Re: [PATCH net v2] bnge/bng_re: fix ring ID widths

[Przemek Kitszel <przemyslaw.kitszel@intel.com>]

On 7/4/26 18:47, Vikas Gupta wrote:
> Firmware requires more than 16 bits to address TX ring IDs for its
> internal QP management. Widen the associated HSI ring ID fields to
> 32 bits. The values firmware assigns remain within 24 bits, bounded
> by the hardware doorbell XID field.
> 
> RX, completion, and NQ ring IDs are unaffected and remain 16-bit.

Here you mention Rx is unaffected. But you touch multiple places that
are Rx specific (some comments below).

[..]

> --- a/drivers/net/ethernet/broadcom/bnge/bnge.h
> +++ b/drivers/net/ethernet/broadcom/bnge/bnge.h
> @@ -36,6 +36,7 @@ struct bnge_pf_info {
>   };
>   
>   #define INVALID_HW_RING_ID      ((u16)-1)
> +#define INVALID_HW_RING_ID_32BIT	(U32_MAX)

OK, there is much more usage of INVALID_HW_RING_ID than places touched
by this patch.

[...]

> +++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
> @@ -1327,12 +1327,12 @@ static int bnge_alloc_core(struct bnge_net *bn)
>   	return rc;
>   }
>   
> -u16 bnge_cp_ring_for_rx(struct bnge_rx_ring_info *rxr)
> +u32 bnge_cp_ring_for_rx(struct bnge_rx_ring_info *rxr)

and here you change Rx ring ID width.

>   {
>   	return rxr->rx_cpr->ring_struct.fw_ring_id;
>   }
>   
> -u16 bnge_cp_ring_for_tx(struct bnge_tx_ring_info *txr)
> +u32 bnge_cp_ring_for_tx(struct bnge_tx_ring_info *txr)
>   {
>   	return txr->tx_cpr->ring_struct.fw_ring_id;
>   }
> @@ -1375,12 +1375,12 @@ static void bnge_init_nq_tree(struct bnge_net *bn)
>   		struct bnge_nq_ring_info *nqr = &bn->bnapi[i]->nq_ring;
>   		struct bnge_ring_struct *ring = &nqr->ring_struct;
>   
> -		ring->fw_ring_id = INVALID_HW_RING_ID;
> +		ring->fw_ring_id = INVALID_HW_RING_ID_32BIT;
>   		for (j = 0; j < nqr->cp_ring_count; j++) {
>   			struct bnge_cp_ring_info *cpr = &nqr->cp_ring_arr[j];
>   
>   			ring = &cpr->ring_struct;
> -			ring->fw_ring_id = INVALID_HW_RING_ID;
> +			ring->fw_ring_id = INVALID_HW_RING_ID_32BIT;
>   		}
>   	}
>   }
> @@ -1637,7 +1637,7 @@ static void bnge_init_one_rx_ring_rxbd(struct bnge_net *bn,

ditto Rx

>   
>   	ring = &rxr->rx_ring_struct;
>   	bnge_init_rxbd_pages(ring, type);
> -	ring->fw_ring_id = INVALID_HW_RING_ID;
> +	ring->fw_ring_id = INVALID_HW_RING_ID_32BIT;
>   }
>   
>   static void bnge_init_one_agg_ring_rxbd(struct bnge_net *bn,
> @@ -1647,7 +1647,7 @@ static void bnge_init_one_agg_ring_rxbd(struct bnge_net *bn,

ditto Rx, and in some other places too