static void qp_prepare()

in mlx5/net/mlx5_vnet.c [388:420]

• 28 lines of code
• 3 McCabe index (conditional complexity)

static void qp_prepare(struct mlx5_vdpa_net *ndev, bool fw, void *in,
		       struct mlx5_vdpa_virtqueue *mvq, u32 num_ent)
{
	struct mlx5_vdpa_qp *vqp;
	__be64 *pas;
	void *qpc;

	vqp = fw ? &mvq->fwqp : &mvq->vqqp;
	MLX5_SET(create_qp_in, in, uid, ndev->mvdev.res.uid);
	qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
	if (vqp->fw) {
		/* Firmware QP is allocated by the driver for the firmware's
		 * use so we can skip part of the params as they will be chosen by firmware
		 */
		qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
		MLX5_SET(qpc, qpc, rq_type, MLX5_ZERO_LEN_RQ);
		MLX5_SET(qpc, qpc, no_sq, 1);
		return;
	}

	MLX5_SET(qpc, qpc, st, MLX5_QP_ST_RC);
	MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
	MLX5_SET(qpc, qpc, pd, ndev->mvdev.res.pdn);
	MLX5_SET(qpc, qpc, mtu, MLX5_QPC_MTU_256_BYTES);
	MLX5_SET(qpc, qpc, uar_page, ndev->mvdev.res.uar->index);
	MLX5_SET(qpc, qpc, log_page_size, vqp->frag_buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT);
	MLX5_SET(qpc, qpc, no_sq, 1);
	MLX5_SET(qpc, qpc, cqn_rcv, mvq->cq.mcq.cqn);
	MLX5_SET(qpc, qpc, log_rq_size, ilog2(num_ent));
	MLX5_SET(qpc, qpc, rq_type, MLX5_NON_ZERO_RQ);
	pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, in, pas);
	mlx5_fill_page_frag_array(&vqp->frag_buf, pas);
}