--- /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_memory.h>
+#include <rte_malloc.h>
+#include <rte_log.h>
+
+#include "rte_table_hash.h"
+#include "rte_lru.h"
+
+#define RTE_TABLE_HASH_KEY_SIZE 32
+
+#define RTE_BUCKET_ENTRY_VALID 0x1LLU
+
+#ifdef RTE_TABLE_STATS_COLLECT
+
+#define RTE_TABLE_HASH_KEY32_STATS_PKTS_IN_ADD(table, val) \
+ table->stats.n_pkts_in += val
+#define RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(table, val) \
+ table->stats.n_pkts_lookup_miss += val
+
+#else
+
+#define RTE_TABLE_HASH_KEY32_STATS_PKTS_IN_ADD(table, val)
+#define RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(table, val)
+
+#endif
+
+struct rte_bucket_4_32 {
+ /* Cache line 0 */
+ uint64_t signature[4 + 1];
+ uint64_t lru_list;
+ struct rte_bucket_4_32 *next;
+ uint64_t next_valid;
+
+ /* Cache lines 1 and 2 */
+ uint64_t key[4][4];
+
+ /* Cache line 3 */
+ uint8_t data[0];
+};
+
+struct rte_table_hash {
+ struct rte_table_stats stats;
+
+ /* Input parameters */
+ uint32_t n_buckets;
+ uint32_t n_entries_per_bucket;
+ uint32_t key_size;
+ uint32_t entry_size;
+ uint32_t bucket_size;
+ uint32_t signature_offset;
+ uint32_t key_offset;
+ rte_table_hash_op_hash f_hash;
+ uint64_t seed;
+
+ /* Extendible buckets */
+ uint32_t n_buckets_ext;
+ uint32_t stack_pos;
+ uint32_t *stack;
+
+ /* Lookup table */
+ uint8_t memory[0] __rte_cache_aligned;
+};
+
+static int
+check_params_create_lru(struct rte_table_hash_key32_lru_params *params) {
+ /* n_entries */
+ if (params->n_entries == 0) {
+ RTE_LOG(ERR, TABLE, "%s: n_entries is zero\n", __func__);
+ return -EINVAL;
+ }
+
+ /* f_hash */
+ if (params->f_hash == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: f_hash function pointer is NULL\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void *
+rte_table_hash_create_key32_lru(void *params,
+ int socket_id,
+ uint32_t entry_size)
+{
+ struct rte_table_hash_key32_lru_params *p =
+ (struct rte_table_hash_key32_lru_params *) params;
+ struct rte_table_hash *f;
+ uint32_t n_buckets, n_entries_per_bucket, key_size, bucket_size_cl;
+ uint32_t total_size, i;
+
+ /* Check input parameters */
+ if ((check_params_create_lru(p) != 0) ||
+ ((sizeof(struct rte_table_hash) % RTE_CACHE_LINE_SIZE) != 0) ||
+ ((sizeof(struct rte_bucket_4_32) % RTE_CACHE_LINE_SIZE) != 0)) {
+ return NULL;
+ }
+ n_entries_per_bucket = 4;
+ key_size = 32;
+
+ /* Memory allocation */
+ n_buckets = rte_align32pow2((p->n_entries + n_entries_per_bucket - 1) /
+ n_entries_per_bucket);
+ bucket_size_cl = (sizeof(struct rte_bucket_4_32) + n_entries_per_bucket
+ * entry_size + RTE_CACHE_LINE_SIZE - 1) / RTE_CACHE_LINE_SIZE;
+ total_size = sizeof(struct rte_table_hash) + n_buckets *
+ bucket_size_cl * RTE_CACHE_LINE_SIZE;
+
+ f = rte_zmalloc_socket("TABLE", total_size, RTE_CACHE_LINE_SIZE, socket_id);
+ if (f == NULL) {
+ RTE_LOG(ERR, TABLE,
+ "%s: Cannot allocate %u bytes for hash table\n",
+ __func__, total_size);
+ return NULL;
+ }
+ RTE_LOG(INFO, TABLE,
+ "%s: Hash table memory footprint is %u bytes\n", __func__,
+ total_size);
+
+ /* Memory initialization */
+ f->n_buckets = n_buckets;
+ f->n_entries_per_bucket = n_entries_per_bucket;
+ f->key_size = key_size;
+ f->entry_size = entry_size;
+ f->bucket_size = bucket_size_cl * RTE_CACHE_LINE_SIZE;
+ f->signature_offset = p->signature_offset;
+ f->key_offset = p->key_offset;
+ f->f_hash = p->f_hash;
+ f->seed = p->seed;
+
+ for (i = 0; i < n_buckets; i++) {
+ struct rte_bucket_4_32 *bucket;
+
+ bucket = (struct rte_bucket_4_32 *) &f->memory[i *
+ f->bucket_size];
+ bucket->lru_list = 0x0000000100020003LLU;
+ }
+
+ return f;
+}
+
+static int
+rte_table_hash_free_key32_lru(void *table)
+{
+ struct rte_table_hash *f = (struct rte_table_hash *) table;
+
+ /* Check input parameters */
+ if (f == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ rte_free(f);
+ return 0;
+}
+
+static int
+rte_table_hash_entry_add_key32_lru(
+ void *table,
+ void *key,
+ void *entry,
+ int *key_found,
+ void **entry_ptr)
+{
+ struct rte_table_hash *f = (struct rte_table_hash *) table;
+ struct rte_bucket_4_32 *bucket;
+ uint64_t signature, pos;
+ uint32_t bucket_index, i;
+
+ signature = f->f_hash(key, f->key_size, f->seed);
+ bucket_index = signature & (f->n_buckets - 1);
+ bucket = (struct rte_bucket_4_32 *)
+ &f->memory[bucket_index * f->bucket_size];
+ signature |= RTE_BUCKET_ENTRY_VALID;
+
+ /* Key is present in the bucket */
+ for (i = 0; i < 4; i++) {
+ uint64_t bucket_signature = bucket->signature[i];
+ uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+
+ if ((bucket_signature == signature) &&
+ (memcmp(key, bucket_key, f->key_size) == 0)) {
+ uint8_t *bucket_data = &bucket->data[i * f->entry_size];
+
+ memcpy(bucket_data, entry, f->entry_size);
+ lru_update(bucket, i);
+ *key_found = 1;
+ *entry_ptr = (void *) bucket_data;
+ return 0;
+ }
+ }
+
+ /* Key is not present in the bucket */
+ for (i = 0; i < 4; i++) {
+ uint64_t bucket_signature = bucket->signature[i];
+ uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+
+ if (bucket_signature == 0) {
+ uint8_t *bucket_data = &bucket->data[i * f->entry_size];
+
+ bucket->signature[i] = signature;
+ memcpy(bucket_key, key, f->key_size);
+ memcpy(bucket_data, entry, f->entry_size);
+ lru_update(bucket, i);
+ *key_found = 0;
+ *entry_ptr = (void *) bucket_data;
+
+ return 0;
+ }
+ }
+
+ /* Bucket full: replace LRU entry */
+ pos = lru_pos(bucket);
+ bucket->signature[pos] = signature;
+ memcpy(bucket->key[pos], key, f->key_size);
+ memcpy(&bucket->data[pos * f->entry_size], entry, f->entry_size);
+ lru_update(bucket, pos);
+ *key_found = 0;
+ *entry_ptr = (void *) &bucket->data[pos * f->entry_size];
+
+ return 0;
+}
+
+static int
+rte_table_hash_entry_delete_key32_lru(
+ void *table,
+ void *key,
+ int *key_found,
+ void *entry)
+{
+ struct rte_table_hash *f = (struct rte_table_hash *) table;
+ struct rte_bucket_4_32 *bucket;
+ uint64_t signature;
+ uint32_t bucket_index, i;
+
+ signature = f->f_hash(key, f->key_size, f->seed);
+ bucket_index = signature & (f->n_buckets - 1);
+ bucket = (struct rte_bucket_4_32 *)
+ &f->memory[bucket_index * f->bucket_size];
+ signature |= RTE_BUCKET_ENTRY_VALID;
+
+ /* Key is present in the bucket */
+ for (i = 0; i < 4; i++) {
+ uint64_t bucket_signature = bucket->signature[i];
+ uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+
+ if ((bucket_signature == signature) &&
+ (memcmp(key, bucket_key, f->key_size) == 0)) {
+ uint8_t *bucket_data = &bucket->data[i * f->entry_size];
+
+ bucket->signature[i] = 0;
+ *key_found = 1;
+ if (entry)
+ memcpy(entry, bucket_data, f->entry_size);
+
+ return 0;
+ }
+ }
+
+ /* Key is not present in the bucket */
+ *key_found = 0;
+ return 0;
+}
+
+static int
+check_params_create_ext(struct rte_table_hash_key32_ext_params *params) {
+ /* n_entries */
+ if (params->n_entries == 0) {
+ RTE_LOG(ERR, TABLE, "%s: n_entries is zero\n", __func__);
+ return -EINVAL;
+ }
+
+ /* n_entries_ext */
+ if (params->n_entries_ext == 0) {
+ RTE_LOG(ERR, TABLE, "%s: n_entries_ext is zero\n", __func__);
+ return -EINVAL;
+ }
+
+ /* f_hash */
+ if (params->f_hash == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: f_hash function pointer is NULL\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void *
+rte_table_hash_create_key32_ext(void *params,
+ int socket_id,
+ uint32_t entry_size)
+{
+ struct rte_table_hash_key32_ext_params *p =
+ (struct rte_table_hash_key32_ext_params *) params;
+ struct rte_table_hash *f;
+ uint32_t n_buckets, n_buckets_ext, n_entries_per_bucket;
+ uint32_t key_size, bucket_size_cl, stack_size_cl, total_size, i;
+
+ /* Check input parameters */
+ if ((check_params_create_ext(p) != 0) ||
+ ((sizeof(struct rte_table_hash) % RTE_CACHE_LINE_SIZE) != 0) ||
+ ((sizeof(struct rte_bucket_4_32) % RTE_CACHE_LINE_SIZE) != 0))
+ return NULL;
+
+ n_entries_per_bucket = 4;
+ key_size = 32;
+
+ /* Memory allocation */
+ n_buckets = rte_align32pow2((p->n_entries + n_entries_per_bucket - 1) /
+ n_entries_per_bucket);
+ n_buckets_ext = (p->n_entries_ext + n_entries_per_bucket - 1) /
+ n_entries_per_bucket;
+ bucket_size_cl = (sizeof(struct rte_bucket_4_32) + n_entries_per_bucket
+ * entry_size + RTE_CACHE_LINE_SIZE - 1) / RTE_CACHE_LINE_SIZE;
+ stack_size_cl = (n_buckets_ext * sizeof(uint32_t) + RTE_CACHE_LINE_SIZE - 1)
+ / RTE_CACHE_LINE_SIZE;
+ total_size = sizeof(struct rte_table_hash) +
+ ((n_buckets + n_buckets_ext) * bucket_size_cl + stack_size_cl) *
+ RTE_CACHE_LINE_SIZE;
+
+ f = rte_zmalloc_socket("TABLE", total_size, RTE_CACHE_LINE_SIZE, socket_id);
+ if (f == NULL) {
+ RTE_LOG(ERR, TABLE,
+ "%s: Cannot allocate %u bytes for hash table\n",
+ __func__, total_size);
+ return NULL;
+ }
+ RTE_LOG(INFO, TABLE,
+ "%s: Hash table memory footprint is %u bytes\n", __func__,
+ total_size);
+
+ /* Memory initialization */
+ f->n_buckets = n_buckets;
+ f->n_entries_per_bucket = n_entries_per_bucket;
+ f->key_size = key_size;
+ f->entry_size = entry_size;
+ f->bucket_size = bucket_size_cl * RTE_CACHE_LINE_SIZE;
+ f->signature_offset = p->signature_offset;
+ f->key_offset = p->key_offset;
+ f->f_hash = p->f_hash;
+ f->seed = p->seed;
+
+ f->n_buckets_ext = n_buckets_ext;
+ f->stack_pos = n_buckets_ext;
+ f->stack = (uint32_t *)
+ &f->memory[(n_buckets + n_buckets_ext) * f->bucket_size];
+
+ for (i = 0; i < n_buckets_ext; i++)
+ f->stack[i] = i;
+
+ return f;
+}
+
+static int
+rte_table_hash_free_key32_ext(void *table)
+{
+ struct rte_table_hash *f = (struct rte_table_hash *) table;
+
+ /* Check input parameters */
+ if (f == NULL) {
+ RTE_LOG(ERR, TABLE, "%s: table parameter is NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ rte_free(f);
+ return 0;
+}
+
+static int
+rte_table_hash_entry_add_key32_ext(
+ void *table,
+ void *key,
+ void *entry,
+ int *key_found,
+ void **entry_ptr)
+{
+ struct rte_table_hash *f = (struct rte_table_hash *) table;
+ struct rte_bucket_4_32 *bucket0, *bucket, *bucket_prev;
+ uint64_t signature;
+ uint32_t bucket_index, i;
+
+ signature = f->f_hash(key, f->key_size, f->seed);
+ bucket_index = signature & (f->n_buckets - 1);
+ bucket0 = (struct rte_bucket_4_32 *)
+ &f->memory[bucket_index * f->bucket_size];
+ signature |= RTE_BUCKET_ENTRY_VALID;
+
+ /* Key is present in the bucket */
+ for (bucket = bucket0; bucket != NULL; bucket = bucket->next) {
+ for (i = 0; i < 4; i++) {
+ uint64_t bucket_signature = bucket->signature[i];
+ uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+
+ if ((bucket_signature == signature) &&
+ (memcmp(key, bucket_key, f->key_size) == 0)) {
+ uint8_t *bucket_data = &bucket->data[i *
+ f->entry_size];
+
+ memcpy(bucket_data, entry, f->entry_size);
+ *key_found = 1;
+ *entry_ptr = (void *) bucket_data;
+
+ return 0;
+ }
+ }
+ }
+
+ /* Key is not present in the bucket */
+ for (bucket_prev = NULL, bucket = bucket0; bucket != NULL;
+ bucket_prev = bucket, bucket = bucket->next)
+ for (i = 0; i < 4; i++) {
+ uint64_t bucket_signature = bucket->signature[i];
+ uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+
+ if (bucket_signature == 0) {
+ uint8_t *bucket_data = &bucket->data[i *
+ f->entry_size];
+
+ bucket->signature[i] = signature;
+ memcpy(bucket_key, key, f->key_size);
+ memcpy(bucket_data, entry, f->entry_size);
+ *key_found = 0;
+ *entry_ptr = (void *) bucket_data;
+
+ return 0;
+ }
+ }
+
+ /* Bucket full: extend bucket */
+ if (f->stack_pos > 0) {
+ bucket_index = f->stack[--f->stack_pos];
+
+ bucket = (struct rte_bucket_4_32 *)
+ &f->memory[(f->n_buckets + bucket_index) *
+ f->bucket_size];
+ bucket_prev->next = bucket;
+ bucket_prev->next_valid = 1;
+
+ bucket->signature[0] = signature;
+ memcpy(bucket->key[0], key, f->key_size);
+ memcpy(&bucket->data[0], entry, f->entry_size);
+ *key_found = 0;
+ *entry_ptr = (void *) &bucket->data[0];
+ return 0;
+ }
+
+ return -ENOSPC;
+}
+
+static int
+rte_table_hash_entry_delete_key32_ext(
+ void *table,
+ void *key,
+ int *key_found,
+ void *entry)
+{
+ struct rte_table_hash *f = (struct rte_table_hash *) table;
+ struct rte_bucket_4_32 *bucket0, *bucket, *bucket_prev;
+ uint64_t signature;
+ uint32_t bucket_index, i;
+
+ signature = f->f_hash(key, f->key_size, f->seed);
+ bucket_index = signature & (f->n_buckets - 1);
+ bucket0 = (struct rte_bucket_4_32 *)
+ &f->memory[bucket_index * f->bucket_size];
+ signature |= RTE_BUCKET_ENTRY_VALID;
+
+ /* Key is present in the bucket */
+ for (bucket_prev = NULL, bucket = bucket0; bucket != NULL;
+ bucket_prev = bucket, bucket = bucket->next)
+ for (i = 0; i < 4; i++) {
+ uint64_t bucket_signature = bucket->signature[i];
+ uint8_t *bucket_key = (uint8_t *) bucket->key[i];
+
+ if ((bucket_signature == signature) &&
+ (memcmp(key, bucket_key, f->key_size) == 0)) {
+ uint8_t *bucket_data = &bucket->data[i *
+ f->entry_size];
+
+ bucket->signature[i] = 0;
+ *key_found = 1;
+ if (entry)
+ memcpy(entry, bucket_data,
+ f->entry_size);
+
+ if ((bucket->signature[0] == 0) &&
+ (bucket->signature[1] == 0) &&
+ (bucket->signature[2] == 0) &&
+ (bucket->signature[3] == 0) &&
+ (bucket_prev != NULL)) {
+ bucket_prev->next = bucket->next;
+ bucket_prev->next_valid =
+ bucket->next_valid;
+
+ memset(bucket, 0,
+ sizeof(struct rte_bucket_4_32));
+ bucket_index = (((uint8_t *)bucket -
+ (uint8_t *)f->memory)/f->bucket_size) - f->n_buckets;
+ f->stack[f->stack_pos++] = bucket_index;
+ }
+
+ return 0;
+ }
+ }
+
+ /* Key is not present in the bucket */
+ *key_found = 0;
+ return 0;
+}
+
+#define lookup_key32_cmp(key_in, bucket, pos) \
+{ \
+ uint64_t xor[4][4], or[4], signature[4]; \
+ \
+ signature[0] = ((~bucket->signature[0]) & 1); \
+ signature[1] = ((~bucket->signature[1]) & 1); \
+ signature[2] = ((~bucket->signature[2]) & 1); \
+ signature[3] = ((~bucket->signature[3]) & 1); \
+ \
+ xor[0][0] = key_in[0] ^ bucket->key[0][0]; \
+ xor[0][1] = key_in[1] ^ bucket->key[0][1]; \
+ xor[0][2] = key_in[2] ^ bucket->key[0][2]; \
+ xor[0][3] = key_in[3] ^ bucket->key[0][3]; \
+ \
+ xor[1][0] = key_in[0] ^ bucket->key[1][0]; \
+ xor[1][1] = key_in[1] ^ bucket->key[1][1]; \
+ xor[1][2] = key_in[2] ^ bucket->key[1][2]; \
+ xor[1][3] = key_in[3] ^ bucket->key[1][3]; \
+ \
+ xor[2][0] = key_in[0] ^ bucket->key[2][0]; \
+ xor[2][1] = key_in[1] ^ bucket->key[2][1]; \
+ xor[2][2] = key_in[2] ^ bucket->key[2][2]; \
+ xor[2][3] = key_in[3] ^ bucket->key[2][3]; \
+ \
+ xor[3][0] = key_in[0] ^ bucket->key[3][0]; \
+ xor[3][1] = key_in[1] ^ bucket->key[3][1]; \
+ xor[3][2] = key_in[2] ^ bucket->key[3][2]; \
+ xor[3][3] = key_in[3] ^ bucket->key[3][3]; \
+ \
+ or[0] = xor[0][0] | xor[0][1] | xor[0][2] | xor[0][3] | signature[0];\
+ or[1] = xor[1][0] | xor[1][1] | xor[1][2] | xor[1][3] | signature[1];\
+ or[2] = xor[2][0] | xor[2][1] | xor[2][2] | xor[2][3] | signature[2];\
+ or[3] = xor[3][0] | xor[3][1] | xor[3][2] | xor[3][3] | signature[3];\
+ \
+ pos = 4; \
+ if (or[0] == 0) \
+ pos = 0; \
+ if (or[1] == 0) \
+ pos = 1; \
+ if (or[2] == 0) \
+ pos = 2; \
+ if (or[3] == 0) \
+ pos = 3; \
+}
+
+#define lookup1_stage0(pkt0_index, mbuf0, pkts, pkts_mask, f) \
+{ \
+ uint64_t pkt_mask; \
+ uint32_t key_offset = f->key_offset; \
+ \
+ pkt0_index = __builtin_ctzll(pkts_mask); \
+ pkt_mask = 1LLU << pkt0_index; \
+ pkts_mask &= ~pkt_mask; \
+ \
+ mbuf0 = pkts[pkt0_index]; \
+ rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf0, key_offset));\
+}
+
+#define lookup1_stage1(mbuf1, bucket1, f) \
+{ \
+ uint64_t signature; \
+ uint32_t bucket_index; \
+ \
+ signature = RTE_MBUF_METADATA_UINT32(mbuf1, f->signature_offset);\
+ bucket_index = signature & (f->n_buckets - 1); \
+ bucket1 = (struct rte_bucket_4_32 *) \
+ &f->memory[bucket_index * f->bucket_size]; \
+ rte_prefetch0(bucket1); \
+ rte_prefetch0((void *)(((uintptr_t) bucket1) + RTE_CACHE_LINE_SIZE));\
+ rte_prefetch0((void *)(((uintptr_t) bucket1) + 2 * RTE_CACHE_LINE_SIZE));\
+}
+
+#define lookup1_stage2_lru(pkt2_index, mbuf2, bucket2, \
+ pkts_mask_out, entries, f) \
+{ \
+ void *a; \
+ uint64_t pkt_mask; \
+ uint64_t *key; \
+ uint32_t pos; \
+ \
+ key = RTE_MBUF_METADATA_UINT64_PTR(mbuf2, f->key_offset);\
+ \
+ lookup_key32_cmp(key, bucket2, pos); \
+ \
+ pkt_mask = (bucket2->signature[pos] & 1LLU) << pkt2_index;\
+ pkts_mask_out |= pkt_mask; \
+ \
+ a = (void *) &bucket2->data[pos * f->entry_size]; \
+ rte_prefetch0(a); \
+ entries[pkt2_index] = a; \
+ lru_update(bucket2, pos); \
+}
+
+#define lookup1_stage2_ext(pkt2_index, mbuf2, bucket2, pkts_mask_out,\
+ entries, buckets_mask, buckets, keys, f) \
+{ \
+ struct rte_bucket_4_32 *bucket_next; \
+ void *a; \
+ uint64_t pkt_mask, bucket_mask; \
+ uint64_t *key; \
+ uint32_t pos; \
+ \
+ key = RTE_MBUF_METADATA_UINT64_PTR(mbuf2, f->key_offset);\
+ \
+ lookup_key32_cmp(key, bucket2, pos); \
+ \
+ pkt_mask = (bucket2->signature[pos] & 1LLU) << pkt2_index;\
+ pkts_mask_out |= pkt_mask; \
+ \
+ a = (void *) &bucket2->data[pos * f->entry_size]; \
+ rte_prefetch0(a); \
+ entries[pkt2_index] = a; \
+ \
+ bucket_mask = (~pkt_mask) & (bucket2->next_valid << pkt2_index);\
+ buckets_mask |= bucket_mask; \
+ bucket_next = bucket2->next; \
+ buckets[pkt2_index] = bucket_next; \
+ keys[pkt2_index] = key; \
+}
+
+#define lookup_grinder(pkt_index, buckets, keys, pkts_mask_out, \
+ entries, buckets_mask, f) \
+{ \
+ struct rte_bucket_4_32 *bucket, *bucket_next; \
+ void *a; \
+ uint64_t pkt_mask, bucket_mask; \
+ uint64_t *key; \
+ uint32_t pos; \
+ \
+ bucket = buckets[pkt_index]; \
+ key = keys[pkt_index]; \
+ \
+ lookup_key32_cmp(key, bucket, pos); \
+ \
+ pkt_mask = (bucket->signature[pos] & 1LLU) << pkt_index;\
+ pkts_mask_out |= pkt_mask; \
+ \
+ a = (void *) &bucket->data[pos * f->entry_size]; \
+ rte_prefetch0(a); \
+ entries[pkt_index] = a; \
+ \
+ bucket_mask = (~pkt_mask) & (bucket->next_valid << pkt_index);\
+ buckets_mask |= bucket_mask; \
+ bucket_next = bucket->next; \
+ rte_prefetch0(bucket_next); \
+ rte_prefetch0((void *)(((uintptr_t) bucket_next) + RTE_CACHE_LINE_SIZE));\
+ rte_prefetch0((void *)(((uintptr_t) bucket_next) + \
+ 2 * RTE_CACHE_LINE_SIZE)); \
+ buckets[pkt_index] = bucket_next; \
+ keys[pkt_index] = key; \
+}
+
+#define lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01,\
+ pkts, pkts_mask, f) \
+{ \
+ uint64_t pkt00_mask, pkt01_mask; \
+ uint32_t key_offset = f->key_offset; \
+ \
+ pkt00_index = __builtin_ctzll(pkts_mask); \
+ pkt00_mask = 1LLU << pkt00_index; \
+ pkts_mask &= ~pkt00_mask; \
+ \
+ mbuf00 = pkts[pkt00_index]; \
+ rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf00, key_offset));\
+ \
+ pkt01_index = __builtin_ctzll(pkts_mask); \
+ pkt01_mask = 1LLU << pkt01_index; \
+ pkts_mask &= ~pkt01_mask; \
+ \
+ mbuf01 = pkts[pkt01_index]; \
+ rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf01, key_offset));\
+}
+
+#define lookup2_stage0_with_odd_support(pkt00_index, pkt01_index,\
+ mbuf00, mbuf01, pkts, pkts_mask, f) \
+{ \
+ uint64_t pkt00_mask, pkt01_mask; \
+ uint32_t key_offset = f->key_offset; \
+ \
+ pkt00_index = __builtin_ctzll(pkts_mask); \
+ pkt00_mask = 1LLU << pkt00_index; \
+ pkts_mask &= ~pkt00_mask; \
+ \
+ mbuf00 = pkts[pkt00_index]; \
+ rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf00, key_offset)); \
+ \
+ pkt01_index = __builtin_ctzll(pkts_mask); \
+ if (pkts_mask == 0) \
+ pkt01_index = pkt00_index; \
+ \
+ pkt01_mask = 1LLU << pkt01_index; \
+ pkts_mask &= ~pkt01_mask; \
+ \
+ mbuf01 = pkts[pkt01_index]; \
+ rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf01, key_offset)); \
+}
+
+#define lookup2_stage1(mbuf10, mbuf11, bucket10, bucket11, f) \
+{ \
+ uint64_t signature10, signature11; \
+ uint32_t bucket10_index, bucket11_index; \
+ \
+ signature10 = RTE_MBUF_METADATA_UINT32(mbuf10, f->signature_offset);\
+ bucket10_index = signature10 & (f->n_buckets - 1); \
+ bucket10 = (struct rte_bucket_4_32 *) \
+ &f->memory[bucket10_index * f->bucket_size]; \
+ rte_prefetch0(bucket10); \
+ rte_prefetch0((void *)(((uintptr_t) bucket10) + RTE_CACHE_LINE_SIZE));\
+ rte_prefetch0((void *)(((uintptr_t) bucket10) + 2 * RTE_CACHE_LINE_SIZE));\
+ \
+ signature11 = RTE_MBUF_METADATA_UINT32(mbuf11, f->signature_offset);\
+ bucket11_index = signature11 & (f->n_buckets - 1); \
+ bucket11 = (struct rte_bucket_4_32 *) \
+ &f->memory[bucket11_index * f->bucket_size]; \
+ rte_prefetch0(bucket11); \
+ rte_prefetch0((void *)(((uintptr_t) bucket11) + RTE_CACHE_LINE_SIZE));\
+ rte_prefetch0((void *)(((uintptr_t) bucket11) + 2 * RTE_CACHE_LINE_SIZE));\
+}
+
+#define lookup2_stage2_lru(pkt20_index, pkt21_index, mbuf20, mbuf21,\
+ bucket20, bucket21, pkts_mask_out, entries, f) \
+{ \
+ void *a20, *a21; \
+ uint64_t pkt20_mask, pkt21_mask; \
+ uint64_t *key20, *key21; \
+ uint32_t pos20, pos21; \
+ \
+ key20 = RTE_MBUF_METADATA_UINT64_PTR(mbuf20, f->key_offset);\
+ key21 = RTE_MBUF_METADATA_UINT64_PTR(mbuf21, f->key_offset);\
+ \
+ lookup_key32_cmp(key20, bucket20, pos20); \
+ lookup_key32_cmp(key21, bucket21, pos21); \
+ \
+ pkt20_mask = (bucket20->signature[pos20] & 1LLU) << pkt20_index;\
+ pkt21_mask = (bucket21->signature[pos21] & 1LLU) << pkt21_index;\
+ pkts_mask_out |= pkt20_mask | pkt21_mask; \
+ \
+ a20 = (void *) &bucket20->data[pos20 * f->entry_size]; \
+ a21 = (void *) &bucket21->data[pos21 * f->entry_size]; \
+ rte_prefetch0(a20); \
+ rte_prefetch0(a21); \
+ entries[pkt20_index] = a20; \
+ entries[pkt21_index] = a21; \
+ lru_update(bucket20, pos20); \
+ lru_update(bucket21, pos21); \
+}
+
+#define lookup2_stage2_ext(pkt20_index, pkt21_index, mbuf20, mbuf21, bucket20, \
+ bucket21, pkts_mask_out, entries, buckets_mask, buckets, keys, f)\
+{ \
+ struct rte_bucket_4_32 *bucket20_next, *bucket21_next; \
+ void *a20, *a21; \
+ uint64_t pkt20_mask, pkt21_mask, bucket20_mask, bucket21_mask;\
+ uint64_t *key20, *key21; \
+ uint32_t pos20, pos21; \
+ \
+ key20 = RTE_MBUF_METADATA_UINT64_PTR(mbuf20, f->key_offset);\
+ key21 = RTE_MBUF_METADATA_UINT64_PTR(mbuf21, f->key_offset);\
+ \
+ lookup_key32_cmp(key20, bucket20, pos20); \
+ lookup_key32_cmp(key21, bucket21, pos21); \
+ \
+ pkt20_mask = (bucket20->signature[pos20] & 1LLU) << pkt20_index;\
+ pkt21_mask = (bucket21->signature[pos21] & 1LLU) << pkt21_index;\
+ pkts_mask_out |= pkt20_mask | pkt21_mask; \
+ \
+ a20 = (void *) &bucket20->data[pos20 * f->entry_size]; \
+ a21 = (void *) &bucket21->data[pos21 * f->entry_size]; \
+ rte_prefetch0(a20); \
+ rte_prefetch0(a21); \
+ entries[pkt20_index] = a20; \
+ entries[pkt21_index] = a21; \
+ \
+ bucket20_mask = (~pkt20_mask) & (bucket20->next_valid << pkt20_index);\
+ bucket21_mask = (~pkt21_mask) & (bucket21->next_valid << pkt21_index);\
+ buckets_mask |= bucket20_mask | bucket21_mask; \
+ bucket20_next = bucket20->next; \
+ bucket21_next = bucket21->next; \
+ buckets[pkt20_index] = bucket20_next; \
+ buckets[pkt21_index] = bucket21_next; \
+ keys[pkt20_index] = key20; \
+ keys[pkt21_index] = key21; \
+}
+
+static int
+rte_table_hash_lookup_key32_lru(
+ void *table,
+ struct rte_mbuf **pkts,
+ uint64_t pkts_mask,
+ uint64_t *lookup_hit_mask,
+ void **entries)
+{
+ struct rte_table_hash *f = (struct rte_table_hash *) table;
+ struct rte_bucket_4_32 *bucket10, *bucket11, *bucket20, *bucket21;
+ struct rte_mbuf *mbuf00, *mbuf01, *mbuf10, *mbuf11, *mbuf20, *mbuf21;
+ uint32_t pkt00_index, pkt01_index, pkt10_index;
+ uint32_t pkt11_index, pkt20_index, pkt21_index;
+ uint64_t pkts_mask_out = 0;
+
+ __rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
+ RTE_TABLE_HASH_KEY32_STATS_PKTS_IN_ADD(f, n_pkts_in);
+
+ /* Cannot run the pipeline with less than 5 packets */
+ if (__builtin_popcountll(pkts_mask) < 5) {
+ for ( ; pkts_mask; ) {
+ struct rte_bucket_4_32 *bucket;
+ struct rte_mbuf *mbuf;
+ uint32_t pkt_index;
+
+ lookup1_stage0(pkt_index, mbuf, pkts, pkts_mask, f);
+ lookup1_stage1(mbuf, bucket, f);
+ lookup1_stage2_lru(pkt_index, mbuf, bucket,
+ pkts_mask_out, entries, f);
+ }
+
+ *lookup_hit_mask = pkts_mask_out;
+ RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in - __builtin_popcountll(pkts_mask_out));
+ return 0;
+ }
+
+ /*
+ * Pipeline fill
+ *
+ */
+ /* Pipeline stage 0 */
+ lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01, pkts,
+ pkts_mask, f);
+
+ /* Pipeline feed */
+ mbuf10 = mbuf00;
+ mbuf11 = mbuf01;
+ pkt10_index = pkt00_index;
+ pkt11_index = pkt01_index;
+
+ /* Pipeline stage 0 */
+ lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01, pkts,
+ pkts_mask, f);
+
+ /* Pipeline stage 1 */
+ lookup2_stage1(mbuf10, mbuf11, bucket10, bucket11, f);
+
+ /*
+ * Pipeline run
+ *
+ */
+ for ( ; pkts_mask; ) {
+ /* Pipeline feed */
+ bucket20 = bucket10;
+ bucket21 = bucket11;
+ mbuf20 = mbuf10;
+ mbuf21 = mbuf11;
+ mbuf10 = mbuf00;
+ mbuf11 = mbuf01;
+ pkt20_index = pkt10_index;
+ pkt21_index = pkt11_index;
+ pkt10_index = pkt00_index;
+ pkt11_index = pkt01_index;
+
+ /* Pipeline stage 0 */
+ lookup2_stage0_with_odd_support(pkt00_index, pkt01_index,
+ mbuf00, mbuf01, pkts, pkts_mask, f);
+
+ /* Pipeline stage 1 */
+ lookup2_stage1(mbuf10, mbuf11, bucket10, bucket11, f);
+
+ /* Pipeline stage 2 */
+ lookup2_stage2_lru(pkt20_index, pkt21_index,
+ mbuf20, mbuf21, bucket20, bucket21, pkts_mask_out,
+ entries, f);
+ }
+
+ /*
+ * Pipeline flush
+ *
+ */
+ /* Pipeline feed */
+ bucket20 = bucket10;
+ bucket21 = bucket11;
+ mbuf20 = mbuf10;
+ mbuf21 = mbuf11;
+ mbuf10 = mbuf00;
+ mbuf11 = mbuf01;
+ pkt20_index = pkt10_index;
+ pkt21_index = pkt11_index;
+ pkt10_index = pkt00_index;
+ pkt11_index = pkt01_index;
+
+ /* Pipeline stage 1 */
+ lookup2_stage1(mbuf10, mbuf11, bucket10, bucket11, f);
+
+ /* Pipeline stage 2 */
+ lookup2_stage2_lru(pkt20_index, pkt21_index,
+ mbuf20, mbuf21, bucket20, bucket21, pkts_mask_out, entries, f);
+
+ /* Pipeline feed */
+ bucket20 = bucket10;
+ bucket21 = bucket11;
+ mbuf20 = mbuf10;
+ mbuf21 = mbuf11;
+ pkt20_index = pkt10_index;
+ pkt21_index = pkt11_index;
+
+ /* Pipeline stage 2 */
+ lookup2_stage2_lru(pkt20_index, pkt21_index,
+ mbuf20, mbuf21, bucket20, bucket21, pkts_mask_out, entries, f);
+
+ *lookup_hit_mask = pkts_mask_out;
+ RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in - __builtin_popcountll(pkts_mask_out));
+ return 0;
+} /* rte_table_hash_lookup_key32_lru() */
+
+static int
+rte_table_hash_lookup_key32_ext(
+ void *table,
+ struct rte_mbuf **pkts,
+ uint64_t pkts_mask,
+ uint64_t *lookup_hit_mask,
+ void **entries)
+{
+ struct rte_table_hash *f = (struct rte_table_hash *) table;
+ struct rte_bucket_4_32 *bucket10, *bucket11, *bucket20, *bucket21;
+ struct rte_mbuf *mbuf00, *mbuf01, *mbuf10, *mbuf11, *mbuf20, *mbuf21;
+ uint32_t pkt00_index, pkt01_index, pkt10_index;
+ uint32_t pkt11_index, pkt20_index, pkt21_index;
+ uint64_t pkts_mask_out = 0, buckets_mask = 0;
+ struct rte_bucket_4_32 *buckets[RTE_PORT_IN_BURST_SIZE_MAX];
+ uint64_t *keys[RTE_PORT_IN_BURST_SIZE_MAX];
+
+ __rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
+ RTE_TABLE_HASH_KEY32_STATS_PKTS_IN_ADD(f, n_pkts_in);
+
+ /* Cannot run the pipeline with less than 5 packets */
+ if (__builtin_popcountll(pkts_mask) < 5) {
+ for ( ; pkts_mask; ) {
+ struct rte_bucket_4_32 *bucket;
+ struct rte_mbuf *mbuf;
+ uint32_t pkt_index;
+
+ lookup1_stage0(pkt_index, mbuf, pkts, pkts_mask, f);
+ lookup1_stage1(mbuf, bucket, f);
+ lookup1_stage2_ext(pkt_index, mbuf, bucket,
+ pkts_mask_out, entries, buckets_mask, buckets,
+ keys, f);
+ }
+
+ goto grind_next_buckets;
+ }
+
+ /*
+ * Pipeline fill
+ *
+ */
+ /* Pipeline stage 0 */
+ lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01, pkts,
+ pkts_mask, f);
+
+ /* Pipeline feed */
+ mbuf10 = mbuf00;
+ mbuf11 = mbuf01;
+ pkt10_index = pkt00_index;
+ pkt11_index = pkt01_index;
+
+ /* Pipeline stage 0 */
+ lookup2_stage0(pkt00_index, pkt01_index, mbuf00, mbuf01, pkts,
+ pkts_mask, f);
+
+ /* Pipeline stage 1 */
+ lookup2_stage1(mbuf10, mbuf11, bucket10, bucket11, f);
+
+ /*
+ * Pipeline run
+ *
+ */
+ for ( ; pkts_mask; ) {
+ /* Pipeline feed */
+ bucket20 = bucket10;
+ bucket21 = bucket11;
+ mbuf20 = mbuf10;
+ mbuf21 = mbuf11;
+ mbuf10 = mbuf00;
+ mbuf11 = mbuf01;
+ pkt20_index = pkt10_index;
+ pkt21_index = pkt11_index;
+ pkt10_index = pkt00_index;
+ pkt11_index = pkt01_index;
+
+ /* Pipeline stage 0 */
+ lookup2_stage0_with_odd_support(pkt00_index, pkt01_index,
+ mbuf00, mbuf01, pkts, pkts_mask, f);
+
+ /* Pipeline stage 1 */
+ lookup2_stage1(mbuf10, mbuf11, bucket10, bucket11, f);
+
+ /* Pipeline stage 2 */
+ lookup2_stage2_ext(pkt20_index, pkt21_index, mbuf20, mbuf21,
+ bucket20, bucket21, pkts_mask_out, entries,
+ buckets_mask, buckets, keys, f);
+ }
+
+ /*
+ * Pipeline flush
+ *
+ */
+ /* Pipeline feed */
+ bucket20 = bucket10;
+ bucket21 = bucket11;
+ mbuf20 = mbuf10;
+ mbuf21 = mbuf11;
+ mbuf10 = mbuf00;
+ mbuf11 = mbuf01;
+ pkt20_index = pkt10_index;
+ pkt21_index = pkt11_index;
+ pkt10_index = pkt00_index;
+ pkt11_index = pkt01_index;
+
+ /* Pipeline stage 1 */
+ lookup2_stage1(mbuf10, mbuf11, bucket10, bucket11, f);
+
+ /* Pipeline stage 2 */
+ lookup2_stage2_ext(pkt20_index, pkt21_index, mbuf20, mbuf21,
+ bucket20, bucket21, pkts_mask_out, entries,
+ buckets_mask, buckets, keys, f);
+
+ /* Pipeline feed */
+ bucket20 = bucket10;
+ bucket21 = bucket11;
+ mbuf20 = mbuf10;
+ mbuf21 = mbuf11;
+ pkt20_index = pkt10_index;
+ pkt21_index = pkt11_index;
+
+ /* Pipeline stage 2 */
+ lookup2_stage2_ext(pkt20_index, pkt21_index, mbuf20, mbuf21,
+ bucket20, bucket21, pkts_mask_out, entries,
+ buckets_mask, buckets, keys, f);
+
+grind_next_buckets:
+ /* Grind next buckets */
+ for ( ; buckets_mask; ) {
+ uint64_t buckets_mask_next = 0;
+
+ for ( ; buckets_mask; ) {
+ uint64_t pkt_mask;
+ uint32_t pkt_index;
+
+ pkt_index = __builtin_ctzll(buckets_mask);
+ pkt_mask = 1LLU << pkt_index;
+ buckets_mask &= ~pkt_mask;
+
+ lookup_grinder(pkt_index, buckets, keys, pkts_mask_out,
+ entries, buckets_mask_next, f);
+ }
+
+ buckets_mask = buckets_mask_next;
+ }
+
+ *lookup_hit_mask = pkts_mask_out;
+ RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in - __builtin_popcountll(pkts_mask_out));
+ return 0;
+} /* rte_table_hash_lookup_key32_ext() */
+
+static int
+rte_table_hash_key32_stats_read(void *table, struct rte_table_stats *stats, int clear)
+{
+ struct rte_table_hash *t = (struct rte_table_hash *) table;
+
+ if (stats != NULL)
+ memcpy(stats, &t->stats, sizeof(t->stats));
+
+ if (clear)
+ memset(&t->stats, 0, sizeof(t->stats));
+
+ return 0;
+}
+
+struct rte_table_ops rte_table_hash_key32_lru_ops = {
+ .f_create = rte_table_hash_create_key32_lru,
+ .f_free = rte_table_hash_free_key32_lru,
+ .f_add = rte_table_hash_entry_add_key32_lru,
+ .f_delete = rte_table_hash_entry_delete_key32_lru,
+ .f_add_bulk = NULL,
+ .f_delete_bulk = NULL,
+ .f_lookup = rte_table_hash_lookup_key32_lru,
+ .f_stats = rte_table_hash_key32_stats_read,
+};
+
+struct rte_table_ops rte_table_hash_key32_ext_ops = {
+ .f_create = rte_table_hash_create_key32_ext,
+ .f_free = rte_table_hash_free_key32_ext,
+ .f_add = rte_table_hash_entry_add_key32_ext,
+ .f_delete = rte_table_hash_entry_delete_key32_ext,
+ .f_add_bulk = NULL,
+ .f_delete_bulk = NULL,
+ .f_lookup = rte_table_hash_lookup_key32_ext,
+ .f_stats = rte_table_hash_key32_stats_read,
+};
Code Review / deb_dpdk.git / blobdiff