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net/mlx4: Handle return codes in mlx4_qp_attach_common
[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx4 / mcg.c
CommitLineData
225c7b1f
RD		 1/*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
51a379d0 3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
225c7b1f
RD		 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
225c7b1f 34#include <linux/string.h>
0345584e 35#include <linux/etherdevice.h>
225c7b1f
RD		 36
37#include <linux/mlx4/cmd.h>
ee40fa06 38#include <linux/export.h>
225c7b1f
RD		 39
40#include "mlx4.h"
41
225c7b1f
RD		 42static const u8 zero_gid[16]; /* automatically initialized to 0 */
43
0ec2c0f8
EE		 44int mlx4_get_mgm_entry_size(struct mlx4_dev *dev)
45{
3c439b55 46 return 1 << dev->oper_log_mgm_entry_size;
0ec2c0f8
EE		 47}
48
49int mlx4_get_qp_per_mgm(struct mlx4_dev *dev)
50{
51 return 4 * (mlx4_get_mgm_entry_size(dev) / 16 - 2);
52}
53
8fcfb4db
HHZ		 54static int mlx4_QP_FLOW_STEERING_ATTACH(struct mlx4_dev *dev,
55 struct mlx4_cmd_mailbox *mailbox,
56 u32 size,
57 u64 *reg_id)
58{
59 u64 imm;
60 int err = 0;
61
62 err = mlx4_cmd_imm(dev, mailbox->dma, &imm, size, 0,
63 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
64 MLX4_CMD_NATIVE);
65 if (err)
66 return err;
67 *reg_id = imm;
68
69 return err;
70}
71
72static int mlx4_QP_FLOW_STEERING_DETACH(struct mlx4_dev *dev, u64 regid)
73{
74 int err = 0;
75
76 err = mlx4_cmd(dev, regid, 0, 0,
77 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
78 MLX4_CMD_NATIVE);
79
80 return err;
81}
82
0345584e
YP		 83static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index,
84 struct mlx4_cmd_mailbox *mailbox)
225c7b1f
RD		 85{
86 return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG,
f9baff50 87 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
225c7b1f
RD		 88}
89
0345584e
YP		 90static int mlx4_WRITE_ENTRY(struct mlx4_dev *dev, int index,
91 struct mlx4_cmd_mailbox *mailbox)
225c7b1f
RD		 92{
93 return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG,
f9baff50 94 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
225c7b1f
RD		 95}
96
0ec2c0f8 97static int mlx4_WRITE_PROMISC(struct mlx4_dev *dev, u8 port, u8 steer,
b12d93d6
YP		 98 struct mlx4_cmd_mailbox *mailbox)
99{
100 u32 in_mod;
101
0ec2c0f8 102 in_mod = (u32) port << 16 | steer << 1;
b12d93d6 103 return mlx4_cmd(dev, mailbox->dma, in_mod, 0x1,
f9baff50
JM		 104 MLX4_CMD_WRITE_MCG, MLX4_CMD_TIME_CLASS_A,
105 MLX4_CMD_NATIVE);
b12d93d6
YP		 106}
107
0345584e
YP		 108static int mlx4_GID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
109 u16 *hash, u8 op_mod)
225c7b1f
RD		 110{
111 u64 imm;
112 int err;
113
0345584e 114 err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, op_mod,
f9baff50
JM		 115 MLX4_CMD_MGID_HASH, MLX4_CMD_TIME_CLASS_A,
116 MLX4_CMD_NATIVE);
225c7b1f
RD		 117
118 if (!err)
119 *hash = imm;
120
121 return err;
122}
123
60d31c14 124static struct mlx4_promisc_qp *get_promisc_qp(struct mlx4_dev *dev, u8 port,
b12d93d6
YP		 125 enum mlx4_steer_type steer,
126 u32 qpn)
127{
982290a7 128 struct mlx4_steer *s_steer;
b12d93d6
YP		 129 struct mlx4_promisc_qp *pqp;
130
982290a7
MB		 131 if (port < 1 || port > dev->caps.num_ports)
132 return NULL;
133
134 s_steer = &mlx4_priv(dev)->steer[port - 1];
135
b12d93d6
YP		 136 list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
137 if (pqp->qpn == qpn)
138 return pqp;
139 }
140 /* not found */
141 return NULL;
142}
143
144/*
145 * Add new entry to steering data structure.
146 * All promisc QPs should be added as well
147 */
0ec2c0f8 148static int new_steering_entry(struct mlx4_dev *dev, u8 port,
b12d93d6
YP		 149 enum mlx4_steer_type steer,
150 unsigned int index, u32 qpn)
151{
152 struct mlx4_steer *s_steer;
153 struct mlx4_cmd_mailbox *mailbox;
154 struct mlx4_mgm *mgm;
155 u32 members_count;
156 struct mlx4_steer_index *new_entry;
157 struct mlx4_promisc_qp *pqp;
a14b289d 158 struct mlx4_promisc_qp *dqp = NULL;
b12d93d6
YP		 159 u32 prot;
160 int err;
b12d93d6 161
982290a7
MB		 162 if (port < 1 || port > dev->caps.num_ports)
163 return -EINVAL;
164
4c41b367 165 s_steer = &mlx4_priv(dev)->steer[port - 1];
b12d93d6
YP		 166 new_entry = kzalloc(sizeof *new_entry, GFP_KERNEL);
167 if (!new_entry)
168 return -ENOMEM;
169
170 INIT_LIST_HEAD(&new_entry->duplicates);
171 new_entry->index = index;
172 list_add_tail(&new_entry->list, &s_steer->steer_entries[steer]);
173
174 /* If the given qpn is also a promisc qp,
175 * it should be inserted to duplicates list
176 */
60d31c14 177 pqp = get_promisc_qp(dev, port, steer, qpn);
b12d93d6
YP		 178 if (pqp) {
179 dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
180 if (!dqp) {
181 err = -ENOMEM;
182 goto out_alloc;
183 }
184 dqp->qpn = qpn;
185 list_add_tail(&dqp->list, &new_entry->duplicates);
186 }
187
188 /* if no promisc qps for this vep, we are done */
189 if (list_empty(&s_steer->promisc_qps[steer]))
190 return 0;
191
192 /* now need to add all the promisc qps to the new
193 * steering entry, as they should also receive the packets
194 * destined to this address */
195 mailbox = mlx4_alloc_cmd_mailbox(dev);
196 if (IS_ERR(mailbox)) {
197 err = -ENOMEM;
198 goto out_alloc;
199 }
200 mgm = mailbox->buf;
201
202 err = mlx4_READ_ENTRY(dev, index, mailbox);
203 if (err)
204 goto out_mailbox;
205
206 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
207 prot = be32_to_cpu(mgm->members_count) >> 30;
208 list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
209 /* don't add already existing qpn */
210 if (pqp->qpn == qpn)
211 continue;
0ec2c0f8 212 if (members_count == dev->caps.num_qp_per_mgm) {
b12d93d6
YP		 213 /* out of space */
214 err = -ENOMEM;
215 goto out_mailbox;
216 }
217
218 /* add the qpn */
219 mgm->qp[members_count++] = cpu_to_be32(pqp->qpn & MGM_QPN_MASK);
220 }
221 /* update the qps count and update the entry with all the promisc qps*/
222 mgm->members_count = cpu_to_be32(members_count | (prot << 30));
223 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
224
225out_mailbox:
226 mlx4_free_cmd_mailbox(dev, mailbox);
227 if (!err)
228 return 0;
229out_alloc:
230 if (dqp) {
231 list_del(&dqp->list);
a14b289d 232 kfree(dqp);
b12d93d6
YP		 233 }
234 list_del(&new_entry->list);
235 kfree(new_entry);
236 return err;
237}
238
239/* update the data structures with existing steering entry */
0ec2c0f8 240static int existing_steering_entry(struct mlx4_dev *dev, u8 port,
b12d93d6
YP		 241 enum mlx4_steer_type steer,
242 unsigned int index, u32 qpn)
243{
244 struct mlx4_steer *s_steer;
245 struct mlx4_steer_index *tmp_entry, *entry = NULL;
246 struct mlx4_promisc_qp *pqp;
247 struct mlx4_promisc_qp *dqp;
b12d93d6 248
982290a7
MB		 249 if (port < 1 || port > dev->caps.num_ports)
250 return -EINVAL;
251
4c41b367 252 s_steer = &mlx4_priv(dev)->steer[port - 1];
b12d93d6 253
60d31c14 254 pqp = get_promisc_qp(dev, port, steer, qpn);
b12d93d6
YP		 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
25985edc 271 * for future references */
b12d93d6 272 list_for_each_entry(dqp, &entry->duplicates, list) {
1645a540 273 if (qpn == dqp->qpn)
b12d93d6
YP		 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 */
0ec2c0f8 289static bool check_duplicate_entry(struct mlx4_dev *dev, u8 port,
b12d93d6
YP		 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;
b12d93d6 296
982290a7
MB		 297 if (port < 1 || port > dev->caps.num_ports)
298 return NULL;
299
4c41b367 300 s_steer = &mlx4_priv(dev)->steer[port - 1];
b12d93d6
YP		 301
302 /* if qp is not promisc, it cannot be duplicated */
60d31c14 303 if (!get_promisc_qp(dev, port, steer, qpn))
b12d93d6
YP		 304 return false;
305
306 /* The qp is promisc qp so it is a duplicate on this index
307 * Find the index entry, and remove the duplicate */
308 list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
309 if (tmp_entry->index == index) {
310 entry = tmp_entry;
311 break;
312 }
313 }
314 if (unlikely(!entry)) {
315 mlx4_warn(dev, "Steering entry for index %x is not registered\n", index);
316 return false;
317 }
318 list_for_each_entry_safe(dqp, tmp_dqp, &entry->duplicates, list) {
319 if (dqp->qpn == qpn) {
320 list_del(&dqp->list);
321 kfree(dqp);
322 }
323 }
324 return true;
325}
326
1645a540
SM		 327/* Returns true if all the QPs != tqpn contained in this entry
328 * are Promisc QPs. Returns false otherwise.
329 */
330static bool promisc_steering_entry(struct mlx4_dev *dev, u8 port,
331 enum mlx4_steer_type steer,
332 unsigned int index, u32 tqpn,
333 u32 *members_count)
b12d93d6 334{
b12d93d6
YP		 335 struct mlx4_cmd_mailbox *mailbox;
336 struct mlx4_mgm *mgm;
1645a540 337 u32 m_count;
b12d93d6
YP		 338 bool ret = false;
339 int i;
b12d93d6 340
982290a7 341 if (port < 1 || port > dev->caps.num_ports)
1645a540 342 return false;
b12d93d6
YP		 343
344 mailbox = mlx4_alloc_cmd_mailbox(dev);
345 if (IS_ERR(mailbox))
346 return false;
347 mgm = mailbox->buf;
348
349 if (mlx4_READ_ENTRY(dev, index, mailbox))
350 goto out;
1645a540
SM		 351 m_count = be32_to_cpu(mgm->members_count) & 0xffffff;
352 if (members_count)
353 *members_count = m_count;
354
355 for (i = 0; i < m_count; i++) {
356 u32 qpn = be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK;
60d31c14 357 if (!get_promisc_qp(dev, port, steer, qpn) && qpn != tqpn) {
b12d93d6
YP		 358 /* the qp is not promisc, the entry can't be removed */
359 goto out;
360 }
361 }
1645a540
SM		 362 ret = true;
363out:
364 mlx4_free_cmd_mailbox(dev, mailbox);
365 return ret;
366}
367
368/* IF a steering entry contains only promisc QPs, it can be removed. */
369static bool can_remove_steering_entry(struct mlx4_dev *dev, u8 port,
370 enum mlx4_steer_type steer,
371 unsigned int index, u32 tqpn)
372{
373 struct mlx4_steer *s_steer;
374 struct mlx4_steer_index *entry = NULL, *tmp_entry;
375 u32 members_count;
376 bool ret = false;
377
378 if (port < 1 || port > dev->caps.num_ports)
379 return NULL;
380
381 s_steer = &mlx4_priv(dev)->steer[port - 1];
382
383 if (!promisc_steering_entry(dev, port, steer, index,
384 tqpn, &members_count))
385 goto out;
386
387 /* All the qps currently registered for this entry are promiscuous,
b12d93d6
YP		 388 * Checking for duplicates */
389 ret = true;
390 list_for_each_entry_safe(entry, tmp_entry, &s_steer->steer_entries[steer], list) {
391 if (entry->index == index) {
0d7869ac
YP		 392 if (list_empty(&entry->duplicates) ||
393 members_count == 1) {
394 struct mlx4_promisc_qp *pqp, *tmp_pqp;
395 /* If there is only 1 entry in duplicates then
396 * this is the QP we want to delete, going over
397 * the list and deleting the entry.
398 */
b12d93d6 399 list_del(&entry->list);
0d7869ac
YP		 400 list_for_each_entry_safe(pqp, tmp_pqp,
401 &entry->duplicates,
402 list) {
403 list_del(&pqp->list);
404 kfree(pqp);
405 }
b12d93d6
YP		 406 kfree(entry);
407 } else {
408 /* This entry contains duplicates so it shouldn't be removed */
409 ret = false;
410 goto out;
411 }
412 }
413 }
414
415out:
b12d93d6
YP		 416 return ret;
417}
418
0ec2c0f8 419static int add_promisc_qp(struct mlx4_dev *dev, u8 port,
b12d93d6
YP		 420 enum mlx4_steer_type steer, u32 qpn)
421{
422 struct mlx4_steer *s_steer;
423 struct mlx4_cmd_mailbox *mailbox;
424 struct mlx4_mgm *mgm;
425 struct mlx4_steer_index *entry;
426 struct mlx4_promisc_qp *pqp;
427 struct mlx4_promisc_qp *dqp;
428 u32 members_count;
429 u32 prot;
430 int i;
431 bool found;
b12d93d6 432 int err;
b12d93d6 433 struct mlx4_priv *priv = mlx4_priv(dev);
0ec2c0f8 434
982290a7
MB		 435 if (port < 1 || port > dev->caps.num_ports)
436 return -EINVAL;
437
4c41b367 438 s_steer = &mlx4_priv(dev)->steer[port - 1];
b12d93d6
YP		 439
440 mutex_lock(&priv->mcg_table.mutex);
441
60d31c14 442 if (get_promisc_qp(dev, port, steer, qpn)) {
b12d93d6
YP		 443 err = 0; /* Noting to do, already exists */
444 goto out_mutex;
445 }
446
447 pqp = kmalloc(sizeof *pqp, GFP_KERNEL);
448 if (!pqp) {
449 err = -ENOMEM;
450 goto out_mutex;
451 }
452 pqp->qpn = qpn;
453
454 mailbox = mlx4_alloc_cmd_mailbox(dev);
455 if (IS_ERR(mailbox)) {
456 err = -ENOMEM;
457 goto out_alloc;
458 }
459 mgm = mailbox->buf;
460
816e5984
EE		 461 if (!(mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)) {
462 /* The promisc QP needs to be added for each one of the steering
463 * entries. If it already exists, needs to be added as
464 * a duplicate for this entry.
465 */
466 list_for_each_entry(entry,
467 &s_steer->steer_entries[steer],
468 list) {
469 err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
470 if (err)
471 goto out_mailbox;
b12d93d6 472
816e5984
EE		 473 members_count = be32_to_cpu(mgm->members_count) &
474 0xffffff;
475 prot = be32_to_cpu(mgm->members_count) >> 30;
476 found = false;
477 for (i = 0; i < members_count; i++) {
478 if ((be32_to_cpu(mgm->qp[i]) &
479 MGM_QPN_MASK) == qpn) {
480 /* Entry already exists.
481 * Add to duplicates.
482 */
483 dqp = kmalloc(sizeof(*dqp), GFP_KERNEL);
484 if (!dqp) {
485 err = -ENOMEM;
486 goto out_mailbox;
487 }
488 dqp->qpn = qpn;
489 list_add_tail(&dqp->list,
490 &entry->duplicates);
491 found = true;
492 }
493 }
494 if (!found) {
495 /* Need to add the qpn to mgm */
496 if (members_count ==
497 dev->caps.num_qp_per_mgm) {
498 /* entry is full */
499b95f6 499 err = -ENOMEM;
b12d93d6 500 goto out_mailbox;
499b95f6 501 }
816e5984
EE		 502 mgm->qp[members_count++] =
503 cpu_to_be32(qpn & MGM_QPN_MASK);
504 mgm->members_count =
505 cpu_to_be32(members_count |
506 (prot << 30));
507 err = mlx4_WRITE_ENTRY(dev, entry->index,
508 mailbox);
509 if (err)
510 goto out_mailbox;
b12d93d6 511 }
b12d93d6 512 }
b12d93d6
YP		 513 }
514
515 /* add the new qpn to list of promisc qps */
516 list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
517 /* now need to add all the promisc qps to default entry */
518 memset(mgm, 0, sizeof *mgm);
519 members_count = 0;
75908376
AG		 520 list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list) {
521 if (members_count == dev->caps.num_qp_per_mgm) {
522 /* entry is full */
523 err = -ENOMEM;
524 goto out_list;
525 }
b12d93d6 526 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
75908376 527 }
b12d93d6
YP		 528 mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
529
0ec2c0f8 530 err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
b12d93d6
YP		 531 if (err)
532 goto out_list;
533
534 mlx4_free_cmd_mailbox(dev, mailbox);
535 mutex_unlock(&priv->mcg_table.mutex);
536 return 0;
537
538out_list:
539 list_del(&pqp->list);
540out_mailbox:
541 mlx4_free_cmd_mailbox(dev, mailbox);
542out_alloc:
543 kfree(pqp);
544out_mutex:
545 mutex_unlock(&priv->mcg_table.mutex);
546 return err;
547}
548
0ec2c0f8 549static int remove_promisc_qp(struct mlx4_dev *dev, u8 port,
b12d93d6
YP		 550 enum mlx4_steer_type steer, u32 qpn)
551{
552 struct mlx4_priv *priv = mlx4_priv(dev);
553 struct mlx4_steer *s_steer;
554 struct mlx4_cmd_mailbox *mailbox;
555 struct mlx4_mgm *mgm;
1645a540 556 struct mlx4_steer_index *entry, *tmp_entry;
b12d93d6
YP		 557 struct mlx4_promisc_qp *pqp;
558 struct mlx4_promisc_qp *dqp;
559 u32 members_count;
560 bool found;
561 bool back_to_list = false;
aab2bb0e 562 int i;
b12d93d6 563 int err;
b12d93d6 564
982290a7
MB		 565 if (port < 1 || port > dev->caps.num_ports)
566 return -EINVAL;
567
4c41b367 568 s_steer = &mlx4_priv(dev)->steer[port - 1];
b12d93d6
YP		 569 mutex_lock(&priv->mcg_table.mutex);
570
60d31c14 571 pqp = get_promisc_qp(dev, port, steer, qpn);
b12d93d6
YP		 572 if (unlikely(!pqp)) {
573 mlx4_warn(dev, "QP %x is not promiscuous QP\n", qpn);
574 /* nothing to do */
575 err = 0;
576 goto out_mutex;
577 }
578
579 /*remove from list of promisc qps */
580 list_del(&pqp->list);
b12d93d6
YP		 581
582 /* set the default entry not to include the removed one */
583 mailbox = mlx4_alloc_cmd_mailbox(dev);
584 if (IS_ERR(mailbox)) {
585 err = -ENOMEM;
586 back_to_list = true;
587 goto out_list;
588 }
589 mgm = mailbox->buf;
590 members_count = 0;
591 list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
592 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
593 mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
594
0ec2c0f8 595 err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
b12d93d6
YP		 596 if (err)
597 goto out_mailbox;
598
816e5984 599 if (!(mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)) {
1645a540
SM		 600 /* Remove the QP from all the steering entries */
601 list_for_each_entry_safe(entry, tmp_entry,
602 &s_steer->steer_entries[steer],
603 list) {
816e5984
EE		 604 found = false;
605 list_for_each_entry(dqp, &entry->duplicates, list) {
606 if (dqp->qpn == qpn) {
607 found = true;
608 break;
609 }
b12d93d6 610 }
816e5984
EE		 611 if (found) {
612 /* A duplicate, no need to change the MGM,
613 * only update the duplicates list
614 */
615 list_del(&dqp->list);
616 kfree(dqp);
617 } else {
618 int loc = -1;
619
620 err = mlx4_READ_ENTRY(dev,
621 entry->index,
622 mailbox);
623 if (err)
624 goto out_mailbox;
625 members_count =
626 be32_to_cpu(mgm->members_count) &
627 0xffffff;
1645a540
SM		 628 if (!members_count) {
629 mlx4_warn(dev, "QP %06x wasn't found in entry %x mcount=0. deleting entry...\n",
630 qpn, entry->index);
631 list_del(&entry->list);
632 kfree(entry);
633 continue;
634 }
635
816e5984
EE		 636 for (i = 0; i < members_count; ++i)
637 if ((be32_to_cpu(mgm->qp[i]) &
638 MGM_QPN_MASK) == qpn) {
639 loc = i;
640 break;
641 }
642
643 if (loc < 0) {
644 mlx4_err(dev, "QP %06x wasn't found in entry %d\n",
645 qpn, entry->index);
646 err = -EINVAL;
b12d93d6 647 goto out_mailbox;
aab2bb0e
DB		 648 }
649
1645a540 650 /* Copy the last QP in this MGM
816e5984
EE		 651 * over removed QP
652 */
653 mgm->qp[loc] = mgm->qp[members_count - 1];
654 mgm->qp[members_count - 1] = 0;
655 mgm->members_count =
656 cpu_to_be32(--members_count |
657 (MLX4_PROT_ETH << 30));
658
659 err = mlx4_WRITE_ENTRY(dev,
660 entry->index,
661 mailbox);
662 if (err)
663 goto out_mailbox;
aab2bb0e 664 }
b12d93d6 665 }
b12d93d6
YP		 666 }
667
668out_mailbox:
669 mlx4_free_cmd_mailbox(dev, mailbox);
670out_list:
671 if (back_to_list)
672 list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
53020092
YP		 673 else
674 kfree(pqp);
b12d93d6
YP		 675out_mutex:
676 mutex_unlock(&priv->mcg_table.mutex);
677 return err;
678}
679
225c7b1f
RD		 680/*
681 * Caller must hold MCG table semaphore. gid and mgm parameters must
682 * be properly aligned for command interface.
683 *
684 * Returns 0 unless a firmware command error occurs.
685 *
686 * If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
687 * and *mgm holds MGM entry.
688 *
689 * if GID is found in AMGM, *index = index in AMGM, *prev = index of
690 * previous entry in hash chain and *mgm holds AMGM entry.
691 *
692 * If no AMGM exists for given gid, *index = -1, *prev = index of last
693 * entry in hash chain and *mgm holds end of hash chain.
694 */
0345584e
YP		 695static int find_entry(struct mlx4_dev *dev, u8 port,
696 u8 *gid, enum mlx4_protocol prot,
0345584e 697 struct mlx4_cmd_mailbox *mgm_mailbox,
deb8b3e8 698 int *prev, int *index)
225c7b1f
RD		 699{
700 struct mlx4_cmd_mailbox *mailbox;
701 struct mlx4_mgm *mgm = mgm_mailbox->buf;
702 u8 *mgid;
703 int err;
deb8b3e8 704 u16 hash;
ccf86321
OG		 705 u8 op_mod = (prot == MLX4_PROT_ETH) ?
706 !!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) : 0;
225c7b1f
RD		 707
708 mailbox = mlx4_alloc_cmd_mailbox(dev);
709 if (IS_ERR(mailbox))
710 return -ENOMEM;
711 mgid = mailbox->buf;
712
713 memcpy(mgid, gid, 16);
714
deb8b3e8 715 err = mlx4_GID_HASH(dev, mailbox, &hash, op_mod);
225c7b1f
RD		 716 mlx4_free_cmd_mailbox(dev, mailbox);
717 if (err)
718 return err;
719
720 if (0)
deb8b3e8 721 mlx4_dbg(dev, "Hash for %pI6 is %04x\n", gid, hash);
225c7b1f 722
deb8b3e8 723 *index = hash;
225c7b1f
RD		 724 *prev = -1;
725
726 do {
0345584e 727 err = mlx4_READ_ENTRY(dev, *index, mgm_mailbox);
225c7b1f
RD		 728 if (err)
729 return err;
730
0345584e 731 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
deb8b3e8 732 if (*index != hash) {
1a91de28 733 mlx4_err(dev, "Found zero MGID in AMGM\n");
225c7b1f
RD		 734 err = -EINVAL;
735 }
736 return err;
737 }
738
da995a8a 739 if (!memcmp(mgm->gid, gid, 16) &&
0345584e 740 be32_to_cpu(mgm->members_count) >> 30 == prot)
225c7b1f
RD		 741 return err;
742
743 *prev = *index;
744 *index = be32_to_cpu(mgm->next_gid_index) >> 6;
745 } while (*index);
746
747 *index = -1;
748 return err;
749}
750
c2c19dc3
HHZ		 751static const u8 __promisc_mode[] = {
752 [MLX4_FS_REGULAR] = 0x0,
753 [MLX4_FS_ALL_DEFAULT] = 0x1,
754 [MLX4_FS_MC_DEFAULT] = 0x3,
755 [MLX4_FS_UC_SNIFFER] = 0x4,
756 [MLX4_FS_MC_SNIFFER] = 0x5,
757};
758
759int mlx4_map_sw_to_hw_steering_mode(struct mlx4_dev *dev,
760 enum mlx4_net_trans_promisc_mode flow_type)
761{
fe66bb2d 762 if (flow_type >= MLX4_FS_MODE_NUM) {
c2c19dc3
HHZ		 763 mlx4_err(dev, "Invalid flow type. type = %d\n", flow_type);
764 return -EINVAL;
765 }
766 return __promisc_mode[flow_type];
767}
768EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_mode);
769
0ff1fb65
HHZ		 770static void trans_rule_ctrl_to_hw(struct mlx4_net_trans_rule *ctrl,
771 struct mlx4_net_trans_rule_hw_ctrl *hw)
772{
bcf37297 773 u8 flags = 0;
0ff1fb65 774
bcf37297
HHZ		 775 flags = ctrl->queue_mode == MLX4_NET_TRANS_Q_LIFO ? 1 : 0;
776 flags |= ctrl->exclusive ? (1 << 2) : 0;
777 flags |= ctrl->allow_loopback ? (1 << 3) : 0;
0ff1fb65 778
bcf37297
HHZ		 779 hw->flags = flags;
780 hw->type = __promisc_mode[ctrl->promisc_mode];
781 hw->prio = cpu_to_be16(ctrl->priority);
015465f8 782 hw->port = ctrl->port;
0ff1fb65
HHZ		 783 hw->qpn = cpu_to_be32(ctrl->qpn);
784}
785
a8edc3bf
HHZ		 786const u16 __sw_id_hw[] = {
787 [MLX4_NET_TRANS_RULE_ID_ETH] = 0xE001,
788 [MLX4_NET_TRANS_RULE_ID_IB] = 0xE005,
789 [MLX4_NET_TRANS_RULE_ID_IPV6] = 0xE003,
790 [MLX4_NET_TRANS_RULE_ID_IPV4] = 0xE002,
791 [MLX4_NET_TRANS_RULE_ID_TCP] = 0xE004,
7ffdf726
OG		 792 [MLX4_NET_TRANS_RULE_ID_UDP] = 0xE006,
793 [MLX4_NET_TRANS_RULE_ID_VXLAN] = 0xE008
0ff1fb65
HHZ		 794};
795
c2c19dc3
HHZ		 796int mlx4_map_sw_to_hw_steering_id(struct mlx4_dev *dev,
797 enum mlx4_net_trans_rule_id id)
798{
fe66bb2d 799 if (id >= MLX4_NET_TRANS_RULE_NUM) {
c2c19dc3
HHZ		 800 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
801 return -EINVAL;
802 }
803 return __sw_id_hw[id];
804}
805EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_id);
806
807static const int __rule_hw_sz[] = {
808 [MLX4_NET_TRANS_RULE_ID_ETH] =
809 sizeof(struct mlx4_net_trans_rule_hw_eth),
810 [MLX4_NET_TRANS_RULE_ID_IB] =
811 sizeof(struct mlx4_net_trans_rule_hw_ib),
812 [MLX4_NET_TRANS_RULE_ID_IPV6] = 0,
813 [MLX4_NET_TRANS_RULE_ID_IPV4] =
814 sizeof(struct mlx4_net_trans_rule_hw_ipv4),
815 [MLX4_NET_TRANS_RULE_ID_TCP] =
816 sizeof(struct mlx4_net_trans_rule_hw_tcp_udp),
817 [MLX4_NET_TRANS_RULE_ID_UDP] =
7ffdf726
OG		 818 sizeof(struct mlx4_net_trans_rule_hw_tcp_udp),
819 [MLX4_NET_TRANS_RULE_ID_VXLAN] =
820 sizeof(struct mlx4_net_trans_rule_hw_vxlan)
c2c19dc3
HHZ		 821};
822
823int mlx4_hw_rule_sz(struct mlx4_dev *dev,
824 enum mlx4_net_trans_rule_id id)
825{
fe66bb2d 826 if (id >= MLX4_NET_TRANS_RULE_NUM) {
c2c19dc3
HHZ		 827 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
828 return -EINVAL;
829 }
830
831 return __rule_hw_sz[id];
832}
833EXPORT_SYMBOL_GPL(mlx4_hw_rule_sz);
834
0ff1fb65
HHZ		 835static int parse_trans_rule(struct mlx4_dev *dev, struct mlx4_spec_list *spec,
836 struct _rule_hw *rule_hw)
837{
c2c19dc3 838 if (mlx4_hw_rule_sz(dev, spec->id) < 0)
0ff1fb65 839 return -EINVAL;
c2c19dc3 840 memset(rule_hw, 0, mlx4_hw_rule_sz(dev, spec->id));
0ff1fb65 841 rule_hw->id = cpu_to_be16(__sw_id_hw[spec->id]);
c2c19dc3 842 rule_hw->size = mlx4_hw_rule_sz(dev, spec->id) >> 2;
0ff1fb65
HHZ		 843
844 switch (spec->id) {
845 case MLX4_NET_TRANS_RULE_ID_ETH:
846 memcpy(rule_hw->eth.dst_mac, spec->eth.dst_mac, ETH_ALEN);
847 memcpy(rule_hw->eth.dst_mac_msk, spec->eth.dst_mac_msk,
848 ETH_ALEN);
849 memcpy(rule_hw->eth.src_mac, spec->eth.src_mac, ETH_ALEN);
850 memcpy(rule_hw->eth.src_mac_msk, spec->eth.src_mac_msk,
851 ETH_ALEN);
852 if (spec->eth.ether_type_enable) {
853 rule_hw->eth.ether_type_enable = 1;
854 rule_hw->eth.ether_type = spec->eth.ether_type;
855 }
ba60a356
HHZ		 856 rule_hw->eth.vlan_tag = spec->eth.vlan_id;
857 rule_hw->eth.vlan_tag_msk = spec->eth.vlan_id_msk;
0ff1fb65
HHZ		 858 break;
859
860 case MLX4_NET_TRANS_RULE_ID_IB:
ba60a356 861 rule_hw->ib.l3_qpn = spec->ib.l3_qpn;
0ff1fb65
HHZ		 862 rule_hw->ib.qpn_mask = spec->ib.qpn_msk;
863 memcpy(&rule_hw->ib.dst_gid, &spec->ib.dst_gid, 16);
864 memcpy(&rule_hw->ib.dst_gid_msk, &spec->ib.dst_gid_msk, 16);
865 break;
866
867 case MLX4_NET_TRANS_RULE_ID_IPV6:
868 return -EOPNOTSUPP;
869
870 case MLX4_NET_TRANS_RULE_ID_IPV4:
871 rule_hw->ipv4.src_ip = spec->ipv4.src_ip;
872 rule_hw->ipv4.src_ip_msk = spec->ipv4.src_ip_msk;
873 rule_hw->ipv4.dst_ip = spec->ipv4.dst_ip;
874 rule_hw->ipv4.dst_ip_msk = spec->ipv4.dst_ip_msk;
875 break;
876
877 case MLX4_NET_TRANS_RULE_ID_TCP:
878 case MLX4_NET_TRANS_RULE_ID_UDP:
879 rule_hw->tcp_udp.dst_port = spec->tcp_udp.dst_port;
880 rule_hw->tcp_udp.dst_port_msk = spec->tcp_udp.dst_port_msk;
881 rule_hw->tcp_udp.src_port = spec->tcp_udp.src_port;
882 rule_hw->tcp_udp.src_port_msk = spec->tcp_udp.src_port_msk;
883 break;
884
7ffdf726
OG		 885 case MLX4_NET_TRANS_RULE_ID_VXLAN:
886 rule_hw->vxlan.vni =
887 cpu_to_be32(be32_to_cpu(spec->vxlan.vni) << 8);
888 rule_hw->vxlan.vni_mask =
889 cpu_to_be32(be32_to_cpu(spec->vxlan.vni_mask) << 8);
890 break;
891
0ff1fb65
HHZ		 892 default:
893 return -EINVAL;
894 }
895
896 return __rule_hw_sz[spec->id];
897}
898
899static void mlx4_err_rule(struct mlx4_dev *dev, char *str,
900 struct mlx4_net_trans_rule *rule)
901{
902#define BUF_SIZE 256
903 struct mlx4_spec_list *cur;
904 char buf[BUF_SIZE];
905 int len = 0;
906
907 mlx4_err(dev, "%s", str);
908 len += snprintf(buf + len, BUF_SIZE - len,
909 "port = %d prio = 0x%x qp = 0x%x ",
910 rule->port, rule->priority, rule->qpn);
911
912 list_for_each_entry(cur, &rule->list, list) {
913 switch (cur->id) {
914 case MLX4_NET_TRANS_RULE_ID_ETH:
915 len += snprintf(buf + len, BUF_SIZE - len,
916 "dmac = %pM ", &cur->eth.dst_mac);
917 if (cur->eth.ether_type)
918 len += snprintf(buf + len, BUF_SIZE - len,
919 "ethertype = 0x%x ",
920 be16_to_cpu(cur->eth.ether_type));
921 if (cur->eth.vlan_id)
922 len += snprintf(buf + len, BUF_SIZE - len,
923 "vlan-id = %d ",
924 be16_to_cpu(cur->eth.vlan_id));
925 break;
926
927 case MLX4_NET_TRANS_RULE_ID_IPV4:
928 if (cur->ipv4.src_ip)
929 len += snprintf(buf + len, BUF_SIZE - len,
930 "src-ip = %pI4 ",
931 &cur->ipv4.src_ip);
932 if (cur->ipv4.dst_ip)
933 len += snprintf(buf + len, BUF_SIZE - len,
934 "dst-ip = %pI4 ",
935 &cur->ipv4.dst_ip);
936 break;
937
938 case MLX4_NET_TRANS_RULE_ID_TCP:
939 case MLX4_NET_TRANS_RULE_ID_UDP:
940 if (cur->tcp_udp.src_port)
941 len += snprintf(buf + len, BUF_SIZE - len,
942 "src-port = %d ",
943 be16_to_cpu(cur->tcp_udp.src_port));
944 if (cur->tcp_udp.dst_port)
945 len += snprintf(buf + len, BUF_SIZE - len,
946 "dst-port = %d ",
947 be16_to_cpu(cur->tcp_udp.dst_port));
948 break;
949
950 case MLX4_NET_TRANS_RULE_ID_IB:
951 len += snprintf(buf + len, BUF_SIZE - len,
952 "dst-gid = %pI6\n", cur->ib.dst_gid);
953 len += snprintf(buf + len, BUF_SIZE - len,
954 "dst-gid-mask = %pI6\n",
955 cur->ib.dst_gid_msk);
956 break;
957
571e1b2c
OG		 958 case MLX4_NET_TRANS_RULE_ID_VXLAN:
959 len += snprintf(buf + len, BUF_SIZE - len,
960 "VNID = %d ", be32_to_cpu(cur->vxlan.vni));
961 break;
0ff1fb65
HHZ		 962 case MLX4_NET_TRANS_RULE_ID_IPV6:
963 break;
964
965 default:
966 break;
967 }
968 }
969 len += snprintf(buf + len, BUF_SIZE - len, "\n");
970 mlx4_err(dev, "%s", buf);
971
972 if (len >= BUF_SIZE)
1a91de28 973 mlx4_err(dev, "Network rule error message was truncated, print buffer is too small\n");
0ff1fb65
HHZ		 974}
975
976int mlx4_flow_attach(struct mlx4_dev *dev,
977 struct mlx4_net_trans_rule *rule, u64 *reg_id)
978{
979 struct mlx4_cmd_mailbox *mailbox;
980 struct mlx4_spec_list *cur;
981 u32 size = 0;
982 int ret;
983
984 mailbox = mlx4_alloc_cmd_mailbox(dev);
985 if (IS_ERR(mailbox))
986 return PTR_ERR(mailbox);
987
0ff1fb65
HHZ		 988 trans_rule_ctrl_to_hw(rule, mailbox->buf);
989
990 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
991
992 list_for_each_entry(cur, &rule->list, list) {
993 ret = parse_trans_rule(dev, cur, mailbox->buf + size);
994 if (ret < 0) {
995 mlx4_free_cmd_mailbox(dev, mailbox);
75720384 996 return ret;
0ff1fb65
HHZ		 997 }
998 size += ret;
999 }
1000
1001 ret = mlx4_QP_FLOW_STEERING_ATTACH(dev, mailbox, size >> 2, reg_id);
579d059b 1002 if (ret == -ENOMEM) {
0ff1fb65 1003 mlx4_err_rule(dev,
1a91de28 1004 "mcg table is full. Fail to register network rule\n",
0ff1fb65 1005 rule);
579d059b
MB		 1006 } else if (ret) {
1007 if (ret == -ENXIO) {
1008 if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED)
1009 mlx4_err_rule(dev,
1010 "DMFS is not enabled, "
1011 "failed to register network rule.\n",
1012 rule);
1013 else
1014 mlx4_err_rule(dev,
1015 "Rule exceeds the dmfs_high_rate_mode limitations, "
1016 "failed to register network rule.\n",
1017 rule);
1018
1019 } else {
1020 mlx4_err_rule(dev, "Fail to register network rule.\n", rule);
1021 }
1022 }
0ff1fb65
HHZ		 1023
1024 mlx4_free_cmd_mailbox(dev, mailbox);
1025
1026 return ret;
1027}
1028EXPORT_SYMBOL_GPL(mlx4_flow_attach);
1029
1030int mlx4_flow_detach(struct mlx4_dev *dev, u64 reg_id)
1031{
1032 int err;
1033
1034 err = mlx4_QP_FLOW_STEERING_DETACH(dev, reg_id);
1035 if (err)
1036 mlx4_err(dev, "Fail to detach network rule. registration id = 0x%llx\n",
1037 reg_id);
1038 return err;
1039}
1040EXPORT_SYMBOL_GPL(mlx4_flow_detach);
1041
b95089d0
OG		 1042int mlx4_tunnel_steer_add(struct mlx4_dev *dev, unsigned char *addr,
1043 int port, int qpn, u16 prio, u64 *reg_id)
1044{
1045 int err;
1046 struct mlx4_spec_list spec_eth_outer = { {NULL} };
1047 struct mlx4_spec_list spec_vxlan = { {NULL} };
1048 struct mlx4_spec_list spec_eth_inner = { {NULL} };
1049
1050 struct mlx4_net_trans_rule rule = {
1051 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
1052 .exclusive = 0,
1053 .allow_loopback = 1,
1054 .promisc_mode = MLX4_FS_REGULAR,
1055 };
1056
1057 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
1058
1059 rule.port = port;
1060 rule.qpn = qpn;
1061 rule.priority = prio;
1062 INIT_LIST_HEAD(&rule.list);
1063
1064 spec_eth_outer.id = MLX4_NET_TRANS_RULE_ID_ETH;
1065 memcpy(spec_eth_outer.eth.dst_mac, addr, ETH_ALEN);
1066 memcpy(spec_eth_outer.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
1067
1068 spec_vxlan.id = MLX4_NET_TRANS_RULE_ID_VXLAN; /* any vxlan header */
1069 spec_eth_inner.id = MLX4_NET_TRANS_RULE_ID_ETH; /* any inner eth header */
1070
1071 list_add_tail(&spec_eth_outer.list, &rule.list);
1072 list_add_tail(&spec_vxlan.list, &rule.list);
1073 list_add_tail(&spec_eth_inner.list, &rule.list);
1074
1075 err = mlx4_flow_attach(dev, &rule, reg_id);
1076 return err;
1077}
1078EXPORT_SYMBOL(mlx4_tunnel_steer_add);
1079
4de65803
MB		 1080int mlx4_FLOW_STEERING_IB_UC_QP_RANGE(struct mlx4_dev *dev, u32 min_range_qpn,
1081 u32 max_range_qpn)
1082{
1083 int err;
1084 u64 in_param;
1085
1086 in_param = ((u64) min_range_qpn) << 32;
1087 in_param |= ((u64) max_range_qpn) & 0xFFFFFFFF;
1088
1089 err = mlx4_cmd(dev, in_param, 0, 0,
1090 MLX4_FLOW_STEERING_IB_UC_QP_RANGE,
1091 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1092
1093 return err;
1094}
1095EXPORT_SYMBOL_GPL(mlx4_FLOW_STEERING_IB_UC_QP_RANGE);
1096
0345584e
YP		 1097int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1098 int block_mcast_loopback, enum mlx4_protocol prot,
1099 enum mlx4_steer_type steer)
225c7b1f
RD		 1100{
1101 struct mlx4_priv *priv = mlx4_priv(dev);
1102 struct mlx4_cmd_mailbox *mailbox;
1103 struct mlx4_mgm *mgm;
1104 u32 members_count;
225c7b1f
RD		 1105 int index, prev;
1106 int link = 0;
1107 int i;
1108 int err;
0345584e 1109 u8 port = gid[5];
b12d93d6 1110 u8 new_entry = 0;
225c7b1f
RD		 1111
1112 mailbox = mlx4_alloc_cmd_mailbox(dev);
1113 if (IS_ERR(mailbox))
1114 return PTR_ERR(mailbox);
1115 mgm = mailbox->buf;
1116
1117 mutex_lock(&priv->mcg_table.mutex);
deb8b3e8
EE		 1118 err = find_entry(dev, port, gid, prot,
1119 mailbox, &prev, &index);
225c7b1f
RD		 1120 if (err)
1121 goto out;
1122
1123 if (index != -1) {
b12d93d6
YP		 1124 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
1125 new_entry = 1;
225c7b1f 1126 memcpy(mgm->gid, gid, 16);
b12d93d6 1127 }
225c7b1f
RD		 1128 } else {
1129 link = 1;
1130
1131 index = mlx4_bitmap_alloc(&priv->mcg_table.bitmap);
1132 if (index == -1) {
1133 mlx4_err(dev, "No AMGM entries left\n");
1134 err = -ENOMEM;
1135 goto out;
1136 }
1137 index += dev->caps.num_mgms;
1138
0ec2c0f8 1139 new_entry = 1;
225c7b1f
RD		 1140 memset(mgm, 0, sizeof *mgm);
1141 memcpy(mgm->gid, gid, 16);
1142 }
1143
da995a8a 1144 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
0ec2c0f8 1145 if (members_count == dev->caps.num_qp_per_mgm) {
1a91de28 1146 mlx4_err(dev, "MGM at index %x is full\n", index);
225c7b1f
RD		 1147 err = -ENOMEM;
1148 goto out;
1149 }
1150
1151 for (i = 0; i < members_count; ++i)
521e575b 1152 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
225c7b1f
RD		 1153 mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn);
1154 err = 0;
1155 goto out;
1156 }
1157
521e575b
RL		 1158 if (block_mcast_loopback)
1159 mgm->qp[members_count++] = cpu_to_be32((qp->qpn & MGM_QPN_MASK) |
e6a17622 1160 (1U << MGM_BLCK_LB_BIT));
521e575b
RL		 1161 else
1162 mgm->qp[members_count++] = cpu_to_be32(qp->qpn & MGM_QPN_MASK);
1163
0345584e 1164 mgm->members_count = cpu_to_be32(members_count | (u32) prot << 30);
225c7b1f 1165
0345584e 1166 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
225c7b1f
RD		 1167 if (err)
1168 goto out;
1169
1170 if (!link)
1171 goto out;
1172
0345584e 1173 err = mlx4_READ_ENTRY(dev, prev, mailbox);
225c7b1f
RD		 1174 if (err)
1175 goto out;
1176
1177 mgm->next_gid_index = cpu_to_be32(index << 6);
1178
0345584e 1179 err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
225c7b1f
RD		 1180 if (err)
1181 goto out;
1182
1183out:
b12d93d6
YP		 1184 if (prot == MLX4_PROT_ETH) {
1185 /* manage the steering entry for promisc mode */
1186 if (new_entry)
23860f10
RM		 1187 err = new_steering_entry(dev, port, steer,
1188 index, qp->qpn);
b12d93d6 1189 else
23860f10
RM		 1190 err = existing_steering_entry(dev, port, steer,
1191 index, qp->qpn);
b12d93d6 1192 }
225c7b1f
RD		 1193 if (err && link && index != -1) {
1194 if (index < dev->caps.num_mgms)
1a91de28 1195 mlx4_warn(dev, "Got AMGM index %d < %d\n",
225c7b1f
RD		 1196 index, dev->caps.num_mgms);
1197 else
1198 mlx4_bitmap_free(&priv->mcg_table.bitmap,
7c6d74d2 1199 index - dev->caps.num_mgms, MLX4_USE_RR);
225c7b1f
RD		 1200 }
1201 mutex_unlock(&priv->mcg_table.mutex);
1202
1203 mlx4_free_cmd_mailbox(dev, mailbox);
1204 return err;
1205}
225c7b1f 1206
0345584e
YP		 1207int mlx4_qp_detach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1208 enum mlx4_protocol prot, enum mlx4_steer_type steer)
225c7b1f
RD		 1209{
1210 struct mlx4_priv *priv = mlx4_priv(dev);
1211 struct mlx4_cmd_mailbox *mailbox;
1212 struct mlx4_mgm *mgm;
1213 u32 members_count;
225c7b1f 1214 int prev, index;
aab2bb0e 1215 int i, loc = -1;
225c7b1f 1216 int err;
0345584e 1217 u8 port = gid[5];
b12d93d6 1218 bool removed_entry = false;
225c7b1f
RD		 1219
1220 mailbox = mlx4_alloc_cmd_mailbox(dev);
1221 if (IS_ERR(mailbox))
1222 return PTR_ERR(mailbox);
1223 mgm = mailbox->buf;
1224
1225 mutex_lock(&priv->mcg_table.mutex);
1226
deb8b3e8
EE		 1227 err = find_entry(dev, port, gid, prot,
1228 mailbox, &prev, &index);
225c7b1f
RD		 1229 if (err)
1230 goto out;
1231
1232 if (index == -1) {
5b095d98 1233 mlx4_err(dev, "MGID %pI6 not found\n", gid);
225c7b1f
RD		 1234 err = -EINVAL;
1235 goto out;
1236 }
1237
1645a540
SM		 1238 /* If this QP is also a promisc QP, it shouldn't be removed only if
1239 * at least one none promisc QP is also attached to this MCG
1240 */
b12d93d6 1241 if (prot == MLX4_PROT_ETH &&
1645a540
SM		 1242 check_duplicate_entry(dev, port, steer, index, qp->qpn) &&
1243 !promisc_steering_entry(dev, port, steer, index, qp->qpn, NULL))
1244 goto out;
b12d93d6 1245
da995a8a 1246 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
aab2bb0e
DB		 1247 for (i = 0; i < members_count; ++i)
1248 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
225c7b1f 1249 loc = i;
aab2bb0e
DB		 1250 break;
1251 }
225c7b1f
RD		 1252
1253 if (loc == -1) {
1254 mlx4_err(dev, "QP %06x not found in MGM\n", qp->qpn);
1255 err = -EINVAL;
1256 goto out;
1257 }
1258
aab2bb0e
DB		 1259 /* copy the last QP in this MGM over removed QP */
1260 mgm->qp[loc] = mgm->qp[members_count - 1];
1261 mgm->qp[members_count - 1] = 0;
0345584e 1262 mgm->members_count = cpu_to_be32(--members_count | (u32) prot << 30);
225c7b1f 1263
b12d93d6 1264 if (prot == MLX4_PROT_ETH)
0ec2c0f8
EE		 1265 removed_entry = can_remove_steering_entry(dev, port, steer,
1266 index, qp->qpn);
aab2bb0e 1267 if (members_count && (prot != MLX4_PROT_ETH || !removed_entry)) {
0345584e 1268 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
225c7b1f 1269 goto out;
4dc51b32 1270 }
225c7b1f 1271
b12d93d6
YP		 1272 /* We are going to delete the entry, members count should be 0 */
1273 mgm->members_count = cpu_to_be32((u32) prot << 30);
1274
225c7b1f
RD		 1275 if (prev == -1) {
1276 /* Remove entry from MGM */
1277 int amgm_index = be32_to_cpu(mgm->next_gid_index) >> 6;
1278 if (amgm_index) {
0345584e 1279 err = mlx4_READ_ENTRY(dev, amgm_index, mailbox);
225c7b1f
RD		 1280 if (err)
1281 goto out;
1282 } else
1283 memset(mgm->gid, 0, 16);
1284
0345584e 1285 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
225c7b1f
RD		 1286 if (err)
1287 goto out;
1288
1289 if (amgm_index) {
1290 if (amgm_index < dev->caps.num_mgms)
1a91de28 1291 mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d\n",
225c7b1f
RD		 1292 index, amgm_index, dev->caps.num_mgms);
1293 else
1294 mlx4_bitmap_free(&priv->mcg_table.bitmap,
7c6d74d2 1295 amgm_index - dev->caps.num_mgms, MLX4_USE_RR);
225c7b1f
RD		 1296 }
1297 } else {
1298 /* Remove entry from AMGM */
1299 int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
0345584e 1300 err = mlx4_READ_ENTRY(dev, prev, mailbox);
225c7b1f
RD		 1301 if (err)
1302 goto out;
1303
1304 mgm->next_gid_index = cpu_to_be32(cur_next_index << 6);
1305
0345584e 1306 err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
225c7b1f
RD		 1307 if (err)
1308 goto out;
1309
1310 if (index < dev->caps.num_mgms)
1a91de28 1311 mlx4_warn(dev, "entry %d had next AMGM index %d < %d\n",
225c7b1f
RD		 1312 prev, index, dev->caps.num_mgms);
1313 else
1314 mlx4_bitmap_free(&priv->mcg_table.bitmap,
7c6d74d2 1315 index - dev->caps.num_mgms, MLX4_USE_RR);
225c7b1f
RD		 1316 }
1317
1318out:
1319 mutex_unlock(&priv->mcg_table.mutex);
1320
1321 mlx4_free_cmd_mailbox(dev, mailbox);
f5aef5aa
YH		 1322 if (err && dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
1323 /* In case device is under an error, return success as a closing command */
1324 err = 0;
225c7b1f
RD		 1325 return err;
1326}
0345584e 1327
0ec2c0f8
EE		 1328static int mlx4_QP_ATTACH(struct mlx4_dev *dev, struct mlx4_qp *qp,
1329 u8 gid[16], u8 attach, u8 block_loopback,
1330 enum mlx4_protocol prot)
1331{
1332 struct mlx4_cmd_mailbox *mailbox;
1333 int err = 0;
1334 int qpn;
1335
1336 if (!mlx4_is_mfunc(dev))
1337 return -EBADF;
1338
1339 mailbox = mlx4_alloc_cmd_mailbox(dev);
1340 if (IS_ERR(mailbox))
1341 return PTR_ERR(mailbox);
1342
1343 memcpy(mailbox->buf, gid, 16);
1344 qpn = qp->qpn;
1345 qpn |= (prot << 28);
1346 if (attach && block_loopback)
1347 qpn |= (1 << 31);
1348
1349 err = mlx4_cmd(dev, mailbox->dma, qpn, attach,
1350 MLX4_CMD_QP_ATTACH, MLX4_CMD_TIME_CLASS_A,
1351 MLX4_CMD_WRAPPED);
1352
1353 mlx4_free_cmd_mailbox(dev, mailbox);
0cd93027
YH		 1354 if (err && !attach &&
1355 dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
1356 err = 0;
0ec2c0f8
EE		 1357 return err;
1358}
0345584e 1359
fd91c49f
HHZ		 1360int mlx4_trans_to_dmfs_attach(struct mlx4_dev *dev, struct mlx4_qp *qp,
1361 u8 gid[16], u8 port,
1362 int block_mcast_loopback,
1363 enum mlx4_protocol prot, u64 *reg_id)
0345584e 1364{
0ff1fb65
HHZ		 1365 struct mlx4_spec_list spec = { {NULL} };
1366 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
1367
1368 struct mlx4_net_trans_rule rule = {
1369 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
1370 .exclusive = 0,
f9162539 1371 .promisc_mode = MLX4_FS_REGULAR,
0ff1fb65
HHZ		 1372 .priority = MLX4_DOMAIN_NIC,
1373 };
1374
248c62aa 1375 rule.allow_loopback = !block_mcast_loopback;
0ff1fb65
HHZ		 1376 rule.port = port;
1377 rule.qpn = qp->qpn;
1378 INIT_LIST_HEAD(&rule.list);
1379
1380 switch (prot) {
1381 case MLX4_PROT_ETH:
1382 spec.id = MLX4_NET_TRANS_RULE_ID_ETH;
1383 memcpy(spec.eth.dst_mac, &gid[10], ETH_ALEN);
1384 memcpy(spec.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
1385 break;
1386
1387 case MLX4_PROT_IB_IPV6:
1388 spec.id = MLX4_NET_TRANS_RULE_ID_IB;
1389 memcpy(spec.ib.dst_gid, gid, 16);
1390 memset(&spec.ib.dst_gid_msk, 0xff, 16);
1391 break;
1392 default:
1393 return -EINVAL;
1394 }
1395 list_add_tail(&spec.list, &rule.list);
1396
1397 return mlx4_flow_attach(dev, &rule, reg_id);
fd91c49f
HHZ		 1398}
1399
1400int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1401 u8 port, int block_mcast_loopback,
1402 enum mlx4_protocol prot, u64 *reg_id)
1403{
1404 switch (dev->caps.steering_mode) {
1405 case MLX4_STEERING_MODE_A0:
1406 if (prot == MLX4_PROT_ETH)
1407 return 0;
1408
1409 case MLX4_STEERING_MODE_B0:
1410 if (prot == MLX4_PROT_ETH)
1411 gid[7] |= (MLX4_MC_STEER << 1);
1412
1413 if (mlx4_is_mfunc(dev))
1414 return mlx4_QP_ATTACH(dev, qp, gid, 1,
1415 block_mcast_loopback, prot);
1416 return mlx4_qp_attach_common(dev, qp, gid,
1417 block_mcast_loopback, prot,
1418 MLX4_MC_STEER);
0ff1fb65 1419
fd91c49f
HHZ		 1420 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1421 return mlx4_trans_to_dmfs_attach(dev, qp, gid, port,
1422 block_mcast_loopback,
1423 prot, reg_id);
c96d97f4
HHZ		 1424 default:
1425 return -EINVAL;
1426 }
0345584e
YP		 1427}
1428EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
1429
1430int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
0ff1fb65 1431 enum mlx4_protocol prot, u64 reg_id)
0345584e 1432{
c96d97f4
HHZ		 1433 switch (dev->caps.steering_mode) {
1434 case MLX4_STEERING_MODE_A0:
1435 if (prot == MLX4_PROT_ETH)
1436 return 0;
0345584e 1437
c96d97f4
HHZ		 1438 case MLX4_STEERING_MODE_B0:
1439 if (prot == MLX4_PROT_ETH)
1440 gid[7] |= (MLX4_MC_STEER << 1);
0ec2c0f8 1441
c96d97f4
HHZ		 1442 if (mlx4_is_mfunc(dev))
1443 return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
1444
1445 return mlx4_qp_detach_common(dev, qp, gid, prot,
1446 MLX4_MC_STEER);
0345584e 1447
0ff1fb65
HHZ		 1448 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1449 return mlx4_flow_detach(dev, reg_id);
1450
c96d97f4
HHZ		 1451 default:
1452 return -EINVAL;
1453 }
0345584e 1454}
225c7b1f
RD		 1455EXPORT_SYMBOL_GPL(mlx4_multicast_detach);
1456
592e49dd
HHZ		 1457int mlx4_flow_steer_promisc_add(struct mlx4_dev *dev, u8 port,
1458 u32 qpn, enum mlx4_net_trans_promisc_mode mode)
1459{
1460 struct mlx4_net_trans_rule rule;
1461 u64 *regid_p;
1462
1463 switch (mode) {
f9162539 1464 case MLX4_FS_ALL_DEFAULT:
592e49dd
HHZ		 1465 regid_p = &dev->regid_promisc_array[port];
1466 break;
f9162539 1467 case MLX4_FS_MC_DEFAULT:
592e49dd
HHZ		 1468 regid_p = &dev->regid_allmulti_array[port];
1469 break;
1470 default:
1471 return -1;
1472 }
1473
1474 if (*regid_p != 0)
1475 return -1;
1476
1477 rule.promisc_mode = mode;
1478 rule.port = port;
1479 rule.qpn = qpn;
1480 INIT_LIST_HEAD(&rule.list);
1481 mlx4_err(dev, "going promisc on %x\n", port);
1482
1483 return mlx4_flow_attach(dev, &rule, regid_p);
1484}
1485EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_add);
1486
1487int mlx4_flow_steer_promisc_remove(struct mlx4_dev *dev, u8 port,
1488 enum mlx4_net_trans_promisc_mode mode)
1489{
1490 int ret;
1491 u64 *regid_p;
1492
1493 switch (mode) {
f9162539 1494 case MLX4_FS_ALL_DEFAULT:
592e49dd
HHZ		 1495 regid_p = &dev->regid_promisc_array[port];
1496 break;
f9162539 1497 case MLX4_FS_MC_DEFAULT:
592e49dd
HHZ		 1498 regid_p = &dev->regid_allmulti_array[port];
1499 break;
1500 default:
1501 return -1;
1502 }
1503
1504 if (*regid_p == 0)
1505 return -1;
1506
1507 ret = mlx4_flow_detach(dev, *regid_p);
1508 if (ret == 0)
1509 *regid_p = 0;
1510
1511 return ret;
1512}
1513EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_remove);
1514
ffe455ad 1515int mlx4_unicast_attach(struct mlx4_dev *dev,
0ec2c0f8
EE		 1516 struct mlx4_qp *qp, u8 gid[16],
1517 int block_mcast_loopback, enum mlx4_protocol prot)
1518{
0ec2c0f8
EE		 1519 if (prot == MLX4_PROT_ETH)
1520 gid[7] |= (MLX4_UC_STEER << 1);
1521
1522 if (mlx4_is_mfunc(dev))
1523 return mlx4_QP_ATTACH(dev, qp, gid, 1,
1524 block_mcast_loopback, prot);
1525
1526 return mlx4_qp_attach_common(dev, qp, gid, block_mcast_loopback,
1527 prot, MLX4_UC_STEER);
1528}
1529EXPORT_SYMBOL_GPL(mlx4_unicast_attach);
1530
ffe455ad 1531int mlx4_unicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp,
0ec2c0f8
EE		 1532 u8 gid[16], enum mlx4_protocol prot)
1533{
0ec2c0f8
EE		 1534 if (prot == MLX4_PROT_ETH)
1535 gid[7] |= (MLX4_UC_STEER << 1);
1536
1537 if (mlx4_is_mfunc(dev))
1538 return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
1539
1540 return mlx4_qp_detach_common(dev, qp, gid, prot, MLX4_UC_STEER);
1541}
1542EXPORT_SYMBOL_GPL(mlx4_unicast_detach);
1543
1544int mlx4_PROMISC_wrapper(struct mlx4_dev *dev, int slave,
1545 struct mlx4_vhcr *vhcr,
1546 struct mlx4_cmd_mailbox *inbox,
1547 struct mlx4_cmd_mailbox *outbox,
1548 struct mlx4_cmd_info *cmd)
1549{
1550 u32 qpn = (u32) vhcr->in_param & 0xffffffff;
449fc488 1551 int port = mlx4_slave_convert_port(dev, slave, vhcr->in_param >> 62);
0ec2c0f8
EE		 1552 enum mlx4_steer_type steer = vhcr->in_modifier;
1553
449fc488
MB		 1554 if (port < 0)
1555 return -EINVAL;
1556
0ec2c0f8
EE		 1557 /* Promiscuous unicast is not allowed in mfunc */
1558 if (mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)
1559 return 0;
1560
1561 if (vhcr->op_modifier)
1562 return add_promisc_qp(dev, port, steer, qpn);
1563 else
1564 return remove_promisc_qp(dev, port, steer, qpn);
1565}
1566
1567static int mlx4_PROMISC(struct mlx4_dev *dev, u32 qpn,
1568 enum mlx4_steer_type steer, u8 add, u8 port)
1569{
1570 return mlx4_cmd(dev, (u64) qpn | (u64) port << 62, (u32) steer, add,
1571 MLX4_CMD_PROMISC, MLX4_CMD_TIME_CLASS_A,
1572 MLX4_CMD_WRAPPED);
1573}
b12d93d6
YP		 1574
1575int mlx4_multicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1576{
0ec2c0f8
EE		 1577 if (mlx4_is_mfunc(dev))
1578 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 1, port);
b12d93d6 1579
0ec2c0f8 1580 return add_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
b12d93d6
YP		 1581}
1582EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_add);
1583
1584int mlx4_multicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1585{
0ec2c0f8
EE		 1586 if (mlx4_is_mfunc(dev))
1587 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 0, port);
b12d93d6 1588
0ec2c0f8 1589 return remove_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
b12d93d6
YP		 1590}
1591EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_remove);
1592
1593int mlx4_unicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1594{
0ec2c0f8
EE		 1595 if (mlx4_is_mfunc(dev))
1596 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 1, port);
b12d93d6 1597
0ec2c0f8 1598 return add_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
b12d93d6
YP		 1599}
1600EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_add);
1601
1602int mlx4_unicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1603{
0ec2c0f8
EE		 1604 if (mlx4_is_mfunc(dev))
1605 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 0, port);
1606
1607 return remove_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
b12d93d6
YP		 1608}
1609EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_remove);
1610
3d73c288 1611int mlx4_init_mcg_table(struct mlx4_dev *dev)
225c7b1f
RD		 1612{
1613 struct mlx4_priv *priv = mlx4_priv(dev);
1614 int err;
1615
0ff1fb65
HHZ		 1616 /* No need for mcg_table when fw managed the mcg table*/
1617 if (dev->caps.steering_mode ==
1618 MLX4_STEERING_MODE_DEVICE_MANAGED)
1619 return 0;
93fc9e1b
YP		 1620 err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms,
1621 dev->caps.num_amgms - 1, 0, 0);
225c7b1f
RD		 1622 if (err)
1623 return err;
1624
1625 mutex_init(&priv->mcg_table.mutex);
1626
1627 return 0;
1628}
1629
1630void mlx4_cleanup_mcg_table(struct mlx4_dev *dev)
1631{
0ff1fb65
HHZ		 1632 if (dev->caps.steering_mode !=
1633 MLX4_STEERING_MODE_DEVICE_MANAGED)
1634 mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap);
225c7b1f 1635}
Linux kernel - Deliverables
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