summaryrefslogtreecommitdiff
path: root/net/bridge
diff options
context:
space:
mode:
authorMatthias Schiffer <mschiffer@universe-factory.net>2019-11-12 22:12:25 +0100
committerDavid S. Miller <davem@davemloft.net>2019-11-12 19:52:15 -0800
commit542575fe4b9a7ad5f86da0346f147c3bae0c93cb (patch)
tree2107d0d97b31df0ad1a86c830199e309357e243c /net/bridge
parent36fe3a61aaca2be4ef7484187e7484d19d54553e (diff)
bridge: implement get_link_ksettings ethtool method
We return the maximum speed of all active ports. This matches how the link speed would give an upper limit for traffic to/from any single peer if the bridge were replaced with a hardware switch. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_device.c36
1 files changed, 34 insertions, 2 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index e804a3016902..434effde02c3 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -263,6 +263,37 @@ static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info)
strlcpy(info->bus_info, "N/A", sizeof(info->bus_info));
}
+static int br_get_link_ksettings(struct net_device *dev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct net_bridge *br = netdev_priv(dev);
+ struct net_bridge_port *p;
+
+ cmd->base.duplex = DUPLEX_UNKNOWN;
+ cmd->base.port = PORT_OTHER;
+ cmd->base.speed = SPEED_UNKNOWN;
+
+ list_for_each_entry(p, &br->port_list, list) {
+ struct ethtool_link_ksettings ecmd;
+ struct net_device *pdev = p->dev;
+
+ if (!netif_running(pdev) || !netif_oper_up(pdev))
+ continue;
+
+ if (__ethtool_get_link_ksettings(pdev, &ecmd))
+ continue;
+
+ if (ecmd.base.speed == (__u32)SPEED_UNKNOWN)
+ continue;
+
+ if (cmd->base.speed == (__u32)SPEED_UNKNOWN ||
+ cmd->base.speed < ecmd.base.speed)
+ cmd->base.speed = ecmd.base.speed;
+ }
+
+ return 0;
+}
+
static netdev_features_t br_fix_features(struct net_device *dev,
netdev_features_t features)
{
@@ -365,8 +396,9 @@ static int br_del_slave(struct net_device *dev, struct net_device *slave_dev)
}
static const struct ethtool_ops br_ethtool_ops = {
- .get_drvinfo = br_getinfo,
- .get_link = ethtool_op_get_link,
+ .get_drvinfo = br_getinfo,
+ .get_link = ethtool_op_get_link,
+ .get_link_ksettings = br_get_link_ksettings,
};
static const struct net_device_ops br_netdev_ops = {