From: Jiri Pirko <jiri@resnulli.us>
To: Moshe Shemesh <moshe@mellanox.com>
Cc: Jakub Kicinski <kuba@kernel.org>,
Jacob Keller <jacob.e.keller@intel.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>,
Jiri Pirko <jiri@mellanox.com>,
Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Subject: Re: [PATCH net-next RFC 01/13] devlink: Add reload level option to devlink reload command
Date: Mon, 3 Aug 2020 16:14:42 +0200 [thread overview]
Message-ID: <20200803141442.GB2290@nanopsycho> (raw)
In-Reply-To: <0f2467fd-ee2e-1a51-f9c1-02f8a579d542@mellanox.com>
Sat, Aug 01, 2020 at 11:32:25PM CEST, moshe@mellanox.com wrote:
>
>On 7/31/2020 2:11 AM, Jakub Kicinski wrote:
>> On Thu, 30 Jul 2020 15:30:45 +0300 Moshe Shemesh wrote:
>> > > > > My expectations would be that the driver must perform the lowest
>> > > > > reset level possible that satisfies the requested functional change.
>> > > > > IOW driver may do more, in fact it should be acceptable for the
>> > > > > driver to always for a full HW reset (unless --live or other
>> > > > > constraint is specified).
>> > > > OK, but some combinations may still not be valid for specific driver
>> > > > even if it tries lowest level possible.
>> > > Can you give an example?
>> > For example take the combination of fw-live-patch and param-init.
>> >
>> > The fw-live-patch needs no re-initialization, while the param-init
>> > requires driver re-initialization.
>> >
>> > So the only way to do that is to the one command after the other, not
>> > really combining.
>> You need to read my responses more carefully. I don't have
>> fw-live-patch in my proposal. The operation is fw-activate,
>> --live is independent and an constraint, not an operation.
>
>
>OK, I probably didn't get the whole picture right.
>
>I am not sure I got it yet, please review if that's the uAPI that you mean
>to:
>
>devlink dev reload [ net-ns-respawn { PID | NAME | ID } ] [ driver-param-init
>] [ fw-activate [ --live] ]
Jakub, why do you prefer to have another extra level-specific option
"live"? I think it is clear to have it as a separate level. The behaviour
of the operation is quite different.
>
>
>Also, I recall that before devlink param was added the devlink reload was
>used for devlink resources.
Yes. That was the primary usecase. That is also why mlxsw does fw reset,
because the fw reset is needed in order to pass resources configuration.
So I don't think that the name should be "driver-param-init" as it is
not specific to params.
>
>I am not sure it is still used for devlink resources as I don't see it in the
>code of devlink reload.
>
>But if it is we probably should add it as another operation.
>
>Jiri, please comment on that.
>
next prev parent reply other threads:[~2020-08-03 14:14 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-27 11:02 [PATCH net-next RFC 00/13] Add devlink reload level option Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 01/13] devlink: Add reload level option to devlink reload command Moshe Shemesh
2020-07-28 0:58 ` Jakub Kicinski
2020-07-28 13:58 ` Jiri Pirko
2020-07-28 16:47 ` Jacob Keller
2020-07-28 18:44 ` Jakub Kicinski
2020-07-28 19:18 ` Jacob Keller
2020-07-28 20:06 ` Jakub Kicinski
2020-07-29 14:54 ` Moshe Shemesh
2020-07-29 21:07 ` Jakub Kicinski
2020-07-30 12:30 ` Moshe Shemesh
2020-07-30 23:11 ` Jakub Kicinski
2020-08-01 21:32 ` Moshe Shemesh
2020-08-03 14:14 ` Jiri Pirko [this message]
2020-08-03 20:57 ` Jakub Kicinski
2020-08-04 10:04 ` Jiri Pirko
2020-08-04 20:39 ` Jakub Kicinski
2020-08-05 11:02 ` Jiri Pirko
2020-08-06 18:25 ` Jakub Kicinski
2020-08-06 22:56 ` Jacob Keller
2020-08-09 13:21 ` Moshe Shemesh
2020-08-10 16:53 ` Jakub Kicinski
2020-08-10 17:09 ` Jacob Keller
2020-08-10 18:17 ` Jakub Kicinski
2020-08-11 5:46 ` Jiri Pirko
2020-07-27 11:02 ` [PATCH net-next RFC 02/13] devlink: Add reload levels data to dev get Moshe Shemesh
2020-07-28 0:58 ` Jakub Kicinski
2020-07-29 14:37 ` Moshe Shemesh
2020-07-29 21:11 ` Jakub Kicinski
2020-07-30 12:05 ` Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 03/13] net/mlx5: Add functions to set/query MFRL register Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 04/13] net/mlx5: Set cap for pci sync for fw update event Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 05/13] net/mlx5: Handle sync reset request event Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 06/13] net/mlx5: Handle sync reset now event Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 07/13] net/mlx5: Handle sync reset abort event Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 08/13] net/mlx5: Add support for devlink reload level fw reset Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 09/13] devlink: Add enable_remote_dev_reset generic parameter Moshe Shemesh
2020-07-28 0:59 ` Jakub Kicinski
2020-07-29 14:42 ` Moshe Shemesh
2020-07-29 20:57 ` Jakub Kicinski
2020-07-30 12:08 ` Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 10/13] net/mlx5: Add devlink param enable_remote_dev_reset support Moshe Shemesh
2020-07-28 0:59 ` Jakub Kicinski
2020-07-27 11:02 ` [PATCH net-next RFC 11/13] net/mlx5: Add support for fw live patch event Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 12/13] net/mlx5: Add support for devlink reload level live patch Moshe Shemesh
2020-07-27 11:02 ` [PATCH net-next RFC 13/13] devlink: Add Documentation/networking/devlink/devlink-reload.rst Moshe Shemesh
2020-07-28 5:25 ` [PATCH net-next RFC 00/13] Add devlink reload level option Vasundhara Volam
2020-07-28 16:43 ` Jacob Keller
2020-08-03 10:24 ` Vasundhara Volam
2020-08-03 12:17 ` Moshe Shemesh
2020-08-03 12:47 ` Vasundhara Volam
2020-08-03 13:52 ` Moshe Shemesh
2020-08-04 10:13 ` Vasundhara Volam
2020-08-05 6:32 ` Moshe Shemesh
2020-08-05 6:55 ` Vasundhara Volam
2020-08-05 8:20 ` Moshe Shemesh
2020-08-12 9:34 ` Vasundhara Volam
2020-07-28 16:37 ` Jacob Keller
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