[PATCH] net/mlx5: fix FD configuration for Rx interrupt

[Matan Azrad]

From: David Marchand
> On Thu, Mar 10, 2022 at 6:04 PM Michael Baum <michaelba at nvidia.com>
> wrote:
> > > > # strace -r -f ./dpdk-dir/v21.11/examples/dpdk-l3fwd-power
> > > > --lcores
> > > > 0 at 3,1 at 5 -a 0000:82:00.0 --in-memory -- -p 0x1 -P --config '(0,0,1)'
> > > > ...
> > > > [pid 534983]      0.000348 epoll_wait(26, [], 1, 10) = 0
> > > > [pid 534983]      0.010082 read(24,
> > > >
> > > > For some reason, there is an event available for fd 18 right away
> > > > (which is the issue in the first place).
> >
> > I don't understand who is FD 18, I cannot see it in your log
> 
> I had refreshed the trace before sending, but did not update the mail, I meant fd
> 24.
> 
> 
> Now, looking from scratch (rather than my one month old mail),
> epoll_wait() returning 0 is normal since it's returning on a 10ms timeout.
> The mlx5 rx fd should be left in non blocking mode.

+1



 
> 
> --
> David Marchand