msm: ipa3: Add low-level IPA client support

Add low-level IPA client connect and disconnect
support.

Change-Id: Icb0aa110e2cbf71d9a5a19b88bb261667599461e
Signed-off-by: Praveen Kurapati <pkurapat@codeaurora.org>
Signed-off-by: Chetan C R <cchinnad@codeaurora.org>

drivers/platform/msm/ipa/ipa_api.c

@@ -399,6 +399,55 @@ int ipa_smmu_free_sgt(struct sg_table **out_sgt_ptr)
 	return 0;
 }
 
+/**
+ * ipa_connect() - low-level IPA client connect
+ * @in: [in] input parameters from client
+ * @sps:	[out] sps output from IPA needed by client for sps_connect
+ * @clnt_hdl:   [out] opaque client handle assigned by IPA to client
+ *
+ * Should be called by the driver of the peripheral that wants to connect to
+ * IPA in BAM-BAM mode. these peripherals are USB and HSIC. this api
+ * expects caller to take responsibility to add any needed headers, routing
+ * and filtering tables and rules as needed.
+ *
+ * Returns:     0 on success, negative on failure
+ *
+ * Note:	Should not be called from atomic context
+ */
+int ipa_connect(const struct ipa_connect_params *in, struct ipa_sps_params *sps,
+	u32 *clnt_hdl)
+{
+	int ret;
+
+	IPA_API_DISPATCH_RETURN(ipa_connect, in, sps, clnt_hdl);
+
+	return ret;
+}
+EXPORT_SYMBOL(ipa_connect);
+
+/**
+ * ipa_disconnect() - low-level IPA client disconnect
+ * @clnt_hdl:   [in] opaque client handle assigned by IPA to client
+ *
+ * Should be called by the driver of the peripheral that wants to disconnect
+ * from IPA in BAM-BAM mode. this api expects caller to take responsibility to
+ * free any needed headers, routing and filtering tables and rules as needed.
+ *
+ * Returns:     0 on success, negative on failure
+ *
+ * Note:	Should not be called from atomic context
+ */
+int ipa_disconnect(u32 clnt_hdl)
+{
+	int ret;
+
+	IPA_API_DISPATCH_RETURN(ipa_disconnect, clnt_hdl);
+
+	return ret;
+}
+EXPORT_SYMBOL(ipa_disconnect);
+
+
 /**
  * ipa_clear_endpoint_delay() - Clear ep_delay.
  * @clnt_hdl:	[in] IPA client handle

drivers/platform/msm/ipa/ipa_clients/rndis_ipa.c

@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2013-2018,2020 The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -603,7 +603,8 @@ int rndis_ipa_init(struct ipa_usb_init_params *params)
 	}
 	RNDIS_IPA_DEBUG("Device Ethernet address set %pM\n", net->dev_addr);
 
-	if (ipa_is_vlan_mode(IPA_VLAN_IF_RNDIS,
+	if ((ipa_get_hw_type() >= IPA_HW_v3_0) &&
+		ipa_is_vlan_mode(IPA_VLAN_IF_RNDIS,
 		&rndis_ipa_ctx->is_vlan_mode)) {
 		RNDIS_IPA_ERROR("couldn't acquire vlan mode, is ipa ready?\n");
 		goto fail_get_vlan_mode;