table: add exact match SWX table

Add the exact match table type for the SWX pipeline. Used under the
hood by the SWX pipeline table instruction.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
This commit is contained in:
Cristian Dumitrescu 2020-10-01 11:20:03 +01:00 committed by David Marchand
parent 394813eb60
commit d0a0096661
5 changed files with 895 additions and 3 deletions

View File

@ -175,7 +175,8 @@ The public API headers are grouped by topics:
[ethdev] (@ref rte_swx_port_ethdev.h),
[src/sink] (@ref rte_swx_port_source_sink.h)
* SWX table:
[table] (@ref rte_swx_table.h)
[table] (@ref rte_swx_table.h),
[table_em] (@ref rte_swx_table_em.h)
* [graph] (@ref rte_graph.h):
[graph_worker] (@ref rte_graph_worker.h)
* graph_nodes:

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@ -11,7 +11,8 @@ sources = files('rte_table_acl.c',
'rte_table_hash_ext.c',
'rte_table_hash_lru.c',
'rte_table_array.c',
'rte_table_stub.c')
'rte_table_stub.c',
'rte_swx_table_em.c',)
headers = files('rte_table.h',
'rte_table_acl.h',
'rte_table_lpm.h',
@ -23,7 +24,8 @@ headers = files('rte_table.h',
'rte_lru.h',
'rte_table_array.h',
'rte_table_stub.h',
'rte_swx_table.h',)
'rte_swx_table.h',
'rte_swx_table_em.h',)
deps += ['mbuf', 'port', 'lpm', 'hash', 'acl']
if arch_subdir == 'x86'

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@ -0,0 +1,851 @@
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2020 Intel Corporation
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <rte_common.h>
#include <rte_prefetch.h>
#include "rte_swx_table_em.h"
#define CHECK(condition, err_code) \
do { \
if (!(condition)) \
return -(err_code); \
} while (0)
#ifndef RTE_SWX_TABLE_EM_USE_HUGE_PAGES
#define RTE_SWX_TABLE_EM_USE_HUGE_PAGES 1
#endif
#if RTE_SWX_TABLE_EM_USE_HUGE_PAGES
#include <rte_malloc.h>
static void *
env_malloc(size_t size, size_t alignment, int numa_node)
{
return rte_zmalloc_socket(NULL, size, alignment, numa_node);
}
static void
env_free(void *start, size_t size __rte_unused)
{
rte_free(start);
}
#else
#include <numa.h>
static void *
env_malloc(size_t size, size_t alignment __rte_unused, int numa_node)
{
return numa_alloc_onnode(size, numa_node);
}
static void
env_free(void *start, size_t size)
{
numa_free(start, size);
}
#endif
#if defined(RTE_ARCH_X86_64)
#include <x86intrin.h>
#define crc32_u64(crc, v) _mm_crc32_u64(crc, v)
#else
static inline uint64_t
crc32_u64_generic(uint64_t crc, uint64_t value)
{
int i;
crc = (crc & 0xFFFFFFFFLLU) ^ value;
for (i = 63; i >= 0; i--) {
uint64_t mask;
mask = -(crc & 1LLU);
crc = (crc >> 1LLU) ^ (0x82F63B78LLU & mask);
}
return crc;
}
#define crc32_u64(crc, v) crc32_u64_generic(crc, v)
#endif
/* Key size needs to be one of: 8, 16, 32 or 64. */
static inline uint32_t
hash(void *key, void *key_mask, uint32_t key_size, uint32_t seed)
{
uint64_t *k = key;
uint64_t *m = key_mask;
uint64_t k0, k2, k5, crc0, crc1, crc2, crc3, crc4, crc5;
switch (key_size) {
case 8:
crc0 = crc32_u64(seed, k[0] & m[0]);
return crc0;
case 16:
k0 = k[0] & m[0];
crc0 = crc32_u64(k0, seed);
crc1 = crc32_u64(k0 >> 32, k[1] & m[1]);
crc0 ^= crc1;
return crc0;
case 32:
k0 = k[0] & m[0];
k2 = k[2] & m[2];
crc0 = crc32_u64(k0, seed);
crc1 = crc32_u64(k0 >> 32, k[1] & m[1]);
crc2 = crc32_u64(k2, k[3] & m[3]);
crc3 = k2 >> 32;
crc0 = crc32_u64(crc0, crc1);
crc1 = crc32_u64(crc2, crc3);
crc0 ^= crc1;
return crc0;
case 64:
k0 = k[0] & m[0];
k2 = k[2] & m[2];
k5 = k[5] & m[5];
crc0 = crc32_u64(k0, seed);
crc1 = crc32_u64(k0 >> 32, k[1] & m[1]);
crc2 = crc32_u64(k2, k[3] & m[3]);
crc3 = crc32_u64(k2 >> 32, k[4] & m[4]);
crc4 = crc32_u64(k5, k[6] & m[6]);
crc5 = crc32_u64(k5 >> 32, k[7] & m[7]);
crc0 = crc32_u64(crc0, (crc1 << 32) ^ crc2);
crc1 = crc32_u64(crc3, (crc4 << 32) ^ crc5);
crc0 ^= crc1;
return crc0;
default:
crc0 = 0;
return crc0;
}
}
/* n_bytes needs to be a multiple of 8 bytes. */
static void
keycpy(void *dst, void *src, void *src_mask, uint32_t n_bytes)
{
uint64_t *dst64 = dst, *src64 = src, *src_mask64 = src_mask;
uint32_t i;
for (i = 0; i < n_bytes / sizeof(uint64_t); i++)
dst64[i] = src64[i] & src_mask64[i];
}
/*
* Return: 0 = Keys are NOT equal; 1 = Keys are equal.
*/
static inline uint32_t
keycmp(void *a, void *b, void *b_mask, uint32_t n_bytes)
{
uint64_t *a64 = a, *b64 = b, *b_mask64 = b_mask;
switch (n_bytes) {
case 8: {
uint64_t xor0 = a64[0] ^ (b64[0] & b_mask64[0]);
uint32_t result = 1;
if (xor0)
result = 0;
return result;
}
case 16: {
uint64_t xor0 = a64[0] ^ (b64[0] & b_mask64[0]);
uint64_t xor1 = a64[1] ^ (b64[1] & b_mask64[1]);
uint64_t or = xor0 | xor1;
uint32_t result = 1;
if (or)
result = 0;
return result;
}
case 32: {
uint64_t xor0 = a64[0] ^ (b64[0] & b_mask64[0]);
uint64_t xor1 = a64[1] ^ (b64[1] & b_mask64[1]);
uint64_t xor2 = a64[2] ^ (b64[2] & b_mask64[2]);
uint64_t xor3 = a64[3] ^ (b64[3] & b_mask64[3]);
uint64_t or = (xor0 | xor1) | (xor2 | xor3);
uint32_t result = 1;
if (or)
result = 0;
return result;
}
case 64: {
uint64_t xor0 = a64[0] ^ (b64[0] & b_mask64[0]);
uint64_t xor1 = a64[1] ^ (b64[1] & b_mask64[1]);
uint64_t xor2 = a64[2] ^ (b64[2] & b_mask64[2]);
uint64_t xor3 = a64[3] ^ (b64[3] & b_mask64[3]);
uint64_t xor4 = a64[4] ^ (b64[4] & b_mask64[4]);
uint64_t xor5 = a64[5] ^ (b64[5] & b_mask64[5]);
uint64_t xor6 = a64[6] ^ (b64[6] & b_mask64[6]);
uint64_t xor7 = a64[7] ^ (b64[7] & b_mask64[7]);
uint64_t or = ((xor0 | xor1) | (xor2 | xor3)) |
((xor4 | xor5) | (xor6 | xor7));
uint32_t result = 1;
if (or)
result = 0;
return result;
}
default: {
uint32_t i;
for (i = 0; i < n_bytes / sizeof(uint64_t); i++)
if (a64[i] != (b64[i] & b_mask64[i]))
return 0;
return 1;
}
}
}
#define KEYS_PER_BUCKET 4
struct bucket_extension {
struct bucket_extension *next;
uint16_t sig[KEYS_PER_BUCKET];
uint32_t key_id[KEYS_PER_BUCKET];
};
struct table {
/* Input parameters */
struct rte_swx_table_params params;
/* Internal. */
uint32_t key_size;
uint32_t data_size;
uint32_t key_size_shl;
uint32_t data_size_shl;
uint32_t n_buckets;
uint32_t n_buckets_ext;
uint32_t key_stack_tos;
uint32_t bkt_ext_stack_tos;
uint64_t total_size;
/* Memory arrays. */
uint8_t *key_mask;
struct bucket_extension *buckets;
struct bucket_extension *buckets_ext;
uint8_t *keys;
uint32_t *key_stack;
uint32_t *bkt_ext_stack;
uint8_t *data;
};
static inline uint8_t *
table_key(struct table *t, uint32_t key_id)
{
return &t->keys[(uint64_t)key_id << t->key_size_shl];
}
static inline uint64_t *
table_key_data(struct table *t, uint32_t key_id)
{
return (uint64_t *)&t->data[(uint64_t)key_id << t->data_size_shl];
}
static inline int
bkt_is_empty(struct bucket_extension *bkt)
{
return (!bkt->sig[0] && !bkt->sig[1] && !bkt->sig[2] && !bkt->sig[2]) ?
1 : 0;
}
/* Return:
* 0 = Bucket key position is NOT empty;
* 1 = Bucket key position is empty.
*/
static inline int
bkt_key_is_empty(struct bucket_extension *bkt, uint32_t bkt_pos)
{
return bkt->sig[bkt_pos] ? 0 : 1;
}
/* Return: 0 = Keys are NOT equal; 1 = Keys are equal. */
static inline int
bkt_keycmp(struct table *t,
struct bucket_extension *bkt,
uint8_t *input_key,
uint32_t bkt_pos,
uint32_t input_sig)
{
uint32_t bkt_key_id;
uint8_t *bkt_key;
/* Key signature comparison. */
if (input_sig != bkt->sig[bkt_pos])
return 0;
/* Key comparison. */
bkt_key_id = bkt->key_id[bkt_pos];
bkt_key = table_key(t, bkt_key_id);
return keycmp(bkt_key, input_key, t->key_mask, t->key_size);
}
static inline void
bkt_key_install(struct table *t,
struct bucket_extension *bkt,
struct rte_swx_table_entry *input,
uint32_t bkt_pos,
uint32_t bkt_key_id,
uint32_t input_sig)
{
uint8_t *bkt_key;
uint64_t *bkt_data;
/* Key signature. */
bkt->sig[bkt_pos] = (uint16_t)input_sig;
/* Key. */
bkt->key_id[bkt_pos] = bkt_key_id;
bkt_key = table_key(t, bkt_key_id);
keycpy(bkt_key, input->key, t->key_mask, t->key_size);
/* Key data. */
bkt_data = table_key_data(t, bkt_key_id);
bkt_data[0] = input->action_id;
if (t->params.action_data_size)
memcpy(&bkt_data[1],
input->action_data,
t->params.action_data_size);
}
static inline void
bkt_key_data_update(struct table *t,
struct bucket_extension *bkt,
struct rte_swx_table_entry *input,
uint32_t bkt_pos)
{
uint32_t bkt_key_id;
uint64_t *bkt_data;
/* Key. */
bkt_key_id = bkt->key_id[bkt_pos];
/* Key data. */
bkt_data = table_key_data(t, bkt_key_id);
bkt_data[0] = input->action_id;
if (t->params.action_data_size)
memcpy(&bkt_data[1],
input->action_data,
t->params.action_data_size);
}
#define CL RTE_CACHE_LINE_ROUNDUP
static int
__table_create(struct table **table,
uint64_t *memory_footprint,
struct rte_swx_table_params *params,
const char *args __rte_unused,
int numa_node)
{
struct table *t;
uint8_t *memory;
size_t table_meta_sz, key_mask_sz, bucket_sz, bucket_ext_sz, key_sz,
key_stack_sz, bkt_ext_stack_sz, data_sz, total_size;
size_t key_mask_offset, bucket_offset, bucket_ext_offset, key_offset,
key_stack_offset, bkt_ext_stack_offset, data_offset;
uint32_t key_size, key_data_size, n_buckets, n_buckets_ext, i;
/* Check input arguments. */
CHECK(params, EINVAL);
CHECK(params->match_type == RTE_SWX_TABLE_MATCH_EXACT, EINVAL);
CHECK(params->key_size, EINVAL);
CHECK(params->key_size <= 64, EINVAL);
CHECK(params->n_keys_max, EINVAL);
/* Memory allocation. */
key_size = rte_align64pow2(params->key_size);
if (key_size < 8)
key_size = 8;
key_data_size = rte_align64pow2(params->action_data_size + 8);
n_buckets = params->n_keys_max / KEYS_PER_BUCKET;
n_buckets_ext = params->n_keys_max / KEYS_PER_BUCKET;
table_meta_sz = CL(sizeof(struct table));
key_mask_sz = CL(key_size);
bucket_sz = CL(n_buckets * sizeof(struct bucket_extension));
bucket_ext_sz = CL(n_buckets_ext * sizeof(struct bucket_extension));
key_sz = CL(params->n_keys_max * key_size);
key_stack_sz = CL(params->n_keys_max * sizeof(uint32_t));
bkt_ext_stack_sz = CL(n_buckets_ext * sizeof(uint32_t));
data_sz = CL(params->n_keys_max * key_data_size);
total_size = table_meta_sz + key_mask_sz + bucket_sz + bucket_ext_sz +
key_sz + key_stack_sz + bkt_ext_stack_sz + data_sz;
key_mask_offset = table_meta_sz;
bucket_offset = key_mask_offset + key_mask_sz;
bucket_ext_offset = bucket_offset + bucket_sz;
key_offset = bucket_ext_offset + bucket_ext_sz;
key_stack_offset = key_offset + key_sz;
bkt_ext_stack_offset = key_stack_offset + key_stack_sz;
data_offset = bkt_ext_stack_offset + bkt_ext_stack_sz;
if (!table) {
if (memory_footprint)
*memory_footprint = total_size;
return 0;
}
memory = env_malloc(total_size, RTE_CACHE_LINE_SIZE, numa_node);
CHECK(memory, ENOMEM);
memset(memory, 0, total_size);
/* Initialization. */
t = (struct table *)memory;
memcpy(&t->params, params, sizeof(*params));
t->key_size = key_size;
t->data_size = key_data_size;
t->key_size_shl = __builtin_ctzl(key_size);
t->data_size_shl = __builtin_ctzl(key_data_size);
t->n_buckets = n_buckets;
t->n_buckets_ext = n_buckets_ext;
t->total_size = total_size;
t->key_mask = &memory[key_mask_offset];
t->buckets = (struct bucket_extension *)&memory[bucket_offset];
t->buckets_ext = (struct bucket_extension *)&memory[bucket_ext_offset];
t->keys = &memory[key_offset];
t->key_stack = (uint32_t *)&memory[key_stack_offset];
t->bkt_ext_stack = (uint32_t *)&memory[bkt_ext_stack_offset];
t->data = &memory[data_offset];
t->params.key_mask0 = t->key_mask;
if (!params->key_mask0)
memset(t->key_mask, 0xFF, params->key_size);
else
memcpy(t->key_mask, params->key_mask0, params->key_size);
for (i = 0; i < t->params.n_keys_max; i++)
t->key_stack[i] = t->params.n_keys_max - 1 - i;
t->key_stack_tos = t->params.n_keys_max;
for (i = 0; i < n_buckets_ext; i++)
t->bkt_ext_stack[i] = n_buckets_ext - 1 - i;
t->bkt_ext_stack_tos = n_buckets_ext;
*table = t;
return 0;
}
static void
table_free(void *table)
{
struct table *t = table;
if (!t)
return;
env_free(t, t->total_size);
}
static int
table_add(void *table, struct rte_swx_table_entry *entry)
{
struct table *t = table;
struct bucket_extension *bkt0, *bkt, *bkt_prev;
uint32_t input_sig, bkt_id, i;
CHECK(t, EINVAL);
CHECK(entry, EINVAL);
CHECK(entry->key, EINVAL);
CHECK((!t->params.action_data_size && !entry->action_data) ||
(t->params.action_data_size && entry->action_data), EINVAL);
input_sig = hash(entry->key, t->key_mask, t->key_size, 0);
bkt_id = input_sig & (t->n_buckets - 1);
bkt0 = &t->buckets[bkt_id];
input_sig = (input_sig >> 16) | 1;
/* Key is present in the bucket. */
for (bkt = bkt0; bkt; bkt = bkt->next)
for (i = 0; i < KEYS_PER_BUCKET; i++)
if (bkt_keycmp(t, bkt, entry->key, i, input_sig)) {
bkt_key_data_update(t, bkt, entry, i);
return 0;
}
/* Key is not present in the bucket. Bucket not full. */
for (bkt = bkt0, bkt_prev = NULL; bkt; bkt_prev = bkt, bkt = bkt->next)
for (i = 0; i < KEYS_PER_BUCKET; i++)
if (bkt_key_is_empty(bkt, i)) {
uint32_t new_bkt_key_id;
/* Allocate new key & install. */
CHECK(t->key_stack_tos, ENOSPC);
new_bkt_key_id =
t->key_stack[--t->key_stack_tos];
bkt_key_install(t, bkt, entry, i,
new_bkt_key_id, input_sig);
return 0;
}
/* Bucket full: extend bucket. */
if (t->bkt_ext_stack_tos && t->key_stack_tos) {
struct bucket_extension *new_bkt;
uint32_t new_bkt_id, new_bkt_key_id;
/* Allocate new bucket extension & install. */
new_bkt_id = t->bkt_ext_stack[--t->bkt_ext_stack_tos];
new_bkt = &t->buckets_ext[new_bkt_id];
memset(new_bkt, 0, sizeof(*new_bkt));
bkt_prev->next = new_bkt;
/* Allocate new key & install. */
new_bkt_key_id = t->key_stack[--t->key_stack_tos];
bkt_key_install(t, new_bkt, entry, 0,
new_bkt_key_id, input_sig);
return 0;
}
CHECK(0, ENOSPC);
}
static int
table_del(void *table, struct rte_swx_table_entry *entry)
{
struct table *t = table;
struct bucket_extension *bkt0, *bkt, *bkt_prev;
uint32_t input_sig, bkt_id, i;
CHECK(t, EINVAL);
CHECK(entry, EINVAL);
CHECK(entry->key, EINVAL);
input_sig = hash(entry->key, t->key_mask, t->key_size, 0);
bkt_id = input_sig & (t->n_buckets - 1);
bkt0 = &t->buckets[bkt_id];
input_sig = (input_sig >> 16) | 1;
/* Key is present in the bucket. */
for (bkt = bkt0, bkt_prev = NULL; bkt; bkt_prev = bkt, bkt = bkt->next)
for (i = 0; i < KEYS_PER_BUCKET; i++)
if (bkt_keycmp(t, bkt, entry->key, i, input_sig)) {
/* Key free. */
bkt->sig[i] = 0;
t->key_stack[t->key_stack_tos++] =
bkt->key_id[i];
/* Bucket extension free if empty and not the
* 1st in bucket.
*/
if (bkt_prev && bkt_is_empty(bkt)) {
bkt_prev->next = bkt->next;
bkt_id = bkt - t->buckets_ext;
t->bkt_ext_stack[t->bkt_ext_stack_tos++]
= bkt_id;
}
return 0;
}
return 0;
}
static uint64_t
table_mailbox_size_get_unoptimized(void)
{
return 0;
}
static int
table_lookup_unoptimized(void *table,
void *mailbox __rte_unused,
uint8_t **key,
uint64_t *action_id,
uint8_t **action_data,
int *hit)
{
struct table *t = table;
struct bucket_extension *bkt0, *bkt;
uint8_t *input_key;
uint32_t input_sig, bkt_id, i;
input_key = &(*key)[t->params.key_offset];
input_sig = hash(input_key, t->key_mask, t->key_size, 0);
bkt_id = input_sig & (t->n_buckets - 1);
bkt0 = &t->buckets[bkt_id];
input_sig = (input_sig >> 16) | 1;
/* Key is present in the bucket. */
for (bkt = bkt0; bkt; bkt = bkt->next)
for (i = 0; i < KEYS_PER_BUCKET; i++)
if (bkt_keycmp(t, bkt, input_key, i, input_sig)) {
uint32_t bkt_key_id;
uint64_t *bkt_data;
/* Key. */
bkt_key_id = bkt->key_id[i];
/* Key data. */
bkt_data = table_key_data(t, bkt_key_id);
*action_id = bkt_data[0];
*action_data = (uint8_t *)&bkt_data[1];
*hit = 1;
return 1;
}
*hit = 0;
return 1;
}
struct mailbox {
struct bucket_extension *bkt;
uint32_t input_sig;
uint32_t bkt_key_id;
uint32_t sig_match;
uint32_t sig_match_many;
int state;
};
static uint64_t
table_mailbox_size_get(void)
{
return sizeof(struct mailbox);
}
/*
* 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 = 0xFFFE
* match_many = 1111_1110_1110_1000 = 0xFEE8
* match_pos = 0001_0010_0001_0011__0001_0010_0001_0000 = 0x12131210
*
*/
#define LUT_MATCH 0xFFFE
#define LUT_MATCH_MANY 0xFEE8
#define LUT_MATCH_POS 0x12131210
static int
table_lookup(void *table,
void *mailbox,
uint8_t **key,
uint64_t *action_id,
uint8_t **action_data,
int *hit)
{
struct table *t = table;
struct mailbox *m = mailbox;
switch (m->state) {
case 0: {
uint8_t *input_key = &(*key)[t->params.key_offset];
struct bucket_extension *bkt;
uint32_t input_sig, bkt_id;
input_sig = hash(input_key, t->key_mask, t->key_size, 0);
bkt_id = input_sig & (t->n_buckets - 1);
bkt = &t->buckets[bkt_id];
rte_prefetch0(bkt);
m->bkt = bkt;
m->input_sig = (input_sig >> 16) | 1;
m->state++;
return 0;
}
case 1: {
struct bucket_extension *bkt = m->bkt;
uint32_t input_sig = m->input_sig;
uint32_t bkt_sig0, bkt_sig1, bkt_sig2, bkt_sig3;
uint32_t mask0 = 0, mask1 = 0, mask2 = 0, mask3 = 0, mask_all;
uint32_t sig_match = LUT_MATCH;
uint32_t sig_match_many = LUT_MATCH_MANY;
uint32_t sig_match_pos = LUT_MATCH_POS;
uint32_t bkt_key_id;
bkt_sig0 = input_sig ^ bkt->sig[0];
if (bkt_sig0)
mask0 = 1 << 0;
bkt_sig1 = input_sig ^ bkt->sig[1];
if (bkt_sig1)
mask1 = 1 << 1;
bkt_sig2 = input_sig ^ bkt->sig[2];
if (bkt_sig2)
mask2 = 1 << 2;
bkt_sig3 = input_sig ^ bkt->sig[3];
if (bkt_sig3)
mask3 = 1 << 3;
mask_all = (mask0 | mask1) | (mask2 | mask3);
sig_match = (sig_match >> mask_all) & 1;
sig_match_many = (sig_match_many >> mask_all) & 1;
sig_match_pos = (sig_match_pos >> (mask_all << 1)) & 3;
bkt_key_id = bkt->key_id[sig_match_pos];
rte_prefetch0(table_key(t, bkt_key_id));
rte_prefetch0(table_key_data(t, bkt_key_id));
m->bkt_key_id = bkt_key_id;
m->sig_match = sig_match;
m->sig_match_many = sig_match_many;
m->state++;
return 0;
}
case 2: {
uint8_t *input_key = &(*key)[t->params.key_offset];
struct bucket_extension *bkt = m->bkt;
uint32_t bkt_key_id = m->bkt_key_id;
uint8_t *bkt_key = table_key(t, bkt_key_id);
uint64_t *bkt_data = table_key_data(t, bkt_key_id);
uint32_t lkp_hit;
lkp_hit = keycmp(bkt_key, input_key, t->key_mask, t->key_size);
lkp_hit &= m->sig_match;
*action_id = bkt_data[0];
*action_data = (uint8_t *)&bkt_data[1];
*hit = lkp_hit;
m->state = 0;
if (!lkp_hit && (m->sig_match_many || bkt->next))
return table_lookup_unoptimized(t,
m,
key,
action_id,
action_data,
hit);
return 1;
}
default:
return 0;
}
}
static void *
table_create(struct rte_swx_table_params *params,
struct rte_swx_table_entry_list *entries,
const char *args,
int numa_node)
{
struct table *t;
struct rte_swx_table_entry *entry;
int status;
/* Table create. */
status = __table_create(&t, NULL, params, args, numa_node);
if (status)
return NULL;
/* Table add entries. */
if (!entries)
return t;
TAILQ_FOREACH(entry, entries, node) {
int status;
status = table_add(t, entry);
if (status) {
table_free(t);
return NULL;
}
}
return t;
}
static uint64_t
table_footprint(struct rte_swx_table_params *params,
struct rte_swx_table_entry_list *entries __rte_unused,
const char *args)
{
uint64_t memory_footprint;
int status;
status = __table_create(NULL, &memory_footprint, params, args, 0);
if (status)
return 0;
return memory_footprint;
}
struct rte_swx_table_ops rte_swx_table_exact_match_unoptimized_ops = {
.footprint_get = table_footprint,
.mailbox_size_get = table_mailbox_size_get_unoptimized,
.create = table_create,
.add = table_add,
.del = table_del,
.lkp = table_lookup_unoptimized,
.free = table_free,
};
struct rte_swx_table_ops rte_swx_table_exact_match_ops = {
.footprint_get = table_footprint,
.mailbox_size_get = table_mailbox_size_get,
.create = table_create,
.add = table_add,
.del = table_del,
.lkp = table_lookup,
.free = table_free,
};

View File

@ -0,0 +1,30 @@
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2020 Intel Corporation
*/
#ifndef __INCLUDE_RTE_SWX_TABLE_EM_H__
#define __INCLUDE_RTE_SWX_TABLE_EM_H__
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file
* RTE SWX Exact Match Table
*/
#include <stdint.h>
#include <rte_swx_table.h>
/** Exact match table operations - unoptimized. */
extern struct rte_swx_table_ops rte_swx_table_exact_match_unoptimized_ops;
/** Exact match table operations. */
extern struct rte_swx_table_ops rte_swx_table_exact_match_ops;
#ifdef __cplusplus
}
#endif
#endif

View File

@ -18,3 +18,11 @@ DPDK_21 {
local: *;
};
EXPERIMENTAL {
global:
# added in 20.11
rte_swx_table_exact_match_ops;
rte_swx_table_exact_match_unoptimized_ops;
};