Re: [PATCH net 1/4] net/udp_gso: Allow TX timestamp with UDP GSO

[Fred Klassen]

> On May 23, 2019, at 2:59 PM, Willem de Bruijn <willemdebruijn.kernel@xxxxxxxxx> wrote:
> what exactly is the issue with IP_TOS?
> 
> If I understand correctly, the issue here is that the new 'P' option
> that polls on the error queue times out. This is unrelated to
> specifying TOS bits? Without zerocopy or timestamps, no message is
> expected on the error queue.

I was not able to get to the root cause, but I noticed that IP_TOS
CMSG was lost until I applied this fix. I also found it confusing as to
why that may be the case.