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: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index ac414b7..f5571a5 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -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);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h
index 23e46e3..71ff03b 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h
@@ -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 {

diff --git a/include/linux/mlx5/fs.h b/include/linux/mlx5/fs.h
index 8803212..93ebc5e 100644 (file)
--- a/include/linux/mlx5/fs.h
+++ b/include/linux/mlx5/fs.h
@@ -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;