/****************************************************************************** * * 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 * 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_mode(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_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); 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); else ret = iwl_mvm_enable_beacon_filter(mvm, vif); 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 (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_P2P_PS))) 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; }