From 268712dc3b344f3a835211e5846e6ebfd7a13cbd Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Thu, 7 Dec 2023 04:50:10 +0200 Subject: wifi: iwlwifi: mvm: add a debugfs hook to clear the monitor data This can be used by the user space when it wants to clear the data we collected so far for privacy reasons. Signed-off-by: Emmanuel Grumbach Signed-off-by: Miri Korenblit Link: https://msgid.link/20231207044813.d5e97d5ec0d9.I7a5e836e6109e1fce7e6301dba8d1f28e60a5440@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 10 ++++++++++ drivers/net/wireless/intel/iwlwifi/fw/dbg.h | 1 + drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 2 +- drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h | 1 + drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c | 16 ++++++++++++++++ 5 files changed, 29 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c index 7ee9b7c8a3ab..f6e399d1e95c 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -3395,3 +3395,13 @@ void iwl_fw_disable_dbg_asserts(struct iwl_fw_runtime *fwrt) iwl_trans_send_cmd(fwrt->trans, &hcmd); } IWL_EXPORT_SYMBOL(iwl_fw_disable_dbg_asserts); + +void iwl_fw_dbg_clear_monitor_buf(struct iwl_fw_runtime *fwrt) +{ + struct iwl_fw_dbg_params params = {0}; + + iwl_fw_dbg_stop_sync(fwrt); + iwl_dbg_tlv_init_cfg(fwrt); + iwl_fw_dbg_stop_restart_recording(fwrt, ¶ms, false); +} +IWL_EXPORT_SYMBOL(iwl_fw_dbg_clear_monitor_buf); diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.h b/drivers/net/wireless/intel/iwlwifi/fw/dbg.h index 66b233250c7c..eb38c686b5cb 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.h @@ -330,6 +330,7 @@ void iwl_send_dbg_dump_complete_cmd(struct iwl_fw_runtime *fwrt, u32 timepoint, u32 timepoint_data); void iwl_fw_disable_dbg_asserts(struct iwl_fw_runtime *fwrt); +void iwl_fw_dbg_clear_monitor_buf(struct iwl_fw_runtime *fwrt); #define IWL_FW_CHECK_FAILED(_obj, _fmt, ...) \ IWL_ERR_LIMIT(_obj, _fmt, __VA_ARGS__) diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c index b658cf228fbe..3b14f6476743 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c @@ -1274,7 +1274,7 @@ iwl_dbg_tlv_tp_trigger(struct iwl_fw_runtime *fwrt, bool sync, return 0; } -static void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt) +void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt) { enum iwl_fw_ini_buffer_location *ini_dest = &fwrt->trans->dbg.ini_dest; int ret, i; diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h index 06fb7d665390..7ed6329fd8ca 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h @@ -57,6 +57,7 @@ void _iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt, enum iwl_fw_ini_time_point tp_id, union iwl_dbg_tlv_tp_data *tp_data, bool sync); +void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt); static inline void iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt, enum iwl_fw_ini_time_point tp_id, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c index 329c545f65fd..e016fce7ab24 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c @@ -1714,6 +1714,20 @@ static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct iwl_mvm *mvm, return count; } +static ssize_t iwl_dbgfs_fw_dbg_clear_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) + return -EOPNOTSUPP; + + mutex_lock(&mvm->mutex); + iwl_fw_dbg_clear_monitor_buf(&mvm->fwrt); + mutex_unlock(&mvm->mutex); + + return count; +} + static ssize_t iwl_dbgfs_dbg_time_point_write(struct iwl_mvm *mvm, char *buf, size_t count, loff_t *ppos) @@ -2166,6 +2180,7 @@ MVM_DEBUGFS_WRITE_FILE_OPS(bt_force_ant, 10); MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8); MVM_DEBUGFS_READ_WRITE_FILE_OPS(fw_dbg_conf, 8); MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 64); +MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_clear, 64); MVM_DEBUGFS_WRITE_FILE_OPS(dbg_time_point, 64); MVM_DEBUGFS_WRITE_FILE_OPS(indirection_tbl, (IWL_RSS_INDIRECTION_TABLE_SIZE * 2)); @@ -2372,6 +2387,7 @@ void iwl_mvm_dbgfs_register(struct iwl_mvm *mvm) MVM_DEBUGFS_ADD_FILE(prph_reg, mvm->debugfs_dir, 0600); MVM_DEBUGFS_ADD_FILE(fw_dbg_conf, mvm->debugfs_dir, 0600); MVM_DEBUGFS_ADD_FILE(fw_dbg_collect, mvm->debugfs_dir, 0200); + MVM_DEBUGFS_ADD_FILE(fw_dbg_clear, mvm->debugfs_dir, 0200); MVM_DEBUGFS_ADD_FILE(dbg_time_point, mvm->debugfs_dir, 0200); MVM_DEBUGFS_ADD_FILE(send_echo_cmd, mvm->debugfs_dir, 0200); MVM_DEBUGFS_ADD_FILE(indirection_tbl, mvm->debugfs_dir, 0200); -- cgit