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 /*
  31  * This file is part of Lustre, http://www.lustre.org/
  32  * Lustre is a trademark of Sun Microsystems, Inc.
  33  *
  34  * lnet/selftest/conctl.c
  35  *
  36  * Test client & Server
  37  *
  38  * Author: Liang Zhen <liangzhen@clusterfs.com>
  39  */
  40
  41 #include "selftest.h"
  42
  43 #define LST_PING_TEST_MAGIC     0xbabeface
  44
  45 int ping_srv_workitems = SFW_TEST_WI_MAX;
  46 CFS_MODULE_PARM(ping_srv_workitems, "i", int, 0644, "# PING server workitems");
  47
  48 typedef struct {
  49         cfs_spinlock_t  pnd_lock;       /* serialize */
  50         int             pnd_counter;    /* sequence counter */
  51 } lst_ping_data_t;
  52
  53 static lst_ping_data_t  lst_ping_data;
  54
  55 static int
  56 ping_client_init(sfw_test_instance_t *tsi)
  57 {
  58         LASSERT (tsi->tsi_is_client);
  59
  60         cfs_spin_lock_init(&lst_ping_data.pnd_lock);
  61         lst_ping_data.pnd_counter = 0;
  62
  63         return 0;
  64 }
  65
  66 static void
  67 ping_client_fini (sfw_test_instance_t *tsi)
  68 {
  69         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  70         int            errors;
  71
  72         LASSERT (sn != NULL);
  73         LASSERT (tsi->tsi_is_client);
  74
  75         errors = cfs_atomic_read(&sn->sn_ping_errors);
  76         if (errors)
  77                 CWARN ("%d pings have failed.\n", errors);
  78         else
  79                 CDEBUG (D_NET, "Ping test finished OK.\n");
  80 }
  81
  82 static int
  83 ping_client_prep_rpc(sfw_test_unit_t *tsu,
  84                      lnet_process_id_t dest, srpc_client_rpc_t **rpc)
  85 {
  86         srpc_ping_reqst_t *req;
  87         struct timeval     tv;
  88         int                rc;
  89
  90         rc = sfw_create_test_rpc(tsu, dest, 0, 0, rpc);
  91         if (rc != 0)
  92                 return rc;
  93
  94         req = &(*rpc)->crpc_reqstmsg.msg_body.ping_reqst;
  95
  96         req->pnr_magic = LST_PING_TEST_MAGIC;
  97
  98         cfs_spin_lock(&lst_ping_data.pnd_lock);
  99         req->pnr_seq = lst_ping_data.pnd_counter ++;
 100         cfs_spin_unlock(&lst_ping_data.pnd_lock);
 101
 102         cfs_fs_timeval(&tv);
 103         req->pnr_time_sec  = tv.tv_sec;
 104         req->pnr_time_usec = tv.tv_usec;
 105
 106         return rc;
 107 }
 108
 109 static void
 110 ping_client_done_rpc (sfw_test_unit_t *tsu, srpc_client_rpc_t *rpc)
 111 {
 112         sfw_test_instance_t *tsi = tsu->tsu_instance;
 113         sfw_session_t       *sn = tsi->tsi_batch->bat_session;
 114         srpc_ping_reqst_t   *reqst = &rpc->crpc_reqstmsg.msg_body.ping_reqst;
 115         srpc_ping_reply_t   *reply = &rpc->crpc_replymsg.msg_body.ping_reply;
 116         struct timeval       tv;
 117
 118         LASSERT (sn != NULL);
 119
 120         if (rpc->crpc_status != 0) {
 121                 if (!tsi->tsi_stopping) /* rpc could have been aborted */
 122                         cfs_atomic_inc(&sn->sn_ping_errors);
 123                 CERROR ("Unable to ping %s (%d): %d\n",
 124                         libcfs_id2str(rpc->crpc_dest),
 125                         reqst->pnr_seq, rpc->crpc_status);
 126                 return;
 127         }
 128
 129         if (rpc->crpc_replymsg.msg_magic != SRPC_MSG_MAGIC) {
 130                 __swab32s(&reply->pnr_seq);
 131                 __swab32s(&reply->pnr_magic);
 132                 __swab32s(&reply->pnr_status);
 133         }
 134
 135         if (reply->pnr_magic != LST_PING_TEST_MAGIC) {
 136                 rpc->crpc_status = -EBADMSG;
 137                 cfs_atomic_inc(&sn->sn_ping_errors);
 138                 CERROR ("Bad magic %u from %s, %u expected.\n",
 139                         reply->pnr_magic, libcfs_id2str(rpc->crpc_dest),
 140                         LST_PING_TEST_MAGIC);
 141                 return;
 142         }
 143
 144         if (reply->pnr_seq != reqst->pnr_seq) {
 145                 rpc->crpc_status = -EBADMSG;
 146                 cfs_atomic_inc(&sn->sn_ping_errors);
 147                 CERROR ("Bad seq %u from %s, %u expected.\n",
 148                         reply->pnr_seq, libcfs_id2str(rpc->crpc_dest),
 149                         reqst->pnr_seq);
 150                 return;
 151         }
 152
 153         cfs_fs_timeval(&tv);
 154         CDEBUG (D_NET, "%d reply in %u usec\n", reply->pnr_seq,
 155                 (unsigned)((tv.tv_sec - (unsigned)reqst->pnr_time_sec) * 1000000
 156                            + (tv.tv_usec - reqst->pnr_time_usec)));
 157         return;
 158 }
 159
 160 static int
 161 ping_server_handle(struct srpc_server_rpc *rpc)
 162 {
 163         struct srpc_service     *sv  = rpc->srpc_scd->scd_svc;
 164         srpc_msg_t        *reqstmsg = &rpc->srpc_reqstbuf->buf_msg;
 165         srpc_ping_reqst_t *req = &reqstmsg->msg_body.ping_reqst;
 166         srpc_ping_reply_t *rep = &rpc->srpc_replymsg.msg_body.ping_reply;
 167
 168         LASSERT (sv->sv_id == SRPC_SERVICE_PING);
 169
 170         if (reqstmsg->msg_magic != SRPC_MSG_MAGIC) {
 171                 LASSERT (reqstmsg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 172
 173                 __swab32s(&reqstmsg->msg_type);
 174                 __swab32s(&req->pnr_seq);
 175                 __swab32s(&req->pnr_magic);
 176                 __swab64s(&req->pnr_time_sec);
 177                 __swab64s(&req->pnr_time_usec);
 178         }
 179         LASSERT (reqstmsg->msg_type == srpc_service2request(sv->sv_id));
 180
 181         if (req->pnr_magic != LST_PING_TEST_MAGIC) {
 182                 CERROR ("Unexpect magic %08x from %s\n",
 183                         req->pnr_magic, libcfs_id2str(rpc->srpc_peer));
 184                 return -EINVAL;
 185         }
 186
 187         rep->pnr_seq   = req->pnr_seq;
 188         rep->pnr_magic = LST_PING_TEST_MAGIC;
 189
 190         CDEBUG (D_NET, "Get ping %d from %s\n",
 191                 req->pnr_seq, libcfs_id2str(rpc->srpc_peer));
 192         return 0;
 193 }
 194
 195 sfw_test_client_ops_t ping_test_client;
 196 void ping_init_test_client(void)
 197 {
 198         ping_test_client.tso_init     = ping_client_init;
 199         ping_test_client.tso_fini     = ping_client_fini;
 200         ping_test_client.tso_prep_rpc = ping_client_prep_rpc;
 201         ping_test_client.tso_done_rpc = ping_client_done_rpc;
 202 }
 203
 204 srpc_service_t ping_test_service;
 205 void ping_init_test_service(void)
 206 {
 207         ping_test_service.sv_id       = SRPC_SERVICE_PING;
 208         ping_test_service.sv_name     = "ping_test";
 209         ping_test_service.sv_handler  = ping_server_handle;
 210         ping_test_service.sv_wi_total = ping_srv_workitems;
 211 }