Changeset 3621 in MondoRescue for branches/3.3/mindi-busybox/networking/libiproute/iplink.c
- Timestamp:
- Dec 20, 2016, 4:07:32 PM (7 years ago)
- Location:
- branches/3.3
- Files:
-
- 1 edited
- 1 copied
Legend:
- Unmodified
- Added
- Removed
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branches/3.3/mindi-busybox/networking/libiproute/iplink.c
r3232 r3621 2 2 /* 3 3 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> 4 * Patrick McHardy <kaber@trash.net> 4 5 * 5 6 * Licensed under GPLv2 or later, see file LICENSE in this source tree. 6 7 */ 7 8 #include <net/if.h> 8 #include <net/if_packet.h> 9 /*#include <net/if_packet.h> - not needed? */ 9 10 #include <netpacket/packet.h> 10 11 #include <netinet/if_ether.h> 11 12 13 #include <linux/if_vlan.h> 12 14 #include "ip_common.h" /* #include "libbb.h" is inside */ 13 15 #include "rt_names.h" 14 16 #include "utils.h" 15 17 18 #undef ETH_P_8021AD 19 #define ETH_P_8021AD 0x88A8 20 #undef VLAN_FLAG_REORDER_HDR 21 #define VLAN_FLAG_REORDER_HDR 0x1 22 #undef VLAN_FLAG_GVRP 23 #define VLAN_FLAG_GVRP 0x2 24 #undef VLAN_FLAG_LOOSE_BINDING 25 #define VLAN_FLAG_LOOSE_BINDING 0x4 26 #undef VLAN_FLAG_MVRP 27 #define VLAN_FLAG_MVRP 0x8 28 #undef IFLA_VLAN_PROTOCOL 29 #define IFLA_VLAN_PROTOCOL 5 30 16 31 #ifndef IFLA_LINKINFO 17 32 # define IFLA_LINKINFO 18 18 33 # define IFLA_INFO_KIND 1 34 # define IFLA_INFO_DATA 2 35 #endif 36 37 #ifndef IFLA_VLAN_MAX 38 # define IFLA_VLAN_ID 1 39 # define IFLA_VLAN_FLAGS 2 40 struct ifla_vlan_flags { 41 uint32_t flags; 42 uint32_t mask; 43 }; 19 44 #endif 20 45 21 46 /* taken from linux/sockios.h */ 22 47 #define SIOCSIFNAME 0x8923 /* set interface name */ 48 49 #if 0 50 # define dbg(...) bb_error_msg(__VA_ARGS__) 51 #else 52 # define dbg(...) ((void)0) 53 #endif 23 54 24 55 /* Exits on error */ … … 278 309 } 279 310 311 static void vlan_parse_opt(char **argv, struct nlmsghdr *n, unsigned int size) 312 { 313 static const char keywords[] ALIGN1 = 314 "id\0" 315 "protocol\0" 316 "reorder_hdr\0" 317 "gvrp\0" 318 "mvrp\0" 319 "loose_binding\0" 320 ; 321 static const char protocols[] ALIGN1 = 322 "802.1q\0" 323 "802.1ad\0" 324 ; 325 static const char str_on_off[] ALIGN1 = 326 "on\0" 327 "off\0" 328 ; 329 enum { 330 ARG_id = 0, 331 ARG_reorder_hdr, 332 ARG_gvrp, 333 ARG_mvrp, 334 ARG_loose_binding, 335 ARG_protocol, 336 }; 337 enum { 338 PROTO_8021Q = 0, 339 PROTO_8021AD, 340 }; 341 enum { 342 PARM_on = 0, 343 PARM_off 344 }; 345 int arg; 346 uint16_t id, proto; 347 struct ifla_vlan_flags flags = {}; 348 349 while (*argv) { 350 arg = index_in_substrings(keywords, *argv); 351 if (arg < 0) 352 invarg_1_to_2(*argv, "type vlan"); 353 354 NEXT_ARG(); 355 if (arg == ARG_id) { 356 id = get_u16(*argv, "id"); 357 addattr_l(n, size, IFLA_VLAN_ID, &id, sizeof(id)); 358 } else if (arg == ARG_protocol) { 359 arg = index_in_substrings(protocols, *argv); 360 if (arg == PROTO_8021Q) 361 proto = ETH_P_8021Q; 362 else if (arg == PROTO_8021AD) 363 proto = ETH_P_8021AD; 364 else 365 bb_error_msg_and_die("unknown VLAN encapsulation protocol '%s'", 366 *argv); 367 addattr_l(n, size, IFLA_VLAN_PROTOCOL, &proto, sizeof(proto)); 368 } else { 369 int param = index_in_strings(str_on_off, *argv); 370 if (param < 0) 371 die_must_be_on_off(nth_string(keywords, arg)); 372 373 if (arg == ARG_reorder_hdr) { 374 flags.mask |= VLAN_FLAG_REORDER_HDR; 375 flags.flags &= ~VLAN_FLAG_REORDER_HDR; 376 if (param == PARM_on) 377 flags.flags |= VLAN_FLAG_REORDER_HDR; 378 } else if (arg == ARG_gvrp) { 379 flags.mask |= VLAN_FLAG_GVRP; 380 flags.flags &= ~VLAN_FLAG_GVRP; 381 if (param == PARM_on) 382 flags.flags |= VLAN_FLAG_GVRP; 383 } else if (arg == ARG_mvrp) { 384 flags.mask |= VLAN_FLAG_MVRP; 385 flags.flags &= ~VLAN_FLAG_MVRP; 386 if (param == PARM_on) 387 flags.flags |= VLAN_FLAG_MVRP; 388 } else { /*if (arg == ARG_loose_binding) */ 389 flags.mask |= VLAN_FLAG_LOOSE_BINDING; 390 flags.flags &= ~VLAN_FLAG_LOOSE_BINDING; 391 if (param == PARM_on) 392 flags.flags |= VLAN_FLAG_LOOSE_BINDING; 393 } 394 } 395 argv++; 396 } 397 398 if (flags.mask) 399 addattr_l(n, size, IFLA_VLAN_FLAGS, &flags, sizeof(flags)); 400 } 401 280 402 #ifndef NLMSG_TAIL 281 403 #define NLMSG_TAIL(nmsg) \ … … 283 405 #endif 284 406 /* Return value becomes exitcode. It's okay to not return at all */ 285 static int do_ change(char **argv, const unsigned rtm)407 static int do_add_or_delete(char **argv, const unsigned rtm) 286 408 { 287 409 static const char keywords[] ALIGN1 = 288 "link\0""name\0""type\0""dev\0" ;410 "link\0""name\0""type\0""dev\0""address\0"; 289 411 enum { 290 412 ARG_link, … … 292 414 ARG_type, 293 415 ARG_dev, 416 ARG_address, 294 417 }; 295 418 struct rtnl_handle rth; … … 300 423 } req; 301 424 smalluint arg; 302 char *name_str = NULL, *link_str = NULL, *type_str = NULL, *dev_str = NULL; 425 char *name_str = NULL; 426 char *link_str = NULL; 427 char *type_str = NULL; 428 char *dev_str = NULL; 429 char *address_str = NULL; 303 430 304 431 memset(&req, 0, sizeof(req)); … … 313 440 while (*argv) { 314 441 arg = index_in_substrings(keywords, *argv); 442 if (arg == ARG_type) { 443 NEXT_ARG(); 444 type_str = *argv++; 445 dbg("type_str:'%s'", type_str); 446 break; 447 } 315 448 if (arg == ARG_link) { 316 449 NEXT_ARG(); 317 450 link_str = *argv; 451 dbg("link_str:'%s'", link_str); 318 452 } else if (arg == ARG_name) { 319 453 NEXT_ARG(); 320 454 name_str = *argv; 321 } else if (arg == ARG_type) { 322 NEXT_ARG(); 323 type_str = *argv; 455 dbg("name_str:'%s'", name_str); 456 } else if (arg == ARG_address) { 457 NEXT_ARG(); 458 address_str = *argv; 459 dbg("address_str:'%s'", name_str); 324 460 } else { 325 461 if (arg == ARG_dev) { … … 329 465 } 330 466 dev_str = *argv; 467 dbg("dev_str:'%s'", dev_str); 331 468 } 332 469 argv++; … … 340 477 addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, type_str, 341 478 strlen(type_str)); 479 480 if (*argv) { 481 struct rtattr *data = NLMSG_TAIL(&req.n); 482 addattr_l(&req.n, sizeof(req), IFLA_INFO_DATA, NULL, 0); 483 484 if (strcmp(type_str, "vlan") == 0) 485 vlan_parse_opt(argv, &req.n, sizeof(req)); 486 487 data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data; 488 } 489 342 490 linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo; 343 491 } … … 353 501 addattr_l(&req.n, sizeof(req), IFLA_LINK, &idx, 4); 354 502 } 503 if (address_str) { 504 unsigned char abuf[32]; 505 int len = ll_addr_a2n(abuf, sizeof(abuf), address_str); 506 dbg("address len:%d", len); 507 if (len < 0) 508 return -1; 509 addattr_l(&req.n, sizeof(req), IFLA_ADDRESS, abuf, len); 510 } 355 511 } 356 512 if (name_str) { 357 513 const size_t name_len = strlen(name_str) + 1; 358 514 if (name_len < 2 || name_len > IFNAMSIZ) 359 invarg (name_str, "name");515 invarg_1_to_2(name_str, "name"); 360 516 addattr_l(&req.n, sizeof(req), IFLA_IFNAME, name_str, name_len); 361 517 } … … 365 521 } 366 522 523 /* Other keywords recognized by iproute2-3.12.0: */ 524 #if 0 525 } else if (matches(*argv, "broadcast") == 0 || 526 strcmp(*argv, "brd") == 0) { 527 NEXT_ARG(); 528 len = ll_addr_a2n(abuf, sizeof(abuf), *argv); 529 if (len < 0) 530 return -1; 531 addattr_l(&req->n, sizeof(*req), IFLA_BROADCAST, abuf, len); 532 } else if (matches(*argv, "txqueuelen") == 0 || 533 strcmp(*argv, "qlen") == 0 || 534 matches(*argv, "txqlen") == 0) { 535 NEXT_ARG(); 536 if (qlen != -1) 537 duparg("txqueuelen", *argv); 538 if (get_integer(&qlen, *argv, 0)) 539 invarg_1_to_2(*argv, "txqueuelen"); 540 addattr_l(&req->n, sizeof(*req), IFLA_TXQLEN, &qlen, 4); 541 } else if (strcmp(*argv, "mtu") == 0) { 542 NEXT_ARG(); 543 if (mtu != -1) 544 duparg("mtu", *argv); 545 if (get_integer(&mtu, *argv, 0)) 546 invarg_1_to_2(*argv, "mtu"); 547 addattr_l(&req->n, sizeof(*req), IFLA_MTU, &mtu, 4); 548 } else if (strcmp(*argv, "netns") == 0) { 549 NEXT_ARG(); 550 if (netns != -1) 551 duparg("netns", *argv); 552 if ((netns = get_netns_fd(*argv)) >= 0) 553 addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_FD, &netns, 4); 554 else if (get_integer(&netns, *argv, 0) == 0) 555 addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_PID, &netns, 4); 556 else 557 invarg_1_to_2(*argv, "netns"); 558 } else if (strcmp(*argv, "multicast") == 0) { 559 NEXT_ARG(); 560 req->i.ifi_change |= IFF_MULTICAST; 561 if (strcmp(*argv, "on") == 0) { 562 req->i.ifi_flags |= IFF_MULTICAST; 563 } else if (strcmp(*argv, "off") == 0) { 564 req->i.ifi_flags &= ~IFF_MULTICAST; 565 } else 566 return on_off("multicast", *argv); 567 } else if (strcmp(*argv, "allmulticast") == 0) { 568 NEXT_ARG(); 569 req->i.ifi_change |= IFF_ALLMULTI; 570 if (strcmp(*argv, "on") == 0) { 571 req->i.ifi_flags |= IFF_ALLMULTI; 572 } else if (strcmp(*argv, "off") == 0) { 573 req->i.ifi_flags &= ~IFF_ALLMULTI; 574 } else 575 return on_off("allmulticast", *argv); 576 } else if (strcmp(*argv, "promisc") == 0) { 577 NEXT_ARG(); 578 req->i.ifi_change |= IFF_PROMISC; 579 if (strcmp(*argv, "on") == 0) { 580 req->i.ifi_flags |= IFF_PROMISC; 581 } else if (strcmp(*argv, "off") == 0) { 582 req->i.ifi_flags &= ~IFF_PROMISC; 583 } else 584 return on_off("promisc", *argv); 585 } else if (strcmp(*argv, "trailers") == 0) { 586 NEXT_ARG(); 587 req->i.ifi_change |= IFF_NOTRAILERS; 588 if (strcmp(*argv, "off") == 0) { 589 req->i.ifi_flags |= IFF_NOTRAILERS; 590 } else if (strcmp(*argv, "on") == 0) { 591 req->i.ifi_flags &= ~IFF_NOTRAILERS; 592 } else 593 return on_off("trailers", *argv); 594 } else if (strcmp(*argv, "arp") == 0) { 595 NEXT_ARG(); 596 req->i.ifi_change |= IFF_NOARP; 597 if (strcmp(*argv, "on") == 0) { 598 req->i.ifi_flags &= ~IFF_NOARP; 599 } else if (strcmp(*argv, "off") == 0) { 600 req->i.ifi_flags |= IFF_NOARP; 601 } else 602 return on_off("noarp", *argv); 603 } else if (strcmp(*argv, "vf") == 0) { 604 struct rtattr *vflist; 605 NEXT_ARG(); 606 if (get_integer(&vf, *argv, 0)) { 607 invarg_1_to_2(*argv, "vf"); 608 } 609 vflist = addattr_nest(&req->n, sizeof(*req), 610 IFLA_VFINFO_LIST); 611 len = iplink_parse_vf(vf, &argc, &argv, req); 612 if (len < 0) 613 return -1; 614 addattr_nest_end(&req->n, vflist); 615 } else if (matches(*argv, "master") == 0) { 616 int ifindex; 617 NEXT_ARG(); 618 ifindex = ll_name_to_index(*argv); 619 if (!ifindex) 620 invarg_1_to_2(*argv, "master"); 621 addattr_l(&req->n, sizeof(*req), IFLA_MASTER, 622 &ifindex, 4); 623 } else if (matches(*argv, "nomaster") == 0) { 624 int ifindex = 0; 625 addattr_l(&req->n, sizeof(*req), IFLA_MASTER, 626 &ifindex, 4); 627 } else if (matches(*argv, "dynamic") == 0) { 628 NEXT_ARG(); 629 req->i.ifi_change |= IFF_DYNAMIC; 630 if (strcmp(*argv, "on") == 0) { 631 req->i.ifi_flags |= IFF_DYNAMIC; 632 } else if (strcmp(*argv, "off") == 0) { 633 req->i.ifi_flags &= ~IFF_DYNAMIC; 634 } else 635 return on_off("dynamic", *argv); 636 } else if (matches(*argv, "alias") == 0) { 637 NEXT_ARG(); 638 addattr_l(&req->n, sizeof(*req), IFLA_IFALIAS, 639 *argv, strlen(*argv)); 640 argc--; argv++; 641 break; 642 } else if (strcmp(*argv, "group") == 0) { 643 NEXT_ARG(); 644 if (*group != -1) 645 duparg("group", *argv); 646 if (rtnl_group_a2n(group, *argv)) 647 invarg_1_to_2(*argv, "group"); 648 } else if (strcmp(*argv, "mode") == 0) { 649 int mode; 650 NEXT_ARG(); 651 mode = get_link_mode(*argv); 652 if (mode < 0) 653 invarg_1_to_2(*argv, "mode"); 654 addattr8(&req->n, sizeof(*req), IFLA_LINKMODE, mode); 655 } else if (strcmp(*argv, "state") == 0) { 656 int state; 657 NEXT_ARG(); 658 state = get_operstate(*argv); 659 if (state < 0) 660 invarg_1_to_2(*argv, "state"); 661 addattr8(&req->n, sizeof(*req), IFLA_OPERSTATE, state); 662 } else if (matches(*argv, "numtxqueues") == 0) { 663 NEXT_ARG(); 664 if (numtxqueues != -1) 665 duparg("numtxqueues", *argv); 666 if (get_integer(&numtxqueues, *argv, 0)) 667 invarg_1_to_2(*argv, "numtxqueues"); 668 addattr_l(&req->n, sizeof(*req), IFLA_NUM_TX_QUEUES, 669 &numtxqueues, 4); 670 } else if (matches(*argv, "numrxqueues") == 0) { 671 NEXT_ARG(); 672 if (numrxqueues != -1) 673 duparg("numrxqueues", *argv); 674 if (get_integer(&numrxqueues, *argv, 0)) 675 invarg_1_to_2(*argv, "numrxqueues"); 676 addattr_l(&req->n, sizeof(*req), IFLA_NUM_RX_QUEUES, 677 &numrxqueues, 4); 678 } 679 #endif 680 367 681 /* Return value becomes exitcode. It's okay to not return at all */ 368 682 int FAST_FUNC do_iplink(char **argv) … … 371 685 "add\0""delete\0""set\0""show\0""lst\0""list\0"; 372 686 if (*argv) { 373 smalluint key = index_in_substrings(keywords, *argv);374 if (key > 5) /* invalid argument */375 bb_error_msg_and_die(bb_msg_invalid_arg,*argv, applet_name);687 int key = index_in_substrings(keywords, *argv); 688 if (key < 0) /* invalid argument */ 689 invarg_1_to_2(*argv, applet_name); 376 690 argv++; 377 691 if (key <= 1) /* add/delete */ 378 return do_ change(argv, key ? RTM_DELLINK : RTM_NEWLINK);379 elseif (key == 2) /* set */692 return do_add_or_delete(argv, key ? RTM_DELLINK : RTM_NEWLINK); 693 if (key == 2) /* set */ 380 694 return do_set(argv); 381 695 }
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