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[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / drivers / net / ethernet / mellanox / mlx4 / mcg.c
1 /*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34 #include <linux/string.h>
35 #include <linux/etherdevice.h>
36
37 #include <linux/mlx4/cmd.h>
38 #include <linux/export.h>
39
40 #include "mlx4.h"
41
42 int mlx4_get_mgm_entry_size(struct mlx4_dev *dev)
43 {
44 return 1 << dev->oper_log_mgm_entry_size;
45 }
46
47 int mlx4_get_qp_per_mgm(struct mlx4_dev *dev)
48 {
49 return 4 * (mlx4_get_mgm_entry_size(dev) / 16 - 2);
50 }
51
52 static int mlx4_QP_FLOW_STEERING_ATTACH(struct mlx4_dev *dev,
53 struct mlx4_cmd_mailbox *mailbox,
54 u32 size,
55 u64 *reg_id)
56 {
57 u64 imm;
58 int err = 0;
59
60 err = mlx4_cmd_imm(dev, mailbox->dma, &imm, size, 0,
61 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
62 MLX4_CMD_NATIVE);
63 if (err)
64 return err;
65 *reg_id = imm;
66
67 return err;
68 }
69
70 static int mlx4_QP_FLOW_STEERING_DETACH(struct mlx4_dev *dev, u64 regid)
71 {
72 int err = 0;
73
74 err = mlx4_cmd(dev, regid, 0, 0,
75 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
76 MLX4_CMD_NATIVE);
77
78 return err;
79 }
80
81 static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index,
82 struct mlx4_cmd_mailbox *mailbox)
83 {
84 return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG,
85 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
86 }
87
88 static int mlx4_WRITE_ENTRY(struct mlx4_dev *dev, int index,
89 struct mlx4_cmd_mailbox *mailbox)
90 {
91 return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG,
92 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
93 }
94
95 static int mlx4_WRITE_PROMISC(struct mlx4_dev *dev, u8 port, u8 steer,
96 struct mlx4_cmd_mailbox *mailbox)
97 {
98 u32 in_mod;
99
100 in_mod = (u32) port << 16 | steer << 1;
101 return mlx4_cmd(dev, mailbox->dma, in_mod, 0x1,
102 MLX4_CMD_WRITE_MCG, MLX4_CMD_TIME_CLASS_A,
103 MLX4_CMD_NATIVE);
104 }
105
106 static int mlx4_GID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
107 u16 *hash, u8 op_mod)
108 {
109 u64 imm;
110 int err;
111
112 err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, op_mod,
113 MLX4_CMD_MGID_HASH, MLX4_CMD_TIME_CLASS_A,
114 MLX4_CMD_NATIVE);
115
116 if (!err)
117 *hash = imm;
118
119 return err;
120 }
121
122 static struct mlx4_promisc_qp *get_promisc_qp(struct mlx4_dev *dev, u8 port,
123 enum mlx4_steer_type steer,
124 u32 qpn)
125 {
126 struct mlx4_steer *s_steer;
127 struct mlx4_promisc_qp *pqp;
128
129 if (port < 1 || port > dev->caps.num_ports)
130 return NULL;
131
132 s_steer = &mlx4_priv(dev)->steer[port - 1];
133
134 list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
135 if (pqp->qpn == qpn)
136 return pqp;
137 }
138 /* not found */
139 return NULL;
140 }
141
142 /*
143 * Add new entry to steering data structure.
144 * All promisc QPs should be added as well
145 */
146 static int new_steering_entry(struct mlx4_dev *dev, u8 port,
147 enum mlx4_steer_type steer,
148 unsigned int index, u32 qpn)
149 {
150 struct mlx4_steer *s_steer;
151 struct mlx4_cmd_mailbox *mailbox;
152 struct mlx4_mgm *mgm;
153 u32 members_count;
154 struct mlx4_steer_index *new_entry;
155 struct mlx4_promisc_qp *pqp;
156 struct mlx4_promisc_qp *dqp = NULL;
157 u32 prot;
158 int err;
159
160 if (port < 1 || port > dev->caps.num_ports)
161 return -EINVAL;
162
163 s_steer = &mlx4_priv(dev)->steer[port - 1];
164 new_entry = kzalloc(sizeof *new_entry, GFP_KERNEL);
165 if (!new_entry)
166 return -ENOMEM;
167
168 INIT_LIST_HEAD(&new_entry->duplicates);
169 new_entry->index = index;
170 list_add_tail(&new_entry->list, &s_steer->steer_entries[steer]);
171
172 /* If the given qpn is also a promisc qp,
173 * it should be inserted to duplicates list
174 */
175 pqp = get_promisc_qp(dev, port, steer, qpn);
176 if (pqp) {
177 dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
178 if (!dqp) {
179 err = -ENOMEM;
180 goto out_alloc;
181 }
182 dqp->qpn = qpn;
183 list_add_tail(&dqp->list, &new_entry->duplicates);
184 }
185
186 /* if no promisc qps for this vep, we are done */
187 if (list_empty(&s_steer->promisc_qps[steer]))
188 return 0;
189
190 /* now need to add all the promisc qps to the new
191 * steering entry, as they should also receive the packets
192 * destined to this address */
193 mailbox = mlx4_alloc_cmd_mailbox(dev);
194 if (IS_ERR(mailbox)) {
195 err = -ENOMEM;
196 goto out_alloc;
197 }
198 mgm = mailbox->buf;
199
200 err = mlx4_READ_ENTRY(dev, index, mailbox);
201 if (err)
202 goto out_mailbox;
203
204 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
205 prot = be32_to_cpu(mgm->members_count) >> 30;
206 list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
207 /* don't add already existing qpn */
208 if (pqp->qpn == qpn)
209 continue;
210 if (members_count == dev->caps.num_qp_per_mgm) {
211 /* out of space */
212 err = -ENOMEM;
213 goto out_mailbox;
214 }
215
216 /* add the qpn */
217 mgm->qp[members_count++] = cpu_to_be32(pqp->qpn & MGM_QPN_MASK);
218 }
219 /* update the qps count and update the entry with all the promisc qps*/
220 mgm->members_count = cpu_to_be32(members_count | (prot << 30));
221 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
222
223 out_mailbox:
224 mlx4_free_cmd_mailbox(dev, mailbox);
225 if (!err)
226 return 0;
227 out_alloc:
228 if (dqp) {
229 list_del(&dqp->list);
230 kfree(dqp);
231 }
232 list_del(&new_entry->list);
233 kfree(new_entry);
234 return err;
235 }
236
237 /* update the data structures with existing steering entry */
238 static int existing_steering_entry(struct mlx4_dev *dev, u8 port,
239 enum mlx4_steer_type steer,
240 unsigned int index, u32 qpn)
241 {
242 struct mlx4_steer *s_steer;
243 struct mlx4_steer_index *tmp_entry, *entry = NULL;
244 struct mlx4_promisc_qp *pqp;
245 struct mlx4_promisc_qp *dqp;
246
247 if (port < 1 || port > dev->caps.num_ports)
248 return -EINVAL;
249
250 s_steer = &mlx4_priv(dev)->steer[port - 1];
251
252 pqp = get_promisc_qp(dev, port, steer, qpn);
253 if (!pqp)
254 return 0; /* nothing to do */
255
256 list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
257 if (tmp_entry->index == index) {
258 entry = tmp_entry;
259 break;
260 }
261 }
262 if (unlikely(!entry)) {
263 mlx4_warn(dev, "Steering entry at index %x is not registered\n", index);
264 return -EINVAL;
265 }
266
267 /* the given qpn is listed as a promisc qpn
268 * we need to add it as a duplicate to this entry
269 * for future references */
270 list_for_each_entry(dqp, &entry->duplicates, list) {
271 if (qpn == dqp->qpn)
272 return 0; /* qp is already duplicated */
273 }
274
275 /* add the qp as a duplicate on this index */
276 dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
277 if (!dqp)
278 return -ENOMEM;
279 dqp->qpn = qpn;
280 list_add_tail(&dqp->list, &entry->duplicates);
281
282 return 0;
283 }
284
285 /* Check whether a qpn is a duplicate on steering entry
286 * If so, it should not be removed from mgm */
287 static bool check_duplicate_entry(struct mlx4_dev *dev, u8 port,
288 enum mlx4_steer_type steer,
289 unsigned int index, u32 qpn)
290 {
291 struct mlx4_steer *s_steer;
292 struct mlx4_steer_index *tmp_entry, *entry = NULL;
293 struct mlx4_promisc_qp *dqp, *tmp_dqp;
294
295 if (port < 1 || port > dev->caps.num_ports)
296 return NULL;
297
298 s_steer = &mlx4_priv(dev)->steer[port - 1];
299
300 /* if qp is not promisc, it cannot be duplicated */
301 if (!get_promisc_qp(dev, port, steer, qpn))
302 return false;
303
304 /* The qp is promisc qp so it is a duplicate on this index
305 * Find the index entry, and remove the duplicate */
306 list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
307 if (tmp_entry->index == index) {
308 entry = tmp_entry;
309 break;
310 }
311 }
312 if (unlikely(!entry)) {
313 mlx4_warn(dev, "Steering entry for index %x is not registered\n", index);
314 return false;
315 }
316 list_for_each_entry_safe(dqp, tmp_dqp, &entry->duplicates, list) {
317 if (dqp->qpn == qpn) {
318 list_del(&dqp->list);
319 kfree(dqp);
320 }
321 }
322 return true;
323 }
324
325 /* Returns true if all the QPs != tqpn contained in this entry
326 * are Promisc QPs. Returns false otherwise.
327 */
328 static bool promisc_steering_entry(struct mlx4_dev *dev, u8 port,
329 enum mlx4_steer_type steer,
330 unsigned int index, u32 tqpn,
331 u32 *members_count)
332 {
333 struct mlx4_cmd_mailbox *mailbox;
334 struct mlx4_mgm *mgm;
335 u32 m_count;
336 bool ret = false;
337 int i;
338
339 if (port < 1 || port > dev->caps.num_ports)
340 return false;
341
342 mailbox = mlx4_alloc_cmd_mailbox(dev);
343 if (IS_ERR(mailbox))
344 return false;
345 mgm = mailbox->buf;
346
347 if (mlx4_READ_ENTRY(dev, index, mailbox))
348 goto out;
349 m_count = be32_to_cpu(mgm->members_count) & 0xffffff;
350 if (members_count)
351 *members_count = m_count;
352
353 for (i = 0; i < m_count; i++) {
354 u32 qpn = be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK;
355 if (!get_promisc_qp(dev, port, steer, qpn) && qpn != tqpn) {
356 /* the qp is not promisc, the entry can't be removed */
357 goto out;
358 }
359 }
360 ret = true;
361 out:
362 mlx4_free_cmd_mailbox(dev, mailbox);
363 return ret;
364 }
365
366 /* IF a steering entry contains only promisc QPs, it can be removed. */
367 static bool can_remove_steering_entry(struct mlx4_dev *dev, u8 port,
368 enum mlx4_steer_type steer,
369 unsigned int index, u32 tqpn)
370 {
371 struct mlx4_steer *s_steer;
372 struct mlx4_steer_index *entry = NULL, *tmp_entry;
373 u32 members_count;
374 bool ret = false;
375
376 if (port < 1 || port > dev->caps.num_ports)
377 return NULL;
378
379 s_steer = &mlx4_priv(dev)->steer[port - 1];
380
381 if (!promisc_steering_entry(dev, port, steer, index,
382 tqpn, &members_count))
383 goto out;
384
385 /* All the qps currently registered for this entry are promiscuous,
386 * Checking for duplicates */
387 ret = true;
388 list_for_each_entry_safe(entry, tmp_entry, &s_steer->steer_entries[steer], list) {
389 if (entry->index == index) {
390 if (list_empty(&entry->duplicates) ||
391 members_count == 1) {
392 struct mlx4_promisc_qp *pqp, *tmp_pqp;
393 /* If there is only 1 entry in duplicates then
394 * this is the QP we want to delete, going over
395 * the list and deleting the entry.
396 */
397 list_del(&entry->list);
398 list_for_each_entry_safe(pqp, tmp_pqp,
399 &entry->duplicates,
400 list) {
401 list_del(&pqp->list);
402 kfree(pqp);
403 }
404 kfree(entry);
405 } else {
406 /* This entry contains duplicates so it shouldn't be removed */
407 ret = false;
408 goto out;
409 }
410 }
411 }
412
413 out:
414 return ret;
415 }
416
417 static int add_promisc_qp(struct mlx4_dev *dev, u8 port,
418 enum mlx4_steer_type steer, u32 qpn)
419 {
420 struct mlx4_steer *s_steer;
421 struct mlx4_cmd_mailbox *mailbox;
422 struct mlx4_mgm *mgm;
423 struct mlx4_steer_index *entry;
424 struct mlx4_promisc_qp *pqp;
425 struct mlx4_promisc_qp *dqp;
426 u32 members_count;
427 u32 prot;
428 int i;
429 bool found;
430 int err;
431 struct mlx4_priv *priv = mlx4_priv(dev);
432
433 if (port < 1 || port > dev->caps.num_ports)
434 return -EINVAL;
435
436 s_steer = &mlx4_priv(dev)->steer[port - 1];
437
438 mutex_lock(&priv->mcg_table.mutex);
439
440 if (get_promisc_qp(dev, port, steer, qpn)) {
441 err = 0; /* Noting to do, already exists */
442 goto out_mutex;
443 }
444
445 pqp = kmalloc(sizeof *pqp, GFP_KERNEL);
446 if (!pqp) {
447 err = -ENOMEM;
448 goto out_mutex;
449 }
450 pqp->qpn = qpn;
451
452 mailbox = mlx4_alloc_cmd_mailbox(dev);
453 if (IS_ERR(mailbox)) {
454 err = -ENOMEM;
455 goto out_alloc;
456 }
457 mgm = mailbox->buf;
458
459 if (!(mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)) {
460 /* The promisc QP needs to be added for each one of the steering
461 * entries. If it already exists, needs to be added as
462 * a duplicate for this entry.
463 */
464 list_for_each_entry(entry,
465 &s_steer->steer_entries[steer],
466 list) {
467 err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
468 if (err)
469 goto out_mailbox;
470
471 members_count = be32_to_cpu(mgm->members_count) &
472 0xffffff;
473 prot = be32_to_cpu(mgm->members_count) >> 30;
474 found = false;
475 for (i = 0; i < members_count; i++) {
476 if ((be32_to_cpu(mgm->qp[i]) &
477 MGM_QPN_MASK) == qpn) {
478 /* Entry already exists.
479 * Add to duplicates.
480 */
481 dqp = kmalloc(sizeof(*dqp), GFP_KERNEL);
482 if (!dqp) {
483 err = -ENOMEM;
484 goto out_mailbox;
485 }
486 dqp->qpn = qpn;
487 list_add_tail(&dqp->list,
488 &entry->duplicates);
489 found = true;
490 }
491 }
492 if (!found) {
493 /* Need to add the qpn to mgm */
494 if (members_count ==
495 dev->caps.num_qp_per_mgm) {
496 /* entry is full */
497 err = -ENOMEM;
498 goto out_mailbox;
499 }
500 mgm->qp[members_count++] =
501 cpu_to_be32(qpn & MGM_QPN_MASK);
502 mgm->members_count =
503 cpu_to_be32(members_count |
504 (prot << 30));
505 err = mlx4_WRITE_ENTRY(dev, entry->index,
506 mailbox);
507 if (err)
508 goto out_mailbox;
509 }
510 }
511 }
512
513 /* add the new qpn to list of promisc qps */
514 list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
515 /* now need to add all the promisc qps to default entry */
516 memset(mgm, 0, sizeof *mgm);
517 members_count = 0;
518 list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list) {
519 if (members_count == dev->caps.num_qp_per_mgm) {
520 /* entry is full */
521 err = -ENOMEM;
522 goto out_list;
523 }
524 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
525 }
526 mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
527
528 err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
529 if (err)
530 goto out_list;
531
532 mlx4_free_cmd_mailbox(dev, mailbox);
533 mutex_unlock(&priv->mcg_table.mutex);
534 return 0;
535
536 out_list:
537 list_del(&pqp->list);
538 out_mailbox:
539 mlx4_free_cmd_mailbox(dev, mailbox);
540 out_alloc:
541 kfree(pqp);
542 out_mutex:
543 mutex_unlock(&priv->mcg_table.mutex);
544 return err;
545 }
546
547 static int remove_promisc_qp(struct mlx4_dev *dev, u8 port,
548 enum mlx4_steer_type steer, u32 qpn)
549 {
550 struct mlx4_priv *priv = mlx4_priv(dev);
551 struct mlx4_steer *s_steer;
552 struct mlx4_cmd_mailbox *mailbox;
553 struct mlx4_mgm *mgm;
554 struct mlx4_steer_index *entry, *tmp_entry;
555 struct mlx4_promisc_qp *pqp;
556 struct mlx4_promisc_qp *dqp;
557 u32 members_count;
558 bool found;
559 bool back_to_list = false;
560 int i;
561 int err;
562
563 if (port < 1 || port > dev->caps.num_ports)
564 return -EINVAL;
565
566 s_steer = &mlx4_priv(dev)->steer[port - 1];
567 mutex_lock(&priv->mcg_table.mutex);
568
569 pqp = get_promisc_qp(dev, port, steer, qpn);
570 if (unlikely(!pqp)) {
571 mlx4_warn(dev, "QP %x is not promiscuous QP\n", qpn);
572 /* nothing to do */
573 err = 0;
574 goto out_mutex;
575 }
576
577 /*remove from list of promisc qps */
578 list_del(&pqp->list);
579
580 /* set the default entry not to include the removed one */
581 mailbox = mlx4_alloc_cmd_mailbox(dev);
582 if (IS_ERR(mailbox)) {
583 err = -ENOMEM;
584 back_to_list = true;
585 goto out_list;
586 }
587 mgm = mailbox->buf;
588 members_count = 0;
589 list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
590 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
591 mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
592
593 err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
594 if (err)
595 goto out_mailbox;
596
597 if (!(mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)) {
598 /* Remove the QP from all the steering entries */
599 list_for_each_entry_safe(entry, tmp_entry,
600 &s_steer->steer_entries[steer],
601 list) {
602 found = false;
603 list_for_each_entry(dqp, &entry->duplicates, list) {
604 if (dqp->qpn == qpn) {
605 found = true;
606 break;
607 }
608 }
609 if (found) {
610 /* A duplicate, no need to change the MGM,
611 * only update the duplicates list
612 */
613 list_del(&dqp->list);
614 kfree(dqp);
615 } else {
616 int loc = -1;
617
618 err = mlx4_READ_ENTRY(dev,
619 entry->index,
620 mailbox);
621 if (err)
622 goto out_mailbox;
623 members_count =
624 be32_to_cpu(mgm->members_count) &
625 0xffffff;
626 if (!members_count) {
627 mlx4_warn(dev, "QP %06x wasn't found in entry %x mcount=0. deleting entry...\n",
628 qpn, entry->index);
629 list_del(&entry->list);
630 kfree(entry);
631 continue;
632 }
633
634 for (i = 0; i < members_count; ++i)
635 if ((be32_to_cpu(mgm->qp[i]) &
636 MGM_QPN_MASK) == qpn) {
637 loc = i;
638 break;
639 }
640
641 if (loc < 0) {
642 mlx4_err(dev, "QP %06x wasn't found in entry %d\n",
643 qpn, entry->index);
644 err = -EINVAL;
645 goto out_mailbox;
646 }
647
648 /* Copy the last QP in this MGM
649 * over removed QP
650 */
651 mgm->qp[loc] = mgm->qp[members_count - 1];
652 mgm->qp[members_count - 1] = 0;
653 mgm->members_count =
654 cpu_to_be32(--members_count |
655 (MLX4_PROT_ETH << 30));
656
657 err = mlx4_WRITE_ENTRY(dev,
658 entry->index,
659 mailbox);
660 if (err)
661 goto out_mailbox;
662 }
663 }
664 }
665
666 out_mailbox:
667 mlx4_free_cmd_mailbox(dev, mailbox);
668 out_list:
669 if (back_to_list)
670 list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
671 else
672 kfree(pqp);
673 out_mutex:
674 mutex_unlock(&priv->mcg_table.mutex);
675 return err;
676 }
677
678 /*
679 * Caller must hold MCG table semaphore. gid and mgm parameters must
680 * be properly aligned for command interface.
681 *
682 * Returns 0 unless a firmware command error occurs.
683 *
684 * If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
685 * and *mgm holds MGM entry.
686 *
687 * if GID is found in AMGM, *index = index in AMGM, *prev = index of
688 * previous entry in hash chain and *mgm holds AMGM entry.
689 *
690 * If no AMGM exists for given gid, *index = -1, *prev = index of last
691 * entry in hash chain and *mgm holds end of hash chain.
692 */
693 static int find_entry(struct mlx4_dev *dev, u8 port,
694 u8 *gid, enum mlx4_protocol prot,
695 struct mlx4_cmd_mailbox *mgm_mailbox,
696 int *prev, int *index)
697 {
698 struct mlx4_cmd_mailbox *mailbox;
699 struct mlx4_mgm *mgm = mgm_mailbox->buf;
700 u8 *mgid;
701 int err;
702 u16 hash;
703 u8 op_mod = (prot == MLX4_PROT_ETH) ?
704 !!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) : 0;
705
706 mailbox = mlx4_alloc_cmd_mailbox(dev);
707 if (IS_ERR(mailbox))
708 return -ENOMEM;
709 mgid = mailbox->buf;
710
711 memcpy(mgid, gid, 16);
712
713 err = mlx4_GID_HASH(dev, mailbox, &hash, op_mod);
714 mlx4_free_cmd_mailbox(dev, mailbox);
715 if (err)
716 return err;
717
718 if (0)
719 mlx4_dbg(dev, "Hash for %pI6 is %04x\n", gid, hash);
720
721 *index = hash;
722 *prev = -1;
723
724 do {
725 err = mlx4_READ_ENTRY(dev, *index, mgm_mailbox);
726 if (err)
727 return err;
728
729 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
730 if (*index != hash) {
731 mlx4_err(dev, "Found zero MGID in AMGM\n");
732 err = -EINVAL;
733 }
734 return err;
735 }
736
737 if (!memcmp(mgm->gid, gid, 16) &&
738 be32_to_cpu(mgm->members_count) >> 30 == prot)
739 return err;
740
741 *prev = *index;
742 *index = be32_to_cpu(mgm->next_gid_index) >> 6;
743 } while (*index);
744
745 *index = -1;
746 return err;
747 }
748
749 static const u8 __promisc_mode[] = {
750 [MLX4_FS_REGULAR] = 0x0,
751 [MLX4_FS_ALL_DEFAULT] = 0x1,
752 [MLX4_FS_MC_DEFAULT] = 0x3,
753 [MLX4_FS_MIRROR_RX_PORT] = 0x4,
754 [MLX4_FS_MIRROR_SX_PORT] = 0x5,
755 [MLX4_FS_UC_SNIFFER] = 0x6,
756 [MLX4_FS_MC_SNIFFER] = 0x7,
757 };
758
759 int mlx4_map_sw_to_hw_steering_mode(struct mlx4_dev *dev,
760 enum mlx4_net_trans_promisc_mode flow_type)
761 {
762 if (flow_type >= MLX4_FS_MODE_NUM) {
763 mlx4_err(dev, "Invalid flow type. type = %d\n", flow_type);
764 return -EINVAL;
765 }
766 return __promisc_mode[flow_type];
767 }
768 EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_mode);
769
770 static void trans_rule_ctrl_to_hw(struct mlx4_net_trans_rule *ctrl,
771 struct mlx4_net_trans_rule_hw_ctrl *hw)
772 {
773 u8 flags = 0;
774
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;
778
779 hw->flags = flags;
780 hw->type = __promisc_mode[ctrl->promisc_mode];
781 hw->prio = cpu_to_be16(ctrl->priority);
782 hw->port = ctrl->port;
783 hw->qpn = cpu_to_be32(ctrl->qpn);
784 }
785
786 const 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,
792 [MLX4_NET_TRANS_RULE_ID_UDP] = 0xE006,
793 [MLX4_NET_TRANS_RULE_ID_VXLAN] = 0xE008
794 };
795
796 int mlx4_map_sw_to_hw_steering_id(struct mlx4_dev *dev,
797 enum mlx4_net_trans_rule_id id)
798 {
799 if (id >= MLX4_NET_TRANS_RULE_NUM) {
800 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
801 return -EINVAL;
802 }
803 return __sw_id_hw[id];
804 }
805 EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_id);
806
807 static 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] =
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)
821 };
822
823 int mlx4_hw_rule_sz(struct mlx4_dev *dev,
824 enum mlx4_net_trans_rule_id id)
825 {
826 if (id >= MLX4_NET_TRANS_RULE_NUM) {
827 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
828 return -EINVAL;
829 }
830
831 return __rule_hw_sz[id];
832 }
833 EXPORT_SYMBOL_GPL(mlx4_hw_rule_sz);
834
835 static int parse_trans_rule(struct mlx4_dev *dev, struct mlx4_spec_list *spec,
836 struct _rule_hw *rule_hw)
837 {
838 if (mlx4_hw_rule_sz(dev, spec->id) < 0)
839 return -EINVAL;
840 memset(rule_hw, 0, mlx4_hw_rule_sz(dev, spec->id));
841 rule_hw->id = cpu_to_be16(__sw_id_hw[spec->id]);
842 rule_hw->size = mlx4_hw_rule_sz(dev, spec->id) >> 2;
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 }
856 rule_hw->eth.vlan_tag = spec->eth.vlan_id;
857 rule_hw->eth.vlan_tag_msk = spec->eth.vlan_id_msk;
858 break;
859
860 case MLX4_NET_TRANS_RULE_ID_IB:
861 rule_hw->ib.l3_qpn = spec->ib.l3_qpn;
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
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
892 default:
893 return -EINVAL;
894 }
895
896 return __rule_hw_sz[spec->id];
897 }
898
899 static 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
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;
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)
973 mlx4_err(dev, "Network rule error message was truncated, print buffer is too small\n");
974 }
975
976 int 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
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);
996 return ret;
997 }
998 size += ret;
999 }
1000
1001 ret = mlx4_QP_FLOW_STEERING_ATTACH(dev, mailbox, size >> 2, reg_id);
1002 if (ret == -ENOMEM) {
1003 mlx4_err_rule(dev,
1004 "mcg table is full. Fail to register network rule\n",
1005 rule);
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 }
1023
1024 mlx4_free_cmd_mailbox(dev, mailbox);
1025
1026 return ret;
1027 }
1028 EXPORT_SYMBOL_GPL(mlx4_flow_attach);
1029
1030 int 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 }
1040 EXPORT_SYMBOL_GPL(mlx4_flow_detach);
1041
1042 int 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 }
1078 EXPORT_SYMBOL(mlx4_tunnel_steer_add);
1079
1080 int 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 }
1095 EXPORT_SYMBOL_GPL(mlx4_FLOW_STEERING_IB_UC_QP_RANGE);
1096
1097 int 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)
1100 {
1101 struct mlx4_priv *priv = mlx4_priv(dev);
1102 struct mlx4_cmd_mailbox *mailbox;
1103 struct mlx4_mgm *mgm;
1104 u32 members_count;
1105 int index = -1, prev;
1106 int link = 0;
1107 int i;
1108 int err;
1109 u8 port = gid[5];
1110 u8 new_entry = 0;
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);
1118 err = find_entry(dev, port, gid, prot,
1119 mailbox, &prev, &index);
1120 if (err)
1121 goto out;
1122
1123 if (index != -1) {
1124 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
1125 new_entry = 1;
1126 memcpy(mgm->gid, gid, 16);
1127 }
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
1139 new_entry = 1;
1140 memset(mgm, 0, sizeof *mgm);
1141 memcpy(mgm->gid, gid, 16);
1142 }
1143
1144 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
1145 if (members_count == dev->caps.num_qp_per_mgm) {
1146 mlx4_err(dev, "MGM at index %x is full\n", index);
1147 err = -ENOMEM;
1148 goto out;
1149 }
1150
1151 for (i = 0; i < members_count; ++i)
1152 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
1153 mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn);
1154 err = 0;
1155 goto out;
1156 }
1157
1158 if (block_mcast_loopback)
1159 mgm->qp[members_count++] = cpu_to_be32((qp->qpn & MGM_QPN_MASK) |
1160 (1U << MGM_BLCK_LB_BIT));
1161 else
1162 mgm->qp[members_count++] = cpu_to_be32(qp->qpn & MGM_QPN_MASK);
1163
1164 mgm->members_count = cpu_to_be32(members_count | (u32) prot << 30);
1165
1166 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1167 if (err)
1168 goto out;
1169
1170 if (!link)
1171 goto out;
1172
1173 err = mlx4_READ_ENTRY(dev, prev, mailbox);
1174 if (err)
1175 goto out;
1176
1177 mgm->next_gid_index = cpu_to_be32(index << 6);
1178
1179 err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
1180 if (err)
1181 goto out;
1182
1183 out:
1184 if (prot == MLX4_PROT_ETH && index != -1) {
1185 /* manage the steering entry for promisc mode */
1186 if (new_entry)
1187 err = new_steering_entry(dev, port, steer,
1188 index, qp->qpn);
1189 else
1190 err = existing_steering_entry(dev, port, steer,
1191 index, qp->qpn);
1192 }
1193 if (err && link && index != -1) {
1194 if (index < dev->caps.num_mgms)
1195 mlx4_warn(dev, "Got AMGM index %d < %d\n",
1196 index, dev->caps.num_mgms);
1197 else
1198 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1199 index - dev->caps.num_mgms, MLX4_USE_RR);
1200 }
1201 mutex_unlock(&priv->mcg_table.mutex);
1202
1203 mlx4_free_cmd_mailbox(dev, mailbox);
1204 return err;
1205 }
1206
1207 int 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)
1209 {
1210 struct mlx4_priv *priv = mlx4_priv(dev);
1211 struct mlx4_cmd_mailbox *mailbox;
1212 struct mlx4_mgm *mgm;
1213 u32 members_count;
1214 int prev, index;
1215 int i, loc = -1;
1216 int err;
1217 u8 port = gid[5];
1218 bool removed_entry = false;
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
1227 err = find_entry(dev, port, gid, prot,
1228 mailbox, &prev, &index);
1229 if (err)
1230 goto out;
1231
1232 if (index == -1) {
1233 mlx4_err(dev, "MGID %pI6 not found\n", gid);
1234 err = -EINVAL;
1235 goto out;
1236 }
1237
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 */
1241 if (prot == MLX4_PROT_ETH &&
1242 check_duplicate_entry(dev, port, steer, index, qp->qpn) &&
1243 !promisc_steering_entry(dev, port, steer, index, qp->qpn, NULL))
1244 goto out;
1245
1246 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
1247 for (i = 0; i < members_count; ++i)
1248 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
1249 loc = i;
1250 break;
1251 }
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
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;
1262 mgm->members_count = cpu_to_be32(--members_count | (u32) prot << 30);
1263
1264 if (prot == MLX4_PROT_ETH)
1265 removed_entry = can_remove_steering_entry(dev, port, steer,
1266 index, qp->qpn);
1267 if (members_count && (prot != MLX4_PROT_ETH || !removed_entry)) {
1268 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1269 goto out;
1270 }
1271
1272 /* We are going to delete the entry, members count should be 0 */
1273 mgm->members_count = cpu_to_be32((u32) prot << 30);
1274
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) {
1279 err = mlx4_READ_ENTRY(dev, amgm_index, mailbox);
1280 if (err)
1281 goto out;
1282 } else
1283 memset(mgm->gid, 0, 16);
1284
1285 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1286 if (err)
1287 goto out;
1288
1289 if (amgm_index) {
1290 if (amgm_index < dev->caps.num_mgms)
1291 mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d\n",
1292 index, amgm_index, dev->caps.num_mgms);
1293 else
1294 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1295 amgm_index - dev->caps.num_mgms, MLX4_USE_RR);
1296 }
1297 } else {
1298 /* Remove entry from AMGM */
1299 int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
1300 err = mlx4_READ_ENTRY(dev, prev, mailbox);
1301 if (err)
1302 goto out;
1303
1304 mgm->next_gid_index = cpu_to_be32(cur_next_index << 6);
1305
1306 err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
1307 if (err)
1308 goto out;
1309
1310 if (index < dev->caps.num_mgms)
1311 mlx4_warn(dev, "entry %d had next AMGM index %d < %d\n",
1312 prev, index, dev->caps.num_mgms);
1313 else
1314 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1315 index - dev->caps.num_mgms, MLX4_USE_RR);
1316 }
1317
1318 out:
1319 mutex_unlock(&priv->mcg_table.mutex);
1320
1321 mlx4_free_cmd_mailbox(dev, mailbox);
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;
1325 return err;
1326 }
1327
1328 static 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);
1354 if (err && !attach &&
1355 dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
1356 err = 0;
1357 return err;
1358 }
1359
1360 int 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)
1364 {
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,
1371 .promisc_mode = MLX4_FS_REGULAR,
1372 .priority = MLX4_DOMAIN_NIC,
1373 };
1374
1375 rule.allow_loopback = !block_mcast_loopback;
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);
1398 }
1399
1400 int 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);
1419
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);
1424 default:
1425 return -EINVAL;
1426 }
1427 }
1428 EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
1429
1430 int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1431 enum mlx4_protocol prot, u64 reg_id)
1432 {
1433 switch (dev->caps.steering_mode) {
1434 case MLX4_STEERING_MODE_A0:
1435 if (prot == MLX4_PROT_ETH)
1436 return 0;
1437
1438 case MLX4_STEERING_MODE_B0:
1439 if (prot == MLX4_PROT_ETH)
1440 gid[7] |= (MLX4_MC_STEER << 1);
1441
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);
1447
1448 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1449 return mlx4_flow_detach(dev, reg_id);
1450
1451 default:
1452 return -EINVAL;
1453 }
1454 }
1455 EXPORT_SYMBOL_GPL(mlx4_multicast_detach);
1456
1457 int 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 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
1462 .exclusive = 0,
1463 .allow_loopback = 1,
1464 };
1465
1466 u64 *regid_p;
1467
1468 switch (mode) {
1469 case MLX4_FS_ALL_DEFAULT:
1470 regid_p = &dev->regid_promisc_array[port];
1471 break;
1472 case MLX4_FS_MC_DEFAULT:
1473 regid_p = &dev->regid_allmulti_array[port];
1474 break;
1475 default:
1476 return -1;
1477 }
1478
1479 if (*regid_p != 0)
1480 return -1;
1481
1482 rule.promisc_mode = mode;
1483 rule.port = port;
1484 rule.qpn = qpn;
1485 INIT_LIST_HEAD(&rule.list);
1486 mlx4_err(dev, "going promisc on %x\n", port);
1487
1488 return mlx4_flow_attach(dev, &rule, regid_p);
1489 }
1490 EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_add);
1491
1492 int mlx4_flow_steer_promisc_remove(struct mlx4_dev *dev, u8 port,
1493 enum mlx4_net_trans_promisc_mode mode)
1494 {
1495 int ret;
1496 u64 *regid_p;
1497
1498 switch (mode) {
1499 case MLX4_FS_ALL_DEFAULT:
1500 regid_p = &dev->regid_promisc_array[port];
1501 break;
1502 case MLX4_FS_MC_DEFAULT:
1503 regid_p = &dev->regid_allmulti_array[port];
1504 break;
1505 default:
1506 return -1;
1507 }
1508
1509 if (*regid_p == 0)
1510 return -1;
1511
1512 ret = mlx4_flow_detach(dev, *regid_p);
1513 if (ret == 0)
1514 *regid_p = 0;
1515
1516 return ret;
1517 }
1518 EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_remove);
1519
1520 int mlx4_unicast_attach(struct mlx4_dev *dev,
1521 struct mlx4_qp *qp, u8 gid[16],
1522 int block_mcast_loopback, enum mlx4_protocol prot)
1523 {
1524 if (prot == MLX4_PROT_ETH)
1525 gid[7] |= (MLX4_UC_STEER << 1);
1526
1527 if (mlx4_is_mfunc(dev))
1528 return mlx4_QP_ATTACH(dev, qp, gid, 1,
1529 block_mcast_loopback, prot);
1530
1531 return mlx4_qp_attach_common(dev, qp, gid, block_mcast_loopback,
1532 prot, MLX4_UC_STEER);
1533 }
1534 EXPORT_SYMBOL_GPL(mlx4_unicast_attach);
1535
1536 int mlx4_unicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp,
1537 u8 gid[16], enum mlx4_protocol prot)
1538 {
1539 if (prot == MLX4_PROT_ETH)
1540 gid[7] |= (MLX4_UC_STEER << 1);
1541
1542 if (mlx4_is_mfunc(dev))
1543 return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
1544
1545 return mlx4_qp_detach_common(dev, qp, gid, prot, MLX4_UC_STEER);
1546 }
1547 EXPORT_SYMBOL_GPL(mlx4_unicast_detach);
1548
1549 int mlx4_PROMISC_wrapper(struct mlx4_dev *dev, int slave,
1550 struct mlx4_vhcr *vhcr,
1551 struct mlx4_cmd_mailbox *inbox,
1552 struct mlx4_cmd_mailbox *outbox,
1553 struct mlx4_cmd_info *cmd)
1554 {
1555 u32 qpn = (u32) vhcr->in_param & 0xffffffff;
1556 int port = mlx4_slave_convert_port(dev, slave, vhcr->in_param >> 62);
1557 enum mlx4_steer_type steer = vhcr->in_modifier;
1558
1559 if (port < 0)
1560 return -EINVAL;
1561
1562 /* Promiscuous unicast is not allowed in mfunc */
1563 if (mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)
1564 return 0;
1565
1566 if (vhcr->op_modifier)
1567 return add_promisc_qp(dev, port, steer, qpn);
1568 else
1569 return remove_promisc_qp(dev, port, steer, qpn);
1570 }
1571
1572 static int mlx4_PROMISC(struct mlx4_dev *dev, u32 qpn,
1573 enum mlx4_steer_type steer, u8 add, u8 port)
1574 {
1575 return mlx4_cmd(dev, (u64) qpn | (u64) port << 62, (u32) steer, add,
1576 MLX4_CMD_PROMISC, MLX4_CMD_TIME_CLASS_A,
1577 MLX4_CMD_WRAPPED);
1578 }
1579
1580 int mlx4_multicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1581 {
1582 if (mlx4_is_mfunc(dev))
1583 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 1, port);
1584
1585 return add_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
1586 }
1587 EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_add);
1588
1589 int mlx4_multicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1590 {
1591 if (mlx4_is_mfunc(dev))
1592 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 0, port);
1593
1594 return remove_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
1595 }
1596 EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_remove);
1597
1598 int mlx4_unicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1599 {
1600 if (mlx4_is_mfunc(dev))
1601 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 1, port);
1602
1603 return add_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
1604 }
1605 EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_add);
1606
1607 int mlx4_unicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1608 {
1609 if (mlx4_is_mfunc(dev))
1610 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 0, port);
1611
1612 return remove_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
1613 }
1614 EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_remove);
1615
1616 int mlx4_init_mcg_table(struct mlx4_dev *dev)
1617 {
1618 struct mlx4_priv *priv = mlx4_priv(dev);
1619 int err;
1620
1621 /* No need for mcg_table when fw managed the mcg table*/
1622 if (dev->caps.steering_mode ==
1623 MLX4_STEERING_MODE_DEVICE_MANAGED)
1624 return 0;
1625 err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms,
1626 dev->caps.num_amgms - 1, 0, 0);
1627 if (err)
1628 return err;
1629
1630 mutex_init(&priv->mcg_table.mutex);
1631
1632 return 0;
1633 }
1634
1635 void mlx4_cleanup_mcg_table(struct mlx4_dev *dev)
1636 {
1637 if (dev->caps.steering_mode !=
1638 MLX4_STEERING_MODE_DEVICE_MANAGED)
1639 mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap);
1640 }