diff mbox series

[net-next,v2,3/6] devlink: Add new "event_eq_size" generic device param

Message ID 20211208070006.13100-4-shayd@nvidia.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net/mlx5: Memory optimizations | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 371 this patch: 371
netdev/cc_maintainers warning 2 maintainers not CCed: linux-doc@vger.kernel.org corbet@lwn.net
netdev/build_clang success Errors and warnings before: 46 this patch: 46
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 520 this patch: 520
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 33 lines checked
netdev/kdoc success Errors and warnings before: 14 this patch: 14
netdev/source_inline success Was 0 now: 0

Commit Message

Shay Drori Dec. 8, 2021, 7 a.m. UTC 
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 <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
---
 Documentation/networking/devlink/devlink-params.rst | 3 +++
 include/net/devlink.h                               | 4 ++++
 net/core/devlink.c                                  | 5 +++++
 3 files changed, 12 insertions(+)
diff mbox series

Patch

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 61efa45b8786..99b06740a918 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_U16
 
+#define DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_NAME "event_eq_size"
+#define DEVLINK_PARAM_GENERIC_EVENT_EQ_SIZE_TYPE DEVLINK_PARAM_TYPE_U16
+
 #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)