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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2012, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lnet/selftest/conctl.c
  33  *
  34  * Test client & Server
  35  *
  36  * Author: Liang Zhen <liangzhen@clusterfs.com>
  37  */
  38
  39 #include "selftest.h"
  40
  41 #define LST_PING_TEST_MAGIC     0xbabeface
  42
  43 static int ping_srv_workitems = SFW_TEST_WI_MAX;
  44 module_param(ping_srv_workitems, int, 0644);
  45 MODULE_PARM_DESC(ping_srv_workitems, "# PING server workitems");
  46
  47 typedef struct {
  48         spinlock_t      pnd_lock;       /* serialize */
  49         int             pnd_counter;    /* sequence counter */
  50 } lst_ping_data_t;
  51
  52 static lst_ping_data_t  lst_ping_data;
  53
  54 static int
  55 ping_client_init(sfw_test_instance_t *tsi)
  56 {
  57         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  58
  59         LASSERT(tsi->tsi_is_client);
  60         LASSERT(sn != NULL && (sn->sn_features & ~LST_FEATS_MASK) == 0);
  61
  62         spin_lock_init(&lst_ping_data.pnd_lock);
  63         lst_ping_data.pnd_counter = 0;
  64
  65         return 0;
  66 }
  67
  68 static void
  69 ping_client_fini (sfw_test_instance_t *tsi)
  70 {
  71         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  72         int            errors;
  73
  74         LASSERT (sn != NULL);
  75         LASSERT (tsi->tsi_is_client);
  76
  77         errors = atomic_read(&sn->sn_ping_errors);
  78         if (errors)
  79                 CWARN ("%d pings have failed.\n", errors);
  80         else
  81                 CDEBUG (D_NET, "Ping test finished OK.\n");
  82 }
  83
  84 static int
  85 ping_client_prep_rpc(sfw_test_unit_t *tsu,
  86                      struct lnet_process_id dest, srpc_client_rpc_t **rpc)
  87 {
  88         srpc_ping_reqst_t   *req;
  89         sfw_test_instance_t *tsi = tsu->tsu_instance;
  90         sfw_session_t       *sn  = tsi->tsi_batch->bat_session;
  91         struct timespec64 ts;
  92         int                  rc;
  93
  94         LASSERT(sn != NULL);
  95         LASSERT((sn->sn_features & ~LST_FEATS_MASK) == 0);
  96
  97         rc = sfw_create_test_rpc(tsu, dest, sn->sn_features, 0, 0, rpc);
  98         if (rc != 0)
  99                 return rc;
 100
 101         req = &(*rpc)->crpc_reqstmsg.msg_body.ping_reqst;
 102
 103         req->pnr_magic = LST_PING_TEST_MAGIC;
 104
 105         spin_lock(&lst_ping_data.pnd_lock);
 106         req->pnr_seq = lst_ping_data.pnd_counter++;
 107         spin_unlock(&lst_ping_data.pnd_lock);
 108
 109         ktime_get_real_ts64(&ts);
 110         req->pnr_time_sec  = ts.tv_sec;
 111         req->pnr_time_nsec = ts.tv_nsec;
 112
 113         return rc;
 114 }
 115
 116 static void
 117 ping_client_done_rpc (sfw_test_unit_t *tsu, srpc_client_rpc_t *rpc)
 118 {
 119         sfw_test_instance_t *tsi = tsu->tsu_instance;
 120         sfw_session_t *sn = tsi->tsi_batch->bat_session;
 121         srpc_ping_reqst_t *reqst = &rpc->crpc_reqstmsg.msg_body.ping_reqst;
 122         srpc_ping_reply_t *reply = &rpc->crpc_replymsg.msg_body.ping_reply;
 123         struct timespec64 ts;
 124
 125         LASSERT(sn != NULL);
 126
 127         if (rpc->crpc_status != 0) {
 128                 if (!tsi->tsi_stopping) /* rpc could have been aborted */
 129                         atomic_inc(&sn->sn_ping_errors);
 130                 CERROR ("Unable to ping %s (%d): %d\n",
 131                         libcfs_id2str(rpc->crpc_dest),
 132                         reqst->pnr_seq, rpc->crpc_status);
 133                 return;
 134         }
 135
 136         if (rpc->crpc_replymsg.msg_magic != SRPC_MSG_MAGIC) {
 137                 __swab32s(&reply->pnr_seq);
 138                 __swab32s(&reply->pnr_magic);
 139                 __swab32s(&reply->pnr_status);
 140         }
 141
 142         if (reply->pnr_magic != LST_PING_TEST_MAGIC) {
 143                 rpc->crpc_status = -EBADMSG;
 144                 atomic_inc(&sn->sn_ping_errors);
 145                 CERROR ("Bad magic %u from %s, %u expected.\n",
 146                         reply->pnr_magic, libcfs_id2str(rpc->crpc_dest),
 147                         LST_PING_TEST_MAGIC);
 148                 return;
 149         }
 150
 151         if (reply->pnr_seq != reqst->pnr_seq) {
 152                 rpc->crpc_status = -EBADMSG;
 153                 atomic_inc(&sn->sn_ping_errors);
 154                 CERROR ("Bad seq %u from %s, %u expected.\n",
 155                         reply->pnr_seq, libcfs_id2str(rpc->crpc_dest),
 156                         reqst->pnr_seq);
 157                 return;
 158         }
 159
 160         ktime_get_real_ts64(&ts);
 161         CDEBUG(D_NET, "%d reply in %llu nsec\n", reply->pnr_seq,
 162                (u64)((ts.tv_sec - reqst->pnr_time_sec) * NSEC_PER_SEC +
 163                     (ts.tv_nsec - reqst->pnr_time_nsec)));
 164         return;
 165 }
 166
 167 static int
 168 ping_server_handle(struct srpc_server_rpc *rpc)
 169 {
 170         struct srpc_service     *sv  = rpc->srpc_scd->scd_svc;
 171         srpc_msg_t        *reqstmsg = &rpc->srpc_reqstbuf->buf_msg;
 172         srpc_msg_t        *replymsg = &rpc->srpc_replymsg;
 173         srpc_ping_reqst_t *req = &reqstmsg->msg_body.ping_reqst;
 174         srpc_ping_reply_t *rep = &rpc->srpc_replymsg.msg_body.ping_reply;
 175
 176         LASSERT (sv->sv_id == SRPC_SERVICE_PING);
 177
 178         if (reqstmsg->msg_magic != SRPC_MSG_MAGIC) {
 179                 LASSERT (reqstmsg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 180
 181                 __swab32s(&req->pnr_seq);
 182                 __swab32s(&req->pnr_magic);
 183                 __swab64s(&req->pnr_time_sec);
 184                 __swab64s(&req->pnr_time_nsec);
 185         }
 186         LASSERT (reqstmsg->msg_type == srpc_service2request(sv->sv_id));
 187
 188         if (req->pnr_magic != LST_PING_TEST_MAGIC) {
 189                 CERROR ("Unexpect magic %08x from %s\n",
 190                         req->pnr_magic, libcfs_id2str(rpc->srpc_peer));
 191                 return -EINVAL;
 192         }
 193
 194         rep->pnr_seq   = req->pnr_seq;
 195         rep->pnr_magic = LST_PING_TEST_MAGIC;
 196
 197         if ((reqstmsg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 198                 replymsg->msg_ses_feats = LST_FEATS_MASK;
 199                 rep->pnr_status = EPROTO;
 200                 return 0;
 201         }
 202
 203         replymsg->msg_ses_feats = reqstmsg->msg_ses_feats;
 204
 205         CDEBUG(D_NET, "Get ping %d from %s\n",
 206                req->pnr_seq, libcfs_id2str(rpc->srpc_peer));
 207         return 0;
 208 }
 209
 210 sfw_test_client_ops_t ping_test_client;
 211 void ping_init_test_client(void)
 212 {
 213         ping_test_client.tso_init     = ping_client_init;
 214         ping_test_client.tso_fini     = ping_client_fini;
 215         ping_test_client.tso_prep_rpc = ping_client_prep_rpc;
 216         ping_test_client.tso_done_rpc = ping_client_done_rpc;
 217 }
 218
 219 srpc_service_t ping_test_service;
 220 void ping_init_test_service(void)
 221 {
 222         ping_test_service.sv_id       = SRPC_SERVICE_PING;
 223         ping_test_service.sv_name     = "ping_test";
 224         ping_test_service.sv_handler  = ping_server_handle;
 225         ping_test_service.sv_wi_total = ping_srv_workitems;
 226 }