Commit 5f418378 authored by Aviad Yehezkel's avatar Aviad Yehezkel Committed by Saeed Mahameed
Browse files

net/mlx5: Add empty egress namespace to flow steering core 



Currently, we don't support egress flow steering namespace in mlx5
flow steering core implementation. However, when we want to encrypt
a packet, we model it as a flow steering rule in the egress path.
To overcome this, we add an empty egress namespace to flow steering.
This namespace is initialized only when ipsec support exists.
In the future, this will grow to a full blown full steering
implementation, resembling the ingress path.

Signed-off-by: default avatarMatan Barak <matanb@mellanox.com>
Signed-off-by: default avatarAviad Yehezkel <aviadye@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
parent af76c501

drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c

+3 −0
Original line number Diff line number Diff line
@@ -246,6 +246,9 @@ const char *parse_fs_dst(struct trace_seq *p, 
	case MLX5_FLOW_DESTINATION_TYPE_COUNTER:

		trace_seq_printf(p, "counter_id=%u\n", counter_id);

		break;

	case MLX5_FLOW_DESTINATION_TYPE_PORT:

		trace_seq_printf(p, "port\n");

		break;

	}



	trace_seq_putc(p, 0);

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

+1 −0
Original line number Diff line number Diff line
@@ -731,6 +731,7 @@ const struct mlx5_flow_cmds *mlx5_fs_cmd_get_default(enum fs_flow_table_type typ 
	case FS_FT_SNIFFER_RX:

	case FS_FT_SNIFFER_TX:

		return mlx5_fs_cmd_get_fw_cmds();

	case FS_FT_NIC_TX:

	default:

		return mlx5_fs_cmd_get_stub_cmds();

	}

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

+28 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include "fs_core.h"

#include "fs_cmd.h"

#include "diag/fs_tracepoint.h"

#include "accel/ipsec.h"



#define INIT_TREE_NODE_ARRAY_SIZE(...)	(sizeof((struct init_tree_node[]){__VA_ARGS__}) /\

					 sizeof(struct init_tree_node))
@@ -2049,6 +2050,11 @@ struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev, 
			return &steering->sniffer_tx_root_ns->ns;

		else

			return NULL;

	case MLX5_FLOW_NAMESPACE_EGRESS:

		if (steering->egress_root_ns)

			return &steering->egress_root_ns->ns;

		else

			return NULL;

	default:

		return NULL;

	}
@@ -2413,6 +2419,7 @@ void mlx5_cleanup_fs(struct mlx5_core_dev *dev) 
	cleanup_root_ns(steering->fdb_root_ns);

	cleanup_root_ns(steering->sniffer_rx_root_ns);

	cleanup_root_ns(steering->sniffer_tx_root_ns);

	cleanup_root_ns(steering->egress_root_ns);

	mlx5_cleanup_fc_stats(dev);

	kmem_cache_destroy(steering->ftes_cache);

	kmem_cache_destroy(steering->fgs_cache);
@@ -2558,6 +2565,20 @@ cleanup_root_ns: 
	return err;

}



static int init_egress_root_ns(struct mlx5_flow_steering *steering)

{

	struct fs_prio *prio;



	steering->egress_root_ns = create_root_ns(steering,

						  FS_FT_NIC_TX);

	if (!steering->egress_root_ns)

		return -ENOMEM;



	/* create 1 prio*/

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

	return PTR_ERR_OR_ZERO(prio);

}



int mlx5_init_fs(struct mlx5_core_dev *dev)

{

	struct mlx5_flow_steering *steering;
@@ -2623,6 +2644,13 @@ int mlx5_init_fs(struct mlx5_core_dev *dev) 
			goto err;

	}



	if (mlx5_accel_ipsec_device_caps(steering->dev) &

	    MLX5_ACCEL_IPSEC_DEVICE) {

		err = init_egress_root_ns(steering);

		if (err)

			goto err;

	}



	return 0;

err:

	mlx5_cleanup_fs(dev);

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

+2 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ enum fs_node_type { 


enum fs_flow_table_type {

	FS_FT_NIC_RX          = 0x0,

	FS_FT_NIC_TX          = 0x1,

	FS_FT_ESW_EGRESS_ACL  = 0x2,

	FS_FT_ESW_INGRESS_ACL = 0x3,

	FS_FT_FDB             = 0X4,
@@ -75,6 +76,7 @@ struct mlx5_flow_steering { 
	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 mlx5_flow_root_namespace	*egress_root_ns;

};



struct fs_node {

include/linux/mlx5/fs.h

+1 −0
Original line number Diff line number Diff line
@@ -69,6 +69,7 @@ enum mlx5_flow_namespace_type { 
	MLX5_FLOW_NAMESPACE_ESW_INGRESS,

	MLX5_FLOW_NAMESPACE_SNIFFER_RX,

	MLX5_FLOW_NAMESPACE_SNIFFER_TX,

	MLX5_FLOW_NAMESPACE_EGRESS,

};



struct mlx5_flow_table;

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