netdev - Re: [PATCH iproute2] iptuntap: fix multi-queue flag display

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Date:   Tue, 14 Sep 2021 10:22:19 +0200
From:   Maxime Coquelin <maxime.coquelin@...hat.com>
To:     David Marchand <david.marchand@...hat.com>,
        stephen@...workplumber.org
Cc:     netdev@...r.kernel.org, sriram.narasimhan@...com,
        jasowang@...hat.com
Subject: Re: [PATCH iproute2] iptuntap: fix multi-queue flag display



On 9/1/21 5:48 PM, David Marchand wrote:
> When creating a tap with multi_queue flag, this flag is not displayed
> when dumping:
> 
> $ ip tuntap add tap23 mode tap multi_queue
> $ ip tuntap
> tap23: tap persist0x100
> 
> While at it, add a space between known flags and hexdump of unknown
> ones.
> 
> Fixes: c41e038f48a3 ("iptuntap: allow creation of multi-queue tun/tap device")
> Signed-off-by: David Marchand <david.marchand@...hat.com>
> ---
>  ip/iptuntap.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/ip/iptuntap.c b/ip/iptuntap.c
> index 9cdb4a80..96ca1ae7 100644
> --- a/ip/iptuntap.c
> +++ b/ip/iptuntap.c
> @@ -243,6 +243,9 @@ static void print_flags(long flags)
>  	if (flags & IFF_ONE_QUEUE)
>  		print_string(PRINT_ANY, NULL, " %s", "one_queue");
>  
> +	if (flags & IFF_MULTI_QUEUE)
> +		print_string(PRINT_ANY, NULL, " %s", "multi_queue");
> +
>  	if (flags & IFF_VNET_HDR)
>  		print_string(PRINT_ANY, NULL, " %s", "vnet_hdr");
>  
> @@ -253,9 +256,10 @@ static void print_flags(long flags)
>  		print_string(PRINT_ANY, NULL, " %s", "filter");
>  
>  	flags &= ~(IFF_TUN | IFF_TAP | IFF_NO_PI | IFF_ONE_QUEUE |
> -		   IFF_VNET_HDR | IFF_PERSIST | IFF_NOFILTER);
> +		   IFF_MULTI_QUEUE | IFF_VNET_HDR | IFF_PERSIST |
> +		   IFF_NOFILTER);
>  	if (flags)
> -		print_0xhex(PRINT_ANY, NULL, "%#llx", flags);
> +		print_0xhex(PRINT_ANY, NULL, " %#llx", flags);
>  
>  	close_json_array(PRINT_JSON, NULL);
>  }
> 

Reviewed-by: Maxime Coquelin <maxime.coquelin@...hat.com>

Thanks,
Maxime