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[Qemu-devel] [PATCHv2 2/4] scsi: use qemu_uuid to generate logical ident
From: |
Hannes Reinecke |
Subject: |
[Qemu-devel] [PATCHv2 2/4] scsi: use qemu_uuid to generate logical identifier for SES |
Date: |
Fri, 4 Aug 2017 10:36:33 +0200 |
The SES enclosure descriptor requires a logical identifier,
so generate one using the qemu_uuid and the Qumranet OUI.
Signed-off-by: Hannes Reinecke <address@hidden>
---
hw/scsi/scsi-bus.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
index c89e82d..8419c75 100644
--- a/hw/scsi/scsi-bus.c
+++ b/hw/scsi/scsi-bus.c
@@ -10,6 +10,7 @@
#include "trace.h"
#include "sysemu/dma.h"
#include "qemu/cutils.h"
+#include "qemu/crc32c.h"
static char *scsibus_get_dev_path(DeviceState *dev);
static char *scsibus_get_fw_dev_path(DeviceState *dev);
@@ -533,6 +534,22 @@ static bool
scsi_target_emulate_receive_diagnostic(SCSITargetReq *r)
enc_desc[0] = 0x09;
enc_desc[2] = 1;
enc_desc[3] = 0x24;
+ if (qemu_uuid_set) {
+ uint32_t crc;
+
+ /*
+ * Make this a NAA IEEE Registered identifier
+ * using Qumranet OUI (0x001A4A) and the
+ * crc32 from the system UUID.
+ */
+ enc_desc[4] = 0x50;
+ enc_desc[5] = 0x01;
+ enc_desc[6] = 0xa4;
+ enc_desc[7] = 0xa0;
+ crc = crc32c(0xffffffff, qemu_uuid.data, 16);
+ cpu_to_le32s(&crc);
+ memcpy(&enc_desc[8], &crc, 4);
+ }
memcpy(&enc_desc[12], "QEMU ", 8);
memcpy(&enc_desc[20], "QEMU TARGET ", 16);
pstrcpy((char *)&enc_desc[36], 4, qemu_hw_version());
--
1.8.5.6