1 /* 2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 3 */ 4 5 /* 6 * This file contains code imported from the OFED rds source file stats.c 7 * Oracle elects to have and use the contents of stats.c under and governed 8 * by the OpenIB.org BSD license (see below for full license text). However, 9 * the following notice accompanied the original version of this file: 10 */ 11 12 /* 13 * Copyright (c) 2006 Oracle. All rights reserved. 14 * 15 * This software is available to you under a choice of one of two 16 * licenses. You may choose to be licensed under the terms of the GNU 17 * General Public License (GPL) Version 2, available from the file 18 * COPYING in the main directory of this source tree, or the 19 * OpenIB.org BSD license below: 20 * 21 * Redistribution and use in source and binary forms, with or 22 * without modification, are permitted provided that the following 23 * conditions are met: 24 * 25 * - Redistributions of source code must retain the above 26 * copyright notice, this list of conditions and the following 27 * disclaimer. 28 * 29 * - Redistributions in binary form must reproduce the above 30 * copyright notice, this list of conditions and the following 31 * disclaimer in the documentation and/or other materials 32 * provided with the distribution. 33 * 34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 35 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 36 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 37 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 38 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 39 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 40 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 41 * SOFTWARE. 42 * 43 */ 44 #include <sys/rds.h> 45 46 #include <sys/ib/clients/rdsv3/rdsv3.h> 47 48 struct rdsv3_statistics *rdsv3_stats = NULL; 49 uint_t nr_cpus; 50 51 static char *rdsv3_stat_names[] = { 52 "conn_reset", 53 "recv_drop_bad_checksum", 54 "recv_drop_old_seq", 55 "recv_drop_no_sock", 56 "recv_drop_dead_sock", 57 "recv_deliver_raced", 58 "recv_delivered", 59 "recv_queued", 60 "recv_immediate_retry", 61 "recv_delayed_retry", 62 "recv_ack_required", 63 "recv_rdma_bytes", 64 "recv_ping", 65 "send_queue_empty", 66 "send_queue_full", 67 "send_sem_contention", 68 "send_sem_queue_raced", 69 "send_immediate_retry", 70 "send_delayed_retry", 71 "send_drop_acked", 72 "send_ack_required", 73 "send_queued", 74 "send_rdma", 75 "send_rdma_bytes", 76 "send_pong", 77 "page_remainder_hit", 78 "page_remainder_miss", 79 "copy_to_user", 80 "copy_from_user", 81 "cong_update_queued", 82 "cong_update_received", 83 "cong_send_error", 84 "cong_send_blocked", 85 }; 86 87 void 88 rdsv3_stats_info_copy(struct rdsv3_info_iterator *iter, 89 uint64_t *values, char **names, size_t nr) 90 { 91 struct rds_info_counter ctr; 92 size_t i; 93 94 for (i = 0; i < nr; i++) { 95 ASSERT(!(strlen(names[i]) >= sizeof (ctr.name))); 96 (void) strncpy((char *)ctr.name, names[i], 97 sizeof (ctr.name) - 1); 98 ctr.value = values[i]; 99 100 rdsv3_info_copy(iter, &ctr, sizeof (ctr)); 101 } 102 } 103 104 /* 105 * This gives global counters across all the transports. The strings 106 * are copied in so that the tool doesn't need knowledge of the specific 107 * stats that we're exporting. Some are pretty implementation dependent 108 * and may change over time. That doesn't stop them from being useful. 109 * 110 * This is the only function in the chain that knows about the byte granular 111 * length in userspace. It converts it to number of stat entries that the 112 * rest of the functions operate in. 113 */ 114 /* ARGSUSED */ 115 static void 116 rdsv3_stats_info(struct rsock *sock, unsigned int len, 117 struct rdsv3_info_iterator *iter, 118 struct rdsv3_info_lengths *lens) 119 { 120 struct rdsv3_statistics stats; 121 uint64_t *src; 122 uint64_t *sum; 123 size_t i; 124 int cpu; 125 unsigned int avail; 126 127 avail = len / sizeof (struct rds_info_counter); 128 129 if (avail < ARRAY_SIZE(rdsv3_stat_names)) { 130 avail = 0; 131 goto trans; 132 } 133 134 bzero(&stats, sizeof (struct rdsv3_statistics)); 135 136 for (cpu = 0; cpu < nr_cpus; cpu++) { 137 src = (uint64_t *)&(rdsv3_per_cpu(rdsv3_stats, cpu)); 138 sum = (uint64_t *)&stats; 139 for (i = 0; 140 i < sizeof (struct rdsv3_statistics) / sizeof (uint64_t); 141 i++) 142 *(sum++) += *(src++); 143 } 144 145 rdsv3_stats_info_copy(iter, (uint64_t *)&stats, rdsv3_stat_names, 146 ARRAY_SIZE(rdsv3_stat_names)); 147 avail -= ARRAY_SIZE(rdsv3_stat_names); 148 149 trans: 150 lens->each = sizeof (struct rds_info_counter); 151 lens->nr = rdsv3_trans_stats_info_copy(iter, avail) + 152 ARRAY_SIZE(rdsv3_stat_names); 153 } 154 155 void 156 rdsv3_stats_exit(void) 157 { 158 rdsv3_info_deregister_func(RDS_INFO_COUNTERS, rdsv3_stats_info); 159 160 ASSERT(rdsv3_stats); 161 kmem_free(rdsv3_stats, 162 nr_cpus * sizeof (struct rdsv3_statistics)); 163 rdsv3_stats = NULL; 164 } 165 166 int 167 rdsv3_stats_init(void) 168 { 169 /* 170 * Note the max number of cpus that this system can have at most. 171 */ 172 nr_cpus = max_ncpus; 173 ASSERT(rdsv3_stats == NULL); 174 rdsv3_stats = kmem_zalloc(nr_cpus * 175 sizeof (struct rdsv3_statistics), KM_SLEEP); 176 177 rdsv3_info_register_func(RDS_INFO_COUNTERS, rdsv3_stats_info); 178 return (0); 179 } 180