flexda_custom_construct_attr

Function

Constructs and issues hardware flow table attributes.

Syntax

int flexda_custom_construct_attr(void *ctx, const struct flexda_custom_info_t *info, struct rte_flow_attr *attr)

Parameters

Parameter	Type	Input/Output	Description
ctx	void *	Input	Pointer to the custom context. It also stores the extracted header information.
info	struct flexda_custom_info_t *	Input	Information provided by dpak-ovs for flexda-ovs to read. For details, see Table 1.
attr	struct rte_flow_attr *	Input	Address where the hardware flow table attributes are assembled. It includes the table ID and the flag that indicates whether flexda-dpdk is enabled.
Return value	int	Output	The function returns 0 upon successful execution; otherwise, it returns an error code.

**Table 1** struct flexda_custom_info_t
Attribute Type	Attribute Name	Description
uint16_t	input_port_id	Source input port of the current packet in OVS offload.
dp_packet *	pkt	Current packet in OVS offload.
rte_flow_action *	src_actions	Actions of the current software flow table in OVS offload.

Example

int flexda_custom_construct_attr(void *ctx, flexda_custom_info_t info, struct rte_flow_attr *attr)
{
    struct custom_packet_ctx *custom_ctx = (struct custom_packet_ctx *)ctx;
    // Assign the Hydra table enumeration value to the group value of attr based on the custom context to specify the target table.
    if (custom_ctx->vlan_poped == 1) {
        attr->group = HYDRA_TABLE_MYMAINPIPE_VLAN_EXACT;
    }
    return 0;
}

Parent topic: Hook Functions