[PATCH net] hyperv: Fix the NETIF_F_SG flag setting in netvsc

[KY Srinivasan]

> -----Original Message-----
> From: Haiyang Zhang [mailto:haiyangz at microsoft.com]
> Sent: Wednesday, July 17, 2013 2:01 AM
> To: davem at davemloft.net; netdev at vger.kernel.org
> Cc: Haiyang Zhang; KY Srinivasan; olaf at aepfle.de; jasowang at redhat.com; linux-
> kernel at vger.kernel.org; devel at linuxdriverproject.org
> Subject: [PATCH net] hyperv: Fix the NETIF_F_SG flag setting in netvsc
> 
> SG mode is not currently supported by netvsc, so remove this flag for now.
> Otherwise, it will be unconditionally enabled by commit ec5f0615642
>     "Kill link between CSUM and SG features"
> Previously, the SG feature is disabled because CSUM is not set here.
> 
> Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com>
> Reviewed-by: K. Y. Srinivasan <kys at microsoft.com>

We would need to apply this patch to 3.9 and 3.10 as well that are currently broken.

K. Y
> ---
>  drivers/net/hyperv/netvsc_drv.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
> index 4dccead..23a0fff 100644
> --- a/drivers/net/hyperv/netvsc_drv.c
> +++ b/drivers/net/hyperv/netvsc_drv.c
> @@ -431,8 +431,8 @@ static int netvsc_probe(struct hv_device *dev,
>  	net->netdev_ops = &device_ops;
> 
>  	/* TODO: Add GSO and Checksum offload */
> -	net->hw_features = NETIF_F_SG;
> -	net->features = NETIF_F_SG | NETIF_F_HW_VLAN_CTAG_TX;
> +	net->hw_features = 0;
> +	net->features = NETIF_F_HW_VLAN_CTAG_TX;
> 
>  	SET_ETHTOOL_OPS(net, &ethtool_ops);
>  	SET_NETDEV_DEV(net, &dev->device);
> --
> 1.7.4.1
> 
>