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beb0e54f38
Implement the ethtool private statistics interface to expose additional port-level and MAC-level counters that are not covered by the standard IEEE 802.3 statistics. The pMAC counters are only reported when the port supports Frame Preemption (802.1Qbu/802.3br). Note that although rtnl_link_stats64 provides some standard statistics such as rx octets, rx frame errors, rx dropped packets, and tx packets, these are overall port statistics. The NETC switch supports preemption on each port, and each port has two MACs (eMAC and pMAC). The driver private statistics are used to obtain statistics for each MAC, allowing users to perform analysis and debugging. Signed-off-by: Wei Fang <wei.fang@nxp.com> Link: https://patch.msgid.link/20260518082506.1318236-16-wei.fang@nxp.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
292 lines
8.9 KiB
C
292 lines
8.9 KiB
C
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
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/*
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* NXP NETC switch driver
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* Copyright 2025-2026 NXP
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*/
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#include <linux/ethtool_netlink.h>
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#include "netc_switch.h"
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static const struct ethtool_rmon_hist_range netc_rmon_ranges[] = {
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{ 64, 64 },
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{ 65, 127 },
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{ 128, 255 },
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{ 256, 511 },
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{ 512, 1023 },
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{ 1024, 1522 },
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{ 1523, NETC_MAX_FRAME_LEN },
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{ }
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};
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static const struct netc_port_stat netc_port_counters[] = {
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{ NETC_PTGSLACR, "port gate late arrival frames" },
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{ NETC_PSDFTCR, "port SDF transmit frames" },
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{ NETC_PSDFDDCR, "port SDF drop duplicate frames" },
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{ NETC_PRXDCR, "port rx discard frames" },
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{ NETC_PRXDCRRR, "port rx discard read-reset" },
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{ NETC_PRXDCRR0, "port rx discard reason 0" },
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{ NETC_PRXDCRR1, "port rx discard reason 1" },
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{ NETC_PTXDCR, "port tx discard frames" },
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{ NETC_BPDCR, "bridge port discard frames" },
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};
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static const struct netc_port_stat netc_emac_counters[] = {
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{ NETC_PM_ROCT(0), "eMAC rx octets" },
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{ NETC_PM_RVLAN(0), "eMAC rx VLAN frames" },
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{ NETC_PM_RERR(0), "eMAC rx frame errors" },
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{ NETC_PM_RUCA(0), "eMAC rx unicast frames" },
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{ NETC_PM_RDRP(0), "eMAC rx dropped packets" },
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{ NETC_PM_RPKT(0), "eMAC rx packets" },
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{ NETC_PM_TOCT(0), "eMAC tx octets" },
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{ NETC_PM_TVLAN(0), "eMAC tx VLAN frames" },
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{ NETC_PM_TFCS(0), "eMAC tx FCS errors" },
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{ NETC_PM_TUCA(0), "eMAC tx unicast frames" },
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{ NETC_PM_TPKT(0), "eMAC tx packets" },
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{ NETC_PM_TUND(0), "eMAC tx undersized packets" },
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{ NETC_PM_TIOCT(0), "eMAC tx invalid octets" },
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};
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static const struct netc_port_stat netc_pmac_counters[] = {
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{ NETC_PM_ROCT(1), "pMAC rx octets" },
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{ NETC_PM_RVLAN(1), "pMAC rx VLAN frames" },
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{ NETC_PM_RERR(1), "pMAC rx frame errors" },
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{ NETC_PM_RUCA(1), "pMAC rx unicast frames" },
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{ NETC_PM_RDRP(1), "pMAC rx dropped packets" },
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{ NETC_PM_RPKT(1), "pMAC rx packets" },
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{ NETC_PM_TOCT(1), "pMAC tx octets" },
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{ NETC_PM_TVLAN(1), "pMAC tx VLAN frames" },
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{ NETC_PM_TFCS(1), "pMAC tx FCS errors" },
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{ NETC_PM_TUCA(1), "pMAC tx unicast frames" },
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{ NETC_PM_TPKT(1), "pMAC tx packets" },
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{ NETC_PM_TUND(1), "pMAC tx undersized packets" },
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{ NETC_PM_TIOCT(1), "pMAC tx invalid octets" },
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};
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static void netc_port_pause_stats(struct netc_port *np, int mac,
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struct ethtool_pause_stats *stats)
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{
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if (mac && !np->caps.pmac)
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return;
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stats->tx_pause_frames = netc_port_rd64(np, NETC_PM_TXPF(mac));
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stats->rx_pause_frames = netc_port_rd64(np, NETC_PM_RXPF(mac));
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}
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void netc_port_get_pause_stats(struct dsa_switch *ds, int port,
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struct ethtool_pause_stats *pause_stats)
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{
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struct netc_port *np = NETC_PORT(ds, port);
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struct net_device *ndev;
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switch (pause_stats->src) {
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case ETHTOOL_MAC_STATS_SRC_EMAC:
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netc_port_pause_stats(np, 0, pause_stats);
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break;
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case ETHTOOL_MAC_STATS_SRC_PMAC:
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netc_port_pause_stats(np, 1, pause_stats);
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break;
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case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
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ndev = dsa_to_port(ds, port)->user;
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ethtool_aggregate_pause_stats(ndev, pause_stats);
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break;
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}
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}
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static void netc_port_rmon_stats(struct netc_port *np, int mac,
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struct ethtool_rmon_stats *stats)
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{
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if (mac && !np->caps.pmac)
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return;
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stats->undersize_pkts = netc_port_rd64(np, NETC_PM_RUND(mac));
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stats->oversize_pkts = netc_port_rd64(np, NETC_PM_ROVR(mac));
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stats->fragments = netc_port_rd64(np, NETC_PM_RFRG(mac));
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stats->jabbers = netc_port_rd64(np, NETC_PM_RJBR(mac));
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stats->hist[0] = netc_port_rd64(np, NETC_PM_R64(mac));
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stats->hist[1] = netc_port_rd64(np, NETC_PM_R127(mac));
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stats->hist[2] = netc_port_rd64(np, NETC_PM_R255(mac));
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stats->hist[3] = netc_port_rd64(np, NETC_PM_R511(mac));
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stats->hist[4] = netc_port_rd64(np, NETC_PM_R1023(mac));
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stats->hist[5] = netc_port_rd64(np, NETC_PM_R1522(mac));
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stats->hist[6] = netc_port_rd64(np, NETC_PM_R1523X(mac));
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stats->hist_tx[0] = netc_port_rd64(np, NETC_PM_T64(mac));
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stats->hist_tx[1] = netc_port_rd64(np, NETC_PM_T127(mac));
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stats->hist_tx[2] = netc_port_rd64(np, NETC_PM_T255(mac));
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stats->hist_tx[3] = netc_port_rd64(np, NETC_PM_T511(mac));
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stats->hist_tx[4] = netc_port_rd64(np, NETC_PM_T1023(mac));
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stats->hist_tx[5] = netc_port_rd64(np, NETC_PM_T1522(mac));
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stats->hist_tx[6] = netc_port_rd64(np, NETC_PM_T1523X(mac));
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}
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void netc_port_get_rmon_stats(struct dsa_switch *ds, int port,
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struct ethtool_rmon_stats *rmon_stats,
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const struct ethtool_rmon_hist_range **ranges)
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{
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struct netc_port *np = NETC_PORT(ds, port);
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struct net_device *ndev;
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*ranges = netc_rmon_ranges;
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switch (rmon_stats->src) {
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case ETHTOOL_MAC_STATS_SRC_EMAC:
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netc_port_rmon_stats(np, 0, rmon_stats);
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break;
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case ETHTOOL_MAC_STATS_SRC_PMAC:
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netc_port_rmon_stats(np, 1, rmon_stats);
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break;
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case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
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ndev = dsa_to_port(ds, port)->user;
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ethtool_aggregate_rmon_stats(ndev, rmon_stats);
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break;
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}
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}
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static void netc_port_ctrl_stats(struct netc_port *np, int mac,
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struct ethtool_eth_ctrl_stats *stats)
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{
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if (mac && !np->caps.pmac)
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return;
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stats->MACControlFramesTransmitted =
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netc_port_rd64(np, NETC_PM_TCNP(mac));
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stats->MACControlFramesReceived =
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netc_port_rd64(np, NETC_PM_RCNP(mac));
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}
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void netc_port_get_eth_ctrl_stats(struct dsa_switch *ds, int port,
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struct ethtool_eth_ctrl_stats *ctrl_stats)
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{
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struct netc_port *np = NETC_PORT(ds, port);
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struct net_device *ndev;
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switch (ctrl_stats->src) {
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case ETHTOOL_MAC_STATS_SRC_EMAC:
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netc_port_ctrl_stats(np, 0, ctrl_stats);
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break;
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case ETHTOOL_MAC_STATS_SRC_PMAC:
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netc_port_ctrl_stats(np, 1, ctrl_stats);
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break;
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case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
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ndev = dsa_to_port(ds, port)->user;
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ethtool_aggregate_ctrl_stats(ndev, ctrl_stats);
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break;
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}
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}
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static void netc_port_mac_stats(struct netc_port *np, int mac,
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struct ethtool_eth_mac_stats *stats)
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{
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if (mac && !np->caps.pmac)
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return;
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stats->FramesTransmittedOK = netc_port_rd64(np, NETC_PM_TFRM(mac));
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stats->SingleCollisionFrames = netc_port_rd64(np, NETC_PM_TSCOL(mac));
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stats->MultipleCollisionFrames =
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netc_port_rd64(np, NETC_PM_TMCOL(mac));
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stats->FramesReceivedOK = netc_port_rd64(np, NETC_PM_RFRM(mac));
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stats->FrameCheckSequenceErrors =
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netc_port_rd64(np, NETC_PM_RFCS(mac));
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stats->AlignmentErrors = netc_port_rd64(np, NETC_PM_RALN(mac));
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stats->OctetsTransmittedOK = netc_port_rd64(np, NETC_PM_TEOCT(mac));
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stats->FramesWithDeferredXmissions =
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netc_port_rd64(np, NETC_PM_TDFR(mac));
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stats->LateCollisions = netc_port_rd64(np, NETC_PM_TLCOL(mac));
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stats->FramesAbortedDueToXSColls =
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netc_port_rd64(np, NETC_PM_TECOL(mac));
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stats->FramesLostDueToIntMACXmitError =
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netc_port_rd64(np, NETC_PM_TERR(mac));
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stats->OctetsReceivedOK = netc_port_rd64(np, NETC_PM_REOCT(mac));
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stats->FramesLostDueToIntMACRcvError =
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netc_port_rd64(np, NETC_PM_RDRNTP(mac));
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stats->MulticastFramesXmittedOK =
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netc_port_rd64(np, NETC_PM_TMCA(mac));
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stats->BroadcastFramesXmittedOK =
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netc_port_rd64(np, NETC_PM_TBCA(mac));
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stats->MulticastFramesReceivedOK =
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netc_port_rd64(np, NETC_PM_RMCA(mac));
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stats->BroadcastFramesReceivedOK =
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netc_port_rd64(np, NETC_PM_RBCA(mac));
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stats->FramesWithExcessiveDeferral =
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netc_port_rd64(np, NETC_PM_TEDFR(mac));
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}
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void netc_port_get_eth_mac_stats(struct dsa_switch *ds, int port,
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struct ethtool_eth_mac_stats *mac_stats)
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{
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struct netc_port *np = NETC_PORT(ds, port);
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struct net_device *ndev;
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switch (mac_stats->src) {
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case ETHTOOL_MAC_STATS_SRC_EMAC:
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netc_port_mac_stats(np, 0, mac_stats);
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break;
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case ETHTOOL_MAC_STATS_SRC_PMAC:
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netc_port_mac_stats(np, 1, mac_stats);
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break;
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case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
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ndev = dsa_to_port(ds, port)->user;
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ethtool_aggregate_mac_stats(ndev, mac_stats);
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break;
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}
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}
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int netc_port_get_sset_count(struct dsa_switch *ds, int port, int sset)
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{
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struct netc_port *np = NETC_PORT(ds, port);
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int size;
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if (sset != ETH_SS_STATS)
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return -EOPNOTSUPP;
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size = ARRAY_SIZE(netc_port_counters) +
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ARRAY_SIZE(netc_emac_counters);
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if (np->caps.pmac)
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size += ARRAY_SIZE(netc_pmac_counters);
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return size;
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}
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void netc_port_get_strings(struct dsa_switch *ds, int port,
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u32 sset, u8 *data)
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{
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struct netc_port *np = NETC_PORT(ds, port);
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int i;
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if (sset != ETH_SS_STATS)
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return;
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for (i = 0; i < ARRAY_SIZE(netc_port_counters); i++)
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ethtool_cpy(&data, netc_port_counters[i].name);
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for (i = 0; i < ARRAY_SIZE(netc_emac_counters); i++)
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ethtool_cpy(&data, netc_emac_counters[i].name);
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if (!np->caps.pmac)
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return;
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for (i = 0; i < ARRAY_SIZE(netc_pmac_counters); i++)
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ethtool_cpy(&data, netc_pmac_counters[i].name);
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}
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void netc_port_get_ethtool_stats(struct dsa_switch *ds, int port, u64 *data)
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{
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struct netc_port *np = NETC_PORT(ds, port);
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int i;
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for (i = 0; i < ARRAY_SIZE(netc_port_counters); i++)
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*data++ = netc_port_rd(np, netc_port_counters[i].reg);
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for (i = 0; i < ARRAY_SIZE(netc_emac_counters); i++)
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*data++ = netc_port_rd64(np, netc_emac_counters[i].reg);
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if (!np->caps.pmac)
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return;
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for (i = 0; i < ARRAY_SIZE(netc_pmac_counters); i++)
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*data++ = netc_port_rd64(np, netc_pmac_counters[i].reg);
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}
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