From: Moshe Shemesh <moshe@mellanox.com>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: Jiri Pirko <jiri@mellanox.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Moshe Shemesh <moshe@mellanox.com>
Subject: [PATCH net-next RFC v3 11/14] net/mlx5: Add devlink param enable_remote_dev_reset support
Date: Sun, 30 Aug 2020 18:27:31 +0300 [thread overview]
Message-ID: <1598801254-27764-12-git-send-email-moshe@mellanox.com> (raw)
In-Reply-To: <1598801254-27764-1-git-send-email-moshe@mellanox.com>
The enable_remote_dev_reset devlink param flags that the host admin
allows resets by other hosts. In case it is cleared mlx5 host PF driver
will send NACK on pci sync for firmware update reset request and the
command will fail.
By default enable_remote_dev_reset parameter is true, so pci sync for
firmware update reset is enabled.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
---
v1 -> v2:
- Have MLX5_FW_RESET_FLAGS_NACK_RESET_REQUEST instead of
MLX5_HEALTH_RESET_FLAGS_NACK_RESET_REQUEST
---
.../net/ethernet/mellanox/mlx5/core/devlink.c | 21 +++++++++++++
.../ethernet/mellanox/mlx5/core/fw_reset.c | 30 +++++++++++++++++++
.../ethernet/mellanox/mlx5/core/fw_reset.h | 2 ++
3 files changed, 53 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index f2f1f4e4ef25..ea759bb2a120 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
@@ -284,6 +284,24 @@ static int mlx5_devlink_large_group_num_validate(struct devlink *devlink, u32 id
}
#endif
+static int mlx5_devlink_enable_remote_dev_reset_set(struct devlink *devlink, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct mlx5_core_dev *dev = devlink_priv(devlink);
+
+ mlx5_fw_enable_remote_dev_reset_set(dev, ctx->val.vbool);
+ return 0;
+}
+
+static int mlx5_devlink_enable_remote_dev_reset_get(struct devlink *devlink, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct mlx5_core_dev *dev = devlink_priv(devlink);
+
+ ctx->val.vbool = mlx5_fw_enable_remote_dev_reset_get(dev);
+ return 0;
+}
+
static const struct devlink_param mlx5_devlink_params[] = {
DEVLINK_PARAM_DRIVER(MLX5_DEVLINK_PARAM_ID_FLOW_STEERING_MODE,
"flow_steering_mode", DEVLINK_PARAM_TYPE_STRING,
@@ -299,6 +317,9 @@ static const struct devlink_param mlx5_devlink_params[] = {
NULL, NULL,
mlx5_devlink_large_group_num_validate),
#endif
+ DEVLINK_PARAM_GENERIC(ENABLE_REMOTE_DEV_RESET, BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+ mlx5_devlink_enable_remote_dev_reset_get,
+ mlx5_devlink_enable_remote_dev_reset_set, NULL),
};
static void mlx5_devlink_set_params_init_values(struct devlink *devlink)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
index 1f9ad1f38d92..0df2ad9d555c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
@@ -5,6 +5,7 @@
enum {
MLX5_FW_RESET_FLAGS_RESET_REQUESTED,
+ MLX5_FW_RESET_FLAGS_NACK_RESET_REQUEST,
MLX5_FW_RESET_FLAGS_PENDING_COMP
};
@@ -22,6 +23,23 @@ struct mlx5_fw_reset {
int ret;
};
+void mlx5_fw_enable_remote_dev_reset_set(struct mlx5_core_dev *dev, bool enable)
+{
+ struct mlx5_fw_reset *fw_reset = dev->priv.fw_reset;
+
+ if (enable)
+ clear_bit(MLX5_FW_RESET_FLAGS_NACK_RESET_REQUEST, &fw_reset->reset_flags);
+ else
+ set_bit(MLX5_FW_RESET_FLAGS_NACK_RESET_REQUEST, &fw_reset->reset_flags);
+}
+
+bool mlx5_fw_enable_remote_dev_reset_get(struct mlx5_core_dev *dev)
+{
+ struct mlx5_fw_reset *fw_reset = dev->priv.fw_reset;
+
+ return !test_bit(MLX5_FW_RESET_FLAGS_NACK_RESET_REQUEST, &fw_reset->reset_flags);
+}
+
static int mlx5_reg_mfrl_set(struct mlx5_core_dev *dev, u8 reset_level,
u8 reset_type_sel, u8 sync_resp, bool sync_start)
{
@@ -76,6 +94,11 @@ static int mlx5_fw_set_reset_sync_ack(struct mlx5_core_dev *dev)
return mlx5_reg_mfrl_set(dev, MLX5_MFRL_REG_RESET_LEVEL3, 0, 1, false);
}
+static int mlx5_fw_set_reset_sync_nack(struct mlx5_core_dev *dev)
+{
+ return mlx5_reg_mfrl_set(dev, MLX5_MFRL_REG_RESET_LEVEL3, 0, 2, false);
+}
+
static void mlx5_fw_reset_complete_reload(struct mlx5_core_dev *dev)
{
struct mlx5_fw_reset *fw_reset = dev->priv.fw_reset;
@@ -169,7 +192,14 @@ static void mlx5_sync_reset_request_event(struct work_struct *work)
struct mlx5_fw_reset *fw_reset = container_of(work, struct mlx5_fw_reset,
reset_request_work);
struct mlx5_core_dev *dev = fw_reset->dev;
+ int err;
+ if (test_bit(MLX5_FW_RESET_FLAGS_NACK_RESET_REQUEST, &fw_reset->reset_flags)) {
+ err = mlx5_fw_set_reset_sync_nack(dev);
+ mlx5_core_warn(dev, "PCI Sync FW Update Reset Nack %s",
+ err ? "Failed" : "Sent");
+ return;
+ }
mlx5_sync_reset_set_reset_requested(dev);
if (mlx5_fw_set_reset_sync_ack(dev))
mlx5_core_warn(dev, "PCI Sync FW Update Reset Ack Failed.\n");
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.h b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.h
index d7ee951a2258..fd558dfe93fc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.h
@@ -6,6 +6,8 @@
#include "mlx5_core.h"
+void mlx5_fw_enable_remote_dev_reset_set(struct mlx5_core_dev *dev, bool enable);
+bool mlx5_fw_enable_remote_dev_reset_get(struct mlx5_core_dev *dev);
int mlx5_reg_mfrl_query(struct mlx5_core_dev *dev, u8 *reset_level, u8 *reset_type);
int mlx5_fw_set_reset_sync(struct mlx5_core_dev *dev, u8 reset_type_sel);
int mlx5_fw_set_live_patch(struct mlx5_core_dev *dev);
--
2.17.1
next prev parent reply other threads:[~2020-08-30 15:29 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-30 15:27 [PATCH net-next RFC v3 00/14] Add devlink reload action option Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 01/14] devlink: Add reload action option to devlink reload command Moshe Shemesh
2020-08-31 12:15 ` Jiri Pirko
2020-09-01 19:43 ` Moshe Shemesh
2020-09-02 9:46 ` Jiri Pirko
2020-09-02 15:30 ` Jakub Kicinski
2020-09-03 5:57 ` Jiri Pirko
2020-09-03 19:47 ` Jakub Kicinski
2020-09-04 9:04 ` Jiri Pirko
2020-09-04 19:56 ` Jakub Kicinski
2020-09-07 13:46 ` Moshe Shemesh
2020-09-07 17:58 ` Jakub Kicinski
2020-09-09 13:27 ` Moshe Shemesh
2020-09-09 19:24 ` Jakub Kicinski
2020-09-10 5:16 ` Vasundhara Volam
2020-09-10 6:51 ` Jiri Pirko
2020-08-30 15:27 ` [PATCH net-next RFC v3 02/14] devlink: Add reload actions counters Moshe Shemesh
2020-08-31 10:48 ` Jiri Pirko
2020-09-01 19:05 ` Moshe Shemesh
2020-09-02 0:01 ` Jakub Kicinski
2020-09-04 5:03 ` Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 03/14] devlink: Add reload actions counters to dev get Moshe Shemesh
2020-08-31 10:44 ` Jiri Pirko
2020-09-01 19:00 ` Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 04/14] net/mlx5: Add functions to set/query MFRL register Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 05/14] net/mlx5: Set cap for pci sync for fw update event Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 06/14] net/mlx5: Handle sync reset request event Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 07/14] net/mlx5: Handle sync reset now event Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 08/14] net/mlx5: Handle sync reset abort event Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 09/14] net/mlx5: Add support for devlink reload action fw activate Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 10/14] devlink: Add enable_remote_dev_reset generic parameter Moshe Shemesh
2020-08-30 15:27 ` Moshe Shemesh [this message]
2020-08-30 15:27 ` [PATCH net-next RFC v3 12/14] net/mlx5: Add support for fw live patch event Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 13/14] net/mlx5: Add support for devlink reload action fw activate no reset Moshe Shemesh
2020-08-30 15:27 ` [PATCH net-next RFC v3 14/14] devlink: Add Documentation/networking/devlink/devlink-reload.rst Moshe Shemesh
2020-08-31 10:49 ` [PATCH net-next RFC v3 00/14] Add devlink reload action option Jiri Pirko
2020-09-01 20:05 ` Moshe Shemesh
[not found] ` <36e30108-26e3-44ae-e133-48d412f7efe6@nvidia.com>
2020-09-02 7:55 ` Jiri Pirko
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=1598801254-27764-12-git-send-email-moshe@mellanox.com \
--to=moshe@mellanox.com \
--cc=davem@davemloft.net \
--cc=jiri@mellanox.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).