drivers/s390/net/qeth_ethtool.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright IBM Corp. 2018
   4  */
   5
   6 #define KMSG_COMPONENT "qeth"
   7 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
   8
   9 #include <linux/ethtool.h>
  10 #include "qeth_core.h"
  11
  12
  13 #define QETH_TXQ_STAT(_name, _stat) { \
  14         .name = _name, \
  15         .offset = offsetof(struct qeth_out_q_stats, _stat) \
  16 }
  17
  18 #define QETH_CARD_STAT(_name, _stat) { \
  19         .name = _name, \
  20         .offset = offsetof(struct qeth_card_stats, _stat) \
  21 }
  22
  23 struct qeth_stats {
  24         char name[ETH_GSTRING_LEN];
  25         unsigned int offset;
  26 };
  27
  28 static const struct qeth_stats txq_stats[] = {
  29         QETH_TXQ_STAT("IO buffers", bufs),
  30         QETH_TXQ_STAT("IO buffer elements", buf_elements),
  31         QETH_TXQ_STAT("packed IO buffers", bufs_pack),
  32         QETH_TXQ_STAT("skbs", tx_packets),
  33         QETH_TXQ_STAT("packed skbs", skbs_pack),
  34         QETH_TXQ_STAT("SG skbs", skbs_sg),
  35         QETH_TXQ_STAT("HW csum skbs", skbs_csum),
  36         QETH_TXQ_STAT("TSO skbs", skbs_tso),
  37         QETH_TXQ_STAT("linearized skbs", skbs_linearized),
  38         QETH_TXQ_STAT("linearized+error skbs", skbs_linearized_fail),
  39         QETH_TXQ_STAT("TSO bytes", tso_bytes),
  40         QETH_TXQ_STAT("Packing mode switches", packing_mode_switch),
  41         QETH_TXQ_STAT("Queue stopped", stopped),
  42         QETH_TXQ_STAT("Completion yield", completion_yield),
  43         QETH_TXQ_STAT("Completion timer", completion_timer),
  44 };
  45
  46 static const struct qeth_stats card_stats[] = {
  47         QETH_CARD_STAT("rx0 IO buffers", rx_bufs),
  48         QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),
  49         QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),
  50         QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),
  51         QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),
  52         QETH_CARD_STAT("rx0 dropped, no memory", rx_dropped_nomem),
  53         QETH_CARD_STAT("rx0 dropped, bad format", rx_dropped_notsupp),
  54         QETH_CARD_STAT("rx0 dropped, runt", rx_dropped_runt),
  55 };
  56
  57 #define TXQ_STATS_LEN   ARRAY_SIZE(txq_stats)
  58 #define CARD_STATS_LEN  ARRAY_SIZE(card_stats)
  59
  60 static void qeth_add_stat_data(u64 **dst, void *src,
  61                                const struct qeth_stats stats[],
  62                                unsigned int size)
  63 {
  64         unsigned int i;
  65         char *stat;
  66
  67         for (i = 0; i < size; i++) {
  68                 stat = (char *)src + stats[i].offset;
  69                 **dst = *(u64 *)stat;
  70                 (*dst)++;
  71         }
  72 }
  73
  74 static void qeth_add_stat_strings(u8 **data, const char *prefix,
  75                                   const struct qeth_stats stats[],
  76                                   unsigned int size)
  77 {
  78         unsigned int i;
  79
  80         for (i = 0; i < size; i++) {
  81                 snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name);
  82                 *data += ETH_GSTRING_LEN;
  83         }
  84 }
  85
  86 static int qeth_get_sset_count(struct net_device *dev, int stringset)
  87 {
  88         struct qeth_card *card = dev->ml_priv;
  89
  90         switch (stringset) {
  91         case ETH_SS_STATS:
  92                 return CARD_STATS_LEN +
  93                        card->qdio.no_out_queues * TXQ_STATS_LEN;
  94         default:
  95                 return -EINVAL;
  96         }
  97 }
  98
  99 static void qeth_get_ethtool_stats(struct net_device *dev,
 100                                    struct ethtool_stats *stats, u64 *data)
 101 {
 102         struct qeth_card *card = dev->ml_priv;
 103         unsigned int i;
 104
 105         qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);
 106         for (i = 0; i < card->qdio.no_out_queues; i++)
 107                 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,
 108                                    txq_stats, TXQ_STATS_LEN);
 109 }
 110
 111 static void qeth_get_ringparam(struct net_device *dev,
 112                                struct ethtool_ringparam *param)
 113 {
 114         struct qeth_card *card = dev->ml_priv;
 115
 116         param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
 117         param->rx_mini_max_pending = 0;
 118         param->rx_jumbo_max_pending = 0;
 119         param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
 120
 121         param->rx_pending = card->qdio.in_buf_pool.buf_count;
 122         param->rx_mini_pending = 0;
 123         param->rx_jumbo_pending = 0;
 124         param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;
 125 }
 126
 127 static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 128 {
 129         struct qeth_card *card = dev->ml_priv;
 130         char prefix[ETH_GSTRING_LEN] = "";
 131         unsigned int i;
 132
 133         switch (stringset) {
 134         case ETH_SS_STATS:
 135                 qeth_add_stat_strings(&data, prefix, card_stats,
 136                                       CARD_STATS_LEN);
 137                 for (i = 0; i < card->qdio.no_out_queues; i++) {
 138                         snprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);
 139                         qeth_add_stat_strings(&data, prefix, txq_stats,
 140                                               TXQ_STATS_LEN);
 141                 }
 142                 break;
 143         default:
 144                 WARN_ON(1);
 145                 break;
 146         }
 147 }
 148
 149 static void qeth_get_drvinfo(struct net_device *dev,
 150                              struct ethtool_drvinfo *info)
 151 {
 152         struct qeth_card *card = dev->ml_priv;
 153
 154         strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
 155                 sizeof(info->driver));
 156         strlcpy(info->version, "1.0", sizeof(info->version));
 157         strlcpy(info->fw_version, card->info.mcl_level,
 158                 sizeof(info->fw_version));
 159         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
 160                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
 161 }
 162
 163 static void qeth_get_channels(struct net_device *dev,
 164                               struct ethtool_channels *channels)
 165 {
 166         struct qeth_card *card = dev->ml_priv;
 167
 168         channels->max_rx = dev->num_rx_queues;
 169         channels->max_tx = card->qdio.no_out_queues;
 170         channels->max_other = 0;
 171         channels->max_combined = 0;
 172         channels->rx_count = dev->real_num_rx_queues;
 173         channels->tx_count = dev->real_num_tx_queues;
 174         channels->other_count = 0;
 175         channels->combined_count = 0;
 176 }
 177
 178 /* Helper function to fill 'advertising' and 'supported' which are the same. */
 179 /* Autoneg and full-duplex are supported and advertised unconditionally.     */
 180 /* Always advertise and support all speeds up to specified, and only one     */
 181 /* specified port type.                                                      */
 182 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
 183                                 int maxspeed, int porttype)
 184 {
 185         ethtool_link_ksettings_zero_link_mode(cmd, supported);
 186         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
 187         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
 188
 189         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
 190         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
 191
 192         switch (porttype) {
 193         case PORT_TP:
 194                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 195                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 196                 break;
 197         case PORT_FIBRE:
 198                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
 199                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
 200                 break;
 201         default:
 202                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 203                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 204                 WARN_ON_ONCE(1);
 205         }
 206
 207         /* partially does fall through, to also select lower speeds */
 208         switch (maxspeed) {
 209         case SPEED_25000:
 210                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 211                                                      25000baseSR_Full);
 212                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 213                                                      25000baseSR_Full);
 214                 break;
 215         case SPEED_10000:
 216                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 217                                                      10000baseT_Full);
 218                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 219                                                      10000baseT_Full);
 220                 /* fall through */
 221         case SPEED_1000:
 222                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 223                                                      1000baseT_Full);
 224                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 225                                                      1000baseT_Full);
 226                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 227                                                      1000baseT_Half);
 228                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 229                                                      1000baseT_Half);
 230                 /* fall through */
 231         case SPEED_100:
 232                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 233                                                      100baseT_Full);
 234                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 235                                                      100baseT_Full);
 236                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 237                                                      100baseT_Half);
 238                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 239                                                      100baseT_Half);
 240                 /* fall through */
 241         case SPEED_10:
 242                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 243                                                      10baseT_Full);
 244                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 245                                                      10baseT_Full);
 246                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 247                                                      10baseT_Half);
 248                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 249                                                      10baseT_Half);
 250                 break;
 251         default:
 252                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 253                                                      10baseT_Full);
 254                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 255                                                      10baseT_Full);
 256                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 257                                                      10baseT_Half);
 258                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 259                                                      10baseT_Half);
 260                 WARN_ON_ONCE(1);
 261         }
 262 }
 263
 264
 265 static int qeth_get_link_ksettings(struct net_device *netdev,
 266                                    struct ethtool_link_ksettings *cmd)
 267 {
 268         struct qeth_card *card = netdev->ml_priv;
 269         enum qeth_link_types link_type;
 270         struct carrier_info carrier_info;
 271         int rc;
 272
 273         if (IS_IQD(card) || IS_VM_NIC(card))
 274                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
 275         else
 276                 link_type = card->info.link_type;
 277
 278         cmd->base.duplex = DUPLEX_FULL;
 279         cmd->base.autoneg = AUTONEG_ENABLE;
 280         cmd->base.phy_address = 0;
 281         cmd->base.mdio_support = 0;
 282         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
 283         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
 284
 285         switch (link_type) {
 286         case QETH_LINK_TYPE_FAST_ETH:
 287         case QETH_LINK_TYPE_LANE_ETH100:
 288                 cmd->base.speed = SPEED_100;
 289                 cmd->base.port = PORT_TP;
 290                 break;
 291         case QETH_LINK_TYPE_GBIT_ETH:
 292         case QETH_LINK_TYPE_LANE_ETH1000:
 293                 cmd->base.speed = SPEED_1000;
 294                 cmd->base.port = PORT_FIBRE;
 295                 break;
 296         case QETH_LINK_TYPE_10GBIT_ETH:
 297                 cmd->base.speed = SPEED_10000;
 298                 cmd->base.port = PORT_FIBRE;
 299                 break;
 300         case QETH_LINK_TYPE_25GBIT_ETH:
 301                 cmd->base.speed = SPEED_25000;
 302                 cmd->base.port = PORT_FIBRE;
 303                 break;
 304         default:
 305                 cmd->base.speed = SPEED_10;
 306                 cmd->base.port = PORT_TP;
 307         }
 308         qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
 309
 310         /* Check if we can obtain more accurate information.     */
 311         /* If QUERY_CARD_INFO command is not supported or fails, */
 312         /* just return the heuristics that was filled above.     */
 313         rc = qeth_query_card_info(card, &carrier_info);
 314         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
 315                 return 0;
 316         if (rc) /* report error from the hardware operation */
 317                 return rc;
 318         /* on success, fill in the information got from the hardware */
 319
 320         netdev_dbg(netdev,
 321         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
 322                         carrier_info.card_type,
 323                         carrier_info.port_mode,
 324                         carrier_info.port_speed);
 325
 326         /* Update attributes for which we've obtained more authoritative */
 327         /* information, leave the rest the way they where filled above.  */
 328         switch (carrier_info.card_type) {
 329         case CARD_INFO_TYPE_1G_COPPER_A:
 330         case CARD_INFO_TYPE_1G_COPPER_B:
 331                 cmd->base.port = PORT_TP;
 332                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
 333                 break;
 334         case CARD_INFO_TYPE_1G_FIBRE_A:
 335         case CARD_INFO_TYPE_1G_FIBRE_B:
 336                 cmd->base.port = PORT_FIBRE;
 337                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
 338                 break;
 339         case CARD_INFO_TYPE_10G_FIBRE_A:
 340         case CARD_INFO_TYPE_10G_FIBRE_B:
 341                 cmd->base.port = PORT_FIBRE;
 342                 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
 343                 break;
 344         }
 345
 346         switch (carrier_info.port_mode) {
 347         case CARD_INFO_PORTM_FULLDUPLEX:
 348                 cmd->base.duplex = DUPLEX_FULL;
 349                 break;
 350         case CARD_INFO_PORTM_HALFDUPLEX:
 351                 cmd->base.duplex = DUPLEX_HALF;
 352                 break;
 353         }
 354
 355         switch (carrier_info.port_speed) {
 356         case CARD_INFO_PORTS_10M:
 357                 cmd->base.speed = SPEED_10;
 358                 break;
 359         case CARD_INFO_PORTS_100M:
 360                 cmd->base.speed = SPEED_100;
 361                 break;
 362         case CARD_INFO_PORTS_1G:
 363                 cmd->base.speed = SPEED_1000;
 364                 break;
 365         case CARD_INFO_PORTS_10G:
 366                 cmd->base.speed = SPEED_10000;
 367                 break;
 368         case CARD_INFO_PORTS_25G:
 369                 cmd->base.speed = SPEED_25000;
 370                 break;
 371         }
 372
 373         return 0;
 374 }
 375
 376 const struct ethtool_ops qeth_ethtool_ops = {
 377         .get_link = ethtool_op_get_link,
 378         .get_ringparam = qeth_get_ringparam,
 379         .get_strings = qeth_get_strings,
 380         .get_ethtool_stats = qeth_get_ethtool_stats,
 381         .get_sset_count = qeth_get_sset_count,
 382         .get_drvinfo = qeth_get_drvinfo,
 383         .get_channels = qeth_get_channels,
 384         .get_link_ksettings = qeth_get_link_ksettings,
 385 };
 386
 387 const struct ethtool_ops qeth_osn_ethtool_ops = {
 388         .get_strings = qeth_get_strings,
 389         .get_ethtool_stats = qeth_get_ethtool_stats,
 390         .get_sset_count = qeth_get_sset_count,
 391         .get_drvinfo = qeth_get_drvinfo,
 392 };