[PATCH v2 1/2] ethdev: remove unnecessary type conversion

[Morten Brørup]

> From: Sunil Kumar Kori <skori at marvell.com>
> Sent: Monday, 12 May 2025 17.07
> 
> As rte_eth_rx_queue_count() returns signed value to represent
> the error cases but internally invoked callback is returning
> unsigned value. Hence unnecessary type conversion is done.
> 
> To avoid this typecasting from signed to unsigned, fixed
> return type of callback functions.
> 
> Signed-off-by: Sunil Kumar Kori <skori at marvell.com>

Note for other reviewers:
The tx_queue_count callback already returns int, and doesn't need to be updated.

Acked-by: Morten Brørup <mb at smartsharesystems.com>

> diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
> index ea7f8c4a1a..b3031ab9e6 100644
> --- a/lib/ethdev/rte_ethdev.h
> +++ b/lib/ethdev/rte_ethdev.h
> @@ -6401,7 +6401,7 @@ rte_eth_rx_queue_count(uint16_t port_id, uint16_t
> queue_id)
> 
>  	if (p->rx_queue_count == NULL)
>  		return -ENOTSUP;
> -	return (int)p->rx_queue_count(qd);
> +	return p->rx_queue_count(qd);
>  }
> 
>  /**@{@name Rx hardware descriptor states
> diff --git a/lib/ethdev/rte_ethdev_core.h
> b/lib/ethdev/rte_ethdev_core.h
> index e55fb42996..4ffae4921a 100644
> --- a/lib/ethdev/rte_ethdev_core.h
> +++ b/lib/ethdev/rte_ethdev_core.h
> @@ -45,7 +45,7 @@ typedef uint16_t (*eth_tx_prep_t)(void *txq,
> 
> 
>  /** @internal Get number of used descriptors on a receive queue. */
> -typedef uint32_t (*eth_rx_queue_count_t)(void *rxq);
> +typedef int (*eth_rx_queue_count_t)(void *rxq);
> 
>  /** @internal Check the status of a Rx descriptor */
>  typedef int (*eth_rx_descriptor_status_t)(void *rxq, uint16_t offset);
> --
> 2.43.0

For the ethdev library changes:
Reviewed-by: Morten Brørup <mb at smartsharesystems.com>