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_filter *ncf; 338 unsigned short vlan; 339 int ret; 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->filters[NCSI_FILTER_VLAN]; 350 if (!ncf) 351 return -ENOENT; 352 if (cmd->index >= ncf->total) 353 return -ERANGE; 354 355 /* Add or remove the VLAN filter */ 356 if (!(cmd->enable & 0x1)) { 357 /* HW indexes from 1 */ 358 ret = ncsi_remove_filter(nc, NCSI_FILTER_VLAN, cmd->index - 1); 359 } else { 360 vlan = ntohs(cmd->vlan); 361 ret = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan); 362 } 363 364 return ret; 365 } 366 367 static int ncsi_rsp_handler_ev(struct ncsi_request *nr) 368 { 369 struct ncsi_cmd_ev_pkt *cmd; 370 struct ncsi_rsp_pkt *rsp; 371 struct ncsi_dev_priv *ndp = nr->ndp; 372 struct ncsi_channel *nc; 373 struct ncsi_channel_mode *ncm; 374 375 /* Find the package and channel */ 376 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 377 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 378 NULL, &nc); 379 if (!nc) 380 return -ENODEV; 381 382 /* Check if VLAN mode has been enabled */ 383 ncm = &nc->modes[NCSI_MODE_VLAN]; 384 if (ncm->enable) 385 return 0; 386 387 /* Update to VLAN mode */ 388 cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd); 389 ncm->enable = 1; 390 ncm->data[0] = ntohl(cmd->mode); 391 392 return 0; 393 } 394 395 static int ncsi_rsp_handler_dv(struct ncsi_request *nr) 396 { 397 struct ncsi_rsp_pkt *rsp; 398 struct ncsi_dev_priv *ndp = nr->ndp; 399 struct ncsi_channel *nc; 400 struct ncsi_channel_mode *ncm; 401 402 /* Find the package and channel */ 403 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 404 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 405 NULL, &nc); 406 if (!nc) 407 return -ENODEV; 408 409 /* Check if VLAN mode has been enabled */ 410 ncm = &nc->modes[NCSI_MODE_VLAN]; 411 if (!ncm->enable) 412 return 0; 413 414 /* Update to VLAN mode */ 415 ncm->enable = 0; 416 return 0; 417 } 418 419 static int ncsi_rsp_handler_sma(struct ncsi_request *nr) 420 { 421 struct ncsi_cmd_sma_pkt *cmd; 422 struct ncsi_rsp_pkt *rsp; 423 struct ncsi_dev_priv *ndp = nr->ndp; 424 struct ncsi_channel *nc; 425 struct ncsi_channel_filter *ncf; 426 void *bitmap; 427 428 /* Find the package and channel */ 429 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 430 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 431 NULL, &nc); 432 if (!nc) 433 return -ENODEV; 434 435 /* According to NCSI spec 1.01, the mixed filter table 436 * isn't supported yet. 437 */ 438 cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd); 439 switch (cmd->at_e >> 5) { 440 case 0x0: /* UC address */ 441 ncf = nc->filters[NCSI_FILTER_UC]; 442 break; 443 case 0x1: /* MC address */ 444 ncf = nc->filters[NCSI_FILTER_MC]; 445 break; 446 default: 447 return -EINVAL; 448 } 449 450 /* Sanity check on the filter */ 451 if (!ncf) 452 return -ENOENT; 453 else if (cmd->index >= ncf->total) 454 return -ERANGE; 455 456 bitmap = &ncf->bitmap; 457 if (cmd->at_e & 0x1) { 458 set_bit(cmd->index, bitmap); 459 memcpy(ncf->data + 6 * cmd->index, cmd->mac, 6); 460 } else { 461 clear_bit(cmd->index, bitmap); 462 memset(ncf->data + 6 * cmd->index, 0, 6); 463 } 464 465 return 0; 466 } 467 468 static int ncsi_rsp_handler_ebf(struct ncsi_request *nr) 469 { 470 struct ncsi_cmd_ebf_pkt *cmd; 471 struct ncsi_rsp_pkt *rsp; 472 struct ncsi_dev_priv *ndp = nr->ndp; 473 struct ncsi_channel *nc; 474 struct ncsi_channel_mode *ncm; 475 476 /* Find the package and channel */ 477 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 478 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); 479 if (!nc) 480 return -ENODEV; 481 482 /* Check if broadcast filter has been enabled */ 483 ncm = &nc->modes[NCSI_MODE_BC]; 484 if (ncm->enable) 485 return 0; 486 487 /* Update to broadcast filter mode */ 488 cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd); 489 ncm->enable = 1; 490 ncm->data[0] = ntohl(cmd->mode); 491 492 return 0; 493 } 494 495 static int ncsi_rsp_handler_dbf(struct ncsi_request *nr) 496 { 497 struct ncsi_rsp_pkt *rsp; 498 struct ncsi_dev_priv *ndp = nr->ndp; 499 struct ncsi_channel *nc; 500 struct ncsi_channel_mode *ncm; 501 502 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 503 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 504 NULL, &nc); 505 if (!nc) 506 return -ENODEV; 507 508 /* Check if broadcast filter isn't enabled */ 509 ncm = &nc->modes[NCSI_MODE_BC]; 510 if (!ncm->enable) 511 return 0; 512 513 /* Update to broadcast filter mode */ 514 ncm->enable = 0; 515 ncm->data[0] = 0; 516 517 return 0; 518 } 519 520 static int ncsi_rsp_handler_egmf(struct ncsi_request *nr) 521 { 522 struct ncsi_cmd_egmf_pkt *cmd; 523 struct ncsi_rsp_pkt *rsp; 524 struct ncsi_dev_priv *ndp = nr->ndp; 525 struct ncsi_channel *nc; 526 struct ncsi_channel_mode *ncm; 527 528 /* Find the channel */ 529 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 530 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 531 NULL, &nc); 532 if (!nc) 533 return -ENODEV; 534 535 /* Check if multicast filter has been enabled */ 536 ncm = &nc->modes[NCSI_MODE_MC]; 537 if (ncm->enable) 538 return 0; 539 540 /* Update to multicast filter mode */ 541 cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd); 542 ncm->enable = 1; 543 ncm->data[0] = ntohl(cmd->mode); 544 545 return 0; 546 } 547 548 static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr) 549 { 550 struct ncsi_rsp_pkt *rsp; 551 struct ncsi_dev_priv *ndp = nr->ndp; 552 struct ncsi_channel *nc; 553 struct ncsi_channel_mode *ncm; 554 555 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 556 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 557 NULL, &nc); 558 if (!nc) 559 return -ENODEV; 560 561 /* Check if multicast filter has been enabled */ 562 ncm = &nc->modes[NCSI_MODE_MC]; 563 if (!ncm->enable) 564 return 0; 565 566 /* Update to multicast filter mode */ 567 ncm->enable = 0; 568 ncm->data[0] = 0; 569 570 return 0; 571 } 572 573 static int ncsi_rsp_handler_snfc(struct ncsi_request *nr) 574 { 575 struct ncsi_cmd_snfc_pkt *cmd; 576 struct ncsi_rsp_pkt *rsp; 577 struct ncsi_dev_priv *ndp = nr->ndp; 578 struct ncsi_channel *nc; 579 struct ncsi_channel_mode *ncm; 580 581 /* Find the channel */ 582 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 583 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 584 NULL, &nc); 585 if (!nc) 586 return -ENODEV; 587 588 /* Check if flow control has been enabled */ 589 ncm = &nc->modes[NCSI_MODE_FC]; 590 if (ncm->enable) 591 return 0; 592 593 /* Update to flow control mode */ 594 cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd); 595 ncm->enable = 1; 596 ncm->data[0] = cmd->mode; 597 598 return 0; 599 } 600 601 static int ncsi_rsp_handler_gvi(struct ncsi_request *nr) 602 { 603 struct ncsi_rsp_gvi_pkt *rsp; 604 struct ncsi_dev_priv *ndp = nr->ndp; 605 struct ncsi_channel *nc; 606 struct ncsi_channel_version *ncv; 607 int i; 608 609 /* Find the channel */ 610 rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp); 611 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 612 NULL, &nc); 613 if (!nc) 614 return -ENODEV; 615 616 /* Update to channel's version info */ 617 ncv = &nc->version; 618 ncv->version = ntohl(rsp->ncsi_version); 619 ncv->alpha2 = rsp->alpha2; 620 memcpy(ncv->fw_name, rsp->fw_name, 12); 621 ncv->fw_version = ntohl(rsp->fw_version); 622 for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++) 623 ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]); 624 ncv->mf_id = ntohl(rsp->mf_id); 625 626 return 0; 627 } 628 629 static int ncsi_rsp_handler_gc(struct ncsi_request *nr) 630 { 631 struct ncsi_rsp_gc_pkt *rsp; 632 struct ncsi_dev_priv *ndp = nr->ndp; 633 struct ncsi_channel *nc; 634 struct ncsi_channel_filter *ncf; 635 size_t size, entry_size; 636 int cnt, i; 637 638 /* Find the channel */ 639 rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp); 640 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 641 NULL, &nc); 642 if (!nc) 643 return -ENODEV; 644 645 /* Update channel's capabilities */ 646 nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) & 647 NCSI_CAP_GENERIC_MASK; 648 nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) & 649 NCSI_CAP_BC_MASK; 650 nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) & 651 NCSI_CAP_MC_MASK; 652 nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap); 653 nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) & 654 NCSI_CAP_AEN_MASK; 655 nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode & 656 NCSI_CAP_VLAN_MASK; 657 658 /* Build filters */ 659 for (i = 0; i < NCSI_FILTER_MAX; i++) { 660 switch (i) { 661 case NCSI_FILTER_VLAN: 662 cnt = rsp->vlan_cnt; 663 entry_size = 2; 664 break; 665 case NCSI_FILTER_MIXED: 666 cnt = rsp->mixed_cnt; 667 entry_size = 6; 668 break; 669 case NCSI_FILTER_MC: 670 cnt = rsp->mc_cnt; 671 entry_size = 6; 672 break; 673 case NCSI_FILTER_UC: 674 cnt = rsp->uc_cnt; 675 entry_size = 6; 676 break; 677 default: 678 continue; 679 } 680 681 if (!cnt || nc->filters[i]) 682 continue; 683 684 size = sizeof(*ncf) + cnt * entry_size; 685 ncf = kzalloc(size, GFP_ATOMIC); 686 if (!ncf) { 687 pr_warn("%s: Cannot alloc filter table (%d)\n", 688 __func__, i); 689 return -ENOMEM; 690 } 691 692 ncf->index = i; 693 ncf->total = cnt; 694 if (i == NCSI_FILTER_VLAN) { 695 /* Set VLAN filters active so they are cleared in 696 * first configuration state 697 */ 698 ncf->bitmap = U64_MAX; 699 } else { 700 ncf->bitmap = 0x0ul; 701 } 702 nc->filters[i] = ncf; 703 } 704 705 return 0; 706 } 707 708 static int ncsi_rsp_handler_gp(struct ncsi_request *nr) 709 { 710 struct ncsi_rsp_gp_pkt *rsp; 711 struct ncsi_dev_priv *ndp = nr->ndp; 712 struct ncsi_channel *nc; 713 unsigned short enable, vlan; 714 unsigned char *pdata; 715 int table, i; 716 717 /* Find the channel */ 718 rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp); 719 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 720 NULL, &nc); 721 if (!nc) 722 return -ENODEV; 723 724 /* Modes with explicit enabled indications */ 725 if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */ 726 nc->modes[NCSI_MODE_BC].enable = 1; 727 nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode); 728 } 729 if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */ 730 nc->modes[NCSI_MODE_ENABLE].enable = 1; 731 if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */ 732 nc->modes[NCSI_MODE_TX_ENABLE].enable = 1; 733 if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */ 734 nc->modes[NCSI_MODE_MC].enable = 1; 735 736 /* Modes without explicit enabled indications */ 737 nc->modes[NCSI_MODE_LINK].enable = 1; 738 nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode); 739 nc->modes[NCSI_MODE_VLAN].enable = 1; 740 nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode; 741 nc->modes[NCSI_MODE_FC].enable = 1; 742 nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode; 743 nc->modes[NCSI_MODE_AEN].enable = 1; 744 nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode); 745 746 /* MAC addresses filter table */ 747 pdata = (unsigned char *)rsp + 48; 748 enable = rsp->mac_enable; 749 for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) { 750 if (i >= (nc->filters[NCSI_FILTER_UC]->total + 751 nc->filters[NCSI_FILTER_MC]->total)) 752 table = NCSI_FILTER_MIXED; 753 else if (i >= nc->filters[NCSI_FILTER_UC]->total) 754 table = NCSI_FILTER_MC; 755 else 756 table = NCSI_FILTER_UC; 757 758 if (!(enable & (0x1 << i))) 759 continue; 760 761 if (ncsi_find_filter(nc, table, pdata) >= 0) 762 continue; 763 764 ncsi_add_filter(nc, table, pdata); 765 } 766 767 /* VLAN filter table */ 768 enable = ntohs(rsp->vlan_enable); 769 for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) { 770 if (!(enable & (0x1 << i))) 771 continue; 772 773 vlan = ntohs(*(__be16 *)pdata); 774 if (ncsi_find_filter(nc, NCSI_FILTER_VLAN, &vlan) >= 0) 775 continue; 776 777 ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan); 778 } 779 780 return 0; 781 } 782 783 static int ncsi_rsp_handler_gcps(struct ncsi_request *nr) 784 { 785 struct ncsi_rsp_gcps_pkt *rsp; 786 struct ncsi_dev_priv *ndp = nr->ndp; 787 struct ncsi_channel *nc; 788 struct ncsi_channel_stats *ncs; 789 790 /* Find the channel */ 791 rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp); 792 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 793 NULL, &nc); 794 if (!nc) 795 return -ENODEV; 796 797 /* Update HNC's statistics */ 798 ncs = &nc->stats; 799 ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi); 800 ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo); 801 ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes); 802 ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes); 803 ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts); 804 ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts); 805 ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts); 806 ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts); 807 ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts); 808 ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts); 809 ncs->hnc_fcs_err = ntohl(rsp->fcs_err); 810 ncs->hnc_align_err = ntohl(rsp->align_err); 811 ncs->hnc_false_carrier = ntohl(rsp->false_carrier); 812 ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts); 813 ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts); 814 ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon); 815 ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff); 816 ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon); 817 ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff); 818 ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision); 819 ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision); 820 ncs->hnc_l_collision = ntohl(rsp->l_collision); 821 ncs->hnc_e_collision = ntohl(rsp->e_collision); 822 ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames); 823 ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames); 824 ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames); 825 ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames); 826 ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames); 827 ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames); 828 ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames); 829 ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames); 830 ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames); 831 ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames); 832 ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames); 833 ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames); 834 ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames); 835 ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames); 836 ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames); 837 ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes); 838 ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts); 839 ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts); 840 841 return 0; 842 } 843 844 static int ncsi_rsp_handler_gns(struct ncsi_request *nr) 845 { 846 struct ncsi_rsp_gns_pkt *rsp; 847 struct ncsi_dev_priv *ndp = nr->ndp; 848 struct ncsi_channel *nc; 849 struct ncsi_channel_stats *ncs; 850 851 /* Find the channel */ 852 rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp); 853 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 854 NULL, &nc); 855 if (!nc) 856 return -ENODEV; 857 858 /* Update HNC's statistics */ 859 ncs = &nc->stats; 860 ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds); 861 ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds); 862 ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs); 863 ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs); 864 ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts); 865 ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts); 866 ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts); 867 868 return 0; 869 } 870 871 static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr) 872 { 873 struct ncsi_rsp_gnpts_pkt *rsp; 874 struct ncsi_dev_priv *ndp = nr->ndp; 875 struct ncsi_channel *nc; 876 struct ncsi_channel_stats *ncs; 877 878 /* Find the channel */ 879 rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp); 880 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 881 NULL, &nc); 882 if (!nc) 883 return -ENODEV; 884 885 /* Update HNC's statistics */ 886 ncs = &nc->stats; 887 ncs->pt_tx_pkts = ntohl(rsp->tx_pkts); 888 ncs->pt_tx_dropped = ntohl(rsp->tx_dropped); 889 ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err); 890 ncs->pt_tx_us_err = ntohl(rsp->tx_us_err); 891 ncs->pt_rx_pkts = ntohl(rsp->rx_pkts); 892 ncs->pt_rx_dropped = ntohl(rsp->rx_dropped); 893 ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err); 894 ncs->pt_rx_us_err = ntohl(rsp->rx_us_err); 895 ncs->pt_rx_os_err = ntohl(rsp->rx_os_err); 896 897 return 0; 898 } 899 900 static int ncsi_rsp_handler_gps(struct ncsi_request *nr) 901 { 902 struct ncsi_rsp_gps_pkt *rsp; 903 struct ncsi_dev_priv *ndp = nr->ndp; 904 struct ncsi_package *np; 905 906 /* Find the package */ 907 rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp); 908 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 909 &np, NULL); 910 if (!np) 911 return -ENODEV; 912 913 return 0; 914 } 915 916 static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr) 917 { 918 struct ncsi_rsp_gpuuid_pkt *rsp; 919 struct ncsi_dev_priv *ndp = nr->ndp; 920 struct ncsi_package *np; 921 922 /* Find the package */ 923 rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp); 924 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 925 &np, NULL); 926 if (!np) 927 return -ENODEV; 928 929 memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid)); 930 931 return 0; 932 } 933 934 static struct ncsi_rsp_handler { 935 unsigned char type; 936 int payload; 937 int (*handler)(struct ncsi_request *nr); 938 } ncsi_rsp_handlers[] = { 939 { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis }, 940 { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp }, 941 { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp }, 942 { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec }, 943 { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc }, 944 { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc }, 945 { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt }, 946 { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt }, 947 { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae }, 948 { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl }, 949 { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls }, 950 { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf }, 951 { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev }, 952 { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv }, 953 { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma }, 954 { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf }, 955 { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf }, 956 { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf }, 957 { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf }, 958 { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc }, 959 { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi }, 960 { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc }, 961 { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp }, 962 { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps }, 963 { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns }, 964 { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts }, 965 { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps }, 966 { NCSI_PKT_RSP_OEM, 0, NULL }, 967 { NCSI_PKT_RSP_PLDM, 0, NULL }, 968 { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid } 969 }; 970 971 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev, 972 struct packet_type *pt, struct net_device *orig_dev) 973 { 974 struct ncsi_rsp_handler *nrh = NULL; 975 struct ncsi_dev *nd; 976 struct ncsi_dev_priv *ndp; 977 struct ncsi_request *nr; 978 struct ncsi_pkt_hdr *hdr; 979 unsigned long flags; 980 int payload, i, ret; 981 982 /* Find the NCSI device */ 983 nd = ncsi_find_dev(dev); 984 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL; 985 if (!ndp) 986 return -ENODEV; 987 988 /* Check if it is AEN packet */ 989 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb); 990 if (hdr->type == NCSI_PKT_AEN) 991 return ncsi_aen_handler(ndp, skb); 992 993 /* Find the handler */ 994 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) { 995 if (ncsi_rsp_handlers[i].type == hdr->type) { 996 if (ncsi_rsp_handlers[i].handler) 997 nrh = &ncsi_rsp_handlers[i]; 998 else 999 nrh = NULL; 1000 1001 break; 1002 } 1003 } 1004 1005 if (!nrh) { 1006 netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n", 1007 hdr->type); 1008 return -ENOENT; 1009 } 1010 1011 /* Associate with the request */ 1012 spin_lock_irqsave(&ndp->lock, flags); 1013 nr = &ndp->requests[hdr->id]; 1014 if (!nr->used) { 1015 spin_unlock_irqrestore(&ndp->lock, flags); 1016 return -ENODEV; 1017 } 1018 1019 nr->rsp = skb; 1020 if (!nr->enabled) { 1021 spin_unlock_irqrestore(&ndp->lock, flags); 1022 ret = -ENOENT; 1023 goto out; 1024 } 1025 1026 /* Validate the packet */ 1027 spin_unlock_irqrestore(&ndp->lock, flags); 1028 payload = nrh->payload; 1029 if (payload < 0) 1030 payload = ntohs(hdr->length); 1031 ret = ncsi_validate_rsp_pkt(nr, payload); 1032 if (ret) { 1033 netdev_warn(ndp->ndev.dev, 1034 "NCSI: 'bad' packet ignored for type 0x%x\n", 1035 hdr->type); 1036 goto out; 1037 } 1038 1039 /* Process the packet */ 1040 ret = nrh->handler(nr); 1041 if (ret) 1042 netdev_err(ndp->ndev.dev, 1043 "NCSI: Handler for packet type 0x%x returned %d\n", 1044 hdr->type, ret); 1045 out: 1046 ncsi_free_request(nr); 1047 return ret; 1048 } 1049