On 6/21/15, 1:40 PM, Thomas Graf wrote:
On 06/20/15 at 07:27am, roopa wrote:
On 6/19/15, 11:39 AM, Robert Shearman wrote:
Sorry for not being clear, but I meant that there would have to be
lwtunnel_skb_lwstate functions for ipv4 and ipv6 to match the output
functions. So in the vxlan use case where it's using a netdevice, how
would it determine which one to call?
thanks for that clarification, and good point. I see some areas of the
kernel checking for skb->protocol to do the conversion (something like
below). I am guessing that is acceptable.
if (skb->protocol == htons(ETH_P_IPV6))
struct rt6_info *rt6 = (struct rt6_info *)skb_dst(skb);
I'm not yet convinced that it makes sense to offer the no-netdevice
shortcut for VXLAN. I'm not convinced we need yet another VXLAN data
path. In fact, I'm trying to get rid of the OVS one for this specific
reason.
I have no objection though if somebody comes up with an architecture
that can't just pass the required metadata between the namespaces and
do the actual encapsulation in a single net_device in the root/host
namespace.
Either way, I thin it's fair to defer to this to a later point. We
don't need to solve this for the first iteration of MPLS and VXLAN
implementation.
ack, thanks for your thoughts on this.
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