2. EL 7
  3. rdma-core-devel
  4. mlx5dv_create_flow_matcher(3)

Scroll to navigation

mlx5dv_create_flow_matcher(3) mlx5 Programmer's Manual mlx5dv_create_flow_matcher(3)

NAME

mlx5dv_create_flow_matcher - creates a matcher to be used with mlx5dv_create_flow(3)

SYNOPSIS

#include <infiniband/mlx5dv.h>
struct mlx5dv_flow_matcher *
mlx5dv_create_flow_matcher(struct ibv_context *context,
               struct mlx5dv_flow_matcher_attr *attr)

DESCRIPTION

mlx5dv_create_flow_matcher() creates a flow matcher (mask) to be used with mlx5dv_create_flow(3).

ARGUMENTS

Please see ibv_open_device(3) for context.

attr

struct mlx5dv_flow_matcher_attr {
    enum ibv_flow_attr_type type;
    uint32_t flags; /* From enum ibv_flow_flags */
    uint16_t priority;
    uint8_t match_criteria_enable; /* Device spec format */
    struct mlx5dv_flow_match_parameters *match_mask;
    uint64_t comp_mask;
};
Type of matcher to be created: IBV_FLOW_ATTR_NORMAL: Normal rule according to specification.
special flags to control rule: 0: Nothing or zero value means matcher will store ingress flow rules. IBV_FLOW_ATTR_FLAGS_EGRESS: Specified this matcher will store egress flow rules.
See ibv_create_flow(3).
What match criteria is configured in match_mask, passed in device spec format.

match_mask

struct mlx5dv_flow_match_parameters {
    size_t match_sz;
    uint64_t match_buf[]; /* Device spec format */
};
Size in bytes of match_buf.
Set which mask to be used, passed in device spec format.

RETURN VALUE

mlx5dv_create_flow_matcher returns a pointer to mlx5dv_flow_matcher, on error NULL will be returned and errno will be set.

SEE ALSO

ibv_open_device(3), ibv_create_flow(3)

AUTHOR

Mark Bloch <markb@mellanox.com>

2018-9-19 mlx5