netdev - [PATCH iproute2-next 2/3] devlink: Expose number of port lanes

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Message-Id: <20200712080413.15435-3-danieller@mellanox.com>
Date:   Sun, 12 Jul 2020 11:04:12 +0300
From:   Danielle Ratson <danieller@...lanox.com>
To:     netdev@...r.kernel.org
Cc:     dsahern@...il.com, stephen@...workplumber.org, mlxsw@...lanox.com,
        Danielle Ratson <danieller@...lanox.com>
Subject: [PATCH iproute2-next 2/3] devlink: Expose number of port lanes

Add a new attribute that indicates the port's number of lanes to devlink port.

Expose the attribute to user space as RO value, for example:

$devlink port show swp1
pci/0000:03:00.0/61: type eth netdev swp1 flavour physical port 1 lanes 1

Signed-off-by: Danielle Ratson <danieller@...lanox.com>
Reviewed-by: Jiri Pirko <jiri@...lanox.com>
---
 devlink/devlink.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/devlink/devlink.c b/devlink/devlink.c
index 535c98d1..4aeb9f34 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -3398,6 +3398,10 @@ static void pr_out_port(struct dl *dl, struct nlattr **tb)
 	if (tb[DEVLINK_ATTR_PORT_SPLIT_GROUP])
 		print_uint(PRINT_ANY, "split_group", " split_group %u",
 			   mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_SPLIT_GROUP]));
+	if (tb[DEVLINK_ATTR_PORT_LANES])
+		print_uint(PRINT_ANY, "lanes", " lanes %u",
+			   mnl_attr_get_u32(tb[DEVLINK_ATTR_PORT_LANES]));
+
 	pr_out_port_function(dl, tb);
 	pr_out_port_handle_end(dl);
 }
-- 
2.20.1