netdev - [patch iproute2-next v5 6/7] devlink: print nested handle for port function

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Date: Tue,  7 Nov 2023 09:06:06 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: stephen@...workplumber.org,
	dsahern@...il.com,
	daniel.machon@...rochip.com
Subject: [patch iproute2-next v5 6/7] devlink: print nested handle for port function

From: Jiri Pirko <jiri@...dia.com>

If port function contains nested handle attribute, print it.

Signed-off-by: Jiri Pirko <jiri@...dia.com>
---
v2->v3:
- rebased on top of new patch "devlink: extend pr_out_nested_handle() to
  print object"
---
 devlink/devlink.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/devlink/devlink.c b/devlink/devlink.c
index f276026b9ba7..ae31e7cf34e3 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -772,6 +772,7 @@ static const enum mnl_attr_data_type
 devlink_function_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
 	[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR ] = MNL_TYPE_BINARY,
 	[DEVLINK_PORT_FN_ATTR_STATE] = MNL_TYPE_U8,
+	[DEVLINK_PORT_FN_ATTR_DEVLINK] = MNL_TYPE_NESTED,
 };
 
 static int function_attr_cb(const struct nlattr *attr, void *data)
@@ -2896,6 +2897,22 @@ static void pr_out_nested_handle(struct nlattr *nla_nested_dl)
 	__pr_out_nested_handle(NULL, nla_nested_dl, false);
 }
 
+static void pr_out_nested_handle_obj(struct dl *dl,
+				     struct nlattr *nla_nested_dl,
+				     bool obj_start, bool obj_end)
+{
+	if (obj_start) {
+		pr_out_object_start(dl, "nested_devlink");
+		check_indent_newline(dl);
+	}
+	__pr_out_nested_handle(dl, nla_nested_dl, true);
+	if (obj_end) {
+		if (!dl->json_output)
+			__pr_out_indent_dec();
+		pr_out_object_end(dl);
+	}
+}
+
 static bool cmp_arr_last_port_handle(struct dl *dl, const char *bus_name,
 				     const char *dev_name, uint32_t port_index)
 {
@@ -4839,6 +4856,9 @@ static void pr_out_port_function(struct dl *dl, struct nlattr **tb_port)
 				     port_fn_caps->value & DEVLINK_PORT_FN_CAP_IPSEC_PACKET ?
 				     "enable" : "disable");
 	}
+	if (tb[DEVLINK_PORT_FN_ATTR_DEVLINK])
+		pr_out_nested_handle_obj(dl, tb[DEVLINK_PORT_FN_ATTR_DEVLINK],
+					 true, true);
 
 	if (!dl->json_output)
 		__pr_out_indent_dec();
-- 
2.41.0