1/*
2 * Copyright(c) 2009 Intel Corporation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
16 *
17 * Maintained at www.Open-FCoE.org
18 */
19
20#ifndef _FCOE_H_
21#define _FCOE_H_
22
23#include <linux/skbuff.h>
24#include <linux/kthread.h>
25
26#define FCOE_MAX_QUEUE_DEPTH	256
27#define FCOE_MIN_QUEUE_DEPTH	32
28
29#define FCOE_WORD_TO_BYTE	4
30
31#define FCOE_VERSION	"0.1"
32#define FCOE_NAME	"fcoe"
33#define FCOE_VENDOR	"Open-FCoE.org"
34
35#define FCOE_MAX_LUN		0xFFFF
36#define FCOE_MAX_FCP_TARGET	256
37
38#define FCOE_MAX_OUTSTANDING_COMMANDS	1024
39
40#define FCOE_MIN_XID		0x0000	/* the min xid supported by fcoe_sw */
41#define FCOE_MAX_XID		0x0FFF	/* the max xid supported by fcoe_sw */
42
43extern unsigned int fcoe_debug_logging;
44
45#define FCOE_LOGGING	    0x01 /* General logging, not categorized */
46#define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */
47
48#define FCOE_CHECK_LOGGING(LEVEL, CMD)					\
49do {                                                            	\
50	if (unlikely(fcoe_debug_logging & LEVEL))			\
51		do {							\
52			CMD;						\
53		} while (0);						\
54} while (0)
55
56#define FCOE_DBG(fmt, args...)						\
57	FCOE_CHECK_LOGGING(FCOE_LOGGING,				\
58			   pr_info("fcoe: " fmt, ##args);)
59
60#define FCOE_NETDEV_DBG(netdev, fmt, args...)			\
61	FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING,			\
62			   pr_info("fcoe: %s: " fmt,		\
63				   netdev->name, ##args);)
64
65/**
66 * struct fcoe_interface - A FCoE interface
67 * @list:	      Handle for a list of FCoE interfaces
68 * @netdev:	      The associated net device
69 * @fcoe_packet_type: FCoE packet type
70 * @fip_packet_type:  FIP packet type
71 * @oem:	      The offload exchange manager for all local port
72 *		      instances associated with this port
73 * @removed:	      Indicates fcoe interface removed from net device
74 * @priority:	      Priority for the FCoE packet (DCB)
75 * This structure is 1:1 with a net device.
76 */
77struct fcoe_interface {
78	struct list_head   list;
79	struct net_device  *netdev;
80	struct net_device  *realdev;
81	struct packet_type fcoe_packet_type;
82	struct packet_type fip_packet_type;
83	struct fc_exch_mgr *oem;
84	u8	removed;
85	u8	priority;
86};
87
88#define fcoe_to_ctlr(x)						\
89	(struct fcoe_ctlr *)(((struct fcoe_ctlr *)(x)) - 1)
90
91#define fcoe_from_ctlr(x)			\
92	((struct fcoe_interface *)((x) + 1))
93
94/**
95 * fcoe_netdev() - Return the net device associated with a local port
96 * @lport: The local port to get the net device from
97 */
98static inline struct net_device *fcoe_netdev(const struct fc_lport *lport)
99{
100	return ((struct fcoe_interface *)
101			((struct fcoe_port *)lport_priv(lport))->priv)->netdev;
102}
103
104#endif /* _FCOE_H_ */
105