From: Adi Nissim Date: Sun, 1 Apr 2018 13:54:27 +0000 (+0300) Subject: net/mlx5e: Support configurable MTU for vport representors X-Git-Tag: microblaze-v4.18-rc3~56^2~79^2~11 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=250a42b6a764;p=linux-2.6-microblaze.git net/mlx5e: Support configurable MTU for vport representors The representor MTU was hard coded to 1500 bytes. Allow setting arbitrary MTU values up to the max supported by the FW. Signed-off-by: Adi Nissim Reviewed-by: Or Gerlitz Signed-off-by: Saeed Mahameed --- diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index 372cdf8a496c..a23fa47fbbcc 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -1102,6 +1102,10 @@ void mlx5e_update_stats_work(struct work_struct *work); int mlx5e_bits_invert(unsigned long a, int size); +typedef int (*change_hw_mtu_cb)(struct mlx5e_priv *priv); +int mlx5e_change_mtu(struct net_device *netdev, int new_mtu, + change_hw_mtu_cb set_mtu_cb); + /* ethtool helpers */ void mlx5e_ethtool_get_drvinfo(struct mlx5e_priv *priv, struct ethtool_drvinfo *drvinfo); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index dd119bad102d..ab7b2a4e6edc 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -3495,7 +3495,8 @@ static netdev_features_t mlx5e_fix_features(struct net_device *netdev, return features; } -static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu) +int mlx5e_change_mtu(struct net_device *netdev, int new_mtu, + change_hw_mtu_cb set_mtu_cb) { struct mlx5e_priv *priv = netdev_priv(netdev); struct mlx5e_channels new_channels = {}; @@ -3522,7 +3523,7 @@ static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu) if (!reset) { params->sw_mtu = new_mtu; - mlx5e_set_dev_port_mtu(priv); + set_mtu_cb(priv); netdev->mtu = params->sw_mtu; goto out; } @@ -3531,7 +3532,7 @@ static int mlx5e_change_mtu(struct net_device *netdev, int new_mtu) if (err) goto out; - mlx5e_switch_priv_channels(priv, &new_channels, mlx5e_set_dev_port_mtu); + mlx5e_switch_priv_channels(priv, &new_channels, set_mtu_cb); netdev->mtu = new_channels.params.sw_mtu; out: @@ -3539,6 +3540,11 @@ out: return err; } +static int mlx5e_change_nic_mtu(struct net_device *netdev, int new_mtu) +{ + return mlx5e_change_mtu(netdev, new_mtu, mlx5e_set_dev_port_mtu); +} + int mlx5e_hwstamp_set(struct mlx5e_priv *priv, struct ifreq *ifr) { struct hwtstamp_config config; @@ -4033,7 +4039,7 @@ static const struct net_device_ops mlx5e_netdev_ops = { .ndo_vlan_rx_kill_vid = mlx5e_vlan_rx_kill_vid, .ndo_set_features = mlx5e_set_features, .ndo_fix_features = mlx5e_fix_features, - .ndo_change_mtu = mlx5e_change_mtu, + .ndo_change_mtu = mlx5e_change_nic_mtu, .ndo_do_ioctl = mlx5e_ioctl, .ndo_set_tx_maxrate = mlx5e_set_tx_maxrate, .ndo_udp_tunnel_add = mlx5e_add_vxlan_port, diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c index 1fb4835eac72..8ab4c96b7f7c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -900,6 +900,11 @@ static const struct switchdev_ops mlx5e_rep_switchdev_ops = { .switchdev_port_attr_get = mlx5e_attr_get, }; +int mlx5e_change_rep_mtu(struct net_device *netdev, int new_mtu) +{ + return mlx5e_change_mtu(netdev, new_mtu, NULL); +} + static const struct net_device_ops mlx5e_netdev_ops_rep = { .ndo_open = mlx5e_rep_open, .ndo_stop = mlx5e_rep_close, @@ -909,6 +914,7 @@ static const struct net_device_ops mlx5e_netdev_ops_rep = { .ndo_get_stats64 = mlx5e_rep_get_stats, .ndo_has_offload_stats = mlx5e_has_offload_stats, .ndo_get_offload_stats = mlx5e_get_offload_stats, + .ndo_change_mtu = mlx5e_change_rep_mtu, }; static void mlx5e_build_rep_params(struct mlx5_core_dev *mdev, @@ -935,6 +941,10 @@ static void mlx5e_build_rep_params(struct mlx5_core_dev *mdev, static void mlx5e_build_rep_netdev(struct net_device *netdev) { + struct mlx5e_priv *priv = netdev_priv(netdev); + struct mlx5_core_dev *mdev = priv->mdev; + u16 max_mtu; + netdev->netdev_ops = &mlx5e_netdev_ops_rep; netdev->watchdog_timeo = 15 * HZ; @@ -947,6 +957,10 @@ static void mlx5e_build_rep_netdev(struct net_device *netdev) netdev->hw_features |= NETIF_F_HW_TC; eth_hw_addr_random(netdev); + + netdev->min_mtu = ETH_MIN_MTU; + mlx5_query_port_max_mtu(mdev, &max_mtu, 1); + netdev->max_mtu = MLX5E_HW2SW_MTU(&priv->channels.params, max_mtu); } static void mlx5e_init_rep(struct mlx5_core_dev *mdev,