1 /* 2 * Copyright Samuel Mendoza-Jonas, IBM Corporation 2018. 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/if_arp.h> 13 #include <linux/rtnetlink.h> 14 #include <linux/etherdevice.h> 15 #include <net/genetlink.h> 16 #include <net/ncsi.h> 17 #include <linux/skbuff.h> 18 #include <net/sock.h> 19 #include <uapi/linux/ncsi.h> 20 21 #include "internal.h" 22 #include "ncsi-pkt.h" 23 #include "ncsi-netlink.h" 24 25 static struct genl_family ncsi_genl_family; 26 27 static const struct nla_policy ncsi_genl_policy[NCSI_ATTR_MAX + 1] = { 28 [NCSI_ATTR_IFINDEX] = { .type = NLA_U32 }, 29 [NCSI_ATTR_PACKAGE_LIST] = { .type = NLA_NESTED }, 30 [NCSI_ATTR_PACKAGE_ID] = { .type = NLA_U32 }, 31 [NCSI_ATTR_CHANNEL_ID] = { .type = NLA_U32 }, 32 [NCSI_ATTR_DATA] = { .type = NLA_BINARY, .len = 2048 }, 33 [NCSI_ATTR_MULTI_FLAG] = { .type = NLA_FLAG }, 34 [NCSI_ATTR_PACKAGE_MASK] = { .type = NLA_U32 }, 35 [NCSI_ATTR_CHANNEL_MASK] = { .type = NLA_U32 }, 36 }; 37 38 static struct ncsi_dev_priv *ndp_from_ifindex(struct net *net, u32 ifindex) 39 { 40 struct ncsi_dev_priv *ndp; 41 struct net_device *dev; 42 struct ncsi_dev *nd; 43 struct ncsi_dev; 44 45 if (!net) 46 return NULL; 47 48 dev = dev_get_by_index(net, ifindex); 49 if (!dev) { 50 pr_err("NCSI netlink: No device for ifindex %u\n", ifindex); 51 return NULL; 52 } 53 54 nd = ncsi_find_dev(dev); 55 ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL; 56 57 dev_put(dev); 58 return ndp; 59 } 60 61 static int ncsi_write_channel_info(struct sk_buff *skb, 62 struct ncsi_dev_priv *ndp, 63 struct ncsi_channel *nc) 64 { 65 struct ncsi_channel_vlan_filter *ncf; 66 struct ncsi_channel_mode *m; 67 struct nlattr *vid_nest; 68 int i; 69 70 nla_put_u32(skb, NCSI_CHANNEL_ATTR_ID, nc->id); 71 m = &nc->modes[NCSI_MODE_LINK]; 72 nla_put_u32(skb, NCSI_CHANNEL_ATTR_LINK_STATE, m->data[2]); 73 if (nc->state == NCSI_CHANNEL_ACTIVE) 74 nla_put_flag(skb, NCSI_CHANNEL_ATTR_ACTIVE); 75 if (nc == nc->package->preferred_channel) 76 nla_put_flag(skb, NCSI_CHANNEL_ATTR_FORCED); 77 78 nla_put_u32(skb, NCSI_CHANNEL_ATTR_VERSION_MAJOR, nc->version.version); 79 nla_put_u32(skb, NCSI_CHANNEL_ATTR_VERSION_MINOR, nc->version.alpha2); 80 nla_put_string(skb, NCSI_CHANNEL_ATTR_VERSION_STR, nc->version.fw_name); 81 82 vid_nest = nla_nest_start(skb, NCSI_CHANNEL_ATTR_VLAN_LIST); 83 if (!vid_nest) 84 return -ENOMEM; 85 ncf = &nc->vlan_filter; 86 i = -1; 87 while ((i = find_next_bit((void *)&ncf->bitmap, ncf->n_vids, 88 i + 1)) < ncf->n_vids) { 89 if (ncf->vids[i]) 90 nla_put_u16(skb, NCSI_CHANNEL_ATTR_VLAN_ID, 91 ncf->vids[i]); 92 } 93 nla_nest_end(skb, vid_nest); 94 95 return 0; 96 } 97 98 static int ncsi_write_package_info(struct sk_buff *skb, 99 struct ncsi_dev_priv *ndp, unsigned int id) 100 { 101 struct nlattr *pnest, *cnest, *nest; 102 struct ncsi_package *np; 103 struct ncsi_channel *nc; 104 bool found; 105 int rc; 106 107 if (id > ndp->package_num - 1) { 108 netdev_info(ndp->ndev.dev, "NCSI: No package with id %u\n", id); 109 return -ENODEV; 110 } 111 112 found = false; 113 NCSI_FOR_EACH_PACKAGE(ndp, np) { 114 if (np->id != id) 115 continue; 116 pnest = nla_nest_start(skb, NCSI_PKG_ATTR); 117 if (!pnest) 118 return -ENOMEM; 119 nla_put_u32(skb, NCSI_PKG_ATTR_ID, np->id); 120 if ((0x1 << np->id) == ndp->package_whitelist) 121 nla_put_flag(skb, NCSI_PKG_ATTR_FORCED); 122 cnest = nla_nest_start(skb, NCSI_PKG_ATTR_CHANNEL_LIST); 123 if (!cnest) { 124 nla_nest_cancel(skb, pnest); 125 return -ENOMEM; 126 } 127 NCSI_FOR_EACH_CHANNEL(np, nc) { 128 nest = nla_nest_start(skb, NCSI_CHANNEL_ATTR); 129 if (!nest) { 130 nla_nest_cancel(skb, cnest); 131 nla_nest_cancel(skb, pnest); 132 return -ENOMEM; 133 } 134 rc = ncsi_write_channel_info(skb, ndp, nc); 135 if (rc) { 136 nla_nest_cancel(skb, nest); 137 nla_nest_cancel(skb, cnest); 138 nla_nest_cancel(skb, pnest); 139 return rc; 140 } 141 nla_nest_end(skb, nest); 142 } 143 nla_nest_end(skb, cnest); 144 nla_nest_end(skb, pnest); 145 found = true; 146 } 147 148 if (!found) 149 return -ENODEV; 150 151 return 0; 152 } 153 154 static int ncsi_pkg_info_nl(struct sk_buff *msg, struct genl_info *info) 155 { 156 struct ncsi_dev_priv *ndp; 157 unsigned int package_id; 158 struct sk_buff *skb; 159 struct nlattr *attr; 160 void *hdr; 161 int rc; 162 163 if (!info || !info->attrs) 164 return -EINVAL; 165 166 if (!info->attrs[NCSI_ATTR_IFINDEX]) 167 return -EINVAL; 168 169 if (!info->attrs[NCSI_ATTR_PACKAGE_ID]) 170 return -EINVAL; 171 172 ndp = ndp_from_ifindex(genl_info_net(info), 173 nla_get_u32(info->attrs[NCSI_ATTR_IFINDEX])); 174 if (!ndp) 175 return -ENODEV; 176 177 skb = genlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 178 if (!skb) 179 return -ENOMEM; 180 181 hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, 182 &ncsi_genl_family, 0, NCSI_CMD_PKG_INFO); 183 if (!hdr) { 184 kfree_skb(skb); 185 return -EMSGSIZE; 186 } 187 188 package_id = nla_get_u32(info->attrs[NCSI_ATTR_PACKAGE_ID]); 189 190 attr = nla_nest_start(skb, NCSI_ATTR_PACKAGE_LIST); 191 if (!attr) { 192 kfree_skb(skb); 193 return -EMSGSIZE; 194 } 195 rc = ncsi_write_package_info(skb, ndp, package_id); 196 197 if (rc) { 198 nla_nest_cancel(skb, attr); 199 goto err; 200 } 201 202 nla_nest_end(skb, attr); 203 204 genlmsg_end(skb, hdr); 205 return genlmsg_reply(skb, info); 206 207 err: 208 kfree_skb(skb); 209 return rc; 210 } 211 212 static int ncsi_pkg_info_all_nl(struct sk_buff *skb, 213 struct netlink_callback *cb) 214 { 215 struct nlattr *attrs[NCSI_ATTR_MAX + 1]; 216 struct ncsi_package *np, *package; 217 struct ncsi_dev_priv *ndp; 218 unsigned int package_id; 219 struct nlattr *attr; 220 void *hdr; 221 int rc; 222 223 rc = genlmsg_parse(cb->nlh, &ncsi_genl_family, attrs, NCSI_ATTR_MAX, 224 ncsi_genl_policy, NULL); 225 if (rc) 226 return rc; 227 228 if (!attrs[NCSI_ATTR_IFINDEX]) 229 return -EINVAL; 230 231 ndp = ndp_from_ifindex(get_net(sock_net(skb->sk)), 232 nla_get_u32(attrs[NCSI_ATTR_IFINDEX])); 233 234 if (!ndp) 235 return -ENODEV; 236 237 package_id = cb->args[0]; 238 package = NULL; 239 NCSI_FOR_EACH_PACKAGE(ndp, np) 240 if (np->id == package_id) 241 package = np; 242 243 if (!package) 244 return 0; /* done */ 245 246 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 247 &ncsi_genl_family, NLM_F_MULTI, NCSI_CMD_PKG_INFO); 248 if (!hdr) { 249 rc = -EMSGSIZE; 250 goto err; 251 } 252 253 attr = nla_nest_start(skb, NCSI_ATTR_PACKAGE_LIST); 254 rc = ncsi_write_package_info(skb, ndp, package->id); 255 if (rc) { 256 nla_nest_cancel(skb, attr); 257 goto err; 258 } 259 260 nla_nest_end(skb, attr); 261 genlmsg_end(skb, hdr); 262 263 cb->args[0] = package_id + 1; 264 265 return skb->len; 266 err: 267 genlmsg_cancel(skb, hdr); 268 return rc; 269 } 270 271 static int ncsi_set_interface_nl(struct sk_buff *msg, struct genl_info *info) 272 { 273 struct ncsi_package *np, *package; 274 struct ncsi_channel *nc, *channel; 275 u32 package_id, channel_id; 276 struct ncsi_dev_priv *ndp; 277 unsigned long flags; 278 279 if (!info || !info->attrs) 280 return -EINVAL; 281 282 if (!info->attrs[NCSI_ATTR_IFINDEX]) 283 return -EINVAL; 284 285 if (!info->attrs[NCSI_ATTR_PACKAGE_ID]) 286 return -EINVAL; 287 288 ndp = ndp_from_ifindex(get_net(sock_net(msg->sk)), 289 nla_get_u32(info->attrs[NCSI_ATTR_IFINDEX])); 290 if (!ndp) 291 return -ENODEV; 292 293 package_id = nla_get_u32(info->attrs[NCSI_ATTR_PACKAGE_ID]); 294 package = NULL; 295 296 NCSI_FOR_EACH_PACKAGE(ndp, np) 297 if (np->id == package_id) 298 package = np; 299 if (!package) { 300 /* The user has set a package that does not exist */ 301 return -ERANGE; 302 } 303 304 channel = NULL; 305 if (info->attrs[NCSI_ATTR_CHANNEL_ID]) { 306 channel_id = nla_get_u32(info->attrs[NCSI_ATTR_CHANNEL_ID]); 307 NCSI_FOR_EACH_CHANNEL(package, nc) 308 if (nc->id == channel_id) { 309 channel = nc; 310 break; 311 } 312 if (!channel) { 313 netdev_info(ndp->ndev.dev, 314 "NCSI: Channel %u does not exist!\n", 315 channel_id); 316 return -ERANGE; 317 } 318 } 319 320 spin_lock_irqsave(&ndp->lock, flags); 321 ndp->package_whitelist = 0x1 << package->id; 322 ndp->multi_package = false; 323 spin_unlock_irqrestore(&ndp->lock, flags); 324 325 spin_lock_irqsave(&package->lock, flags); 326 package->multi_channel = false; 327 if (channel) { 328 package->channel_whitelist = 0x1 << channel->id; 329 package->preferred_channel = channel; 330 } else { 331 /* Allow any channel */ 332 package->channel_whitelist = UINT_MAX; 333 package->preferred_channel = NULL; 334 } 335 spin_unlock_irqrestore(&package->lock, flags); 336 337 if (channel) 338 netdev_info(ndp->ndev.dev, 339 "Set package 0x%x, channel 0x%x as preferred\n", 340 package_id, channel_id); 341 else 342 netdev_info(ndp->ndev.dev, "Set package 0x%x as preferred\n", 343 package_id); 344 345 /* Update channel configuration */ 346 if (!(ndp->flags & NCSI_DEV_RESET)) 347 ncsi_reset_dev(&ndp->ndev); 348 349 return 0; 350 } 351 352 static int ncsi_clear_interface_nl(struct sk_buff *msg, struct genl_info *info) 353 { 354 struct ncsi_dev_priv *ndp; 355 struct ncsi_package *np; 356 unsigned long flags; 357 358 if (!info || !info->attrs) 359 return -EINVAL; 360 361 if (!info->attrs[NCSI_ATTR_IFINDEX]) 362 return -EINVAL; 363 364 ndp = ndp_from_ifindex(get_net(sock_net(msg->sk)), 365 nla_get_u32(info->attrs[NCSI_ATTR_IFINDEX])); 366 if (!ndp) 367 return -ENODEV; 368 369 /* Reset any whitelists and disable multi mode */ 370 spin_lock_irqsave(&ndp->lock, flags); 371 ndp->package_whitelist = UINT_MAX; 372 ndp->multi_package = false; 373 spin_unlock_irqrestore(&ndp->lock, flags); 374 375 NCSI_FOR_EACH_PACKAGE(ndp, np) { 376 spin_lock_irqsave(&np->lock, flags); 377 np->multi_channel = false; 378 np->channel_whitelist = UINT_MAX; 379 np->preferred_channel = NULL; 380 spin_unlock_irqrestore(&np->lock, flags); 381 } 382 netdev_info(ndp->ndev.dev, "NCSI: Cleared preferred package/channel\n"); 383 384 /* Update channel configuration */ 385 if (!(ndp->flags & NCSI_DEV_RESET)) 386 ncsi_reset_dev(&ndp->ndev); 387 388 return 0; 389 } 390 391 static int ncsi_send_cmd_nl(struct sk_buff *msg, struct genl_info *info) 392 { 393 struct ncsi_dev_priv *ndp; 394 struct ncsi_pkt_hdr *hdr; 395 struct ncsi_cmd_arg nca; 396 unsigned char *data; 397 u32 package_id; 398 u32 channel_id; 399 int len, ret; 400 401 if (!info || !info->attrs) { 402 ret = -EINVAL; 403 goto out; 404 } 405 406 if (!info->attrs[NCSI_ATTR_IFINDEX]) { 407 ret = -EINVAL; 408 goto out; 409 } 410 411 if (!info->attrs[NCSI_ATTR_PACKAGE_ID]) { 412 ret = -EINVAL; 413 goto out; 414 } 415 416 if (!info->attrs[NCSI_ATTR_CHANNEL_ID]) { 417 ret = -EINVAL; 418 goto out; 419 } 420 421 if (!info->attrs[NCSI_ATTR_DATA]) { 422 ret = -EINVAL; 423 goto out; 424 } 425 426 ndp = ndp_from_ifindex(get_net(sock_net(msg->sk)), 427 nla_get_u32(info->attrs[NCSI_ATTR_IFINDEX])); 428 if (!ndp) { 429 ret = -ENODEV; 430 goto out; 431 } 432 433 package_id = nla_get_u32(info->attrs[NCSI_ATTR_PACKAGE_ID]); 434 channel_id = nla_get_u32(info->attrs[NCSI_ATTR_CHANNEL_ID]); 435 436 if (package_id >= NCSI_MAX_PACKAGE || channel_id >= NCSI_MAX_CHANNEL) { 437 ret = -ERANGE; 438 goto out_netlink; 439 } 440 441 len = nla_len(info->attrs[NCSI_ATTR_DATA]); 442 if (len < sizeof(struct ncsi_pkt_hdr)) { 443 netdev_info(ndp->ndev.dev, "NCSI: no command to send %u\n", 444 package_id); 445 ret = -EINVAL; 446 goto out_netlink; 447 } else { 448 data = (unsigned char *)nla_data(info->attrs[NCSI_ATTR_DATA]); 449 } 450 451 hdr = (struct ncsi_pkt_hdr *)data; 452 453 nca.ndp = ndp; 454 nca.package = (unsigned char)package_id; 455 nca.channel = (unsigned char)channel_id; 456 nca.type = hdr->type; 457 nca.req_flags = NCSI_REQ_FLAG_NETLINK_DRIVEN; 458 nca.info = info; 459 nca.payload = ntohs(hdr->length); 460 nca.data = data + sizeof(*hdr); 461 462 ret = ncsi_xmit_cmd(&nca); 463 out_netlink: 464 if (ret != 0) { 465 netdev_err(ndp->ndev.dev, 466 "NCSI: Error %d sending command\n", 467 ret); 468 ncsi_send_netlink_err(ndp->ndev.dev, 469 info->snd_seq, 470 info->snd_portid, 471 info->nlhdr, 472 ret); 473 } 474 out: 475 return ret; 476 } 477 478 int ncsi_send_netlink_rsp(struct ncsi_request *nr, 479 struct ncsi_package *np, 480 struct ncsi_channel *nc) 481 { 482 struct sk_buff *skb; 483 struct net *net; 484 void *hdr; 485 int rc; 486 487 net = dev_net(nr->rsp->dev); 488 489 skb = genlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 490 if (!skb) 491 return -ENOMEM; 492 493 hdr = genlmsg_put(skb, nr->snd_portid, nr->snd_seq, 494 &ncsi_genl_family, 0, NCSI_CMD_SEND_CMD); 495 if (!hdr) { 496 kfree_skb(skb); 497 return -EMSGSIZE; 498 } 499 500 nla_put_u32(skb, NCSI_ATTR_IFINDEX, nr->rsp->dev->ifindex); 501 if (np) 502 nla_put_u32(skb, NCSI_ATTR_PACKAGE_ID, np->id); 503 if (nc) 504 nla_put_u32(skb, NCSI_ATTR_CHANNEL_ID, nc->id); 505 else 506 nla_put_u32(skb, NCSI_ATTR_CHANNEL_ID, NCSI_RESERVED_CHANNEL); 507 508 rc = nla_put(skb, NCSI_ATTR_DATA, nr->rsp->len, (void *)nr->rsp->data); 509 if (rc) 510 goto err; 511 512 genlmsg_end(skb, hdr); 513 return genlmsg_unicast(net, skb, nr->snd_portid); 514 515 err: 516 kfree_skb(skb); 517 return rc; 518 } 519 520 int ncsi_send_netlink_timeout(struct ncsi_request *nr, 521 struct ncsi_package *np, 522 struct ncsi_channel *nc) 523 { 524 struct sk_buff *skb; 525 struct net *net; 526 void *hdr; 527 528 skb = genlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 529 if (!skb) 530 return -ENOMEM; 531 532 hdr = genlmsg_put(skb, nr->snd_portid, nr->snd_seq, 533 &ncsi_genl_family, 0, NCSI_CMD_SEND_CMD); 534 if (!hdr) { 535 kfree_skb(skb); 536 return -EMSGSIZE; 537 } 538 539 net = dev_net(nr->cmd->dev); 540 541 nla_put_u32(skb, NCSI_ATTR_IFINDEX, nr->cmd->dev->ifindex); 542 543 if (np) 544 nla_put_u32(skb, NCSI_ATTR_PACKAGE_ID, np->id); 545 else 546 nla_put_u32(skb, NCSI_ATTR_PACKAGE_ID, 547 NCSI_PACKAGE_INDEX((((struct ncsi_pkt_hdr *) 548 nr->cmd->data)->channel))); 549 550 if (nc) 551 nla_put_u32(skb, NCSI_ATTR_CHANNEL_ID, nc->id); 552 else 553 nla_put_u32(skb, NCSI_ATTR_CHANNEL_ID, NCSI_RESERVED_CHANNEL); 554 555 genlmsg_end(skb, hdr); 556 return genlmsg_unicast(net, skb, nr->snd_portid); 557 } 558 559 int ncsi_send_netlink_err(struct net_device *dev, 560 u32 snd_seq, 561 u32 snd_portid, 562 struct nlmsghdr *nlhdr, 563 int err) 564 { 565 struct nlmsghdr *nlh; 566 struct nlmsgerr *nle; 567 struct sk_buff *skb; 568 struct net *net; 569 570 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 571 if (!skb) 572 return -ENOMEM; 573 574 net = dev_net(dev); 575 576 nlh = nlmsg_put(skb, snd_portid, snd_seq, 577 NLMSG_ERROR, sizeof(*nle), 0); 578 nle = (struct nlmsgerr *)nlmsg_data(nlh); 579 nle->error = err; 580 memcpy(&nle->msg, nlhdr, sizeof(*nlh)); 581 582 nlmsg_end(skb, nlh); 583 584 return nlmsg_unicast(net->genl_sock, skb, snd_portid); 585 } 586 587 static int ncsi_set_package_mask_nl(struct sk_buff *msg, 588 struct genl_info *info) 589 { 590 struct ncsi_dev_priv *ndp; 591 unsigned long flags; 592 int rc; 593 594 if (!info || !info->attrs) 595 return -EINVAL; 596 597 if (!info->attrs[NCSI_ATTR_IFINDEX]) 598 return -EINVAL; 599 600 if (!info->attrs[NCSI_ATTR_PACKAGE_MASK]) 601 return -EINVAL; 602 603 ndp = ndp_from_ifindex(get_net(sock_net(msg->sk)), 604 nla_get_u32(info->attrs[NCSI_ATTR_IFINDEX])); 605 if (!ndp) 606 return -ENODEV; 607 608 spin_lock_irqsave(&ndp->lock, flags); 609 if (nla_get_flag(info->attrs[NCSI_ATTR_MULTI_FLAG])) { 610 if (ndp->flags & NCSI_DEV_HWA) { 611 ndp->multi_package = true; 612 rc = 0; 613 } else { 614 netdev_err(ndp->ndev.dev, 615 "NCSI: Can't use multiple packages without HWA\n"); 616 rc = -EPERM; 617 } 618 } else { 619 ndp->multi_package = false; 620 rc = 0; 621 } 622 623 if (!rc) 624 ndp->package_whitelist = 625 nla_get_u32(info->attrs[NCSI_ATTR_PACKAGE_MASK]); 626 spin_unlock_irqrestore(&ndp->lock, flags); 627 628 if (!rc) { 629 /* Update channel configuration */ 630 if (!(ndp->flags & NCSI_DEV_RESET)) 631 ncsi_reset_dev(&ndp->ndev); 632 } 633 634 return rc; 635 } 636 637 static int ncsi_set_channel_mask_nl(struct sk_buff *msg, 638 struct genl_info *info) 639 { 640 struct ncsi_package *np, *package; 641 struct ncsi_channel *nc, *channel; 642 u32 package_id, channel_id; 643 struct ncsi_dev_priv *ndp; 644 unsigned long flags; 645 646 if (!info || !info->attrs) 647 return -EINVAL; 648 649 if (!info->attrs[NCSI_ATTR_IFINDEX]) 650 return -EINVAL; 651 652 if (!info->attrs[NCSI_ATTR_PACKAGE_ID]) 653 return -EINVAL; 654 655 if (!info->attrs[NCSI_ATTR_CHANNEL_MASK]) 656 return -EINVAL; 657 658 ndp = ndp_from_ifindex(get_net(sock_net(msg->sk)), 659 nla_get_u32(info->attrs[NCSI_ATTR_IFINDEX])); 660 if (!ndp) 661 return -ENODEV; 662 663 package_id = nla_get_u32(info->attrs[NCSI_ATTR_PACKAGE_ID]); 664 package = NULL; 665 NCSI_FOR_EACH_PACKAGE(ndp, np) 666 if (np->id == package_id) { 667 package = np; 668 break; 669 } 670 if (!package) 671 return -ERANGE; 672 673 spin_lock_irqsave(&package->lock, flags); 674 675 channel = NULL; 676 if (info->attrs[NCSI_ATTR_CHANNEL_ID]) { 677 channel_id = nla_get_u32(info->attrs[NCSI_ATTR_CHANNEL_ID]); 678 NCSI_FOR_EACH_CHANNEL(np, nc) 679 if (nc->id == channel_id) { 680 channel = nc; 681 break; 682 } 683 if (!channel) { 684 spin_unlock_irqrestore(&package->lock, flags); 685 return -ERANGE; 686 } 687 netdev_dbg(ndp->ndev.dev, 688 "NCSI: Channel %u set as preferred channel\n", 689 channel->id); 690 } 691 692 package->channel_whitelist = 693 nla_get_u32(info->attrs[NCSI_ATTR_CHANNEL_MASK]); 694 if (package->channel_whitelist == 0) 695 netdev_dbg(ndp->ndev.dev, 696 "NCSI: Package %u set to all channels disabled\n", 697 package->id); 698 699 package->preferred_channel = channel; 700 701 if (nla_get_flag(info->attrs[NCSI_ATTR_MULTI_FLAG])) { 702 package->multi_channel = true; 703 netdev_info(ndp->ndev.dev, 704 "NCSI: Multi-channel enabled on package %u\n", 705 package_id); 706 } else { 707 package->multi_channel = false; 708 } 709 710 spin_unlock_irqrestore(&package->lock, flags); 711 712 /* Update channel configuration */ 713 if (!(ndp->flags & NCSI_DEV_RESET)) 714 ncsi_reset_dev(&ndp->ndev); 715 716 return 0; 717 } 718 719 static const struct genl_ops ncsi_ops[] = { 720 { 721 .cmd = NCSI_CMD_PKG_INFO, 722 .policy = ncsi_genl_policy, 723 .doit = ncsi_pkg_info_nl, 724 .dumpit = ncsi_pkg_info_all_nl, 725 .flags = 0, 726 }, 727 { 728 .cmd = NCSI_CMD_SET_INTERFACE, 729 .policy = ncsi_genl_policy, 730 .doit = ncsi_set_interface_nl, 731 .flags = GENL_ADMIN_PERM, 732 }, 733 { 734 .cmd = NCSI_CMD_CLEAR_INTERFACE, 735 .policy = ncsi_genl_policy, 736 .doit = ncsi_clear_interface_nl, 737 .flags = GENL_ADMIN_PERM, 738 }, 739 { 740 .cmd = NCSI_CMD_SEND_CMD, 741 .policy = ncsi_genl_policy, 742 .doit = ncsi_send_cmd_nl, 743 .flags = GENL_ADMIN_PERM, 744 }, 745 { 746 .cmd = NCSI_CMD_SET_PACKAGE_MASK, 747 .policy = ncsi_genl_policy, 748 .doit = ncsi_set_package_mask_nl, 749 .flags = GENL_ADMIN_PERM, 750 }, 751 { 752 .cmd = NCSI_CMD_SET_CHANNEL_MASK, 753 .policy = ncsi_genl_policy, 754 .doit = ncsi_set_channel_mask_nl, 755 .flags = GENL_ADMIN_PERM, 756 }, 757 }; 758 759 static struct genl_family ncsi_genl_family __ro_after_init = { 760 .name = "NCSI", 761 .version = 0, 762 .maxattr = NCSI_ATTR_MAX, 763 .module = THIS_MODULE, 764 .ops = ncsi_ops, 765 .n_ops = ARRAY_SIZE(ncsi_ops), 766 }; 767 768 int ncsi_init_netlink(struct net_device *dev) 769 { 770 int rc; 771 772 rc = genl_register_family(&ncsi_genl_family); 773 if (rc) 774 netdev_err(dev, "ncsi: failed to register netlink family\n"); 775 776 return rc; 777 } 778 779 int ncsi_unregister_netlink(struct net_device *dev) 780 { 781 int rc; 782 783 rc = genl_unregister_family(&ncsi_genl_family); 784 if (rc) 785 netdev_err(dev, "ncsi: failed to unregister netlink family\n"); 786 787 return rc; 788 } 789