[PATCH v2 0/5] Fix prestera driver fail to probe twice

Elad Nachman posted 5 patches 1 year, 10 months ago
drivers/net/ethernet/marvell/prestera/prestera_hw.c       | 8 ++++++++
drivers/net/ethernet/marvell/prestera/prestera_hw.h       | 1 +
drivers/net/ethernet/marvell/prestera/prestera_main.c     | 5 ++++-
drivers/net/ethernet/marvell/prestera/prestera_pci.c      | 7 ++++++-
drivers/net/ethernet/marvell/prestera/prestera_router.c   | 1 -
.../net/ethernet/marvell/prestera/prestera_router_hw.c    | 1 -
6 files changed, 19 insertions(+), 4 deletions(-)
[PATCH v2 0/5] Fix prestera driver fail to probe twice
Posted by Elad Nachman 1 year, 10 months ago
From: Elad Nachman <enachman@marvell.com>

Fix issues resulting from insmod, rmmod and insmod of the
prestera driver:

1. Call of firmware switch HW reset was missing, and is required
   in order to make the firmware loader shift to the correct state
   needed for loading the next firmware.
2. Time-out for waiting for firmware loader to be ready was too small.
3. memory referencing after freeing
4. MAC addresses wrapping
5. Missing SFP unbind (phylink release) of a port during the port release.

v2:
  1) Split first patch to firmware call for switch HW reset and to
     increasing of firmware loader wait to be ready timeout
  2) Explain why is switch HW reset call to the firmware required
     before shutdown in commit message, and fix wording
  3) Use a simpler bitwise-and on the last byte of the base MAC address
     instead of randomizing again the entire MAC address.
     reflect that change in the commit message, and explain why it is
     needed (switch HW implementation requirement).
  4) Add Fixes Tags to all commits.
  5) For timeout enlargement commit, fix wording in comment and move
     timeout units to milliseconds.
  6) Add Tested-By tags.
  7) Add patch to call prestera_port_sfp_unbind() from
     prestera_destroy_ports() in order to release phylink.

Elad Nachman (5):
  net: marvell: prestera: fix driver reload
  net: marvell: prestera: enlarge fw restart time
  net: marvell: prestera: fix memory use after free
  net: marvell: prestera: force good base mac
  net: marvell: prestera: unbind sfp port on exit

 drivers/net/ethernet/marvell/prestera/prestera_hw.c       | 8 ++++++++
 drivers/net/ethernet/marvell/prestera/prestera_hw.h       | 1 +
 drivers/net/ethernet/marvell/prestera/prestera_main.c     | 5 ++++-
 drivers/net/ethernet/marvell/prestera/prestera_pci.c      | 7 ++++++-
 drivers/net/ethernet/marvell/prestera/prestera_router.c   | 1 -
 .../net/ethernet/marvell/prestera/prestera_router_hw.c    | 1 -
 6 files changed, 19 insertions(+), 4 deletions(-)

-- 
2.25.1
Re: [PATCH v2 0/5] Fix prestera driver fail to probe twice
Posted by Andrew Lunn 1 year, 10 months ago
On Wed, Mar 20, 2024 at 07:20:03PM +0200, Elad Nachman wrote:
> From: Elad Nachman <enachman@marvell.com>
> 
> Fix issues resulting from insmod, rmmod and insmod of the
> prestera driver:
> 
> 1. Call of firmware switch HW reset was missing, and is required
>    in order to make the firmware loader shift to the correct state
>    needed for loading the next firmware.
> 2. Time-out for waiting for firmware loader to be ready was too small.
> 3. memory referencing after freeing
> 4. MAC addresses wrapping
> 5. Missing SFP unbind (phylink release) of a port during the port release.

I don't see any problems with 3-5. Maybe post them independent of the
first 2 and they can be merged.

Are you really saying it is impossible to determine if the hardware is
in the boot loader waiting for firmware, or is running the firmware?

   Andrew
Re: [PATCH v2 0/5] Fix prestera driver fail to probe twice
Posted by Kory Maincent 1 year, 10 months ago
On Wed, 20 Mar 2024 19:20:03 +0200
Elad Nachman <enachman@marvell.com> wrote:

> From: Elad Nachman <enachman@marvell.com>
> 
> Fix issues resulting from insmod, rmmod and insmod of the
> prestera driver:

Please add "net" prefixes to all your patches subject, like that:
[PATCH net v2 x/5]

I think the maintainers bots won't works if you don't.

Regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
Re: [PATCH v2 0/5] Fix prestera driver fail to probe twice
Posted by Jakub Kicinski 1 year, 10 months ago
On Thu, 21 Mar 2024 10:06:00 +0100 Kory Maincent wrote:
> > Fix issues resulting from insmod, rmmod and insmod of the
> > prestera driver:  
> 
> Please add "net" prefixes to all your patches subject, like that:
> [PATCH net v2 x/5]
> 
> I think the maintainers bots won't works if you don't.

They will default to net-next, which right now is perfectly fine.