/******************************************************************************
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called COPYING.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
#include "mvm.h"
#include "debugfs.h"
static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
enum iwl_dbgfs_pm_mask param, int val)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm;
dbgfs_pm->mask |= param;
switch (param) {
case MVM_DEBUGFS_PM_KEEP_ALIVE: {
struct ieee80211_hw *hw = mvm->hw;
int dtimper = hw->conf.ps_dtim_period ?: 1;
int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val);
if (val * MSEC_PER_SEC < 3 * dtimper_msec)
IWL_WARN(mvm,
"debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n",
val * MSEC_PER_SEC, 3 * dtimper_msec);
dbgfs_pm->keep_alive_seconds = val;
break;
}
case MVM_DEBUGFS_PM_SKIP_OVER_DTIM:
IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n",
val ? "enabled" : "disabled");
dbgfs_pm->skip_over_dtim = val;
break;
case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS:
IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val);
dbgfs_pm->skip_dtim_periods = val;
break;
case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT:
IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val);
dbgfs_pm->rx_data_timeout = val;
break;
case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT:
IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val);
dbgfs_pm->tx_data_timeout = val;
break;
case MVM_DEBUGFS_PM_DISABLE_POWER_OFF:
IWL_DEBUG_POWER(mvm, "disable_power_off=%d\n", val);
dbgfs_pm->disable_power_off = val;
break;
case MVM_DEBUGFS_PM_LPRX_ENA:
IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled");
dbgfs_pm->lprx_ena = val;
break;
case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD:
IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val);
dbgfs_pm->lprx_rssi_threshold = val;
break;
case MVM_DEBUGFS_PM_SNOOZE_ENABLE:
IWL_DEBUG_POWER(mvm, "snooze_enable=%d\n", val);
dbgfs_pm->snooze_ena = val;
break;
case MVM_DEBUGFS_PM_UAPSD_MISBEHAVING:
IWL_DEBUG_POWER(mvm, "uapsd_misbehaving_enable=%d\n", val);
dbgfs_pm->uapsd_misbehaving = val;
break;
}
}
static ssize_t iwl_dbgfs_pm_params_write(struct ieee80211_vif *vif, char *buf,
size_t count, loff_t *ppos)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = mvmvif->mvm;
enum iwl_dbgfs_pm_mask param;
int val, ret;
if (!strncmp("keep_alive=", buf, 11)) {
if (sscanf(buf + 11, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_KEEP_ALIVE;
} else if (!strncmp("skip_over_dtim=", buf, 15)) {
if (sscanf(buf + 15, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM;
} else if (!strncmp("skip_dtim_periods=", buf, 18)) {
if (sscanf(buf + 18, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS;
} else if (!strncmp("rx_data_timeout=", buf, 16)) {
if (sscanf(buf + 16, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT;
} else if (!strncmp("tx_data_timeout=", buf, 16)) {
if (sscanf(buf + 16, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT;
} else if (!strncmp("disable_power_off=", buf, 18) &&
!(mvm->fw->ucode_capa.flags &
IWL_UCODE_TLV_FLAGS_DEVICE_PS_CMD)) {
if (sscanf(buf + 18, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_DISABLE_POWER_OFF;
} else if (!strncmp("lprx=", buf, 5)) {
if (sscanf(buf + 5, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_LPRX_ENA;
} else if (!strncmp("lprx_rssi_threshold=", buf, 20)) {
if (sscanf(buf + 20, "%d", &val) != 1)
return -EINVAL;
if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val <
POWER_LPRX_RSSI_THRESHOLD_MIN)
return -EINVAL;
param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD;
} else if (!strncmp("snooze_enable=", buf, 14)) {
if (sscanf(buf + 14, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_SNOOZE_ENABLE;
} else if (!strncmp("uapsd_misbehaving=", buf, 18)) {
if (sscanf(buf + 18, "%d", &val) != 1)
return -EINVAL;
param = MVM_DEBUGFS_PM_UAPSD_MISBEHAVING;
} else {
return -EINVAL;
}
mutex_lock(&mvm->mutex);
iwl_dbgfs_update_pm(mvm, vif, param, val);
ret = iwl_mvm_power_update_mac(mvm, vif);
mutex_unlock(&mvm->mutex);
return ret ?: count;
}
static ssize_t iwl_dbgfs_pm_params_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_vif *vif = file->private_data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = mvmvif->mvm;
char buf[512];
int bufsz = sizeof(buf);
int pos;
pos = iwl_mvm_power_mac_dbgfs_read(mvm, vif, buf, bufsz);
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t iwl_dbgfs_mac_params_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_vif *vif = file->private_data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = mvmvif->mvm;
u8 ap_sta_id;
struct ieee80211_chanctx_conf *chanctx_conf;
char buf[512];
int bufsz = sizeof(buf);
int pos = 0;
int i;
mutex_lock(&mvm->mutex);
ap_sta_id = mvmvif->ap_sta_id;
switch (ieee80211_vif_type_p2p(vif)) {
case NL80211_IFTYPE_ADHOC:
pos += scnprintf(buf+pos, bufsz-pos, "type: ibss\n");
break;
case NL80211_IFTYPE_STATION:
pos += scnprintf(buf+pos, bufsz-pos, "type: bss\n");
break;
case NL80211_IFTYPE_AP:
pos += scnprintf(buf+pos, bufsz-pos, "type: ap\n");
break;
case NL80211_IFTYPE_P2P_CLIENT:
pos += scnprintf(buf+pos, bufsz-pos, "type: p2p client\n");
break;
case NL80211_IFTYPE_P2P_GO:
pos += scnprintf(buf+pos, bufsz-pos, "type: p2p go\n");
break;
case NL80211_IFTYPE_P2P_DEVICE:
pos += scnprintf(buf+pos, bufsz-pos, "type: p2p dev\n");
break;
default:
break;
}
pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n",
mvmvif->id, mvmvif->color);
pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n",
vif->bss_conf.bssid);
pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n");
for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++)
pos += scnprintf(buf+pos, bufsz-pos,
"\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n",
i, mvmvif->queue_params[i].txop,
mvmvif->queue_params[i].cw_min,
mvmvif->queue_params[i].cw_max,
mvmvif->queue_params[i].aifs,
mvmvif->queue_params[i].uapsd);
if (vif->type == NL80211_IFTYPE_STATION &&
ap_sta_id != IWL_MVM_STATION_COUNT) {
struct ieee80211_sta *sta;
sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id],
lockdep_is_held(&mvm->mutex));
if (!IS_ERR_OR_NULL(sta)) {
struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
pos += scnprintf(buf+pos, bufsz-pos,
"ap_sta_id %d - reduced Tx power %d force %d\n",
ap_sta_id,
mvm_sta->bt_reduced_txpower,
mvm_sta->bt_reduced_txpower_dbg);
}
}
rcu_read_lock();
chanctx_conf = rcu_dereference(vif->chanctx_conf);
if (chanctx_conf)
pos += scnprintf(buf+pos, bufsz-pos,
"idle rx chains %d, active rx chains: %d\n",
chanctx_conf->rx_chains_static,
chanctx_conf->rx_chains_dynamic);
rcu_read_unlock();
mutex_unlock(&mvm->mutex);
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t iwl_dbgfs_reduced_txp_write(struct ieee80211_vif *vif,
char *buf, size_t count,
loff_t *ppos)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = mvmvif->mvm;
struct iwl_mvm_sta *mvmsta;
bool reduced_tx_power;
int ret;
if (mvmvif->ap_sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))
return -ENOTCONN;
if (strtobool(buf, &reduced_tx_power) != 0)
return -EINVAL;
mutex_lock(&mvm->mutex);
mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
if (IS_ERR_OR_NULL(mvmsta)) {
mutex_unlock(&mvm->mutex);
return -ENOTCONN;
}
mvmsta->bt_reduced_txpower_dbg = false;
ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
reduced_tx_power);
if (!ret)
mvmsta->bt_reduced_txpower_dbg = true;
mutex_unlock(&mvm->mutex);
return ret ? : count;
}
static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif,
enum iwl_dbgfs_bf_mask param, int value)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
dbgfs_bf->mask |= param;
switch (param) {
case MVM_DEBUGFS_BF_ENERGY_DELTA:
dbgfs_bf->bf_energy_delta = value;
break;
case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA:
dbgfs_bf->bf_roaming_energy_delta = value;
break;
case MVM_DEBUGFS_BF_ROAMING_STATE:
dbgfs_bf->bf_roaming_state = value;
break;
case MVM_DEBUGFS_BF_TEMP_THRESHOLD:
dbgfs_bf->bf_temp_threshold = value;
break;
case MVM_DEBUGFS_BF_TEMP_FAST_FILTER:
dbgfs_bf->bf_temp_fast_filter = value;
break;
case MVM_DEBUGFS_BF_TEMP_SLOW_FILTER:
dbgfs_bf->bf_temp_slow_filter = value;
break;
case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER:
dbgfs_bf->bf_enable_beacon_filter = value;
break;
case MVM_DEBUGFS_BF_DEBUG_FLAG:
dbgfs_bf->bf_debug_flag = value;
break;
case MVM_DEBUGFS_BF_ESCAPE_TIMER:
dbgfs_bf->bf_escape_timer = value;
break;
case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT:
dbgfs_bf->ba_enable_beacon_abort = value;
break;
case MVM_DEBUGFS_BA_ESCAPE_TIMER:
dbgfs_bf->ba_escape_timer = value;
break;
}
}
static ssize_t iwl_dbgfs_bf_params_write(struct ieee80211_vif *vif, char *buf,
size_t count, loff_t *ppos)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = mvmvif->mvm;
enum iwl_dbgfs_bf_mask param;
int value, ret = 0;
if (!strncmp("bf_energy_delta=", buf, 16)) {
if (sscanf(buf+16, "%d", &value) != 1)
return -EINVAL;
if (value < IWL_BF_ENERGY_DELTA_MIN ||
value > IWL_BF_ENERGY_DELTA_MAX)
return -EINVAL;
param = MVM_DEBUGFS_BF_ENERGY_DELTA;
} else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) {
if (sscanf(buf+24, "%d", &value) != 1)
return -EINVAL;
if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN ||
value > IWL_BF_ROAMING_ENERGY_DELTA_MAX)
return -EINVAL;
param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA;
} else if (!strncmp("bf_roaming_state=", buf, 17)) {
if (sscanf(buf+17, "%d", &value) != 1)
return -EINVAL;
if (value < IWL_BF_ROAMING_STATE_MIN ||
value > IWL_BF_ROAMING_STATE_MAX)
return -EINVAL;
param = MVM_DEBUGFS_BF_ROAMING_STATE;
} else if (!strncmp("bf_temp_threshold=", buf, 18)) {
if (sscanf(buf+18, "%d", &value) != 1)
return -EINVAL;
if (value < IWL_BF_TEMP_THRESHOLD_MIN ||
value > IWL_BF_TEMP_THRESHOLD_MAX)
return -EINVAL;
param = MVM_DEBUGFS_BF_TEMP_THRESHOLD;
} else if (!strncmp("bf_temp_fast_filter=", buf, 20)) {
if (sscanf(buf+20, "%d", &value) != 1)
return -EINVAL;
if (value < IWL_BF_TEMP_FAST_FILTER_MIN ||
value > IWL_BF_TEMP_FAST_FILTER_MAX)
return -EINVAL;
param = MVM_DEBUGFS_BF_TEMP_FAST_FILTER;
} else if (!strncmp("bf_temp_slow_filter=", buf, 20)) {
if (sscanf(buf+20, "%d", &value) != 1)
return -EINVAL;
if (value < IWL_BF_TEMP_SLOW_FILTER_MIN ||
value > IWL_BF_TEMP_SLOW_FILTER_MAX)
return -EINVAL;
param = MVM_DEBUGFS_BF_TEMP_SLOW_FILTER;
} else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) {
if (sscanf(buf+24, "%d", &value) != 1)
return -EINVAL;
if (value < 0 || value > 1)
return -EINVAL;
param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER;
} else if (!strncmp("bf_debug_flag=", buf, 14)) {
if (sscanf(buf+14, "%d", &value) != 1)
return -EINVAL;
if (value < 0 || value > 1)
return -EINVAL;
param = MVM_DEBUGFS_BF_DEBUG_FLAG;
} else if (!strncmp("bf_escape_timer=", buf, 16)) {
if (sscanf(buf+16, "%d", &value) != 1)
return -EINVAL;
if (value < IWL_BF_ESCAPE_TIMER_MIN ||
value > IWL_BF_ESCAPE_TIMER_MAX)
return -EINVAL;
param = MVM_DEBUGFS_BF_ESCAPE_TIMER;
} else if (!strncmp("ba_escape_timer=", buf, 16)) {
if (sscanf(buf+16, "%d", &value) != 1)
return -EINVAL;
if (value < IWL_BA_ESCAPE_TIMER_MIN ||
value > IWL_BA_ESCAPE_TIMER_MAX)
return -EINVAL;
param = MVM_DEBUGFS_BA_ESCAPE_TIMER;
} else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) {
if (sscanf(buf+23, "%d", &value) != 1)
return -EINVAL;
if (value < 0 || value > 1)
return -EINVAL;
param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT;
} else {
return -EINVAL;
}
mutex_lock(&mvm->mutex);
iwl_dbgfs_update_bf(vif, param, value);
if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value)
ret = iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
else
ret = iwl_mvm_enable_beacon_filter(mvm, vif, CMD_SYNC);
mutex_unlock(&mvm->mutex);
return ret ?: count;
}
static ssize_t iwl_dbgfs_bf_params_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_vif *vif = file->private_data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
char buf[256];
int pos = 0;
const size_t bufsz = sizeof(buf);
struct iwl_beacon_filter_cmd cmd = {
IWL_BF_CMD_CONFIG_DEFAULTS,
.bf_enable_beacon_filter =
cpu_to_le32(IWL_BF_ENABLE_BEACON_FILTER_DEFAULT),
.ba_enable_beacon_abort =
cpu_to_le32(IWL_BA_ENABLE_BEACON_ABORT_DEFAULT),
};
iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd);
if (mvmvif->bf_data.bf_enabled)
cmd.bf_enable_beacon_filter = cpu_to_le32(1);
else
cmd.bf_enable_beacon_filter = 0;
pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n",
le32_to_cpu(cmd.bf_energy_delta));
pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n",
le32_to_cpu(cmd.bf_roaming_energy_delta));
pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n",
le32_to_cpu(cmd.bf_roaming_state));
pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_threshold = %d\n",
le32_to_cpu(cmd.bf_temp_threshold));
pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_fast_filter = %d\n",
le32_to_cpu(cmd.bf_temp_fast_filter));
pos += scnprintf(buf+pos, bufsz-pos, "bf_temp_slow_filter = %d\n",
le32_to_cpu(cmd.bf_temp_slow_filter));
pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n",
le32_to_cpu(cmd.bf_enable_beacon_filter));
pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n",
le32_to_cpu(cmd.bf_debug_flag));
pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n",
le32_to_cpu(cmd.bf_escape_timer));
pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n",
le32_to_cpu(cmd.ba_escape_timer));
pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n",
le32_to_cpu(cmd.ba_enable_beacon_abort));
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t iwl_dbgfs_low_latency_write(struct ieee80211_vif *vif, char *buf,
size_t count, loff_t *ppos)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = mvmvif->mvm;
u8 value;
int ret;
ret = kstrtou8(buf, 0, &value);
if (ret)
return ret;
if (value > 1)
return -EINVAL;
mutex_lock(&mvm->mutex);
iwl_mvm_update_low_latency(mvm, vif, value);
mutex_unlock(&mvm->mutex);
return count;
}
static ssize_t iwl_dbgfs_low_latency_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_vif *vif = file->private_data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
char buf[3];
buf[0] = mvmvif->low_latency ? '1' : '0';
buf[1] = '\n';
buf[2] = '\0';
return simple_read_from_buffer(user_buf, count, ppos, buf, sizeof(buf));
}
#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
_MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
_MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
#define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \
if (!debugfs_create_file(#name, mode, parent, vif, \
&iwl_dbgfs_##name##_ops)) \
goto err; \
} while (0)
MVM_DEBUGFS_READ_FILE_OPS(mac_params);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params, 32);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params, 256);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 10);
MVM_DEBUGFS_WRITE_FILE_OPS(reduced_txp, 10);
void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct dentry *dbgfs_dir = vif->debugfs_dir;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
char buf[100];
/*
* Check if debugfs directory already exist before creating it.
* This may happen when, for example, resetting hw or suspend-resume
*/
if (!dbgfs_dir || mvmvif->dbgfs_dir)
return;
mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir);
mvmvif->mvm = mvm;
if (!mvmvif->dbgfs_dir) {
IWL_ERR(mvm, "Failed to create debugfs directory under %s\n",
dbgfs_dir->d_name.name);
return;
}
if ((mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT) &&
iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM &&
((vif->type == NL80211_IFTYPE_STATION && !vif->p2p) ||
(vif->type == NL80211_IFTYPE_STATION && vif->p2p &&
mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_DCM)))
MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR |
S_IRUSR);
MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, S_IRUSR);
MVM_DEBUGFS_ADD_FILE_VIF(reduced_txp, mvmvif->dbgfs_dir, S_IWUSR);
MVM_DEBUGFS_ADD_FILE_VIF(low_latency, mvmvif->dbgfs_dir,
S_IRUSR | S_IWUSR);
if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
mvmvif == mvm->bf_allowed_vif)
MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir,
S_IRUSR | S_IWUSR);
/*
* Create symlink for convenience pointing to interface specific
* debugfs entries for the driver. For example, under
* /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/
* find
* netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
*/
snprintf(buf, 100, "../../../%s/%s/%s/%s",
dbgfs_dir->d_parent->d_parent->d_name.name,
dbgfs_dir->d_parent->d_name.name,
dbgfs_dir->d_name.name,
mvmvif->dbgfs_dir->d_name.name);
mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
mvm->debugfs_dir, buf);
if (!mvmvif->dbgfs_slink)
IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n",
dbgfs_dir->d_name.name);
return;
err:
IWL_ERR(mvm, "Can't create debugfs entity\n");
}
void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
debugfs_remove(mvmvif->dbgfs_slink);
mvmvif->dbgfs_slink = NULL;
debugfs_remove_recursive(mvmvif->dbgfs_dir);
mvmvif->dbgfs_dir = NULL;
}
