netdev - [PATCH ethtool 2/5] netlink: settings: Add netlink support for lanes parameter

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Message-Id: <20210106131006.2110613-3-danieller@mellanox.com>
Date:   Wed,  6 Jan 2021 15:10:03 +0200
From:   Danielle Ratson <danieller@...lanox.com>
To:     netdev@...r.kernel.org
Cc:     mkubecek@...e.cz, f.fainelli@...il.com, kuba@...nel.org,
        andrew@...n.ch, mlxsw@...dia.com,
        Danielle Ratson <danieller@...lanox.com>
Subject: [PATCH ethtool 2/5] netlink: settings: Add netlink support for lanes parameter

Add support for "ethtool -s <dev> lanes N ..." for setting a specific
number of lanes.

Signed-off-by: Danielle Ratson <danieller@...lanox.com>
Reviewed-by: Jiri Pirko <jiri@...dia.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[] = {
 		.nlfunc	= nl_sset,
 		.help	= "Change generic options",
 		.xhelp	= "		[ 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;
 };
 
@@ -1067,6 +1068,13 @@ static const struct param_parser sset_params[] = {
 		.handler	= nl_parse_direct_u32,
 		.min_argc	= 1,
 	},
+	{
+		.arg		= "lanes",
+		.group		= ETHTOOL_MSG_LINKMODES_SET,
+		.type		= ETHTOOL_A_LINKMODES_LANES,
+		.handler	= nl_parse_direct_u32,
+		.min_argc	= 1,
+	},
 	{
 		.arg		= "duplex",
 		.group		= ETHTOOL_MSG_LINKMODES_SET,
-- 
2.26.2