1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
3 */
4
5 #include <string.h>
6
7 #include <rte_malloc.h>
8
9 #include "rte_table_stub.h"
10
11 #ifdef RTE_TABLE_STATS_COLLECT
12
13 #define RTE_TABLE_LPM_STATS_PKTS_IN_ADD(table, val) \
14 table->stats.n_pkts_in += val
15 #define RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(table, val) \
16 table->stats.n_pkts_lookup_miss += val
17
18 #else
19
20 #define RTE_TABLE_LPM_STATS_PKTS_IN_ADD(table, val)
21 #define RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(table, val)
22
23 #endif
24
25 struct rte_table_stub {
26 struct rte_table_stats stats;
27 };
28
29 static void *
rte_table_stub_create(__rte_unused void * params,__rte_unused int socket_id,__rte_unused uint32_t entry_size)30 rte_table_stub_create(__rte_unused void *params,
31 __rte_unused int socket_id,
32 __rte_unused uint32_t entry_size)
33 {
34 struct rte_table_stub *stub;
35 uint32_t size;
36
37 size = sizeof(struct rte_table_stub);
38 stub = rte_zmalloc_socket("TABLE", size, RTE_CACHE_LINE_SIZE,
39 socket_id);
40 if (stub == NULL) {
41 RTE_LOG(ERR, TABLE,
42 "%s: Cannot allocate %u bytes for stub table\n",
43 __func__, size);
44 return NULL;
45 }
46
47 return stub;
48 }
49
50 static int
rte_table_stub_lookup(__rte_unused void * table,__rte_unused struct rte_mbuf ** pkts,__rte_unused uint64_t pkts_mask,uint64_t * lookup_hit_mask,__rte_unused void ** entries)51 rte_table_stub_lookup(
52 __rte_unused void *table,
53 __rte_unused struct rte_mbuf **pkts,
54 __rte_unused uint64_t pkts_mask,
55 uint64_t *lookup_hit_mask,
56 __rte_unused void **entries)
57 {
58 __rte_unused struct rte_table_stub *stub = (struct rte_table_stub *) table;
59 __rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
60
61 RTE_TABLE_LPM_STATS_PKTS_IN_ADD(stub, n_pkts_in);
62 *lookup_hit_mask = 0;
63 RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(stub, n_pkts_in);
64
65 return 0;
66 }
67
68 static int
rte_table_stub_stats_read(void * table,struct rte_table_stats * stats,int clear)69 rte_table_stub_stats_read(void *table, struct rte_table_stats *stats, int clear)
70 {
71 struct rte_table_stub *t = table;
72
73 if (stats != NULL)
74 memcpy(stats, &t->stats, sizeof(t->stats));
75
76 if (clear)
77 memset(&t->stats, 0, sizeof(t->stats));
78
79 return 0;
80 }
81
82 struct rte_table_ops rte_table_stub_ops = {
83 .f_create = rte_table_stub_create,
84 .f_free = NULL,
85 .f_add = NULL,
86 .f_delete = NULL,
87 .f_add_bulk = NULL,
88 .f_delete_bulk = NULL,
89 .f_lookup = rte_table_stub_lookup,
90 .f_stats = rte_table_stub_stats_read,
91 };
92