[SCSI] zfcp: enhancement of zfcp debug features

Debug features (DBFs) els_dbf, cmd_dbf and abt_dbf were removed and
san_dbf, hba_dbf and scsi_dbf were introduced. The erp_dbf did not
change.
The new traces improve debugging of problems with zfcp, scsi-stack,
multipath and hardware in the SAN. san_dbf traces things like ELS and
CT commands, hba_dbf saves HBA specific information of requests, and
scsi_dbf saves FCP and SCSI specific information of requests. Common
to all new DBFs is that they provide a so called structured view. This
significantly improves readability of the traces.

Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h
index 07140dfda2a..57ce0706007 100644
--- a/drivers/s390/scsi/zfcp_fsf.h
+++ b/drivers/s390/scsi/zfcp_fsf.h
@@ -116,6 +116,7 @@
 #define FSF_INVALID_COMMAND_OPTION              0x000000E5
 /* #define FSF_ERROR                             0x000000FF  */
 
+#define FSF_PROT_STATUS_QUAL_SIZE               16
 #define FSF_STATUS_QUALIFIER_SIZE               16
 
 /* FSF status qualifier, recommendations */
@@ -311,6 +312,7 @@ struct fsf_qual_locallink_error {
 } __attribute__ ((packed));
 
 union fsf_prot_status_qual {
+        u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)];
         struct fsf_qual_version_error   version_error;
         struct fsf_qual_sequence_error  sequence_error;
         struct fsf_qual_locallink_error locallink_error;
@@ -331,6 +333,7 @@ union fsf_status_qual {
         u8  byte[FSF_STATUS_QUALIFIER_SIZE];
         u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)];
         u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)];
+        u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)];
         struct fsf_queue_designator fsf_queue_designator;
 } __attribute__ ((packed));