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Diffstat (limited to 'src/dpdk_lib18/librte_table/rte_table_lpm.c')
-rwxr-xr-xsrc/dpdk_lib18/librte_table/rte_table_lpm.c348
1 files changed, 0 insertions, 348 deletions
diff --git a/src/dpdk_lib18/librte_table/rte_table_lpm.c b/src/dpdk_lib18/librte_table/rte_table_lpm.c
deleted file mode 100755
index 64c684d0..00000000
--- a/src/dpdk_lib18/librte_table/rte_table_lpm.c
+++ /dev/null
@@ -1,348 +0,0 @@
-/*-
- * 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_memory.h>
-#include <rte_malloc.h>
-#include <rte_byteorder.h>
-#include <rte_log.h>
-#include <rte_lpm.h>
-
-#include "rte_table_lpm.h"
-
-#define RTE_TABLE_LPM_MAX_NEXT_HOPS 256
-
-struct rte_table_lpm {
- /* Input parameters */
- uint32_t entry_size;
- uint32_t entry_unique_size;
- uint32_t n_rules;
- uint32_t offset;
-
- /* Handle to low-level LPM table */
- struct rte_lpm *lpm;
-
- /* Next Hop Table (NHT) */
- uint32_t nht_users[RTE_TABLE_LPM_MAX_NEXT_HOPS];
- uint8_t nht[0] __rte_cache_aligned;
-};
-
-static void *
-rte_table_lpm_create(void *params, int socket_id, uint32_t entry_size)
-{
- struct rte_table_lpm_params *p = (struct rte_table_lpm_params *) params;
- struct rte_table_lpm *lpm;
- uint32_t total_size, nht_size;
-
- /* Check input parameters */
- if (p == NULL) {
- RTE_LOG(ERR, TABLE, "%s: NULL input parameters\n", __func__);
- return NULL;
- }
- if (p->n_rules == 0) {
- RTE_LOG(ERR, TABLE, "%s: Invalid n_rules\n", __func__);
- return NULL;
- }
- if (p->entry_unique_size == 0) {
- RTE_LOG(ERR, TABLE, "%s: Invalid entry_unique_size\n",
- __func__);
- return NULL;
- }
- if (p->entry_unique_size > entry_size) {
- RTE_LOG(ERR, TABLE, "%s: Invalid entry_unique_size\n",
- __func__);
- return NULL;
- }
- if ((p->offset & 0x3) != 0) {
- RTE_LOG(ERR, TABLE, "%s: Invalid offset\n", __func__);
- return NULL;
- }
-
- entry_size = RTE_ALIGN(entry_size, sizeof(uint64_t));
-
- /* Memory allocation */
- nht_size = RTE_TABLE_LPM_MAX_NEXT_HOPS * entry_size;
- total_size = sizeof(struct rte_table_lpm) + nht_size;
- lpm = rte_zmalloc_socket("TABLE", total_size, RTE_CACHE_LINE_SIZE,
- socket_id);
- if (lpm == NULL) {
- RTE_LOG(ERR, TABLE,
- "%s: Cannot allocate %u bytes for LPM table\n",
- __func__, total_size);
- return NULL;
- }
-
- /* LPM low-level table creation */
- lpm->lpm = rte_lpm_create("LPM", socket_id, p->n_rules, 0);
- if (lpm->lpm == NULL) {
- rte_free(lpm);
- RTE_LOG(ERR, TABLE, "Unable to create low-level LPM table\n");
- return NULL;
- }
-
- /* Memory initialization */
- lpm->entry_size = entry_size;
- lpm->entry_unique_size = p->entry_unique_size;
- lpm->n_rules = p->n_rules;
- lpm->offset = p->offset;
-
- return lpm;
-}
-
-static int
-rte_table_lpm_free(void *table)
-{
- struct rte_table_lpm *lpm = (struct rte_table_lpm *) table;
-
- /* Check input parameters */
- if (lpm == NULL) {
- RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
- return -EINVAL;
- }
-
- /* Free previously allocated resources */
- rte_lpm_free(lpm->lpm);
- rte_free(lpm);
-
- return 0;
-}
-
-static int
-nht_find_free(struct rte_table_lpm *lpm, uint32_t *pos)
-{
- uint32_t i;
-
- for (i = 0; i < RTE_TABLE_LPM_MAX_NEXT_HOPS; i++) {
- if (lpm->nht_users[i] == 0) {
- *pos = i;
- return 1;
- }
- }
-
- return 0;
-}
-
-static int
-nht_find_existing(struct rte_table_lpm *lpm, void *entry, uint32_t *pos)
-{
- uint32_t i;
-
- for (i = 0; i < RTE_TABLE_LPM_MAX_NEXT_HOPS; i++) {
- uint8_t *nht_entry = &lpm->nht[i * lpm->entry_size];
-
- if ((lpm->nht_users[i] > 0) && (memcmp(nht_entry, entry,
- lpm->entry_unique_size) == 0)) {
- *pos = i;
- return 1;
- }
- }
-
- return 0;
-}
-
-static int
-rte_table_lpm_entry_add(
- void *table,
- void *key,
- void *entry,
- int *key_found,
- void **entry_ptr)
-{
- struct rte_table_lpm *lpm = (struct rte_table_lpm *) table;
- struct rte_table_lpm_key *ip_prefix = (struct rte_table_lpm_key *) key;
- uint32_t nht_pos, nht_pos0_valid;
- int status;
- uint8_t nht_pos0 = 0;
-
- /* Check input parameters */
- if (lpm == NULL) {
- RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
- return -EINVAL;
- }
- if (ip_prefix == NULL) {
- RTE_LOG(ERR, TABLE, "%s: ip_prefix parameter is NULL\n",
- __func__);
- return -EINVAL;
- }
- if (entry == NULL) {
- RTE_LOG(ERR, TABLE, "%s: entry parameter is NULL\n", __func__);
- return -EINVAL;
- }
-
- if ((ip_prefix->depth == 0) || (ip_prefix->depth > 32)) {
- RTE_LOG(ERR, TABLE, "%s: invalid depth (%d)\n",
- __func__, ip_prefix->depth);
- return -EINVAL;
- }
-
- /* Check if rule is already present in the table */
- status = rte_lpm_is_rule_present(lpm->lpm, ip_prefix->ip,
- ip_prefix->depth, &nht_pos0);
- nht_pos0_valid = status > 0;
-
- /* Find existing or free NHT entry */
- if (nht_find_existing(lpm, entry, &nht_pos) == 0) {
- uint8_t *nht_entry;
-
- if (nht_find_free(lpm, &nht_pos) == 0) {
- RTE_LOG(ERR, TABLE, "%s: NHT full\n", __func__);
- return -1;
- }
-
- nht_entry = &lpm->nht[nht_pos * lpm->entry_size];
- memcpy(nht_entry, entry, lpm->entry_size);
- }
-
- /* Add rule to low level LPM table */
- if (rte_lpm_add(lpm->lpm, ip_prefix->ip, ip_prefix->depth,
- (uint8_t) nht_pos) < 0) {
- RTE_LOG(ERR, TABLE, "%s: LPM rule add failed\n", __func__);
- return -1;
- }
-
- /* Commit NHT changes */
- lpm->nht_users[nht_pos]++;
- lpm->nht_users[nht_pos0] -= nht_pos0_valid;
-
- *key_found = nht_pos0_valid;
- *entry_ptr = (void *) &lpm->nht[nht_pos * lpm->entry_size];
- return 0;
-}
-
-static int
-rte_table_lpm_entry_delete(
- void *table,
- void *key,
- int *key_found,
- void *entry)
-{
- struct rte_table_lpm *lpm = (struct rte_table_lpm *) table;
- struct rte_table_lpm_key *ip_prefix = (struct rte_table_lpm_key *) key;
- uint8_t nht_pos;
- int status;
-
- /* Check input parameters */
- if (lpm == NULL) {
- RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
- return -EINVAL;
- }
- if (ip_prefix == NULL) {
- RTE_LOG(ERR, TABLE, "%s: ip_prefix parameter is NULL\n",
- __func__);
- return -EINVAL;
- }
- if ((ip_prefix->depth == 0) || (ip_prefix->depth > 32)) {
- RTE_LOG(ERR, TABLE, "%s: invalid depth (%d)\n", __func__,
- ip_prefix->depth);
- return -EINVAL;
- }
-
- /* Return if rule is not present in the table */
- status = rte_lpm_is_rule_present(lpm->lpm, ip_prefix->ip,
- ip_prefix->depth, &nht_pos);
- if (status < 0) {
- RTE_LOG(ERR, TABLE, "%s: LPM algorithmic error\n", __func__);
- return -1;
- }
- if (status == 0) {
- *key_found = 0;
- return 0;
- }
-
- /* Delete rule from the low-level LPM table */
- status = rte_lpm_delete(lpm->lpm, ip_prefix->ip, ip_prefix->depth);
- if (status) {
- RTE_LOG(ERR, TABLE, "%s: LPM rule delete failed\n", __func__);
- return -1;
- }
-
- /* Commit NHT changes */
- lpm->nht_users[nht_pos]--;
-
- *key_found = 1;
- if (entry)
- memcpy(entry, &lpm->nht[nht_pos * lpm->entry_size],
- lpm->entry_size);
-
- return 0;
-}
-
-static int
-rte_table_lpm_lookup(
- void *table,
- struct rte_mbuf **pkts,
- uint64_t pkts_mask,
- uint64_t *lookup_hit_mask,
- void **entries)
-{
- struct rte_table_lpm *lpm = (struct rte_table_lpm *) table;
- uint64_t pkts_out_mask = 0;
- uint32_t i;
-
- pkts_out_mask = 0;
- for (i = 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) {
- struct rte_mbuf *pkt = pkts[i];
- uint32_t ip = rte_bswap32(
- RTE_MBUF_METADATA_UINT32(pkt, lpm->offset));
- int status;
- uint8_t nht_pos;
-
- status = rte_lpm_lookup(lpm->lpm, ip, &nht_pos);
- if (status == 0) {
- pkts_out_mask |= pkt_mask;
- entries[i] = (void *) &lpm->nht[nht_pos *
- lpm->entry_size];
- }
- }
- }
-
- *lookup_hit_mask = pkts_out_mask;
-
- return 0;
-}
-
-struct rte_table_ops rte_table_lpm_ops = {
- .f_create = rte_table_lpm_create,
- .f_free = rte_table_lpm_free,
- .f_add = rte_table_lpm_entry_add,
- .f_delete = rte_table_lpm_entry_delete,
- .f_lookup = rte_table_lpm_lookup,
-};