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wifi: iwlwifi: mvm: add a debugfs hook to clear the monitor data

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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 <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20231207044813.d5e97d5ec0d9.I7a5e836e6109e1fce7e6301dba8d1f28e60a5440@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2023-12-07 04:50:10 +02:00 committed by Johannes Berg
parent 1261fefa64
commit 268712dc3b
5 changed files with 29 additions and 1 deletions
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10
drivers/net/wireless/intel/iwlwifi/fw/dbg.c
View File

@ -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, &params, false);
}
IWL_EXPORT_SYMBOL(iwl_fw_dbg_clear_monitor_buf);

1
drivers/net/wireless/intel/iwlwifi/fw/dbg.h
View File

@ -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__)

2
drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
View File

@ -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;

1
drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h
View File

@ -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,

16
drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
View File

@ -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);