drivers/net/ethernet/cisco/enic/enic_ethtool.c

   1 /**
   2  * Copyright 2013 Cisco Systems, Inc.  All rights reserved.
   3  *
   4  * This program is free software; you may redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   9  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  10  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  11  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  12  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  13  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  14  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  15  * SOFTWARE.
  16  *
  17  */
  18
  19 #include <linux/netdevice.h>
  20 #include <linux/ethtool.h>
  21
  22 #include "enic_res.h"
  23 #include "enic.h"
  24 #include "enic_dev.h"
  25
  26 struct enic_stat {
  27         char name[ETH_GSTRING_LEN];
  28         unsigned int index;
  29 };
  30
  31 #define ENIC_TX_STAT(stat) { \
  32         .name = #stat, \
  33         .index = offsetof(struct vnic_tx_stats, stat) / sizeof(u64) \
  34 }
  35
  36 #define ENIC_RX_STAT(stat) { \
  37         .name = #stat, \
  38         .index = offsetof(struct vnic_rx_stats, stat) / sizeof(u64) \
  39 }
  40
  41 static const struct enic_stat enic_tx_stats[] = {
  42         ENIC_TX_STAT(tx_frames_ok),
  43         ENIC_TX_STAT(tx_unicast_frames_ok),
  44         ENIC_TX_STAT(tx_multicast_frames_ok),
  45         ENIC_TX_STAT(tx_broadcast_frames_ok),
  46         ENIC_TX_STAT(tx_bytes_ok),
  47         ENIC_TX_STAT(tx_unicast_bytes_ok),
  48         ENIC_TX_STAT(tx_multicast_bytes_ok),
  49         ENIC_TX_STAT(tx_broadcast_bytes_ok),
  50         ENIC_TX_STAT(tx_drops),
  51         ENIC_TX_STAT(tx_errors),
  52         ENIC_TX_STAT(tx_tso),
  53 };
  54
  55 static const struct enic_stat enic_rx_stats[] = {
  56         ENIC_RX_STAT(rx_frames_ok),
  57         ENIC_RX_STAT(rx_frames_total),
  58         ENIC_RX_STAT(rx_unicast_frames_ok),
  59         ENIC_RX_STAT(rx_multicast_frames_ok),
  60         ENIC_RX_STAT(rx_broadcast_frames_ok),
  61         ENIC_RX_STAT(rx_bytes_ok),
  62         ENIC_RX_STAT(rx_unicast_bytes_ok),
  63         ENIC_RX_STAT(rx_multicast_bytes_ok),
  64         ENIC_RX_STAT(rx_broadcast_bytes_ok),
  65         ENIC_RX_STAT(rx_drop),
  66         ENIC_RX_STAT(rx_no_bufs),
  67         ENIC_RX_STAT(rx_errors),
  68         ENIC_RX_STAT(rx_rss),
  69         ENIC_RX_STAT(rx_crc_errors),
  70         ENIC_RX_STAT(rx_frames_64),
  71         ENIC_RX_STAT(rx_frames_127),
  72         ENIC_RX_STAT(rx_frames_255),
  73         ENIC_RX_STAT(rx_frames_511),
  74         ENIC_RX_STAT(rx_frames_1023),
  75         ENIC_RX_STAT(rx_frames_1518),
  76         ENIC_RX_STAT(rx_frames_to_max),
  77 };
  78
  79 static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
  80 static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
  81
  82 static int enic_get_settings(struct net_device *netdev,
  83         struct ethtool_cmd *ecmd)
  84 {
  85         struct enic *enic = netdev_priv(netdev);
  86
  87         ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
  88         ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
  89         ecmd->port = PORT_FIBRE;
  90         ecmd->transceiver = XCVR_EXTERNAL;
  91
  92         if (netif_carrier_ok(netdev)) {
  93                 ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev));
  94                 ecmd->duplex = DUPLEX_FULL;
  95         } else {
  96                 ethtool_cmd_speed_set(ecmd, -1);
  97                 ecmd->duplex = -1;
  98         }
  99
 100         ecmd->autoneg = AUTONEG_DISABLE;
 101
 102         return 0;
 103 }
 104
 105 static void enic_get_drvinfo(struct net_device *netdev,
 106         struct ethtool_drvinfo *drvinfo)
 107 {
 108         struct enic *enic = netdev_priv(netdev);
 109         struct vnic_devcmd_fw_info *fw_info;
 110
 111         enic_dev_fw_info(enic, &fw_info);
 112
 113         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 114         strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
 115         strlcpy(drvinfo->fw_version, fw_info->fw_version,
 116                 sizeof(drvinfo->fw_version));
 117         strlcpy(drvinfo->bus_info, pci_name(enic->pdev),
 118                 sizeof(drvinfo->bus_info));
 119 }
 120
 121 static void enic_get_strings(struct net_device *netdev, u32 stringset,
 122         u8 *data)
 123 {
 124         unsigned int i;
 125
 126         switch (stringset) {
 127         case ETH_SS_STATS:
 128                 for (i = 0; i < enic_n_tx_stats; i++) {
 129                         memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
 130                         data += ETH_GSTRING_LEN;
 131                 }
 132                 for (i = 0; i < enic_n_rx_stats; i++) {
 133                         memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
 134                         data += ETH_GSTRING_LEN;
 135                 }
 136                 break;
 137         }
 138 }
 139
 140 static int enic_get_sset_count(struct net_device *netdev, int sset)
 141 {
 142         switch (sset) {
 143         case ETH_SS_STATS:
 144                 return enic_n_tx_stats + enic_n_rx_stats;
 145         default:
 146                 return -EOPNOTSUPP;
 147         }
 148 }
 149
 150 static void enic_get_ethtool_stats(struct net_device *netdev,
 151         struct ethtool_stats *stats, u64 *data)
 152 {
 153         struct enic *enic = netdev_priv(netdev);
 154         struct vnic_stats *vstats;
 155         unsigned int i;
 156
 157         enic_dev_stats_dump(enic, &vstats);
 158
 159         for (i = 0; i < enic_n_tx_stats; i++)
 160                 *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].index];
 161         for (i = 0; i < enic_n_rx_stats; i++)
 162                 *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].index];
 163 }
 164
 165 static u32 enic_get_msglevel(struct net_device *netdev)
 166 {
 167         struct enic *enic = netdev_priv(netdev);
 168         return enic->msg_enable;
 169 }
 170
 171 static void enic_set_msglevel(struct net_device *netdev, u32 value)
 172 {
 173         struct enic *enic = netdev_priv(netdev);
 174         enic->msg_enable = value;
 175 }
 176
 177 static int enic_get_coalesce(struct net_device *netdev,
 178         struct ethtool_coalesce *ecmd)
 179 {
 180         struct enic *enic = netdev_priv(netdev);
 181
 182         ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
 183         ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
 184
 185         return 0;
 186 }
 187
 188 static int enic_set_coalesce(struct net_device *netdev,
 189         struct ethtool_coalesce *ecmd)
 190 {
 191         struct enic *enic = netdev_priv(netdev);
 192         u32 tx_coalesce_usecs;
 193         u32 rx_coalesce_usecs;
 194         unsigned int i, intr;
 195
 196         tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
 197                 vnic_dev_get_intr_coal_timer_max(enic->vdev));
 198         rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
 199                 vnic_dev_get_intr_coal_timer_max(enic->vdev));
 200
 201         switch (vnic_dev_get_intr_mode(enic->vdev)) {
 202         case VNIC_DEV_INTR_MODE_INTX:
 203                 if (tx_coalesce_usecs != rx_coalesce_usecs)
 204                         return -EINVAL;
 205
 206                 intr = enic_legacy_io_intr();
 207                 vnic_intr_coalescing_timer_set(&enic->intr[intr],
 208                         tx_coalesce_usecs);
 209                 break;
 210         case VNIC_DEV_INTR_MODE_MSI:
 211                 if (tx_coalesce_usecs != rx_coalesce_usecs)
 212                         return -EINVAL;
 213
 214                 vnic_intr_coalescing_timer_set(&enic->intr[0],
 215                         tx_coalesce_usecs);
 216                 break;
 217         case VNIC_DEV_INTR_MODE_MSIX:
 218                 for (i = 0; i < enic->wq_count; i++) {
 219                         intr = enic_msix_wq_intr(enic, i);
 220                         vnic_intr_coalescing_timer_set(&enic->intr[intr],
 221                                 tx_coalesce_usecs);
 222                 }
 223
 224                 for (i = 0; i < enic->rq_count; i++) {
 225                         intr = enic_msix_rq_intr(enic, i);
 226                         vnic_intr_coalescing_timer_set(&enic->intr[intr],
 227                                 rx_coalesce_usecs);
 228                 }
 229
 230                 break;
 231         default:
 232                 break;
 233         }
 234
 235         enic->tx_coalesce_usecs = tx_coalesce_usecs;
 236         enic->rx_coalesce_usecs = rx_coalesce_usecs;
 237
 238         return 0;
 239 }
 240
 241 static const struct ethtool_ops enic_ethtool_ops = {
 242         .get_settings = enic_get_settings,
 243         .get_drvinfo = enic_get_drvinfo,
 244         .get_msglevel = enic_get_msglevel,
 245         .set_msglevel = enic_set_msglevel,
 246         .get_link = ethtool_op_get_link,
 247         .get_strings = enic_get_strings,
 248         .get_sset_count = enic_get_sset_count,
 249         .get_ethtool_stats = enic_get_ethtool_stats,
 250         .get_coalesce = enic_get_coalesce,
 251         .set_coalesce = enic_set_coalesce,
 252 };
 253
 254 void enic_set_ethtool_ops(struct net_device *netdev)
 255 {
 256         netdev->ethtool_ops = &enic_ethtool_ops;
 257 }