[patch iproute2/net-next 1/2] devlink: introduce support for showing port flavours

[Jiri Pirko <jiri@resnulli.us>]

From: Jiri Pirko <jiri@mellanox.com>

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 devlink/devlink.c            | 20 ++++++++++++++++++++
 include/uapi/linux/devlink.h | 12 ++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/devlink/devlink.c b/devlink/devlink.c
index fa33684cb20a..df2c66dac1c7 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -1693,6 +1693,20 @@ static const char *port_type_name(uint32_t type)
 	}
 }
 
+static const char *port_flavour_name(uint16_t flavour)
+{
+	switch (flavour) {
+	case DEVLINK_PORT_FLAVOUR_PHYSICAL:
+		return "physical";
+	case DEVLINK_PORT_FLAVOUR_CPU:
+		return "cpu";
+	case DEVLINK_PORT_FLAVOUR_DSA:
+		return "dsa";
+	default:
+		return "<unknown flavour>";
+	}
+}
+
 static void pr_out_port(struct dl *dl, struct nlattr **tb)
 {
 	struct nlattr *pt_attr = tb[DEVLINK_ATTR_PORT_TYPE];
@@ -1717,6 +1731,12 @@ static void pr_out_port(struct dl *dl, struct nlattr **tb)
 	if (tb[DEVLINK_ATTR_PORT_IBDEV_NAME])
 		pr_out_str(dl, "ibdev",
 			   mnl_attr_get_str(tb[DEVLINK_ATTR_PORT_IBDEV_NAME]));
+	if (tb[DEVLINK_ATTR_PORT_FLAVOUR]) {
+		uint16_t port_flavour =
+				mnl_attr_get_u16(tb[DEVLINK_ATTR_PORT_FLAVOUR]);
+
+		pr_out_str(dl, "flavour", port_flavour_name(port_flavour));
+	}
 	if (tb[DEVLINK_ATTR_PORT_SPLIT_GROUP])
 		pr_out_uint(dl, "split_group",
 			    mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_SPLIT_GROUP]));
diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h
index 9f17286ec89f..23a3af6284b4 100644
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -132,6 +132,16 @@ enum devlink_eswitch_encap_mode {
 	DEVLINK_ESWITCH_ENCAP_MODE_BASIC,
 };
 
+enum devlink_port_flavour {
+	DEVLINK_PORT_FLAVOUR_PHYSICAL, /* Any kind of a port physically
+					* facing the user.
+					*/
+	DEVLINK_PORT_FLAVOUR_CPU, /* CPU port */
+	DEVLINK_PORT_FLAVOUR_DSA, /* Distributed switch architecture
+				   * interconnect port.
+				   */
+};
+
 enum devlink_attr {
 	/* don't change the order or add anything between, this is ABI! */
 	DEVLINK_ATTR_UNSPEC,
@@ -224,6 +234,8 @@ enum devlink_attr {
 	DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,	/* u64 */
 	DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,/* u64 */
 
+	DEVLINK_ATTR_PORT_FLAVOUR,		/* u16 */
+
 	/* add new attributes above here, update the policy in devlink.c */
 
 	__DEVLINK_ATTR_MAX,
-- 
2.14.3