1 /* 2 * Copyright Gavin Shan, IBM Corporation 2016. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 */ 9 10 #include <linux/module.h> 11 #include <linux/kernel.h> 12 #include <linux/init.h> 13 #include <linux/netdevice.h> 14 #include <linux/skbuff.h> 15 16 #include <net/ncsi.h> 17 #include <net/net_namespace.h> 18 #include <net/sock.h> 19 20 #include "internal.h" 21 #include "ncsi-pkt.h" 22 23 static int ncsi_validate_rsp_pkt(struct ncsi_request *nr, 24 unsigned short payload) 25 { 26 struct ncsi_rsp_pkt_hdr *h; 27 u32 checksum; 28 __be32 *pchecksum; 29 30 /* Check NCSI packet header. We don't need validate 31 * the packet type, which should have been checked 32 * before calling this function. 33 */ 34 h = (struct ncsi_rsp_pkt_hdr *)skb_network_header(nr->rsp); 35 if (h->common.revision != NCSI_PKT_REVISION) 36 return -EINVAL; 37 if (ntohs(h->common.length) != payload) 38 return -EINVAL; 39 40 /* Check on code and reason */ 41 if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED || 42 ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR) 43 return -EINVAL; 44 45 /* Validate checksum, which might be zeroes if the 46 * sender doesn't support checksum according to NCSI 47 * specification. 48 */ 49 pchecksum = (__be32 *)((void *)(h + 1) + payload - 4); 50 if (ntohl(*pchecksum) == 0) 51 return 0; 52 53 checksum = ncsi_calculate_checksum((unsigned char *)h, 54 sizeof(*h) + payload - 4); 55 if (*pchecksum != htonl(checksum)) 56 return -EINVAL; 57 58 return 0; 59 } 60 61 static int ncsi_rsp_handler_cis(struct ncsi_request *nr) 62 { 63 struct ncsi_rsp_pkt *rsp; 64 struct ncsi_dev_priv *ndp = nr->ndp; 65 struct ncsi_package *np; 66 struct ncsi_channel *nc; 67 unsigned char id; 68 69 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 70 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, &nc); 71 if (!nc) { 72 if (ndp->flags & NCSI_DEV_PROBED) 73 return -ENXIO; 74 75 id = NCSI_CHANNEL_INDEX(rsp->rsp.common.channel); 76 nc = ncsi_add_channel(np, id); 77 } 78 79 return nc ? 0 : -ENODEV; 80 } 81 82 static int ncsi_rsp_handler_sp(struct ncsi_request *nr) 83 { 84 struct ncsi_rsp_pkt *rsp; 85 struct ncsi_dev_priv *ndp = nr->ndp; 86 struct ncsi_package *np; 87 unsigned char id; 88 89 /* Add the package if it's not existing. Otherwise, 90 * to change the state of its child channels. 91 */ 92 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 93 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 94 &np, NULL); 95 if (!np) { 96 if (ndp->flags & NCSI_DEV_PROBED) 97 return -ENXIO; 98 99 id = NCSI_PACKAGE_INDEX(rsp->rsp.common.channel); 100 np = ncsi_add_package(ndp, id); 101 if (!np) 102 return -ENODEV; 103 } 104 105 return 0; 106 } 107 108 static int ncsi_rsp_handler_dp(struct ncsi_request *nr) 109 { 110 struct ncsi_rsp_pkt *rsp; 111 struct ncsi_dev_priv *ndp = nr->ndp; 112 struct ncsi_package *np; 113 struct ncsi_channel *nc; 114 unsigned long flags; 115 116 /* Find the package */ 117 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 118 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 119 &np, NULL); 120 if (!np) 121 return -ENODEV; 122 123 /* Change state of all channels attached to the package */ 124 NCSI_FOR_EACH_CHANNEL(np, nc) { 125 spin_lock_irqsave(&nc->lock, flags); 126 nc->state = NCSI_CHANNEL_INACTIVE; 127 spin_unlock_irqrestore(&nc->lock, flags); 128 } 129 130 return 0; 131 } 132 133 static int ncsi_rsp_handler_ec(struct ncsi_request *nr) 134 { 135 struct ncsi_rsp_pkt *rsp; 136 struct ncsi_dev_priv *ndp = nr->ndp; 137 struct ncsi_channel *nc; 138 struct ncsi_channel_mode *ncm; 139 140 /* Find the package and channel */ 141 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 142 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 143 NULL, &nc); 144 if (!nc) 145 return -ENODEV; 146 147 ncm = &nc->modes[NCSI_MODE_ENABLE]; 148 if (ncm->enable) 149 return 0; 150 151 ncm->enable = 1; 152 return 0; 153 } 154 155 static int ncsi_rsp_handler_dc(struct ncsi_request *nr) 156 { 157 struct ncsi_rsp_pkt *rsp; 158 struct ncsi_dev_priv *ndp = nr->ndp; 159 struct ncsi_channel *nc; 160 struct ncsi_channel_mode *ncm; 161 int ret; 162 163 ret = ncsi_validate_rsp_pkt(nr, 4); 164 if (ret) 165 return ret; 166 167 /* Find the package and channel */ 168 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 169 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 170 NULL, &nc); 171 if (!nc) 172 return -ENODEV; 173 174 ncm = &nc->modes[NCSI_MODE_ENABLE]; 175 if (!ncm->enable) 176 return 0; 177 178 ncm->enable = 0; 179 return 0; 180 } 181 182 static int ncsi_rsp_handler_rc(struct ncsi_request *nr) 183 { 184 struct ncsi_rsp_pkt *rsp; 185 struct ncsi_dev_priv *ndp = nr->ndp; 186 struct ncsi_channel *nc; 187 unsigned long flags; 188 189 /* Find the package and channel */ 190 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 191 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 192 NULL, &nc); 193 if (!nc) 194 return -ENODEV; 195 196 /* Update state for the specified channel */ 197 spin_lock_irqsave(&nc->lock, flags); 198 nc->state = NCSI_CHANNEL_INACTIVE; 199 spin_unlock_irqrestore(&nc->lock, flags); 200 201 return 0; 202 } 203 204 static int ncsi_rsp_handler_ecnt(struct ncsi_request *nr) 205 { 206 struct ncsi_rsp_pkt *rsp; 207 struct ncsi_dev_priv *ndp = nr->ndp; 208 struct ncsi_channel *nc; 209 struct ncsi_channel_mode *ncm; 210 211 /* Find the package and channel */ 212 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 213 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 214 NULL, &nc); 215 if (!nc) 216 return -ENODEV; 217 218 ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; 219 if (ncm->enable) 220 return 0; 221 222 ncm->enable = 1; 223 return 0; 224 } 225 226 static int ncsi_rsp_handler_dcnt(struct ncsi_request *nr) 227 { 228 struct ncsi_rsp_pkt *rsp; 229 struct ncsi_dev_priv *ndp = nr->ndp; 230 struct ncsi_channel *nc; 231 struct ncsi_channel_mode *ncm; 232 233 /* Find the package and channel */ 234 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 235 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 236 NULL, &nc); 237 if (!nc) 238 return -ENODEV; 239 240 ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; 241 if (!ncm->enable) 242 return 0; 243 244 ncm->enable = 1; 245 return 0; 246 } 247 248 static int ncsi_rsp_handler_ae(struct ncsi_request *nr) 249 { 250 struct ncsi_cmd_ae_pkt *cmd; 251 struct ncsi_rsp_pkt *rsp; 252 struct ncsi_dev_priv *ndp = nr->ndp; 253 struct ncsi_channel *nc; 254 struct ncsi_channel_mode *ncm; 255 256 /* Find the package and channel */ 257 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 258 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 259 NULL, &nc); 260 if (!nc) 261 return -ENODEV; 262 263 /* Check if the AEN has been enabled */ 264 ncm = &nc->modes[NCSI_MODE_AEN]; 265 if (ncm->enable) 266 return 0; 267 268 /* Update to AEN configuration */ 269 cmd = (struct ncsi_cmd_ae_pkt *)skb_network_header(nr->cmd); 270 ncm->enable = 1; 271 ncm->data[0] = cmd->mc_id; 272 ncm->data[1] = ntohl(cmd->mode); 273 274 return 0; 275 } 276 277 static int ncsi_rsp_handler_sl(struct ncsi_request *nr) 278 { 279 struct ncsi_cmd_sl_pkt *cmd; 280 struct ncsi_rsp_pkt *rsp; 281 struct ncsi_dev_priv *ndp = nr->ndp; 282 struct ncsi_channel *nc; 283 struct ncsi_channel_mode *ncm; 284 285 /* Find the package and channel */ 286 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 287 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 288 NULL, &nc); 289 if (!nc) 290 return -ENODEV; 291 292 cmd = (struct ncsi_cmd_sl_pkt *)skb_network_header(nr->cmd); 293 ncm = &nc->modes[NCSI_MODE_LINK]; 294 ncm->data[0] = ntohl(cmd->mode); 295 ncm->data[1] = ntohl(cmd->oem_mode); 296 297 return 0; 298 } 299 300 static int ncsi_rsp_handler_gls(struct ncsi_request *nr) 301 { 302 struct ncsi_rsp_gls_pkt *rsp; 303 struct ncsi_dev_priv *ndp = nr->ndp; 304 struct ncsi_channel *nc; 305 struct ncsi_channel_mode *ncm; 306 unsigned long flags; 307 308 /* Find the package and channel */ 309 rsp = (struct ncsi_rsp_gls_pkt *)skb_network_header(nr->rsp); 310 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 311 NULL, &nc); 312 if (!nc) 313 return -ENODEV; 314 315 ncm = &nc->modes[NCSI_MODE_LINK]; 316 ncm->data[2] = ntohl(rsp->status); 317 ncm->data[3] = ntohl(rsp->other); 318 ncm->data[4] = ntohl(rsp->oem_status); 319 320 if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN) 321 return 0; 322 323 /* Reset the channel monitor if it has been enabled */ 324 spin_lock_irqsave(&nc->lock, flags); 325 nc->monitor.state = NCSI_CHANNEL_MONITOR_START; 326 spin_unlock_irqrestore(&nc->lock, flags); 327 328 return 0; 329 } 330 331 static int ncsi_rsp_handler_svf(struct ncsi_request *nr) 332 { 333 struct ncsi_cmd_svf_pkt *cmd; 334 struct ncsi_rsp_pkt *rsp; 335 struct ncsi_dev_priv *ndp = nr->ndp; 336 struct ncsi_channel *nc; 337 struct ncsi_channel_vlan_filter *ncf; 338 unsigned long flags; 339 void *bitmap; 340 341 /* Find the package and channel */ 342 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 343 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 344 NULL, &nc); 345 if (!nc) 346 return -ENODEV; 347 348 cmd = (struct ncsi_cmd_svf_pkt *)skb_network_header(nr->cmd); 349 ncf = &nc->vlan_filter; 350 if (cmd->index == 0 || cmd->index > ncf->n_vids) 351 return -ERANGE; 352 353 /* Add or remove the VLAN filter. Remember HW indexes from 1 */ 354 spin_lock_irqsave(&nc->lock, flags); 355 bitmap = &ncf->bitmap; 356 if (!(cmd->enable & 0x1)) { 357 if (test_and_clear_bit(cmd->index - 1, bitmap)) 358 ncf->vids[cmd->index - 1] = 0; 359 } else { 360 set_bit(cmd->index - 1, bitmap); 361 ncf->vids[cmd->index - 1] = ntohs(cmd->vlan); 362 } 363 spin_unlock_irqrestore(&nc->lock, flags); 364 365 return 0; 366 } 367 368 static int ncsi_rsp_handler_ev(struct ncsi_request *nr) 369 { 370 struct ncsi_cmd_ev_pkt *cmd; 371 struct ncsi_rsp_pkt *rsp; 372 struct ncsi_dev_priv *ndp = nr->ndp; 373 struct ncsi_channel *nc; 374 struct ncsi_channel_mode *ncm; 375 376 /* Find the package and channel */ 377 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 378 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 379 NULL, &nc); 380 if (!nc) 381 return -ENODEV; 382 383 /* Check if VLAN mode has been enabled */ 384 ncm = &nc->modes[NCSI_MODE_VLAN]; 385 if (ncm->enable) 386 return 0; 387 388 /* Update to VLAN mode */ 389 cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd); 390 ncm->enable = 1; 391 ncm->data[0] = ntohl(cmd->mode); 392 393 return 0; 394 } 395 396 static int ncsi_rsp_handler_dv(struct ncsi_request *nr) 397 { 398 struct ncsi_rsp_pkt *rsp; 399 struct ncsi_dev_priv *ndp = nr->ndp; 400 struct ncsi_channel *nc; 401 struct ncsi_channel_mode *ncm; 402 403 /* Find the package and channel */ 404 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 405 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 406 NULL, &nc); 407 if (!nc) 408 return -ENODEV; 409 410 /* Check if VLAN mode has been enabled */ 411 ncm = &nc->modes[NCSI_MODE_VLAN]; 412 if (!ncm->enable) 413 return 0; 414 415 /* Update to VLAN mode */ 416 ncm->enable = 0; 417 return 0; 418 } 419 420 static int ncsi_rsp_handler_sma(struct ncsi_request *nr) 421 { 422 struct ncsi_cmd_sma_pkt *cmd; 423 struct ncsi_rsp_pkt *rsp; 424 struct ncsi_dev_priv *ndp = nr->ndp; 425 struct ncsi_channel *nc; 426 struct ncsi_channel_mac_filter *ncf; 427 unsigned long flags; 428 void *bitmap; 429 bool enabled; 430 int index; 431 432 433 /* Find the package and channel */ 434 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 435 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 436 NULL, &nc); 437 if (!nc) 438 return -ENODEV; 439 440 /* According to NCSI spec 1.01, the mixed filter table 441 * isn't supported yet. 442 */ 443 cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd); 444 enabled = cmd->at_e & 0x1; 445 ncf = &nc->mac_filter; 446 bitmap = &ncf->bitmap; 447 448 if (cmd->index == 0 || 449 cmd->index > ncf->n_uc + ncf->n_mc + ncf->n_mixed) 450 return -ERANGE; 451 452 index = (cmd->index - 1) * ETH_ALEN; 453 spin_lock_irqsave(&nc->lock, flags); 454 if (enabled) { 455 set_bit(cmd->index - 1, bitmap); 456 memcpy(&ncf->addrs[index], cmd->mac, ETH_ALEN); 457 } else { 458 clear_bit(cmd->index - 1, bitmap); 459 memset(&ncf->addrs[index], 0, ETH_ALEN); 460 } 461 spin_unlock_irqrestore(&nc->lock, flags); 462 463 return 0; 464 } 465 466 static int ncsi_rsp_handler_ebf(struct ncsi_request *nr) 467 { 468 struct ncsi_cmd_ebf_pkt *cmd; 469 struct ncsi_rsp_pkt *rsp; 470 struct ncsi_dev_priv *ndp = nr->ndp; 471 struct ncsi_channel *nc; 472 struct ncsi_channel_mode *ncm; 473 474 /* Find the package and channel */ 475 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 476 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); 477 if (!nc) 478 return -ENODEV; 479 480 /* Check if broadcast filter has been enabled */ 481 ncm = &nc->modes[NCSI_MODE_BC]; 482 if (ncm->enable) 483 return 0; 484 485 /* Update to broadcast filter mode */ 486 cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd); 487 ncm->enable = 1; 488 ncm->data[0] = ntohl(cmd->mode); 489 490 return 0; 491 } 492 493 static int ncsi_rsp_handler_dbf(struct ncsi_request *nr) 494 { 495 struct ncsi_rsp_pkt *rsp; 496 struct ncsi_dev_priv *ndp = nr->ndp; 497 struct ncsi_channel *nc; 498 struct ncsi_channel_mode *ncm; 499 500 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 501 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 502 NULL, &nc); 503 if (!nc) 504 return -ENODEV; 505 506 /* Check if broadcast filter isn't enabled */ 507 ncm = &nc->modes[NCSI_MODE_BC]; 508 if (!ncm->enable) 509 return 0; 510 511 /* Update to broadcast filter mode */ 512 ncm->enable = 0; 513 ncm->data[0] = 0; 514 515 return 0; 516 } 517 518 static int ncsi_rsp_handler_egmf(struct ncsi_request *nr) 519 { 520 struct ncsi_cmd_egmf_pkt *cmd; 521 struct ncsi_rsp_pkt *rsp; 522 struct ncsi_dev_priv *ndp = nr->ndp; 523 struct ncsi_channel *nc; 524 struct ncsi_channel_mode *ncm; 525 526 /* Find the channel */ 527 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 528 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 529 NULL, &nc); 530 if (!nc) 531 return -ENODEV; 532 533 /* Check if multicast filter has been enabled */ 534 ncm = &nc->modes[NCSI_MODE_MC]; 535 if (ncm->enable) 536 return 0; 537 538 /* Update to multicast filter mode */ 539 cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd); 540 ncm->enable = 1; 541 ncm->data[0] = ntohl(cmd->mode); 542 543 return 0; 544 } 545 546 static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr) 547 { 548 struct ncsi_rsp_pkt *rsp; 549 struct ncsi_dev_priv *ndp = nr->ndp; 550 struct ncsi_channel *nc; 551 struct ncsi_channel_mode *ncm; 552 553 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 554 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 555 NULL, &nc); 556 if (!nc) 557 return -ENODEV; 558 559 /* Check if multicast filter has been enabled */ 560 ncm = &nc->modes[NCSI_MODE_MC]; 561 if (!ncm->enable) 562 return 0; 563 564 /* Update to multicast filter mode */ 565 ncm->enable = 0; 566 ncm->data[0] = 0; 567 568 return 0; 569 } 570 571 static int ncsi_rsp_handler_snfc(struct ncsi_request *nr) 572 { 573 struct ncsi_cmd_snfc_pkt *cmd; 574 struct ncsi_rsp_pkt *rsp; 575 struct ncsi_dev_priv *ndp = nr->ndp; 576 struct ncsi_channel *nc; 577 struct ncsi_channel_mode *ncm; 578 579 /* Find the channel */ 580 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 581 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 582 NULL, &nc); 583 if (!nc) 584 return -ENODEV; 585 586 /* Check if flow control has been enabled */ 587 ncm = &nc->modes[NCSI_MODE_FC]; 588 if (ncm->enable) 589 return 0; 590 591 /* Update to flow control mode */ 592 cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd); 593 ncm->enable = 1; 594 ncm->data[0] = cmd->mode; 595 596 return 0; 597 } 598 599 static struct ncsi_rsp_oem_handler { 600 unsigned int mfr_id; 601 int (*handler)(struct ncsi_request *nr); 602 } ncsi_rsp_oem_handlers[] = { 603 { NCSI_OEM_MFR_MLX_ID, NULL }, 604 { NCSI_OEM_MFR_BCM_ID, NULL } 605 }; 606 607 /* Response handler for OEM command */ 608 static int ncsi_rsp_handler_oem(struct ncsi_request *nr) 609 { 610 struct ncsi_rsp_oem_pkt *rsp; 611 struct ncsi_rsp_oem_handler *nrh = NULL; 612 unsigned int mfr_id, i; 613 614 /* Get the response header */ 615 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp); 616 mfr_id = ntohl(rsp->mfr_id); 617 618 /* Check for manufacturer id and Find the handler */ 619 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_oem_handlers); i++) { 620 if (ncsi_rsp_oem_handlers[i].mfr_id == mfr_id) { 621 if (ncsi_rsp_oem_handlers[i].handler) 622 nrh = &ncsi_rsp_oem_handlers[i]; 623 else 624 nrh = NULL; 625 626 break; 627 } 628 } 629 630 if (!nrh) { 631 netdev_err(nr->ndp->ndev.dev, "Received unrecognized OEM packet with MFR-ID (0x%x)\n", 632 mfr_id); 633 return -ENOENT; 634 } 635 636 /* Process the packet */ 637 return nrh->handler(nr); 638 } 639 640 static int ncsi_rsp_handler_gvi(struct ncsi_request *nr) 641 { 642 struct ncsi_rsp_gvi_pkt *rsp; 643 struct ncsi_dev_priv *ndp = nr->ndp; 644 struct ncsi_channel *nc; 645 struct ncsi_channel_version *ncv; 646 int i; 647 648 /* Find the channel */ 649 rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp); 650 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 651 NULL, &nc); 652 if (!nc) 653 return -ENODEV; 654 655 /* Update to channel's version info */ 656 ncv = &nc->version; 657 ncv->version = ntohl(rsp->ncsi_version); 658 ncv->alpha2 = rsp->alpha2; 659 memcpy(ncv->fw_name, rsp->fw_name, 12); 660 ncv->fw_version = ntohl(rsp->fw_version); 661 for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++) 662 ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]); 663 ncv->mf_id = ntohl(rsp->mf_id); 664 665 return 0; 666 } 667 668 static int ncsi_rsp_handler_gc(struct ncsi_request *nr) 669 { 670 struct ncsi_rsp_gc_pkt *rsp; 671 struct ncsi_dev_priv *ndp = nr->ndp; 672 struct ncsi_channel *nc; 673 size_t size; 674 675 /* Find the channel */ 676 rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp); 677 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 678 NULL, &nc); 679 if (!nc) 680 return -ENODEV; 681 682 /* Update channel's capabilities */ 683 nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) & 684 NCSI_CAP_GENERIC_MASK; 685 nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) & 686 NCSI_CAP_BC_MASK; 687 nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) & 688 NCSI_CAP_MC_MASK; 689 nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap); 690 nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) & 691 NCSI_CAP_AEN_MASK; 692 nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode & 693 NCSI_CAP_VLAN_MASK; 694 695 size = (rsp->uc_cnt + rsp->mc_cnt + rsp->mixed_cnt) * ETH_ALEN; 696 nc->mac_filter.addrs = kzalloc(size, GFP_ATOMIC); 697 if (!nc->mac_filter.addrs) 698 return -ENOMEM; 699 nc->mac_filter.n_uc = rsp->uc_cnt; 700 nc->mac_filter.n_mc = rsp->mc_cnt; 701 nc->mac_filter.n_mixed = rsp->mixed_cnt; 702 703 nc->vlan_filter.vids = kcalloc(rsp->vlan_cnt, 704 sizeof(*nc->vlan_filter.vids), 705 GFP_ATOMIC); 706 if (!nc->vlan_filter.vids) 707 return -ENOMEM; 708 /* Set VLAN filters active so they are cleared in the first 709 * configuration state 710 */ 711 nc->vlan_filter.bitmap = U64_MAX; 712 nc->vlan_filter.n_vids = rsp->vlan_cnt; 713 714 return 0; 715 } 716 717 static int ncsi_rsp_handler_gp(struct ncsi_request *nr) 718 { 719 struct ncsi_channel_vlan_filter *ncvf; 720 struct ncsi_channel_mac_filter *ncmf; 721 struct ncsi_dev_priv *ndp = nr->ndp; 722 struct ncsi_rsp_gp_pkt *rsp; 723 struct ncsi_channel *nc; 724 unsigned short enable; 725 unsigned char *pdata; 726 unsigned long flags; 727 void *bitmap; 728 int i; 729 730 /* Find the channel */ 731 rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp); 732 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 733 NULL, &nc); 734 if (!nc) 735 return -ENODEV; 736 737 /* Modes with explicit enabled indications */ 738 if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */ 739 nc->modes[NCSI_MODE_BC].enable = 1; 740 nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode); 741 } 742 if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */ 743 nc->modes[NCSI_MODE_ENABLE].enable = 1; 744 if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */ 745 nc->modes[NCSI_MODE_TX_ENABLE].enable = 1; 746 if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */ 747 nc->modes[NCSI_MODE_MC].enable = 1; 748 749 /* Modes without explicit enabled indications */ 750 nc->modes[NCSI_MODE_LINK].enable = 1; 751 nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode); 752 nc->modes[NCSI_MODE_VLAN].enable = 1; 753 nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode; 754 nc->modes[NCSI_MODE_FC].enable = 1; 755 nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode; 756 nc->modes[NCSI_MODE_AEN].enable = 1; 757 nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode); 758 759 /* MAC addresses filter table */ 760 pdata = (unsigned char *)rsp + 48; 761 enable = rsp->mac_enable; 762 ncmf = &nc->mac_filter; 763 spin_lock_irqsave(&nc->lock, flags); 764 bitmap = &ncmf->bitmap; 765 for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) { 766 if (!(enable & (0x1 << i))) 767 clear_bit(i, bitmap); 768 else 769 set_bit(i, bitmap); 770 771 memcpy(&ncmf->addrs[i * ETH_ALEN], pdata, ETH_ALEN); 772 } 773 spin_unlock_irqrestore(&nc->lock, flags); 774 775 /* VLAN filter table */ 776 enable = ntohs(rsp->vlan_enable); 777 ncvf = &nc->vlan_filter; 778 bitmap = &ncvf->bitmap; 779 spin_lock_irqsave(&nc->lock, flags); 780 for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) { 781 if (!(enable & (0x1 << i))) 782 clear_bit(i, bitmap); 783 else 784 set_bit(i, bitmap); 785 786 ncvf->vids[i] = ntohs(*(__be16 *)pdata); 787 } 788 spin_unlock_irqrestore(&nc->lock, flags); 789 790 return 0; 791 } 792 793 static int ncsi_rsp_handler_gcps(struct ncsi_request *nr) 794 { 795 struct ncsi_rsp_gcps_pkt *rsp; 796 struct ncsi_dev_priv *ndp = nr->ndp; 797 struct ncsi_channel *nc; 798 struct ncsi_channel_stats *ncs; 799 800 /* Find the channel */ 801 rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp); 802 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 803 NULL, &nc); 804 if (!nc) 805 return -ENODEV; 806 807 /* Update HNC's statistics */ 808 ncs = &nc->stats; 809 ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi); 810 ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo); 811 ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes); 812 ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes); 813 ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts); 814 ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts); 815 ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts); 816 ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts); 817 ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts); 818 ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts); 819 ncs->hnc_fcs_err = ntohl(rsp->fcs_err); 820 ncs->hnc_align_err = ntohl(rsp->align_err); 821 ncs->hnc_false_carrier = ntohl(rsp->false_carrier); 822 ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts); 823 ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts); 824 ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon); 825 ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff); 826 ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon); 827 ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff); 828 ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision); 829 ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision); 830 ncs->hnc_l_collision = ntohl(rsp->l_collision); 831 ncs->hnc_e_collision = ntohl(rsp->e_collision); 832 ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames); 833 ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames); 834 ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames); 835 ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames); 836 ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames); 837 ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames); 838 ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames); 839 ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames); 840 ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames); 841 ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames); 842 ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames); 843 ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames); 844 ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames); 845 ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames); 846 ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames); 847 ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes); 848 ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts); 849 ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts); 850 851 return 0; 852 } 853 854 static int ncsi_rsp_handler_gns(struct ncsi_request *nr) 855 { 856 struct ncsi_rsp_gns_pkt *rsp; 857 struct ncsi_dev_priv *ndp = nr->ndp; 858 struct ncsi_channel *nc; 859 struct ncsi_channel_stats *ncs; 860 861 /* Find the channel */ 862 rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp); 863 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 864 NULL, &nc); 865 if (!nc) 866 return -ENODEV; 867 868 /* Update HNC's statistics */ 869 ncs = &nc->stats; 870 ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds); 871 ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds); 872 ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs); 873 ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs); 874 ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts); 875 ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts); 876 ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts); 877 878 return 0; 879 } 880 881 static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr) 882 { 883 struct ncsi_rsp_gnpts_pkt *rsp; 884 struct ncsi_dev_priv *ndp = nr->ndp; 885 struct ncsi_channel *nc; 886 struct ncsi_channel_stats *ncs; 887 888 /* Find the channel */ 889 rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp); 890 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 891 NULL, &nc); 892 if (!nc) 893 return -ENODEV; 894 895 /* Update HNC's statistics */ 896 ncs = &nc->stats; 897 ncs->pt_tx_pkts = ntohl(rsp->tx_pkts); 898 ncs->pt_tx_dropped = ntohl(rsp->tx_dropped); 899 ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err); 900 ncs->pt_tx_us_err = ntohl(rsp->tx_us_err); 901 ncs->pt_rx_pkts = ntohl(rsp->rx_pkts); 902 ncs->pt_rx_dropped = ntohl(rsp->rx_dropped); 903 ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err); 904 ncs->pt_rx_us_err = ntohl(rsp->rx_us_err); 905 ncs->pt_rx_os_err = ntohl(rsp->rx_os_err); 906 907 return 0; 908 } 909 910 static int ncsi_rsp_handler_gps(struct ncsi_request *nr) 911 { 912 struct ncsi_rsp_gps_pkt *rsp; 913 struct ncsi_dev_priv *ndp = nr->ndp; 914 struct ncsi_package *np; 915 916 /* Find the package */ 917 rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp); 918 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 919 &np, NULL); 920 if (!np) 921 return -ENODEV; 922 923 return 0; 924 } 925 926 static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr) 927 { 928 struct ncsi_rsp_gpuuid_pkt *rsp; 929 struct ncsi_dev_priv *ndp = nr->ndp; 930 struct ncsi_package *np; 931 932 /* Find the package */ 933 rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp); 934 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 935 &np, NULL); 936 if (!np) 937 return -ENODEV; 938 939 memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid)); 940 941 return 0; 942 } 943 944 static struct ncsi_rsp_handler { 945 unsigned char type; 946 int payload; 947 int (*handler)(struct ncsi_request *nr); 948 } ncsi_rsp_handlers[] = { 949 { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis }, 950 { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp }, 951 { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp }, 952 { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec }, 953 { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc }, 954 { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc }, 955 { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt }, 956 { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt }, 957 { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae }, 958 { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl }, 959 { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls }, 960 { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf }, 961 { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev }, 962 { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv }, 963 { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma }, 964 { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf }, 965 { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf }, 966 { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf }, 967 { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf }, 968 { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc }, 969 { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi }, 970 { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc }, 971 { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp }, 972 { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps }, 973 { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns }, 974 { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts }, 975 { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps }, 976 { NCSI_PKT_RSP_OEM, -1, ncsi_rsp_handler_oem }, 977 { NCSI_PKT_RSP_PLDM, 0, NULL }, 978 { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid } 979 }; 980 981 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev, 982 struct packet_type *pt, struct net_device *orig_dev) 983 { 984 struct ncsi_rsp_handler *nrh = NULL; 985 struct ncsi_dev *nd; 986 struct ncsi_dev_priv *ndp; 987 struct ncsi_request *nr; 988 struct ncsi_pkt_hdr *hdr; 989 unsigned long flags; 990 int payload, i, ret; 991 992 /* Find the NCSI device */ 993 nd = ncsi_find_dev(dev); 994 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL; 995 if (!ndp) 996 return -ENODEV; 997 998 /* Check if it is AEN packet */ 999 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb); 1000 if (hdr->type == NCSI_PKT_AEN) 1001 return ncsi_aen_handler(ndp, skb); 1002 1003 /* Find the handler */ 1004 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) { 1005 if (ncsi_rsp_handlers[i].type == hdr->type) { 1006 if (ncsi_rsp_handlers[i].handler) 1007 nrh = &ncsi_rsp_handlers[i]; 1008 else 1009 nrh = NULL; 1010 1011 break; 1012 } 1013 } 1014 1015 if (!nrh) { 1016 netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n", 1017 hdr->type); 1018 return -ENOENT; 1019 } 1020 1021 /* Associate with the request */ 1022 spin_lock_irqsave(&ndp->lock, flags); 1023 nr = &ndp->requests[hdr->id]; 1024 if (!nr->used) { 1025 spin_unlock_irqrestore(&ndp->lock, flags); 1026 return -ENODEV; 1027 } 1028 1029 nr->rsp = skb; 1030 if (!nr->enabled) { 1031 spin_unlock_irqrestore(&ndp->lock, flags); 1032 ret = -ENOENT; 1033 goto out; 1034 } 1035 1036 /* Validate the packet */ 1037 spin_unlock_irqrestore(&ndp->lock, flags); 1038 payload = nrh->payload; 1039 if (payload < 0) 1040 payload = ntohs(hdr->length); 1041 ret = ncsi_validate_rsp_pkt(nr, payload); 1042 if (ret) { 1043 netdev_warn(ndp->ndev.dev, 1044 "NCSI: 'bad' packet ignored for type 0x%x\n", 1045 hdr->type); 1046 goto out; 1047 } 1048 1049 /* Process the packet */ 1050 ret = nrh->handler(nr); 1051 if (ret) 1052 netdev_err(ndp->ndev.dev, 1053 "NCSI: Handler for packet type 0x%x returned %d\n", 1054 hdr->type, ret); 1055 out: 1056 ncsi_free_request(nr); 1057 return ret; 1058 } 1059