Re: [Qemu-devel] [PATCH v3 1/4] net/announce: Allow optional list of interfaces

[Eric Blake]

On 6/10/19 1:43 PM, Dr. David Alan Gilbert (git) wrote:
> From: "Dr. David Alan Gilbert" <address@hidden>
> 
> Allow the caller to restrict the set of interfaces that announces are
> sent on.  The default is still to send on all interfaces.
> 
> e.g.
> 
>   { "execute": "announce-self", "arguments": { "initial": 50, "max": 550, 
> "rounds": 5, "step": 50, "interfaces": ["vn2","vn1"] } }
> 
> This doesn't affect the behaviour of migraiton announcments.
> 
> Note: There's still only one timer for the qmp command, so that
> performing an 'announce-self' on one list of interfaces followed
> by another 'announce-self' on another list will stop the announces
> on the existing set.
> 
> Signed-off-by: Dr. David Alan Gilbert <address@hidden>
> ---

> +++ b/qapi/net.json
> @@ -699,6 +699,9 @@
>  #
>  # @step: Delay increase (in ms) after each self-announcement attempt
>  #
> +# @interfaces: An optional list of interface names, which restrict the

restricts

> +#        announcment to the listed interfaces. (Since 4.1)

announcement

> +#
>  # Since: 4.0
>  ##
>  
> @@ -706,7 +709,8 @@
>    'data': { 'initial': 'int',
>              'max': 'int',
>              'rounds': 'int',
> -            'step': 'int' } }
> +            'step': 'int',
> +            '*interfaces': ['str'] } }
>  
>  ##
>  # @announce-self:
> @@ -718,9 +722,10 @@
>  #
>  # Example:
>  #
> -# -> { "execute": "announce-self"
> +# -> { "execute": "announce-self",

Embarrassing that we didn't notice that one earlier.

>  #      "arguments": {
> -#          "initial": 50, "max": 550, "rounds": 10, "step": 50 } }
> +#          "initial": 50, "max": 550, "rounds": 10, "step": 50,
> +#          "interfaces": ["vn2","vn3"] } }

Worth a space after the comma? Not required, but I think it looks nicer.

As I only focused on doc issues, I'll leave the full review to others.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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