+++ /dev/null
-/******************************************************************************
- *
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
- * USA
- *
- * The full GNU General Public License is included in this distribution
- * in the file called COPYING.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- * BSD LICENSE
- *
- * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *****************************************************************************/
-#include "mvm.h"
-
-/* For counting bound interfaces */
-struct iwl_mvm_active_iface_iterator_data {
- struct ieee80211_vif *ignore_vif;
- u8 sta_vif_ap_sta_id;
- enum iwl_sf_state sta_vif_state;
- int num_active_macs;
-};
-
-/*
- * Count bound interfaces which are not p2p, besides data->ignore_vif.
- * data->station_vif will point to one bound vif of type station, if exists.
- */
-static void iwl_mvm_bound_iface_iterator(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_active_iface_iterator_data *data = _data;
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- if (vif == data->ignore_vif || !mvmvif->phy_ctxt ||
- vif->type == NL80211_IFTYPE_P2P_DEVICE)
- return;
-
- data->num_active_macs++;
-
- if (vif->type == NL80211_IFTYPE_STATION) {
- data->sta_vif_ap_sta_id = mvmvif->ap_sta_id;
- if (vif->bss_conf.assoc)
- data->sta_vif_state = SF_FULL_ON;
- else
- data->sta_vif_state = SF_INIT_OFF;
- }
-}
-
-/*
- * Aging and idle timeouts for the different possible scenarios
- * in default configuration
- */
-static const
-__le32 sf_full_timeout_def[SF_NUM_SCENARIO][SF_NUM_TIMEOUT_TYPES] = {
- {
- cpu_to_le32(SF_SINGLE_UNICAST_AGING_TIMER_DEF),
- cpu_to_le32(SF_SINGLE_UNICAST_IDLE_TIMER_DEF)
- },
- {
- cpu_to_le32(SF_AGG_UNICAST_AGING_TIMER_DEF),
- cpu_to_le32(SF_AGG_UNICAST_IDLE_TIMER_DEF)
- },
- {
- cpu_to_le32(SF_MCAST_AGING_TIMER_DEF),
- cpu_to_le32(SF_MCAST_IDLE_TIMER_DEF)
- },
- {
- cpu_to_le32(SF_BA_AGING_TIMER_DEF),
- cpu_to_le32(SF_BA_IDLE_TIMER_DEF)
- },
- {
- cpu_to_le32(SF_TX_RE_AGING_TIMER_DEF),
- cpu_to_le32(SF_TX_RE_IDLE_TIMER_DEF)
- },
-};
-
-/*
- * Aging and idle timeouts for the different possible scenarios
- * in single BSS MAC configuration.
- */
-static const __le32 sf_full_timeout[SF_NUM_SCENARIO][SF_NUM_TIMEOUT_TYPES] = {
- {
- cpu_to_le32(SF_SINGLE_UNICAST_AGING_TIMER),
- cpu_to_le32(SF_SINGLE_UNICAST_IDLE_TIMER)
- },
- {
- cpu_to_le32(SF_AGG_UNICAST_AGING_TIMER),
- cpu_to_le32(SF_AGG_UNICAST_IDLE_TIMER)
- },
- {
- cpu_to_le32(SF_MCAST_AGING_TIMER),
- cpu_to_le32(SF_MCAST_IDLE_TIMER)
- },
- {
- cpu_to_le32(SF_BA_AGING_TIMER),
- cpu_to_le32(SF_BA_IDLE_TIMER)
- },
- {
- cpu_to_le32(SF_TX_RE_AGING_TIMER),
- cpu_to_le32(SF_TX_RE_IDLE_TIMER)
- },
-};
-
-static void iwl_mvm_fill_sf_command(struct iwl_mvm *mvm,
- struct iwl_sf_cfg_cmd *sf_cmd,
- struct ieee80211_sta *sta)
-{
- int i, j, watermark;
-
- sf_cmd->watermark[SF_LONG_DELAY_ON] = cpu_to_le32(SF_W_MARK_SCAN);
-
- /*
- * If we are in association flow - check antenna configuration
- * capabilities of the AP station, and choose the watermark accordingly.
- */
- if (sta) {
- if (sta->ht_cap.ht_supported || sta->vht_cap.vht_supported) {
- switch (sta->rx_nss) {
- case 1:
- watermark = SF_W_MARK_SISO;
- break;
- case 2:
- watermark = SF_W_MARK_MIMO2;
- break;
- default:
- watermark = SF_W_MARK_MIMO3;
- break;
- }
- } else {
- watermark = SF_W_MARK_LEGACY;
- }
- /* default watermark value for unassociated mode. */
- } else {
- watermark = SF_W_MARK_MIMO2;
- }
- sf_cmd->watermark[SF_FULL_ON] = cpu_to_le32(watermark);
-
- for (i = 0; i < SF_NUM_SCENARIO; i++) {
- for (j = 0; j < SF_NUM_TIMEOUT_TYPES; j++) {
- sf_cmd->long_delay_timeouts[i][j] =
- cpu_to_le32(SF_LONG_DELAY_AGING_TIMER);
- }
- }
-
- if (sta || IWL_UCODE_API(mvm->fw->ucode_ver) < 13) {
- BUILD_BUG_ON(sizeof(sf_full_timeout) !=
- sizeof(__le32) * SF_NUM_SCENARIO *
- SF_NUM_TIMEOUT_TYPES);
-
- memcpy(sf_cmd->full_on_timeouts, sf_full_timeout,
- sizeof(sf_full_timeout));
- } else {
- BUILD_BUG_ON(sizeof(sf_full_timeout_def) !=
- sizeof(__le32) * SF_NUM_SCENARIO *
- SF_NUM_TIMEOUT_TYPES);
-
- memcpy(sf_cmd->full_on_timeouts, sf_full_timeout_def,
- sizeof(sf_full_timeout_def));
- }
-
-}
-
-static int iwl_mvm_sf_config(struct iwl_mvm *mvm, u8 sta_id,
- enum iwl_sf_state new_state)
-{
- struct iwl_sf_cfg_cmd sf_cmd = {
- .state = cpu_to_le32(SF_FULL_ON),
- };
- struct ieee80211_sta *sta;
- int ret = 0;
-
- if (IWL_UCODE_API(mvm->fw->ucode_ver) < 13)
- sf_cmd.state = cpu_to_le32(new_state);
-
- if (mvm->cfg->disable_dummy_notification)
- sf_cmd.state |= cpu_to_le32(SF_CFG_DUMMY_NOTIF_OFF);
-
- /*
- * If an associated AP sta changed its antenna configuration, the state
- * will remain FULL_ON but SF parameters need to be reconsidered.
- */
- if (new_state != SF_FULL_ON && mvm->sf_state == new_state)
- return 0;
-
- switch (new_state) {
- case SF_UNINIT:
- if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 13)
- iwl_mvm_fill_sf_command(mvm, &sf_cmd, NULL);
- break;
- case SF_FULL_ON:
- if (sta_id == IWL_MVM_STATION_COUNT) {
- IWL_ERR(mvm,
- "No station: Cannot switch SF to FULL_ON\n");
- return -EINVAL;
- }
- rcu_read_lock();
- sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
- if (IS_ERR_OR_NULL(sta)) {
- IWL_ERR(mvm, "Invalid station id\n");
- rcu_read_unlock();
- return -EINVAL;
- }
- iwl_mvm_fill_sf_command(mvm, &sf_cmd, sta);
- rcu_read_unlock();
- break;
- case SF_INIT_OFF:
- iwl_mvm_fill_sf_command(mvm, &sf_cmd, NULL);
- break;
- default:
- WARN_ONCE(1, "Invalid state: %d. not sending Smart Fifo cmd\n",
- new_state);
- return -EINVAL;
- }
-
- ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_SF_CFG_CMD, CMD_ASYNC,
- sizeof(sf_cmd), &sf_cmd);
- if (!ret)
- mvm->sf_state = new_state;
-
- return ret;
-}
-
-/*
- * Update Smart fifo:
- * Count bound interfaces that are not to be removed, ignoring p2p devices,
- * and set new state accordingly.
- */
-int iwl_mvm_sf_update(struct iwl_mvm *mvm, struct ieee80211_vif *changed_vif,
- bool remove_vif)
-{
- enum iwl_sf_state new_state;
- u8 sta_id = IWL_MVM_STATION_COUNT;
- struct iwl_mvm_vif *mvmvif = NULL;
- struct iwl_mvm_active_iface_iterator_data data = {
- .ignore_vif = changed_vif,
- .sta_vif_state = SF_UNINIT,
- .sta_vif_ap_sta_id = IWL_MVM_STATION_COUNT,
- };
-
- /*
- * Ignore the call if we are in HW Restart flow, or if the handled
- * vif is a p2p device.
- */
- if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
- (changed_vif && changed_vif->type == NL80211_IFTYPE_P2P_DEVICE))
- return 0;
-
- ieee80211_iterate_active_interfaces_atomic(mvm->hw,
- IEEE80211_IFACE_ITER_NORMAL,
- iwl_mvm_bound_iface_iterator,
- &data);
-
- /* If changed_vif exists and is not to be removed, add to the count */
- if (changed_vif && !remove_vif)
- data.num_active_macs++;
-
- switch (data.num_active_macs) {
- case 0:
- /* If there are no active macs - change state to SF_INIT_OFF */
- new_state = SF_INIT_OFF;
- break;
- case 1:
- if (remove_vif) {
- /* The one active mac left is of type station
- * and we filled the relevant data during iteration
- */
- new_state = data.sta_vif_state;
- sta_id = data.sta_vif_ap_sta_id;
- } else {
- if (WARN_ON(!changed_vif))
- return -EINVAL;
- if (changed_vif->type != NL80211_IFTYPE_STATION) {
- new_state = SF_UNINIT;
- } else if (changed_vif->bss_conf.assoc &&
- changed_vif->bss_conf.dtim_period) {
- mvmvif = iwl_mvm_vif_from_mac80211(changed_vif);
- sta_id = mvmvif->ap_sta_id;
- new_state = SF_FULL_ON;
- } else {
- new_state = SF_INIT_OFF;
- }
- }
- break;
- default:
- /* If there are multiple active macs - change to SF_UNINIT */
- new_state = SF_UNINIT;
- }
- return iwl_mvm_sf_config(mvm, sta_id, new_state);
-}
projects / cascardo / linux.git / blobdiff