drivers/net/benet/be_ethtool.c

   1 /*
   2  * Copyright (C) 2005 - 2009 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17
  18 #include "be.h"
  19 #include <linux/ethtool.h>
  20
  21 struct be_ethtool_stat {
  22         char desc[ETH_GSTRING_LEN];
  23         int type;
  24         int size;
  25         int offset;
  26 };
  27
  28 enum {NETSTAT, PORTSTAT, MISCSTAT, DRVSTAT, ERXSTAT};
  29 #define FIELDINFO(_struct, field) FIELD_SIZEOF(_struct, field), \
  30                                         offsetof(_struct, field)
  31 #define NETSTAT_INFO(field)     #field, NETSTAT,\
  32                                         FIELDINFO(struct net_device_stats,\
  33                                                 field)
  34 #define DRVSTAT_INFO(field)     #field, DRVSTAT,\
  35                                         FIELDINFO(struct be_drvr_stats, field)
  36 #define MISCSTAT_INFO(field)    #field, MISCSTAT,\
  37                                         FIELDINFO(struct be_rxf_stats, field)
  38 #define PORTSTAT_INFO(field)    #field, PORTSTAT,\
  39                                         FIELDINFO(struct be_port_rxf_stats, \
  40                                                 field)
  41 #define ERXSTAT_INFO(field)     #field, ERXSTAT,\
  42                                         FIELDINFO(struct be_erx_stats, field)
  43
  44 static const struct be_ethtool_stat et_stats[] = {
  45         {NETSTAT_INFO(rx_packets)},
  46         {NETSTAT_INFO(tx_packets)},
  47         {NETSTAT_INFO(rx_bytes)},
  48         {NETSTAT_INFO(tx_bytes)},
  49         {NETSTAT_INFO(rx_errors)},
  50         {NETSTAT_INFO(tx_errors)},
  51         {NETSTAT_INFO(rx_dropped)},
  52         {NETSTAT_INFO(tx_dropped)},
  53         {DRVSTAT_INFO(be_tx_reqs)},
  54         {DRVSTAT_INFO(be_tx_stops)},
  55         {DRVSTAT_INFO(be_fwd_reqs)},
  56         {DRVSTAT_INFO(be_tx_wrbs)},
  57         {DRVSTAT_INFO(be_polls)},
  58         {DRVSTAT_INFO(be_tx_events)},
  59         {DRVSTAT_INFO(be_rx_events)},
  60         {DRVSTAT_INFO(be_tx_compl)},
  61         {DRVSTAT_INFO(be_rx_compl)},
  62         {DRVSTAT_INFO(be_ethrx_post_fail)},
  63         {DRVSTAT_INFO(be_802_3_dropped_frames)},
  64         {DRVSTAT_INFO(be_802_3_malformed_frames)},
  65         {DRVSTAT_INFO(be_tx_rate)},
  66         {DRVSTAT_INFO(be_rx_rate)},
  67         {PORTSTAT_INFO(rx_unicast_frames)},
  68         {PORTSTAT_INFO(rx_multicast_frames)},
  69         {PORTSTAT_INFO(rx_broadcast_frames)},
  70         {PORTSTAT_INFO(rx_crc_errors)},
  71         {PORTSTAT_INFO(rx_alignment_symbol_errors)},
  72         {PORTSTAT_INFO(rx_pause_frames)},
  73         {PORTSTAT_INFO(rx_control_frames)},
  74         {PORTSTAT_INFO(rx_in_range_errors)},
  75         {PORTSTAT_INFO(rx_out_range_errors)},
  76         {PORTSTAT_INFO(rx_frame_too_long)},
  77         {PORTSTAT_INFO(rx_address_match_errors)},
  78         {PORTSTAT_INFO(rx_vlan_mismatch)},
  79         {PORTSTAT_INFO(rx_dropped_too_small)},
  80         {PORTSTAT_INFO(rx_dropped_too_short)},
  81         {PORTSTAT_INFO(rx_dropped_header_too_small)},
  82         {PORTSTAT_INFO(rx_dropped_tcp_length)},
  83         {PORTSTAT_INFO(rx_dropped_runt)},
  84         {PORTSTAT_INFO(rx_fifo_overflow)},
  85         {PORTSTAT_INFO(rx_input_fifo_overflow)},
  86         {PORTSTAT_INFO(rx_ip_checksum_errs)},
  87         {PORTSTAT_INFO(rx_tcp_checksum_errs)},
  88         {PORTSTAT_INFO(rx_udp_checksum_errs)},
  89         {PORTSTAT_INFO(rx_non_rss_packets)},
  90         {PORTSTAT_INFO(rx_ipv4_packets)},
  91         {PORTSTAT_INFO(rx_ipv6_packets)},
  92         {PORTSTAT_INFO(tx_unicastframes)},
  93         {PORTSTAT_INFO(tx_multicastframes)},
  94         {PORTSTAT_INFO(tx_broadcastframes)},
  95         {PORTSTAT_INFO(tx_pauseframes)},
  96         {PORTSTAT_INFO(tx_controlframes)},
  97         {MISCSTAT_INFO(rx_drops_no_pbuf)},
  98         {MISCSTAT_INFO(rx_drops_no_txpb)},
  99         {MISCSTAT_INFO(rx_drops_no_erx_descr)},
 100         {MISCSTAT_INFO(rx_drops_no_tpre_descr)},
 101         {MISCSTAT_INFO(rx_drops_too_many_frags)},
 102         {MISCSTAT_INFO(rx_drops_invalid_ring)},
 103         {MISCSTAT_INFO(forwarded_packets)},
 104         {MISCSTAT_INFO(rx_drops_mtu)},
 105         {ERXSTAT_INFO(rx_drops_no_fragments)},
 106 };
 107 #define ETHTOOL_STATS_NUM ARRAY_SIZE(et_stats)
 108
 109 static void
 110 be_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
 111 {
 112         struct be_adapter *adapter = netdev_priv(netdev);
 113
 114         strcpy(drvinfo->driver, DRV_NAME);
 115         strcpy(drvinfo->version, DRV_VER);
 116         strncpy(drvinfo->fw_version, adapter->fw_ver, FW_VER_LEN);
 117         strcpy(drvinfo->bus_info, pci_name(adapter->pdev));
 118         drvinfo->testinfo_len = 0;
 119         drvinfo->regdump_len = 0;
 120         drvinfo->eedump_len = 0;
 121 }
 122
 123 static int
 124 be_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
 125 {
 126         struct be_adapter *adapter = netdev_priv(netdev);
 127         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 128         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 129
 130         coalesce->rx_max_coalesced_frames = adapter->max_rx_coal;
 131
 132         coalesce->rx_coalesce_usecs = rx_eq->cur_eqd;
 133         coalesce->rx_coalesce_usecs_high = rx_eq->max_eqd;
 134         coalesce->rx_coalesce_usecs_low = rx_eq->min_eqd;
 135
 136         coalesce->tx_coalesce_usecs = tx_eq->cur_eqd;
 137         coalesce->tx_coalesce_usecs_high = tx_eq->max_eqd;
 138         coalesce->tx_coalesce_usecs_low = tx_eq->min_eqd;
 139
 140         coalesce->use_adaptive_rx_coalesce = rx_eq->enable_aic;
 141         coalesce->use_adaptive_tx_coalesce = tx_eq->enable_aic;
 142
 143         return 0;
 144 }
 145
 146 /*
 147  * This routine is used to set interrup coalescing delay *as well as*
 148  * the number of pkts to coalesce for LRO.
 149  */
 150 static int
 151 be_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
 152 {
 153         struct be_adapter *adapter = netdev_priv(netdev);
 154         struct be_ctrl_info *ctrl = &adapter->ctrl;
 155         struct be_eq_obj *rx_eq = &adapter->rx_eq;
 156         struct be_eq_obj *tx_eq = &adapter->tx_eq;
 157         u32 tx_max, tx_min, tx_cur;
 158         u32 rx_max, rx_min, rx_cur;
 159         int status = 0;
 160
 161         if (coalesce->use_adaptive_tx_coalesce == 1)
 162                 return -EINVAL;
 163
 164         adapter->max_rx_coal = coalesce->rx_max_coalesced_frames;
 165         if (adapter->max_rx_coal > MAX_SKB_FRAGS)
 166                 adapter->max_rx_coal = MAX_SKB_FRAGS - 1;
 167
 168         /* if AIC is being turned on now, start with an EQD of 0 */
 169         if (rx_eq->enable_aic == 0 &&
 170                 coalesce->use_adaptive_rx_coalesce == 1) {
 171                 rx_eq->cur_eqd = 0;
 172         }
 173         rx_eq->enable_aic = coalesce->use_adaptive_rx_coalesce;
 174
 175         rx_max = coalesce->rx_coalesce_usecs_high;
 176         rx_min = coalesce->rx_coalesce_usecs_low;
 177         rx_cur = coalesce->rx_coalesce_usecs;
 178
 179         tx_max = coalesce->tx_coalesce_usecs_high;
 180         tx_min = coalesce->tx_coalesce_usecs_low;
 181         tx_cur = coalesce->tx_coalesce_usecs;
 182
 183         if (tx_cur > BE_MAX_EQD)
 184                 tx_cur = BE_MAX_EQD;
 185         if (tx_eq->cur_eqd != tx_cur) {
 186                 status = be_cmd_modify_eqd(ctrl, tx_eq->q.id, tx_cur);
 187                 if (!status)
 188                         tx_eq->cur_eqd = tx_cur;
 189         }
 190
 191         if (rx_eq->enable_aic) {
 192                 if (rx_max > BE_MAX_EQD)
 193                         rx_max = BE_MAX_EQD;
 194                 if (rx_min > rx_max)
 195                         rx_min = rx_max;
 196                 rx_eq->max_eqd = rx_max;
 197                 rx_eq->min_eqd = rx_min;
 198                 if (rx_eq->cur_eqd > rx_max)
 199                         rx_eq->cur_eqd = rx_max;
 200                 if (rx_eq->cur_eqd < rx_min)
 201                         rx_eq->cur_eqd = rx_min;
 202         } else {
 203                 if (rx_cur > BE_MAX_EQD)
 204                         rx_cur = BE_MAX_EQD;
 205                 if (rx_eq->cur_eqd != rx_cur) {
 206                         status = be_cmd_modify_eqd(ctrl, rx_eq->q.id, rx_cur);
 207                         if (!status)
 208                                 rx_eq->cur_eqd = rx_cur;
 209                 }
 210         }
 211         return 0;
 212 }
 213
 214 static u32 be_get_rx_csum(struct net_device *netdev)
 215 {
 216         struct be_adapter *adapter = netdev_priv(netdev);
 217
 218         return adapter->rx_csum;
 219 }
 220
 221 static int be_set_rx_csum(struct net_device *netdev, uint32_t data)
 222 {
 223         struct be_adapter *adapter = netdev_priv(netdev);
 224
 225         if (data)
 226                 adapter->rx_csum = true;
 227         else
 228                 adapter->rx_csum = false;
 229
 230         return 0;
 231 }
 232
 233 static void
 234 be_get_ethtool_stats(struct net_device *netdev,
 235                 struct ethtool_stats *stats, uint64_t *data)
 236 {
 237         struct be_adapter *adapter = netdev_priv(netdev);
 238         struct be_drvr_stats *drvr_stats = &adapter->stats.drvr_stats;
 239         struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
 240         struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
 241         struct be_port_rxf_stats *port_stats =
 242                         &rxf_stats->port[adapter->port_num];
 243         struct net_device_stats *net_stats = &adapter->stats.net_stats;
 244         struct be_erx_stats *erx_stats = &hw_stats->erx;
 245         void *p = NULL;
 246         int i;
 247
 248         for (i = 0; i < ETHTOOL_STATS_NUM; i++) {
 249                 switch (et_stats[i].type) {
 250                 case NETSTAT:
 251                         p = net_stats;
 252                         break;
 253                 case DRVSTAT:
 254                         p = drvr_stats;
 255                         break;
 256                 case PORTSTAT:
 257                         p = port_stats;
 258                         break;
 259                 case MISCSTAT:
 260                         p = rxf_stats;
 261                         break;
 262                 case ERXSTAT: /* Currently only one ERX stat is provided */
 263                         p = (u32 *)erx_stats + adapter->rx_obj.q.id;
 264                         break;
 265                 }
 266
 267                 p = (u8 *)p + et_stats[i].offset;
 268                 data[i] = (et_stats[i].size == sizeof(u64)) ?
 269                                 *(u64 *)p: *(u32 *)p;
 270         }
 271
 272         return;
 273 }
 274
 275 static void
 276 be_get_stat_strings(struct net_device *netdev, uint32_t stringset,
 277                 uint8_t *data)
 278 {
 279         int i;
 280         switch (stringset) {
 281         case ETH_SS_STATS:
 282                 for (i = 0; i < ETHTOOL_STATS_NUM; i++) {
 283                         memcpy(data, et_stats[i].desc, ETH_GSTRING_LEN);
 284                         data += ETH_GSTRING_LEN;
 285                 }
 286                 break;
 287         }
 288 }
 289
 290 static int be_get_stats_count(struct net_device *netdev)
 291 {
 292         return ETHTOOL_STATS_NUM;
 293 }
 294
 295 static int be_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 296 {
 297         ecmd->speed = SPEED_10000;
 298         ecmd->duplex = DUPLEX_FULL;
 299         ecmd->autoneg = AUTONEG_DISABLE;
 300         return 0;
 301 }
 302
 303 static void
 304 be_get_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring)
 305 {
 306         struct be_adapter *adapter = netdev_priv(netdev);
 307
 308         ring->rx_max_pending = adapter->rx_obj.q.len;
 309         ring->tx_max_pending = adapter->tx_obj.q.len;
 310
 311         ring->rx_pending = atomic_read(&adapter->rx_obj.q.used);
 312         ring->tx_pending = atomic_read(&adapter->tx_obj.q.used);
 313 }
 314
 315 static void
 316 be_get_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *ecmd)
 317 {
 318         struct be_adapter *adapter = netdev_priv(netdev);
 319
 320         be_cmd_get_flow_control(&adapter->ctrl, &ecmd->tx_pause,
 321                 &ecmd->rx_pause);
 322         ecmd->autoneg = 0;
 323 }
 324
 325 static int
 326 be_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *ecmd)
 327 {
 328         struct be_adapter *adapter = netdev_priv(netdev);
 329         int status;
 330
 331         if (ecmd->autoneg != 0)
 332                 return -EINVAL;
 333
 334         status = be_cmd_set_flow_control(&adapter->ctrl, ecmd->tx_pause,
 335                         ecmd->rx_pause);
 336         if (!status)
 337                 dev_warn(&adapter->pdev->dev, "Pause param set failed.\n");
 338
 339         return status;
 340 }
 341
 342 struct ethtool_ops be_ethtool_ops = {
 343         .get_settings = be_get_settings,
 344         .get_drvinfo = be_get_drvinfo,
 345         .get_link = ethtool_op_get_link,
 346         .get_coalesce = be_get_coalesce,
 347         .set_coalesce = be_set_coalesce,
 348         .get_ringparam = be_get_ringparam,
 349         .get_pauseparam = be_get_pauseparam,
 350         .set_pauseparam = be_set_pauseparam,
 351         .get_rx_csum = be_get_rx_csum,
 352         .set_rx_csum = be_set_rx_csum,
 353         .get_tx_csum = ethtool_op_get_tx_csum,
 354         .set_tx_csum = ethtool_op_set_tx_csum,
 355         .get_sg = ethtool_op_get_sg,
 356         .set_sg = ethtool_op_set_sg,
 357         .get_tso = ethtool_op_get_tso,
 358         .set_tso = ethtool_op_set_tso,
 359         .get_strings = be_get_stat_strings,
 360         .get_stats_count = be_get_stats_count,
 361         .get_ethtool_stats = be_get_ethtool_stats,
 362 };