drivers/staging/lustre/lnet/selftest/ping_test.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2012, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lnet/selftest/conctl.c
  37  *
  38  * Test client & Server
  39  *
  40  * Author: Liang Zhen <liangzhen@clusterfs.com>
  41  */
  42
  43 #include "selftest.h"
  44
  45 #define LST_PING_TEST_MAGIC     0xbabeface
  46
  47 static int ping_srv_workitems = SFW_TEST_WI_MAX;
  48 module_param(ping_srv_workitems, int, 0644);
  49 MODULE_PARM_DESC(ping_srv_workitems, "# PING server workitems");
  50
  51 typedef struct {
  52         spinlock_t      pnd_lock;       /* serialize */
  53         int             pnd_counter;    /* sequence counter */
  54 } lst_ping_data_t;
  55
  56 static lst_ping_data_t  lst_ping_data;
  57
  58 static int
  59 ping_client_init(sfw_test_instance_t *tsi)
  60 {
  61         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  62
  63         LASSERT(tsi->tsi_is_client);
  64         LASSERT(sn && (sn->sn_features & ~LST_FEATS_MASK) == 0);
  65
  66         spin_lock_init(&lst_ping_data.pnd_lock);
  67         lst_ping_data.pnd_counter = 0;
  68
  69         return 0;
  70 }
  71
  72 static void
  73 ping_client_fini(sfw_test_instance_t *tsi)
  74 {
  75         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  76         int errors;
  77
  78         LASSERT(sn);
  79         LASSERT(tsi->tsi_is_client);
  80
  81         errors = atomic_read(&sn->sn_ping_errors);
  82         if (errors)
  83                 CWARN("%d pings have failed.\n", errors);
  84         else
  85                 CDEBUG(D_NET, "Ping test finished OK.\n");
  86 }
  87
  88 static int
  89 ping_client_prep_rpc(sfw_test_unit_t *tsu,
  90                      lnet_process_id_t dest, srpc_client_rpc_t **rpc)
  91 {
  92         srpc_ping_reqst_t *req;
  93         sfw_test_instance_t *tsi = tsu->tsu_instance;
  94         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  95         struct timespec64 ts;
  96         int rc;
  97
  98         LASSERT(sn);
  99         LASSERT((sn->sn_features & ~LST_FEATS_MASK) == 0);
 100
 101         rc = sfw_create_test_rpc(tsu, dest, sn->sn_features, 0, 0, rpc);
 102         if (rc != 0)
 103                 return rc;
 104
 105         req = &(*rpc)->crpc_reqstmsg.msg_body.ping_reqst;
 106
 107         req->pnr_magic = LST_PING_TEST_MAGIC;
 108
 109         spin_lock(&lst_ping_data.pnd_lock);
 110         req->pnr_seq = lst_ping_data.pnd_counter++;
 111         spin_unlock(&lst_ping_data.pnd_lock);
 112
 113         ktime_get_real_ts64(&ts);
 114         req->pnr_time_sec  = ts.tv_sec;
 115         req->pnr_time_usec = ts.tv_nsec / NSEC_PER_USEC;
 116
 117         return rc;
 118 }
 119
 120 static void
 121 ping_client_done_rpc(sfw_test_unit_t *tsu, srpc_client_rpc_t *rpc)
 122 {
 123         sfw_test_instance_t *tsi = tsu->tsu_instance;
 124         sfw_session_t *sn = tsi->tsi_batch->bat_session;
 125         srpc_ping_reqst_t *reqst = &rpc->crpc_reqstmsg.msg_body.ping_reqst;
 126         srpc_ping_reply_t *reply = &rpc->crpc_replymsg.msg_body.ping_reply;
 127         struct timespec64 ts;
 128
 129         LASSERT(sn);
 130
 131         if (rpc->crpc_status != 0) {
 132                 if (!tsi->tsi_stopping) /* rpc could have been aborted */
 133                         atomic_inc(&sn->sn_ping_errors);
 134                 CERROR("Unable to ping %s (%d): %d\n",
 135                        libcfs_id2str(rpc->crpc_dest),
 136                        reqst->pnr_seq, rpc->crpc_status);
 137                 return;
 138         }
 139
 140         if (rpc->crpc_replymsg.msg_magic != SRPC_MSG_MAGIC) {
 141                 __swab32s(&reply->pnr_seq);
 142                 __swab32s(&reply->pnr_magic);
 143                 __swab32s(&reply->pnr_status);
 144         }
 145
 146         if (reply->pnr_magic != LST_PING_TEST_MAGIC) {
 147                 rpc->crpc_status = -EBADMSG;
 148                 atomic_inc(&sn->sn_ping_errors);
 149                 CERROR("Bad magic %u from %s, %u expected.\n",
 150                        reply->pnr_magic, libcfs_id2str(rpc->crpc_dest),
 151                        LST_PING_TEST_MAGIC);
 152                 return;
 153         }
 154
 155         if (reply->pnr_seq != reqst->pnr_seq) {
 156                 rpc->crpc_status = -EBADMSG;
 157                 atomic_inc(&sn->sn_ping_errors);
 158                 CERROR("Bad seq %u from %s, %u expected.\n",
 159                        reply->pnr_seq, libcfs_id2str(rpc->crpc_dest),
 160                        reqst->pnr_seq);
 161                 return;
 162         }
 163
 164         ktime_get_real_ts64(&ts);
 165         CDEBUG(D_NET, "%d reply in %u usec\n", reply->pnr_seq,
 166                (unsigned)((ts.tv_sec - reqst->pnr_time_sec) * 1000000 +
 167                           (ts.tv_nsec / NSEC_PER_USEC - reqst->pnr_time_usec)));
 168         return;
 169 }
 170
 171 static int
 172 ping_server_handle(struct srpc_server_rpc *rpc)
 173 {
 174         struct srpc_service *sv  = rpc->srpc_scd->scd_svc;
 175         srpc_msg_t *reqstmsg = &rpc->srpc_reqstbuf->buf_msg;
 176         srpc_msg_t *replymsg = &rpc->srpc_replymsg;
 177         srpc_ping_reqst_t *req = &reqstmsg->msg_body.ping_reqst;
 178         srpc_ping_reply_t *rep = &rpc->srpc_replymsg.msg_body.ping_reply;
 179
 180         LASSERT(sv->sv_id == SRPC_SERVICE_PING);
 181
 182         if (reqstmsg->msg_magic != SRPC_MSG_MAGIC) {
 183                 LASSERT(reqstmsg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 184
 185                 __swab32s(&req->pnr_seq);
 186                 __swab32s(&req->pnr_magic);
 187                 __swab64s(&req->pnr_time_sec);
 188                 __swab64s(&req->pnr_time_usec);
 189         }
 190         LASSERT(reqstmsg->msg_type == srpc_service2request(sv->sv_id));
 191
 192         if (req->pnr_magic != LST_PING_TEST_MAGIC) {
 193                 CERROR("Unexpected magic %08x from %s\n",
 194                        req->pnr_magic, libcfs_id2str(rpc->srpc_peer));
 195                 return -EINVAL;
 196         }
 197
 198         rep->pnr_seq   = req->pnr_seq;
 199         rep->pnr_magic = LST_PING_TEST_MAGIC;
 200
 201         if ((reqstmsg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 202                 replymsg->msg_ses_feats = LST_FEATS_MASK;
 203                 rep->pnr_status = EPROTO;
 204                 return 0;
 205         }
 206
 207         replymsg->msg_ses_feats = reqstmsg->msg_ses_feats;
 208
 209         CDEBUG(D_NET, "Get ping %d from %s\n",
 210                req->pnr_seq, libcfs_id2str(rpc->srpc_peer));
 211         return 0;
 212 }
 213
 214 sfw_test_client_ops_t ping_test_client;
 215 void ping_init_test_client(void)
 216 {
 217         ping_test_client.tso_init     = ping_client_init;
 218         ping_test_client.tso_fini     = ping_client_fini;
 219         ping_test_client.tso_prep_rpc = ping_client_prep_rpc;
 220         ping_test_client.tso_done_rpc = ping_client_done_rpc;
 221 }
 222
 223 srpc_service_t ping_test_service;
 224 void ping_init_test_service(void)
 225 {
 226         ping_test_service.sv_id       = SRPC_SERVICE_PING;
 227         ping_test_service.sv_name     = "ping_test";
 228         ping_test_service.sv_handler  = ping_server_handle;
 229         ping_test_service.sv_wi_total = ping_srv_workitems;
 230 }