[virtio-comment] [PATCH] reserve device ID for hwsim wireless simulation

[virtio-comment] [PATCH] reserve device ID for hwsim wireless simulation

[Johannes Berg]

From: Johannes Berg <johannes.berg@intel.com>

The Linux mac80211-hwsim module currently allows simulation of
multiple wireless radios on a shared medium, and has an existing
API for this to work through a userspace implementation of the
medium simulation (e.g. implemented by wmediumd).

In order to simplify working with virtual machines and to enable
(time-compressed) simulation use cases, allocate a virtio device
ID to allow carrying this protocol over virtio in addition to
the current netlink sockets.

Since device ID 28 was previously requested, use 29.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
There's an existing allocation of ID 10 for "mac80211 wlan" that
has - to my knowledge as the maintainer of mac80211 - never been
used anywhere, and I'm not familiar with the allocation for it.

It seems pretty safe to use that number here, if that's better?
---
 content.tex | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/content.tex b/content.tex
index 06bb4ca43d67..1703e97e0a81 100644
--- a/content.tex
+++ b/content.tex
@@ -2795,6 +2795,8 @@ \chapter{Device Types}\label{sec:Device Types}
 \hline
 27         &   PMEM device \\
 \hline
+29         &   mac80211 hwsim wireless simulation device \\
+\hline
 \end{tabular}
 
 Some of the devices above are unspecified by this document,
-- 
2.20.1


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Re: [virtio-comment] [PATCH] reserve device ID for hwsim wireless simulation

[Johannes Berg]

Hi,

> The Linux mac80211-hwsim module currently allows simulation of
> multiple wireless radios on a shared medium, and has an existing
> API for this to work through a userspace implementation of the
> medium simulation (e.g. implemented by wmediumd).
> 
> In order to simplify working with virtual machines and to enable
> (time-compressed) simulation use cases, allocate a virtio device
> ID to allow carrying this protocol over virtio in addition to
> the current netlink sockets.
> 
> Since device ID 28 was previously requested, use 29.

I evidently forgot to request a TC vote on this before, hereby doing
that.

Fixes: https://github.com/oasis-tcs/virtio-spec/issues/68

Thanks,
johannes


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Re: [virtio-comment] [PATCH] reserve device ID for hwsim wireless simulation

[Keiichi Watanabe]

Hi,

On Tue, Jan 7, 2020 at 9:40 PM Johannes Berg <johannes@sipsolutions.net> wrote:
>
> Hi,
>
> > The Linux mac80211-hwsim module currently allows simulation of
> > multiple wireless radios on a shared medium, and has an existing
> > API for this to work through a userspace implementation of the
> > medium simulation (e.g. implemented by wmediumd).
> >
> > In order to simplify working with virtual machines and to enable
> > (time-compressed) simulation use cases, allocate a virtio device
> > ID to allow carrying this protocol over virtio in addition to
> > the current netlink sockets.
> >
> > Since device ID 28 was previously requested, use 29.
>
> I evidently forgot to request a TC vote on this before, hereby doing
> that.
>
> Fixes: https://github.com/oasis-tcs/virtio-spec/issues/68

Is a TC vote for this issue in progress? I cannot find this issue in this list:
https://www.oasis-open.org/committees/ballots.php?wg_abbrev=virtio

I'm waiting for this issue resolved to request device ID 30 for video
devices in https://github.com/oasis-tcs/virtio-spec/issues/67

Best regards,
Keiichi

>
> Thanks,
> johannes
>
>
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Re: [virtio-comment] [PATCH] reserve device ID for hwsim wireless simulation

[Johannes Berg]

Hi,

> > I evidently forgot to request a TC vote on this before, hereby doing
> > that.
> > 
> > Fixes: https://github.com/oasis-tcs/virtio-spec/issues/68
> 
> Is a TC vote for this issue in progress? I cannot find this issue in this list:
> https://www.oasis-open.org/committees/ballots.php?wg_abbrev=virtio

I have no idea what's going on, who's shepherding the process, who to
ping, or anything like that, sorry.

Right now I was biding my time and ignoring the issue for now, but it'll
come up again soon since I do want to upstream the code for this that we
already have ...

So if anyone else has any thoughts, I'd greatly appreciate it.

> I'm waiting for this issue resolved to request device ID 30 for video
> devices in https://github.com/oasis-tcs/virtio-spec/issues/67

I guess you don't really need to have this resolved to request a vote on
the video device ID?

johannes


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Re: [virtio-comment] [PATCH] reserve device ID for hwsim wireless simulation

[Keiichi Watanabe]

Hi,

On Tue, Jan 21, 2020 at 5:18 PM Johannes Berg <johannes@sipsolutions.net> wrote:
>
> Hi,
>
> > > I evidently forgot to request a TC vote on this before, hereby doing
> > > that.
> > >
> > > Fixes: https://github.com/oasis-tcs/virtio-spec/issues/68
> >
> > Is a TC vote for this issue in progress? I cannot find this issue in this list:
> > https://www.oasis-open.org/committees/ballots.php?wg_abbrev=virtio
>
> I have no idea what's going on, who's shepherding the process, who to
> ping, or anything like that, sorry.
>
> Right now I was biding my time and ignoring the issue for now, but it'll
> come up again soon since I do want to upstream the code for this that we
> already have ...
>
> So if anyone else has any thoughts, I'd greatly appreciate it.
>
> > I'm waiting for this issue resolved to request device ID 30 for video
> > devices in https://github.com/oasis-tcs/virtio-spec/issues/67
>
> I guess you don't really need to have this resolved to request a vote on
> the video device ID?

You're right. I just requested a TC vote for my change. Thanks.

Best regards,
Keiichi

>
> johannes
>

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Re: [virtio-comment] [PATCH] reserve device ID for hwsim wireless simulation

[Johannes Berg]

On Tue, 2020-01-07 at 13:40 +0100, Johannes Berg wrote:

> I evidently forgot to request a TC vote on this before, hereby doing
> that.
> 
> Fixes: https://github.com/oasis-tcs/virtio-spec/issues/68

Maybe this got lost in the noise? Or did I do something wrong?

Thanks,
johannes


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Re: [virtio-comment] [PATCH] reserve device ID for hwsim wireless simulation

[Johannes Berg]

Hi all,

[...]
> Since device ID 28 was previously requested, use 29.

I see that IDs 30 and 31 have been allocated
(https://github.com/oasis-tcs/virtio-spec/issues/67)
and they specifically pointed out that they skipped 29 that was
requested here...

TBH, this feels very arbitrary, and I'm just stuck on this thread here
all by myself without any comments.

Can somebody please point out to me what I should be doing?

Thanks,
johannes


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Re: [virtio-comment] [PATCH] reserve device ID for hwsim wireless simulation

[Cornelia Huck]

On Wed, 11 Mar 2020 10:03:55 +0100
Johannes Berg <johannes@sipsolutions.net> wrote:

> Hi all,
> 
> [...]
> > Since device ID 28 was previously requested, use 29.  
> 
> I see that IDs 30 and 31 have been allocated
> (https://github.com/oasis-tcs/virtio-spec/issues/67)
> and they specifically pointed out that they skipped 29 that was
> requested here...
> 
> TBH, this feels very arbitrary, and I'm just stuck on this thread here
> all by myself without any comments.
> 
> Can somebody please point out to me what I should be doing?
> 
> Thanks,
> johannes

^^ Michael, can you please open a ballot? It seems I can't do that...


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