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qcacld-3.0: Add ini to apply RSSI delta for 6 GHz roam

Browse source 
Introduce a new ini parameter, to apply an RSSI penalty
to non-6 GHz candidate APs during roaming from 6 GHz AP.
This ensures roaming to non-6 GHz AP occurs only if it
offers significantly better signal quality.

Change-Id: I02482c37c56c44d3d1804282abd09deaefb8eed3
CRs-Fixed: 4141300
This commit is contained in:
Eswar Kesavalu 2025-05-02 15:56:44 +05:30 • committed by Ravindra Konda
commit 1879db349b
8 changed files with 125 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

3
components/mlme/core/src/wlan_mlme_main.c
View file

@ -1,6 +1,7 @@
/*
* Copyright (c) 2018-2020 The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -1846,6 +1847,8 @@ static void mlme_init_lfr_cfg(struct wlan_objmgr_psoc *psoc,
cfg_get(psoc, CFG_LFR3_ROAM_PREAUTH_RETRY_COUNT);
lfr->roam_rssi_diff = cfg_get(psoc, CFG_LFR_ROAM_RSSI_DIFF);
lfr->roam_rssi_diff_6ghz = cfg_get(psoc, CFG_LFR_ROAM_RSSI_DIFF_6GHZ);
lfr->roam_rssi_delta_6ghz_to_non_6ghz =
cfg_get(psoc, CFG_LFR_ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ);
lfr->bg_rssi_threshold = cfg_get(psoc, CFG_LFR_ROAM_BG_RSSI_TH);
lfr->roam_scan_offload_enabled =
cfg_get(psoc, CFG_LFR_ROAM_SCAN_OFFLOAD_ENABLED);

34
components/mlme/dispatcher/inc/cfg_mlme_lfr.h
View file

@ -1,6 +1,7 @@
/*
* Copyright (c) 2012-2020 The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -1280,6 +1281,38 @@
CFG_VALUE_OR_DEFAULT, \
"Enable 6 GHz roam based on rssi")
/*
* <ini>
* roam_rssi_delta_from_6ghz_to_non_6ghz - Enable roam to Non 6 GHz AP based
* on rssi
* @Min: 0
* @Max: 100
* @Default: 0
*
* This INI is used to decide whether to roam to Non 6 GHz AP or not based on
* RSSI. AP1 is the currently associated AP(6 GHz) and AP2(2.4 GHz / 5 GHz) is
* chosen for roaming. The Roaming will happen only if AP2 has better Signal
* Quality and it has a RSSI better than AP1.
* roam_rssi_delta_from_6ghz_to_non_6ghz is the number of dB units AP2 is
* better than AP1.
*
*
* Related: None
*
* Supported Feature: Roaming
*
* Usage: External
*
* </ini>
*/
#define CFG_LFR_ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ CFG_INI_UINT( \
"roam_rssi_delta_from_6ghz_to_non_6ghz", \
0, \
100, \
0, \
CFG_VALUE_OR_DEFAULT, \
"Enable 6 GHz to non 6 GHz roam based on rssi")
/*
* <ini>
* bg_rssi_threshold - To set RSSI Threshold for BG scan roaming
@ -2930,6 +2963,7 @@
CFG(CFG_LFR_FAST_TRANSITION_ENABLED) \
CFG(CFG_LFR_ROAM_RSSI_DIFF) \
CFG(CFG_LFR_ROAM_RSSI_DIFF_6GHZ) \
CFG(CFG_LFR_ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ) \
CFG(CFG_LFR_ROAM_BG_RSSI_TH) \
CFG(CFG_LFR_ENABLE_WES_MODE) \
CFG(CFG_LFR_ROAM_SCAN_OFFLOAD_ENABLED) \

8
components/mlme/dispatcher/inc/wlan_mlme_public_struct.h
View file

@ -1,6 +1,7 @@
/*
* Copyright (c) 2018-2020 The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -1680,8 +1681,10 @@ struct fw_scan_channels {
* @roam_preauth_no_ack_timeout: Configure the no ack timeout period
* @roam_rssi_diff: Enable roam based on rssi
* @roam_rssi_diff_6ghz: RSSI diff value to be used for roaming to 6 GHz AP.
* @roam_scan_offload_enabled: Enable Roam Scan Offload
* @neighbor_scan_timer_period: Neighbor scan timer period
* @roam_rssi_delta_6ghz_to_non_6ghz: RSSI diff value to be used for
* roaming from 6 GHz to Non 6GHz AP.
* @roam_scan_offload_enabled: Enable Roam Scan Offload
* @neighbor_scan_timer_period: Neighbor scan timer period
* @neighbor_scan_min_timer_period: Min neighbor scan timer period
* @neighbor_lookup_rssi_threshold: Neighbor lookup rssi threshold
* @opportunistic_scan_threshold_diff: Set oppurtunistic threshold diff
@ -1804,6 +1807,7 @@ struct wlan_mlme_lfr_cfg {
uint32_t roam_preauth_no_ack_timeout;
uint8_t roam_rssi_diff;
uint8_t roam_rssi_diff_6ghz;
uint8_t roam_rssi_delta_6ghz_to_non_6ghz;
uint8_t bg_rssi_threshold;
bool roam_scan_offload_enabled;
uint32_t neighbor_scan_timer_period;

50
components/target_if/connection_mgr/src/target_if_cm_roam_offload.c
View file

@ -1,6 +1,7 @@
/*
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -264,6 +265,41 @@ target_if_cm_roam_rssi_diff_6ghz(struct wlan_objmgr_vdev *vdev,
return status;
}
/**
* target_if_cm_roam_rssi_delta_6ghz_to_non_6ghz() - Sends the roam RSSI
* diff value to the FW. This value is used to determine how much better
* the RSSI of the new/roamable non-6 GHz AP must be for roaming.
*
* @vdev: vdev object
* @roam_rssi_delta_6ghz_to_non_6ghz: RSSI diff value to be used for roaming to
* Non 6 GHz AP
*
* Return: QDF_STATUS
*/
static QDF_STATUS
target_if_cm_roam_rssi_delta_6ghz_to_non_6ghz(struct wlan_objmgr_vdev *vdev,
uint8_t roam_rssi_delta_6ghz_to_non_6ghz)
{
QDF_STATUS status = QDF_STATUS_E_FAILURE;
uint8_t vdev_id;
wmi_unified_t wmi_handle;
wmi_handle = target_if_cm_roam_get_wmi_handle_from_vdev(vdev);
if (!wmi_handle)
return status;
vdev_id = wlan_vdev_get_id(vdev);
status = target_if_roam_set_param(
wmi_handle, vdev_id,
WMI_ROAM_PARAM_ROAM_RSSI_PENALTY_FOR_NON_6GHZ_CAND_AP,
roam_rssi_delta_6ghz_to_non_6ghz);
if (QDF_IS_STATUS_ERROR(status))
target_if_err("Failed to set WMI_ROAM_PARAM_ROAM_RSSI_PENALTY_FOR_NON_6GHZ_CAND_AP");
return status;
}
static QDF_STATUS
target_if_cm_roam_scan_offload_rssi_thresh(
wmi_unified_t wmi_handle,
@ -367,6 +403,13 @@ target_if_cm_roam_rssi_diff_6ghz(struct wlan_objmgr_vdev *vdev,
return QDF_STATUS_E_NOSUPPORT;
}
static QDF_STATUS
target_if_cm_roam_rssi_delta_6ghz_to_non_6ghz(struct wlan_objmgr_vdev *vdev,
uint8_t roam_rssi_diff_6ghz)
{
return QDF_STATUS_E_NOSUPPORT;
}
static inline void
target_if_check_hi_rssi_5ghz_support(
wmi_unified_t wmi_handle,
@ -1276,6 +1319,9 @@ target_if_cm_roam_send_start(struct wlan_objmgr_vdev *vdev,
if (req->wlan_roam_rssi_diff_6ghz)
target_if_cm_roam_rssi_diff_6ghz(vdev,
req->wlan_roam_rssi_diff_6ghz);
if (req->wlan_roam_rssi_delta_6ghz_to_non_6ghz)
target_if_cm_roam_rssi_delta_6ghz_to_non_6ghz(
vdev, req->wlan_roam_rssi_delta_6ghz_to_non_6ghz);
/* add other wmi commands */
end:
@ -1516,6 +1562,10 @@ target_if_cm_roam_send_update_config(struct wlan_objmgr_vdev *vdev,
if (req->wlan_roam_rssi_diff_6ghz)
target_if_cm_roam_rssi_diff_6ghz(
vdev, req->wlan_roam_rssi_diff_6ghz);
if (req->wlan_roam_rssi_delta_6ghz_to_non_6ghz)
target_if_cm_roam_rssi_delta_6ghz_to_non_6ghz(
vdev, req->wlan_roam_rssi_delta_6ghz_to_non_6ghz);
}
end:
return status;

8
components/umac/mlme/connection_mgr/core/src/wlan_cm_roam_offload.c
View file

@ -629,6 +629,10 @@ cm_roam_start_req(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
wlan_cm_roam_cfg_get_value(psoc, vdev_id, ROAM_RSSI_DIFF_6GHZ, &temp);
start_req->wlan_roam_rssi_diff_6ghz = temp.uint_value;
wlan_cm_roam_cfg_get_value(psoc, vdev_id,
ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ, &temp);
start_req->wlan_roam_rssi_delta_6ghz_to_non_6ghz = temp.uint_value;
status = wlan_cm_tgt_send_roam_start_req(psoc, vdev_id, start_req);
if (QDF_IS_STATUS_ERROR(status))
mlme_debug("fail to send roam start");
@ -691,6 +695,10 @@ cm_roam_update_config_req(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
wlan_cm_roam_cfg_get_value(psoc, vdev_id, ROAM_RSSI_DIFF_6GHZ, &temp);
update_req->wlan_roam_rssi_diff_6ghz = temp.uint_value;
wlan_cm_roam_cfg_get_value(psoc, vdev_id,
ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ, &temp);
update_req->wlan_roam_rssi_delta_6ghz_to_non_6ghz = temp.uint_value;
status = wlan_cm_tgt_send_roam_update_req(psoc, vdev_id, update_req);
if (QDF_IS_STATUS_ERROR(status))
mlme_debug("fail to send update config");

12
components/umac/mlme/connection_mgr/dispatcher/inc/wlan_cm_roam_public_struct.h
View file

@ -1,6 +1,7 @@
/*
* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -120,12 +121,14 @@
* @BEACON_RSSI_WEIGHT: Beacon Rssi weight parameter
* @HI_RSSI_DELAY_BTW_SCANS: High Rssi delay between scans
* @ROAM_RSSI_DIFF_6GHZ: roam rssi diff for 6 GHz AP
* @ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ: roam rssi diff for Non 6 GHz AP
*/
enum roam_cfg_param {
RSSI_CHANGE_THRESHOLD,
BEACON_RSSI_WEIGHT,
HI_RSSI_DELAY_BTW_SCANS,
ROAM_RSSI_DIFF_6GHZ,
ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ,
};
/**
@ -1206,6 +1209,8 @@ enum roam_rt_stats_params {
* scan only on prior discovery of any 6 GHz support in the environment.
* @wlan_roam_rssi_diff_6ghz: This value is used as to how better the RSSI of
* the new/roamable 6GHz AP should be for roaming.
* @wlan_roam_rssi_delta_6ghz_to_non_6ghz: This value is used as to how better
* the RSSI of the new/roamable non 6GHz AP should be for roaming.
*/
struct wlan_roam_start_config {
struct wlan_roam_offload_scan_rssi_params rssi_params;
@ -1229,6 +1234,7 @@ struct wlan_roam_start_config {
uint8_t wlan_exclude_rm_partial_scan_freq;
uint8_t wlan_roam_full_scan_6ghz_on_disc;
uint8_t wlan_roam_rssi_diff_6ghz;
uint8_t wlan_roam_rssi_delta_6ghz_to_non_6ghz;
/* other wmi cmd structures */
};
@ -1281,6 +1287,8 @@ struct wlan_roam_stop_config {
* scan only on prior discovery of any 6 GHz support in the environment.
* @wlan_roam_rssi_diff_6ghz: This value is used as to how better the RSSI of
* the new/roamable 6GHz AP should be for roaming.
* @wlan_roam_rssi_delta_6ghz_to_non_6ghz: This value is used as to how better
* the RSSI of the new/roamable non 6GHz AP should be for roaming.
*/
struct wlan_roam_update_config {
struct wlan_roam_beacon_miss_cnt beacon_miss_cnt;
@ -1299,6 +1307,7 @@ struct wlan_roam_update_config {
uint8_t wlan_exclude_rm_partial_scan_freq;
uint8_t wlan_roam_full_scan_6ghz_on_disc;
uint8_t wlan_roam_rssi_diff_6ghz;
uint8_t wlan_roam_rssi_delta_6ghz_to_non_6ghz;
};
#if defined(WLAN_FEATURE_HOST_ROAM) || defined(WLAN_FEATURE_ROAM_OFFLOAD)
@ -1522,6 +1531,8 @@ enum roam_fail_params {
* @roam_invoke_fail_reason: One of reason id from enum
* wmi_roam_invoke_status_error in case of forced roam
* @roam_rssi_diff_6ghz: roam rssi diff for 6 GHz AP
* @roam_rssi_delta_6ghz_to_non_6ghz: RSSI Delta value to be used for roaming
* from 6 GHz to Non 6GHz AP.
*/
struct wlan_cm_rso_configs {
uint8_t rescan_rssi_delta;
@ -1532,6 +1543,7 @@ struct wlan_cm_rso_configs {
uint32_t roam_trigger_reason;
uint32_t roam_invoke_fail_reason;
uint8_t roam_rssi_diff_6ghz;
uint8_t roam_rssi_delta_6ghz_to_non_6ghz;
};
/**

9
components/umac/mlme/connection_mgr/dispatcher/src/wlan_cm_roam_api.c
View file

@ -1,6 +1,7 @@
/*
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -519,6 +520,10 @@ QDF_STATUS wlan_cm_roam_cfg_get_value(struct wlan_objmgr_psoc *psoc,
case ROAM_RSSI_DIFF_6GHZ:
dst_config->uint_value = src_config->roam_rssi_diff_6ghz;
break;
case ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ:
dst_config->uint_value =
src_config->roam_rssi_delta_6ghz_to_non_6ghz;
break;
default:
mlme_err("Invalid roam config requested:%d", roam_cfg_type);
status = QDF_STATUS_E_FAILURE;
@ -568,6 +573,10 @@ wlan_cm_roam_cfg_set_value(struct wlan_objmgr_psoc *psoc, uint8_t vdev_id,
case ROAM_RSSI_DIFF_6GHZ:
dst_config->roam_rssi_diff_6ghz = src_config->uint_value;
break;
case ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ:
dst_config->roam_rssi_delta_6ghz_to_non_6ghz =
src_config->uint_value;
break;
default:
mlme_err("Invalid roam config requested:%d", roam_cfg_type);
status = QDF_STATUS_E_FAILURE;

3
core/sme/src/csr/csr_neighbor_roam.c
View file

@ -848,6 +848,9 @@ static void csr_neighbor_roam_info_ctx_init(struct mac_context *mac,
wlan_cm_roam_cfg_set_value(mac->psoc, session_id,
ROAM_RSSI_DIFF_6GHZ, &src_cfg);
src_cfg.uint_value = mac->mlme_cfg->lfr.roam_rssi_delta_6ghz_to_non_6ghz;
wlan_cm_roam_cfg_set_value(mac->psoc, session_id,
ROAM_RSSI_DELTA_6GHZ_TO_NON_6GHZ, &src_cfg);
/*
* Now we can clear the preauthDone that
* was saved as we are connected afresh