Re: [PATCH net-next v6 3/6] net: bcmasp: Add support for ASP2.0 Ethernet controller

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On 6/2/2023 11:58 PM, Jakub Kicinski wrote:
On Thu,  1 Jun 2023 15:12:28 -0700 Justin Chen wrote:
+	/* general stats */
+	STAT_NETDEV(rx_packets),
+	STAT_NETDEV(tx_packets),
+	STAT_NETDEV(rx_bytes),
+	STAT_NETDEV(tx_bytes),
+	STAT_NETDEV(rx_errors),
+	STAT_NETDEV(tx_errors),
+	STAT_NETDEV(rx_dropped),
+	STAT_NETDEV(tx_dropped),
+	STAT_NETDEV(multicast),

please don't report standard interface stats in ethtool -S

+	/* UniMAC RSV counters */
+	STAT_BCMASP_MIB_RX("rx_64_octets", mib.rx.pkt_cnt.cnt_64),
+	STAT_BCMASP_MIB_RX("rx_65_127_oct", mib.rx.pkt_cnt.cnt_127),
+	STAT_BCMASP_MIB_RX("rx_128_255_oct", mib.rx.pkt_cnt.cnt_255),
+	STAT_BCMASP_MIB_RX("rx_256_511_oct", mib.rx.pkt_cnt.cnt_511),
+	STAT_BCMASP_MIB_RX("rx_512_1023_oct", mib.rx.pkt_cnt.cnt_1023),
+	STAT_BCMASP_MIB_RX("rx_1024_1518_oct", mib.rx.pkt_cnt.cnt_1518),
+	STAT_BCMASP_MIB_RX("rx_vlan_1519_1522_oct", mib.rx.pkt_cnt.cnt_mgv),
+	STAT_BCMASP_MIB_RX("rx_1522_2047_oct", mib.rx.pkt_cnt.cnt_2047),
+	STAT_BCMASP_MIB_RX("rx_2048_4095_oct", mib.rx.pkt_cnt.cnt_4095),
+	STAT_BCMASP_MIB_RX("rx_4096_9216_oct", mib.rx.pkt_cnt.cnt_9216),

these should also be removed, and you should implement @get_rmon_stats.

+	STAT_BCMASP_MIB_RX("rx_pkts", mib.rx.pkt),
+	STAT_BCMASP_MIB_RX("rx_bytes", mib.rx.bytes),
+	STAT_BCMASP_MIB_RX("rx_multicast", mib.rx.mca),
+	STAT_BCMASP_MIB_RX("rx_broadcast", mib.rx.bca),
+	STAT_BCMASP_MIB_RX("rx_fcs", mib.rx.fcs),

there's a FCS error statistic in the standard stats, no need to
duplicate

+	STAT_BCMASP_MIB_RX("rx_control", mib.rx.cf),
+	STAT_BCMASP_MIB_RX("rx_pause", mib.rx.pf),

@get_pause_stats

+	STAT_BCMASP_MIB_RX("rx_unknown", mib.rx.uo),
+	STAT_BCMASP_MIB_RX("rx_align", mib.rx.aln),
+	STAT_BCMASP_MIB_RX("rx_outrange", mib.rx.flr),
+	STAT_BCMASP_MIB_RX("rx_code", mib.rx.cde),
+	STAT_BCMASP_MIB_RX("rx_carrier", mib.rx.fcr),
+	STAT_BCMASP_MIB_RX("rx_oversize", mib.rx.ovr),
+	STAT_BCMASP_MIB_RX("rx_jabber", mib.rx.jbr),

these look like candidates from standard stats, too.
Please read thru:

https://docs.kernel.org/next/networking/statistics.html

+	STAT_BCMASP_MIB_RX("rx_mtu_err", mib.rx.mtue),
+	STAT_BCMASP_MIB_RX("rx_good_pkts", mib.rx.pok),
+	STAT_BCMASP_MIB_RX("rx_unicast", mib.rx.uc),
+	STAT_BCMASP_MIB_RX("rx_ppp", mib.rx.ppp),
+	STAT_BCMASP_MIB_RX("rx_crc", mib.rx.rcrc),

hm, what's the difference between rx_crc and rx_fcs ?

Since you are going to respin to address Jakub's feedback, we should also consider using the shared unimac.h header file. We could even make a library out of it for standardized statistics once this driver gets accepted.
--
Florian

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