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Date: Fri, 23 Jan 2009 17:56:32 -0800
From: "Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To: "Linux-iSCSI.org Target Dev"
<linux-iscsi-target-dev@...glegroups.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
linux-scsi <linux-scsi@...r.kernel.org>
Subject: [PATCH 1/6] [Target_Core_Mod]: Add support for configurable EVPD
Unit Serial Numbers
>>From 4578472235a71a32e8d3b02b8d729787344e8c53 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@...ux-iscsi.org>
Date: Fri, 23 Jan 2009 17:15:15 -0800
Subject: [PATCH 1/6] [Target_Core_Mod]: Add support for configurable EVPD Unit Serial Numbers
This patch updates transport_generic_emulate_inquiry() to use
se_subsystem_dev_t->t10_wwn information when building an INQUIRY
EVPD response. This code is used by the virtual hba/block subsystem
drivers (IBLOCK, FILEIO and RAMDISK, (but not target_core_mod/pSCSI)
with target_core_mod/ConfigFS $STORAGE_OBJECTS
This patch also adds se_subsystem_dev_t->su_dev_flags the following two defines:
+ * se_subsystem_dev_t->su_dev_flags
+*/
+#define SDF_FIRMWARE_EVPD_UNIT_SERIAL 0x00000001
+#define SDF_EMULATED_EVPD_UNIT_SERIAL 0x00000002
SDF_FIRMWARE_EVPD_UNIT_SERIAL is used when the EVPD is actually coming from
firmware (or emulated below target_core_mod/pSCSI in drivers/scsi), and
SDF_EMULATED_EVPD_UNIT_SERIAL is used by Target_Core_Mod/ConfigFS.
Signed-off-by: Nicholas A. Bellinger <nab@...ux-iscsi.org>
---
drivers/lio-core/target_core_base.h | 2 ++
drivers/lio-core/target_core_transport.c | 20 +++++++++++---------
drivers/lio-core/target_core_transport.h | 13 +++++++++----
3 files changed, 22 insertions(+), 13 deletions(-)
diff --git a/drivers/lio-core/target_core_base.h b/drivers/lio-core/target_core_base.h
index 99d2373..5654018 100644
--- a/drivers/lio-core/target_core_base.h
+++ b/drivers/lio-core/target_core_base.h
@@ -362,6 +362,7 @@ typedef struct se_task_s {
} ____cacheline_aligned se_task_t;
#define TASK_CMD(task) ((struct se_cmd_s *)task->task_se_cmd)
+#define TASK_DEV(task) ((struct se_device_s *)task->se_dev)
typedef struct se_transform_info_s {
int ti_set_counts;
@@ -549,6 +550,7 @@ typedef struct se_dev_attrib_s {
} ____cacheline_aligned se_dev_attrib_t;
typedef struct se_subsystem_dev_s {
+ u32 su_dev_flags;
struct se_hba_s *se_dev_hba;
struct se_device_s *se_dev_ptr;
se_dev_attrib_t se_dev_attrib;
diff --git a/drivers/lio-core/target_core_transport.c b/drivers/lio-core/target_core_transport.c
index 1cc0a59..c83ed5d 100644
--- a/drivers/lio-core/target_core_transport.c
+++ b/drivers/lio-core/target_core_transport.c
@@ -3988,13 +3988,13 @@ extern int transport_generic_emulate_inquiry (
unsigned char type,
unsigned char *prod,
unsigned char *version,
- unsigned char *se_location,
- unsigned char *sub_sn)
+ unsigned char *se_location)
{
- u32 len = 0;
+ se_device_t *dev = SE_DEV(cmd);
unsigned char *dst = (unsigned char *) T_TASK(cmd)->t_task_buf;
unsigned char *cdb = T_TASK(cmd)->t_task_cdb;
unsigned char *iqn_sn, buf[EVPD_BUF_LEN];
+ u32 len = 0;
memset(dst, 0, cmd->data_length);
memset(buf, 0, EVPD_BUF_LEN);
@@ -4028,8 +4028,9 @@ extern int transport_generic_emulate_inquiry (
break;
case 0x80: /* unit serial number */
buf[1] = 0x80;
- if (sub_sn)
- len += sprintf((unsigned char *)&buf[4], "%s", sub_sn);
+ if (dev->se_sub_dev->su_dev_flags & SDF_EMULATED_EVPD_UNIT_SERIAL)
+ len += sprintf((unsigned char *)&buf[4], "%s",
+ &DEV_T10_WWN(dev)->unit_serial[0]);
else {
iqn_sn = transport_get_iqn_sn();
len += sprintf((unsigned char *)&buf[4], "%s:%s",
@@ -4046,12 +4047,13 @@ extern int transport_generic_emulate_inquiry (
len += sprintf((unsigned char *)&buf[8], "%-8s", "LIO-ORG");
- if (sub_sn)
- len += sprintf((unsigned char *)&buf[16], "%s:%s", prod, sub_sn);
+ if (dev->se_sub_dev->su_dev_flags & SDF_EMULATED_EVPD_UNIT_SERIAL)
+ len += sprintf((unsigned char *)&buf[16], "%s:%s", prod,
+ &DEV_T10_WWN(dev)->unit_serial[0]);
else {
iqn_sn = transport_get_iqn_sn();
- len += sprintf((unsigned char *)&buf[16], "%s:%s:%s", prod,
- iqn_sn, se_location);
+ len += sprintf((unsigned char *)&buf[16], "%s:%s:%s",
+ prod, iqn_sn, se_location);
}
buf[7] = len; /* Identifier Length */
len += 4;
diff --git a/drivers/lio-core/target_core_transport.h b/drivers/lio-core/target_core_transport.h
index 5087280..27a127c 100644
--- a/drivers/lio-core/target_core_transport.h
+++ b/drivers/lio-core/target_core_transport.h
@@ -69,11 +69,17 @@
#define TRANSPORT_TIMEOUT_TYPE_TAPE 600
#define TRANSPORT_TIMEOUT_TYPE_OTHER 300
-/* For iscsi_task->task_state_flags */
+/* For se_task->task_state_flags */
#define TSF_EXCEPTION_CLEARED 0x01
/*
- * iSCSI Device related Transport flags
+ * se_subsystem_dev_t->su_dev_flags
+*/
+#define SDF_FIRMWARE_EVPD_UNIT_SERIAL 0x00000001
+#define SDF_EMULATED_EVPD_UNIT_SERIAL 0x00000002
+
+/*
+ * se_device_t->dev_flags
*/
#define DF_READAHEAD_ACTIVE 0x00000001
#define DF_TRANSPORT_DMA_ALLOC 0x00000002
@@ -93,7 +99,6 @@
#define DA_STATUS_MAX_SECTORS_MAX 8192
#define SE_MODE_PAGE_BUF 512
-#define SE_LVM_UUID_LEN 48 /* Must match PARAM_LVM_UUID_LEN */
#define SE_UDEV_PATH_LEN 256 /* Must match PARAM_UDEV_PATH_LEN */
#define MOD_MAX_SECTORS(ms, bs) (ms % (PAGE_SIZE / bs))
@@ -161,7 +166,7 @@ extern void __transport_stop_task_timer (struct se_task_s *, unsigned long *);
extern void transport_stop_task_timer (struct se_task_s *);
extern void transport_stop_all_task_timers (struct se_cmd_s *);
extern int transport_execute_tasks (struct se_cmd_s *);
-extern int transport_generic_emulate_inquiry (struct se_cmd_s *, unsigned char, unsigned char *, unsigned char *, unsigned char *, unsigned char *);
+extern int transport_generic_emulate_inquiry (struct se_cmd_s *, unsigned char, unsigned char *, unsigned char *, unsigned char *);
extern int transport_generic_emulate_readcapacity (struct se_cmd_s *, u32, u32);
extern int transport_generic_emulate_readcapacity_16 (struct se_cmd_s *, unsigned long long, u32);
extern int transport_generic_emulate_modesense (struct se_cmd_s *, unsigned char *, unsigned char *, int, int);
--
1.5.4.1
--
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