Re: [PATCH net-next 1/1] hyperv: Properly handle checksum offload

[Stephen Hemminger]

On Fri, 25 Apr 2014 11:45:14 -0700
"K. Y. Srinivasan" <kys@xxxxxxxxxxxxx> wrote:

> @@ -474,6 +477,9 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
>  	csum_info = (struct ndis_tcp_ip_checksum_info *)((void *)ppi +
>  			ppi->ppi_offset);
>  
> +	ip_hdr(skb)->check = 0;
> +	csum_info->transmit.ip_header_checksum = 1;
> +
>  	if (net_trans_info & (INFO_IPV4 << 16))
>  		csum_info->transmit.is_ipv4 = 1;
>  	else

Linux doesn't need or want IP checksum offload.
It will not have any performance gain.
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