[PATCH 05/22] libfc: change debug messages to give host number.

Robert Love
2009-07-30T00:04:11Z

From: Joe Eykholt <jeykholt@cisco.com>

libfc debug messages currently show 'lport: <fc-id>:'
wher <fc-id> is the hex assigned port-id. When the lport
is logged off, that will be zero, so its hard to distinguish
which instance is involved. The FC-ID can change
if the port is re-patched or changes VSANs.

Two lports may even have the same FC-ID if connected to isolated SANs.

Change the debug messages to print the SCSI host number "hostN:",
which will not change for the life of the lport.
Still show the FC_ID on lport messages.

Also, add a macro to FC_RPORT_ID_DBG for rport debugging where there's
no rdata structure involved. It takes the lport and port_id as parameters.
Use this in fc_rport_recv_plogi_req() and fc_rport_recv_logo_req().

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
---

include/scsi/libfc.h | 36 ++++++++++++++++++++----------------
1 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index ef04a2c..efdb6ba 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -59,47 +59,51 @@ do { \

#define FC_LPORT_DBG(lport, fmt, args...) \
FC_CHECK_LOGGING(FC_LPORT_LOGGING, \
- printk(KERN_INFO "lport: %6x: " fmt, \
- fc_host_port_id(lport->host), ##args))
+ printk(KERN_INFO "host%u: lport %6x: " fmt, \
+ (lport)->host->host_no, \
+ fc_host_port_id((lport)->host), ##args))

#define FC_DISC_DBG(disc, fmt, args...) \
FC_CHECK_LOGGING(FC_DISC_LOGGING, \
- printk(KERN_INFO "disc: %6x: " fmt, \
- fc_host_port_id(disc->lport->host), \
+ printk(KERN_INFO "host%u: disc: " fmt, \
+ (disc)->lport->host->host_no, \
##args))

+#define FC_RPORT_ID_DBG(lport, port_id, fmt, args...) \
+ FC_CHECK_LOGGING(FC_RPORT_LOGGING, \
+ printk(KERN_INFO "host%u: rport %6x: " fmt, \
+ (lport)->host->host_no, \
+ (port_id), ##args))
+
#define FC_RPORT_DBG(rport, fmt, args...) \
do { \
struct fc_rport_libfc_priv *rdata = rport->dd_data; \
struct fc_lport *lport = rdata->local_port; \
- FC_CHECK_LOGGING(FC_RPORT_LOGGING, \
- printk(KERN_INFO "rport: %6x: %6x: " fmt, \
- fc_host_port_id(lport->host), \
- rport->port_id, ##args)); \
+ FC_RPORT_ID_DBG(lport, rport->port_id, fmt, ##args); \
} while (0)

#define FC_FCP_DBG(pkt, fmt, args...) \
FC_CHECK_LOGGING(FC_FCP_LOGGING, \
- printk(KERN_INFO "fcp: %6x: %6x: " fmt, \
- fc_host_port_id(pkt->lp->host), \
+ printk(KERN_INFO "host%u: fcp: %6x: " fmt, \
+ (pkt)->lp->host->host_no, \
pkt->rport->port_id, ##args))

#define FC_EM_DBG(em, fmt, args...) \
FC_CHECK_LOGGING(FC_EM_LOGGING, \
- printk(KERN_INFO "em: %6x: " fmt, \
- fc_host_port_id(em->lp->host), \
+ printk(KERN_INFO "host%u: em: " fmt, \
+ (em)->lp->host->host_no, \
##args))

#define FC_EXCH_DBG(exch, fmt, args...) \
FC_CHECK_LOGGING(FC_EXCH_LOGGING, \
- printk(KERN_INFO "exch: %6x: %4x: " fmt, \
- fc_host_port_id(exch->lp->host), \
+ printk(KERN_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, \
- printk(KERN_INFO "scsi: %6x: " fmt, \
- fc_host_port_id(lport->host), ##args))
+ printk(KERN_INFO "host%u: scsi: " fmt, \
+ (lport)->host->host_no, ##args))

/*
* libfc error codes