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Commit f360d88a authored by Eli Cohen's avatar Eli Cohen Committed by Roland Dreier
Browse files

IB/mlx5: Add block multicast loopback support 



Add support for the block multicast loopback QP creation flag along
the proper firmware API for that.

Signed-off-by: default avatarEli Cohen <eli@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent 877f075a

drivers/infiniband/hw/mlx5/main.c

+2 −0
Original line number Diff line number Diff line
@@ -282,6 +282,8 @@ static int mlx5_ib_query_device(struct ib_device *ibdev, 
		props->sig_guard_cap = IB_GUARD_T10DIF_CRC |

				       IB_GUARD_T10DIF_CSUM;

	}

	if (flags & MLX5_DEV_CAP_FLAG_BLOCK_MCAST)

		props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;



	props->vendor_id	   = be32_to_cpup((__be32 *)(out_mad->data + 36)) &

		0xffffff;

drivers/infiniband/hw/mlx5/qp.c

+12 −0
Original line number Diff line number Diff line
@@ -807,6 +807,15 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd, 
	spin_lock_init(&qp->sq.lock);

	spin_lock_init(&qp->rq.lock);



	if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {

		if (!(dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_BLOCK_MCAST)) {

			mlx5_ib_dbg(dev, "block multicast loopback isn't supported\n");

			return -EINVAL;

		} else {

			qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK;

		}

	}



	if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)

		qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
@@ -878,6 +887,9 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd, 
	if (qp->wq_sig)

		in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_ENABLE_SIG);



	if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)

		in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_BLOCK_MCAST);



	if (qp->scat_cqe && is_connected(init_attr->qp_type)) {

		int rcqe_sz;

		int scqe_sz;

include/linux/mlx5/device.h

+1 −0
Original line number Diff line number Diff line
@@ -179,6 +179,7 @@ enum { 
	MLX5_DEV_CAP_FLAG_BAD_QKEY_CNTR	= 1LL <<  9,

	MLX5_DEV_CAP_FLAG_APM		= 1LL << 17,

	MLX5_DEV_CAP_FLAG_ATOMIC	= 1LL << 18,

	MLX5_DEV_CAP_FLAG_BLOCK_MCAST	= 1LL << 23,

	MLX5_DEV_CAP_FLAG_ON_DMND_PG	= 1LL << 24,

	MLX5_DEV_CAP_FLAG_CQ_MODER	= 1LL << 29,

	MLX5_DEV_CAP_FLAG_RESIZE_CQ	= 1LL << 30,

include/linux/mlx5/qp.h

+1 −0
Original line number Diff line number Diff line
@@ -146,6 +146,7 @@ enum { 


enum {

	MLX5_QP_LAT_SENSITIVE	= 1 << 28,

	MLX5_QP_BLOCK_MCAST	= 1 << 30,

	MLX5_QP_ENABLE_SIG	= 1 << 31,

};