2 * Copyright (c) 2015, Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/mutex.h>
34 #include <linux/mlx5/driver.h>
36 #include "mlx5_core.h"
40 #define INIT_TREE_NODE_ARRAY_SIZE(...) (sizeof((struct init_tree_node[]){__VA_ARGS__}) /\
41 sizeof(struct init_tree_node))
43 #define ADD_PRIO(num_prios_val, min_level_val, num_levels_val, caps_val,\
44 ...) {.type = FS_TYPE_PRIO,\
45 .min_ft_level = min_level_val,\
46 .num_levels = num_levels_val,\
47 .num_leaf_prios = num_prios_val,\
49 .children = (struct init_tree_node[]) {__VA_ARGS__},\
50 .ar_size = INIT_TREE_NODE_ARRAY_SIZE(__VA_ARGS__) \
53 #define ADD_MULTIPLE_PRIO(num_prios_val, num_levels_val, ...)\
54 ADD_PRIO(num_prios_val, 0, num_levels_val, {},\
57 #define ADD_NS(...) {.type = FS_TYPE_NAMESPACE,\
58 .children = (struct init_tree_node[]) {__VA_ARGS__},\
59 .ar_size = INIT_TREE_NODE_ARRAY_SIZE(__VA_ARGS__) \
62 #define INIT_CAPS_ARRAY_SIZE(...) (sizeof((long[]){__VA_ARGS__}) /\
65 #define FS_CAP(cap) (__mlx5_bit_off(flow_table_nic_cap, cap))
67 #define FS_REQUIRED_CAPS(...) {.arr_sz = INIT_CAPS_ARRAY_SIZE(__VA_ARGS__), \
68 .caps = (long[]) {__VA_ARGS__} }
70 #define FS_CHAINING_CAPS FS_REQUIRED_CAPS(FS_CAP(flow_table_properties_nic_receive.flow_modify_en), \
71 FS_CAP(flow_table_properties_nic_receive.modify_root), \
72 FS_CAP(flow_table_properties_nic_receive.identified_miss_table_mode), \
73 FS_CAP(flow_table_properties_nic_receive.flow_table_modify))
75 #define LEFTOVERS_NUM_LEVELS 1
76 #define LEFTOVERS_NUM_PRIOS 1
78 #define BY_PASS_PRIO_NUM_LEVELS 1
79 #define BY_PASS_MIN_LEVEL (ETHTOOL_MIN_LEVEL + MLX5_BY_PASS_NUM_PRIOS +\
82 #define ETHTOOL_PRIO_NUM_LEVELS 1
83 #define ETHTOOL_NUM_PRIOS 10
84 #define ETHTOOL_MIN_LEVEL (KERNEL_MIN_LEVEL + ETHTOOL_NUM_PRIOS)
85 /* Vlan, mac, ttc, aRFS */
86 #define KERNEL_NIC_PRIO_NUM_LEVELS 4
87 #define KERNEL_NIC_NUM_PRIOS 1
88 /* One more level for tc */
89 #define KERNEL_MIN_LEVEL (KERNEL_NIC_PRIO_NUM_LEVELS + 1)
91 #define ANCHOR_NUM_LEVELS 1
92 #define ANCHOR_NUM_PRIOS 1
93 #define ANCHOR_MIN_LEVEL (BY_PASS_MIN_LEVEL + 1)
95 #define OFFLOADS_MAX_FT 1
96 #define OFFLOADS_NUM_PRIOS 1
97 #define OFFLOADS_MIN_LEVEL (ANCHOR_MIN_LEVEL + 1)
99 #define LAG_PRIO_NUM_LEVELS 1
100 #define LAG_NUM_PRIOS 1
101 #define LAG_MIN_LEVEL (OFFLOADS_MIN_LEVEL + 1)
107 static struct init_tree_node {
108 enum fs_node_type type;
109 struct init_tree_node *children;
111 struct node_caps caps;
117 .type = FS_TYPE_NAMESPACE,
119 .children = (struct init_tree_node[]) {
120 ADD_PRIO(0, BY_PASS_MIN_LEVEL, 0,
122 ADD_NS(ADD_MULTIPLE_PRIO(MLX5_BY_PASS_NUM_PRIOS,
123 BY_PASS_PRIO_NUM_LEVELS))),
124 ADD_PRIO(0, LAG_MIN_LEVEL, 0,
126 ADD_NS(ADD_MULTIPLE_PRIO(LAG_NUM_PRIOS,
127 LAG_PRIO_NUM_LEVELS))),
128 ADD_PRIO(0, OFFLOADS_MIN_LEVEL, 0, {},
129 ADD_NS(ADD_MULTIPLE_PRIO(OFFLOADS_NUM_PRIOS, OFFLOADS_MAX_FT))),
130 ADD_PRIO(0, ETHTOOL_MIN_LEVEL, 0,
132 ADD_NS(ADD_MULTIPLE_PRIO(ETHTOOL_NUM_PRIOS,
133 ETHTOOL_PRIO_NUM_LEVELS))),
134 ADD_PRIO(0, KERNEL_MIN_LEVEL, 0, {},
135 ADD_NS(ADD_MULTIPLE_PRIO(1, 1),
136 ADD_MULTIPLE_PRIO(KERNEL_NIC_NUM_PRIOS,
137 KERNEL_NIC_PRIO_NUM_LEVELS))),
138 ADD_PRIO(0, BY_PASS_MIN_LEVEL, 0,
140 ADD_NS(ADD_MULTIPLE_PRIO(LEFTOVERS_NUM_PRIOS, LEFTOVERS_NUM_LEVELS))),
141 ADD_PRIO(0, ANCHOR_MIN_LEVEL, 0, {},
142 ADD_NS(ADD_MULTIPLE_PRIO(ANCHOR_NUM_PRIOS, ANCHOR_NUM_LEVELS))),
146 enum fs_i_mutex_lock_class {
147 FS_MUTEX_GRANDPARENT,
152 static void del_rule(struct fs_node *node);
153 static void del_flow_table(struct fs_node *node);
154 static void del_flow_group(struct fs_node *node);
155 static void del_fte(struct fs_node *node);
157 static void tree_init_node(struct fs_node *node,
158 unsigned int refcount,
159 void (*remove_func)(struct fs_node *))
161 atomic_set(&node->refcount, refcount);
162 INIT_LIST_HEAD(&node->list);
163 INIT_LIST_HEAD(&node->children);
164 mutex_init(&node->lock);
165 node->remove_func = remove_func;
168 static void tree_add_node(struct fs_node *node, struct fs_node *parent)
171 atomic_inc(&parent->refcount);
172 node->parent = parent;
174 /* Parent is the root */
178 node->root = parent->root;
181 static void tree_get_node(struct fs_node *node)
183 atomic_inc(&node->refcount);
186 static void nested_lock_ref_node(struct fs_node *node,
187 enum fs_i_mutex_lock_class class)
190 mutex_lock_nested(&node->lock, class);
191 atomic_inc(&node->refcount);
195 static void lock_ref_node(struct fs_node *node)
198 mutex_lock(&node->lock);
199 atomic_inc(&node->refcount);
203 static void unlock_ref_node(struct fs_node *node)
206 atomic_dec(&node->refcount);
207 mutex_unlock(&node->lock);
211 static void tree_put_node(struct fs_node *node)
213 struct fs_node *parent_node = node->parent;
215 lock_ref_node(parent_node);
216 if (atomic_dec_and_test(&node->refcount)) {
218 list_del_init(&node->list);
219 if (node->remove_func)
220 node->remove_func(node);
224 unlock_ref_node(parent_node);
225 if (!node && parent_node)
226 tree_put_node(parent_node);
229 static int tree_remove_node(struct fs_node *node)
231 if (atomic_read(&node->refcount) > 1) {
232 atomic_dec(&node->refcount);
239 static struct fs_prio *find_prio(struct mlx5_flow_namespace *ns,
242 struct fs_prio *iter_prio;
244 fs_for_each_prio(iter_prio, ns) {
245 if (iter_prio->prio == prio)
252 static bool masked_memcmp(void *mask, void *val1, void *val2, size_t size)
256 for (i = 0; i < size; i++, mask++, val1++, val2++)
257 if ((*((u8 *)val1) & (*(u8 *)mask)) !=
258 ((*(u8 *)val2) & (*(u8 *)mask)))
264 static bool compare_match_value(struct mlx5_flow_group_mask *mask,
265 void *fte_param1, void *fte_param2)
267 if (mask->match_criteria_enable &
268 1 << MLX5_CREATE_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_OUTER_HEADERS) {
269 void *fte_match1 = MLX5_ADDR_OF(fte_match_param,
270 fte_param1, outer_headers);
271 void *fte_match2 = MLX5_ADDR_OF(fte_match_param,
272 fte_param2, outer_headers);
273 void *fte_mask = MLX5_ADDR_OF(fte_match_param,
274 mask->match_criteria, outer_headers);
276 if (!masked_memcmp(fte_mask, fte_match1, fte_match2,
277 MLX5_ST_SZ_BYTES(fte_match_set_lyr_2_4)))
281 if (mask->match_criteria_enable &
282 1 << MLX5_CREATE_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_MISC_PARAMETERS) {
283 void *fte_match1 = MLX5_ADDR_OF(fte_match_param,
284 fte_param1, misc_parameters);
285 void *fte_match2 = MLX5_ADDR_OF(fte_match_param,
286 fte_param2, misc_parameters);
287 void *fte_mask = MLX5_ADDR_OF(fte_match_param,
288 mask->match_criteria, misc_parameters);
290 if (!masked_memcmp(fte_mask, fte_match1, fte_match2,
291 MLX5_ST_SZ_BYTES(fte_match_set_misc)))
295 if (mask->match_criteria_enable &
296 1 << MLX5_CREATE_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_INNER_HEADERS) {
297 void *fte_match1 = MLX5_ADDR_OF(fte_match_param,
298 fte_param1, inner_headers);
299 void *fte_match2 = MLX5_ADDR_OF(fte_match_param,
300 fte_param2, inner_headers);
301 void *fte_mask = MLX5_ADDR_OF(fte_match_param,
302 mask->match_criteria, inner_headers);
304 if (!masked_memcmp(fte_mask, fte_match1, fte_match2,
305 MLX5_ST_SZ_BYTES(fte_match_set_lyr_2_4)))
311 static bool compare_match_criteria(u8 match_criteria_enable1,
312 u8 match_criteria_enable2,
313 void *mask1, void *mask2)
315 return match_criteria_enable1 == match_criteria_enable2 &&
316 !memcmp(mask1, mask2, MLX5_ST_SZ_BYTES(fte_match_param));
319 static struct mlx5_flow_root_namespace *find_root(struct fs_node *node)
321 struct fs_node *root;
322 struct mlx5_flow_namespace *ns;
326 if (WARN_ON(root->type != FS_TYPE_NAMESPACE)) {
327 pr_warn("mlx5: flow steering node is not in tree or garbaged\n");
331 ns = container_of(root, struct mlx5_flow_namespace, node);
332 return container_of(ns, struct mlx5_flow_root_namespace, ns);
335 static inline struct mlx5_core_dev *get_dev(struct fs_node *node)
337 struct mlx5_flow_root_namespace *root = find_root(node);
344 static void del_flow_table(struct fs_node *node)
346 struct mlx5_flow_table *ft;
347 struct mlx5_core_dev *dev;
348 struct fs_prio *prio;
351 fs_get_obj(ft, node);
352 dev = get_dev(&ft->node);
354 err = mlx5_cmd_destroy_flow_table(dev, ft);
356 mlx5_core_warn(dev, "flow steering can't destroy ft\n");
357 fs_get_obj(prio, ft->node.parent);
361 static void del_rule(struct fs_node *node)
363 struct mlx5_flow_rule *rule;
364 struct mlx5_flow_table *ft;
365 struct mlx5_flow_group *fg;
369 struct mlx5_core_dev *dev = get_dev(node);
370 int match_len = MLX5_ST_SZ_BYTES(fte_match_param);
373 match_value = mlx5_vzalloc(match_len);
375 mlx5_core_warn(dev, "failed to allocate inbox\n");
379 fs_get_obj(rule, node);
380 fs_get_obj(fte, rule->node.parent);
381 fs_get_obj(fg, fte->node.parent);
382 memcpy(match_value, fte->val, sizeof(fte->val));
383 fs_get_obj(ft, fg->node.parent);
384 list_del(&rule->node.list);
385 if (rule->sw_action == MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO) {
386 mutex_lock(&rule->dest_attr.ft->lock);
387 list_del(&rule->next_ft);
388 mutex_unlock(&rule->dest_attr.ft->lock);
390 if ((fte->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) &&
392 modify_mask = BIT(MLX5_SET_FTE_MODIFY_ENABLE_MASK_DESTINATION_LIST),
393 err = mlx5_cmd_update_fte(dev, ft,
399 "%s can't del rule fg id=%d fte_index=%d\n",
400 __func__, fg->id, fte->index);
405 static void del_fte(struct fs_node *node)
407 struct mlx5_flow_table *ft;
408 struct mlx5_flow_group *fg;
409 struct mlx5_core_dev *dev;
413 fs_get_obj(fte, node);
414 fs_get_obj(fg, fte->node.parent);
415 fs_get_obj(ft, fg->node.parent);
417 dev = get_dev(&ft->node);
418 err = mlx5_cmd_delete_fte(dev, ft,
422 "flow steering can't delete fte in index %d of flow group id %d\n",
429 static void del_flow_group(struct fs_node *node)
431 struct mlx5_flow_group *fg;
432 struct mlx5_flow_table *ft;
433 struct mlx5_core_dev *dev;
435 fs_get_obj(fg, node);
436 fs_get_obj(ft, fg->node.parent);
437 dev = get_dev(&ft->node);
439 if (mlx5_cmd_destroy_flow_group(dev, ft, fg->id))
440 mlx5_core_warn(dev, "flow steering can't destroy fg %d of ft %d\n",
444 static struct fs_fte *alloc_fte(u8 action,
451 fte = kzalloc(sizeof(*fte), GFP_KERNEL);
453 return ERR_PTR(-ENOMEM);
455 memcpy(fte->val, match_value, sizeof(fte->val));
456 fte->node.type = FS_TYPE_FLOW_ENTRY;
457 fte->flow_tag = flow_tag;
459 fte->action = action;
464 static struct mlx5_flow_group *alloc_flow_group(u32 *create_fg_in)
466 struct mlx5_flow_group *fg;
467 void *match_criteria = MLX5_ADDR_OF(create_flow_group_in,
468 create_fg_in, match_criteria);
469 u8 match_criteria_enable = MLX5_GET(create_flow_group_in,
471 match_criteria_enable);
472 fg = kzalloc(sizeof(*fg), GFP_KERNEL);
474 return ERR_PTR(-ENOMEM);
476 fg->mask.match_criteria_enable = match_criteria_enable;
477 memcpy(&fg->mask.match_criteria, match_criteria,
478 sizeof(fg->mask.match_criteria));
479 fg->node.type = FS_TYPE_FLOW_GROUP;
480 fg->start_index = MLX5_GET(create_flow_group_in, create_fg_in,
482 fg->max_ftes = MLX5_GET(create_flow_group_in, create_fg_in,
483 end_flow_index) - fg->start_index + 1;
487 static struct mlx5_flow_table *alloc_flow_table(int level, u16 vport, int max_fte,
488 enum fs_flow_table_type table_type,
489 enum fs_flow_table_op_mod op_mod)
491 struct mlx5_flow_table *ft;
493 ft = kzalloc(sizeof(*ft), GFP_KERNEL);
498 ft->node.type = FS_TYPE_FLOW_TABLE;
500 ft->type = table_type;
502 ft->max_fte = max_fte;
503 INIT_LIST_HEAD(&ft->fwd_rules);
504 mutex_init(&ft->lock);
509 /* If reverse is false, then we search for the first flow table in the
510 * root sub-tree from start(closest from right), else we search for the
511 * last flow table in the root sub-tree till start(closest from left).
513 static struct mlx5_flow_table *find_closest_ft_recursive(struct fs_node *root,
514 struct list_head *start,
517 #define list_advance_entry(pos, reverse) \
518 ((reverse) ? list_prev_entry(pos, list) : list_next_entry(pos, list))
520 #define list_for_each_advance_continue(pos, head, reverse) \
521 for (pos = list_advance_entry(pos, reverse); \
522 &pos->list != (head); \
523 pos = list_advance_entry(pos, reverse))
525 struct fs_node *iter = list_entry(start, struct fs_node, list);
526 struct mlx5_flow_table *ft = NULL;
531 list_for_each_advance_continue(iter, &root->children, reverse) {
532 if (iter->type == FS_TYPE_FLOW_TABLE) {
533 fs_get_obj(ft, iter);
536 ft = find_closest_ft_recursive(iter, &iter->children, reverse);
544 /* If reverse if false then return the first flow table in next priority of
545 * prio in the tree, else return the last flow table in the previous priority
546 * of prio in the tree.
548 static struct mlx5_flow_table *find_closest_ft(struct fs_prio *prio, bool reverse)
550 struct mlx5_flow_table *ft = NULL;
551 struct fs_node *curr_node;
552 struct fs_node *parent;
554 parent = prio->node.parent;
555 curr_node = &prio->node;
556 while (!ft && parent) {
557 ft = find_closest_ft_recursive(parent, &curr_node->list, reverse);
559 parent = curr_node->parent;
564 /* Assuming all the tree is locked by mutex chain lock */
565 static struct mlx5_flow_table *find_next_chained_ft(struct fs_prio *prio)
567 return find_closest_ft(prio, false);
570 /* Assuming all the tree is locked by mutex chain lock */
571 static struct mlx5_flow_table *find_prev_chained_ft(struct fs_prio *prio)
573 return find_closest_ft(prio, true);
576 static int connect_fts_in_prio(struct mlx5_core_dev *dev,
577 struct fs_prio *prio,
578 struct mlx5_flow_table *ft)
580 struct mlx5_flow_table *iter;
584 fs_for_each_ft(iter, prio) {
586 err = mlx5_cmd_modify_flow_table(dev,
590 mlx5_core_warn(dev, "Failed to modify flow table %d\n",
592 /* The driver is out of sync with the FW */
601 /* Connect flow tables from previous priority of prio to ft */
602 static int connect_prev_fts(struct mlx5_core_dev *dev,
603 struct mlx5_flow_table *ft,
604 struct fs_prio *prio)
606 struct mlx5_flow_table *prev_ft;
608 prev_ft = find_prev_chained_ft(prio);
610 struct fs_prio *prev_prio;
612 fs_get_obj(prev_prio, prev_ft->node.parent);
613 return connect_fts_in_prio(dev, prev_prio, ft);
618 static int update_root_ft_create(struct mlx5_flow_table *ft, struct fs_prio
621 struct mlx5_flow_root_namespace *root = find_root(&prio->node);
622 int min_level = INT_MAX;
626 min_level = root->root_ft->level;
628 if (ft->level >= min_level)
631 err = mlx5_cmd_update_root_ft(root->dev, ft);
633 mlx5_core_warn(root->dev, "Update root flow table of id=%u failed\n",
641 int mlx5_modify_rule_destination(struct mlx5_flow_rule *rule,
642 struct mlx5_flow_destination *dest)
644 struct mlx5_flow_table *ft;
645 struct mlx5_flow_group *fg;
647 int modify_mask = BIT(MLX5_SET_FTE_MODIFY_ENABLE_MASK_DESTINATION_LIST);
650 fs_get_obj(fte, rule->node.parent);
651 if (!(fte->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST))
653 lock_ref_node(&fte->node);
654 fs_get_obj(fg, fte->node.parent);
655 fs_get_obj(ft, fg->node.parent);
657 memcpy(&rule->dest_attr, dest, sizeof(*dest));
658 err = mlx5_cmd_update_fte(get_dev(&ft->node),
662 unlock_ref_node(&fte->node);
667 /* Modify/set FWD rules that point on old_next_ft to point on new_next_ft */
668 static int connect_fwd_rules(struct mlx5_core_dev *dev,
669 struct mlx5_flow_table *new_next_ft,
670 struct mlx5_flow_table *old_next_ft)
672 struct mlx5_flow_destination dest;
673 struct mlx5_flow_rule *iter;
676 /* new_next_ft and old_next_ft could be NULL only
677 * when we create/destroy the anchor flow table.
679 if (!new_next_ft || !old_next_ft)
682 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
683 dest.ft = new_next_ft;
685 mutex_lock(&old_next_ft->lock);
686 list_splice_init(&old_next_ft->fwd_rules, &new_next_ft->fwd_rules);
687 mutex_unlock(&old_next_ft->lock);
688 list_for_each_entry(iter, &new_next_ft->fwd_rules, next_ft) {
689 err = mlx5_modify_rule_destination(iter, &dest);
691 pr_err("mlx5_core: failed to modify rule to point on flow table %d\n",
697 static int connect_flow_table(struct mlx5_core_dev *dev, struct mlx5_flow_table *ft,
698 struct fs_prio *prio)
700 struct mlx5_flow_table *next_ft;
703 /* Connect_prev_fts and update_root_ft_create are mutually exclusive */
705 if (list_empty(&prio->node.children)) {
706 err = connect_prev_fts(dev, ft, prio);
710 next_ft = find_next_chained_ft(prio);
711 err = connect_fwd_rules(dev, ft, next_ft);
716 if (MLX5_CAP_FLOWTABLE(dev,
717 flow_table_properties_nic_receive.modify_root))
718 err = update_root_ft_create(ft, prio);
722 static void list_add_flow_table(struct mlx5_flow_table *ft,
723 struct fs_prio *prio)
725 struct list_head *prev = &prio->node.children;
726 struct mlx5_flow_table *iter;
728 fs_for_each_ft(iter, prio) {
729 if (iter->level > ft->level)
731 prev = &iter->node.list;
733 list_add(&ft->node.list, prev);
736 static struct mlx5_flow_table *__mlx5_create_flow_table(struct mlx5_flow_namespace *ns,
737 enum fs_flow_table_op_mod op_mod,
739 int max_fte, u32 level)
741 struct mlx5_flow_table *next_ft = NULL;
742 struct mlx5_flow_table *ft;
745 struct mlx5_flow_root_namespace *root =
746 find_root(&ns->node);
747 struct fs_prio *fs_prio = NULL;
750 pr_err("mlx5: flow steering failed to find root of namespace\n");
751 return ERR_PTR(-ENODEV);
754 mutex_lock(&root->chain_lock);
755 fs_prio = find_prio(ns, prio);
760 if (level >= fs_prio->num_levels) {
764 /* The level is related to the
765 * priority level range.
767 level += fs_prio->start_level;
768 ft = alloc_flow_table(level,
770 max_fte ? roundup_pow_of_two(max_fte) : 0,
778 tree_init_node(&ft->node, 1, del_flow_table);
779 log_table_sz = ft->max_fte ? ilog2(ft->max_fte) : 0;
780 next_ft = find_next_chained_ft(fs_prio);
781 err = mlx5_cmd_create_flow_table(root->dev, ft->vport, ft->op_mod, ft->type,
782 ft->level, log_table_sz, next_ft, &ft->id);
786 err = connect_flow_table(root->dev, ft, fs_prio);
789 lock_ref_node(&fs_prio->node);
790 tree_add_node(&ft->node, &fs_prio->node);
791 list_add_flow_table(ft, fs_prio);
793 unlock_ref_node(&fs_prio->node);
794 mutex_unlock(&root->chain_lock);
797 mlx5_cmd_destroy_flow_table(root->dev, ft);
801 mutex_unlock(&root->chain_lock);
805 struct mlx5_flow_table *mlx5_create_flow_table(struct mlx5_flow_namespace *ns,
806 int prio, int max_fte,
809 return __mlx5_create_flow_table(ns, FS_FT_OP_MOD_NORMAL, 0, prio,
813 struct mlx5_flow_table *mlx5_create_vport_flow_table(struct mlx5_flow_namespace *ns,
814 int prio, int max_fte,
815 u32 level, u16 vport)
817 return __mlx5_create_flow_table(ns, FS_FT_OP_MOD_NORMAL, vport, prio,
821 struct mlx5_flow_table *mlx5_create_lag_demux_flow_table(
822 struct mlx5_flow_namespace *ns,
825 return __mlx5_create_flow_table(ns, FS_FT_OP_MOD_LAG_DEMUX, 0, prio, 0,
828 EXPORT_SYMBOL(mlx5_create_lag_demux_flow_table);
830 struct mlx5_flow_table *mlx5_create_auto_grouped_flow_table(struct mlx5_flow_namespace *ns,
832 int num_flow_table_entries,
836 struct mlx5_flow_table *ft;
838 if (max_num_groups > num_flow_table_entries)
839 return ERR_PTR(-EINVAL);
841 ft = mlx5_create_flow_table(ns, prio, num_flow_table_entries, level);
845 ft->autogroup.active = true;
846 ft->autogroup.required_groups = max_num_groups;
850 EXPORT_SYMBOL(mlx5_create_auto_grouped_flow_table);
852 /* Flow table should be locked */
853 static struct mlx5_flow_group *create_flow_group_common(struct mlx5_flow_table *ft,
859 struct mlx5_flow_group *fg;
860 struct mlx5_core_dev *dev = get_dev(&ft->node);
864 return ERR_PTR(-ENODEV);
866 fg = alloc_flow_group(fg_in);
870 err = mlx5_cmd_create_flow_group(dev, ft, fg_in, &fg->id);
876 if (ft->autogroup.active)
877 ft->autogroup.num_groups++;
878 /* Add node to tree */
879 tree_init_node(&fg->node, !is_auto_fg, del_flow_group);
880 tree_add_node(&fg->node, &ft->node);
881 /* Add node to group list */
882 list_add(&fg->node.list, ft->node.children.prev);
887 struct mlx5_flow_group *mlx5_create_flow_group(struct mlx5_flow_table *ft,
890 struct mlx5_flow_group *fg;
892 if (ft->autogroup.active)
893 return ERR_PTR(-EPERM);
895 lock_ref_node(&ft->node);
896 fg = create_flow_group_common(ft, fg_in, &ft->node.children, false);
897 unlock_ref_node(&ft->node);
902 static struct mlx5_flow_rule *alloc_rule(struct mlx5_flow_destination *dest)
904 struct mlx5_flow_rule *rule;
906 rule = kzalloc(sizeof(*rule), GFP_KERNEL);
910 INIT_LIST_HEAD(&rule->next_ft);
911 rule->node.type = FS_TYPE_FLOW_DEST;
913 memcpy(&rule->dest_attr, dest, sizeof(*dest));
918 /* fte should not be deleted while calling this function */
919 static struct mlx5_flow_rule *add_rule_fte(struct fs_fte *fte,
920 struct mlx5_flow_group *fg,
921 struct mlx5_flow_destination *dest)
923 struct mlx5_flow_table *ft;
924 struct mlx5_flow_rule *rule;
928 rule = alloc_rule(dest);
930 return ERR_PTR(-ENOMEM);
932 fs_get_obj(ft, fg->node.parent);
933 /* Add dest to dests list- we need flow tables to be in the
934 * end of the list for forward to next prio rules.
936 tree_init_node(&rule->node, 1, del_rule);
937 if (dest && dest->type != MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE)
938 list_add(&rule->node.list, &fte->node.children);
940 list_add_tail(&rule->node.list, &fte->node.children);
944 modify_mask |= dest->type == MLX5_FLOW_DESTINATION_TYPE_COUNTER ?
945 BIT(MLX5_SET_FTE_MODIFY_ENABLE_MASK_FLOW_COUNTERS) :
946 BIT(MLX5_SET_FTE_MODIFY_ENABLE_MASK_DESTINATION_LIST);
949 if (fte->dests_size == 1 || !dest)
950 err = mlx5_cmd_create_fte(get_dev(&ft->node),
953 err = mlx5_cmd_update_fte(get_dev(&ft->node),
954 ft, fg->id, modify_mask, fte);
958 fte->status |= FS_FTE_STATUS_EXISTING;
963 list_del(&rule->node.list);
970 /* Assumed fg is locked */
971 static unsigned int get_free_fte_index(struct mlx5_flow_group *fg,
972 struct list_head **prev)
975 unsigned int start = fg->start_index;
978 *prev = &fg->node.children;
980 /* assumed list is sorted by index */
981 fs_for_each_fte(fte, fg) {
982 if (fte->index != start)
986 *prev = &fte->node.list;
992 /* prev is output, prev->next = new_fte */
993 static struct fs_fte *create_fte(struct mlx5_flow_group *fg,
997 struct list_head **prev)
1002 index = get_free_fte_index(fg, prev);
1003 fte = alloc_fte(action, flow_tag, match_value, index);
1010 static struct mlx5_flow_group *create_autogroup(struct mlx5_flow_table *ft,
1011 u8 match_criteria_enable,
1012 u32 *match_criteria)
1014 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
1015 struct list_head *prev = &ft->node.children;
1016 unsigned int candidate_index = 0;
1017 struct mlx5_flow_group *fg;
1018 void *match_criteria_addr;
1019 unsigned int group_size = 0;
1022 if (!ft->autogroup.active)
1023 return ERR_PTR(-ENOENT);
1025 in = mlx5_vzalloc(inlen);
1027 return ERR_PTR(-ENOMEM);
1029 if (ft->autogroup.num_groups < ft->autogroup.required_groups)
1030 /* We save place for flow groups in addition to max types */
1031 group_size = ft->max_fte / (ft->autogroup.required_groups + 1);
1033 /* ft->max_fte == ft->autogroup.max_types */
1034 if (group_size == 0)
1037 /* sorted by start_index */
1038 fs_for_each_fg(fg, ft) {
1039 if (candidate_index + group_size > fg->start_index)
1040 candidate_index = fg->start_index + fg->max_ftes;
1043 prev = &fg->node.list;
1046 if (candidate_index + group_size > ft->max_fte) {
1047 fg = ERR_PTR(-ENOSPC);
1051 MLX5_SET(create_flow_group_in, in, match_criteria_enable,
1052 match_criteria_enable);
1053 MLX5_SET(create_flow_group_in, in, start_flow_index, candidate_index);
1054 MLX5_SET(create_flow_group_in, in, end_flow_index, candidate_index +
1056 match_criteria_addr = MLX5_ADDR_OF(create_flow_group_in,
1057 in, match_criteria);
1058 memcpy(match_criteria_addr, match_criteria,
1059 MLX5_ST_SZ_BYTES(fte_match_param));
1061 fg = create_flow_group_common(ft, in, prev, true);
1067 static struct mlx5_flow_rule *find_flow_rule(struct fs_fte *fte,
1068 struct mlx5_flow_destination *dest)
1070 struct mlx5_flow_rule *rule;
1072 list_for_each_entry(rule, &fte->node.children, node.list) {
1073 if (rule->dest_attr.type == dest->type) {
1074 if ((dest->type == MLX5_FLOW_DESTINATION_TYPE_VPORT &&
1075 dest->vport_num == rule->dest_attr.vport_num) ||
1076 (dest->type == MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE &&
1077 dest->ft == rule->dest_attr.ft) ||
1078 (dest->type == MLX5_FLOW_DESTINATION_TYPE_TIR &&
1079 dest->tir_num == rule->dest_attr.tir_num))
1086 static struct mlx5_flow_rule *add_rule_fg(struct mlx5_flow_group *fg,
1090 struct mlx5_flow_destination *dest)
1093 struct mlx5_flow_rule *rule;
1094 struct mlx5_flow_table *ft;
1095 struct list_head *prev;
1097 nested_lock_ref_node(&fg->node, FS_MUTEX_PARENT);
1098 fs_for_each_fte(fte, fg) {
1099 nested_lock_ref_node(&fte->node, FS_MUTEX_CHILD);
1100 if (compare_match_value(&fg->mask, match_value, &fte->val) &&
1101 action == fte->action && flow_tag == fte->flow_tag) {
1102 rule = find_flow_rule(fte, dest);
1104 atomic_inc(&rule->node.refcount);
1105 unlock_ref_node(&fte->node);
1106 unlock_ref_node(&fg->node);
1109 rule = add_rule_fte(fte, fg, dest);
1110 unlock_ref_node(&fte->node);
1116 unlock_ref_node(&fte->node);
1118 fs_get_obj(ft, fg->node.parent);
1119 if (fg->num_ftes >= fg->max_ftes) {
1120 rule = ERR_PTR(-ENOSPC);
1124 fte = create_fte(fg, match_value, action, flow_tag, &prev);
1129 tree_init_node(&fte->node, 0, del_fte);
1130 rule = add_rule_fte(fte, fg, dest);
1138 tree_add_node(&fte->node, &fg->node);
1139 list_add(&fte->node.list, prev);
1141 tree_add_node(&rule->node, &fte->node);
1143 unlock_ref_node(&fg->node);
1147 struct mlx5_fc *mlx5_flow_rule_counter(struct mlx5_flow_rule *rule)
1149 struct mlx5_flow_rule *dst;
1152 fs_get_obj(fte, rule->node.parent);
1154 fs_for_each_dst(dst, fte) {
1155 if (dst->dest_attr.type == MLX5_FLOW_DESTINATION_TYPE_COUNTER)
1156 return dst->dest_attr.counter;
1162 static bool counter_is_valid(struct mlx5_fc *counter, u32 action)
1164 if (!(action & MLX5_FLOW_CONTEXT_ACTION_COUNT))
1170 /* Hardware support counter for a drop action only */
1171 return action == (MLX5_FLOW_CONTEXT_ACTION_DROP | MLX5_FLOW_CONTEXT_ACTION_COUNT);
1174 static bool dest_is_valid(struct mlx5_flow_destination *dest,
1176 struct mlx5_flow_table *ft)
1178 if (dest && (dest->type == MLX5_FLOW_DESTINATION_TYPE_COUNTER))
1179 return counter_is_valid(dest->counter, action);
1181 if (!(action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST))
1184 if (!dest || ((dest->type ==
1185 MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE) &&
1186 (dest->ft->level <= ft->level)))
1191 static struct mlx5_flow_rule *
1192 _mlx5_add_flow_rule(struct mlx5_flow_table *ft,
1193 struct mlx5_flow_spec *spec,
1196 struct mlx5_flow_destination *dest)
1198 struct mlx5_flow_group *g;
1199 struct mlx5_flow_rule *rule;
1201 if (!dest_is_valid(dest, action, ft))
1202 return ERR_PTR(-EINVAL);
1204 nested_lock_ref_node(&ft->node, FS_MUTEX_GRANDPARENT);
1205 fs_for_each_fg(g, ft)
1206 if (compare_match_criteria(g->mask.match_criteria_enable,
1207 spec->match_criteria_enable,
1208 g->mask.match_criteria,
1209 spec->match_criteria)) {
1210 rule = add_rule_fg(g, spec->match_value,
1211 action, flow_tag, dest);
1212 if (!IS_ERR(rule) || PTR_ERR(rule) != -ENOSPC)
1216 g = create_autogroup(ft, spec->match_criteria_enable,
1217 spec->match_criteria);
1223 rule = add_rule_fg(g, spec->match_value,
1224 action, flow_tag, dest);
1226 /* Remove assumes refcount > 0 and autogroup creates a group
1227 * with a refcount = 0.
1229 unlock_ref_node(&ft->node);
1230 tree_get_node(&g->node);
1231 tree_remove_node(&g->node);
1235 unlock_ref_node(&ft->node);
1239 static bool fwd_next_prio_supported(struct mlx5_flow_table *ft)
1241 return ((ft->type == FS_FT_NIC_RX) &&
1242 (MLX5_CAP_FLOWTABLE(get_dev(&ft->node), nic_rx_multi_path_tirs)));
1245 struct mlx5_flow_rule *
1246 mlx5_add_flow_rule(struct mlx5_flow_table *ft,
1247 struct mlx5_flow_spec *spec,
1250 struct mlx5_flow_destination *dest)
1252 struct mlx5_flow_root_namespace *root = find_root(&ft->node);
1253 struct mlx5_flow_destination gen_dest;
1254 struct mlx5_flow_table *next_ft = NULL;
1255 struct mlx5_flow_rule *rule = NULL;
1256 u32 sw_action = action;
1257 struct fs_prio *prio;
1259 fs_get_obj(prio, ft->node.parent);
1260 if (action == MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO) {
1261 if (!fwd_next_prio_supported(ft))
1262 return ERR_PTR(-EOPNOTSUPP);
1264 return ERR_PTR(-EINVAL);
1265 mutex_lock(&root->chain_lock);
1266 next_ft = find_next_chained_ft(prio);
1268 gen_dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
1269 gen_dest.ft = next_ft;
1271 action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1273 mutex_unlock(&root->chain_lock);
1274 return ERR_PTR(-EOPNOTSUPP);
1278 rule = _mlx5_add_flow_rule(ft, spec, action, flow_tag, dest);
1280 if (sw_action == MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO) {
1281 if (!IS_ERR_OR_NULL(rule) &&
1282 (list_empty(&rule->next_ft))) {
1283 mutex_lock(&next_ft->lock);
1284 list_add(&rule->next_ft, &next_ft->fwd_rules);
1285 mutex_unlock(&next_ft->lock);
1286 rule->sw_action = MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
1288 mutex_unlock(&root->chain_lock);
1292 EXPORT_SYMBOL(mlx5_add_flow_rule);
1294 void mlx5_del_flow_rule(struct mlx5_flow_rule *rule)
1296 tree_remove_node(&rule->node);
1298 EXPORT_SYMBOL(mlx5_del_flow_rule);
1300 /* Assuming prio->node.children(flow tables) is sorted by level */
1301 static struct mlx5_flow_table *find_next_ft(struct mlx5_flow_table *ft)
1303 struct fs_prio *prio;
1305 fs_get_obj(prio, ft->node.parent);
1307 if (!list_is_last(&ft->node.list, &prio->node.children))
1308 return list_next_entry(ft, node.list);
1309 return find_next_chained_ft(prio);
1312 static int update_root_ft_destroy(struct mlx5_flow_table *ft)
1314 struct mlx5_flow_root_namespace *root = find_root(&ft->node);
1315 struct mlx5_flow_table *new_root_ft = NULL;
1317 if (root->root_ft != ft)
1320 new_root_ft = find_next_ft(ft);
1322 int err = mlx5_cmd_update_root_ft(root->dev, new_root_ft);
1325 mlx5_core_warn(root->dev, "Update root flow table of id=%u failed\n",
1330 root->root_ft = new_root_ft;
1334 /* Connect flow table from previous priority to
1335 * the next flow table.
1337 static int disconnect_flow_table(struct mlx5_flow_table *ft)
1339 struct mlx5_core_dev *dev = get_dev(&ft->node);
1340 struct mlx5_flow_table *next_ft;
1341 struct fs_prio *prio;
1344 err = update_root_ft_destroy(ft);
1348 fs_get_obj(prio, ft->node.parent);
1349 if (!(list_first_entry(&prio->node.children,
1350 struct mlx5_flow_table,
1354 next_ft = find_next_chained_ft(prio);
1355 err = connect_fwd_rules(dev, next_ft, ft);
1359 err = connect_prev_fts(dev, next_ft, prio);
1361 mlx5_core_warn(dev, "Failed to disconnect flow table %d\n",
1366 int mlx5_destroy_flow_table(struct mlx5_flow_table *ft)
1368 struct mlx5_flow_root_namespace *root = find_root(&ft->node);
1371 mutex_lock(&root->chain_lock);
1372 err = disconnect_flow_table(ft);
1374 mutex_unlock(&root->chain_lock);
1377 if (tree_remove_node(&ft->node))
1378 mlx5_core_warn(get_dev(&ft->node), "Flow table %d wasn't destroyed, refcount > 1\n",
1380 mutex_unlock(&root->chain_lock);
1384 EXPORT_SYMBOL(mlx5_destroy_flow_table);
1386 void mlx5_destroy_flow_group(struct mlx5_flow_group *fg)
1388 if (tree_remove_node(&fg->node))
1389 mlx5_core_warn(get_dev(&fg->node), "Flow group %d wasn't destroyed, refcount > 1\n",
1393 struct mlx5_flow_namespace *mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
1394 enum mlx5_flow_namespace_type type)
1396 struct mlx5_flow_steering *steering = dev->priv.steering;
1397 struct mlx5_flow_root_namespace *root_ns;
1399 struct fs_prio *fs_prio;
1400 struct mlx5_flow_namespace *ns;
1406 case MLX5_FLOW_NAMESPACE_BYPASS:
1407 case MLX5_FLOW_NAMESPACE_LAG:
1408 case MLX5_FLOW_NAMESPACE_OFFLOADS:
1409 case MLX5_FLOW_NAMESPACE_ETHTOOL:
1410 case MLX5_FLOW_NAMESPACE_KERNEL:
1411 case MLX5_FLOW_NAMESPACE_LEFTOVERS:
1412 case MLX5_FLOW_NAMESPACE_ANCHOR:
1415 case MLX5_FLOW_NAMESPACE_FDB:
1416 if (steering->fdb_root_ns)
1417 return &steering->fdb_root_ns->ns;
1420 case MLX5_FLOW_NAMESPACE_ESW_EGRESS:
1421 if (steering->esw_egress_root_ns)
1422 return &steering->esw_egress_root_ns->ns;
1425 case MLX5_FLOW_NAMESPACE_ESW_INGRESS:
1426 if (steering->esw_ingress_root_ns)
1427 return &steering->esw_ingress_root_ns->ns;
1434 root_ns = steering->root_ns;
1438 fs_prio = find_prio(&root_ns->ns, prio);
1442 ns = list_first_entry(&fs_prio->node.children,
1448 EXPORT_SYMBOL(mlx5_get_flow_namespace);
1450 static struct fs_prio *fs_create_prio(struct mlx5_flow_namespace *ns,
1451 unsigned int prio, int num_levels)
1453 struct fs_prio *fs_prio;
1455 fs_prio = kzalloc(sizeof(*fs_prio), GFP_KERNEL);
1457 return ERR_PTR(-ENOMEM);
1459 fs_prio->node.type = FS_TYPE_PRIO;
1460 tree_init_node(&fs_prio->node, 1, NULL);
1461 tree_add_node(&fs_prio->node, &ns->node);
1462 fs_prio->num_levels = num_levels;
1463 fs_prio->prio = prio;
1464 list_add_tail(&fs_prio->node.list, &ns->node.children);
1469 static struct mlx5_flow_namespace *fs_init_namespace(struct mlx5_flow_namespace
1472 ns->node.type = FS_TYPE_NAMESPACE;
1477 static struct mlx5_flow_namespace *fs_create_namespace(struct fs_prio *prio)
1479 struct mlx5_flow_namespace *ns;
1481 ns = kzalloc(sizeof(*ns), GFP_KERNEL);
1483 return ERR_PTR(-ENOMEM);
1485 fs_init_namespace(ns);
1486 tree_init_node(&ns->node, 1, NULL);
1487 tree_add_node(&ns->node, &prio->node);
1488 list_add_tail(&ns->node.list, &prio->node.children);
1493 static int create_leaf_prios(struct mlx5_flow_namespace *ns, int prio,
1494 struct init_tree_node *prio_metadata)
1496 struct fs_prio *fs_prio;
1499 for (i = 0; i < prio_metadata->num_leaf_prios; i++) {
1500 fs_prio = fs_create_prio(ns, prio++, prio_metadata->num_levels);
1501 if (IS_ERR(fs_prio))
1502 return PTR_ERR(fs_prio);
1507 #define FLOW_TABLE_BIT_SZ 1
1508 #define GET_FLOW_TABLE_CAP(dev, offset) \
1509 ((be32_to_cpu(*((__be32 *)(dev->hca_caps_cur[MLX5_CAP_FLOW_TABLE]) + \
1511 (32 - FLOW_TABLE_BIT_SZ - (offset & 0x1f))) & FLOW_TABLE_BIT_SZ)
1512 static bool has_required_caps(struct mlx5_core_dev *dev, struct node_caps *caps)
1516 for (i = 0; i < caps->arr_sz; i++) {
1517 if (!GET_FLOW_TABLE_CAP(dev, caps->caps[i]))
1523 static int init_root_tree_recursive(struct mlx5_flow_steering *steering,
1524 struct init_tree_node *init_node,
1525 struct fs_node *fs_parent_node,
1526 struct init_tree_node *init_parent_node,
1529 int max_ft_level = MLX5_CAP_FLOWTABLE(steering->dev,
1530 flow_table_properties_nic_receive.
1532 struct mlx5_flow_namespace *fs_ns;
1533 struct fs_prio *fs_prio;
1534 struct fs_node *base;
1538 if (init_node->type == FS_TYPE_PRIO) {
1539 if ((init_node->min_ft_level > max_ft_level) ||
1540 !has_required_caps(steering->dev, &init_node->caps))
1543 fs_get_obj(fs_ns, fs_parent_node);
1544 if (init_node->num_leaf_prios)
1545 return create_leaf_prios(fs_ns, prio, init_node);
1546 fs_prio = fs_create_prio(fs_ns, prio, init_node->num_levels);
1547 if (IS_ERR(fs_prio))
1548 return PTR_ERR(fs_prio);
1549 base = &fs_prio->node;
1550 } else if (init_node->type == FS_TYPE_NAMESPACE) {
1551 fs_get_obj(fs_prio, fs_parent_node);
1552 fs_ns = fs_create_namespace(fs_prio);
1554 return PTR_ERR(fs_ns);
1555 base = &fs_ns->node;
1560 for (i = 0; i < init_node->ar_size; i++) {
1561 err = init_root_tree_recursive(steering, &init_node->children[i],
1562 base, init_node, prio);
1565 if (init_node->children[i].type == FS_TYPE_PRIO &&
1566 init_node->children[i].num_leaf_prios) {
1567 prio += init_node->children[i].num_leaf_prios;
1574 static int init_root_tree(struct mlx5_flow_steering *steering,
1575 struct init_tree_node *init_node,
1576 struct fs_node *fs_parent_node)
1579 struct mlx5_flow_namespace *fs_ns;
1582 fs_get_obj(fs_ns, fs_parent_node);
1583 for (i = 0; i < init_node->ar_size; i++) {
1584 err = init_root_tree_recursive(steering, &init_node->children[i],
1593 static struct mlx5_flow_root_namespace *create_root_ns(struct mlx5_flow_steering *steering,
1594 enum fs_flow_table_type
1597 struct mlx5_flow_root_namespace *root_ns;
1598 struct mlx5_flow_namespace *ns;
1600 /* Create the root namespace */
1601 root_ns = mlx5_vzalloc(sizeof(*root_ns));
1605 root_ns->dev = steering->dev;
1606 root_ns->table_type = table_type;
1609 fs_init_namespace(ns);
1610 mutex_init(&root_ns->chain_lock);
1611 tree_init_node(&ns->node, 1, NULL);
1612 tree_add_node(&ns->node, NULL);
1617 static void set_prio_attrs_in_prio(struct fs_prio *prio, int acc_level);
1619 static int set_prio_attrs_in_ns(struct mlx5_flow_namespace *ns, int acc_level)
1621 struct fs_prio *prio;
1623 fs_for_each_prio(prio, ns) {
1624 /* This updates prio start_level and num_levels */
1625 set_prio_attrs_in_prio(prio, acc_level);
1626 acc_level += prio->num_levels;
1631 static void set_prio_attrs_in_prio(struct fs_prio *prio, int acc_level)
1633 struct mlx5_flow_namespace *ns;
1634 int acc_level_ns = acc_level;
1636 prio->start_level = acc_level;
1637 fs_for_each_ns(ns, prio)
1638 /* This updates start_level and num_levels of ns's priority descendants */
1639 acc_level_ns = set_prio_attrs_in_ns(ns, acc_level);
1640 if (!prio->num_levels)
1641 prio->num_levels = acc_level_ns - prio->start_level;
1642 WARN_ON(prio->num_levels < acc_level_ns - prio->start_level);
1645 static void set_prio_attrs(struct mlx5_flow_root_namespace *root_ns)
1647 struct mlx5_flow_namespace *ns = &root_ns->ns;
1648 struct fs_prio *prio;
1649 int start_level = 0;
1651 fs_for_each_prio(prio, ns) {
1652 set_prio_attrs_in_prio(prio, start_level);
1653 start_level += prio->num_levels;
1657 #define ANCHOR_PRIO 0
1658 #define ANCHOR_SIZE 1
1659 #define ANCHOR_LEVEL 0
1660 static int create_anchor_flow_table(struct mlx5_flow_steering *steering)
1662 struct mlx5_flow_namespace *ns = NULL;
1663 struct mlx5_flow_table *ft;
1665 ns = mlx5_get_flow_namespace(steering->dev, MLX5_FLOW_NAMESPACE_ANCHOR);
1668 ft = mlx5_create_flow_table(ns, ANCHOR_PRIO, ANCHOR_SIZE, ANCHOR_LEVEL);
1670 mlx5_core_err(steering->dev, "Failed to create last anchor flow table");
1676 static int init_root_ns(struct mlx5_flow_steering *steering)
1679 steering->root_ns = create_root_ns(steering, FS_FT_NIC_RX);
1680 if (IS_ERR_OR_NULL(steering->root_ns))
1683 if (init_root_tree(steering, &root_fs, &steering->root_ns->ns.node))
1686 set_prio_attrs(steering->root_ns);
1688 if (create_anchor_flow_table(steering))
1694 mlx5_cleanup_fs(steering->dev);
1698 static void clean_tree(struct fs_node *node)
1701 struct fs_node *iter;
1702 struct fs_node *temp;
1704 list_for_each_entry_safe(iter, temp, &node->children, list)
1706 tree_remove_node(node);
1710 static void cleanup_root_ns(struct mlx5_flow_root_namespace *root_ns)
1715 clean_tree(&root_ns->ns.node);
1718 void mlx5_cleanup_fs(struct mlx5_core_dev *dev)
1720 struct mlx5_flow_steering *steering = dev->priv.steering;
1722 if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
1725 cleanup_root_ns(steering->root_ns);
1726 cleanup_root_ns(steering->esw_egress_root_ns);
1727 cleanup_root_ns(steering->esw_ingress_root_ns);
1728 cleanup_root_ns(steering->fdb_root_ns);
1729 mlx5_cleanup_fc_stats(dev);
1733 static int init_fdb_root_ns(struct mlx5_flow_steering *steering)
1735 struct fs_prio *prio;
1737 steering->fdb_root_ns = create_root_ns(steering, FS_FT_FDB);
1738 if (!steering->fdb_root_ns)
1741 prio = fs_create_prio(&steering->fdb_root_ns->ns, 0, 1);
1745 prio = fs_create_prio(&steering->fdb_root_ns->ns, 1, 1);
1749 set_prio_attrs(steering->fdb_root_ns);
1753 cleanup_root_ns(steering->fdb_root_ns);
1754 steering->fdb_root_ns = NULL;
1755 return PTR_ERR(prio);
1758 static int init_ingress_acl_root_ns(struct mlx5_flow_steering *steering)
1760 struct fs_prio *prio;
1762 steering->esw_egress_root_ns = create_root_ns(steering, FS_FT_ESW_EGRESS_ACL);
1763 if (!steering->esw_egress_root_ns)
1767 prio = fs_create_prio(&steering->esw_egress_root_ns->ns, 0,
1768 MLX5_TOTAL_VPORTS(steering->dev));
1769 return PTR_ERR_OR_ZERO(prio);
1772 static int init_egress_acl_root_ns(struct mlx5_flow_steering *steering)
1774 struct fs_prio *prio;
1776 steering->esw_ingress_root_ns = create_root_ns(steering, FS_FT_ESW_INGRESS_ACL);
1777 if (!steering->esw_ingress_root_ns)
1781 prio = fs_create_prio(&steering->esw_ingress_root_ns->ns, 0,
1782 MLX5_TOTAL_VPORTS(steering->dev));
1783 return PTR_ERR_OR_ZERO(prio);
1786 int mlx5_init_fs(struct mlx5_core_dev *dev)
1788 struct mlx5_flow_steering *steering;
1791 if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
1794 err = mlx5_init_fc_stats(dev);
1798 steering = kzalloc(sizeof(*steering), GFP_KERNEL);
1801 steering->dev = dev;
1802 dev->priv.steering = steering;
1804 if (MLX5_CAP_GEN(dev, nic_flow_table) &&
1805 MLX5_CAP_FLOWTABLE_NIC_RX(dev, ft_support)) {
1806 err = init_root_ns(steering);
1811 if (MLX5_CAP_GEN(dev, eswitch_flow_table)) {
1812 if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, ft_support)) {
1813 err = init_fdb_root_ns(steering);
1817 if (MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support)) {
1818 err = init_egress_acl_root_ns(steering);
1822 if (MLX5_CAP_ESW_INGRESS_ACL(dev, ft_support)) {
1823 err = init_ingress_acl_root_ns(steering);
1831 mlx5_cleanup_fs(dev);