samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

qcacld-3.0: Allow firmware to auto detect tx bssid

Browse Source 
In the case of of 5 GHz + non-tx 6 GHz MLO connection, the scan entry
generated from the ML-probe might not carry MBSSID information of the
non-tx partner. The RNR of the assoc link will also not be inherited.
Therefore, the mbssid info is not generated for this non-tx 6 GHz scan
entry. In such cases, if there is a vdev restart, host driver sends zero
mac address in trans bssid, leading to issues with connection.

To fix this:
1. Look up the RNR db for the 6 GHz link, and determine if the bss param
corresponding to the bssid is non-tx MBSSID.
2. If it is a non-tx MBSSID and there is no mbssid info in the scan cache,
then configure the tx-bssid as broadcast mac.
3. This allows the firmware to auto-detect the tx bssid from the upcoming
beacons.
4. Also, save the neighbor entries from the beacon/probes received from
the firmware during roam sync and other events to facilitate the look-up.
5. If there is no existing entry for the roamed non-tx link, then caching
the neighbor info from the assoc partner link would store the valid entry
into the rnr db.

Change-Id: Ie5ef03fc8504cd63f6db98d2ce4af7eb5c2d7e00
CRs-Fixed: 3789675
This commit is contained in:
Surya Prakash Sivaraj
2024-04-17 08:47:51 +05:30
committed by Ravindra Konda
parent e151bf3d8b
commit 99ad149bb6
6 changed files with 43 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
components/mlme/core/inc/wlan_mlme_vdev_mgr_interface.h
View File

@@ -1,6 +1,6 @@
/*
* Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@@ -316,12 +316,13 @@ mlme_set_cac_required(struct wlan_objmgr_vdev *vdev, bool val);
* mlme_set_mbssid_info() - save mbssid info
* @vdev: vdev pointer
* @mbssid_info: mbssid info
* @freq: current operating frequency
*
* Return: QDF_STATUS
*/
QDF_STATUS
mlme_set_mbssid_info(struct wlan_objmgr_vdev *vdev,
struct scan_mbssid_info *mbssid_info);
struct scan_mbssid_info *mbssid_info, qdf_freq_t freq);
/**
* mlme_get_mbssid_info() - get mbssid info

34
components/mlme/core/src/wlan_mlme_vdev_mgr_interface.c
View File

@@ -1,6 +1,6 @@
/*
* Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@@ -1349,10 +1349,13 @@ bool mlme_get_cac_required(struct wlan_objmgr_vdev *vdev)
}
QDF_STATUS mlme_set_mbssid_info(struct wlan_objmgr_vdev *vdev,
struct scan_mbssid_info *mbssid_info)
struct scan_mbssid_info *mbssid_info,
qdf_freq_t freq)
{
struct vdev_mlme_obj *vdev_mlme;
struct vdev_mlme_mbss_11ax *mbss_11ax;
struct qdf_mac_addr bssid;
struct qdf_mac_addr bcast_addr = QDF_MAC_ADDR_BCAST_INIT;
vdev_mlme = wlan_vdev_mlme_get_cmpt_obj(vdev);
if (!vdev_mlme) {
@@ -1368,6 +1371,33 @@ QDF_STATUS mlme_set_mbssid_info(struct wlan_objmgr_vdev *vdev,
qdf_mem_copy(mbss_11ax->non_trans_bssid,
mbssid_info->non_trans_bssid, QDF_MAC_ADDR_SIZE);
qdf_mem_copy(&bssid.bytes, vdev_mlme->mgmt.generic.bssid,
QDF_MAC_ADDR_SIZE);
/*
* Consider the case of 5 GHz + non-tx 6 GHz MLO candidate.
* The scan entry might be generated from a ML-probe, which doesn't have
* the MBSSID info for the non-tx partner link. In this case, host has
* to identify if this link is MBSS or not. This is essential to receive
* traffic over this link.
*
* The below logic looks into the rnr db for the 6 GHz bssid and
* determines if the bssid is non-tx profile from the bss parameter
* saved by its neighbor. If this is a non-tx bssid, but trans_bssid
* info is not available from the scan entry, then set transmitted bssid
* to bcast address. Upon sending this bcast tx bssid to firmware, the
* firmware would auto-detect the tx bssid from the upcoming beacons
* and tunes the interface to proper bssid.
*
* Note: Always send bcast mac in trans_bssid if the host is unable
* to determine if a given BSS is part of an MBSS.
*/
if (freq != INVALID_CHANNEL_NUM && !mbss_11ax->profile_idx &&
qdf_is_macaddr_zero((struct qdf_mac_addr *)&mbss_11ax->trans_bssid) &&
util_is_bssid_non_tx(wlan_vdev_get_psoc(vdev), &bssid, freq))
qdf_mem_copy(mbss_11ax->trans_bssid,
bcast_addr.bytes, QDF_MAC_ADDR_SIZE);
return QDF_STATUS_SUCCESS;
}