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         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         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  59
  60         LASSERT(tsi->tsi_is_client);
  61         LASSERT(sn != NULL && (sn->sn_features & ~LST_FEATS_MASK) == 0);
  62
  63         spin_lock_init(&lst_ping_data.pnd_lock);
  64         lst_ping_data.pnd_counter = 0;
  65
  66         return 0;
  67 }
  68
  69 static void
  70 ping_client_fini (sfw_test_instance_t *tsi)
  71 {
  72         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  73         int            errors;
  74
  75         LASSERT (sn != NULL);
  76         LASSERT (tsi->tsi_is_client);
  77
  78         errors = cfs_atomic_read(&sn->sn_ping_errors);
  79         if (errors)
  80                 CWARN ("%d pings have failed.\n", errors);
  81         else
  82                 CDEBUG (D_NET, "Ping test finished OK.\n");
  83 }
  84
  85 static int
  86 ping_client_prep_rpc(sfw_test_unit_t *tsu,
  87                      lnet_process_id_t dest, srpc_client_rpc_t **rpc)
  88 {
  89         srpc_ping_reqst_t   *req;
  90         sfw_test_instance_t *tsi = tsu->tsu_instance;
  91         sfw_session_t       *sn  = tsi->tsi_batch->bat_session;
  92         struct timeval       tv;
  93         int                  rc;
  94
  95         LASSERT(sn != NULL);
  96         LASSERT((sn->sn_features & ~LST_FEATS_MASK) == 0);
  97
  98         rc = sfw_create_test_rpc(tsu, dest, sn->sn_features, 0, 0, rpc);
  99         if (rc != 0)
 100                 return rc;
 101
 102         req = &(*rpc)->crpc_reqstmsg.msg_body.ping_reqst;
 103
 104         req->pnr_magic = LST_PING_TEST_MAGIC;
 105
 106         spin_lock(&lst_ping_data.pnd_lock);
 107         req->pnr_seq = lst_ping_data.pnd_counter++;
 108         spin_unlock(&lst_ping_data.pnd_lock);
 109
 110         cfs_fs_timeval(&tv);
 111         req->pnr_time_sec  = tv.tv_sec;
 112         req->pnr_time_usec = tv.tv_usec;
 113
 114         return rc;
 115 }
 116
 117 static void
 118 ping_client_done_rpc (sfw_test_unit_t *tsu, srpc_client_rpc_t *rpc)
 119 {
 120         sfw_test_instance_t *tsi = tsu->tsu_instance;
 121         sfw_session_t       *sn = tsi->tsi_batch->bat_session;
 122         srpc_ping_reqst_t   *reqst = &rpc->crpc_reqstmsg.msg_body.ping_reqst;
 123         srpc_ping_reply_t   *reply = &rpc->crpc_replymsg.msg_body.ping_reply;
 124         struct timeval       tv;
 125
 126         LASSERT (sn != NULL);
 127
 128         if (rpc->crpc_status != 0) {
 129                 if (!tsi->tsi_stopping) /* rpc could have been aborted */
 130                         cfs_atomic_inc(&sn->sn_ping_errors);
 131                 CERROR ("Unable to ping %s (%d): %d\n",
 132                         libcfs_id2str(rpc->crpc_dest),
 133                         reqst->pnr_seq, rpc->crpc_status);
 134                 return;
 135         }
 136
 137         if (rpc->crpc_replymsg.msg_magic != SRPC_MSG_MAGIC) {
 138                 __swab32s(&reply->pnr_seq);
 139                 __swab32s(&reply->pnr_magic);
 140                 __swab32s(&reply->pnr_status);
 141         }
 142
 143         if (reply->pnr_magic != LST_PING_TEST_MAGIC) {
 144                 rpc->crpc_status = -EBADMSG;
 145                 cfs_atomic_inc(&sn->sn_ping_errors);
 146                 CERROR ("Bad magic %u from %s, %u expected.\n",
 147                         reply->pnr_magic, libcfs_id2str(rpc->crpc_dest),
 148                         LST_PING_TEST_MAGIC);
 149                 return;
 150         }
 151
 152         if (reply->pnr_seq != reqst->pnr_seq) {
 153                 rpc->crpc_status = -EBADMSG;
 154                 cfs_atomic_inc(&sn->sn_ping_errors);
 155                 CERROR ("Bad seq %u from %s, %u expected.\n",
 156                         reply->pnr_seq, libcfs_id2str(rpc->crpc_dest),
 157                         reqst->pnr_seq);
 158                 return;
 159         }
 160
 161         cfs_fs_timeval(&tv);
 162         CDEBUG (D_NET, "%d reply in %u usec\n", reply->pnr_seq,
 163                 (unsigned)((tv.tv_sec - (unsigned)reqst->pnr_time_sec) * 1000000
 164                            + (tv.tv_usec - reqst->pnr_time_usec)));
 165         return;
 166 }
 167
 168 static int
 169 ping_server_handle(struct srpc_server_rpc *rpc)
 170 {
 171         struct srpc_service     *sv  = rpc->srpc_scd->scd_svc;
 172         srpc_msg_t        *reqstmsg = &rpc->srpc_reqstbuf->buf_msg;
 173         srpc_msg_t        *replymsg = &rpc->srpc_replymsg;
 174         srpc_ping_reqst_t *req = &reqstmsg->msg_body.ping_reqst;
 175         srpc_ping_reply_t *rep = &rpc->srpc_replymsg.msg_body.ping_reply;
 176
 177         LASSERT (sv->sv_id == SRPC_SERVICE_PING);
 178
 179         if (reqstmsg->msg_magic != SRPC_MSG_MAGIC) {
 180                 LASSERT (reqstmsg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 181
 182                 __swab32s(&req->pnr_seq);
 183                 __swab32s(&req->pnr_magic);
 184                 __swab64s(&req->pnr_time_sec);
 185                 __swab64s(&req->pnr_time_usec);
 186         }
 187         LASSERT (reqstmsg->msg_type == srpc_service2request(sv->sv_id));
 188
 189         if (req->pnr_magic != LST_PING_TEST_MAGIC) {
 190                 CERROR ("Unexpect magic %08x from %s\n",
 191                         req->pnr_magic, libcfs_id2str(rpc->srpc_peer));
 192                 return -EINVAL;
 193         }
 194
 195         rep->pnr_seq   = req->pnr_seq;
 196         rep->pnr_magic = LST_PING_TEST_MAGIC;
 197
 198         if ((reqstmsg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 199                 replymsg->msg_ses_feats = LST_FEATS_MASK;
 200                 rep->pnr_status = EPROTO;
 201                 return 0;
 202         }
 203
 204         replymsg->msg_ses_feats = reqstmsg->msg_ses_feats;
 205
 206         CDEBUG(D_NET, "Get ping %d from %s\n",
 207                req->pnr_seq, libcfs_id2str(rpc->srpc_peer));
 208         return 0;
 209 }
 210
 211 sfw_test_client_ops_t ping_test_client;
 212 void ping_init_test_client(void)
 213 {
 214         ping_test_client.tso_init     = ping_client_init;
 215         ping_test_client.tso_fini     = ping_client_fini;
 216         ping_test_client.tso_prep_rpc = ping_client_prep_rpc;
 217         ping_test_client.tso_done_rpc = ping_client_done_rpc;
 218 }
 219
 220 srpc_service_t ping_test_service;
 221 void ping_init_test_service(void)
 222 {
 223         ping_test_service.sv_id       = SRPC_SERVICE_PING;
 224         ping_test_service.sv_name     = "ping_test";
 225         ping_test_service.sv_handler  = ping_server_handle;
 226         ping_test_service.sv_wi_total = ping_srv_workitems;
 227 }