Re: [PATCH v8 net-next 0/2] mv88e6xxx: Add MAB offload support

[netdev]

On 2022-11-15 11:28, Vladimir Oltean wrote:
> On Tue, Nov 15, 2022 at 11:26:55AM +0100, netdev@xxxxxxxxxxxxxxxxxxxx 
> wrote:
> > On 2022-11-15 10:30, Ido Schimmel wrote:
> > > On Sat, Nov 12, 2022 at 09:37:46PM +0100, Hans J. Schultz wrote:
> > > > This patchset adds MAB [1] offload support in mv88e6xxx.
> > > >
> > > > Patch #1: Fix a problem when reading the FID needed to get the VID.
> > > >
> > > > Patch #2: The MAB implementation for mv88e6xxx.
> > >
> > > Just to be sure, this was tested with bridge_locked_port.sh, right?
> >
> > As I have the phy regression I have given notice of, that has simply 
> > not
> > been possible. After maybe 50 resets it worked for me at a point
> > (something to do with timing), and I tested it manually.
> >
> > When I have tried to run the selftests, I get errors related to the 
> > phy
> > problem, which I have not been able to find a way around.
>
> What PHY regression?

I had a discussion with Jacub, which resulted in me sending a mail to
maintainers on this. The problem is shown below...


the phy is marvell/6097/88e3082

------------[ cut here ]------------
WARNING: CPU: 0 PID: 332 at drivers/net/phy/phy.c:975
phy_error+0x28/0x54
Modules linked in:
CPU: 0 PID: 332 Comm: kworker/0:0 Tainted: G        W          6.0.0 #17
Hardware name: Freescale i.MX27 (Device Tree Support)
Workqueue: events_power_efficient phy_state_machine
  unwind_backtrace from show_stack+0x18/0x1c
  show_stack from dump_stack_lvl+0x28/0x30
  dump_stack_lvl from __warn+0xb8/0x114
  __warn from warn_slowpath_fmt+0x80/0xbc
  warn_slowpath_fmt from phy_error+0x28/0x54
  phy_error from phy_state_machine+0xbc/0x218
  phy_state_machine from process_one_work+0x17c/0x244
  process_one_work from worker_thread+0x248/0x2cc
  worker_thread from kthread+0xb0/0xbc
  kthread from ret_from_fork+0x14/0x2c
Exception stack(0xc4a71fb0 to 0xc4a71ff8)
1fa0:                                     00000000 00000000 00000000
00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
---[ end trace 0000000000000000 ]---