diff options
Diffstat (limited to 'src/dpdk_lib18/librte_table/rte_table_hash_lru.c')
| -rwxr-xr-x | src/dpdk_lib18/librte_table/rte_table_hash_lru.c | 1065 |
1 files changed, 0 insertions, 1065 deletions
diff --git a/src/dpdk_lib18/librte_table/rte_table_hash_lru.c b/src/dpdk_lib18/librte_table/rte_table_hash_lru.c deleted file mode 100755 index c9a8afd7..00000000 --- a/src/dpdk_lib18/librte_table/rte_table_hash_lru.c +++ /dev/null @@ -1,1065 +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_log.h> - -#include "rte_table_hash.h" -#include "rte_lru.h" - -#define KEYS_PER_BUCKET 4 - -struct bucket { - union { - struct bucket *next; - uint64_t lru_list; - }; - uint16_t sig[KEYS_PER_BUCKET]; - uint32_t key_pos[KEYS_PER_BUCKET]; -}; - -struct grinder { - struct bucket *bkt; - uint64_t sig; - uint64_t match; - uint64_t match_pos; - uint32_t key_index; -}; - -struct rte_table_hash { - /* Input parameters */ - uint32_t key_size; - uint32_t entry_size; - uint32_t n_keys; - uint32_t n_buckets; - rte_table_hash_op_hash f_hash; - uint64_t seed; - uint32_t signature_offset; - uint32_t key_offset; - - /* Internal */ - uint64_t bucket_mask; - uint32_t key_size_shl; - uint32_t data_size_shl; - uint32_t key_stack_tos; - - /* Grinder */ - struct grinder grinders[RTE_PORT_IN_BURST_SIZE_MAX]; - - /* Tables */ - struct bucket *buckets; - uint8_t *key_mem; - uint8_t *data_mem; - uint32_t *key_stack; - - /* Table memory */ - uint8_t memory[0] __rte_cache_aligned; -}; - -static int -check_params_create(struct rte_table_hash_lru_params *params) -{ - uint32_t n_buckets_min; - - /* key_size */ - if ((params->key_size == 0) || - (!rte_is_power_of_2(params->key_size))) { - RTE_LOG(ERR, TABLE, "%s: key_size invalid value\n", __func__); - return -EINVAL; - } - - /* n_keys */ - if ((params->n_keys == 0) || - (!rte_is_power_of_2(params->n_keys))) { - RTE_LOG(ERR, TABLE, "%s: n_keys invalid value\n", __func__); - return -EINVAL; - } - - /* n_buckets */ - n_buckets_min = (params->n_keys + KEYS_PER_BUCKET - 1) / params->n_keys; - if ((params->n_buckets == 0) || - (!rte_is_power_of_2(params->n_keys)) || - (params->n_buckets < n_buckets_min)) { - RTE_LOG(ERR, TABLE, "%s: n_buckets invalid value\n", __func__); - return -EINVAL; - } - - /* f_hash */ - if (params->f_hash == NULL) { - RTE_LOG(ERR, TABLE, "%s: f_hash invalid value\n", __func__); - return -EINVAL; - } - - /* signature offset */ - if ((params->signature_offset & 0x3) != 0) { - RTE_LOG(ERR, TABLE, "%s: signature_offset invalid value\n", - __func__); - return -EINVAL; - } - - /* key offset */ - if ((params->key_offset & 0x7) != 0) { - RTE_LOG(ERR, TABLE, "%s: key_offset invalid value\n", __func__); - return -EINVAL; - } - - return 0; -} - -static void * -rte_table_hash_lru_create(void *params, int socket_id, uint32_t entry_size) -{ - struct rte_table_hash_lru_params *p = - (struct rte_table_hash_lru_params *) params; - struct rte_table_hash *t; - uint32_t total_size, table_meta_sz; - uint32_t bucket_sz, key_sz, key_stack_sz, data_sz; - uint32_t bucket_offset, key_offset, key_stack_offset, data_offset; - uint32_t i; - - /* Check input parameters */ - if ((check_params_create(p) != 0) || - (!rte_is_power_of_2(entry_size)) || - ((sizeof(struct rte_table_hash) % RTE_CACHE_LINE_SIZE) != 0) || - (sizeof(struct bucket) != (RTE_CACHE_LINE_SIZE / 2))) { - return NULL; - } - - /* Memory allocation */ - table_meta_sz = RTE_CACHE_LINE_ROUNDUP(sizeof(struct rte_table_hash)); - bucket_sz = RTE_CACHE_LINE_ROUNDUP(p->n_buckets * sizeof(struct bucket)); - key_sz = RTE_CACHE_LINE_ROUNDUP(p->n_keys * p->key_size); - key_stack_sz = RTE_CACHE_LINE_ROUNDUP(p->n_keys * sizeof(uint32_t)); - data_sz = RTE_CACHE_LINE_ROUNDUP(p->n_keys * entry_size); - total_size = table_meta_sz + bucket_sz + key_sz + key_stack_sz + - data_sz; - - t = rte_zmalloc_socket("TABLE", total_size, RTE_CACHE_LINE_SIZE, socket_id); - if (t == NULL) { - RTE_LOG(ERR, TABLE, - "%s: Cannot allocate %u bytes for hash table\n", - __func__, total_size); - return NULL; - } - RTE_LOG(INFO, TABLE, "%s (%u-byte key): Hash table memory footprint is " - "%u bytes\n", __func__, p->key_size, total_size); - - /* Memory initialization */ - t->key_size = p->key_size; - t->entry_size = entry_size; - t->n_keys = p->n_keys; - t->n_buckets = p->n_buckets; - t->f_hash = p->f_hash; - t->seed = p->seed; - t->signature_offset = p->signature_offset; - t->key_offset = p->key_offset; - - /* Internal */ - t->bucket_mask = t->n_buckets - 1; - t->key_size_shl = __builtin_ctzl(p->key_size); - t->data_size_shl = __builtin_ctzl(entry_size); - - /* Tables */ - bucket_offset = 0; - key_offset = bucket_offset + bucket_sz; - key_stack_offset = key_offset + key_sz; - data_offset = key_stack_offset + key_stack_sz; - - t->buckets = (struct bucket *) &t->memory[bucket_offset]; - t->key_mem = &t->memory[key_offset]; - t->key_stack = (uint32_t *) &t->memory[key_stack_offset]; - t->data_mem = &t->memory[data_offset]; - - /* Key stack */ - for (i = 0; i < t->n_keys; i++) - t->key_stack[i] = t->n_keys - 1 - i; - t->key_stack_tos = t->n_keys; - - /* LRU */ - for (i = 0; i < t->n_buckets; i++) { - struct bucket *bkt = &t->buckets[i]; - - lru_init(bkt); - } - - return t; -} - -static int -rte_table_hash_lru_free(void *table) -{ - struct rte_table_hash *t = (struct rte_table_hash *) table; - - /* Check input parameters */ - if (t == NULL) - return -EINVAL; - - rte_free(t); - return 0; -} - -static int -rte_table_hash_lru_entry_add(void *table, void *key, void *entry, - int *key_found, void **entry_ptr) -{ - struct rte_table_hash *t = (struct rte_table_hash *) table; - struct bucket *bkt; - uint64_t sig; - uint32_t bkt_index, i; - - sig = t->f_hash(key, t->key_size, t->seed); - bkt_index = sig & t->bucket_mask; - bkt = &t->buckets[bkt_index]; - sig = (sig >> 16) | 1LLU; - - /* Key is present in the bucket */ - for (i = 0; i < KEYS_PER_BUCKET; i++) { - uint64_t bkt_sig = (uint64_t) bkt->sig[i]; - uint32_t bkt_key_index = bkt->key_pos[i]; - uint8_t *bkt_key = &t->key_mem[bkt_key_index << - t->key_size_shl]; - - if ((sig == bkt_sig) && (memcmp(key, bkt_key, t->key_size) - == 0)) { - uint8_t *data = &t->data_mem[bkt_key_index << - t->data_size_shl]; - - memcpy(data, entry, t->entry_size); - lru_update(bkt, i); - *key_found = 1; - *entry_ptr = (void *) data; - return 0; - } - } - - /* Key is not present in the bucket */ - for (i = 0; i < KEYS_PER_BUCKET; i++) { - uint64_t bkt_sig = (uint64_t) bkt->sig[i]; - - if (bkt_sig == 0) { - uint32_t bkt_key_index; - uint8_t *bkt_key, *data; - - /* Allocate new key */ - if (t->key_stack_tos == 0) { - /* No keys available */ - return -ENOSPC; - } - bkt_key_index = t->key_stack[--t->key_stack_tos]; - - /* Install new key */ - bkt_key = &t->key_mem[bkt_key_index << t->key_size_shl]; - data = &t->data_mem[bkt_key_index << t->data_size_shl]; - - bkt->sig[i] = (uint16_t) sig; - bkt->key_pos[i] = bkt_key_index; - memcpy(bkt_key, key, t->key_size); - memcpy(data, entry, t->entry_size); - lru_update(bkt, i); - - *key_found = 0; - *entry_ptr = (void *) data; - return 0; - } - } - - /* Bucket full */ - { - uint64_t pos = lru_pos(bkt); - uint32_t bkt_key_index = bkt->key_pos[pos]; - uint8_t *bkt_key = &t->key_mem[bkt_key_index << - t->key_size_shl]; - uint8_t *data = &t->data_mem[bkt_key_index << t->data_size_shl]; - - bkt->sig[pos] = (uint16_t) sig; - memcpy(bkt_key, key, t->key_size); - memcpy(data, entry, t->entry_size); - lru_update(bkt, pos); - - *key_found = 0; - *entry_ptr = (void *) data; - return 0; - } -} - -static int -rte_table_hash_lru_entry_delete(void *table, void *key, int *key_found, - void *entry) -{ - struct rte_table_hash *t = (struct rte_table_hash *) table; - struct bucket *bkt; - uint64_t sig; - uint32_t bkt_index, i; - - sig = t->f_hash(key, t->key_size, t->seed); - bkt_index = sig & t->bucket_mask; - bkt = &t->buckets[bkt_index]; - sig = (sig >> 16) | 1LLU; - - /* Key is present in the bucket */ - for (i = 0; i < KEYS_PER_BUCKET; i++) { - uint64_t bkt_sig = (uint64_t) bkt->sig[i]; - uint32_t bkt_key_index = bkt->key_pos[i]; - uint8_t *bkt_key = &t->key_mem[bkt_key_index << - t->key_size_shl]; - - if ((sig == bkt_sig) && - (memcmp(key, bkt_key, t->key_size) == 0)) { - uint8_t *data = &t->data_mem[bkt_key_index << - t->data_size_shl]; - - bkt->sig[i] = 0; - t->key_stack[t->key_stack_tos++] = bkt_key_index; - *key_found = 1; - memcpy(entry, data, t->entry_size); - return 0; - } - } - - /* Key is not present in the bucket */ - *key_found = 0; - return 0; -} - -static int rte_table_hash_lru_lookup_unoptimized( - void *table, - struct rte_mbuf **pkts, - uint64_t pkts_mask, - uint64_t *lookup_hit_mask, - void **entries, - int dosig) -{ - struct rte_table_hash *t = (struct rte_table_hash *) table; - uint64_t pkts_mask_out = 0; - - for ( ; pkts_mask; ) { - struct bucket *bkt; - struct rte_mbuf *pkt; - uint8_t *key; - uint64_t pkt_mask, sig; - uint32_t pkt_index, bkt_index, i; - - pkt_index = __builtin_ctzll(pkts_mask); - pkt_mask = 1LLU << pkt_index; - pkts_mask &= ~pkt_mask; - - pkt = pkts[pkt_index]; - key = RTE_MBUF_METADATA_UINT8_PTR(pkt, t->key_offset); - if (dosig) - sig = (uint64_t) t->f_hash(key, t->key_size, t->seed); - else - sig = RTE_MBUF_METADATA_UINT32(pkt, - t->signature_offset); - - bkt_index = sig & t->bucket_mask; - bkt = &t->buckets[bkt_index]; - sig = (sig >> 16) | 1LLU; - - /* Key is present in the bucket */ - for (i = 0; i < KEYS_PER_BUCKET; i++) { - uint64_t bkt_sig = (uint64_t) bkt->sig[i]; - uint32_t bkt_key_index = bkt->key_pos[i]; - uint8_t *bkt_key = &t->key_mem[bkt_key_index << - t->key_size_shl]; - - if ((sig == bkt_sig) && (memcmp(key, bkt_key, - t->key_size) == 0)) { - uint8_t *data = &t->data_mem[bkt_key_index << - t->data_size_shl]; - - lru_update(bkt, i); - pkts_mask_out |= pkt_mask; - entries[pkt_index] = (void *) data; - break; - } - } - } - - *lookup_hit_mask = pkts_mask_out; - return 0; -} - -/*** -* -* mask = match bitmask -* match = at least one match -* match_many = more than one match -* match_pos = position of first match -* -* ---------------------------------------- -* mask match match_many match_pos -* ---------------------------------------- -* 0000 0 0 00 -* 0001 1 0 00 -* 0010 1 0 01 -* 0011 1 1 00 -* ---------------------------------------- -* 0100 1 0 10 -* 0101 1 1 00 -* 0110 1 1 01 -* 0111 1 1 00 -* ---------------------------------------- -* 1000 1 0 11 -* 1001 1 1 00 -* 1010 1 1 01 -* 1011 1 1 00 -* ---------------------------------------- -* 1100 1 1 10 -* 1101 1 1 00 -* 1110 1 1 01 -* 1111 1 1 00 -* ---------------------------------------- -* -* match = 1111_1111_1111_1110 -* match_many = 1111_1110_1110_1000 -* match_pos = 0001_0010_0001_0011__0001_0010_0001_0000 -* -* match = 0xFFFELLU -* match_many = 0xFEE8LLU -* match_pos = 0x12131210LLU -* -***/ - -#define LUT_MATCH 0xFFFELLU -#define LUT_MATCH_MANY 0xFEE8LLU -#define LUT_MATCH_POS 0x12131210LLU - -#define lookup_cmp_sig(mbuf_sig, bucket, match, match_many, match_pos)\ -{ \ - uint64_t bucket_sig[4], mask[4], mask_all; \ - \ - bucket_sig[0] = bucket->sig[0]; \ - bucket_sig[1] = bucket->sig[1]; \ - bucket_sig[2] = bucket->sig[2]; \ - bucket_sig[3] = bucket->sig[3]; \ - \ - bucket_sig[0] ^= mbuf_sig; \ - bucket_sig[1] ^= mbuf_sig; \ - bucket_sig[2] ^= mbuf_sig; \ - bucket_sig[3] ^= mbuf_sig; \ - \ - mask[0] = 0; \ - mask[1] = 0; \ - mask[2] = 0; \ - mask[3] = 0; \ - \ - if (bucket_sig[0] == 0) \ - mask[0] = 1; \ - if (bucket_sig[1] == 0) \ - mask[1] = 2; \ - if (bucket_sig[2] == 0) \ - mask[2] = 4; \ - if (bucket_sig[3] == 0) \ - mask[3] = 8; \ - \ - mask_all = (mask[0] | mask[1]) | (mask[2] | mask[3]); \ - \ - match = (LUT_MATCH >> mask_all) & 1; \ - match_many = (LUT_MATCH_MANY >> mask_all) & 1; \ - match_pos = (LUT_MATCH_POS >> (mask_all << 1)) & 3; \ -} - -#define lookup_cmp_key(mbuf, key, match_key, f) \ -{ \ - uint64_t *pkt_key = RTE_MBUF_METADATA_UINT64_PTR(mbuf, f->key_offset);\ - uint64_t *bkt_key = (uint64_t *) key; \ - \ - switch (f->key_size) { \ - case 8: \ - { \ - uint64_t xor = pkt_key[0] ^ bkt_key[0]; \ - match_key = 0; \ - if (xor == 0) \ - match_key = 1; \ - } \ - break; \ - \ - case 16: \ - { \ - uint64_t xor[2], or; \ - \ - xor[0] = pkt_key[0] ^ bkt_key[0]; \ - xor[1] = pkt_key[1] ^ bkt_key[1]; \ - or = xor[0] | xor[1]; \ - match_key = 0; \ - if (or == 0) \ - match_key = 1; \ - } \ - break; \ - \ - case 32: \ - { \ - uint64_t xor[4], or; \ - \ - xor[0] = pkt_key[0] ^ bkt_key[0]; \ - xor[1] = pkt_key[1] ^ bkt_key[1]; \ - xor[2] = pkt_key[2] ^ bkt_key[2]; \ - xor[3] = pkt_key[3] ^ bkt_key[3]; \ - or = xor[0] | xor[1] | xor[2] | xor[3]; \ - match_key = 0; \ - if (or == 0) \ - match_key = 1; \ - } \ - break; \ - \ - case 64: \ - { \ - uint64_t xor[8], or; \ - \ - xor[0] = pkt_key[0] ^ bkt_key[0]; \ - xor[1] = pkt_key[1] ^ bkt_key[1]; \ - xor[2] = pkt_key[2] ^ bkt_key[2]; \ - xor[3] = pkt_key[3] ^ bkt_key[3]; \ - xor[4] = pkt_key[4] ^ bkt_key[4]; \ - xor[5] = pkt_key[5] ^ bkt_key[5]; \ - xor[6] = pkt_key[6] ^ bkt_key[6]; \ - xor[7] = pkt_key[7] ^ bkt_key[7]; \ - or = xor[0] | xor[1] | xor[2] | xor[3] | \ - xor[4] | xor[5] | xor[6] | xor[7]; \ - match_key = 0; \ - if (or == 0) \ - match_key = 1; \ - } \ - break; \ - \ - default: \ - match_key = 0; \ - if (memcmp(pkt_key, bkt_key, f->key_size) == 0) \ - match_key = 1; \ - } \ -} - -#define lookup2_stage0(t, g, pkts, pkts_mask, pkt00_index, pkt01_index)\ -{ \ - uint64_t pkt00_mask, pkt01_mask; \ - struct rte_mbuf *mbuf00, *mbuf01; \ - \ - pkt00_index = __builtin_ctzll(pkts_mask); \ - pkt00_mask = 1LLU << pkt00_index; \ - pkts_mask &= ~pkt00_mask; \ - mbuf00 = pkts[pkt00_index]; \ - \ - 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(mbuf00, 0)); \ - rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf01, 0)); \ -} - -#define lookup2_stage0_with_odd_support(t, g, pkts, pkts_mask, pkt00_index, \ - pkt01_index) \ -{ \ - uint64_t pkt00_mask, pkt01_mask; \ - struct rte_mbuf *mbuf00, *mbuf01; \ - \ - pkt00_index = __builtin_ctzll(pkts_mask); \ - pkt00_mask = 1LLU << pkt00_index; \ - pkts_mask &= ~pkt00_mask; \ - mbuf00 = pkts[pkt00_index]; \ - \ - 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(mbuf00, 0)); \ - rte_prefetch0(RTE_MBUF_METADATA_UINT8_PTR(mbuf01, 0)); \ -} - -#define lookup2_stage1(t, g, pkts, pkt10_index, pkt11_index) \ -{ \ - struct grinder *g10, *g11; \ - uint64_t sig10, sig11, bkt10_index, bkt11_index; \ - struct rte_mbuf *mbuf10, *mbuf11; \ - struct bucket *bkt10, *bkt11, *buckets = t->buckets; \ - uint64_t bucket_mask = t->bucket_mask; \ - uint32_t signature_offset = t->signature_offset; \ - \ - mbuf10 = pkts[pkt10_index]; \ - sig10 = (uint64_t) RTE_MBUF_METADATA_UINT32(mbuf10, signature_offset);\ - bkt10_index = sig10 & bucket_mask; \ - bkt10 = &buckets[bkt10_index]; \ - \ - mbuf11 = pkts[pkt11_index]; \ - sig11 = (uint64_t) RTE_MBUF_METADATA_UINT32(mbuf11, signature_offset);\ - bkt11_index = sig11 & bucket_mask; \ - bkt11 = &buckets[bkt11_index]; \ - \ - rte_prefetch0(bkt10); \ - rte_prefetch0(bkt11); \ - \ - g10 = &g[pkt10_index]; \ - g10->sig = sig10; \ - g10->bkt = bkt10; \ - \ - g11 = &g[pkt11_index]; \ - g11->sig = sig11; \ - g11->bkt = bkt11; \ -} - -#define lookup2_stage1_dosig(t, g, pkts, pkt10_index, pkt11_index)\ -{ \ - struct grinder *g10, *g11; \ - uint64_t sig10, sig11, bkt10_index, bkt11_index; \ - struct rte_mbuf *mbuf10, *mbuf11; \ - struct bucket *bkt10, *bkt11, *buckets = t->buckets; \ - uint8_t *key10, *key11; \ - uint64_t bucket_mask = t->bucket_mask; \ - rte_table_hash_op_hash f_hash = t->f_hash; \ - uint64_t seed = t->seed; \ - uint32_t key_size = t->key_size; \ - uint32_t key_offset = t->key_offset; \ - \ - mbuf10 = pkts[pkt10_index]; \ - key10 = RTE_MBUF_METADATA_UINT8_PTR(mbuf10, key_offset);\ - sig10 = (uint64_t) f_hash(key10, key_size, seed); \ - bkt10_index = sig10 & bucket_mask; \ - bkt10 = &buckets[bkt10_index]; \ - \ - mbuf11 = pkts[pkt11_index]; \ - key11 = RTE_MBUF_METADATA_UINT8_PTR(mbuf11, key_offset);\ - sig11 = (uint64_t) f_hash(key11, key_size, seed); \ - bkt11_index = sig11 & bucket_mask; \ - bkt11 = &buckets[bkt11_index]; \ - \ - rte_prefetch0(bkt10); \ - rte_prefetch0(bkt11); \ - \ - g10 = &g[pkt10_index]; \ - g10->sig = sig10; \ - g10->bkt = bkt10; \ - \ - g11 = &g[pkt11_index]; \ - g11->sig = sig11; \ - g11->bkt = bkt11; \ -} - -#define lookup2_stage2(t, g, pkt20_index, pkt21_index, pkts_mask_match_many)\ -{ \ - struct grinder *g20, *g21; \ - uint64_t sig20, sig21; \ - struct bucket *bkt20, *bkt21; \ - uint8_t *key20, *key21, *key_mem = t->key_mem; \ - uint64_t match20, match21, match_many20, match_many21; \ - uint64_t match_pos20, match_pos21; \ - uint32_t key20_index, key21_index, key_size_shl = t->key_size_shl;\ - \ - g20 = &g[pkt20_index]; \ - sig20 = g20->sig; \ - bkt20 = g20->bkt; \ - sig20 = (sig20 >> 16) | 1LLU; \ - lookup_cmp_sig(sig20, bkt20, match20, match_many20, match_pos20);\ - match20 <<= pkt20_index; \ - match_many20 <<= pkt20_index; \ - key20_index = bkt20->key_pos[match_pos20]; \ - key20 = &key_mem[key20_index << key_size_shl]; \ - \ - g21 = &g[pkt21_index]; \ - sig21 = g21->sig; \ - bkt21 = g21->bkt; \ - sig21 = (sig21 >> 16) | 1LLU; \ - lookup_cmp_sig(sig21, bkt21, match21, match_many21, match_pos21);\ - match21 <<= pkt21_index; \ - match_many21 <<= pkt21_index; \ - key21_index = bkt21->key_pos[match_pos21]; \ - key21 = &key_mem[key21_index << key_size_shl]; \ - \ - rte_prefetch0(key20); \ - rte_prefetch0(key21); \ - \ - pkts_mask_match_many |= match_many20 | match_many21; \ - \ - g20->match = match20; \ - g20->match_pos = match_pos20; \ - g20->key_index = key20_index; \ - \ - g21->match = match21; \ - g21->match_pos = match_pos21; \ - g21->key_index = key21_index; \ -} - -#define lookup2_stage3(t, g, pkts, pkt30_index, pkt31_index, pkts_mask_out, \ - entries) \ -{ \ - struct grinder *g30, *g31; \ - struct rte_mbuf *mbuf30, *mbuf31; \ - struct bucket *bkt30, *bkt31; \ - uint8_t *key30, *key31, *key_mem = t->key_mem; \ - uint8_t *data30, *data31, *data_mem = t->data_mem; \ - uint64_t match30, match31, match_pos30, match_pos31; \ - uint64_t match_key30, match_key31, match_keys; \ - uint32_t key30_index, key31_index; \ - uint32_t key_size_shl = t->key_size_shl; \ - uint32_t data_size_shl = t->data_size_shl; \ - \ - mbuf30 = pkts[pkt30_index]; \ - g30 = &g[pkt30_index]; \ - bkt30 = g30->bkt; \ - match30 = g30->match; \ - match_pos30 = g30->match_pos; \ - key30_index = g30->key_index; \ - key30 = &key_mem[key30_index << key_size_shl]; \ - lookup_cmp_key(mbuf30, key30, match_key30, t); \ - match_key30 <<= pkt30_index; \ - match_key30 &= match30; \ - data30 = &data_mem[key30_index << data_size_shl]; \ - entries[pkt30_index] = data30; \ - \ - mbuf31 = pkts[pkt31_index]; \ - g31 = &g[pkt31_index]; \ - bkt31 = g31->bkt; \ - match31 = g31->match; \ - match_pos31 = g31->match_pos; \ - key31_index = g31->key_index; \ - key31 = &key_mem[key31_index << key_size_shl]; \ - lookup_cmp_key(mbuf31, key31, match_key31, t); \ - match_key31 <<= pkt31_index; \ - match_key31 &= match31; \ - data31 = &data_mem[key31_index << data_size_shl]; \ - entries[pkt31_index] = data31; \ - \ - rte_prefetch0(data30); \ - rte_prefetch0(data31); \ - \ - match_keys = match_key30 | match_key31; \ - pkts_mask_out |= match_keys; \ - \ - if (match_key30 == 0) \ - match_pos30 = 4; \ - lru_update(bkt30, match_pos30); \ - \ - if (match_key31 == 0) \ - match_pos31 = 4; \ - lru_update(bkt31, match_pos31); \ -} - -/*** -* The lookup function implements a 4-stage pipeline, with each stage processing -* two different packets. The purpose of pipelined implementation is to hide the -* latency of prefetching the data structures and loosen the data dependency -* between instructions. -* -* p00 _______ p10 _______ p20 _______ p30 _______ -* ----->| |----->| |----->| |----->| |-----> -* | 0 | | 1 | | 2 | | 3 | -* ----->|_______|----->|_______|----->|_______|----->|_______|-----> -* p01 p11 p21 p31 -* -* The naming convention is: -* pXY = packet Y of stage X, X = 0 .. 3, Y = 0 .. 1 -* -***/ -static int rte_table_hash_lru_lookup( - void *table, - struct rte_mbuf **pkts, - uint64_t pkts_mask, - uint64_t *lookup_hit_mask, - void **entries) -{ - struct rte_table_hash *t = (struct rte_table_hash *) table; - struct grinder *g = t->grinders; - uint64_t pkt00_index, pkt01_index, pkt10_index, pkt11_index; - uint64_t pkt20_index, pkt21_index, pkt30_index, pkt31_index; - uint64_t pkts_mask_out = 0, pkts_mask_match_many = 0; - int status = 0; - - /* Cannot run the pipeline with less than 7 packets */ - if (__builtin_popcountll(pkts_mask) < 7) - return rte_table_hash_lru_lookup_unoptimized(table, pkts, - pkts_mask, lookup_hit_mask, entries, 0); - - /* Pipeline stage 0 */ - lookup2_stage0(t, g, pkts, pkts_mask, pkt00_index, pkt01_index); - - /* Pipeline feed */ - pkt10_index = pkt00_index; - pkt11_index = pkt01_index; - - /* Pipeline stage 0 */ - lookup2_stage0(t, g, pkts, pkts_mask, pkt00_index, pkt01_index); - - /* Pipeline stage 1 */ - lookup2_stage1(t, g, pkts, pkt10_index, pkt11_index); - - /* Pipeline feed */ - pkt20_index = pkt10_index; - pkt21_index = pkt11_index; - pkt10_index = pkt00_index; - pkt11_index = pkt01_index; - - /* Pipeline stage 0 */ - lookup2_stage0(t, g, pkts, pkts_mask, pkt00_index, pkt01_index); - - /* Pipeline stage 1 */ - lookup2_stage1(t, g, pkts, pkt10_index, pkt11_index); - - /* Pipeline stage 2 */ - lookup2_stage2(t, g, pkt20_index, pkt21_index, pkts_mask_match_many); - - /* - * Pipeline run - * - */ - for ( ; pkts_mask; ) { - /* Pipeline feed */ - pkt30_index = pkt20_index; - pkt31_index = pkt21_index; - pkt20_index = pkt10_index; - pkt21_index = pkt11_index; - pkt10_index = pkt00_index; - pkt11_index = pkt01_index; - - /* Pipeline stage 0 */ - lookup2_stage0_with_odd_support(t, g, pkts, pkts_mask, - pkt00_index, pkt01_index); - - /* Pipeline stage 1 */ - lookup2_stage1(t, g, pkts, pkt10_index, pkt11_index); - - /* Pipeline stage 2 */ - lookup2_stage2(t, g, pkt20_index, pkt21_index, - pkts_mask_match_many); - - /* Pipeline stage 3 */ - lookup2_stage3(t, g, pkts, pkt30_index, pkt31_index, - pkts_mask_out, entries); - } - - /* Pipeline feed */ - pkt30_index = pkt20_index; - pkt31_index = pkt21_index; - pkt20_index = pkt10_index; - pkt21_index = pkt11_index; - pkt10_index = pkt00_index; - pkt11_index = pkt01_index; - - /* Pipeline stage 1 */ - lookup2_stage1(t, g, pkts, pkt10_index, pkt11_index); - - /* Pipeline stage 2 */ - lookup2_stage2(t, g, pkt20_index, pkt21_index, pkts_mask_match_many); - - /* Pipeline stage 3 */ - lookup2_stage3(t, g, pkts, pkt30_index, pkt31_index, pkts_mask_out, - entries); - - /* Pipeline feed */ - pkt30_index = pkt20_index; - pkt31_index = pkt21_index; - pkt20_index = pkt10_index; - pkt21_index = pkt11_index; - - /* Pipeline stage 2 */ - lookup2_stage2(t, g, pkt20_index, pkt21_index, pkts_mask_match_many); - - /* Pipeline stage 3 */ - lookup2_stage3(t, g, pkts, pkt30_index, pkt31_index, pkts_mask_out, - entries); - - /* Pipeline feed */ - pkt30_index = pkt20_index; - pkt31_index = pkt21_index; - - /* Pipeline stage 3 */ - lookup2_stage3(t, g, pkts, pkt30_index, pkt31_index, pkts_mask_out, - entries); - - /* Slow path */ - pkts_mask_match_many &= ~pkts_mask_out; - if (pkts_mask_match_many) { - uint64_t pkts_mask_out_slow = 0; - - status = rte_table_hash_lru_lookup_unoptimized(table, pkts, - pkts_mask_match_many, &pkts_mask_out_slow, entries, 0); - pkts_mask_out |= pkts_mask_out_slow; - } - - *lookup_hit_mask = pkts_mask_out; - return status; -} - -static int rte_table_hash_lru_lookup_dosig( - void *table, - struct rte_mbuf **pkts, - uint64_t pkts_mask, - uint64_t *lookup_hit_mask, - void **entries) -{ - struct rte_table_hash *t = (struct rte_table_hash *) table; - struct grinder *g = t->grinders; - uint64_t pkt00_index, pkt01_index, pkt10_index, pkt11_index; - uint64_t pkt20_index, pkt21_index, pkt30_index, pkt31_index; - uint64_t pkts_mask_out = 0, pkts_mask_match_many = 0; - int status = 0; - - /* Cannot run the pipeline with less than 7 packets */ - if (__builtin_popcountll(pkts_mask) < 7) - return rte_table_hash_lru_lookup_unoptimized(table, pkts, - pkts_mask, lookup_hit_mask, entries, 1); - - /* Pipeline stage 0 */ - lookup2_stage0(t, g, pkts, pkts_mask, pkt00_index, pkt01_index); - - /* Pipeline feed */ - pkt10_index = pkt00_index; - pkt11_index = pkt01_index; - - /* Pipeline stage 0 */ - lookup2_stage0(t, g, pkts, pkts_mask, pkt00_index, pkt01_index); - - /* Pipeline stage 1 */ - lookup2_stage1_dosig(t, g, pkts, pkt10_index, pkt11_index); - - /* Pipeline feed */ - pkt20_index = pkt10_index; - pkt21_index = pkt11_index; - pkt10_index = pkt00_index; - pkt11_index = pkt01_index; - - /* Pipeline stage 0 */ - lookup2_stage0(t, g, pkts, pkts_mask, pkt00_index, pkt01_index); - - /* Pipeline stage 1 */ - lookup2_stage1_dosig(t, g, pkts, pkt10_index, pkt11_index); - - /* Pipeline stage 2 */ - lookup2_stage2(t, g, pkt20_index, pkt21_index, pkts_mask_match_many); - - /* - * Pipeline run - * - */ - for ( ; pkts_mask; ) { - /* Pipeline feed */ - pkt30_index = pkt20_index; - pkt31_index = pkt21_index; - pkt20_index = pkt10_index; - pkt21_index = pkt11_index; - pkt10_index = pkt00_index; - pkt11_index = pkt01_index; - - /* Pipeline stage 0 */ - lookup2_stage0_with_odd_support(t, g, pkts, pkts_mask, - pkt00_index, pkt01_index); - - /* Pipeline stage 1 */ - lookup2_stage1_dosig(t, g, pkts, pkt10_index, pkt11_index); - - /* Pipeline stage 2 */ - lookup2_stage2(t, g, pkt20_index, pkt21_index, - pkts_mask_match_many); - - /* Pipeline stage 3 */ - lookup2_stage3(t, g, pkts, pkt30_index, pkt31_index, - pkts_mask_out, entries); - } - - /* Pipeline feed */ - pkt30_index = pkt20_index; - pkt31_index = pkt21_index; - pkt20_index = pkt10_index; - pkt21_index = pkt11_index; - pkt10_index = pkt00_index; - pkt11_index = pkt01_index; - - /* Pipeline stage 1 */ - lookup2_stage1_dosig(t, g, pkts, pkt10_index, pkt11_index); - - /* Pipeline stage 2 */ - lookup2_stage2(t, g, pkt20_index, pkt21_index, pkts_mask_match_many); - - /* Pipeline stage 3 */ - lookup2_stage3(t, g, pkts, pkt30_index, pkt31_index, pkts_mask_out, - entries); - - /* Pipeline feed */ - pkt30_index = pkt20_index; - pkt31_index = pkt21_index; - pkt20_index = pkt10_index; - pkt21_index = pkt11_index; - - /* Pipeline stage 2 */ - lookup2_stage2(t, g, pkt20_index, pkt21_index, pkts_mask_match_many); - - /* Pipeline stage 3 */ - lookup2_stage3(t, g, pkts, pkt30_index, pkt31_index, pkts_mask_out, - entries); - - /* Pipeline feed */ - pkt30_index = pkt20_index; - pkt31_index = pkt21_index; - - /* Pipeline stage 3 */ - lookup2_stage3(t, g, pkts, pkt30_index, pkt31_index, pkts_mask_out, - entries); - - /* Slow path */ - pkts_mask_match_many &= ~pkts_mask_out; - if (pkts_mask_match_many) { - uint64_t pkts_mask_out_slow = 0; - - status = rte_table_hash_lru_lookup_unoptimized(table, pkts, - pkts_mask_match_many, &pkts_mask_out_slow, entries, 1); - pkts_mask_out |= pkts_mask_out_slow; - } - - *lookup_hit_mask = pkts_mask_out; - return status; -} - -struct rte_table_ops rte_table_hash_lru_ops = { - .f_create = rte_table_hash_lru_create, - .f_free = rte_table_hash_lru_free, - .f_add = rte_table_hash_lru_entry_add, - .f_delete = rte_table_hash_lru_entry_delete, - .f_lookup = rte_table_hash_lru_lookup, -}; - -struct rte_table_ops rte_table_hash_lru_dosig_ops = { - .f_create = rte_table_hash_lru_create, - .f_free = rte_table_hash_lru_free, - .f_add = rte_table_hash_lru_entry_add, - .f_delete = rte_table_hash_lru_entry_delete, - .f_lookup = rte_table_hash_lru_lookup_dosig, -}; |