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Robert Love8866a5d2009-11-03 11:45:58 -08001/*
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 _FC_LIBFC_H_
21#define _FC_LIBFC_H_
22
23#define FC_LIBFC_LOGGING 0x01 /* General logging, not categorized */
24#define FC_LPORT_LOGGING 0x02 /* lport layer logging */
Robert Love3a3b42b2009-11-03 11:47:39 -080025#define FC_DISC_LOGGING 0x04 /* discovery layer logging */
Robert Love8866a5d2009-11-03 11:45:58 -080026#define FC_RPORT_LOGGING 0x08 /* rport layer logging */
Robert Love3a3b42b2009-11-03 11:47:39 -080027#define FC_FCP_LOGGING 0x10 /* I/O path logging */
28#define FC_EM_LOGGING 0x20 /* Exchange Manager logging */
29#define FC_EXCH_LOGGING 0x40 /* Exchange/Sequence logging */
30#define FC_SCSI_LOGGING 0x80 /* SCSI logging (mostly error handling) */
Robert Love8866a5d2009-11-03 11:45:58 -080031
32extern unsigned int fc_debug_logging;
33
Robert Love3a3b42b2009-11-03 11:47:39 -080034#define FC_CHECK_LOGGING(LEVEL, CMD) \
35 do { \
36 if (unlikely(fc_debug_logging & LEVEL)) \
37 do { \
38 CMD; \
39 } while (0); \
40 } while (0)
Robert Love8866a5d2009-11-03 11:45:58 -080041
42#define FC_LIBFC_DBG(fmt, args...) \
43 FC_CHECK_LOGGING(FC_LIBFC_LOGGING, \
44 printk(KERN_INFO "libfc: " fmt, ##args))
45
46#define FC_LPORT_DBG(lport, fmt, args...) \
47 FC_CHECK_LOGGING(FC_LPORT_LOGGING, \
48 printk(KERN_INFO "host%u: lport %6x: " fmt, \
49 (lport)->host->host_no, \
50 fc_host_port_id((lport)->host), ##args))
51
Robert Love3a3b42b2009-11-03 11:47:39 -080052#define FC_DISC_DBG(disc, fmt, args...) \
53 FC_CHECK_LOGGING(FC_DISC_LOGGING, \
54 printk(KERN_INFO "host%u: disc: " fmt, \
55 (disc)->lport->host->host_no, \
Robert Love8866a5d2009-11-03 11:45:58 -080056 ##args))
57
58#define FC_RPORT_ID_DBG(lport, port_id, fmt, args...) \
59 FC_CHECK_LOGGING(FC_RPORT_LOGGING, \
60 printk(KERN_INFO "host%u: rport %6x: " fmt, \
61 (lport)->host->host_no, \
62 (port_id), ##args))
63
64#define FC_RPORT_DBG(rdata, fmt, args...) \
65 FC_RPORT_ID_DBG((rdata)->local_port, (rdata)->ids.port_id, fmt, ##args)
66
67#define FC_FCP_DBG(pkt, fmt, args...) \
68 FC_CHECK_LOGGING(FC_FCP_LOGGING, \
69 printk(KERN_INFO "host%u: fcp: %6x: " fmt, \
70 (pkt)->lp->host->host_no, \
71 pkt->rport->port_id, ##args))
72
73#define FC_EXCH_DBG(exch, fmt, args...) \
74 FC_CHECK_LOGGING(FC_EXCH_LOGGING, \
75 printk(KERN_INFO "host%u: xid %4x: " fmt, \
76 (exch)->lp->host->host_no, \
77 exch->xid, ##args))
78
79#define FC_SCSI_DBG(lport, fmt, args...) \
Robert Love3a3b42b2009-11-03 11:47:39 -080080 FC_CHECK_LOGGING(FC_SCSI_LOGGING, \
Robert Love8866a5d2009-11-03 11:45:58 -080081 printk(KERN_INFO "host%u: scsi: " fmt, \
82 (lport)->host->host_no, ##args))
83
84/*
85 * Set up direct-data placement for this I/O request
86 */
87void fc_fcp_ddp_setup(struct fc_fcp_pkt *fsp, u16 xid);
88
89/*
90 * Module setup functions
91 */
92int fc_setup_exch_mgr(void);
93void fc_destroy_exch_mgr(void);
94int fc_setup_rport(void);
95void fc_destroy_rport(void);
Robert Love93e6d5a2009-11-03 11:46:03 -080096int fc_setup_fcp(void);
97void fc_destroy_fcp(void);
Robert Love8866a5d2009-11-03 11:45:58 -080098
99/*
100 * Internal libfc functions
101 */
102const char *fc_els_resp_type(struct fc_frame *);
103
Robert Love58682872009-11-03 11:47:28 -0800104/*
105 * Copies a buffer into an sg list
106 */
107u32 fc_copy_buffer_to_sglist(void *buf, size_t len,
108 struct scatterlist *sg,
109 u32 *nents, size_t *offset,
110 enum km_type km_type, u32 *crc);
111
Robert Love8866a5d2009-11-03 11:45:58 -0800112#endif /* _FC_LIBFC_H_ */