Subject: Re: [PATCH v5 net-next 2/2] net: airoha: Introduce ethernet support for EN7581 SoC

From: Simon Horman <[email-masked]>
Date: Fri, 5 Jul 2024 20:06:44 +0100

On Thu, Jul 04, 2024 at 10:08:11AM +0200, Lorenzo Bianconi wrote:
> Add airoha_eth driver in order to introduce ethernet support for
> Airoha EN7581 SoC available on EN7581 development board (en7581-evb).
> en7581-evb networking architecture is composed by airoha_eth as mac
> controller (cpu port) and a mt7530 dsa based switch.
> EN7581 mac controller is mainly composed by Frame Engine (FE) and
> QoS-DMA (QDMA) modules. FE is used for traffic offloading (just basic
> functionalities are supported now) while QDMA is used for DMA operation
> and QOS functionalities between mac layer and the dsa switch (hw QoS is
> not available yet and it will be added in the future).
> Currently only hw lan features are available, hw wan will be added with
> subsequent patches.
> 
> Tested-by: Benjamin Larsson <[email-masked]>
> Signed-off-by: Lorenzo Bianconi <[email-masked]>

...

> +static const char * const airoha_ethtool_stats_name[] = {
> +	"tx_eth_pkt_cnt",
> +	"tx_eth_byte_cnt",
> +	"tx_ok_pkt_cnt",
> +	"tx_ok_byte_cnt",
> +	"tx_eth_drop_cnt",
> +	"tx_eth_bc_cnt",
> +	"tx_eth_mc_cnt",
> +	"tx_eth_lt64_cnt",
> +	"tx_eth_eq64_cnt",
> +	"tx_eth_65_127_cnt",
> +	"tx_eth_128_255_cnt",
> +	"tx_eth_256_511_cnt",
> +	"tx_eth_512_1023_cnt",
> +	"tx_eth_1024_1518_cnt",
> +	"tx_eth_gt1518_cnt",
> +	"rx_eth_pkt_cnt",
> +	"rx_eth_byte_cnt",
> +	"rx_ok_pkt_cnt",
> +	"rx_ok_byte_cnt",
> +	"rx_eth_drop_cnt",
> +	"rx_eth_bc_cnt",
> +	"rx_eth_mc_cnt",
> +	"rx_eth_crc_drop_cnt",
> +	"rx_eth_frag_cnt",
> +	"rx_eth_jabber_cnt",
> +	"rx_eth_lt64_cnt",
> +	"rx_eth_eq64_cnt",
> +	"rx_eth_65_127_cnt",
> +	"rx_eth_128_255_cnt",
> +	"rx_eth_256_511_cnt",
> +	"rx_eth_512_1023_cnt",
> +	"rx_eth_1024_1518_cnt",
> +	"rx_eth_gt1518_cnt",
> +};

Hi Lorenzo,

Sorry for not noticing this earlier.
It seems to me that some of the stats above could
use standard stats, which is preferred.

Basically, my understanding is that one should:
1. Implement .ndo_get_stats64
   (that seems relevant here)
2. As appropriate implement ethtool_stats non-extended stats operations
   (perhaps not relevant here)
3. Then implement get_ethtool_stats for what is left over

...