/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
+ * Copyright(c) 2020 Arm Limited
*/
#include <string.h>
#include <rte_rwlock.h>
#include <rte_spinlock.h>
#include <rte_tailq.h>
-#include <rte_function_versioning.h>
#include "rte_lpm.h"
VALID
};
+/** @internal LPM structure. */
+struct __rte_lpm {
+ /* LPM metadata. */
+ struct rte_lpm lpm;
+
+ /* RCU config. */
+ struct rte_rcu_qsbr *v; /* RCU QSBR variable. */
+ enum rte_lpm_qsbr_mode rcu_mode;/* Blocking, defer queue. */
+ struct rte_rcu_qsbr_dq *dq; /* RCU QSBR defer queue. */
+};
+
/* Macro to enable/disable run-time checks. */
#if defined(RTE_LIBRTE_LPM_DEBUG)
#include <rte_debug.h>
/*
* Find an existing lpm table and return a pointer to it.
*/
-struct rte_lpm_v20 * __vsym
-rte_lpm_find_existing_v20(const char *name)
-{
- struct rte_lpm_v20 *l = NULL;
- struct rte_tailq_entry *te;
- struct rte_lpm_list *lpm_list;
-
- lpm_list = RTE_TAILQ_CAST(rte_lpm_tailq.head, rte_lpm_list);
-
- rte_mcfg_tailq_read_lock();
- TAILQ_FOREACH(te, lpm_list, next) {
- l = te->data;
- if (strncmp(name, l->name, RTE_LPM_NAMESIZE) == 0)
- break;
- }
- rte_mcfg_tailq_read_unlock();
-
- if (te == NULL) {
- rte_errno = ENOENT;
- return NULL;
- }
-
- return l;
-}
-VERSION_SYMBOL(rte_lpm_find_existing, _v20, 2.0);
-
-struct rte_lpm * __vsym
-rte_lpm_find_existing_v1604(const char *name)
+struct rte_lpm *
+rte_lpm_find_existing(const char *name)
{
struct rte_lpm *l = NULL;
struct rte_tailq_entry *te;
return l;
}
-BIND_DEFAULT_SYMBOL(rte_lpm_find_existing, _v1604, 16.04);
-MAP_STATIC_SYMBOL(struct rte_lpm *rte_lpm_find_existing(const char *name),
- rte_lpm_find_existing_v1604);
/*
* Allocates memory for LPM object
*/
-struct rte_lpm_v20 * __vsym
-rte_lpm_create_v20(const char *name, int socket_id, int max_rules,
- __rte_unused int flags)
-{
- char mem_name[RTE_LPM_NAMESIZE];
- struct rte_lpm_v20 *lpm = NULL;
- struct rte_tailq_entry *te;
- uint32_t mem_size;
- struct rte_lpm_list *lpm_list;
-
- lpm_list = RTE_TAILQ_CAST(rte_lpm_tailq.head, rte_lpm_list);
-
- RTE_BUILD_BUG_ON(sizeof(struct rte_lpm_tbl_entry_v20) != 2);
-
- /* Check user arguments. */
- if ((name == NULL) || (socket_id < -1) || (max_rules == 0)) {
- rte_errno = EINVAL;
- return NULL;
- }
-
- snprintf(mem_name, sizeof(mem_name), "LPM_%s", name);
-
- /* Determine the amount of memory to allocate. */
- mem_size = sizeof(*lpm) + (sizeof(lpm->rules_tbl[0]) * max_rules);
-
- rte_mcfg_tailq_write_lock();
-
- /* guarantee there's no existing */
- TAILQ_FOREACH(te, lpm_list, next) {
- lpm = te->data;
- if (strncmp(name, lpm->name, RTE_LPM_NAMESIZE) == 0)
- break;
- }
-
- if (te != NULL) {
- lpm = NULL;
- rte_errno = EEXIST;
- goto exit;
- }
-
- /* allocate tailq entry */
- te = rte_zmalloc("LPM_TAILQ_ENTRY", sizeof(*te), 0);
- if (te == NULL) {
- RTE_LOG(ERR, LPM, "Failed to allocate tailq entry\n");
- rte_errno = ENOMEM;
- goto exit;
- }
-
- /* Allocate memory to store the LPM data structures. */
- lpm = rte_zmalloc_socket(mem_name, mem_size,
- RTE_CACHE_LINE_SIZE, socket_id);
- if (lpm == NULL) {
- RTE_LOG(ERR, LPM, "LPM memory allocation failed\n");
- rte_free(te);
- rte_errno = ENOMEM;
- goto exit;
- }
-
- /* Save user arguments. */
- lpm->max_rules = max_rules;
- strlcpy(lpm->name, name, sizeof(lpm->name));
-
- te->data = lpm;
-
- TAILQ_INSERT_TAIL(lpm_list, te, next);
-
-exit:
- rte_mcfg_tailq_write_unlock();
-
- return lpm;
-}
-VERSION_SYMBOL(rte_lpm_create, _v20, 2.0);
-
-struct rte_lpm * __vsym
-rte_lpm_create_v1604(const char *name, int socket_id,
+struct rte_lpm *
+rte_lpm_create(const char *name, int socket_id,
const struct rte_lpm_config *config)
{
char mem_name[RTE_LPM_NAMESIZE];
+ struct __rte_lpm *internal_lpm;
struct rte_lpm *lpm = NULL;
struct rte_tailq_entry *te;
uint32_t mem_size, rules_size, tbl8s_size;
snprintf(mem_name, sizeof(mem_name), "LPM_%s", name);
- /* Determine the amount of memory to allocate. */
- mem_size = sizeof(*lpm);
- rules_size = sizeof(struct rte_lpm_rule) * config->max_rules;
- tbl8s_size = (sizeof(struct rte_lpm_tbl_entry) *
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES * config->number_tbl8s);
-
rte_mcfg_tailq_write_lock();
/* guarantee there's no existing */
goto exit;
}
+ /* Determine the amount of memory to allocate. */
+ mem_size = sizeof(*internal_lpm);
+ rules_size = sizeof(struct rte_lpm_rule) * config->max_rules;
+ tbl8s_size = sizeof(struct rte_lpm_tbl_entry) *
+ RTE_LPM_TBL8_GROUP_NUM_ENTRIES * config->number_tbl8s;
+
/* allocate tailq entry */
te = rte_zmalloc("LPM_TAILQ_ENTRY", sizeof(*te), 0);
if (te == NULL) {
}
/* Allocate memory to store the LPM data structures. */
- lpm = rte_zmalloc_socket(mem_name, mem_size,
+ internal_lpm = rte_zmalloc_socket(mem_name, mem_size,
RTE_CACHE_LINE_SIZE, socket_id);
- if (lpm == NULL) {
+ if (internal_lpm == NULL) {
RTE_LOG(ERR, LPM, "LPM memory allocation failed\n");
rte_free(te);
rte_errno = ENOMEM;
goto exit;
}
+ lpm = &internal_lpm->lpm;
lpm->rules_tbl = rte_zmalloc_socket(NULL,
(size_t)rules_size, RTE_CACHE_LINE_SIZE, socket_id);
if (lpm->rules_tbl == NULL) {
RTE_LOG(ERR, LPM, "LPM rules_tbl memory allocation failed\n");
- rte_free(lpm);
+ rte_free(internal_lpm);
+ internal_lpm = NULL;
lpm = NULL;
rte_free(te);
rte_errno = ENOMEM;
if (lpm->tbl8 == NULL) {
RTE_LOG(ERR, LPM, "LPM tbl8 memory allocation failed\n");
rte_free(lpm->rules_tbl);
- rte_free(lpm);
+ rte_free(internal_lpm);
+ internal_lpm = NULL;
lpm = NULL;
rte_free(te);
rte_errno = ENOMEM;
return lpm;
}
-BIND_DEFAULT_SYMBOL(rte_lpm_create, _v1604, 16.04);
-MAP_STATIC_SYMBOL(
- struct rte_lpm *rte_lpm_create(const char *name, int socket_id,
- const struct rte_lpm_config *config), rte_lpm_create_v1604);
/*
* Deallocates memory for given LPM table.
*/
-void __vsym
-rte_lpm_free_v20(struct rte_lpm_v20 *lpm)
+void
+rte_lpm_free(struct rte_lpm *lpm)
{
+ struct __rte_lpm *internal_lpm;
struct rte_lpm_list *lpm_list;
struct rte_tailq_entry *te;
rte_mcfg_tailq_write_unlock();
+ internal_lpm = container_of(lpm, struct __rte_lpm, lpm);
+ if (internal_lpm->dq != NULL)
+ rte_rcu_qsbr_dq_delete(internal_lpm->dq);
+ rte_free(lpm->tbl8);
+ rte_free(lpm->rules_tbl);
rte_free(lpm);
rte_free(te);
}
-VERSION_SYMBOL(rte_lpm_free, _v20, 2.0);
-void __vsym
-rte_lpm_free_v1604(struct rte_lpm *lpm)
+static void
+__lpm_rcu_qsbr_free_resource(void *p, void *data, unsigned int n)
{
- struct rte_lpm_list *lpm_list;
- struct rte_tailq_entry *te;
+ struct rte_lpm_tbl_entry *tbl8 = ((struct rte_lpm *)p)->tbl8;
+ struct rte_lpm_tbl_entry zero_tbl8_entry = {0};
+ uint32_t tbl8_group_index = *(uint32_t *)data;
- /* Check user arguments. */
- if (lpm == NULL)
- return;
+ RTE_SET_USED(n);
+ /* Set tbl8 group invalid */
+ __atomic_store(&tbl8[tbl8_group_index], &zero_tbl8_entry,
+ __ATOMIC_RELAXED);
+}
- lpm_list = RTE_TAILQ_CAST(rte_lpm_tailq.head, rte_lpm_list);
+/* Associate QSBR variable with an LPM object.
+ */
+int
+rte_lpm_rcu_qsbr_add(struct rte_lpm *lpm, struct rte_lpm_rcu_config *cfg,
+ struct rte_rcu_qsbr_dq **dq)
+{
+ struct rte_rcu_qsbr_dq_parameters params = {0};
+ char rcu_dq_name[RTE_RCU_QSBR_DQ_NAMESIZE];
+ struct __rte_lpm *internal_lpm;
- rte_mcfg_tailq_write_lock();
+ if (lpm == NULL || cfg == NULL) {
+ rte_errno = EINVAL;
+ return 1;
+ }
- /* find our tailq entry */
- TAILQ_FOREACH(te, lpm_list, next) {
- if (te->data == (void *) lpm)
- break;
+ internal_lpm = container_of(lpm, struct __rte_lpm, lpm);
+ if (internal_lpm->v != NULL) {
+ rte_errno = EEXIST;
+ return 1;
}
- if (te != NULL)
- TAILQ_REMOVE(lpm_list, te, next);
- rte_mcfg_tailq_write_unlock();
+ if (cfg->mode == RTE_LPM_QSBR_MODE_SYNC) {
+ /* No other things to do. */
+ } else if (cfg->mode == RTE_LPM_QSBR_MODE_DQ) {
+ /* Init QSBR defer queue. */
+ snprintf(rcu_dq_name, sizeof(rcu_dq_name),
+ "LPM_RCU_%s", lpm->name);
+ params.name = rcu_dq_name;
+ params.size = cfg->dq_size;
+ if (params.size == 0)
+ params.size = lpm->number_tbl8s;
+ params.trigger_reclaim_limit = cfg->reclaim_thd;
+ params.max_reclaim_size = cfg->reclaim_max;
+ if (params.max_reclaim_size == 0)
+ params.max_reclaim_size = RTE_LPM_RCU_DQ_RECLAIM_MAX;
+ params.esize = sizeof(uint32_t); /* tbl8 group index */
+ params.free_fn = __lpm_rcu_qsbr_free_resource;
+ params.p = lpm;
+ params.v = cfg->v;
+ internal_lpm->dq = rte_rcu_qsbr_dq_create(¶ms);
+ if (internal_lpm->dq == NULL) {
+ RTE_LOG(ERR, LPM, "LPM defer queue creation failed\n");
+ return 1;
+ }
+ if (dq != NULL)
+ *dq = internal_lpm->dq;
+ } else {
+ rte_errno = EINVAL;
+ return 1;
+ }
+ internal_lpm->rcu_mode = cfg->mode;
+ internal_lpm->v = cfg->v;
- rte_free(lpm->tbl8);
- rte_free(lpm->rules_tbl);
- rte_free(lpm);
- rte_free(te);
+ return 0;
}
-BIND_DEFAULT_SYMBOL(rte_lpm_free, _v1604, 16.04);
-MAP_STATIC_SYMBOL(void rte_lpm_free(struct rte_lpm *lpm),
- rte_lpm_free_v1604);
/*
* Adds a rule to the rule table.
* NOTE: Valid range for depth parameter is 1 .. 32 inclusive.
*/
static int32_t
-rule_add_v20(struct rte_lpm_v20 *lpm, uint32_t ip_masked, uint8_t depth,
- uint8_t next_hop)
-{
- uint32_t rule_gindex, rule_index, last_rule;
- int i;
-
- VERIFY_DEPTH(depth);
-
- /* Scan through rule group to see if rule already exists. */
- if (lpm->rule_info[depth - 1].used_rules > 0) {
-
- /* rule_gindex stands for rule group index. */
- rule_gindex = lpm->rule_info[depth - 1].first_rule;
- /* Initialise rule_index to point to start of rule group. */
- rule_index = rule_gindex;
- /* Last rule = Last used rule in this rule group. */
- last_rule = rule_gindex + lpm->rule_info[depth - 1].used_rules;
-
- for (; rule_index < last_rule; rule_index++) {
-
- /* If rule already exists update its next_hop and return. */
- if (lpm->rules_tbl[rule_index].ip == ip_masked) {
- lpm->rules_tbl[rule_index].next_hop = next_hop;
-
- return rule_index;
- }
- }
-
- if (rule_index == lpm->max_rules)
- return -ENOSPC;
- } else {
- /* Calculate the position in which the rule will be stored. */
- rule_index = 0;
-
- for (i = depth - 1; i > 0; i--) {
- if (lpm->rule_info[i - 1].used_rules > 0) {
- rule_index = lpm->rule_info[i - 1].first_rule
- + lpm->rule_info[i - 1].used_rules;
- break;
- }
- }
- if (rule_index == lpm->max_rules)
- return -ENOSPC;
-
- lpm->rule_info[depth - 1].first_rule = rule_index;
- }
-
- /* Make room for the new rule in the array. */
- for (i = RTE_LPM_MAX_DEPTH; i > depth; i--) {
- if (lpm->rule_info[i - 1].first_rule
- + lpm->rule_info[i - 1].used_rules == lpm->max_rules)
- return -ENOSPC;
-
- if (lpm->rule_info[i - 1].used_rules > 0) {
- lpm->rules_tbl[lpm->rule_info[i - 1].first_rule
- + lpm->rule_info[i - 1].used_rules]
- = lpm->rules_tbl[lpm->rule_info[i - 1].first_rule];
- lpm->rule_info[i - 1].first_rule++;
- }
- }
-
- /* Add the new rule. */
- lpm->rules_tbl[rule_index].ip = ip_masked;
- lpm->rules_tbl[rule_index].next_hop = next_hop;
-
- /* Increment the used rules counter for this rule group. */
- lpm->rule_info[depth - 1].used_rules++;
-
- return rule_index;
-}
-
-static int32_t
-rule_add_v1604(struct rte_lpm *lpm, uint32_t ip_masked, uint8_t depth,
+rule_add(struct rte_lpm *lpm, uint32_t ip_masked, uint8_t depth,
uint32_t next_hop)
{
uint32_t rule_gindex, rule_index, last_rule;
for (; rule_index < last_rule; rule_index++) {
- /* If rule already exists update its next_hop and return. */
+ /* If rule already exists update next hop and return. */
if (lpm->rules_tbl[rule_index].ip == ip_masked) {
+
+ if (lpm->rules_tbl[rule_index].next_hop
+ == next_hop)
+ return -EEXIST;
lpm->rules_tbl[rule_index].next_hop = next_hop;
return rule_index;
* NOTE: Valid range for depth parameter is 1 .. 32 inclusive.
*/
static void
-rule_delete_v20(struct rte_lpm_v20 *lpm, int32_t rule_index, uint8_t depth)
-{
- int i;
-
- VERIFY_DEPTH(depth);
-
- lpm->rules_tbl[rule_index] =
- lpm->rules_tbl[lpm->rule_info[depth - 1].first_rule
- + lpm->rule_info[depth - 1].used_rules - 1];
-
- for (i = depth; i < RTE_LPM_MAX_DEPTH; i++) {
- if (lpm->rule_info[i].used_rules > 0) {
- lpm->rules_tbl[lpm->rule_info[i].first_rule - 1] =
- lpm->rules_tbl[lpm->rule_info[i].first_rule
- + lpm->rule_info[i].used_rules - 1];
- lpm->rule_info[i].first_rule--;
- }
- }
-
- lpm->rule_info[depth - 1].used_rules--;
-}
-
-static void
-rule_delete_v1604(struct rte_lpm *lpm, int32_t rule_index, uint8_t depth)
+rule_delete(struct rte_lpm *lpm, int32_t rule_index, uint8_t depth)
{
int i;
* NOTE: Valid range for depth parameter is 1 .. 32 inclusive.
*/
static int32_t
-rule_find_v20(struct rte_lpm_v20 *lpm, uint32_t ip_masked, uint8_t depth)
-{
- uint32_t rule_gindex, last_rule, rule_index;
-
- VERIFY_DEPTH(depth);
-
- rule_gindex = lpm->rule_info[depth - 1].first_rule;
- last_rule = rule_gindex + lpm->rule_info[depth - 1].used_rules;
-
- /* Scan used rules at given depth to find rule. */
- for (rule_index = rule_gindex; rule_index < last_rule; rule_index++) {
- /* If rule is found return the rule index. */
- if (lpm->rules_tbl[rule_index].ip == ip_masked)
- return rule_index;
- }
-
- /* If rule is not found return -EINVAL. */
- return -EINVAL;
-}
-
-static int32_t
-rule_find_v1604(struct rte_lpm *lpm, uint32_t ip_masked, uint8_t depth)
+rule_find(struct rte_lpm *lpm, uint32_t ip_masked, uint8_t depth)
{
uint32_t rule_gindex, last_rule, rule_index;
* Find, clean and allocate a tbl8.
*/
static int32_t
-tbl8_alloc_v20(struct rte_lpm_tbl_entry_v20 *tbl8)
+_tbl8_alloc(struct rte_lpm *lpm)
{
uint32_t group_idx; /* tbl8 group index. */
- struct rte_lpm_tbl_entry_v20 *tbl8_entry;
+ struct rte_lpm_tbl_entry *tbl8_entry;
/* Scan through tbl8 to find a free (i.e. INVALID) tbl8 group. */
- for (group_idx = 0; group_idx < RTE_LPM_TBL8_NUM_GROUPS;
- group_idx++) {
- tbl8_entry = &tbl8[group_idx * RTE_LPM_TBL8_GROUP_NUM_ENTRIES];
+ for (group_idx = 0; group_idx < lpm->number_tbl8s; group_idx++) {
+ tbl8_entry = &lpm->tbl8[group_idx *
+ RTE_LPM_TBL8_GROUP_NUM_ENTRIES];
/* If a free tbl8 group is found clean it and set as VALID. */
if (!tbl8_entry->valid_group) {
- struct rte_lpm_tbl_entry_v20 new_tbl8_entry = {
+ struct rte_lpm_tbl_entry new_tbl8_entry = {
+ .next_hop = 0,
.valid = INVALID,
.depth = 0,
.valid_group = VALID,
};
- new_tbl8_entry.next_hop = 0;
memset(&tbl8_entry[0], 0,
RTE_LPM_TBL8_GROUP_NUM_ENTRIES *
}
static int32_t
-tbl8_alloc_v1604(struct rte_lpm_tbl_entry *tbl8, uint32_t number_tbl8s)
+tbl8_alloc(struct rte_lpm *lpm)
{
- uint32_t group_idx; /* tbl8 group index. */
- struct rte_lpm_tbl_entry *tbl8_entry;
+ int32_t group_idx; /* tbl8 group index. */
+ struct __rte_lpm *internal_lpm;
+
+ internal_lpm = container_of(lpm, struct __rte_lpm, lpm);
+ group_idx = _tbl8_alloc(lpm);
+ if (group_idx == -ENOSPC && internal_lpm->dq != NULL) {
+ /* If there are no tbl8 groups try to reclaim one. */
+ if (rte_rcu_qsbr_dq_reclaim(internal_lpm->dq, 1,
+ NULL, NULL, NULL) == 0)
+ group_idx = _tbl8_alloc(lpm);
+ }
- /* Scan through tbl8 to find a free (i.e. INVALID) tbl8 group. */
- for (group_idx = 0; group_idx < number_tbl8s; group_idx++) {
- tbl8_entry = &tbl8[group_idx * RTE_LPM_TBL8_GROUP_NUM_ENTRIES];
- /* If a free tbl8 group is found clean it and set as VALID. */
- if (!tbl8_entry->valid_group) {
- struct rte_lpm_tbl_entry new_tbl8_entry = {
- .next_hop = 0,
- .valid = INVALID,
- .depth = 0,
- .valid_group = VALID,
- };
-
- memset(&tbl8_entry[0], 0,
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES *
- sizeof(tbl8_entry[0]));
-
- __atomic_store(tbl8_entry, &new_tbl8_entry,
- __ATOMIC_RELAXED);
-
- /* Return group index for allocated tbl8 group. */
- return group_idx;
- }
- }
-
- /* If there are no tbl8 groups free then return error. */
- return -ENOSPC;
-}
-
-static void
-tbl8_free_v20(struct rte_lpm_tbl_entry_v20 *tbl8, uint32_t tbl8_group_start)
-{
- /* Set tbl8 group invalid*/
- struct rte_lpm_tbl_entry_v20 zero_tbl8_entry = {
- .valid = INVALID,
- .depth = 0,
- .valid_group = INVALID,
- };
- zero_tbl8_entry.next_hop = 0;
-
- __atomic_store(&tbl8[tbl8_group_start], &zero_tbl8_entry,
- __ATOMIC_RELAXED);
-}
+ return group_idx;
+}
static void
-tbl8_free_v1604(struct rte_lpm_tbl_entry *tbl8, uint32_t tbl8_group_start)
+tbl8_free(struct rte_lpm *lpm, uint32_t tbl8_group_start)
{
- /* Set tbl8 group invalid*/
struct rte_lpm_tbl_entry zero_tbl8_entry = {0};
+ struct __rte_lpm *internal_lpm;
- __atomic_store(&tbl8[tbl8_group_start], &zero_tbl8_entry,
- __ATOMIC_RELAXED);
-}
-
-static __rte_noinline int32_t
-add_depth_small_v20(struct rte_lpm_v20 *lpm, uint32_t ip, uint8_t depth,
- uint8_t next_hop)
-{
- uint32_t tbl24_index, tbl24_range, tbl8_index, tbl8_group_end, i, j;
-
- /* Calculate the index into Table24. */
- tbl24_index = ip >> 8;
- tbl24_range = depth_to_range(depth);
-
- for (i = tbl24_index; i < (tbl24_index + tbl24_range); i++) {
- /*
- * For invalid OR valid and non-extended tbl 24 entries set
- * entry.
- */
- if (!lpm->tbl24[i].valid || (lpm->tbl24[i].valid_group == 0 &&
- lpm->tbl24[i].depth <= depth)) {
-
- struct rte_lpm_tbl_entry_v20 new_tbl24_entry = {
- .valid = VALID,
- .valid_group = 0,
- .depth = depth,
- };
- new_tbl24_entry.next_hop = next_hop;
-
- /* Setting tbl24 entry in one go to avoid race
- * conditions
- */
- __atomic_store(&lpm->tbl24[i], &new_tbl24_entry,
- __ATOMIC_RELEASE);
-
- continue;
- }
-
- if (lpm->tbl24[i].valid_group == 1) {
- /* If tbl24 entry is valid and extended calculate the
- * index into tbl8.
- */
- tbl8_index = lpm->tbl24[i].group_idx *
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
- tbl8_group_end = tbl8_index +
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
-
- for (j = tbl8_index; j < tbl8_group_end; j++) {
- if (!lpm->tbl8[j].valid ||
- lpm->tbl8[j].depth <= depth) {
- struct rte_lpm_tbl_entry_v20
- new_tbl8_entry = {
- .valid = VALID,
- .valid_group = VALID,
- .depth = depth,
- };
- new_tbl8_entry.next_hop = next_hop;
-
- /*
- * Setting tbl8 entry in one go to avoid
- * race conditions
- */
- __atomic_store(&lpm->tbl8[j],
- &new_tbl8_entry,
- __ATOMIC_RELAXED);
-
- continue;
- }
- }
- }
+ internal_lpm = container_of(lpm, struct __rte_lpm, lpm);
+ if (internal_lpm->v == NULL) {
+ /* Set tbl8 group invalid*/
+ __atomic_store(&lpm->tbl8[tbl8_group_start], &zero_tbl8_entry,
+ __ATOMIC_RELAXED);
+ } else if (internal_lpm->rcu_mode == RTE_LPM_QSBR_MODE_SYNC) {
+ /* Wait for quiescent state change. */
+ rte_rcu_qsbr_synchronize(internal_lpm->v,
+ RTE_QSBR_THRID_INVALID);
+ /* Set tbl8 group invalid*/
+ __atomic_store(&lpm->tbl8[tbl8_group_start], &zero_tbl8_entry,
+ __ATOMIC_RELAXED);
+ } else if (internal_lpm->rcu_mode == RTE_LPM_QSBR_MODE_DQ) {
+ /* Push into QSBR defer queue. */
+ rte_rcu_qsbr_dq_enqueue(internal_lpm->dq,
+ (void *)&tbl8_group_start);
}
-
- return 0;
}
static __rte_noinline int32_t
-add_depth_small_v1604(struct rte_lpm *lpm, uint32_t ip, uint8_t depth,
+add_depth_small(struct rte_lpm *lpm, uint32_t ip, uint8_t depth,
uint32_t next_hop)
{
#define group_idx next_hop
}
static __rte_noinline int32_t
-add_depth_big_v20(struct rte_lpm_v20 *lpm, uint32_t ip_masked, uint8_t depth,
- uint8_t next_hop)
-{
- uint32_t tbl24_index;
- int32_t tbl8_group_index, tbl8_group_start, tbl8_group_end, tbl8_index,
- tbl8_range, i;
-
- tbl24_index = (ip_masked >> 8);
- tbl8_range = depth_to_range(depth);
-
- if (!lpm->tbl24[tbl24_index].valid) {
- /* Search for a free tbl8 group. */
- tbl8_group_index = tbl8_alloc_v20(lpm->tbl8);
-
- /* Check tbl8 allocation was successful. */
- if (tbl8_group_index < 0) {
- return tbl8_group_index;
- }
-
- /* Find index into tbl8 and range. */
- tbl8_index = (tbl8_group_index *
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES) +
- (ip_masked & 0xFF);
-
- /* Set tbl8 entry. */
- for (i = tbl8_index; i < (tbl8_index + tbl8_range); i++) {
- struct rte_lpm_tbl_entry_v20 new_tbl8_entry = {
- .valid = VALID,
- .depth = depth,
- .valid_group = lpm->tbl8[i].valid_group,
- };
- new_tbl8_entry.next_hop = next_hop;
- __atomic_store(&lpm->tbl8[i], &new_tbl8_entry,
- __ATOMIC_RELAXED);
- }
-
- /*
- * Update tbl24 entry to point to new tbl8 entry. Note: The
- * ext_flag and tbl8_index need to be updated simultaneously,
- * so assign whole structure in one go
- */
-
- struct rte_lpm_tbl_entry_v20 new_tbl24_entry = {
- .group_idx = (uint8_t)tbl8_group_index,
- .valid = VALID,
- .valid_group = 1,
- .depth = 0,
- };
-
- __atomic_store(&lpm->tbl24[tbl24_index], &new_tbl24_entry,
- __ATOMIC_RELEASE);
-
- } /* If valid entry but not extended calculate the index into Table8. */
- else if (lpm->tbl24[tbl24_index].valid_group == 0) {
- /* Search for free tbl8 group. */
- tbl8_group_index = tbl8_alloc_v20(lpm->tbl8);
-
- if (tbl8_group_index < 0) {
- return tbl8_group_index;
- }
-
- tbl8_group_start = tbl8_group_index *
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
- tbl8_group_end = tbl8_group_start +
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
-
- /* Populate new tbl8 with tbl24 value. */
- for (i = tbl8_group_start; i < tbl8_group_end; i++) {
- struct rte_lpm_tbl_entry_v20 new_tbl8_entry = {
- .valid = VALID,
- .depth = lpm->tbl24[tbl24_index].depth,
- .valid_group = lpm->tbl8[i].valid_group,
- };
- new_tbl8_entry.next_hop =
- lpm->tbl24[tbl24_index].next_hop;
- __atomic_store(&lpm->tbl8[i], &new_tbl8_entry,
- __ATOMIC_RELAXED);
- }
-
- tbl8_index = tbl8_group_start + (ip_masked & 0xFF);
-
- /* Insert new rule into the tbl8 entry. */
- for (i = tbl8_index; i < tbl8_index + tbl8_range; i++) {
- struct rte_lpm_tbl_entry_v20 new_tbl8_entry = {
- .valid = VALID,
- .depth = depth,
- .valid_group = lpm->tbl8[i].valid_group,
- };
- new_tbl8_entry.next_hop = next_hop;
- __atomic_store(&lpm->tbl8[i], &new_tbl8_entry,
- __ATOMIC_RELAXED);
- }
-
- /*
- * Update tbl24 entry to point to new tbl8 entry. Note: The
- * ext_flag and tbl8_index need to be updated simultaneously,
- * so assign whole structure in one go.
- */
-
- struct rte_lpm_tbl_entry_v20 new_tbl24_entry = {
- .group_idx = (uint8_t)tbl8_group_index,
- .valid = VALID,
- .valid_group = 1,
- .depth = 0,
- };
-
- __atomic_store(&lpm->tbl24[tbl24_index], &new_tbl24_entry,
- __ATOMIC_RELEASE);
-
- } else { /*
- * If it is valid, extended entry calculate the index into tbl8.
- */
- tbl8_group_index = lpm->tbl24[tbl24_index].group_idx;
- tbl8_group_start = tbl8_group_index *
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
- tbl8_index = tbl8_group_start + (ip_masked & 0xFF);
-
- for (i = tbl8_index; i < (tbl8_index + tbl8_range); i++) {
-
- if (!lpm->tbl8[i].valid ||
- lpm->tbl8[i].depth <= depth) {
- struct rte_lpm_tbl_entry_v20 new_tbl8_entry = {
- .valid = VALID,
- .depth = depth,
- .valid_group = lpm->tbl8[i].valid_group,
- };
- new_tbl8_entry.next_hop = next_hop;
- /*
- * Setting tbl8 entry in one go to avoid race
- * condition
- */
- __atomic_store(&lpm->tbl8[i], &new_tbl8_entry,
- __ATOMIC_RELAXED);
-
- continue;
- }
- }
- }
-
- return 0;
-}
-
-static __rte_noinline int32_t
-add_depth_big_v1604(struct rte_lpm *lpm, uint32_t ip_masked, uint8_t depth,
+add_depth_big(struct rte_lpm *lpm, uint32_t ip_masked, uint8_t depth,
uint32_t next_hop)
{
#define group_idx next_hop
if (!lpm->tbl24[tbl24_index].valid) {
/* Search for a free tbl8 group. */
- tbl8_group_index = tbl8_alloc_v1604(lpm->tbl8, lpm->number_tbl8s);
+ tbl8_group_index = tbl8_alloc(lpm);
/* Check tbl8 allocation was successful. */
if (tbl8_group_index < 0) {
} /* If valid entry but not extended calculate the index into Table8. */
else if (lpm->tbl24[tbl24_index].valid_group == 0) {
/* Search for free tbl8 group. */
- tbl8_group_index = tbl8_alloc_v1604(lpm->tbl8, lpm->number_tbl8s);
+ tbl8_group_index = tbl8_alloc(lpm);
if (tbl8_group_index < 0) {
return tbl8_group_index;
/*
* Add a route
*/
-int __vsym
-rte_lpm_add_v20(struct rte_lpm_v20 *lpm, uint32_t ip, uint8_t depth,
- uint8_t next_hop)
-{
- int32_t rule_index, status = 0;
- uint32_t ip_masked;
-
- /* Check user arguments. */
- if ((lpm == NULL) || (depth < 1) || (depth > RTE_LPM_MAX_DEPTH))
- return -EINVAL;
-
- ip_masked = ip & depth_to_mask(depth);
-
- /* Add the rule to the rule table. */
- rule_index = rule_add_v20(lpm, ip_masked, depth, next_hop);
-
- /* If the is no space available for new rule return error. */
- if (rule_index < 0) {
- return rule_index;
- }
-
- if (depth <= MAX_DEPTH_TBL24) {
- status = add_depth_small_v20(lpm, ip_masked, depth, next_hop);
- } else { /* If depth > RTE_LPM_MAX_DEPTH_TBL24 */
- status = add_depth_big_v20(lpm, ip_masked, depth, next_hop);
-
- /*
- * If add fails due to exhaustion of tbl8 extensions delete
- * rule that was added to rule table.
- */
- if (status < 0) {
- rule_delete_v20(lpm, rule_index, depth);
-
- return status;
- }
- }
-
- return 0;
-}
-VERSION_SYMBOL(rte_lpm_add, _v20, 2.0);
-
-int __vsym
-rte_lpm_add_v1604(struct rte_lpm *lpm, uint32_t ip, uint8_t depth,
+int
+rte_lpm_add(struct rte_lpm *lpm, uint32_t ip, uint8_t depth,
uint32_t next_hop)
{
int32_t rule_index, status = 0;
ip_masked = ip & depth_to_mask(depth);
/* Add the rule to the rule table. */
- rule_index = rule_add_v1604(lpm, ip_masked, depth, next_hop);
+ rule_index = rule_add(lpm, ip_masked, depth, next_hop);
+
+ /* Skip table entries update if The rule is the same as
+ * the rule in the rules table.
+ */
+ if (rule_index == -EEXIST)
+ return 0;
/* If the is no space available for new rule return error. */
if (rule_index < 0) {
}
if (depth <= MAX_DEPTH_TBL24) {
- status = add_depth_small_v1604(lpm, ip_masked, depth, next_hop);
+ status = add_depth_small(lpm, ip_masked, depth, next_hop);
} else { /* If depth > RTE_LPM_MAX_DEPTH_TBL24 */
- status = add_depth_big_v1604(lpm, ip_masked, depth, next_hop);
+ status = add_depth_big(lpm, ip_masked, depth, next_hop);
/*
* If add fails due to exhaustion of tbl8 extensions delete
* rule that was added to rule table.
*/
if (status < 0) {
- rule_delete_v1604(lpm, rule_index, depth);
+ rule_delete(lpm, rule_index, depth);
return status;
}
return 0;
}
-BIND_DEFAULT_SYMBOL(rte_lpm_add, _v1604, 16.04);
-MAP_STATIC_SYMBOL(int rte_lpm_add(struct rte_lpm *lpm, uint32_t ip,
- uint8_t depth, uint32_t next_hop), rte_lpm_add_v1604);
/*
* Look for a rule in the high-level rules table
- */
-int __vsym
-rte_lpm_is_rule_present_v20(struct rte_lpm_v20 *lpm, uint32_t ip, uint8_t depth,
-uint8_t *next_hop)
-{
- uint32_t ip_masked;
- int32_t rule_index;
-
- /* Check user arguments. */
- if ((lpm == NULL) ||
- (next_hop == NULL) ||
- (depth < 1) || (depth > RTE_LPM_MAX_DEPTH))
- return -EINVAL;
-
- /* Look for the rule using rule_find. */
- ip_masked = ip & depth_to_mask(depth);
- rule_index = rule_find_v20(lpm, ip_masked, depth);
-
- if (rule_index >= 0) {
- *next_hop = lpm->rules_tbl[rule_index].next_hop;
- return 1;
- }
-
- /* If rule is not found return 0. */
- return 0;
-}
-VERSION_SYMBOL(rte_lpm_is_rule_present, _v20, 2.0);
-
-int __vsym
-rte_lpm_is_rule_present_v1604(struct rte_lpm *lpm, uint32_t ip, uint8_t depth,
-uint32_t *next_hop)
-{
- uint32_t ip_masked;
- int32_t rule_index;
-
- /* Check user arguments. */
- if ((lpm == NULL) ||
- (next_hop == NULL) ||
- (depth < 1) || (depth > RTE_LPM_MAX_DEPTH))
- return -EINVAL;
-
- /* Look for the rule using rule_find. */
- ip_masked = ip & depth_to_mask(depth);
- rule_index = rule_find_v1604(lpm, ip_masked, depth);
-
- if (rule_index >= 0) {
- *next_hop = lpm->rules_tbl[rule_index].next_hop;
- return 1;
- }
-
- /* If rule is not found return 0. */
- return 0;
-}
-BIND_DEFAULT_SYMBOL(rte_lpm_is_rule_present, _v1604, 16.04);
-MAP_STATIC_SYMBOL(int rte_lpm_is_rule_present(struct rte_lpm *lpm, uint32_t ip,
- uint8_t depth, uint32_t *next_hop), rte_lpm_is_rule_present_v1604);
-
-static int32_t
-find_previous_rule_v20(struct rte_lpm_v20 *lpm, uint32_t ip, uint8_t depth,
- uint8_t *sub_rule_depth)
-{
- int32_t rule_index;
- uint32_t ip_masked;
- uint8_t prev_depth;
-
- for (prev_depth = (uint8_t)(depth - 1); prev_depth > 0; prev_depth--) {
- ip_masked = ip & depth_to_mask(prev_depth);
-
- rule_index = rule_find_v20(lpm, ip_masked, prev_depth);
-
- if (rule_index >= 0) {
- *sub_rule_depth = prev_depth;
- return rule_index;
- }
- }
-
- return -1;
-}
-
-static int32_t
-find_previous_rule_v1604(struct rte_lpm *lpm, uint32_t ip, uint8_t depth,
- uint8_t *sub_rule_depth)
-{
- int32_t rule_index;
- uint32_t ip_masked;
- uint8_t prev_depth;
-
- for (prev_depth = (uint8_t)(depth - 1); prev_depth > 0; prev_depth--) {
- ip_masked = ip & depth_to_mask(prev_depth);
-
- rule_index = rule_find_v1604(lpm, ip_masked, prev_depth);
-
- if (rule_index >= 0) {
- *sub_rule_depth = prev_depth;
- return rule_index;
- }
- }
-
- return -1;
-}
-
-static int32_t
-delete_depth_small_v20(struct rte_lpm_v20 *lpm, uint32_t ip_masked,
- uint8_t depth, int32_t sub_rule_index, uint8_t sub_rule_depth)
-{
- uint32_t tbl24_range, tbl24_index, tbl8_group_index, tbl8_index, i, j;
-
- /* Calculate the range and index into Table24. */
- tbl24_range = depth_to_range(depth);
- tbl24_index = (ip_masked >> 8);
-
- /*
- * Firstly check the sub_rule_index. A -1 indicates no replacement rule
- * and a positive number indicates a sub_rule_index.
- */
- if (sub_rule_index < 0) {
- /*
- * If no replacement rule exists then invalidate entries
- * associated with this rule.
- */
- for (i = tbl24_index; i < (tbl24_index + tbl24_range); i++) {
-
- if (lpm->tbl24[i].valid_group == 0 &&
- lpm->tbl24[i].depth <= depth) {
- struct rte_lpm_tbl_entry_v20
- zero_tbl24_entry = {
- .valid = INVALID,
- .depth = 0,
- .valid_group = 0,
- };
- zero_tbl24_entry.next_hop = 0;
- __atomic_store(&lpm->tbl24[i],
- &zero_tbl24_entry, __ATOMIC_RELEASE);
- } else if (lpm->tbl24[i].valid_group == 1) {
- /*
- * If TBL24 entry is extended, then there has
- * to be a rule with depth >= 25 in the
- * associated TBL8 group.
- */
-
- tbl8_group_index = lpm->tbl24[i].group_idx;
- tbl8_index = tbl8_group_index *
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
-
- for (j = tbl8_index; j < (tbl8_index +
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES); j++) {
+ */
+int
+rte_lpm_is_rule_present(struct rte_lpm *lpm, uint32_t ip, uint8_t depth,
+uint32_t *next_hop)
+{
+ uint32_t ip_masked;
+ int32_t rule_index;
- if (lpm->tbl8[j].depth <= depth)
- lpm->tbl8[j].valid = INVALID;
- }
- }
- }
- } else {
- /*
- * If a replacement rule exists then modify entries
- * associated with this rule.
- */
+ /* Check user arguments. */
+ if ((lpm == NULL) ||
+ (next_hop == NULL) ||
+ (depth < 1) || (depth > RTE_LPM_MAX_DEPTH))
+ return -EINVAL;
- struct rte_lpm_tbl_entry_v20 new_tbl24_entry = {
- .next_hop = lpm->rules_tbl[sub_rule_index].next_hop,
- .valid = VALID,
- .valid_group = 0,
- .depth = sub_rule_depth,
- };
+ /* Look for the rule using rule_find. */
+ ip_masked = ip & depth_to_mask(depth);
+ rule_index = rule_find(lpm, ip_masked, depth);
- struct rte_lpm_tbl_entry_v20 new_tbl8_entry = {
- .valid = VALID,
- .valid_group = VALID,
- .depth = sub_rule_depth,
- };
- new_tbl8_entry.next_hop =
- lpm->rules_tbl[sub_rule_index].next_hop;
+ if (rule_index >= 0) {
+ *next_hop = lpm->rules_tbl[rule_index].next_hop;
+ return 1;
+ }
- for (i = tbl24_index; i < (tbl24_index + tbl24_range); i++) {
+ /* If rule is not found return 0. */
+ return 0;
+}
- if (lpm->tbl24[i].valid_group == 0 &&
- lpm->tbl24[i].depth <= depth) {
- __atomic_store(&lpm->tbl24[i], &new_tbl24_entry,
- __ATOMIC_RELEASE);
- } else if (lpm->tbl24[i].valid_group == 1) {
- /*
- * If TBL24 entry is extended, then there has
- * to be a rule with depth >= 25 in the
- * associated TBL8 group.
- */
+static int32_t
+find_previous_rule(struct rte_lpm *lpm, uint32_t ip, uint8_t depth,
+ uint8_t *sub_rule_depth)
+{
+ int32_t rule_index;
+ uint32_t ip_masked;
+ uint8_t prev_depth;
- tbl8_group_index = lpm->tbl24[i].group_idx;
- tbl8_index = tbl8_group_index *
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
+ for (prev_depth = (uint8_t)(depth - 1); prev_depth > 0; prev_depth--) {
+ ip_masked = ip & depth_to_mask(prev_depth);
- for (j = tbl8_index; j < (tbl8_index +
- RTE_LPM_TBL8_GROUP_NUM_ENTRIES); j++) {
+ rule_index = rule_find(lpm, ip_masked, prev_depth);
- if (lpm->tbl8[j].depth <= depth)
- __atomic_store(&lpm->tbl8[j],
- &new_tbl8_entry,
- __ATOMIC_RELAXED);
- }
- }
+ if (rule_index >= 0) {
+ *sub_rule_depth = prev_depth;
+ return rule_index;
}
}
- return 0;
+ return -1;
}
static int32_t
-delete_depth_small_v1604(struct rte_lpm *lpm, uint32_t ip_masked,
+delete_depth_small(struct rte_lpm *lpm, uint32_t ip_masked,
uint8_t depth, int32_t sub_rule_index, uint8_t sub_rule_depth)
{
#define group_idx next_hop
* thus can be recycled
*/
static int32_t
-tbl8_recycle_check_v20(struct rte_lpm_tbl_entry_v20 *tbl8,
- uint32_t tbl8_group_start)
-{
- uint32_t tbl8_group_end, i;
- tbl8_group_end = tbl8_group_start + RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
-
- /*
- * Check the first entry of the given tbl8. If it is invalid we know
- * this tbl8 does not contain any rule with a depth < RTE_LPM_MAX_DEPTH
- * (As they would affect all entries in a tbl8) and thus this table
- * can not be recycled.
- */
- if (tbl8[tbl8_group_start].valid) {
- /*
- * If first entry is valid check if the depth is less than 24
- * and if so check the rest of the entries to verify that they
- * are all of this depth.
- */
- if (tbl8[tbl8_group_start].depth <= MAX_DEPTH_TBL24) {
- for (i = (tbl8_group_start + 1); i < tbl8_group_end;
- i++) {
-
- if (tbl8[i].depth !=
- tbl8[tbl8_group_start].depth) {
-
- return -EEXIST;
- }
- }
- /* If all entries are the same return the tb8 index */
- return tbl8_group_start;
- }
-
- return -EEXIST;
- }
- /*
- * If the first entry is invalid check if the rest of the entries in
- * the tbl8 are invalid.
- */
- for (i = (tbl8_group_start + 1); i < tbl8_group_end; i++) {
- if (tbl8[i].valid)
- return -EEXIST;
- }
- /* If no valid entries are found then return -EINVAL. */
- return -EINVAL;
-}
-
-static int32_t
-tbl8_recycle_check_v1604(struct rte_lpm_tbl_entry *tbl8,
+tbl8_recycle_check(struct rte_lpm_tbl_entry *tbl8,
uint32_t tbl8_group_start)
{
uint32_t tbl8_group_end, i;
}
static int32_t
-delete_depth_big_v20(struct rte_lpm_v20 *lpm, uint32_t ip_masked,
- uint8_t depth, int32_t sub_rule_index, uint8_t sub_rule_depth)
-{
- uint32_t tbl24_index, tbl8_group_index, tbl8_group_start, tbl8_index,
- tbl8_range, i;
- int32_t tbl8_recycle_index;
-
- /*
- * Calculate the index into tbl24 and range. Note: All depths larger
- * than MAX_DEPTH_TBL24 are associated with only one tbl24 entry.
- */
- tbl24_index = ip_masked >> 8;
-
- /* Calculate the index into tbl8 and range. */
- tbl8_group_index = lpm->tbl24[tbl24_index].group_idx;
- tbl8_group_start = tbl8_group_index * RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
- tbl8_index = tbl8_group_start + (ip_masked & 0xFF);
- tbl8_range = depth_to_range(depth);
-
- if (sub_rule_index < 0) {
- /*
- * Loop through the range of entries on tbl8 for which the
- * rule_to_delete must be removed or modified.
- */
- for (i = tbl8_index; i < (tbl8_index + tbl8_range); i++) {
- if (lpm->tbl8[i].depth <= depth)
- lpm->tbl8[i].valid = INVALID;
- }
- } else {
- /* Set new tbl8 entry. */
- struct rte_lpm_tbl_entry_v20 new_tbl8_entry = {
- .valid = VALID,
- .depth = sub_rule_depth,
- .valid_group = lpm->tbl8[tbl8_group_start].valid_group,
- };
-
- new_tbl8_entry.next_hop =
- lpm->rules_tbl[sub_rule_index].next_hop;
- /*
- * Loop through the range of entries on tbl8 for which the
- * rule_to_delete must be modified.
- */
- for (i = tbl8_index; i < (tbl8_index + tbl8_range); i++) {
- if (lpm->tbl8[i].depth <= depth)
- __atomic_store(&lpm->tbl8[i], &new_tbl8_entry,
- __ATOMIC_RELAXED);
- }
- }
-
- /*
- * Check if there are any valid entries in this tbl8 group. If all
- * tbl8 entries are invalid we can free the tbl8 and invalidate the
- * associated tbl24 entry.
- */
-
- tbl8_recycle_index = tbl8_recycle_check_v20(lpm->tbl8, tbl8_group_start);
-
- if (tbl8_recycle_index == -EINVAL) {
- /* Set tbl24 before freeing tbl8 to avoid race condition.
- * Prevent the free of the tbl8 group from hoisting.
- */
- lpm->tbl24[tbl24_index].valid = 0;
- __atomic_thread_fence(__ATOMIC_RELEASE);
- tbl8_free_v20(lpm->tbl8, tbl8_group_start);
- } else if (tbl8_recycle_index > -1) {
- /* Update tbl24 entry. */
- struct rte_lpm_tbl_entry_v20 new_tbl24_entry = {
- .next_hop = lpm->tbl8[tbl8_recycle_index].next_hop,
- .valid = VALID,
- .valid_group = 0,
- .depth = lpm->tbl8[tbl8_recycle_index].depth,
- };
-
- /* Set tbl24 before freeing tbl8 to avoid race condition.
- * Prevent the free of the tbl8 group from hoisting.
- */
- __atomic_store(&lpm->tbl24[tbl24_index], &new_tbl24_entry,
- __ATOMIC_RELAXED);
- __atomic_thread_fence(__ATOMIC_RELEASE);
- tbl8_free_v20(lpm->tbl8, tbl8_group_start);
- }
-
- return 0;
-}
-
-static int32_t
-delete_depth_big_v1604(struct rte_lpm *lpm, uint32_t ip_masked,
+delete_depth_big(struct rte_lpm *lpm, uint32_t ip_masked,
uint8_t depth, int32_t sub_rule_index, uint8_t sub_rule_depth)
{
#define group_idx next_hop
* associated tbl24 entry.
*/
- tbl8_recycle_index = tbl8_recycle_check_v1604(lpm->tbl8, tbl8_group_start);
+ tbl8_recycle_index = tbl8_recycle_check(lpm->tbl8, tbl8_group_start);
if (tbl8_recycle_index == -EINVAL) {
/* Set tbl24 before freeing tbl8 to avoid race condition.
*/
lpm->tbl24[tbl24_index].valid = 0;
__atomic_thread_fence(__ATOMIC_RELEASE);
- tbl8_free_v1604(lpm->tbl8, tbl8_group_start);
+ tbl8_free(lpm, tbl8_group_start);
} else if (tbl8_recycle_index > -1) {
/* Update tbl24 entry. */
struct rte_lpm_tbl_entry new_tbl24_entry = {
__atomic_store(&lpm->tbl24[tbl24_index], &new_tbl24_entry,
__ATOMIC_RELAXED);
__atomic_thread_fence(__ATOMIC_RELEASE);
- tbl8_free_v1604(lpm->tbl8, tbl8_group_start);
+ tbl8_free(lpm, tbl8_group_start);
}
#undef group_idx
return 0;
/*
* Deletes a rule
*/
-int __vsym
-rte_lpm_delete_v20(struct rte_lpm_v20 *lpm, uint32_t ip, uint8_t depth)
-{
- int32_t rule_to_delete_index, sub_rule_index;
- uint32_t ip_masked;
- uint8_t sub_rule_depth;
- /*
- * Check input arguments. Note: IP must be a positive integer of 32
- * bits in length therefore it need not be checked.
- */
- if ((lpm == NULL) || (depth < 1) || (depth > RTE_LPM_MAX_DEPTH)) {
- return -EINVAL;
- }
-
- ip_masked = ip & depth_to_mask(depth);
-
- /*
- * Find the index of the input rule, that needs to be deleted, in the
- * rule table.
- */
- rule_to_delete_index = rule_find_v20(lpm, ip_masked, depth);
-
- /*
- * Check if rule_to_delete_index was found. If no rule was found the
- * function rule_find returns -EINVAL.
- */
- if (rule_to_delete_index < 0)
- return -EINVAL;
-
- /* Delete the rule from the rule table. */
- rule_delete_v20(lpm, rule_to_delete_index, depth);
-
- /*
- * Find rule to replace the rule_to_delete. If there is no rule to
- * replace the rule_to_delete we return -1 and invalidate the table
- * entries associated with this rule.
- */
- sub_rule_depth = 0;
- sub_rule_index = find_previous_rule_v20(lpm, ip, depth, &sub_rule_depth);
-
- /*
- * If the input depth value is less than 25 use function
- * delete_depth_small otherwise use delete_depth_big.
- */
- if (depth <= MAX_DEPTH_TBL24) {
- return delete_depth_small_v20(lpm, ip_masked, depth,
- sub_rule_index, sub_rule_depth);
- } else { /* If depth > MAX_DEPTH_TBL24 */
- return delete_depth_big_v20(lpm, ip_masked, depth, sub_rule_index,
- sub_rule_depth);
- }
-}
-VERSION_SYMBOL(rte_lpm_delete, _v20, 2.0);
-
-int __vsym
-rte_lpm_delete_v1604(struct rte_lpm *lpm, uint32_t ip, uint8_t depth)
+int
+rte_lpm_delete(struct rte_lpm *lpm, uint32_t ip, uint8_t depth)
{
int32_t rule_to_delete_index, sub_rule_index;
uint32_t ip_masked;
* Find the index of the input rule, that needs to be deleted, in the
* rule table.
*/
- rule_to_delete_index = rule_find_v1604(lpm, ip_masked, depth);
+ rule_to_delete_index = rule_find(lpm, ip_masked, depth);
/*
* Check if rule_to_delete_index was found. If no rule was found the
return -EINVAL;
/* Delete the rule from the rule table. */
- rule_delete_v1604(lpm, rule_to_delete_index, depth);
+ rule_delete(lpm, rule_to_delete_index, depth);
/*
* Find rule to replace the rule_to_delete. If there is no rule to
* entries associated with this rule.
*/
sub_rule_depth = 0;
- sub_rule_index = find_previous_rule_v1604(lpm, ip, depth, &sub_rule_depth);
+ sub_rule_index = find_previous_rule(lpm, ip, depth, &sub_rule_depth);
/*
* If the input depth value is less than 25 use function
* delete_depth_small otherwise use delete_depth_big.
*/
if (depth <= MAX_DEPTH_TBL24) {
- return delete_depth_small_v1604(lpm, ip_masked, depth,
+ return delete_depth_small(lpm, ip_masked, depth,
sub_rule_index, sub_rule_depth);
} else { /* If depth > MAX_DEPTH_TBL24 */
- return delete_depth_big_v1604(lpm, ip_masked, depth, sub_rule_index,
+ return delete_depth_big(lpm, ip_masked, depth, sub_rule_index,
sub_rule_depth);
}
}
-BIND_DEFAULT_SYMBOL(rte_lpm_delete, _v1604, 16.04);
-MAP_STATIC_SYMBOL(int rte_lpm_delete(struct rte_lpm *lpm, uint32_t ip,
- uint8_t depth), rte_lpm_delete_v1604);
/*
* Delete all rules from the LPM table.
*/
-void __vsym
-rte_lpm_delete_all_v20(struct rte_lpm_v20 *lpm)
-{
- /* Zero rule information. */
- memset(lpm->rule_info, 0, sizeof(lpm->rule_info));
-
- /* Zero tbl24. */
- memset(lpm->tbl24, 0, sizeof(lpm->tbl24));
-
- /* Zero tbl8. */
- memset(lpm->tbl8, 0, sizeof(lpm->tbl8));
-
- /* Delete all rules form the rules table. */
- memset(lpm->rules_tbl, 0, sizeof(lpm->rules_tbl[0]) * lpm->max_rules);
-}
-VERSION_SYMBOL(rte_lpm_delete_all, _v20, 2.0);
-
-void __vsym
-rte_lpm_delete_all_v1604(struct rte_lpm *lpm)
+void
+rte_lpm_delete_all(struct rte_lpm *lpm)
{
/* Zero rule information. */
memset(lpm->rule_info, 0, sizeof(lpm->rule_info));
/* Delete all rules form the rules table. */
memset(lpm->rules_tbl, 0, sizeof(lpm->rules_tbl[0]) * lpm->max_rules);
}
-BIND_DEFAULT_SYMBOL(rte_lpm_delete_all, _v1604, 16.04);
-MAP_STATIC_SYMBOL(void rte_lpm_delete_all(struct rte_lpm *lpm),
- rte_lpm_delete_all_v1604);
git.droids-corp.org / dpdk.git / blobdiff