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  3. rdma-core-devel
  4. mlx5dv_create_flow(3)

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mlx5dv_create_flow(3) mlx5 Programmer’s Manual mlx5dv_create_flow(3)

NAME

mlx5dv_create_flow - creates a steering flow rule

SYNOPSIS

#include <infiniband/mlx5dv.h>
struct ibv_flow *
mlx5dv_create_flow(struct mlx5dv_flow_matcher *flow_matcher,


           struct mlx5dv_flow_match_parameters *match_value,


           size_t num_actions,


           struct mlx5dv_flow_action_attr actions_attr[])

DESCRIPTION

mlx5dv_create_flow() creates a steering flow rule with the ability to specify specific driver properties.

ARGUMENTS

Please see mlx5dv_create_flow_matcher(3) for flow_matcher and match_value.

Specifies how many actions are passed in actions_attr

actions_attr

struct mlx5dv_flow_action_attr {


    enum mlx5dv_flow_action_type type;


    union {


        struct ibv_qp *qp;


        struct ibv_counters *counter;


        struct ibv_flow_action *action;


        uint32_t tag_value;


        struct mlx5dv_devx_obj *obj;


    };
};
MLX5DV_FLOW_ACTION_DEST_IBV_QP The QP passed will receive the matched packets. MLX5DV_FLOW_ACTION_IBV_FLOW_ACTION The flow action to be applied. MLX5DV_FLOW_ACTION_TAG Flow tag to be provided in work completion. MLX5DV_FLOW_ACTION_DEST_DEVX The DEVX destination object for the matched packets. MLX5DV_FLOW_ACTION_COUNTERS_DEVX The DEVX counter object for the matched packets. MLX5DV_FLOW_ACTION_DEFAULT_MISS Steer the packet to the default miss destination. MLX5DV_FLOW_ACTION_DROP Action is dropping the matched packet.
QP passed, to be used with type MLX5DV_FLOW_ACTION_DEST_IBV_QP.
Flow action, to be used with type MLX5DV_FLOW_ACTION_IBV_FLOW_ACTION see mlx5dv_create_flow_action_modify_header(3) and mlx5dv_create_flow_action_packet_reformat(3).
tag value to be passed in the work completion, to be used with type MLX5DV_FLOW_ACTION_TAG see ibv_create_cq_ex(3).
DEVX object, to be used with type MLX5DV_FLOW_ACTION_DEST_DEVX or by MLX5DV_FLOW_ACTION_COUNTERS_DEVX.

RETURN VALUE

mlx5dv_create_flow returns a pointer to the created flow rule, on error NULL will be returned and errno will be set.

SEE ALSO

mlx5dv_create_flow_action_modify_header(3), mlx5dv_create_flow_action_packet_reformat(3), mlx5dv_create_flow_matcher(3), mlx5dv_create_qp(3), ibv_create_qp_ex(3) ibv_create_cq_ex(3) ibv_create_counters(3)

AUTHOR

Mark Bloch <marb@mellanox.com>

2018-9-19 mlx5