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[SCSI] libfc: add print of exchange id for debugging fc_fcp 

This is very helpful to match up the corresponding exchange to the actual I/O
described by the fsp, particularly when you do a side-by-side comparison of
the syslog with your trace.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Yi Zou 2010-11-30 16:19:15 -08:00 committed by James Bottomley
parent 11aa99001a
commit 9b90dc80ba
1 changed files with 14 additions and 2 deletions
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16
drivers/scsi/libfc/fc_libfc.h
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@ -66,9 +66,21 @@ extern unsigned int fc_debug_logging;
#define FC_FCP_DBG(pkt, fmt, args...) \
FC_CHECK_LOGGING(FC_FCP_LOGGING, \
printk(KERN_INFO "host%u: fcp: %6.6x: " fmt, \
{ \
if ((pkt)->seq_ptr) { \
struct fc_exch *_ep = NULL; \
_ep = fc_seq_exch((pkt)->seq_ptr); \
printk(KERN_INFO "host%u: fcp: %6.6x: " \
"xid %04x-%04x: " fmt, \
(pkt)->lp->host->host_no, \
pkt->rport->port_id, ##args))
(pkt)->rport->port_id, \
(_ep)->oxid, (_ep)->rxid, ##args); \
} else { \
printk(KERN_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, \