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 #include <net/genetlink.h> 20 21 #include "internal.h" 22 #include "ncsi-pkt.h" 23 #include "ncsi-netlink.h" 24 25 static int ncsi_validate_rsp_pkt(struct ncsi_request *nr, 26 unsigned short payload) 27 { 28 struct ncsi_rsp_pkt_hdr *h; 29 u32 checksum; 30 __be32 *pchecksum; 31 32 /* Check NCSI packet header. We don't need validate 33 * the packet type, which should have been checked 34 * before calling this function. 35 */ 36 h = (struct ncsi_rsp_pkt_hdr *)skb_network_header(nr->rsp); 37 38 if (h->common.revision != NCSI_PKT_REVISION) { 39 netdev_dbg(nr->ndp->ndev.dev, 40 "NCSI: unsupported header revision\n"); 41 return -EINVAL; 42 } 43 if (ntohs(h->common.length) != payload) { 44 netdev_dbg(nr->ndp->ndev.dev, 45 "NCSI: payload length mismatched\n"); 46 return -EINVAL; 47 } 48 49 /* Check on code and reason */ 50 if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED || 51 ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR) { 52 netdev_dbg(nr->ndp->ndev.dev, 53 "NCSI: non zero response/reason code\n"); 54 return -EPERM; 55 } 56 57 /* Validate checksum, which might be zeroes if the 58 * sender doesn't support checksum according to NCSI 59 * specification. 60 */ 61 pchecksum = (__be32 *)((void *)(h + 1) + payload - 4); 62 if (ntohl(*pchecksum) == 0) 63 return 0; 64 65 checksum = ncsi_calculate_checksum((unsigned char *)h, 66 sizeof(*h) + payload - 4); 67 68 if (*pchecksum != htonl(checksum)) { 69 netdev_dbg(nr->ndp->ndev.dev, "NCSI: checksum mismatched\n"); 70 return -EINVAL; 71 } 72 73 return 0; 74 } 75 76 static int ncsi_rsp_handler_cis(struct ncsi_request *nr) 77 { 78 struct ncsi_rsp_pkt *rsp; 79 struct ncsi_dev_priv *ndp = nr->ndp; 80 struct ncsi_package *np; 81 struct ncsi_channel *nc; 82 unsigned char id; 83 84 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 85 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, &np, &nc); 86 if (!nc) { 87 if (ndp->flags & NCSI_DEV_PROBED) 88 return -ENXIO; 89 90 id = NCSI_CHANNEL_INDEX(rsp->rsp.common.channel); 91 nc = ncsi_add_channel(np, id); 92 } 93 94 return nc ? 0 : -ENODEV; 95 } 96 97 static int ncsi_rsp_handler_sp(struct ncsi_request *nr) 98 { 99 struct ncsi_rsp_pkt *rsp; 100 struct ncsi_dev_priv *ndp = nr->ndp; 101 struct ncsi_package *np; 102 unsigned char id; 103 104 /* Add the package if it's not existing. Otherwise, 105 * to change the state of its child channels. 106 */ 107 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 108 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 109 &np, NULL); 110 if (!np) { 111 if (ndp->flags & NCSI_DEV_PROBED) 112 return -ENXIO; 113 114 id = NCSI_PACKAGE_INDEX(rsp->rsp.common.channel); 115 np = ncsi_add_package(ndp, id); 116 if (!np) 117 return -ENODEV; 118 } 119 120 return 0; 121 } 122 123 static int ncsi_rsp_handler_dp(struct ncsi_request *nr) 124 { 125 struct ncsi_rsp_pkt *rsp; 126 struct ncsi_dev_priv *ndp = nr->ndp; 127 struct ncsi_package *np; 128 struct ncsi_channel *nc; 129 unsigned long flags; 130 131 /* Find the package */ 132 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 133 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 134 &np, NULL); 135 if (!np) 136 return -ENODEV; 137 138 /* Change state of all channels attached to the package */ 139 NCSI_FOR_EACH_CHANNEL(np, nc) { 140 spin_lock_irqsave(&nc->lock, flags); 141 nc->state = NCSI_CHANNEL_INACTIVE; 142 spin_unlock_irqrestore(&nc->lock, flags); 143 } 144 145 return 0; 146 } 147 148 static int ncsi_rsp_handler_ec(struct ncsi_request *nr) 149 { 150 struct ncsi_rsp_pkt *rsp; 151 struct ncsi_dev_priv *ndp = nr->ndp; 152 struct ncsi_channel *nc; 153 struct ncsi_channel_mode *ncm; 154 155 /* Find the package and channel */ 156 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 157 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 158 NULL, &nc); 159 if (!nc) 160 return -ENODEV; 161 162 ncm = &nc->modes[NCSI_MODE_ENABLE]; 163 if (ncm->enable) 164 return 0; 165 166 ncm->enable = 1; 167 return 0; 168 } 169 170 static int ncsi_rsp_handler_dc(struct ncsi_request *nr) 171 { 172 struct ncsi_rsp_pkt *rsp; 173 struct ncsi_dev_priv *ndp = nr->ndp; 174 struct ncsi_channel *nc; 175 struct ncsi_channel_mode *ncm; 176 int ret; 177 178 ret = ncsi_validate_rsp_pkt(nr, 4); 179 if (ret) 180 return ret; 181 182 /* Find the package and channel */ 183 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 184 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 185 NULL, &nc); 186 if (!nc) 187 return -ENODEV; 188 189 ncm = &nc->modes[NCSI_MODE_ENABLE]; 190 if (!ncm->enable) 191 return 0; 192 193 ncm->enable = 0; 194 return 0; 195 } 196 197 static int ncsi_rsp_handler_rc(struct ncsi_request *nr) 198 { 199 struct ncsi_rsp_pkt *rsp; 200 struct ncsi_dev_priv *ndp = nr->ndp; 201 struct ncsi_channel *nc; 202 unsigned long flags; 203 204 /* Find the package and channel */ 205 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 206 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 207 NULL, &nc); 208 if (!nc) 209 return -ENODEV; 210 211 /* Update state for the specified channel */ 212 spin_lock_irqsave(&nc->lock, flags); 213 nc->state = NCSI_CHANNEL_INACTIVE; 214 spin_unlock_irqrestore(&nc->lock, flags); 215 216 return 0; 217 } 218 219 static int ncsi_rsp_handler_ecnt(struct ncsi_request *nr) 220 { 221 struct ncsi_rsp_pkt *rsp; 222 struct ncsi_dev_priv *ndp = nr->ndp; 223 struct ncsi_channel *nc; 224 struct ncsi_channel_mode *ncm; 225 226 /* Find the package and channel */ 227 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 228 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 229 NULL, &nc); 230 if (!nc) 231 return -ENODEV; 232 233 ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; 234 if (ncm->enable) 235 return 0; 236 237 ncm->enable = 1; 238 return 0; 239 } 240 241 static int ncsi_rsp_handler_dcnt(struct ncsi_request *nr) 242 { 243 struct ncsi_rsp_pkt *rsp; 244 struct ncsi_dev_priv *ndp = nr->ndp; 245 struct ncsi_channel *nc; 246 struct ncsi_channel_mode *ncm; 247 248 /* Find the package and channel */ 249 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 250 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 251 NULL, &nc); 252 if (!nc) 253 return -ENODEV; 254 255 ncm = &nc->modes[NCSI_MODE_TX_ENABLE]; 256 if (!ncm->enable) 257 return 0; 258 259 ncm->enable = 0; 260 return 0; 261 } 262 263 static int ncsi_rsp_handler_ae(struct ncsi_request *nr) 264 { 265 struct ncsi_cmd_ae_pkt *cmd; 266 struct ncsi_rsp_pkt *rsp; 267 struct ncsi_dev_priv *ndp = nr->ndp; 268 struct ncsi_channel *nc; 269 struct ncsi_channel_mode *ncm; 270 271 /* Find the package and channel */ 272 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 273 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 274 NULL, &nc); 275 if (!nc) 276 return -ENODEV; 277 278 /* Check if the AEN has been enabled */ 279 ncm = &nc->modes[NCSI_MODE_AEN]; 280 if (ncm->enable) 281 return 0; 282 283 /* Update to AEN configuration */ 284 cmd = (struct ncsi_cmd_ae_pkt *)skb_network_header(nr->cmd); 285 ncm->enable = 1; 286 ncm->data[0] = cmd->mc_id; 287 ncm->data[1] = ntohl(cmd->mode); 288 289 return 0; 290 } 291 292 static int ncsi_rsp_handler_sl(struct ncsi_request *nr) 293 { 294 struct ncsi_cmd_sl_pkt *cmd; 295 struct ncsi_rsp_pkt *rsp; 296 struct ncsi_dev_priv *ndp = nr->ndp; 297 struct ncsi_channel *nc; 298 struct ncsi_channel_mode *ncm; 299 300 /* Find the package and channel */ 301 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 302 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 303 NULL, &nc); 304 if (!nc) 305 return -ENODEV; 306 307 cmd = (struct ncsi_cmd_sl_pkt *)skb_network_header(nr->cmd); 308 ncm = &nc->modes[NCSI_MODE_LINK]; 309 ncm->data[0] = ntohl(cmd->mode); 310 ncm->data[1] = ntohl(cmd->oem_mode); 311 312 return 0; 313 } 314 315 static int ncsi_rsp_handler_gls(struct ncsi_request *nr) 316 { 317 struct ncsi_rsp_gls_pkt *rsp; 318 struct ncsi_dev_priv *ndp = nr->ndp; 319 struct ncsi_channel *nc; 320 struct ncsi_channel_mode *ncm; 321 unsigned long flags; 322 323 /* Find the package and channel */ 324 rsp = (struct ncsi_rsp_gls_pkt *)skb_network_header(nr->rsp); 325 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 326 NULL, &nc); 327 if (!nc) 328 return -ENODEV; 329 330 ncm = &nc->modes[NCSI_MODE_LINK]; 331 ncm->data[2] = ntohl(rsp->status); 332 ncm->data[3] = ntohl(rsp->other); 333 ncm->data[4] = ntohl(rsp->oem_status); 334 335 if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN) 336 return 0; 337 338 /* Reset the channel monitor if it has been enabled */ 339 spin_lock_irqsave(&nc->lock, flags); 340 nc->monitor.state = NCSI_CHANNEL_MONITOR_START; 341 spin_unlock_irqrestore(&nc->lock, flags); 342 343 return 0; 344 } 345 346 static int ncsi_rsp_handler_svf(struct ncsi_request *nr) 347 { 348 struct ncsi_cmd_svf_pkt *cmd; 349 struct ncsi_rsp_pkt *rsp; 350 struct ncsi_dev_priv *ndp = nr->ndp; 351 struct ncsi_channel *nc; 352 struct ncsi_channel_vlan_filter *ncf; 353 unsigned long flags; 354 void *bitmap; 355 356 /* Find the package and channel */ 357 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 358 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 359 NULL, &nc); 360 if (!nc) 361 return -ENODEV; 362 363 cmd = (struct ncsi_cmd_svf_pkt *)skb_network_header(nr->cmd); 364 ncf = &nc->vlan_filter; 365 if (cmd->index == 0 || cmd->index > ncf->n_vids) 366 return -ERANGE; 367 368 /* Add or remove the VLAN filter. Remember HW indexes from 1 */ 369 spin_lock_irqsave(&nc->lock, flags); 370 bitmap = &ncf->bitmap; 371 if (!(cmd->enable & 0x1)) { 372 if (test_and_clear_bit(cmd->index - 1, bitmap)) 373 ncf->vids[cmd->index - 1] = 0; 374 } else { 375 set_bit(cmd->index - 1, bitmap); 376 ncf->vids[cmd->index - 1] = ntohs(cmd->vlan); 377 } 378 spin_unlock_irqrestore(&nc->lock, flags); 379 380 return 0; 381 } 382 383 static int ncsi_rsp_handler_ev(struct ncsi_request *nr) 384 { 385 struct ncsi_cmd_ev_pkt *cmd; 386 struct ncsi_rsp_pkt *rsp; 387 struct ncsi_dev_priv *ndp = nr->ndp; 388 struct ncsi_channel *nc; 389 struct ncsi_channel_mode *ncm; 390 391 /* Find the package and channel */ 392 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 393 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 394 NULL, &nc); 395 if (!nc) 396 return -ENODEV; 397 398 /* Check if VLAN mode has been enabled */ 399 ncm = &nc->modes[NCSI_MODE_VLAN]; 400 if (ncm->enable) 401 return 0; 402 403 /* Update to VLAN mode */ 404 cmd = (struct ncsi_cmd_ev_pkt *)skb_network_header(nr->cmd); 405 ncm->enable = 1; 406 ncm->data[0] = ntohl(cmd->mode); 407 408 return 0; 409 } 410 411 static int ncsi_rsp_handler_dv(struct ncsi_request *nr) 412 { 413 struct ncsi_rsp_pkt *rsp; 414 struct ncsi_dev_priv *ndp = nr->ndp; 415 struct ncsi_channel *nc; 416 struct ncsi_channel_mode *ncm; 417 418 /* Find the package and channel */ 419 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 420 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 421 NULL, &nc); 422 if (!nc) 423 return -ENODEV; 424 425 /* Check if VLAN mode has been enabled */ 426 ncm = &nc->modes[NCSI_MODE_VLAN]; 427 if (!ncm->enable) 428 return 0; 429 430 /* Update to VLAN mode */ 431 ncm->enable = 0; 432 return 0; 433 } 434 435 static int ncsi_rsp_handler_sma(struct ncsi_request *nr) 436 { 437 struct ncsi_cmd_sma_pkt *cmd; 438 struct ncsi_rsp_pkt *rsp; 439 struct ncsi_dev_priv *ndp = nr->ndp; 440 struct ncsi_channel *nc; 441 struct ncsi_channel_mac_filter *ncf; 442 unsigned long flags; 443 void *bitmap; 444 bool enabled; 445 int index; 446 447 448 /* Find the package and channel */ 449 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 450 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 451 NULL, &nc); 452 if (!nc) 453 return -ENODEV; 454 455 /* According to NCSI spec 1.01, the mixed filter table 456 * isn't supported yet. 457 */ 458 cmd = (struct ncsi_cmd_sma_pkt *)skb_network_header(nr->cmd); 459 enabled = cmd->at_e & 0x1; 460 ncf = &nc->mac_filter; 461 bitmap = &ncf->bitmap; 462 463 if (cmd->index == 0 || 464 cmd->index > ncf->n_uc + ncf->n_mc + ncf->n_mixed) 465 return -ERANGE; 466 467 index = (cmd->index - 1) * ETH_ALEN; 468 spin_lock_irqsave(&nc->lock, flags); 469 if (enabled) { 470 set_bit(cmd->index - 1, bitmap); 471 memcpy(&ncf->addrs[index], cmd->mac, ETH_ALEN); 472 } else { 473 clear_bit(cmd->index - 1, bitmap); 474 memset(&ncf->addrs[index], 0, ETH_ALEN); 475 } 476 spin_unlock_irqrestore(&nc->lock, flags); 477 478 return 0; 479 } 480 481 static int ncsi_rsp_handler_ebf(struct ncsi_request *nr) 482 { 483 struct ncsi_cmd_ebf_pkt *cmd; 484 struct ncsi_rsp_pkt *rsp; 485 struct ncsi_dev_priv *ndp = nr->ndp; 486 struct ncsi_channel *nc; 487 struct ncsi_channel_mode *ncm; 488 489 /* Find the package and channel */ 490 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 491 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, NULL, &nc); 492 if (!nc) 493 return -ENODEV; 494 495 /* Check if broadcast filter has been enabled */ 496 ncm = &nc->modes[NCSI_MODE_BC]; 497 if (ncm->enable) 498 return 0; 499 500 /* Update to broadcast filter mode */ 501 cmd = (struct ncsi_cmd_ebf_pkt *)skb_network_header(nr->cmd); 502 ncm->enable = 1; 503 ncm->data[0] = ntohl(cmd->mode); 504 505 return 0; 506 } 507 508 static int ncsi_rsp_handler_dbf(struct ncsi_request *nr) 509 { 510 struct ncsi_rsp_pkt *rsp; 511 struct ncsi_dev_priv *ndp = nr->ndp; 512 struct ncsi_channel *nc; 513 struct ncsi_channel_mode *ncm; 514 515 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 516 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 517 NULL, &nc); 518 if (!nc) 519 return -ENODEV; 520 521 /* Check if broadcast filter isn't enabled */ 522 ncm = &nc->modes[NCSI_MODE_BC]; 523 if (!ncm->enable) 524 return 0; 525 526 /* Update to broadcast filter mode */ 527 ncm->enable = 0; 528 ncm->data[0] = 0; 529 530 return 0; 531 } 532 533 static int ncsi_rsp_handler_egmf(struct ncsi_request *nr) 534 { 535 struct ncsi_cmd_egmf_pkt *cmd; 536 struct ncsi_rsp_pkt *rsp; 537 struct ncsi_dev_priv *ndp = nr->ndp; 538 struct ncsi_channel *nc; 539 struct ncsi_channel_mode *ncm; 540 541 /* Find the channel */ 542 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 543 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 544 NULL, &nc); 545 if (!nc) 546 return -ENODEV; 547 548 /* Check if multicast filter has been enabled */ 549 ncm = &nc->modes[NCSI_MODE_MC]; 550 if (ncm->enable) 551 return 0; 552 553 /* Update to multicast filter mode */ 554 cmd = (struct ncsi_cmd_egmf_pkt *)skb_network_header(nr->cmd); 555 ncm->enable = 1; 556 ncm->data[0] = ntohl(cmd->mode); 557 558 return 0; 559 } 560 561 static int ncsi_rsp_handler_dgmf(struct ncsi_request *nr) 562 { 563 struct ncsi_rsp_pkt *rsp; 564 struct ncsi_dev_priv *ndp = nr->ndp; 565 struct ncsi_channel *nc; 566 struct ncsi_channel_mode *ncm; 567 568 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 569 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 570 NULL, &nc); 571 if (!nc) 572 return -ENODEV; 573 574 /* Check if multicast filter has been enabled */ 575 ncm = &nc->modes[NCSI_MODE_MC]; 576 if (!ncm->enable) 577 return 0; 578 579 /* Update to multicast filter mode */ 580 ncm->enable = 0; 581 ncm->data[0] = 0; 582 583 return 0; 584 } 585 586 static int ncsi_rsp_handler_snfc(struct ncsi_request *nr) 587 { 588 struct ncsi_cmd_snfc_pkt *cmd; 589 struct ncsi_rsp_pkt *rsp; 590 struct ncsi_dev_priv *ndp = nr->ndp; 591 struct ncsi_channel *nc; 592 struct ncsi_channel_mode *ncm; 593 594 /* Find the channel */ 595 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 596 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 597 NULL, &nc); 598 if (!nc) 599 return -ENODEV; 600 601 /* Check if flow control has been enabled */ 602 ncm = &nc->modes[NCSI_MODE_FC]; 603 if (ncm->enable) 604 return 0; 605 606 /* Update to flow control mode */ 607 cmd = (struct ncsi_cmd_snfc_pkt *)skb_network_header(nr->cmd); 608 ncm->enable = 1; 609 ncm->data[0] = cmd->mode; 610 611 return 0; 612 } 613 614 /* Response handler for Mellanox command Get Mac Address */ 615 static int ncsi_rsp_handler_oem_mlx_gma(struct ncsi_request *nr) 616 { 617 struct ncsi_dev_priv *ndp = nr->ndp; 618 struct net_device *ndev = ndp->ndev.dev; 619 const struct net_device_ops *ops = ndev->netdev_ops; 620 struct ncsi_rsp_oem_pkt *rsp; 621 struct sockaddr saddr; 622 int ret = 0; 623 624 /* Get the response header */ 625 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp); 626 627 saddr.sa_family = ndev->type; 628 ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; 629 memcpy(saddr.sa_data, &rsp->data[MLX_MAC_ADDR_OFFSET], ETH_ALEN); 630 ret = ops->ndo_set_mac_address(ndev, &saddr); 631 if (ret < 0) 632 netdev_warn(ndev, "NCSI: 'Writing mac address to device failed\n"); 633 634 return ret; 635 } 636 637 /* Response handler for Mellanox card */ 638 static int ncsi_rsp_handler_oem_mlx(struct ncsi_request *nr) 639 { 640 struct ncsi_rsp_oem_mlx_pkt *mlx; 641 struct ncsi_rsp_oem_pkt *rsp; 642 643 /* Get the response header */ 644 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp); 645 mlx = (struct ncsi_rsp_oem_mlx_pkt *)(rsp->data); 646 647 if (mlx->cmd == NCSI_OEM_MLX_CMD_GMA && 648 mlx->param == NCSI_OEM_MLX_CMD_GMA_PARAM) 649 return ncsi_rsp_handler_oem_mlx_gma(nr); 650 return 0; 651 } 652 653 /* Response handler for Broadcom command Get Mac Address */ 654 static int ncsi_rsp_handler_oem_bcm_gma(struct ncsi_request *nr) 655 { 656 struct ncsi_dev_priv *ndp = nr->ndp; 657 struct net_device *ndev = ndp->ndev.dev; 658 const struct net_device_ops *ops = ndev->netdev_ops; 659 struct ncsi_rsp_oem_pkt *rsp; 660 struct sockaddr saddr; 661 int ret = 0; 662 663 /* Get the response header */ 664 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp); 665 666 saddr.sa_family = ndev->type; 667 ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; 668 memcpy(saddr.sa_data, &rsp->data[BCM_MAC_ADDR_OFFSET], ETH_ALEN); 669 /* Increase mac address by 1 for BMC's address */ 670 saddr.sa_data[ETH_ALEN - 1]++; 671 ret = ops->ndo_set_mac_address(ndev, &saddr); 672 if (ret < 0) 673 netdev_warn(ndev, "NCSI: 'Writing mac address to device failed\n"); 674 675 return ret; 676 } 677 678 /* Response handler for Broadcom card */ 679 static int ncsi_rsp_handler_oem_bcm(struct ncsi_request *nr) 680 { 681 struct ncsi_rsp_oem_bcm_pkt *bcm; 682 struct ncsi_rsp_oem_pkt *rsp; 683 684 /* Get the response header */ 685 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp); 686 bcm = (struct ncsi_rsp_oem_bcm_pkt *)(rsp->data); 687 688 if (bcm->type == NCSI_OEM_BCM_CMD_GMA) 689 return ncsi_rsp_handler_oem_bcm_gma(nr); 690 return 0; 691 } 692 693 static struct ncsi_rsp_oem_handler { 694 unsigned int mfr_id; 695 int (*handler)(struct ncsi_request *nr); 696 } ncsi_rsp_oem_handlers[] = { 697 { NCSI_OEM_MFR_MLX_ID, ncsi_rsp_handler_oem_mlx }, 698 { NCSI_OEM_MFR_BCM_ID, ncsi_rsp_handler_oem_bcm } 699 }; 700 701 /* Response handler for OEM command */ 702 static int ncsi_rsp_handler_oem(struct ncsi_request *nr) 703 { 704 struct ncsi_rsp_oem_handler *nrh = NULL; 705 struct ncsi_rsp_oem_pkt *rsp; 706 unsigned int mfr_id, i; 707 708 /* Get the response header */ 709 rsp = (struct ncsi_rsp_oem_pkt *)skb_network_header(nr->rsp); 710 mfr_id = ntohl(rsp->mfr_id); 711 712 /* Check for manufacturer id and Find the handler */ 713 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_oem_handlers); i++) { 714 if (ncsi_rsp_oem_handlers[i].mfr_id == mfr_id) { 715 if (ncsi_rsp_oem_handlers[i].handler) 716 nrh = &ncsi_rsp_oem_handlers[i]; 717 else 718 nrh = NULL; 719 720 break; 721 } 722 } 723 724 if (!nrh) { 725 netdev_err(nr->ndp->ndev.dev, "Received unrecognized OEM packet with MFR-ID (0x%x)\n", 726 mfr_id); 727 return -ENOENT; 728 } 729 730 /* Process the packet */ 731 return nrh->handler(nr); 732 } 733 734 static int ncsi_rsp_handler_gvi(struct ncsi_request *nr) 735 { 736 struct ncsi_rsp_gvi_pkt *rsp; 737 struct ncsi_dev_priv *ndp = nr->ndp; 738 struct ncsi_channel *nc; 739 struct ncsi_channel_version *ncv; 740 int i; 741 742 /* Find the channel */ 743 rsp = (struct ncsi_rsp_gvi_pkt *)skb_network_header(nr->rsp); 744 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 745 NULL, &nc); 746 if (!nc) 747 return -ENODEV; 748 749 /* Update to channel's version info */ 750 ncv = &nc->version; 751 ncv->version = ntohl(rsp->ncsi_version); 752 ncv->alpha2 = rsp->alpha2; 753 memcpy(ncv->fw_name, rsp->fw_name, 12); 754 ncv->fw_version = ntohl(rsp->fw_version); 755 for (i = 0; i < ARRAY_SIZE(ncv->pci_ids); i++) 756 ncv->pci_ids[i] = ntohs(rsp->pci_ids[i]); 757 ncv->mf_id = ntohl(rsp->mf_id); 758 759 return 0; 760 } 761 762 static int ncsi_rsp_handler_gc(struct ncsi_request *nr) 763 { 764 struct ncsi_rsp_gc_pkt *rsp; 765 struct ncsi_dev_priv *ndp = nr->ndp; 766 struct ncsi_channel *nc; 767 size_t size; 768 769 /* Find the channel */ 770 rsp = (struct ncsi_rsp_gc_pkt *)skb_network_header(nr->rsp); 771 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 772 NULL, &nc); 773 if (!nc) 774 return -ENODEV; 775 776 /* Update channel's capabilities */ 777 nc->caps[NCSI_CAP_GENERIC].cap = ntohl(rsp->cap) & 778 NCSI_CAP_GENERIC_MASK; 779 nc->caps[NCSI_CAP_BC].cap = ntohl(rsp->bc_cap) & 780 NCSI_CAP_BC_MASK; 781 nc->caps[NCSI_CAP_MC].cap = ntohl(rsp->mc_cap) & 782 NCSI_CAP_MC_MASK; 783 nc->caps[NCSI_CAP_BUFFER].cap = ntohl(rsp->buf_cap); 784 nc->caps[NCSI_CAP_AEN].cap = ntohl(rsp->aen_cap) & 785 NCSI_CAP_AEN_MASK; 786 nc->caps[NCSI_CAP_VLAN].cap = rsp->vlan_mode & 787 NCSI_CAP_VLAN_MASK; 788 789 size = (rsp->uc_cnt + rsp->mc_cnt + rsp->mixed_cnt) * ETH_ALEN; 790 nc->mac_filter.addrs = kzalloc(size, GFP_ATOMIC); 791 if (!nc->mac_filter.addrs) 792 return -ENOMEM; 793 nc->mac_filter.n_uc = rsp->uc_cnt; 794 nc->mac_filter.n_mc = rsp->mc_cnt; 795 nc->mac_filter.n_mixed = rsp->mixed_cnt; 796 797 nc->vlan_filter.vids = kcalloc(rsp->vlan_cnt, 798 sizeof(*nc->vlan_filter.vids), 799 GFP_ATOMIC); 800 if (!nc->vlan_filter.vids) 801 return -ENOMEM; 802 /* Set VLAN filters active so they are cleared in the first 803 * configuration state 804 */ 805 nc->vlan_filter.bitmap = U64_MAX; 806 nc->vlan_filter.n_vids = rsp->vlan_cnt; 807 808 return 0; 809 } 810 811 static int ncsi_rsp_handler_gp(struct ncsi_request *nr) 812 { 813 struct ncsi_channel_vlan_filter *ncvf; 814 struct ncsi_channel_mac_filter *ncmf; 815 struct ncsi_dev_priv *ndp = nr->ndp; 816 struct ncsi_rsp_gp_pkt *rsp; 817 struct ncsi_channel *nc; 818 unsigned short enable; 819 unsigned char *pdata; 820 unsigned long flags; 821 void *bitmap; 822 int i; 823 824 /* Find the channel */ 825 rsp = (struct ncsi_rsp_gp_pkt *)skb_network_header(nr->rsp); 826 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 827 NULL, &nc); 828 if (!nc) 829 return -ENODEV; 830 831 /* Modes with explicit enabled indications */ 832 if (ntohl(rsp->valid_modes) & 0x1) { /* BC filter mode */ 833 nc->modes[NCSI_MODE_BC].enable = 1; 834 nc->modes[NCSI_MODE_BC].data[0] = ntohl(rsp->bc_mode); 835 } 836 if (ntohl(rsp->valid_modes) & 0x2) /* Channel enabled */ 837 nc->modes[NCSI_MODE_ENABLE].enable = 1; 838 if (ntohl(rsp->valid_modes) & 0x4) /* Channel Tx enabled */ 839 nc->modes[NCSI_MODE_TX_ENABLE].enable = 1; 840 if (ntohl(rsp->valid_modes) & 0x8) /* MC filter mode */ 841 nc->modes[NCSI_MODE_MC].enable = 1; 842 843 /* Modes without explicit enabled indications */ 844 nc->modes[NCSI_MODE_LINK].enable = 1; 845 nc->modes[NCSI_MODE_LINK].data[0] = ntohl(rsp->link_mode); 846 nc->modes[NCSI_MODE_VLAN].enable = 1; 847 nc->modes[NCSI_MODE_VLAN].data[0] = rsp->vlan_mode; 848 nc->modes[NCSI_MODE_FC].enable = 1; 849 nc->modes[NCSI_MODE_FC].data[0] = rsp->fc_mode; 850 nc->modes[NCSI_MODE_AEN].enable = 1; 851 nc->modes[NCSI_MODE_AEN].data[0] = ntohl(rsp->aen_mode); 852 853 /* MAC addresses filter table */ 854 pdata = (unsigned char *)rsp + 48; 855 enable = rsp->mac_enable; 856 ncmf = &nc->mac_filter; 857 spin_lock_irqsave(&nc->lock, flags); 858 bitmap = &ncmf->bitmap; 859 for (i = 0; i < rsp->mac_cnt; i++, pdata += 6) { 860 if (!(enable & (0x1 << i))) 861 clear_bit(i, bitmap); 862 else 863 set_bit(i, bitmap); 864 865 memcpy(&ncmf->addrs[i * ETH_ALEN], pdata, ETH_ALEN); 866 } 867 spin_unlock_irqrestore(&nc->lock, flags); 868 869 /* VLAN filter table */ 870 enable = ntohs(rsp->vlan_enable); 871 ncvf = &nc->vlan_filter; 872 bitmap = &ncvf->bitmap; 873 spin_lock_irqsave(&nc->lock, flags); 874 for (i = 0; i < rsp->vlan_cnt; i++, pdata += 2) { 875 if (!(enable & (0x1 << i))) 876 clear_bit(i, bitmap); 877 else 878 set_bit(i, bitmap); 879 880 ncvf->vids[i] = ntohs(*(__be16 *)pdata); 881 } 882 spin_unlock_irqrestore(&nc->lock, flags); 883 884 return 0; 885 } 886 887 static int ncsi_rsp_handler_gcps(struct ncsi_request *nr) 888 { 889 struct ncsi_rsp_gcps_pkt *rsp; 890 struct ncsi_dev_priv *ndp = nr->ndp; 891 struct ncsi_channel *nc; 892 struct ncsi_channel_stats *ncs; 893 894 /* Find the channel */ 895 rsp = (struct ncsi_rsp_gcps_pkt *)skb_network_header(nr->rsp); 896 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 897 NULL, &nc); 898 if (!nc) 899 return -ENODEV; 900 901 /* Update HNC's statistics */ 902 ncs = &nc->stats; 903 ncs->hnc_cnt_hi = ntohl(rsp->cnt_hi); 904 ncs->hnc_cnt_lo = ntohl(rsp->cnt_lo); 905 ncs->hnc_rx_bytes = ntohl(rsp->rx_bytes); 906 ncs->hnc_tx_bytes = ntohl(rsp->tx_bytes); 907 ncs->hnc_rx_uc_pkts = ntohl(rsp->rx_uc_pkts); 908 ncs->hnc_rx_mc_pkts = ntohl(rsp->rx_mc_pkts); 909 ncs->hnc_rx_bc_pkts = ntohl(rsp->rx_bc_pkts); 910 ncs->hnc_tx_uc_pkts = ntohl(rsp->tx_uc_pkts); 911 ncs->hnc_tx_mc_pkts = ntohl(rsp->tx_mc_pkts); 912 ncs->hnc_tx_bc_pkts = ntohl(rsp->tx_bc_pkts); 913 ncs->hnc_fcs_err = ntohl(rsp->fcs_err); 914 ncs->hnc_align_err = ntohl(rsp->align_err); 915 ncs->hnc_false_carrier = ntohl(rsp->false_carrier); 916 ncs->hnc_runt_pkts = ntohl(rsp->runt_pkts); 917 ncs->hnc_jabber_pkts = ntohl(rsp->jabber_pkts); 918 ncs->hnc_rx_pause_xon = ntohl(rsp->rx_pause_xon); 919 ncs->hnc_rx_pause_xoff = ntohl(rsp->rx_pause_xoff); 920 ncs->hnc_tx_pause_xon = ntohl(rsp->tx_pause_xon); 921 ncs->hnc_tx_pause_xoff = ntohl(rsp->tx_pause_xoff); 922 ncs->hnc_tx_s_collision = ntohl(rsp->tx_s_collision); 923 ncs->hnc_tx_m_collision = ntohl(rsp->tx_m_collision); 924 ncs->hnc_l_collision = ntohl(rsp->l_collision); 925 ncs->hnc_e_collision = ntohl(rsp->e_collision); 926 ncs->hnc_rx_ctl_frames = ntohl(rsp->rx_ctl_frames); 927 ncs->hnc_rx_64_frames = ntohl(rsp->rx_64_frames); 928 ncs->hnc_rx_127_frames = ntohl(rsp->rx_127_frames); 929 ncs->hnc_rx_255_frames = ntohl(rsp->rx_255_frames); 930 ncs->hnc_rx_511_frames = ntohl(rsp->rx_511_frames); 931 ncs->hnc_rx_1023_frames = ntohl(rsp->rx_1023_frames); 932 ncs->hnc_rx_1522_frames = ntohl(rsp->rx_1522_frames); 933 ncs->hnc_rx_9022_frames = ntohl(rsp->rx_9022_frames); 934 ncs->hnc_tx_64_frames = ntohl(rsp->tx_64_frames); 935 ncs->hnc_tx_127_frames = ntohl(rsp->tx_127_frames); 936 ncs->hnc_tx_255_frames = ntohl(rsp->tx_255_frames); 937 ncs->hnc_tx_511_frames = ntohl(rsp->tx_511_frames); 938 ncs->hnc_tx_1023_frames = ntohl(rsp->tx_1023_frames); 939 ncs->hnc_tx_1522_frames = ntohl(rsp->tx_1522_frames); 940 ncs->hnc_tx_9022_frames = ntohl(rsp->tx_9022_frames); 941 ncs->hnc_rx_valid_bytes = ntohl(rsp->rx_valid_bytes); 942 ncs->hnc_rx_runt_pkts = ntohl(rsp->rx_runt_pkts); 943 ncs->hnc_rx_jabber_pkts = ntohl(rsp->rx_jabber_pkts); 944 945 return 0; 946 } 947 948 static int ncsi_rsp_handler_gns(struct ncsi_request *nr) 949 { 950 struct ncsi_rsp_gns_pkt *rsp; 951 struct ncsi_dev_priv *ndp = nr->ndp; 952 struct ncsi_channel *nc; 953 struct ncsi_channel_stats *ncs; 954 955 /* Find the channel */ 956 rsp = (struct ncsi_rsp_gns_pkt *)skb_network_header(nr->rsp); 957 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 958 NULL, &nc); 959 if (!nc) 960 return -ENODEV; 961 962 /* Update HNC's statistics */ 963 ncs = &nc->stats; 964 ncs->ncsi_rx_cmds = ntohl(rsp->rx_cmds); 965 ncs->ncsi_dropped_cmds = ntohl(rsp->dropped_cmds); 966 ncs->ncsi_cmd_type_errs = ntohl(rsp->cmd_type_errs); 967 ncs->ncsi_cmd_csum_errs = ntohl(rsp->cmd_csum_errs); 968 ncs->ncsi_rx_pkts = ntohl(rsp->rx_pkts); 969 ncs->ncsi_tx_pkts = ntohl(rsp->tx_pkts); 970 ncs->ncsi_tx_aen_pkts = ntohl(rsp->tx_aen_pkts); 971 972 return 0; 973 } 974 975 static int ncsi_rsp_handler_gnpts(struct ncsi_request *nr) 976 { 977 struct ncsi_rsp_gnpts_pkt *rsp; 978 struct ncsi_dev_priv *ndp = nr->ndp; 979 struct ncsi_channel *nc; 980 struct ncsi_channel_stats *ncs; 981 982 /* Find the channel */ 983 rsp = (struct ncsi_rsp_gnpts_pkt *)skb_network_header(nr->rsp); 984 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 985 NULL, &nc); 986 if (!nc) 987 return -ENODEV; 988 989 /* Update HNC's statistics */ 990 ncs = &nc->stats; 991 ncs->pt_tx_pkts = ntohl(rsp->tx_pkts); 992 ncs->pt_tx_dropped = ntohl(rsp->tx_dropped); 993 ncs->pt_tx_channel_err = ntohl(rsp->tx_channel_err); 994 ncs->pt_tx_us_err = ntohl(rsp->tx_us_err); 995 ncs->pt_rx_pkts = ntohl(rsp->rx_pkts); 996 ncs->pt_rx_dropped = ntohl(rsp->rx_dropped); 997 ncs->pt_rx_channel_err = ntohl(rsp->rx_channel_err); 998 ncs->pt_rx_us_err = ntohl(rsp->rx_us_err); 999 ncs->pt_rx_os_err = ntohl(rsp->rx_os_err); 1000 1001 return 0; 1002 } 1003 1004 static int ncsi_rsp_handler_gps(struct ncsi_request *nr) 1005 { 1006 struct ncsi_rsp_gps_pkt *rsp; 1007 struct ncsi_dev_priv *ndp = nr->ndp; 1008 struct ncsi_package *np; 1009 1010 /* Find the package */ 1011 rsp = (struct ncsi_rsp_gps_pkt *)skb_network_header(nr->rsp); 1012 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 1013 &np, NULL); 1014 if (!np) 1015 return -ENODEV; 1016 1017 return 0; 1018 } 1019 1020 static int ncsi_rsp_handler_gpuuid(struct ncsi_request *nr) 1021 { 1022 struct ncsi_rsp_gpuuid_pkt *rsp; 1023 struct ncsi_dev_priv *ndp = nr->ndp; 1024 struct ncsi_package *np; 1025 1026 /* Find the package */ 1027 rsp = (struct ncsi_rsp_gpuuid_pkt *)skb_network_header(nr->rsp); 1028 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 1029 &np, NULL); 1030 if (!np) 1031 return -ENODEV; 1032 1033 memcpy(np->uuid, rsp->uuid, sizeof(rsp->uuid)); 1034 1035 return 0; 1036 } 1037 1038 static int ncsi_rsp_handler_netlink(struct ncsi_request *nr) 1039 { 1040 struct ncsi_dev_priv *ndp = nr->ndp; 1041 struct ncsi_rsp_pkt *rsp; 1042 struct ncsi_package *np; 1043 struct ncsi_channel *nc; 1044 int ret; 1045 1046 /* Find the package */ 1047 rsp = (struct ncsi_rsp_pkt *)skb_network_header(nr->rsp); 1048 ncsi_find_package_and_channel(ndp, rsp->rsp.common.channel, 1049 &np, &nc); 1050 if (!np) 1051 return -ENODEV; 1052 1053 ret = ncsi_send_netlink_rsp(nr, np, nc); 1054 1055 return ret; 1056 } 1057 1058 static struct ncsi_rsp_handler { 1059 unsigned char type; 1060 int payload; 1061 int (*handler)(struct ncsi_request *nr); 1062 } ncsi_rsp_handlers[] = { 1063 { NCSI_PKT_RSP_CIS, 4, ncsi_rsp_handler_cis }, 1064 { NCSI_PKT_RSP_SP, 4, ncsi_rsp_handler_sp }, 1065 { NCSI_PKT_RSP_DP, 4, ncsi_rsp_handler_dp }, 1066 { NCSI_PKT_RSP_EC, 4, ncsi_rsp_handler_ec }, 1067 { NCSI_PKT_RSP_DC, 4, ncsi_rsp_handler_dc }, 1068 { NCSI_PKT_RSP_RC, 4, ncsi_rsp_handler_rc }, 1069 { NCSI_PKT_RSP_ECNT, 4, ncsi_rsp_handler_ecnt }, 1070 { NCSI_PKT_RSP_DCNT, 4, ncsi_rsp_handler_dcnt }, 1071 { NCSI_PKT_RSP_AE, 4, ncsi_rsp_handler_ae }, 1072 { NCSI_PKT_RSP_SL, 4, ncsi_rsp_handler_sl }, 1073 { NCSI_PKT_RSP_GLS, 16, ncsi_rsp_handler_gls }, 1074 { NCSI_PKT_RSP_SVF, 4, ncsi_rsp_handler_svf }, 1075 { NCSI_PKT_RSP_EV, 4, ncsi_rsp_handler_ev }, 1076 { NCSI_PKT_RSP_DV, 4, ncsi_rsp_handler_dv }, 1077 { NCSI_PKT_RSP_SMA, 4, ncsi_rsp_handler_sma }, 1078 { NCSI_PKT_RSP_EBF, 4, ncsi_rsp_handler_ebf }, 1079 { NCSI_PKT_RSP_DBF, 4, ncsi_rsp_handler_dbf }, 1080 { NCSI_PKT_RSP_EGMF, 4, ncsi_rsp_handler_egmf }, 1081 { NCSI_PKT_RSP_DGMF, 4, ncsi_rsp_handler_dgmf }, 1082 { NCSI_PKT_RSP_SNFC, 4, ncsi_rsp_handler_snfc }, 1083 { NCSI_PKT_RSP_GVI, 40, ncsi_rsp_handler_gvi }, 1084 { NCSI_PKT_RSP_GC, 32, ncsi_rsp_handler_gc }, 1085 { NCSI_PKT_RSP_GP, -1, ncsi_rsp_handler_gp }, 1086 { NCSI_PKT_RSP_GCPS, 172, ncsi_rsp_handler_gcps }, 1087 { NCSI_PKT_RSP_GNS, 172, ncsi_rsp_handler_gns }, 1088 { NCSI_PKT_RSP_GNPTS, 172, ncsi_rsp_handler_gnpts }, 1089 { NCSI_PKT_RSP_GPS, 8, ncsi_rsp_handler_gps }, 1090 { NCSI_PKT_RSP_OEM, -1, ncsi_rsp_handler_oem }, 1091 { NCSI_PKT_RSP_PLDM, 0, NULL }, 1092 { NCSI_PKT_RSP_GPUUID, 20, ncsi_rsp_handler_gpuuid } 1093 }; 1094 1095 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev, 1096 struct packet_type *pt, struct net_device *orig_dev) 1097 { 1098 struct ncsi_rsp_handler *nrh = NULL; 1099 struct ncsi_dev *nd; 1100 struct ncsi_dev_priv *ndp; 1101 struct ncsi_request *nr; 1102 struct ncsi_pkt_hdr *hdr; 1103 unsigned long flags; 1104 int payload, i, ret; 1105 1106 /* Find the NCSI device */ 1107 nd = ncsi_find_dev(dev); 1108 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL; 1109 if (!ndp) 1110 return -ENODEV; 1111 1112 /* Check if it is AEN packet */ 1113 hdr = (struct ncsi_pkt_hdr *)skb_network_header(skb); 1114 if (hdr->type == NCSI_PKT_AEN) 1115 return ncsi_aen_handler(ndp, skb); 1116 1117 /* Find the handler */ 1118 for (i = 0; i < ARRAY_SIZE(ncsi_rsp_handlers); i++) { 1119 if (ncsi_rsp_handlers[i].type == hdr->type) { 1120 if (ncsi_rsp_handlers[i].handler) 1121 nrh = &ncsi_rsp_handlers[i]; 1122 else 1123 nrh = NULL; 1124 1125 break; 1126 } 1127 } 1128 1129 if (!nrh) { 1130 netdev_err(nd->dev, "Received unrecognized packet (0x%x)\n", 1131 hdr->type); 1132 return -ENOENT; 1133 } 1134 1135 /* Associate with the request */ 1136 spin_lock_irqsave(&ndp->lock, flags); 1137 nr = &ndp->requests[hdr->id]; 1138 if (!nr->used) { 1139 spin_unlock_irqrestore(&ndp->lock, flags); 1140 return -ENODEV; 1141 } 1142 1143 nr->rsp = skb; 1144 if (!nr->enabled) { 1145 spin_unlock_irqrestore(&ndp->lock, flags); 1146 ret = -ENOENT; 1147 goto out; 1148 } 1149 1150 /* Validate the packet */ 1151 spin_unlock_irqrestore(&ndp->lock, flags); 1152 payload = nrh->payload; 1153 if (payload < 0) 1154 payload = ntohs(hdr->length); 1155 ret = ncsi_validate_rsp_pkt(nr, payload); 1156 if (ret) { 1157 netdev_warn(ndp->ndev.dev, 1158 "NCSI: 'bad' packet ignored for type 0x%x\n", 1159 hdr->type); 1160 1161 if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) { 1162 if (ret == -EPERM) 1163 goto out_netlink; 1164 else 1165 ncsi_send_netlink_err(ndp->ndev.dev, 1166 nr->snd_seq, 1167 nr->snd_portid, 1168 &nr->nlhdr, 1169 ret); 1170 } 1171 goto out; 1172 } 1173 1174 /* Process the packet */ 1175 ret = nrh->handler(nr); 1176 if (ret) 1177 netdev_err(ndp->ndev.dev, 1178 "NCSI: Handler for packet type 0x%x returned %d\n", 1179 hdr->type, ret); 1180 1181 out_netlink: 1182 if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) { 1183 ret = ncsi_rsp_handler_netlink(nr); 1184 if (ret) { 1185 netdev_err(ndp->ndev.dev, 1186 "NCSI: Netlink handler for packet type 0x%x returned %d\n", 1187 hdr->type, ret); 1188 } 1189 } 1190 1191 out: 1192 ncsi_free_request(nr); 1193 return ret; 1194 } 1195