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net/mlx5e: take into account device reconfiguration for xdp_features flag

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Take into account LRO and GRO configuration setting device xdp_features
flag. Consider channel rq_wq_type enabling rx scatter-gatter support in
xdp_features flag and disable NETDEV_XDP_ACT_NDO_XMIT_SG since it is not
supported yet by the driver.
Moreover always enable NETDEV_XDP_ACT_NDO_XMIT as the ndo_xdp_xmit
callback does not require to load a dummy xdp program on the NIC.

Fixes: 66c0e13ad2 ("drivers: net: turn on XDP features")
Co-developed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2023-03-09 13:25:31 +01:00 • committed by Jakub Kicinski
parent fccca038f3
commit 4d5ab0ad96
4 changed files with 39 additions and 12 deletions
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1
drivers/net/ethernet/mellanox/mlx5/core/en.h
View file

@ -1243,6 +1243,7 @@ void mlx5e_build_nic_params(struct mlx5e_priv *priv, struct mlx5e_xsk *xsk, u16
void mlx5e_rx_dim_work(struct work_struct *work);
void mlx5e_tx_dim_work(struct work_struct *work);
void mlx5e_set_xdp_feature(struct net_device *netdev);
netdev_features_t mlx5e_features_check(struct sk_buff *skb,
struct net_device *netdev,
netdev_features_t features);

10
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View file

@ -1985,6 +1985,7 @@ static int set_pflag_rx_striding_rq(struct net_device *netdev, bool enable)
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_params new_params;
int err;
if (enable) {
/* Checking the regular RQ here; mlx5e_validate_xsk_param called
@ -2005,7 +2006,14 @@ static int set_pflag_rx_striding_rq(struct net_device *netdev, bool enable)
MLX5E_SET_PFLAG(&new_params, MLX5E_PFLAG_RX_STRIDING_RQ, enable);
mlx5e_set_rq_type(mdev, &new_params);
return mlx5e_safe_switch_params(priv, &new_params, NULL, NULL, true);
err = mlx5e_safe_switch_params(priv, &new_params, NULL, NULL, true);
if (err)
return err;
/* update XDP supported features */
mlx5e_set_xdp_feature(netdev);
return 0;
}
static int set_pflag_rx_no_csum_complete(struct net_device *netdev, bool enable)

37
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View file

@ -4004,6 +4004,25 @@ static int mlx5e_handle_feature(struct net_device *netdev,
return 0;
}
void mlx5e_set_xdp_feature(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5e_params *params = &priv->channels.params;
xdp_features_t val;
if (params->packet_merge.type != MLX5E_PACKET_MERGE_NONE) {
xdp_clear_features_flag(netdev);
return;
}
val = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
NETDEV_XDP_ACT_XSK_ZEROCOPY |
NETDEV_XDP_ACT_NDO_XMIT;
if (params->rq_wq_type == MLX5_WQ_TYPE_CYCLIC)
val |= NETDEV_XDP_ACT_RX_SG;
xdp_set_features_flag(netdev, val);
}
int mlx5e_set_features(struct net_device *netdev, netdev_features_t features)
{
netdev_features_t oper_features = features;
@ -4030,6 +4049,9 @@ int mlx5e_set_features(struct net_device *netdev, netdev_features_t features)
return -EINVAL;
}
/* update XDP supported features */
mlx5e_set_xdp_feature(netdev);
return 0;
}
@ -4761,13 +4783,6 @@ static int mlx5e_xdp_set(struct net_device *netdev, struct bpf_prog *prog)
if (old_prog)
bpf_prog_put(old_prog);
if (reset) {
if (prog)
xdp_features_set_redirect_target(netdev, true);
else
xdp_features_clear_redirect_target(netdev);
}
if (!test_bit(MLX5E_STATE_OPENED, &priv->state) || reset)
goto unlock;
@ -5163,13 +5178,10 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
netdev->features |= NETIF_F_HIGHDMA;
netdev->features |= NETIF_F_HW_VLAN_STAG_FILTER;
netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
NETDEV_XDP_ACT_XSK_ZEROCOPY |
NETDEV_XDP_ACT_RX_SG;
netdev->priv_flags |= IFF_UNICAST_FLT;
netif_set_tso_max_size(netdev, GSO_MAX_SIZE);
mlx5e_set_xdp_feature(netdev);
mlx5e_set_netdev_dev_addr(netdev);
mlx5e_macsec_build_netdev(priv);
mlx5e_ipsec_build_netdev(priv);
@ -5241,6 +5253,9 @@ static int mlx5e_nic_init(struct mlx5_core_dev *mdev,
mlx5_core_err(mdev, "TLS initialization failed, %d\n", err);
mlx5e_health_create_reporters(priv);
/* update XDP supported features */
mlx5e_set_xdp_feature(netdev);
return 0;
}

3
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
View file

@ -747,6 +747,9 @@ static void mlx5e_build_rep_params(struct net_device *netdev)
/* RQ */
mlx5e_build_rq_params(mdev, params);
/* update XDP supported features */
mlx5e_set_xdp_feature(netdev);
/* CQ moderation params */
params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
mlx5e_set_rx_cq_mode_params(params, cq_period_mode);