Push things closer to path failover by implementing loop down and

gone device timers and zombie state entries. There are tunables
that can be used to select a number of parameters.

loop_down_limit - how long to wait for loop to come back up before
declaring
all devices dead (default 300 seconds)

gone_device_time- how long to wait for a device that has appeared
to leave the loop or fabric to reappear (default 30 seconds)

Internal tunables include (which should be externalized):

quick_boot_time- how long to wait when booting for loop to come up

change_is_bad- whether or not to accept devices with the same
WWNN/WWPN that reappear at a different PortID as being the 'same'
device.

Keen students of some of the subtle issues here will ask how
one can keep devices from being re-accepted at all (the answer
is to set a gone_device_time to zero- that effectively would
be the same thing).

1 files changed, 14 insertions, 1 deletions

diff --git a/sys/dev/isp/isp_stds.h b/sys/dev/isp/isp_stds.h
index a25f7745a549..bfacd14decd4 100644
--- a/sys/dev/isp/isp_stds.h
+++ b/sys/dev/isp/isp_stds.h
@@ -129,7 +129,7 @@ typedef struct {
 /*
  * RFT_ID Requet CT_IU
  *
- * Source: INCITS xxx-200x Generic Services- 5 Rev 8.5 Section 5.2.5.30
+ * Source: NCITS xxx-200x Generic Services- 5 Rev 8.5 Section 5.2.5.30
  */
 typedef struct {
 	ct_hdr_t	rftid_hdr;
@@ -138,6 +138,19 @@ typedef struct {
 	uint32_t	rftid_fc4types[8];
 } rft_id_t;
 
+/*
+ * FCP Response Code Definitions
+ * Source: NCITS T10, Project 1144D, Revision 07a (aka FCP2r07a)
+ */
+#define	FCP_RSPNS_CODE_OFFSET		3
+
+#define	FCP_RSPNS_TMF_DONE		0
+#define	FCP_RSPNS_DLBRSTX		1
+#define	FCP_RSPNS_BADCMND		2
+#define	FCP_RSPNS_EROFS			3
+#define	FCP_RSPNS_TMF_REJECT		4
+#define	FCP_RSPNS_TMF_FAILED		5
+
 
 /* unconverted miscellany */
 /*