[PATCH 5/6] Drivers: net: hyperv: Enable send side checksum offload

[KY Srinivasan]

> -----Original Message-----
> From: David Miller [mailto:davem at davemloft.net]
> Sent: Friday, March 7, 2014 1:04 AM
> To: KY Srinivasan
> Cc: netdev at vger.kernel.org; linux-kernel at vger.kernel.org;
> devel at linuxdriverproject.org; olaf at aepfle.de; apw at canonical.com;
> jasowang at redhat.com
> Subject: Re: [PATCH 5/6] Drivers: net: hyperv: Enable send side checksum
> offload
> 
> From: "K. Y. Srinivasan" <kys at microsoft.com>
> Date: Thu,  6 Mar 2014 03:13:09 -0800
> 
> > +bool get_net_transport_info(struct sk_buff *skb, bool *is_v4,
> > +				bool *is_tcp, bool *is_udp, u32 *trans_off) {
> 
> Returning so many values like this is awkward, at best.
> 
> Why not return a well defined bitmask:
> 
> #define TRANSPORT_INFO_SUCCESS	0x00000001
> #define TRANSPORT_INFO_TCP	0x00000002
> #define TRANSPORT_INFO_UDP	0x00000004
> 
> Then the only value you have to return by reference is trans_off.

I also need information on the IP version as well. If it is ok with you, I will use the return
value to get information on the network protocol and return information on transport via
reference - protocol and the offset.
 
Regards,

K. Y