net/mlx4_en: Enable TX rate limit per VF
Support granular QoS per VF, by implementing the ndo_set_vf_rate.
Enforce a rate limit per VF when called, and enabled only for VFs in
VST mode with user priority supported by the device.
We don't enforce VFs to be in VST mode at the moment of configuration,
but rather save the given rate limit and enforce it when the VF is
moved to VST with user priority which is supported (currently 0).
VST<->VGT or VST qos value state changes are disallowed when a rate
limit is configured. Minimum BW share is not supported yet.
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index d73ab1b..2a5df0a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2240,6 +2240,16 @@
return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
}
+static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
+ int max_tx_rate)
+{
+ struct mlx4_en_priv *en_priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = en_priv->mdev;
+
+ return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
+ max_tx_rate);
+}
+
static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
{
struct mlx4_en_priv *en_priv = netdev_priv(dev);
@@ -2458,6 +2468,7 @@
.ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid,
.ndo_set_vf_mac = mlx4_en_set_vf_mac,
.ndo_set_vf_vlan = mlx4_en_set_vf_vlan,
+ .ndo_set_vf_rate = mlx4_en_set_vf_rate,
.ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
.ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
.ndo_get_vf_config = mlx4_en_get_vf_config,