qca-nss-drv/nss_vlan.c - manifest_repos/sdk - Git at Google

 /*
  **************************************************************************
  * Copyright (c) 2017-2018, 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
  * above copyright notice and this permission notice appear in all copies.
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  **************************************************************************
  */

 #include "nss_tx_rx_common.h"
 #include "nss_vlan_log.h"

 #define NSS_VLAN_TX_TIMEOUT 1000 /* 1 Second */

 /*
  * Private data structure
  */
 static struct nss_vlan_pvt {
 	struct semaphore sem;
 	struct completion complete;
 	int response;
 	void *cb;
 	void *app_data;
 } vlan_pvt;

 /*
  * nss_vlan_get_context()
  */
 struct nss_ctx_instance *nss_vlan_get_context(void)
 {
 	return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.vlan_handler_id];
 }
 EXPORT_SYMBOL(nss_vlan_get_context);

 /*
  * nss_vlan_verify_if_num()
  *	Verify if_num passed to us.
  */
 static bool nss_vlan_verify_if_num(uint32_t if_num)
 {
 	if (!nss_is_dynamic_interface(if_num)) {
 		return false;
 	}

 	if (nss_dynamic_interface_get_type(nss_vlan_get_context(), if_num) != NSS_DYNAMIC_INTERFACE_TYPE_VLAN) {
 		return false;
 	}

 	return true;
 }

 /*
  * nss_vlan_handler()
  *	Handle NSS -> HLOS messages for vlan
  */
 static void nss_vlan_handler(struct nss_ctx_instance *nss_ctx, struct nss_cmn_msg *ncm, void *app_data)
 {
 	struct nss_vlan_msg *nvm = (struct nss_vlan_msg *)ncm;
 	nss_vlan_msg_callback_t cb;

 	nss_assert(nss_vlan_verify_if_num(ncm->interface));

 	/*
 	 * Trace messages.
 	 */
 	nss_vlan_log_rx_msg(nvm);

 	/*
 	 * Is this a valid request/response packet?
 	 */
 	if (ncm->type >= NSS_VLAN_MSG_TYPE_MAX) {
 		nss_warning("%px: received invalid message %d for vlan interface", nss_ctx, ncm->type);
 		return;
 	}

 	if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_vlan_msg)) {
 		nss_warning("%px: length of message is greater than required: %d", nss_ctx, nss_cmn_get_msg_len(ncm));
 		return;
 	}

 	/*
 	 * Update the callback and app_data for NOTIFY messages, vlan sends all notify messages
 	 * to the same callback/app_data.
 	 */
 	if (ncm->response == NSS_CMN_RESPONSE_NOTIFY) {
 		ncm->cb = (nss_ptr_t)nss_ctx->nss_top->vlan_callback;
 		ncm->app_data = (nss_ptr_t)app_data;
 	}

 	/*
 	 * Log failures
 	 */
 	nss_core_log_msg_failures(nss_ctx, ncm);

 	/*
 	 * Do we have a call back
 	 */
 	if (!ncm->cb) {
 		return;
 	}

 	/*
 	 * callback
 	 */
 	cb = (nss_vlan_msg_callback_t)ncm->cb;
 	cb((void *)ncm->app_data, nvm);
 }

 /*
  * nss_vlan_callback()
  *	Callback to handle the completion of NSS->HLOS messages.
  */
 static void nss_vlan_callback(void *app_data, struct nss_vlan_msg *nvm)
 {
 	nss_vlan_msg_callback_t callback = (nss_vlan_msg_callback_t)vlan_pvt.cb;
 	void *data = vlan_pvt.app_data;

 	vlan_pvt.response = NSS_TX_SUCCESS;
 	vlan_pvt.cb = NULL;
 	vlan_pvt.app_data = NULL;

 	if (nvm->cm.response != NSS_CMN_RESPONSE_ACK) {
 		nss_warning("vlan error response %d\n", nvm->cm.response);
 		vlan_pvt.response = nvm->cm.response;
 	}

 	if (callback) {
 		callback(data, nvm);
 	}
 	complete(&vlan_pvt.complete);
 }

 /*
  * nss_vlan_tx_msg()
  *	Transmit a vlan message to NSSFW
  */
 nss_tx_status_t nss_vlan_tx_msg(struct nss_ctx_instance *nss_ctx, struct nss_vlan_msg *msg)
 {
 	struct nss_cmn_msg *ncm = &msg->cm;

 	/*
 	 * Trace messages.
 	 */
 	nss_vlan_log_tx_msg(msg);

 	/*
 	 * Sanity check the message
 	 */
 	if (!nss_vlan_verify_if_num(ncm->interface)) {
 		nss_warning("%px: tx request for interface that is not a vlan: %d", nss_ctx, ncm->interface);
 		return NSS_TX_FAILURE;
 	}

 	if (ncm->type >= NSS_VLAN_MSG_TYPE_MAX) {
 		nss_warning("%px: message type out of range: %d", nss_ctx, ncm->type);
 		return NSS_TX_FAILURE;
 	}

 	return nss_core_send_cmd(nss_ctx, msg, sizeof(*msg), NSS_NBUF_PAYLOAD_SIZE);
 }
 EXPORT_SYMBOL(nss_vlan_tx_msg);

 /*
  * nss_vlan_tx_msg_sync()
  *	Transmit a vlan message to NSS firmware synchronously.
  */
 nss_tx_status_t nss_vlan_tx_msg_sync(struct nss_ctx_instance *nss_ctx, struct nss_vlan_msg *nvm)
 {
 	nss_tx_status_t status;
 	int ret = 0;

 	down(&vlan_pvt.sem);
 	vlan_pvt.cb = (void *)nvm->cm.cb;
 	vlan_pvt.app_data = (void *)nvm->cm.app_data;

 	nvm->cm.cb = (nss_ptr_t)nss_vlan_callback;
 	nvm->cm.app_data = (nss_ptr_t)NULL;

 	status = nss_vlan_tx_msg(nss_ctx, nvm);
 	if (status != NSS_TX_SUCCESS) {
 		nss_warning("%px: vlan_tx_msg failed\n", nss_ctx);
 		up(&vlan_pvt.sem);
 		return status;
 	}

 	ret = wait_for_completion_timeout(&vlan_pvt.complete, msecs_to_jiffies(NSS_VLAN_TX_TIMEOUT));
 	if (!ret) {
 		nss_warning("%px: vlan msg tx failed due to timeout\n", nss_ctx);
 		vlan_pvt.response = NSS_TX_FAILURE;
 	}

 	status = vlan_pvt.response;
 	up(&vlan_pvt.sem);
 	return status;
 }
 EXPORT_SYMBOL(nss_vlan_tx_msg_sync);

 /*
  * nss_vlan_msg_init()
  *	Initialize nss_vlan_msg.
  */
 void nss_vlan_msg_init(struct nss_vlan_msg *ncm, uint16_t if_num, uint32_t type, uint32_t len, void *cb, void *app_data)
 {
 	nss_cmn_msg_init(&ncm->cm, if_num, type, len, cb, app_data);
 }
 EXPORT_SYMBOL(nss_vlan_msg_init);

 /*
  * nss_vlan_tx_change_mtu_msg
  *	API to send change mtu message to NSS FW
  */
 nss_tx_status_t nss_vlan_tx_set_mtu_msg(uint32_t vlan_if_num, uint32_t mtu)
 {
 	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
 	struct nss_vlan_msg nvm;
 	struct nss_if_mtu_change *nimc;

 	if (!nss_ctx) {
 		nss_warning("Can't get nss context\n");
 		return NSS_TX_FAILURE;
 	}

 	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
 		nss_warning("%px: received invalid interface %d", nss_ctx, vlan_if_num);
 		return NSS_TX_FAILURE;
 	}

 	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_IF_MTU_CHANGE,
 			sizeof(struct nss_if_mtu_change), NULL, NULL);

 	nimc = &nvm.msg.if_msg.mtu_change;
 	nimc->min_buf_size = (uint16_t)mtu;

 	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
 }
 EXPORT_SYMBOL(nss_vlan_tx_set_mtu_msg);

 /*
  * nss_vlan_tx_set_mac_addr_msg
  *	API to send change mac addr message to NSS FW
  */
 nss_tx_status_t nss_vlan_tx_set_mac_addr_msg(uint32_t vlan_if_num, uint8_t *addr)
 {
 	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
 	struct nss_vlan_msg nvm;
 	struct nss_if_mac_address_set *nmas;

 	if (!nss_ctx) {
 		nss_warning("Can't get nss context\n");
 		return NSS_TX_FAILURE;
 	}

 	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
 		nss_warning("%px: received invalid interface %d", nss_ctx, vlan_if_num);
 		return NSS_TX_FAILURE;
 	}

 	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_IF_MAC_ADDR_SET,
 			sizeof(struct nss_if_mac_address_set), NULL, NULL);

 	nmas = &nvm.msg.if_msg.mac_address_set;
 	memcpy(nmas->mac_addr, addr, ETH_ALEN);
 	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
 }
 EXPORT_SYMBOL(nss_vlan_tx_set_mac_addr_msg);

 /*
  * nss_vlan_tx_vsi_attach_msg
  *	API to send VSI attach message to NSS FW
  */
 nss_tx_status_t nss_vlan_tx_vsi_attach_msg(uint32_t vlan_if_num, uint32_t vsi)
 {
 	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
 	struct nss_vlan_msg nvm;

 	if (!nss_ctx) {
 		nss_warning("Can't get nss context\n");
 		return NSS_TX_FAILURE;
 	}

 	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
 		nss_warning("%px: received invalid interface %d\n", nss_ctx, vlan_if_num);
 		return NSS_TX_FAILURE;
 	}

 	nvm.msg.if_msg.vsi_assign.vsi = vsi;
 	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_IF_VSI_ASSIGN,
 				sizeof(struct nss_if_vsi_assign), NULL, NULL);

 	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
 }
 EXPORT_SYMBOL(nss_vlan_tx_vsi_attach_msg);

 /*
  * nss_vlan_tx_vsi_detach_msg
  *	API to send VSI detach message to NSS FW
  */
 nss_tx_status_t nss_vlan_tx_vsi_detach_msg(uint32_t vlan_if_num, uint32_t vsi)
 {
 	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
 	struct nss_vlan_msg nvm;

 	if (!nss_ctx) {
 		nss_warning("Can't get nss context\n");
 		return NSS_TX_FAILURE;
 	}

 	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
 		nss_warning("%px: received invalid interface %d\n", nss_ctx, vlan_if_num);
 		return NSS_TX_FAILURE;
 	}

 	nvm.msg.if_msg.vsi_unassign.vsi = vsi;
 	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_IF_VSI_UNASSIGN,
 				sizeof(struct nss_if_vsi_unassign), NULL, NULL);

 	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
 }
 EXPORT_SYMBOL(nss_vlan_tx_vsi_detach_msg);

 /*
  * nss_vlan_tx_add_tag_msg
  *	API to send vlan add tag message to NSS FW
  */
 nss_tx_status_t nss_vlan_tx_add_tag_msg(uint32_t vlan_if_num, uint32_t vlan_tag, uint32_t next_hop, uint32_t physical_dev)
 {
 	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
 	struct nss_vlan_msg nvm;

 	if (!nss_ctx) {
 		nss_warning("Can't get nss context\n");
 		return NSS_TX_FAILURE;
 	}

 	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
 		nss_warning("%px: received invalid interface %d\n", nss_ctx, vlan_if_num);
 		return NSS_TX_FAILURE;
 	}

 	nvm.msg.add_tag.next_hop = next_hop;
 	nvm.msg.add_tag.if_num = physical_dev;
 	nvm.msg.add_tag.vlan_tag = vlan_tag;
 	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_VLAN_MSG_ADD_TAG,
 				sizeof(struct nss_vlan_msg_add_tag), NULL, NULL);

 	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
 }
 EXPORT_SYMBOL(nss_vlan_tx_add_tag_msg);

 /**
  * @brief Register to send/receive vlan messages to NSS
  *
  * @param if_num NSS interface number
  * @param vlan_data_callback Callback for vlan data
  * @param netdev netdevice associated with the vlan interface
  * @param features denotes the skb types supported by this interface
  *
  * @return nss_ctx_instance* NSS context
  */
 struct nss_ctx_instance *nss_register_vlan_if(uint32_t if_num, nss_vlan_callback_t vlan_data_callback,
 					      struct net_device *netdev, uint32_t features, void *app_ctx)
 {
 	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();

 	nss_assert(nss_vlan_verify_if_num(if_num));

 	nss_core_register_subsys_dp(nss_ctx, if_num, vlan_data_callback, NULL, app_ctx, netdev, features);

 	nss_core_register_handler(nss_ctx, if_num, nss_vlan_handler, app_ctx);

 	return nss_ctx;
 }
 EXPORT_SYMBOL(nss_register_vlan_if);

 /*
  * nss_unregister_vlan_if()
  */
 void nss_unregister_vlan_if(uint32_t if_num)
 {
 	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();

 	nss_assert(nss_vlan_verify_if_num(if_num));

 	nss_core_unregister_subsys_dp(nss_ctx, if_num);

 	nss_core_unregister_handler(nss_ctx, if_num);
 }
 EXPORT_SYMBOL(nss_unregister_vlan_if);

 /*
  * nss_vlan_register_handler()
  *   debugfs stats msg handler received on static vlan interface
  */
 void nss_vlan_register_handler(void)
 {
 	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();

 	nss_info("nss_vlan_register_handler\n");
 	nss_core_register_handler(nss_ctx, NSS_VLAN_INTERFACE, nss_vlan_handler, NULL);

 	sema_init(&vlan_pvt.sem, 1);
 	init_completion(&vlan_pvt.complete);
 }
 EXPORT_SYMBOL(nss_vlan_register_handler);
	/*
	**************************************************************************
	* Copyright (c) 2017-2018, 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
	* above copyright notice and this permission notice appear in all copies.
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
	* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	**************************************************************************
	*/

	#include "nss_tx_rx_common.h"
	#include "nss_vlan_log.h"

	#define NSS_VLAN_TX_TIMEOUT 1000 /* 1 Second */

	/*
	* Private data structure
	*/
	static struct nss_vlan_pvt {
	struct semaphore sem;
	struct completion complete;
	int response;
	void *cb;
	void *app_data;
	} vlan_pvt;

	/*
	* nss_vlan_get_context()
	*/
	struct nss_ctx_instance *nss_vlan_get_context(void)
	{
	return (struct nss_ctx_instance *)&nss_top_main.nss[nss_top_main.vlan_handler_id];
	}
	EXPORT_SYMBOL(nss_vlan_get_context);

	/*
	* nss_vlan_verify_if_num()
	* Verify if_num passed to us.
	*/
	static bool nss_vlan_verify_if_num(uint32_t if_num)
	{
	if (!nss_is_dynamic_interface(if_num)) {
	return false;
	}

	if (nss_dynamic_interface_get_type(nss_vlan_get_context(), if_num) != NSS_DYNAMIC_INTERFACE_TYPE_VLAN) {
	return false;
	}

	return true;
	}

	/*
	* nss_vlan_handler()
	* Handle NSS -> HLOS messages for vlan
	*/
	static void nss_vlan_handler(struct nss_ctx_instance nss_ctx, struct nss_cmn_msg ncm, void *app_data)
	{
	struct nss_vlan_msg nvm = (struct nss_vlan_msg )ncm;
	nss_vlan_msg_callback_t cb;

	nss_assert(nss_vlan_verify_if_num(ncm->interface));

	/*
	* Trace messages.
	*/
	nss_vlan_log_rx_msg(nvm);

	/*
	* Is this a valid request/response packet?
	*/
	if (ncm->type >= NSS_VLAN_MSG_TYPE_MAX) {
	nss_warning("%px: received invalid message %d for vlan interface", nss_ctx, ncm->type);
	return;
	}

	if (nss_cmn_get_msg_len(ncm) > sizeof(struct nss_vlan_msg)) {
	nss_warning("%px: length of message is greater than required: %d", nss_ctx, nss_cmn_get_msg_len(ncm));
	return;
	}

	/*
	* Update the callback and app_data for NOTIFY messages, vlan sends all notify messages
	* to the same callback/app_data.
	*/
	if (ncm->response == NSS_CMN_RESPONSE_NOTIFY) {
	ncm->cb = (nss_ptr_t)nss_ctx->nss_top->vlan_callback;
	ncm->app_data = (nss_ptr_t)app_data;
	}

	/*
	* Log failures
	*/
	nss_core_log_msg_failures(nss_ctx, ncm);

	/*
	* Do we have a call back
	*/
	if (!ncm->cb) {
	return;
	}

	/*
	* callback
	*/
	cb = (nss_vlan_msg_callback_t)ncm->cb;
	cb((void *)ncm->app_data, nvm);
	}

	/*
	* nss_vlan_callback()
	* Callback to handle the completion of NSS->HLOS messages.
	*/
	static void nss_vlan_callback(void app_data, struct nss_vlan_msg nvm)
	{
	nss_vlan_msg_callback_t callback = (nss_vlan_msg_callback_t)vlan_pvt.cb;
	void *data = vlan_pvt.app_data;

	vlan_pvt.response = NSS_TX_SUCCESS;
	vlan_pvt.cb = NULL;
	vlan_pvt.app_data = NULL;

	if (nvm->cm.response != NSS_CMN_RESPONSE_ACK) {
	nss_warning("vlan error response %d\n", nvm->cm.response);
	vlan_pvt.response = nvm->cm.response;
	}

	if (callback) {
	callback(data, nvm);
	}
	complete(&vlan_pvt.complete);
	}

	/*
	* nss_vlan_tx_msg()
	* Transmit a vlan message to NSSFW
	*/
	nss_tx_status_t nss_vlan_tx_msg(struct nss_ctx_instance nss_ctx, struct nss_vlan_msg msg)
	{
	struct nss_cmn_msg *ncm = &msg->cm;

	/*
	* Trace messages.
	*/
	nss_vlan_log_tx_msg(msg);

	/*
	* Sanity check the message
	*/
	if (!nss_vlan_verify_if_num(ncm->interface)) {
	nss_warning("%px: tx request for interface that is not a vlan: %d", nss_ctx, ncm->interface);
	return NSS_TX_FAILURE;
	}

	if (ncm->type >= NSS_VLAN_MSG_TYPE_MAX) {
	nss_warning("%px: message type out of range: %d", nss_ctx, ncm->type);
	return NSS_TX_FAILURE;
	}

	return nss_core_send_cmd(nss_ctx, msg, sizeof(*msg), NSS_NBUF_PAYLOAD_SIZE);
	}
	EXPORT_SYMBOL(nss_vlan_tx_msg);

	/*
	* nss_vlan_tx_msg_sync()
	* Transmit a vlan message to NSS firmware synchronously.
	*/
	nss_tx_status_t nss_vlan_tx_msg_sync(struct nss_ctx_instance nss_ctx, struct nss_vlan_msg nvm)
	{
	nss_tx_status_t status;
	int ret = 0;

	down(&vlan_pvt.sem);
	vlan_pvt.cb = (void *)nvm->cm.cb;
	vlan_pvt.app_data = (void *)nvm->cm.app_data;

	nvm->cm.cb = (nss_ptr_t)nss_vlan_callback;
	nvm->cm.app_data = (nss_ptr_t)NULL;

	status = nss_vlan_tx_msg(nss_ctx, nvm);
	if (status != NSS_TX_SUCCESS) {
	nss_warning("%px: vlan_tx_msg failed\n", nss_ctx);
	up(&vlan_pvt.sem);
	return status;
	}

	ret = wait_for_completion_timeout(&vlan_pvt.complete, msecs_to_jiffies(NSS_VLAN_TX_TIMEOUT));
	if (!ret) {
	nss_warning("%px: vlan msg tx failed due to timeout\n", nss_ctx);
	vlan_pvt.response = NSS_TX_FAILURE;
	}

	status = vlan_pvt.response;
	up(&vlan_pvt.sem);
	return status;
	}
	EXPORT_SYMBOL(nss_vlan_tx_msg_sync);

	/*
	* nss_vlan_msg_init()
	* Initialize nss_vlan_msg.
	*/
	void nss_vlan_msg_init(struct nss_vlan_msg ncm, uint16_t if_num, uint32_t type, uint32_t len, void cb, void *app_data)
	{
	nss_cmn_msg_init(&ncm->cm, if_num, type, len, cb, app_data);
	}
	EXPORT_SYMBOL(nss_vlan_msg_init);

	/*
	* nss_vlan_tx_change_mtu_msg
	* API to send change mtu message to NSS FW
	*/
	nss_tx_status_t nss_vlan_tx_set_mtu_msg(uint32_t vlan_if_num, uint32_t mtu)
	{
	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
	struct nss_vlan_msg nvm;
	struct nss_if_mtu_change *nimc;

	if (!nss_ctx) {
	nss_warning("Can't get nss context\n");
	return NSS_TX_FAILURE;
	}

	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
	nss_warning("%px: received invalid interface %d", nss_ctx, vlan_if_num);
	return NSS_TX_FAILURE;
	}

	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_IF_MTU_CHANGE,
	sizeof(struct nss_if_mtu_change), NULL, NULL);

	nimc = &nvm.msg.if_msg.mtu_change;
	nimc->min_buf_size = (uint16_t)mtu;

	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
	}
	EXPORT_SYMBOL(nss_vlan_tx_set_mtu_msg);

	/*
	* nss_vlan_tx_set_mac_addr_msg
	* API to send change mac addr message to NSS FW
	*/
	nss_tx_status_t nss_vlan_tx_set_mac_addr_msg(uint32_t vlan_if_num, uint8_t *addr)
	{
	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
	struct nss_vlan_msg nvm;
	struct nss_if_mac_address_set *nmas;

	if (!nss_ctx) {
	nss_warning("Can't get nss context\n");
	return NSS_TX_FAILURE;
	}

	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
	nss_warning("%px: received invalid interface %d", nss_ctx, vlan_if_num);
	return NSS_TX_FAILURE;
	}

	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_IF_MAC_ADDR_SET,
	sizeof(struct nss_if_mac_address_set), NULL, NULL);

	nmas = &nvm.msg.if_msg.mac_address_set;
	memcpy(nmas->mac_addr, addr, ETH_ALEN);
	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
	}
	EXPORT_SYMBOL(nss_vlan_tx_set_mac_addr_msg);

	/*
	* nss_vlan_tx_vsi_attach_msg
	* API to send VSI attach message to NSS FW
	*/
	nss_tx_status_t nss_vlan_tx_vsi_attach_msg(uint32_t vlan_if_num, uint32_t vsi)
	{
	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
	struct nss_vlan_msg nvm;

	if (!nss_ctx) {
	nss_warning("Can't get nss context\n");
	return NSS_TX_FAILURE;
	}

	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
	nss_warning("%px: received invalid interface %d\n", nss_ctx, vlan_if_num);
	return NSS_TX_FAILURE;
	}

	nvm.msg.if_msg.vsi_assign.vsi = vsi;
	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_IF_VSI_ASSIGN,
	sizeof(struct nss_if_vsi_assign), NULL, NULL);

	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
	}
	EXPORT_SYMBOL(nss_vlan_tx_vsi_attach_msg);

	/*
	* nss_vlan_tx_vsi_detach_msg
	* API to send VSI detach message to NSS FW
	*/
	nss_tx_status_t nss_vlan_tx_vsi_detach_msg(uint32_t vlan_if_num, uint32_t vsi)
	{
	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
	struct nss_vlan_msg nvm;

	if (!nss_ctx) {
	nss_warning("Can't get nss context\n");
	return NSS_TX_FAILURE;
	}

	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
	nss_warning("%px: received invalid interface %d\n", nss_ctx, vlan_if_num);
	return NSS_TX_FAILURE;
	}

	nvm.msg.if_msg.vsi_unassign.vsi = vsi;
	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_IF_VSI_UNASSIGN,
	sizeof(struct nss_if_vsi_unassign), NULL, NULL);

	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
	}
	EXPORT_SYMBOL(nss_vlan_tx_vsi_detach_msg);

	/*
	* nss_vlan_tx_add_tag_msg
	* API to send vlan add tag message to NSS FW
	*/
	nss_tx_status_t nss_vlan_tx_add_tag_msg(uint32_t vlan_if_num, uint32_t vlan_tag, uint32_t next_hop, uint32_t physical_dev)
	{
	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();
	struct nss_vlan_msg nvm;

	if (!nss_ctx) {
	nss_warning("Can't get nss context\n");
	return NSS_TX_FAILURE;
	}

	if (nss_vlan_verify_if_num(vlan_if_num) == false) {
	nss_warning("%px: received invalid interface %d\n", nss_ctx, vlan_if_num);
	return NSS_TX_FAILURE;
	}

	nvm.msg.add_tag.next_hop = next_hop;
	nvm.msg.add_tag.if_num = physical_dev;
	nvm.msg.add_tag.vlan_tag = vlan_tag;
	nss_vlan_msg_init(&nvm, vlan_if_num, NSS_VLAN_MSG_ADD_TAG,
	sizeof(struct nss_vlan_msg_add_tag), NULL, NULL);

	return nss_vlan_tx_msg_sync(nss_ctx, &nvm);
	}
	EXPORT_SYMBOL(nss_vlan_tx_add_tag_msg);

	/**
	* @brief Register to send/receive vlan messages to NSS
	*
	* @param if_num NSS interface number
	* @param vlan_data_callback Callback for vlan data
	* @param netdev netdevice associated with the vlan interface
	* @param features denotes the skb types supported by this interface
	*
	* @return nss_ctx_instance* NSS context
	*/
	struct nss_ctx_instance *nss_register_vlan_if(uint32_t if_num, nss_vlan_callback_t vlan_data_callback,
	struct net_device netdev, uint32_t features, void app_ctx)
	{
	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();

	nss_assert(nss_vlan_verify_if_num(if_num));

	nss_core_register_subsys_dp(nss_ctx, if_num, vlan_data_callback, NULL, app_ctx, netdev, features);

	nss_core_register_handler(nss_ctx, if_num, nss_vlan_handler, app_ctx);

	return nss_ctx;
	}
	EXPORT_SYMBOL(nss_register_vlan_if);

	/*
	* nss_unregister_vlan_if()
	*/
	void nss_unregister_vlan_if(uint32_t if_num)
	{
	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();

	nss_assert(nss_vlan_verify_if_num(if_num));

	nss_core_unregister_subsys_dp(nss_ctx, if_num);

	nss_core_unregister_handler(nss_ctx, if_num);
	}
	EXPORT_SYMBOL(nss_unregister_vlan_if);

	/*
	* nss_vlan_register_handler()
	* debugfs stats msg handler received on static vlan interface
	*/
	void nss_vlan_register_handler(void)
	{
	struct nss_ctx_instance *nss_ctx = nss_vlan_get_context();

	nss_info("nss_vlan_register_handler\n");
	nss_core_register_handler(nss_ctx, NSS_VLAN_INTERFACE, nss_vlan_handler, NULL);

	sema_init(&vlan_pvt.sem, 1);
	init_completion(&vlan_pvt.complete);
	}
	EXPORT_SYMBOL(nss_vlan_register_handler);