LXR linux/drivers/infiniband/ulp/opa_vnic/opa_vnic

   1/*
   2 * Copyright(c) 2017 Intel Corporation.
   3 *
   4 * This file is provided under a dual BSD/GPLv2 license.  When using or
   5 * redistributing this file, you may do so under either license.
   6 *
   7 * GPL LICENSE SUMMARY
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of version 2 of the GNU General Public License as
  11 * published by the Free Software Foundation.
  12 *
  13 * This program is distributed in the hope that it will be useful, but
  14 * WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 * General Public License for more details.
  17 *
  18 * BSD LICENSE
  19 *
  20 * Redistribution and use in source and binary forms, with or without
  21 * modification, are permitted provided that the following conditions
  22 * are met:
  23 *
  24 *  - Redistributions of source code must retain the above copyright
  25 *    notice, this list of conditions and the following disclaimer.
  26 *  - Redistributions in binary form must reproduce the above copyright
  27 *    notice, this list of conditions and the following disclaimer in
  28 *    the documentation and/or other materials provided with the
  29 *    distribution.
  30 *  - Neither the name of Intel Corporation nor the names of its
  31 *    contributors may be used to endorse or promote products derived
  32 *    from this software without specific prior written permission.
  33 *
  34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  45 *
  46 */
  47
  48/*
  49 * This file contains OPA VNIC ethtool functions
  50 */
  51
  52#include <linux/ethtool.h>
  53
  54#include "opa_vnic_internal.h"
  55
  56enum {NETDEV_STATS, VNIC_STATS};
  57
  58struct vnic_stats {
  59        char stat_string[ETH_GSTRING_LEN];
  60        struct {
  61                int sizeof_stat;
  62                int stat_offset;
  63        };
  64};
  65
  66#define VNIC_STAT(m)            { FIELD_SIZEOF(struct opa_vnic_stats, m),   \
  67                                  offsetof(struct opa_vnic_stats, m) }
  68
  69static struct vnic_stats vnic_gstrings_stats[] = {
  70        /* NETDEV stats */
  71        {"rx_packets", VNIC_STAT(netstats.rx_packets)},
  72        {"tx_packets", VNIC_STAT(netstats.tx_packets)},
  73        {"rx_bytes", VNIC_STAT(netstats.rx_bytes)},
  74        {"tx_bytes", VNIC_STAT(netstats.tx_bytes)},
  75        {"rx_errors", VNIC_STAT(netstats.rx_errors)},
  76        {"tx_errors", VNIC_STAT(netstats.tx_errors)},
  77        {"rx_dropped", VNIC_STAT(netstats.rx_dropped)},
  78        {"tx_dropped", VNIC_STAT(netstats.tx_dropped)},
  79
  80        /* SUMMARY counters */
  81        {"tx_unicast", VNIC_STAT(tx_grp.unicast)},
  82        {"tx_mcastbcast", VNIC_STAT(tx_grp.mcastbcast)},
  83        {"tx_untagged", VNIC_STAT(tx_grp.untagged)},
  84        {"tx_vlan", VNIC_STAT(tx_grp.vlan)},
  85
  86        {"tx_64_size", VNIC_STAT(tx_grp.s_64)},
  87        {"tx_65_127", VNIC_STAT(tx_grp.s_65_127)},
  88        {"tx_128_255", VNIC_STAT(tx_grp.s_128_255)},
  89        {"tx_256_511", VNIC_STAT(tx_grp.s_256_511)},
  90        {"tx_512_1023", VNIC_STAT(tx_grp.s_512_1023)},
  91        {"tx_1024_1518", VNIC_STAT(tx_grp.s_1024_1518)},
  92        {"tx_1519_max", VNIC_STAT(tx_grp.s_1519_max)},
  93
  94        {"rx_unicast", VNIC_STAT(rx_grp.unicast)},
  95        {"rx_mcastbcast", VNIC_STAT(rx_grp.mcastbcast)},
  96        {"rx_untagged", VNIC_STAT(rx_grp.untagged)},
  97        {"rx_vlan", VNIC_STAT(rx_grp.vlan)},
  98
  99        {"rx_64_size", VNIC_STAT(rx_grp.s_64)},
 100        {"rx_65_127", VNIC_STAT(rx_grp.s_65_127)},
 101        {"rx_128_255", VNIC_STAT(rx_grp.s_128_255)},
 102        {"rx_256_511", VNIC_STAT(rx_grp.s_256_511)},
 103        {"rx_512_1023", VNIC_STAT(rx_grp.s_512_1023)},
 104        {"rx_1024_1518", VNIC_STAT(rx_grp.s_1024_1518)},
 105        {"rx_1519_max", VNIC_STAT(rx_grp.s_1519_max)},
 106
 107        /* ERROR counters */
 108        {"rx_fifo_errors", VNIC_STAT(netstats.rx_fifo_errors)},
 109        {"rx_length_errors", VNIC_STAT(netstats.rx_length_errors)},
 110
 111        {"tx_fifo_errors", VNIC_STAT(netstats.tx_fifo_errors)},
 112        {"tx_carrier_errors", VNIC_STAT(netstats.tx_carrier_errors)},
 113
 114        {"tx_dlid_zero", VNIC_STAT(tx_dlid_zero)},
 115        {"tx_drop_state", VNIC_STAT(tx_drop_state)},
 116        {"rx_drop_state", VNIC_STAT(rx_drop_state)},
 117        {"rx_oversize", VNIC_STAT(rx_oversize)},
 118        {"rx_runt", VNIC_STAT(rx_runt)},
 119};
 120
 121#define VNIC_STATS_LEN  ARRAY_SIZE(vnic_gstrings_stats)
 122
 123/* vnic_get_drvinfo - get driver info */
 124static void vnic_get_drvinfo(struct net_device *netdev,
 125                             struct ethtool_drvinfo *drvinfo)
 126{
 127        strlcpy(drvinfo->driver, opa_vnic_driver_name, sizeof(drvinfo->driver));
 128        strlcpy(drvinfo->version, opa_vnic_driver_version,
 129                sizeof(drvinfo->version));
 130        strlcpy(drvinfo->bus_info, dev_name(netdev->dev.parent),
 131                sizeof(drvinfo->bus_info));
 132}
 133
 134/* vnic_get_sset_count - get string set count */
 135static int vnic_get_sset_count(struct net_device *netdev, int sset)
 136{
 137        return (sset == ETH_SS_STATS) ? VNIC_STATS_LEN : -EOPNOTSUPP;
 138}
 139
 140/* vnic_get_ethtool_stats - get statistics */
 141static void vnic_get_ethtool_stats(struct net_device *netdev,
 142                                   struct ethtool_stats *stats, u64 *data)
 143{
 144        struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
 145        struct opa_vnic_stats vstats;
 146        int i;
 147
 148        memset(&vstats, 0, sizeof(vstats));
 149        spin_lock(&adapter->stats_lock);
 150        adapter->rn_ops->ndo_get_stats64(netdev, &vstats.netstats);
 151        spin_unlock(&adapter->stats_lock);
 152        for (i = 0; i < VNIC_STATS_LEN; i++) {
 153                char *p = (char *)&vstats + vnic_gstrings_stats[i].stat_offset;
 154
 155                data[i] = (vnic_gstrings_stats[i].sizeof_stat ==
 156                           sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 157        }
 158}
 159
 160/* vnic_get_strings - get strings */
 161static void vnic_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 162{
 163        int i;
 164
 165        if (stringset != ETH_SS_STATS)
 166                return;
 167
 168        for (i = 0; i < VNIC_STATS_LEN; i++)
 169                memcpy(data + i * ETH_GSTRING_LEN,
 170                       vnic_gstrings_stats[i].stat_string,
 171                       ETH_GSTRING_LEN);
 172}
 173
 174/* ethtool ops */
 175static const struct ethtool_ops opa_vnic_ethtool_ops = {
 176        .get_drvinfo = vnic_get_drvinfo,
 177        .get_link = ethtool_op_get_link,
 178        .get_strings = vnic_get_strings,
 179        .get_sset_count = vnic_get_sset_count,
 180        .get_ethtool_stats = vnic_get_ethtool_stats,
 181};
 182
 183/* opa_vnic_set_ethtool_ops - set ethtool ops */
 184void opa_vnic_set_ethtool_ops(struct net_device *netdev)
 185{
 186        netdev->ethtool_ops = &opa_vnic_ethtool_ops;
 187}
 188