[PATCH v2 0/3] hw/nvme: namespace parameter for EUI-64

[PATCH v2 0/3] hw/nvme: namespace parameter for EUI-64

[Heinrich Schuchardt]

The EUI-64 field is the only identifier for NVMe namespaces in UEFI device
paths. Add a new namespace property "eui64", that provides the user the
option to specify the EUI-64.

v2:
	include patch for hw_compat_6_0
	add a patch to implement default values for the EUI-64

Heinrich Schuchardt (3):
  hw: virt: consider hw_compat_6_0
  hw/nvme: namespace parameter for EUI-64
  hw/nvme: default for namespace EUI-64

 docs/system/nvme.rst |  6 +++++
 hw/arm/virt.c        |  2 ++
 hw/core/machine.c    |  1 +
 hw/nvme/ctrl.c       | 58 ++++++++++++++++++++++++++------------------
 hw/nvme/ns.c         | 11 +++++++++
 hw/nvme/nvme.h       |  3 +++
 6 files changed, 58 insertions(+), 23 deletions(-)

--
2.30.2

[PATCH v2 1/3] hw: virt: consider hw_compat_6_0

[Heinrich Schuchardt]

virt-6.0 must consider hw_compat_6_0.

Fixes: da7e13c00b59 ("hw: add compat machines for 6.1")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
---
v2:
	add missing Fixes: tag
---
 hw/arm/virt.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 840758666d..8bc3b408fe 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -2764,6 +2764,8 @@ DEFINE_VIRT_MACHINE_AS_LATEST(6, 1)

 static void virt_machine_6_0_options(MachineClass *mc)
 {
+    virt_machine_6_1_options(mc);
+    compat_props_add(mc->compat_props, hw_compat_6_0, hw_compat_6_0_len);
 }
 DEFINE_VIRT_MACHINE(6, 0)

--
2.30.2

Re: [PATCH v2 1/3] hw: virt: consider hw_compat_6_0

[Heinrich Schuchardt]

On 6/12/21 1:46 AM, Heinrich Schuchardt wrote:
> virt-6.0 must consider hw_compat_6_0.
>
> Fixes: da7e13c00b59 ("hw: add compat machines for 6.1")
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> Reviewed-by: Cornelia Huck <cohuck@redhat.com>

This patch was applied to target-arm.next by Peter.

> ---
> v2:
> 	add missing Fixes: tag
> ---
>   hw/arm/virt.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 840758666d..8bc3b408fe 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -2764,6 +2764,8 @@ DEFINE_VIRT_MACHINE_AS_LATEST(6, 1)
>
>   static void virt_machine_6_0_options(MachineClass *mc)
>   {
> +    virt_machine_6_1_options(mc);
> +    compat_props_add(mc->compat_props, hw_compat_6_0, hw_compat_6_0_len);
>   }
>   DEFINE_VIRT_MACHINE(6, 0)
>
> --
> 2.30.2
>

[PATCH v2 2/3] hw/nvme: namespace parameter for EUI-64

[Heinrich Schuchardt]

The EUI-64 field is the only identifier for NVMe namespaces in UEFI device
paths. Add a new namespace property "eui64", that provides the user the
option to specify the EUI-64.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Klaus Jensen <k.jensen@samsung.com>
---
v2:
	fix typo %s/EUI64/EUI-64/
---
 docs/system/nvme.rst |  4 +++
 hw/nvme/ctrl.c       | 58 ++++++++++++++++++++++++++------------------
 hw/nvme/ns.c         |  2 ++
 hw/nvme/nvme.h       |  1 +
 4 files changed, 42 insertions(+), 23 deletions(-)

diff --git a/docs/system/nvme.rst b/docs/system/nvme.rst
index f7f63d6bf6..b5f8288d7c 100644
--- a/docs/system/nvme.rst
+++ b/docs/system/nvme.rst
@@ -81,6 +81,10 @@ There are a number of parameters available:
   Set the UUID of the namespace. This will be reported as a "Namespace UUID"
   descriptor in the Namespace Identification Descriptor List.

+``eui64``
+  Set the EUI-64 of the namespace. This will be reported as a "IEEE Extended
+  Unique Identifier" descriptor in the Namespace Identification Descriptor List.
+
 ``bus``
   If there are more ``nvme`` devices defined, this parameter may be used to
   attach the namespace to a specific ``nvme`` device (identified by an ``id``
diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index 8dd9cb2ccb..f37c4fd635 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -4436,19 +4436,19 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n, NvmeRequest *req)
     NvmeIdentify *c = (NvmeIdentify *)&req->cmd;
     uint32_t nsid = le32_to_cpu(c->nsid);
     uint8_t list[NVME_IDENTIFY_DATA_SIZE] = {};
-
-    struct data {
-        struct {
-            NvmeIdNsDescr hdr;
-            uint8_t v[NVME_NIDL_UUID];
-        } uuid;
-        struct {
-            NvmeIdNsDescr hdr;
-            uint8_t v;
-        } csi;
-    };
-
-    struct data *ns_descrs = (struct data *)list;
+    uint8_t *pos = list;
+    struct {
+        NvmeIdNsDescr hdr;
+        uint8_t v[NVME_NIDL_UUID];
+    } QEMU_PACKED uuid;
+    struct {
+        NvmeIdNsDescr hdr;
+        uint64_t v;
+    } QEMU_PACKED eui64;
+    struct {
+        NvmeIdNsDescr hdr;
+        uint8_t v;
+    } QEMU_PACKED csi;

     trace_pci_nvme_identify_ns_descr_list(nsid);

@@ -4462,17 +4462,29 @@ static uint16_t nvme_identify_ns_descr_list(NvmeCtrl *n, NvmeRequest *req)
     }

     /*
-     * Because the NGUID and EUI64 fields are 0 in the Identify Namespace data
-     * structure, a Namespace UUID (nidt = 3h) must be reported in the
-     * Namespace Identification Descriptor. Add the namespace UUID here.
+     * If the EUI-64 field is 0 and the NGUID field is 0, the namespace must
+     * provide a valid Namespace UUID in the Namespace Identification Descriptor
+     * data structure. QEMU does not yet support setting NGUID.
      */
-    ns_descrs->uuid.hdr.nidt = NVME_NIDT_UUID;
-    ns_descrs->uuid.hdr.nidl = NVME_NIDL_UUID;
-    memcpy(&ns_descrs->uuid.v, ns->params.uuid.data, NVME_NIDL_UUID);
-
-    ns_descrs->csi.hdr.nidt = NVME_NIDT_CSI;
-    ns_descrs->csi.hdr.nidl = NVME_NIDL_CSI;
-    ns_descrs->csi.v = ns->csi;
+    uuid.hdr.nidt = NVME_NIDT_UUID;
+    uuid.hdr.nidl = NVME_NIDL_UUID;
+    memcpy(uuid.v, ns->params.uuid.data, NVME_NIDL_UUID);
+    memcpy(pos, &uuid, sizeof(uuid));
+    pos += sizeof(uuid);
+
+    if (ns->params.eui64) {
+        eui64.hdr.nidt = NVME_NIDT_EUI64;
+        eui64.hdr.nidl = NVME_NIDL_EUI64;
+        eui64.v = cpu_to_be64(ns->params.eui64);
+        memcpy(pos, &eui64, sizeof(eui64));
+        pos += sizeof(eui64);
+    }
+
+    csi.hdr.nidt = NVME_NIDT_CSI;
+    csi.hdr.nidl = NVME_NIDL_CSI;
+    csi.v = ns->csi;
+    memcpy(pos, &csi, sizeof(csi));
+    pos += sizeof(csi);

     return nvme_c2h(n, list, sizeof(list), req);
 }
diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
index 3fec9c6273..45e457de6a 100644
--- a/hw/nvme/ns.c
+++ b/hw/nvme/ns.c
@@ -77,6 +77,7 @@ static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
     id_ns->mssrl = cpu_to_le16(ns->params.mssrl);
     id_ns->mcl = cpu_to_le32(ns->params.mcl);
     id_ns->msrc = ns->params.msrc;
+    id_ns->eui64 = cpu_to_be64(ns->params.eui64);

     ds = 31 - clz32(ns->blkconf.logical_block_size);
     ms = ns->params.ms;
@@ -511,6 +512,7 @@ static Property nvme_ns_props[] = {
     DEFINE_PROP_BOOL("shared", NvmeNamespace, params.shared, false),
     DEFINE_PROP_UINT32("nsid", NvmeNamespace, params.nsid, 0),
     DEFINE_PROP_UUID("uuid", NvmeNamespace, params.uuid),
+    DEFINE_PROP_UINT64("eui64", NvmeNamespace, params.eui64, 0),
     DEFINE_PROP_UINT16("ms", NvmeNamespace, params.ms, 0),
     DEFINE_PROP_UINT8("mset", NvmeNamespace, params.mset, 0),
     DEFINE_PROP_UINT8("pi", NvmeNamespace, params.pi, 0),
diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
index 93a7e0e538..ac90e13d7b 100644
--- a/hw/nvme/nvme.h
+++ b/hw/nvme/nvme.h
@@ -83,6 +83,7 @@ typedef struct NvmeNamespaceParams {
     bool     shared;
     uint32_t nsid;
     QemuUUID uuid;
+    uint64_t eui64;

     uint16_t ms;
     uint8_t  mset;
--
2.30.2

Re: [PATCH v2 2/3] hw/nvme: namespace parameter for EUI-64

[Keith Busch]

On Sat, Jun 12, 2021 at 01:46:30AM +0200, Heinrich Schuchardt wrote:
> +``eui64``
> +  Set the EUI-64 of the namespace. This will be reported as a "IEEE Extended
> +  Unique Identifier" descriptor in the Namespace Identification Descriptor List.

This needs to match Identify Namespace's EUI64 field, too. The
Descriptor List is really just a copy of what is reported in that
structure.

Re: [PATCH v2 2/3] hw/nvme: namespace parameter for EUI-64

[Klaus Jensen]

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On Jun 14 11:48, Keith Busch wrote:
>On Sat, Jun 12, 2021 at 01:46:30AM +0200, Heinrich Schuchardt wrote:
>> +``eui64``
>> +  Set the EUI-64 of the namespace. This will be reported as a "IEEE Extended
>> +  Unique Identifier" descriptor in the Namespace Identification Descriptor List.
>
>This needs to match Identify Namespace's EUI64 field, too. The
>Descriptor List is really just a copy of what is reported in that
>structure.

It's missing in the documentation here, but the patch does include a 
hunk that sets id_ns->eui64.

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[PATCH v2 3/3] hw/nvme: default for namespace EUI-64

[Heinrich Schuchardt]

On machines with version > 6.0 replace a missing EUI-64 by a generated
value.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
v2:
	new patch
---
 docs/system/nvme.rst | 2 ++
 hw/core/machine.c    | 1 +
 hw/nvme/ns.c         | 9 +++++++++
 hw/nvme/nvme.h       | 2 ++
 4 files changed, 14 insertions(+)

diff --git a/docs/system/nvme.rst b/docs/system/nvme.rst
index b5f8288d7c..33a15c7dbc 100644
--- a/docs/system/nvme.rst
+++ b/docs/system/nvme.rst
@@ -84,6 +84,8 @@ There are a number of parameters available:
 ``eui64``
   Set the EUI-64 of the namespace. This will be reported as a "IEEE Extended
   Unique Identifier" descriptor in the Namespace Identification Descriptor List.
+  Since machine type 6.1 a non-zero default value is used if the parameter
+  is not provided. For earlier machine types the field defaults to 0.

 ``bus``
   If there are more ``nvme`` devices defined, this parameter may be used to
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 55b9bc7817..d0e9348888 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -39,6 +39,7 @@
 GlobalProperty hw_compat_6_0[] = {
     { "gpex-pcihost", "allow-unmapped-accesses", "false" },
     { "i8042", "extended-state", "false"},
+    { "nvme-ns", "eui64-default", "off"},
 };
 const size_t hw_compat_6_0_len = G_N_ELEMENTS(hw_compat_6_0);

diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
index 45e457de6a..4275c3db63 100644
--- a/hw/nvme/ns.c
+++ b/hw/nvme/ns.c
@@ -56,6 +56,7 @@ void nvme_ns_init_format(NvmeNamespace *ns)

 static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
 {
+    static uint64_t ns_count;
     NvmeIdNs *id_ns = &ns->id_ns;
     uint8_t ds;
     uint16_t ms;
@@ -73,6 +74,12 @@ static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
         id_ns->nmic |= NVME_NMIC_NS_SHARED;
     }

+    /* Substitute a missing EUI-64 by an autogenerated one */
+    ++ns_count;
+    if (!ns->params.eui64 && ns->params.eui64_default) {
+        ns->params.eui64 = ns_count + NVME_EUI64_DEFAULT;
+    }
+
     /* simple copy */
     id_ns->mssrl = cpu_to_le16(ns->params.mssrl);
     id_ns->mcl = cpu_to_le32(ns->params.mcl);
@@ -533,6 +540,8 @@ static Property nvme_ns_props[] = {
                        params.max_open_zones, 0),
     DEFINE_PROP_UINT32("zoned.descr_ext_size", NvmeNamespace,
                        params.zd_extension_size, 0),
+    DEFINE_PROP_BOOL("eui64-default", NvmeNamespace, params.eui64_default,
+                     true),
     DEFINE_PROP_END_OF_LIST(),
 };

diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
index ac90e13d7b..3fb869731d 100644
--- a/hw/nvme/nvme.h
+++ b/hw/nvme/nvme.h
@@ -26,6 +26,7 @@

 #define NVME_MAX_CONTROLLERS 32
 #define NVME_MAX_NAMESPACES  256
+#define NVME_EUI64_DEFAULT 0x27fed9272381cbd0UL

 typedef struct NvmeCtrl NvmeCtrl;
 typedef struct NvmeNamespace NvmeNamespace;
@@ -84,6 +85,7 @@ typedef struct NvmeNamespaceParams {
     uint32_t nsid;
     QemuUUID uuid;
     uint64_t eui64;
+    bool     eui64_default;

     uint16_t ms;
     uint8_t  mset;
--
2.30.2

Re: [PATCH v2 3/3] hw/nvme: default for namespace EUI-64

[Klaus Jensen]

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On Jun 12 01:46, Heinrich Schuchardt wrote:
>On machines with version > 6.0 replace a missing EUI-64 by a generated
>value.
>
>Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>---
>v2:
>	new patch
>---
> docs/system/nvme.rst | 2 ++
> hw/core/machine.c    | 1 +
> hw/nvme/ns.c         | 9 +++++++++
> hw/nvme/nvme.h       | 2 ++
> 4 files changed, 14 insertions(+)
>
>diff --git a/docs/system/nvme.rst b/docs/system/nvme.rst
>index b5f8288d7c..33a15c7dbc 100644
>--- a/docs/system/nvme.rst
>+++ b/docs/system/nvme.rst
>@@ -84,6 +84,8 @@ There are a number of parameters available:
> ``eui64``
>   Set the EUI-64 of the namespace. This will be reported as a "IEEE Extended
>   Unique Identifier" descriptor in the Namespace Identification Descriptor List.
>+  Since machine type 6.1 a non-zero default value is used if the parameter
>+  is not provided. For earlier machine types the field defaults to 0.
>
> ``bus``
>   If there are more ``nvme`` devices defined, this parameter may be used to
>diff --git a/hw/core/machine.c b/hw/core/machine.c
>index 55b9bc7817..d0e9348888 100644
>--- a/hw/core/machine.c
>+++ b/hw/core/machine.c
>@@ -39,6 +39,7 @@
> GlobalProperty hw_compat_6_0[] = {
>     { "gpex-pcihost", "allow-unmapped-accesses", "false" },
>     { "i8042", "extended-state", "false"},
>+    { "nvme-ns", "eui64-default", "off"},
> };
> const size_t hw_compat_6_0_len = G_N_ELEMENTS(hw_compat_6_0);
>
>diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
>index 45e457de6a..4275c3db63 100644
>--- a/hw/nvme/ns.c
>+++ b/hw/nvme/ns.c
>@@ -56,6 +56,7 @@ void nvme_ns_init_format(NvmeNamespace *ns)
>
> static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
> {
>+    static uint64_t ns_count;
>     NvmeIdNs *id_ns = &ns->id_ns;
>     uint8_t ds;
>     uint16_t ms;
>@@ -73,6 +74,12 @@ static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
>         id_ns->nmic |= NVME_NMIC_NS_SHARED;
>     }
>
>+    /* Substitute a missing EUI-64 by an autogenerated one */
>+    ++ns_count;
>+    if (!ns->params.eui64 && ns->params.eui64_default) {
>+        ns->params.eui64 = ns_count + NVME_EUI64_DEFAULT;
>+    }
>+
>     /* simple copy */
>     id_ns->mssrl = cpu_to_le16(ns->params.mssrl);
>     id_ns->mcl = cpu_to_le32(ns->params.mcl);
>@@ -533,6 +540,8 @@ static Property nvme_ns_props[] = {
>                        params.max_open_zones, 0),
>     DEFINE_PROP_UINT32("zoned.descr_ext_size", NvmeNamespace,
>                        params.zd_extension_size, 0),
>+    DEFINE_PROP_BOOL("eui64-default", NvmeNamespace, params.eui64_default,
>+                     true),
>     DEFINE_PROP_END_OF_LIST(),
> };
>
>diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
>index ac90e13d7b..3fb869731d 100644
>--- a/hw/nvme/nvme.h
>+++ b/hw/nvme/nvme.h
>@@ -26,6 +26,7 @@
>
> #define NVME_MAX_CONTROLLERS 32
> #define NVME_MAX_NAMESPACES  256
>+#define NVME_EUI64_DEFAULT 0x27fed9272381cbd0UL

Is there any significance to this value? Any particular reason it is not 
using the QEMU OUI (52:54:00)?

>
> typedef struct NvmeCtrl NvmeCtrl;
> typedef struct NvmeNamespace NvmeNamespace;
>@@ -84,6 +85,7 @@ typedef struct NvmeNamespaceParams {
>     uint32_t nsid;
>     QemuUUID uuid;
>     uint64_t eui64;
>+    bool     eui64_default;
>
>     uint16_t ms;
>     uint8_t  mset;
>--
>2.30.2
>
>

-- 
One of us - No more doubt, silence or taboo about mental illness.

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Re: [PATCH v2 3/3] hw/nvme: default for namespace EUI-64

[Heinrich Schuchardt]

On 6/14/21 8:31 PM, Klaus Jensen wrote:
> On Jun 12 01:46, Heinrich Schuchardt wrote:
>> On machines with version > 6.0 replace a missing EUI-64 by a generated
>> value.
>>
>> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>> ---
>> v2:
>>     new patch
>> ---
>> docs/system/nvme.rst | 2 ++
>> hw/core/machine.c    | 1 +
>> hw/nvme/ns.c         | 9 +++++++++
>> hw/nvme/nvme.h       | 2 ++
>> 4 files changed, 14 insertions(+)
>>
>> diff --git a/docs/system/nvme.rst b/docs/system/nvme.rst
>> index b5f8288d7c..33a15c7dbc 100644
>> --- a/docs/system/nvme.rst
>> +++ b/docs/system/nvme.rst
>> @@ -84,6 +84,8 @@ There are a number of parameters available:
>> ``eui64``
>>   Set the EUI-64 of the namespace. This will be reported as a "IEEE
>> Extended
>>   Unique Identifier" descriptor in the Namespace Identification
>> Descriptor List.
>> +  Since machine type 6.1 a non-zero default value is used if the
>> parameter
>> +  is not provided. For earlier machine types the field defaults to 0.
>>
>> ``bus``
>>   If there are more ``nvme`` devices defined, this parameter may be
>> used to
>> diff --git a/hw/core/machine.c b/hw/core/machine.c
>> index 55b9bc7817..d0e9348888 100644
>> --- a/hw/core/machine.c
>> +++ b/hw/core/machine.c
>> @@ -39,6 +39,7 @@
>> GlobalProperty hw_compat_6_0[] = {
>>     { "gpex-pcihost", "allow-unmapped-accesses", "false" },
>>     { "i8042", "extended-state", "false"},
>> +    { "nvme-ns", "eui64-default", "off"},
>> };
>> const size_t hw_compat_6_0_len = G_N_ELEMENTS(hw_compat_6_0);
>>
>> diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
>> index 45e457de6a..4275c3db63 100644
>> --- a/hw/nvme/ns.c
>> +++ b/hw/nvme/ns.c
>> @@ -56,6 +56,7 @@ void nvme_ns_init_format(NvmeNamespace *ns)
>>
>> static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
>> {
>> +    static uint64_t ns_count;
>>     NvmeIdNs *id_ns = &ns->id_ns;
>>     uint8_t ds;
>>     uint16_t ms;
>> @@ -73,6 +74,12 @@ static int nvme_ns_init(NvmeNamespace *ns, Error
>> **errp)
>>         id_ns->nmic |= NVME_NMIC_NS_SHARED;
>>     }
>>
>> +    /* Substitute a missing EUI-64 by an autogenerated one */
>> +    ++ns_count;
>> +    if (!ns->params.eui64 && ns->params.eui64_default) {
>> +        ns->params.eui64 = ns_count + NVME_EUI64_DEFAULT;
>> +    }
>> +
>>     /* simple copy */
>>     id_ns->mssrl = cpu_to_le16(ns->params.mssrl);
>>     id_ns->mcl = cpu_to_le32(ns->params.mcl);
>> @@ -533,6 +540,8 @@ static Property nvme_ns_props[] = {
>>                        params.max_open_zones, 0),
>>     DEFINE_PROP_UINT32("zoned.descr_ext_size", NvmeNamespace,
>>                        params.zd_extension_size, 0),
>> +    DEFINE_PROP_BOOL("eui64-default", NvmeNamespace,
>> params.eui64_default,
>> +                     true),
>>     DEFINE_PROP_END_OF_LIST(),
>> };
>>
>> diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
>> index ac90e13d7b..3fb869731d 100644
>> --- a/hw/nvme/nvme.h
>> +++ b/hw/nvme/nvme.h
>> @@ -26,6 +26,7 @@
>>
>> #define NVME_MAX_CONTROLLERS 32
>> #define NVME_MAX_NAMESPACES  256
>> +#define NVME_EUI64_DEFAULT 0x27fed9272381cbd0UL
>
> Is there any significance to this value? Any particular reason it is not
> using the QEMU OUI (52:54:00)?

52:54:00 does not exist in http://standards-oui.ieee.org/oui/oui.txt
So this seems not to be an OUI. We should not use a number that IEEE may
sell to some other entity.

Until somebody buys a 36bit OUI in the name of QEMU for 780 USD we have
to use a locally assigned number.

Best regards

Heinrich

>
>>
>> typedef struct NvmeCtrl NvmeCtrl;
>> typedef struct NvmeNamespace NvmeNamespace;
>> @@ -84,6 +85,7 @@ typedef struct NvmeNamespaceParams {
>>     uint32_t nsid;
>>     QemuUUID uuid;
>>     uint64_t eui64;
>> +    bool     eui64_default;
>>
>>     uint16_t ms;
>>     uint8_t  mset;
>> --
>> 2.30.2
>>
>>
>

Re: [PATCH v2 3/3] hw/nvme: default for namespace EUI-64

[Heinrich Schuchardt]

On 6/14/21 9:23 PM, Heinrich Schuchardt wrote:
> On 6/14/21 8:31 PM, Klaus Jensen wrote:
>> On Jun 12 01:46, Heinrich Schuchardt wrote:
>>> On machines with version > 6.0 replace a missing EUI-64 by a generated
>>> value.
>>>
>>> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>>> ---
>>> v2:
>>>     new patch
>>> ---
>>> docs/system/nvme.rst | 2 ++
>>> hw/core/machine.c    | 1 +
>>> hw/nvme/ns.c         | 9 +++++++++
>>> hw/nvme/nvme.h       | 2 ++
>>> 4 files changed, 14 insertions(+)
>>>
>>> diff --git a/docs/system/nvme.rst b/docs/system/nvme.rst
>>> index b5f8288d7c..33a15c7dbc 100644
>>> --- a/docs/system/nvme.rst
>>> +++ b/docs/system/nvme.rst
>>> @@ -84,6 +84,8 @@ There are a number of parameters available:
>>> ``eui64``
>>>   Set the EUI-64 of the namespace. This will be reported as a "IEEE
>>> Extended
>>>   Unique Identifier" descriptor in the Namespace Identification
>>> Descriptor List.
>>> +  Since machine type 6.1 a non-zero default value is used if the
>>> parameter
>>> +  is not provided. For earlier machine types the field defaults to 0.
>>>
>>> ``bus``
>>>   If there are more ``nvme`` devices defined, this parameter may be
>>> used to
>>> diff --git a/hw/core/machine.c b/hw/core/machine.c
>>> index 55b9bc7817..d0e9348888 100644
>>> --- a/hw/core/machine.c
>>> +++ b/hw/core/machine.c
>>> @@ -39,6 +39,7 @@
>>> GlobalProperty hw_compat_6_0[] = {
>>>     { "gpex-pcihost", "allow-unmapped-accesses", "false" },
>>>     { "i8042", "extended-state", "false"},
>>> +    { "nvme-ns", "eui64-default", "off"},
>>> };
>>> const size_t hw_compat_6_0_len = G_N_ELEMENTS(hw_compat_6_0);
>>>
>>> diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
>>> index 45e457de6a..4275c3db63 100644
>>> --- a/hw/nvme/ns.c
>>> +++ b/hw/nvme/ns.c
>>> @@ -56,6 +56,7 @@ void nvme_ns_init_format(NvmeNamespace *ns)
>>>
>>> static int nvme_ns_init(NvmeNamespace *ns, Error **errp)
>>> {
>>> +    static uint64_t ns_count;
>>>     NvmeIdNs *id_ns = &ns->id_ns;
>>>     uint8_t ds;
>>>     uint16_t ms;
>>> @@ -73,6 +74,12 @@ static int nvme_ns_init(NvmeNamespace *ns, Error
>>> **errp)
>>>         id_ns->nmic |= NVME_NMIC_NS_SHARED;
>>>     }
>>>
>>> +    /* Substitute a missing EUI-64 by an autogenerated one */
>>> +    ++ns_count;
>>> +    if (!ns->params.eui64 && ns->params.eui64_default) {
>>> +        ns->params.eui64 = ns_count + NVME_EUI64_DEFAULT;
>>> +    }
>>> +
>>>     /* simple copy */
>>>     id_ns->mssrl = cpu_to_le16(ns->params.mssrl);
>>>     id_ns->mcl = cpu_to_le32(ns->params.mcl);
>>> @@ -533,6 +540,8 @@ static Property nvme_ns_props[] = {
>>>                        params.max_open_zones, 0),
>>>     DEFINE_PROP_UINT32("zoned.descr_ext_size", NvmeNamespace,
>>>                        params.zd_extension_size, 0),
>>> +    DEFINE_PROP_BOOL("eui64-default", NvmeNamespace,
>>> params.eui64_default,
>>> +                     true),
>>>     DEFINE_PROP_END_OF_LIST(),
>>> };
>>>
>>> diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
>>> index ac90e13d7b..3fb869731d 100644
>>> --- a/hw/nvme/nvme.h
>>> +++ b/hw/nvme/nvme.h
>>> @@ -26,6 +26,7 @@
>>>
>>> #define NVME_MAX_CONTROLLERS 32
>>> #define NVME_MAX_NAMESPACES  256
>>> +#define NVME_EUI64_DEFAULT 0x27fed9272381cbd0UL
>>
>> Is there any significance to this value? Any particular reason it is not
>> using the QEMU OUI (52:54:00)?
>
> 52:54:00 does not exist in http://standards-oui.ieee.org/oui/oui.txt
> So this seems not to be an OUI. We should not use a number that IEEE may
> sell to some other entity.
>
> Until somebody buys a 36bit OUI in the name of QEMU for 780 USD we have
> to use a locally assigned number.

I got that wrong IEEE_COMPANY_LOCALLY_ASSIGNED 0x525400 is locally
assigned and therefore not in the OUI list.

I will resubmit the patch.

Best regards

Heinrich

>
> Best regards
>
> Heinrich
>
>>
>>>
>>> typedef struct NvmeCtrl NvmeCtrl;
>>> typedef struct NvmeNamespace NvmeNamespace;
>>> @@ -84,6 +85,7 @@ typedef struct NvmeNamespaceParams {
>>>     uint32_t nsid;
>>>     QemuUUID uuid;
>>>     uint64_t eui64;
>>> +    bool     eui64_default;
>>>
>>>     uint16_t ms;
>>>     uint8_t  mset;
>>> --
>>> 2.30.2
>>>
>>>
>>
>