2 * drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
3 * Copyright (c) 2017 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2017 Jiri Pirko <jiri@mellanox.com>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the names of the copyright holders nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
18 * Alternatively, this software may be distributed under the terms of the
19 * GNU General Public License ("GPL") version 2 as published by the Free
20 * Software Foundation.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
35 #include <linux/kernel.h>
36 #include <linux/slab.h>
37 #include <linux/errno.h>
38 #include <linux/bitops.h>
39 #include <linux/list.h>
40 #include <linux/rhashtable.h>
41 #include <linux/netdevice.h>
42 #include <linux/parman.h>
46 #include "resources.h"
48 #include "core_acl_flex_keys.h"
50 struct mlxsw_sp_acl_tcam {
51 unsigned long *used_regions; /* bit array */
52 unsigned int max_regions;
53 unsigned long *used_groups; /* bit array */
54 unsigned int max_groups;
55 unsigned int max_group_size;
58 static int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp, void *priv)
60 struct mlxsw_sp_acl_tcam *tcam = priv;
67 max_tcam_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core,
68 ACL_MAX_TCAM_REGIONS);
69 max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS);
71 /* Use 1:1 mapping between ACL region and TCAM region */
72 if (max_tcam_regions < max_regions)
73 max_regions = max_tcam_regions;
75 alloc_size = sizeof(tcam->used_regions[0]) * BITS_TO_LONGS(max_regions);
76 tcam->used_regions = kzalloc(alloc_size, GFP_KERNEL);
77 if (!tcam->used_regions)
79 tcam->max_regions = max_regions;
81 max_groups = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUPS);
82 alloc_size = sizeof(tcam->used_groups[0]) * BITS_TO_LONGS(max_groups);
83 tcam->used_groups = kzalloc(alloc_size, GFP_KERNEL);
84 if (!tcam->used_groups) {
86 goto err_alloc_used_groups;
88 tcam->max_groups = max_groups;
89 tcam->max_group_size = MLXSW_CORE_RES_GET(mlxsw_sp->core,
93 err_alloc_used_groups:
94 kfree(tcam->used_regions);
98 static void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp, void *priv)
100 struct mlxsw_sp_acl_tcam *tcam = priv;
102 kfree(tcam->used_groups);
103 kfree(tcam->used_regions);
106 static int mlxsw_sp_acl_tcam_region_id_get(struct mlxsw_sp_acl_tcam *tcam,
111 id = find_first_zero_bit(tcam->used_regions, tcam->max_regions);
112 if (id < tcam->max_regions) {
113 __set_bit(id, tcam->used_regions);
120 static void mlxsw_sp_acl_tcam_region_id_put(struct mlxsw_sp_acl_tcam *tcam,
123 __clear_bit(id, tcam->used_regions);
126 static int mlxsw_sp_acl_tcam_group_id_get(struct mlxsw_sp_acl_tcam *tcam,
131 id = find_first_zero_bit(tcam->used_groups, tcam->max_groups);
132 if (id < tcam->max_groups) {
133 __set_bit(id, tcam->used_groups);
140 static void mlxsw_sp_acl_tcam_group_id_put(struct mlxsw_sp_acl_tcam *tcam,
143 __clear_bit(id, tcam->used_groups);
146 struct mlxsw_sp_acl_tcam_pattern {
147 const enum mlxsw_afk_element *elements;
148 unsigned int elements_count;
151 struct mlxsw_sp_acl_tcam_group {
152 struct mlxsw_sp_acl_tcam *tcam;
154 struct list_head region_list;
155 unsigned int region_count;
156 struct rhashtable chunk_ht;
161 struct mlxsw_sp_acl_tcam_group_ops *ops;
162 const struct mlxsw_sp_acl_tcam_pattern *patterns;
163 unsigned int patterns_count;
166 struct mlxsw_sp_acl_tcam_region {
167 struct list_head list; /* Member of a TCAM group */
168 struct list_head chunk_list; /* List of chunks under this region */
169 struct parman *parman;
170 struct mlxsw_sp *mlxsw_sp;
171 struct mlxsw_sp_acl_tcam_group *group;
172 u16 id; /* ACL ID and region ID - they are same */
173 char tcam_region_info[MLXSW_REG_PXXX_TCAM_REGION_INFO_LEN];
174 struct mlxsw_afk_key_info *key_info;
176 struct parman_prio parman_prio;
177 struct parman_item parman_item;
178 struct mlxsw_sp_acl_rule_info *rulei;
182 struct mlxsw_sp_acl_tcam_chunk {
183 struct list_head list; /* Member of a TCAM region */
184 struct rhash_head ht_node; /* Member of a chunk HT */
185 unsigned int priority; /* Priority within the region and group */
186 struct parman_prio parman_prio;
187 struct mlxsw_sp_acl_tcam_group *group;
188 struct mlxsw_sp_acl_tcam_region *region;
189 unsigned int ref_count;
192 struct mlxsw_sp_acl_tcam_entry {
193 struct parman_item parman_item;
194 struct mlxsw_sp_acl_tcam_chunk *chunk;
197 static const struct rhashtable_params mlxsw_sp_acl_tcam_chunk_ht_params = {
198 .key_len = sizeof(unsigned int),
199 .key_offset = offsetof(struct mlxsw_sp_acl_tcam_chunk, priority),
200 .head_offset = offsetof(struct mlxsw_sp_acl_tcam_chunk, ht_node),
201 .automatic_shrinking = true,
204 static int mlxsw_sp_acl_tcam_group_update(struct mlxsw_sp *mlxsw_sp,
205 struct mlxsw_sp_acl_tcam_group *group)
207 struct mlxsw_sp_acl_tcam_region *region;
208 char pagt_pl[MLXSW_REG_PAGT_LEN];
211 mlxsw_reg_pagt_pack(pagt_pl, group->id);
212 list_for_each_entry(region, &group->region_list, list)
213 mlxsw_reg_pagt_acl_id_pack(pagt_pl, acl_index++, region->id);
214 mlxsw_reg_pagt_size_set(pagt_pl, acl_index);
215 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pagt), pagt_pl);
219 mlxsw_sp_acl_tcam_group_add(struct mlxsw_sp *mlxsw_sp,
220 struct mlxsw_sp_acl_tcam *tcam,
221 struct mlxsw_sp_acl_tcam_group *group,
222 const struct mlxsw_sp_acl_tcam_pattern *patterns,
223 unsigned int patterns_count)
228 group->patterns = patterns;
229 group->patterns_count = patterns_count;
230 INIT_LIST_HEAD(&group->region_list);
231 err = mlxsw_sp_acl_tcam_group_id_get(tcam, &group->id);
235 err = mlxsw_sp_acl_tcam_group_update(mlxsw_sp, group);
237 goto err_group_update;
239 err = rhashtable_init(&group->chunk_ht,
240 &mlxsw_sp_acl_tcam_chunk_ht_params);
242 goto err_rhashtable_init;
248 mlxsw_sp_acl_tcam_group_id_put(tcam, group->id);
252 static void mlxsw_sp_acl_tcam_group_del(struct mlxsw_sp *mlxsw_sp,
253 struct mlxsw_sp_acl_tcam_group *group)
255 struct mlxsw_sp_acl_tcam *tcam = group->tcam;
257 rhashtable_destroy(&group->chunk_ht);
258 mlxsw_sp_acl_tcam_group_id_put(tcam, group->id);
259 WARN_ON(!list_empty(&group->region_list));
263 mlxsw_sp_acl_tcam_group_bind(struct mlxsw_sp *mlxsw_sp,
264 struct mlxsw_sp_acl_tcam_group *group,
265 struct net_device *dev, bool ingress)
267 struct mlxsw_sp_port *mlxsw_sp_port;
268 char ppbt_pl[MLXSW_REG_PPBT_LEN];
270 if (!mlxsw_sp_port_dev_check(dev))
273 mlxsw_sp_port = netdev_priv(dev);
274 group->bound.local_port = mlxsw_sp_port->local_port;
275 group->bound.ingress = ingress;
276 mlxsw_reg_ppbt_pack(ppbt_pl,
277 group->bound.ingress ? MLXSW_REG_PXBT_E_IACL :
278 MLXSW_REG_PXBT_E_EACL,
279 MLXSW_REG_PXBT_OP_BIND, group->bound.local_port,
281 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppbt), ppbt_pl);
285 mlxsw_sp_acl_tcam_group_unbind(struct mlxsw_sp *mlxsw_sp,
286 struct mlxsw_sp_acl_tcam_group *group)
288 char ppbt_pl[MLXSW_REG_PPBT_LEN];
290 mlxsw_reg_ppbt_pack(ppbt_pl,
291 group->bound.ingress ? MLXSW_REG_PXBT_E_IACL :
292 MLXSW_REG_PXBT_E_EACL,
293 MLXSW_REG_PXBT_OP_UNBIND, group->bound.local_port,
295 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppbt), ppbt_pl);
299 mlxsw_sp_acl_tcam_region_prio(struct mlxsw_sp_acl_tcam_region *region)
301 struct mlxsw_sp_acl_tcam_chunk *chunk;
303 if (list_empty(®ion->chunk_list))
305 /* As a priority of a region, return priority of the first chunk */
306 chunk = list_first_entry(®ion->chunk_list, typeof(*chunk), list);
307 return chunk->priority;
311 mlxsw_sp_acl_tcam_region_max_prio(struct mlxsw_sp_acl_tcam_region *region)
313 struct mlxsw_sp_acl_tcam_chunk *chunk;
315 if (list_empty(®ion->chunk_list))
317 chunk = list_last_entry(®ion->chunk_list, typeof(*chunk), list);
318 return chunk->priority;
322 mlxsw_sp_acl_tcam_group_list_add(struct mlxsw_sp_acl_tcam_group *group,
323 struct mlxsw_sp_acl_tcam_region *region)
325 struct mlxsw_sp_acl_tcam_region *region2;
326 struct list_head *pos;
328 /* Position the region inside the list according to priority */
329 list_for_each(pos, &group->region_list) {
330 region2 = list_entry(pos, typeof(*region2), list);
331 if (mlxsw_sp_acl_tcam_region_prio(region2) >
332 mlxsw_sp_acl_tcam_region_prio(region))
335 list_add_tail(®ion->list, pos);
336 group->region_count++;
340 mlxsw_sp_acl_tcam_group_list_del(struct mlxsw_sp_acl_tcam_group *group,
341 struct mlxsw_sp_acl_tcam_region *region)
343 group->region_count--;
344 list_del(®ion->list);
348 mlxsw_sp_acl_tcam_group_region_attach(struct mlxsw_sp *mlxsw_sp,
349 struct mlxsw_sp_acl_tcam_group *group,
350 struct mlxsw_sp_acl_tcam_region *region)
354 if (group->region_count == group->tcam->max_group_size)
357 mlxsw_sp_acl_tcam_group_list_add(group, region);
359 err = mlxsw_sp_acl_tcam_group_update(mlxsw_sp, group);
361 goto err_group_update;
362 region->group = group;
367 mlxsw_sp_acl_tcam_group_list_del(group, region);
368 mlxsw_sp_acl_tcam_group_update(mlxsw_sp, group);
373 mlxsw_sp_acl_tcam_group_region_detach(struct mlxsw_sp *mlxsw_sp,
374 struct mlxsw_sp_acl_tcam_region *region)
376 struct mlxsw_sp_acl_tcam_group *group = region->group;
378 mlxsw_sp_acl_tcam_group_list_del(group, region);
379 mlxsw_sp_acl_tcam_group_update(mlxsw_sp, group);
382 static struct mlxsw_sp_acl_tcam_region *
383 mlxsw_sp_acl_tcam_group_region_find(struct mlxsw_sp_acl_tcam_group *group,
384 unsigned int priority,
385 struct mlxsw_afk_element_usage *elusage,
388 struct mlxsw_sp_acl_tcam_region *region, *region2;
389 struct list_head *pos;
392 list_for_each(pos, &group->region_list) {
393 region = list_entry(pos, typeof(*region), list);
395 /* First, check if the requested priority does not rather belong
396 * under some of the next regions.
398 if (pos->next != &group->region_list) { /* not last */
399 region2 = list_entry(pos->next, typeof(*region2), list);
400 if (priority >= mlxsw_sp_acl_tcam_region_prio(region2))
404 issubset = mlxsw_afk_key_info_subset(region->key_info, elusage);
406 /* If requested element usage would not fit and the priority
407 * is lower than the currently inspected region we cannot
408 * use this region, so return NULL to indicate new region has
412 priority < mlxsw_sp_acl_tcam_region_prio(region))
415 /* If requested element usage would not fit and the priority
416 * is higher than the currently inspected region we cannot
417 * use this region. There is still some hope that the next
418 * region would be the fit. So let it be processed and
419 * eventually break at the check right above this.
422 priority > mlxsw_sp_acl_tcam_region_max_prio(region))
425 /* Indicate if the region needs to be split in order to add
426 * the requested priority. Split is needed when requested
427 * element usage won't fit into the found region.
429 *p_need_split = !issubset;
432 return NULL; /* New region has to be created. */
436 mlxsw_sp_acl_tcam_group_use_patterns(struct mlxsw_sp_acl_tcam_group *group,
437 struct mlxsw_afk_element_usage *elusage,
438 struct mlxsw_afk_element_usage *out)
440 const struct mlxsw_sp_acl_tcam_pattern *pattern;
443 for (i = 0; i < group->patterns_count; i++) {
444 pattern = &group->patterns[i];
445 mlxsw_afk_element_usage_fill(out, pattern->elements,
446 pattern->elements_count);
447 if (mlxsw_afk_element_usage_subset(elusage, out))
450 memcpy(out, elusage, sizeof(*out));
453 #define MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT 16
454 #define MLXSW_SP_ACL_TCAM_REGION_RESIZE_STEP 16
457 mlxsw_sp_acl_tcam_region_alloc(struct mlxsw_sp *mlxsw_sp,
458 struct mlxsw_sp_acl_tcam_region *region)
460 struct mlxsw_afk_key_info *key_info = region->key_info;
461 char ptar_pl[MLXSW_REG_PTAR_LEN];
462 unsigned int encodings_count;
466 mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_ALLOC,
467 MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT,
468 region->id, region->tcam_region_info);
469 encodings_count = mlxsw_afk_key_info_blocks_count_get(key_info);
470 for (i = 0; i < encodings_count; i++) {
473 encoding = mlxsw_afk_key_info_block_encoding_get(key_info, i);
474 mlxsw_reg_ptar_key_id_pack(ptar_pl, i, encoding);
476 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl);
479 mlxsw_reg_ptar_unpack(ptar_pl, region->tcam_region_info);
484 mlxsw_sp_acl_tcam_region_free(struct mlxsw_sp *mlxsw_sp,
485 struct mlxsw_sp_acl_tcam_region *region)
487 char ptar_pl[MLXSW_REG_PTAR_LEN];
489 mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_FREE, 0, region->id,
490 region->tcam_region_info);
491 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl);
495 mlxsw_sp_acl_tcam_region_resize(struct mlxsw_sp *mlxsw_sp,
496 struct mlxsw_sp_acl_tcam_region *region,
499 char ptar_pl[MLXSW_REG_PTAR_LEN];
501 mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_RESIZE,
502 new_size, region->id, region->tcam_region_info);
503 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl);
507 mlxsw_sp_acl_tcam_region_enable(struct mlxsw_sp *mlxsw_sp,
508 struct mlxsw_sp_acl_tcam_region *region)
510 char pacl_pl[MLXSW_REG_PACL_LEN];
512 mlxsw_reg_pacl_pack(pacl_pl, region->id, true,
513 region->tcam_region_info);
514 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pacl), pacl_pl);
518 mlxsw_sp_acl_tcam_region_disable(struct mlxsw_sp *mlxsw_sp,
519 struct mlxsw_sp_acl_tcam_region *region)
521 char pacl_pl[MLXSW_REG_PACL_LEN];
523 mlxsw_reg_pacl_pack(pacl_pl, region->id, false,
524 region->tcam_region_info);
525 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pacl), pacl_pl);
529 mlxsw_sp_acl_tcam_region_entry_insert(struct mlxsw_sp *mlxsw_sp,
530 struct mlxsw_sp_acl_tcam_region *region,
532 struct mlxsw_sp_acl_rule_info *rulei)
534 char ptce2_pl[MLXSW_REG_PTCE2_LEN];
539 mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_WRITE_WRITE,
540 region->tcam_region_info, offset);
541 key = mlxsw_reg_ptce2_flex_key_blocks_data(ptce2_pl);
542 mask = mlxsw_reg_ptce2_mask_data(ptce2_pl);
543 mlxsw_afk_encode(region->key_info, &rulei->values, key, mask);
545 /* Only the first action set belongs here, the rest is in KVD */
546 act_set = mlxsw_afa_block_first_set(rulei->act_block);
547 mlxsw_reg_ptce2_flex_action_set_memcpy_to(ptce2_pl, act_set);
549 return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
553 mlxsw_sp_acl_tcam_region_entry_remove(struct mlxsw_sp *mlxsw_sp,
554 struct mlxsw_sp_acl_tcam_region *region,
557 char ptce2_pl[MLXSW_REG_PTCE2_LEN];
559 mlxsw_reg_ptce2_pack(ptce2_pl, false, MLXSW_REG_PTCE2_OP_WRITE_WRITE,
560 region->tcam_region_info, offset);
561 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl);
564 #define MLXSW_SP_ACL_TCAM_CATCHALL_PRIO (~0U)
567 mlxsw_sp_acl_tcam_region_catchall_add(struct mlxsw_sp *mlxsw_sp,
568 struct mlxsw_sp_acl_tcam_region *region)
570 struct parman_prio *parman_prio = ®ion->catchall.parman_prio;
571 struct parman_item *parman_item = ®ion->catchall.parman_item;
572 struct mlxsw_sp_acl_rule_info *rulei;
575 parman_prio_init(region->parman, parman_prio,
576 MLXSW_SP_ACL_TCAM_CATCHALL_PRIO);
577 err = parman_item_add(region->parman, parman_prio, parman_item);
579 goto err_parman_item_add;
581 rulei = mlxsw_sp_acl_rulei_create(mlxsw_sp->acl);
583 err = PTR_ERR(rulei);
584 goto err_rulei_create;
587 mlxsw_sp_acl_rulei_act_continue(rulei);
588 err = mlxsw_sp_acl_rulei_commit(rulei);
590 goto err_rulei_commit;
592 err = mlxsw_sp_acl_tcam_region_entry_insert(mlxsw_sp, region,
593 parman_item->index, rulei);
594 region->catchall.rulei = rulei;
596 goto err_rule_insert;
602 mlxsw_sp_acl_rulei_destroy(rulei);
604 parman_item_remove(region->parman, parman_prio, parman_item);
606 parman_prio_fini(parman_prio);
611 mlxsw_sp_acl_tcam_region_catchall_del(struct mlxsw_sp *mlxsw_sp,
612 struct mlxsw_sp_acl_tcam_region *region)
614 struct parman_prio *parman_prio = ®ion->catchall.parman_prio;
615 struct parman_item *parman_item = ®ion->catchall.parman_item;
616 struct mlxsw_sp_acl_rule_info *rulei = region->catchall.rulei;
618 mlxsw_sp_acl_tcam_region_entry_remove(mlxsw_sp, region,
620 mlxsw_sp_acl_rulei_destroy(rulei);
621 parman_item_remove(region->parman, parman_prio, parman_item);
622 parman_prio_fini(parman_prio);
626 mlxsw_sp_acl_tcam_region_move(struct mlxsw_sp *mlxsw_sp,
627 struct mlxsw_sp_acl_tcam_region *region,
628 u16 src_offset, u16 dst_offset, u16 size)
630 char prcr_pl[MLXSW_REG_PRCR_LEN];
632 mlxsw_reg_prcr_pack(prcr_pl, MLXSW_REG_PRCR_OP_MOVE,
633 region->tcam_region_info, src_offset,
634 region->tcam_region_info, dst_offset, size);
635 mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(prcr), prcr_pl);
638 static int mlxsw_sp_acl_tcam_region_parman_resize(void *priv,
639 unsigned long new_count)
641 struct mlxsw_sp_acl_tcam_region *region = priv;
642 struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp;
645 max_tcam_rules = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_TCAM_RULES);
646 if (new_count > max_tcam_rules)
648 return mlxsw_sp_acl_tcam_region_resize(mlxsw_sp, region, new_count);
651 static void mlxsw_sp_acl_tcam_region_parman_move(void *priv,
652 unsigned long from_index,
653 unsigned long to_index,
656 struct mlxsw_sp_acl_tcam_region *region = priv;
657 struct mlxsw_sp *mlxsw_sp = region->mlxsw_sp;
659 mlxsw_sp_acl_tcam_region_move(mlxsw_sp, region,
660 from_index, to_index, count);
663 static const struct parman_ops mlxsw_sp_acl_tcam_region_parman_ops = {
664 .base_count = MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT,
665 .resize_step = MLXSW_SP_ACL_TCAM_REGION_RESIZE_STEP,
666 .resize = mlxsw_sp_acl_tcam_region_parman_resize,
667 .move = mlxsw_sp_acl_tcam_region_parman_move,
668 .algo = PARMAN_ALGO_TYPE_LSORT,
671 static struct mlxsw_sp_acl_tcam_region *
672 mlxsw_sp_acl_tcam_region_create(struct mlxsw_sp *mlxsw_sp,
673 struct mlxsw_sp_acl_tcam *tcam,
674 struct mlxsw_afk_element_usage *elusage)
676 struct mlxsw_afk *afk = mlxsw_sp_acl_afk(mlxsw_sp->acl);
677 struct mlxsw_sp_acl_tcam_region *region;
680 region = kzalloc(sizeof(*region), GFP_KERNEL);
682 return ERR_PTR(-ENOMEM);
683 INIT_LIST_HEAD(®ion->chunk_list);
684 region->mlxsw_sp = mlxsw_sp;
686 region->parman = parman_create(&mlxsw_sp_acl_tcam_region_parman_ops,
688 if (!region->parman) {
690 goto err_parman_create;
693 region->key_info = mlxsw_afk_key_info_get(afk, elusage);
694 if (IS_ERR(region->key_info)) {
695 err = PTR_ERR(region->key_info);
696 goto err_key_info_get;
699 err = mlxsw_sp_acl_tcam_region_id_get(tcam, ®ion->id);
701 goto err_region_id_get;
703 err = mlxsw_sp_acl_tcam_region_alloc(mlxsw_sp, region);
705 goto err_tcam_region_alloc;
707 err = mlxsw_sp_acl_tcam_region_enable(mlxsw_sp, region);
709 goto err_tcam_region_enable;
711 err = mlxsw_sp_acl_tcam_region_catchall_add(mlxsw_sp, region);
713 goto err_tcam_region_catchall_add;
717 err_tcam_region_catchall_add:
718 mlxsw_sp_acl_tcam_region_disable(mlxsw_sp, region);
719 err_tcam_region_enable:
720 mlxsw_sp_acl_tcam_region_free(mlxsw_sp, region);
721 err_tcam_region_alloc:
722 mlxsw_sp_acl_tcam_region_id_put(tcam, region->id);
724 mlxsw_afk_key_info_put(region->key_info);
726 parman_destroy(region->parman);
733 mlxsw_sp_acl_tcam_region_destroy(struct mlxsw_sp *mlxsw_sp,
734 struct mlxsw_sp_acl_tcam_region *region)
736 mlxsw_sp_acl_tcam_region_catchall_del(mlxsw_sp, region);
737 mlxsw_sp_acl_tcam_region_disable(mlxsw_sp, region);
738 mlxsw_sp_acl_tcam_region_free(mlxsw_sp, region);
739 mlxsw_sp_acl_tcam_region_id_put(region->group->tcam, region->id);
740 mlxsw_afk_key_info_put(region->key_info);
741 parman_destroy(region->parman);
746 mlxsw_sp_acl_tcam_chunk_assoc(struct mlxsw_sp *mlxsw_sp,
747 struct mlxsw_sp_acl_tcam_group *group,
748 unsigned int priority,
749 struct mlxsw_afk_element_usage *elusage,
750 struct mlxsw_sp_acl_tcam_chunk *chunk)
752 struct mlxsw_sp_acl_tcam_region *region;
753 bool region_created = false;
757 region = mlxsw_sp_acl_tcam_group_region_find(group, priority, elusage,
759 if (region && need_split) {
760 /* According to priority, the chunk should belong to an
761 * existing region. However, this chunk needs elements
762 * that region does not contain. We need to split the existing
763 * region into two and create a new region for this chunk
764 * in between. This is not supported now.
769 struct mlxsw_afk_element_usage region_elusage;
771 mlxsw_sp_acl_tcam_group_use_patterns(group, elusage,
773 region = mlxsw_sp_acl_tcam_region_create(mlxsw_sp, group->tcam,
776 return PTR_ERR(region);
777 region_created = true;
780 chunk->region = region;
781 list_add_tail(&chunk->list, ®ion->chunk_list);
786 err = mlxsw_sp_acl_tcam_group_region_attach(mlxsw_sp, group, region);
788 goto err_group_region_attach;
792 err_group_region_attach:
793 mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, region);
798 mlxsw_sp_acl_tcam_chunk_deassoc(struct mlxsw_sp *mlxsw_sp,
799 struct mlxsw_sp_acl_tcam_chunk *chunk)
801 struct mlxsw_sp_acl_tcam_region *region = chunk->region;
803 list_del(&chunk->list);
804 if (list_empty(®ion->chunk_list)) {
805 mlxsw_sp_acl_tcam_group_region_detach(mlxsw_sp, region);
806 mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, region);
810 static struct mlxsw_sp_acl_tcam_chunk *
811 mlxsw_sp_acl_tcam_chunk_create(struct mlxsw_sp *mlxsw_sp,
812 struct mlxsw_sp_acl_tcam_group *group,
813 unsigned int priority,
814 struct mlxsw_afk_element_usage *elusage)
816 struct mlxsw_sp_acl_tcam_chunk *chunk;
819 if (priority == MLXSW_SP_ACL_TCAM_CATCHALL_PRIO)
820 return ERR_PTR(-EINVAL);
822 chunk = kzalloc(sizeof(*chunk), GFP_KERNEL);
824 return ERR_PTR(-ENOMEM);
825 chunk->priority = priority;
826 chunk->group = group;
827 chunk->ref_count = 1;
829 err = mlxsw_sp_acl_tcam_chunk_assoc(mlxsw_sp, group, priority,
832 goto err_chunk_assoc;
834 parman_prio_init(chunk->region->parman, &chunk->parman_prio, priority);
836 err = rhashtable_insert_fast(&group->chunk_ht, &chunk->ht_node,
837 mlxsw_sp_acl_tcam_chunk_ht_params);
839 goto err_rhashtable_insert;
843 err_rhashtable_insert:
844 parman_prio_fini(&chunk->parman_prio);
845 mlxsw_sp_acl_tcam_chunk_deassoc(mlxsw_sp, chunk);
852 mlxsw_sp_acl_tcam_chunk_destroy(struct mlxsw_sp *mlxsw_sp,
853 struct mlxsw_sp_acl_tcam_chunk *chunk)
855 struct mlxsw_sp_acl_tcam_group *group = chunk->group;
857 rhashtable_remove_fast(&group->chunk_ht, &chunk->ht_node,
858 mlxsw_sp_acl_tcam_chunk_ht_params);
859 parman_prio_fini(&chunk->parman_prio);
860 mlxsw_sp_acl_tcam_chunk_deassoc(mlxsw_sp, chunk);
864 static struct mlxsw_sp_acl_tcam_chunk *
865 mlxsw_sp_acl_tcam_chunk_get(struct mlxsw_sp *mlxsw_sp,
866 struct mlxsw_sp_acl_tcam_group *group,
867 unsigned int priority,
868 struct mlxsw_afk_element_usage *elusage)
870 struct mlxsw_sp_acl_tcam_chunk *chunk;
872 chunk = rhashtable_lookup_fast(&group->chunk_ht, &priority,
873 mlxsw_sp_acl_tcam_chunk_ht_params);
875 if (WARN_ON(!mlxsw_afk_key_info_subset(chunk->region->key_info,
877 return ERR_PTR(-EINVAL);
881 return mlxsw_sp_acl_tcam_chunk_create(mlxsw_sp, group,
885 static void mlxsw_sp_acl_tcam_chunk_put(struct mlxsw_sp *mlxsw_sp,
886 struct mlxsw_sp_acl_tcam_chunk *chunk)
888 if (--chunk->ref_count)
890 mlxsw_sp_acl_tcam_chunk_destroy(mlxsw_sp, chunk);
893 static int mlxsw_sp_acl_tcam_entry_add(struct mlxsw_sp *mlxsw_sp,
894 struct mlxsw_sp_acl_tcam_group *group,
895 struct mlxsw_sp_acl_tcam_entry *entry,
896 struct mlxsw_sp_acl_rule_info *rulei)
898 struct mlxsw_sp_acl_tcam_chunk *chunk;
899 struct mlxsw_sp_acl_tcam_region *region;
902 chunk = mlxsw_sp_acl_tcam_chunk_get(mlxsw_sp, group, rulei->priority,
903 &rulei->values.elusage);
905 return PTR_ERR(chunk);
907 region = chunk->region;
908 err = parman_item_add(region->parman, &chunk->parman_prio,
909 &entry->parman_item);
911 goto err_parman_item_add;
913 err = mlxsw_sp_acl_tcam_region_entry_insert(mlxsw_sp, region,
914 entry->parman_item.index,
917 goto err_rule_insert;
918 entry->chunk = chunk;
923 parman_item_remove(region->parman, &chunk->parman_prio,
924 &entry->parman_item);
926 mlxsw_sp_acl_tcam_chunk_put(mlxsw_sp, chunk);
930 static void mlxsw_sp_acl_tcam_entry_del(struct mlxsw_sp *mlxsw_sp,
931 struct mlxsw_sp_acl_tcam_entry *entry)
933 struct mlxsw_sp_acl_tcam_chunk *chunk = entry->chunk;
934 struct mlxsw_sp_acl_tcam_region *region = chunk->region;
936 mlxsw_sp_acl_tcam_region_entry_remove(mlxsw_sp, region,
937 entry->parman_item.index);
938 parman_item_remove(region->parman, &chunk->parman_prio,
939 &entry->parman_item);
940 mlxsw_sp_acl_tcam_chunk_put(mlxsw_sp, chunk);
943 static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv4[] = {
944 MLXSW_AFK_ELEMENT_SRC_SYS_PORT,
945 MLXSW_AFK_ELEMENT_DMAC,
946 MLXSW_AFK_ELEMENT_SMAC,
947 MLXSW_AFK_ELEMENT_ETHERTYPE,
948 MLXSW_AFK_ELEMENT_IP_PROTO,
949 MLXSW_AFK_ELEMENT_SRC_IP4,
950 MLXSW_AFK_ELEMENT_DST_IP4,
951 MLXSW_AFK_ELEMENT_DST_L4_PORT,
952 MLXSW_AFK_ELEMENT_SRC_L4_PORT,
955 static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv6[] = {
956 MLXSW_AFK_ELEMENT_ETHERTYPE,
957 MLXSW_AFK_ELEMENT_IP_PROTO,
958 MLXSW_AFK_ELEMENT_SRC_IP6_HI,
959 MLXSW_AFK_ELEMENT_SRC_IP6_LO,
960 MLXSW_AFK_ELEMENT_DST_IP6_HI,
961 MLXSW_AFK_ELEMENT_DST_IP6_LO,
962 MLXSW_AFK_ELEMENT_DST_L4_PORT,
963 MLXSW_AFK_ELEMENT_SRC_L4_PORT,
966 static const struct mlxsw_sp_acl_tcam_pattern mlxsw_sp_acl_tcam_patterns[] = {
968 .elements = mlxsw_sp_acl_tcam_pattern_ipv4,
969 .elements_count = ARRAY_SIZE(mlxsw_sp_acl_tcam_pattern_ipv4),
972 .elements = mlxsw_sp_acl_tcam_pattern_ipv6,
973 .elements_count = ARRAY_SIZE(mlxsw_sp_acl_tcam_pattern_ipv6),
977 #define MLXSW_SP_ACL_TCAM_PATTERNS_COUNT \
978 ARRAY_SIZE(mlxsw_sp_acl_tcam_patterns)
980 struct mlxsw_sp_acl_tcam_flower_ruleset {
981 struct mlxsw_sp_acl_tcam_group group;
984 struct mlxsw_sp_acl_tcam_flower_rule {
985 struct mlxsw_sp_acl_tcam_entry entry;
989 mlxsw_sp_acl_tcam_flower_ruleset_add(struct mlxsw_sp *mlxsw_sp,
990 void *priv, void *ruleset_priv)
992 struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;
993 struct mlxsw_sp_acl_tcam *tcam = priv;
995 return mlxsw_sp_acl_tcam_group_add(mlxsw_sp, tcam, &ruleset->group,
996 mlxsw_sp_acl_tcam_patterns,
997 MLXSW_SP_ACL_TCAM_PATTERNS_COUNT);
1001 mlxsw_sp_acl_tcam_flower_ruleset_del(struct mlxsw_sp *mlxsw_sp,
1004 struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;
1006 mlxsw_sp_acl_tcam_group_del(mlxsw_sp, &ruleset->group);
1010 mlxsw_sp_acl_tcam_flower_ruleset_bind(struct mlxsw_sp *mlxsw_sp,
1012 struct net_device *dev, bool ingress)
1014 struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;
1016 return mlxsw_sp_acl_tcam_group_bind(mlxsw_sp, &ruleset->group,
1021 mlxsw_sp_acl_tcam_flower_ruleset_unbind(struct mlxsw_sp *mlxsw_sp,
1024 struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;
1026 mlxsw_sp_acl_tcam_group_unbind(mlxsw_sp, &ruleset->group);
1030 mlxsw_sp_acl_tcam_flower_rule_add(struct mlxsw_sp *mlxsw_sp,
1031 void *ruleset_priv, void *rule_priv,
1032 struct mlxsw_sp_acl_rule_info *rulei)
1034 struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;
1035 struct mlxsw_sp_acl_tcam_flower_rule *rule = rule_priv;
1037 return mlxsw_sp_acl_tcam_entry_add(mlxsw_sp, &ruleset->group,
1038 &rule->entry, rulei);
1042 mlxsw_sp_acl_tcam_flower_rule_del(struct mlxsw_sp *mlxsw_sp, void *rule_priv)
1044 struct mlxsw_sp_acl_tcam_flower_rule *rule = rule_priv;
1046 mlxsw_sp_acl_tcam_entry_del(mlxsw_sp, &rule->entry);
1049 static const struct mlxsw_sp_acl_profile_ops mlxsw_sp_acl_tcam_flower_ops = {
1050 .ruleset_priv_size = sizeof(struct mlxsw_sp_acl_tcam_flower_ruleset),
1051 .ruleset_add = mlxsw_sp_acl_tcam_flower_ruleset_add,
1052 .ruleset_del = mlxsw_sp_acl_tcam_flower_ruleset_del,
1053 .ruleset_bind = mlxsw_sp_acl_tcam_flower_ruleset_bind,
1054 .ruleset_unbind = mlxsw_sp_acl_tcam_flower_ruleset_unbind,
1055 .rule_priv_size = sizeof(struct mlxsw_sp_acl_tcam_flower_rule),
1056 .rule_add = mlxsw_sp_acl_tcam_flower_rule_add,
1057 .rule_del = mlxsw_sp_acl_tcam_flower_rule_del,
1060 static const struct mlxsw_sp_acl_profile_ops *
1061 mlxsw_sp_acl_tcam_profile_ops_arr[] = {
1062 [MLXSW_SP_ACL_PROFILE_FLOWER] = &mlxsw_sp_acl_tcam_flower_ops,
1065 static const struct mlxsw_sp_acl_profile_ops *
1066 mlxsw_sp_acl_tcam_profile_ops(struct mlxsw_sp *mlxsw_sp,
1067 enum mlxsw_sp_acl_profile profile)
1069 const struct mlxsw_sp_acl_profile_ops *ops;
1071 if (WARN_ON(profile >= ARRAY_SIZE(mlxsw_sp_acl_tcam_profile_ops_arr)))
1073 ops = mlxsw_sp_acl_tcam_profile_ops_arr[profile];
1079 const struct mlxsw_sp_acl_ops mlxsw_sp_acl_tcam_ops = {
1080 .priv_size = sizeof(struct mlxsw_sp_acl_tcam),
1081 .init = mlxsw_sp_acl_tcam_init,
1082 .fini = mlxsw_sp_acl_tcam_fini,
1083 .profile_ops = mlxsw_sp_acl_tcam_profile_ops,