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 RDSV3_DEFINE_PER_CPU(struct rdsv3_statistics, rdsv3_stats); 49 50 static char *rdsv3_stat_names[] = { 51 "conn_reset", 52 "recv_drop_bad_checksum", 53 "recv_drop_old_seq", 54 "recv_drop_no_sock", 55 "recv_drop_dead_sock", 56 "recv_deliver_raced", 57 "recv_delivered", 58 "recv_queued", 59 "recv_immediate_retry", 60 "recv_delayed_retry", 61 "recv_ack_required", 62 "recv_rdma_bytes", 63 "recv_ping", 64 "send_queue_empty", 65 "send_queue_full", 66 "send_sem_contention", 67 "send_sem_queue_raced", 68 "send_immediate_retry", 69 "send_delayed_retry", 70 "send_drop_acked", 71 "send_ack_required", 72 "send_queued", 73 "send_rdma", 74 "send_rdma_bytes", 75 "send_pong", 76 "page_remainder_hit", 77 "page_remainder_miss", 78 "copy_to_user", 79 "copy_from_user", 80 "cong_update_queued", 81 "cong_update_received", 82 "cong_send_error", 83 "cong_send_blocked", 84 }; 85 86 void 87 rdsv3_stats_info_copy(struct rdsv3_info_iterator *iter, 88 uint64_t *values, char **names, size_t nr) 89 { 90 struct rdsv3_info_counter ctr; 91 size_t i; 92 93 for (i = 0; i < nr; i++) { 94 ASSERT(!(strlen(names[i]) >= sizeof (ctr.name))); 95 (void) strncpy((char *)ctr.name, names[i], 96 sizeof (ctr.name) - 1); 97 ctr.value = values[i]; 98 99 rdsv3_info_copy(iter, &ctr, sizeof (ctr)); 100 } 101 } 102 103 /* 104 * This gives global counters across all the transports. The strings 105 * are copied in so that the tool doesn't need knowledge of the specific 106 * stats that we're exporting. Some are pretty implementation dependent 107 * and may change over time. That doesn't stop them from being useful. 108 * 109 * This is the only function in the chain that knows about the byte granular 110 * length in userspace. It converts it to number of stat entries that the 111 * rest of the functions operate in. 112 */ 113 /* ARGSUSED */ 114 static void 115 rdsv3_stats_info(struct rsock *sock, unsigned int len, 116 struct rdsv3_info_iterator *iter, 117 struct rdsv3_info_lengths *lens) 118 { 119 struct rdsv3_statistics stats; 120 uint64_t *src; 121 uint64_t *sum; 122 size_t i; 123 int cpu; 124 unsigned int avail; 125 126 avail = len / sizeof (struct rdsv3_info_counter); 127 128 if (avail < ARRAY_SIZE(rdsv3_stat_names)) { 129 avail = 0; 130 goto trans; 131 } 132 133 bzero(&stats, sizeof (struct rdsv3_statistics)); 134 135 for (cpu = 0; cpu < NR_CPUS; cpu++) { 136 src = (uint64_t *)&(rdsv3_per_cpu(rdsv3_stats, cpu)); 137 sum = (uint64_t *)&stats; 138 for (i = 0; 139 i < sizeof (struct rdsv3_statistics) / sizeof (uint64_t); 140 i++) 141 *(sum++) += *(src++); 142 } 143 144 rdsv3_stats_info_copy(iter, (uint64_t *)&stats, rdsv3_stat_names, 145 ARRAY_SIZE(rdsv3_stat_names)); 146 avail -= ARRAY_SIZE(rdsv3_stat_names); 147 148 trans: 149 lens->each = sizeof (struct rdsv3_info_counter); 150 lens->nr = rdsv3_trans_stats_info_copy(iter, avail) + 151 ARRAY_SIZE(rdsv3_stat_names); 152 } 153 154 void 155 rdsv3_stats_exit(void) 156 { 157 rdsv3_info_deregister_func(RDSV3_INFO_COUNTERS, rdsv3_stats_info); 158 } 159 160 int 161 rdsv3_stats_init(void) 162 { 163 rdsv3_info_register_func(RDSV3_INFO_COUNTERS, rdsv3_stats_info); 164 return (0); 165 } 166