From: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
drivers/scsi/scsi_debug.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 9be2a6a00530..811d3005c0a5 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -167,6 +167,7 @@ static const char *sdebug_version_date = "20210520";
#define DEF_TUR_MS_TO_READY 0
#define DEF_UUID_CTL 0
#define JDELAY_OVERRIDDEN -9999
+#define DEF_ALUA_MPATH 0
/* Default parameters for ZBC drives */
#define DEF_ZBC_ZONE_SIZE_MB 128
@@ -884,6 +885,8 @@ static bool write_since_sync;
static bool sdebug_statistics = DEF_STATISTICS;
static bool sdebug_wp;
static bool sdebug_allow_restart;
+static unsigned int sdebug_alua_mpath = DEF_ALUA_MPATH;
+
static enum {
BLK_ZONED_NONE = 0,
BLK_ZONED_HA = 1,
@@ -2070,8 +2073,14 @@ static int resp_inquiry(struct scsi_cmnd *scp, struct sdebug_dev_info *devip)
arr[3] = 2; /* response_data_format==2 */
arr[4] = SDEBUG_LONG_INQ_SZ - 5;
arr[5] = (int)have_dif_prot; /* PROTECT bit */
- if (sdebug_vpd_use_hostno == 0)
- arr[5] |= 0x10; /* claim: implicit TPGS */
+ if (sdebug_vpd_use_hostno == 0) {
+ arr[5] |= 0x10;
+ } else {
+ if (sdebug_alua_mpath == 1)
+ arr[5] |= 0x11;
+ else
+ arr[5] |= 0x10;
+ }
arr[6] = 0x10; /* claim: MultiP */
/* arr[6] |= 0x40; ... claim: EncServ (enclosure services) */
arr[7] = 0xa; /* claim: LINKED + CMDQUE */
@@ -6643,6 +6652,7 @@ module_param_named(zone_max_open, sdeb_zbc_max_open, int, S_IRUGO);
module_param_named(zone_nr_conv, sdeb_zbc_nr_conv, int, S_IRUGO);
module_param_named(zone_size_mb, sdeb_zbc_zone_size_mb, int, S_IRUGO);
module_param_named(allow_restart, sdebug_allow_restart, bool, S_IRUGO | S_IWUSR);
+module_param_named(alua_mpath, sdebug_alua_mpath, int, S_IRUGO | S_IWUSR);
MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert");
MODULE_DESCRIPTION("SCSI debug adapter driver");
@@ -6722,6 +6732,8 @@ MODULE_PARM_DESC(zone_max_open, "Maximum number of open zones; [0] for no limit
MODULE_PARM_DESC(zone_nr_conv, "Number of conventional zones (def=1)");
MODULE_PARM_DESC(zone_size_mb, "Zone size in MiB (def=auto)");
MODULE_PARM_DESC(allow_restart, "Set scsi_device's allow_restart flag(def=0)");
+MODULE_PARM_DESC(alua_mpath,
+ "\t 1 = implicit alua \n \t 2 = Explicit & Implicit ALUA, \n \t 0 = No ALUA Support (Default) \n");
#define SDEBUG_INFO_LEN 256
static char sdebug_info[SDEBUG_INFO_LEN];
--
2.41.0.rc2
