/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright(c) 2009 Intel Corporation. All rights reserved.
 *
 * Maintained at www.Open-FCoE.org
 */

#ifndef _FCOE_H_
#define _FCOE_H_

#include <linux/skbuff.h>
#include <linux/kthread.h>

#define FCOE_MAX_QUEUE_DEPTH    256
#define FCOE_MIN_QUEUE_DEPTH    32

#define FCOE_WORD_TO_BYTE       4

#define FCOE_VERSION    "0.1"
#define FCOE_NAME       "fcoe"
#define FCOE_VENDOR     "Open-FCoE.org"

#define FCOE_MAX_LUN            0xFFFF
#define FCOE_MAX_FCP_TARGET     256

#define FCOE_MAX_OUTSTANDING_COMMANDS   1024

#define FCOE_MIN_XID            0x0000  /* the min xid supported by fcoe_sw */
#define FCOE_MAX_XID            0x0FFF  /* the max xid supported by fcoe_sw */

extern unsigned int fcoe_debug_logging;

#define FCOE_LOGGING        0x01 /* General logging, not categorized */
#define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */

#define FCOE_CHECK_LOGGING(LEVEL, CMD)                                  \
do {                                                                    \
        if (unlikely(fcoe_debug_logging & LEVEL))                       \
                do {                                                    \
                        CMD;                                            \
                } while (0);                                            \
} while (0)

#define FCOE_DBG(fmt, args...)                                          \
        FCOE_CHECK_LOGGING(FCOE_LOGGING,                                \
                           pr_info("fcoe: " fmt, ##args);)

#define FCOE_NETDEV_DBG(netdev, fmt, args...)                   \
        FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING,                 \
                           pr_info("fcoe: %s: " fmt,            \
                                   netdev->name, ##args);)

/**
 * struct fcoe_interface - A FCoE interface
 * @list:             Handle for a list of FCoE interfaces
 * @netdev:           The associated net device
 * @fcoe_packet_type: FCoE packet type
 * @fip_packet_type:  FIP packet type
 * @oem:              The offload exchange manager for all local port
 *                    instances associated with this port
 * @removed:          Indicates fcoe interface removed from net device
 * @priority:         Priority for the FCoE packet (DCB)
 * This structure is 1:1 with a net device.
 */
struct fcoe_interface {
        struct list_head   list;
        struct net_device  *netdev;
        struct net_device  *realdev;
        struct packet_type fcoe_packet_type;
        struct packet_type fip_packet_type;
        struct packet_type fip_vlan_packet_type;
        struct fc_exch_mgr *oem;
        u8      removed;
        u8      priority;
};

#define fcoe_to_ctlr(x)                                         \
        (struct fcoe_ctlr *)(((struct fcoe_ctlr *)(x)) - 1)

#define fcoe_from_ctlr(x)                       \
        ((struct fcoe_interface *)((x) + 1))

/**
 * fcoe_netdev() - Return the net device associated with a local port
 * @lport: The local port to get the net device from
 */
static inline struct net_device *fcoe_netdev(const struct fc_lport *lport)
{
        return ((struct fcoe_interface *)
                        ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
}

#endif /* _FCOE_H_ */