In order to let the bonding driver report the correct speed
of the underlaying interfaces, when they are IPoIB, the ethtool
function get_settings() in the IPoIB driver is implemented.
Cc: Joe Jin <joe.jin@xxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Reviewed-by: Håkon Bugge <haakon.bugge@xxxxxxxxxx>
Reviewed-by: Yuval Shaia <yuval.shaia@xxxxxxxxxx>
Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxxx>
---
drivers/infiniband/ulp/ipoib/ipoib_ethtool.c | 50 ++++++++++++++++++++++++++++
include/uapi/linux/ethtool.h | 1 +
2 files changed, 51 insertions(+)
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
index bac455a..7ebe52a 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
@@ -155,7 +155,57 @@ static int ipoib_get_sset_count(struct net_device __always_unused *dev,
return -EOPNOTSUPP;
}
+/* Return lane speed in unit of 1e6 bit/sec */
+static inline int ib_speed_enum_to_int(int speed)
+{
+ switch (speed) {
+ case IB_SPEED_SDR:
+ return SPEED_2500;
+ case IB_SPEED_DDR:
+ return SPEED_5000;
+ case IB_SPEED_QDR:
+ case IB_SPEED_FDR10:
+ return SPEED_10000;
+ case IB_SPEED_FDR:
+ return SPEED_14000;
+ case IB_SPEED_EDR:
+ return SPEED_25000;
+ }
+
+ return SPEED_UNKNOWN;
+}
+
+static int ipoib_get_settings(struct net_device *netdev,
+ struct ethtool_cmd *ecmd)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(netdev);
+ struct ib_port_attr attr;
+ int ret, speed, width;
+
+ if (!netif_carrier_ok(netdev)) {
+ ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
+ ecmd->duplex = DUPLEX_UNKNOWN;
+ return 0;
+ }
+
+ ret = ib_query_port(priv->ca, priv->port, &attr);
+ if (ret < 0)
+ return -EINVAL;
+
+ speed = ib_speed_enum_to_int(attr.active_speed);
+ width = ib_width_enum_to_int(attr.active_width);
+
+ if (speed < 0 || width < 0)
+ return -EINVAL;
+
+ ethtool_cmd_speed_set(ecmd, speed * width);
+ ecmd->duplex = DUPLEX_FULL;
+
+ return 0;
+}
+
static const struct ethtool_ops ipoib_ethtool_ops = {
+ .get_settings = ipoib_get_settings,
.get_drvinfo = ipoib_get_drvinfo,
.get_coalesce = ipoib_get_coalesce,
.set_coalesce = ipoib_set_coalesce,
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 3dc91a4..55c3dcd 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -1493,6 +1493,7 @@ enum ethtool_link_mode_bit_indices {
#define SPEED_2500 2500
#define SPEED_5000 5000
#define SPEED_10000 10000
+#define SPEED_14000 14000
#define SPEED_20000 20000
#define SPEED_25000 25000
#define SPEED_40000 40000
--
2.7.4
--
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