diff options
| author | Tariq Toukan <tariqt@nvidia.com> | 2025-11-30 12:13:37 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-12-02 15:20:41 +0100 |
| commit | d4aa0cc9bd31f3e0cd5f067d649bf39135e4b46b (patch) | |
| tree | b660d30096e400531bcbd717ac9532e9f263063e /drivers | |
| parent | 96a8395061358adcd4b6a4f0f4c8989ec69e8659 (diff) | |
| download | linux-d4aa0cc9bd31f3e0cd5f067d649bf39135e4b46b.tar.gz | |
net/mlx5e: Support XDP target xmit with dummy program
Save per-channel resources in default, in device and host memory.
As no better API exist, make the XDP-redirect-target SQ available by
loading a dummy XDP program.
This improves the latency of interface up/down operations when feature
is disabled.
Perf numbers:
NIC: Connect-X7.
Setup: 248 channels, default mtu and rx/tx ring sizes.
Interface up + down:
Before: 2.246 secs
After: 1.798 secs (-0.448 sec)
Saves ~1.8 msec per channel.
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: William Tu <witu@nvidia.com>
Link: https://patch.msgid.link/1764497617-1326331-3-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index f0f2bc7f317df6..6168f081441483 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -2612,7 +2612,7 @@ static int mlx5e_open_queues(struct mlx5e_channel *c, if (err) goto err_close_icosq_cq; - if (netdev_ops->ndo_xdp_xmit) { + if (netdev_ops->ndo_xdp_xmit && c->xdp) { c->xdpsq = mlx5e_open_xdpredirect_sq(c, params, cparam, &ccp); if (IS_ERR(c->xdpsq)) { err = PTR_ERR(c->xdpsq); @@ -4415,19 +4415,18 @@ void mlx5e_set_xdp_feature(struct mlx5e_priv *priv) { struct mlx5e_params *params = &priv->channels.params; struct net_device *netdev = priv->netdev; - xdp_features_t val; + xdp_features_t val = 0; - if (!netdev->netdev_ops->ndo_bpf || - params->packet_merge.type != MLX5E_PACKET_MERGE_NONE) { - xdp_set_features_flag_locked(netdev, 0); - return; - } + if (netdev->netdev_ops->ndo_bpf && + params->packet_merge.type == MLX5E_PACKET_MERGE_NONE) + val = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | + NETDEV_XDP_ACT_XSK_ZEROCOPY | + NETDEV_XDP_ACT_RX_SG; + + if (netdev->netdev_ops->ndo_xdp_xmit && params->xdp_prog) + val |= NETDEV_XDP_ACT_NDO_XMIT | + NETDEV_XDP_ACT_NDO_XMIT_SG; - val = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | - NETDEV_XDP_ACT_XSK_ZEROCOPY | - NETDEV_XDP_ACT_RX_SG | - NETDEV_XDP_ACT_NDO_XMIT | - NETDEV_XDP_ACT_NDO_XMIT_SG; xdp_set_features_flag_locked(netdev, val); } |