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LeafOS / LeafOS-Devices / android_kernel_realme_mt6785 / 5d434fcb255dec99189f1c58a06e4f56e12bf77d / . / drivers / net / wireless / iwlwifi / mvm / mac80211.c
blob: 7e169b085afe05f1c4c5a17804e864d8bc15e9f2 [file] [log] [blame]
/******************************************************************************
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <net/mac80211.h>
#include "iwl-op-mode.h"
#include "iwl-io.h"
#include "mvm.h"
#include "sta.h"
#include "time-event.h"
#include "iwl-eeprom-parse.h"
#include "fw-api-scan.h"
#include "iwl-phy-db.h"
static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
{
.max = 1,
.types = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP),
},
{
.max = 1,
.types = BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_P2P_GO),
},
{
.max = 1,
.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
},
};
static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
{
.num_different_channels = 1,
.max_interfaces = 3,
.limits = iwl_mvm_limits,
.n_limits = ARRAY_SIZE(iwl_mvm_limits),
},
};
int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
{
struct ieee80211_hw *hw = mvm->hw;
int num_mac, ret;
/* Tell mac80211 our characteristics */
hw->flags = IEEE80211_HW_SIGNAL_DBM |
IEEE80211_HW_SPECTRUM_MGMT |
IEEE80211_HW_REPORTS_TX_ACK_STATUS |
IEEE80211_HW_QUEUE_CONTROL |
IEEE80211_HW_WANT_MONITOR_VIF |
IEEE80211_HW_SUPPORTS_PS |
IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
IEEE80211_HW_AMPDU_AGGREGATION |
IEEE80211_HW_TIMING_BEACON_ONLY;
hw->queues = IWL_FIRST_AMPDU_QUEUE;
hw->offchannel_tx_hw_queue = IWL_OFFCHANNEL_QUEUE;
hw->rate_control_algorithm = "iwl-mvm-rs";
/*
* Enable 11w if advertised by firmware and software crypto
* is not enabled (as the firmware will interpret some mgmt
* packets, so enabling it with software crypto isn't safe)
*/
if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
!iwlwifi_mod_params.sw_crypto)
hw->flags |= IEEE80211_HW_MFP_CAPABLE;
hw->sta_data_size = sizeof(struct iwl_mvm_sta);
hw->vif_data_size = sizeof(struct iwl_mvm_vif);
hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt);
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);
hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
WIPHY_FLAG_DISABLE_BEACON_HINTS |
WIPHY_FLAG_IBSS_RSN;
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 = 500;
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;
num_mac = mvm->nvm_data->n_hw_addrs;
if (num_mac > 1) {
memcpy(mvm->addresses[1].addr, mvm->addresses[0].addr,
ETH_ALEN);
mvm->addresses[1].addr[5]++;
hw->wiphy->n_addresses++;
}
/* we create the 802.11 header and a max-length SSID element */
hw->wiphy->max_scan_ie_len =
mvm->fw->ucode_capa.max_probe_length - 24 - 34;
hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
&mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
&mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
hw->wiphy->hw_version = mvm->trans->hw_id;
if (iwlwifi_mod_params.power_save)
hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
else
hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
NL80211_FEATURE_P2P_GO_OPPPS;
mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
#ifdef CONFIG_PM_SLEEP
if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
mvm->trans->ops->d3_suspend &&
mvm->trans->ops->d3_resume &&
device_can_wakeup(mvm->trans->dev)) {
hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
WIPHY_WOWLAN_DISCONNECT |
WIPHY_WOWLAN_EAP_IDENTITY_REQ |
WIPHY_WOWLAN_RFKILL_RELEASE;
if (!iwlwifi_mod_params.sw_crypto)
hw->wiphy->wowlan.flags |=
WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
WIPHY_WOWLAN_GTK_REKEY_FAILURE |
WIPHY_WOWLAN_4WAY_HANDSHAKE;
hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
}
#endif
ret = iwl_mvm_leds_init(mvm);
if (ret)
return ret;
return ieee80211_register_hw(mvm->hw);
}
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);
if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) {
IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n");
goto drop;
}
if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_OFFCHANNEL_QUEUE &&
!test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
goto drop;
if (control->sta) {
if (iwl_mvm_tx_skb(mvm, skb, control->sta))
goto drop;
return;
}
if (iwl_mvm_tx_skb_non_sta(mvm, skb))
goto drop;
return;
drop:
ieee80211_free_txskb(hw, skb);
}
static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid,
u16 *ssn, u8 buf_size)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
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 (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
ret = -EINVAL;
break;
}
ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
break;
case IEEE80211_AMPDU_RX_STOP:
ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
break;
case IEEE80211_AMPDU_TX_START:
ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
break;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
break;
case IEEE80211_AMPDU_TX_OPERATIONAL:
ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
break;
default:
WARN_ON_ONCE(1);
ret = -EINVAL;
break;
}
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
mvmvif->uploaded = false;
mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
/* does this make sense at all? */
mvmvif->color++;
spin_lock_bh(&mvm->time_event_lock);
iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
spin_unlock_bh(&mvm->time_event_lock);
if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
mvmvif->phy_ctxt = NULL;
}
static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
{
iwl_trans_stop_device(mvm->trans);
iwl_trans_stop_hw(mvm->trans, false);
mvm->scan_status = IWL_MVM_SCAN_NONE;
/* just in case one was running */
ieee80211_remain_on_channel_expired(mvm->hw);
ieee80211_iterate_active_interfaces_atomic(
mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
iwl_mvm_cleanup_iterator, mvm);
memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
ieee80211_wake_queues(mvm->hw);
mvm->vif_count = 0;
}
static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
mutex_lock(&mvm->mutex);
/* Clean up some internal and mac80211 state on restart */
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
iwl_mvm_restart_cleanup(mvm);
ret = iwl_mvm_up(mvm);
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
mutex_lock(&mvm->mutex);
clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
ret = iwl_mvm_update_quotas(mvm, NULL);
if (ret)
IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
ret);
mutex_unlock(&mvm->mutex);
}
static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
flush_work(&mvm->async_handlers_wk);
mutex_lock(&mvm->mutex);
/* async_handlers_wk is now blocked */
/*
* The work item could be running or queued if the
* ROC time event stops just as we get here.
*/
cancel_work_sync(&mvm->roc_done_wk);
iwl_trans_stop_device(mvm->trans);
iwl_trans_stop_hw(mvm->trans, false);
iwl_mvm_async_handlers_purge(mvm);
/* async_handlers_list is empty and will stay empty: HW is stopped */
/* the fw is stopped, the aux sta is dead: clean up driver state */
iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
mutex_unlock(&mvm->mutex);
/*
* The worker might have been waiting for the mutex, let it run and
* discover that its list is now empty.
*/
cancel_work_sync(&mvm->async_handlers_wk);
}
static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = data;
int ret;
ret = iwl_mvm_power_disable(mvm, vif);
if (ret)
IWL_ERR(mvm, "failed to disable power management\n");
}
static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = data;
iwl_mvm_power_update_mode(mvm, vif);
}
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;
/*
* Not much to do here. The stack will not allow interface
* types or combinations that we didn't advertise, so we
* don't really have to check the types.
*/
mutex_lock(&mvm->mutex);
/* Allocate resources for the MAC context, and add it the the fw */
ret = iwl_mvm_mac_ctxt_init(mvm, vif);
if (ret)
goto out_unlock;
/*
* 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) {
u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
qmask);
if (ret) {
IWL_ERR(mvm, "Failed to allocate bcast sta\n");
goto out_release;
}
goto out_unlock;
}
/*
* TODO: remove this temporary code.
* Currently MVM FW supports power management only on single MAC.
* Iterate and disable PM on all active interfaces.
* Note: the method below does not count the new interface being added
* at this moment.
*/
mvm->vif_count++;
if (mvm->vif_count > 1) {
IWL_DEBUG_MAC80211(mvm,
"Disable power on existing interfaces\n");
ieee80211_iterate_active_interfaces_atomic(
mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_pm_disable_iterator, mvm);
}
ret = iwl_mvm_mac_ctxt_add(mvm, vif);
if (ret)
goto out_release;
/*
* Update power state on the new interface. Admittedly, based on
* mac80211 logics this power update will disable power management
*/
iwl_mvm_power_update_mode(mvm, vif);
/*
* 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) {
struct ieee80211_channel *chan;
struct cfg80211_chan_def chandef;
mvmvif->phy_ctxt = &mvm->phy_ctxt_roc;
/*
* The channel used here isn't relevant as it's
* going to be overwritten as part of the ROC flow.
* For now use the first channel we have.
*/
chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt,
&chandef, 1, 1);
if (ret)
goto out_remove_mac;
ret = iwl_mvm_binding_add_vif(mvm, vif);
if (ret)
goto out_remove_phy;
ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
if (ret)
goto out_unbind;
/* Save a pointer to p2p device vif, so it can later be used to
* update the p2p device MAC when a GO is started/stopped */
mvm->p2p_device_vif = vif;
}
goto out_unlock;
out_unbind:
iwl_mvm_binding_remove_vif(mvm, vif);
out_remove_phy:
iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
out_remove_mac:
mvmvif->phy_ctxt = NULL;
iwl_mvm_mac_ctxt_remove(mvm, vif);
out_release:
/*
* TODO: remove this temporary code.
* Currently MVM FW supports power management only on single MAC.
* Check if only one additional interface remains after rereasing
* current one. Update power mode on the remaining interface.
*/
mvm->vif_count--;
IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
mvm->vif_count);
if (mvm->vif_count == 1) {
ieee80211_iterate_active_interfaces(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_power_update_iterator, mvm);
}
iwl_mvm_mac_ctxt_release(mvm, vif);
out_unlock:
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
u32 tfd_msk = 0, ac;
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
tfd_msk |= BIT(vif->hw_queue[ac]);
if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
tfd_msk |= BIT(vif->cab_queue);
if (tfd_msk) {
mutex_lock(&mvm->mutex);
iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
mutex_unlock(&mvm->mutex);
}
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
/*
* Flush the ROC worker which will flush the OFFCHANNEL queue.
* We assume here that all the packets sent to the OFFCHANNEL
* queue are sent in ROC session.
*/
flush_work(&mvm->roc_done_wk);
} else {
/*
* By now, all the AC queues are empty. The AGG queues are
* empty too. We already got all the Tx responses for all the
* packets in the queues. The drain work can have been
* triggered. Flush it. This work item takes the mutex, so kill
* it before we take it.
*/
flush_work(&mvm->sta_drained_wk);
}
}
static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
iwl_mvm_prepare_mac_removal(mvm, vif);
mutex_lock(&mvm->mutex);
/*
* 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) {
iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
goto out_release;
}
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
mvm->p2p_device_vif = NULL;
iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
iwl_mvm_binding_remove_vif(mvm, vif);
iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
mvmvif->phy_ctxt = NULL;
}
/*
* TODO: remove this temporary code.
* Currently MVM FW supports power management only on single MAC.
* Check if only one additional interface remains after removing
* current one. Update power mode on the remaining interface.
*/
if (mvm->vif_count)
mvm->vif_count--;
IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
mvm->vif_count);
if (mvm->vif_count == 1) {
ieee80211_iterate_active_interfaces(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_power_update_iterator, mvm);
}
iwl_mvm_mac_ctxt_remove(mvm, vif);
out_release:
iwl_mvm_mac_ctxt_release(mvm, vif);
mutex_unlock(&mvm->mutex);
}
static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
{
return 0;
}
static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
u64 multicast)
{
*total_flags = 0;
}
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;
ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
if (ret)
IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
if (changes & BSS_CHANGED_ASSOC) {
if (bss_conf->assoc) {
/* add quota for this interface */
ret = iwl_mvm_update_quotas(mvm, vif);
if (ret) {
IWL_ERR(mvm, "failed to update quotas\n");
return;
}
} else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
/* 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_STATION_COUNT;
/* remove quota for this interface */
ret = iwl_mvm_update_quotas(mvm, NULL);
if (ret)
IWL_ERR(mvm, "failed to update quotas\n");
}
} else if (changes & BSS_CHANGED_DTIM_PERIOD) {
/*
* We received a beacon _after_ association so
* remove the session protection.
*/
iwl_mvm_remove_time_event(mvm, mvmvif,
&mvmvif->time_event_data);
} else if (changes & BSS_CHANGED_PS) {
/*
* TODO: remove this temporary code.
* Currently MVM FW supports power management only on single
* MAC. Avoid power mode update if more than one interface
* is active.
*/
IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
mvm->vif_count);
if (mvm->vif_count == 1) {
ret = iwl_mvm_power_update_mode(mvm, vif);
if (ret)
IWL_ERR(mvm, "failed to update power mode\n");
}
}
}
static int iwl_mvm_start_ap(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;
mutex_lock(&mvm->mutex);
/* Send the beacon template */
ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
if (ret)
goto out_unlock;
/* 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;
mvmvif->ap_active = true;
/* Send the bcast station. At this stage the TBTT and DTIM time events
* are added and applied to the scheduler */
ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
if (ret)
goto out_unbind;
ret = iwl_mvm_update_quotas(mvm, vif);
if (ret)
goto out_rm_bcast;
/* Need to update the P2P Device MAC */
if (vif->p2p && mvm->p2p_device_vif)
iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
mutex_unlock(&mvm->mutex);
return 0;
out_rm_bcast:
iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
out_unbind:
iwl_mvm_binding_remove_vif(mvm, vif);
out_remove:
iwl_mvm_mac_ctxt_remove(mvm, vif);
out_unlock:
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_stop_ap(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);
mvmvif->ap_active = false;
/* Need to update the P2P Device MAC */
if (vif->p2p && mvm->p2p_device_vif)
iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
iwl_mvm_update_quotas(mvm, NULL);
iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
iwl_mvm_binding_remove_vif(mvm, vif);
iwl_mvm_mac_ctxt_remove(mvm, vif);
mutex_unlock(&mvm->mutex);
}
static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changes)
{
/* Need to send a new beacon template to the FW */
if (changes & BSS_CHANGED_BEACON) {
if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
IWL_WARN(mvm, "Failed updating beacon data\n");
}
}
static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changes)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mutex_lock(&mvm->mutex);
switch (vif->type) {
case NL80211_IFTYPE_STATION:
iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
break;
case NL80211_IFTYPE_AP:
iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
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 cfg80211_scan_request *req)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
return -EINVAL;
mutex_lock(&mvm->mutex);
if (mvm->scan_status == IWL_MVM_SCAN_NONE)
ret = iwl_mvm_scan_request(mvm, vif, req);
else
ret = -EBUSY;
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);
iwl_mvm_cancel_scan(mvm);
mutex_unlock(&mvm->mutex);
}
static void
iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
struct ieee80211_sta *sta, u16 tid,
int num_frames,
enum ieee80211_frame_release_type reason,
bool more_data)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
/* TODO: how do we tell the fw to send frames for a specific TID */
/*
* The fw will send EOSP notification when the last frame will be
* transmitted.
*/
iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
}
static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum sta_notify_cmd cmd,
struct ieee80211_sta *sta)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
switch (cmd) {
case STA_NOTIFY_SLEEP:
if (atomic_read(&mvmsta->pending_frames) > 0)
ieee80211_sta_block_awake(hw, sta, 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_INVALID_STATION))
break;
iwl_mvm_sta_modify_ps_wake(mvm, sta);
break;
default:
break;
}
}
static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
enum ieee80211_sta_state old_state,
enum ieee80211_sta_state new_state)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
sta->addr, old_state, new_state);
/* this would be a mac80211 bug ... but don't crash */
if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
return -EINVAL;
/* if a STA is being removed, reuse its ID */
flush_work(&mvm->sta_drained_wk);
mutex_lock(&mvm->mutex);
if (old_state == IEEE80211_STA_NOTEXIST &&
new_state == IEEE80211_STA_NONE) {
ret = iwl_mvm_add_sta(mvm, vif, sta);
} else if (old_state == IEEE80211_STA_NONE &&
new_state == IEEE80211_STA_AUTH) {
ret = 0;
} else if (old_state == IEEE80211_STA_AUTH &&
new_state == IEEE80211_STA_ASSOC) {
ret = iwl_mvm_update_sta(mvm, vif, sta);
if (ret == 0)
iwl_mvm_rs_rate_init(mvm, sta,
mvmvif->phy_ctxt->channel->band);
} else if (old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTHORIZED) {
ret = 0;
} else if (old_state == IEEE80211_STA_AUTHORIZED &&
new_state == IEEE80211_STA_ASSOC) {
ret = 0;
} else if (old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTH) {
ret = 0;
} else if (old_state == IEEE80211_STA_AUTH &&
new_state == IEEE80211_STA_NONE) {
ret = 0;
} else if (old_state == IEEE80211_STA_NONE &&
new_state == IEEE80211_STA_NOTEXIST) {
ret = iwl_mvm_rm_sta(mvm, vif, sta);
} else {
ret = -EIO;
}
mutex_unlock(&mvm->mutex);
return ret;
}
static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mvm->rts_threshold = value;
return 0;
}
static 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);
mutex_unlock(&mvm->mutex);
return ret;
}
return 0;
}
static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
200 + vif->bss_conf.beacon_int);
u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
100 + vif->bss_conf.beacon_int);
if (WARN_ON_ONCE(vif->bss_conf.assoc))
return;
mutex_lock(&mvm->mutex);
/* Try really hard to protect the session and hear a beacon */
iwl_mvm_protect_session(mvm, vif, duration, min_duration);
mutex_unlock(&mvm->mutex);
}
static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
enum set_key_cmd cmd,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
if (iwlwifi_mod_params.sw_crypto) {
IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
return -EOPNOTSUPP;
}
switch (key->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
/* fall-through */
case WLAN_CIPHER_SUITE_CCMP:
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
break;
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
/*
* Support for TX only, at least for now, so accept
* the key and do nothing else. Then mac80211 will
* pass it for TX but we don't have to use it for RX.
*/
return 0;
default:
return -EOPNOTSUPP;
}
mutex_lock(&mvm->mutex);
switch (cmd) {
case SET_KEY:
IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
if (ret) {
IWL_WARN(mvm, "set key failed\n");
/*
* can't add key for RX, but we don't need it
* in the device for TX so still return 0
*/
ret = 0;
}
break;
case DISABLE_KEY:
IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
break;
default:
ret = -EINVAL;
}
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_key_conf *keyconf,
struct ieee80211_sta *sta,
u32 iv32, u16 *phase1key)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
}
static int iwl_mvm_roc(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel *channel,
int duration)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct cfg80211_chan_def chandef;
int ret;
if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
return -EINVAL;
}
IWL_DEBUG_MAC80211(mvm, "enter (%d, %d)\n", channel->hw_value,
duration);
mutex_lock(&mvm->mutex);
cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
&chandef, 1, 1);
/* Schedule the time events */
ret = iwl_mvm_start_p2p_roc(mvm, vif, duration);
mutex_unlock(&mvm->mutex);
IWL_DEBUG_MAC80211(mvm, "leave\n");
return ret;
}
static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
IWL_DEBUG_MAC80211(mvm, "enter\n");
mutex_lock(&mvm->mutex);
iwl_mvm_stop_p2p_roc(mvm);
mutex_unlock(&mvm->mutex);
IWL_DEBUG_MAC80211(mvm, "leave\n");
return 0;
}
static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
int ret;
mutex_lock(&mvm->mutex);
IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
ctx->rx_chains_static,
ctx->rx_chains_dynamic);
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
mutex_lock(&mvm->mutex);
iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
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);
struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
mutex_lock(&mvm->mutex);
iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
ctx->rx_chains_static,
ctx->rx_chains_dynamic);
mutex_unlock(&mvm->mutex);
}
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);
struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
mutex_lock(&mvm->mutex);
mvmvif->phy_ctxt = phyctx;
switch (vif->type) {
case NL80211_IFTYPE_AP:
/*
* The AP binding flow is handled as part of the start_ap flow
* (in bss_info_changed).
*/
ret = 0;
goto out_unlock;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MONITOR:
break;
default:
ret = -EINVAL;
goto out_unlock;
}
ret = iwl_mvm_binding_add_vif(mvm, vif);
if (ret)
goto out_unlock;
/*
* 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) {
ret = iwl_mvm_update_quotas(mvm, vif);
if (ret)
goto out_remove_binding;
}
goto out_unlock;
out_remove_binding:
iwl_mvm_binding_remove_vif(mvm, vif);
out_unlock:
mutex_unlock(&mvm->mutex);
if (ret)
mvmvif->phy_ctxt = NULL;
return ret;
}
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);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
mutex_lock(&mvm->mutex);
iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
if (vif->type == NL80211_IFTYPE_AP)
goto out_unlock;
iwl_mvm_binding_remove_vif(mvm, vif);
switch (vif->type) {
case NL80211_IFTYPE_MONITOR:
iwl_mvm_update_quotas(mvm, vif);
break;
default:
break;
}
out_unlock:
mvmvif->phy_ctxt = NULL;
mutex_unlock(&mvm->mutex);
}
static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
struct ieee80211_sta *sta,
bool set)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
if (!mvm_sta || !mvm_sta->vif) {
IWL_ERR(mvm, "Station is not associated to a vif\n");
return -EINVAL;
}
return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
}
struct ieee80211_ops iwl_mvm_hw_ops = {
.tx = iwl_mvm_mac_tx,
.ampdu_action = iwl_mvm_mac_ampdu_action,
.start = iwl_mvm_mac_start,
.restart_complete = iwl_mvm_mac_restart_complete,
.stop = iwl_mvm_mac_stop,
.add_interface = iwl_mvm_mac_add_interface,
.remove_interface = iwl_mvm_mac_remove_interface,
.config = iwl_mvm_mac_config,
.configure_filter = iwl_mvm_configure_filter,
.bss_info_changed = iwl_mvm_bss_info_changed,
.hw_scan = iwl_mvm_mac_hw_scan,
.cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
.sta_state = iwl_mvm_mac_sta_state,
.sta_notify = iwl_mvm_mac_sta_notify,
.allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
.conf_tx = iwl_mvm_mac_conf_tx,
.mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
.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,
.start_ap = iwl_mvm_start_ap,
.stop_ap = iwl_mvm_stop_ap,
.set_tim = iwl_mvm_set_tim,
#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
};