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net/mlx4_core: Remove unnecessary validation for port number
[mirror_ubuntu-bionic-kernel.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 static const u8 zero_gid[16]; /* automatically initialized to 0 */
43
44 int mlx4_get_mgm_entry_size(struct mlx4_dev *dev)
45 {
46 return 1 << dev->oper_log_mgm_entry_size;
47 }
48
49 int mlx4_get_qp_per_mgm(struct mlx4_dev *dev)
50 {
51 return 4 * (mlx4_get_mgm_entry_size(dev) / 16 - 2);
52 }
53
54 static int mlx4_QP_FLOW_STEERING_ATTACH(struct mlx4_dev *dev,
55 struct mlx4_cmd_mailbox *mailbox,
56 u32 size,
57 u64 *reg_id)
58 {
59 u64 imm;
60 int err = 0;
61
62 err = mlx4_cmd_imm(dev, mailbox->dma, &imm, size, 0,
63 MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,
64 MLX4_CMD_NATIVE);
65 if (err)
66 return err;
67 *reg_id = imm;
68
69 return err;
70 }
71
72 static int mlx4_QP_FLOW_STEERING_DETACH(struct mlx4_dev *dev, u64 regid)
73 {
74 int err = 0;
75
76 err = mlx4_cmd(dev, regid, 0, 0,
77 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
78 MLX4_CMD_NATIVE);
79
80 return err;
81 }
82
83 static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index,
84 struct mlx4_cmd_mailbox *mailbox)
85 {
86 return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG,
87 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
88 }
89
90 static int mlx4_WRITE_ENTRY(struct mlx4_dev *dev, int index,
91 struct mlx4_cmd_mailbox *mailbox)
92 {
93 return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG,
94 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
95 }
96
97 static int mlx4_WRITE_PROMISC(struct mlx4_dev *dev, u8 port, u8 steer,
98 struct mlx4_cmd_mailbox *mailbox)
99 {
100 u32 in_mod;
101
102 in_mod = (u32) port << 16 | steer << 1;
103 return mlx4_cmd(dev, mailbox->dma, in_mod, 0x1,
104 MLX4_CMD_WRITE_MCG, MLX4_CMD_TIME_CLASS_A,
105 MLX4_CMD_NATIVE);
106 }
107
108 static int mlx4_GID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
109 u16 *hash, u8 op_mod)
110 {
111 u64 imm;
112 int err;
113
114 err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, op_mod,
115 MLX4_CMD_MGID_HASH, MLX4_CMD_TIME_CLASS_A,
116 MLX4_CMD_NATIVE);
117
118 if (!err)
119 *hash = imm;
120
121 return err;
122 }
123
124 static struct mlx4_promisc_qp *get_promisc_qp(struct mlx4_dev *dev, u8 port,
125 enum mlx4_steer_type steer,
126 u32 qpn)
127 {
128 struct mlx4_steer *s_steer;
129 struct mlx4_promisc_qp *pqp;
130
131 if (port < 1 || port > dev->caps.num_ports)
132 return NULL;
133
134 s_steer = &mlx4_priv(dev)->steer[port - 1];
135
136 list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
137 if (pqp->qpn == qpn)
138 return pqp;
139 }
140 /* not found */
141 return NULL;
142 }
143
144 /*
145 * Add new entry to steering data structure.
146 * All promisc QPs should be added as well
147 */
148 static int new_steering_entry(struct mlx4_dev *dev, u8 port,
149 enum mlx4_steer_type steer,
150 unsigned int index, u32 qpn)
151 {
152 struct mlx4_steer *s_steer;
153 struct mlx4_cmd_mailbox *mailbox;
154 struct mlx4_mgm *mgm;
155 u32 members_count;
156 struct mlx4_steer_index *new_entry;
157 struct mlx4_promisc_qp *pqp;
158 struct mlx4_promisc_qp *dqp = NULL;
159 u32 prot;
160 int err;
161
162 if (port < 1 || port > dev->caps.num_ports)
163 return -EINVAL;
164
165 s_steer = &mlx4_priv(dev)->steer[port - 1];
166 new_entry = kzalloc(sizeof *new_entry, GFP_KERNEL);
167 if (!new_entry)
168 return -ENOMEM;
169
170 INIT_LIST_HEAD(&new_entry->duplicates);
171 new_entry->index = index;
172 list_add_tail(&new_entry->list, &s_steer->steer_entries[steer]);
173
174 /* If the given qpn is also a promisc qp,
175 * it should be inserted to duplicates list
176 */
177 pqp = get_promisc_qp(dev, port, steer, qpn);
178 if (pqp) {
179 dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
180 if (!dqp) {
181 err = -ENOMEM;
182 goto out_alloc;
183 }
184 dqp->qpn = qpn;
185 list_add_tail(&dqp->list, &new_entry->duplicates);
186 }
187
188 /* if no promisc qps for this vep, we are done */
189 if (list_empty(&s_steer->promisc_qps[steer]))
190 return 0;
191
192 /* now need to add all the promisc qps to the new
193 * steering entry, as they should also receive the packets
194 * destined to this address */
195 mailbox = mlx4_alloc_cmd_mailbox(dev);
196 if (IS_ERR(mailbox)) {
197 err = -ENOMEM;
198 goto out_alloc;
199 }
200 mgm = mailbox->buf;
201
202 err = mlx4_READ_ENTRY(dev, index, mailbox);
203 if (err)
204 goto out_mailbox;
205
206 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
207 prot = be32_to_cpu(mgm->members_count) >> 30;
208 list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
209 /* don't add already existing qpn */
210 if (pqp->qpn == qpn)
211 continue;
212 if (members_count == dev->caps.num_qp_per_mgm) {
213 /* out of space */
214 err = -ENOMEM;
215 goto out_mailbox;
216 }
217
218 /* add the qpn */
219 mgm->qp[members_count++] = cpu_to_be32(pqp->qpn & MGM_QPN_MASK);
220 }
221 /* update the qps count and update the entry with all the promisc qps*/
222 mgm->members_count = cpu_to_be32(members_count | (prot << 30));
223 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
224
225 out_mailbox:
226 mlx4_free_cmd_mailbox(dev, mailbox);
227 if (!err)
228 return 0;
229 out_alloc:
230 if (dqp) {
231 list_del(&dqp->list);
232 kfree(dqp);
233 }
234 list_del(&new_entry->list);
235 kfree(new_entry);
236 return err;
237 }
238
239 /* update the data structures with existing steering entry */
240 static int existing_steering_entry(struct mlx4_dev *dev, u8 port,
241 enum mlx4_steer_type steer,
242 unsigned int index, u32 qpn)
243 {
244 struct mlx4_steer *s_steer;
245 struct mlx4_steer_index *tmp_entry, *entry = NULL;
246 struct mlx4_promisc_qp *pqp;
247 struct mlx4_promisc_qp *dqp;
248
249 if (port < 1 || port > dev->caps.num_ports)
250 return -EINVAL;
251
252 s_steer = &mlx4_priv(dev)->steer[port - 1];
253
254 pqp = get_promisc_qp(dev, port, steer, qpn);
255 if (!pqp)
256 return 0; /* nothing to do */
257
258 list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
259 if (tmp_entry->index == index) {
260 entry = tmp_entry;
261 break;
262 }
263 }
264 if (unlikely(!entry)) {
265 mlx4_warn(dev, "Steering entry at index %x is not registered\n", index);
266 return -EINVAL;
267 }
268
269 /* the given qpn is listed as a promisc qpn
270 * we need to add it as a duplicate to this entry
271 * for future references */
272 list_for_each_entry(dqp, &entry->duplicates, list) {
273 if (qpn == pqp->qpn)
274 return 0; /* qp is already duplicated */
275 }
276
277 /* add the qp as a duplicate on this index */
278 dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
279 if (!dqp)
280 return -ENOMEM;
281 dqp->qpn = qpn;
282 list_add_tail(&dqp->list, &entry->duplicates);
283
284 return 0;
285 }
286
287 /* Check whether a qpn is a duplicate on steering entry
288 * If so, it should not be removed from mgm */
289 static bool check_duplicate_entry(struct mlx4_dev *dev, u8 port,
290 enum mlx4_steer_type steer,
291 unsigned int index, u32 qpn)
292 {
293 struct mlx4_steer *s_steer;
294 struct mlx4_steer_index *tmp_entry, *entry = NULL;
295 struct mlx4_promisc_qp *dqp, *tmp_dqp;
296
297 if (port < 1 || port > dev->caps.num_ports)
298 return NULL;
299
300 s_steer = &mlx4_priv(dev)->steer[port - 1];
301
302 /* if qp is not promisc, it cannot be duplicated */
303 if (!get_promisc_qp(dev, port, steer, qpn))
304 return false;
305
306 /* The qp is promisc qp so it is a duplicate on this index
307 * Find the index entry, and remove the duplicate */
308 list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
309 if (tmp_entry->index == index) {
310 entry = tmp_entry;
311 break;
312 }
313 }
314 if (unlikely(!entry)) {
315 mlx4_warn(dev, "Steering entry for index %x is not registered\n", index);
316 return false;
317 }
318 list_for_each_entry_safe(dqp, tmp_dqp, &entry->duplicates, list) {
319 if (dqp->qpn == qpn) {
320 list_del(&dqp->list);
321 kfree(dqp);
322 }
323 }
324 return true;
325 }
326
327 /* I a steering entry contains only promisc QPs, it can be removed. */
328 static bool can_remove_steering_entry(struct mlx4_dev *dev, u8 port,
329 enum mlx4_steer_type steer,
330 unsigned int index, u32 tqpn)
331 {
332 struct mlx4_steer *s_steer;
333 struct mlx4_cmd_mailbox *mailbox;
334 struct mlx4_mgm *mgm;
335 struct mlx4_steer_index *entry = NULL, *tmp_entry;
336 u32 qpn;
337 u32 members_count;
338 bool ret = false;
339 int i;
340
341 if (port < 1 || port > dev->caps.num_ports)
342 return NULL;
343
344 s_steer = &mlx4_priv(dev)->steer[port - 1];
345
346 mailbox = mlx4_alloc_cmd_mailbox(dev);
347 if (IS_ERR(mailbox))
348 return false;
349 mgm = mailbox->buf;
350
351 if (mlx4_READ_ENTRY(dev, index, mailbox))
352 goto out;
353 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
354 for (i = 0; i < members_count; i++) {
355 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 /* All the qps currently registered for this entry are promiscuous,
362 * Checking for duplicates */
363 ret = true;
364 list_for_each_entry_safe(entry, tmp_entry, &s_steer->steer_entries[steer], list) {
365 if (entry->index == index) {
366 if (list_empty(&entry->duplicates)) {
367 list_del(&entry->list);
368 kfree(entry);
369 } else {
370 /* This entry contains duplicates so it shouldn't be removed */
371 ret = false;
372 goto out;
373 }
374 }
375 }
376
377 out:
378 mlx4_free_cmd_mailbox(dev, mailbox);
379 return ret;
380 }
381
382 static int add_promisc_qp(struct mlx4_dev *dev, u8 port,
383 enum mlx4_steer_type steer, u32 qpn)
384 {
385 struct mlx4_steer *s_steer;
386 struct mlx4_cmd_mailbox *mailbox;
387 struct mlx4_mgm *mgm;
388 struct mlx4_steer_index *entry;
389 struct mlx4_promisc_qp *pqp;
390 struct mlx4_promisc_qp *dqp;
391 u32 members_count;
392 u32 prot;
393 int i;
394 bool found;
395 int err;
396 struct mlx4_priv *priv = mlx4_priv(dev);
397
398 if (port < 1 || port > dev->caps.num_ports)
399 return -EINVAL;
400
401 s_steer = &mlx4_priv(dev)->steer[port - 1];
402
403 mutex_lock(&priv->mcg_table.mutex);
404
405 if (get_promisc_qp(dev, port, steer, qpn)) {
406 err = 0; /* Noting to do, already exists */
407 goto out_mutex;
408 }
409
410 pqp = kmalloc(sizeof *pqp, GFP_KERNEL);
411 if (!pqp) {
412 err = -ENOMEM;
413 goto out_mutex;
414 }
415 pqp->qpn = qpn;
416
417 mailbox = mlx4_alloc_cmd_mailbox(dev);
418 if (IS_ERR(mailbox)) {
419 err = -ENOMEM;
420 goto out_alloc;
421 }
422 mgm = mailbox->buf;
423
424 /* the promisc qp needs to be added for each one of the steering
425 * entries, if it already exists, needs to be added as a duplicate
426 * for this entry */
427 list_for_each_entry(entry, &s_steer->steer_entries[steer], list) {
428 err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
429 if (err)
430 goto out_mailbox;
431
432 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
433 prot = be32_to_cpu(mgm->members_count) >> 30;
434 found = false;
435 for (i = 0; i < members_count; i++) {
436 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qpn) {
437 /* Entry already exists, add to duplicates */
438 dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
439 if (!dqp) {
440 err = -ENOMEM;
441 goto out_mailbox;
442 }
443 dqp->qpn = qpn;
444 list_add_tail(&dqp->list, &entry->duplicates);
445 found = true;
446 }
447 }
448 if (!found) {
449 /* Need to add the qpn to mgm */
450 if (members_count == dev->caps.num_qp_per_mgm) {
451 /* entry is full */
452 err = -ENOMEM;
453 goto out_mailbox;
454 }
455 mgm->qp[members_count++] = cpu_to_be32(qpn & MGM_QPN_MASK);
456 mgm->members_count = cpu_to_be32(members_count | (prot << 30));
457 err = mlx4_WRITE_ENTRY(dev, entry->index, mailbox);
458 if (err)
459 goto out_mailbox;
460 }
461 }
462
463 /* add the new qpn to list of promisc qps */
464 list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
465 /* now need to add all the promisc qps to default entry */
466 memset(mgm, 0, sizeof *mgm);
467 members_count = 0;
468 list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
469 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
470 mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
471
472 err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
473 if (err)
474 goto out_list;
475
476 mlx4_free_cmd_mailbox(dev, mailbox);
477 mutex_unlock(&priv->mcg_table.mutex);
478 return 0;
479
480 out_list:
481 list_del(&pqp->list);
482 out_mailbox:
483 mlx4_free_cmd_mailbox(dev, mailbox);
484 out_alloc:
485 kfree(pqp);
486 out_mutex:
487 mutex_unlock(&priv->mcg_table.mutex);
488 return err;
489 }
490
491 static int remove_promisc_qp(struct mlx4_dev *dev, u8 port,
492 enum mlx4_steer_type steer, u32 qpn)
493 {
494 struct mlx4_priv *priv = mlx4_priv(dev);
495 struct mlx4_steer *s_steer;
496 struct mlx4_cmd_mailbox *mailbox;
497 struct mlx4_mgm *mgm;
498 struct mlx4_steer_index *entry;
499 struct mlx4_promisc_qp *pqp;
500 struct mlx4_promisc_qp *dqp;
501 u32 members_count;
502 bool found;
503 bool back_to_list = false;
504 int loc, i;
505 int err;
506
507 if (port < 1 || port > dev->caps.num_ports)
508 return -EINVAL;
509
510 s_steer = &mlx4_priv(dev)->steer[port - 1];
511 mutex_lock(&priv->mcg_table.mutex);
512
513 pqp = get_promisc_qp(dev, port, steer, qpn);
514 if (unlikely(!pqp)) {
515 mlx4_warn(dev, "QP %x is not promiscuous QP\n", qpn);
516 /* nothing to do */
517 err = 0;
518 goto out_mutex;
519 }
520
521 /*remove from list of promisc qps */
522 list_del(&pqp->list);
523
524 /* set the default entry not to include the removed one */
525 mailbox = mlx4_alloc_cmd_mailbox(dev);
526 if (IS_ERR(mailbox)) {
527 err = -ENOMEM;
528 back_to_list = true;
529 goto out_list;
530 }
531 mgm = mailbox->buf;
532 members_count = 0;
533 list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
534 mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
535 mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
536
537 err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox);
538 if (err)
539 goto out_mailbox;
540
541 /* remove the qp from all the steering entries*/
542 list_for_each_entry(entry, &s_steer->steer_entries[steer], list) {
543 found = false;
544 list_for_each_entry(dqp, &entry->duplicates, list) {
545 if (dqp->qpn == qpn) {
546 found = true;
547 break;
548 }
549 }
550 if (found) {
551 /* a duplicate, no need to change the mgm,
552 * only update the duplicates list */
553 list_del(&dqp->list);
554 kfree(dqp);
555 } else {
556 err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
557 if (err)
558 goto out_mailbox;
559 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
560 for (loc = -1, i = 0; i < members_count; ++i)
561 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qpn)
562 loc = i;
563
564 mgm->members_count = cpu_to_be32(--members_count |
565 (MLX4_PROT_ETH << 30));
566 mgm->qp[loc] = mgm->qp[i - 1];
567 mgm->qp[i - 1] = 0;
568
569 err = mlx4_WRITE_ENTRY(dev, entry->index, mailbox);
570 if (err)
571 goto out_mailbox;
572 }
573
574 }
575
576 out_mailbox:
577 mlx4_free_cmd_mailbox(dev, mailbox);
578 out_list:
579 if (back_to_list)
580 list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
581 else
582 kfree(pqp);
583 out_mutex:
584 mutex_unlock(&priv->mcg_table.mutex);
585 return err;
586 }
587
588 /*
589 * Caller must hold MCG table semaphore. gid and mgm parameters must
590 * be properly aligned for command interface.
591 *
592 * Returns 0 unless a firmware command error occurs.
593 *
594 * If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
595 * and *mgm holds MGM entry.
596 *
597 * if GID is found in AMGM, *index = index in AMGM, *prev = index of
598 * previous entry in hash chain and *mgm holds AMGM entry.
599 *
600 * If no AMGM exists for given gid, *index = -1, *prev = index of last
601 * entry in hash chain and *mgm holds end of hash chain.
602 */
603 static int find_entry(struct mlx4_dev *dev, u8 port,
604 u8 *gid, enum mlx4_protocol prot,
605 struct mlx4_cmd_mailbox *mgm_mailbox,
606 int *prev, int *index)
607 {
608 struct mlx4_cmd_mailbox *mailbox;
609 struct mlx4_mgm *mgm = mgm_mailbox->buf;
610 u8 *mgid;
611 int err;
612 u16 hash;
613 u8 op_mod = (prot == MLX4_PROT_ETH) ?
614 !!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) : 0;
615
616 mailbox = mlx4_alloc_cmd_mailbox(dev);
617 if (IS_ERR(mailbox))
618 return -ENOMEM;
619 mgid = mailbox->buf;
620
621 memcpy(mgid, gid, 16);
622
623 err = mlx4_GID_HASH(dev, mailbox, &hash, op_mod);
624 mlx4_free_cmd_mailbox(dev, mailbox);
625 if (err)
626 return err;
627
628 if (0)
629 mlx4_dbg(dev, "Hash for %pI6 is %04x\n", gid, hash);
630
631 *index = hash;
632 *prev = -1;
633
634 do {
635 err = mlx4_READ_ENTRY(dev, *index, mgm_mailbox);
636 if (err)
637 return err;
638
639 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
640 if (*index != hash) {
641 mlx4_err(dev, "Found zero MGID in AMGM.\n");
642 err = -EINVAL;
643 }
644 return err;
645 }
646
647 if (!memcmp(mgm->gid, gid, 16) &&
648 be32_to_cpu(mgm->members_count) >> 30 == prot)
649 return err;
650
651 *prev = *index;
652 *index = be32_to_cpu(mgm->next_gid_index) >> 6;
653 } while (*index);
654
655 *index = -1;
656 return err;
657 }
658
659 static const u8 __promisc_mode[] = {
660 [MLX4_FS_REGULAR] = 0x0,
661 [MLX4_FS_ALL_DEFAULT] = 0x1,
662 [MLX4_FS_MC_DEFAULT] = 0x3,
663 [MLX4_FS_UC_SNIFFER] = 0x4,
664 [MLX4_FS_MC_SNIFFER] = 0x5,
665 };
666
667 int mlx4_map_sw_to_hw_steering_mode(struct mlx4_dev *dev,
668 enum mlx4_net_trans_promisc_mode flow_type)
669 {
670 if (flow_type >= MLX4_FS_MODE_NUM) {
671 mlx4_err(dev, "Invalid flow type. type = %d\n", flow_type);
672 return -EINVAL;
673 }
674 return __promisc_mode[flow_type];
675 }
676 EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_mode);
677
678 static void trans_rule_ctrl_to_hw(struct mlx4_net_trans_rule *ctrl,
679 struct mlx4_net_trans_rule_hw_ctrl *hw)
680 {
681 u8 flags = 0;
682
683 flags = ctrl->queue_mode == MLX4_NET_TRANS_Q_LIFO ? 1 : 0;
684 flags |= ctrl->exclusive ? (1 << 2) : 0;
685 flags |= ctrl->allow_loopback ? (1 << 3) : 0;
686
687 hw->flags = flags;
688 hw->type = __promisc_mode[ctrl->promisc_mode];
689 hw->prio = cpu_to_be16(ctrl->priority);
690 hw->port = ctrl->port;
691 hw->qpn = cpu_to_be32(ctrl->qpn);
692 }
693
694 const u16 __sw_id_hw[] = {
695 [MLX4_NET_TRANS_RULE_ID_ETH] = 0xE001,
696 [MLX4_NET_TRANS_RULE_ID_IB] = 0xE005,
697 [MLX4_NET_TRANS_RULE_ID_IPV6] = 0xE003,
698 [MLX4_NET_TRANS_RULE_ID_IPV4] = 0xE002,
699 [MLX4_NET_TRANS_RULE_ID_TCP] = 0xE004,
700 [MLX4_NET_TRANS_RULE_ID_UDP] = 0xE006,
701 [MLX4_NET_TRANS_RULE_ID_VXLAN] = 0xE008
702 };
703
704 int mlx4_map_sw_to_hw_steering_id(struct mlx4_dev *dev,
705 enum mlx4_net_trans_rule_id id)
706 {
707 if (id >= MLX4_NET_TRANS_RULE_NUM) {
708 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
709 return -EINVAL;
710 }
711 return __sw_id_hw[id];
712 }
713 EXPORT_SYMBOL_GPL(mlx4_map_sw_to_hw_steering_id);
714
715 static const int __rule_hw_sz[] = {
716 [MLX4_NET_TRANS_RULE_ID_ETH] =
717 sizeof(struct mlx4_net_trans_rule_hw_eth),
718 [MLX4_NET_TRANS_RULE_ID_IB] =
719 sizeof(struct mlx4_net_trans_rule_hw_ib),
720 [MLX4_NET_TRANS_RULE_ID_IPV6] = 0,
721 [MLX4_NET_TRANS_RULE_ID_IPV4] =
722 sizeof(struct mlx4_net_trans_rule_hw_ipv4),
723 [MLX4_NET_TRANS_RULE_ID_TCP] =
724 sizeof(struct mlx4_net_trans_rule_hw_tcp_udp),
725 [MLX4_NET_TRANS_RULE_ID_UDP] =
726 sizeof(struct mlx4_net_trans_rule_hw_tcp_udp),
727 [MLX4_NET_TRANS_RULE_ID_VXLAN] =
728 sizeof(struct mlx4_net_trans_rule_hw_vxlan)
729 };
730
731 int mlx4_hw_rule_sz(struct mlx4_dev *dev,
732 enum mlx4_net_trans_rule_id id)
733 {
734 if (id >= MLX4_NET_TRANS_RULE_NUM) {
735 mlx4_err(dev, "Invalid network rule id. id = %d\n", id);
736 return -EINVAL;
737 }
738
739 return __rule_hw_sz[id];
740 }
741 EXPORT_SYMBOL_GPL(mlx4_hw_rule_sz);
742
743 static int parse_trans_rule(struct mlx4_dev *dev, struct mlx4_spec_list *spec,
744 struct _rule_hw *rule_hw)
745 {
746 if (mlx4_hw_rule_sz(dev, spec->id) < 0)
747 return -EINVAL;
748 memset(rule_hw, 0, mlx4_hw_rule_sz(dev, spec->id));
749 rule_hw->id = cpu_to_be16(__sw_id_hw[spec->id]);
750 rule_hw->size = mlx4_hw_rule_sz(dev, spec->id) >> 2;
751
752 switch (spec->id) {
753 case MLX4_NET_TRANS_RULE_ID_ETH:
754 memcpy(rule_hw->eth.dst_mac, spec->eth.dst_mac, ETH_ALEN);
755 memcpy(rule_hw->eth.dst_mac_msk, spec->eth.dst_mac_msk,
756 ETH_ALEN);
757 memcpy(rule_hw->eth.src_mac, spec->eth.src_mac, ETH_ALEN);
758 memcpy(rule_hw->eth.src_mac_msk, spec->eth.src_mac_msk,
759 ETH_ALEN);
760 if (spec->eth.ether_type_enable) {
761 rule_hw->eth.ether_type_enable = 1;
762 rule_hw->eth.ether_type = spec->eth.ether_type;
763 }
764 rule_hw->eth.vlan_tag = spec->eth.vlan_id;
765 rule_hw->eth.vlan_tag_msk = spec->eth.vlan_id_msk;
766 break;
767
768 case MLX4_NET_TRANS_RULE_ID_IB:
769 rule_hw->ib.l3_qpn = spec->ib.l3_qpn;
770 rule_hw->ib.qpn_mask = spec->ib.qpn_msk;
771 memcpy(&rule_hw->ib.dst_gid, &spec->ib.dst_gid, 16);
772 memcpy(&rule_hw->ib.dst_gid_msk, &spec->ib.dst_gid_msk, 16);
773 break;
774
775 case MLX4_NET_TRANS_RULE_ID_IPV6:
776 return -EOPNOTSUPP;
777
778 case MLX4_NET_TRANS_RULE_ID_IPV4:
779 rule_hw->ipv4.src_ip = spec->ipv4.src_ip;
780 rule_hw->ipv4.src_ip_msk = spec->ipv4.src_ip_msk;
781 rule_hw->ipv4.dst_ip = spec->ipv4.dst_ip;
782 rule_hw->ipv4.dst_ip_msk = spec->ipv4.dst_ip_msk;
783 break;
784
785 case MLX4_NET_TRANS_RULE_ID_TCP:
786 case MLX4_NET_TRANS_RULE_ID_UDP:
787 rule_hw->tcp_udp.dst_port = spec->tcp_udp.dst_port;
788 rule_hw->tcp_udp.dst_port_msk = spec->tcp_udp.dst_port_msk;
789 rule_hw->tcp_udp.src_port = spec->tcp_udp.src_port;
790 rule_hw->tcp_udp.src_port_msk = spec->tcp_udp.src_port_msk;
791 break;
792
793 case MLX4_NET_TRANS_RULE_ID_VXLAN:
794 rule_hw->vxlan.vni =
795 cpu_to_be32(be32_to_cpu(spec->vxlan.vni) << 8);
796 rule_hw->vxlan.vni_mask =
797 cpu_to_be32(be32_to_cpu(spec->vxlan.vni_mask) << 8);
798 break;
799
800 default:
801 return -EINVAL;
802 }
803
804 return __rule_hw_sz[spec->id];
805 }
806
807 static void mlx4_err_rule(struct mlx4_dev *dev, char *str,
808 struct mlx4_net_trans_rule *rule)
809 {
810 #define BUF_SIZE 256
811 struct mlx4_spec_list *cur;
812 char buf[BUF_SIZE];
813 int len = 0;
814
815 mlx4_err(dev, "%s", str);
816 len += snprintf(buf + len, BUF_SIZE - len,
817 "port = %d prio = 0x%x qp = 0x%x ",
818 rule->port, rule->priority, rule->qpn);
819
820 list_for_each_entry(cur, &rule->list, list) {
821 switch (cur->id) {
822 case MLX4_NET_TRANS_RULE_ID_ETH:
823 len += snprintf(buf + len, BUF_SIZE - len,
824 "dmac = %pM ", &cur->eth.dst_mac);
825 if (cur->eth.ether_type)
826 len += snprintf(buf + len, BUF_SIZE - len,
827 "ethertype = 0x%x ",
828 be16_to_cpu(cur->eth.ether_type));
829 if (cur->eth.vlan_id)
830 len += snprintf(buf + len, BUF_SIZE - len,
831 "vlan-id = %d ",
832 be16_to_cpu(cur->eth.vlan_id));
833 break;
834
835 case MLX4_NET_TRANS_RULE_ID_IPV4:
836 if (cur->ipv4.src_ip)
837 len += snprintf(buf + len, BUF_SIZE - len,
838 "src-ip = %pI4 ",
839 &cur->ipv4.src_ip);
840 if (cur->ipv4.dst_ip)
841 len += snprintf(buf + len, BUF_SIZE - len,
842 "dst-ip = %pI4 ",
843 &cur->ipv4.dst_ip);
844 break;
845
846 case MLX4_NET_TRANS_RULE_ID_TCP:
847 case MLX4_NET_TRANS_RULE_ID_UDP:
848 if (cur->tcp_udp.src_port)
849 len += snprintf(buf + len, BUF_SIZE - len,
850 "src-port = %d ",
851 be16_to_cpu(cur->tcp_udp.src_port));
852 if (cur->tcp_udp.dst_port)
853 len += snprintf(buf + len, BUF_SIZE - len,
854 "dst-port = %d ",
855 be16_to_cpu(cur->tcp_udp.dst_port));
856 break;
857
858 case MLX4_NET_TRANS_RULE_ID_IB:
859 len += snprintf(buf + len, BUF_SIZE - len,
860 "dst-gid = %pI6\n", cur->ib.dst_gid);
861 len += snprintf(buf + len, BUF_SIZE - len,
862 "dst-gid-mask = %pI6\n",
863 cur->ib.dst_gid_msk);
864 break;
865
866 case MLX4_NET_TRANS_RULE_ID_IPV6:
867 break;
868
869 default:
870 break;
871 }
872 }
873 len += snprintf(buf + len, BUF_SIZE - len, "\n");
874 mlx4_err(dev, "%s", buf);
875
876 if (len >= BUF_SIZE)
877 mlx4_err(dev, "Network rule error message was truncated, print buffer is too small.\n");
878 }
879
880 int mlx4_flow_attach(struct mlx4_dev *dev,
881 struct mlx4_net_trans_rule *rule, u64 *reg_id)
882 {
883 struct mlx4_cmd_mailbox *mailbox;
884 struct mlx4_spec_list *cur;
885 u32 size = 0;
886 int ret;
887
888 mailbox = mlx4_alloc_cmd_mailbox(dev);
889 if (IS_ERR(mailbox))
890 return PTR_ERR(mailbox);
891
892 trans_rule_ctrl_to_hw(rule, mailbox->buf);
893
894 size += sizeof(struct mlx4_net_trans_rule_hw_ctrl);
895
896 list_for_each_entry(cur, &rule->list, list) {
897 ret = parse_trans_rule(dev, cur, mailbox->buf + size);
898 if (ret < 0) {
899 mlx4_free_cmd_mailbox(dev, mailbox);
900 return -EINVAL;
901 }
902 size += ret;
903 }
904
905 ret = mlx4_QP_FLOW_STEERING_ATTACH(dev, mailbox, size >> 2, reg_id);
906 if (ret == -ENOMEM)
907 mlx4_err_rule(dev,
908 "mcg table is full. Fail to register network rule.\n",
909 rule);
910 else if (ret)
911 mlx4_err_rule(dev, "Fail to register network rule.\n", rule);
912
913 mlx4_free_cmd_mailbox(dev, mailbox);
914
915 return ret;
916 }
917 EXPORT_SYMBOL_GPL(mlx4_flow_attach);
918
919 int mlx4_flow_detach(struct mlx4_dev *dev, u64 reg_id)
920 {
921 int err;
922
923 err = mlx4_QP_FLOW_STEERING_DETACH(dev, reg_id);
924 if (err)
925 mlx4_err(dev, "Fail to detach network rule. registration id = 0x%llx\n",
926 reg_id);
927 return err;
928 }
929 EXPORT_SYMBOL_GPL(mlx4_flow_detach);
930
931 int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
932 int block_mcast_loopback, enum mlx4_protocol prot,
933 enum mlx4_steer_type steer)
934 {
935 struct mlx4_priv *priv = mlx4_priv(dev);
936 struct mlx4_cmd_mailbox *mailbox;
937 struct mlx4_mgm *mgm;
938 u32 members_count;
939 int index, prev;
940 int link = 0;
941 int i;
942 int err;
943 u8 port = gid[5];
944 u8 new_entry = 0;
945
946 mailbox = mlx4_alloc_cmd_mailbox(dev);
947 if (IS_ERR(mailbox))
948 return PTR_ERR(mailbox);
949 mgm = mailbox->buf;
950
951 mutex_lock(&priv->mcg_table.mutex);
952 err = find_entry(dev, port, gid, prot,
953 mailbox, &prev, &index);
954 if (err)
955 goto out;
956
957 if (index != -1) {
958 if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
959 new_entry = 1;
960 memcpy(mgm->gid, gid, 16);
961 }
962 } else {
963 link = 1;
964
965 index = mlx4_bitmap_alloc(&priv->mcg_table.bitmap);
966 if (index == -1) {
967 mlx4_err(dev, "No AMGM entries left\n");
968 err = -ENOMEM;
969 goto out;
970 }
971 index += dev->caps.num_mgms;
972
973 new_entry = 1;
974 memset(mgm, 0, sizeof *mgm);
975 memcpy(mgm->gid, gid, 16);
976 }
977
978 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
979 if (members_count == dev->caps.num_qp_per_mgm) {
980 mlx4_err(dev, "MGM at index %x is full.\n", index);
981 err = -ENOMEM;
982 goto out;
983 }
984
985 for (i = 0; i < members_count; ++i)
986 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
987 mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn);
988 err = 0;
989 goto out;
990 }
991
992 if (block_mcast_loopback)
993 mgm->qp[members_count++] = cpu_to_be32((qp->qpn & MGM_QPN_MASK) |
994 (1U << MGM_BLCK_LB_BIT));
995 else
996 mgm->qp[members_count++] = cpu_to_be32(qp->qpn & MGM_QPN_MASK);
997
998 mgm->members_count = cpu_to_be32(members_count | (u32) prot << 30);
999
1000 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1001 if (err)
1002 goto out;
1003
1004 if (!link)
1005 goto out;
1006
1007 err = mlx4_READ_ENTRY(dev, prev, mailbox);
1008 if (err)
1009 goto out;
1010
1011 mgm->next_gid_index = cpu_to_be32(index << 6);
1012
1013 err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
1014 if (err)
1015 goto out;
1016
1017 out:
1018 if (prot == MLX4_PROT_ETH) {
1019 /* manage the steering entry for promisc mode */
1020 if (new_entry)
1021 new_steering_entry(dev, port, steer, index, qp->qpn);
1022 else
1023 existing_steering_entry(dev, port, steer,
1024 index, qp->qpn);
1025 }
1026 if (err && link && index != -1) {
1027 if (index < dev->caps.num_mgms)
1028 mlx4_warn(dev, "Got AMGM index %d < %d",
1029 index, dev->caps.num_mgms);
1030 else
1031 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1032 index - dev->caps.num_mgms, MLX4_USE_RR);
1033 }
1034 mutex_unlock(&priv->mcg_table.mutex);
1035
1036 mlx4_free_cmd_mailbox(dev, mailbox);
1037 return err;
1038 }
1039
1040 int mlx4_qp_detach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1041 enum mlx4_protocol prot, enum mlx4_steer_type steer)
1042 {
1043 struct mlx4_priv *priv = mlx4_priv(dev);
1044 struct mlx4_cmd_mailbox *mailbox;
1045 struct mlx4_mgm *mgm;
1046 u32 members_count;
1047 int prev, index;
1048 int i, loc;
1049 int err;
1050 u8 port = gid[5];
1051 bool removed_entry = false;
1052
1053 mailbox = mlx4_alloc_cmd_mailbox(dev);
1054 if (IS_ERR(mailbox))
1055 return PTR_ERR(mailbox);
1056 mgm = mailbox->buf;
1057
1058 mutex_lock(&priv->mcg_table.mutex);
1059
1060 err = find_entry(dev, port, gid, prot,
1061 mailbox, &prev, &index);
1062 if (err)
1063 goto out;
1064
1065 if (index == -1) {
1066 mlx4_err(dev, "MGID %pI6 not found\n", gid);
1067 err = -EINVAL;
1068 goto out;
1069 }
1070
1071 /* if this pq is also a promisc qp, it shouldn't be removed */
1072 if (prot == MLX4_PROT_ETH &&
1073 check_duplicate_entry(dev, port, steer, index, qp->qpn))
1074 goto out;
1075
1076 members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
1077 for (loc = -1, i = 0; i < members_count; ++i)
1078 if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn)
1079 loc = i;
1080
1081 if (loc == -1) {
1082 mlx4_err(dev, "QP %06x not found in MGM\n", qp->qpn);
1083 err = -EINVAL;
1084 goto out;
1085 }
1086
1087
1088 mgm->members_count = cpu_to_be32(--members_count | (u32) prot << 30);
1089 mgm->qp[loc] = mgm->qp[i - 1];
1090 mgm->qp[i - 1] = 0;
1091
1092 if (prot == MLX4_PROT_ETH)
1093 removed_entry = can_remove_steering_entry(dev, port, steer,
1094 index, qp->qpn);
1095 if (i != 1 && (prot != MLX4_PROT_ETH || !removed_entry)) {
1096 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1097 goto out;
1098 }
1099
1100 /* We are going to delete the entry, members count should be 0 */
1101 mgm->members_count = cpu_to_be32((u32) prot << 30);
1102
1103 if (prev == -1) {
1104 /* Remove entry from MGM */
1105 int amgm_index = be32_to_cpu(mgm->next_gid_index) >> 6;
1106 if (amgm_index) {
1107 err = mlx4_READ_ENTRY(dev, amgm_index, mailbox);
1108 if (err)
1109 goto out;
1110 } else
1111 memset(mgm->gid, 0, 16);
1112
1113 err = mlx4_WRITE_ENTRY(dev, index, mailbox);
1114 if (err)
1115 goto out;
1116
1117 if (amgm_index) {
1118 if (amgm_index < dev->caps.num_mgms)
1119 mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d",
1120 index, amgm_index, dev->caps.num_mgms);
1121 else
1122 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1123 amgm_index - dev->caps.num_mgms, MLX4_USE_RR);
1124 }
1125 } else {
1126 /* Remove entry from AMGM */
1127 int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
1128 err = mlx4_READ_ENTRY(dev, prev, mailbox);
1129 if (err)
1130 goto out;
1131
1132 mgm->next_gid_index = cpu_to_be32(cur_next_index << 6);
1133
1134 err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
1135 if (err)
1136 goto out;
1137
1138 if (index < dev->caps.num_mgms)
1139 mlx4_warn(dev, "entry %d had next AMGM index %d < %d",
1140 prev, index, dev->caps.num_mgms);
1141 else
1142 mlx4_bitmap_free(&priv->mcg_table.bitmap,
1143 index - dev->caps.num_mgms, MLX4_USE_RR);
1144 }
1145
1146 out:
1147 mutex_unlock(&priv->mcg_table.mutex);
1148
1149 mlx4_free_cmd_mailbox(dev, mailbox);
1150 return err;
1151 }
1152
1153 static int mlx4_QP_ATTACH(struct mlx4_dev *dev, struct mlx4_qp *qp,
1154 u8 gid[16], u8 attach, u8 block_loopback,
1155 enum mlx4_protocol prot)
1156 {
1157 struct mlx4_cmd_mailbox *mailbox;
1158 int err = 0;
1159 int qpn;
1160
1161 if (!mlx4_is_mfunc(dev))
1162 return -EBADF;
1163
1164 mailbox = mlx4_alloc_cmd_mailbox(dev);
1165 if (IS_ERR(mailbox))
1166 return PTR_ERR(mailbox);
1167
1168 memcpy(mailbox->buf, gid, 16);
1169 qpn = qp->qpn;
1170 qpn |= (prot << 28);
1171 if (attach && block_loopback)
1172 qpn |= (1 << 31);
1173
1174 err = mlx4_cmd(dev, mailbox->dma, qpn, attach,
1175 MLX4_CMD_QP_ATTACH, MLX4_CMD_TIME_CLASS_A,
1176 MLX4_CMD_WRAPPED);
1177
1178 mlx4_free_cmd_mailbox(dev, mailbox);
1179 return err;
1180 }
1181
1182 int mlx4_trans_to_dmfs_attach(struct mlx4_dev *dev, struct mlx4_qp *qp,
1183 u8 gid[16], u8 port,
1184 int block_mcast_loopback,
1185 enum mlx4_protocol prot, u64 *reg_id)
1186 {
1187 struct mlx4_spec_list spec = { {NULL} };
1188 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
1189
1190 struct mlx4_net_trans_rule rule = {
1191 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
1192 .exclusive = 0,
1193 .promisc_mode = MLX4_FS_REGULAR,
1194 .priority = MLX4_DOMAIN_NIC,
1195 };
1196
1197 rule.allow_loopback = !block_mcast_loopback;
1198 rule.port = port;
1199 rule.qpn = qp->qpn;
1200 INIT_LIST_HEAD(&rule.list);
1201
1202 switch (prot) {
1203 case MLX4_PROT_ETH:
1204 spec.id = MLX4_NET_TRANS_RULE_ID_ETH;
1205 memcpy(spec.eth.dst_mac, &gid[10], ETH_ALEN);
1206 memcpy(spec.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
1207 break;
1208
1209 case MLX4_PROT_IB_IPV6:
1210 spec.id = MLX4_NET_TRANS_RULE_ID_IB;
1211 memcpy(spec.ib.dst_gid, gid, 16);
1212 memset(&spec.ib.dst_gid_msk, 0xff, 16);
1213 break;
1214 default:
1215 return -EINVAL;
1216 }
1217 list_add_tail(&spec.list, &rule.list);
1218
1219 return mlx4_flow_attach(dev, &rule, reg_id);
1220 }
1221
1222 int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1223 u8 port, int block_mcast_loopback,
1224 enum mlx4_protocol prot, u64 *reg_id)
1225 {
1226 switch (dev->caps.steering_mode) {
1227 case MLX4_STEERING_MODE_A0:
1228 if (prot == MLX4_PROT_ETH)
1229 return 0;
1230
1231 case MLX4_STEERING_MODE_B0:
1232 if (prot == MLX4_PROT_ETH)
1233 gid[7] |= (MLX4_MC_STEER << 1);
1234
1235 if (mlx4_is_mfunc(dev))
1236 return mlx4_QP_ATTACH(dev, qp, gid, 1,
1237 block_mcast_loopback, prot);
1238 return mlx4_qp_attach_common(dev, qp, gid,
1239 block_mcast_loopback, prot,
1240 MLX4_MC_STEER);
1241
1242 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1243 return mlx4_trans_to_dmfs_attach(dev, qp, gid, port,
1244 block_mcast_loopback,
1245 prot, reg_id);
1246 default:
1247 return -EINVAL;
1248 }
1249 }
1250 EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
1251
1252 int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
1253 enum mlx4_protocol prot, u64 reg_id)
1254 {
1255 switch (dev->caps.steering_mode) {
1256 case MLX4_STEERING_MODE_A0:
1257 if (prot == MLX4_PROT_ETH)
1258 return 0;
1259
1260 case MLX4_STEERING_MODE_B0:
1261 if (prot == MLX4_PROT_ETH)
1262 gid[7] |= (MLX4_MC_STEER << 1);
1263
1264 if (mlx4_is_mfunc(dev))
1265 return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
1266
1267 return mlx4_qp_detach_common(dev, qp, gid, prot,
1268 MLX4_MC_STEER);
1269
1270 case MLX4_STEERING_MODE_DEVICE_MANAGED:
1271 return mlx4_flow_detach(dev, reg_id);
1272
1273 default:
1274 return -EINVAL;
1275 }
1276 }
1277 EXPORT_SYMBOL_GPL(mlx4_multicast_detach);
1278
1279 int mlx4_flow_steer_promisc_add(struct mlx4_dev *dev, u8 port,
1280 u32 qpn, enum mlx4_net_trans_promisc_mode mode)
1281 {
1282 struct mlx4_net_trans_rule rule;
1283 u64 *regid_p;
1284
1285 switch (mode) {
1286 case MLX4_FS_ALL_DEFAULT:
1287 regid_p = &dev->regid_promisc_array[port];
1288 break;
1289 case MLX4_FS_MC_DEFAULT:
1290 regid_p = &dev->regid_allmulti_array[port];
1291 break;
1292 default:
1293 return -1;
1294 }
1295
1296 if (*regid_p != 0)
1297 return -1;
1298
1299 rule.promisc_mode = mode;
1300 rule.port = port;
1301 rule.qpn = qpn;
1302 INIT_LIST_HEAD(&rule.list);
1303 mlx4_err(dev, "going promisc on %x\n", port);
1304
1305 return mlx4_flow_attach(dev, &rule, regid_p);
1306 }
1307 EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_add);
1308
1309 int mlx4_flow_steer_promisc_remove(struct mlx4_dev *dev, u8 port,
1310 enum mlx4_net_trans_promisc_mode mode)
1311 {
1312 int ret;
1313 u64 *regid_p;
1314
1315 switch (mode) {
1316 case MLX4_FS_ALL_DEFAULT:
1317 regid_p = &dev->regid_promisc_array[port];
1318 break;
1319 case MLX4_FS_MC_DEFAULT:
1320 regid_p = &dev->regid_allmulti_array[port];
1321 break;
1322 default:
1323 return -1;
1324 }
1325
1326 if (*regid_p == 0)
1327 return -1;
1328
1329 ret = mlx4_flow_detach(dev, *regid_p);
1330 if (ret == 0)
1331 *regid_p = 0;
1332
1333 return ret;
1334 }
1335 EXPORT_SYMBOL_GPL(mlx4_flow_steer_promisc_remove);
1336
1337 int mlx4_unicast_attach(struct mlx4_dev *dev,
1338 struct mlx4_qp *qp, u8 gid[16],
1339 int block_mcast_loopback, enum mlx4_protocol prot)
1340 {
1341 if (prot == MLX4_PROT_ETH)
1342 gid[7] |= (MLX4_UC_STEER << 1);
1343
1344 if (mlx4_is_mfunc(dev))
1345 return mlx4_QP_ATTACH(dev, qp, gid, 1,
1346 block_mcast_loopback, prot);
1347
1348 return mlx4_qp_attach_common(dev, qp, gid, block_mcast_loopback,
1349 prot, MLX4_UC_STEER);
1350 }
1351 EXPORT_SYMBOL_GPL(mlx4_unicast_attach);
1352
1353 int mlx4_unicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp,
1354 u8 gid[16], enum mlx4_protocol prot)
1355 {
1356 if (prot == MLX4_PROT_ETH)
1357 gid[7] |= (MLX4_UC_STEER << 1);
1358
1359 if (mlx4_is_mfunc(dev))
1360 return mlx4_QP_ATTACH(dev, qp, gid, 0, 0, prot);
1361
1362 return mlx4_qp_detach_common(dev, qp, gid, prot, MLX4_UC_STEER);
1363 }
1364 EXPORT_SYMBOL_GPL(mlx4_unicast_detach);
1365
1366 int mlx4_PROMISC_wrapper(struct mlx4_dev *dev, int slave,
1367 struct mlx4_vhcr *vhcr,
1368 struct mlx4_cmd_mailbox *inbox,
1369 struct mlx4_cmd_mailbox *outbox,
1370 struct mlx4_cmd_info *cmd)
1371 {
1372 u32 qpn = (u32) vhcr->in_param & 0xffffffff;
1373 u8 port = vhcr->in_param >> 62;
1374 enum mlx4_steer_type steer = vhcr->in_modifier;
1375
1376 /* Promiscuous unicast is not allowed in mfunc */
1377 if (mlx4_is_mfunc(dev) && steer == MLX4_UC_STEER)
1378 return 0;
1379
1380 if (vhcr->op_modifier)
1381 return add_promisc_qp(dev, port, steer, qpn);
1382 else
1383 return remove_promisc_qp(dev, port, steer, qpn);
1384 }
1385
1386 static int mlx4_PROMISC(struct mlx4_dev *dev, u32 qpn,
1387 enum mlx4_steer_type steer, u8 add, u8 port)
1388 {
1389 return mlx4_cmd(dev, (u64) qpn | (u64) port << 62, (u32) steer, add,
1390 MLX4_CMD_PROMISC, MLX4_CMD_TIME_CLASS_A,
1391 MLX4_CMD_WRAPPED);
1392 }
1393
1394 int mlx4_multicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1395 {
1396 if (mlx4_is_mfunc(dev))
1397 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 1, port);
1398
1399 return add_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
1400 }
1401 EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_add);
1402
1403 int mlx4_multicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1404 {
1405 if (mlx4_is_mfunc(dev))
1406 return mlx4_PROMISC(dev, qpn, MLX4_MC_STEER, 0, port);
1407
1408 return remove_promisc_qp(dev, port, MLX4_MC_STEER, qpn);
1409 }
1410 EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_remove);
1411
1412 int mlx4_unicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
1413 {
1414 if (mlx4_is_mfunc(dev))
1415 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 1, port);
1416
1417 return add_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
1418 }
1419 EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_add);
1420
1421 int mlx4_unicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
1422 {
1423 if (mlx4_is_mfunc(dev))
1424 return mlx4_PROMISC(dev, qpn, MLX4_UC_STEER, 0, port);
1425
1426 return remove_promisc_qp(dev, port, MLX4_UC_STEER, qpn);
1427 }
1428 EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_remove);
1429
1430 int mlx4_init_mcg_table(struct mlx4_dev *dev)
1431 {
1432 struct mlx4_priv *priv = mlx4_priv(dev);
1433 int err;
1434
1435 /* No need for mcg_table when fw managed the mcg table*/
1436 if (dev->caps.steering_mode ==
1437 MLX4_STEERING_MODE_DEVICE_MANAGED)
1438 return 0;
1439 err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms,
1440 dev->caps.num_amgms - 1, 0, 0);
1441 if (err)
1442 return err;
1443
1444 mutex_init(&priv->mcg_table.mutex);
1445
1446 return 0;
1447 }
1448
1449 void mlx4_cleanup_mcg_table(struct mlx4_dev *dev)
1450 {
1451 if (dev->caps.steering_mode !=
1452 MLX4_STEERING_MODE_DEVICE_MANAGED)
1453 mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap);
1454 }
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