netlink: spec: add shaper YAML spec

Define the user-space visible interface to query, configure and delete
network shapers via yaml definition.

Add dummy implementations for the relevant NL callbacks.

set() and delete() operations touch a single shaper creating/updating or
deleting it.
The group() operation creates a shaper's group, nesting multiple input
shapers under the specified output shaper.

Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://patch.msgid.link/7a33a1ff370bdbcd0cd3f909575c912cd56f41da.1728460186.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 78 insertions, 0 deletions

diff --git a/include/uapi/linux/net_shaper.h b/include/uapi/linux/net_shaper.h
new file mode 100644
index 000000000000..9e3fa63618ee
--- /dev/null
+++ b/include/uapi/linux/net_shaper.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
+/* Do not edit directly, auto-generated from: */
+/*	Documentation/netlink/specs/net_shaper.yaml */
+/* YNL-GEN uapi header */
+
+#ifndef _UAPI_LINUX_NET_SHAPER_H
+#define _UAPI_LINUX_NET_SHAPER_H
+
+#define NET_SHAPER_FAMILY_NAME		"net-shaper"
+#define NET_SHAPER_FAMILY_VERSION	1
+
+/**
+ * enum net_shaper_scope - Defines the shaper @id interpretation.
+ * @NET_SHAPER_SCOPE_UNSPEC: The scope is not specified.
+ * @NET_SHAPER_SCOPE_NETDEV: The main shaper for the given network device.
+ * @NET_SHAPER_SCOPE_QUEUE: The shaper is attached to the given device queue,
+ *   the @id represents the queue number.
+ * @NET_SHAPER_SCOPE_NODE: The shaper allows grouping of queues or other node
+ *   shapers; can be nested in either @netdev shapers or other @node shapers,
+ *   allowing placement in any location of the scheduling tree, except leaves
+ *   and root.
+ */
+enum net_shaper_scope {
+	NET_SHAPER_SCOPE_UNSPEC,
+	NET_SHAPER_SCOPE_NETDEV,
+	NET_SHAPER_SCOPE_QUEUE,
+	NET_SHAPER_SCOPE_NODE,
+
+	/* private: */
+	__NET_SHAPER_SCOPE_MAX,
+	NET_SHAPER_SCOPE_MAX = (__NET_SHAPER_SCOPE_MAX - 1)
+};
+
+/**
+ * enum net_shaper_metric - Different metric supported by the shaper.
+ * @NET_SHAPER_METRIC_BPS: Shaper operates on a bits per second basis.
+ * @NET_SHAPER_METRIC_PPS: Shaper operates on a packets per second basis.
+ */
+enum net_shaper_metric {
+	NET_SHAPER_METRIC_BPS,
+	NET_SHAPER_METRIC_PPS,
+};
+
+enum {
+	NET_SHAPER_A_HANDLE = 1,
+	NET_SHAPER_A_METRIC,
+	NET_SHAPER_A_BW_MIN,
+	NET_SHAPER_A_BW_MAX,
+	NET_SHAPER_A_BURST,
+	NET_SHAPER_A_PRIORITY,
+	NET_SHAPER_A_WEIGHT,
+	NET_SHAPER_A_IFINDEX,
+	NET_SHAPER_A_PARENT,
+	NET_SHAPER_A_LEAVES,
+
+	__NET_SHAPER_A_MAX,
+	NET_SHAPER_A_MAX = (__NET_SHAPER_A_MAX - 1)
+};
+
+enum {
+	NET_SHAPER_A_HANDLE_SCOPE = 1,
+	NET_SHAPER_A_HANDLE_ID,
+
+	__NET_SHAPER_A_HANDLE_MAX,
+	NET_SHAPER_A_HANDLE_MAX = (__NET_SHAPER_A_HANDLE_MAX - 1)
+};
+
+enum {
+	NET_SHAPER_CMD_GET = 1,
+	NET_SHAPER_CMD_SET,
+	NET_SHAPER_CMD_DELETE,
+	NET_SHAPER_CMD_GROUP,
+
+	__NET_SHAPER_CMD_MAX,
+	NET_SHAPER_CMD_MAX = (__NET_SHAPER_CMD_MAX - 1)
+};
+
+#endif /* _UAPI_LINUX_NET_SHAPER_H */