LXR linux/drivers/scsi/fcoe/fcoe.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright(c) 2009 Intel Corporation. All rights reserved.
   4 *
   5 * Maintained at www.Open-FCoE.org
   6 */
   7
   8#ifndef _FCOE_H_
   9#define _FCOE_H_
  10
  11#include <linux/skbuff.h>
  12#include <linux/kthread.h>
  13
  14#define FCOE_MAX_QUEUE_DEPTH    256
  15#define FCOE_MIN_QUEUE_DEPTH    32
  16
  17#define FCOE_WORD_TO_BYTE       4
  18
  19#define FCOE_VERSION    "0.1"
  20#define FCOE_NAME       "fcoe"
  21#define FCOE_VENDOR     "Open-FCoE.org"
  22
  23#define FCOE_MAX_LUN            0xFFFF
  24#define FCOE_MAX_FCP_TARGET     256
  25
  26#define FCOE_MAX_OUTSTANDING_COMMANDS   1024
  27
  28#define FCOE_MIN_XID            0x0000  /* the min xid supported by fcoe_sw */
  29#define FCOE_MAX_XID            0x0FFF  /* the max xid supported by fcoe_sw */
  30
  31extern unsigned int fcoe_debug_logging;
  32
  33#define FCOE_LOGGING        0x01 /* General logging, not categorized */
  34#define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */
  35
  36#define FCOE_CHECK_LOGGING(LEVEL, CMD)                                  \
  37do {                                                                    \
  38        if (unlikely(fcoe_debug_logging & LEVEL))                       \
  39                do {                                                    \
  40                        CMD;                                            \
  41                } while (0);                                            \
  42} while (0)
  43
  44#define FCOE_DBG(fmt, args...)                                          \
  45        FCOE_CHECK_LOGGING(FCOE_LOGGING,                                \
  46                           pr_info("fcoe: " fmt, ##args);)
  47
  48#define FCOE_NETDEV_DBG(netdev, fmt, args...)                   \
  49        FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING,                 \
  50                           pr_info("fcoe: %s: " fmt,            \
  51                                   netdev->name, ##args);)
  52
  53/**
  54 * struct fcoe_interface - A FCoE interface
  55 * @list:             Handle for a list of FCoE interfaces
  56 * @netdev:           The associated net device
  57 * @fcoe_packet_type: FCoE packet type
  58 * @fip_packet_type:  FIP packet type
  59 * @oem:              The offload exchange manager for all local port
  60 *                    instances associated with this port
  61 * @removed:          Indicates fcoe interface removed from net device
  62 * @priority:         Priority for the FCoE packet (DCB)
  63 * This structure is 1:1 with a net device.
  64 */
  65struct fcoe_interface {
  66        struct list_head   list;
  67        struct net_device  *netdev;
  68        struct net_device  *realdev;
  69        struct packet_type fcoe_packet_type;
  70        struct packet_type fip_packet_type;
  71        struct packet_type fip_vlan_packet_type;
  72        struct fc_exch_mgr *oem;
  73        u8      removed;
  74        u8      priority;
  75};
  76
  77#define fcoe_to_ctlr(x)                                         \
  78        (struct fcoe_ctlr *)(((struct fcoe_ctlr *)(x)) - 1)
  79
  80#define fcoe_from_ctlr(x)                       \
  81        ((struct fcoe_interface *)((x) + 1))
  82
  83/**
  84 * fcoe_netdev() - Return the net device associated with a local port
  85 * @lport: The local port to get the net device from
  86 */
  87static inline struct net_device *fcoe_netdev(const struct fc_lport *lport)
  88{
  89        return ((struct fcoe_interface *)
  90                        ((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
  91}
  92
  93#endif /* _FCOE_H_ */
  94