Add new device generic parameter to determine the size of the
asynchronous control events EQ.

For example, to reduce event EQ size to 64, execute:
$ devlink dev param set pci/0000:06:00.0 \
             name event_eq_size value 64 cmode driverinit
$ devlink dev reload pci/0000:06:00.0

Signed-off-by: Shay Drory <redacted>
Reviewed-by: Moshe Shemesh <redacted>
---
Documentation/networking/devlink/devlink-params.rst | 3 +++
include/net/devlink.h                               | 4 ++++
net/core/devlink.c                                  | 5 +++++
3 files changed, 12 insertions(+)

diff --git a/Documentation/networking/devlink/devlink-params.rst b/Documentation/networking/devlink/devlink-params.rst
index cd9342305a13..0eddee6e66f3 100644
--- a/Documentation/networking/devlink/devlink-params.rst
+++ b/Documentation/networking/devlink/devlink-params.rst

@@ -132,3 +132,6 @@ own name.
   * - ``io_eq_size``
     - u16
     - Control the size of I/O completion EQs.
+   * - ``event_eq_size``
+     - u16

+     - Control the size of asynchronous control events EQ.

diff --git a/include/net/devlink.h b/include/net/devlink.h
index b5f4acd0e0cd..8d5349d2fb68 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h

@@ -460,6 +460,7 @@ enum devlink_param_generic_id {

	DEVLINK_PARAM_GENERIC_ID_ENABLE_VNET,
	DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
	DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
+	DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,

	/* add new param generic ids above here*/
	__DEVLINK_PARAM_GENERIC_ID_MAX,

@@ -515,6 +516,9 @@ enum devlink_param_generic_id {

#define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME "io_eq_size"
#define DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE DEVLINK_PARAM_TYPE_U32

+#define DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME "event_eq_size"
+#define DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE DEVLINK_PARAM_TYPE_U32
+
#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 0d4e63d11585..d9f3c994e704 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c

@@ -4471,6 +4471,11 @@ static const struct devlink_param devlink_param_generic[] = {

		.name = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_NAME,
		.type = DEVLINK_PARAM_GENERIC_IO_EQ_SIZE_TYPE,
	},
+	{
+		.id = DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
+		.name = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME,
+		.type = DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE,
+	},
};

static int devlink_param_generic_verify(const struct devlink_param *param)
-- 
2.21.3