fcoe.h

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/*
 * Copyright(c) 2009 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 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,                \
               printk(KERN_INFO "fcoe: " fmt, ##args);)

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

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 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))

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_ */