1. Patchew
  2. QEMU
  3. [PATCH v3 0/4] virtio_net: Add the check for vdpa's mac address
  4. View patch

[PATCH v3 1/4] vhost_vdpa : Add a new parameter to enable check mac address

Cindy Lu posted 4 patches 1 year, 3 months ago
Maintainers: "Michael S. Tsirkin" <mst@redhat.com>, Jason Wang <jasowang@redhat.com>, Eric Blake <eblake@redhat.com>, Markus Armbruster <armbru@redhat.com>
There is a newer version of this series
[PATCH v3 1/4] vhost_vdpa : Add a new parameter to enable check mac address
Posted by Cindy Lu 1 year, 3 months ago 
When using a VDPA device, it's important to ensure that the MAC
address is correctly set.
Add a new parameter in qemu cmdline to enable this check, default value
is false

The usage is:
....
-netdev type=vhost-vdpa,vhostdev=/dev/vhost-vdpa-0,id=vhost-vdpa0,macstrickcheck=true\
-device virtio-net-pci,netdev=vhost-vdpa0\
....

Signed-off-by: Cindy Lu <lulu@redhat.com>
---
 include/net/net.h | 1 +
 net/vhost-vdpa.c  | 4 ++++
 qapi/net.json     | 5 +++++
 3 files changed, 10 insertions(+)

diff --git a/include/net/net.h b/include/net/net.h
index c8f679761b..e00651a97b 100644
--- a/include/net/net.h
+++ b/include/net/net.h
@@ -112,6 +112,7 @@ struct NetClientState {
     bool is_netdev;
     bool do_not_pad; /* do not pad to the minimum ethernet frame length */
     bool is_datapath;
+    bool check_mac;
     QTAILQ_HEAD(, NetFilterState) filters;
 };
 
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 46b02c50be..071c3ff065 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -1860,6 +1860,8 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
                                      iova_range, features, shared, errp);
         if (!ncs[i])
             goto err;
+
+        ncs[i]->check_mac = opts->macstrickcheck;
     }
 
     if (has_cvq) {
@@ -1872,6 +1874,8 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
                                  errp);
         if (!nc)
             goto err;
+
+        nc->check_mac = opts->macstrickcheck;
     }
 
     return 0;
diff --git a/qapi/net.json b/qapi/net.json
index 87fc0d0b28..7d75119858 100644
--- a/qapi/net.json
+++ b/qapi/net.json
@@ -510,6 +510,10 @@
 # @queues: number of queues to be created for multiqueue vhost-vdpa
 #     (default: 1)
 #
+# @macstrickcheck: Enable the check for whether the device's MAC address
+#     and the MAC in QEMU command line are acceptable for booting.
+#     (default: false)
+#
 # @x-svq: Start device with (experimental) shadow virtqueue.  (Since
 #     7.1) (default: false)
 #
@@ -524,6 +528,7 @@
     '*vhostdev':     'str',
     '*vhostfd':      'str',
     '*queues':       'int',
+    '*macstrickcheck':    'bool',
     '*x-svq':        {'type': 'bool', 'features' : [ 'unstable'] } } }
 
 ##
-- 
2.45.0
Re: [PATCH v3 1/4] vhost_vdpa : Add a new parameter to enable check mac address
Posted by Michael S. Tsirkin 1 year, 3 months ago 
On Sat, Oct 26, 2024 at 03:59:59PM +0800, Cindy Lu wrote:
> When using a VDPA device, it's important to ensure that the MAC
> address is correctly set.
> Add a new parameter in qemu cmdline to enable this check, default value
> is false
> 
> The usage is:
> ....
> -netdev type=vhost-vdpa,vhostdev=/dev/vhost-vdpa-0,id=vhost-vdpa0,macstrickcheck=true\

typos in command line are not welcome.
you should also separate words e.g. by dashes.
Are there more options than strict?
Also if not strict, should we still warn?


> -device virtio-net-pci,netdev=vhost-vdpa0\
> ....
> 
> Signed-off-by: Cindy Lu <lulu@redhat.com>
> ---
>  include/net/net.h | 1 +
>  net/vhost-vdpa.c  | 4 ++++
>  qapi/net.json     | 5 +++++
>  3 files changed, 10 insertions(+)
> 
> diff --git a/include/net/net.h b/include/net/net.h
> index c8f679761b..e00651a97b 100644
> --- a/include/net/net.h
> +++ b/include/net/net.h
> @@ -112,6 +112,7 @@ struct NetClientState {
>      bool is_netdev;
>      bool do_not_pad; /* do not pad to the minimum ethernet frame length */
>      bool is_datapath;
> +    bool check_mac;
>      QTAILQ_HEAD(, NetFilterState) filters;
>  };
>  
> diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
> index 46b02c50be..071c3ff065 100644
> --- a/net/vhost-vdpa.c
> +++ b/net/vhost-vdpa.c
> @@ -1860,6 +1860,8 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
>                                       iova_range, features, shared, errp);
>          if (!ncs[i])
>              goto err;
> +
> +        ncs[i]->check_mac = opts->macstrickcheck;
>      }
>  
>      if (has_cvq) {
> @@ -1872,6 +1874,8 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
>                                   errp);
>          if (!nc)
>              goto err;
> +
> +        nc->check_mac = opts->macstrickcheck;
>      }
>  
>      return 0;
> diff --git a/qapi/net.json b/qapi/net.json
> index 87fc0d0b28..7d75119858 100644
> --- a/qapi/net.json
> +++ b/qapi/net.json
> @@ -510,6 +510,10 @@
>  # @queues: number of queues to be created for multiqueue vhost-vdpa
>  #     (default: 1)
>  #
> +# @macstrickcheck: Enable the check for whether the device's MAC address
> +#     and the MAC in QEMU command line are acceptable for booting.
> +#     (default: false)
> +#
>  # @x-svq: Start device with (experimental) shadow virtqueue.  (Since
>  #     7.1) (default: false)
>  #
> @@ -524,6 +528,7 @@
>      '*vhostdev':     'str',
>      '*vhostfd':      'str',
>      '*queues':       'int',
> +    '*macstrickcheck':    'bool',
>      '*x-svq':        {'type': 'bool', 'features' : [ 'unstable'] } } }
>  
>  ##
> -- 
> 2.45.0
Re: [PATCH v3 1/4] vhost_vdpa : Add a new parameter to enable check mac address
Posted by Cindy Lu 1 year, 3 months ago 
On Wed, Nov 6, 2024 at 5:25 PM Michael S. Tsirkin <mst@redhat.com> wrote:
>
> On Sat, Oct 26, 2024 at 03:59:59PM +0800, Cindy Lu wrote:
> > When using a VDPA device, it's important to ensure that the MAC
> > address is correctly set.
> > Add a new parameter in qemu cmdline to enable this check, default value
> > is false
> >
> > The usage is:
> > ....
> > -netdev type=vhost-vdpa,vhostdev=/dev/vhost-vdpa-0,id=vhost-vdpa0,macstrickcheck=true\
>
> typos in command line are not welcome.
> you should also separate words e.g. by dashes.
> Are there more options than strict?
> Also if not strict, should we still warn?
>
There is no other check for this, Thank you, Michael. I will change
this to a new name.
Thanks
Cindy
>
> > -device virtio-net-pci,netdev=vhost-vdpa0\
> > ....
> >
> > Signed-off-by: Cindy Lu <lulu@redhat.com>
> > ---
> >  include/net/net.h | 1 +
> >  net/vhost-vdpa.c  | 4 ++++
> >  qapi/net.json     | 5 +++++
> >  3 files changed, 10 insertions(+)
> >
> > diff --git a/include/net/net.h b/include/net/net.h
> > index c8f679761b..e00651a97b 100644
> > --- a/include/net/net.h
> > +++ b/include/net/net.h
> > @@ -112,6 +112,7 @@ struct NetClientState {
> >      bool is_netdev;
> >      bool do_not_pad; /* do not pad to the minimum ethernet frame length */
> >      bool is_datapath;
> > +    bool check_mac;
> >      QTAILQ_HEAD(, NetFilterState) filters;
> >  };
> >
> > diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
> > index 46b02c50be..071c3ff065 100644
> > --- a/net/vhost-vdpa.c
> > +++ b/net/vhost-vdpa.c
> > @@ -1860,6 +1860,8 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
> >                                       iova_range, features, shared, errp);
> >          if (!ncs[i])
> >              goto err;
> > +
> > +        ncs[i]->check_mac = opts->macstrickcheck;
> >      }
> >
> >      if (has_cvq) {
> > @@ -1872,6 +1874,8 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
> >                                   errp);
> >          if (!nc)
> >              goto err;
> > +
> > +        nc->check_mac = opts->macstrickcheck;
> >      }
> >
> >      return 0;
> > diff --git a/qapi/net.json b/qapi/net.json
> > index 87fc0d0b28..7d75119858 100644
> > --- a/qapi/net.json
> > +++ b/qapi/net.json
> > @@ -510,6 +510,10 @@
> >  # @queues: number of queues to be created for multiqueue vhost-vdpa
> >  #     (default: 1)
> >  #
> > +# @macstrickcheck: Enable the check for whether the device's MAC address
> > +#     and the MAC in QEMU command line are acceptable for booting.
> > +#     (default: false)
> > +#
> >  # @x-svq: Start device with (experimental) shadow virtqueue.  (Since
> >  #     7.1) (default: false)
> >  #
> > @@ -524,6 +528,7 @@
> >      '*vhostdev':     'str',
> >      '*vhostfd':      'str',
> >      '*queues':       'int',
> > +    '*macstrickcheck':    'bool',
> >      '*x-svq':        {'type': 'bool', 'features' : [ 'unstable'] } } }
> >
> >  ##
> > --
> > 2.45.0
>

Patchew 2.1-devel-b67e4c2

© 2016 - 2026 Red Hat, Inc.