drivers/net/ethernet/mellanox/mlx4/port.c

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/errno.h>
  34 #include <linux/if_ether.h>
  35 #include <linux/if_vlan.h>
  36 #include <linux/export.h>
  37
  38 #include <linux/mlx4/cmd.h>
  39
  40 #include "mlx4.h"
  41 #include "mlx4_stats.h"
  42
  43 #define MLX4_MAC_VALID          (1ull << 63)
  44
  45 #define MLX4_VLAN_VALID         (1u << 31)
  46 #define MLX4_VLAN_MASK          0xfff
  47
  48 #define MLX4_STATS_TRAFFIC_COUNTERS_MASK        0xfULL
  49 #define MLX4_STATS_TRAFFIC_DROPS_MASK           0xc0ULL
  50 #define MLX4_STATS_ERROR_COUNTERS_MASK          0x1ffc30ULL
  51 #define MLX4_STATS_PORT_COUNTERS_MASK           0x1fe00000ULL
  52
  53 #define MLX4_FLAG_V_IGNORE_FCS_MASK             0x2
  54 #define MLX4_IGNORE_FCS_MASK                    0x1
  55
  56 void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
  57 {
  58         int i;
  59
  60         mutex_init(&table->mutex);
  61         for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
  62                 table->entries[i] = 0;
  63                 table->refs[i]   = 0;
  64                 table->is_dup[i] = false;
  65         }
  66         table->max   = 1 << dev->caps.log_num_macs;
  67         table->total = 0;
  68 }
  69
  70 void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
  71 {
  72         int i;
  73
  74         mutex_init(&table->mutex);
  75         for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
  76                 table->entries[i] = 0;
  77                 table->refs[i]   = 0;
  78                 table->is_dup[i] = false;
  79         }
  80         table->max   = (1 << dev->caps.log_num_vlans) - MLX4_VLAN_REGULAR;
  81         table->total = 0;
  82 }
  83
  84 void mlx4_init_roce_gid_table(struct mlx4_dev *dev,
  85                               struct mlx4_roce_gid_table *table)
  86 {
  87         int i;
  88
  89         mutex_init(&table->mutex);
  90         for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++)
  91                 memset(table->roce_gids[i].raw, 0, MLX4_ROCE_GID_ENTRY_SIZE);
  92 }
  93
  94 static int validate_index(struct mlx4_dev *dev,
  95                           struct mlx4_mac_table *table, int index)
  96 {
  97         int err = 0;
  98
  99         if (index < 0 || index >= table->max || !table->entries[index]) {
 100                 mlx4_warn(dev, "No valid Mac entry for the given index\n");
 101                 err = -EINVAL;
 102         }
 103         return err;
 104 }
 105
 106 static int find_index(struct mlx4_dev *dev,
 107                       struct mlx4_mac_table *table, u64 mac)
 108 {
 109         int i;
 110
 111         for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
 112                 if (table->refs[i] &&
 113                     (MLX4_MAC_MASK & mac) ==
 114                     (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
 115                         return i;
 116         }
 117         /* Mac not found */
 118         return -EINVAL;
 119 }
 120
 121 static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
 122                                    __be64 *entries)
 123 {
 124         struct mlx4_cmd_mailbox *mailbox;
 125         u32 in_mod;
 126         int err;
 127
 128         mailbox = mlx4_alloc_cmd_mailbox(dev);
 129         if (IS_ERR(mailbox))
 130                 return PTR_ERR(mailbox);
 131
 132         memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
 133
 134         in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
 135
 136         err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
 137                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 138                        MLX4_CMD_NATIVE);
 139
 140         mlx4_free_cmd_mailbox(dev, mailbox);
 141         return err;
 142 }
 143
 144 int mlx4_find_cached_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *idx)
 145 {
 146         struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
 147         struct mlx4_mac_table *table = &info->mac_table;
 148         int i;
 149
 150         for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
 151                 if (!table->refs[i])
 152                         continue;
 153
 154                 if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
 155                         *idx = i;
 156                         return 0;
 157                 }
 158         }
 159
 160         return -ENOENT;
 161 }
 162 EXPORT_SYMBOL_GPL(mlx4_find_cached_mac);
 163
 164 static bool mlx4_need_mf_bond(struct mlx4_dev *dev)
 165 {
 166         int i, num_eth_ports = 0;
 167
 168         if (!mlx4_is_mfunc(dev))
 169                 return false;
 170         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
 171                 ++num_eth_ports;
 172
 173         return (num_eth_ports ==  2) ? true : false;
 174 }
 175
 176 int __mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
 177 {
 178         struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
 179         struct mlx4_mac_table *table = &info->mac_table;
 180         int i, err = 0;
 181         int free = -1;
 182         int free_for_dup = -1;
 183         bool dup = mlx4_is_mf_bonded(dev);
 184         u8 dup_port = (port == 1) ? 2 : 1;
 185         struct mlx4_mac_table *dup_table = &mlx4_priv(dev)->port[dup_port].mac_table;
 186         bool need_mf_bond = mlx4_need_mf_bond(dev);
 187         bool can_mf_bond = true;
 188
 189         mlx4_dbg(dev, "Registering MAC: 0x%llx for port %d %s duplicate\n",
 190                  (unsigned long long)mac, port,
 191                  dup ? "with" : "without");
 192
 193         if (need_mf_bond) {
 194                 if (port == 1) {
 195                         mutex_lock(&table->mutex);
 196                         mutex_lock(&dup_table->mutex);
 197                 } else {
 198                         mutex_lock(&dup_table->mutex);
 199                         mutex_lock(&table->mutex);
 200                 }
 201         } else {
 202                 mutex_lock(&table->mutex);
 203         }
 204
 205         if (need_mf_bond) {
 206                 int index_at_port = -1;
 207                 int index_at_dup_port = -1;
 208
 209                 for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
 210                         if (((MLX4_MAC_MASK & mac) == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))))
 211                                 index_at_port = i;
 212                         if (((MLX4_MAC_MASK & mac) == (MLX4_MAC_MASK & be64_to_cpu(dup_table->entries[i]))))
 213                                 index_at_dup_port = i;
 214                 }
 215
 216                 /* check that same mac is not in the tables at different indices */
 217                 if ((index_at_port != index_at_dup_port) &&
 218                     (index_at_port >= 0) &&
 219                     (index_at_dup_port >= 0))
 220                         can_mf_bond = false;
 221
 222                 /* If the mac is already in the primary table, the slot must be
 223                  * available in the duplicate table as well.
 224                  */
 225                 if (index_at_port >= 0 && index_at_dup_port < 0 &&
 226                     dup_table->refs[index_at_port]) {
 227                         can_mf_bond = false;
 228                 }
 229                 /* If the mac is already in the duplicate table, check that the
 230                  * corresponding index is not occupied in the primary table, or
 231                  * the primary table already contains the mac at the same index.
 232                  * Otherwise, you cannot bond (primary contains a different mac
 233                  * at that index).
 234                  */
 235                 if (index_at_dup_port >= 0) {
 236                         if (!table->refs[index_at_dup_port] ||
 237                             ((MLX4_MAC_MASK & mac) == (MLX4_MAC_MASK & be64_to_cpu(table->entries[index_at_dup_port]))))
 238                                 free_for_dup = index_at_dup_port;
 239                         else
 240                                 can_mf_bond = false;
 241                 }
 242         }
 243
 244         for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
 245                 if (!table->refs[i]) {
 246                         if (free < 0)
 247                                 free = i;
 248                         if (free_for_dup < 0 && need_mf_bond && can_mf_bond) {
 249                                 if (!dup_table->refs[i])
 250                                         free_for_dup = i;
 251                         }
 252                         continue;
 253                 }
 254
 255                 if ((MLX4_MAC_MASK & mac) ==
 256                      (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
 257                         /* MAC already registered, increment ref count */
 258                         err = i;
 259                         ++table->refs[i];
 260                         if (dup) {
 261                                 u64 dup_mac = MLX4_MAC_MASK & be64_to_cpu(dup_table->entries[i]);
 262
 263                                 if (dup_mac != mac || !dup_table->is_dup[i]) {
 264                                         mlx4_warn(dev, "register mac: expect duplicate mac 0x%llx on port %d index %d\n",
 265                                                   mac, dup_port, i);
 266                                 }
 267                         }
 268                         goto out;
 269                 }
 270         }
 271
 272         if (need_mf_bond && (free_for_dup < 0)) {
 273                 if (dup) {
 274                         mlx4_warn(dev, "Fail to allocate duplicate MAC table entry\n");
 275                         mlx4_warn(dev, "High Availability for virtual functions may not work as expected\n");
 276                         dup = false;
 277                 }
 278                 can_mf_bond = false;
 279         }
 280
 281         if (need_mf_bond && can_mf_bond)
 282                 free = free_for_dup;
 283
 284         mlx4_dbg(dev, "Free MAC index is %d\n", free);
 285
 286         if (table->total == table->max) {
 287                 /* No free mac entries */
 288                 err = -ENOSPC;
 289                 goto out;
 290         }
 291
 292         /* Register new MAC */
 293         table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
 294
 295         err = mlx4_set_port_mac_table(dev, port, table->entries);
 296         if (unlikely(err)) {
 297                 mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
 298                          (unsigned long long) mac);
 299                 table->entries[free] = 0;
 300                 goto out;
 301         }
 302         table->refs[free] = 1;
 303         table->is_dup[free] = false;
 304         ++table->total;
 305         if (dup) {
 306                 dup_table->refs[free] = 0;
 307                 dup_table->is_dup[free] = true;
 308                 dup_table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
 309
 310                 err = mlx4_set_port_mac_table(dev, dup_port, dup_table->entries);
 311                 if (unlikely(err)) {
 312                         mlx4_warn(dev, "Failed adding duplicate mac: 0x%llx\n", mac);
 313                         dup_table->is_dup[free] = false;
 314                         dup_table->entries[free] = 0;
 315                         goto out;
 316                 }
 317                 ++dup_table->total;
 318         }
 319         err = free;
 320 out:
 321         if (need_mf_bond) {
 322                 if (port == 2) {
 323                         mutex_unlock(&table->mutex);
 324                         mutex_unlock(&dup_table->mutex);
 325                 } else {
 326                         mutex_unlock(&dup_table->mutex);
 327                         mutex_unlock(&table->mutex);
 328                 }
 329         } else {
 330                 mutex_unlock(&table->mutex);
 331         }
 332         return err;
 333 }
 334 EXPORT_SYMBOL_GPL(__mlx4_register_mac);
 335
 336 int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
 337 {
 338         u64 out_param = 0;
 339         int err = -EINVAL;
 340
 341         if (mlx4_is_mfunc(dev)) {
 342                 if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
 343                         err = mlx4_cmd_imm(dev, mac, &out_param,
 344                                            ((u32) port) << 8 | (u32) RES_MAC,
 345                                            RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
 346                                            MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
 347                 }
 348                 if (err && err == -EINVAL && mlx4_is_slave(dev)) {
 349                         /* retry using old REG_MAC format */
 350                         set_param_l(&out_param, port);
 351                         err = mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
 352                                            RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
 353                                            MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
 354                         if (!err)
 355                                 dev->flags |= MLX4_FLAG_OLD_REG_MAC;
 356                 }
 357                 if (err)
 358                         return err;
 359
 360                 return get_param_l(&out_param);
 361         }
 362         return __mlx4_register_mac(dev, port, mac);
 363 }
 364 EXPORT_SYMBOL_GPL(mlx4_register_mac);
 365
 366 int mlx4_get_base_qpn(struct mlx4_dev *dev, u8 port)
 367 {
 368         return dev->caps.reserved_qps_base[MLX4_QP_REGION_ETH_ADDR] +
 369                         (port - 1) * (1 << dev->caps.log_num_macs);
 370 }
 371 EXPORT_SYMBOL_GPL(mlx4_get_base_qpn);
 372
 373 void __mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
 374 {
 375         struct mlx4_port_info *info;
 376         struct mlx4_mac_table *table;
 377         int index;
 378         bool dup = mlx4_is_mf_bonded(dev);
 379         u8 dup_port = (port == 1) ? 2 : 1;
 380         struct mlx4_mac_table *dup_table = &mlx4_priv(dev)->port[dup_port].mac_table;
 381
 382         if (port < 1 || port > dev->caps.num_ports) {
 383                 mlx4_warn(dev, "invalid port number (%d), aborting...\n", port);
 384                 return;
 385         }
 386         info = &mlx4_priv(dev)->port[port];
 387         table = &info->mac_table;
 388
 389         if (dup) {
 390                 if (port == 1) {
 391                         mutex_lock(&table->mutex);
 392                         mutex_lock(&dup_table->mutex);
 393                 } else {
 394                         mutex_lock(&dup_table->mutex);
 395                         mutex_lock(&table->mutex);
 396                 }
 397         } else {
 398                 mutex_lock(&table->mutex);
 399         }
 400
 401         index = find_index(dev, table, mac);
 402
 403         if (validate_index(dev, table, index))
 404                 goto out;
 405
 406         if (--table->refs[index] || table->is_dup[index]) {
 407                 mlx4_dbg(dev, "Have more references for index %d, no need to modify mac table\n",
 408                          index);
 409                 if (!table->refs[index])
 410                         dup_table->is_dup[index] = false;
 411                 goto out;
 412         }
 413
 414         table->entries[index] = 0;
 415         if (mlx4_set_port_mac_table(dev, port, table->entries))
 416                 mlx4_warn(dev, "Fail to set mac in port %d during unregister\n", port);
 417         --table->total;
 418
 419         if (dup) {
 420                 dup_table->is_dup[index] = false;
 421                 if (dup_table->refs[index])
 422                         goto out;
 423                 dup_table->entries[index] = 0;
 424                 if (mlx4_set_port_mac_table(dev, dup_port, dup_table->entries))
 425                         mlx4_warn(dev, "Fail to set mac in duplicate port %d during unregister\n", dup_port);
 426
 427                 --table->total;
 428         }
 429 out:
 430         if (dup) {
 431                 if (port == 2) {
 432                         mutex_unlock(&table->mutex);
 433                         mutex_unlock(&dup_table->mutex);
 434                 } else {
 435                         mutex_unlock(&dup_table->mutex);
 436                         mutex_unlock(&table->mutex);
 437                 }
 438         } else {
 439                 mutex_unlock(&table->mutex);
 440         }
 441 }
 442 EXPORT_SYMBOL_GPL(__mlx4_unregister_mac);
 443
 444 void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
 445 {
 446         u64 out_param = 0;
 447
 448         if (mlx4_is_mfunc(dev)) {
 449                 if (!(dev->flags & MLX4_FLAG_OLD_REG_MAC)) {
 450                         (void) mlx4_cmd_imm(dev, mac, &out_param,
 451                                             ((u32) port) << 8 | (u32) RES_MAC,
 452                                             RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
 453                                             MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
 454                 } else {
 455                         /* use old unregister mac format */
 456                         set_param_l(&out_param, port);
 457                         (void) mlx4_cmd_imm(dev, mac, &out_param, RES_MAC,
 458                                             RES_OP_RESERVE_AND_MAP, MLX4_CMD_FREE_RES,
 459                                             MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
 460                 }
 461                 return;
 462         }
 463         __mlx4_unregister_mac(dev, port, mac);
 464         return;
 465 }
 466 EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
 467
 468 int __mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac)
 469 {
 470         struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
 471         struct mlx4_mac_table *table = &info->mac_table;
 472         int index = qpn - info->base_qpn;
 473         int err = 0;
 474         bool dup = mlx4_is_mf_bonded(dev);
 475         u8 dup_port = (port == 1) ? 2 : 1;
 476         struct mlx4_mac_table *dup_table = &mlx4_priv(dev)->port[dup_port].mac_table;
 477
 478         /* CX1 doesn't support multi-functions */
 479         if (dup) {
 480                 if (port == 1) {
 481                         mutex_lock(&table->mutex);
 482                         mutex_lock(&dup_table->mutex);
 483                 } else {
 484                         mutex_lock(&dup_table->mutex);
 485                         mutex_lock(&table->mutex);
 486                 }
 487         } else {
 488                 mutex_lock(&table->mutex);
 489         }
 490
 491         err = validate_index(dev, table, index);
 492         if (err)
 493                 goto out;
 494
 495         table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
 496
 497         err = mlx4_set_port_mac_table(dev, port, table->entries);
 498         if (unlikely(err)) {
 499                 mlx4_err(dev, "Failed adding MAC: 0x%llx\n",
 500                          (unsigned long long) new_mac);
 501                 table->entries[index] = 0;
 502         } else {
 503                 if (dup) {
 504                         dup_table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);
 505
 506                         err = mlx4_set_port_mac_table(dev, dup_port, dup_table->entries);
 507                         if (unlikely(err)) {
 508                                 mlx4_err(dev, "Failed adding duplicate MAC: 0x%llx\n",
 509                                          (unsigned long long)new_mac);
 510                                 dup_table->entries[index] = 0;
 511                         }
 512                 }
 513         }
 514 out:
 515         if (dup) {
 516                 if (port == 2) {
 517                         mutex_unlock(&table->mutex);
 518                         mutex_unlock(&dup_table->mutex);
 519                 } else {
 520                         mutex_unlock(&dup_table->mutex);
 521                         mutex_unlock(&table->mutex);
 522                 }
 523         } else {
 524                 mutex_unlock(&table->mutex);
 525         }
 526         return err;
 527 }
 528 EXPORT_SYMBOL_GPL(__mlx4_replace_mac);
 529
 530 static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
 531                                     __be32 *entries)
 532 {
 533         struct mlx4_cmd_mailbox *mailbox;
 534         u32 in_mod;
 535         int err;
 536
 537         mailbox = mlx4_alloc_cmd_mailbox(dev);
 538         if (IS_ERR(mailbox))
 539                 return PTR_ERR(mailbox);
 540
 541         memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
 542         in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
 543         err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
 544                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
 545                        MLX4_CMD_NATIVE);
 546
 547         mlx4_free_cmd_mailbox(dev, mailbox);
 548
 549         return err;
 550 }
 551
 552 int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx)
 553 {
 554         struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
 555         int i;
 556
 557         for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
 558                 if (table->refs[i] &&
 559                     (vid == (MLX4_VLAN_MASK &
 560                               be32_to_cpu(table->entries[i])))) {
 561                         /* VLAN already registered, increase reference count */
 562                         *idx = i;
 563                         return 0;
 564                 }
 565         }
 566
 567         return -ENOENT;
 568 }
 569 EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
 570
 571 int __mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan,
 572                                 int *index)
 573 {
 574         struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
 575         int i, err = 0;
 576         int free = -1;
 577         int free_for_dup = -1;
 578         bool dup = mlx4_is_mf_bonded(dev);
 579         u8 dup_port = (port == 1) ? 2 : 1;
 580         struct mlx4_vlan_table *dup_table = &mlx4_priv(dev)->port[dup_port].vlan_table;
 581         bool need_mf_bond = mlx4_need_mf_bond(dev);
 582         bool can_mf_bond = true;
 583
 584         mlx4_dbg(dev, "Registering VLAN: %d for port %d %s duplicate\n",
 585                  vlan, port,
 586                  dup ? "with" : "without");
 587
 588         if (need_mf_bond) {
 589                 if (port == 1) {
 590                         mutex_lock(&table->mutex);
 591                         mutex_lock(&dup_table->mutex);
 592                 } else {
 593                         mutex_lock(&dup_table->mutex);
 594                         mutex_lock(&table->mutex);
 595                 }
 596         } else {
 597                 mutex_lock(&table->mutex);
 598         }
 599
 600         if (table->total == table->max) {
 601                 /* No free vlan entries */
 602                 err = -ENOSPC;
 603                 goto out;
 604         }
 605
 606         if (need_mf_bond) {
 607                 int index_at_port = -1;
 608                 int index_at_dup_port = -1;
 609
 610                 for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
 611                         if ((vlan == (MLX4_VLAN_MASK & be32_to_cpu(table->entries[i]))))
 612                                 index_at_port = i;
 613                         if ((vlan == (MLX4_VLAN_MASK & be32_to_cpu(dup_table->entries[i]))))
 614                                 index_at_dup_port = i;
 615                 }
 616                 /* check that same vlan is not in the tables at different indices */
 617                 if ((index_at_port != index_at_dup_port) &&
 618                     (index_at_port >= 0) &&
 619                     (index_at_dup_port >= 0))
 620                         can_mf_bond = false;
 621
 622                 /* If the vlan is already in the primary table, the slot must be
 623                  * available in the duplicate table as well.
 624                  */
 625                 if (index_at_port >= 0 && index_at_dup_port < 0 &&
 626                     dup_table->refs[index_at_port]) {
 627                         can_mf_bond = false;
 628                 }
 629                 /* If the vlan is already in the duplicate table, check that the
 630                  * corresponding index is not occupied in the primary table, or
 631                  * the primary table already contains the vlan at the same index.
 632                  * Otherwise, you cannot bond (primary contains a different vlan
 633                  * at that index).
 634                  */
 635                 if (index_at_dup_port >= 0) {
 636                         if (!table->refs[index_at_dup_port] ||
 637                             (vlan == (MLX4_VLAN_MASK & be32_to_cpu(dup_table->entries[index_at_dup_port]))))
 638                                 free_for_dup = index_at_dup_port;
 639                         else
 640                                 can_mf_bond = false;
 641                 }
 642         }
 643
 644         for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
 645                 if (!table->refs[i]) {
 646                         if (free < 0)
 647                                 free = i;
 648                         if (free_for_dup < 0 && need_mf_bond && can_mf_bond) {
 649                                 if (!dup_table->refs[i])
 650                                         free_for_dup = i;
 651                         }
 652                 }
 653
 654                 if ((table->refs[i] || table->is_dup[i]) &&
 655                     (vlan == (MLX4_VLAN_MASK &
 656                               be32_to_cpu(table->entries[i])))) {
 657                         /* Vlan already registered, increase references count */
 658                         mlx4_dbg(dev, "vlan %u is already registered.\n", vlan);
 659                         *index = i;
 660                         ++table->refs[i];
 661                         if (dup) {
 662                                 u16 dup_vlan = MLX4_VLAN_MASK & be32_to_cpu(dup_table->entries[i]);
 663
 664                                 if (dup_vlan != vlan || !dup_table->is_dup[i]) {
 665                                         mlx4_warn(dev, "register vlan: expected duplicate vlan %u on port %d index %d\n",
 666                                                   vlan, dup_port, i);
 667                                 }
 668                         }
 669                         goto out;
 670                 }
 671         }
 672
 673         if (need_mf_bond && (free_for_dup < 0)) {
 674                 if (dup) {
 675                         mlx4_warn(dev, "Fail to allocate duplicate VLAN table entry\n");
 676                         mlx4_warn(dev, "High Availability for virtual functions may not work as expected\n");
 677                         dup = false;
 678                 }
 679                 can_mf_bond = false;
 680         }
 681
 682         if (need_mf_bond && can_mf_bond)
 683                 free = free_for_dup;
 684
 685         if (free < 0) {
 686                 err = -ENOMEM;
 687                 goto out;
 688         }
 689
 690         /* Register new VLAN */
 691         table->refs[free] = 1;
 692         table->is_dup[free] = false;
 693         table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
 694
 695         err = mlx4_set_port_vlan_table(dev, port, table->entries);
 696         if (unlikely(err)) {
 697                 mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
 698                 table->refs[free] = 0;
 699                 table->entries[free] = 0;
 700                 goto out;
 701         }
 702         ++table->total;
 703         if (dup) {
 704                 dup_table->refs[free] = 0;
 705                 dup_table->is_dup[free] = true;
 706                 dup_table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
 707
 708                 err = mlx4_set_port_vlan_table(dev, dup_port, dup_table->entries);
 709                 if (unlikely(err)) {
 710                         mlx4_warn(dev, "Failed adding duplicate vlan: %u\n", vlan);
 711                         dup_table->is_dup[free] = false;
 712                         dup_table->entries[free] = 0;
 713                         goto out;
 714                 }
 715                 ++dup_table->total;
 716         }
 717
 718         *index = free;
 719 out:
 720         if (need_mf_bond) {
 721                 if (port == 2) {
 722                         mutex_unlock(&table->mutex);
 723                         mutex_unlock(&dup_table->mutex);
 724                 } else {
 725                         mutex_unlock(&dup_table->mutex);
 726                         mutex_unlock(&table->mutex);
 727                 }
 728         } else {
 729                 mutex_unlock(&table->mutex);
 730         }
 731         return err;
 732 }
 733
 734 int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
 735 {
 736         u64 out_param = 0;
 737         int err;
 738
 739         if (vlan > 4095)
 740                 return -EINVAL;
 741
 742         if (mlx4_is_mfunc(dev)) {
 743                 err = mlx4_cmd_imm(dev, vlan, &out_param,
 744                                    ((u32) port) << 8 | (u32) RES_VLAN,
 745                                    RES_OP_RESERVE_AND_MAP, MLX4_CMD_ALLOC_RES,
 746                                    MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
 747                 if (!err)
 748                         *index = get_param_l(&out_param);
 749
 750                 return err;
 751         }
 752         return __mlx4_register_vlan(dev, port, vlan, index);
 753 }
 754 EXPORT_SYMBOL_GPL(mlx4_register_vlan);
 755
 756 void __mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
 757 {
 758         struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
 759         int index;
 760         bool dup = mlx4_is_mf_bonded(dev);
 761         u8 dup_port = (port == 1) ? 2 : 1;
 762         struct mlx4_vlan_table *dup_table = &mlx4_priv(dev)->port[dup_port].vlan_table;
 763
 764         if (dup) {
 765                 if (port == 1) {
 766                         mutex_lock(&table->mutex);
 767                         mutex_lock(&dup_table->mutex);
 768                 } else {
 769                         mutex_lock(&dup_table->mutex);
 770                         mutex_lock(&table->mutex);
 771                 }
 772         } else {
 773                 mutex_lock(&table->mutex);
 774         }
 775
 776         if (mlx4_find_cached_vlan(dev, port, vlan, &index)) {
 777                 mlx4_warn(dev, "vlan 0x%x is not in the vlan table\n", vlan);
 778                 goto out;
 779         }
 780
 781         if (index < MLX4_VLAN_REGULAR) {
 782                 mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
 783                 goto out;
 784         }
 785
 786         if (--table->refs[index] || table->is_dup[index]) {
 787                 mlx4_dbg(dev, "Have %d more references for index %d, no need to modify vlan table\n",
 788                          table->refs[index], index);
 789                 if (!table->refs[index])
 790                         dup_table->is_dup[index] = false;
 791                 goto out;
 792         }
 793         table->entries[index] = 0;
 794         if (mlx4_set_port_vlan_table(dev, port, table->entries))
 795                 mlx4_warn(dev, "Fail to set vlan in port %d during unregister\n", port);
 796         --table->total;
 797         if (dup) {
 798                 dup_table->is_dup[index] = false;
 799                 if (dup_table->refs[index])
 800                         goto out;
 801                 dup_table->entries[index] = 0;
 802                 if (mlx4_set_port_vlan_table(dev, dup_port, dup_table->entries))
 803                         mlx4_warn(dev, "Fail to set vlan in duplicate port %d during unregister\n", dup_port);
 804                 --dup_table->total;
 805         }
 806 out:
 807         if (dup) {
 808                 if (port == 2) {
 809                         mutex_unlock(&table->mutex);
 810                         mutex_unlock(&dup_table->mutex);
 811                 } else {
 812                         mutex_unlock(&dup_table->mutex);
 813                         mutex_unlock(&table->mutex);
 814                 }
 815         } else {
 816                 mutex_unlock(&table->mutex);
 817         }
 818 }
 819
 820 void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan)
 821 {
 822         u64 out_param = 0;
 823
 824         if (mlx4_is_mfunc(dev)) {
 825                 (void) mlx4_cmd_imm(dev, vlan, &out_param,
 826                                     ((u32) port) << 8 | (u32) RES_VLAN,
 827                                     RES_OP_RESERVE_AND_MAP,
 828                                     MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
 829                                     MLX4_CMD_WRAPPED);
 830                 return;
 831         }
 832         __mlx4_unregister_vlan(dev, port, vlan);
 833 }
 834 EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
 835
 836 int mlx4_bond_mac_table(struct mlx4_dev *dev)
 837 {
 838         struct mlx4_mac_table *t1 = &mlx4_priv(dev)->port[1].mac_table;
 839         struct mlx4_mac_table *t2 = &mlx4_priv(dev)->port[2].mac_table;
 840         int ret = 0;
 841         int i;
 842         bool update1 = false;
 843         bool update2 = false;
 844
 845         mutex_lock(&t1->mutex);
 846         mutex_lock(&t2->mutex);
 847         for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
 848                 if ((t1->entries[i] != t2->entries[i]) &&
 849                     t1->entries[i] && t2->entries[i]) {
 850                         mlx4_warn(dev, "can't duplicate entry %d in mac table\n", i);
 851                         ret = -EINVAL;
 852                         goto unlock;
 853                 }
 854         }
 855
 856         for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
 857                 if (t1->entries[i] && !t2->entries[i]) {
 858                         t2->entries[i] = t1->entries[i];
 859                         t2->is_dup[i] = true;
 860                         update2 = true;
 861                 } else if (!t1->entries[i] && t2->entries[i]) {
 862                         t1->entries[i] = t2->entries[i];
 863                         t1->is_dup[i] = true;
 864                         update1 = true;
 865                 } else if (t1->entries[i] && t2->entries[i]) {
 866                         t1->is_dup[i] = true;
 867                         t2->is_dup[i] = true;
 868                 }
 869         }
 870
 871         if (update1) {
 872                 ret = mlx4_set_port_mac_table(dev, 1, t1->entries);
 873                 if (ret)
 874                         mlx4_warn(dev, "failed to set MAC table for port 1 (%d)\n", ret);
 875         }
 876         if (!ret && update2) {
 877                 ret = mlx4_set_port_mac_table(dev, 2, t2->entries);
 878                 if (ret)
 879                         mlx4_warn(dev, "failed to set MAC table for port 2 (%d)\n", ret);
 880         }
 881
 882         if (ret)
 883                 mlx4_warn(dev, "failed to create mirror MAC tables\n");
 884 unlock:
 885         mutex_unlock(&t2->mutex);
 886         mutex_unlock(&t1->mutex);
 887         return ret;
 888 }
 889
 890 int mlx4_unbond_mac_table(struct mlx4_dev *dev)
 891 {
 892         struct mlx4_mac_table *t1 = &mlx4_priv(dev)->port[1].mac_table;
 893         struct mlx4_mac_table *t2 = &mlx4_priv(dev)->port[2].mac_table;
 894         int ret = 0;
 895         int ret1;
 896         int i;
 897         bool update1 = false;
 898         bool update2 = false;
 899
 900         mutex_lock(&t1->mutex);
 901         mutex_lock(&t2->mutex);
 902         for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
 903                 if (t1->entries[i] != t2->entries[i]) {
 904                         mlx4_warn(dev, "mac table is in an unexpected state when trying to unbond\n");
 905                         ret = -EINVAL;
 906                         goto unlock;
 907                 }
 908         }
 909
 910         for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
 911                 if (!t1->entries[i])
 912                         continue;
 913                 t1->is_dup[i] = false;
 914                 if (!t1->refs[i]) {
 915                         t1->entries[i] = 0;
 916                         update1 = true;
 917                 }
 918                 t2->is_dup[i] = false;
 919                 if (!t2->refs[i]) {
 920                         t2->entries[i] = 0;
 921                         update2 = true;
 922                 }
 923         }
 924
 925         if (update1) {
 926                 ret = mlx4_set_port_mac_table(dev, 1, t1->entries);
 927                 if (ret)
 928                         mlx4_warn(dev, "failed to unmirror MAC tables for port 1(%d)\n", ret);
 929         }
 930         if (update2) {
 931                 ret1 = mlx4_set_port_mac_table(dev, 2, t2->entries);
 932                 if (ret1) {
 933                         mlx4_warn(dev, "failed to unmirror MAC tables for port 2(%d)\n", ret1);
 934                         ret = ret1;
 935                 }
 936         }
 937 unlock:
 938         mutex_unlock(&t2->mutex);
 939         mutex_unlock(&t1->mutex);
 940         return ret;
 941 }
 942
 943 int mlx4_bond_vlan_table(struct mlx4_dev *dev)
 944 {
 945         struct mlx4_vlan_table *t1 = &mlx4_priv(dev)->port[1].vlan_table;
 946         struct mlx4_vlan_table *t2 = &mlx4_priv(dev)->port[2].vlan_table;
 947         int ret = 0;
 948         int i;
 949         bool update1 = false;
 950         bool update2 = false;
 951
 952         mutex_lock(&t1->mutex);
 953         mutex_lock(&t2->mutex);
 954         for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
 955                 if ((t1->entries[i] != t2->entries[i]) &&
 956                     t1->entries[i] && t2->entries[i]) {
 957                         mlx4_warn(dev, "can't duplicate entry %d in vlan table\n", i);
 958                         ret = -EINVAL;
 959                         goto unlock;
 960                 }
 961         }
 962
 963         for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
 964                 if (t1->entries[i] && !t2->entries[i]) {
 965                         t2->entries[i] = t1->entries[i];
 966                         t2->is_dup[i] = true;
 967                         update2 = true;
 968                 } else if (!t1->entries[i] && t2->entries[i]) {
 969                         t1->entries[i] = t2->entries[i];
 970                         t1->is_dup[i] = true;
 971                         update1 = true;
 972                 } else if (t1->entries[i] && t2->entries[i]) {
 973                         t1->is_dup[i] = true;
 974                         t2->is_dup[i] = true;
 975                 }
 976         }
 977
 978         if (update1) {
 979                 ret = mlx4_set_port_vlan_table(dev, 1, t1->entries);
 980                 if (ret)
 981                         mlx4_warn(dev, "failed to set VLAN table for port 1 (%d)\n", ret);
 982         }
 983         if (!ret && update2) {
 984                 ret = mlx4_set_port_vlan_table(dev, 2, t2->entries);
 985                 if (ret)
 986                         mlx4_warn(dev, "failed to set VLAN table for port 2 (%d)\n", ret);
 987         }
 988
 989         if (ret)
 990                 mlx4_warn(dev, "failed to create mirror VLAN tables\n");
 991 unlock:
 992         mutex_unlock(&t2->mutex);
 993         mutex_unlock(&t1->mutex);
 994         return ret;
 995 }
 996
 997 int mlx4_unbond_vlan_table(struct mlx4_dev *dev)
 998 {
 999         struct mlx4_vlan_table *t1 = &mlx4_priv(dev)->port[1].vlan_table;
1000         struct mlx4_vlan_table *t2 = &mlx4_priv(dev)->port[2].vlan_table;
1001         int ret = 0;
1002         int ret1;
1003         int i;
1004         bool update1 = false;
1005         bool update2 = false;
1006
1007         mutex_lock(&t1->mutex);
1008         mutex_lock(&t2->mutex);
1009         for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
1010                 if (t1->entries[i] != t2->entries[i]) {
1011                         mlx4_warn(dev, "vlan table is in an unexpected state when trying to unbond\n");
1012                         ret = -EINVAL;
1013                         goto unlock;
1014                 }
1015         }
1016
1017         for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
1018                 if (!t1->entries[i])
1019                         continue;
1020                 t1->is_dup[i] = false;
1021                 if (!t1->refs[i]) {
1022                         t1->entries[i] = 0;
1023                         update1 = true;
1024                 }
1025                 t2->is_dup[i] = false;
1026                 if (!t2->refs[i]) {
1027                         t2->entries[i] = 0;
1028                         update2 = true;
1029                 }
1030         }
1031
1032         if (update1) {
1033                 ret = mlx4_set_port_vlan_table(dev, 1, t1->entries);
1034                 if (ret)
1035                         mlx4_warn(dev, "failed to unmirror VLAN tables for port 1(%d)\n", ret);
1036         }
1037         if (update2) {
1038                 ret1 = mlx4_set_port_vlan_table(dev, 2, t2->entries);
1039                 if (ret1) {
1040                         mlx4_warn(dev, "failed to unmirror VLAN tables for port 2(%d)\n", ret1);
1041                         ret = ret1;
1042                 }
1043         }
1044 unlock:
1045         mutex_unlock(&t2->mutex);
1046         mutex_unlock(&t1->mutex);
1047         return ret;
1048 }
1049
1050 int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps)
1051 {
1052         struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
1053         u8 *inbuf, *outbuf;
1054         int err;
1055
1056         inmailbox = mlx4_alloc_cmd_mailbox(dev);
1057         if (IS_ERR(inmailbox))
1058                 return PTR_ERR(inmailbox);
1059
1060         outmailbox = mlx4_alloc_cmd_mailbox(dev);
1061         if (IS_ERR(outmailbox)) {
1062                 mlx4_free_cmd_mailbox(dev, inmailbox);
1063                 return PTR_ERR(outmailbox);
1064         }
1065
1066         inbuf = inmailbox->buf;
1067         outbuf = outmailbox->buf;
1068         inbuf[0] = 1;
1069         inbuf[1] = 1;
1070         inbuf[2] = 1;
1071         inbuf[3] = 1;
1072         *(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015);
1073         *(__be32 *) (&inbuf[20]) = cpu_to_be32(port);
1074
1075         err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
1076                            MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
1077                            MLX4_CMD_NATIVE);
1078         if (!err)
1079                 *caps = *(__be32 *) (outbuf + 84);
1080         mlx4_free_cmd_mailbox(dev, inmailbox);
1081         mlx4_free_cmd_mailbox(dev, outmailbox);
1082         return err;
1083 }
1084 static struct mlx4_roce_gid_entry zgid_entry;
1085
1086 int mlx4_get_slave_num_gids(struct mlx4_dev *dev, int slave, int port)
1087 {
1088         int vfs;
1089         int slave_gid = slave;
1090         unsigned i;
1091         struct mlx4_slaves_pport slaves_pport;
1092         struct mlx4_active_ports actv_ports;
1093         unsigned max_port_p_one;
1094
1095         if (slave == 0)
1096                 return MLX4_ROCE_PF_GIDS;
1097
1098         /* Slave is a VF */
1099         slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1100         actv_ports = mlx4_get_active_ports(dev, slave);
1101         max_port_p_one = find_first_bit(actv_ports.ports, dev->caps.num_ports) +
1102                 bitmap_weight(actv_ports.ports, dev->caps.num_ports) + 1;
1103
1104         for (i = 1; i < max_port_p_one; i++) {
1105                 struct mlx4_active_ports exclusive_ports;
1106                 struct mlx4_slaves_pport slaves_pport_actv;
1107                 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1108                 set_bit(i - 1, exclusive_ports.ports);
1109                 if (i == port)
1110                         continue;
1111                 slaves_pport_actv = mlx4_phys_to_slaves_pport_actv(
1112                                     dev, &exclusive_ports);
1113                 slave_gid -= bitmap_weight(slaves_pport_actv.slaves,
1114                                            dev->persist->num_vfs + 1);
1115         }
1116         vfs = bitmap_weight(slaves_pport.slaves, dev->persist->num_vfs + 1) - 1;
1117         if (slave_gid <= ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) % vfs))
1118                 return ((MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / vfs) + 1;
1119         return (MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS) / vfs;
1120 }
1121
1122 int mlx4_get_base_gid_ix(struct mlx4_dev *dev, int slave, int port)
1123 {
1124         int gids;
1125         unsigned i;
1126         int slave_gid = slave;
1127         int vfs;
1128
1129         struct mlx4_slaves_pport slaves_pport;
1130         struct mlx4_active_ports actv_ports;
1131         unsigned max_port_p_one;
1132
1133         if (slave == 0)
1134                 return 0;
1135
1136         slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1137         actv_ports = mlx4_get_active_ports(dev, slave);
1138         max_port_p_one = find_first_bit(actv_ports.ports, dev->caps.num_ports) +
1139                 bitmap_weight(actv_ports.ports, dev->caps.num_ports) + 1;
1140
1141         for (i = 1; i < max_port_p_one; i++) {
1142                 struct mlx4_active_ports exclusive_ports;
1143                 struct mlx4_slaves_pport slaves_pport_actv;
1144                 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1145                 set_bit(i - 1, exclusive_ports.ports);
1146                 if (i == port)
1147                         continue;
1148                 slaves_pport_actv = mlx4_phys_to_slaves_pport_actv(
1149                                     dev, &exclusive_ports);
1150                 slave_gid -= bitmap_weight(slaves_pport_actv.slaves,
1151                                            dev->persist->num_vfs + 1);
1152         }
1153         gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
1154         vfs = bitmap_weight(slaves_pport.slaves, dev->persist->num_vfs + 1) - 1;
1155         if (slave_gid <= gids % vfs)
1156                 return MLX4_ROCE_PF_GIDS + ((gids / vfs) + 1) * (slave_gid - 1);
1157
1158         return MLX4_ROCE_PF_GIDS + (gids % vfs) +
1159                 ((gids / vfs) * (slave_gid - 1));
1160 }
1161 EXPORT_SYMBOL_GPL(mlx4_get_base_gid_ix);
1162
1163 static int mlx4_reset_roce_port_gids(struct mlx4_dev *dev, int slave,
1164                                      int port, struct mlx4_cmd_mailbox *mailbox)
1165 {
1166         struct mlx4_roce_gid_entry *gid_entry_mbox;
1167         struct mlx4_priv *priv = mlx4_priv(dev);
1168         int num_gids, base, offset;
1169         int i, err;
1170
1171         num_gids = mlx4_get_slave_num_gids(dev, slave, port);
1172         base = mlx4_get_base_gid_ix(dev, slave, port);
1173
1174         memset(mailbox->buf, 0, MLX4_MAILBOX_SIZE);
1175
1176         mutex_lock(&(priv->port[port].gid_table.mutex));
1177         /* Zero-out gids belonging to that slave in the port GID table */
1178         for (i = 0, offset = base; i < num_gids; offset++, i++)
1179                 memcpy(priv->port[port].gid_table.roce_gids[offset].raw,
1180                        zgid_entry.raw, MLX4_ROCE_GID_ENTRY_SIZE);
1181
1182         /* Now, copy roce port gids table to mailbox for passing to FW */
1183         gid_entry_mbox = (struct mlx4_roce_gid_entry *)mailbox->buf;
1184         for (i = 0; i < MLX4_ROCE_MAX_GIDS; gid_entry_mbox++, i++)
1185                 memcpy(gid_entry_mbox->raw,
1186                        priv->port[port].gid_table.roce_gids[i].raw,
1187                        MLX4_ROCE_GID_ENTRY_SIZE);
1188
1189         err = mlx4_cmd(dev, mailbox->dma,
1190                        ((u32)port) | (MLX4_SET_PORT_GID_TABLE << 8),
1191                        MLX4_SET_PORT_ETH_OPCODE, MLX4_CMD_SET_PORT,
1192                        MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
1193         mutex_unlock(&(priv->port[port].gid_table.mutex));
1194         return err;
1195 }
1196
1197
1198 void mlx4_reset_roce_gids(struct mlx4_dev *dev, int slave)
1199 {
1200         struct mlx4_active_ports actv_ports;
1201         struct mlx4_cmd_mailbox *mailbox;
1202         int num_eth_ports, err;
1203         int i;
1204
1205         if (slave < 0 || slave > dev->persist->num_vfs)
1206                 return;
1207
1208         actv_ports = mlx4_get_active_ports(dev, slave);
1209
1210         for (i = 0, num_eth_ports = 0; i < dev->caps.num_ports; i++) {
1211                 if (test_bit(i, actv_ports.ports)) {
1212                         if (dev->caps.port_type[i + 1] != MLX4_PORT_TYPE_ETH)
1213                                 continue;
1214                         num_eth_ports++;
1215                 }
1216         }
1217
1218         if (!num_eth_ports)
1219                 return;
1220
1221         /* have ETH ports.  Alloc mailbox for SET_PORT command */
1222         mailbox = mlx4_alloc_cmd_mailbox(dev);
1223         if (IS_ERR(mailbox))
1224                 return;
1225
1226         for (i = 0; i < dev->caps.num_ports; i++) {
1227                 if (test_bit(i, actv_ports.ports)) {
1228                         if (dev->caps.port_type[i + 1] != MLX4_PORT_TYPE_ETH)
1229                                 continue;
1230                         err = mlx4_reset_roce_port_gids(dev, slave, i + 1, mailbox);
1231                         if (err)
1232                                 mlx4_warn(dev, "Could not reset ETH port GID table for slave %d, port %d (%d)\n",
1233                                           slave, i + 1, err);
1234                 }
1235         }
1236
1237         mlx4_free_cmd_mailbox(dev, mailbox);
1238         return;
1239 }
1240
1241 static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod,
1242                                 u8 op_mod, struct mlx4_cmd_mailbox *inbox)
1243 {
1244         struct mlx4_priv *priv = mlx4_priv(dev);
1245         struct mlx4_port_info *port_info;
1246         struct mlx4_mfunc_master_ctx *master = &priv->mfunc.master;
1247         struct mlx4_slave_state *slave_st = &master->slave_state[slave];
1248         struct mlx4_set_port_rqp_calc_context *qpn_context;
1249         struct mlx4_set_port_general_context *gen_context;
1250         struct mlx4_roce_gid_entry *gid_entry_tbl, *gid_entry_mbox, *gid_entry_mb1;
1251         int reset_qkey_viols;
1252         int port;
1253         int is_eth;
1254         int num_gids;
1255         int base;
1256         u32 in_modifier;
1257         u32 promisc;
1258         u16 mtu, prev_mtu;
1259         int err;
1260         int i, j;
1261         int offset;
1262         __be32 agg_cap_mask;
1263         __be32 slave_cap_mask;
1264         __be32 new_cap_mask;
1265
1266         port = in_mod & 0xff;
1267         in_modifier = in_mod >> 8;
1268         is_eth = op_mod;
1269         port_info = &priv->port[port];
1270
1271         /* Slaves cannot perform SET_PORT operations except changing MTU */
1272         if (is_eth) {
1273                 if (slave != dev->caps.function &&
1274                     in_modifier != MLX4_SET_PORT_GENERAL &&
1275                     in_modifier != MLX4_SET_PORT_GID_TABLE) {
1276                         mlx4_warn(dev, "denying SET_PORT for slave:%d\n",
1277                                         slave);
1278                         return -EINVAL;
1279                 }
1280                 switch (in_modifier) {
1281                 case MLX4_SET_PORT_RQP_CALC:
1282                         qpn_context = inbox->buf;
1283                         qpn_context->base_qpn =
1284                                 cpu_to_be32(port_info->base_qpn);
1285                         qpn_context->n_mac = 0x7;
1286                         promisc = be32_to_cpu(qpn_context->promisc) >>
1287                                 SET_PORT_PROMISC_SHIFT;
1288                         qpn_context->promisc = cpu_to_be32(
1289                                 promisc << SET_PORT_PROMISC_SHIFT |
1290                                 port_info->base_qpn);
1291                         promisc = be32_to_cpu(qpn_context->mcast) >>
1292                                 SET_PORT_MC_PROMISC_SHIFT;
1293                         qpn_context->mcast = cpu_to_be32(
1294                                 promisc << SET_PORT_MC_PROMISC_SHIFT |
1295                                 port_info->base_qpn);
1296                         break;
1297                 case MLX4_SET_PORT_GENERAL:
1298                         gen_context = inbox->buf;
1299                         /* Mtu is configured as the max MTU among all the
1300                          * the functions on the port. */
1301                         mtu = be16_to_cpu(gen_context->mtu);
1302                         mtu = min_t(int, mtu, dev->caps.eth_mtu_cap[port] +
1303                                     ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
1304                         prev_mtu = slave_st->mtu[port];
1305                         slave_st->mtu[port] = mtu;
1306                         if (mtu > master->max_mtu[port])
1307                                 master->max_mtu[port] = mtu;
1308                         if (mtu < prev_mtu && prev_mtu ==
1309                                                 master->max_mtu[port]) {
1310                                 slave_st->mtu[port] = mtu;
1311                                 master->max_mtu[port] = mtu;
1312                                 for (i = 0; i < dev->num_slaves; i++) {
1313                                         master->max_mtu[port] =
1314                                         max(master->max_mtu[port],
1315                                             master->slave_state[i].mtu[port]);
1316                                 }
1317                         }
1318
1319                         gen_context->mtu = cpu_to_be16(master->max_mtu[port]);
1320                         break;
1321                 case MLX4_SET_PORT_GID_TABLE:
1322                         /* change to MULTIPLE entries: number of guest's gids
1323                          * need a FOR-loop here over number of gids the guest has.
1324                          * 1. Check no duplicates in gids passed by slave
1325                          */
1326                         num_gids = mlx4_get_slave_num_gids(dev, slave, port);
1327                         base = mlx4_get_base_gid_ix(dev, slave, port);
1328                         gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1329                         for (i = 0; i < num_gids; gid_entry_mbox++, i++) {
1330                                 if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
1331                                             sizeof(zgid_entry)))
1332                                         continue;
1333                                 gid_entry_mb1 = gid_entry_mbox + 1;
1334                                 for (j = i + 1; j < num_gids; gid_entry_mb1++, j++) {
1335                                         if (!memcmp(gid_entry_mb1->raw,
1336                                                     zgid_entry.raw, sizeof(zgid_entry)))
1337                                                 continue;
1338                                         if (!memcmp(gid_entry_mb1->raw, gid_entry_mbox->raw,
1339                                                     sizeof(gid_entry_mbox->raw))) {
1340                                                 /* found duplicate */
1341                                                 return -EINVAL;
1342                                         }
1343                                 }
1344                         }
1345
1346                         /* 2. Check that do not have duplicates in OTHER
1347                          *    entries in the port GID table
1348                          */
1349
1350                         mutex_lock(&(priv->port[port].gid_table.mutex));
1351                         for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
1352                                 if (i >= base && i < base + num_gids)
1353                                         continue; /* don't compare to slave's current gids */
1354                                 gid_entry_tbl = &priv->port[port].gid_table.roce_gids[i];
1355                                 if (!memcmp(gid_entry_tbl->raw, zgid_entry.raw, sizeof(zgid_entry)))
1356                                         continue;
1357                                 gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1358                                 for (j = 0; j < num_gids; gid_entry_mbox++, j++) {
1359                                         if (!memcmp(gid_entry_mbox->raw, zgid_entry.raw,
1360                                                     sizeof(zgid_entry)))
1361                                                 continue;
1362                                         if (!memcmp(gid_entry_mbox->raw, gid_entry_tbl->raw,
1363                                                     sizeof(gid_entry_tbl->raw))) {
1364                                                 /* found duplicate */
1365                                                 mlx4_warn(dev, "requested gid entry for slave:%d is a duplicate of gid at index %d\n",
1366                                                           slave, i);
1367                                                 mutex_unlock(&(priv->port[port].gid_table.mutex));
1368                                                 return -EINVAL;
1369                                         }
1370                                 }
1371                         }
1372
1373                         /* insert slave GIDs with memcpy, starting at slave's base index */
1374                         gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1375                         for (i = 0, offset = base; i < num_gids; gid_entry_mbox++, offset++, i++)
1376                                 memcpy(priv->port[port].gid_table.roce_gids[offset].raw,
1377                                        gid_entry_mbox->raw, MLX4_ROCE_GID_ENTRY_SIZE);
1378
1379                         /* Now, copy roce port gids table to current mailbox for passing to FW */
1380                         gid_entry_mbox = (struct mlx4_roce_gid_entry *)(inbox->buf);
1381                         for (i = 0; i < MLX4_ROCE_MAX_GIDS; gid_entry_mbox++, i++)
1382                                 memcpy(gid_entry_mbox->raw,
1383                                        priv->port[port].gid_table.roce_gids[i].raw,
1384                                        MLX4_ROCE_GID_ENTRY_SIZE);
1385
1386                         err = mlx4_cmd(dev, inbox->dma, in_mod & 0xffff, op_mod,
1387                                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1388                                        MLX4_CMD_NATIVE);
1389                         mutex_unlock(&(priv->port[port].gid_table.mutex));
1390                         return err;
1391                 }
1392
1393                 return mlx4_cmd(dev, inbox->dma, in_mod & 0xffff, op_mod,
1394                                 MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1395                                 MLX4_CMD_NATIVE);
1396         }
1397
1398         /* Slaves are not allowed to SET_PORT beacon (LED) blink */
1399         if (op_mod == MLX4_SET_PORT_BEACON_OPCODE) {
1400                 mlx4_warn(dev, "denying SET_PORT Beacon slave:%d\n", slave);
1401                 return -EPERM;
1402         }
1403
1404         /* For IB, we only consider:
1405          * - The capability mask, which is set to the aggregate of all
1406          *   slave function capabilities
1407          * - The QKey violatin counter - reset according to each request.
1408          */
1409
1410         if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1411                 reset_qkey_viols = (*(u8 *) inbox->buf) & 0x40;
1412                 new_cap_mask = ((__be32 *) inbox->buf)[2];
1413         } else {
1414                 reset_qkey_viols = ((u8 *) inbox->buf)[3] & 0x1;
1415                 new_cap_mask = ((__be32 *) inbox->buf)[1];
1416         }
1417
1418         /* slave may not set the IS_SM capability for the port */
1419         if (slave != mlx4_master_func_num(dev) &&
1420             (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_IS_SM))
1421                 return -EINVAL;
1422
1423         /* No DEV_MGMT in multifunc mode */
1424         if (mlx4_is_mfunc(dev) &&
1425             (be32_to_cpu(new_cap_mask) & MLX4_PORT_CAP_DEV_MGMT_SUP))
1426                 return -EINVAL;
1427
1428         agg_cap_mask = 0;
1429         slave_cap_mask =
1430                 priv->mfunc.master.slave_state[slave].ib_cap_mask[port];
1431         priv->mfunc.master.slave_state[slave].ib_cap_mask[port] = new_cap_mask;
1432         for (i = 0; i < dev->num_slaves; i++)
1433                 agg_cap_mask |=
1434                         priv->mfunc.master.slave_state[i].ib_cap_mask[port];
1435
1436         /* only clear mailbox for guests.  Master may be setting
1437         * MTU or PKEY table size
1438         */
1439         if (slave != dev->caps.function)
1440                 memset(inbox->buf, 0, 256);
1441         if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
1442                 *(u8 *) inbox->buf         |= !!reset_qkey_viols << 6;
1443                 ((__be32 *) inbox->buf)[2] = agg_cap_mask;
1444         } else {
1445                 ((u8 *) inbox->buf)[3]     |= !!reset_qkey_viols;
1446                 ((__be32 *) inbox->buf)[1] = agg_cap_mask;
1447         }
1448
1449         err = mlx4_cmd(dev, inbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
1450                        MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
1451         if (err)
1452                 priv->mfunc.master.slave_state[slave].ib_cap_mask[port] =
1453                         slave_cap_mask;
1454         return err;
1455 }
1456
1457 int mlx4_SET_PORT_wrapper(struct mlx4_dev *dev, int slave,
1458                           struct mlx4_vhcr *vhcr,
1459                           struct mlx4_cmd_mailbox *inbox,
1460                           struct mlx4_cmd_mailbox *outbox,
1461                           struct mlx4_cmd_info *cmd)
1462 {
1463         int port = mlx4_slave_convert_port(
1464                         dev, slave, vhcr->in_modifier & 0xFF);
1465
1466         if (port < 0)
1467                 return -EINVAL;
1468
1469         vhcr->in_modifier = (vhcr->in_modifier & ~0xFF) |
1470                             (port & 0xFF);
1471
1472         return mlx4_common_set_port(dev, slave, vhcr->in_modifier,
1473                                     vhcr->op_modifier, inbox);
1474 }
1475
1476 /* bit locations for set port command with zero op modifier */
1477 enum {
1478         MLX4_SET_PORT_VL_CAP     = 4, /* bits 7:4 */
1479         MLX4_SET_PORT_MTU_CAP    = 12, /* bits 15:12 */
1480         MLX4_CHANGE_PORT_PKEY_TBL_SZ = 20,
1481         MLX4_CHANGE_PORT_VL_CAP  = 21,
1482         MLX4_CHANGE_PORT_MTU_CAP = 22,
1483 };
1484
1485 int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port, int pkey_tbl_sz)
1486 {
1487         struct mlx4_cmd_mailbox *mailbox;
1488         int err, vl_cap, pkey_tbl_flag = 0;
1489
1490         if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
1491                 return 0;
1492
1493         mailbox = mlx4_alloc_cmd_mailbox(dev);
1494         if (IS_ERR(mailbox))
1495                 return PTR_ERR(mailbox);
1496
1497         ((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
1498
1499         if (pkey_tbl_sz >= 0 && mlx4_is_master(dev)) {
1500                 pkey_tbl_flag = 1;
1501                 ((__be16 *) mailbox->buf)[20] = cpu_to_be16(pkey_tbl_sz);
1502         }
1503
1504         /* IB VL CAP enum isn't used by the firmware, just numerical values */
1505         for (vl_cap = 8; vl_cap >= 1; vl_cap >>= 1) {
1506                 ((__be32 *) mailbox->buf)[0] = cpu_to_be32(
1507                         (1 << MLX4_CHANGE_PORT_MTU_CAP) |
1508                         (1 << MLX4_CHANGE_PORT_VL_CAP)  |
1509                         (pkey_tbl_flag << MLX4_CHANGE_PORT_PKEY_TBL_SZ) |
1510                         (dev->caps.port_ib_mtu[port] << MLX4_SET_PORT_MTU_CAP) |
1511                         (vl_cap << MLX4_SET_PORT_VL_CAP));
1512                 err = mlx4_cmd(dev, mailbox->dma, port,
1513                                MLX4_SET_PORT_IB_OPCODE, MLX4_CMD_SET_PORT,
1514                                MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
1515                 if (err != -ENOMEM)
1516                         break;
1517         }
1518
1519         mlx4_free_cmd_mailbox(dev, mailbox);
1520         return err;
1521 }
1522
1523 #define SET_PORT_ROCE_2_FLAGS          0x10
1524 #define MLX4_SET_PORT_ROCE_V1_V2       0x2
1525 int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
1526                           u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx)
1527 {
1528         struct mlx4_cmd_mailbox *mailbox;
1529         struct mlx4_set_port_general_context *context;
1530         int err;
1531         u32 in_mod;
1532
1533         mailbox = mlx4_alloc_cmd_mailbox(dev);
1534         if (IS_ERR(mailbox))
1535                 return PTR_ERR(mailbox);
1536         context = mailbox->buf;
1537         context->flags = SET_PORT_GEN_ALL_VALID;
1538         context->mtu = cpu_to_be16(mtu);
1539         context->pptx = (pptx * (!pfctx)) << 7;
1540         context->pfctx = pfctx;
1541         context->pprx = (pprx * (!pfcrx)) << 7;
1542         context->pfcrx = pfcrx;
1543
1544         if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2) {
1545                 context->flags |= SET_PORT_ROCE_2_FLAGS;
1546                 context->roce_mode |=
1547                         MLX4_SET_PORT_ROCE_V1_V2 << 4;
1548         }
1549         in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
1550         err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1551                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1552                        MLX4_CMD_WRAPPED);
1553
1554         mlx4_free_cmd_mailbox(dev, mailbox);
1555         return err;
1556 }
1557 EXPORT_SYMBOL(mlx4_SET_PORT_general);
1558
1559 int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
1560                            u8 promisc)
1561 {
1562         struct mlx4_cmd_mailbox *mailbox;
1563         struct mlx4_set_port_rqp_calc_context *context;
1564         int err;
1565         u32 in_mod;
1566         u32 m_promisc = (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) ?
1567                 MCAST_DIRECT : MCAST_DEFAULT;
1568
1569         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1570                 return 0;
1571
1572         mailbox = mlx4_alloc_cmd_mailbox(dev);
1573         if (IS_ERR(mailbox))
1574                 return PTR_ERR(mailbox);
1575         context = mailbox->buf;
1576         context->base_qpn = cpu_to_be32(base_qpn);
1577         context->n_mac = dev->caps.log_num_macs;
1578         context->promisc = cpu_to_be32(promisc << SET_PORT_PROMISC_SHIFT |
1579                                        base_qpn);
1580         context->mcast = cpu_to_be32(m_promisc << SET_PORT_MC_PROMISC_SHIFT |
1581                                      base_qpn);
1582         context->intra_no_vlan = 0;
1583         context->no_vlan = MLX4_NO_VLAN_IDX;
1584         context->intra_vlan_miss = 0;
1585         context->vlan_miss = MLX4_VLAN_MISS_IDX;
1586
1587         in_mod = MLX4_SET_PORT_RQP_CALC << 8 | port;
1588         err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1589                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1590                        MLX4_CMD_WRAPPED);
1591
1592         mlx4_free_cmd_mailbox(dev, mailbox);
1593         return err;
1594 }
1595 EXPORT_SYMBOL(mlx4_SET_PORT_qpn_calc);
1596
1597 int mlx4_SET_PORT_fcs_check(struct mlx4_dev *dev, u8 port, u8 ignore_fcs_value)
1598 {
1599         struct mlx4_cmd_mailbox *mailbox;
1600         struct mlx4_set_port_general_context *context;
1601         u32 in_mod;
1602         int err;
1603
1604         mailbox = mlx4_alloc_cmd_mailbox(dev);
1605         if (IS_ERR(mailbox))
1606                 return PTR_ERR(mailbox);
1607         context = mailbox->buf;
1608         context->v_ignore_fcs |= MLX4_FLAG_V_IGNORE_FCS_MASK;
1609         if (ignore_fcs_value)
1610                 context->ignore_fcs |= MLX4_IGNORE_FCS_MASK;
1611         else
1612                 context->ignore_fcs &= ~MLX4_IGNORE_FCS_MASK;
1613
1614         in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
1615         err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
1616                        MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
1617
1618         mlx4_free_cmd_mailbox(dev, mailbox);
1619         return err;
1620 }
1621 EXPORT_SYMBOL(mlx4_SET_PORT_fcs_check);
1622
1623 enum {
1624         VXLAN_ENABLE_MODIFY     = 1 << 7,
1625         VXLAN_STEERING_MODIFY   = 1 << 6,
1626
1627         VXLAN_ENABLE            = 1 << 7,
1628 };
1629
1630 struct mlx4_set_port_vxlan_context {
1631         u32     reserved1;
1632         u8      modify_flags;
1633         u8      reserved2;
1634         u8      enable_flags;
1635         u8      steering;
1636 };
1637
1638 int mlx4_SET_PORT_VXLAN(struct mlx4_dev *dev, u8 port, u8 steering, int enable)
1639 {
1640         int err;
1641         u32 in_mod;
1642         struct mlx4_cmd_mailbox *mailbox;
1643         struct mlx4_set_port_vxlan_context  *context;
1644
1645         mailbox = mlx4_alloc_cmd_mailbox(dev);
1646         if (IS_ERR(mailbox))
1647                 return PTR_ERR(mailbox);
1648         context = mailbox->buf;
1649         memset(context, 0, sizeof(*context));
1650
1651         context->modify_flags = VXLAN_ENABLE_MODIFY | VXLAN_STEERING_MODIFY;
1652         if (enable)
1653                 context->enable_flags = VXLAN_ENABLE;
1654         context->steering  = steering;
1655
1656         in_mod = MLX4_SET_PORT_VXLAN << 8 | port;
1657         err = mlx4_cmd(dev, mailbox->dma, in_mod, MLX4_SET_PORT_ETH_OPCODE,
1658                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1659                        MLX4_CMD_NATIVE);
1660
1661         mlx4_free_cmd_mailbox(dev, mailbox);
1662         return err;
1663 }
1664 EXPORT_SYMBOL(mlx4_SET_PORT_VXLAN);
1665
1666 int mlx4_SET_PORT_BEACON(struct mlx4_dev *dev, u8 port, u16 time)
1667 {
1668         int err;
1669         struct mlx4_cmd_mailbox *mailbox;
1670
1671         mailbox = mlx4_alloc_cmd_mailbox(dev);
1672         if (IS_ERR(mailbox))
1673                 return PTR_ERR(mailbox);
1674
1675         *((__be32 *)mailbox->buf) = cpu_to_be32(time);
1676
1677         err = mlx4_cmd(dev, mailbox->dma, port, MLX4_SET_PORT_BEACON_OPCODE,
1678                        MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
1679                        MLX4_CMD_NATIVE);
1680
1681         mlx4_free_cmd_mailbox(dev, mailbox);
1682         return err;
1683 }
1684 EXPORT_SYMBOL(mlx4_SET_PORT_BEACON);
1685
1686 int mlx4_SET_MCAST_FLTR_wrapper(struct mlx4_dev *dev, int slave,
1687                                 struct mlx4_vhcr *vhcr,
1688                                 struct mlx4_cmd_mailbox *inbox,
1689                                 struct mlx4_cmd_mailbox *outbox,
1690                                 struct mlx4_cmd_info *cmd)
1691 {
1692         int err = 0;
1693
1694         return err;
1695 }
1696
1697 int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port,
1698                         u64 mac, u64 clear, u8 mode)
1699 {
1700         return mlx4_cmd(dev, (mac | (clear << 63)), port, mode,
1701                         MLX4_CMD_SET_MCAST_FLTR, MLX4_CMD_TIME_CLASS_B,
1702                         MLX4_CMD_WRAPPED);
1703 }
1704 EXPORT_SYMBOL(mlx4_SET_MCAST_FLTR);
1705
1706 int mlx4_SET_VLAN_FLTR_wrapper(struct mlx4_dev *dev, int slave,
1707                                struct mlx4_vhcr *vhcr,
1708                                struct mlx4_cmd_mailbox *inbox,
1709                                struct mlx4_cmd_mailbox *outbox,
1710                                struct mlx4_cmd_info *cmd)
1711 {
1712         int err = 0;
1713
1714         return err;
1715 }
1716
1717 int mlx4_common_dump_eth_stats(struct mlx4_dev *dev, int slave,
1718                                u32 in_mod, struct mlx4_cmd_mailbox *outbox)
1719 {
1720         return mlx4_cmd_box(dev, 0, outbox->dma, in_mod, 0,
1721                             MLX4_CMD_DUMP_ETH_STATS, MLX4_CMD_TIME_CLASS_B,
1722                             MLX4_CMD_NATIVE);
1723 }
1724
1725 int mlx4_DUMP_ETH_STATS_wrapper(struct mlx4_dev *dev, int slave,
1726                                 struct mlx4_vhcr *vhcr,
1727                                 struct mlx4_cmd_mailbox *inbox,
1728                                 struct mlx4_cmd_mailbox *outbox,
1729                                 struct mlx4_cmd_info *cmd)
1730 {
1731         if (slave != dev->caps.function)
1732                 return 0;
1733         return mlx4_common_dump_eth_stats(dev, slave,
1734                                           vhcr->in_modifier, outbox);
1735 }
1736
1737 int mlx4_get_slave_from_roce_gid(struct mlx4_dev *dev, int port, u8 *gid,
1738                                  int *slave_id)
1739 {
1740         struct mlx4_priv *priv = mlx4_priv(dev);
1741         int i, found_ix = -1;
1742         int vf_gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS;
1743         struct mlx4_slaves_pport slaves_pport;
1744         unsigned num_vfs;
1745         int slave_gid;
1746
1747         if (!mlx4_is_mfunc(dev))
1748                 return -EINVAL;
1749
1750         slaves_pport = mlx4_phys_to_slaves_pport(dev, port);
1751         num_vfs = bitmap_weight(slaves_pport.slaves,
1752                                 dev->persist->num_vfs + 1) - 1;
1753
1754         for (i = 0; i < MLX4_ROCE_MAX_GIDS; i++) {
1755                 if (!memcmp(priv->port[port].gid_table.roce_gids[i].raw, gid,
1756                             MLX4_ROCE_GID_ENTRY_SIZE)) {
1757                         found_ix = i;
1758                         break;
1759                 }
1760         }
1761
1762         if (found_ix >= 0) {
1763                 /* Calculate a slave_gid which is the slave number in the gid
1764                  * table and not a globally unique slave number.
1765                  */
1766                 if (found_ix < MLX4_ROCE_PF_GIDS)
1767                         slave_gid = 0;
1768                 else if (found_ix < MLX4_ROCE_PF_GIDS + (vf_gids % num_vfs) *
1769                          (vf_gids / num_vfs + 1))
1770                         slave_gid = ((found_ix - MLX4_ROCE_PF_GIDS) /
1771                                      (vf_gids / num_vfs + 1)) + 1;
1772                 else
1773                         slave_gid =
1774                         ((found_ix - MLX4_ROCE_PF_GIDS -
1775                           ((vf_gids % num_vfs) * ((vf_gids / num_vfs + 1)))) /
1776                          (vf_gids / num_vfs)) + vf_gids % num_vfs + 1;
1777
1778                 /* Calculate the globally unique slave id */
1779                 if (slave_gid) {
1780                         struct mlx4_active_ports exclusive_ports;
1781                         struct mlx4_active_ports actv_ports;
1782                         struct mlx4_slaves_pport slaves_pport_actv;
1783                         unsigned max_port_p_one;
1784                         int num_vfs_before = 0;
1785                         int candidate_slave_gid;
1786
1787                         /* Calculate how many VFs are on the previous port, if exists */
1788                         for (i = 1; i < port; i++) {
1789                                 bitmap_zero(exclusive_ports.ports, dev->caps.num_ports);
1790                                 set_bit(i - 1, exclusive_ports.ports);
1791                                 slaves_pport_actv =
1792                                         mlx4_phys_to_slaves_pport_actv(
1793                                                         dev, &exclusive_ports);
1794                                 num_vfs_before += bitmap_weight(
1795                                                 slaves_pport_actv.slaves,
1796                                                 dev->persist->num_vfs + 1);
1797                         }
1798
1799                         /* candidate_slave_gid isn't necessarily the correct slave, but
1800                          * it has the same number of ports and is assigned to the same
1801                          * ports as the real slave we're looking for. On dual port VF,
1802                          * slave_gid = [single port VFs on port <port>] +
1803                          * [offset of the current slave from the first dual port VF] +
1804                          * 1 (for the PF).
1805                          */
1806                         candidate_slave_gid = slave_gid + num_vfs_before;
1807
1808                         actv_ports = mlx4_get_active_ports(dev, candidate_slave_gid);
1809                         max_port_p_one = find_first_bit(
1810                                 actv_ports.ports, dev->caps.num_ports) +
1811                                 bitmap_weight(actv_ports.ports,
1812                                               dev->caps.num_ports) + 1;
1813
1814                         /* Calculate the real slave number */
1815                         for (i = 1; i < max_port_p_one; i++) {
1816                                 if (i == port)
1817                                         continue;
1818                                 bitmap_zero(exclusive_ports.ports,
1819                                             dev->caps.num_ports);
1820                                 set_bit(i - 1, exclusive_ports.ports);
1821                                 slaves_pport_actv =
1822                                         mlx4_phys_to_slaves_pport_actv(
1823                                                 dev, &exclusive_ports);
1824                                 slave_gid += bitmap_weight(
1825                                                 slaves_pport_actv.slaves,
1826                                                 dev->persist->num_vfs + 1);
1827                         }
1828                 }
1829                 *slave_id = slave_gid;
1830         }
1831
1832         return (found_ix >= 0) ? 0 : -EINVAL;
1833 }
1834 EXPORT_SYMBOL(mlx4_get_slave_from_roce_gid);
1835
1836 int mlx4_get_roce_gid_from_slave(struct mlx4_dev *dev, int port, int slave_id,
1837                                  u8 *gid)
1838 {
1839         struct mlx4_priv *priv = mlx4_priv(dev);
1840
1841         if (!mlx4_is_master(dev))
1842                 return -EINVAL;
1843
1844         memcpy(gid, priv->port[port].gid_table.roce_gids[slave_id].raw,
1845                MLX4_ROCE_GID_ENTRY_SIZE);
1846         return 0;
1847 }
1848 EXPORT_SYMBOL(mlx4_get_roce_gid_from_slave);
1849
1850 /* Cable Module Info */
1851 #define MODULE_INFO_MAX_READ 48
1852
1853 #define I2C_ADDR_LOW  0x50
1854 #define I2C_ADDR_HIGH 0x51
1855 #define I2C_PAGE_SIZE 256
1856
1857 /* Module Info Data */
1858 struct mlx4_cable_info {
1859         u8      i2c_addr;
1860         u8      page_num;
1861         __be16  dev_mem_address;
1862         __be16  reserved1;
1863         __be16  size;
1864         __be32  reserved2[2];
1865         u8      data[MODULE_INFO_MAX_READ];
1866 };
1867
1868 enum cable_info_err {
1869          CABLE_INF_INV_PORT      = 0x1,
1870          CABLE_INF_OP_NOSUP      = 0x2,
1871          CABLE_INF_NOT_CONN      = 0x3,
1872          CABLE_INF_NO_EEPRM      = 0x4,
1873          CABLE_INF_PAGE_ERR      = 0x5,
1874          CABLE_INF_INV_ADDR      = 0x6,
1875          CABLE_INF_I2C_ADDR      = 0x7,
1876          CABLE_INF_QSFP_VIO      = 0x8,
1877          CABLE_INF_I2C_BUSY      = 0x9,
1878 };
1879
1880 #define MAD_STATUS_2_CABLE_ERR(mad_status) ((mad_status >> 8) & 0xFF)
1881
1882 static inline const char *cable_info_mad_err_str(u16 mad_status)
1883 {
1884         u8 err = MAD_STATUS_2_CABLE_ERR(mad_status);
1885
1886         switch (err) {
1887         case CABLE_INF_INV_PORT:
1888                 return "invalid port selected";
1889         case CABLE_INF_OP_NOSUP:
1890                 return "operation not supported for this port (the port is of type CX4 or internal)";
1891         case CABLE_INF_NOT_CONN:
1892                 return "cable is not connected";
1893         case CABLE_INF_NO_EEPRM:
1894                 return "the connected cable has no EPROM (passive copper cable)";
1895         case CABLE_INF_PAGE_ERR:
1896                 return "page number is greater than 15";
1897         case CABLE_INF_INV_ADDR:
1898                 return "invalid device_address or size (that is, size equals 0 or address+size is greater than 256)";
1899         case CABLE_INF_I2C_ADDR:
1900                 return "invalid I2C slave address";
1901         case CABLE_INF_QSFP_VIO:
1902                 return "at least one cable violates the QSFP specification and ignores the modsel signal";
1903         case CABLE_INF_I2C_BUSY:
1904                 return "I2C bus is constantly busy";
1905         }
1906         return "Unknown Error";
1907 }
1908
1909 /**
1910  * mlx4_get_module_info - Read cable module eeprom data
1911  * @dev: mlx4_dev.
1912  * @port: port number.
1913  * @offset: byte offset in eeprom to start reading data from.
1914  * @size: num of bytes to read.
1915  * @data: output buffer to put the requested data into.
1916  *
1917  * Reads cable module eeprom data, puts the outcome data into
1918  * data pointer paramer.
1919  * Returns num of read bytes on success or a negative error
1920  * code.
1921  */
1922 int mlx4_get_module_info(struct mlx4_dev *dev, u8 port,
1923                          u16 offset, u16 size, u8 *data)
1924 {
1925         struct mlx4_cmd_mailbox *inbox, *outbox;
1926         struct mlx4_mad_ifc *inmad, *outmad;
1927         struct mlx4_cable_info *cable_info;
1928         u16 i2c_addr;
1929         int ret;
1930
1931         if (size > MODULE_INFO_MAX_READ)
1932                 size = MODULE_INFO_MAX_READ;
1933
1934         inbox = mlx4_alloc_cmd_mailbox(dev);
1935         if (IS_ERR(inbox))
1936                 return PTR_ERR(inbox);
1937
1938         outbox = mlx4_alloc_cmd_mailbox(dev);
1939         if (IS_ERR(outbox)) {
1940                 mlx4_free_cmd_mailbox(dev, inbox);
1941                 return PTR_ERR(outbox);
1942         }
1943
1944         inmad = (struct mlx4_mad_ifc *)(inbox->buf);
1945         outmad = (struct mlx4_mad_ifc *)(outbox->buf);
1946
1947         inmad->method = 0x1; /* Get */
1948         inmad->class_version = 0x1;
1949         inmad->mgmt_class = 0x1;
1950         inmad->base_version = 0x1;
1951         inmad->attr_id = cpu_to_be16(0xFF60); /* Module Info */
1952
1953         if (offset < I2C_PAGE_SIZE && offset + size > I2C_PAGE_SIZE)
1954                 /* Cross pages reads are not allowed
1955                  * read until offset 256 in low page
1956                  */
1957                 size -= offset + size - I2C_PAGE_SIZE;
1958
1959         i2c_addr = I2C_ADDR_LOW;
1960         if (offset >= I2C_PAGE_SIZE) {
1961                 /* Reset offset to high page */
1962                 i2c_addr = I2C_ADDR_HIGH;
1963                 offset -= I2C_PAGE_SIZE;
1964         }
1965
1966         cable_info = (struct mlx4_cable_info *)inmad->data;
1967         cable_info->dev_mem_address = cpu_to_be16(offset);
1968         cable_info->page_num = 0;
1969         cable_info->i2c_addr = i2c_addr;
1970         cable_info->size = cpu_to_be16(size);
1971
1972         ret = mlx4_cmd_box(dev, inbox->dma, outbox->dma, port, 3,
1973                            MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
1974                            MLX4_CMD_NATIVE);
1975         if (ret)
1976                 goto out;
1977
1978         if (be16_to_cpu(outmad->status)) {
1979                 /* Mad returned with bad status */
1980                 ret = be16_to_cpu(outmad->status);
1981                 mlx4_warn(dev,
1982                           "MLX4_CMD_MAD_IFC Get Module info attr(%x) port(%d) i2c_addr(%x) offset(%d) size(%d): Response Mad Status(%x) - %s\n",
1983                           0xFF60, port, i2c_addr, offset, size,
1984                           ret, cable_info_mad_err_str(ret));
1985
1986                 if (i2c_addr == I2C_ADDR_HIGH &&
1987                     MAD_STATUS_2_CABLE_ERR(ret) == CABLE_INF_I2C_ADDR)
1988                         /* Some SFP cables do not support i2c slave
1989                          * address 0x51 (high page), abort silently.
1990                          */
1991                         ret = 0;
1992                 else
1993                         ret = -ret;
1994                 goto out;
1995         }
1996         cable_info = (struct mlx4_cable_info *)outmad->data;
1997         memcpy(data, cable_info->data, size);
1998         ret = size;
1999 out:
2000         mlx4_free_cmd_mailbox(dev, inbox);
2001         mlx4_free_cmd_mailbox(dev, outbox);
2002         return ret;
2003 }
2004 EXPORT_SYMBOL(mlx4_get_module_info);