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39 #include <sys/queue.h>
42 #include <rte_branch_prediction.h>
43 #include <rte_common.h>
44 #include <rte_memory.h>
45 #include <rte_malloc.h>
46 #include <rte_memzone.h>
47 #include <rte_memcpy.h>
49 #include <rte_eal_memconfig.h>
50 #include <rte_per_lcore.h>
51 #include <rte_string_fns.h>
52 #include <rte_errno.h>
53 #include <rte_rwlock.h>
54 #include <rte_spinlock.h>
58 #define RTE_LPM6_TBL24_NUM_ENTRIES (1 << 24)
59 #define RTE_LPM6_TBL8_GROUP_NUM_ENTRIES 256
60 #define RTE_LPM6_TBL8_MAX_NUM_GROUPS (1 << 21)
62 #define RTE_LPM6_VALID_EXT_ENTRY_BITMASK 0xA0000000
63 #define RTE_LPM6_LOOKUP_SUCCESS 0x20000000
64 #define RTE_LPM6_TBL8_BITMASK 0x001FFFFF
66 #define ADD_FIRST_BYTE 3
67 #define LOOKUP_FIRST_BYTE 4
69 #define BYTES2_SIZE 16
71 #define lpm6_tbl8_gindex next_hop
73 /** Flags for setting an entry as valid/invalid. */
79 TAILQ_HEAD(rte_lpm6_list, rte_tailq_entry);
81 static struct rte_tailq_elem rte_lpm6_tailq = {
84 EAL_REGISTER_TAILQ(rte_lpm6_tailq)
86 /** Tbl entry structure. It is the same for both tbl24 and tbl8 */
87 struct rte_lpm6_tbl_entry {
88 uint32_t next_hop: 21; /**< Next hop / next table to be checked. */
89 uint32_t depth :8; /**< Rule depth. */
92 uint32_t valid :1; /**< Validation flag. */
93 uint32_t valid_group :1; /**< Group validation flag. */
94 uint32_t ext_entry :1; /**< External entry. */
97 /** Rules tbl entry structure. */
98 struct rte_lpm6_rule {
99 uint8_t ip[RTE_LPM6_IPV6_ADDR_SIZE]; /**< Rule IP address. */
100 uint8_t next_hop; /**< Rule next hop. */
101 uint8_t depth; /**< Rule depth. */
104 /** LPM6 structure. */
107 char name[RTE_LPM6_NAMESIZE]; /**< Name of the lpm. */
108 uint32_t max_rules; /**< Max number of rules. */
109 uint32_t used_rules; /**< Used rules so far. */
110 uint32_t number_tbl8s; /**< Number of tbl8s to allocate. */
111 uint32_t next_tbl8; /**< Next tbl8 to be used. */
114 struct rte_lpm6_rule *rules_tbl; /**< LPM rules. */
115 struct rte_lpm6_tbl_entry tbl24[RTE_LPM6_TBL24_NUM_ENTRIES]
116 __rte_cache_aligned; /**< LPM tbl24 table. */
117 struct rte_lpm6_tbl_entry tbl8[0]
118 __rte_cache_aligned; /**< LPM tbl8 table. */
122 * Takes an array of uint8_t (IPv6 address) and masks it using the depth.
123 * It leaves untouched one bit per unit in the depth variable
124 * and set the rest to 0.
127 mask_ip(uint8_t *ip, uint8_t depth)
129 int16_t part_depth, mask;
134 for (i = 0; i < RTE_LPM6_IPV6_ADDR_SIZE; i++) {
135 if (part_depth < BYTE_SIZE && part_depth >= 0) {
136 mask = (uint16_t)(~(UINT8_MAX >> part_depth));
137 ip[i] = (uint8_t)(ip[i] & mask);
138 } else if (part_depth < 0) {
141 part_depth -= BYTE_SIZE;
146 * Allocates memory for LPM object
149 rte_lpm6_create(const char *name, int socket_id,
150 const struct rte_lpm6_config *config)
152 char mem_name[RTE_LPM6_NAMESIZE];
153 struct rte_lpm6 *lpm = NULL;
154 struct rte_tailq_entry *te;
155 uint64_t mem_size, rules_size;
156 struct rte_lpm6_list *lpm_list;
158 lpm_list = RTE_TAILQ_CAST(rte_lpm6_tailq.head, rte_lpm6_list);
160 RTE_BUILD_BUG_ON(sizeof(struct rte_lpm6_tbl_entry) != sizeof(uint32_t));
162 /* Check user arguments. */
163 if ((name == NULL) || (socket_id < -1) || (config == NULL) ||
164 (config->max_rules == 0) ||
165 config->number_tbl8s > RTE_LPM6_TBL8_MAX_NUM_GROUPS) {
170 snprintf(mem_name, sizeof(mem_name), "LPM_%s", name);
172 /* Determine the amount of memory to allocate. */
173 mem_size = sizeof(*lpm) + (sizeof(lpm->tbl8[0]) *
174 RTE_LPM6_TBL8_GROUP_NUM_ENTRIES * config->number_tbl8s);
175 rules_size = sizeof(struct rte_lpm6_rule) * config->max_rules;
177 rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
179 /* Guarantee there's no existing */
180 TAILQ_FOREACH(te, lpm_list, next) {
181 lpm = (struct rte_lpm6 *) te->data;
182 if (strncmp(name, lpm->name, RTE_LPM6_NAMESIZE) == 0)
188 /* allocate tailq entry */
189 te = rte_zmalloc("LPM6_TAILQ_ENTRY", sizeof(*te), 0);
191 RTE_LOG(ERR, LPM, "Failed to allocate tailq entry!\n");
195 /* Allocate memory to store the LPM data structures. */
196 lpm = (struct rte_lpm6 *)rte_zmalloc_socket(mem_name, (size_t)mem_size,
197 RTE_CACHE_LINE_SIZE, socket_id);
200 RTE_LOG(ERR, LPM, "LPM memory allocation failed\n");
205 lpm->rules_tbl = (struct rte_lpm6_rule *)rte_zmalloc_socket(NULL,
206 (size_t)rules_size, RTE_CACHE_LINE_SIZE, socket_id);
208 if (lpm->rules_tbl == NULL) {
209 RTE_LOG(ERR, LPM, "LPM memory allocation failed\n");
215 /* Save user arguments. */
216 lpm->max_rules = config->max_rules;
217 lpm->number_tbl8s = config->number_tbl8s;
218 snprintf(lpm->name, sizeof(lpm->name), "%s", name);
220 te->data = (void *) lpm;
222 TAILQ_INSERT_TAIL(lpm_list, te, next);
225 rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
231 * Find an existing lpm table and return a pointer to it.
234 rte_lpm6_find_existing(const char *name)
236 struct rte_lpm6 *l = NULL;
237 struct rte_tailq_entry *te;
238 struct rte_lpm6_list *lpm_list;
240 lpm_list = RTE_TAILQ_CAST(rte_lpm6_tailq.head, rte_lpm6_list);
242 rte_rwlock_read_lock(RTE_EAL_TAILQ_RWLOCK);
243 TAILQ_FOREACH(te, lpm_list, next) {
244 l = (struct rte_lpm6 *) te->data;
245 if (strncmp(name, l->name, RTE_LPM6_NAMESIZE) == 0)
248 rte_rwlock_read_unlock(RTE_EAL_TAILQ_RWLOCK);
259 * Deallocates memory for given LPM table.
262 rte_lpm6_free(struct rte_lpm6 *lpm)
264 struct rte_lpm6_list *lpm_list;
265 struct rte_tailq_entry *te;
267 /* Check user arguments. */
271 lpm_list = RTE_TAILQ_CAST(rte_lpm6_tailq.head, rte_lpm6_list);
273 rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
275 /* find our tailq entry */
276 TAILQ_FOREACH(te, lpm_list, next) {
277 if (te->data == (void *) lpm)
282 TAILQ_REMOVE(lpm_list, te, next);
284 rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
286 rte_free(lpm->rules_tbl);
292 * Checks if a rule already exists in the rules table and updates
293 * the nexthop if so. Otherwise it adds a new rule if enough space is available.
295 static inline int32_t
296 rule_add(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t next_hop, uint8_t depth)
300 /* Scan through rule list to see if rule already exists. */
301 for (rule_index = 0; rule_index < lpm->used_rules; rule_index++) {
303 /* If rule already exists update its next_hop and return. */
304 if ((memcmp (lpm->rules_tbl[rule_index].ip, ip,
305 RTE_LPM6_IPV6_ADDR_SIZE) == 0) &&
306 lpm->rules_tbl[rule_index].depth == depth) {
307 lpm->rules_tbl[rule_index].next_hop = next_hop;
314 * If rule does not exist check if there is space to add a new rule to
315 * this rule group. If there is no space return error.
317 if (lpm->used_rules == lpm->max_rules) {
321 /* If there is space for the new rule add it. */
322 rte_memcpy(lpm->rules_tbl[rule_index].ip, ip, RTE_LPM6_IPV6_ADDR_SIZE);
323 lpm->rules_tbl[rule_index].next_hop = next_hop;
324 lpm->rules_tbl[rule_index].depth = depth;
326 /* Increment the used rules counter for this rule group. */
333 * Function that expands a rule across the data structure when a less-generic
334 * one has been added before. It assures that every possible combination of bits
335 * in the IP address returns a match.
338 expand_rule(struct rte_lpm6 *lpm, uint32_t tbl8_gindex, uint8_t depth,
341 uint32_t tbl8_group_end, tbl8_gindex_next, j;
343 tbl8_group_end = tbl8_gindex + RTE_LPM6_TBL8_GROUP_NUM_ENTRIES;
345 struct rte_lpm6_tbl_entry new_tbl8_entry = {
347 .valid_group = VALID,
349 .next_hop = next_hop,
353 for (j = tbl8_gindex; j < tbl8_group_end; j++) {
354 if (!lpm->tbl8[j].valid || (lpm->tbl8[j].ext_entry == 0
355 && lpm->tbl8[j].depth <= depth)) {
357 lpm->tbl8[j] = new_tbl8_entry;
359 } else if (lpm->tbl8[j].ext_entry == 1) {
361 tbl8_gindex_next = lpm->tbl8[j].lpm6_tbl8_gindex
362 * RTE_LPM6_TBL8_GROUP_NUM_ENTRIES;
363 expand_rule(lpm, tbl8_gindex_next, depth, next_hop);
369 * Partially adds a new route to the data structure (tbl24+tbl8s).
370 * It returns 0 on success, a negative number on failure, or 1 if
371 * the process needs to be continued by calling the function again.
374 add_step(struct rte_lpm6 *lpm, struct rte_lpm6_tbl_entry *tbl,
375 struct rte_lpm6_tbl_entry **tbl_next, uint8_t *ip, uint8_t bytes,
376 uint8_t first_byte, uint8_t depth, uint8_t next_hop)
378 uint32_t tbl_index, tbl_range, tbl8_group_start, tbl8_group_end, i;
381 uint8_t bits_covered;
384 * Calculate index to the table based on the number and position
385 * of the bytes being inspected in this step.
388 for (i = first_byte; i < (uint32_t)(first_byte + bytes); i++) {
389 bitshift = (int8_t)((bytes - i)*BYTE_SIZE);
391 if (bitshift < 0) bitshift = 0;
392 tbl_index = tbl_index | ip[i-1] << bitshift;
395 /* Number of bits covered in this step */
396 bits_covered = (uint8_t)((bytes+first_byte-1)*BYTE_SIZE);
399 * If depth if smaller than this number (ie this is the last step)
400 * expand the rule across the relevant positions in the table.
402 if (depth <= bits_covered) {
403 tbl_range = 1 << (bits_covered - depth);
405 for (i = tbl_index; i < (tbl_index + tbl_range); i++) {
406 if (!tbl[i].valid || (tbl[i].ext_entry == 0 &&
407 tbl[i].depth <= depth)) {
409 struct rte_lpm6_tbl_entry new_tbl_entry = {
410 .next_hop = next_hop,
413 .valid_group = VALID,
417 tbl[i] = new_tbl_entry;
419 } else if (tbl[i].ext_entry == 1) {
422 * If tbl entry is valid and extended calculate the index
423 * into next tbl8 and expand the rule across the data structure.
425 tbl8_gindex = tbl[i].lpm6_tbl8_gindex *
426 RTE_LPM6_TBL8_GROUP_NUM_ENTRIES;
427 expand_rule(lpm, tbl8_gindex, depth, next_hop);
434 * If this is not the last step just fill one position
435 * and calculate the index to the next table.
438 /* If it's invalid a new tbl8 is needed */
439 if (!tbl[tbl_index].valid) {
440 if (lpm->next_tbl8 < lpm->number_tbl8s)
441 tbl8_gindex = (lpm->next_tbl8)++;
445 struct rte_lpm6_tbl_entry new_tbl_entry = {
446 .lpm6_tbl8_gindex = tbl8_gindex,
449 .valid_group = VALID,
453 tbl[tbl_index] = new_tbl_entry;
456 * If it's valid but not extended the rule that was stored *
457 * here needs to be moved to the next table.
459 else if (tbl[tbl_index].ext_entry == 0) {
460 /* Search for free tbl8 group. */
461 if (lpm->next_tbl8 < lpm->number_tbl8s)
462 tbl8_gindex = (lpm->next_tbl8)++;
466 tbl8_group_start = tbl8_gindex *
467 RTE_LPM6_TBL8_GROUP_NUM_ENTRIES;
468 tbl8_group_end = tbl8_group_start +
469 RTE_LPM6_TBL8_GROUP_NUM_ENTRIES;
471 /* Populate new tbl8 with tbl value. */
472 for (i = tbl8_group_start; i < tbl8_group_end; i++) {
473 lpm->tbl8[i].valid = VALID;
474 lpm->tbl8[i].depth = tbl[tbl_index].depth;
475 lpm->tbl8[i].next_hop = tbl[tbl_index].next_hop;
476 lpm->tbl8[i].ext_entry = 0;
480 * Update tbl entry to point to new tbl8 entry. Note: The
481 * ext_flag and tbl8_index need to be updated simultaneously,
482 * so assign whole structure in one go.
484 struct rte_lpm6_tbl_entry new_tbl_entry = {
485 .lpm6_tbl8_gindex = tbl8_gindex,
488 .valid_group = VALID,
492 tbl[tbl_index] = new_tbl_entry;
495 *tbl_next = &(lpm->tbl8[tbl[tbl_index].lpm6_tbl8_gindex *
496 RTE_LPM6_TBL8_GROUP_NUM_ENTRIES]);
506 rte_lpm6_add(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
509 struct rte_lpm6_tbl_entry *tbl;
510 struct rte_lpm6_tbl_entry *tbl_next;
513 uint8_t masked_ip[RTE_LPM6_IPV6_ADDR_SIZE];
516 /* Check user arguments. */
517 if ((lpm == NULL) || (depth < 1) || (depth > RTE_LPM6_MAX_DEPTH))
520 /* Copy the IP and mask it to avoid modifying user's input data. */
521 memcpy(masked_ip, ip, RTE_LPM6_IPV6_ADDR_SIZE);
522 mask_ip(masked_ip, depth);
524 /* Add the rule to the rule table. */
525 rule_index = rule_add(lpm, masked_ip, next_hop, depth);
527 /* If there is no space available for new rule return error. */
528 if (rule_index < 0) {
532 /* Inspect the first three bytes through tbl24 on the first step. */
534 status = add_step (lpm, tbl, &tbl_next, masked_ip, ADD_FIRST_BYTE, 1,
537 rte_lpm6_delete(lpm, masked_ip, depth);
543 * Inspect one by one the rest of the bytes until
544 * the process is completed.
546 for (i = ADD_FIRST_BYTE; i < RTE_LPM6_IPV6_ADDR_SIZE && status == 1; i++) {
548 status = add_step (lpm, tbl, &tbl_next, masked_ip, 1, (uint8_t)(i+1),
551 rte_lpm6_delete(lpm, masked_ip, depth);
561 * Takes a pointer to a table entry and inspect one level.
562 * The function returns 0 on lookup success, ENOENT if no match was found
563 * or 1 if the process needs to be continued by calling the function again.
566 lookup_step(const struct rte_lpm6 *lpm, const struct rte_lpm6_tbl_entry *tbl,
567 const struct rte_lpm6_tbl_entry **tbl_next, uint8_t *ip,
568 uint8_t first_byte, uint8_t *next_hop)
570 uint32_t tbl8_index, tbl_entry;
572 /* Take the integer value from the pointer. */
573 tbl_entry = *(const uint32_t *)tbl;
575 /* If it is valid and extended we calculate the new pointer to return. */
576 if ((tbl_entry & RTE_LPM6_VALID_EXT_ENTRY_BITMASK) ==
577 RTE_LPM6_VALID_EXT_ENTRY_BITMASK) {
579 tbl8_index = ip[first_byte-1] +
580 ((tbl_entry & RTE_LPM6_TBL8_BITMASK) *
581 RTE_LPM6_TBL8_GROUP_NUM_ENTRIES);
583 *tbl_next = &lpm->tbl8[tbl8_index];
587 /* If not extended then we can have a match. */
588 *next_hop = (uint8_t)tbl_entry;
589 return (tbl_entry & RTE_LPM6_LOOKUP_SUCCESS) ? 0 : -ENOENT;
597 rte_lpm6_lookup(const struct rte_lpm6 *lpm, uint8_t *ip, uint8_t *next_hop)
599 const struct rte_lpm6_tbl_entry *tbl;
600 const struct rte_lpm6_tbl_entry *tbl_next;
603 uint32_t tbl24_index;
605 /* DEBUG: Check user input arguments. */
606 if ((lpm == NULL) || (ip == NULL) || (next_hop == NULL)) {
610 first_byte = LOOKUP_FIRST_BYTE;
611 tbl24_index = (ip[0] << BYTES2_SIZE) | (ip[1] << BYTE_SIZE) | ip[2];
613 /* Calculate pointer to the first entry to be inspected */
614 tbl = &lpm->tbl24[tbl24_index];
617 /* Continue inspecting following levels until success or failure */
618 status = lookup_step(lpm, tbl, &tbl_next, ip, first_byte++, next_hop);
620 } while (status == 1);
626 * Looks up a group of IP addresses
629 rte_lpm6_lookup_bulk_func(const struct rte_lpm6 *lpm,
630 uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE],
631 int16_t * next_hops, unsigned n)
634 const struct rte_lpm6_tbl_entry *tbl;
635 const struct rte_lpm6_tbl_entry *tbl_next;
636 uint32_t tbl24_index;
637 uint8_t first_byte, next_hop;
640 /* DEBUG: Check user input arguments. */
641 if ((lpm == NULL) || (ips == NULL) || (next_hops == NULL)) {
645 for (i = 0; i < n; i++) {
646 first_byte = LOOKUP_FIRST_BYTE;
647 tbl24_index = (ips[i][0] << BYTES2_SIZE) |
648 (ips[i][1] << BYTE_SIZE) | ips[i][2];
650 /* Calculate pointer to the first entry to be inspected */
651 tbl = &lpm->tbl24[tbl24_index];
654 /* Continue inspecting following levels until success or failure */
655 status = lookup_step(lpm, tbl, &tbl_next, ips[i], first_byte++,
658 } while (status == 1);
663 next_hops[i] = next_hop;
670 * Finds a rule in rule table.
671 * NOTE: Valid range for depth parameter is 1 .. 128 inclusive.
673 static inline int32_t
674 rule_find(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth)
678 /* Scan used rules at given depth to find rule. */
679 for (rule_index = 0; rule_index < lpm->used_rules; rule_index++) {
680 /* If rule is found return the rule index. */
681 if ((memcmp (lpm->rules_tbl[rule_index].ip, ip,
682 RTE_LPM6_IPV6_ADDR_SIZE) == 0) &&
683 lpm->rules_tbl[rule_index].depth == depth) {
689 /* If rule is not found return -ENOENT. */
694 * Look for a rule in the high-level rules table
697 rte_lpm6_is_rule_present(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth,
700 uint8_t ip_masked[RTE_LPM6_IPV6_ADDR_SIZE];
703 /* Check user arguments. */
704 if ((lpm == NULL) || next_hop == NULL || ip == NULL ||
705 (depth < 1) || (depth > RTE_LPM6_MAX_DEPTH))
708 /* Copy the IP and mask it to avoid modifying user's input data. */
709 memcpy(ip_masked, ip, RTE_LPM6_IPV6_ADDR_SIZE);
710 mask_ip(ip_masked, depth);
712 /* Look for the rule using rule_find. */
713 rule_index = rule_find(lpm, ip_masked, depth);
715 if (rule_index >= 0) {
716 *next_hop = lpm->rules_tbl[rule_index].next_hop;
720 /* If rule is not found return 0. */
725 * Delete a rule from the rule table.
726 * NOTE: Valid range for depth parameter is 1 .. 128 inclusive.
729 rule_delete(struct rte_lpm6 *lpm, int32_t rule_index)
732 * Overwrite redundant rule with last rule in group and decrement rule
735 lpm->rules_tbl[rule_index] = lpm->rules_tbl[lpm->used_rules-1];
743 rte_lpm6_delete(struct rte_lpm6 *lpm, uint8_t *ip, uint8_t depth)
745 int32_t rule_to_delete_index;
746 uint8_t ip_masked[RTE_LPM6_IPV6_ADDR_SIZE];
750 * Check input arguments.
752 if ((lpm == NULL) || (depth < 1) || (depth > RTE_LPM6_MAX_DEPTH)) {
756 /* Copy the IP and mask it to avoid modifying user's input data. */
757 memcpy(ip_masked, ip, RTE_LPM6_IPV6_ADDR_SIZE);
758 mask_ip(ip_masked, depth);
761 * Find the index of the input rule, that needs to be deleted, in the
764 rule_to_delete_index = rule_find(lpm, ip_masked, depth);
767 * Check if rule_to_delete_index was found. If no rule was found the
768 * function rule_find returns -ENOENT.
770 if (rule_to_delete_index < 0)
771 return rule_to_delete_index;
773 /* Delete the rule from the rule table. */
774 rule_delete(lpm, rule_to_delete_index);
777 * Set all the table entries to 0 (ie delete every rule
778 * from the data structure.
781 memset(lpm->tbl24, 0, sizeof(lpm->tbl24));
782 memset(lpm->tbl8, 0, sizeof(lpm->tbl8[0])
783 * RTE_LPM6_TBL8_GROUP_NUM_ENTRIES * lpm->number_tbl8s);
786 * Add every rule again (except for the one that was removed from
789 for (i = 0; i < lpm->used_rules; i++) {
790 rte_lpm6_add(lpm, lpm->rules_tbl[i].ip, lpm->rules_tbl[i].depth,
791 lpm->rules_tbl[i].next_hop);
798 * Deletes a group of rules
801 rte_lpm6_delete_bulk_func(struct rte_lpm6 *lpm,
802 uint8_t ips[][RTE_LPM6_IPV6_ADDR_SIZE], uint8_t *depths, unsigned n)
804 int32_t rule_to_delete_index;
805 uint8_t ip_masked[RTE_LPM6_IPV6_ADDR_SIZE];
809 * Check input arguments.
811 if ((lpm == NULL) || (ips == NULL) || (depths == NULL)) {
815 for (i = 0; i < n; i++) {
816 /* Copy the IP and mask it to avoid modifying user's input data. */
817 memcpy(ip_masked, ips[i], RTE_LPM6_IPV6_ADDR_SIZE);
818 mask_ip(ip_masked, depths[i]);
821 * Find the index of the input rule, that needs to be deleted, in the
824 rule_to_delete_index = rule_find(lpm, ip_masked, depths[i]);
827 * Check if rule_to_delete_index was found. If no rule was found the
828 * function rule_find returns -ENOENT.
830 if (rule_to_delete_index < 0)
833 /* Delete the rule from the rule table. */
834 rule_delete(lpm, rule_to_delete_index);
838 * Set all the table entries to 0 (ie delete every rule
839 * from the data structure.
842 memset(lpm->tbl24, 0, sizeof(lpm->tbl24));
843 memset(lpm->tbl8, 0, sizeof(lpm->tbl8[0])
844 * RTE_LPM6_TBL8_GROUP_NUM_ENTRIES * lpm->number_tbl8s);
847 * Add every rule again (except for the ones that were removed from
850 for (i = 0; i < lpm->used_rules; i++) {
851 rte_lpm6_add(lpm, lpm->rules_tbl[i].ip, lpm->rules_tbl[i].depth,
852 lpm->rules_tbl[i].next_hop);
859 * Delete all rules from the LPM table.
862 rte_lpm6_delete_all(struct rte_lpm6 *lpm)
864 /* Zero used rules counter. */
867 /* Zero next tbl8 index. */
871 memset(lpm->tbl24, 0, sizeof(lpm->tbl24));
874 memset(lpm->tbl8, 0, sizeof(lpm->tbl8[0]) *
875 RTE_LPM6_TBL8_GROUP_NUM_ENTRIES * lpm->number_tbl8s);
877 /* Delete all rules form the rules table. */
878 memset(lpm->rules_tbl, 0, sizeof(struct rte_lpm6_rule) * lpm->max_rules);