/*
 **************************************************************************
 * Copyright (c) 2019, 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.
 **************************************************************************
 */

/*
 * nss_vxlanmgr.h
 *	VxLAN manager header
 */
#ifndef __NSS_VXLANMGR_H
#define __NSS_VXLANMGR_H

/*
 * Compile messages for dynamic enable/disable
 */
#if defined(CONFIG_DYNAMIC_DEBUG)
#define nss_vxlanmgr_warn(s, ...) pr_debug("%s[%d]:" s, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define nss_vxlanmgr_info(s, ...) pr_debug("%s[%d]:" s, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#define nss_vxlanmgr_trace(s, ...) pr_debug("%s[%d]:" s, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#else /* CONFIG_DYNAMIC_DEBUG */
/*
 * Statically compile messages at different levels
 */
#if (NSS_VXLANMGR_DEBUG_LEVEL < 2)
#define nss_vxlanmgr_warn(s, ...)
#else
#define nss_vxlanmgr_warn(s, ...) pr_warn("%s[%d]:" s, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#endif

#if (NSS_VXLANMGR_DEBUG_LEVEL < 3)
#define nss_vxlanmgr_info(s, ...)
#else
#define nss_vxlanmgr_info(s, ...)   pr_notice("%s[%d]:" s, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#endif

#if (NSS_VXLANMGR_DEBUG_LEVEL < 4)
#define nss_vxlanmgr_trace(s, ...)
#else
#define nss_vxlanmgr_trace(s, ...)  pr_info("%s[%d]:" s, __FUNCTION__, __LINE__, ##__VA_ARGS__)
#endif
#endif /* CONFIG_DYNAMIC_DEBUG */

struct nss_vxlanmgr_ctx {
	struct list_head list;			/* vxlanmgr context list head */
	struct dentry *dentry;			/* debugfs entry for qca-nss-vxlanmgr */
	struct nss_ctx_instance *nss_ctx;	/* nss context for vxlan tunnel */
	uint32_t tun_count;			/* active vxlan tunnel count */
	spinlock_t tun_lock;			/* spinlock */
};

struct nss_vxlanmgr_tun_ctx {
	struct list_head head;			/* tunnel context list entry */
	struct net_device *dev;			/* tunnel netdevice pointer */
	struct dentry *dentry;			/* per tunnel debugfs entry */
	struct nss_vxlanmgr_ctx *vxlan_ctx;	/* pointer to vxlanmgr context */
	struct nss_vxlanmgr_tun_stats *stats;	/* tunnel statistics structure */
	uint32_t inner_ifnum;			/* inner node interface number */
	uint32_t outer_ifnum;			/* outer node interface number */
	uint32_t vni;				/* vnet identifier */
	uint16_t tunnel_flags;			/* vxlan tunnel flags */
	uint16_t flow_label;			/* flowlabel */
	uint16_t src_port_min;			/* minimum source port */
	uint16_t src_port_max;			/* maximum source port*/
	uint16_t dest_port;			/* destination port */
	uint8_t tos;				/* tos value */
	uint8_t ttl;				/* time to live */
};

extern int nss_vxlanmgr_tunnel_create(struct net_device *dev);
extern int nss_vxlanmgr_tunnel_destroy(struct net_device *dev);
extern int nss_vxlanmgr_tunnel_config(struct net_device *dev);
extern int nss_vxlanmgr_tunnel_deconfig(struct net_device *dev);

#endif /* __NSS_VXLANMGR_H */