netdev - Re: [PATCH net-next 2/4] net: dsa: mv88e6xxx: Give each hw stat an ID

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Date: Mon, 4 Dec 2023 18:20:35 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: Tobias Waldekranz <tobias@...dekranz.com>
Cc: davem@...emloft.net, kuba@...nel.org, andrew@...n.ch,
	f.fainelli@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 2/4] net: dsa: mv88e6xxx: Give each hw stat an ID

On Fri, Dec 01, 2023 at 01:58:10PM +0100, Tobias Waldekranz wrote:
> +#define MV88E6XXX_HW_STAT_MAPPER(_fn)				   \
> +	_fn(in_good_octets,		8, 0x00, STATS_TYPE_BANK0) \
> +	_fn(in_bad_octets,		4, 0x02, STATS_TYPE_BANK0) \
> +	_fn(in_unicast,			4, 0x04, STATS_TYPE_BANK0) \
> +	_fn(in_broadcasts,		4, 0x06, STATS_TYPE_BANK0) \
> +	_fn(in_multicasts,		4, 0x07, STATS_TYPE_BANK0) \
> +	_fn(in_pause,			4, 0x16, STATS_TYPE_BANK0) \
> +	_fn(in_undersize,		4, 0x18, STATS_TYPE_BANK0) \
> +	_fn(in_fragments,		4, 0x19, STATS_TYPE_BANK0) \
> +	_fn(in_oversize,		4, 0x1a, STATS_TYPE_BANK0) \
> +	_fn(in_jabber,			4, 0x1b, STATS_TYPE_BANK0) \
> +	_fn(in_rx_error,		4, 0x1c, STATS_TYPE_BANK0) \
> +	_fn(in_fcs_error,		4, 0x1d, STATS_TYPE_BANK0) \
> +	_fn(out_octets,			8, 0x0e, STATS_TYPE_BANK0) \
> +	_fn(out_unicast,		4, 0x10, STATS_TYPE_BANK0) \
> +	_fn(out_broadcasts,		4, 0x13, STATS_TYPE_BANK0) \
> +	_fn(out_multicasts,		4, 0x12, STATS_TYPE_BANK0) \
> +	_fn(out_pause,			4, 0x15, STATS_TYPE_BANK0) \
> +	_fn(excessive,			4, 0x11, STATS_TYPE_BANK0) \
> +	_fn(collisions,			4, 0x1e, STATS_TYPE_BANK0) \
> +	_fn(deferred,			4, 0x05, STATS_TYPE_BANK0) \
> +	_fn(single,			4, 0x14, STATS_TYPE_BANK0) \
> +	_fn(multiple,			4, 0x17, STATS_TYPE_BANK0) \
> +	_fn(out_fcs_error,		4, 0x03, STATS_TYPE_BANK0) \
> +	_fn(late,			4, 0x1f, STATS_TYPE_BANK0) \
> +	_fn(hist_64bytes,		4, 0x08, STATS_TYPE_BANK0) \
> +	_fn(hist_65_127bytes,		4, 0x09, STATS_TYPE_BANK0) \
> +	_fn(hist_128_255bytes,		4, 0x0a, STATS_TYPE_BANK0) \
> +	_fn(hist_256_511bytes,		4, 0x0b, STATS_TYPE_BANK0) \
> +	_fn(hist_512_1023bytes,		4, 0x0c, STATS_TYPE_BANK0) \
> +	_fn(hist_1024_max_bytes,	4, 0x0d, STATS_TYPE_BANK0) \
> +	_fn(sw_in_discards,		4, 0x10, STATS_TYPE_PORT)  \
> +	_fn(sw_in_filtered,		2, 0x12, STATS_TYPE_PORT)  \
> +	_fn(sw_out_filtered,		2, 0x13, STATS_TYPE_PORT)  \
> +	_fn(in_discards,		4, 0x00, STATS_TYPE_BANK1) \
> +	_fn(in_filtered,		4, 0x01, STATS_TYPE_BANK1) \
> +	_fn(in_accepted,		4, 0x02, STATS_TYPE_BANK1) \
> +	_fn(in_bad_accepted,		4, 0x03, STATS_TYPE_BANK1) \
> +	_fn(in_good_avb_class_a,	4, 0x04, STATS_TYPE_BANK1) \
> +	_fn(in_good_avb_class_b,	4, 0x05, STATS_TYPE_BANK1) \
> +	_fn(in_bad_avb_class_a,		4, 0x06, STATS_TYPE_BANK1) \
> +	_fn(in_bad_avb_class_b,		4, 0x07, STATS_TYPE_BANK1) \
> +	_fn(tcam_counter_0,		4, 0x08, STATS_TYPE_BANK1) \
> +	_fn(tcam_counter_1,		4, 0x09, STATS_TYPE_BANK1) \
> +	_fn(tcam_counter_2,		4, 0x0a, STATS_TYPE_BANK1) \
> +	_fn(tcam_counter_3,		4, 0x0b, STATS_TYPE_BANK1) \
> +	_fn(in_da_unknown,		4, 0x0e, STATS_TYPE_BANK1) \
> +	_fn(in_management,		4, 0x0f, STATS_TYPE_BANK1) \
> +	_fn(out_queue_0,		4, 0x10, STATS_TYPE_BANK1) \
> +	_fn(out_queue_1,		4, 0x11, STATS_TYPE_BANK1) \
> +	_fn(out_queue_2,		4, 0x12, STATS_TYPE_BANK1) \
> +	_fn(out_queue_3,		4, 0x13, STATS_TYPE_BANK1) \
> +	_fn(out_queue_4,		4, 0x14, STATS_TYPE_BANK1) \
> +	_fn(out_queue_5,		4, 0x15, STATS_TYPE_BANK1) \
> +	_fn(out_queue_6,		4, 0x16, STATS_TYPE_BANK1) \
> +	_fn(out_queue_7,		4, 0x17, STATS_TYPE_BANK1) \
> +	_fn(out_cut_through,		4, 0x18, STATS_TYPE_BANK1) \
> +	_fn(out_octets_a,		4, 0x1a, STATS_TYPE_BANK1) \
> +	_fn(out_octets_b,		4, 0x1b, STATS_TYPE_BANK1) \
> +	_fn(out_management,		4, 0x1f, STATS_TYPE_BANK1) \
> +	/*  */
> +
> +#define MV88E6XXX_HW_STAT_ENTRY(_string, _size, _reg, _type) \
> +	{ #_string, _size, _reg, _type },

I think it would look better to take the comma out of this macro and put
it into its callers, so that enums and arrays have the natural separators
between elements.

> +static const struct mv88e6xxx_hw_stat mv88e6xxx_hw_stats[] = {
> +	MV88E6XXX_HW_STAT_MAPPER(MV88E6XXX_HW_STAT_ENTRY)
> +};
> +
> +#define MV88E6XXX_HW_STAT_ENUM(_string, _size, _reg, _type) \
> +	MV88E6XXX_HW_STAT_ID_ ## _string,
> +enum mv88e6xxx_hw_stat_id {
> +	MV88E6XXX_HW_STAT_MAPPER(MV88E6XXX_HW_STAT_ENUM)
> +
> +	MV88E6XXX_HW_STAT_ID_MAX
>  };