Release 4.7 drivers/scsi/libfc/fc_libfc.h
/*
* 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 _FC_LIBFC_H_
#define _FC_LIBFC_H_
#define FC_LIBFC_LOGGING 0x01
/* General logging, not categorized */
#define FC_LPORT_LOGGING 0x02
/* lport layer logging */
#define FC_DISC_LOGGING 0x04
/* discovery layer logging */
#define FC_RPORT_LOGGING 0x08
/* rport layer logging */
#define FC_FCP_LOGGING 0x10
/* I/O path logging */
#define FC_EM_LOGGING 0x20
/* Exchange Manager logging */
#define FC_EXCH_LOGGING 0x40
/* Exchange/Sequence logging */
#define FC_SCSI_LOGGING 0x80
/* SCSI logging (mostly error handling) */
extern unsigned int fc_debug_logging;
#define FC_CHECK_LOGGING(LEVEL, CMD) \
do { \
if (unlikely(fc_debug_logging & LEVEL)) \
do { \
CMD; \
} while (0); \
} while (0)
#define FC_LIBFC_DBG(fmt, args...) \
FC_CHECK_LOGGING(FC_LIBFC_LOGGING, \
pr_info("libfc: " fmt, ##args))
#define FC_LPORT_DBG(lport, fmt, args...) \
FC_CHECK_LOGGING(FC_LPORT_LOGGING, \
pr_info("host%u: lport %6.6x: " fmt, \
(lport)->host->host_no, \
(lport)->port_id, ##args))
#define FC_DISC_DBG(disc, fmt, args...) \
FC_CHECK_LOGGING(FC_DISC_LOGGING, \
pr_info("host%u: disc: " fmt, \
fc_disc_lport(disc)->host->host_no, \
##args))
#define FC_RPORT_ID_DBG(lport, port_id, fmt, args...) \
FC_CHECK_LOGGING(FC_RPORT_LOGGING, \
pr_info("host%u: rport %6.6x: " fmt, \
(lport)->host->host_no, \
(port_id), ##args))
#define FC_RPORT_DBG(rdata, fmt, args...) \
FC_RPORT_ID_DBG((rdata)->local_port, (rdata)->ids.port_id, fmt, ##args)
#define FC_FCP_DBG(pkt, fmt, args...) \
FC_CHECK_LOGGING(FC_FCP_LOGGING, \
{ \
if ((pkt)->seq_ptr) { \
struct fc_exch *_ep = NULL; \
_ep = fc_seq_exch((pkt)->seq_ptr); \
pr_info("host%u: fcp: %6.6x: " \
"xid %04x-%04x: " fmt, \
(pkt)->lp->host->host_no, \
(pkt)->rport->port_id, \
(_ep)->oxid, (_ep)->rxid, ##args); \
} else { \
pr_info("host%u: fcp: %6.6x: " fmt, \
(pkt)->lp->host->host_no, \
(pkt)->rport->port_id, ##args); \
} \
})
#define FC_EXCH_DBG(exch, fmt, args...) \
FC_CHECK_LOGGING(FC_EXCH_LOGGING, \
pr_info("host%u: xid %4x: " fmt, \
(exch)->lp->host->host_no, \
exch->xid, ##args))
#define FC_SCSI_DBG(lport, fmt, args...) \
FC_CHECK_LOGGING(FC_SCSI_LOGGING, \
pr_info("host%u: scsi: " fmt, \
(lport)->host->host_no, ##args))
/*
* FC-4 Providers.
*/
extern struct fc4_prov *fc_active_prov[]; /* providers without recv */
extern struct fc4_prov *fc_passive_prov[]; /* providers with recv */
extern struct mutex fc_prov_mutex; /* lock over table changes */
extern struct fc4_prov fc_rport_t0_prov; /* type 0 provider */
extern struct fc4_prov fc_lport_els_prov; /* ELS provider */
extern struct fc4_prov fc_rport_fcp_init; /* FCP initiator provider */
/*
* Set up direct-data placement for this I/O request
*/
void fc_fcp_ddp_setup(struct fc_fcp_pkt *fsp, u16 xid);
void fc_fcp_ddp_done(struct fc_fcp_pkt *fsp);
/*
* Module setup functions
*/
int fc_setup_exch_mgr(void);
void fc_destroy_exch_mgr(void);
int fc_setup_rport(void);
void fc_destroy_rport(void);
int fc_setup_fcp(void);
void fc_destroy_fcp(void);
/*
* Internal libfc functions
*/
const char *fc_els_resp_type(struct fc_frame *);
extern void fc_fc4_add_lport(struct fc_lport *);
extern void fc_fc4_del_lport(struct fc_lport *);
extern void fc_fc4_conf_lport_params(struct fc_lport *, enum fc_fh_type);
/*
* Copies a buffer into an sg list
*/
u32 fc_copy_buffer_to_sglist(void *buf, size_t len,
struct scatterlist *sg,
u32 *nents, size_t *offset,
u32 *crc);
#endif /* _FC_LIBFC_H_ */
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