABLED;
if (vif->bss_conf.uora_exists) {
flags |= STA_CTXT_HE_TRIG_RND_ALLOC;
sta_ctxt_cmd.rand_alloc_ecwmin =
vif->bss_conf.uora_ocw_range & 0x7;
sta_ctxt_cmd.rand_alloc_ecwmax =
(vif->bss_conf.uora_ocw_range >> 3) & 0x7;
}
if (vif->bss_conf.nontransmitted) {
flags |= STA_CTXT_HE_REF_BSSID_VALID;
ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr,
vif->bss_conf.transmitter_bssid);
sta_ctxt_cmd.max_bssid_indicator =
vif->bss_conf.bssid_indicator;
sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index;
sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap;
sta_ctxt_cmd.profile_periodicity =
vif->bss_conf.profile_periodicity;
}
sta_ctxt_cmd.flags = cpu_to_le32(flags);
if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD,
DATA_PATH_GROUP, 0),
0, size, &sta_ctxt_cmd))
IWL_ERR(mvm, "Failed to config FW to work HE!\n");
}
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) {
if (vif->bss_conf.he_support &&
!iwlwifi_mod_params.disable_11ax)
iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
}
/* Update MU EDCA params */
if (changes & BSS_CHANGED_QOS && mvmvif->associated &&
bss_conf->assoc && vif->bss_conf.he_support &&
!iwlwifi_mod_params.disable_11ax)
iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
/*
* 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_update_smps(mvm, vif,
IWL_MVM_SMPS_REQ_PROT,
IEEE80211_SMPS_DYNAMIC);
}
} else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
/*
* If update fails - SF might be running in associated
* mode while disassociated - which is forbidden.
*/
ret = iwl_mvm_sf_update(mvm, vif, false);
WARN_ONCE(ret &&
!test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
&mvm->status),
"Failed to update SF upon disassociation\n");
/*
* If we get an assert during the connection (after the
* station has been added, but before the vif is set
* to associated), mac80211 will re-add the station and
* then configure the vif. Since the vif is not
* associated, we would remove the station here and
* this would fail the recovery.
*/
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
&mvm->status)) {
/*
* 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");
mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
}
/* remove quota for this interface */
ret = iwl_mvm_update_quotas(mvm, false, NULL);
if (ret)
IWL_ERR(mvm, "failed to update quotas\n");
/* 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);
}
if (changes & BSS_CHANGED_BEACON_INFO) {
/*
* We received a beacon from the associated AP so
* remove the session protection.
*/
iwl_mvm_stop_session_protection(mvm, vif);
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, i;
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;
/*
* This is not very nice, but the simplest:
* For older FWs adding the mcast sta before the bcast station may
* cause assert 0x2b00.
* This is fixed in later FW so make the order of removal depend on
* the TLV
*/
if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
ret = iwl_mvm_add_mcast_sta(mvm, vif);
if (ret)
goto out_unbind;
/*
* 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) {
iwl_mvm_rm_mcast_sta(mvm, vif);
goto out_unbind;
}
} else {
/*
* 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;
ret = iwl_mvm_add_mcast_sta(mvm, vif);
if (ret) {
iwl_mvm_send_rm_bcast_sta(mvm, vif);
goto out_unbind;
}
}
/* must be set before quota calculations */
mvmvif->ap_ibss_active = true;
/* send all the early keys to the device now */
for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i];
if (!key)
continue;
mvmvif->ap_early_keys[i] = NULL;
ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
if (ret)
goto out_quota_failed;
}
if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
iwl_mvm_vif_set_low_latency(mvmvif, true,
LOW_LATENCY_VIF_TYPE);
iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id);
}
/* 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_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);
iwl_mvm_ftm_restart_responder(mvm, vif);
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);
iwl_mvm_rm_mcast_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);
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;
if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
iwl_mvm_vif_set_low_latency(mvmvif, false,
LOW_LATENCY_VIF_TYPE);
iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id);
}
iwl_mvm_bt_coex_vif_change(mvm);
/* 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);
/*
* This is not very nice, but the simplest:
* For older FWs removing the mcast sta before the bcast station may
* cause assert 0x2b00.
* This is fixed in later FW (which will stop beaconing when removing
* bcast station).
* So make the order of removal depend on the TLV
*/
if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
iwl_mvm_rm_mcast_sta(mvm, vif);
iwl_mvm_send_rm_bcast_sta(mvm, vif);
if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
iwl_mvm_rm_mcast_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);
}
if (changes & BSS_CHANGED_FTM_RESPONDER) {
int ret = iwl_mvm_ftm_start_responder(mvm, vif);
if (ret)
IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n",
ret);
}
}
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);
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;
case NL80211_IFTYPE_MONITOR:
if (changes & BSS_CHANGED_MU_GROUPS)
iwl_mvm_update_mu_groups(mvm, vif);
break;
default:
/* shouldn't happen */
WARN_ON_ONCE(1);
}
mutex_unlock(&mvm->mutex);
}
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 or dqa 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,
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;
/*
* If we have TVQM then we get too high queue numbers - luckily
* we really shouldn't get here with that because such hardware
* should have firmware supporting buffer station offload.
*/
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
return;
spin_lock_bh(&mvmsta->lock);
for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) {
struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
continue;
__set_bit(tid_data->txq_id, &txqs);
if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
continue;
__set_bit(tid, &tids);
}
switch (cmd) {
case STA_NOTIFY_SLEEP:
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_INVALID_STA))
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_mac_sta_notify(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum sta_notify_cmd cmd,
struct ieee80211_sta *sta)
{
__iwl_mvm_mac_sta_notify(hw, cmd, sta);
}
void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
struct ieee80211_sta *sta;
struct iwl_mvm_sta *mvmsta;
bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
return;
rcu_read_lock();
sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
if (WARN_ON(IS_ERR_OR_NULL(sta))) {
rcu_read_unlock();
return;
}
mvmsta = iwl_mvm_sta_from_mac80211(sta);
if (!mvmsta->vif ||
mvmsta->vif->type != NL80211_IFTYPE_AP) {
rcu_read_unlock();
return;
}
if (mvmsta->sleeping != sleeping) {
mvmsta->sleeping = sleeping;
__iwl_mvm_mac_sta_notify(mvm->hw,
sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
sta);
ieee80211_sta_ps_transition(sta, sleeping);
}
if (sleeping) {
switch (notif->type) {
case IWL_MVM_PM_EVENT_AWAKE:
case IWL_MVM_PM_EVENT_ASLEEP:
break;
case IWL_MVM_PM_EVENT_UAPSD:
ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
break;
case IWL_MVM_PM_EVENT_PS_POLL:
ieee80211_sta_pspoll(sta);
break;
default:
break;
}
}
rcu_read_unlock();
}
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)
{
int i;
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
struct iwl_mvm_tcm_mac *mdata;
mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
mdata->opened_rx_ba_sessions = false;
}
if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
return;
if (vif->p2p && !iwl_mvm_is_p2p_scm_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;
}
for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
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;
trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
FW_DBG_TRIGGER_TDLS);
if (!trig)
return;
tdls_trig = (void *)trig->data;
if (!(tdls_trig->action_bitmap & BIT(action)))
return;
if (tdls_trig->peer_mode &&
memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
return;
iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
"TDLS event occurred, peer %pM, action %d",
peer_addr, action);
}
struct iwl_mvm_he_obss_narrow_bw_ru_data {
bool tolerated;
};
static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy,
struct cfg80211_bss *bss,
void *_data)
{
struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data;
const struct cfg80211_bss_ies *ies;
const struct element *elem;
rcu_read_lock();
ies = rcu_dereference(bss->ies);
elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data,
ies->len);
if (!elem || elem->datalen < 10 ||
!(elem->data[10] &
WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) {
data->tolerated = false;
}
rcu_read_unlock();
}
static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = {
.tolerated = true,
};
if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) {
mvmvif->he_ru_2mhz_block = false;
return;
}
cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef,
iwl_mvm_check_he_obss_narrow_bw_ru_iter,
&iter_data);
/*
* If there is at least one AP on radar channel that cannot
* tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU.
*/
mvmvif->he_ru_2mhz_block = !iter_data.tolerated;
}
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);
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
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 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL;
/*
* 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) {
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);
/* track whether or not the station is associated */
mvm_sta->sta_state = new_state;
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 (vif->type == NL80211_IFTYPE_STATION)
vif->bss_conf.he_support = sta->he_cap.has_he;
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);
}
sta->max_rc_amsdu_len = 1;
} 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) {
vif->bss_conf.he_support = sta->he_cap.has_he;
mvmvif->ap_assoc_sta_count++;
iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
if (vif->bss_conf.he_support &&
!iwlwifi_mod_params.disable_11ax)
iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id);
} else if (vif->type == NL80211_IFTYPE_STATION) {
vif->bss_conf.he_support = sta->he_cap.has_he;
mvmvif->he_ru_2mhz_block = false;
if (sta->he_cap.has_he)
iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif);
iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
}
iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
false);
ret = iwl_mvm_update_sta(mvm, vif, sta);
} else if (old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTHORIZED) {
ret = 0;
/* 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));
/*
* Now that the station is authorized, i.e., keys were already
* installed, need to indicate to the FW that
* multicast data frames can be forwarded to the driver
*/
iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
true);
} else if (old_state == IEEE80211_STA_AUTHORIZED &&
new_state == IEEE80211_STA_ASSOC) {
/* Multicast data frames are no longer allowed */
iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
/* disable beacon filtering */
ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
WARN_ON(ret &&
!test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
&mvm->status));
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);
}
if (unlikely(ret &&
test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
&mvm->status)))
ret = 0;
} 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);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (changed & (IEEE80211_RC_BW_CHANGED |
IEEE80211_RC_SUPP_RATES_CHANGED |
IEEE80211_RC_NSS_CHANGED))
iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
true);
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,
u16 req_duration)
{
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 (req_duration > duration)
duration = req_duration;
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);
}
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_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
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, i;
u8 key_offset;
if (iwlwifi_mod_params.swcrypto) {
IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
return -EOPNOTSUPP;
}
switch (key->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
if (!mvm->trans->trans_cfg->gen2) {
key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
} else if (vif->type == NL80211_IFTYPE_STATION) {
key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE;
} else {
IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n");
return -EOPNOTSUPP;
}
break;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
if (!iwl_mvm_has_new_tx_api(mvm))
key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
break;
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
if (vif->type == NL80211_IFTYPE_STATION)
break;
if (iwl_mvm_has_new_tx_api(mvm))
return -EOPNOTSUPP;
/* support HW crypto on TX */
return 0;
default:
/* currently FW supports only one optional cipher scheme */
if (hw->n_cipher_schemes &&
hw->cipher_schemes->cipher == key->cipher)
key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
else
return -EOPNOTSUPP;
}
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/GMAC in AP/IBSS modes must be done in software.
*/
if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
ret = -EOPNOTSUPP;
else
ret = 0;
if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
!iwl_mvm_has_new_tx_api(mvm)) {
key->hw_key_idx = STA_KEY_IDX_INVALID;
break;
}
if (!mvmvif->ap_ibss_active) {
for (i = 0;
i < ARRAY_SIZE(mvmvif->ap_early_keys);
i++) {
if (!mvmvif->ap_early_keys[i]) {
mvmvif->ap_early_keys[i] = key;
break;
}
}
if (i >= ARRAY_SIZE(mvmvif->ap_early_keys))
ret = -ENOSPC;
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 ||
key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
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(struct_size(ptk_pn, q,
mvm->trans->num_rx_queues),
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");
key->hw_key_idx = STA_KEY_IDX_INVALID;
/*
* can't add key for RX, but we don't need it
* in the device for TX so still return 0,
* unless we have new TX API where we cannot
* put key material into the TX_CMD
*/
if (iwl_mvm_has_new_tx_api(mvm))
ret = -EOPNOTSUPP;
else
ret = 0;
}
break;
case DISABLE_KEY:
ret = -ENOENT;
for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
if (mvmvif->ap_early_keys[i] == key) {
mvmvif->ap_early_keys[i] = NULL;
ret = 0;
}
}
/* found in pending list - don't do anything else */
if (ret == 0)
break;
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 ||
key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
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;
}
return ret;
}
static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
mutex_lock(&mvm->mutex);
ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key);
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: Received 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;
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),
};
struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm,
&aux_roc_req.channel_info);
u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm);
/* Set the channel info data */
iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value,
(channel->band == NL80211_BAND_2GHZ) ?
PHY_BAND_24 : PHY_BAND_5,
PHY_VHT_CHANNEL_MODE20,
0);
/* Set the time and duration */
tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm));
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;
}
}
tail->duration = cpu_to_le32(req_dur);
tail->apply_time_max_delay = cpu_to_le32(delay);
IWL_DEBUG_TE(mvm,
"ROC: Requesting to remain on channel %u for %ums\n",
channel->hw_value, req_dur);
IWL_DEBUG_TE(mvm,
"\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
duration, delay, dtim_interval);
/* Set the node address */
memcpy(tail->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, len,
&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;
bool band_change_removal;
int ret, i;
IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
duration, type);
/*
* Flush the done work, just in case it's still pending, so that
* the work it does can complete and we can accept new frames.
*/
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);
/*
* Check if the remain-on-channel is on a different band and that
* requires context removal, see iwl_mvm_phy_ctxt_changed(). If
* so, we'll need to release and then re-configure here, since we
* must not remove a PHY context that's part of a binding.
*/
band_change_removal =
fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
mvmvif->phy_ctxt->channel->band != chandef.chan->band;
if (mvmvif->phy_ctxt->ref == 1 && !band_change_removal) {
/*
* Change the PHY context configuration as it is currently
* referenced only by the P2P Device MAC (and we can modify it)
*/
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 (or we're trying to
* switch bands), so 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 ieee80211_vif *vif)
{
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;
}
struct iwl_mvm_ftm_responder_iter_data {
bool responder;
struct ieee80211_chanctx_conf *ctx;
};
static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm_ftm_responder_iter_data *data = _data;
if (rcu_access_pointer(vif->chanctx_conf) == data->ctx &&
vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params)
data->responder = true;
}
static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm,
struct ieee80211_chanctx_conf *ctx)
{
struct iwl_mvm_ftm_responder_iter_data data = {
.responder = false,
.ctx = ctx,
};
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_ftm_responder_chanctx_iter,
&data);
return data.responder;
}
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;
bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
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, 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];
bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
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);
/* we are only changing the min_width, may be a noop */
if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
if (phy_ctxt->width == def->width)
goto out_unlock;
/* we are just toggling between 20_NOHT and 20 */
if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
def->width <= NL80211_CHAN_WIDTH_20)
goto out_unlock;
}
iwl_mvm_bt_coex_vif_change(mvm);
iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
ctx->rx_chains_static,
ctx->rx_chains_dynamic);
out_unlock:
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;
}
/* fall through */
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:
mvmvif->csa_bcn_pending = false;
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) {
mvmvif->csa_bcn_pending = true;
if (!fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
u32 duration = 3 * vif->bss_conf.beacon_int;
/* 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_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;
if (!fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
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:
if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD) &&
switching_chanctx)
return;
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_tx_last_beacon(struct ieee80211_hw *hw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
return mvm->ibss_manager;
}
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_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len,
iwl_mvm_tm_policy, NULL);
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, true, 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_schedule_client_csa(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_channel_switch *chsw)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_chan_switch_te_cmd cmd = {
.mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
mvmvif->color)),
.action = cpu_to_le32(FW_CTXT_ACTION_ADD),
.tsf = cpu_to_le32(chsw->timestamp),
.cs_count = chsw->count,
.cs_mode = chsw->block_tx,
};
lockdep_assert_held(&mvm->mutex);
if (chsw->delay)
cmd.cs_delayed_bcn_count =
DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int);
return iwl_mvm_send_cmd_pdu(mvm,
WIDE_ID(MAC_CONF_GROUP,
CHANNEL_SWITCH_TIME_EVENT_CMD),
0, sizeof(cmd), &cmd);
}
static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_channel_switch *chsw)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
u32 apply_time;
/* Schedule the time event to a bit before beacon 1,
* to make sure we're in the new channel when the
* GO/AP arrives. In case count <= 1 immediately schedule the
* TE (this might result with some packet loss or connection
* loss).
*/
if (chsw->count <= 1)
apply_time = 0;
else
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);
if (mvmvif->bf_data.bf_enabled) {
int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
if (ret)
return ret;
}
iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
apply_time);
return 0;
}
#define IWL_MAX_CSA_BLOCK_TX 1500
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);
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->fwrt,
ieee80211_vif_to_wdev(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;
}
/* we still didn't unblock tx. prevent new CS meanwhile */
if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
lockdep_is_held(&mvm->mutex))) {
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;
}
mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
break;
case NL80211_IFTYPE_STATION:
if (chsw->block_tx) {
/*
* In case of undetermined / long time with immediate
* quiet monitor status to gracefully disconnect
*/
if (!chsw->count ||
chsw->count * vif->bss_conf.beacon_int >
IWL_MAX_CSA_BLOCK_TX)
schedule_delayed_work(&mvmvif->csa_work,
msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX));
}
if (!fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw);
if (ret)
goto out_unlock;
} else {
iwl_mvm_schedule_client_csa(mvm, vif, chsw);
}
mvmvif->csa_count = chsw->count;
mvmvif->csa_misbehave = false;
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 void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel_switch *chsw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_chan_switch_te_cmd cmd = {
.mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
mvmvif->color)),
.action = cpu_to_le32(FW_CTXT_ACTION_MODIFY),
.tsf = cpu_to_le32(chsw->timestamp),
.cs_count = chsw->count,
.cs_mode = chsw->block_tx,
};
if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY))
return;
if (chsw->count >= mvmvif->csa_count && chsw->block_tx) {
if (mvmvif->csa_misbehave) {
/* Second time, give up on this AP*/
iwl_mvm_abort_channel_switch(hw, vif);
ieee80211_chswitch_done(vif, false);
mvmvif->csa_misbehave = false;
return;
}
mvmvif->csa_misbehave = true;
}
mvmvif->csa_count = chsw->count;
IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d\n", mvmvif->id);
WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
WIDE_ID(MAC_CONF_GROUP,
CHANNEL_SWITCH_TIME_EVENT_CMD),
CMD_ASYNC, sizeof(cmd), &cmd));
}
static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
{
int i;
if (!iwl_mvm_has_new_tx_api(mvm)) {
if (drop) {
mutex_lock(&mvm->mutex);
iwl_mvm_flush_tx_path(mvm,
iwl_mvm_flushable_queues(mvm) & queues, 0);
mutex_unlock(&mvm->mutex);
} else {
iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
}
return;
}
mutex_lock(&mvm->mutex);
for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
struct ieee80211_sta *sta;
sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
lockdep_is_held(&mvm->mutex));
if (IS_ERR_OR_NULL(sta))
continue;
if (drop)
iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0);
else
iwl_mvm_wait_sta_queues_empty(mvm,
iwl_mvm_sta_from_mac80211(sta));
}
mutex_unlock(&mvm->mutex);
}
static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u32 queues, bool drop)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif;
struct iwl_mvm_sta *mvmsta;
struct ieee80211_sta *sta;
int i;
u32 msk = 0;
if (!vif) {
iwl_mvm_flush_no_vif(mvm, queues, drop);
return;
}
if (vif->type != NL80211_IFTYPE_STATION)
return;
/* Make sure we're done with the deferred traffic before flushing */
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 < ARRAY_SIZE(mvm->fw_id_to_mac_id); 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);
if (drop) {
if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
IWL_ERR(mvm, "flush request fail\n");
} else {
msk |= mvmsta->tfd_queue_msk;
if (iwl_mvm_has_new_tx_api(mvm))
iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
}
}
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
*/
if (!drop && !iwl_mvm_has_new_tx_api(mvm))
iwl_trans_wait_tx_queues_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 (iwl_mvm_firmware_running(mvm)) {
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 (mvmsta->avg_energy) {
sinfo->signal_avg = mvmsta->avg_energy;
sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
}
/* 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_ULL(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_ULL(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(_cnt, _fmt...) \
do { \
if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \
break; \
iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \
} while (0)
struct iwl_fw_dbg_trigger_tlv *trig;
struct iwl_fw_dbg_trigger_mlme *trig_mlme;
trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
FW_DBG_TRIGGER_MLME);
if (!trig)
return;
trig_mlme = (void *)trig->data;
if (event->u.mlme.data == ASSOC_EVENT) {
if (event->u.mlme.status == MLME_DENIED)
CHECK_MLME_TRIGGER(stop_assoc_denied,
"DENIED ASSOC: reason %d",
event->u.mlme.reason);
else if (event->u.mlme.status == MLME_TIMEOUT)
CHECK_MLME_TRIGGER(stop_assoc_timeout,
"ASSOC TIMEOUT");
} else if (event->u.mlme.data == AUTH_EVENT) {
if (event->u.mlme.status == MLME_DENIED)
CHECK_MLME_TRIGGER(stop_auth_denied,
"DENIED AUTH: reason %d",
event->u.mlme.reason);
else if (event->u.mlme.status == MLME_TIMEOUT)
CHECK_MLME_TRIGGER(stop_auth_timeout,
"AUTH TIMEOUT");
} else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
CHECK_MLME_TRIGGER(stop_rx_deauth,
"DEAUTH RX %d", event->u.mlme.reason);
} else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
CHECK_MLME_TRIGGER(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;
trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
FW_DBG_TRIGGER_BA);
if (!trig)
return;
ba_trig = (void *)trig->data;
if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
return;
iwl_fw_dbg_collect_trig(&mvm->fwrt, 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_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->u.ba.sta,
event->u.ba.tid);
break;
default:
break;
}
}
void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
struct iwl_mvm_internal_rxq_notif *notif,
u32 size)
{
u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
int ret;
if (!iwl_mvm_has_new_rx_api(mvm))
return;
if (notif->sync) {
notif->cookie = mvm->queue_sync_cookie;
atomic_set(&mvm->queue_sync_counter,
mvm->trans->num_rx_queues);
}
ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif,
size, !notif->sync);
if (ret) {
IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
goto out;
}
if (notif->sync) {
lockdep_assert_held(&mvm->mutex);
ret = wait_event_timeout(mvm->rx_sync_waitq,
atomic_read(&mvm->queue_sync_counter) == 0 ||
iwl_mvm_is_radio_killed(mvm),
HZ);
WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
}
out:
atomic_set(&mvm->queue_sync_counter, 0);
if (notif->sync)
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);
}
static int
iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_ftm_responder_stats *stats)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
!mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder)
return -EINVAL;
mutex_lock(&mvm->mutex);
*stats = mvm->ftm_resp_stats;
mutex_unlock(&mvm->mutex);
stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) |
BIT(NL80211_FTM_STATS_PARTIAL_NUM) |
BIT(NL80211_FTM_STATS_FAILED_NUM) |
BIT(NL80211_FTM_STATS_ASAP_NUM) |
BIT(NL80211_FTM_STATS_NON_ASAP_NUM) |
BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) |
BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) |
BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) |
BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM);
return 0;
}
static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_pmsr_request *request)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
mutex_lock(&mvm->mutex);
ret = iwl_mvm_ftm_start(mvm, vif, request);
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_pmsr_request *request)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mutex_lock(&mvm->mutex);
iwl_mvm_ftm_abort(mvm, request);
mutex_unlock(&mvm->mutex);
}
static bool iwl_mvm_can_hw_csum(struct sk_buff *skb)
{
u8 protocol = ip_hdr(skb)->protocol;
if (!IS_ENABLED(CONFIG_INET))
return false;
return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP;
}
static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw,
struct sk_buff *head,
struct sk_buff *skb)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
/* For now don't aggregate IPv6 in AMSDU */
if (skb->protocol != htons(ETH_P_IP))
return false;
if (!iwl_mvm_is_csum_supported(mvm))
return true;
return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head);
}
const struct ieee80211_ops iwl_mvm_hw_ops = {
.tx = iwl_mvm_mac_tx,
.wake_tx_queue = iwl_mvm_mac_wake_tx_queue,
.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,
.tx_last_beacon = iwl_mvm_tx_last_beacon,
.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,
.abort_channel_switch = iwl_mvm_abort_channel_switch,
.channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon,
.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,
.get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats,
.start_pmsr = iwl_mvm_start_pmsr,
.abort_pmsr = iwl_mvm_abort_pmsr,
.can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate,
#ifdef CONFIG_IWLWIFI_DEBUGFS
.sta_add_debugfs = iwl_mvm_sta_add_debugfs,
#endif
};