[ovs-dev] Kernel/Userspace Action Mismatch
Pravin Shelar
pshelar at nicira.com
Thu Dec 18 18:15:20 UTC 2014
On Wed, Dec 17, 2014 at 10:50 PM, Justin Pettit <jpettit at nicira.com> wrote:
> Hi, Pravin. I think commit a36de77 (openvswitch: Userspace tunneling.) introduces a problem when new actions are added in the kernel. This part makes the kernel's idea of actions defined after _TUNNEL_POP different from userspace:
>
> -=-=-=-=-=-=-=-
> @@ -636,6 +663,10 @@ enum ovs_action_attr {
> * The data must be zero for the unmasked
> * bits. */
>
> +#ifndef __KERNEL__
> + OVS_ACTION_ATTR_TUNNEL_PUSH, /* struct ovs_action_push_tnl*/
> + OVS_ACTION_ATTR_TUNNEL_POP, /* u32 port number. */
> +#endif
> __OVS_ACTION_ATTR_MAX
> };
> -=-=-=-=-=-=-=-
>
> The problem is that userspace generates these actions for the kernel, so the enums for any new actions are off by two.
>
All new actions should be added before these userspace only actions.
So that the action ID remains same for userspace and kernel module.
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