From: Hannes Reinecke <hare@suse.de>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: James Bottomley <james.bottomley@hansenpartnership.com>,
Christoph Hellwig <hch@lst.de>,
John Garry <john.garry@huawei.com>,
linux-scsi@vger.kernel.org, Hannes Reinecke <hare@suse.de>
Subject: [PATCH 06/31] scsi: use real inquiry data when initialising devices
Date: Mon, 22 Feb 2021 14:23:40 +0100 [thread overview]
Message-ID: <20210222132405.91369-7-hare@suse.de> (raw)
In-Reply-To: <20210222132405.91369-1-hare@suse.de>
Use dummy inquiry data when initialising devices and not just
some 'nullnullnull' string.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/scsi/scsi_scan.c | 34 +++++++++++++++++++++++++---------
1 file changed, 25 insertions(+), 9 deletions(-)
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 9af50e6f94c4..11aec38250ca 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -81,7 +81,27 @@
#define SCSI_SCAN_TARGET_PRESENT 1
#define SCSI_SCAN_LUN_PRESENT 2
-static const char *scsi_null_device_strs = "nullnullnullnull";
+/*
+ * Dummy inquiry for virtual LUNs:
+ *
+ * standard INQUIRY: [qualifier indicates no connected LU]
+ * PQual=1 Device_type=31 RMB=0 LU_CONG=0 version=0x05 [SPC-3]
+ * [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=2
+ * SCCS=0 ACC=0 TPGS=0 3PC=0 Protect=0 [BQue=0]
+ * EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0
+ * [RelAdr=0] WBus16=0 Sync=0 [Linked=0] [TranDis=0] CmdQue=0
+ * length=36 (0x24) Peripheral device type: no physical device on this lu
+ * Vendor identification: LINUX
+ * Product identification: VIRTUALLUN
+ * Product revision level: 1.0
+ */
+static const unsigned char scsi_null_inquiry[36] = {
+ 0x3f, 0x00, 0x05, 0x02, 0x1f, 0x00, 0x00, 0x00,
+ 0x4c, 0x49, 0x4e, 0x55, 0x58, 0x20, 0x20, 0x20,
+ 0x56, 0x49, 0x52, 0x54, 0x55, 0x41, 0x4c, 0x4c,
+ 0x55, 0x4e, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+ 0x31, 0x2e, 0x30, 0x20
+};
#define MAX_SCSI_LUNS 512
@@ -224,9 +244,10 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
if (!sdev)
goto out;
- sdev->vendor = scsi_null_device_strs;
- sdev->model = scsi_null_device_strs;
- sdev->rev = scsi_null_device_strs;
+ sdev->type = scsi_null_inquiry[0] & 0x1f;
+ sdev->vendor = scsi_null_inquiry + 8;
+ sdev->model = scsi_null_inquiry + 16;
+ sdev->rev = scsi_null_inquiry + 32;
sdev->host = shost;
sdev->queue_ramp_up_period = SCSI_DEFAULT_RAMP_UP_PERIOD;
sdev->id = starget->id;
@@ -253,11 +274,6 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
* slave_configure function */
sdev->max_device_blocked = SCSI_DEFAULT_DEVICE_BLOCKED;
- /*
- * Some low level driver could use device->type
- */
- sdev->type = -1;
-
/*
* Assume that the device will have handshaking problems,
* and then fix this field later if it turns out it
--
2.29.2
next prev parent reply other threads:[~2021-02-22 13:28 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-22 13:23 [PATCHv7 00/31] scsi: enable reserved commands for LLDDs Hannes Reinecke
2021-02-22 13:23 ` [PATCH 01/31] block: add flag for internal commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 02/31] scsi: add scsi_{get,put}_internal_cmd() helper Hannes Reinecke
2021-02-24 12:12 ` John Garry
2021-02-22 13:23 ` [PATCH 03/31] fnic: use internal commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 04/31] fnic: use scsi_host_busy_iter() to traverse commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 05/31] fnic: check for started requests in fnic_wq_copy_cleanup_handler() Hannes Reinecke
2021-02-22 13:23 ` Hannes Reinecke [this message]
2021-02-22 13:23 ` [PATCH 07/31] scsi: Use dummy inquiry data for the host device Hannes Reinecke
2021-02-22 13:23 ` [PATCH 08/31] scsi: revamp host device handling Hannes Reinecke
2021-02-24 13:12 ` John Garry
2021-02-24 14:24 ` Hannes Reinecke
2021-02-24 14:31 ` John Garry
2021-02-24 14:35 ` Hannes Reinecke
2021-02-22 13:23 ` [PATCH 09/31] snic: use reserved commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 10/31] snic: use tagset iter for traversing commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 11/31] snic: check for started requests in snic_hba_reset_cmpl_handler() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 12/31] scsi: implement reserved command handling Hannes Reinecke
2021-02-22 13:23 ` [PATCH 13/31] hpsa: move hpsa_hba_inquiry after scsi_add_host() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 14/31] hpsa: use reserved commands Hannes Reinecke
2021-03-11 22:03 ` michael.christie
2021-05-03 9:36 ` Hannes Reinecke
2021-02-22 13:23 ` [PATCH 15/31] hpsa: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 16/31] hpsa: drop refcount field from CommandList Hannes Reinecke
2021-02-22 13:23 ` [PATCH 17/31] aacraid: move scsi_add_host() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 18/31] aacraid: store target id in host_scribble Hannes Reinecke
2021-02-22 13:23 ` [PATCH 19/31] aacraid: use scsi_get_internal_cmd() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 20/31] aacraid: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
2021-02-22 13:23 ` [PATCH 21/31] mv_sas: kill mvsas_debug_issue_ssp_tmf() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 22/31] pm8001: kill pm8001_issue_ssp_tmf() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 23/31] pm8001: kill 'dev' argument from pm8001_exec_internal_task_abort() Hannes Reinecke
2021-02-22 13:23 ` [PATCH 24/31] pm8001: use libsas-provided domain devices for SATA Hannes Reinecke
2021-02-22 13:23 ` [PATCH 25/31] libsas: add SCSI target pointer to struct domain_device Hannes Reinecke
2021-02-22 13:24 ` [PATCH 26/31] scsi: libsas,hisi_sas,mvsas,pm8001: Allocate Scsi_cmd for slow task Hannes Reinecke
2021-03-09 11:22 ` luojiaxing
2021-03-09 14:05 ` John Garry
2021-03-11 8:51 ` luojiaxing
2021-02-22 13:24 ` [PATCH 27/31] libsas: add tag to struct sas_task Hannes Reinecke
2021-02-22 13:24 ` [PATCH 28/31] scsi: hisi_sas: Use libsas slow task SCSI command Hannes Reinecke
2021-02-22 13:24 ` [PATCH 29/31] hisi_sas: use task tag to reference the slot Hannes Reinecke
2021-03-10 1:54 ` luojiaxing
2021-02-22 13:24 ` [PATCH 30/31] mv_sas: use reserved tags and drop private tag allocation Hannes Reinecke
2021-02-22 13:24 ` [PATCH 31/31] pm8001: use block-layer tags for ccb allocation Hannes Reinecke
2021-02-23 12:31 ` John Garry
2021-02-23 10:16 ` [PATCHv7 00/31] scsi: enable reserved commands for LLDDs John Garry
2021-02-23 17:50 ` John Garry
2021-02-24 6:54 ` Hannes Reinecke
2021-02-24 8:55 ` John Garry
2021-03-06 15:11 ` Don.Brace
2021-03-16 17:57 ` Don.Brace
2021-03-29 21:47 ` Don.Brace
2021-03-11 23:53 ` michael.christie
2021-03-12 16:08 ` Hannes Reinecke
2021-03-17 17:09 ` John Garry
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