[PATCH net-next v2 1/2] vxlan: implement get_link_ksettings ethtool method

From: Matthias Schiffer
Date: Tue Nov 12 2019 - 16:12:38 EST


Similar to VLAN and similar drivers, we can forward get_link_ksettings to
the lower dev if we have one to get meaningful speed/duplex data.

Signed-off-by: Matthias Schiffer <mschiffer@xxxxxxxxxxxxxxxxxxxx>
---
v2: no changes

drivers/net/vxlan.c | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 11f5776affb1..bf04bc2e68c2 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -3175,9 +3175,29 @@ static void vxlan_get_drvinfo(struct net_device *netdev,
strlcpy(drvinfo->driver, "vxlan", sizeof(drvinfo->driver));
}

+static int vxlan_get_link_ksettings(struct net_device *dev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct vxlan_dev *vxlan = netdev_priv(dev);
+ struct vxlan_rdst *dst = &vxlan->default_dst;
+ struct net_device *lowerdev = __dev_get_by_index(vxlan->net,
+ dst->remote_ifindex);
+
+ if (!lowerdev) {
+ cmd->base.duplex = DUPLEX_UNKNOWN;
+ cmd->base.port = PORT_OTHER;
+ cmd->base.speed = SPEED_UNKNOWN;
+
+ return 0;
+ }
+
+ return __ethtool_get_link_ksettings(lowerdev, cmd);
+}
+
static const struct ethtool_ops vxlan_ethtool_ops = {
- .get_drvinfo = vxlan_get_drvinfo,
- .get_link = ethtool_op_get_link,
+ .get_drvinfo = vxlan_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+ .get_link_ksettings = vxlan_get_link_ksettings,
};

static struct socket *vxlan_create_sock(struct net *net, bool ipv6,
--
2.24.0