linux-kernel - RE: [PATCH v2] tools: hv: kvp_daemon: make IPv6-only-injection work

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Date:	Wed, 17 Dec 2014 01:57:06 +0000
From:	Dexuan Cui <decui@...rosoft.com>
To:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"driverdev-devel@...uxdriverproject.org" 
	<driverdev-devel@...uxdriverproject.org>,
	"vkuznets@...hat.com" <vkuznets@...hat.com>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"apw@...onical.com" <apw@...onical.com>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"KY Srinivasan" <kys@...rosoft.com>
CC:	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: RE: [PATCH v2] tools: hv: kvp_daemon: make IPv6-only-injection work

> -----Original Message-----
> From: devel [mailto:driverdev-devel-bounces@...uxdriverproject.org] On
> Behalf Of Dexuan Cui
> Sent: Wednesday, December 10, 2014 19:33 PM
> To: gregkh@...uxfoundation.org; linux-kernel@...r.kernel.org; driverdev-
> devel@...uxdriverproject.org; vkuznets@...hat.com; olaf@...fle.de;
> apw@...onical.com; jasowang@...hat.com; KY Srinivasan
> Cc: Haiyang Zhang
> Subject: [PATCH v2] tools: hv: kvp_daemon: make IPv6-only-injection work
> 
> In the case the host only injects an IPv6 address, the dhcp_enabled flag is
> true (it's only for IPv4 according to Hyper-V host team), but we still need to
> proceed to parse the IPv6 information.
> 
> Cc: Vitaly Kuznetsov <vkuznets@...hat.com>
> Cc: K. Y. Srinivasan <kys@...rosoft.com>
> Signed-off-by: Dexuan Cui <decui@...rosoft.com>
> ---
> 
> v2: removed the distro-specific logic as Vitaly suggested.
> 
>  tools/hv/hv_kvp_daemon.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
> index 6a6432a..4b3ee35 100644
> --- a/tools/hv/hv_kvp_daemon.c
> +++ b/tools/hv/hv_kvp_daemon.c
> @@ -1308,16 +1308,17 @@ static int kvp_set_ip_info(char *if_name, struct
> hv_kvp_ipaddr_value *new_val)
>  	if (error)
>  		goto setval_error;
> 
> +	/*
> +	 * The dhcp_enabled flag is only for IPv4. In the case the host only
> +	 * injects an IPv6 address, the flag is true, but we still need to
> +	 * proceed to parse and pass the IPv6 information to the
> +	 * disto-specific script hv_set_ifconfig.
> +	 */
>  	if (new_val->dhcp_enabled) {
>  		error = kvp_write_file(file, "BOOTPROTO", "", "dhcp");
>  		if (error)
>  			goto setval_error;
> 
> -		/*
> -		 * We are done!.
> -		 */
> -		goto setval_done;
> -
>  	} else {
>  		error = kvp_write_file(file, "BOOTPROTO", "", "none");
>  		if (error)
> @@ -1345,7 +1346,6 @@ static int kvp_set_ip_info(char *if_name, struct
> hv_kvp_ipaddr_value *new_val)
>  	if (error)
>  		goto setval_error;
> 
> -setval_done:
>  	fclose(file);
> 
>  	/*
> --
> 1.9.1

Hi Vitaly,
Can you please ACK the v2 patch?
Or, please let me know if you have new comments.

Thanks,
-- Dexuan
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