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iwlwifi: add a debugfs hook for LQM

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Add debugfs entry named lqm_send_cmd for kicking a
measurement. This hook takes the duration and the timeout
as parameter.

Signed-off-by: Aviya Erenfeld <aviya.erenfeld@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Aviya Erenfeld 2016-03-13 15:58:59 +02:00 • committed by Emmanuel Grumbach
parent 03098268a3
commit dedfc0f3db
1 changed files with 85 additions and 0 deletions
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85
drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
View file

@ -1425,6 +1425,89 @@ static ssize_t iwl_dbgfs_quota_min_read(struct file *file,
return simple_read_from_buffer(user_buf, count, ppos, buf, len); return simple_read_from_buffer(user_buf, count, ppos, buf, len);
} }
static const char * const chanwidths[] = {
[NL80211_CHAN_WIDTH_20_NOHT] = "noht",
[NL80211_CHAN_WIDTH_20] = "ht20",
[NL80211_CHAN_WIDTH_40] = "ht40",
[NL80211_CHAN_WIDTH_80] = "vht80",
[NL80211_CHAN_WIDTH_80P80] = "vht80p80",
[NL80211_CHAN_WIDTH_160] = "vht160",
};
static bool iwl_mvm_lqm_notif_wait(struct iwl_notif_wait_data *notif_wait,
struct iwl_rx_packet *pkt, void *data)
{
struct ieee80211_vif *vif = data;
struct iwl_mvm *mvm =
container_of(notif_wait, struct iwl_mvm, notif_wait);
struct iwl_link_qual_msrmnt_notif *report = (void *)pkt->data;
u32 num_of_stations = le32_to_cpu(report->number_of_stations);
int i;
IWL_INFO(mvm, "LQM report:\n");
IWL_INFO(mvm, "\tstatus: %d\n", report->status);
IWL_INFO(mvm, "\tmacID: %d\n", le32_to_cpu(report->mac_id));
IWL_INFO(mvm, "\ttx_frame_dropped: %d\n",
le32_to_cpu(report->tx_frame_dropped));
IWL_INFO(mvm, "\ttime_in_measurement_window: %d us\n",
le32_to_cpu(report->time_in_measurement_window));
IWL_INFO(mvm, "\ttotal_air_time_other_stations: %d\n",
le32_to_cpu(report->total_air_time_other_stations));
IWL_INFO(mvm, "\tchannel_freq: %d\n",
vif->bss_conf.chandef.center_freq1);
IWL_INFO(mvm, "\tchannel_width: %s\n",
chanwidths[vif->bss_conf.chandef.width]);
IWL_INFO(mvm, "\tnumber_of_stations: %d\n", num_of_stations);
for (i = 0; i < num_of_stations; i++)
IWL_INFO(mvm, "\t\tsta[%d]: %d\n", i,
report->frequent_stations_air_time[i]);
return true;
}
static ssize_t iwl_dbgfs_lqm_send_cmd_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_notification_wait wait_lqm_notif;
static u16 lqm_notif[] = {
WIDE_ID(MAC_CONF_GROUP,
LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF)
};
int err;
u32 duration;
u32 timeout;
if (sscanf(buf, "%d,%d", &duration, &timeout) != 2)
return -EINVAL;
iwl_init_notification_wait(&mvm->notif_wait, &wait_lqm_notif,
lqm_notif, ARRAY_SIZE(lqm_notif),
iwl_mvm_lqm_notif_wait, vif);
mutex_lock(&mvm->mutex);
err = iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_START_MEASUREMENT,
duration, timeout);
mutex_unlock(&mvm->mutex);
if (err) {
IWL_ERR(mvm, "Failed to send lqm cmdf(err=%d)\n", err);
iwl_remove_notification(&mvm->notif_wait, &wait_lqm_notif);
return err;
}
/* wait for 2 * timeout (safety guard) and convert to jiffies*/
timeout = msecs_to_jiffies((timeout * 2) / 1000);
err = iwl_wait_notification(&mvm->notif_wait, &wait_lqm_notif,
timeout);
if (err)
IWL_ERR(mvm, "Getting lqm notif timed out\n");
return count;
}
#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \ #define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
_MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif) _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct ieee80211_vif)
#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \ #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
@ -1449,6 +1532,7 @@ MVM_DEBUGFS_READ_WRITE_FILE_OPS(tof_range_abort, 32);
MVM_DEBUGFS_READ_FILE_OPS(tof_range_response); MVM_DEBUGFS_READ_FILE_OPS(tof_range_response);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(tof_responder_params, 32); MVM_DEBUGFS_READ_WRITE_FILE_OPS(tof_responder_params, 32);
MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32); MVM_DEBUGFS_READ_WRITE_FILE_OPS(quota_min, 32);
MVM_DEBUGFS_WRITE_FILE_OPS(lqm_send_cmd, 64);
void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif) void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{ {
@ -1488,6 +1572,7 @@ void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
S_IRUSR | S_IWUSR); S_IRUSR | S_IWUSR);
MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir, MVM_DEBUGFS_ADD_FILE_VIF(quota_min, mvmvif->dbgfs_dir,
S_IRUSR | S_IWUSR); S_IRUSR | S_IWUSR);
MVM_DEBUGFS_ADD_FILE_VIF(lqm_send_cmd, mvmvif->dbgfs_dir, S_IWUSR);
if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p && if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
mvmvif == mvm->bf_allowed_vif) mvmvif == mvm->bf_allowed_vif)