1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <string.h> 35 36 #include <rte_mbuf.h> 37 #include <rte_malloc.h> 38 39 #include "rte_table_stub.h" 40 41 #ifdef RTE_TABLE_STATS_COLLECT 42 43 #define RTE_TABLE_LPM_STATS_PKTS_IN_ADD(table, val) \ 44 table->stats.n_pkts_in += val 45 #define RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(table, val) \ 46 table->stats.n_pkts_lookup_miss += val 47 48 #else 49 50 #define RTE_TABLE_LPM_STATS_PKTS_IN_ADD(table, val) 51 #define RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(table, val) 52 53 #endif 54 55 struct rte_table_stub { 56 struct rte_table_stats stats; 57 }; 58 59 static void * 60 rte_table_stub_create(__rte_unused void *params, 61 __rte_unused int socket_id, 62 __rte_unused uint32_t entry_size) 63 { 64 struct rte_table_stub *stub; 65 uint32_t size; 66 67 size = sizeof(struct rte_table_stub); 68 stub = rte_zmalloc_socket("TABLE", size, RTE_CACHE_LINE_SIZE, 69 socket_id); 70 if (stub == NULL) { 71 RTE_LOG(ERR, TABLE, 72 "%s: Cannot allocate %u bytes for stub table\n", 73 __func__, size); 74 return NULL; 75 } 76 77 return stub; 78 } 79 80 static int 81 rte_table_stub_lookup( 82 __rte_unused void *table, 83 __rte_unused struct rte_mbuf **pkts, 84 __rte_unused uint64_t pkts_mask, 85 uint64_t *lookup_hit_mask, 86 __rte_unused void **entries) 87 { 88 __rte_unused struct rte_table_stub *stub = (struct rte_table_stub *) table; 89 __rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask); 90 91 RTE_TABLE_LPM_STATS_PKTS_IN_ADD(stub, n_pkts_in); 92 *lookup_hit_mask = 0; 93 RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(stub, n_pkts_in); 94 95 return 0; 96 } 97 98 static int 99 rte_table_stub_stats_read(void *table, struct rte_table_stats *stats, int clear) 100 { 101 struct rte_table_stub *t = table; 102 103 if (stats != NULL) 104 memcpy(stats, &t->stats, sizeof(t->stats)); 105 106 if (clear) 107 memset(&t->stats, 0, sizeof(t->stats)); 108 109 return 0; 110 } 111 112 struct rte_table_ops rte_table_stub_ops = { 113 .f_create = rte_table_stub_create, 114 .f_free = NULL, 115 .f_add = NULL, 116 .f_delete = NULL, 117 .f_add_bulk = NULL, 118 .f_delete_bulk = NULL, 119 .f_lookup = rte_table_stub_lookup, 120 .f_stats = rte_table_stub_stats_read, 121 }; 122