drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c

   1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
   2 /* Copyright 2014-2016 Freescale Semiconductor Inc.
   3  * Copyright 2016 NXP
   4  */
   5
   6 #include <linux/net_tstamp.h>
   7 #include <linux/nospec.h>
   8
   9 #include "dpni.h"       /* DPNI_LINK_OPT_* */
  10 #include "dpaa2-eth.h"
  11
  12 /* To be kept in sync with DPNI statistics */
  13 static char dpaa2_ethtool_stats[][ETH_GSTRING_LEN] = {
  14         "[hw] rx frames",
  15         "[hw] rx bytes",
  16         "[hw] rx mcast frames",
  17         "[hw] rx mcast bytes",
  18         "[hw] rx bcast frames",
  19         "[hw] rx bcast bytes",
  20         "[hw] tx frames",
  21         "[hw] tx bytes",
  22         "[hw] tx mcast frames",
  23         "[hw] tx mcast bytes",
  24         "[hw] tx bcast frames",
  25         "[hw] tx bcast bytes",
  26         "[hw] rx filtered frames",
  27         "[hw] rx discarded frames",
  28         "[hw] rx nobuffer discards",
  29         "[hw] tx discarded frames",
  30         "[hw] tx confirmed frames",
  31         "[hw] tx dequeued bytes",
  32         "[hw] tx dequeued frames",
  33         "[hw] tx rejected bytes",
  34         "[hw] tx rejected frames",
  35         "[hw] tx pending frames",
  36 };
  37
  38 #define DPAA2_ETH_NUM_STATS     ARRAY_SIZE(dpaa2_ethtool_stats)
  39
  40 static char dpaa2_ethtool_extras[][ETH_GSTRING_LEN] = {
  41         /* per-cpu stats */
  42         "[drv] tx conf frames",
  43         "[drv] tx conf bytes",
  44         "[drv] tx sg frames",
  45         "[drv] tx sg bytes",
  46         "[drv] tx realloc frames",
  47         "[drv] rx sg frames",
  48         "[drv] rx sg bytes",
  49         "[drv] enqueue portal busy",
  50         /* Channel stats */
  51         "[drv] dequeue portal busy",
  52         "[drv] channel pull errors",
  53         "[drv] cdan",
  54         "[drv] xdp drop",
  55         "[drv] xdp tx",
  56         "[drv] xdp tx errors",
  57         "[drv] xdp redirect",
  58         /* FQ stats */
  59         "[qbman] rx pending frames",
  60         "[qbman] rx pending bytes",
  61         "[qbman] tx conf pending frames",
  62         "[qbman] tx conf pending bytes",
  63         "[qbman] buffer count",
  64 };
  65
  66 #define DPAA2_ETH_NUM_EXTRA_STATS       ARRAY_SIZE(dpaa2_ethtool_extras)
  67
  68 static void dpaa2_eth_get_drvinfo(struct net_device *net_dev,
  69                                   struct ethtool_drvinfo *drvinfo)
  70 {
  71         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
  72
  73         strlcpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
  74
  75         snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
  76                  "%u.%u", priv->dpni_ver_major, priv->dpni_ver_minor);
  77
  78         strlcpy(drvinfo->bus_info, dev_name(net_dev->dev.parent->parent),
  79                 sizeof(drvinfo->bus_info));
  80 }
  81
  82 static int dpaa2_eth_nway_reset(struct net_device *net_dev)
  83 {
  84         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
  85
  86         if (priv->mac)
  87                 return phylink_ethtool_nway_reset(priv->mac->phylink);
  88
  89         return -EOPNOTSUPP;
  90 }
  91
  92 static int
  93 dpaa2_eth_get_link_ksettings(struct net_device *net_dev,
  94                              struct ethtool_link_ksettings *link_settings)
  95 {
  96         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
  97
  98         if (priv->mac)
  99                 return phylink_ethtool_ksettings_get(priv->mac->phylink,
 100                                                      link_settings);
 101
 102         link_settings->base.autoneg = AUTONEG_DISABLE;
 103         if (!(priv->link_state.options & DPNI_LINK_OPT_HALF_DUPLEX))
 104                 link_settings->base.duplex = DUPLEX_FULL;
 105         link_settings->base.speed = priv->link_state.rate;
 106
 107         return 0;
 108 }
 109
 110 static int
 111 dpaa2_eth_set_link_ksettings(struct net_device *net_dev,
 112                              const struct ethtool_link_ksettings *link_settings)
 113 {
 114         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 115
 116         if (!priv->mac)
 117                 return -ENOTSUPP;
 118
 119         return phylink_ethtool_ksettings_set(priv->mac->phylink, link_settings);
 120 }
 121
 122 static void dpaa2_eth_get_pauseparam(struct net_device *net_dev,
 123                                      struct ethtool_pauseparam *pause)
 124 {
 125         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 126         u64 link_options = priv->link_state.options;
 127
 128         if (priv->mac) {
 129                 phylink_ethtool_get_pauseparam(priv->mac->phylink, pause);
 130                 return;
 131         }
 132
 133         pause->rx_pause = !!(link_options & DPNI_LINK_OPT_PAUSE);
 134         pause->tx_pause = pause->rx_pause ^
 135                           !!(link_options & DPNI_LINK_OPT_ASYM_PAUSE);
 136         pause->autoneg = AUTONEG_DISABLE;
 137 }
 138
 139 static int dpaa2_eth_set_pauseparam(struct net_device *net_dev,
 140                                     struct ethtool_pauseparam *pause)
 141 {
 142         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 143         struct dpni_link_cfg cfg = {0};
 144         int err;
 145
 146         if (!dpaa2_eth_has_pause_support(priv)) {
 147                 netdev_info(net_dev, "No pause frame support for DPNI version < %d.%d\n",
 148                             DPNI_PAUSE_VER_MAJOR, DPNI_PAUSE_VER_MINOR);
 149                 return -EOPNOTSUPP;
 150         }
 151
 152         if (priv->mac)
 153                 return phylink_ethtool_set_pauseparam(priv->mac->phylink,
 154                                                       pause);
 155         if (pause->autoneg)
 156                 return -EOPNOTSUPP;
 157
 158         cfg.rate = priv->link_state.rate;
 159         cfg.options = priv->link_state.options;
 160         if (pause->rx_pause)
 161                 cfg.options |= DPNI_LINK_OPT_PAUSE;
 162         else
 163                 cfg.options &= ~DPNI_LINK_OPT_PAUSE;
 164         if (!!pause->rx_pause ^ !!pause->tx_pause)
 165                 cfg.options |= DPNI_LINK_OPT_ASYM_PAUSE;
 166         else
 167                 cfg.options &= ~DPNI_LINK_OPT_ASYM_PAUSE;
 168
 169         if (cfg.options == priv->link_state.options)
 170                 return 0;
 171
 172         err = dpni_set_link_cfg(priv->mc_io, 0, priv->mc_token, &cfg);
 173         if (err) {
 174                 netdev_err(net_dev, "dpni_set_link_state failed\n");
 175                 return err;
 176         }
 177
 178         priv->link_state.options = cfg.options;
 179
 180         return 0;
 181 }
 182
 183 static void dpaa2_eth_get_strings(struct net_device *netdev, u32 stringset,
 184                                   u8 *data)
 185 {
 186         struct dpaa2_eth_priv *priv = netdev_priv(netdev);
 187         u8 *p = data;
 188         int i;
 189
 190         switch (stringset) {
 191         case ETH_SS_STATS:
 192                 for (i = 0; i < DPAA2_ETH_NUM_STATS; i++) {
 193                         strlcpy(p, dpaa2_ethtool_stats[i], ETH_GSTRING_LEN);
 194                         p += ETH_GSTRING_LEN;
 195                 }
 196                 for (i = 0; i < DPAA2_ETH_NUM_EXTRA_STATS; i++) {
 197                         strlcpy(p, dpaa2_ethtool_extras[i], ETH_GSTRING_LEN);
 198                         p += ETH_GSTRING_LEN;
 199                 }
 200                 if (priv->mac)
 201                         dpaa2_mac_get_strings(p);
 202                 break;
 203         }
 204 }
 205
 206 static int dpaa2_eth_get_sset_count(struct net_device *net_dev, int sset)
 207 {
 208         int num_ss_stats = DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS;
 209         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 210
 211         switch (sset) {
 212         case ETH_SS_STATS: /* ethtool_get_stats(), ethtool_get_drvinfo() */
 213                 if (priv->mac)
 214                         num_ss_stats += dpaa2_mac_get_sset_count();
 215                 return num_ss_stats;
 216         default:
 217                 return -EOPNOTSUPP;
 218         }
 219 }
 220
 221 /** Fill in hardware counters, as returned by MC.
 222  */
 223 static void dpaa2_eth_get_ethtool_stats(struct net_device *net_dev,
 224                                         struct ethtool_stats *stats,
 225                                         u64 *data)
 226 {
 227         int i = 0;
 228         int j, k, err;
 229         int num_cnt;
 230         union dpni_statistics dpni_stats;
 231         u32 fcnt, bcnt;
 232         u32 fcnt_rx_total = 0, fcnt_tx_total = 0;
 233         u32 bcnt_rx_total = 0, bcnt_tx_total = 0;
 234         u32 buf_cnt;
 235         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 236         struct dpaa2_eth_drv_stats *extras;
 237         struct dpaa2_eth_ch_stats *ch_stats;
 238         int dpni_stats_page_size[DPNI_STATISTICS_CNT] = {
 239                 sizeof(dpni_stats.page_0),
 240                 sizeof(dpni_stats.page_1),
 241                 sizeof(dpni_stats.page_2),
 242                 sizeof(dpni_stats.page_3),
 243                 sizeof(dpni_stats.page_4),
 244                 sizeof(dpni_stats.page_5),
 245                 sizeof(dpni_stats.page_6),
 246         };
 247
 248         memset(data, 0,
 249                sizeof(u64) * (DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS));
 250
 251         /* Print standard counters, from DPNI statistics */
 252         for (j = 0; j <= 6; j++) {
 253                 /* We're not interested in pages 4 & 5 for now */
 254                 if (j == 4 || j == 5)
 255                         continue;
 256                 err = dpni_get_statistics(priv->mc_io, 0, priv->mc_token,
 257                                           j, &dpni_stats);
 258                 if (err == -EINVAL)
 259                         /* Older firmware versions don't support all pages */
 260                         memset(&dpni_stats, 0, sizeof(dpni_stats));
 261                 else if (err)
 262                         netdev_warn(net_dev, "dpni_get_stats(%d) failed\n", j);
 263
 264                 num_cnt = dpni_stats_page_size[j] / sizeof(u64);
 265                 for (k = 0; k < num_cnt; k++)
 266                         *(data + i++) = dpni_stats.raw.counter[k];
 267         }
 268
 269         /* Print per-cpu extra stats */
 270         for_each_online_cpu(k) {
 271                 extras = per_cpu_ptr(priv->percpu_extras, k);
 272                 for (j = 0; j < sizeof(*extras) / sizeof(__u64); j++)
 273                         *((__u64 *)data + i + j) += *((__u64 *)extras + j);
 274         }
 275         i += j;
 276
 277         /* Per-channel stats */
 278         for (k = 0; k < priv->num_channels; k++) {
 279                 ch_stats = &priv->channel[k]->stats;
 280                 for (j = 0; j < sizeof(*ch_stats) / sizeof(__u64); j++)
 281                         *((__u64 *)data + i + j) += *((__u64 *)ch_stats + j);
 282         }
 283         i += j;
 284
 285         for (j = 0; j < priv->num_fqs; j++) {
 286                 /* Print FQ instantaneous counts */
 287                 err = dpaa2_io_query_fq_count(NULL, priv->fq[j].fqid,
 288                                               &fcnt, &bcnt);
 289                 if (err) {
 290                         netdev_warn(net_dev, "FQ query error %d", err);
 291                         return;
 292                 }
 293
 294                 if (priv->fq[j].type == DPAA2_TX_CONF_FQ) {
 295                         fcnt_tx_total += fcnt;
 296                         bcnt_tx_total += bcnt;
 297                 } else {
 298                         fcnt_rx_total += fcnt;
 299                         bcnt_rx_total += bcnt;
 300                 }
 301         }
 302
 303         *(data + i++) = fcnt_rx_total;
 304         *(data + i++) = bcnt_rx_total;
 305         *(data + i++) = fcnt_tx_total;
 306         *(data + i++) = bcnt_tx_total;
 307
 308         err = dpaa2_io_query_bp_count(NULL, priv->bpid, &buf_cnt);
 309         if (err) {
 310                 netdev_warn(net_dev, "Buffer count query error %d\n", err);
 311                 return;
 312         }
 313         *(data + i++) = buf_cnt;
 314
 315         if (priv->mac)
 316                 dpaa2_mac_get_ethtool_stats(priv->mac, data + i);
 317 }
 318
 319 static int prep_eth_rule(struct ethhdr *eth_value, struct ethhdr *eth_mask,
 320                          void *key, void *mask, u64 *fields)
 321 {
 322         int off;
 323
 324         if (eth_mask->h_proto) {
 325                 off = dpaa2_eth_cls_fld_off(NET_PROT_ETH, NH_FLD_ETH_TYPE);
 326                 *(__be16 *)(key + off) = eth_value->h_proto;
 327                 *(__be16 *)(mask + off) = eth_mask->h_proto;
 328                 *fields |= DPAA2_ETH_DIST_ETHTYPE;
 329         }
 330
 331         if (!is_zero_ether_addr(eth_mask->h_source)) {
 332                 off = dpaa2_eth_cls_fld_off(NET_PROT_ETH, NH_FLD_ETH_SA);
 333                 ether_addr_copy(key + off, eth_value->h_source);
 334                 ether_addr_copy(mask + off, eth_mask->h_source);
 335                 *fields |= DPAA2_ETH_DIST_ETHSRC;
 336         }
 337
 338         if (!is_zero_ether_addr(eth_mask->h_dest)) {
 339                 off = dpaa2_eth_cls_fld_off(NET_PROT_ETH, NH_FLD_ETH_DA);
 340                 ether_addr_copy(key + off, eth_value->h_dest);
 341                 ether_addr_copy(mask + off, eth_mask->h_dest);
 342                 *fields |= DPAA2_ETH_DIST_ETHDST;
 343         }
 344
 345         return 0;
 346 }
 347
 348 static int prep_uip_rule(struct ethtool_usrip4_spec *uip_value,
 349                          struct ethtool_usrip4_spec *uip_mask,
 350                          void *key, void *mask, u64 *fields)
 351 {
 352         int off;
 353         u32 tmp_value, tmp_mask;
 354
 355         if (uip_mask->tos || uip_mask->ip_ver)
 356                 return -EOPNOTSUPP;
 357
 358         if (uip_mask->ip4src) {
 359                 off = dpaa2_eth_cls_fld_off(NET_PROT_IP, NH_FLD_IP_SRC);
 360                 *(__be32 *)(key + off) = uip_value->ip4src;
 361                 *(__be32 *)(mask + off) = uip_mask->ip4src;
 362                 *fields |= DPAA2_ETH_DIST_IPSRC;
 363         }
 364
 365         if (uip_mask->ip4dst) {
 366                 off = dpaa2_eth_cls_fld_off(NET_PROT_IP, NH_FLD_IP_DST);
 367                 *(__be32 *)(key + off) = uip_value->ip4dst;
 368                 *(__be32 *)(mask + off) = uip_mask->ip4dst;
 369                 *fields |= DPAA2_ETH_DIST_IPDST;
 370         }
 371
 372         if (uip_mask->proto) {
 373                 off = dpaa2_eth_cls_fld_off(NET_PROT_IP, NH_FLD_IP_PROTO);
 374                 *(u8 *)(key + off) = uip_value->proto;
 375                 *(u8 *)(mask + off) = uip_mask->proto;
 376                 *fields |= DPAA2_ETH_DIST_IPPROTO;
 377         }
 378
 379         if (uip_mask->l4_4_bytes) {
 380                 tmp_value = be32_to_cpu(uip_value->l4_4_bytes);
 381                 tmp_mask = be32_to_cpu(uip_mask->l4_4_bytes);
 382
 383                 off = dpaa2_eth_cls_fld_off(NET_PROT_UDP, NH_FLD_UDP_PORT_SRC);
 384                 *(__be16 *)(key + off) = htons(tmp_value >> 16);
 385                 *(__be16 *)(mask + off) = htons(tmp_mask >> 16);
 386                 *fields |= DPAA2_ETH_DIST_L4SRC;
 387
 388                 off = dpaa2_eth_cls_fld_off(NET_PROT_UDP, NH_FLD_UDP_PORT_DST);
 389                 *(__be16 *)(key + off) = htons(tmp_value & 0xFFFF);
 390                 *(__be16 *)(mask + off) = htons(tmp_mask & 0xFFFF);
 391                 *fields |= DPAA2_ETH_DIST_L4DST;
 392         }
 393
 394         /* Only apply the rule for IPv4 frames */
 395         off = dpaa2_eth_cls_fld_off(NET_PROT_ETH, NH_FLD_ETH_TYPE);
 396         *(__be16 *)(key + off) = htons(ETH_P_IP);
 397         *(__be16 *)(mask + off) = htons(0xFFFF);
 398         *fields |= DPAA2_ETH_DIST_ETHTYPE;
 399
 400         return 0;
 401 }
 402
 403 static int prep_l4_rule(struct ethtool_tcpip4_spec *l4_value,
 404                         struct ethtool_tcpip4_spec *l4_mask,
 405                         void *key, void *mask, u8 l4_proto, u64 *fields)
 406 {
 407         int off;
 408
 409         if (l4_mask->tos)
 410                 return -EOPNOTSUPP;
 411
 412         if (l4_mask->ip4src) {
 413                 off = dpaa2_eth_cls_fld_off(NET_PROT_IP, NH_FLD_IP_SRC);
 414                 *(__be32 *)(key + off) = l4_value->ip4src;
 415                 *(__be32 *)(mask + off) = l4_mask->ip4src;
 416                 *fields |= DPAA2_ETH_DIST_IPSRC;
 417         }
 418
 419         if (l4_mask->ip4dst) {
 420                 off = dpaa2_eth_cls_fld_off(NET_PROT_IP, NH_FLD_IP_DST);
 421                 *(__be32 *)(key + off) = l4_value->ip4dst;
 422                 *(__be32 *)(mask + off) = l4_mask->ip4dst;
 423                 *fields |= DPAA2_ETH_DIST_IPDST;
 424         }
 425
 426         if (l4_mask->psrc) {
 427                 off = dpaa2_eth_cls_fld_off(NET_PROT_UDP, NH_FLD_UDP_PORT_SRC);
 428                 *(__be16 *)(key + off) = l4_value->psrc;
 429                 *(__be16 *)(mask + off) = l4_mask->psrc;
 430                 *fields |= DPAA2_ETH_DIST_L4SRC;
 431         }
 432
 433         if (l4_mask->pdst) {
 434                 off = dpaa2_eth_cls_fld_off(NET_PROT_UDP, NH_FLD_UDP_PORT_DST);
 435                 *(__be16 *)(key + off) = l4_value->pdst;
 436                 *(__be16 *)(mask + off) = l4_mask->pdst;
 437                 *fields |= DPAA2_ETH_DIST_L4DST;
 438         }
 439
 440         /* Only apply the rule for IPv4 frames with the specified L4 proto */
 441         off = dpaa2_eth_cls_fld_off(NET_PROT_ETH, NH_FLD_ETH_TYPE);
 442         *(__be16 *)(key + off) = htons(ETH_P_IP);
 443         *(__be16 *)(mask + off) = htons(0xFFFF);
 444         *fields |= DPAA2_ETH_DIST_ETHTYPE;
 445
 446         off = dpaa2_eth_cls_fld_off(NET_PROT_IP, NH_FLD_IP_PROTO);
 447         *(u8 *)(key + off) = l4_proto;
 448         *(u8 *)(mask + off) = 0xFF;
 449         *fields |= DPAA2_ETH_DIST_IPPROTO;
 450
 451         return 0;
 452 }
 453
 454 static int prep_ext_rule(struct ethtool_flow_ext *ext_value,
 455                          struct ethtool_flow_ext *ext_mask,
 456                          void *key, void *mask, u64 *fields)
 457 {
 458         int off;
 459
 460         if (ext_mask->vlan_etype)
 461                 return -EOPNOTSUPP;
 462
 463         if (ext_mask->vlan_tci) {
 464                 off = dpaa2_eth_cls_fld_off(NET_PROT_VLAN, NH_FLD_VLAN_TCI);
 465                 *(__be16 *)(key + off) = ext_value->vlan_tci;
 466                 *(__be16 *)(mask + off) = ext_mask->vlan_tci;
 467                 *fields |= DPAA2_ETH_DIST_VLAN;
 468         }
 469
 470         return 0;
 471 }
 472
 473 static int prep_mac_ext_rule(struct ethtool_flow_ext *ext_value,
 474                              struct ethtool_flow_ext *ext_mask,
 475                              void *key, void *mask, u64 *fields)
 476 {
 477         int off;
 478
 479         if (!is_zero_ether_addr(ext_mask->h_dest)) {
 480                 off = dpaa2_eth_cls_fld_off(NET_PROT_ETH, NH_FLD_ETH_DA);
 481                 ether_addr_copy(key + off, ext_value->h_dest);
 482                 ether_addr_copy(mask + off, ext_mask->h_dest);
 483                 *fields |= DPAA2_ETH_DIST_ETHDST;
 484         }
 485
 486         return 0;
 487 }
 488
 489 static int prep_cls_rule(struct ethtool_rx_flow_spec *fs, void *key, void *mask,
 490                          u64 *fields)
 491 {
 492         int err;
 493
 494         switch (fs->flow_type & 0xFF) {
 495         case ETHER_FLOW:
 496                 err = prep_eth_rule(&fs->h_u.ether_spec, &fs->m_u.ether_spec,
 497                                     key, mask, fields);
 498                 break;
 499         case IP_USER_FLOW:
 500                 err = prep_uip_rule(&fs->h_u.usr_ip4_spec,
 501                                     &fs->m_u.usr_ip4_spec, key, mask, fields);
 502                 break;
 503         case TCP_V4_FLOW:
 504                 err = prep_l4_rule(&fs->h_u.tcp_ip4_spec, &fs->m_u.tcp_ip4_spec,
 505                                    key, mask, IPPROTO_TCP, fields);
 506                 break;
 507         case UDP_V4_FLOW:
 508                 err = prep_l4_rule(&fs->h_u.udp_ip4_spec, &fs->m_u.udp_ip4_spec,
 509                                    key, mask, IPPROTO_UDP, fields);
 510                 break;
 511         case SCTP_V4_FLOW:
 512                 err = prep_l4_rule(&fs->h_u.sctp_ip4_spec,
 513                                    &fs->m_u.sctp_ip4_spec, key, mask,
 514                                    IPPROTO_SCTP, fields);
 515                 break;
 516         default:
 517                 return -EOPNOTSUPP;
 518         }
 519
 520         if (err)
 521                 return err;
 522
 523         if (fs->flow_type & FLOW_EXT) {
 524                 err = prep_ext_rule(&fs->h_ext, &fs->m_ext, key, mask, fields);
 525                 if (err)
 526                         return err;
 527         }
 528
 529         if (fs->flow_type & FLOW_MAC_EXT) {
 530                 err = prep_mac_ext_rule(&fs->h_ext, &fs->m_ext, key, mask,
 531                                         fields);
 532                 if (err)
 533                         return err;
 534         }
 535
 536         return 0;
 537 }
 538
 539 static int do_cls_rule(struct net_device *net_dev,
 540                        struct ethtool_rx_flow_spec *fs,
 541                        bool add)
 542 {
 543         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 544         struct device *dev = net_dev->dev.parent;
 545         struct dpni_rule_cfg rule_cfg = { 0 };
 546         struct dpni_fs_action_cfg fs_act = { 0 };
 547         dma_addr_t key_iova;
 548         u64 fields = 0;
 549         void *key_buf;
 550         int err;
 551
 552         if (fs->ring_cookie != RX_CLS_FLOW_DISC &&
 553             fs->ring_cookie >= dpaa2_eth_queue_count(priv))
 554                 return -EINVAL;
 555
 556         rule_cfg.key_size = dpaa2_eth_cls_key_size(DPAA2_ETH_DIST_ALL);
 557
 558         /* allocate twice the key size, for the actual key and for mask */
 559         key_buf = kzalloc(rule_cfg.key_size * 2, GFP_KERNEL);
 560         if (!key_buf)
 561                 return -ENOMEM;
 562
 563         /* Fill the key and mask memory areas */
 564         err = prep_cls_rule(fs, key_buf, key_buf + rule_cfg.key_size, &fields);
 565         if (err)
 566                 goto free_mem;
 567
 568         if (!dpaa2_eth_fs_mask_enabled(priv)) {
 569                 /* Masking allows us to configure a maximal key during init and
 570                  * use it for all flow steering rules. Without it, we include
 571                  * in the key only the fields actually used, so we need to
 572                  * extract the others from the final key buffer.
 573                  *
 574                  * Program the FS key if needed, or return error if previously
 575                  * set key can't be used for the current rule. User needs to
 576                  * delete existing rules in this case to allow for the new one.
 577                  */
 578                 if (!priv->rx_cls_fields) {
 579                         err = dpaa2_eth_set_cls(net_dev, fields);
 580                         if (err)
 581                                 goto free_mem;
 582
 583                         priv->rx_cls_fields = fields;
 584                 } else if (priv->rx_cls_fields != fields) {
 585                         netdev_err(net_dev, "No support for multiple FS keys, need to delete existing rules\n");
 586                         err = -EOPNOTSUPP;
 587                         goto free_mem;
 588                 }
 589
 590                 dpaa2_eth_cls_trim_rule(key_buf, fields);
 591                 rule_cfg.key_size = dpaa2_eth_cls_key_size(fields);
 592         }
 593
 594         key_iova = dma_map_single(dev, key_buf, rule_cfg.key_size * 2,
 595                                   DMA_TO_DEVICE);
 596         if (dma_mapping_error(dev, key_iova)) {
 597                 err = -ENOMEM;
 598                 goto free_mem;
 599         }
 600
 601         rule_cfg.key_iova = key_iova;
 602         if (dpaa2_eth_fs_mask_enabled(priv))
 603                 rule_cfg.mask_iova = key_iova + rule_cfg.key_size;
 604
 605         if (add) {
 606                 if (fs->ring_cookie == RX_CLS_FLOW_DISC)
 607                         fs_act.options |= DPNI_FS_OPT_DISCARD;
 608                 else
 609                         fs_act.flow_id = fs->ring_cookie;
 610                 err = dpni_add_fs_entry(priv->mc_io, 0, priv->mc_token, 0,
 611                                         fs->location, &rule_cfg, &fs_act);
 612         } else {
 613                 err = dpni_remove_fs_entry(priv->mc_io, 0, priv->mc_token, 0,
 614                                            &rule_cfg);
 615         }
 616
 617         dma_unmap_single(dev, key_iova, rule_cfg.key_size * 2, DMA_TO_DEVICE);
 618
 619 free_mem:
 620         kfree(key_buf);
 621
 622         return err;
 623 }
 624
 625 static int num_rules(struct dpaa2_eth_priv *priv)
 626 {
 627         int i, rules = 0;
 628
 629         for (i = 0; i < dpaa2_eth_fs_count(priv); i++)
 630                 if (priv->cls_rules[i].in_use)
 631                         rules++;
 632
 633         return rules;
 634 }
 635
 636 static int update_cls_rule(struct net_device *net_dev,
 637                            struct ethtool_rx_flow_spec *new_fs,
 638                            int location)
 639 {
 640         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 641         struct dpaa2_eth_cls_rule *rule;
 642         int err = -EINVAL;
 643
 644         if (!priv->rx_cls_enabled)
 645                 return -EOPNOTSUPP;
 646
 647         if (location >= dpaa2_eth_fs_count(priv))
 648                 return -EINVAL;
 649
 650         rule = &priv->cls_rules[location];
 651
 652         /* If a rule is present at the specified location, delete it. */
 653         if (rule->in_use) {
 654                 err = do_cls_rule(net_dev, &rule->fs, false);
 655                 if (err)
 656                         return err;
 657
 658                 rule->in_use = 0;
 659
 660                 if (!dpaa2_eth_fs_mask_enabled(priv) && !num_rules(priv))
 661                         priv->rx_cls_fields = 0;
 662         }
 663
 664         /* If no new entry to add, return here */
 665         if (!new_fs)
 666                 return err;
 667
 668         err = do_cls_rule(net_dev, new_fs, true);
 669         if (err)
 670                 return err;
 671
 672         rule->in_use = 1;
 673         rule->fs = *new_fs;
 674
 675         return 0;
 676 }
 677
 678 static int dpaa2_eth_get_rxnfc(struct net_device *net_dev,
 679                                struct ethtool_rxnfc *rxnfc, u32 *rule_locs)
 680 {
 681         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 682         int max_rules = dpaa2_eth_fs_count(priv);
 683         int i, j = 0;
 684
 685         switch (rxnfc->cmd) {
 686         case ETHTOOL_GRXFH:
 687                 /* we purposely ignore cmd->flow_type for now, because the
 688                  * classifier only supports a single set of fields for all
 689                  * protocols
 690                  */
 691                 rxnfc->data = priv->rx_hash_fields;
 692                 break;
 693         case ETHTOOL_GRXRINGS:
 694                 rxnfc->data = dpaa2_eth_queue_count(priv);
 695                 break;
 696         case ETHTOOL_GRXCLSRLCNT:
 697                 rxnfc->rule_cnt = 0;
 698                 rxnfc->rule_cnt = num_rules(priv);
 699                 rxnfc->data = max_rules;
 700                 break;
 701         case ETHTOOL_GRXCLSRULE:
 702                 if (rxnfc->fs.location >= max_rules)
 703                         return -EINVAL;
 704                 rxnfc->fs.location = array_index_nospec(rxnfc->fs.location,
 705                                                         max_rules);
 706                 if (!priv->cls_rules[rxnfc->fs.location].in_use)
 707                         return -EINVAL;
 708                 rxnfc->fs = priv->cls_rules[rxnfc->fs.location].fs;
 709                 break;
 710         case ETHTOOL_GRXCLSRLALL:
 711                 for (i = 0; i < max_rules; i++) {
 712                         if (!priv->cls_rules[i].in_use)
 713                                 continue;
 714                         if (j == rxnfc->rule_cnt)
 715                                 return -EMSGSIZE;
 716                         rule_locs[j++] = i;
 717                 }
 718                 rxnfc->rule_cnt = j;
 719                 rxnfc->data = max_rules;
 720                 break;
 721         default:
 722                 return -EOPNOTSUPP;
 723         }
 724
 725         return 0;
 726 }
 727
 728 static int dpaa2_eth_set_rxnfc(struct net_device *net_dev,
 729                                struct ethtool_rxnfc *rxnfc)
 730 {
 731         int err = 0;
 732
 733         switch (rxnfc->cmd) {
 734         case ETHTOOL_SRXFH:
 735                 if ((rxnfc->data & DPAA2_RXH_SUPPORTED) != rxnfc->data)
 736                         return -EOPNOTSUPP;
 737                 err = dpaa2_eth_set_hash(net_dev, rxnfc->data);
 738                 break;
 739         case ETHTOOL_SRXCLSRLINS:
 740                 err = update_cls_rule(net_dev, &rxnfc->fs, rxnfc->fs.location);
 741                 break;
 742         case ETHTOOL_SRXCLSRLDEL:
 743                 err = update_cls_rule(net_dev, NULL, rxnfc->fs.location);
 744                 break;
 745         default:
 746                 err = -EOPNOTSUPP;
 747         }
 748
 749         return err;
 750 }
 751
 752 int dpaa2_phc_index = -1;
 753 EXPORT_SYMBOL(dpaa2_phc_index);
 754
 755 static int dpaa2_eth_get_ts_info(struct net_device *dev,
 756                                  struct ethtool_ts_info *info)
 757 {
 758         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
 759                                 SOF_TIMESTAMPING_RX_HARDWARE |
 760                                 SOF_TIMESTAMPING_RAW_HARDWARE;
 761
 762         info->phc_index = dpaa2_phc_index;
 763
 764         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
 765                          (1 << HWTSTAMP_TX_ON);
 766
 767         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
 768                            (1 << HWTSTAMP_FILTER_ALL);
 769         return 0;
 770 }
 771
 772 const struct ethtool_ops dpaa2_ethtool_ops = {
 773         .get_drvinfo = dpaa2_eth_get_drvinfo,
 774         .nway_reset = dpaa2_eth_nway_reset,
 775         .get_link = ethtool_op_get_link,
 776         .get_link_ksettings = dpaa2_eth_get_link_ksettings,
 777         .set_link_ksettings = dpaa2_eth_set_link_ksettings,
 778         .get_pauseparam = dpaa2_eth_get_pauseparam,
 779         .set_pauseparam = dpaa2_eth_set_pauseparam,
 780         .get_sset_count = dpaa2_eth_get_sset_count,
 781         .get_ethtool_stats = dpaa2_eth_get_ethtool_stats,
 782         .get_strings = dpaa2_eth_get_strings,
 783         .get_rxnfc = dpaa2_eth_get_rxnfc,
 784         .set_rxnfc = dpaa2_eth_set_rxnfc,
 785         .get_ts_info = dpaa2_eth_get_ts_info,
 786 };