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

   1 /*
   2  * Copyright (c) 2006, 2007 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #include <linux/string.h>
  35 #include <linux/etherdevice.h>
  36
  37 #include <linux/mlx4/cmd.h>
  38 #include <linux/export.h>
  39
  40 #include "mlx4.h"
  41
  42 #define MGM_QPN_MASK       0x00FFFFFF
  43 #define MGM_BLCK_LB_BIT    30
  44
  45 static const u8 zero_gid[16];   /* automatically initialized to 0 */
  46
  47 struct mlx4_mgm {
  48         __be32                  next_gid_index;
  49         __be32                  members_count;
  50         u32                     reserved[2];
  51         u8                      gid[16];
  52         __be32                  qp[MLX4_MAX_QP_PER_MGM];
  53 };
  54
  55 int mlx4_get_mgm_entry_size(struct mlx4_dev *dev)
  56 {
  57         return 1 << dev->oper_log_mgm_entry_size;
  58 }
  59
  60 int mlx4_get_qp_per_mgm(struct mlx4_dev *dev)
  61 {
  62         return 4 * (mlx4_get_mgm_entry_size(dev) / 16 - 2);
  63 }
  64
  65 static int mlx4_QP_FLOW_STEERING_ATTACH(struct mlx4_dev *dev,
  66                                         struct mlx4_cmd_mailbox *mailbox,
  67                                         u32 size,
  68                                         u64 *reg_id)
  69 {
  70         u64 imm;
  71         int err = 0;
  72
  73         err = mlx4_cmd_imm(dev, mailbox->dma, &imm, size, 0,
  74                            MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
  75                            MLX4_CMD_NATIVE);
  76         if (err)
  77                 return err;
  78         *reg_id = imm;
  79
  80         return err;
  81 }
  82
  83 static int mlx4_QP_FLOW_STEERING_DETACH(struct mlx4_dev *dev, u64 regid)
  84 {
  85         int err = 0;
  86
  87         err = mlx4_cmd(dev, regid, 0, 0,
  88                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
  89                        MLX4_CMD_NATIVE);
  90
  91         return err;
  92 }
  93
  94 static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index,
  95                            struct mlx4_cmd_mailbox *mailbox)
  96 {
  97         return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG,
  98                             MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
  99 }
 100
 101 static int mlx4_WRITE_ENTRY(struct mlx4_dev *dev, int index,
 102                             struct mlx4_cmd_mailbox *mailbox)
 103 {
 104         return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG,
 105                         MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 106 }
 107
 108 static int mlx4_WRITE_PROMISC(struct mlx4_dev *dev, u8 port, u8 steer,
 109                               struct mlx4_cmd_mailbox *mailbox)
 110 {
 111         u32 in_mod;
 112
 113         in_mod = (u32) port << 16 | steer << 1;
 114         return mlx4_cmd(dev, mailbox->dma, in_mod, 0x1,
 115                         MLX4_CMD_WRITE_MCG, MLX4_CMD_TIME_CLASS_A,
 116                         MLX4_CMD_NATIVE);
 117 }
 118
 119 static int mlx4_GID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
 120                          u16 *hash, u8 op_mod)
 121 {
 122         u64 imm;
 123         int err;
 124
 125         err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, op_mod,
 126                            MLX4_CMD_MGID_HASH, MLX4_CMD_TIME_CLASS_A,
 127                            MLX4_CMD_NATIVE);
 128
 129         if (!err)
 130                 *hash = imm;
 131
 132         return err;
 133 }
 134
 135 static struct mlx4_promisc_qp *get_promisc_qp(struct mlx4_dev *dev, u8 port,
 136                                               enum mlx4_steer_type steer,
 137                                               u32 qpn)
 138 {
 139         struct mlx4_steer *s_steer = &mlx4_priv(dev)->steer[port - 1];
 140         struct mlx4_promisc_qp *pqp;
 141
 142         list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
 143                 if (pqp->qpn == qpn)
 144                         return pqp;
 145         }
 146         /* not found */
 147         return NULL;
 148 }
 149
 150 /*
 151  * Add new entry to steering data structure.
 152  * All promisc QPs should be added as well
 153  */
 154 static int new_steering_entry(struct mlx4_dev *dev, u8 port,
 155                               enum mlx4_steer_type steer,
 156                               unsigned int index, u32 qpn)
 157 {
 158         struct mlx4_steer *s_steer;
 159         struct mlx4_cmd_mailbox *mailbox;
 160         struct mlx4_mgm *mgm;
 161         u32 members_count;
 162         struct mlx4_steer_index *new_entry;
 163         struct mlx4_promisc_qp *pqp;
 164         struct mlx4_promisc_qp *dqp = NULL;
 165         u32 prot;
 166         int err;
 167
 168         s_steer = &mlx4_priv(dev)->steer[port - 1];
 169         new_entry = kzalloc(sizeof *new_entry, GFP_KERNEL);
 170         if (!new_entry)
 171                 return -ENOMEM;
 172
 173         INIT_LIST_HEAD(&new_entry->duplicates);
 174         new_entry->index = index;
 175         list_add_tail(&new_entry->list, &s_steer->steer_entries[steer]);
 176
 177         /* If the given qpn is also a promisc qp,
 178          * it should be inserted to duplicates list
 179          */
 180         pqp = get_promisc_qp(dev, port, steer, qpn);
 181         if (pqp) {
 182                 dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
 183                 if (!dqp) {
 184                         err = -ENOMEM;
 185                         goto out_alloc;
 186                 }
 187                 dqp->qpn = qpn;
 188                 list_add_tail(&dqp->list, &new_entry->duplicates);
 189         }
 190
 191         /* if no promisc qps for this vep, we are done */
 192         if (list_empty(&s_steer->promisc_qps[steer]))
 193                 return 0;
 194
 195         /* now need to add all the promisc qps to the new
 196          * steering entry, as they should also receive the packets
 197          * destined to this address */
 198         mailbox = mlx4_alloc_cmd_mailbox(dev);
 199         if (IS_ERR(mailbox)) {
 200                 err = -ENOMEM;
 201                 goto out_alloc;
 202         }
 203         mgm = mailbox->buf;
 204
 205         err = mlx4_READ_ENTRY(dev, index, mailbox);
 206         if (err)
 207                 goto out_mailbox;
 208
 209         members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
 210         prot = be32_to_cpu(mgm->members_count) >> 30;
 211         list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
 212                 /* don't add already existing qpn */
 213                 if (pqp->qpn == qpn)
 214                         continue;
 215                 if (members_count == dev->caps.num_qp_per_mgm) {
 216                         /* out of space */
 217                         err = -ENOMEM;
 218                         goto out_mailbox;
 219                 }
 220
 221                 /* add the qpn */
 222                 mgm->qp[members_count++] = cpu_to_be32(pqp->qpn & MGM_QPN_MASK);
 223         }
 224         /* update the qps count and update the entry with all the promisc qps*/
 225         mgm->members_count = cpu_to_be32(members_count | (prot << 30));
 226         err = mlx4_WRITE_ENTRY(dev, index, mailbox);
 227
 228 out_mailbox:
 229         mlx4_free_cmd_mailbox(dev, mailbox);
 230         if (!err)
 231                 return 0;
 232 out_alloc:
 233         if (dqp) {
 234                 list_del(&dqp->list);
 235                 kfree(dqp);
 236         }
 237         list_del(&new_entry->list);
 238         kfree(new_entry);
 239         return err;
 240 }
 241
 242 /* update the data structures with existing steering entry */
 243 static int existing_steering_entry(struct mlx4_dev *dev, u8 port,
 244                                    enum mlx4_steer_type steer,
 245                                    unsigned int index, u32 qpn)
 246 {
 247         struct mlx4_steer *s_steer;
 248         struct mlx4_steer_index *tmp_entry, *entry = NULL;
 249         struct mlx4_promisc_qp *pqp;
 250         struct mlx4_promisc_qp *dqp;
 251
 252         s_steer = &mlx4_priv(dev)->steer[port - 1];
 253
 254         pqp = get_promisc_qp(dev, port, steer, qpn);
 255         if (!pqp)
 256                 return 0; /* nothing to do */
 257
 258         list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
 259                 if (tmp_entry->index == index) {
 260                         entry = tmp_entry;
 261                         break;
 262                 }
 263         }
 264         if (unlikely(!entry)) {
 265                 mlx4_warn(dev, "Steering entry at index %x is not registered\n", index);
 266                 return -EINVAL;
 267         }
 268
 269         /* the given qpn is listed as a promisc qpn
 270          * we need to add it as a duplicate to this entry
 271          * for future references */
 272         list_for_each_entry(dqp, &entry->duplicates, list) {
 273                 if (qpn == pqp->qpn)
 274                         return 0; /* qp is already duplicated */
 275         }
 276
 277         /* add the qp as a duplicate on this index */
 278         dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
 279         if (!dqp)
 280                 return -ENOMEM;
 281         dqp->qpn = qpn;
 282         list_add_tail(&dqp->list, &entry->duplicates);
 283
 284         return 0;
 285 }
 286
 287 /* Check whether a qpn is a duplicate on steering entry
 288  * If so, it should not be removed from mgm */
 289 static bool check_duplicate_entry(struct mlx4_dev *dev, u8 port,
 290                                   enum mlx4_steer_type steer,
 291                                   unsigned int index, u32 qpn)
 292 {
 293         struct mlx4_steer *s_steer;
 294         struct mlx4_steer_index *tmp_entry, *entry = NULL;
 295         struct mlx4_promisc_qp *dqp, *tmp_dqp;
 296
 297         s_steer = &mlx4_priv(dev)->steer[port - 1];
 298
 299         /* if qp is not promisc, it cannot be duplicated */
 300         if (!get_promisc_qp(dev, port, steer, qpn))
 301                 return false;
 302
 303         /* The qp is promisc qp so it is a duplicate on this index
 304          * Find the index entry, and remove the duplicate */
 305         list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
 306                 if (tmp_entry->index == index) {
 307                         entry = tmp_entry;
 308                         break;
 309                 }
 310         }
 311         if (unlikely(!entry)) {
 312                 mlx4_warn(dev, "Steering entry for index %x is not registered\n", index);
 313                 return false;
 314         }
 315         list_for_each_entry_safe(dqp, tmp_dqp, &entry->duplicates, list) {
 316                 if (dqp->qpn == qpn) {
 317                         list_del(&dqp->list);
 318                         kfree(dqp);
 319                 }
 320         }
 321         return true;
 322 }
 323
 324 /* I a steering entry contains only promisc QPs, it can be removed. */
 325 static bool can_remove_steering_entry(struct mlx4_dev *dev, u8 port,
 326                                       enum mlx4_steer_type steer,
 327                                       unsigned int index, u32 tqpn)
 328 {
 329         struct mlx4_steer *s_steer;
 330         struct mlx4_cmd_mailbox *mailbox;
 331         struct mlx4_mgm *mgm;
 332         struct mlx4_steer_index *entry = NULL, *tmp_entry;
 333         u32 qpn;
 334         u32 members_count;
 335         bool ret = false;
 336         int i;
 337
 338         s_steer = &mlx4_priv(dev)->steer[port - 1];
 339
 340         mailbox = mlx4_alloc_cmd_mailbox(dev);
 341         if (IS_ERR(mailbox))
 342                 return false;
 343         mgm = mailbox->buf;
 344
 345         if (mlx4_READ_ENTRY(dev, index, mailbox))
 346                 goto out;
 347         members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
 348         for (i = 0;  i < members_count; i++) {
 349                 qpn = be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK;
 350                 if (!get_promisc_qp(dev, port, steer, qpn) && qpn != tqpn) {
 351                         /* the qp is not promisc, the entry can't be removed */
 352                         goto out;
 353                 }
 354         }
 355          /* All the qps currently registered for this entry are promiscuous,
 356           * Checking for duplicates */
 357         ret = true;
 358         list_for_each_entry_safe(entry, tmp_entry, &s_steer->steer_entries[steer], list) {
 359                 if (entry->index == index) {
 360                         if (list_empty(&entry->duplicates)) {
 361                                 list_del(&entry->list);
 362                                 kfree(entry);
 363                         } else {
 364                                 /* This entry contains duplicates so it shouldn't be removed */
 365                                 ret = false;
 366                                 goto out;
 367                         }
 368                 }
 369         }
 370
 371 out:
 372         mlx4_free_cmd_mailbox(dev, mailbox);
 373         return ret;
 374 }
 375
 376 static int add_promisc_qp(struct mlx4_dev *dev, u8 port,
 377                           enum mlx4_steer_type steer, u32 qpn)
 378 {
 379         struct mlx4_steer *s_steer;
 380         struct mlx4_cmd_mailbox *mailbox;
 381         struct mlx4_mgm *mgm;
 382         struct mlx4_steer_index *entry;
 383         struct mlx4_promisc_qp *pqp;
 384         struct mlx4_promisc_qp *dqp;
 385         u32 members_count;
 386         u32 prot;
 387         int i;
 388         bool found;
 389         int err;
 390         struct mlx4_priv *priv = mlx4_priv(dev);
 391
 392         s_steer = &mlx4_priv(dev)->steer[port - 1];
 393
 394         mutex_lock(&priv->mcg_table.mutex);
 395
 396         if (get_promisc_qp(dev, port, steer, qpn)) {
 397                 err = 0;  /* Noting to do, already exists */
 398                 goto out_mutex;
 399         }
 400
 401         pqp = kmalloc(sizeof *pqp, GFP_KERNEL);
 402         if (!pqp) {
 403                 err = -ENOMEM;
 404                 goto out_mutex;
 405         }
 406         pqp->qpn = qpn;
 407
 408         mailbox = mlx4_alloc_cmd_mailbox(dev);
 409         if (IS_ERR(mailbox)) {
 410                 err = -ENOMEM;
 411                 goto out_alloc;
 412         }
 413         mgm = mailbox->buf;
 414
 415         /* the promisc qp needs to be added for each one of the steering
 416          * entries, if it already exists, needs to be added as a duplicate
 417          * for this entry */
 418         list_for_each_entry(entry, &s_steer->steer_entries[steer], list) {
 419                 err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
 420                 if (err)
 421                         goto out_mailbox;
 422
 423                 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
 424                 prot = be32_to_cpu(mgm->members_count) >> 30;
 425                 found = false;
 426                 for (i = 0; i < members_count; i++) {
 427                         if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qpn) {
 428                                 /* Entry already exists, add to duplicates */
 429                                 dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
 430                                 if (!dqp) {
 431                                         err = -ENOMEM;
 432                                         goto out_mailbox;
 433                                 }
 434                                 dqp->qpn = qpn;
 435                                 list_add_tail(&dqp->list, &entry->duplicates);
 436                                 found = true;
 437                         }
 438                 }
 439                 if (!found) {
 440                         /* Need to add the qpn to mgm */
 441                         if (members_count == dev->caps.num_qp_per_mgm) {
 442                                 /* entry is full */
 443                                 err = -ENOMEM;
 444                                 goto out_mailbox;
 445                         }
 446                         mgm->qp[members_count++] = cpu_to_be32(qpn & MGM_QPN_MASK);
 447                         mgm->members_count = cpu_to_be32(members_count | (prot << 30));
 448                         err = mlx4_WRITE_ENTRY(dev, entry->index, mailbox);
 449                         if (err)
 450                                 goto out_mailbox;
 451                 }
 452         }
 453
 454         /* add the new qpn to list of promisc qps */
 455         list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
 456         /* now need to add all the promisc qps to default entry */
 457         memset(mgm, 0, sizeof *mgm);
 458         members_count = 0;
 459         list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
 460                 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
 461         mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
 462
 463         err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
 464         if (err)
 465                 goto out_list;
 466
 467         mlx4_free_cmd_mailbox(dev, mailbox);
 468         mutex_unlock(&priv->mcg_table.mutex);
 469         return 0;
 470
 471 out_list:
 472         list_del(&pqp->list);
 473 out_mailbox:
 474         mlx4_free_cmd_mailbox(dev, mailbox);
 475 out_alloc:
 476         kfree(pqp);
 477 out_mutex:
 478         mutex_unlock(&priv->mcg_table.mutex);
 479         return err;
 480 }
 481
 482 static int remove_promisc_qp(struct mlx4_dev *dev, u8 port,
 483                              enum mlx4_steer_type steer, u32 qpn)
 484 {
 485         struct mlx4_priv *priv = mlx4_priv(dev);
 486         struct mlx4_steer *s_steer;
 487         struct mlx4_cmd_mailbox *mailbox;
 488         struct mlx4_mgm *mgm;
 489         struct mlx4_steer_index *entry;
 490         struct mlx4_promisc_qp *pqp;
 491         struct mlx4_promisc_qp *dqp;
 492         u32 members_count;
 493         bool found;
 494         bool back_to_list = false;
 495         int loc, i;
 496         int err;
 497
 498         s_steer = &mlx4_priv(dev)->steer[port - 1];
 499         mutex_lock(&priv->mcg_table.mutex);
 500
 501         pqp = get_promisc_qp(dev, port, steer, qpn);
 502         if (unlikely(!pqp)) {
 503                 mlx4_warn(dev, "QP %x is not promiscuous QP\n", qpn);
 504                 /* nothing to do */
 505                 err = 0;
 506                 goto out_mutex;
 507         }
 508
 509         /*remove from list of promisc qps */
 510         list_del(&pqp->list);
 511
 512         /* set the default entry not to include the removed one */
 513         mailbox = mlx4_alloc_cmd_mailbox(dev);
 514         if (IS_ERR(mailbox)) {
 515                 err = -ENOMEM;
 516                 back_to_list = true;
 517                 goto out_list;
 518         }
 519         mgm = mailbox->buf;
 520         memset(mgm, 0, sizeof *mgm);
 521         members_count = 0;
 522         list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
 523                 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
 524         mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
 525
 526         err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
 527         if (err)
 528                 goto out_mailbox;
 529
 530         /* remove the qp from all the steering entries*/
 531         list_for_each_entry(entry, &s_steer->steer_entries[steer], list) {
 532                 found = false;
 533                 list_for_each_entry(dqp, &entry->duplicates, list) {
 534                         if (dqp->qpn == qpn) {
 535                                 found = true;
 536                                 break;
 537                         }
 538                 }
 539                 if (found) {
 540                         /* a duplicate, no need to change the mgm,
 541                          * only update the duplicates list */
 542                         list_del(&dqp->list);
 543                         kfree(dqp);
 544                 } else {
 545                         err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
 546                                 if (err)
 547                                         goto out_mailbox;
 548                         members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
 549                         for (loc = -1, i = 0; i < members_count; ++i)
 550                                 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qpn)
 551                                         loc = i;
 552
 553                         mgm->members_count = cpu_to_be32(--members_count |
 554                                                          (MLX4_PROT_ETH << 30));
 555                         mgm->qp[loc] = mgm->qp[i - 1];
 556                         mgm->qp[i - 1] = 0;
 557
 558                         err = mlx4_WRITE_ENTRY(dev, entry->index, mailbox);
 559                                 if (err)
 560                                         goto out_mailbox;
 561                 }
 562
 563         }
 564
 565 out_mailbox:
 566         mlx4_free_cmd_mailbox(dev, mailbox);
 567 out_list:
 568         if (back_to_list)
 569                 list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
 570         else
 571                 kfree(pqp);
 572 out_mutex:
 573         mutex_unlock(&priv->mcg_table.mutex);
 574         return err;
 575 }
 576
 577 /*
 578  * Caller must hold MCG table semaphore.  gid and mgm parameters must
 579  * be properly aligned for command interface.
 580  *
 581  *  Returns 0 unless a firmware command error occurs.
 582  *
 583  * If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
 584  * and *mgm holds MGM entry.
 585  *
 586  * if GID is found in AMGM, *index = index in AMGM, *prev = index of
 587  * previous entry in hash chain and *mgm holds AMGM entry.
 588  *
 589  * If no AMGM exists for given gid, *index = -1, *prev = index of last
 590  * entry in hash chain and *mgm holds end of hash chain.
 591  */
 592 static int find_entry(struct mlx4_dev *dev, u8 port,
 593                       u8 *gid, enum mlx4_protocol prot,
 594                       struct mlx4_cmd_mailbox *mgm_mailbox,
 595                       int *prev, int *index)
 596 {
 597         struct mlx4_cmd_mailbox *mailbox;
 598         struct mlx4_mgm *mgm = mgm_mailbox->buf;
 599         u8 *mgid;
 600         int err;
 601         u16 hash;
 602         u8 op_mod = (prot == MLX4_PROT_ETH) ?
 603                 !!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) : 0;
 604
 605         mailbox = mlx4_alloc_cmd_mailbox(dev);
 606         if (IS_ERR(mailbox))
 607                 return -ENOMEM;
 608         mgid = mailbox->buf;
 609
 610         memcpy(mgid, gid, 16);
 611
 612         err = mlx4_GID_HASH(dev, mailbox, &hash, op_mod);
 613         mlx4_free_cmd_mailbox(dev, mailbox);
 614         if (err)
 615                 return err;
 616
 617         if (0)
 618                 mlx4_dbg(dev, "Hash for %pI6 is %04x\n", gid, hash);
 619
 620         *index = hash;
 621         *prev  = -1;
 622
 623         do {
 624                 err = mlx4_READ_ENTRY(dev, *index, mgm_mailbox);
 625                 if (err)
 626                         return err;
 627
 628                 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
 629                         if (*index != hash) {
 630                                 mlx4_err(dev, "Found zero MGID in AMGM.\n");
 631                                 err = -EINVAL;
 632                         }
 633                         return err;
 634                 }
 635
 636                 if (!memcmp(mgm->gid, gid, 16) &&
 637                     be32_to_cpu(mgm->members_count) >> 30 == prot)
 638                         return err;
 639
 640                 *prev = *index;
 641                 *index = be32_to_cpu(mgm->next_gid_index) >> 6;
 642         } while (*index);
 643
 644         *index = -1;
 645         return err;
 646 }
 647
 648 static const u8 __promisc_mode[] = {
 649         [MLX4_FS_REGULAR]   = 0x0,
 650         [MLX4_FS_ALL_DEFAULT] = 0x1,
 651         [MLX4_FS_MC_DEFAULT] = 0x3,
 652         [MLX4_FS_UC_SNIFFER] = 0x4,
 653         [MLX4_FS_MC_SNIFFER] = 0x5,
 654 };
 655
 656 int mlx4_map_sw_to_hw_steering_mode(struct mlx4_dev *dev,
 657                                     enum mlx4_net_trans_promisc_mode flow_type)
 658 {
 659         if (flow_type >= MLX4_FS_MODE_NUM || flow_type < 0) {
 660                 mlx4_err(dev, "Invalid flow type. type = %d\n", flow_type);
 661                 return -EINVAL;
 662         }
 663         return __promisc_mode[flow_type];
 664 }
 665 EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_mode);
 666
 667 static void trans_rule_ctrl_to_hw(struct mlx4_net_trans_rule *ctrl,
 668                                   struct mlx4_net_trans_rule_hw_ctrl *hw)
 669 {
 670         u8 flags = 0;
 671
 672         flags = ctrl->queue_mode == MLX4_NET_TRANS_Q_LIFO ? 1 : 0;
 673         flags |= ctrl->exclusive ? (1 << 2) : 0;
 674         flags |= ctrl->allow_loopback ? (1 << 3) : 0;
 675
 676         hw->flags = flags;
 677         hw->type = __promisc_mode[ctrl->promisc_mode];
 678         hw->prio = cpu_to_be16(ctrl->priority);
 679         hw->port = ctrl->port;
 680         hw->qpn = cpu_to_be32(ctrl->qpn);
 681 }
 682
 683 const u16 __sw_id_hw[] = {
 684         [MLX4_NET_TRANS_RULE_ID_ETH]     = 0xE001,
 685         [MLX4_NET_TRANS_RULE_ID_IB]      = 0xE005,
 686         [MLX4_NET_TRANS_RULE_ID_IPV6]    = 0xE003,
 687         [MLX4_NET_TRANS_RULE_ID_IPV4]    = 0xE002,
 688         [MLX4_NET_TRANS_RULE_ID_TCP]     = 0xE004,
 689         [MLX4_NET_TRANS_RULE_ID_UDP]     = 0xE006
 690 };
 691
 692 int mlx4_map_sw_to_hw_steering_id(struct mlx4_dev *dev,
 693                                   enum mlx4_net_trans_rule_id id)
 694 {
 695         if (id >= MLX4_NET_TRANS_RULE_NUM || id < 0) {
 696                 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
 697                 return -EINVAL;
 698         }
 699         return __sw_id_hw[id];
 700 }
 701 EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_id);
 702
 703 static const int __rule_hw_sz[] = {
 704         [MLX4_NET_TRANS_RULE_ID_ETH] =
 705                 sizeof(struct mlx4_net_trans_rule_hw_eth),
 706         [MLX4_NET_TRANS_RULE_ID_IB] =
 707                 sizeof(struct mlx4_net_trans_rule_hw_ib),
 708         [MLX4_NET_TRANS_RULE_ID_IPV6] = 0,
 709         [MLX4_NET_TRANS_RULE_ID_IPV4] =
 710                 sizeof(struct mlx4_net_trans_rule_hw_ipv4),
 711         [MLX4_NET_TRANS_RULE_ID_TCP] =
 712                 sizeof(struct mlx4_net_trans_rule_hw_tcp_udp),
 713         [MLX4_NET_TRANS_RULE_ID_UDP] =
 714                 sizeof(struct mlx4_net_trans_rule_hw_tcp_udp)
 715 };
 716
 717 int mlx4_hw_rule_sz(struct mlx4_dev *dev,
 718                enum mlx4_net_trans_rule_id id)
 719 {
 720         if (id >= MLX4_NET_TRANS_RULE_NUM || id < 0) {
 721                 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
 722                 return -EINVAL;
 723         }
 724
 725         return __rule_hw_sz[id];
 726 }
 727 EXPORT_SYMBOL_GPL(mlx4_hw_rule_sz);
 728
 729 static int parse_trans_rule(struct mlx4_dev *dev, struct mlx4_spec_list *spec,
 730                             struct _rule_hw *rule_hw)
 731 {
 732         if (mlx4_hw_rule_sz(dev, spec->id) < 0)
 733                 return -EINVAL;
 734         memset(rule_hw, 0, mlx4_hw_rule_sz(dev, spec->id));
 735         rule_hw->id = cpu_to_be16(__sw_id_hw[spec->id]);
 736         rule_hw->size = mlx4_hw_rule_sz(dev, spec->id) >> 2;
 737
 738         switch (spec->id) {
 739         case MLX4_NET_TRANS_RULE_ID_ETH:
 740                 memcpy(rule_hw->eth.dst_mac, spec->eth.dst_mac, ETH_ALEN);
 741                 memcpy(rule_hw->eth.dst_mac_msk, spec->eth.dst_mac_msk,
 742                        ETH_ALEN);
 743                 memcpy(rule_hw->eth.src_mac, spec->eth.src_mac, ETH_ALEN);
 744                 memcpy(rule_hw->eth.src_mac_msk, spec->eth.src_mac_msk,
 745                        ETH_ALEN);
 746                 if (spec->eth.ether_type_enable) {
 747                         rule_hw->eth.ether_type_enable = 1;
 748                         rule_hw->eth.ether_type = spec->eth.ether_type;
 749                 }
 750                 rule_hw->eth.vlan_tag = spec->eth.vlan_id;
 751                 rule_hw->eth.vlan_tag_msk = spec->eth.vlan_id_msk;
 752                 break;
 753
 754         case MLX4_NET_TRANS_RULE_ID_IB:
 755                 rule_hw->ib.l3_qpn = spec->ib.l3_qpn;
 756                 rule_hw->ib.qpn_mask = spec->ib.qpn_msk;
 757                 memcpy(&rule_hw->ib.dst_gid, &spec->ib.dst_gid, 16);
 758                 memcpy(&rule_hw->ib.dst_gid_msk, &spec->ib.dst_gid_msk, 16);
 759                 break;
 760
 761         case MLX4_NET_TRANS_RULE_ID_IPV6:
 762                 return -EOPNOTSUPP;
 763
 764         case MLX4_NET_TRANS_RULE_ID_IPV4:
 765                 rule_hw->ipv4.src_ip = spec->ipv4.src_ip;
 766                 rule_hw->ipv4.src_ip_msk = spec->ipv4.src_ip_msk;
 767                 rule_hw->ipv4.dst_ip = spec->ipv4.dst_ip;
 768                 rule_hw->ipv4.dst_ip_msk = spec->ipv4.dst_ip_msk;
 769                 break;
 770
 771         case MLX4_NET_TRANS_RULE_ID_TCP:
 772         case MLX4_NET_TRANS_RULE_ID_UDP:
 773                 rule_hw->tcp_udp.dst_port = spec->tcp_udp.dst_port;
 774                 rule_hw->tcp_udp.dst_port_msk = spec->tcp_udp.dst_port_msk;
 775                 rule_hw->tcp_udp.src_port = spec->tcp_udp.src_port;
 776                 rule_hw->tcp_udp.src_port_msk = spec->tcp_udp.src_port_msk;
 777                 break;
 778
 779         default:
 780                 return -EINVAL;
 781         }
 782
 783         return __rule_hw_sz[spec->id];
 784 }
 785
 786 static void mlx4_err_rule(struct mlx4_dev *dev, char *str,
 787                           struct mlx4_net_trans_rule *rule)
 788 {
 789 #define BUF_SIZE 256
 790         struct mlx4_spec_list *cur;
 791         char buf[BUF_SIZE];
 792         int len = 0;
 793
 794         mlx4_err(dev, "%s", str);
 795         len += snprintf(buf + len, BUF_SIZE - len,
 796                         "port = %d prio = 0x%x qp = 0x%x ",
 797                         rule->port, rule->priority, rule->qpn);
 798
 799         list_for_each_entry(cur, &rule->list, list) {
 800                 switch (cur->id) {
 801                 case MLX4_NET_TRANS_RULE_ID_ETH:
 802                         len += snprintf(buf + len, BUF_SIZE - len,
 803                                         "dmac = %pM ", &cur->eth.dst_mac);
 804                         if (cur->eth.ether_type)
 805                                 len += snprintf(buf + len, BUF_SIZE - len,
 806                                                 "ethertype = 0x%x ",
 807                                                 be16_to_cpu(cur->eth.ether_type));
 808                         if (cur->eth.vlan_id)
 809                                 len += snprintf(buf + len, BUF_SIZE - len,
 810                                                 "vlan-id = %d ",
 811                                                 be16_to_cpu(cur->eth.vlan_id));
 812                         break;
 813
 814                 case MLX4_NET_TRANS_RULE_ID_IPV4:
 815                         if (cur->ipv4.src_ip)
 816                                 len += snprintf(buf + len, BUF_SIZE - len,
 817                                                 "src-ip = %pI4 ",
 818                                                 &cur->ipv4.src_ip);
 819                         if (cur->ipv4.dst_ip)
 820                                 len += snprintf(buf + len, BUF_SIZE - len,
 821                                                 "dst-ip = %pI4 ",
 822                                                 &cur->ipv4.dst_ip);
 823                         break;
 824
 825                 case MLX4_NET_TRANS_RULE_ID_TCP:
 826                 case MLX4_NET_TRANS_RULE_ID_UDP:
 827                         if (cur->tcp_udp.src_port)
 828                                 len += snprintf(buf + len, BUF_SIZE - len,
 829                                                 "src-port = %d ",
 830                                                 be16_to_cpu(cur->tcp_udp.src_port));
 831                         if (cur->tcp_udp.dst_port)
 832                                 len += snprintf(buf + len, BUF_SIZE - len,
 833                                                 "dst-port = %d ",
 834                                                 be16_to_cpu(cur->tcp_udp.dst_port));
 835                         break;
 836
 837                 case MLX4_NET_TRANS_RULE_ID_IB:
 838                         len += snprintf(buf + len, BUF_SIZE - len,
 839                                         "dst-gid = %pI6\n", cur->ib.dst_gid);
 840                         len += snprintf(buf + len, BUF_SIZE - len,
 841                                         "dst-gid-mask = %pI6\n",
 842                                         cur->ib.dst_gid_msk);
 843                         break;
 844
 845                 case MLX4_NET_TRANS_RULE_ID_IPV6:
 846                         break;
 847
 848                 default:
 849                         break;
 850                 }
 851         }
 852         len += snprintf(buf + len, BUF_SIZE - len, "\n");
 853         mlx4_err(dev, "%s", buf);
 854
 855         if (len >= BUF_SIZE)
 856                 mlx4_err(dev, "Network rule error message was truncated, print buffer is too small.\n");
 857 }
 858
 859 int mlx4_flow_attach(struct mlx4_dev *dev,
 860                      struct mlx4_net_trans_rule *rule, u64 *reg_id)
 861 {
 862         struct mlx4_cmd_mailbox *mailbox;
 863         struct mlx4_spec_list *cur;
 864         u32 size = 0;
 865         int ret;
 866
 867         mailbox = mlx4_alloc_cmd_mailbox(dev);
 868         if (IS_ERR(mailbox))
 869                 return PTR_ERR(mailbox);
 870
 871         memset(mailbox->buf, 0, sizeof(struct mlx4_net_trans_rule_hw_ctrl));
 872         trans_rule_ctrl_to_hw(rule, mailbox->buf);
 873
 874         size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
 875
 876         list_for_each_entry(cur, &rule->list, list) {
 877                 ret = parse_trans_rule(dev, cur, mailbox->buf + size);
 878                 if (ret < 0) {
 879                         mlx4_free_cmd_mailbox(dev, mailbox);
 880                         return -EINVAL;
 881                 }
 882                 size += ret;
 883         }
 884
 885         ret = mlx4_QP_FLOW_STEERING_ATTACH(dev, mailbox, size >> 2, reg_id);
 886         if (ret == -ENOMEM)
 887                 mlx4_err_rule(dev,
 888                               "mcg table is full. Fail to register network rule.\n",
 889                               rule);
 890         else if (ret)
 891                 mlx4_err_rule(dev, "Fail to register network rule.\n", rule);
 892
 893         mlx4_free_cmd_mailbox(dev, mailbox);
 894
 895         return ret;
 896 }
 897 EXPORT_SYMBOL_GPL(mlx4_flow_attach);
 898
 899 int mlx4_flow_detach(struct mlx4_dev *dev, u64 reg_id)
 900 {
 901         int err;
 902
 903         err = mlx4_QP_FLOW_STEERING_DETACH(dev, reg_id);
 904         if (err)
 905                 mlx4_err(dev, "Fail to detach network rule. registration id = 0x%llx\n",
 906                          reg_id);
 907         return err;
 908 }
 909 EXPORT_SYMBOL_GPL(mlx4_flow_detach);
 910
 911 int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
 912                           int block_mcast_loopback, enum mlx4_protocol prot,
 913                           enum mlx4_steer_type steer)
 914 {
 915         struct mlx4_priv *priv = mlx4_priv(dev);
 916         struct mlx4_cmd_mailbox *mailbox;
 917         struct mlx4_mgm *mgm;
 918         u32 members_count;
 919         int index, prev;
 920         int link = 0;
 921         int i;
 922         int err;
 923         u8 port = gid[5];
 924         u8 new_entry = 0;
 925
 926         mailbox = mlx4_alloc_cmd_mailbox(dev);
 927         if (IS_ERR(mailbox))
 928                 return PTR_ERR(mailbox);
 929         mgm = mailbox->buf;
 930
 931         mutex_lock(&priv->mcg_table.mutex);
 932         err = find_entry(dev, port, gid, prot,
 933                          mailbox, &prev, &index);
 934         if (err)
 935                 goto out;
 936
 937         if (index != -1) {
 938                 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
 939                         new_entry = 1;
 940                         memcpy(mgm->gid, gid, 16);
 941                 }
 942         } else {
 943                 link = 1;
 944
 945                 index = mlx4_bitmap_alloc(&priv->mcg_table.bitmap);
 946                 if (index == -1) {
 947                         mlx4_err(dev, "No AMGM entries left\n");
 948                         err = -ENOMEM;
 949                         goto out;
 950                 }
 951                 index += dev->caps.num_mgms;
 952
 953                 new_entry = 1;
 954                 memset(mgm, 0, sizeof *mgm);
 955                 memcpy(mgm->gid, gid, 16);
 956         }
 957
 958         members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
 959         if (members_count == dev->caps.num_qp_per_mgm) {
 960                 mlx4_err(dev, "MGM at index %x is full.\n", index);
 961                 err = -ENOMEM;
 962                 goto out;
 963         }
 964
 965         for (i = 0; i < members_count; ++i)
 966                 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
 967                         mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn);
 968                         err = 0;
 969                         goto out;
 970                 }
 971
 972         if (block_mcast_loopback)
 973                 mgm->qp[members_count++] = cpu_to_be32((qp->qpn & MGM_QPN_MASK) |
 974                                                        (1U << MGM_BLCK_LB_BIT));
 975         else
 976                 mgm->qp[members_count++] = cpu_to_be32(qp->qpn & MGM_QPN_MASK);
 977
 978         mgm->members_count = cpu_to_be32(members_count | (u32) prot << 30);
 979
 980         err = mlx4_WRITE_ENTRY(dev, index, mailbox);
 981         if (err)
 982                 goto out;
 983
 984         if (!link)
 985                 goto out;
 986
 987         err = mlx4_READ_ENTRY(dev, prev, mailbox);
 988         if (err)
 989                 goto out;
 990
 991         mgm->next_gid_index = cpu_to_be32(index << 6);
 992
 993         err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
 994         if (err)
 995                 goto out;
 996
 997 out:
 998         if (prot == MLX4_PROT_ETH) {
 999                 /* manage the steering entry for promisc mode */
1000                 if (new_entry)
1001                         new_steering_entry(dev, port, steer, index, qp->qpn);
1002                 else
1003                         existing_steering_entry(dev, port, steer,
1004                                                 index, qp->qpn);
1005         }
1006         if (err && link && index != -1) {
1007                 if (index < dev->caps.num_mgms)
1008                         mlx4_warn(dev, "Got AMGM index %d < %d",
1009                                   index, dev->caps.num_mgms);
1010                 else
1011                         mlx4_bitmap_free(&priv->mcg_table.bitmap,
1012                                          index - dev->caps.num_mgms);
1013         }
1014         mutex_unlock(&priv->mcg_table.mutex);
1015
1016         mlx4_free_cmd_mailbox(dev, mailbox);
1017         return err;
1018 }
1019
1020 int mlx4_qp_detach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1021                           enum mlx4_protocol prot, enum mlx4_steer_type steer)
1022 {
1023         struct mlx4_priv *priv = mlx4_priv(dev);
1024         struct mlx4_cmd_mailbox *mailbox;
1025         struct mlx4_mgm *mgm;
1026         u32 members_count;
1027         int prev, index;
1028         int i, loc;
1029         int err;
1030         u8 port = gid[5];
1031         bool removed_entry = false;
1032
1033         mailbox = mlx4_alloc_cmd_mailbox(dev);
1034         if (IS_ERR(mailbox))
1035                 return PTR_ERR(mailbox);
1036         mgm = mailbox->buf;
1037
1038         mutex_lock(&priv->mcg_table.mutex);
1039
1040         err = find_entry(dev, port, gid, prot,
1041                          mailbox, &prev, &index);
1042         if (err)
1043                 goto out;
1044
1045         if (index == -1) {
1046                 mlx4_err(dev, "MGID %pI6 not found\n", gid);
1047                 err = -EINVAL;
1048                 goto out;
1049         }
1050
1051         /* if this pq is also a promisc qp, it shouldn't be removed */
1052         if (prot == MLX4_PROT_ETH &&
1053             check_duplicate_entry(dev, port, steer, index, qp->qpn))
1054                 goto out;
1055
1056         members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
1057         for (loc = -1, i = 0; i < members_count; ++i)
1058                 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn)
1059                         loc = i;
1060
1061         if (loc == -1) {
1062                 mlx4_err(dev, "QP %06x not found in MGM\n", qp->qpn);
1063                 err = -EINVAL;
1064                 goto out;
1065         }
1066
1067
1068         mgm->members_count = cpu_to_be32(--members_count | (u32) prot << 30);
1069         mgm->qp[loc]       = mgm->qp[i - 1];
1070         mgm->qp[i - 1]     = 0;
1071
1072         if (prot == MLX4_PROT_ETH)
1073                 removed_entry = can_remove_steering_entry(dev, port, steer,
1074                                                                 index, qp->qpn);
1075         if (i != 1 && (prot != MLX4_PROT_ETH || !removed_entry)) {
1076                 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1077                 goto out;
1078         }
1079
1080         /* We are going to delete the entry, members count should be 0 */
1081         mgm->members_count = cpu_to_be32((u32) prot << 30);
1082
1083         if (prev == -1) {
1084                 /* Remove entry from MGM */
1085                 int amgm_index = be32_to_cpu(mgm->next_gid_index) >> 6;
1086                 if (amgm_index) {
1087                         err = mlx4_READ_ENTRY(dev, amgm_index, mailbox);
1088                         if (err)
1089                                 goto out;
1090                 } else
1091                         memset(mgm->gid, 0, 16);
1092
1093                 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1094                 if (err)
1095                         goto out;
1096
1097                 if (amgm_index) {
1098                         if (amgm_index < dev->caps.num_mgms)
1099                                 mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d",
1100                                           index, amgm_index, dev->caps.num_mgms);
1101                         else
1102                                 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1103                                                  amgm_index - dev->caps.num_mgms);
1104                 }
1105         } else {
1106                 /* Remove entry from AMGM */
1107                 int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
1108                 err = mlx4_READ_ENTRY(dev, prev, mailbox);
1109                 if (err)
1110                         goto out;
1111
1112                 mgm->next_gid_index = cpu_to_be32(cur_next_index << 6);
1113
1114                 err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
1115                 if (err)
1116                         goto out;
1117
1118                 if (index < dev->caps.num_mgms)
1119                         mlx4_warn(dev, "entry %d had next AMGM index %d < %d",
1120                                   prev, index, dev->caps.num_mgms);
1121                 else
1122                         mlx4_bitmap_free(&priv->mcg_table.bitmap,
1123                                          index - dev->caps.num_mgms);
1124         }
1125
1126 out:
1127         mutex_unlock(&priv->mcg_table.mutex);
1128
1129         mlx4_free_cmd_mailbox(dev, mailbox);
1130         return err;
1131 }
1132
1133 static int mlx4_QP_ATTACH(struct mlx4_dev *dev, struct mlx4_qp *qp,
1134                           u8 gid[16], u8 attach, u8 block_loopback,
1135                           enum mlx4_protocol prot)
1136 {
1137         struct mlx4_cmd_mailbox *mailbox;
1138         int err = 0;
1139         int qpn;
1140
1141         if (!mlx4_is_mfunc(dev))
1142                 return -EBADF;
1143
1144         mailbox = mlx4_alloc_cmd_mailbox(dev);
1145         if (IS_ERR(mailbox))
1146                 return PTR_ERR(mailbox);
1147
1148         memcpy(mailbox->buf, gid, 16);
1149         qpn = qp->qpn;
1150         qpn |= (prot << 28);
1151         if (attach && block_loopback)
1152                 qpn |= (1 << 31);
1153
1154         err = mlx4_cmd(dev, mailbox->dma, qpn, attach,
1155                        MLX4_CMD_QP_ATTACH, MLX4_CMD_TIME_CLASS_A,
1156                        MLX4_CMD_WRAPPED);
1157
1158         mlx4_free_cmd_mailbox(dev, mailbox);
1159         return err;
1160 }
1161
1162 int mlx4_trans_to_dmfs_attach(struct mlx4_dev *dev, struct mlx4_qp *qp,
1163                               u8 gid[16], u8 port,
1164                               int block_mcast_loopback,
1165                               enum mlx4_protocol prot, u64 *reg_id)
1166 {
1167                 struct mlx4_spec_list spec = { {NULL} };
1168                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
1169
1170                 struct mlx4_net_trans_rule rule = {
1171                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
1172                         .exclusive = 0,
1173                         .promisc_mode = MLX4_FS_REGULAR,
1174                         .priority = MLX4_DOMAIN_NIC,
1175                 };
1176
1177                 rule.allow_loopback = !block_mcast_loopback;
1178                 rule.port = port;
1179                 rule.qpn = qp->qpn;
1180                 INIT_LIST_HEAD(&rule.list);
1181
1182                 switch (prot) {
1183                 case MLX4_PROT_ETH:
1184                         spec.id = MLX4_NET_TRANS_RULE_ID_ETH;
1185                         memcpy(spec.eth.dst_mac, &gid[10], ETH_ALEN);
1186                         memcpy(spec.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
1187                         break;
1188
1189                 case MLX4_PROT_IB_IPV6:
1190                         spec.id = MLX4_NET_TRANS_RULE_ID_IB;
1191                         memcpy(spec.ib.dst_gid, gid, 16);
1192                         memset(&spec.ib.dst_gid_msk, 0xff, 16);
1193                         break;
1194                 default:
1195                         return -EINVAL;
1196                 }
1197                 list_add_tail(&spec.list, &rule.list);
1198
1199                 return mlx4_flow_attach(dev, &rule, reg_id);
1200 }
1201
1202 int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1203                           u8 port, int block_mcast_loopback,
1204                           enum mlx4_protocol prot, u64 *reg_id)
1205 {
1206         switch (dev->caps.steering_mode) {
1207         case MLX4_STEERING_MODE_A0:
1208                 if (prot == MLX4_PROT_ETH)
1209                         return 0;
1210
1211         case MLX4_STEERING_MODE_B0:
1212                 if (prot == MLX4_PROT_ETH)
1213                         gid[7] |= (MLX4_MC_STEER << 1);
1214
1215                 if (mlx4_is_mfunc(dev))
1216                         return mlx4_QP_ATTACH(dev, qp, gid, 1,
1217                                               block_mcast_loopback, prot);
1218                 return mlx4_qp_attach_common(dev, qp, gid,
1219                                              block_mcast_loopback, prot,
1220                                              MLX4_MC_STEER);
1221
1222         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1223                 return mlx4_trans_to_dmfs_attach(dev, qp, gid, port,
1224                                                  block_mcast_loopback,
1225                                                  prot, reg_id);
1226         default:
1227                 return -EINVAL;
1228         }
1229 }
1230 EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
1231
1232 int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1233                           enum mlx4_protocol prot, u64 reg_id)
1234 {
1235         switch (dev->caps.steering_mode) {
1236         case MLX4_STEERING_MODE_A0:
1237                 if (prot == MLX4_PROT_ETH)
1238                         return 0;
1239
1240         case MLX4_STEERING_MODE_B0:
1241                 if (prot == MLX4_PROT_ETH)
1242                         gid[7] |= (MLX4_MC_STEER << 1);
1243
1244                 if (mlx4_is_mfunc(dev))
1245                         return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
1246
1247                 return mlx4_qp_detach_common(dev, qp, gid, prot,
1248                                              MLX4_MC_STEER);
1249
1250         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1251                 return mlx4_flow_detach(dev, reg_id);
1252
1253         default:
1254                 return -EINVAL;
1255         }
1256 }
1257 EXPORT_SYMBOL_GPL(mlx4_multicast_detach);
1258
1259 int mlx4_flow_steer_promisc_add(struct mlx4_dev *dev, u8 port,
1260                                 u32 qpn, enum mlx4_net_trans_promisc_mode mode)
1261 {
1262         struct mlx4_net_trans_rule rule;
1263         u64 *regid_p;
1264
1265         switch (mode) {
1266         case MLX4_FS_ALL_DEFAULT:
1267                 regid_p = &dev->regid_promisc_array[port];
1268                 break;
1269         case MLX4_FS_MC_DEFAULT:
1270                 regid_p = &dev->regid_allmulti_array[port];
1271                 break;
1272         default:
1273                 return -1;
1274         }
1275
1276         if (*regid_p != 0)
1277                 return -1;
1278
1279         rule.promisc_mode = mode;
1280         rule.port = port;
1281         rule.qpn = qpn;
1282         INIT_LIST_HEAD(&rule.list);
1283         mlx4_err(dev, "going promisc on %x\n", port);
1284
1285         return  mlx4_flow_attach(dev, &rule, regid_p);
1286 }
1287 EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_add);
1288
1289 int mlx4_flow_steer_promisc_remove(struct mlx4_dev *dev, u8 port,
1290                                    enum mlx4_net_trans_promisc_mode mode)
1291 {
1292         int ret;
1293         u64 *regid_p;
1294
1295         switch (mode) {
1296         case MLX4_FS_ALL_DEFAULT:
1297                 regid_p = &dev->regid_promisc_array[port];
1298                 break;
1299         case MLX4_FS_MC_DEFAULT:
1300                 regid_p = &dev->regid_allmulti_array[port];
1301                 break;
1302         default:
1303                 return -1;
1304         }
1305
1306         if (*regid_p == 0)
1307                 return -1;
1308
1309         ret =  mlx4_flow_detach(dev, *regid_p);
1310         if (ret == 0)
1311                 *regid_p = 0;
1312
1313         return ret;
1314 }
1315 EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_remove);
1316
1317 int mlx4_unicast_attach(struct mlx4_dev *dev,
1318                         struct mlx4_qp *qp, u8 gid[16],
1319                         int block_mcast_loopback, enum mlx4_protocol prot)
1320 {
1321         if (prot == MLX4_PROT_ETH)
1322                 gid[7] |= (MLX4_UC_STEER << 1);
1323
1324         if (mlx4_is_mfunc(dev))
1325                 return mlx4_QP_ATTACH(dev, qp, gid, 1,
1326                                         block_mcast_loopback, prot);
1327
1328         return mlx4_qp_attach_common(dev, qp, gid, block_mcast_loopback,
1329                                         prot, MLX4_UC_STEER);
1330 }
1331 EXPORT_SYMBOL_GPL(mlx4_unicast_attach);
1332
1333 int mlx4_unicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp,
1334                                u8 gid[16], enum mlx4_protocol prot)
1335 {
1336         if (prot == MLX4_PROT_ETH)
1337                 gid[7] |= (MLX4_UC_STEER << 1);
1338
1339         if (mlx4_is_mfunc(dev))
1340                 return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
1341
1342         return mlx4_qp_detach_common(dev, qp, gid, prot, MLX4_UC_STEER);
1343 }
1344 EXPORT_SYMBOL_GPL(mlx4_unicast_detach);
1345
1346 int mlx4_PROMISC_wrapper(struct mlx4_dev *dev, int slave,
1347                          struct mlx4_vhcr *vhcr,
1348                          struct mlx4_cmd_mailbox *inbox,
1349                          struct mlx4_cmd_mailbox *outbox,
1350                          struct mlx4_cmd_info *cmd)
1351 {
1352         u32 qpn = (u32) vhcr->in_param & 0xffffffff;
1353         u8 port = vhcr->in_param >> 62;
1354         enum mlx4_steer_type steer = vhcr->in_modifier;
1355
1356         /* Promiscuous unicast is not allowed in mfunc */
1357         if (mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)
1358                 return 0;
1359
1360         if (vhcr->op_modifier)
1361                 return add_promisc_qp(dev, port, steer, qpn);
1362         else
1363                 return remove_promisc_qp(dev, port, steer, qpn);
1364 }
1365
1366 static int mlx4_PROMISC(struct mlx4_dev *dev, u32 qpn,
1367                         enum mlx4_steer_type steer, u8 add, u8 port)
1368 {
1369         return mlx4_cmd(dev, (u64) qpn | (u64) port << 62, (u32) steer, add,
1370                         MLX4_CMD_PROMISC, MLX4_CMD_TIME_CLASS_A,
1371                         MLX4_CMD_WRAPPED);
1372 }
1373
1374 int mlx4_multicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1375 {
1376         if (mlx4_is_mfunc(dev))
1377                 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 1, port);
1378
1379         return add_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
1380 }
1381 EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_add);
1382
1383 int mlx4_multicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1384 {
1385         if (mlx4_is_mfunc(dev))
1386                 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 0, port);
1387
1388         return remove_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
1389 }
1390 EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_remove);
1391
1392 int mlx4_unicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1393 {
1394         if (mlx4_is_mfunc(dev))
1395                 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 1, port);
1396
1397         return add_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
1398 }
1399 EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_add);
1400
1401 int mlx4_unicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1402 {
1403         if (mlx4_is_mfunc(dev))
1404                 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 0, port);
1405
1406         return remove_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
1407 }
1408 EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_remove);
1409
1410 int mlx4_init_mcg_table(struct mlx4_dev *dev)
1411 {
1412         struct mlx4_priv *priv = mlx4_priv(dev);
1413         int err;
1414
1415         /* No need for mcg_table when fw managed the mcg table*/
1416         if (dev->caps.steering_mode ==
1417             MLX4_STEERING_MODE_DEVICE_MANAGED)
1418                 return 0;
1419         err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms,
1420                                dev->caps.num_amgms - 1, 0, 0);
1421         if (err)
1422                 return err;
1423
1424         mutex_init(&priv->mcg_table.mutex);
1425
1426         return 0;
1427 }
1428
1429 void mlx4_cleanup_mcg_table(struct mlx4_dev *dev)
1430 {
1431         if (dev->caps.steering_mode !=
1432             MLX4_STEERING_MODE_DEVICE_MANAGED)
1433                 mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap);
1434 }