--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+#include <stdio.h>
+
+#include <rte_common.h>
+#include <rte_mbuf.h>
+#include <rte_malloc.h>
+#include <rte_log.h>
+
+#include "rte_table_acl.h"
+#include <rte_ether.h>
+
+struct rte_table_acl {
+ /* Low-level ACL table */
+ char name[2][RTE_ACL_NAMESIZE];
+ struct rte_acl_param acl_params; /* for creating low level acl table */
+ struct rte_acl_config cfg; /* Holds the field definitions (metadata) */
+ struct rte_acl_ctx *ctx;
+ uint32_t name_id;
+
+ /* Input parameters */
+ uint32_t n_rules;
+ uint32_t entry_size;
+
+ /* Internal tables */
+ uint8_t *action_table;
+ struct rte_acl_rule **acl_rule_list; /* Array of pointers to rules */
+ uint8_t *acl_rule_memory; /* Memory to store the rules */
+
+ /* Memory to store the action table and stack of free entries */
+ uint8_t memory[0] __rte_cache_aligned;
+};
+
+
+static void *
+rte_table_acl_create(
+ void *params,
+ int socket_id,
+ uint32_t entry_size)
+{
+ struct rte_table_acl_params *p = (struct rte_table_acl_params *) params;
+ struct rte_table_acl *acl;
+ uint32_t action_table_size, acl_rule_list_size, acl_rule_memory_size;
+ uint32_t total_size;
+
+ RTE_BUILD_BUG_ON(((sizeof(struct rte_table_acl) % CACHE_LINE_SIZE)
+ != 0));
+
+ /* Check input parameters */
+ if (p == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: Invalid value for params\n", __func__);
+ return NULL;
+ }
+ if (p->name == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: Invalid value for name\n", __func__);
+ return NULL;
+ }
+ if (p->n_rules == 0) {
+ RTE_LOG(ERR, TABLE, "%s: Invalid value for n_rules\n",
+ __func__);
+ return NULL;
+ }
+ if ((p->n_rule_fields == 0) ||
+ (p->n_rule_fields > RTE_ACL_MAX_FIELDS)) {
+ RTE_LOG(ERR, TABLE, "%s: Invalid value for n_rule_fields\n",
+ __func__);
+ return NULL;
+ }
+
+ entry_size = RTE_ALIGN(entry_size, sizeof(uint64_t));
+
+ /* Memory allocation */
+ action_table_size = CACHE_LINE_ROUNDUP(p->n_rules * entry_size);
+ acl_rule_list_size =
+ CACHE_LINE_ROUNDUP(p->n_rules * sizeof(struct rte_acl_rule *));
+ acl_rule_memory_size = CACHE_LINE_ROUNDUP(p->n_rules *
+ RTE_ACL_RULE_SZ(p->n_rule_fields));
+ total_size = sizeof(struct rte_table_acl) + action_table_size +
+ acl_rule_list_size + acl_rule_memory_size;
+
+ acl = rte_zmalloc_socket("TABLE", total_size, CACHE_LINE_SIZE,
+ socket_id);
+ if (acl == NULL) {
+ RTE_LOG(ERR, TABLE,
+ "%s: Cannot allocate %u bytes for ACL table\n",
+ __func__, total_size);
+ return NULL;
+ }
+
+ acl->action_table = &acl->memory[0];
+ acl->acl_rule_list =
+ (struct rte_acl_rule **) &acl->memory[action_table_size];
+ acl->acl_rule_memory = (uint8_t *)
+ &acl->memory[action_table_size + acl_rule_list_size];
+
+ /* Initialization of internal fields */
+ rte_snprintf(acl->name[0], RTE_ACL_NAMESIZE, "%s_a", p->name);
+ rte_snprintf(acl->name[1], RTE_ACL_NAMESIZE, "%s_b", p->name);
+ acl->name_id = 1;
+
+ acl->acl_params.name = acl->name[acl->name_id];
+ acl->acl_params.socket_id = socket_id;
+ acl->acl_params.rule_size = RTE_ACL_RULE_SZ(p->n_rule_fields);
+ acl->acl_params.max_rule_num = p->n_rules;
+
+ acl->cfg.num_categories = 1;
+ acl->cfg.num_fields = p->n_rule_fields;
+ memcpy(&acl->cfg.defs[0], &p->field_format[0],
+ p->n_rule_fields * sizeof(struct rte_acl_field_def));
+
+ acl->ctx = NULL;
+
+ acl->n_rules = p->n_rules;
+ acl->entry_size = entry_size;
+
+ return acl;
+}
+
+static int
+rte_table_acl_free(void *table)
+{
+ struct rte_table_acl *acl = (struct rte_table_acl *) table;
+
+ /* Check input parameters */
+ if (table == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ /* Free previously allocated resources */
+ if (acl->ctx != NULL)
+ rte_acl_free(acl->ctx);
+
+ rte_free(acl);
+
+ return 0;
+}
+
+RTE_ACL_RULE_DEF(rte_pipeline_acl_rule, RTE_ACL_MAX_FIELDS);
+
+static int
+rte_table_acl_build(struct rte_table_acl *acl, struct rte_acl_ctx **acl_ctx)
+{
+ struct rte_acl_ctx *ctx = NULL;
+ uint32_t n_rules, i;
+ int status;
+
+ /* Create low level ACL table */
+ ctx = rte_acl_create(&acl->acl_params);
+ if (ctx == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: Cannot create low level ACL table\n",
+ __func__);
+ return -1;
+ }
+
+ /* Add rules to low level ACL table */
+ n_rules = 0;
+ for (i = 1; i < acl->n_rules; i++) {
+ if (acl->acl_rule_list[i] != NULL) {
+ status = rte_acl_add_rules(ctx, acl->acl_rule_list[i],
+ 1);
+ if (status != 0) {
+ RTE_LOG(ERR, TABLE,
+ "%s: Cannot add rule to low level ACL table\n",
+ __func__);
+ rte_acl_free(ctx);
+ return -1;
+ }
+
+ n_rules++;
+ }
+ }
+
+ if (n_rules == 0) {
+ rte_acl_free(ctx);
+ *acl_ctx = NULL;
+ return 0;
+ }
+
+ /* Build low level ACl table */
+ status = rte_acl_build(ctx, &acl->cfg);
+ if (status != 0) {
+ RTE_LOG(ERR, TABLE,
+ "%s: Cannot build the low level ACL table\n",
+ __func__);
+ rte_acl_free(ctx);
+ return -1;
+ }
+
+ rte_acl_dump(ctx);
+
+ *acl_ctx = ctx;
+ return 0;
+}
+
+static int
+rte_table_acl_entry_add(
+ void *table,
+ void *key,
+ void *entry,
+ int *key_found,
+ void **entry_ptr)
+{
+ struct rte_table_acl *acl = (struct rte_table_acl *) table;
+ struct rte_table_acl_rule_add_params *rule =
+ (struct rte_table_acl_rule_add_params *) key;
+ struct rte_pipeline_acl_rule acl_rule;
+ struct rte_acl_rule *rule_location;
+ struct rte_acl_ctx *ctx;
+ uint32_t free_pos, free_pos_valid, i;
+ int status;
+
+ /* Check input parameters */
+ if (table == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
+ return -EINVAL;
+ }
+ if (key == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: key parameter is NULL\n", __func__);
+ return -EINVAL;
+ }
+ if (entry == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: entry parameter is NULL\n", __func__);
+ return -EINVAL;
+ }
+ if (key_found == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: key_found parameter is NULL\n",
+ __func__);
+ return -EINVAL;
+ }
+ if (entry_ptr == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: entry_ptr parameter is NULL\n",
+ __func__);
+ return -EINVAL;
+ }
+ if (rule->priority > RTE_ACL_MAX_PRIORITY) {
+ RTE_LOG(ERR, TABLE, "%s: Priority is too high\n", __func__);
+ return -EINVAL;
+ }
+
+ /* Setup rule data structure */
+ memset(&acl_rule, 0, sizeof(acl_rule));
+ acl_rule.data.category_mask = 1;
+ acl_rule.data.priority = RTE_ACL_MAX_PRIORITY - rule->priority;
+ acl_rule.data.userdata = 0; /* To be set up later */
+ memcpy(&acl_rule.field[0],
+ &rule->field_value[0],
+ acl->cfg.num_fields * sizeof(struct rte_acl_field));
+
+ /* Look to see if the rule exists already in the table */
+ free_pos = 0;
+ free_pos_valid = 0;
+ for (i = 1; i < acl->n_rules; i++) {
+ if (acl->acl_rule_list[i] == NULL) {
+ if (free_pos_valid == 0) {
+ free_pos = i;
+ free_pos_valid = 1;
+ }
+
+ continue;
+ }
+
+ /* Compare the key fields */
+ status = memcmp(&acl->acl_rule_list[i]->field[0],
+ &rule->field_value[0],
+ acl->cfg.num_fields * sizeof(struct rte_acl_field));
+
+ /* Rule found: update data associated with the rule */
+ if (status == 0) {
+ *key_found = 1;
+ *entry_ptr = &acl->memory[i * acl->entry_size];
+ memcpy(*entry_ptr, entry, acl->entry_size);
+
+ return 0;
+ }
+ }
+
+ /* Return if max rules */
+ if (free_pos_valid == 0) {
+ RTE_LOG(ERR, TABLE, "%s: Max number of rules reached\n",
+ __func__);
+ return -ENOSPC;
+ }
+
+ /* Add the new rule to the rule set */
+ acl_rule.data.userdata = free_pos;
+ rule_location = (struct rte_acl_rule *)
+ &acl->acl_rule_memory[free_pos * acl->acl_params.rule_size];
+ memcpy(rule_location, &acl_rule, acl->acl_params.rule_size);
+ acl->acl_rule_list[free_pos] = rule_location;
+
+ /* Build low level ACL table */
+ acl->name_id ^= 1;
+ acl->acl_params.name = acl->name[acl->name_id];
+ status = rte_table_acl_build(acl, &ctx);
+ if (status != 0) {
+ /* Roll back changes */
+ acl->acl_rule_list[free_pos] = NULL;
+ acl->name_id ^= 1;
+
+ return -EINVAL;
+ }
+
+ /* Commit changes */
+ if (acl->ctx != NULL)
+ rte_acl_free(acl->ctx);
+ acl->ctx = ctx;
+ *key_found = 0;
+ *entry_ptr = &acl->memory[free_pos * acl->entry_size];
+ memcpy(*entry_ptr, entry, acl->entry_size);
+
+ return 0;
+}
+
+static int
+rte_table_acl_entry_delete(
+ void *table,
+ void *key,
+ int *key_found,
+ void *entry)
+{
+ struct rte_table_acl *acl = (struct rte_table_acl *) table;
+ struct rte_table_acl_rule_delete_params *rule =
+ (struct rte_table_acl_rule_delete_params *) key;
+ struct rte_acl_rule *deleted_rule = NULL;
+ struct rte_acl_ctx *ctx;
+ uint32_t pos, pos_valid, i;
+ int status;
+
+ /* Check input parameters */
+ if (table == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
+ return -EINVAL;
+ }
+ if (key == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: key parameter is NULL\n", __func__);
+ return -EINVAL;
+ }
+ if (key_found == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: key_found parameter is NULL\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ /* Look for the rule in the table */
+ pos = 0;
+ pos_valid = 0;
+ for (i = 1; i < acl->n_rules; i++) {
+ if (acl->acl_rule_list[i] != NULL) {
+ /* Compare the key fields */
+ status = memcmp(&acl->acl_rule_list[i]->field[0],
+ &rule->field_value[0], acl->cfg.num_fields *
+ sizeof(struct rte_acl_field));
+
+ /* Rule found: remove from table */
+ if (status == 0) {
+ pos = i;
+ pos_valid = 1;
+
+ deleted_rule = acl->acl_rule_list[i];
+ acl->acl_rule_list[i] = NULL;
+ }
+ }
+ }
+
+ /* Return if rule not found */
+ if (pos_valid == 0) {
+ *key_found = 0;
+ return 0;
+ }
+
+ /* Build low level ACL table */
+ acl->name_id ^= 1;
+ acl->acl_params.name = acl->name[acl->name_id];
+ status = rte_table_acl_build(acl, &ctx);
+ if (status != 0) {
+ /* Roll back changes */
+ acl->acl_rule_list[pos] = deleted_rule;
+ acl->name_id ^= 1;
+
+ return -EINVAL;
+ }
+
+ /* Commit changes */
+ if (acl->ctx != NULL)
+ rte_acl_free(acl->ctx);
+
+ acl->ctx = ctx;
+ *key_found = 1;
+ if (entry != NULL)
+ memcpy(entry, &acl->memory[pos * acl->entry_size],
+ acl->entry_size);
+
+ return 0;
+}
+
+static int
+rte_table_acl_lookup(
+ void *table,
+ struct rte_mbuf **pkts,
+ uint64_t pkts_mask,
+ uint64_t *lookup_hit_mask,
+ void **entries)
+{
+ struct rte_table_acl *acl = (struct rte_table_acl *) table;
+ const uint8_t *pkts_data[RTE_PORT_IN_BURST_SIZE_MAX];
+ uint32_t results[RTE_PORT_IN_BURST_SIZE_MAX];
+ uint64_t pkts_out_mask;
+ uint32_t n_pkts, i, j;
+
+ /* Input conversion */
+ for (i = 0, j = 0; i < (uint32_t)(RTE_PORT_IN_BURST_SIZE_MAX -
+ __builtin_clzll(pkts_mask)); i++) {
+ uint64_t pkt_mask = 1LLU << i;
+
+ if (pkt_mask & pkts_mask) {
+ pkts_data[j] = rte_pktmbuf_mtod(pkts[i], uint8_t *);
+ j++;
+ }
+ }
+ n_pkts = j;
+
+ /* Low-level ACL table lookup */
+ if (acl->ctx != NULL)
+ rte_acl_classify(acl->ctx, pkts_data, results, n_pkts, 1);
+ else
+ n_pkts = 0;
+
+ /* Output conversion */
+ pkts_out_mask = 0;
+ for (i = 0; i < n_pkts; i++) {
+ uint32_t action_table_pos = results[i];
+ uint32_t pkt_pos = __builtin_ctzll(pkts_mask);
+ uint64_t pkt_mask = 1LLU << pkt_pos;
+
+ pkts_mask &= ~pkt_mask;
+
+ if (action_table_pos != RTE_ACL_INVALID_USERDATA) {
+ pkts_out_mask |= pkt_mask;
+ entries[pkt_pos] = (void *)
+ &acl->memory[action_table_pos *
+ acl->entry_size];
+ rte_prefetch0(entries[pkt_pos]);
+ }
+ }
+
+ *lookup_hit_mask = pkts_out_mask;
+
+ return 0;
+}
+
+struct rte_table_ops rte_table_acl_ops = {
+ .f_create = rte_table_acl_create,
+ .f_free = rte_table_acl_free,
+ .f_add = rte_table_acl_entry_add,
+ .f_delete = rte_table_acl_entry_delete,
+ .f_lookup = rte_table_acl_lookup,
+};
--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __INCLUDE_RTE_TABLE_ACL_H__
+#define __INCLUDE_RTE_TABLE_ACL_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @file
+ * RTE Table ACL
+ *
+ * This table uses the Access Control List (ACL) algorithm to uniquely
+ * associate data to lookup keys.
+ *
+ * Use-cases: Firewall rule database, etc.
+ *
+ ***/
+
+#include <stdint.h>
+
+#include "rte_acl.h"
+
+#include "rte_table.h"
+
+/** ACL table parameters */
+struct rte_table_acl_params {
+ /** Name */
+ const char *name;
+
+ /** Maximum number of ACL rules in the table */
+ uint32_t n_rules;
+
+ /** Number of fields in the ACL rule specification */
+ uint32_t n_rule_fields;
+
+ /** Format specification of the fields of the ACL rule */
+ struct rte_acl_field_def field_format[RTE_ACL_MAX_FIELDS];
+};
+
+/** ACL rule specification for entry add operation */
+struct rte_table_acl_rule_add_params {
+ /** ACL rule priority, with 0 as the highest priority */
+ int32_t priority;
+
+ /** Values for the fields of the ACL rule to be added to the table */
+ struct rte_acl_field field_value[RTE_ACL_MAX_FIELDS];
+};
+
+/** ACL rule specification for entry delete operation */
+struct rte_table_acl_rule_delete_params {
+ /** Values for the fields of the ACL rule to be deleted from table */
+ struct rte_acl_field field_value[RTE_ACL_MAX_FIELDS];
+};
+
+/** ACL table operations */
+extern struct rte_table_ops rte_table_acl_ops;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
git.droids-corp.org / dpdk.git / commitdiff