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Commit 87d22483 authored by Maor Gottlieb's avatar Maor Gottlieb Committed by Leon Romanovsky
Browse files

net/mlx5: Add sniffer namespaces 



Add sniffer TX and RX namespaces to receive ingoing and outgoing
traffic.

Each outgoing/incoming packet is duplicated and steered to the sniffer
TX/RX namespace in addition to the regular flow.

Signed-off-by: default avatarMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent cea824d4

drivers/net/ethernet/mellanox/mlx5/core/fs_core.c

+58 −0
Original line number Diff line number Diff line
@@ -1427,6 +1427,16 @@ struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev, 
			return &steering->esw_ingress_root_ns->ns;

		else

			return NULL;

	case MLX5_FLOW_NAMESPACE_SNIFFER_RX:

		if (steering->sniffer_rx_root_ns)

			return &steering->sniffer_rx_root_ns->ns;

		else

			return NULL;

	case MLX5_FLOW_NAMESPACE_SNIFFER_TX:

		if (steering->sniffer_tx_root_ns)

			return &steering->sniffer_tx_root_ns->ns;

		else

			return NULL;

	default:

		return NULL;

	}
@@ -1726,10 +1736,46 @@ void mlx5_cleanup_fs(struct mlx5_core_dev *dev) 
	cleanup_root_ns(steering->esw_egress_root_ns);

	cleanup_root_ns(steering->esw_ingress_root_ns);

	cleanup_root_ns(steering->fdb_root_ns);

	cleanup_root_ns(steering->sniffer_rx_root_ns);

	cleanup_root_ns(steering->sniffer_tx_root_ns);

	mlx5_cleanup_fc_stats(dev);

	kfree(steering);

}



static int init_sniffer_tx_root_ns(struct mlx5_flow_steering *steering)

{

	struct fs_prio *prio;



	steering->sniffer_tx_root_ns = create_root_ns(steering, FS_FT_SNIFFER_TX);

	if (!steering->sniffer_tx_root_ns)

		return -ENOMEM;



	/* Create single prio */

	prio = fs_create_prio(&steering->sniffer_tx_root_ns->ns, 0, 1);

	if (IS_ERR(prio)) {

		cleanup_root_ns(steering->sniffer_tx_root_ns);

		return PTR_ERR(prio);

	}

	return 0;

}



static int init_sniffer_rx_root_ns(struct mlx5_flow_steering *steering)

{

	struct fs_prio *prio;



	steering->sniffer_rx_root_ns = create_root_ns(steering, FS_FT_SNIFFER_RX);

	if (!steering->sniffer_rx_root_ns)

		return -ENOMEM;



	/* Create single prio */

	prio = fs_create_prio(&steering->sniffer_rx_root_ns->ns, 0, 1);

	if (IS_ERR(prio)) {

		cleanup_root_ns(steering->sniffer_rx_root_ns);

		return PTR_ERR(prio);

	}

	return 0;

}



static int init_fdb_root_ns(struct mlx5_flow_steering *steering)

{

	struct fs_prio *prio;
@@ -1826,6 +1872,18 @@ int mlx5_init_fs(struct mlx5_core_dev *dev) 
		}

	}



	if (MLX5_CAP_FLOWTABLE_SNIFFER_RX(dev, ft_support)) {

		err = init_sniffer_rx_root_ns(steering);

		if (err)

			goto err;

	}



	if (MLX5_CAP_FLOWTABLE_SNIFFER_TX(dev, ft_support)) {

		err = init_sniffer_tx_root_ns(steering);

		if (err)

			goto err;

	}



	return 0;

err:

	mlx5_cleanup_fs(dev);

drivers/net/ethernet/mellanox/mlx5/core/fs_core.h

+4 −0
Original line number Diff line number Diff line
@@ -49,6 +49,8 @@ enum fs_flow_table_type { 
	FS_FT_ESW_EGRESS_ACL  = 0x2,

	FS_FT_ESW_INGRESS_ACL = 0x3,

	FS_FT_FDB             = 0X4,

	FS_FT_SNIFFER_RX	= 0X5,

	FS_FT_SNIFFER_TX	= 0X6,

};



enum fs_flow_table_op_mod {
@@ -66,6 +68,8 @@ struct mlx5_flow_steering { 
	struct mlx5_flow_root_namespace *fdb_root_ns;

	struct mlx5_flow_root_namespace *esw_egress_root_ns;

	struct mlx5_flow_root_namespace *esw_ingress_root_ns;

	struct mlx5_flow_root_namespace	*sniffer_tx_root_ns;

	struct mlx5_flow_root_namespace	*sniffer_rx_root_ns;

};



struct fs_node {

include/linux/mlx5/fs.h

+2 −0
Original line number Diff line number Diff line
@@ -63,6 +63,8 @@ enum mlx5_flow_namespace_type { 
	MLX5_FLOW_NAMESPACE_FDB,

	MLX5_FLOW_NAMESPACE_ESW_EGRESS,

	MLX5_FLOW_NAMESPACE_ESW_INGRESS,

	MLX5_FLOW_NAMESPACE_SNIFFER_RX,

	MLX5_FLOW_NAMESPACE_SNIFFER_TX,

};



struct mlx5_flow_table;