/* Copyright (c) 2012-2017, 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
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef _IPA_ODO_BRIDGE_H_
#define _IPA_ODO_BRIDGE_H_

#include <linux/ipa.h>

/**
 * struct odu_bridge_params - parameters for odu bridge initialization API
 *
 * @netdev_name: network interface name
 * @priv: private data that will be supplied to client's callback
 * @tx_dp_notify: callback for handling SKB. the following event are supported:
 *	IPA_WRITE_DONE:	will be called after client called to odu_bridge_tx_dp()
 *			Client is expected to free the skb.
 *	IPA_RECEIVE:	will be called for delivering skb to APPS.
 *			Client is expected to deliver the skb to network stack.
 * @send_dl_skb: callback for sending skb on downlink direction to adapter.
 *		Client is expected to free the skb.
 * @device_ethaddr: device Ethernet address in network order.
 * @ipa_desc_size: IPA Sys Pipe Desc Size
 */
struct odu_bridge_params {
	const char *netdev_name;
	void *priv;
	ipa_notify_cb tx_dp_notify;
	int (*send_dl_skb)(void *priv, struct sk_buff *skb);
	u8 device_ethaddr[ETH_ALEN];
	u32 ipa_desc_size;
};

/**
 * struct ipa_bridge_init_params - parameters for IPA bridge initialization API
 *
 * @info: structure contains initialization information
 * @wakeup_request: callback to client to indicate there is downlink data
 *	available. Client is expected to call ipa_bridge_resume() to start
 *	receiving data
 */
struct ipa_bridge_init_params {
	struct odu_bridge_params info;
	void (*wakeup_request)(void *);
};

#ifdef CONFIG_IPA3

int ipa_bridge_init(struct ipa_bridge_init_params *params, u32 *hdl);

int ipa_bridge_connect(u32 hdl);

int ipa_bridge_set_perf_profile(u32 hdl, u32 bandwidth);

int ipa_bridge_disconnect(u32 hdl);

int ipa_bridge_suspend(u32 hdl);

int ipa_bridge_resume(u32 hdl);

int ipa_bridge_tx_dp(u32 hdl, struct sk_buff *skb,
	struct ipa_tx_meta *metadata);

int ipa_bridge_cleanup(u32 hdl);

#else

static inline int ipa_bridge_init(struct odu_bridge_params *params, u32 *hdl)
{
	return -EPERM;
}

static inline int ipa_bridge_connect(u32 hdl)
{
	return -EPERM;
}

static inline int ipa_bridge_set_perf_profile(u32 hdl, u32 bandwidth)
{
	return -EPERM;
}

static inline int ipa_bridge_disconnect(u32 hdl)
{
	return -EPERM;
}

static inline int ipa_bridge_suspend(u32 hdl)
{
	return -EPERM;
}

static inline int ipa_bridge_resume(u32 hdl)
{
	return -EPERM;
}

static inline int ipa_bridge_tx_dp(u32 hdl, struct sk_buff *skb,
struct ipa_tx_meta *metadata)
{
	return -EPERM;
}

static inline int ipa_bridge_cleanup(u32 hdl)
{
	return -EPERM;
}

#endif /* CONFIG_IPA3 */

/* Below API is deprecated. Please use the API above */
# if defined CONFIG_IPA || defined CONFIG_IPA3

int odu_bridge_init(struct odu_bridge_params *params);

int odu_bridge_connect(void);

int odu_bridge_disconnect(void);

int odu_bridge_tx_dp(struct sk_buff *skb, struct ipa_tx_meta *metadata);

int odu_bridge_cleanup(void);

#else

static inline int odu_bridge_init(struct odu_bridge_params *params)
{
	return -EPERM;
}

static inline int odu_bridge_disconnect(void)
{
	return -EPERM;
}

static inline int odu_bridge_connect(void)
{
	return -EPERM;
}

static inline int odu_bridge_tx_dp(struct sk_buff *skb,
						struct ipa_tx_meta *metadata)
{
	return -EPERM;
}

static inline int odu_bridge_cleanup(void)
{
	return -EPERM;
}

#endif /* CONFIG_IPA || defined CONFIG_IPA3 */

#endif /* _IPA_ODO_BRIDGE_H */