[dpdk-dev] [PATCH v2] eventdev: change Rx adapter callback and stats structure

[Jerin Jacob Kollanukkaran]

> -----Original Message-----
> From: Nikhil Rao <nikhil.rao at intel.com>
> Sent: Friday, June 14, 2019 4:58 AM
> To: Jerin Jacob Kollanukkaran <jerinj at marvell.com>
> Cc: nikhil.rao at intel.com; dev at dpdk.org
> Subject: [EXT] [PATCH v2] eventdev: change Rx adapter callback and stats
> structure
> 
> ----------------------------------------------------------------------
> Replace the mbuf pointer array in the event eth Rx adapter callback with an
> event array. Using an event array allows the application to change attributes
> of the events enqueued by the SW adapter.
> 
> The callback can drop packets and populate a callback argument with the
> number of dropped packets. Add a Rx adapter stats field to keep track of the
> total number of dropped packets.
> 
> Signed-off-by: Nikhil Rao <nikhil.rao at intel.com>
> ---
>  lib/librte_eventdev/rte_event_eth_rx_adapter.h | 82 +++++++++++++-----
> --------  lib/librte_eventdev/rte_event_eth_rx_adapter.c | 39 +++++++-----
>  MAINTAINERS                                    |  2 +-
>  doc/guides/rel_notes/release_19_08.rst         | 13 +++-
>  lib/librte_eventdev/Makefile                   |  2 +-

1) Update version =  7 in lib/librte_eventdev/meson.build
2) remove the following
lib/librte_eventdev/Makefile:CFLAGS += -DALLOW_EXPERIMENTAL_API
lib/librte_eventdev/meson.build:allow_experimental_apis = true

3)  Update the "git comment and release notes"  to express the fact that experimental
Status has been removed.
See following change set for reference.

commit 60df5711972e97d81cbfb811c9246f87cc69409a
Author: Harry van Haaren <harry.van.haaren at intel.com>
Date:   Thu Apr 5 14:15:46 2018 +0100

    service: remove experimental tags


>  lib/librte_eventdev/rte_eventdev_version.map   |  4 +-
>  6 files changed, 80 insertions(+), 62 deletions(-)
> 
> v1:
> * add implementation to RFC
> 
> v2:
> * Bump library version
> * Combine patch 1 & 2 into a single patch (single library version bump)
> * Mention API change in release notes
> * Remove __rte_experimental tag
> * Remove EXPERIMENTAL status for eventdev
> 
> @@ -819,6 +806,26 @@ static uint16_t rxa_gcd_u16(uint16_t a, uint16_t b)
>  		ev++;
>  	}
> 
> +	if (dev_info->cb_fn) {
> +
> +		dropped = 0;
> +		nb_cb = dev_info->cb_fn(eth_dev_id,
> +					rx_queue_id,
> +					ETH_EVENT_BUFFER_SIZE,
> +					buf->count,
> +					ev,
> +					num,
> +					dev_info->cb_arg,
> +					&dropped);

I think, the above variables can squash to 80 characters limit to reduce the lines.

Other than, Above nits, The patch looks good to me.