qcacld-3.0: Process update ch_width request as per omn ie

AP sends "Operating Mode Notification" IE having max supported
channel width (say ap operating bw) via beacon/probe response/
association/re-association response frame.

When datapath detect leaky AP, to enable/disable, userspace
sends ch_width update to host.

Step 1. If STA founds OMN IE present in above frame, host
sends update channel width (say new AP operating BW is
80 MHz) ind via WMI_PEER_SET_PARAM_CMDID with param id 4
(WMI_HOST_PEER_CHWIDTH).

Step 2: After ch_width update to 80 MHz in FW at step 1,
if host receives a update ch_width (to 160 MHz) request
from userspace on leaky AP detection disable. Host updates
its internal channel info structure with new BW and sends
update indication to FW via WMI_VDEV_SET_PARAM_CMDID
with param id WMI_VDEV_PARAM_CHWIDTH_WITH_NOTIFY.

In case, if host allows ch_width update greater than ch_width
present in OMN IE (ap operating bw), FW only disable leaky
detection but did not update Rx/Tx BW as per new ch_width as
ap operating bw is still 80 MHz (configured at step 1).
This leads to out of sync for value of ch_width in host and
FW and IOT issues.

To keep host and FW in sync with current AP's operating BW,
add a sanity check and reject request before updating internal
channel info structure in host if new ch_width (coming from
user space) is greater than ap operating bw present OMN IE.

Change-Id: Iedc1706e32b9e08512ca6c9b98162902cd32f976
CRs-Fixed: 3732557

components/mlme/core/inc/wlan_mlme_main.h

@@ -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
@@ -399,11 +399,13 @@ struct ft_context {
 /**
  * struct assoc_channel_info - store channel info at the time of association
  * @assoc_ch_width: channel width at the time of initial connection
+ * @omn_ie_ch_width: ch width present in operating mode notification IE of bcn
  * @sec_2g_freq: secondary 2 GHz freq
  * @cen320_freq: 320 MHz center freq
  */
 struct assoc_channel_info {
 	enum phy_ch_width assoc_ch_width;
+	enum phy_ch_width omn_ie_ch_width;
 	qdf_freq_t sec_2g_freq;
 	qdf_freq_t cen320_freq;
 };

components/mlme/core/src/wlan_mlme_main.c

@@ -864,6 +864,8 @@ QDF_STATUS mlme_init_connect_chan_info_config(struct vdev_mlme_obj *vdev_mlme)
 
 	mlme_priv->connect_info.assoc_chan_info.assoc_ch_width =
 							CH_WIDTH_INVALID;
+	mlme_priv->connect_info.assoc_chan_info.omn_ie_ch_width =
+							CH_WIDTH_INVALID;
 	mlme_priv->connect_info.assoc_chan_info.sec_2g_freq = 0;
 	mlme_priv->connect_info.assoc_chan_info.cen320_freq = 0;
 

components/mlme/dispatcher/src/wlan_mlme_api.c

@@ -7852,7 +7852,7 @@ wlan_mlme_send_ch_width_update_with_notify(struct wlan_objmgr_psoc *psoc,
 {
 	QDF_STATUS status;
 	wmi_host_channel_width wmi_chan_width;
-	enum phy_ch_width associated_ch_width;
+	enum phy_ch_width associated_ch_width, omn_ie_ch_width;
 	struct wlan_channel *des_chan;
 	struct mlme_legacy_priv *mlme_priv;
 	qdf_freq_t sec_2g_freq = 0;
@@ -7865,6 +7865,14 @@ wlan_mlme_send_ch_width_update_with_notify(struct wlan_objmgr_psoc *psoc,
 	if (!des_chan)
 		return QDF_STATUS_E_INVAL;
 
+	omn_ie_ch_width =
+		mlme_priv->connect_info.assoc_chan_info.omn_ie_ch_width;
+	if (omn_ie_ch_width != CH_WIDTH_INVALID && ch_width > omn_ie_ch_width) {
+		mlme_debug("vdev %d: Invalid new chwidth:%d, omn_ie_cw:%d",
+			   vdev_id, ch_width, omn_ie_ch_width);
+		return QDF_STATUS_E_INVAL;
+	}
+
 	associated_ch_width =
 		mlme_priv->connect_info.assoc_chan_info.assoc_ch_width;
 	if (associated_ch_width == CH_WIDTH_INVALID ||

core/mac/src/pe/include/lim_api.h

@@ -648,6 +648,17 @@ lim_fill_pe_session(struct mac_context *mac_ctx,
 		    struct pe_session *session,
 		    struct bss_description *bss_desc);
 
+/**
+ * lim_update_omn_ie_ch_width() - update omn_ie_ch_width in struct
+ * assoc_channel_info while processing bcn/probe resp/assoc resp/re-assoc resp
+ * @vdev: VDEV object manager
+ * @ch_width: ch_width present in OMN IE
+ *
+ * Return: none
+ */
+void lim_update_omn_ie_ch_width(struct wlan_objmgr_vdev *vdev,
+				enum phy_ch_width ch_width);
+
 #ifdef WLAN_FEATURE_11BE_MLO
 /*
  * lim_add_bcn_probe() - Add the generated probe resp to scan DB

core/mac/src/pe/lim/lim_api.c

@@ -3801,6 +3801,20 @@ lim_mlo_roam_delete_link_peer(struct pe_session *pe_session,
 }
 #endif
 
+void lim_update_omn_ie_ch_width(struct wlan_objmgr_vdev *vdev,
+				enum phy_ch_width ch_width)
+{
+	struct mlme_legacy_priv *mlme_priv;
+
+	mlme_priv = wlan_vdev_mlme_get_ext_hdl(vdev);
+	if (!mlme_priv) {
+		mlme_legacy_err("vdev legacy private object is NULL");
+		return;
+	}
+
+	mlme_priv->connect_info.assoc_chan_info.omn_ie_ch_width = ch_width;
+}
+
 #ifdef WLAN_FEATURE_11BE_MLO
 static bool
 lim_match_link_info(uint8_t req_link_id,

core/mac/src/pe/lim/lim_process_assoc_rsp_frame.c

@@ -148,6 +148,7 @@ void lim_update_assoc_sta_datas(struct mac_context *mac_ctx,
 	tDot11fIEeht_cap *eht_cap = NULL;
 	struct bss_description *bss_desc = NULL;
 	tDot11fIEVHTOperation *vht_oper = NULL;
+	enum phy_ch_width omn_ie_ch_width;
 
 	lim_get_phy_mode(mac_ctx, &phy_mode, session_entry);
 	sta_ds->staType = STA_ENTRY_SELF;
@@ -314,8 +315,13 @@ void lim_update_assoc_sta_datas(struct mac_context *mac_ctx,
 		 * OMN IE is present in the Assoc response, but the channel
 		 * width/Rx NSS update will happen through the peer_assoc cmd.
 		 */
-		pe_debug("OMN IE is present in the assoc rsp, update NSS/Ch width");
+		omn_ie_ch_width = assoc_rsp->oper_mode_ntf.chanWidth;
+		pe_debug("OMN IE present in re/assoc rsp, omn_ie_ch_width: %d",
+			 omn_ie_ch_width);
+		lim_update_omn_ie_ch_width(session_entry->vdev,
+					   omn_ie_ch_width);
 	}
+
 	if (lim_process_srp_ie(assoc_rsp, sta_ds) == QDF_STATUS_SUCCESS)
 		lim_update_vdev_sr_elements(session_entry, sta_ds);
 }

core/mac/src/pe/lim/lim_utils.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2012-2021 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
@@ -3204,7 +3204,7 @@ void lim_update_nss(struct mac_context *mac_ctx, tpDphHashNode sta_ds,
  * @ch_width: Channel width in operating mode notification
  * @new_ch_width: Final channel bandwifdth
  *
- * function to update channel width
+ * function to send WMI_PEER_SET_PARAM_CMDID to FW to update ch_width
  *
  * Return: Success or Failure
  */

core/mac/src/pe/sch/sch_beacon_process.c

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2012-2021 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
@@ -474,10 +474,13 @@ sch_bcn_update_opmode_change(struct mac_context *mac_ctx, tpDphHashNode sta_ds,
 			bcn->HTInfo.recommendedTxWidthSet : false;
 
 	if (bcn->OperatingMode.present) {
-		pe_debug("OMN IE is present in the beacon, update NSS/Ch width");
 		lim_update_nss(mac_ctx, sta_ds, bcn->OperatingMode.rxNSS,
 			       session);
 		ch_width = bcn->OperatingMode.chanWidth;
+		pe_debug("OMN IE present in bcn/probe rsp, omn_ie_ch_width: %d",
+			 ch_width);
+		lim_update_omn_ie_ch_width(session->vdev, ch_width);
+
 	} else {
 		bcn_vht_chwidth = lim_get_vht_ch_width(vht_caps, vht_op,
 						       &bcn->HTInfo);
@@ -485,6 +488,7 @@ sch_bcn_update_opmode_change(struct mac_context *mac_ctx, tpDphHashNode sta_ds,
 			lim_convert_vht_chwidth_to_phy_chwidth(bcn_vht_chwidth,
 							       is_40);
 	}
+
 	lim_update_channel_width(mac_ctx, sta_ds, session, ch_width, &ch_bw);
 }
 

core/wma/src/wma_mgmt.c

@@ -2980,15 +2980,16 @@ void wma_process_update_opmode(tp_wma_handle wma_handle,
 
 	ch_width = wmi_get_ch_width_from_phy_mode(wma_handle->wmi_handle,
 						  fw_phymode);
-	wma_debug("ch_width: %d, fw phymode: %d peer_phymode %d",
-		  ch_width, fw_phymode, peer_phymode);
+	wma_debug("ch_width: %d, fw phymode: %d peer_phymode: %d, op_mode: %d",
+		  ch_width, fw_phymode, peer_phymode,
+		  update_vht_opmode->opMode);
+
 	if (ch_width < update_vht_opmode->opMode) {
 		wma_err("Invalid peer bw update %d, self bw %d",
 			update_vht_opmode->opMode, ch_width);
 		return;
 	}
 
-	wma_debug("opMode = %d", update_vht_opmode->opMode);
 	wma_set_peer_param(wma_handle, update_vht_opmode->peer_mac,
 			   WMI_HOST_PEER_CHWIDTH, update_vht_opmode->opMode,
 			   update_vht_opmode->smesessionId);