core/sme/src/nan/nan_api.c

/*
 * Copyright (c) 2014-2018 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 <sir_common.h>
#include <ani_global.h>
#include "sme_api.h"
#include "csr_inside_api.h"
#include "sme_inside.h"
#include "nan_api.h"
#include "cfg_api.h"
#include "wma_types.h"

/**
 * sme_nan_register_callback() -
 * This function gets called when HDD wants register nan rsp callback with
 * sme layer.
 *
 * @hHal: Hal handle
 * @callback: which needs to be registered.
 *
 * Return: void
 */
void sme_nan_register_callback(tHalHandle hHal, nan_callback callback)
{
	tpAniSirGlobal pMac = NULL;

	if (NULL == hHal) {
		QDF_TRACE(QDF_MODULE_ID_SME, QDF_TRACE_LEVEL_ERROR,
			  FL("hHal is not valid"));
		return;
	}
	pMac = PMAC_STRUCT(hHal);
	pMac->sme.nan_callback = callback;
}

/**
 * sme_nan_deregister_callback() - NAN De-register cb function
 * @h_hal: Hal handle
 *
 * De-register nan rsp callback with sme layer.
 *
 * Return: void
 */
void sme_nan_deregister_callback(tHalHandle h_hal)
{
	tpAniSirGlobal pmac;

	if (!h_hal) {
		QDF_TRACE(QDF_MODULE_ID_SME, QDF_TRACE_LEVEL_ERROR,
			  FL("hHal is not valid"));
		return;
	}
	pmac = PMAC_STRUCT(h_hal);
	pmac->sme.nan_callback = NULL;
}


/**
 * sme_nan_request() -
 * This function gets called when HDD receives NAN vendor command
 * from userspace
 *
 * @input: Nan Request structure ptr
 *
 * Return: QDF_STATUS
 */
QDF_STATUS sme_nan_request(tpNanRequestReq input)
{
	struct scheduler_msg msg = {0};
	tpNanRequest data;
	size_t data_len;

	data_len = sizeof(tNanRequest) + input->request_data_len;
	data = qdf_mem_malloc(data_len);

	if (data == NULL) {
		QDF_TRACE(QDF_MODULE_ID_SME, QDF_TRACE_LEVEL_ERROR,
			  FL("Memory allocation failure"));
		return QDF_STATUS_E_NOMEM;
	}
	data->request_data_len = input->request_data_len;
	if (input->request_data_len) {
		qdf_mem_copy(data->request_data,
			     input->request_data, input->request_data_len);
	}

	msg.type = WMA_NAN_REQUEST;
	msg.reserved = 0;
	msg.bodyptr = data;

	if (QDF_STATUS_SUCCESS != scheduler_post_msg(QDF_MODULE_ID_WMA,
						      &msg)) {
		QDF_TRACE(QDF_MODULE_ID_SME, QDF_TRACE_LEVEL_ERROR,
			"Not able to post WMA_NAN_REQUEST message to WMA");
		qdf_mem_free(data);
		return QDF_STATUS_SUCCESS;
	}

	return QDF_STATUS_SUCCESS;
}

/**
 * sme_nan_event() -
 * This callback function will be called when SME received eWNI_SME_NAN_EVENT
 * event from WMA
 *
 * @hHal: HAL handle for device
 * @pMsg: Message body passed from WMA; includes NAN header
 *
 * Return: QDF_STATUS
 */
QDF_STATUS sme_nan_event(tHalHandle hHal, void *pMsg)
{
	tpAniSirGlobal pMac = PMAC_STRUCT(hHal);
	QDF_STATUS status = QDF_STATUS_SUCCESS;

	if (NULL == pMsg) {
		QDF_TRACE(QDF_MODULE_ID_SME, QDF_TRACE_LEVEL_ERROR,
			  FL("msg ptr is NULL"));
		status = QDF_STATUS_E_FAILURE;
	} else {
		QDF_TRACE(QDF_MODULE_ID_SME, QDF_TRACE_LEVEL_DEBUG,
			  FL("SME: Received sme_nan_event"));
		if (pMac->sme.nan_callback) {
			pMac->sme.nan_callback(pMac->hdd_handle,
					      (tSirNanEvent *) pMsg);
		}
	}

	return status;
}