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 * 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 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 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