drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c

   1 /*
   2  * Copyright (c) 2015, 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/mlx5/driver.h>
  34 #include <linux/mlx5/device.h>
  35 #include <linux/mlx5/mlx5_ifc.h>
  36
  37 #include "fs_core.h"
  38 #include "fs_cmd.h"
  39 #include "mlx5_core.h"
  40 #include "eswitch.h"
  41
  42 int mlx5_cmd_update_root_ft(struct mlx5_core_dev *dev,
  43                             struct mlx5_flow_table *ft, u32 underlay_qpn,
  44                             bool disconnect)
  45 {
  46         u32 in[MLX5_ST_SZ_DW(set_flow_table_root_in)]   = {0};
  47         u32 out[MLX5_ST_SZ_DW(set_flow_table_root_out)] = {0};
  48
  49         if ((MLX5_CAP_GEN(dev, port_type) == MLX5_CAP_PORT_TYPE_IB) &&
  50             underlay_qpn == 0)
  51                 return 0;
  52
  53         MLX5_SET(set_flow_table_root_in, in, opcode,
  54                  MLX5_CMD_OP_SET_FLOW_TABLE_ROOT);
  55         MLX5_SET(set_flow_table_root_in, in, table_type, ft->type);
  56
  57         if (disconnect) {
  58                 MLX5_SET(set_flow_table_root_in, in, op_mod, 1);
  59                 MLX5_SET(set_flow_table_root_in, in, table_id, 0);
  60         } else {
  61                 MLX5_SET(set_flow_table_root_in, in, op_mod, 0);
  62                 MLX5_SET(set_flow_table_root_in, in, table_id, ft->id);
  63         }
  64
  65         MLX5_SET(set_flow_table_root_in, in, underlay_qpn, underlay_qpn);
  66         if (ft->vport) {
  67                 MLX5_SET(set_flow_table_root_in, in, vport_number, ft->vport);
  68                 MLX5_SET(set_flow_table_root_in, in, other_vport, 1);
  69         }
  70
  71         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
  72 }
  73
  74 int mlx5_cmd_create_flow_table(struct mlx5_core_dev *dev,
  75                                u16 vport,
  76                                enum fs_flow_table_op_mod op_mod,
  77                                enum fs_flow_table_type type, unsigned int level,
  78                                unsigned int log_size, struct mlx5_flow_table
  79                                *next_ft, unsigned int *table_id, u32 flags)
  80 {
  81         int en_encap_decap = !!(flags & MLX5_FLOW_TABLE_TUNNEL_EN);
  82         u32 out[MLX5_ST_SZ_DW(create_flow_table_out)] = {0};
  83         u32 in[MLX5_ST_SZ_DW(create_flow_table_in)]   = {0};
  84         int err;
  85
  86         MLX5_SET(create_flow_table_in, in, opcode,
  87                  MLX5_CMD_OP_CREATE_FLOW_TABLE);
  88
  89         MLX5_SET(create_flow_table_in, in, table_type, type);
  90         MLX5_SET(create_flow_table_in, in, flow_table_context.level, level);
  91         MLX5_SET(create_flow_table_in, in, flow_table_context.log_size, log_size);
  92         if (vport) {
  93                 MLX5_SET(create_flow_table_in, in, vport_number, vport);
  94                 MLX5_SET(create_flow_table_in, in, other_vport, 1);
  95         }
  96
  97         MLX5_SET(create_flow_table_in, in, flow_table_context.decap_en,
  98                  en_encap_decap);
  99         MLX5_SET(create_flow_table_in, in, flow_table_context.encap_en,
 100                  en_encap_decap);
 101
 102         switch (op_mod) {
 103         case FS_FT_OP_MOD_NORMAL:
 104                 if (next_ft) {
 105                         MLX5_SET(create_flow_table_in, in,
 106                                  flow_table_context.table_miss_action, 1);
 107                         MLX5_SET(create_flow_table_in, in,
 108                                  flow_table_context.table_miss_id, next_ft->id);
 109                 }
 110                 break;
 111
 112         case FS_FT_OP_MOD_LAG_DEMUX:
 113                 MLX5_SET(create_flow_table_in, in, op_mod, 0x1);
 114                 if (next_ft)
 115                         MLX5_SET(create_flow_table_in, in,
 116                                  flow_table_context.lag_master_next_table_id,
 117                                  next_ft->id);
 118                 break;
 119         }
 120
 121         err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 122         if (!err)
 123                 *table_id = MLX5_GET(create_flow_table_out, out,
 124                                      table_id);
 125         return err;
 126 }
 127
 128 int mlx5_cmd_destroy_flow_table(struct mlx5_core_dev *dev,
 129                                 struct mlx5_flow_table *ft)
 130 {
 131         u32 in[MLX5_ST_SZ_DW(destroy_flow_table_in)]   = {0};
 132         u32 out[MLX5_ST_SZ_DW(destroy_flow_table_out)] = {0};
 133
 134         MLX5_SET(destroy_flow_table_in, in, opcode,
 135                  MLX5_CMD_OP_DESTROY_FLOW_TABLE);
 136         MLX5_SET(destroy_flow_table_in, in, table_type, ft->type);
 137         MLX5_SET(destroy_flow_table_in, in, table_id, ft->id);
 138         if (ft->vport) {
 139                 MLX5_SET(destroy_flow_table_in, in, vport_number, ft->vport);
 140                 MLX5_SET(destroy_flow_table_in, in, other_vport, 1);
 141         }
 142
 143         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 144 }
 145
 146 int mlx5_cmd_modify_flow_table(struct mlx5_core_dev *dev,
 147                                struct mlx5_flow_table *ft,
 148                                struct mlx5_flow_table *next_ft)
 149 {
 150         u32 in[MLX5_ST_SZ_DW(modify_flow_table_in)]   = {0};
 151         u32 out[MLX5_ST_SZ_DW(modify_flow_table_out)] = {0};
 152
 153         MLX5_SET(modify_flow_table_in, in, opcode,
 154                  MLX5_CMD_OP_MODIFY_FLOW_TABLE);
 155         MLX5_SET(modify_flow_table_in, in, table_type, ft->type);
 156         MLX5_SET(modify_flow_table_in, in, table_id, ft->id);
 157
 158         if (ft->op_mod == FS_FT_OP_MOD_LAG_DEMUX) {
 159                 MLX5_SET(modify_flow_table_in, in, modify_field_select,
 160                          MLX5_MODIFY_FLOW_TABLE_LAG_NEXT_TABLE_ID);
 161                 if (next_ft) {
 162                         MLX5_SET(modify_flow_table_in, in,
 163                                  flow_table_context.lag_master_next_table_id, next_ft->id);
 164                 } else {
 165                         MLX5_SET(modify_flow_table_in, in,
 166                                  flow_table_context.lag_master_next_table_id, 0);
 167                 }
 168         } else {
 169                 if (ft->vport) {
 170                         MLX5_SET(modify_flow_table_in, in, vport_number,
 171                                  ft->vport);
 172                         MLX5_SET(modify_flow_table_in, in, other_vport, 1);
 173                 }
 174                 MLX5_SET(modify_flow_table_in, in, modify_field_select,
 175                          MLX5_MODIFY_FLOW_TABLE_MISS_TABLE_ID);
 176                 if (next_ft) {
 177                         MLX5_SET(modify_flow_table_in, in,
 178                                  flow_table_context.table_miss_action, 1);
 179                         MLX5_SET(modify_flow_table_in, in,
 180                                  flow_table_context.table_miss_id,
 181                                  next_ft->id);
 182                 } else {
 183                         MLX5_SET(modify_flow_table_in, in,
 184                                  flow_table_context.table_miss_action, 0);
 185                 }
 186         }
 187
 188         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 189 }
 190
 191 int mlx5_cmd_create_flow_group(struct mlx5_core_dev *dev,
 192                                struct mlx5_flow_table *ft,
 193                                u32 *in,
 194                                unsigned int *group_id)
 195 {
 196         u32 out[MLX5_ST_SZ_DW(create_flow_group_out)] = {0};
 197         int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
 198         int err;
 199
 200         MLX5_SET(create_flow_group_in, in, opcode,
 201                  MLX5_CMD_OP_CREATE_FLOW_GROUP);
 202         MLX5_SET(create_flow_group_in, in, table_type, ft->type);
 203         MLX5_SET(create_flow_group_in, in, table_id, ft->id);
 204         if (ft->vport) {
 205                 MLX5_SET(create_flow_group_in, in, vport_number, ft->vport);
 206                 MLX5_SET(create_flow_group_in, in, other_vport, 1);
 207         }
 208
 209         err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
 210         if (!err)
 211                 *group_id = MLX5_GET(create_flow_group_out, out,
 212                                      group_id);
 213         return err;
 214 }
 215
 216 int mlx5_cmd_destroy_flow_group(struct mlx5_core_dev *dev,
 217                                 struct mlx5_flow_table *ft,
 218                                 unsigned int group_id)
 219 {
 220         u32 out[MLX5_ST_SZ_DW(destroy_flow_group_out)] = {0};
 221         u32 in[MLX5_ST_SZ_DW(destroy_flow_group_in)]   = {0};
 222
 223         MLX5_SET(destroy_flow_group_in, in, opcode,
 224                  MLX5_CMD_OP_DESTROY_FLOW_GROUP);
 225         MLX5_SET(destroy_flow_group_in, in, table_type, ft->type);
 226         MLX5_SET(destroy_flow_group_in, in, table_id, ft->id);
 227         MLX5_SET(destroy_flow_group_in, in, group_id, group_id);
 228         if (ft->vport) {
 229                 MLX5_SET(destroy_flow_group_in, in, vport_number, ft->vport);
 230                 MLX5_SET(destroy_flow_group_in, in, other_vport, 1);
 231         }
 232
 233         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 234 }
 235
 236 static int mlx5_cmd_set_fte(struct mlx5_core_dev *dev,
 237                             int opmod, int modify_mask,
 238                             struct mlx5_flow_table *ft,
 239                             unsigned group_id,
 240                             struct fs_fte *fte)
 241 {
 242         unsigned int inlen = MLX5_ST_SZ_BYTES(set_fte_in) +
 243                 fte->dests_size * MLX5_ST_SZ_BYTES(dest_format_struct);
 244         u32 out[MLX5_ST_SZ_DW(set_fte_out)] = {0};
 245         struct mlx5_flow_rule *dst;
 246         void *in_flow_context;
 247         void *in_match_value;
 248         void *in_dests;
 249         u32 *in;
 250         int err;
 251
 252         in = kvzalloc(inlen, GFP_KERNEL);
 253         if (!in)
 254                 return -ENOMEM;
 255
 256         MLX5_SET(set_fte_in, in, opcode, MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY);
 257         MLX5_SET(set_fte_in, in, op_mod, opmod);
 258         MLX5_SET(set_fte_in, in, modify_enable_mask, modify_mask);
 259         MLX5_SET(set_fte_in, in, table_type, ft->type);
 260         MLX5_SET(set_fte_in, in, table_id,   ft->id);
 261         MLX5_SET(set_fte_in, in, flow_index, fte->index);
 262         if (ft->vport) {
 263                 MLX5_SET(set_fte_in, in, vport_number, ft->vport);
 264                 MLX5_SET(set_fte_in, in, other_vport, 1);
 265         }
 266
 267         in_flow_context = MLX5_ADDR_OF(set_fte_in, in, flow_context);
 268         MLX5_SET(flow_context, in_flow_context, group_id, group_id);
 269         MLX5_SET(flow_context, in_flow_context, flow_tag, fte->flow_tag);
 270         MLX5_SET(flow_context, in_flow_context, action, fte->action);
 271         MLX5_SET(flow_context, in_flow_context, encap_id, fte->encap_id);
 272         MLX5_SET(flow_context, in_flow_context, modify_header_id, fte->modify_id);
 273         in_match_value = MLX5_ADDR_OF(flow_context, in_flow_context,
 274                                       match_value);
 275         memcpy(in_match_value, &fte->val, sizeof(fte->val));
 276
 277         in_dests = MLX5_ADDR_OF(flow_context, in_flow_context, destination);
 278         if (fte->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
 279                 int list_size = 0;
 280
 281                 list_for_each_entry(dst, &fte->node.children, node.list) {
 282                         unsigned int id;
 283
 284                         if (dst->dest_attr.type == MLX5_FLOW_DESTINATION_TYPE_COUNTER)
 285                                 continue;
 286
 287                         MLX5_SET(dest_format_struct, in_dests, destination_type,
 288                                  dst->dest_attr.type);
 289                         if (dst->dest_attr.type ==
 290                             MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE) {
 291                                 id = dst->dest_attr.ft->id;
 292                         } else {
 293                                 id = dst->dest_attr.tir_num;
 294                         }
 295                         MLX5_SET(dest_format_struct, in_dests, destination_id, id);
 296                         in_dests += MLX5_ST_SZ_BYTES(dest_format_struct);
 297                         list_size++;
 298                 }
 299
 300                 MLX5_SET(flow_context, in_flow_context, destination_list_size,
 301                          list_size);
 302         }
 303
 304         if (fte->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
 305                 int max_list_size = BIT(MLX5_CAP_FLOWTABLE_TYPE(dev,
 306                                         log_max_flow_counter,
 307                                         ft->type));
 308                 int list_size = 0;
 309
 310                 list_for_each_entry(dst, &fte->node.children, node.list) {
 311                         if (dst->dest_attr.type !=
 312                             MLX5_FLOW_DESTINATION_TYPE_COUNTER)
 313                                 continue;
 314
 315                         MLX5_SET(flow_counter_list, in_dests, flow_counter_id,
 316                                  dst->dest_attr.counter->id);
 317                         in_dests += MLX5_ST_SZ_BYTES(dest_format_struct);
 318                         list_size++;
 319                 }
 320                 if (list_size > max_list_size) {
 321                         err = -EINVAL;
 322                         goto err_out;
 323                 }
 324
 325                 MLX5_SET(flow_context, in_flow_context, flow_counter_list_size,
 326                          list_size);
 327         }
 328
 329         err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
 330 err_out:
 331         kvfree(in);
 332         return err;
 333 }
 334
 335 int mlx5_cmd_create_fte(struct mlx5_core_dev *dev,
 336                         struct mlx5_flow_table *ft,
 337                         unsigned group_id,
 338                         struct fs_fte *fte)
 339 {
 340         return mlx5_cmd_set_fte(dev, 0, 0, ft, group_id, fte);
 341 }
 342
 343 int mlx5_cmd_update_fte(struct mlx5_core_dev *dev,
 344                         struct mlx5_flow_table *ft,
 345                         unsigned group_id,
 346                         int modify_mask,
 347                         struct fs_fte *fte)
 348 {
 349         int opmod;
 350         int atomic_mod_cap = MLX5_CAP_FLOWTABLE(dev,
 351                                                 flow_table_properties_nic_receive.
 352                                                 flow_modify_en);
 353         if (!atomic_mod_cap)
 354                 return -EOPNOTSUPP;
 355         opmod = 1;
 356
 357         return  mlx5_cmd_set_fte(dev, opmod, modify_mask, ft, group_id, fte);
 358 }
 359
 360 int mlx5_cmd_delete_fte(struct mlx5_core_dev *dev,
 361                         struct mlx5_flow_table *ft,
 362                         unsigned int index)
 363 {
 364         u32 out[MLX5_ST_SZ_DW(delete_fte_out)] = {0};
 365         u32 in[MLX5_ST_SZ_DW(delete_fte_in)]   = {0};
 366
 367         MLX5_SET(delete_fte_in, in, opcode, MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY);
 368         MLX5_SET(delete_fte_in, in, table_type, ft->type);
 369         MLX5_SET(delete_fte_in, in, table_id, ft->id);
 370         MLX5_SET(delete_fte_in, in, flow_index, index);
 371         if (ft->vport) {
 372                 MLX5_SET(delete_fte_in, in, vport_number, ft->vport);
 373                 MLX5_SET(delete_fte_in, in, other_vport, 1);
 374         }
 375
 376         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 377 }
 378
 379 int mlx5_cmd_fc_alloc(struct mlx5_core_dev *dev, u32 *id)
 380 {
 381         u32 in[MLX5_ST_SZ_DW(alloc_flow_counter_in)]   = {0};
 382         u32 out[MLX5_ST_SZ_DW(alloc_flow_counter_out)] = {0};
 383         int err;
 384
 385         MLX5_SET(alloc_flow_counter_in, in, opcode,
 386                  MLX5_CMD_OP_ALLOC_FLOW_COUNTER);
 387
 388         err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 389         if (!err)
 390                 *id = MLX5_GET(alloc_flow_counter_out, out, flow_counter_id);
 391         return err;
 392 }
 393
 394 int mlx5_cmd_fc_free(struct mlx5_core_dev *dev, u32 id)
 395 {
 396         u32 in[MLX5_ST_SZ_DW(dealloc_flow_counter_in)]   = {0};
 397         u32 out[MLX5_ST_SZ_DW(dealloc_flow_counter_out)] = {0};
 398
 399         MLX5_SET(dealloc_flow_counter_in, in, opcode,
 400                  MLX5_CMD_OP_DEALLOC_FLOW_COUNTER);
 401         MLX5_SET(dealloc_flow_counter_in, in, flow_counter_id, id);
 402         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 403 }
 404
 405 int mlx5_cmd_fc_query(struct mlx5_core_dev *dev, u32 id,
 406                       u64 *packets, u64 *bytes)
 407 {
 408         u32 out[MLX5_ST_SZ_BYTES(query_flow_counter_out) +
 409                 MLX5_ST_SZ_BYTES(traffic_counter)]   = {0};
 410         u32 in[MLX5_ST_SZ_DW(query_flow_counter_in)] = {0};
 411         void *stats;
 412         int err = 0;
 413
 414         MLX5_SET(query_flow_counter_in, in, opcode,
 415                  MLX5_CMD_OP_QUERY_FLOW_COUNTER);
 416         MLX5_SET(query_flow_counter_in, in, op_mod, 0);
 417         MLX5_SET(query_flow_counter_in, in, flow_counter_id, id);
 418         err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 419         if (err)
 420                 return err;
 421
 422         stats = MLX5_ADDR_OF(query_flow_counter_out, out, flow_statistics);
 423         *packets = MLX5_GET64(traffic_counter, stats, packets);
 424         *bytes = MLX5_GET64(traffic_counter, stats, octets);
 425         return 0;
 426 }
 427
 428 struct mlx5_cmd_fc_bulk {
 429         u32 id;
 430         int num;
 431         int outlen;
 432         u32 out[0];
 433 };
 434
 435 struct mlx5_cmd_fc_bulk *
 436 mlx5_cmd_fc_bulk_alloc(struct mlx5_core_dev *dev, u32 id, int num)
 437 {
 438         struct mlx5_cmd_fc_bulk *b;
 439         int outlen =
 440                 MLX5_ST_SZ_BYTES(query_flow_counter_out) +
 441                 MLX5_ST_SZ_BYTES(traffic_counter) * num;
 442
 443         b = kzalloc(sizeof(*b) + outlen, GFP_KERNEL);
 444         if (!b)
 445                 return NULL;
 446
 447         b->id = id;
 448         b->num = num;
 449         b->outlen = outlen;
 450
 451         return b;
 452 }
 453
 454 void mlx5_cmd_fc_bulk_free(struct mlx5_cmd_fc_bulk *b)
 455 {
 456         kfree(b);
 457 }
 458
 459 int
 460 mlx5_cmd_fc_bulk_query(struct mlx5_core_dev *dev, struct mlx5_cmd_fc_bulk *b)
 461 {
 462         u32 in[MLX5_ST_SZ_DW(query_flow_counter_in)] = {0};
 463
 464         MLX5_SET(query_flow_counter_in, in, opcode,
 465                  MLX5_CMD_OP_QUERY_FLOW_COUNTER);
 466         MLX5_SET(query_flow_counter_in, in, op_mod, 0);
 467         MLX5_SET(query_flow_counter_in, in, flow_counter_id, b->id);
 468         MLX5_SET(query_flow_counter_in, in, num_of_counters, b->num);
 469         return mlx5_cmd_exec(dev, in, sizeof(in), b->out, b->outlen);
 470 }
 471
 472 void mlx5_cmd_fc_bulk_get(struct mlx5_core_dev *dev,
 473                           struct mlx5_cmd_fc_bulk *b, u32 id,
 474                           u64 *packets, u64 *bytes)
 475 {
 476         int index = id - b->id;
 477         void *stats;
 478
 479         if (index < 0 || index >= b->num) {
 480                 mlx5_core_warn(dev, "Flow counter id (0x%x) out of range (0x%x..0x%x). Counter ignored.\n",
 481                                id, b->id, b->id + b->num - 1);
 482                 return;
 483         }
 484
 485         stats = MLX5_ADDR_OF(query_flow_counter_out, b->out,
 486                              flow_statistics[index]);
 487         *packets = MLX5_GET64(traffic_counter, stats, packets);
 488         *bytes = MLX5_GET64(traffic_counter, stats, octets);
 489 }
 490
 491 int mlx5_encap_alloc(struct mlx5_core_dev *dev,
 492                      int header_type,
 493                      size_t size,
 494                      void *encap_header,
 495                      u32 *encap_id)
 496 {
 497         int max_encap_size = MLX5_CAP_ESW(dev, max_encap_header_size);
 498         u32 out[MLX5_ST_SZ_DW(alloc_encap_header_out)];
 499         void *encap_header_in;
 500         void *header;
 501         int inlen;
 502         int err;
 503         u32 *in;
 504
 505         if (size > max_encap_size) {
 506                 mlx5_core_warn(dev, "encap size %zd too big, max supported is %d\n",
 507                                size, max_encap_size);
 508                 return -EINVAL;
 509         }
 510
 511         in = kzalloc(MLX5_ST_SZ_BYTES(alloc_encap_header_in) + size,
 512                      GFP_KERNEL);
 513         if (!in)
 514                 return -ENOMEM;
 515
 516         encap_header_in = MLX5_ADDR_OF(alloc_encap_header_in, in, encap_header);
 517         header = MLX5_ADDR_OF(encap_header_in, encap_header_in, encap_header);
 518         inlen = header - (void *)in  + size;
 519
 520         memset(in, 0, inlen);
 521         MLX5_SET(alloc_encap_header_in, in, opcode,
 522                  MLX5_CMD_OP_ALLOC_ENCAP_HEADER);
 523         MLX5_SET(encap_header_in, encap_header_in, encap_header_size, size);
 524         MLX5_SET(encap_header_in, encap_header_in, header_type, header_type);
 525         memcpy(header, encap_header, size);
 526
 527         memset(out, 0, sizeof(out));
 528         err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
 529
 530         *encap_id = MLX5_GET(alloc_encap_header_out, out, encap_id);
 531         kfree(in);
 532         return err;
 533 }
 534
 535 void mlx5_encap_dealloc(struct mlx5_core_dev *dev, u32 encap_id)
 536 {
 537         u32 in[MLX5_ST_SZ_DW(dealloc_encap_header_in)];
 538         u32 out[MLX5_ST_SZ_DW(dealloc_encap_header_out)];
 539
 540         memset(in, 0, sizeof(in));
 541         MLX5_SET(dealloc_encap_header_in, in, opcode,
 542                  MLX5_CMD_OP_DEALLOC_ENCAP_HEADER);
 543         MLX5_SET(dealloc_encap_header_in, in, encap_id, encap_id);
 544
 545         mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 546 }
 547
 548 int mlx5_modify_header_alloc(struct mlx5_core_dev *dev,
 549                              u8 namespace, u8 num_actions,
 550                              void *modify_actions, u32 *modify_header_id)
 551 {
 552         u32 out[MLX5_ST_SZ_DW(alloc_modify_header_context_out)];
 553         int max_actions, actions_size, inlen, err;
 554         void *actions_in;
 555         u8 table_type;
 556         u32 *in;
 557
 558         switch (namespace) {
 559         case MLX5_FLOW_NAMESPACE_FDB:
 560                 max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(dev, max_modify_header_actions);
 561                 table_type = FS_FT_FDB;
 562                 break;
 563         case MLX5_FLOW_NAMESPACE_KERNEL:
 564                 max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(dev, max_modify_header_actions);
 565                 table_type = FS_FT_NIC_RX;
 566                 break;
 567         default:
 568                 return -EOPNOTSUPP;
 569         }
 570
 571         if (num_actions > max_actions) {
 572                 mlx5_core_warn(dev, "too many modify header actions %d, max supported %d\n",
 573                                num_actions, max_actions);
 574                 return -EOPNOTSUPP;
 575         }
 576
 577         actions_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto) * num_actions;
 578         inlen = MLX5_ST_SZ_BYTES(alloc_modify_header_context_in) + actions_size;
 579
 580         in = kzalloc(inlen, GFP_KERNEL);
 581         if (!in)
 582                 return -ENOMEM;
 583
 584         MLX5_SET(alloc_modify_header_context_in, in, opcode,
 585                  MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT);
 586         MLX5_SET(alloc_modify_header_context_in, in, table_type, table_type);
 587         MLX5_SET(alloc_modify_header_context_in, in, num_of_actions, num_actions);
 588
 589         actions_in = MLX5_ADDR_OF(alloc_modify_header_context_in, in, actions);
 590         memcpy(actions_in, modify_actions, actions_size);
 591
 592         memset(out, 0, sizeof(out));
 593         err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
 594
 595         *modify_header_id = MLX5_GET(alloc_modify_header_context_out, out, modify_header_id);
 596         kfree(in);
 597         return err;
 598 }
 599
 600 void mlx5_modify_header_dealloc(struct mlx5_core_dev *dev, u32 modify_header_id)
 601 {
 602         u32 in[MLX5_ST_SZ_DW(dealloc_modify_header_context_in)];
 603         u32 out[MLX5_ST_SZ_DW(dealloc_modify_header_context_out)];
 604
 605         memset(in, 0, sizeof(in));
 606         MLX5_SET(dealloc_modify_header_context_in, in, opcode,
 607                  MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT);
 608         MLX5_SET(dealloc_modify_header_context_in, in, modify_header_id,
 609                  modify_header_id);
 610
 611         mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 612 }