linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Moshe Shemesh <moshe@mellanox.com>
To: "David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>, Jiri Pirko <jiri@nvidia.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	Moshe Shemesh <moshe@mellanox.com>
Subject: [PATCH net-next 12/16] devlink: Add enable_remote_dev_reset generic parameter
Date: Thu,  1 Oct 2020 16:59:15 +0300	[thread overview]
Message-ID: <1601560759-11030-13-git-send-email-moshe@mellanox.com> (raw)
In-Reply-To: <1601560759-11030-1-git-send-email-moshe@mellanox.com>

The enable_remote_dev_reset devlink param flags that the host admin
allows device resets that can be initiated by other hosts. This
parameter is useful for setups where a device is shared by different
hosts, such as multi-host setup. Once the user set this parameter to
false, the driver should NACK any attempt to reset the device while the
driver is loaded.

Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
---
 Documentation/networking/devlink/devlink-params.rst | 6 ++++++
 include/net/devlink.h                               | 4 ++++
 net/core/devlink.c                                  | 5 +++++
 3 files changed, 15 insertions(+)

diff --git a/Documentation/networking/devlink/devlink-params.rst b/Documentation/networking/devlink/devlink-params.rst
index d075fd090b3d..54c9f107c4b0 100644
--- a/Documentation/networking/devlink/devlink-params.rst
+++ b/Documentation/networking/devlink/devlink-params.rst
@@ -108,3 +108,9 @@ own name.
    * - ``region_snapshot_enable``
      - Boolean
      - Enable capture of ``devlink-region`` snapshots.
+   * - ``enable_remote_dev_reset``
+     - Boolean
+     - Enable device reset by remote host. When cleared, the device driver
+       will NACK any attempt of other host to reset the device. This parameter
+       is useful for setups where a device is shared by different hosts, such
+       as multi-host setup.
diff --git a/include/net/devlink.h b/include/net/devlink.h
index a4ccb83bbd2c..0a1c88805627 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -464,6 +464,7 @@ enum devlink_param_generic_id {
 	DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
 	DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
 	DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
+	DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
 
 	/* add new param generic ids above here*/
 	__DEVLINK_PARAM_GENERIC_ID_MAX,
@@ -501,6 +502,9 @@ enum devlink_param_generic_id {
 #define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME "enable_roce"
 #define DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE DEVLINK_PARAM_TYPE_BOOL
 
+#define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME "enable_remote_dev_reset"
+#define DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE DEVLINK_PARAM_TYPE_BOOL
+
 #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate)	\
 {									\
 	.id = DEVLINK_PARAM_GENERIC_ID_##_id,				\
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 3b6bd3b4d346..4f074c81a5e4 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -3484,6 +3484,11 @@ static const struct devlink_param devlink_param_generic[] = {
 		.name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
 		.type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
 	},
+	{
+		.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
+		.name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
+		.type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
+	},
 };
 
 static int devlink_param_generic_verify(const struct devlink_param *param)
-- 
2.18.2


  parent reply	other threads:[~2020-10-01 14:02 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-01 13:59 [PATCH net-next 00/16] Add devlink reload action and limit options Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 01/16] devlink: Change devlink_reload_supported() param type Moshe Shemesh
2020-10-01 20:54   ` Jakub Kicinski
2020-10-02 15:13   ` Jiri Pirko
2020-10-05 18:34   ` Jacob Keller
2020-10-01 13:59 ` [PATCH net-next 02/16] devlink: Add reload action option to devlink reload command Moshe Shemesh
2020-10-01 20:59   ` Jakub Kicinski
2020-10-02 15:19   ` Jiri Pirko
2020-10-04  6:30     ` Moshe Shemesh
2020-10-03  7:52   ` Jiri Pirko
2020-10-04  6:45     ` Moshe Shemesh
2020-10-05 18:39   ` Jacob Keller
2020-10-01 13:59 ` [PATCH net-next 03/16] devlink: Add devlink reload limit option Moshe Shemesh
2020-10-01 21:14   ` Jakub Kicinski
2020-10-02 15:01     ` Moshe Shemesh
2020-10-01 21:15   ` Jakub Kicinski
2020-10-03  7:51   ` Jiri Pirko
2020-10-03 15:04     ` Jakub Kicinski
2020-10-04  7:18       ` Moshe Shemesh
2020-10-05 18:53       ` Jacob Keller
2020-10-04  6:42     ` Moshe Shemesh
2020-10-05 12:18       ` Jiri Pirko
2020-10-05 18:45   ` Jacob Keller
2020-10-01 13:59 ` [PATCH net-next 04/16] devlink: Add reload stats Moshe Shemesh
2020-10-01 21:25   ` Jakub Kicinski
2020-10-02 15:07     ` Moshe Shemesh
2020-10-03  9:00   ` Jiri Pirko
2020-10-04  6:59     ` Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 05/16] devlink: Add remote " Moshe Shemesh
2020-10-01 21:48   ` Jakub Kicinski
2020-10-03  9:05   ` Jiri Pirko
2020-10-04  7:09     ` Moshe Shemesh
2020-10-05 19:12       ` Jacob Keller
2020-10-07  5:41         ` Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 06/16] net/mlx5: Add functions to set/query MFRL register Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 07/16] net/mlx5: Set cap for pci sync for fw update event Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 08/16] net/mlx5: Handle sync reset request event Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 09/16] net/mlx5: Handle sync reset now event Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 10/16] net/mlx5: Handle sync reset abort event Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 11/16] net/mlx5: Add support for devlink reload action fw activate Moshe Shemesh
2020-10-01 13:59 ` Moshe Shemesh [this message]
2020-10-01 13:59 ` [PATCH net-next 13/16] net/mlx5: Add devlink param enable_remote_dev_reset support Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 14/16] net/mlx5: Add support for fw live patch event Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 15/16] net/mlx5: Add support for devlink reload limit no reset Moshe Shemesh
2020-10-01 21:52   ` Jakub Kicinski
2020-10-02 15:08     ` Moshe Shemesh
2020-10-01 13:59 ` [PATCH net-next 16/16] devlink: Add Documentation/networking/devlink/devlink-reload.rst Moshe Shemesh
2020-10-03  9:14   ` Jiri Pirko
2020-10-04  7:15     ` Moshe Shemesh

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1601560759-11030-13-git-send-email-moshe@mellanox.com \
    --to=moshe@mellanox.com \
    --cc=davem@davemloft.net \
    --cc=jiri@nvidia.com \
    --cc=kuba@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).