[dpdk-dev] [PATCH 1/2] eventdev: add event adapter for ethernet Rx queues

[Rao, Nikhil]

On 8/10/2017 10:23 PM, Jerin Jacob wrote:
> -----Original Message-----
>> Date: Wed, 9 Aug 2017 19:24:30 +0000
>> From: "Eads, Gage" <gage.eads at intel.com>
>> Makes sense. Are you thinking the helper function would do stop + reconfig with additional port + start + setup port, or just setup the port with an ID the app supplies (only when a port is required, of course)? The second one could be done with little additional code -- the app just needs to check if an additional port is needed when configuring the eventdev, and another helper function could take a list of <eventdev, ethdev> pairs and return true if any don't have an inbuilt port.
> 
> I am in favor adding more logic in helper function(I believe, first one ) so that it will help
> application reuse the helper functions for the normal case.
> 

Hi Jerin,

My understanding of the discussion above is that the simple API adapter 
creation API is

int rte_event_eth_rx_adapter_create(id, eventdev_id)

And the raw API is

typedef int (*rx_adapter_conf_cb) (id, eventdev_id,
	struct rte_event_eth_rx_adapter_conf *conf, void *arg);

struct rte_event_eth_rx_adapter_conf {
	uint8_t rx_event_port_id;
	uint32_t max_nb_rx;
};

int rte_event_eth_rx_adapter_create_ext(id, eventdev_id, conf_cb,
					conf_arg)

The conf_cb is invoked if the rte_event_eth_rx_adapter_conf struct needs 
to be filled out. the _create_ext() API is used internally by 
rte_event_eth_rx_adapter_create()

Does that look OK to you ?

Nikhil