Re: [PATCH net 3/5] fm10k: Implement ndo_gso_check()

["Vick, Matthew" <matthew.vick@intel.com>]

On 11/6/14, 1:15 PM, "Joe Stringer" <joestringer@nicira.com> wrote:

>Oh, I suppose we need to check the gso_type too. More like this?
>
>+static bool fm10k_gso_check(struct sk_buff *skb, struct net_device *dev)
>+{
>+       if ((skb_shinfo(skb)->gso_type & (SKB_GSO_UDP_TUNNEL |
>SKB_GSO_GRE)) &&
>+           !fm10k_tx_encap_offload(skb))
>+               return false;
>+
>+       return true;
>+}

It seems like the skb_shinfo(skb)->gso_type check should be in some more
generic ndo_gso_check that drivers can default to/extend. Then, we could
end up with something like

static bool fm10k_gso_check(struct sk_buff *skb, struct net_device *dev)
{
	if (skb_gso_check(skb, dev) && !fm10k_tx_encap_offload(skb))
		return false;

	return true;
}

This could even be simplified and still legible as

static bool fm10k_gso_check(struct sk_buff *skb, struct net_device *dev)
{
	return !(skb_gso_check(skb, dev) && !fm10k_tx_encap_offload(skb));
}

What do you think of this approach?