Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 | /*
* Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/string.h>
#include <linux/etherdevice.h>
#include <linux/mlx4/cmd.h>
#include <linux/export.h>
#include "mlx4.h"
#define MGM_QPN_MASK 0x00FFFFFF
#define MGM_BLCK_LB_BIT 30
static const u8 zero_gid[16]; /* automatically initialized to 0 */
struct mlx4_mgm {
__be32 next_gid_index;
__be32 members_count;
u32 reserved[2];
u8 gid[16];
__be32 qp[MLX4_MAX_QP_PER_MGM];
};
int mlx4_get_mgm_entry_size(struct mlx4_dev *dev)
{
return min((1 << mlx4_log_num_mgm_entry_size), MLX4_MAX_MGM_ENTRY_SIZE);
}
int mlx4_get_qp_per_mgm(struct mlx4_dev *dev)
{
return 4 * (mlx4_get_mgm_entry_size(dev) / 16 - 2);
}
static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index,
struct mlx4_cmd_mailbox *mailbox)
{
return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG,
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
}
static int mlx4_WRITE_ENTRY(struct mlx4_dev *dev, int index,
struct mlx4_cmd_mailbox *mailbox)
{
return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG,
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
}
static int mlx4_WRITE_PROMISC(struct mlx4_dev *dev, u8 port, u8 steer,
struct mlx4_cmd_mailbox *mailbox)
{
u32 in_mod;
in_mod = (u32) port << 16 | steer << 1;
return mlx4_cmd(dev, mailbox->dma, in_mod, 0x1,
MLX4_CMD_WRITE_MCG, MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
}
static int mlx4_GID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
u16 *hash, u8 op_mod)
{
u64 imm;
int err;
err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, op_mod,
MLX4_CMD_MGID_HASH, MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_NATIVE);
if (!err)
*hash = imm;
return err;
}
static struct mlx4_promisc_qp *get_promisc_qp(struct mlx4_dev *dev, u8 pf_num,
enum mlx4_steer_type steer,
u32 qpn)
{
struct mlx4_steer *s_steer = &mlx4_priv(dev)->steer[pf_num];
struct mlx4_promisc_qp *pqp;
list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
if (pqp->qpn == qpn)
return pqp;
}
/* not found */
return NULL;
}
/*
* Add new entry to steering data structure.
* All promisc QPs should be added as well
*/
static int new_steering_entry(struct mlx4_dev *dev, u8 port,
enum mlx4_steer_type steer,
unsigned int index, u32 qpn)
{
struct mlx4_steer *s_steer;
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_mgm *mgm;
u32 members_count;
struct mlx4_steer_index *new_entry;
struct mlx4_promisc_qp *pqp;
struct mlx4_promisc_qp *dqp = NULL;
u32 prot;
int err;
s_steer = &mlx4_priv(dev)->steer[port - 1];
new_entry = kzalloc(sizeof *new_entry, GFP_KERNEL);
if (!new_entry)
return -ENOMEM;
INIT_LIST_HEAD(&new_entry->duplicates);
new_entry->index = index;
list_add_tail(&new_entry->list, &s_steer->steer_entries[steer]);
/* If the given qpn is also a promisc qp,
* it should be inserted to duplicates list
*/
pqp = get_promisc_qp(dev, 0, steer, qpn);
if (pqp) {
dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
if (!dqp) {
err = -ENOMEM;
goto out_alloc;
}
dqp->qpn = qpn;
list_add_tail(&dqp->list, &new_entry->duplicates);
}
/* if no promisc qps for this vep, we are done */
if (list_empty(&s_steer->promisc_qps[steer]))
return 0;
/* now need to add all the promisc qps to the new
* steering entry, as they should also receive the packets
* destined to this address */
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox)) {
err = -ENOMEM;
goto out_alloc;
}
mgm = mailbox->buf;
err = mlx4_READ_ENTRY(dev, index, mailbox);
if (err)
goto out_mailbox;
members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
prot = be32_to_cpu(mgm->members_count) >> 30;
list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
/* don't add already existing qpn */
if (pqp->qpn == qpn)
continue;
if (members_count == dev->caps.num_qp_per_mgm) {
/* out of space */
err = -ENOMEM;
goto out_mailbox;
}
/* add the qpn */
mgm->qp[members_count++] = cpu_to_be32(pqp->qpn & MGM_QPN_MASK);
}
/* update the qps count and update the entry with all the promisc qps*/
mgm->members_count = cpu_to_be32(members_count | (prot << 30));
err = mlx4_WRITE_ENTRY(dev, index, mailbox);
out_mailbox:
mlx4_free_cmd_mailbox(dev, mailbox);
if (!err)
return 0;
out_alloc:
if (dqp) {
list_del(&dqp->list);
kfree(dqp);
}
list_del(&new_entry->list);
kfree(new_entry);
return err;
}
/* update the data structures with existing steering entry */
static int existing_steering_entry(struct mlx4_dev *dev, u8 port,
enum mlx4_steer_type steer,
unsigned int index, u32 qpn)
{
struct mlx4_steer *s_steer;
struct mlx4_steer_index *tmp_entry, *entry = NULL;
struct mlx4_promisc_qp *pqp;
struct mlx4_promisc_qp *dqp;
s_steer = &mlx4_priv(dev)->steer[port - 1];
pqp = get_promisc_qp(dev, 0, steer, qpn);
if (!pqp)
return 0; /* nothing to do */
list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
if (tmp_entry->index == index) {
entry = tmp_entry;
break;
}
}
if (unlikely(!entry)) {
mlx4_warn(dev, "Steering entry at index %x is not registered\n", index);
return -EINVAL;
}
/* the given qpn is listed as a promisc qpn
* we need to add it as a duplicate to this entry
* for future references */
list_for_each_entry(dqp, &entry->duplicates, list) {
if (qpn == pqp->qpn)
return 0; /* qp is already duplicated */
}
/* add the qp as a duplicate on this index */
dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
if (!dqp)
return -ENOMEM;
dqp->qpn = qpn;
list_add_tail(&dqp->list, &entry->duplicates);
return 0;
}
/* Check whether a qpn is a duplicate on steering entry
* If so, it should not be removed from mgm */
static bool check_duplicate_entry(struct mlx4_dev *dev, u8 port,
enum mlx4_steer_type steer,
unsigned int index, u32 qpn)
{
struct mlx4_steer *s_steer;
struct mlx4_steer_index *tmp_entry, *entry = NULL;
struct mlx4_promisc_qp *dqp, *tmp_dqp;
s_steer = &mlx4_priv(dev)->steer[port - 1];
/* if qp is not promisc, it cannot be duplicated */
if (!get_promisc_qp(dev, 0, steer, qpn))
return false;
/* The qp is promisc qp so it is a duplicate on this index
* Find the index entry, and remove the duplicate */
list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
if (tmp_entry->index == index) {
entry = tmp_entry;
break;
}
}
if (unlikely(!entry)) {
mlx4_warn(dev, "Steering entry for index %x is not registered\n", index);
return false;
}
list_for_each_entry_safe(dqp, tmp_dqp, &entry->duplicates, list) {
if (dqp->qpn == qpn) {
list_del(&dqp->list);
kfree(dqp);
}
}
return true;
}
/* I a steering entry contains only promisc QPs, it can be removed. */
static bool can_remove_steering_entry(struct mlx4_dev *dev, u8 port,
enum mlx4_steer_type steer,
unsigned int index, u32 tqpn)
{
struct mlx4_steer *s_steer;
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_mgm *mgm;
struct mlx4_steer_index *entry = NULL, *tmp_entry;
u32 qpn;
u32 members_count;
bool ret = false;
int i;
s_steer = &mlx4_priv(dev)->steer[port - 1];
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return false;
mgm = mailbox->buf;
if (mlx4_READ_ENTRY(dev, index, mailbox))
goto out;
members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
for (i = 0; i < members_count; i++) {
qpn = be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK;
if (!get_promisc_qp(dev, 0, steer, qpn) && qpn != tqpn) {
/* the qp is not promisc, the entry can't be removed */
goto out;
}
}
/* All the qps currently registered for this entry are promiscuous,
* Checking for duplicates */
ret = true;
list_for_each_entry_safe(entry, tmp_entry, &s_steer->steer_entries[steer], list) {
if (entry->index == index) {
if (list_empty(&entry->duplicates)) {
list_del(&entry->list);
kfree(entry);
} else {
/* This entry contains duplicates so it shouldn't be removed */
ret = false;
goto out;
}
}
}
out:
mlx4_free_cmd_mailbox(dev, mailbox);
return ret;
}
static int add_promisc_qp(struct mlx4_dev *dev, u8 port,
enum mlx4_steer_type steer, u32 qpn)
{
struct mlx4_steer *s_steer;
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_mgm *mgm;
struct mlx4_steer_index *entry;
struct mlx4_promisc_qp *pqp;
struct mlx4_promisc_qp *dqp;
u32 members_count;
u32 prot;
int i;
bool found;
int err;
struct mlx4_priv *priv = mlx4_priv(dev);
s_steer = &mlx4_priv(dev)->steer[port - 1];
mutex_lock(&priv->mcg_table.mutex);
if (get_promisc_qp(dev, 0, steer, qpn)) {
err = 0; /* Noting to do, already exists */
goto out_mutex;
}
pqp = kmalloc(sizeof *pqp, GFP_KERNEL);
if (!pqp) {
err = -ENOMEM;
goto out_mutex;
}
pqp->qpn = qpn;
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox)) {
err = -ENOMEM;
goto out_alloc;
}
mgm = mailbox->buf;
/* the promisc qp needs to be added for each one of the steering
* entries, if it already exists, needs to be added as a duplicate
* for this entry */
list_for_each_entry(entry, &s_steer->steer_entries[steer], list) {
err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
if (err)
goto out_mailbox;
members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
prot = be32_to_cpu(mgm->members_count) >> 30;
found = false;
for (i = 0; i < members_count; i++) {
if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qpn) {
/* Entry already exists, add to duplicates */
dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
if (!dqp)
goto out_mailbox;
dqp->qpn = qpn;
list_add_tail(&dqp->list, &entry->duplicates);
found = true;
}
}
if (!found) {
/* Need to add the qpn to mgm */
if (members_count == dev->caps.num_qp_per_mgm) {
/* entry is full */
err = -ENOMEM;
goto out_mailbox;
}
mgm->qp[members_count++] = cpu_to_be32(qpn & MGM_QPN_MASK);
mgm->members_count = cpu_to_be32(members_count | (prot << 30));
err = mlx4_WRITE_ENTRY(dev, entry->index, mailbox);
if (err)
goto out_mailbox;
}
}
/* add the new qpn to list of promisc qps */
list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
/* now need to add all the promisc qps to default entry */
memset(mgm, 0, sizeof *mgm);
members_count = 0;
list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
if (err)
goto out_list;
mlx4_free_cmd_mailbox(dev, mailbox);
mutex_unlock(&priv->mcg_table.mutex);
return 0;
out_list:
list_del(&pqp->list);
out_mailbox:
mlx4_free_cmd_mailbox(dev, mailbox);
out_alloc:
kfree(pqp);
out_mutex:
mutex_unlock(&priv->mcg_table.mutex);
return err;
}
static int remove_promisc_qp(struct mlx4_dev *dev, u8 port,
enum mlx4_steer_type steer, u32 qpn)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_steer *s_steer;
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_mgm *mgm;
struct mlx4_steer_index *entry;
struct mlx4_promisc_qp *pqp;
struct mlx4_promisc_qp *dqp;
u32 members_count;
bool found;
bool back_to_list = false;
int loc, i;
int err;
s_steer = &mlx4_priv(dev)->steer[port - 1];
mutex_lock(&priv->mcg_table.mutex);
pqp = get_promisc_qp(dev, 0, steer, qpn);
if (unlikely(!pqp)) {
mlx4_warn(dev, "QP %x is not promiscuous QP\n", qpn);
/* nothing to do */
err = 0;
goto out_mutex;
}
/*remove from list of promisc qps */
list_del(&pqp->list);
/* set the default entry not to include the removed one */
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox)) {
err = -ENOMEM;
back_to_list = true;
goto out_list;
}
mgm = mailbox->buf;
memset(mgm, 0, sizeof *mgm);
members_count = 0;
list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
if (err)
goto out_mailbox;
/* remove the qp from all the steering entries*/
list_for_each_entry(entry, &s_steer->steer_entries[steer], list) {
found = false;
list_for_each_entry(dqp, &entry->duplicates, list) {
if (dqp->qpn == qpn) {
found = true;
break;
}
}
if (found) {
/* a duplicate, no need to change the mgm,
* only update the duplicates list */
list_del(&dqp->list);
kfree(dqp);
} else {
err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
if (err)
goto out_mailbox;
members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
for (loc = -1, i = 0; i < members_count; ++i)
if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qpn)
loc = i;
mgm->members_count = cpu_to_be32(--members_count |
(MLX4_PROT_ETH << 30));
mgm->qp[loc] = mgm->qp[i - 1];
mgm->qp[i - 1] = 0;
err = mlx4_WRITE_ENTRY(dev, entry->index, mailbox);
if (err)
goto out_mailbox;
}
}
out_mailbox:
mlx4_free_cmd_mailbox(dev, mailbox);
out_list:
if (back_to_list)
list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
else
kfree(pqp);
out_mutex:
mutex_unlock(&priv->mcg_table.mutex);
return err;
}
/*
* Caller must hold MCG table semaphore. gid and mgm parameters must
* be properly aligned for command interface.
*
* Returns 0 unless a firmware command error occurs.
*
* If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
* and *mgm holds MGM entry.
*
* if GID is found in AMGM, *index = index in AMGM, *prev = index of
* previous entry in hash chain and *mgm holds AMGM entry.
*
* If no AMGM exists for given gid, *index = -1, *prev = index of last
* entry in hash chain and *mgm holds end of hash chain.
*/
static int find_entry(struct mlx4_dev *dev, u8 port,
u8 *gid, enum mlx4_protocol prot,
struct mlx4_cmd_mailbox *mgm_mailbox,
int *prev, int *index)
{
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_mgm *mgm = mgm_mailbox->buf;
u8 *mgid;
int err;
u16 hash;
u8 op_mod = (prot == MLX4_PROT_ETH) ?
!!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) : 0;
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return -ENOMEM;
mgid = mailbox->buf;
memcpy(mgid, gid, 16);
err = mlx4_GID_HASH(dev, mailbox, &hash, op_mod);
mlx4_free_cmd_mailbox(dev, mailbox);
if (err)
return err;
if (0)
mlx4_dbg(dev, "Hash for %pI6 is %04x\n", gid, hash);
*index = hash;
*prev = -1;
do {
err = mlx4_READ_ENTRY(dev, *index, mgm_mailbox);
if (err)
return err;
if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
if (*index != hash) {
mlx4_err(dev, "Found zero MGID in AMGM.\n");
err = -EINVAL;
}
return err;
}
if (!memcmp(mgm->gid, gid, 16) &&
be32_to_cpu(mgm->members_count) >> 30 == prot)
return err;
*prev = *index;
*index = be32_to_cpu(mgm->next_gid_index) >> 6;
} while (*index);
*index = -1;
return err;
}
int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
int block_mcast_loopback, enum mlx4_protocol prot,
enum mlx4_steer_type steer)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_mgm *mgm;
u32 members_count;
int index, prev;
int link = 0;
int i;
int err;
u8 port = gid[5];
u8 new_entry = 0;
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
mgm = mailbox->buf;
mutex_lock(&priv->mcg_table.mutex);
err = find_entry(dev, port, gid, prot,
mailbox, &prev, &index);
if (err)
goto out;
if (index != -1) {
if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
new_entry = 1;
memcpy(mgm->gid, gid, 16);
}
} else {
link = 1;
index = mlx4_bitmap_alloc(&priv->mcg_table.bitmap);
if (index == -1) {
mlx4_err(dev, "No AMGM entries left\n");
err = -ENOMEM;
goto out;
}
index += dev->caps.num_mgms;
new_entry = 1;
memset(mgm, 0, sizeof *mgm);
memcpy(mgm->gid, gid, 16);
}
members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
if (members_count == dev->caps.num_qp_per_mgm) {
mlx4_err(dev, "MGM at index %x is full.\n", index);
err = -ENOMEM;
goto out;
}
for (i = 0; i < members_count; ++i)
if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn);
err = 0;
goto out;
}
if (block_mcast_loopback)
mgm->qp[members_count++] = cpu_to_be32((qp->qpn & MGM_QPN_MASK) |
(1U << MGM_BLCK_LB_BIT));
else
mgm->qp[members_count++] = cpu_to_be32(qp->qpn & MGM_QPN_MASK);
mgm->members_count = cpu_to_be32(members_count | (u32) prot << 30);
err = mlx4_WRITE_ENTRY(dev, index, mailbox);
if (err)
goto out;
if (!link)
goto out;
err = mlx4_READ_ENTRY(dev, prev, mailbox);
if (err)
goto out;
mgm->next_gid_index = cpu_to_be32(index << 6);
err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
if (err)
goto out;
out:
if (prot == MLX4_PROT_ETH) {
/* manage the steering entry for promisc mode */
if (new_entry)
new_steering_entry(dev, port, steer, index, qp->qpn);
else
existing_steering_entry(dev, port, steer,
index, qp->qpn);
}
if (err && link && index != -1) {
if (index < dev->caps.num_mgms)
mlx4_warn(dev, "Got AMGM index %d < %d",
index, dev->caps.num_mgms);
else
mlx4_bitmap_free(&priv->mcg_table.bitmap,
index - dev->caps.num_mgms);
}
mutex_unlock(&priv->mcg_table.mutex);
mlx4_free_cmd_mailbox(dev, mailbox);
return err;
}
int mlx4_qp_detach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
enum mlx4_protocol prot, enum mlx4_steer_type steer)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_mgm *mgm;
u32 members_count;
int prev, index;
int i, loc;
int err;
u8 port = gid[5];
bool removed_entry = false;
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
mgm = mailbox->buf;
mutex_lock(&priv->mcg_table.mutex);
err = find_entry(dev, port, gid, prot,
mailbox, &prev, &index);
if (err)
goto out;
if (index == -1) {
mlx4_err(dev, "MGID %pI6 not found\n", gid);
err = -EINVAL;
goto out;
}
/* if this pq is also a promisc qp, it shouldn't be removed */
if (prot == MLX4_PROT_ETH &&
check_duplicate_entry(dev, port, steer, index, qp->qpn))
goto out;
members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
for (loc = -1, i = 0; i < members_count; ++i)
if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn)
loc = i;
if (loc == -1) {
mlx4_err(dev, "QP %06x not found in MGM\n", qp->qpn);
err = -EINVAL;
goto out;
}
mgm->members_count = cpu_to_be32(--members_count | (u32) prot << 30);
mgm->qp[loc] = mgm->qp[i - 1];
mgm->qp[i - 1] = 0;
if (prot == MLX4_PROT_ETH)
removed_entry = can_remove_steering_entry(dev, port, steer,
index, qp->qpn);
if (i != 1 && (prot != MLX4_PROT_ETH || !removed_entry)) {
err = mlx4_WRITE_ENTRY(dev, index, mailbox);
goto out;
}
/* We are going to delete the entry, members count should be 0 */
mgm->members_count = cpu_to_be32((u32) prot << 30);
if (prev == -1) {
/* Remove entry from MGM */
int amgm_index = be32_to_cpu(mgm->next_gid_index) >> 6;
if (amgm_index) {
err = mlx4_READ_ENTRY(dev, amgm_index, mailbox);
if (err)
goto out;
} else
memset(mgm->gid, 0, 16);
err = mlx4_WRITE_ENTRY(dev, index, mailbox);
if (err)
goto out;
if (amgm_index) {
if (amgm_index < dev->caps.num_mgms)
mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d",
index, amgm_index, dev->caps.num_mgms);
else
mlx4_bitmap_free(&priv->mcg_table.bitmap,
amgm_index - dev->caps.num_mgms);
}
} else {
/* Remove entry from AMGM */
int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
err = mlx4_READ_ENTRY(dev, prev, mailbox);
if (err)
goto out;
mgm->next_gid_index = cpu_to_be32(cur_next_index << 6);
err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
if (err)
goto out;
if (index < dev->caps.num_mgms)
mlx4_warn(dev, "entry %d had next AMGM index %d < %d",
prev, index, dev->caps.num_mgms);
else
mlx4_bitmap_free(&priv->mcg_table.bitmap,
index - dev->caps.num_mgms);
}
out:
mutex_unlock(&priv->mcg_table.mutex);
mlx4_free_cmd_mailbox(dev, mailbox);
return err;
}
static int mlx4_QP_ATTACH(struct mlx4_dev *dev, struct mlx4_qp *qp,
u8 gid[16], u8 attach, u8 block_loopback,
enum mlx4_protocol prot)
{
struct mlx4_cmd_mailbox *mailbox;
int err = 0;
int qpn;
if (!mlx4_is_mfunc(dev))
return -EBADF;
mailbox = mlx4_alloc_cmd_mailbox(dev);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
memcpy(mailbox->buf, gid, 16);
qpn = qp->qpn;
qpn |= (prot << 28);
if (attach && block_loopback)
qpn |= (1 << 31);
err = mlx4_cmd(dev, mailbox->dma, qpn, attach,
MLX4_CMD_QP_ATTACH, MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_WRAPPED);
mlx4_free_cmd_mailbox(dev, mailbox);
return err;
}
int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
int block_mcast_loopback, enum mlx4_protocol prot)
{
if (prot == MLX4_PROT_ETH &&
!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
return 0;
if (prot == MLX4_PROT_ETH)
gid[7] |= (MLX4_MC_STEER << 1);
if (mlx4_is_mfunc(dev))
return mlx4_QP_ATTACH(dev, qp, gid, 1,
block_mcast_loopback, prot);
return mlx4_qp_attach_common(dev, qp, gid, block_mcast_loopback,
prot, MLX4_MC_STEER);
}
EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
enum mlx4_protocol prot)
{
if (prot == MLX4_PROT_ETH &&
!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
return 0;
if (prot == MLX4_PROT_ETH)
gid[7] |= (MLX4_MC_STEER << 1);
if (mlx4_is_mfunc(dev))
return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
return mlx4_qp_detach_common(dev, qp, gid, prot, MLX4_MC_STEER);
}
EXPORT_SYMBOL_GPL(mlx4_multicast_detach);
int mlx4_unicast_attach(struct mlx4_dev *dev,
struct mlx4_qp *qp, u8 gid[16],
int block_mcast_loopback, enum mlx4_protocol prot)
{
if (prot == MLX4_PROT_ETH &&
!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
return 0;
if (prot == MLX4_PROT_ETH)
gid[7] |= (MLX4_UC_STEER << 1);
if (mlx4_is_mfunc(dev))
return mlx4_QP_ATTACH(dev, qp, gid, 1,
block_mcast_loopback, prot);
return mlx4_qp_attach_common(dev, qp, gid, block_mcast_loopback,
prot, MLX4_UC_STEER);
}
EXPORT_SYMBOL_GPL(mlx4_unicast_attach);
int mlx4_unicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp,
u8 gid[16], enum mlx4_protocol prot)
{
if (prot == MLX4_PROT_ETH &&
!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
return 0;
if (prot == MLX4_PROT_ETH)
gid[7] |= (MLX4_UC_STEER << 1);
if (mlx4_is_mfunc(dev))
return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
return mlx4_qp_detach_common(dev, qp, gid, prot, MLX4_UC_STEER);
}
EXPORT_SYMBOL_GPL(mlx4_unicast_detach);
int mlx4_PROMISC_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd)
{
u32 qpn = (u32) vhcr->in_param & 0xffffffff;
u8 port = vhcr->in_param >> 62;
enum mlx4_steer_type steer = vhcr->in_modifier;
/* Promiscuous unicast is not allowed in mfunc */
if (mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)
return 0;
if (vhcr->op_modifier)
return add_promisc_qp(dev, port, steer, qpn);
else
return remove_promisc_qp(dev, port, steer, qpn);
}
static int mlx4_PROMISC(struct mlx4_dev *dev, u32 qpn,
enum mlx4_steer_type steer, u8 add, u8 port)
{
return mlx4_cmd(dev, (u64) qpn | (u64) port << 62, (u32) steer, add,
MLX4_CMD_PROMISC, MLX4_CMD_TIME_CLASS_A,
MLX4_CMD_WRAPPED);
}
int mlx4_multicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
{
if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
return 0;
if (mlx4_is_mfunc(dev))
return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 1, port);
return add_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
}
EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_add);
int mlx4_multicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
{
if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
return 0;
if (mlx4_is_mfunc(dev))
return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 0, port);
return remove_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
}
EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_remove);
int mlx4_unicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
{
if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
return 0;
if (mlx4_is_mfunc(dev))
return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 1, port);
return add_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
}
EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_add);
int mlx4_unicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
{
if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
return 0;
if (mlx4_is_mfunc(dev))
return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 0, port);
return remove_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
}
EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_remove);
int mlx4_init_mcg_table(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
int err;
err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms,
dev->caps.num_amgms - 1, 0, 0);
if (err)
return err;
mutex_init(&priv->mcg_table.mutex);
return 0;
}
void mlx4_cleanup_mcg_table(struct mlx4_dev *dev)
{
mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap);
}
|