2 * Copyright(c) 2009 Intel Corporation. All rights reserved.
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.
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
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.
17 * Maintained at www.Open-FCoE.org
23 #include <linux/skbuff.h>
24 #include <linux/kthread.h>
26 #define FCOE_MAX_QUEUE_DEPTH 256
27 #define FCOE_LOW_QUEUE_DEPTH 32
29 #define FCOE_WORD_TO_BYTE 4
31 #define FCOE_VERSION "0.1"
32 #define FCOE_NAME "fcoe"
33 #define FCOE_VENDOR "Open-FCoE.org"
35 #define FCOE_MAX_LUN 0xFFFF
36 #define FCOE_MAX_FCP_TARGET 256
38 #define FCOE_MAX_OUTSTANDING_COMMANDS 1024
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 */
44 * Max MTU for FCoE: 14 (FCoE header) + 24 (FC header) + 2112 (max FC payload)
45 * + 4 (FC CRC) + 4 (FCoE trailer) = 2158 bytes
49 unsigned int fcoe_debug_logging;
50 module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR);
51 MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels");
53 #define FCOE_LOGGING 0x01 /* General logging, not categorized */
54 #define FCOE_NETDEV_LOGGING 0x02 /* Netdevice logging */
56 #define FCOE_CHECK_LOGGING(LEVEL, CMD) \
58 if (unlikely(fcoe_debug_logging & LEVEL)) \
64 #define FCOE_DBG(fmt, args...) \
65 FCOE_CHECK_LOGGING(FCOE_LOGGING, \
66 printk(KERN_INFO "fcoe: " fmt, ##args);)
68 #define FCOE_NETDEV_DBG(netdev, fmt, args...) \
69 FCOE_CHECK_LOGGING(FCOE_NETDEV_LOGGING, \
70 printk(KERN_INFO "fcoe: %s: " fmt, \
71 netdev->name, ##args);)
74 * this percpu struct for fcoe
76 struct fcoe_percpu_s {
77 struct task_struct *thread;
78 struct sk_buff_head fcoe_rx_list;
79 struct page *crc_eof_page;
84 * an FCoE interface, 1:1 with netdev
86 struct fcoe_interface {
87 struct list_head list;
88 struct net_device *netdev;
89 struct packet_type fcoe_packet_type;
90 struct packet_type fip_packet_type;
91 struct fcoe_ctlr ctlr;
92 struct fc_exch_mgr *oem; /* offload exchange manager */
97 * the FCoE private structure that's allocated along with the
98 * Scsi_Host and libfc fc_lport structures
101 struct fcoe_interface *fcoe;
102 struct fc_lport *lport;
103 struct sk_buff_head fcoe_pending_queue;
104 u8 fcoe_pending_queue_active;
105 struct timer_list timer; /* queue timer */
106 struct work_struct destroy_work; /* to prevent rtnl deadlocks */
109 #define fcoe_from_ctlr(fip) container_of(fip, struct fcoe_interface, ctlr)
111 static inline struct net_device *fcoe_netdev(const struct fc_lport *lp)
113 return ((struct fcoe_port *)lport_priv(lp))->fcoe->netdev;
116 #endif /* _FCOE_H_ */