[PATCH net-next v2 3/6] devlink: Add new "event_eq_size" generic device param
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STALE1767d
REVIEWED: 1 (0M)
From: Shay Drory <hidden>
Date: 2021-12-08 07:00:39
Also in:
lkml
Subsystem:
devlink, documentation, networking [general], the rest · Maintainers:
Jiri Pirko, Jonathan Corbet, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v2 of 4 in this series; 1 review trailer.
Revisions (4)
- v1 [diff vs current]
- v2 current
- v3 [diff vs current]
- v4 [diff vs current]
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 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)
--
2.21.3