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[sfrench/cifs-2.6.git] / 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 {
45         u32 in[MLX5_ST_SZ_DW(set_flow_table_root_in)]   = {0};
46         u32 out[MLX5_ST_SZ_DW(set_flow_table_root_out)] = {0};
47
48         if ((MLX5_CAP_GEN(dev, port_type) == MLX5_CAP_PORT_TYPE_IB) &&
49             underlay_qpn == 0)
50                 return 0;
51
52         MLX5_SET(set_flow_table_root_in, in, opcode,
53                  MLX5_CMD_OP_SET_FLOW_TABLE_ROOT);
54         MLX5_SET(set_flow_table_root_in, in, table_type, ft->type);
55         MLX5_SET(set_flow_table_root_in, in, table_id, ft->id);
56         MLX5_SET(set_flow_table_root_in, in, underlay_qpn, underlay_qpn);
57         if (ft->vport) {
58                 MLX5_SET(set_flow_table_root_in, in, vport_number, ft->vport);
59                 MLX5_SET(set_flow_table_root_in, in, other_vport, 1);
60         }
61
62         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
63 }
64
65 int mlx5_cmd_create_flow_table(struct mlx5_core_dev *dev,
66                                u16 vport,
67                                enum fs_flow_table_op_mod op_mod,
68                                enum fs_flow_table_type type, unsigned int level,
69                                unsigned int log_size, struct mlx5_flow_table
70                                *next_ft, unsigned int *table_id, u32 flags)
71 {
72         int en_encap_decap = !!(flags & MLX5_FLOW_TABLE_TUNNEL_EN);
73         u32 out[MLX5_ST_SZ_DW(create_flow_table_out)] = {0};
74         u32 in[MLX5_ST_SZ_DW(create_flow_table_in)]   = {0};
75         int err;
76
77         MLX5_SET(create_flow_table_in, in, opcode,
78                  MLX5_CMD_OP_CREATE_FLOW_TABLE);
79
80         MLX5_SET(create_flow_table_in, in, table_type, type);
81         MLX5_SET(create_flow_table_in, in, level, level);
82         MLX5_SET(create_flow_table_in, in, log_size, log_size);
83         if (vport) {
84                 MLX5_SET(create_flow_table_in, in, vport_number, vport);
85                 MLX5_SET(create_flow_table_in, in, other_vport, 1);
86         }
87
88         MLX5_SET(create_flow_table_in, in, decap_en, en_encap_decap);
89         MLX5_SET(create_flow_table_in, in, encap_en, en_encap_decap);
90
91         switch (op_mod) {
92         case FS_FT_OP_MOD_NORMAL:
93                 if (next_ft) {
94                         MLX5_SET(create_flow_table_in, in, table_miss_mode, 1);
95                         MLX5_SET(create_flow_table_in, in, table_miss_id, next_ft->id);
96                 }
97                 break;
98
99         case FS_FT_OP_MOD_LAG_DEMUX:
100                 MLX5_SET(create_flow_table_in, in, op_mod, 0x1);
101                 if (next_ft)
102                         MLX5_SET(create_flow_table_in, in, lag_master_next_table_id,
103                                  next_ft->id);
104                 break;
105         }
106
107         err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
108         if (!err)
109                 *table_id = MLX5_GET(create_flow_table_out, out,
110                                      table_id);
111         return err;
112 }
113
114 int mlx5_cmd_destroy_flow_table(struct mlx5_core_dev *dev,
115                                 struct mlx5_flow_table *ft)
116 {
117         u32 in[MLX5_ST_SZ_DW(destroy_flow_table_in)]   = {0};
118         u32 out[MLX5_ST_SZ_DW(destroy_flow_table_out)] = {0};
119
120         MLX5_SET(destroy_flow_table_in, in, opcode,
121                  MLX5_CMD_OP_DESTROY_FLOW_TABLE);
122         MLX5_SET(destroy_flow_table_in, in, table_type, ft->type);
123         MLX5_SET(destroy_flow_table_in, in, table_id, ft->id);
124         if (ft->vport) {
125                 MLX5_SET(destroy_flow_table_in, in, vport_number, ft->vport);
126                 MLX5_SET(destroy_flow_table_in, in, other_vport, 1);
127         }
128
129         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
130 }
131
132 int mlx5_cmd_modify_flow_table(struct mlx5_core_dev *dev,
133                                struct mlx5_flow_table *ft,
134                                struct mlx5_flow_table *next_ft)
135 {
136         u32 in[MLX5_ST_SZ_DW(modify_flow_table_in)]   = {0};
137         u32 out[MLX5_ST_SZ_DW(modify_flow_table_out)] = {0};
138
139         MLX5_SET(modify_flow_table_in, in, opcode,
140                  MLX5_CMD_OP_MODIFY_FLOW_TABLE);
141         MLX5_SET(modify_flow_table_in, in, table_type, ft->type);
142         MLX5_SET(modify_flow_table_in, in, table_id, ft->id);
143
144         if (ft->op_mod == FS_FT_OP_MOD_LAG_DEMUX) {
145                 MLX5_SET(modify_flow_table_in, in, modify_field_select,
146                          MLX5_MODIFY_FLOW_TABLE_LAG_NEXT_TABLE_ID);
147                 if (next_ft) {
148                         MLX5_SET(modify_flow_table_in, in,
149                                  lag_master_next_table_id, next_ft->id);
150                 } else {
151                         MLX5_SET(modify_flow_table_in, in,
152                                  lag_master_next_table_id, 0);
153                 }
154         } else {
155                 if (ft->vport) {
156                         MLX5_SET(modify_flow_table_in, in, vport_number,
157                                  ft->vport);
158                         MLX5_SET(modify_flow_table_in, in, other_vport, 1);
159                 }
160                 MLX5_SET(modify_flow_table_in, in, modify_field_select,
161                          MLX5_MODIFY_FLOW_TABLE_MISS_TABLE_ID);
162                 if (next_ft) {
163                         MLX5_SET(modify_flow_table_in, in, table_miss_mode, 1);
164                         MLX5_SET(modify_flow_table_in, in, table_miss_id,
165                                  next_ft->id);
166                 } else {
167                         MLX5_SET(modify_flow_table_in, in, table_miss_mode, 0);
168                 }
169         }
170
171         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
172 }
173
174 int mlx5_cmd_create_flow_group(struct mlx5_core_dev *dev,
175                                struct mlx5_flow_table *ft,
176                                u32 *in,
177                                unsigned int *group_id)
178 {
179         u32 out[MLX5_ST_SZ_DW(create_flow_group_out)] = {0};
180         int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
181         int err;
182
183         MLX5_SET(create_flow_group_in, in, opcode,
184                  MLX5_CMD_OP_CREATE_FLOW_GROUP);
185         MLX5_SET(create_flow_group_in, in, table_type, ft->type);
186         MLX5_SET(create_flow_group_in, in, table_id, ft->id);
187         if (ft->vport) {
188                 MLX5_SET(create_flow_group_in, in, vport_number, ft->vport);
189                 MLX5_SET(create_flow_group_in, in, other_vport, 1);
190         }
191
192         err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
193         if (!err)
194                 *group_id = MLX5_GET(create_flow_group_out, out,
195                                      group_id);
196         return err;
197 }
198
199 int mlx5_cmd_destroy_flow_group(struct mlx5_core_dev *dev,
200                                 struct mlx5_flow_table *ft,
201                                 unsigned int group_id)
202 {
203         u32 out[MLX5_ST_SZ_DW(destroy_flow_group_out)] = {0};
204         u32 in[MLX5_ST_SZ_DW(destroy_flow_group_in)]   = {0};
205
206         MLX5_SET(destroy_flow_group_in, in, opcode,
207                  MLX5_CMD_OP_DESTROY_FLOW_GROUP);
208         MLX5_SET(destroy_flow_group_in, in, table_type, ft->type);
209         MLX5_SET(destroy_flow_group_in, in, table_id, ft->id);
210         MLX5_SET(destroy_flow_group_in, in, group_id, group_id);
211         if (ft->vport) {
212                 MLX5_SET(destroy_flow_group_in, in, vport_number, ft->vport);
213                 MLX5_SET(destroy_flow_group_in, in, other_vport, 1);
214         }
215
216         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
217 }
218
219 static int mlx5_cmd_set_fte(struct mlx5_core_dev *dev,
220                             int opmod, int modify_mask,
221                             struct mlx5_flow_table *ft,
222                             unsigned group_id,
223                             struct fs_fte *fte)
224 {
225         unsigned int inlen = MLX5_ST_SZ_BYTES(set_fte_in) +
226                 fte->dests_size * MLX5_ST_SZ_BYTES(dest_format_struct);
227         u32 out[MLX5_ST_SZ_DW(set_fte_out)] = {0};
228         struct mlx5_flow_rule *dst;
229         void *in_flow_context;
230         void *in_match_value;
231         void *in_dests;
232         u32 *in;
233         int err;
234
235         in = mlx5_vzalloc(inlen);
236         if (!in) {
237                 mlx5_core_warn(dev, "failed to allocate inbox\n");
238                 return -ENOMEM;
239         }
240
241         MLX5_SET(set_fte_in, in, opcode, MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY);
242         MLX5_SET(set_fte_in, in, op_mod, opmod);
243         MLX5_SET(set_fte_in, in, modify_enable_mask, modify_mask);
244         MLX5_SET(set_fte_in, in, table_type, ft->type);
245         MLX5_SET(set_fte_in, in, table_id,   ft->id);
246         MLX5_SET(set_fte_in, in, flow_index, fte->index);
247         if (ft->vport) {
248                 MLX5_SET(set_fte_in, in, vport_number, ft->vport);
249                 MLX5_SET(set_fte_in, in, other_vport, 1);
250         }
251
252         in_flow_context = MLX5_ADDR_OF(set_fte_in, in, flow_context);
253         MLX5_SET(flow_context, in_flow_context, group_id, group_id);
254         MLX5_SET(flow_context, in_flow_context, flow_tag, fte->flow_tag);
255         MLX5_SET(flow_context, in_flow_context, action, fte->action);
256         MLX5_SET(flow_context, in_flow_context, encap_id, fte->encap_id);
257         MLX5_SET(flow_context, in_flow_context, modify_header_id, fte->modify_id);
258         in_match_value = MLX5_ADDR_OF(flow_context, in_flow_context,
259                                       match_value);
260         memcpy(in_match_value, &fte->val, MLX5_ST_SZ_BYTES(fte_match_param));
261
262         in_dests = MLX5_ADDR_OF(flow_context, in_flow_context, destination);
263         if (fte->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
264                 int list_size = 0;
265
266                 list_for_each_entry(dst, &fte->node.children, node.list) {
267                         unsigned int id;
268
269                         if (dst->dest_attr.type == MLX5_FLOW_DESTINATION_TYPE_COUNTER)
270                                 continue;
271
272                         MLX5_SET(dest_format_struct, in_dests, destination_type,
273                                  dst->dest_attr.type);
274                         if (dst->dest_attr.type ==
275                             MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE) {
276                                 id = dst->dest_attr.ft->id;
277                         } else {
278                                 id = dst->dest_attr.tir_num;
279                         }
280                         MLX5_SET(dest_format_struct, in_dests, destination_id, id);
281                         in_dests += MLX5_ST_SZ_BYTES(dest_format_struct);
282                         list_size++;
283                 }
284
285                 MLX5_SET(flow_context, in_flow_context, destination_list_size,
286                          list_size);
287         }
288
289         if (fte->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
290                 int list_size = 0;
291
292                 list_for_each_entry(dst, &fte->node.children, node.list) {
293                         if (dst->dest_attr.type !=
294                             MLX5_FLOW_DESTINATION_TYPE_COUNTER)
295                                 continue;
296
297                         MLX5_SET(flow_counter_list, in_dests, flow_counter_id,
298                                  dst->dest_attr.counter->id);
299                         in_dests += MLX5_ST_SZ_BYTES(dest_format_struct);
300                         list_size++;
301                 }
302
303                 MLX5_SET(flow_context, in_flow_context, flow_counter_list_size,
304                          list_size);
305         }
306
307         err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
308         kvfree(in);
309         return err;
310 }
311
312 int mlx5_cmd_create_fte(struct mlx5_core_dev *dev,
313                         struct mlx5_flow_table *ft,
314                         unsigned group_id,
315                         struct fs_fte *fte)
316 {
317         return mlx5_cmd_set_fte(dev, 0, 0, ft, group_id, fte);
318 }
319
320 int mlx5_cmd_update_fte(struct mlx5_core_dev *dev,
321                         struct mlx5_flow_table *ft,
322                         unsigned group_id,
323                         int modify_mask,
324                         struct fs_fte *fte)
325 {
326         int opmod;
327         int atomic_mod_cap = MLX5_CAP_FLOWTABLE(dev,
328                                                 flow_table_properties_nic_receive.
329                                                 flow_modify_en);
330         if (!atomic_mod_cap)
331                 return -EOPNOTSUPP;
332         opmod = 1;
333
334         return  mlx5_cmd_set_fte(dev, opmod, modify_mask, ft, group_id, fte);
335 }
336
337 int mlx5_cmd_delete_fte(struct mlx5_core_dev *dev,
338                         struct mlx5_flow_table *ft,
339                         unsigned int index)
340 {
341         u32 out[MLX5_ST_SZ_DW(delete_fte_out)] = {0};
342         u32 in[MLX5_ST_SZ_DW(delete_fte_in)]   = {0};
343
344         MLX5_SET(delete_fte_in, in, opcode, MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY);
345         MLX5_SET(delete_fte_in, in, table_type, ft->type);
346         MLX5_SET(delete_fte_in, in, table_id, ft->id);
347         MLX5_SET(delete_fte_in, in, flow_index, index);
348         if (ft->vport) {
349                 MLX5_SET(delete_fte_in, in, vport_number, ft->vport);
350                 MLX5_SET(delete_fte_in, in, other_vport, 1);
351         }
352
353         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
354 }
355
356 int mlx5_cmd_fc_alloc(struct mlx5_core_dev *dev, u16 *id)
357 {
358         u32 in[MLX5_ST_SZ_DW(alloc_flow_counter_in)]   = {0};
359         u32 out[MLX5_ST_SZ_DW(alloc_flow_counter_out)] = {0};
360         int err;
361
362         MLX5_SET(alloc_flow_counter_in, in, opcode,
363                  MLX5_CMD_OP_ALLOC_FLOW_COUNTER);
364
365         err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
366         if (!err)
367                 *id = MLX5_GET(alloc_flow_counter_out, out, flow_counter_id);
368         return err;
369 }
370
371 int mlx5_cmd_fc_free(struct mlx5_core_dev *dev, u16 id)
372 {
373         u32 in[MLX5_ST_SZ_DW(dealloc_flow_counter_in)]   = {0};
374         u32 out[MLX5_ST_SZ_DW(dealloc_flow_counter_out)] = {0};
375
376         MLX5_SET(dealloc_flow_counter_in, in, opcode,
377                  MLX5_CMD_OP_DEALLOC_FLOW_COUNTER);
378         MLX5_SET(dealloc_flow_counter_in, in, flow_counter_id, id);
379         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
380 }
381
382 int mlx5_cmd_fc_query(struct mlx5_core_dev *dev, u16 id,
383                       u64 *packets, u64 *bytes)
384 {
385         u32 out[MLX5_ST_SZ_BYTES(query_flow_counter_out) +
386                 MLX5_ST_SZ_BYTES(traffic_counter)]   = {0};
387         u32 in[MLX5_ST_SZ_DW(query_flow_counter_in)] = {0};
388         void *stats;
389         int err = 0;
390
391         MLX5_SET(query_flow_counter_in, in, opcode,
392                  MLX5_CMD_OP_QUERY_FLOW_COUNTER);
393         MLX5_SET(query_flow_counter_in, in, op_mod, 0);
394         MLX5_SET(query_flow_counter_in, in, flow_counter_id, id);
395         err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
396         if (err)
397                 return err;
398
399         stats = MLX5_ADDR_OF(query_flow_counter_out, out, flow_statistics);
400         *packets = MLX5_GET64(traffic_counter, stats, packets);
401         *bytes = MLX5_GET64(traffic_counter, stats, octets);
402         return 0;
403 }
404
405 struct mlx5_cmd_fc_bulk {
406         u16 id;
407         int num;
408         int outlen;
409         u32 out[0];
410 };
411
412 struct mlx5_cmd_fc_bulk *
413 mlx5_cmd_fc_bulk_alloc(struct mlx5_core_dev *dev, u16 id, int num)
414 {
415         struct mlx5_cmd_fc_bulk *b;
416         int outlen =
417                 MLX5_ST_SZ_BYTES(query_flow_counter_out) +
418                 MLX5_ST_SZ_BYTES(traffic_counter) * num;
419
420         b = kzalloc(sizeof(*b) + outlen, GFP_KERNEL);
421         if (!b)
422                 return NULL;
423
424         b->id = id;
425         b->num = num;
426         b->outlen = outlen;
427
428         return b;
429 }
430
431 void mlx5_cmd_fc_bulk_free(struct mlx5_cmd_fc_bulk *b)
432 {
433         kfree(b);
434 }
435
436 int
437 mlx5_cmd_fc_bulk_query(struct mlx5_core_dev *dev, struct mlx5_cmd_fc_bulk *b)
438 {
439         u32 in[MLX5_ST_SZ_DW(query_flow_counter_in)] = {0};
440
441         MLX5_SET(query_flow_counter_in, in, opcode,
442                  MLX5_CMD_OP_QUERY_FLOW_COUNTER);
443         MLX5_SET(query_flow_counter_in, in, op_mod, 0);
444         MLX5_SET(query_flow_counter_in, in, flow_counter_id, b->id);
445         MLX5_SET(query_flow_counter_in, in, num_of_counters, b->num);
446         return mlx5_cmd_exec(dev, in, sizeof(in), b->out, b->outlen);
447 }
448
449 void mlx5_cmd_fc_bulk_get(struct mlx5_core_dev *dev,
450                           struct mlx5_cmd_fc_bulk *b, u16 id,
451                           u64 *packets, u64 *bytes)
452 {
453         int index = id - b->id;
454         void *stats;
455
456         if (index < 0 || index >= b->num) {
457                 mlx5_core_warn(dev, "Flow counter id (0x%x) out of range (0x%x..0x%x). Counter ignored.\n",
458                                id, b->id, b->id + b->num - 1);
459                 return;
460         }
461
462         stats = MLX5_ADDR_OF(query_flow_counter_out, b->out,
463                              flow_statistics[index]);
464         *packets = MLX5_GET64(traffic_counter, stats, packets);
465         *bytes = MLX5_GET64(traffic_counter, stats, octets);
466 }
467
468 int mlx5_encap_alloc(struct mlx5_core_dev *dev,
469                      int header_type,
470                      size_t size,
471                      void *encap_header,
472                      u32 *encap_id)
473 {
474         int max_encap_size = MLX5_CAP_ESW(dev, max_encap_header_size);
475         u32 out[MLX5_ST_SZ_DW(alloc_encap_header_out)];
476         void *encap_header_in;
477         void *header;
478         int inlen;
479         int err;
480         u32 *in;
481
482         if (size > max_encap_size) {
483                 mlx5_core_warn(dev, "encap size %zd too big, max supported is %d\n",
484                                size, max_encap_size);
485                 return -EINVAL;
486         }
487
488         in = kzalloc(MLX5_ST_SZ_BYTES(alloc_encap_header_in) + size,
489                      GFP_KERNEL);
490         if (!in)
491                 return -ENOMEM;
492
493         encap_header_in = MLX5_ADDR_OF(alloc_encap_header_in, in, encap_header);
494         header = MLX5_ADDR_OF(encap_header_in, encap_header_in, encap_header);
495         inlen = header - (void *)in  + size;
496
497         memset(in, 0, inlen);
498         MLX5_SET(alloc_encap_header_in, in, opcode,
499                  MLX5_CMD_OP_ALLOC_ENCAP_HEADER);
500         MLX5_SET(encap_header_in, encap_header_in, encap_header_size, size);
501         MLX5_SET(encap_header_in, encap_header_in, header_type, header_type);
502         memcpy(header, encap_header, size);
503
504         memset(out, 0, sizeof(out));
505         err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
506
507         *encap_id = MLX5_GET(alloc_encap_header_out, out, encap_id);
508         kfree(in);
509         return err;
510 }
511
512 void mlx5_encap_dealloc(struct mlx5_core_dev *dev, u32 encap_id)
513 {
514         u32 in[MLX5_ST_SZ_DW(dealloc_encap_header_in)];
515         u32 out[MLX5_ST_SZ_DW(dealloc_encap_header_out)];
516
517         memset(in, 0, sizeof(in));
518         MLX5_SET(dealloc_encap_header_in, in, opcode,
519                  MLX5_CMD_OP_DEALLOC_ENCAP_HEADER);
520         MLX5_SET(dealloc_encap_header_in, in, encap_id, encap_id);
521
522         mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
523 }
524
525 int mlx5_modify_header_alloc(struct mlx5_core_dev *dev,
526                              u8 namespace, u8 num_actions,
527                              void *modify_actions, u32 *modify_header_id)
528 {
529         u32 out[MLX5_ST_SZ_DW(alloc_modify_header_context_out)];
530         int max_actions, actions_size, inlen, err;
531         void *actions_in;
532         u8 table_type;
533         u32 *in;
534
535         switch (namespace) {
536         case MLX5_FLOW_NAMESPACE_FDB:
537                 max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(dev, max_modify_header_actions);
538                 table_type = FS_FT_FDB;
539                 break;
540         case MLX5_FLOW_NAMESPACE_KERNEL:
541                 max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(dev, max_modify_header_actions);
542                 table_type = FS_FT_NIC_RX;
543                 break;
544         default:
545                 return -EOPNOTSUPP;
546         }
547
548         if (num_actions > max_actions) {
549                 mlx5_core_warn(dev, "too many modify header actions %d, max supported %d\n",
550                                num_actions, max_actions);
551                 return -EOPNOTSUPP;
552         }
553
554         actions_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto) * num_actions;
555         inlen = MLX5_ST_SZ_BYTES(alloc_modify_header_context_in) + actions_size;
556
557         in = kzalloc(inlen, GFP_KERNEL);
558         if (!in)
559                 return -ENOMEM;
560
561         MLX5_SET(alloc_modify_header_context_in, in, opcode,
562                  MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT);
563         MLX5_SET(alloc_modify_header_context_in, in, table_type, table_type);
564         MLX5_SET(alloc_modify_header_context_in, in, num_of_actions, num_actions);
565
566         actions_in = MLX5_ADDR_OF(alloc_modify_header_context_in, in, actions);
567         memcpy(actions_in, modify_actions, actions_size);
568
569         memset(out, 0, sizeof(out));
570         err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
571
572         *modify_header_id = MLX5_GET(alloc_modify_header_context_out, out, modify_header_id);
573         kfree(in);
574         return err;
575 }
576
577 void mlx5_modify_header_dealloc(struct mlx5_core_dev *dev, u32 modify_header_id)
578 {
579         u32 in[MLX5_ST_SZ_DW(dealloc_modify_header_context_in)];
580         u32 out[MLX5_ST_SZ_DW(dealloc_modify_header_context_out)];
581
582         memset(in, 0, sizeof(in));
583         MLX5_SET(dealloc_modify_header_context_in, in, opcode,
584                  MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT);
585         MLX5_SET(dealloc_modify_header_context_in, in, modify_header_id,
586                  modify_header_id);
587
588         mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
589 }