1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 2 /* Microsemi Ocelot Switch driver 3 * 4 * Copyright (c) 2017, 2019 Microsemi Corporation 5 */ 6 7 #include <linux/if_bridge.h> 8 #include "ocelot.h" 9 #include "ocelot_vcap.h" 10 11 int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv, 12 struct flow_cls_offload *f, 13 bool ingress) 14 { 15 struct ocelot *ocelot = priv->port.ocelot; 16 int port = priv->chip_port; 17 18 if (!ingress) 19 return -EOPNOTSUPP; 20 21 switch (f->command) { 22 case FLOW_CLS_REPLACE: 23 return ocelot_cls_flower_replace(ocelot, port, f, ingress); 24 case FLOW_CLS_DESTROY: 25 return ocelot_cls_flower_destroy(ocelot, port, f, ingress); 26 case FLOW_CLS_STATS: 27 return ocelot_cls_flower_stats(ocelot, port, f, ingress); 28 default: 29 return -EOPNOTSUPP; 30 } 31 } 32 33 static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv, 34 struct tc_cls_matchall_offload *f, 35 bool ingress) 36 { 37 struct netlink_ext_ack *extack = f->common.extack; 38 struct ocelot *ocelot = priv->port.ocelot; 39 struct ocelot_policer pol = { 0 }; 40 struct flow_action_entry *action; 41 int port = priv->chip_port; 42 int err; 43 44 if (!ingress) { 45 NL_SET_ERR_MSG_MOD(extack, "Only ingress is supported"); 46 return -EOPNOTSUPP; 47 } 48 49 switch (f->command) { 50 case TC_CLSMATCHALL_REPLACE: 51 if (!flow_offload_has_one_action(&f->rule->action)) { 52 NL_SET_ERR_MSG_MOD(extack, 53 "Only one action is supported"); 54 return -EOPNOTSUPP; 55 } 56 57 if (priv->tc.block_shared) { 58 NL_SET_ERR_MSG_MOD(extack, 59 "Rate limit is not supported on shared blocks"); 60 return -EOPNOTSUPP; 61 } 62 63 action = &f->rule->action.entries[0]; 64 65 if (action->id != FLOW_ACTION_POLICE) { 66 NL_SET_ERR_MSG_MOD(extack, "Unsupported action"); 67 return -EOPNOTSUPP; 68 } 69 70 if (priv->tc.police_id && priv->tc.police_id != f->cookie) { 71 NL_SET_ERR_MSG_MOD(extack, 72 "Only one policer per port is supported"); 73 return -EEXIST; 74 } 75 76 pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8; 77 pol.burst = action->police.burst; 78 79 err = ocelot_port_policer_add(ocelot, port, &pol); 80 if (err) { 81 NL_SET_ERR_MSG_MOD(extack, "Could not add policer"); 82 return err; 83 } 84 85 priv->tc.police_id = f->cookie; 86 priv->tc.offload_cnt++; 87 return 0; 88 case TC_CLSMATCHALL_DESTROY: 89 if (priv->tc.police_id != f->cookie) 90 return -ENOENT; 91 92 err = ocelot_port_policer_del(ocelot, port); 93 if (err) { 94 NL_SET_ERR_MSG_MOD(extack, 95 "Could not delete policer"); 96 return err; 97 } 98 priv->tc.police_id = 0; 99 priv->tc.offload_cnt--; 100 return 0; 101 case TC_CLSMATCHALL_STATS: 102 default: 103 return -EOPNOTSUPP; 104 } 105 } 106 107 static int ocelot_setup_tc_block_cb(enum tc_setup_type type, 108 void *type_data, 109 void *cb_priv, bool ingress) 110 { 111 struct ocelot_port_private *priv = cb_priv; 112 113 if (!tc_cls_can_offload_and_chain0(priv->dev, type_data)) 114 return -EOPNOTSUPP; 115 116 switch (type) { 117 case TC_SETUP_CLSMATCHALL: 118 return ocelot_setup_tc_cls_matchall(priv, type_data, ingress); 119 case TC_SETUP_CLSFLOWER: 120 return ocelot_setup_tc_cls_flower(priv, type_data, ingress); 121 default: 122 return -EOPNOTSUPP; 123 } 124 } 125 126 static int ocelot_setup_tc_block_cb_ig(enum tc_setup_type type, 127 void *type_data, 128 void *cb_priv) 129 { 130 return ocelot_setup_tc_block_cb(type, type_data, 131 cb_priv, true); 132 } 133 134 static int ocelot_setup_tc_block_cb_eg(enum tc_setup_type type, 135 void *type_data, 136 void *cb_priv) 137 { 138 return ocelot_setup_tc_block_cb(type, type_data, 139 cb_priv, false); 140 } 141 142 static LIST_HEAD(ocelot_block_cb_list); 143 144 static int ocelot_setup_tc_block(struct ocelot_port_private *priv, 145 struct flow_block_offload *f) 146 { 147 struct flow_block_cb *block_cb; 148 flow_setup_cb_t *cb; 149 150 if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) { 151 cb = ocelot_setup_tc_block_cb_ig; 152 priv->tc.block_shared = f->block_shared; 153 } else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) { 154 cb = ocelot_setup_tc_block_cb_eg; 155 } else { 156 return -EOPNOTSUPP; 157 } 158 159 f->driver_block_list = &ocelot_block_cb_list; 160 161 switch (f->command) { 162 case FLOW_BLOCK_BIND: 163 if (flow_block_cb_is_busy(cb, priv, &ocelot_block_cb_list)) 164 return -EBUSY; 165 166 block_cb = flow_block_cb_alloc(cb, priv, priv, NULL); 167 if (IS_ERR(block_cb)) 168 return PTR_ERR(block_cb); 169 170 flow_block_cb_add(block_cb, f); 171 list_add_tail(&block_cb->driver_list, f->driver_block_list); 172 return 0; 173 case FLOW_BLOCK_UNBIND: 174 block_cb = flow_block_cb_lookup(f->block, cb, priv); 175 if (!block_cb) 176 return -ENOENT; 177 178 flow_block_cb_remove(block_cb, f); 179 list_del(&block_cb->driver_list); 180 return 0; 181 default: 182 return -EOPNOTSUPP; 183 } 184 } 185 186 static int ocelot_setup_tc(struct net_device *dev, enum tc_setup_type type, 187 void *type_data) 188 { 189 struct ocelot_port_private *priv = netdev_priv(dev); 190 191 switch (type) { 192 case TC_SETUP_BLOCK: 193 return ocelot_setup_tc_block(priv, type_data); 194 default: 195 return -EOPNOTSUPP; 196 } 197 return 0; 198 } 199 200 static void ocelot_port_adjust_link(struct net_device *dev) 201 { 202 struct ocelot_port_private *priv = netdev_priv(dev); 203 struct ocelot *ocelot = priv->port.ocelot; 204 int port = priv->chip_port; 205 206 ocelot_adjust_link(ocelot, port, dev->phydev); 207 } 208 209 static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid, 210 bool untagged) 211 { 212 struct ocelot_port_private *priv = netdev_priv(dev); 213 struct ocelot_port *ocelot_port = &priv->port; 214 struct ocelot *ocelot = ocelot_port->ocelot; 215 int port = priv->chip_port; 216 int ret; 217 218 ret = ocelot_vlan_add(ocelot, port, vid, pvid, untagged); 219 if (ret) 220 return ret; 221 222 /* Add the port MAC address to with the right VLAN information */ 223 ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid, 224 ENTRYTYPE_LOCKED); 225 226 return 0; 227 } 228 229 static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid) 230 { 231 struct ocelot_port_private *priv = netdev_priv(dev); 232 struct ocelot *ocelot = priv->port.ocelot; 233 int port = priv->chip_port; 234 int ret; 235 236 /* 8021q removes VID 0 on module unload for all interfaces 237 * with VLAN filtering feature. We need to keep it to receive 238 * untagged traffic. 239 */ 240 if (vid == 0) 241 return 0; 242 243 ret = ocelot_vlan_del(ocelot, port, vid); 244 if (ret) 245 return ret; 246 247 /* Del the port MAC address to with the right VLAN information */ 248 ocelot_mact_forget(ocelot, dev->dev_addr, vid); 249 250 return 0; 251 } 252 253 static int ocelot_port_open(struct net_device *dev) 254 { 255 struct ocelot_port_private *priv = netdev_priv(dev); 256 struct ocelot_port *ocelot_port = &priv->port; 257 struct ocelot *ocelot = ocelot_port->ocelot; 258 int port = priv->chip_port; 259 int err; 260 261 if (priv->serdes) { 262 err = phy_set_mode_ext(priv->serdes, PHY_MODE_ETHERNET, 263 ocelot_port->phy_mode); 264 if (err) { 265 netdev_err(dev, "Could not set mode of SerDes\n"); 266 return err; 267 } 268 } 269 270 err = phy_connect_direct(dev, priv->phy, &ocelot_port_adjust_link, 271 ocelot_port->phy_mode); 272 if (err) { 273 netdev_err(dev, "Could not attach to PHY\n"); 274 return err; 275 } 276 277 dev->phydev = priv->phy; 278 279 phy_attached_info(priv->phy); 280 phy_start(priv->phy); 281 282 ocelot_port_enable(ocelot, port, priv->phy); 283 284 return 0; 285 } 286 287 static int ocelot_port_stop(struct net_device *dev) 288 { 289 struct ocelot_port_private *priv = netdev_priv(dev); 290 struct ocelot *ocelot = priv->port.ocelot; 291 int port = priv->chip_port; 292 293 phy_disconnect(priv->phy); 294 295 dev->phydev = NULL; 296 297 ocelot_port_disable(ocelot, port); 298 299 return 0; 300 } 301 302 /* Generate the IFH for frame injection 303 * 304 * The IFH is a 128bit-value 305 * bit 127: bypass the analyzer processing 306 * bit 56-67: destination mask 307 * bit 28-29: pop_cnt: 3 disables all rewriting of the frame 308 * bit 20-27: cpu extraction queue mask 309 * bit 16: tag type 0: C-tag, 1: S-tag 310 * bit 0-11: VID 311 */ 312 static int ocelot_gen_ifh(u32 *ifh, struct frame_info *info) 313 { 314 ifh[0] = IFH_INJ_BYPASS | ((0x1ff & info->rew_op) << 21); 315 ifh[1] = (0xf00 & info->port) >> 8; 316 ifh[2] = (0xff & info->port) << 24; 317 ifh[3] = (info->tag_type << 16) | info->vid; 318 319 return 0; 320 } 321 322 static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev) 323 { 324 struct ocelot_port_private *priv = netdev_priv(dev); 325 struct skb_shared_info *shinfo = skb_shinfo(skb); 326 struct ocelot_port *ocelot_port = &priv->port; 327 struct ocelot *ocelot = ocelot_port->ocelot; 328 u32 val, ifh[OCELOT_TAG_LEN / 4]; 329 struct frame_info info = {}; 330 u8 grp = 0; /* Send everything on CPU group 0 */ 331 unsigned int i, count, last; 332 int port = priv->chip_port; 333 334 val = ocelot_read(ocelot, QS_INJ_STATUS); 335 if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp))) || 336 (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp)))) 337 return NETDEV_TX_BUSY; 338 339 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | 340 QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp); 341 342 info.port = BIT(port); 343 info.tag_type = IFH_TAG_TYPE_C; 344 info.vid = skb_vlan_tag_get(skb); 345 346 /* Check if timestamping is needed */ 347 if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP) { 348 info.rew_op = ocelot_port->ptp_cmd; 349 if (ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) 350 info.rew_op |= (ocelot_port->ts_id % 4) << 3; 351 } 352 353 ocelot_gen_ifh(ifh, &info); 354 355 for (i = 0; i < OCELOT_TAG_LEN / 4; i++) 356 ocelot_write_rix(ocelot, (__force u32)cpu_to_be32(ifh[i]), 357 QS_INJ_WR, grp); 358 359 count = (skb->len + 3) / 4; 360 last = skb->len % 4; 361 for (i = 0; i < count; i++) 362 ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp); 363 364 /* Add padding */ 365 while (i < (OCELOT_BUFFER_CELL_SZ / 4)) { 366 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); 367 i++; 368 } 369 370 /* Indicate EOF and valid bytes in last word */ 371 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | 372 QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) | 373 QS_INJ_CTRL_EOF, 374 QS_INJ_CTRL, grp); 375 376 /* Add dummy CRC */ 377 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); 378 skb_tx_timestamp(skb); 379 380 dev->stats.tx_packets++; 381 dev->stats.tx_bytes += skb->len; 382 383 if (!ocelot_port_add_txtstamp_skb(ocelot_port, skb)) { 384 ocelot_port->ts_id++; 385 return NETDEV_TX_OK; 386 } 387 388 dev_kfree_skb_any(skb); 389 return NETDEV_TX_OK; 390 } 391 392 static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr) 393 { 394 struct ocelot_port_private *priv = netdev_priv(dev); 395 struct ocelot_port *ocelot_port = &priv->port; 396 struct ocelot *ocelot = ocelot_port->ocelot; 397 398 return ocelot_mact_forget(ocelot, addr, ocelot_port->pvid); 399 } 400 401 static int ocelot_mc_sync(struct net_device *dev, const unsigned char *addr) 402 { 403 struct ocelot_port_private *priv = netdev_priv(dev); 404 struct ocelot_port *ocelot_port = &priv->port; 405 struct ocelot *ocelot = ocelot_port->ocelot; 406 407 return ocelot_mact_learn(ocelot, PGID_CPU, addr, ocelot_port->pvid, 408 ENTRYTYPE_LOCKED); 409 } 410 411 static void ocelot_set_rx_mode(struct net_device *dev) 412 { 413 struct ocelot_port_private *priv = netdev_priv(dev); 414 struct ocelot *ocelot = priv->port.ocelot; 415 u32 val; 416 int i; 417 418 /* This doesn't handle promiscuous mode because the bridge core is 419 * setting IFF_PROMISC on all slave interfaces and all frames would be 420 * forwarded to the CPU port. 421 */ 422 val = GENMASK(ocelot->num_phys_ports - 1, 0); 423 for_each_nonreserved_multicast_dest_pgid(ocelot, i) 424 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i); 425 426 __dev_mc_sync(dev, ocelot_mc_sync, ocelot_mc_unsync); 427 } 428 429 static int ocelot_port_get_phys_port_name(struct net_device *dev, 430 char *buf, size_t len) 431 { 432 struct ocelot_port_private *priv = netdev_priv(dev); 433 int port = priv->chip_port; 434 int ret; 435 436 ret = snprintf(buf, len, "p%d", port); 437 if (ret >= len) 438 return -EINVAL; 439 440 return 0; 441 } 442 443 static int ocelot_port_set_mac_address(struct net_device *dev, void *p) 444 { 445 struct ocelot_port_private *priv = netdev_priv(dev); 446 struct ocelot_port *ocelot_port = &priv->port; 447 struct ocelot *ocelot = ocelot_port->ocelot; 448 const struct sockaddr *addr = p; 449 450 /* Learn the new net device MAC address in the mac table. */ 451 ocelot_mact_learn(ocelot, PGID_CPU, addr->sa_data, ocelot_port->pvid, 452 ENTRYTYPE_LOCKED); 453 /* Then forget the previous one. */ 454 ocelot_mact_forget(ocelot, dev->dev_addr, ocelot_port->pvid); 455 456 ether_addr_copy(dev->dev_addr, addr->sa_data); 457 return 0; 458 } 459 460 static void ocelot_get_stats64(struct net_device *dev, 461 struct rtnl_link_stats64 *stats) 462 { 463 struct ocelot_port_private *priv = netdev_priv(dev); 464 struct ocelot *ocelot = priv->port.ocelot; 465 int port = priv->chip_port; 466 467 /* Configure the port to read the stats from */ 468 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port), 469 SYS_STAT_CFG); 470 471 /* Get Rx stats */ 472 stats->rx_bytes = ocelot_read(ocelot, SYS_COUNT_RX_OCTETS); 473 stats->rx_packets = ocelot_read(ocelot, SYS_COUNT_RX_SHORTS) + 474 ocelot_read(ocelot, SYS_COUNT_RX_FRAGMENTS) + 475 ocelot_read(ocelot, SYS_COUNT_RX_JABBERS) + 476 ocelot_read(ocelot, SYS_COUNT_RX_LONGS) + 477 ocelot_read(ocelot, SYS_COUNT_RX_64) + 478 ocelot_read(ocelot, SYS_COUNT_RX_65_127) + 479 ocelot_read(ocelot, SYS_COUNT_RX_128_255) + 480 ocelot_read(ocelot, SYS_COUNT_RX_256_1023) + 481 ocelot_read(ocelot, SYS_COUNT_RX_1024_1526) + 482 ocelot_read(ocelot, SYS_COUNT_RX_1527_MAX); 483 stats->multicast = ocelot_read(ocelot, SYS_COUNT_RX_MULTICAST); 484 stats->rx_dropped = dev->stats.rx_dropped; 485 486 /* Get Tx stats */ 487 stats->tx_bytes = ocelot_read(ocelot, SYS_COUNT_TX_OCTETS); 488 stats->tx_packets = ocelot_read(ocelot, SYS_COUNT_TX_64) + 489 ocelot_read(ocelot, SYS_COUNT_TX_65_127) + 490 ocelot_read(ocelot, SYS_COUNT_TX_128_511) + 491 ocelot_read(ocelot, SYS_COUNT_TX_512_1023) + 492 ocelot_read(ocelot, SYS_COUNT_TX_1024_1526) + 493 ocelot_read(ocelot, SYS_COUNT_TX_1527_MAX); 494 stats->tx_dropped = ocelot_read(ocelot, SYS_COUNT_TX_DROPS) + 495 ocelot_read(ocelot, SYS_COUNT_TX_AGING); 496 stats->collisions = ocelot_read(ocelot, SYS_COUNT_TX_COLLISION); 497 } 498 499 static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 500 struct net_device *dev, 501 const unsigned char *addr, 502 u16 vid, u16 flags, 503 struct netlink_ext_ack *extack) 504 { 505 struct ocelot_port_private *priv = netdev_priv(dev); 506 struct ocelot *ocelot = priv->port.ocelot; 507 int port = priv->chip_port; 508 509 return ocelot_fdb_add(ocelot, port, addr, vid); 510 } 511 512 static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], 513 struct net_device *dev, 514 const unsigned char *addr, u16 vid) 515 { 516 struct ocelot_port_private *priv = netdev_priv(dev); 517 struct ocelot *ocelot = priv->port.ocelot; 518 int port = priv->chip_port; 519 520 return ocelot_fdb_del(ocelot, port, addr, vid); 521 } 522 523 static int ocelot_port_fdb_dump(struct sk_buff *skb, 524 struct netlink_callback *cb, 525 struct net_device *dev, 526 struct net_device *filter_dev, int *idx) 527 { 528 struct ocelot_port_private *priv = netdev_priv(dev); 529 struct ocelot *ocelot = priv->port.ocelot; 530 struct ocelot_dump_ctx dump = { 531 .dev = dev, 532 .skb = skb, 533 .cb = cb, 534 .idx = *idx, 535 }; 536 int port = priv->chip_port; 537 int ret; 538 539 ret = ocelot_fdb_dump(ocelot, port, ocelot_port_fdb_do_dump, &dump); 540 541 *idx = dump.idx; 542 543 return ret; 544 } 545 546 static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto, 547 u16 vid) 548 { 549 return ocelot_vlan_vid_add(dev, vid, false, false); 550 } 551 552 static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, 553 u16 vid) 554 { 555 return ocelot_vlan_vid_del(dev, vid); 556 } 557 558 static void ocelot_vlan_mode(struct ocelot *ocelot, int port, 559 netdev_features_t features) 560 { 561 u32 val; 562 563 /* Filtering */ 564 val = ocelot_read(ocelot, ANA_VLANMASK); 565 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) 566 val |= BIT(port); 567 else 568 val &= ~BIT(port); 569 ocelot_write(ocelot, val, ANA_VLANMASK); 570 } 571 572 static int ocelot_set_features(struct net_device *dev, 573 netdev_features_t features) 574 { 575 netdev_features_t changed = dev->features ^ features; 576 struct ocelot_port_private *priv = netdev_priv(dev); 577 struct ocelot *ocelot = priv->port.ocelot; 578 int port = priv->chip_port; 579 580 if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) && 581 priv->tc.offload_cnt) { 582 netdev_err(dev, 583 "Cannot disable HW TC offload while offloads active\n"); 584 return -EBUSY; 585 } 586 587 if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) 588 ocelot_vlan_mode(ocelot, port, features); 589 590 return 0; 591 } 592 593 static int ocelot_get_port_parent_id(struct net_device *dev, 594 struct netdev_phys_item_id *ppid) 595 { 596 struct ocelot_port_private *priv = netdev_priv(dev); 597 struct ocelot *ocelot = priv->port.ocelot; 598 599 ppid->id_len = sizeof(ocelot->base_mac); 600 memcpy(&ppid->id, &ocelot->base_mac, ppid->id_len); 601 602 return 0; 603 } 604 605 static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 606 { 607 struct ocelot_port_private *priv = netdev_priv(dev); 608 struct ocelot *ocelot = priv->port.ocelot; 609 int port = priv->chip_port; 610 611 /* If the attached PHY device isn't capable of timestamping operations, 612 * use our own (when possible). 613 */ 614 if (!phy_has_hwtstamp(dev->phydev) && ocelot->ptp) { 615 switch (cmd) { 616 case SIOCSHWTSTAMP: 617 return ocelot_hwstamp_set(ocelot, port, ifr); 618 case SIOCGHWTSTAMP: 619 return ocelot_hwstamp_get(ocelot, port, ifr); 620 } 621 } 622 623 return phy_mii_ioctl(dev->phydev, ifr, cmd); 624 } 625 626 static const struct net_device_ops ocelot_port_netdev_ops = { 627 .ndo_open = ocelot_port_open, 628 .ndo_stop = ocelot_port_stop, 629 .ndo_start_xmit = ocelot_port_xmit, 630 .ndo_set_rx_mode = ocelot_set_rx_mode, 631 .ndo_get_phys_port_name = ocelot_port_get_phys_port_name, 632 .ndo_set_mac_address = ocelot_port_set_mac_address, 633 .ndo_get_stats64 = ocelot_get_stats64, 634 .ndo_fdb_add = ocelot_port_fdb_add, 635 .ndo_fdb_del = ocelot_port_fdb_del, 636 .ndo_fdb_dump = ocelot_port_fdb_dump, 637 .ndo_vlan_rx_add_vid = ocelot_vlan_rx_add_vid, 638 .ndo_vlan_rx_kill_vid = ocelot_vlan_rx_kill_vid, 639 .ndo_set_features = ocelot_set_features, 640 .ndo_get_port_parent_id = ocelot_get_port_parent_id, 641 .ndo_setup_tc = ocelot_setup_tc, 642 .ndo_do_ioctl = ocelot_ioctl, 643 }; 644 645 static void ocelot_port_get_strings(struct net_device *netdev, u32 sset, 646 u8 *data) 647 { 648 struct ocelot_port_private *priv = netdev_priv(netdev); 649 struct ocelot *ocelot = priv->port.ocelot; 650 int port = priv->chip_port; 651 652 ocelot_get_strings(ocelot, port, sset, data); 653 } 654 655 static void ocelot_port_get_ethtool_stats(struct net_device *dev, 656 struct ethtool_stats *stats, 657 u64 *data) 658 { 659 struct ocelot_port_private *priv = netdev_priv(dev); 660 struct ocelot *ocelot = priv->port.ocelot; 661 int port = priv->chip_port; 662 663 ocelot_get_ethtool_stats(ocelot, port, data); 664 } 665 666 static int ocelot_port_get_sset_count(struct net_device *dev, int sset) 667 { 668 struct ocelot_port_private *priv = netdev_priv(dev); 669 struct ocelot *ocelot = priv->port.ocelot; 670 int port = priv->chip_port; 671 672 return ocelot_get_sset_count(ocelot, port, sset); 673 } 674 675 static int ocelot_port_get_ts_info(struct net_device *dev, 676 struct ethtool_ts_info *info) 677 { 678 struct ocelot_port_private *priv = netdev_priv(dev); 679 struct ocelot *ocelot = priv->port.ocelot; 680 int port = priv->chip_port; 681 682 if (!ocelot->ptp) 683 return ethtool_op_get_ts_info(dev, info); 684 685 return ocelot_get_ts_info(ocelot, port, info); 686 } 687 688 static const struct ethtool_ops ocelot_ethtool_ops = { 689 .get_strings = ocelot_port_get_strings, 690 .get_ethtool_stats = ocelot_port_get_ethtool_stats, 691 .get_sset_count = ocelot_port_get_sset_count, 692 .get_link_ksettings = phy_ethtool_get_link_ksettings, 693 .set_link_ksettings = phy_ethtool_set_link_ksettings, 694 .get_ts_info = ocelot_port_get_ts_info, 695 }; 696 697 static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port, 698 struct switchdev_trans *trans, 699 u8 state) 700 { 701 if (switchdev_trans_ph_prepare(trans)) 702 return; 703 704 ocelot_bridge_stp_state_set(ocelot, port, state); 705 } 706 707 static void ocelot_port_attr_ageing_set(struct ocelot *ocelot, int port, 708 unsigned long ageing_clock_t) 709 { 710 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t); 711 u32 ageing_time = jiffies_to_msecs(ageing_jiffies); 712 713 ocelot_set_ageing_time(ocelot, ageing_time); 714 } 715 716 static void ocelot_port_attr_mc_set(struct ocelot *ocelot, int port, bool mc) 717 { 718 u32 cpu_fwd_mcast = ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA | 719 ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA | 720 ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA; 721 u32 val = 0; 722 723 if (mc) 724 val = cpu_fwd_mcast; 725 726 ocelot_rmw_gix(ocelot, val, cpu_fwd_mcast, 727 ANA_PORT_CPU_FWD_CFG, port); 728 } 729 730 static int ocelot_port_attr_set(struct net_device *dev, 731 const struct switchdev_attr *attr, 732 struct switchdev_trans *trans) 733 { 734 struct ocelot_port_private *priv = netdev_priv(dev); 735 struct ocelot *ocelot = priv->port.ocelot; 736 int port = priv->chip_port; 737 int err = 0; 738 739 switch (attr->id) { 740 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 741 ocelot_port_attr_stp_state_set(ocelot, port, trans, 742 attr->u.stp_state); 743 break; 744 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: 745 ocelot_port_attr_ageing_set(ocelot, port, attr->u.ageing_time); 746 break; 747 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 748 ocelot_port_vlan_filtering(ocelot, port, 749 attr->u.vlan_filtering); 750 break; 751 case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED: 752 ocelot_port_attr_mc_set(ocelot, port, !attr->u.mc_disabled); 753 break; 754 default: 755 err = -EOPNOTSUPP; 756 break; 757 } 758 759 return err; 760 } 761 762 static int ocelot_port_obj_add_vlan(struct net_device *dev, 763 const struct switchdev_obj_port_vlan *vlan, 764 struct switchdev_trans *trans) 765 { 766 int ret; 767 u16 vid; 768 769 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 770 ret = ocelot_vlan_vid_add(dev, vid, 771 vlan->flags & BRIDGE_VLAN_INFO_PVID, 772 vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED); 773 if (ret) 774 return ret; 775 } 776 777 return 0; 778 } 779 780 static int ocelot_port_vlan_del_vlan(struct net_device *dev, 781 const struct switchdev_obj_port_vlan *vlan) 782 { 783 int ret; 784 u16 vid; 785 786 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 787 ret = ocelot_vlan_vid_del(dev, vid); 788 789 if (ret) 790 return ret; 791 } 792 793 return 0; 794 } 795 796 static int ocelot_port_obj_add_mdb(struct net_device *dev, 797 const struct switchdev_obj_port_mdb *mdb, 798 struct switchdev_trans *trans) 799 { 800 struct ocelot_port_private *priv = netdev_priv(dev); 801 struct ocelot_port *ocelot_port = &priv->port; 802 struct ocelot *ocelot = ocelot_port->ocelot; 803 int port = priv->chip_port; 804 805 if (switchdev_trans_ph_prepare(trans)) 806 return 0; 807 808 return ocelot_port_mdb_add(ocelot, port, mdb); 809 } 810 811 static int ocelot_port_obj_del_mdb(struct net_device *dev, 812 const struct switchdev_obj_port_mdb *mdb) 813 { 814 struct ocelot_port_private *priv = netdev_priv(dev); 815 struct ocelot_port *ocelot_port = &priv->port; 816 struct ocelot *ocelot = ocelot_port->ocelot; 817 int port = priv->chip_port; 818 819 return ocelot_port_mdb_del(ocelot, port, mdb); 820 } 821 822 static int ocelot_port_obj_add(struct net_device *dev, 823 const struct switchdev_obj *obj, 824 struct switchdev_trans *trans, 825 struct netlink_ext_ack *extack) 826 { 827 int ret = 0; 828 829 switch (obj->id) { 830 case SWITCHDEV_OBJ_ID_PORT_VLAN: 831 ret = ocelot_port_obj_add_vlan(dev, 832 SWITCHDEV_OBJ_PORT_VLAN(obj), 833 trans); 834 break; 835 case SWITCHDEV_OBJ_ID_PORT_MDB: 836 ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj), 837 trans); 838 break; 839 default: 840 return -EOPNOTSUPP; 841 } 842 843 return ret; 844 } 845 846 static int ocelot_port_obj_del(struct net_device *dev, 847 const struct switchdev_obj *obj) 848 { 849 int ret = 0; 850 851 switch (obj->id) { 852 case SWITCHDEV_OBJ_ID_PORT_VLAN: 853 ret = ocelot_port_vlan_del_vlan(dev, 854 SWITCHDEV_OBJ_PORT_VLAN(obj)); 855 break; 856 case SWITCHDEV_OBJ_ID_PORT_MDB: 857 ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj)); 858 break; 859 default: 860 return -EOPNOTSUPP; 861 } 862 863 return ret; 864 } 865 866 /* Checks if the net_device instance given to us originate from our driver. */ 867 static bool ocelot_netdevice_dev_check(const struct net_device *dev) 868 { 869 return dev->netdev_ops == &ocelot_port_netdev_ops; 870 } 871 872 static int ocelot_netdevice_port_event(struct net_device *dev, 873 unsigned long event, 874 struct netdev_notifier_changeupper_info *info) 875 { 876 struct ocelot_port_private *priv = netdev_priv(dev); 877 struct ocelot_port *ocelot_port = &priv->port; 878 struct ocelot *ocelot = ocelot_port->ocelot; 879 int port = priv->chip_port; 880 int err = 0; 881 882 switch (event) { 883 case NETDEV_CHANGEUPPER: 884 if (netif_is_bridge_master(info->upper_dev)) { 885 if (info->linking) { 886 err = ocelot_port_bridge_join(ocelot, port, 887 info->upper_dev); 888 } else { 889 err = ocelot_port_bridge_leave(ocelot, port, 890 info->upper_dev); 891 } 892 } 893 if (netif_is_lag_master(info->upper_dev)) { 894 if (info->linking) 895 err = ocelot_port_lag_join(ocelot, port, 896 info->upper_dev); 897 else 898 ocelot_port_lag_leave(ocelot, port, 899 info->upper_dev); 900 } 901 break; 902 default: 903 break; 904 } 905 906 return err; 907 } 908 909 static int ocelot_netdevice_event(struct notifier_block *unused, 910 unsigned long event, void *ptr) 911 { 912 struct netdev_notifier_changeupper_info *info = ptr; 913 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 914 int ret = 0; 915 916 if (!ocelot_netdevice_dev_check(dev)) 917 return 0; 918 919 if (event == NETDEV_PRECHANGEUPPER && 920 netif_is_lag_master(info->upper_dev)) { 921 struct netdev_lag_upper_info *lag_upper_info = info->upper_info; 922 struct netlink_ext_ack *extack; 923 924 if (lag_upper_info && 925 lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) { 926 extack = netdev_notifier_info_to_extack(&info->info); 927 NL_SET_ERR_MSG_MOD(extack, "LAG device using unsupported Tx type"); 928 929 ret = -EINVAL; 930 goto notify; 931 } 932 } 933 934 if (netif_is_lag_master(dev)) { 935 struct net_device *slave; 936 struct list_head *iter; 937 938 netdev_for_each_lower_dev(dev, slave, iter) { 939 ret = ocelot_netdevice_port_event(slave, event, info); 940 if (ret) 941 goto notify; 942 } 943 } else { 944 ret = ocelot_netdevice_port_event(dev, event, info); 945 } 946 947 notify: 948 return notifier_from_errno(ret); 949 } 950 951 struct notifier_block ocelot_netdevice_nb __read_mostly = { 952 .notifier_call = ocelot_netdevice_event, 953 }; 954 955 static int ocelot_switchdev_event(struct notifier_block *unused, 956 unsigned long event, void *ptr) 957 { 958 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 959 int err; 960 961 switch (event) { 962 case SWITCHDEV_PORT_ATTR_SET: 963 err = switchdev_handle_port_attr_set(dev, ptr, 964 ocelot_netdevice_dev_check, 965 ocelot_port_attr_set); 966 return notifier_from_errno(err); 967 } 968 969 return NOTIFY_DONE; 970 } 971 972 struct notifier_block ocelot_switchdev_nb __read_mostly = { 973 .notifier_call = ocelot_switchdev_event, 974 }; 975 976 static int ocelot_switchdev_blocking_event(struct notifier_block *unused, 977 unsigned long event, void *ptr) 978 { 979 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 980 int err; 981 982 switch (event) { 983 /* Blocking events. */ 984 case SWITCHDEV_PORT_OBJ_ADD: 985 err = switchdev_handle_port_obj_add(dev, ptr, 986 ocelot_netdevice_dev_check, 987 ocelot_port_obj_add); 988 return notifier_from_errno(err); 989 case SWITCHDEV_PORT_OBJ_DEL: 990 err = switchdev_handle_port_obj_del(dev, ptr, 991 ocelot_netdevice_dev_check, 992 ocelot_port_obj_del); 993 return notifier_from_errno(err); 994 case SWITCHDEV_PORT_ATTR_SET: 995 err = switchdev_handle_port_attr_set(dev, ptr, 996 ocelot_netdevice_dev_check, 997 ocelot_port_attr_set); 998 return notifier_from_errno(err); 999 } 1000 1001 return NOTIFY_DONE; 1002 } 1003 1004 struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = { 1005 .notifier_call = ocelot_switchdev_blocking_event, 1006 }; 1007 1008 int ocelot_probe_port(struct ocelot *ocelot, int port, struct regmap *target, 1009 struct phy_device *phy) 1010 { 1011 struct ocelot_port_private *priv; 1012 struct ocelot_port *ocelot_port; 1013 struct net_device *dev; 1014 int err; 1015 1016 dev = alloc_etherdev(sizeof(struct ocelot_port_private)); 1017 if (!dev) 1018 return -ENOMEM; 1019 SET_NETDEV_DEV(dev, ocelot->dev); 1020 priv = netdev_priv(dev); 1021 priv->dev = dev; 1022 priv->phy = phy; 1023 priv->chip_port = port; 1024 ocelot_port = &priv->port; 1025 ocelot_port->ocelot = ocelot; 1026 ocelot_port->target = target; 1027 ocelot->ports[port] = ocelot_port; 1028 1029 dev->netdev_ops = &ocelot_port_netdev_ops; 1030 dev->ethtool_ops = &ocelot_ethtool_ops; 1031 1032 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS | 1033 NETIF_F_HW_TC; 1034 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC; 1035 1036 memcpy(dev->dev_addr, ocelot->base_mac, ETH_ALEN); 1037 dev->dev_addr[ETH_ALEN - 1] += port; 1038 ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid, 1039 ENTRYTYPE_LOCKED); 1040 1041 ocelot_init_port(ocelot, port); 1042 1043 err = register_netdev(dev); 1044 if (err) { 1045 dev_err(ocelot->dev, "register_netdev failed\n"); 1046 free_netdev(dev); 1047 } 1048 1049 return err; 1050 } 1051