drivers/infiniband/ulp/opa_vnic/opa_vnic_ethtool.c

   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
  56 enum {NETDEV_STATS, VNIC_STATS};
  57
  58 struct 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)            { sizeof_field(struct opa_vnic_stats, m),   \
  67                                   offsetof(struct opa_vnic_stats, m) }
  68
  69 static 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 */
 124 static 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->bus_info, dev_name(netdev->dev.parent),
 129                 sizeof(drvinfo->bus_info));
 130 }
 131
 132 /* vnic_get_sset_count - get string set count */
 133 static int vnic_get_sset_count(struct net_device *netdev, int sset)
 134 {
 135         return (sset == ETH_SS_STATS) ? VNIC_STATS_LEN : -EOPNOTSUPP;
 136 }
 137
 138 /* vnic_get_ethtool_stats - get statistics */
 139 static void vnic_get_ethtool_stats(struct net_device *netdev,
 140                                    struct ethtool_stats *stats, u64 *data)
 141 {
 142         struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
 143         struct opa_vnic_stats vstats;
 144         int i;
 145
 146         memset(&vstats, 0, sizeof(vstats));
 147         spin_lock(&adapter->stats_lock);
 148         adapter->rn_ops->ndo_get_stats64(netdev, &vstats.netstats);
 149         spin_unlock(&adapter->stats_lock);
 150         for (i = 0; i < VNIC_STATS_LEN; i++) {
 151                 char *p = (char *)&vstats + vnic_gstrings_stats[i].stat_offset;
 152
 153                 data[i] = (vnic_gstrings_stats[i].sizeof_stat ==
 154                            sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
 155         }
 156 }
 157
 158 /* vnic_get_strings - get strings */
 159 static void vnic_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
 160 {
 161         int i;
 162
 163         if (stringset != ETH_SS_STATS)
 164                 return;
 165
 166         for (i = 0; i < VNIC_STATS_LEN; i++)
 167                 memcpy(data + i * ETH_GSTRING_LEN,
 168                        vnic_gstrings_stats[i].stat_string,
 169                        ETH_GSTRING_LEN);
 170 }
 171
 172 /* ethtool ops */
 173 static const struct ethtool_ops opa_vnic_ethtool_ops = {
 174         .get_drvinfo = vnic_get_drvinfo,
 175         .get_link = ethtool_op_get_link,
 176         .get_strings = vnic_get_strings,
 177         .get_sset_count = vnic_get_sset_count,
 178         .get_ethtool_stats = vnic_get_ethtool_stats,
 179 };
 180
 181 /* opa_vnic_set_ethtool_ops - set ethtool ops */
 182 void opa_vnic_set_ethtool_ops(struct net_device *netdev)
 183 {
 184         netdev->ethtool_ops = &opa_vnic_ethtool_ops;
 185 }