Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 | // SPDX-License-Identifier: GPL-2.0+ #include <net/switchdev.h> #include "lan966x_main.h" struct lan966x_pgid_entry { struct list_head list; int index; refcount_t refcount; u16 ports; }; struct lan966x_mdb_entry { struct list_head list; unsigned char mac[ETH_ALEN]; u16 vid; u16 ports; struct lan966x_pgid_entry *pgid; u8 cpu_copy; }; void lan966x_mdb_init(struct lan966x *lan966x) { INIT_LIST_HEAD(&lan966x->mdb_entries); INIT_LIST_HEAD(&lan966x->pgid_entries); } static void lan966x_mdb_purge_mdb_entries(struct lan966x *lan966x) { struct lan966x_mdb_entry *mdb_entry, *tmp; list_for_each_entry_safe(mdb_entry, tmp, &lan966x->mdb_entries, list) { list_del(&mdb_entry->list); kfree(mdb_entry); } } static void lan966x_mdb_purge_pgid_entries(struct lan966x *lan966x) { struct lan966x_pgid_entry *pgid_entry, *tmp; list_for_each_entry_safe(pgid_entry, tmp, &lan966x->pgid_entries, list) { list_del(&pgid_entry->list); kfree(pgid_entry); } } void lan966x_mdb_deinit(struct lan966x *lan966x) { lan966x_mdb_purge_mdb_entries(lan966x); lan966x_mdb_purge_pgid_entries(lan966x); } static struct lan966x_mdb_entry * lan966x_mdb_entry_get(struct lan966x *lan966x, const unsigned char *mac, u16 vid) { struct lan966x_mdb_entry *mdb_entry; list_for_each_entry(mdb_entry, &lan966x->mdb_entries, list) { if (ether_addr_equal(mdb_entry->mac, mac) && mdb_entry->vid == vid) return mdb_entry; } return NULL; } static struct lan966x_mdb_entry * lan966x_mdb_entry_add(struct lan966x *lan966x, const struct switchdev_obj_port_mdb *mdb) { struct lan966x_mdb_entry *mdb_entry; mdb_entry = kzalloc(sizeof(*mdb_entry), GFP_KERNEL); if (!mdb_entry) return ERR_PTR(-ENOMEM); ether_addr_copy(mdb_entry->mac, mdb->addr); mdb_entry->vid = mdb->vid; list_add_tail(&mdb_entry->list, &lan966x->mdb_entries); return mdb_entry; } static void lan966x_mdb_encode_mac(unsigned char *mac, struct lan966x_mdb_entry *mdb_entry, enum macaccess_entry_type type) { ether_addr_copy(mac, mdb_entry->mac); if (type == ENTRYTYPE_MACV4) { mac[0] = 0; mac[1] = mdb_entry->ports >> 8; mac[2] = mdb_entry->ports & 0xff; } else if (type == ENTRYTYPE_MACV6) { mac[0] = mdb_entry->ports >> 8; mac[1] = mdb_entry->ports & 0xff; } } static int lan966x_mdb_ip_add(struct lan966x_port *port, const struct switchdev_obj_port_mdb *mdb, enum macaccess_entry_type type) { bool cpu_port = netif_is_bridge_master(mdb->obj.orig_dev); struct lan966x *lan966x = port->lan966x; struct lan966x_mdb_entry *mdb_entry; unsigned char mac[ETH_ALEN]; bool cpu_copy = false; mdb_entry = lan966x_mdb_entry_get(lan966x, mdb->addr, mdb->vid); if (!mdb_entry) { mdb_entry = lan966x_mdb_entry_add(lan966x, mdb); if (IS_ERR(mdb_entry)) return PTR_ERR(mdb_entry); } else { lan966x_mdb_encode_mac(mac, mdb_entry, type); lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type); } if (cpu_port) mdb_entry->cpu_copy++; else mdb_entry->ports |= BIT(port->chip_port); /* Copy the frame to CPU only if the CPU is in the VLAN */ if (lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x, mdb_entry->vid) && mdb_entry->cpu_copy) cpu_copy = true; lan966x_mdb_encode_mac(mac, mdb_entry, type); return lan966x_mac_ip_learn(lan966x, cpu_copy, mac, mdb_entry->vid, type); } static int lan966x_mdb_ip_del(struct lan966x_port *port, const struct switchdev_obj_port_mdb *mdb, enum macaccess_entry_type type) { bool cpu_port = netif_is_bridge_master(mdb->obj.orig_dev); struct lan966x *lan966x = port->lan966x; struct lan966x_mdb_entry *mdb_entry; unsigned char mac[ETH_ALEN]; u16 ports; mdb_entry = lan966x_mdb_entry_get(lan966x, mdb->addr, mdb->vid); if (!mdb_entry) return -ENOENT; ports = mdb_entry->ports; if (cpu_port) { /* If there are still other references to the CPU port then * there is no point to delete and add again the same entry */ mdb_entry->cpu_copy--; if (mdb_entry->cpu_copy) return 0; } else { ports &= ~BIT(port->chip_port); } lan966x_mdb_encode_mac(mac, mdb_entry, type); lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type); mdb_entry->ports = ports; if (!mdb_entry->ports && !mdb_entry->cpu_copy) { list_del(&mdb_entry->list); kfree(mdb_entry); return 0; } lan966x_mdb_encode_mac(mac, mdb_entry, type); return lan966x_mac_ip_learn(lan966x, mdb_entry->cpu_copy, mac, mdb_entry->vid, type); } static struct lan966x_pgid_entry * lan966x_pgid_entry_add(struct lan966x *lan966x, int index, u16 ports) { struct lan966x_pgid_entry *pgid_entry; pgid_entry = kzalloc(sizeof(*pgid_entry), GFP_KERNEL); if (!pgid_entry) return ERR_PTR(-ENOMEM); pgid_entry->ports = ports; pgid_entry->index = index; refcount_set(&pgid_entry->refcount, 1); list_add_tail(&pgid_entry->list, &lan966x->pgid_entries); return pgid_entry; } static struct lan966x_pgid_entry * lan966x_pgid_entry_get(struct lan966x *lan966x, struct lan966x_mdb_entry *mdb_entry) { struct lan966x_pgid_entry *pgid_entry; int index; /* Try to find an existing pgid that uses the same ports as the * mdb_entry */ list_for_each_entry(pgid_entry, &lan966x->pgid_entries, list) { if (pgid_entry->ports == mdb_entry->ports) { refcount_inc(&pgid_entry->refcount); return pgid_entry; } } /* Try to find an empty pgid entry and allocate one in case it finds it, * otherwise it means that there are no more resources */ for (index = PGID_GP_START; index < PGID_GP_END; index++) { bool used = false; list_for_each_entry(pgid_entry, &lan966x->pgid_entries, list) { if (pgid_entry->index == index) { used = true; break; } } if (!used) return lan966x_pgid_entry_add(lan966x, index, mdb_entry->ports); } return ERR_PTR(-ENOSPC); } static void lan966x_pgid_entry_del(struct lan966x *lan966x, struct lan966x_pgid_entry *pgid_entry) { if (!refcount_dec_and_test(&pgid_entry->refcount)) return; list_del(&pgid_entry->list); kfree(pgid_entry); } static int lan966x_mdb_l2_add(struct lan966x_port *port, const struct switchdev_obj_port_mdb *mdb, enum macaccess_entry_type type) { bool cpu_port = netif_is_bridge_master(mdb->obj.orig_dev); struct lan966x *lan966x = port->lan966x; struct lan966x_pgid_entry *pgid_entry; struct lan966x_mdb_entry *mdb_entry; unsigned char mac[ETH_ALEN]; mdb_entry = lan966x_mdb_entry_get(lan966x, mdb->addr, mdb->vid); if (!mdb_entry) { mdb_entry = lan966x_mdb_entry_add(lan966x, mdb); if (IS_ERR(mdb_entry)) return PTR_ERR(mdb_entry); } else { lan966x_pgid_entry_del(lan966x, mdb_entry->pgid); lan966x_mdb_encode_mac(mac, mdb_entry, type); lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type); } if (cpu_port) { mdb_entry->ports |= BIT(CPU_PORT); mdb_entry->cpu_copy++; } else { mdb_entry->ports |= BIT(port->chip_port); } pgid_entry = lan966x_pgid_entry_get(lan966x, mdb_entry); if (IS_ERR(pgid_entry)) { list_del(&mdb_entry->list); kfree(mdb_entry); return PTR_ERR(pgid_entry); } mdb_entry->pgid = pgid_entry; /* Copy the frame to CPU only if the CPU is in the VLAN */ if (!lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x, mdb_entry->vid) && mdb_entry->cpu_copy) mdb_entry->ports &= BIT(CPU_PORT); lan_rmw(ANA_PGID_PGID_SET(mdb_entry->ports), ANA_PGID_PGID, lan966x, ANA_PGID(pgid_entry->index)); return lan966x_mac_learn(lan966x, pgid_entry->index, mdb_entry->mac, mdb_entry->vid, type); } static int lan966x_mdb_l2_del(struct lan966x_port *port, const struct switchdev_obj_port_mdb *mdb, enum macaccess_entry_type type) { bool cpu_port = netif_is_bridge_master(mdb->obj.orig_dev); struct lan966x *lan966x = port->lan966x; struct lan966x_pgid_entry *pgid_entry; struct lan966x_mdb_entry *mdb_entry; unsigned char mac[ETH_ALEN]; u16 ports; mdb_entry = lan966x_mdb_entry_get(lan966x, mdb->addr, mdb->vid); if (!mdb_entry) return -ENOENT; ports = mdb_entry->ports; if (cpu_port) { /* If there are still other references to the CPU port then * there is no point to delete and add again the same entry */ mdb_entry->cpu_copy--; if (mdb_entry->cpu_copy) return 0; ports &= ~BIT(CPU_PORT); } else { ports &= ~BIT(port->chip_port); } lan966x_mdb_encode_mac(mac, mdb_entry, type); lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type); lan966x_pgid_entry_del(lan966x, mdb_entry->pgid); mdb_entry->ports = ports; if (!mdb_entry->ports) { list_del(&mdb_entry->list); kfree(mdb_entry); return 0; } pgid_entry = lan966x_pgid_entry_get(lan966x, mdb_entry); if (IS_ERR(pgid_entry)) { list_del(&mdb_entry->list); kfree(mdb_entry); return PTR_ERR(pgid_entry); } mdb_entry->pgid = pgid_entry; lan_rmw(ANA_PGID_PGID_SET(mdb_entry->ports), ANA_PGID_PGID, lan966x, ANA_PGID(pgid_entry->index)); return lan966x_mac_learn(lan966x, pgid_entry->index, mdb_entry->mac, mdb_entry->vid, type); } static enum macaccess_entry_type lan966x_mdb_classify(const unsigned char *mac) { if (mac[0] == 0x01 && mac[1] == 0x00 && mac[2] == 0x5e) return ENTRYTYPE_MACV4; if (mac[0] == 0x33 && mac[1] == 0x33) return ENTRYTYPE_MACV6; return ENTRYTYPE_LOCKED; } int lan966x_handle_port_mdb_add(struct lan966x_port *port, const struct switchdev_obj *obj) { const struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj); enum macaccess_entry_type type; /* Split the way the entries are added for ipv4/ipv6 and for l2. The * reason is that for ipv4/ipv6 it doesn't require to use any pgid * entry, while for l2 is required to use pgid entries */ type = lan966x_mdb_classify(mdb->addr); if (type == ENTRYTYPE_MACV4 || type == ENTRYTYPE_MACV6) return lan966x_mdb_ip_add(port, mdb, type); return lan966x_mdb_l2_add(port, mdb, type); } int lan966x_handle_port_mdb_del(struct lan966x_port *port, const struct switchdev_obj *obj) { const struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj); enum macaccess_entry_type type; /* Split the way the entries are removed for ipv4/ipv6 and for l2. The * reason is that for ipv4/ipv6 it doesn't require to use any pgid * entry, while for l2 is required to use pgid entries */ type = lan966x_mdb_classify(mdb->addr); if (type == ENTRYTYPE_MACV4 || type == ENTRYTYPE_MACV6) return lan966x_mdb_ip_del(port, mdb, type); return lan966x_mdb_l2_del(port, mdb, type); } static void lan966x_mdb_ip_cpu_copy(struct lan966x *lan966x, struct lan966x_mdb_entry *mdb_entry, enum macaccess_entry_type type) { unsigned char mac[ETH_ALEN]; lan966x_mdb_encode_mac(mac, mdb_entry, type); lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type); lan966x_mac_ip_learn(lan966x, true, mac, mdb_entry->vid, type); } static void lan966x_mdb_l2_cpu_copy(struct lan966x *lan966x, struct lan966x_mdb_entry *mdb_entry, enum macaccess_entry_type type) { struct lan966x_pgid_entry *pgid_entry; unsigned char mac[ETH_ALEN]; lan966x_pgid_entry_del(lan966x, mdb_entry->pgid); lan966x_mdb_encode_mac(mac, mdb_entry, type); lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type); mdb_entry->ports |= BIT(CPU_PORT); pgid_entry = lan966x_pgid_entry_get(lan966x, mdb_entry); if (IS_ERR(pgid_entry)) return; mdb_entry->pgid = pgid_entry; lan_rmw(ANA_PGID_PGID_SET(mdb_entry->ports), ANA_PGID_PGID, lan966x, ANA_PGID(pgid_entry->index)); lan966x_mac_learn(lan966x, pgid_entry->index, mdb_entry->mac, mdb_entry->vid, type); } void lan966x_mdb_write_entries(struct lan966x *lan966x, u16 vid) { struct lan966x_mdb_entry *mdb_entry; enum macaccess_entry_type type; list_for_each_entry(mdb_entry, &lan966x->mdb_entries, list) { if (mdb_entry->vid != vid || !mdb_entry->cpu_copy) continue; type = lan966x_mdb_classify(mdb_entry->mac); if (type == ENTRYTYPE_MACV4 || type == ENTRYTYPE_MACV6) lan966x_mdb_ip_cpu_copy(lan966x, mdb_entry, type); else lan966x_mdb_l2_cpu_copy(lan966x, mdb_entry, type); } } static void lan966x_mdb_ip_cpu_remove(struct lan966x *lan966x, struct lan966x_mdb_entry *mdb_entry, enum macaccess_entry_type type) { unsigned char mac[ETH_ALEN]; lan966x_mdb_encode_mac(mac, mdb_entry, type); lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type); lan966x_mac_ip_learn(lan966x, false, mac, mdb_entry->vid, type); } static void lan966x_mdb_l2_cpu_remove(struct lan966x *lan966x, struct lan966x_mdb_entry *mdb_entry, enum macaccess_entry_type type) { struct lan966x_pgid_entry *pgid_entry; unsigned char mac[ETH_ALEN]; lan966x_pgid_entry_del(lan966x, mdb_entry->pgid); lan966x_mdb_encode_mac(mac, mdb_entry, type); lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type); mdb_entry->ports &= ~BIT(CPU_PORT); pgid_entry = lan966x_pgid_entry_get(lan966x, mdb_entry); if (IS_ERR(pgid_entry)) return; mdb_entry->pgid = pgid_entry; lan_rmw(ANA_PGID_PGID_SET(mdb_entry->ports), ANA_PGID_PGID, lan966x, ANA_PGID(pgid_entry->index)); lan966x_mac_learn(lan966x, pgid_entry->index, mdb_entry->mac, mdb_entry->vid, type); } void lan966x_mdb_erase_entries(struct lan966x *lan966x, u16 vid) { struct lan966x_mdb_entry *mdb_entry; enum macaccess_entry_type type; list_for_each_entry(mdb_entry, &lan966x->mdb_entries, list) { if (mdb_entry->vid != vid || !mdb_entry->cpu_copy) continue; type = lan966x_mdb_classify(mdb_entry->mac); if (type == ENTRYTYPE_MACV4 || type == ENTRYTYPE_MACV6) lan966x_mdb_ip_cpu_remove(lan966x, mdb_entry, type); else lan966x_mdb_l2_cpu_remove(lan966x, mdb_entry, type); } } void lan966x_mdb_clear_entries(struct lan966x *lan966x) { struct lan966x_mdb_entry *mdb_entry; enum macaccess_entry_type type; unsigned char mac[ETH_ALEN]; list_for_each_entry(mdb_entry, &lan966x->mdb_entries, list) { type = lan966x_mdb_classify(mdb_entry->mac); lan966x_mdb_encode_mac(mac, mdb_entry, type); /* Remove just the MAC entry, still keep the PGID in case of L2 * entries because this can be restored at later point */ lan966x_mac_forget(lan966x, mac, mdb_entry->vid, type); } } void lan966x_mdb_restore_entries(struct lan966x *lan966x) { struct lan966x_mdb_entry *mdb_entry; enum macaccess_entry_type type; unsigned char mac[ETH_ALEN]; bool cpu_copy = false; list_for_each_entry(mdb_entry, &lan966x->mdb_entries, list) { type = lan966x_mdb_classify(mdb_entry->mac); lan966x_mdb_encode_mac(mac, mdb_entry, type); if (type == ENTRYTYPE_MACV4 || type == ENTRYTYPE_MACV6) { /* Copy the frame to CPU only if the CPU is in the VLAN */ if (lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x, mdb_entry->vid) && mdb_entry->cpu_copy) cpu_copy = true; lan966x_mac_ip_learn(lan966x, cpu_copy, mac, mdb_entry->vid, type); } else { lan966x_mac_learn(lan966x, mdb_entry->pgid->index, mdb_entry->mac, mdb_entry->vid, type); } } } |