qcacld-3.0: Disable LRO capability during concurrency

LRO rx jumbo packets cannot be forwarded to other vdev and kernel drops
them with warning message:
"skbuff: wlan0: received packets cannot be forwarded while LRO is enabled"
So disable LRO capability during concurrency.

Change-Id: Ib35e1ee5f9c18a846e21ce1eb293e12e17761fa8
CRs-Fixed: 1092193

core/cds/inc/cds_sched.h

@@ -174,6 +174,8 @@ struct cds_log_complete {
 	bool recovery_needed;
 };
 
+/* forward-declare hdd_context_s as it is used ina function type */
+struct hdd_context_s;
 typedef struct _cds_context_type {
 	/* Scheduler Context */
 	cds_sched_context qdf_sched;

core/hdd/inc/wlan_hdd_lro.h

@@ -50,6 +50,7 @@ int hdd_lro_init(struct hdd_context *hdd_ctx);
 enum hdd_lro_rx_status hdd_lro_rx(struct hdd_context *hdd_ctx,
 	 struct hdd_adapter *adapter, struct sk_buff *skb);
 void hdd_lro_display_stats(struct hdd_context *hdd_ctx);
+void hdd_disable_lro_in_concurrency(bool);
 #else
 static inline int hdd_lro_init(struct hdd_context *hdd_ctx)
 {
@@ -65,5 +66,9 @@ static inline enum hdd_lro_rx_status hdd_lro_rx(struct hdd_context *hdd_ctx,
 static inline void hdd_lro_display_stats(struct hdd_context *hdd_ctx)
 {
 }
+
+static inline void hdd_disable_lro_in_concurrency(bool disable)
+{
+}
 #endif /* FEATURE_LRO */
 #endif /* __WLAN_HDD_LRO_H__ */

core/hdd/inc/wlan_hdd_main.h

@@ -1763,6 +1763,7 @@ struct hdd_context {
 	bool imps_enabled;
 	int user_configured_pkt_filter_rules;
 	bool is_fils_roaming_supported;
+	qdf_atomic_t disable_lro_in_concurrency;
 };
 
 /**

core/hdd/src/wlan_hdd_lro.c

@@ -86,7 +86,7 @@ int hdd_lro_init(struct hdd_context *hdd_ctx)
 	if ((!hdd_ctx->config->lro_enable) &&
 	    (hdd_napi_enabled(HDD_NAPI_ANY) == 0)) {
 		hdd_warn("LRO and NAPI are both disabled");
-		return 0;
+		return QDF_STATUS_E_FAILURE;
 	}
 
 	lro_config.lro_enable = 1;
@@ -141,9 +141,13 @@ enum hdd_lro_rx_status hdd_lro_rx(struct hdd_context *hdd_ctx,
 	qdf_lro_ctx_t ctx;
 	enum hdd_lro_rx_status status = HDD_LRO_NO_RX;
 
-	if ((adapter->dev->features & NETIF_F_LRO) &&
+	if (((adapter->dev->features & NETIF_F_LRO) != NETIF_F_LRO) ||
-		 QDF_NBUF_CB_RX_TCP_PROTO(skb) &&
+		!QDF_NBUF_CB_RX_TCP_PROTO(skb) ||
-		 !QDF_NBUF_CB_RX_PEER_CACHED_FRM(skb)) {
+		QDF_NBUF_CB_RX_PEER_CACHED_FRM(skb) ||
+		qdf_atomic_read(&hdd_ctx->disable_lro_in_concurrency))
+		return HDD_LRO_NO_RX;
+
+	{
 		struct qdf_lro_info info;
 		struct net_lro_desc *lro_desc = NULL;
 		struct hif_opaque_softc *hif_hdl =
@@ -200,3 +204,19 @@ void hdd_lro_display_stats(struct hdd_context *hdd_ctx)
 {
 	hdd_debug("LRO stats is broken, will fix it");
 }
+
+/**
+ * hdd_disable_lro_in_concurrency() - Disable LRO due to concurrency
+ * @disable: bool value
+ *
+ * Return: none
+ */
+void hdd_disable_lro_in_concurrency(bool disable)
+{
+	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
+
+	if (disable)
+		qdf_atomic_set(&hdd_ctx->disable_lro_in_concurrency, 1);
+	else
+		qdf_atomic_set(&hdd_ctx->disable_lro_in_concurrency, 0);
+}

core/hdd/src/wlan_hdd_main.c

@@ -9313,6 +9313,7 @@ int hdd_configure_cds(struct hdd_context *hdd_ctx, struct hdd_adapter *adapter)
 	uint32_t num_abg_tx_chains = 0;
 	uint32_t num_11b_tx_chains = 0;
 	uint32_t num_11ag_tx_chains = 0;
+	struct policy_mgr_dp_cbacks dp_cbs = {0};
 
 	if (hdd_ctx->config->sifs_burst_duration) {
 		set_value = (SIFS_BURST_DUR_MULTIPLIER) *
@@ -9406,6 +9407,13 @@ int hdd_configure_cds(struct hdd_context *hdd_ctx, struct hdd_adapter *adapter)
 	if (ret)
 		goto cds_disable;
 
+	dp_cbs.hdd_disable_lro_in_concurrency = hdd_disable_lro_in_concurrency;
+	status = policy_mgr_register_dp_cb(hdd_ctx->hdd_psoc, &dp_cbs);
+	if (!QDF_IS_STATUS_SUCCESS(status)) {
+		hdd_debug("LRO disbaled, failed to register with policy mgr");
+		goto cds_disable;
+	}
+
 	if (hdd_enable_egap(hdd_ctx))
 		hdd_debug("enhance green ap is not enabled");