drivers/net/ethernet/mellanox/mlx4/en_resources.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/mellanox/mlx4/en_resources.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/mellanox/mlx4/en_resources.c
Extension
.c
Size
4213 bytes
Lines
116
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

MLX4_SINK_COUNTER_INDEX(mdev->dev)) {
		/* disable multicast loopback to qp with same counter */
		if (!(dev->features & NETIF_F_LOOPBACK))
			context->pri_path.fl |= MLX4_FL_ETH_SRC_CHECK_MC_LB;
		context->pri_path.control |= MLX4_CTRL_ETH_SRC_CHECK_IF_COUNTER;
	}
	context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
	if (!(dev->features & NETIF_F_HW_VLAN_CTAG_RX))
		context->param3 |= cpu_to_be32(1 << 30);

	if (!is_tx && !rss &&
	    (mdev->dev->caps.tunnel_offload_mode ==  MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)) {
		en_dbg(HW, priv, "Setting RX qp %x tunnel mode to RX tunneled & non-tunneled\n", qpn);
		context->srqn = cpu_to_be32(7 << 28); /* this fills bits 30:28 */
	}
}

int mlx4_en_change_mcast_lb(struct mlx4_en_priv *priv, struct mlx4_qp *qp,
			    int loopback)
{
	int ret;
	struct mlx4_update_qp_params qp_params;

	memset(&qp_params, 0, sizeof(qp_params));
	if (!loopback)
		qp_params.flags = MLX4_UPDATE_QP_PARAMS_FLAGS_ETH_CHECK_MC_LB;

	ret = mlx4_update_qp(priv->mdev->dev, qp->qpn,
			     MLX4_UPDATE_QP_ETH_SRC_CHECK_MC_LB,
			     &qp_params);

	return ret;
}

void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
{
    return;
}

Annotation

Implementation Notes