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WIP FPC-III support
[linux/fpc-iii.git] / drivers / net / ethernet / mellanox / mlx4 / mcg.c
blobf1b4ad9c66d2166d73999ef1684d8d832400bf67
1 /*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34 #include <linux/string.h>
35 #include <linux/etherdevice.h>
36
37 #include <linux/mlx4/cmd.h>
38 #include <linux/mlx4/qp.h>
39 #include <linux/export.h>
40
41 #include "mlx4.h"
42
43 int mlx4_get_mgm_entry_size(struct mlx4_dev *dev)
44 {
45 return 1 << dev->oper_log_mgm_entry_size;
46 }
47
48 int mlx4_get_qp_per_mgm(struct mlx4_dev *dev)
49 {
50 return 4 * (mlx4_get_mgm_entry_size(dev) / 16 - 2);
51 }
52
53 static int mlx4_QP_FLOW_STEERING_ATTACH(struct mlx4_dev *dev,
54 struct mlx4_cmd_mailbox *mailbox,
55 u32 size,
56 u64 *reg_id)
57 {
58 u64 imm;
59 int err = 0;
60
61 err = mlx4_cmd_imm(dev, mailbox->dma, &imm, size, 0,
62 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
63 MLX4_CMD_NATIVE);
64 if (err)
65 return err;
66 *reg_id = imm;
67
68 return err;
69 }
70
71 static int mlx4_QP_FLOW_STEERING_DETACH(struct mlx4_dev *dev, u64 regid)
72 {
73 int err = 0;
74
75 err = mlx4_cmd(dev, regid, 0, 0,
76 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
77 MLX4_CMD_NATIVE);
78
79 return err;
80 }
81
82 static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index,
83 struct mlx4_cmd_mailbox *mailbox)
84 {
85 return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG,
86 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
87 }
88
89 static int mlx4_WRITE_ENTRY(struct mlx4_dev *dev, int index,
90 struct mlx4_cmd_mailbox *mailbox)
91 {
92 return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG,
93 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
94 }
95
96 static int mlx4_WRITE_PROMISC(struct mlx4_dev *dev, u8 port, u8 steer,
97 struct mlx4_cmd_mailbox *mailbox)
98 {
99 u32 in_mod;
100
101 in_mod = (u32) port << 16 | steer << 1;
102 return mlx4_cmd(dev, mailbox->dma, in_mod, 0x1,
103 MLX4_CMD_WRITE_MCG, MLX4_CMD_TIME_CLASS_A,
104 MLX4_CMD_NATIVE);
105 }
106
107 static int mlx4_GID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
108 u16 *hash, u8 op_mod)
109 {
110 u64 imm;
111 int err;
112
113 err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, op_mod,
114 MLX4_CMD_MGID_HASH, MLX4_CMD_TIME_CLASS_A,
115 MLX4_CMD_NATIVE);
116
117 if (!err)
118 *hash = imm;
119
120 return err;
121 }
122
123 static struct mlx4_promisc_qp *get_promisc_qp(struct mlx4_dev *dev, u8 port,
124 enum mlx4_steer_type steer,
125 u32 qpn)
126 {
127 struct mlx4_steer *s_steer;
128 struct mlx4_promisc_qp *pqp;
129
130 if (port < 1 || port > dev->caps.num_ports)
131 return NULL;
132
133 s_steer = &mlx4_priv(dev)->steer[port - 1];
134
135 list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
136 if (pqp->qpn == qpn)
137 return pqp;
138 }
139 /* not found */
140 return NULL;
141 }
142
143 /*
144 * Add new entry to steering data structure.
145 * All promisc QPs should be added as well
146 */
147 static int new_steering_entry(struct mlx4_dev *dev, u8 port,
148 enum mlx4_steer_type steer,
149 unsigned int index, u32 qpn)
150 {
151 struct mlx4_steer *s_steer;
152 struct mlx4_cmd_mailbox *mailbox;
153 struct mlx4_mgm *mgm;
154 u32 members_count;
155 struct mlx4_steer_index *new_entry;
156 struct mlx4_promisc_qp *pqp;
157 struct mlx4_promisc_qp *dqp = NULL;
158 u32 prot;
159 int err;
160
161 if (port < 1 || port > dev->caps.num_ports)
162 return -EINVAL;
163
164 s_steer = &mlx4_priv(dev)->steer[port - 1];
165 new_entry = kzalloc(sizeof(*new_entry), GFP_KERNEL);
166 if (!new_entry)
167 return -ENOMEM;
168
169 INIT_LIST_HEAD(&new_entry->duplicates);
170 new_entry->index = index;
171 list_add_tail(&new_entry->list, &s_steer->steer_entries[steer]);
172
173 /* If the given qpn is also a promisc qp,
174 * it should be inserted to duplicates list
175 */
176 pqp = get_promisc_qp(dev, port, steer, qpn);
177 if (pqp) {
178 dqp = kmalloc(sizeof(*dqp), GFP_KERNEL);
179 if (!dqp) {
180 err = -ENOMEM;
181 goto out_alloc;
182 }
183 dqp->qpn = qpn;
184 list_add_tail(&dqp->list, &new_entry->duplicates);
185 }
186
187 /* if no promisc qps for this vep, we are done */
188 if (list_empty(&s_steer->promisc_qps[steer]))
189 return 0;
190
191 /* now need to add all the promisc qps to the new
192 * steering entry, as they should also receive the packets
193 * destined to this address */
194 mailbox = mlx4_alloc_cmd_mailbox(dev);
195 if (IS_ERR(mailbox)) {
196 err = -ENOMEM;
197 goto out_alloc;
198 }
199 mgm = mailbox->buf;
200
201 err = mlx4_READ_ENTRY(dev, index, mailbox);
202 if (err)
203 goto out_mailbox;
204
205 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
206 prot = be32_to_cpu(mgm->members_count) >> 30;
207 list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
208 /* don't add already existing qpn */
209 if (pqp->qpn == qpn)
210 continue;
211 if (members_count == dev->caps.num_qp_per_mgm) {
212 /* out of space */
213 err = -ENOMEM;
214 goto out_mailbox;
215 }
216
217 /* add the qpn */
218 mgm->qp[members_count++] = cpu_to_be32(pqp->qpn & MGM_QPN_MASK);
219 }
220 /* update the qps count and update the entry with all the promisc qps*/
221 mgm->members_count = cpu_to_be32(members_count | (prot << 30));
222 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
223
224 out_mailbox:
225 mlx4_free_cmd_mailbox(dev, mailbox);
226 if (!err)
227 return 0;
228 out_alloc:
229 if (dqp) {
230 list_del(&dqp->list);
231 kfree(dqp);
232 }
233 list_del(&new_entry->list);
234 kfree(new_entry);
235 return err;
236 }
237
238 /* update the data structures with existing steering entry */
239 static int existing_steering_entry(struct mlx4_dev *dev, u8 port,
240 enum mlx4_steer_type steer,
241 unsigned int index, u32 qpn)
242 {
243 struct mlx4_steer *s_steer;
244 struct mlx4_steer_index *tmp_entry, *entry = NULL;
245 struct mlx4_promisc_qp *pqp;
246 struct mlx4_promisc_qp *dqp;
247
248 if (port < 1 || port > dev->caps.num_ports)
249 return -EINVAL;
250
251 s_steer = &mlx4_priv(dev)->steer[port - 1];
252
253 pqp = get_promisc_qp(dev, port, steer, qpn);
254 if (!pqp)
255 return 0; /* nothing to do */
256
257 list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
258 if (tmp_entry->index == index) {
259 entry = tmp_entry;
260 break;
261 }
262 }
263 if (unlikely(!entry)) {
264 mlx4_warn(dev, "Steering entry at index %x is not registered\n", index);
265 return -EINVAL;
266 }
267
268 /* the given qpn is listed as a promisc qpn
269 * we need to add it as a duplicate to this entry
270 * for future references */
271 list_for_each_entry(dqp, &entry->duplicates, list) {
272 if (qpn == dqp->qpn)
273 return 0; /* qp is already duplicated */
274 }
275
276 /* add the qp as a duplicate on this index */
277 dqp = kmalloc(sizeof(*dqp), GFP_KERNEL);
278 if (!dqp)
279 return -ENOMEM;
280 dqp->qpn = qpn;
281 list_add_tail(&dqp->list, &entry->duplicates);
282
283 return 0;
284 }
285
286 /* Check whether a qpn is a duplicate on steering entry
287 * If so, it should not be removed from mgm */
288 static bool check_duplicate_entry(struct mlx4_dev *dev, u8 port,
289 enum mlx4_steer_type steer,
290 unsigned int index, u32 qpn)
291 {
292 struct mlx4_steer *s_steer;
293 struct mlx4_steer_index *tmp_entry, *entry = NULL;
294 struct mlx4_promisc_qp *dqp, *tmp_dqp;
295
296 if (port < 1 || port > dev->caps.num_ports)
297 return NULL;
298
299 s_steer = &mlx4_priv(dev)->steer[port - 1];
300
301 /* if qp is not promisc, it cannot be duplicated */
302 if (!get_promisc_qp(dev, port, steer, qpn))
303 return false;
304
305 /* The qp is promisc qp so it is a duplicate on this index
306 * Find the index entry, and remove the duplicate */
307 list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
308 if (tmp_entry->index == index) {
309 entry = tmp_entry;
310 break;
311 }
312 }
313 if (unlikely(!entry)) {
314 mlx4_warn(dev, "Steering entry for index %x is not registered\n", index);
315 return false;
316 }
317 list_for_each_entry_safe(dqp, tmp_dqp, &entry->duplicates, list) {
318 if (dqp->qpn == qpn) {
319 list_del(&dqp->list);
320 kfree(dqp);
321 }
322 }
323 return true;
324 }
325
326 /* Returns true if all the QPs != tqpn contained in this entry
327 * are Promisc QPs. Returns false otherwise.
328 */
329 static bool promisc_steering_entry(struct mlx4_dev *dev, u8 port,
330 enum mlx4_steer_type steer,
331 unsigned int index, u32 tqpn,
332 u32 *members_count)
333 {
334 struct mlx4_cmd_mailbox *mailbox;
335 struct mlx4_mgm *mgm;
336 u32 m_count;
337 bool ret = false;
338 int i;
339
340 if (port < 1 || port > dev->caps.num_ports)
341 return false;
342
343 mailbox = mlx4_alloc_cmd_mailbox(dev);
344 if (IS_ERR(mailbox))
345 return false;
346 mgm = mailbox->buf;
347
348 if (mlx4_READ_ENTRY(dev, index, mailbox))
349 goto out;
350 m_count = be32_to_cpu(mgm->members_count) & 0xffffff;
351 if (members_count)
352 *members_count = m_count;
353
354 for (i = 0; i < m_count; i++) {
355 u32 qpn = be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK;
356 if (!get_promisc_qp(dev, port, steer, qpn) && qpn != tqpn) {
357 /* the qp is not promisc, the entry can't be removed */
358 goto out;
359 }
360 }
361 ret = true;
362 out:
363 mlx4_free_cmd_mailbox(dev, mailbox);
364 return ret;
365 }
366
367 /* IF a steering entry contains only promisc QPs, it can be removed. */
368 static bool can_remove_steering_entry(struct mlx4_dev *dev, u8 port,
369 enum mlx4_steer_type steer,
370 unsigned int index, u32 tqpn)
371 {
372 struct mlx4_steer *s_steer;
373 struct mlx4_steer_index *entry = NULL, *tmp_entry;
374 u32 members_count;
375 bool ret = false;
376
377 if (port < 1 || port > dev->caps.num_ports)
378 return NULL;
379
380 s_steer = &mlx4_priv(dev)->steer[port - 1];
381
382 if (!promisc_steering_entry(dev, port, steer, index,
383 tqpn, &members_count))
384 goto out;
385
386 /* All the qps currently registered for this entry are promiscuous,
387 * Checking for duplicates */
388 ret = true;
389 list_for_each_entry_safe(entry, tmp_entry, &s_steer->steer_entries[steer], list) {
390 if (entry->index == index) {
391 if (list_empty(&entry->duplicates) ||
392 members_count == 1) {
393 struct mlx4_promisc_qp *pqp, *tmp_pqp;
394 /* If there is only 1 entry in duplicates then
395 * this is the QP we want to delete, going over
396 * the list and deleting the entry.
397 */
398 list_del(&entry->list);
399 list_for_each_entry_safe(pqp, tmp_pqp,
400 &entry->duplicates,
401 list) {
402 list_del(&pqp->list);
403 kfree(pqp);
404 }
405 kfree(entry);
406 } else {
407 /* This entry contains duplicates so it shouldn't be removed */
408 ret = false;
409 goto out;
410 }
411 }
412 }
413
414 out:
415 return ret;
416 }
417
418 static int add_promisc_qp(struct mlx4_dev *dev, u8 port,
419 enum mlx4_steer_type steer, u32 qpn)
420 {
421 struct mlx4_steer *s_steer;
422 struct mlx4_cmd_mailbox *mailbox;
423 struct mlx4_mgm *mgm;
424 struct mlx4_steer_index *entry;
425 struct mlx4_promisc_qp *pqp;
426 struct mlx4_promisc_qp *dqp;
427 u32 members_count;
428 u32 prot;
429 int i;
430 bool found;
431 int err;
432 struct mlx4_priv *priv = mlx4_priv(dev);
433
434 if (port < 1 || port > dev->caps.num_ports)
435 return -EINVAL;
436
437 s_steer = &mlx4_priv(dev)->steer[port - 1];
438
439 mutex_lock(&priv->mcg_table.mutex);
440
441 if (get_promisc_qp(dev, port, steer, qpn)) {
442 err = 0; /* Noting to do, already exists */
443 goto out_mutex;
444 }
445
446 pqp = kmalloc(sizeof(*pqp), GFP_KERNEL);
447 if (!pqp) {
448 err = -ENOMEM;
449 goto out_mutex;
450 }
451 pqp->qpn = qpn;
452
453 mailbox = mlx4_alloc_cmd_mailbox(dev);
454 if (IS_ERR(mailbox)) {
455 err = -ENOMEM;
456 goto out_alloc;
457 }
458 mgm = mailbox->buf;
459
460 if (!(mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)) {
461 /* The promisc QP needs to be added for each one of the steering
462 * entries. If it already exists, needs to be added as
463 * a duplicate for this entry.
464 */
465 list_for_each_entry(entry,
466 &s_steer->steer_entries[steer],
467 list) {
468 err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
469 if (err)
470 goto out_mailbox;
471
472 members_count = be32_to_cpu(mgm->members_count) &
473 0xffffff;
474 prot = be32_to_cpu(mgm->members_count) >> 30;
475 found = false;
476 for (i = 0; i < members_count; i++) {
477 if ((be32_to_cpu(mgm->qp[i]) &
478 MGM_QPN_MASK) == qpn) {
479 /* Entry already exists.
480 * Add to duplicates.
481 */
482 dqp = kmalloc(sizeof(*dqp), GFP_KERNEL);
483 if (!dqp) {
484 err = -ENOMEM;
485 goto out_mailbox;
486 }
487 dqp->qpn = qpn;
488 list_add_tail(&dqp->list,
489 &entry->duplicates);
490 found = true;
491 }
492 }
493 if (!found) {
494 /* Need to add the qpn to mgm */
495 if (members_count ==
496 dev->caps.num_qp_per_mgm) {
497 /* entry is full */
498 err = -ENOMEM;
499 goto out_mailbox;
500 }
501 mgm->qp[members_count++] =
502 cpu_to_be32(qpn & MGM_QPN_MASK);
503 mgm->members_count =
504 cpu_to_be32(members_count |
505 (prot << 30));
506 err = mlx4_WRITE_ENTRY(dev, entry->index,
507 mailbox);
508 if (err)
509 goto out_mailbox;
510 }
511 }
512 }
513
514 /* add the new qpn to list of promisc qps */
515 list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
516 /* now need to add all the promisc qps to default entry */
517 memset(mgm, 0, sizeof(*mgm));
518 members_count = 0;
519 list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list) {
520 if (members_count == dev->caps.num_qp_per_mgm) {
521 /* entry is full */
522 err = -ENOMEM;
523 goto out_list;
524 }
525 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
526 }
527 mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
528
529 err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
530 if (err)
531 goto out_list;
532
533 mlx4_free_cmd_mailbox(dev, mailbox);
534 mutex_unlock(&priv->mcg_table.mutex);
535 return 0;
536
537 out_list:
538 list_del(&pqp->list);
539 out_mailbox:
540 mlx4_free_cmd_mailbox(dev, mailbox);
541 out_alloc:
542 kfree(pqp);
543 out_mutex:
544 mutex_unlock(&priv->mcg_table.mutex);
545 return err;
546 }
547
548 static int remove_promisc_qp(struct mlx4_dev *dev, u8 port,
549 enum mlx4_steer_type steer, u32 qpn)
550 {
551 struct mlx4_priv *priv = mlx4_priv(dev);
552 struct mlx4_steer *s_steer;
553 struct mlx4_cmd_mailbox *mailbox;
554 struct mlx4_mgm *mgm;
555 struct mlx4_steer_index *entry, *tmp_entry;
556 struct mlx4_promisc_qp *pqp;
557 struct mlx4_promisc_qp *dqp;
558 u32 members_count;
559 bool found;
560 bool back_to_list = false;
561 int i;
562 int err;
563
564 if (port < 1 || port > dev->caps.num_ports)
565 return -EINVAL;
566
567 s_steer = &mlx4_priv(dev)->steer[port - 1];
568 mutex_lock(&priv->mcg_table.mutex);
569
570 pqp = get_promisc_qp(dev, port, steer, qpn);
571 if (unlikely(!pqp)) {
572 mlx4_warn(dev, "QP %x is not promiscuous QP\n", qpn);
573 /* nothing to do */
574 err = 0;
575 goto out_mutex;
576 }
577
578 /*remove from list of promisc qps */
579 list_del(&pqp->list);
580
581 /* set the default entry not to include the removed one */
582 mailbox = mlx4_alloc_cmd_mailbox(dev);
583 if (IS_ERR(mailbox)) {
584 err = -ENOMEM;
585 back_to_list = true;
586 goto out_list;
587 }
588 mgm = mailbox->buf;
589 members_count = 0;
590 list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
591 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
592 mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
593
594 err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
595 if (err)
596 goto out_mailbox;
597
598 if (!(mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)) {
599 /* Remove the QP from all the steering entries */
600 list_for_each_entry_safe(entry, tmp_entry,
601 &s_steer->steer_entries[steer],
602 list) {
603 found = false;
604 list_for_each_entry(dqp, &entry->duplicates, list) {
605 if (dqp->qpn == qpn) {
606 found = true;
607 break;
608 }
609 }
610 if (found) {
611 /* A duplicate, no need to change the MGM,
612 * only update the duplicates list
613 */
614 list_del(&dqp->list);
615 kfree(dqp);
616 } else {
617 int loc = -1;
618
619 err = mlx4_READ_ENTRY(dev,
620 entry->index,
621 mailbox);
622 if (err)
623 goto out_mailbox;
624 members_count =
625 be32_to_cpu(mgm->members_count) &
626 0xffffff;
627 if (!members_count) {
628 mlx4_warn(dev, "QP %06x wasn't found in entry %x mcount=0. deleting entry...\n",
629 qpn, entry->index);
630 list_del(&entry->list);
631 kfree(entry);
632 continue;
633 }
634
635 for (i = 0; i < members_count; ++i)
636 if ((be32_to_cpu(mgm->qp[i]) &
637 MGM_QPN_MASK) == qpn) {
638 loc = i;
639 break;
640 }
641
642 if (loc < 0) {
643 mlx4_err(dev, "QP %06x wasn't found in entry %d\n",
644 qpn, entry->index);
645 err = -EINVAL;
646 goto out_mailbox;
647 }
648
649 /* Copy the last QP in this MGM
650 * over removed QP
651 */
652 mgm->qp[loc] = mgm->qp[members_count - 1];
653 mgm->qp[members_count - 1] = 0;
654 mgm->members_count =
655 cpu_to_be32(--members_count |
656 (MLX4_PROT_ETH << 30));
657
658 err = mlx4_WRITE_ENTRY(dev,
659 entry->index,
660 mailbox);
661 if (err)
662 goto out_mailbox;
663 }
664 }
665 }
666
667 out_mailbox:
668 mlx4_free_cmd_mailbox(dev, mailbox);
669 out_list:
670 if (back_to_list)
671 list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
672 else
673 kfree(pqp);
674 out_mutex:
675 mutex_unlock(&priv->mcg_table.mutex);
676 return err;
677 }
678
679 /*
680 * Caller must hold MCG table semaphore. gid and mgm parameters must
681 * be properly aligned for command interface.
682 *
683 * Returns 0 unless a firmware command error occurs.
684 *
685 * If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
686 * and *mgm holds MGM entry.
687 *
688 * if GID is found in AMGM, *index = index in AMGM, *prev = index of
689 * previous entry in hash chain and *mgm holds AMGM entry.
690 *
691 * If no AMGM exists for given gid, *index = -1, *prev = index of last
692 * entry in hash chain and *mgm holds end of hash chain.
693 */
694 static int find_entry(struct mlx4_dev *dev, u8 port,
695 u8 *gid, enum mlx4_protocol prot,
696 struct mlx4_cmd_mailbox *mgm_mailbox,
697 int *prev, int *index)
698 {
699 struct mlx4_cmd_mailbox *mailbox;
700 struct mlx4_mgm *mgm = mgm_mailbox->buf;
701 u8 *mgid;
702 int err;
703 u16 hash;
704 u8 op_mod = (prot == MLX4_PROT_ETH) ?
705 !!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) : 0;
706
707 mailbox = mlx4_alloc_cmd_mailbox(dev);
708 if (IS_ERR(mailbox))
709 return -ENOMEM;
710 mgid = mailbox->buf;
711
712 memcpy(mgid, gid, 16);
713
714 err = mlx4_GID_HASH(dev, mailbox, &hash, op_mod);
715 mlx4_free_cmd_mailbox(dev, mailbox);
716 if (err)
717 return err;
718
719 if (0)
720 mlx4_dbg(dev, "Hash for %pI6 is %04x\n", gid, hash);
721
722 *index = hash;
723 *prev = -1;
724
725 do {
726 err = mlx4_READ_ENTRY(dev, *index, mgm_mailbox);
727 if (err)
728 return err;
729
730 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
731 if (*index != hash) {
732 mlx4_err(dev, "Found zero MGID in AMGM\n");
733 err = -EINVAL;
734 }
735 return err;
736 }
737
738 if (!memcmp(mgm->gid, gid, 16) &&
739 be32_to_cpu(mgm->members_count) >> 30 == prot)
740 return err;
741
742 *prev = *index;
743 *index = be32_to_cpu(mgm->next_gid_index) >> 6;
744 } while (*index);
745
746 *index = -1;
747 return err;
748 }
749
750 static const u8 __promisc_mode[] = {
751 [MLX4_FS_REGULAR] = 0x0,
752 [MLX4_FS_ALL_DEFAULT] = 0x1,
753 [MLX4_FS_MC_DEFAULT] = 0x3,
754 [MLX4_FS_MIRROR_RX_PORT] = 0x4,
755 [MLX4_FS_MIRROR_SX_PORT] = 0x5,
756 [MLX4_FS_UC_SNIFFER] = 0x6,
757 [MLX4_FS_MC_SNIFFER] = 0x7,
758 };
759
760 int mlx4_map_sw_to_hw_steering_mode(struct mlx4_dev *dev,
761 enum mlx4_net_trans_promisc_mode flow_type)
762 {
763 if (flow_type >= MLX4_FS_MODE_NUM) {
764 mlx4_err(dev, "Invalid flow type. type = %d\n", flow_type);
765 return -EINVAL;
766 }
767 return __promisc_mode[flow_type];
768 }
769 EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_mode);
770
771 static void trans_rule_ctrl_to_hw(struct mlx4_net_trans_rule *ctrl,
772 struct mlx4_net_trans_rule_hw_ctrl *hw)
773 {
774 u8 flags = 0;
775
776 flags = ctrl->queue_mode == MLX4_NET_TRANS_Q_LIFO ? 1 : 0;
777 flags |= ctrl->exclusive ? (1 << 2) : 0;
778 flags |= ctrl->allow_loopback ? (1 << 3) : 0;
779
780 hw->flags = flags;
781 hw->type = __promisc_mode[ctrl->promisc_mode];
782 hw->prio = cpu_to_be16(ctrl->priority);
783 hw->port = ctrl->port;
784 hw->qpn = cpu_to_be32(ctrl->qpn);
785 }
786
787 const u16 __sw_id_hw[] = {
788 [MLX4_NET_TRANS_RULE_ID_ETH] = 0xE001,
789 [MLX4_NET_TRANS_RULE_ID_IB] = 0xE005,
790 [MLX4_NET_TRANS_RULE_ID_IPV6] = 0xE003,
791 [MLX4_NET_TRANS_RULE_ID_IPV4] = 0xE002,
792 [MLX4_NET_TRANS_RULE_ID_TCP] = 0xE004,
793 [MLX4_NET_TRANS_RULE_ID_UDP] = 0xE006,
794 [MLX4_NET_TRANS_RULE_ID_VXLAN] = 0xE008
795 };
796
797 int mlx4_map_sw_to_hw_steering_id(struct mlx4_dev *dev,
798 enum mlx4_net_trans_rule_id id)
799 {
800 if (id >= MLX4_NET_TRANS_RULE_NUM) {
801 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
802 return -EINVAL;
803 }
804 return __sw_id_hw[id];
805 }
806 EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_id);
807
808 static const int __rule_hw_sz[] = {
809 [MLX4_NET_TRANS_RULE_ID_ETH] =
810 sizeof(struct mlx4_net_trans_rule_hw_eth),
811 [MLX4_NET_TRANS_RULE_ID_IB] =
812 sizeof(struct mlx4_net_trans_rule_hw_ib),
813 [MLX4_NET_TRANS_RULE_ID_IPV6] = 0,
814 [MLX4_NET_TRANS_RULE_ID_IPV4] =
815 sizeof(struct mlx4_net_trans_rule_hw_ipv4),
816 [MLX4_NET_TRANS_RULE_ID_TCP] =
817 sizeof(struct mlx4_net_trans_rule_hw_tcp_udp),
818 [MLX4_NET_TRANS_RULE_ID_UDP] =
819 sizeof(struct mlx4_net_trans_rule_hw_tcp_udp),
820 [MLX4_NET_TRANS_RULE_ID_VXLAN] =
821 sizeof(struct mlx4_net_trans_rule_hw_vxlan)
822 };
823
824 int mlx4_hw_rule_sz(struct mlx4_dev *dev,
825 enum mlx4_net_trans_rule_id id)
826 {
827 if (id >= MLX4_NET_TRANS_RULE_NUM) {
828 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
829 return -EINVAL;
830 }
831
832 return __rule_hw_sz[id];
833 }
834 EXPORT_SYMBOL_GPL(mlx4_hw_rule_sz);
835
836 static int parse_trans_rule(struct mlx4_dev *dev, struct mlx4_spec_list *spec,
837 struct _rule_hw *rule_hw)
838 {
839 if (mlx4_hw_rule_sz(dev, spec->id) < 0)
840 return -EINVAL;
841 memset(rule_hw, 0, mlx4_hw_rule_sz(dev, spec->id));
842 rule_hw->id = cpu_to_be16(__sw_id_hw[spec->id]);
843 rule_hw->size = mlx4_hw_rule_sz(dev, spec->id) >> 2;
844
845 switch (spec->id) {
846 case MLX4_NET_TRANS_RULE_ID_ETH:
847 memcpy(rule_hw->eth.dst_mac, spec->eth.dst_mac, ETH_ALEN);
848 memcpy(rule_hw->eth.dst_mac_msk, spec->eth.dst_mac_msk,
849 ETH_ALEN);
850 memcpy(rule_hw->eth.src_mac, spec->eth.src_mac, ETH_ALEN);
851 memcpy(rule_hw->eth.src_mac_msk, spec->eth.src_mac_msk,
852 ETH_ALEN);
853 if (spec->eth.ether_type_enable) {
854 rule_hw->eth.ether_type_enable = 1;
855 rule_hw->eth.ether_type = spec->eth.ether_type;
856 }
857 rule_hw->eth.vlan_tag = spec->eth.vlan_id;
858 rule_hw->eth.vlan_tag_msk = spec->eth.vlan_id_msk;
859 break;
860
861 case MLX4_NET_TRANS_RULE_ID_IB:
862 rule_hw->ib.l3_qpn = spec->ib.l3_qpn;
863 rule_hw->ib.qpn_mask = spec->ib.qpn_msk;
864 memcpy(&rule_hw->ib.dst_gid, &spec->ib.dst_gid, 16);
865 memcpy(&rule_hw->ib.dst_gid_msk, &spec->ib.dst_gid_msk, 16);
866 break;
867
868 case MLX4_NET_TRANS_RULE_ID_IPV6:
869 return -EOPNOTSUPP;
870
871 case MLX4_NET_TRANS_RULE_ID_IPV4:
872 rule_hw->ipv4.src_ip = spec->ipv4.src_ip;
873 rule_hw->ipv4.src_ip_msk = spec->ipv4.src_ip_msk;
874 rule_hw->ipv4.dst_ip = spec->ipv4.dst_ip;
875 rule_hw->ipv4.dst_ip_msk = spec->ipv4.dst_ip_msk;
876 break;
877
878 case MLX4_NET_TRANS_RULE_ID_TCP:
879 case MLX4_NET_TRANS_RULE_ID_UDP:
880 rule_hw->tcp_udp.dst_port = spec->tcp_udp.dst_port;
881 rule_hw->tcp_udp.dst_port_msk = spec->tcp_udp.dst_port_msk;
882 rule_hw->tcp_udp.src_port = spec->tcp_udp.src_port;
883 rule_hw->tcp_udp.src_port_msk = spec->tcp_udp.src_port_msk;
884 break;
885
886 case MLX4_NET_TRANS_RULE_ID_VXLAN:
887 rule_hw->vxlan.vni =
888 cpu_to_be32(be32_to_cpu(spec->vxlan.vni) << 8);
889 rule_hw->vxlan.vni_mask =
890 cpu_to_be32(be32_to_cpu(spec->vxlan.vni_mask) << 8);
891 break;
892
893 default:
894 return -EINVAL;
895 }
896
897 return __rule_hw_sz[spec->id];
898 }
899
900 static void mlx4_err_rule(struct mlx4_dev *dev, char *str,
901 struct mlx4_net_trans_rule *rule)
902 {
903 #define BUF_SIZE 256
904 struct mlx4_spec_list *cur;
905 char buf[BUF_SIZE];
906 int len = 0;
907
908 mlx4_err(dev, "%s", str);
909 len += scnprintf(buf + len, BUF_SIZE - len,
910 "port = %d prio = 0x%x qp = 0x%x ",
911 rule->port, rule->priority, rule->qpn);
912
913 list_for_each_entry(cur, &rule->list, list) {
914 switch (cur->id) {
915 case MLX4_NET_TRANS_RULE_ID_ETH:
916 len += scnprintf(buf + len, BUF_SIZE - len,
917 "dmac = %pM ", &cur->eth.dst_mac);
918 if (cur->eth.ether_type)
919 len += scnprintf(buf + len, BUF_SIZE - len,
920 "ethertype = 0x%x ",
921 be16_to_cpu(cur->eth.ether_type));
922 if (cur->eth.vlan_id)
923 len += scnprintf(buf + len, BUF_SIZE - len,
924 "vlan-id = %d ",
925 be16_to_cpu(cur->eth.vlan_id));
926 break;
927
928 case MLX4_NET_TRANS_RULE_ID_IPV4:
929 if (cur->ipv4.src_ip)
930 len += scnprintf(buf + len, BUF_SIZE - len,
931 "src-ip = %pI4 ",
932 &cur->ipv4.src_ip);
933 if (cur->ipv4.dst_ip)
934 len += scnprintf(buf + len, BUF_SIZE - len,
935 "dst-ip = %pI4 ",
936 &cur->ipv4.dst_ip);
937 break;
938
939 case MLX4_NET_TRANS_RULE_ID_TCP:
940 case MLX4_NET_TRANS_RULE_ID_UDP:
941 if (cur->tcp_udp.src_port)
942 len += scnprintf(buf + len, BUF_SIZE - len,
943 "src-port = %d ",
944 be16_to_cpu(cur->tcp_udp.src_port));
945 if (cur->tcp_udp.dst_port)
946 len += scnprintf(buf + len, BUF_SIZE - len,
947 "dst-port = %d ",
948 be16_to_cpu(cur->tcp_udp.dst_port));
949 break;
950
951 case MLX4_NET_TRANS_RULE_ID_IB:
952 len += scnprintf(buf + len, BUF_SIZE - len,
953 "dst-gid = %pI6\n", cur->ib.dst_gid);
954 len += scnprintf(buf + len, BUF_SIZE - len,
955 "dst-gid-mask = %pI6\n",
956 cur->ib.dst_gid_msk);
957 break;
958
959 case MLX4_NET_TRANS_RULE_ID_VXLAN:
960 len += scnprintf(buf + len, BUF_SIZE - len,
961 "VNID = %d ", be32_to_cpu(cur->vxlan.vni));
962 break;
963 case MLX4_NET_TRANS_RULE_ID_IPV6:
964 break;
965
966 default:
967 break;
968 }
969 }
970 len += scnprintf(buf + len, BUF_SIZE - len, "\n");
971 mlx4_err(dev, "%s", buf);
972
973 if (len >= BUF_SIZE)
974 mlx4_err(dev, "Network rule error message was truncated, print buffer is too small\n");
975 }
976
977 int mlx4_flow_attach(struct mlx4_dev *dev,
978 struct mlx4_net_trans_rule *rule, u64 *reg_id)
979 {
980 struct mlx4_cmd_mailbox *mailbox;
981 struct mlx4_spec_list *cur;
982 u32 size = 0;
983 int ret;
984
985 mailbox = mlx4_alloc_cmd_mailbox(dev);
986 if (IS_ERR(mailbox))
987 return PTR_ERR(mailbox);
988
989 if (!mlx4_qp_lookup(dev, rule->qpn)) {
990 mlx4_err_rule(dev, "QP doesn't exist\n", rule);
991 ret = -EINVAL;
992 goto out;
993 }
994
995 trans_rule_ctrl_to_hw(rule, mailbox->buf);
996
997 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
998
999 list_for_each_entry(cur, &rule->list, list) {
1000 ret = parse_trans_rule(dev, cur, mailbox->buf + size);
1001 if (ret < 0)
1002 goto out;
1003
1004 size += ret;
1005 }
1006
1007 ret = mlx4_QP_FLOW_STEERING_ATTACH(dev, mailbox, size >> 2, reg_id);
1008 if (ret == -ENOMEM) {
1009 mlx4_err_rule(dev,
1010 "mcg table is full. Fail to register network rule\n",
1011 rule);
1012 } else if (ret) {
1013 if (ret == -ENXIO) {
1014 if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED)
1015 mlx4_err_rule(dev,
1016 "DMFS is not enabled, "
1017 "failed to register network rule.\n",
1018 rule);
1019 else
1020 mlx4_err_rule(dev,
1021 "Rule exceeds the dmfs_high_rate_mode limitations, "
1022 "failed to register network rule.\n",
1023 rule);
1024
1025 } else {
1026 mlx4_err_rule(dev, "Fail to register network rule.\n", rule);
1027 }
1028 }
1029
1030 out:
1031 mlx4_free_cmd_mailbox(dev, mailbox);
1032
1033 return ret;
1034 }
1035 EXPORT_SYMBOL_GPL(mlx4_flow_attach);
1036
1037 int mlx4_flow_detach(struct mlx4_dev *dev, u64 reg_id)
1038 {
1039 int err;
1040
1041 err = mlx4_QP_FLOW_STEERING_DETACH(dev, reg_id);
1042 if (err)
1043 mlx4_err(dev, "Fail to detach network rule. registration id = 0x%llx\n",
1044 reg_id);
1045 return err;
1046 }
1047 EXPORT_SYMBOL_GPL(mlx4_flow_detach);
1048
1049 int mlx4_tunnel_steer_add(struct mlx4_dev *dev, unsigned char *addr,
1050 int port, int qpn, u16 prio, u64 *reg_id)
1051 {
1052 int err;
1053 struct mlx4_spec_list spec_eth_outer = { {NULL} };
1054 struct mlx4_spec_list spec_vxlan = { {NULL} };
1055 struct mlx4_spec_list spec_eth_inner = { {NULL} };
1056
1057 struct mlx4_net_trans_rule rule = {
1058 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
1059 .exclusive = 0,
1060 .allow_loopback = 1,
1061 .promisc_mode = MLX4_FS_REGULAR,
1062 };
1063
1064 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
1065
1066 rule.port = port;
1067 rule.qpn = qpn;
1068 rule.priority = prio;
1069 INIT_LIST_HEAD(&rule.list);
1070
1071 spec_eth_outer.id = MLX4_NET_TRANS_RULE_ID_ETH;
1072 memcpy(spec_eth_outer.eth.dst_mac, addr, ETH_ALEN);
1073 memcpy(spec_eth_outer.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
1074
1075 spec_vxlan.id = MLX4_NET_TRANS_RULE_ID_VXLAN; /* any vxlan header */
1076 spec_eth_inner.id = MLX4_NET_TRANS_RULE_ID_ETH; /* any inner eth header */
1077
1078 list_add_tail(&spec_eth_outer.list, &rule.list);
1079 list_add_tail(&spec_vxlan.list, &rule.list);
1080 list_add_tail(&spec_eth_inner.list, &rule.list);
1081
1082 err = mlx4_flow_attach(dev, &rule, reg_id);
1083 return err;
1084 }
1085 EXPORT_SYMBOL(mlx4_tunnel_steer_add);
1086
1087 int mlx4_FLOW_STEERING_IB_UC_QP_RANGE(struct mlx4_dev *dev, u32 min_range_qpn,
1088 u32 max_range_qpn)
1089 {
1090 int err;
1091 u64 in_param;
1092
1093 in_param = ((u64) min_range_qpn) << 32;
1094 in_param |= ((u64) max_range_qpn) & 0xFFFFFFFF;
1095
1096 err = mlx4_cmd(dev, in_param, 0, 0,
1097 MLX4_FLOW_STEERING_IB_UC_QP_RANGE,
1098 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1099
1100 return err;
1101 }
1102 EXPORT_SYMBOL_GPL(mlx4_FLOW_STEERING_IB_UC_QP_RANGE);
1103
1104 int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1105 int block_mcast_loopback, enum mlx4_protocol prot,
1106 enum mlx4_steer_type steer)
1107 {
1108 struct mlx4_priv *priv = mlx4_priv(dev);
1109 struct mlx4_cmd_mailbox *mailbox;
1110 struct mlx4_mgm *mgm;
1111 u32 members_count;
1112 int index = -1, prev;
1113 int link = 0;
1114 int i;
1115 int err;
1116 u8 port = gid[5];
1117 u8 new_entry = 0;
1118
1119 mailbox = mlx4_alloc_cmd_mailbox(dev);
1120 if (IS_ERR(mailbox))
1121 return PTR_ERR(mailbox);
1122 mgm = mailbox->buf;
1123
1124 mutex_lock(&priv->mcg_table.mutex);
1125 err = find_entry(dev, port, gid, prot,
1126 mailbox, &prev, &index);
1127 if (err)
1128 goto out;
1129
1130 if (index != -1) {
1131 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
1132 new_entry = 1;
1133 memcpy(mgm->gid, gid, 16);
1134 }
1135 } else {
1136 link = 1;
1137
1138 index = mlx4_bitmap_alloc(&priv->mcg_table.bitmap);
1139 if (index == -1) {
1140 mlx4_err(dev, "No AMGM entries left\n");
1141 err = -ENOMEM;
1142 goto out;
1143 }
1144 index += dev->caps.num_mgms;
1145
1146 new_entry = 1;
1147 memset(mgm, 0, sizeof(*mgm));
1148 memcpy(mgm->gid, gid, 16);
1149 }
1150
1151 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
1152 if (members_count == dev->caps.num_qp_per_mgm) {
1153 mlx4_err(dev, "MGM at index %x is full\n", index);
1154 err = -ENOMEM;
1155 goto out;
1156 }
1157
1158 for (i = 0; i < members_count; ++i)
1159 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
1160 mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn);
1161 err = 0;
1162 goto out;
1163 }
1164
1165 if (block_mcast_loopback)
1166 mgm->qp[members_count++] = cpu_to_be32((qp->qpn & MGM_QPN_MASK) |
1167 (1U << MGM_BLCK_LB_BIT));
1168 else
1169 mgm->qp[members_count++] = cpu_to_be32(qp->qpn & MGM_QPN_MASK);
1170
1171 mgm->members_count = cpu_to_be32(members_count | (u32) prot << 30);
1172
1173 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1174 if (err)
1175 goto out;
1176
1177 if (!link)
1178 goto out;
1179
1180 err = mlx4_READ_ENTRY(dev, prev, mailbox);
1181 if (err)
1182 goto out;
1183
1184 mgm->next_gid_index = cpu_to_be32(index << 6);
1185
1186 err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
1187 if (err)
1188 goto out;
1189
1190 out:
1191 if (prot == MLX4_PROT_ETH && index != -1) {
1192 /* manage the steering entry for promisc mode */
1193 if (new_entry)
1194 err = new_steering_entry(dev, port, steer,
1195 index, qp->qpn);
1196 else
1197 err = existing_steering_entry(dev, port, steer,
1198 index, qp->qpn);
1199 }
1200 if (err && link && index != -1) {
1201 if (index < dev->caps.num_mgms)
1202 mlx4_warn(dev, "Got AMGM index %d < %d\n",
1203 index, dev->caps.num_mgms);
1204 else
1205 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1206 index - dev->caps.num_mgms, MLX4_USE_RR);
1207 }
1208 mutex_unlock(&priv->mcg_table.mutex);
1209
1210 mlx4_free_cmd_mailbox(dev, mailbox);
1211 return err;
1212 }
1213
1214 int mlx4_qp_detach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1215 enum mlx4_protocol prot, enum mlx4_steer_type steer)
1216 {
1217 struct mlx4_priv *priv = mlx4_priv(dev);
1218 struct mlx4_cmd_mailbox *mailbox;
1219 struct mlx4_mgm *mgm;
1220 u32 members_count;
1221 int prev, index;
1222 int i, loc = -1;
1223 int err;
1224 u8 port = gid[5];
1225 bool removed_entry = false;
1226
1227 mailbox = mlx4_alloc_cmd_mailbox(dev);
1228 if (IS_ERR(mailbox))
1229 return PTR_ERR(mailbox);
1230 mgm = mailbox->buf;
1231
1232 mutex_lock(&priv->mcg_table.mutex);
1233
1234 err = find_entry(dev, port, gid, prot,
1235 mailbox, &prev, &index);
1236 if (err)
1237 goto out;
1238
1239 if (index == -1) {
1240 mlx4_err(dev, "MGID %pI6 not found\n", gid);
1241 err = -EINVAL;
1242 goto out;
1243 }
1244
1245 /* If this QP is also a promisc QP, it shouldn't be removed only if
1246 * at least one none promisc QP is also attached to this MCG
1247 */
1248 if (prot == MLX4_PROT_ETH &&
1249 check_duplicate_entry(dev, port, steer, index, qp->qpn) &&
1250 !promisc_steering_entry(dev, port, steer, index, qp->qpn, NULL))
1251 goto out;
1252
1253 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
1254 for (i = 0; i < members_count; ++i)
1255 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
1256 loc = i;
1257 break;
1258 }
1259
1260 if (loc == -1) {
1261 mlx4_err(dev, "QP %06x not found in MGM\n", qp->qpn);
1262 err = -EINVAL;
1263 goto out;
1264 }
1265
1266 /* copy the last QP in this MGM over removed QP */
1267 mgm->qp[loc] = mgm->qp[members_count - 1];
1268 mgm->qp[members_count - 1] = 0;
1269 mgm->members_count = cpu_to_be32(--members_count | (u32) prot << 30);
1270
1271 if (prot == MLX4_PROT_ETH)
1272 removed_entry = can_remove_steering_entry(dev, port, steer,
1273 index, qp->qpn);
1274 if (members_count && (prot != MLX4_PROT_ETH || !removed_entry)) {
1275 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1276 goto out;
1277 }
1278
1279 /* We are going to delete the entry, members count should be 0 */
1280 mgm->members_count = cpu_to_be32((u32) prot << 30);
1281
1282 if (prev == -1) {
1283 /* Remove entry from MGM */
1284 int amgm_index = be32_to_cpu(mgm->next_gid_index) >> 6;
1285 if (amgm_index) {
1286 err = mlx4_READ_ENTRY(dev, amgm_index, mailbox);
1287 if (err)
1288 goto out;
1289 } else
1290 memset(mgm->gid, 0, 16);
1291
1292 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1293 if (err)
1294 goto out;
1295
1296 if (amgm_index) {
1297 if (amgm_index < dev->caps.num_mgms)
1298 mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d\n",
1299 index, amgm_index, dev->caps.num_mgms);
1300 else
1301 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1302 amgm_index - dev->caps.num_mgms, MLX4_USE_RR);
1303 }
1304 } else {
1305 /* Remove entry from AMGM */
1306 int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
1307 err = mlx4_READ_ENTRY(dev, prev, mailbox);
1308 if (err)
1309 goto out;
1310
1311 mgm->next_gid_index = cpu_to_be32(cur_next_index << 6);
1312
1313 err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
1314 if (err)
1315 goto out;
1316
1317 if (index < dev->caps.num_mgms)
1318 mlx4_warn(dev, "entry %d had next AMGM index %d < %d\n",
1319 prev, index, dev->caps.num_mgms);
1320 else
1321 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1322 index - dev->caps.num_mgms, MLX4_USE_RR);
1323 }
1324
1325 out:
1326 mutex_unlock(&priv->mcg_table.mutex);
1327
1328 mlx4_free_cmd_mailbox(dev, mailbox);
1329 if (err && dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
1330 /* In case device is under an error, return success as a closing command */
1331 err = 0;
1332 return err;
1333 }
1334
1335 static int mlx4_QP_ATTACH(struct mlx4_dev *dev, struct mlx4_qp *qp,
1336 u8 gid[16], u8 attach, u8 block_loopback,
1337 enum mlx4_protocol prot)
1338 {
1339 struct mlx4_cmd_mailbox *mailbox;
1340 int err = 0;
1341 int qpn;
1342
1343 if (!mlx4_is_mfunc(dev))
1344 return -EBADF;
1345
1346 mailbox = mlx4_alloc_cmd_mailbox(dev);
1347 if (IS_ERR(mailbox))
1348 return PTR_ERR(mailbox);
1349
1350 memcpy(mailbox->buf, gid, 16);
1351 qpn = qp->qpn;
1352 qpn |= (prot << 28);
1353 if (attach && block_loopback)
1354 qpn |= (1 << 31);
1355
1356 err = mlx4_cmd(dev, mailbox->dma, qpn, attach,
1357 MLX4_CMD_QP_ATTACH, MLX4_CMD_TIME_CLASS_A,
1358 MLX4_CMD_WRAPPED);
1359
1360 mlx4_free_cmd_mailbox(dev, mailbox);
1361 if (err && !attach &&
1362 dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
1363 err = 0;
1364 return err;
1365 }
1366
1367 int mlx4_trans_to_dmfs_attach(struct mlx4_dev *dev, struct mlx4_qp *qp,
1368 u8 gid[16], u8 port,
1369 int block_mcast_loopback,
1370 enum mlx4_protocol prot, u64 *reg_id)
1371 {
1372 struct mlx4_spec_list spec = { {NULL} };
1373 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
1374
1375 struct mlx4_net_trans_rule rule = {
1376 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
1377 .exclusive = 0,
1378 .promisc_mode = MLX4_FS_REGULAR,
1379 .priority = MLX4_DOMAIN_NIC,
1380 };
1381
1382 rule.allow_loopback = !block_mcast_loopback;
1383 rule.port = port;
1384 rule.qpn = qp->qpn;
1385 INIT_LIST_HEAD(&rule.list);
1386
1387 switch (prot) {
1388 case MLX4_PROT_ETH:
1389 spec.id = MLX4_NET_TRANS_RULE_ID_ETH;
1390 memcpy(spec.eth.dst_mac, &gid[10], ETH_ALEN);
1391 memcpy(spec.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
1392 break;
1393
1394 case MLX4_PROT_IB_IPV6:
1395 spec.id = MLX4_NET_TRANS_RULE_ID_IB;
1396 memcpy(spec.ib.dst_gid, gid, 16);
1397 memset(&spec.ib.dst_gid_msk, 0xff, 16);
1398 break;
1399 default:
1400 return -EINVAL;
1401 }
1402 list_add_tail(&spec.list, &rule.list);
1403
1404 return mlx4_flow_attach(dev, &rule, reg_id);
1405 }
1406
1407 int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1408 u8 port, int block_mcast_loopback,
1409 enum mlx4_protocol prot, u64 *reg_id)
1410 {
1411 switch (dev->caps.steering_mode) {
1412 case MLX4_STEERING_MODE_A0:
1413 if (prot == MLX4_PROT_ETH)
1414 return 0;
1415 fallthrough;
1416
1417 case MLX4_STEERING_MODE_B0:
1418 if (prot == MLX4_PROT_ETH)
1419 gid[7] |= (MLX4_MC_STEER << 1);
1420
1421 if (mlx4_is_mfunc(dev))
1422 return mlx4_QP_ATTACH(dev, qp, gid, 1,
1423 block_mcast_loopback, prot);
1424 return mlx4_qp_attach_common(dev, qp, gid,
1425 block_mcast_loopback, prot,
1426 MLX4_MC_STEER);
1427
1428 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1429 return mlx4_trans_to_dmfs_attach(dev, qp, gid, port,
1430 block_mcast_loopback,
1431 prot, reg_id);
1432 default:
1433 return -EINVAL;
1434 }
1435 }
1436 EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
1437
1438 int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1439 enum mlx4_protocol prot, u64 reg_id)
1440 {
1441 switch (dev->caps.steering_mode) {
1442 case MLX4_STEERING_MODE_A0:
1443 if (prot == MLX4_PROT_ETH)
1444 return 0;
1445 fallthrough;
1446
1447 case MLX4_STEERING_MODE_B0:
1448 if (prot == MLX4_PROT_ETH)
1449 gid[7] |= (MLX4_MC_STEER << 1);
1450
1451 if (mlx4_is_mfunc(dev))
1452 return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
1453
1454 return mlx4_qp_detach_common(dev, qp, gid, prot,
1455 MLX4_MC_STEER);
1456
1457 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1458 return mlx4_flow_detach(dev, reg_id);
1459
1460 default:
1461 return -EINVAL;
1462 }
1463 }
1464 EXPORT_SYMBOL_GPL(mlx4_multicast_detach);
1465
1466 int mlx4_flow_steer_promisc_add(struct mlx4_dev *dev, u8 port,
1467 u32 qpn, enum mlx4_net_trans_promisc_mode mode)
1468 {
1469 struct mlx4_net_trans_rule rule = {
1470 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
1471 .exclusive = 0,
1472 .allow_loopback = 1,
1473 };
1474
1475 u64 *regid_p;
1476
1477 switch (mode) {
1478 case MLX4_FS_ALL_DEFAULT:
1479 regid_p = &dev->regid_promisc_array[port];
1480 break;
1481 case MLX4_FS_MC_DEFAULT:
1482 regid_p = &dev->regid_allmulti_array[port];
1483 break;
1484 default:
1485 return -1;
1486 }
1487
1488 if (*regid_p != 0)
1489 return -1;
1490
1491 rule.promisc_mode = mode;
1492 rule.port = port;
1493 rule.qpn = qpn;
1494 INIT_LIST_HEAD(&rule.list);
1495 mlx4_info(dev, "going promisc on %x\n", port);
1496
1497 return mlx4_flow_attach(dev, &rule, regid_p);
1498 }
1499 EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_add);
1500
1501 int mlx4_flow_steer_promisc_remove(struct mlx4_dev *dev, u8 port,
1502 enum mlx4_net_trans_promisc_mode mode)
1503 {
1504 int ret;
1505 u64 *regid_p;
1506
1507 switch (mode) {
1508 case MLX4_FS_ALL_DEFAULT:
1509 regid_p = &dev->regid_promisc_array[port];
1510 break;
1511 case MLX4_FS_MC_DEFAULT:
1512 regid_p = &dev->regid_allmulti_array[port];
1513 break;
1514 default:
1515 return -1;
1516 }
1517
1518 if (*regid_p == 0)
1519 return -1;
1520
1521 ret = mlx4_flow_detach(dev, *regid_p);
1522 if (ret == 0)
1523 *regid_p = 0;
1524
1525 return ret;
1526 }
1527 EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_remove);
1528
1529 int mlx4_unicast_attach(struct mlx4_dev *dev,
1530 struct mlx4_qp *qp, u8 gid[16],
1531 int block_mcast_loopback, enum mlx4_protocol prot)
1532 {
1533 if (prot == MLX4_PROT_ETH)
1534 gid[7] |= (MLX4_UC_STEER << 1);
1535
1536 if (mlx4_is_mfunc(dev))
1537 return mlx4_QP_ATTACH(dev, qp, gid, 1,
1538 block_mcast_loopback, prot);
1539
1540 return mlx4_qp_attach_common(dev, qp, gid, block_mcast_loopback,
1541 prot, MLX4_UC_STEER);
1542 }
1543 EXPORT_SYMBOL_GPL(mlx4_unicast_attach);
1544
1545 int mlx4_unicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp,
1546 u8 gid[16], enum mlx4_protocol prot)
1547 {
1548 if (prot == MLX4_PROT_ETH)
1549 gid[7] |= (MLX4_UC_STEER << 1);
1550
1551 if (mlx4_is_mfunc(dev))
1552 return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
1553
1554 return mlx4_qp_detach_common(dev, qp, gid, prot, MLX4_UC_STEER);
1555 }
1556 EXPORT_SYMBOL_GPL(mlx4_unicast_detach);
1557
1558 int mlx4_PROMISC_wrapper(struct mlx4_dev *dev, int slave,
1559 struct mlx4_vhcr *vhcr,
1560 struct mlx4_cmd_mailbox *inbox,
1561 struct mlx4_cmd_mailbox *outbox,
1562 struct mlx4_cmd_info *cmd)
1563 {
1564 u32 qpn = (u32) vhcr->in_param & 0xffffffff;
1565 int port = mlx4_slave_convert_port(dev, slave, vhcr->in_param >> 62);
1566 enum mlx4_steer_type steer = vhcr->in_modifier;
1567
1568 if (port < 0)
1569 return -EINVAL;
1570
1571 /* Promiscuous unicast is not allowed in mfunc */
1572 if (mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)
1573 return 0;
1574
1575 if (vhcr->op_modifier)
1576 return add_promisc_qp(dev, port, steer, qpn);
1577 else
1578 return remove_promisc_qp(dev, port, steer, qpn);
1579 }
1580
1581 static int mlx4_PROMISC(struct mlx4_dev *dev, u32 qpn,
1582 enum mlx4_steer_type steer, u8 add, u8 port)
1583 {
1584 return mlx4_cmd(dev, (u64) qpn | (u64) port << 62, (u32) steer, add,
1585 MLX4_CMD_PROMISC, MLX4_CMD_TIME_CLASS_A,
1586 MLX4_CMD_WRAPPED);
1587 }
1588
1589 int mlx4_multicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1590 {
1591 if (mlx4_is_mfunc(dev))
1592 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 1, port);
1593
1594 return add_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
1595 }
1596 EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_add);
1597
1598 int mlx4_multicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1599 {
1600 if (mlx4_is_mfunc(dev))
1601 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 0, port);
1602
1603 return remove_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
1604 }
1605 EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_remove);
1606
1607 int mlx4_unicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1608 {
1609 if (mlx4_is_mfunc(dev))
1610 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 1, port);
1611
1612 return add_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
1613 }
1614 EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_add);
1615
1616 int mlx4_unicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1617 {
1618 if (mlx4_is_mfunc(dev))
1619 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 0, port);
1620
1621 return remove_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
1622 }
1623 EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_remove);
1624
1625 int mlx4_init_mcg_table(struct mlx4_dev *dev)
1626 {
1627 struct mlx4_priv *priv = mlx4_priv(dev);
1628 int err;
1629
1630 /* No need for mcg_table when fw managed the mcg table*/
1631 if (dev->caps.steering_mode ==
1632 MLX4_STEERING_MODE_DEVICE_MANAGED)
1633 return 0;
1634 err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms,
1635 dev->caps.num_amgms - 1, 0, 0);
1636 if (err)
1637 return err;
1638
1639 mutex_init(&priv->mcg_table.mutex);
1640
1641 return 0;
1642 }
1643
1644 void mlx4_cleanup_mcg_table(struct mlx4_dev *dev)
1645 {
1646 if (dev->caps.steering_mode !=
1647 MLX4_STEERING_MODE_DEVICE_MANAGED)
1648 mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap);
1649 }
Linux with added FPC-III support