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 -EBUSY; 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 -EBUSY; 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 -EBUSY; 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 -EBUSY; 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 -EBUSY; 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 ret = ncsi_remove_filter(nc, NCSI_FILTER_VLAN, cmd->index); 358 } else { 359 vlan = ntohs(cmd->vlan); 360 ret = ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan); 361 } 362 363 return ret; 364 } 365 366 static int ncsi_rsp_handler_ev(struct ncsi_request *nr) 367 { 368 struct ncsi_cmd_ev_pkt *cmd; 369 struct ncsi_rsp_pkt *rsp; 370 struct ncsi_dev_priv *ndp = nr->ndp; 371 struct ncsi_channel *nc; 372 struct ncsi_channel_mode *ncm; 373 374 /* Find the package and channel */ 375 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 376 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 377 NULL, &nc); 378 if (!nc) 379 return -ENODEV; 380 381 /* Check if VLAN mode has been enabled */ 382 ncm = &nc->modes[NCSI_MODE_VLAN]; 383 if (ncm->enable) 384 return -EBUSY; 385 386 /* Update to VLAN mode */ 387 cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd); 388 ncm->enable = 1; 389 ncm->data[0] = ntohl(cmd->mode); 390 391 return 0; 392 } 393 394 static int ncsi_rsp_handler_dv(struct ncsi_request *nr) 395 { 396 struct ncsi_rsp_pkt *rsp; 397 struct ncsi_dev_priv *ndp = nr->ndp; 398 struct ncsi_channel *nc; 399 struct ncsi_channel_mode *ncm; 400 401 /* Find the package and channel */ 402 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 403 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 404 NULL, &nc); 405 if (!nc) 406 return -ENODEV; 407 408 /* Check if VLAN mode has been enabled */ 409 ncm = &nc->modes[NCSI_MODE_VLAN]; 410 if (!ncm->enable) 411 return -EBUSY; 412 413 /* Update to VLAN mode */ 414 ncm->enable = 0; 415 return 0; 416 } 417 418 static int ncsi_rsp_handler_sma(struct ncsi_request *nr) 419 { 420 struct ncsi_cmd_sma_pkt *cmd; 421 struct ncsi_rsp_pkt *rsp; 422 struct ncsi_dev_priv *ndp = nr->ndp; 423 struct ncsi_channel *nc; 424 struct ncsi_channel_filter *ncf; 425 void *bitmap; 426 427 /* Find the package and channel */ 428 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 429 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 430 NULL, &nc); 431 if (!nc) 432 return -ENODEV; 433 434 /* According to NCSI spec 1.01, the mixed filter table 435 * isn't supported yet. 436 */ 437 cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd); 438 switch (cmd->at_e >> 5) { 439 case 0x0: /* UC address */ 440 ncf = nc->filters[NCSI_FILTER_UC]; 441 break; 442 case 0x1: /* MC address */ 443 ncf = nc->filters[NCSI_FILTER_MC]; 444 break; 445 default: 446 return -EINVAL; 447 } 448 449 /* Sanity check on the filter */ 450 if (!ncf) 451 return -ENOENT; 452 else if (cmd->index >= ncf->total) 453 return -ERANGE; 454 455 bitmap = &ncf->bitmap; 456 if (cmd->at_e & 0x1) { 457 if (test_and_set_bit(cmd->index, bitmap)) 458 return -EBUSY; 459 memcpy(ncf->data + 6 * cmd->index, cmd->mac, 6); 460 } else { 461 if (!test_and_clear_bit(cmd->index, bitmap)) 462 return -EBUSY; 463 464 memset(ncf->data + 6 * cmd->index, 0, 6); 465 } 466 467 return 0; 468 } 469 470 static int ncsi_rsp_handler_ebf(struct ncsi_request *nr) 471 { 472 struct ncsi_cmd_ebf_pkt *cmd; 473 struct ncsi_rsp_pkt *rsp; 474 struct ncsi_dev_priv *ndp = nr->ndp; 475 struct ncsi_channel *nc; 476 struct ncsi_channel_mode *ncm; 477 478 /* Find the package and channel */ 479 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 480 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); 481 if (!nc) 482 return -ENODEV; 483 484 /* Check if broadcast filter has been enabled */ 485 ncm = &nc->modes[NCSI_MODE_BC]; 486 if (ncm->enable) 487 return -EBUSY; 488 489 /* Update to broadcast filter mode */ 490 cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd); 491 ncm->enable = 1; 492 ncm->data[0] = ntohl(cmd->mode); 493 494 return 0; 495 } 496 497 static int ncsi_rsp_handler_dbf(struct ncsi_request *nr) 498 { 499 struct ncsi_rsp_pkt *rsp; 500 struct ncsi_dev_priv *ndp = nr->ndp; 501 struct ncsi_channel *nc; 502 struct ncsi_channel_mode *ncm; 503 504 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 505 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 506 NULL, &nc); 507 if (!nc) 508 return -ENODEV; 509 510 /* Check if broadcast filter isn't enabled */ 511 ncm = &nc->modes[NCSI_MODE_BC]; 512 if (!ncm->enable) 513 return -EBUSY; 514 515 /* Update to broadcast filter mode */ 516 ncm->enable = 0; 517 ncm->data[0] = 0; 518 519 return 0; 520 } 521 522 static int ncsi_rsp_handler_egmf(struct ncsi_request *nr) 523 { 524 struct ncsi_cmd_egmf_pkt *cmd; 525 struct ncsi_rsp_pkt *rsp; 526 struct ncsi_dev_priv *ndp = nr->ndp; 527 struct ncsi_channel *nc; 528 struct ncsi_channel_mode *ncm; 529 530 /* Find the channel */ 531 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 532 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 533 NULL, &nc); 534 if (!nc) 535 return -ENODEV; 536 537 /* Check if multicast filter has been enabled */ 538 ncm = &nc->modes[NCSI_MODE_MC]; 539 if (ncm->enable) 540 return -EBUSY; 541 542 /* Update to multicast filter mode */ 543 cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd); 544 ncm->enable = 1; 545 ncm->data[0] = ntohl(cmd->mode); 546 547 return 0; 548 } 549 550 static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr) 551 { 552 struct ncsi_rsp_pkt *rsp; 553 struct ncsi_dev_priv *ndp = nr->ndp; 554 struct ncsi_channel *nc; 555 struct ncsi_channel_mode *ncm; 556 557 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 558 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 559 NULL, &nc); 560 if (!nc) 561 return -ENODEV; 562 563 /* Check if multicast filter has been enabled */ 564 ncm = &nc->modes[NCSI_MODE_MC]; 565 if (!ncm->enable) 566 return -EBUSY; 567 568 /* Update to multicast filter mode */ 569 ncm->enable = 0; 570 ncm->data[0] = 0; 571 572 return 0; 573 } 574 575 static int ncsi_rsp_handler_snfc(struct ncsi_request *nr) 576 { 577 struct ncsi_cmd_snfc_pkt *cmd; 578 struct ncsi_rsp_pkt *rsp; 579 struct ncsi_dev_priv *ndp = nr->ndp; 580 struct ncsi_channel *nc; 581 struct ncsi_channel_mode *ncm; 582 583 /* Find the channel */ 584 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 585 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 586 NULL, &nc); 587 if (!nc) 588 return -ENODEV; 589 590 /* Check if flow control has been enabled */ 591 ncm = &nc->modes[NCSI_MODE_FC]; 592 if (ncm->enable) 593 return -EBUSY; 594 595 /* Update to flow control mode */ 596 cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd); 597 ncm->enable = 1; 598 ncm->data[0] = cmd->mode; 599 600 return 0; 601 } 602 603 static int ncsi_rsp_handler_gvi(struct ncsi_request *nr) 604 { 605 struct ncsi_rsp_gvi_pkt *rsp; 606 struct ncsi_dev_priv *ndp = nr->ndp; 607 struct ncsi_channel *nc; 608 struct ncsi_channel_version *ncv; 609 int i; 610 611 /* Find the channel */ 612 rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp); 613 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 614 NULL, &nc); 615 if (!nc) 616 return -ENODEV; 617 618 /* Update to channel's version info */ 619 ncv = &nc->version; 620 ncv->version = ntohl(rsp->ncsi_version); 621 ncv->alpha2 = rsp->alpha2; 622 memcpy(ncv->fw_name, rsp->fw_name, 12); 623 ncv->fw_version = ntohl(rsp->fw_version); 624 for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++) 625 ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]); 626 ncv->mf_id = ntohl(rsp->mf_id); 627 628 return 0; 629 } 630 631 static int ncsi_rsp_handler_gc(struct ncsi_request *nr) 632 { 633 struct ncsi_rsp_gc_pkt *rsp; 634 struct ncsi_dev_priv *ndp = nr->ndp; 635 struct ncsi_channel *nc; 636 struct ncsi_channel_filter *ncf; 637 size_t size, entry_size; 638 int cnt, i; 639 640 /* Find the channel */ 641 rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp); 642 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 643 NULL, &nc); 644 if (!nc) 645 return -ENODEV; 646 647 /* Update channel's capabilities */ 648 nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) & 649 NCSI_CAP_GENERIC_MASK; 650 nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) & 651 NCSI_CAP_BC_MASK; 652 nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) & 653 NCSI_CAP_MC_MASK; 654 nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap); 655 nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) & 656 NCSI_CAP_AEN_MASK; 657 nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode & 658 NCSI_CAP_VLAN_MASK; 659 660 /* Build filters */ 661 for (i = 0; i < NCSI_FILTER_MAX; i++) { 662 switch (i) { 663 case NCSI_FILTER_VLAN: 664 cnt = rsp->vlan_cnt; 665 entry_size = 2; 666 break; 667 case NCSI_FILTER_MIXED: 668 cnt = rsp->mixed_cnt; 669 entry_size = 6; 670 break; 671 case NCSI_FILTER_MC: 672 cnt = rsp->mc_cnt; 673 entry_size = 6; 674 break; 675 case NCSI_FILTER_UC: 676 cnt = rsp->uc_cnt; 677 entry_size = 6; 678 break; 679 default: 680 continue; 681 } 682 683 if (!cnt || nc->filters[i]) 684 continue; 685 686 size = sizeof(*ncf) + cnt * entry_size; 687 ncf = kzalloc(size, GFP_ATOMIC); 688 if (!ncf) { 689 pr_warn("%s: Cannot alloc filter table (%d)\n", 690 __func__, i); 691 return -ENOMEM; 692 } 693 694 ncf->index = i; 695 ncf->total = cnt; 696 ncf->bitmap = 0x0ul; 697 nc->filters[i] = ncf; 698 } 699 700 return 0; 701 } 702 703 static int ncsi_rsp_handler_gp(struct ncsi_request *nr) 704 { 705 struct ncsi_rsp_gp_pkt *rsp; 706 struct ncsi_dev_priv *ndp = nr->ndp; 707 struct ncsi_channel *nc; 708 unsigned short enable, vlan; 709 unsigned char *pdata; 710 int table, i; 711 712 /* Find the channel */ 713 rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp); 714 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 715 NULL, &nc); 716 if (!nc) 717 return -ENODEV; 718 719 /* Modes with explicit enabled indications */ 720 if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */ 721 nc->modes[NCSI_MODE_BC].enable = 1; 722 nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode); 723 } 724 if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */ 725 nc->modes[NCSI_MODE_ENABLE].enable = 1; 726 if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */ 727 nc->modes[NCSI_MODE_TX_ENABLE].enable = 1; 728 if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */ 729 nc->modes[NCSI_MODE_MC].enable = 1; 730 731 /* Modes without explicit enabled indications */ 732 nc->modes[NCSI_MODE_LINK].enable = 1; 733 nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode); 734 nc->modes[NCSI_MODE_VLAN].enable = 1; 735 nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode; 736 nc->modes[NCSI_MODE_FC].enable = 1; 737 nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode; 738 nc->modes[NCSI_MODE_AEN].enable = 1; 739 nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode); 740 741 /* MAC addresses filter table */ 742 pdata = (unsigned char *)rsp + 48; 743 enable = rsp->mac_enable; 744 for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) { 745 if (i >= (nc->filters[NCSI_FILTER_UC]->total + 746 nc->filters[NCSI_FILTER_MC]->total)) 747 table = NCSI_FILTER_MIXED; 748 else if (i >= nc->filters[NCSI_FILTER_UC]->total) 749 table = NCSI_FILTER_MC; 750 else 751 table = NCSI_FILTER_UC; 752 753 if (!(enable & (0x1 << i))) 754 continue; 755 756 if (ncsi_find_filter(nc, table, pdata) >= 0) 757 continue; 758 759 ncsi_add_filter(nc, table, pdata); 760 } 761 762 /* VLAN filter table */ 763 enable = ntohs(rsp->vlan_enable); 764 for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) { 765 if (!(enable & (0x1 << i))) 766 continue; 767 768 vlan = ntohs(*(__be16 *)pdata); 769 if (ncsi_find_filter(nc, NCSI_FILTER_VLAN, &vlan) >= 0) 770 continue; 771 772 ncsi_add_filter(nc, NCSI_FILTER_VLAN, &vlan); 773 } 774 775 return 0; 776 } 777 778 static int ncsi_rsp_handler_gcps(struct ncsi_request *nr) 779 { 780 struct ncsi_rsp_gcps_pkt *rsp; 781 struct ncsi_dev_priv *ndp = nr->ndp; 782 struct ncsi_channel *nc; 783 struct ncsi_channel_stats *ncs; 784 785 /* Find the channel */ 786 rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp); 787 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 788 NULL, &nc); 789 if (!nc) 790 return -ENODEV; 791 792 /* Update HNC's statistics */ 793 ncs = &nc->stats; 794 ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi); 795 ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo); 796 ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes); 797 ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes); 798 ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts); 799 ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts); 800 ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts); 801 ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts); 802 ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts); 803 ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts); 804 ncs->hnc_fcs_err = ntohl(rsp->fcs_err); 805 ncs->hnc_align_err = ntohl(rsp->align_err); 806 ncs->hnc_false_carrier = ntohl(rsp->false_carrier); 807 ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts); 808 ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts); 809 ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon); 810 ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff); 811 ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon); 812 ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff); 813 ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision); 814 ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision); 815 ncs->hnc_l_collision = ntohl(rsp->l_collision); 816 ncs->hnc_e_collision = ntohl(rsp->e_collision); 817 ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames); 818 ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames); 819 ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames); 820 ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames); 821 ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames); 822 ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames); 823 ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames); 824 ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames); 825 ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames); 826 ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames); 827 ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames); 828 ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames); 829 ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames); 830 ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames); 831 ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames); 832 ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes); 833 ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts); 834 ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts); 835 836 return 0; 837 } 838 839 static int ncsi_rsp_handler_gns(struct ncsi_request *nr) 840 { 841 struct ncsi_rsp_gns_pkt *rsp; 842 struct ncsi_dev_priv *ndp = nr->ndp; 843 struct ncsi_channel *nc; 844 struct ncsi_channel_stats *ncs; 845 846 /* Find the channel */ 847 rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp); 848 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 849 NULL, &nc); 850 if (!nc) 851 return -ENODEV; 852 853 /* Update HNC's statistics */ 854 ncs = &nc->stats; 855 ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds); 856 ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds); 857 ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs); 858 ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs); 859 ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts); 860 ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts); 861 ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts); 862 863 return 0; 864 } 865 866 static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr) 867 { 868 struct ncsi_rsp_gnpts_pkt *rsp; 869 struct ncsi_dev_priv *ndp = nr->ndp; 870 struct ncsi_channel *nc; 871 struct ncsi_channel_stats *ncs; 872 873 /* Find the channel */ 874 rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp); 875 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 876 NULL, &nc); 877 if (!nc) 878 return -ENODEV; 879 880 /* Update HNC's statistics */ 881 ncs = &nc->stats; 882 ncs->pt_tx_pkts = ntohl(rsp->tx_pkts); 883 ncs->pt_tx_dropped = ntohl(rsp->tx_dropped); 884 ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err); 885 ncs->pt_tx_us_err = ntohl(rsp->tx_us_err); 886 ncs->pt_rx_pkts = ntohl(rsp->rx_pkts); 887 ncs->pt_rx_dropped = ntohl(rsp->rx_dropped); 888 ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err); 889 ncs->pt_rx_us_err = ntohl(rsp->rx_us_err); 890 ncs->pt_rx_os_err = ntohl(rsp->rx_os_err); 891 892 return 0; 893 } 894 895 static int ncsi_rsp_handler_gps(struct ncsi_request *nr) 896 { 897 struct ncsi_rsp_gps_pkt *rsp; 898 struct ncsi_dev_priv *ndp = nr->ndp; 899 struct ncsi_package *np; 900 901 /* Find the package */ 902 rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp); 903 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 904 &np, NULL); 905 if (!np) 906 return -ENODEV; 907 908 return 0; 909 } 910 911 static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr) 912 { 913 struct ncsi_rsp_gpuuid_pkt *rsp; 914 struct ncsi_dev_priv *ndp = nr->ndp; 915 struct ncsi_package *np; 916 917 /* Find the package */ 918 rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp); 919 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 920 &np, NULL); 921 if (!np) 922 return -ENODEV; 923 924 memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid)); 925 926 return 0; 927 } 928 929 static struct ncsi_rsp_handler { 930 unsigned char type; 931 int payload; 932 int (*handler)(struct ncsi_request *nr); 933 } ncsi_rsp_handlers[] = { 934 { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis }, 935 { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp }, 936 { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp }, 937 { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec }, 938 { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc }, 939 { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc }, 940 { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt }, 941 { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt }, 942 { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae }, 943 { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl }, 944 { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls }, 945 { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf }, 946 { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev }, 947 { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv }, 948 { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma }, 949 { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf }, 950 { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf }, 951 { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf }, 952 { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf }, 953 { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc }, 954 { NCSI_PKT_RSP_GVI, 36, ncsi_rsp_handler_gvi }, 955 { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc }, 956 { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp }, 957 { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps }, 958 { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns }, 959 { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts }, 960 { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps }, 961 { NCSI_PKT_RSP_OEM, 0, NULL }, 962 { NCSI_PKT_RSP_PLDM, 0, NULL }, 963 { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid } 964 }; 965 966 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev, 967 struct packet_type *pt, struct net_device *orig_dev) 968 { 969 struct ncsi_rsp_handler *nrh = NULL; 970 struct ncsi_dev *nd; 971 struct ncsi_dev_priv *ndp; 972 struct ncsi_request *nr; 973 struct ncsi_pkt_hdr *hdr; 974 unsigned long flags; 975 int payload, i, ret; 976 977 /* Find the NCSI device */ 978 nd = ncsi_find_dev(dev); 979 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL; 980 if (!ndp) 981 return -ENODEV; 982 983 /* Check if it is AEN packet */ 984 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb); 985 if (hdr->type == NCSI_PKT_AEN) 986 return ncsi_aen_handler(ndp, skb); 987 988 /* Find the handler */ 989 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) { 990 if (ncsi_rsp_handlers[i].type == hdr->type) { 991 if (ncsi_rsp_handlers[i].handler) 992 nrh = &ncsi_rsp_handlers[i]; 993 else 994 nrh = NULL; 995 996 break; 997 } 998 } 999 1000 if (!nrh) { 1001 netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n", 1002 hdr->type); 1003 return -ENOENT; 1004 } 1005 1006 /* Associate with the request */ 1007 spin_lock_irqsave(&ndp->lock, flags); 1008 nr = &ndp->requests[hdr->id]; 1009 if (!nr->used) { 1010 spin_unlock_irqrestore(&ndp->lock, flags); 1011 return -ENODEV; 1012 } 1013 1014 nr->rsp = skb; 1015 if (!nr->enabled) { 1016 spin_unlock_irqrestore(&ndp->lock, flags); 1017 ret = -ENOENT; 1018 goto out; 1019 } 1020 1021 /* Validate the packet */ 1022 spin_unlock_irqrestore(&ndp->lock, flags); 1023 payload = nrh->payload; 1024 if (payload < 0) 1025 payload = ntohs(hdr->length); 1026 ret = ncsi_validate_rsp_pkt(nr, payload); 1027 if (ret) 1028 goto out; 1029 1030 /* Process the packet */ 1031 ret = nrh->handler(nr); 1032 out: 1033 ncsi_free_request(nr); 1034 return ret; 1035 } 1036