qcacld-3.0: Upgrade UDP qos based on user setting

Provide the support to upgrade the priority of
UDP packets based on user setting. The user will
set a particular QoS and for any UDP packets, which
has priority lesser than the current setting, the
QoS will be upgrade to the user set value.

The default value for this setting will be Best Effort.

Change-Id: I64207797e9c000d1d6fb757e22b02ee4f96a36f1
CRs-Fixed: 2724041

core/hdd/inc/wlan_hdd_main.h

@@ -1087,6 +1087,8 @@ struct hdd_context;
  * @latency_level: 0 - normal, 1 - moderate, 2 - low, 3 - ultralow
  * @last_disconnect_reason: Last disconnected internal reason code
  *                          as per enum qca_disconnect_reason_codes
+ * @upgrade_udp_qos_threshold: The threshold for user priority upgrade for
+			       any UDP packet.
  */
 struct hdd_adapter {
 	/* Magic cookie for adapter sanity verification.  Note that this
@@ -1295,6 +1297,7 @@ struct hdd_adapter {
 	bool is_link_layer_stats_set;
 #endif
 	uint8_t link_status;
+	uint8_t upgrade_udp_qos_threshold;
 
 	/* variable for temperature in Celsius */
 	int temperature;

core/hdd/src/wlan_hdd_main.c

@@ -6304,6 +6304,7 @@ struct hdd_adapter *hdd_open_adapter(struct hdd_context *hdd_ctx, uint8_t sessio
 		return NULL;
 	}
 
+	adapter->upgrade_udp_qos_threshold = QCA_WLAN_AC_BE;
 	qdf_spinlock_create(&adapter->vdev_lock);
 	qdf_atomic_init(&hdd_ctx->num_latency_critical_clients);
 

core/hdd/src/wlan_hdd_wmm.c

@@ -1863,6 +1863,17 @@ void hdd_wmm_classify_pkt(struct hdd_adapter *adapter,
 	dscp = (tos >> 2) & 0x3f;
 	*user_pri = adapter->dscp_to_up_map[dscp];
 
+	/*
+	 * Upgrade the priority, if the user priority of this packet is
+	 * less than the configured threshold.
+	 */
+	if (*user_pri < adapter->upgrade_udp_qos_threshold &&
+	    (qdf_nbuf_is_ipv4_udp_pkt(skb) || qdf_nbuf_is_ipv6_udp_pkt(skb))) {
+		/* Upgrade UDP pkt priority alone */
+		*user_pri = qca_wlan_ac_to_sme_qos(
+				adapter->upgrade_udp_qos_threshold);
+	}
+
 #ifdef HDD_WMM_DEBUG
 	hdd_debug("tos is %d, dscp is %d, up is %d", tos, dscp, *user_pri);
 #endif /* HDD_WMM_DEBUG */

core/sme/inc/sme_qos_api.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2020 The Linux Foundation. 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
@@ -196,6 +196,22 @@ struct sme_qos_wmmtspecinfo {
 	uint16_t medium_time;
 };
 
+static inline enum sme_qos_wmmuptype qca_wlan_ac_to_sme_qos(u8 priority)
+{
+	switch (priority) {
+	case QCA_WLAN_AC_BE:
+		return SME_QOS_WMM_UP_BE;
+	case QCA_WLAN_AC_BK:
+		return SME_QOS_WMM_UP_BK;
+	case QCA_WLAN_AC_VI:
+		return SME_QOS_WMM_UP_VI;
+	case QCA_WLAN_AC_VO:
+		return SME_QOS_WMM_UP_VO;
+	default:
+		return SME_QOS_WMM_UP_BE;
+	}
+}
+
 /* External APIs */
 typedef QDF_STATUS (*sme_QosCallback)(mac_handle_t mac_handle, void *HDDcontext,
 		struct sme_qos_wmmtspecinfo *pCurrentQoSInfo,