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iwlwifi: mvm: support rtt confidence indication 

The range response notification API has changed to add a value that
indicates the confidence of the rtt result.
Support the new API and print the rtt confidence for debug.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Avraham Stern 2019-02-25 15:12:26 +02:00 committed by Luca Coelho
parent e91130cebd
commit 957a67c828
3 changed files with 89 additions and 4 deletions
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79
drivers/net/wireless/intel/iwlwifi/fw/api/location.h
View File

@ -675,7 +675,7 @@ struct iwl_tof_range_rsp_ap_entry_ntfy_v3 {
} __packed; /* LOCATION_RANGE_RSP_AP_ETRY_NTFY_API_S_VER_3 */
/**
* struct iwl_tof_range_rsp_ap_entry_ntfy - AP parameters (response)
* struct iwl_tof_range_rsp_ap_entry_ntfy_v4 - AP parameters (response)
* @bssid: BSSID of the AP
* @measure_status: current APs measurement status, one of
* &enum iwl_tof_entry_status.
@ -705,7 +705,7 @@ struct iwl_tof_range_rsp_ap_entry_ntfy_v3 {
* @papd_calib_output: The result of the tof papd calibration that was injected
* into the algorithm.
*/
struct iwl_tof_range_rsp_ap_entry_ntfy {
struct iwl_tof_range_rsp_ap_entry_ntfy_v4 {
u8 bssid[ETH_ALEN];
u8 measure_status;
u8 measure_bw;
@ -727,6 +727,63 @@ struct iwl_tof_range_rsp_ap_entry_ntfy {
__le32 papd_calib_output;
} __packed; /* LOCATION_RANGE_RSP_AP_ETRY_NTFY_API_S_VER_4 */
/**
* struct iwl_tof_range_rsp_ap_entry_ntfy - AP parameters (response)
* @bssid: BSSID of the AP
* @measure_status: current APs measurement status, one of
* &enum iwl_tof_entry_status.
* @measure_bw: Current AP Bandwidth: 0 20MHz, 1 40MHz, 2 80MHz
* @rtt: The Round Trip Time that took for the last measurement for
* current AP [pSec]
* @rtt_variance: The Variance of the RTT values measured for current AP
* @rtt_spread: The Difference between the maximum and the minimum RTT
* values measured for current AP in the current session [pSec]
* @rssi: RSSI as uploaded in the Channel Estimation notification
* @rssi_spread: The Difference between the maximum and the minimum RSSI values
* measured for current AP in the current session
* @last_burst: 1 if no more FTM sessions are scheduled for this responder
* @refusal_period: refusal period in case of
* @IWL_TOF_ENTRY_RESPONDER_CANNOT_COLABORATE [sec]
* @timestamp: The GP2 Clock [usec] where Channel Estimation notification was
* uploaded by the LMAC
* @start_tsf: measurement start time in TSF of the mac specified in the range
* request
* @rx_rate_n_flags: rate and flags of the last FTM frame received from this
* responder
* @tx_rate_n_flags: rate and flags of the last ack sent to this responder
* @t2t3_initiator: as calculated from the algo in the initiator
* @t1t4_responder: as calculated from the algo in the responder
* @common_calib: Calib val that was used in for this AP measurement
* @specific_calib: val that was used in for this AP measurement
* @papd_calib_output: The result of the tof papd calibration that was injected
* into the algorithm.
* @rttConfidence: a value between 0 - 31 that represents the rtt accuracy.
* @reserved: for alignment
*/
struct iwl_tof_range_rsp_ap_entry_ntfy {
u8 bssid[ETH_ALEN];
u8 measure_status;
u8 measure_bw;
__le32 rtt;
__le32 rtt_variance;
__le32 rtt_spread;
s8 rssi;
u8 rssi_spread;
u8 last_burst;
u8 refusal_period;
__le32 timestamp;
__le32 start_tsf;
__le32 rx_rate_n_flags;
__le32 tx_rate_n_flags;
__le32 t2t3_initiator;
__le32 t1t4_responder;
__le16 common_calib;
__le16 specific_calib;
__le32 papd_calib_output;
u8 rttConfidence;
u8 reserved[3];
} __packed; /* LOCATION_RANGE_RSP_AP_ETRY_NTFY_API_S_VER_5 */
/**
* enum iwl_tof_response_status - tof response status
*
@ -760,6 +817,22 @@ struct iwl_tof_range_rsp_ntfy_v5 {
struct iwl_tof_range_rsp_ap_entry_ntfy_v3 ap[IWL_MVM_TOF_MAX_APS];
} __packed; /* LOCATION_RANGE_RSP_NTFY_API_S_VER_5 */
/**
* struct iwl_tof_range_rsp_ntfy_v6 - ranging response notification
* @request_id: A Token ID of the corresponding Range request
* @num_of_aps: Number of APs results
* @last_report: 1 if no more FTM sessions are scheduled, 0 otherwise.
* @reserved: reserved
* @ap: per-AP data
*/
struct iwl_tof_range_rsp_ntfy_v6 {
u8 request_id;
u8 num_of_aps;
u8 last_report;
u8 reserved;
struct iwl_tof_range_rsp_ap_entry_ntfy_v4 ap[IWL_MVM_TOF_MAX_APS];
} __packed; /* LOCATION_RANGE_RSP_NTFY_API_S_VER_6 */
/**
* struct iwl_tof_range_rsp_ntfy - ranging response notification
* @request_id: A Token ID of the corresponding Range request
@ -774,7 +847,7 @@ struct iwl_tof_range_rsp_ntfy {
u8 last_report;
u8 reserved;
struct iwl_tof_range_rsp_ap_entry_ntfy ap[IWL_MVM_TOF_MAX_APS];
} __packed; /* LOCATION_RANGE_RSP_NTFY_API_S_VER_6 */
} __packed; /* LOCATION_RANGE_RSP_NTFY_API_S_VER_7 */
#define IWL_MVM_TOF_MCSI_BUF_SIZE (245)
/**

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

@ -311,6 +311,7 @@ enum iwl_ucode_tlv_api {
IWL_UCODE_TLV_API_FTM_NEW_RANGE_REQ = (__force iwl_ucode_tlv_api_t)49,
IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS = (__force iwl_ucode_tlv_api_t)50,
IWL_UCODE_TLV_API_MBSSID_HE = (__force iwl_ucode_tlv_api_t)52,
IWL_UCODE_TLV_API_FTM_RTT_ACCURACY = (__force iwl_ucode_tlv_api_t)54,
NUM_IWL_UCODE_TLV_API
#ifdef __CHECKER__

13
drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c
View File

@ -480,6 +480,7 @@ void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_tof_range_rsp_ntfy_v5 *fw_resp_v5 = (void *)pkt->data;
struct iwl_tof_range_rsp_ntfy_v6 *fw_resp_v6 = (void *)pkt->data;
struct iwl_tof_range_rsp_ntfy *fw_resp = (void *)pkt->data;
int i;
bool new_api = fw_has_api(&mvm->fw->ucode_capa,
@ -519,7 +520,12 @@ void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
int peer_idx;
if (new_api) {
fw_ap = &fw_resp->ap[i];
if (fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_FTM_RTT_ACCURACY))
fw_ap = &fw_resp->ap[i];
else
fw_ap = (void *)&fw_resp_v6->ap[i];
result.final = fw_resp->ap[i].last_burst;
} else {
/* the first part is the same for old and new APIs */
@ -588,6 +594,11 @@ void iwl_mvm_ftm_range_resp(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
mvm->ftm_initiator.req,
&result, GFP_KERNEL);
if (fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_FTM_RTT_ACCURACY))
IWL_DEBUG_INFO(mvm, "RTT confidence: %hhu\n",
fw_ap->rttConfidence);
iwl_mvm_debug_range_resp(mvm, i, &result);
}