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From:   Danielle Ratson <danieller@nvidia.com>
To:     <netdev@vger.kernel.org>
CC:     <mkubecek@suse.cz>, <f.fainelli@gmail.com>, <kuba@kernel.org>,
        <andrew@lunn.ch>, <mlxsw@nvidia.com>,
        Danielle Ratson <danieller@nvidia.com>
Subject: [PATCH ethtool v2 2/5] netlink: settings: Add netlink support for lanes parameter
Date:   Tue, 2 Feb 2021 20:25:10 +0200
Message-ID: <20210202182513.325864-3-danieller@nvidia.com>
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Add support for "ethtool -s <dev> lanes N ..." for setting a specific
number of lanes.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
---
 ethtool.c          | 1 +
 netlink/settings.c | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/ethtool.c b/ethtool.c
index 585aafa..fcb09f7 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -5620,6 +5620,7 @@ static const struct option args[] =3D {
 		.nlfunc	=3D nl_sset,
 		.help	=3D "Change generic options",
 		.xhelp	=3D "		[ speed %d ]\n"
+			  "		[ lanes %d ]\n"
 			  "		[ duplex half|full ]\n"
 			  "		[ port tp|aui|bnc|mii|fibre|da ]\n"
 			  "		[ mdix auto|on|off ]\n"
diff --git a/netlink/settings.c b/netlink/settings.c
index 90c28b1..6cb5d5b 100644
--- a/netlink/settings.c
+++ b/netlink/settings.c
@@ -20,6 +20,7 @@
 struct link_mode_info {
 	enum link_mode_class	class;
 	u32			speed;
+	u32			lanes;
 	u8			duplex;
 };
=20
@@ -1067,6 +1068,13 @@ static const struct param_parser sset_params[] =3D {
 		.handler	=3D nl_parse_direct_u32,
 		.min_argc	=3D 1,
 	},
+	{
+		.arg		=3D "lanes",
+		.group		=3D ETHTOOL_MSG_LINKMODES_SET,
+		.type		=3D ETHTOOL_A_LINKMODES_LANES,
+		.handler	=3D nl_parse_direct_u32,
+		.min_argc	=3D 1,
+	},
 	{
 		.arg		=3D "duplex",
 		.group		=3D ETHTOOL_MSG_LINKMODES_SET,
--=20
2.26.2