On Fri, 2016-04-01 at 10:13 +0800, Jason Wang wrote:
> > The problem is we want to support busy polling for tun. This needs > napi_id to be passed to tun socket by sk_mark_napi_id() during > tun_net_xmit(). But before reaching this, XPS will set sender_cpu will > make us can't see correct napi_id. > Looks like napi_id should have precedence then ? Only forwarding should allow the field to be cleared to allow XPS to do its job. Maybe skb_sender_cpu_clear() was removed too early (commit 64d4e3431e686dc37ce388ba531c4c4e866fb141) Look, it is 8pm here, I am pretty sure a solution can be found, but I am also need to take a break, I started at 3am today...
