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 int ping_srv_workitems = SFW_TEST_WI_MAX;
  48 CFS_MODULE_PARM(ping_srv_workitems, "i", int, 0644, "# PING server workitems");
  49
  50 typedef struct {
  51         spinlock_t      pnd_lock;       /* serialize */
  52         int             pnd_counter;    /* sequence counter */
  53 } lst_ping_data_t;
  54
  55 static lst_ping_data_t  lst_ping_data;
  56
  57 static int
  58 ping_client_init(sfw_test_instance_t *tsi)
  59 {
  60         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  61
  62         LASSERT(tsi->tsi_is_client);
  63         LASSERT(sn != NULL && (sn->sn_features & ~LST_FEATS_MASK) == 0);
  64
  65         spin_lock_init(&lst_ping_data.pnd_lock);
  66         lst_ping_data.pnd_counter = 0;
  67
  68         return 0;
  69 }
  70
  71 static void
  72 ping_client_fini (sfw_test_instance_t *tsi)
  73 {
  74         sfw_session_t *sn = tsi->tsi_batch->bat_session;
  75         int            errors;
  76
  77         LASSERT (sn != NULL);
  78         LASSERT (tsi->tsi_is_client);
  79
  80         errors = cfs_atomic_read(&sn->sn_ping_errors);
  81         if (errors)
  82                 CWARN ("%d pings have failed.\n", errors);
  83         else
  84                 CDEBUG (D_NET, "Ping test finished OK.\n");
  85 }
  86
  87 static int
  88 ping_client_prep_rpc(sfw_test_unit_t *tsu,
  89                      lnet_process_id_t dest, srpc_client_rpc_t **rpc)
  90 {
  91         srpc_ping_reqst_t   *req;
  92         sfw_test_instance_t *tsi = tsu->tsu_instance;
  93         sfw_session_t       *sn  = tsi->tsi_batch->bat_session;
  94         struct timeval       tv;
  95         int                  rc;
  96
  97         LASSERT(sn != NULL);
  98         LASSERT((sn->sn_features & ~LST_FEATS_MASK) == 0);
  99
 100         rc = sfw_create_test_rpc(tsu, dest, sn->sn_features, 0, 0, rpc);
 101         if (rc != 0)
 102                 return rc;
 103
 104         req = &(*rpc)->crpc_reqstmsg.msg_body.ping_reqst;
 105
 106         req->pnr_magic = LST_PING_TEST_MAGIC;
 107
 108         spin_lock(&lst_ping_data.pnd_lock);
 109         req->pnr_seq = lst_ping_data.pnd_counter++;
 110         spin_unlock(&lst_ping_data.pnd_lock);
 111
 112         cfs_fs_timeval(&tv);
 113         req->pnr_time_sec  = tv.tv_sec;
 114         req->pnr_time_usec = tv.tv_usec;
 115
 116         return rc;
 117 }
 118
 119 static void
 120 ping_client_done_rpc (sfw_test_unit_t *tsu, srpc_client_rpc_t *rpc)
 121 {
 122         sfw_test_instance_t *tsi = tsu->tsu_instance;
 123         sfw_session_t       *sn = tsi->tsi_batch->bat_session;
 124         srpc_ping_reqst_t   *reqst = &rpc->crpc_reqstmsg.msg_body.ping_reqst;
 125         srpc_ping_reply_t   *reply = &rpc->crpc_replymsg.msg_body.ping_reply;
 126         struct timeval       tv;
 127
 128         LASSERT (sn != NULL);
 129
 130         if (rpc->crpc_status != 0) {
 131                 if (!tsi->tsi_stopping) /* rpc could have been aborted */
 132                         cfs_atomic_inc(&sn->sn_ping_errors);
 133                 CERROR ("Unable to ping %s (%d): %d\n",
 134                         libcfs_id2str(rpc->crpc_dest),
 135                         reqst->pnr_seq, rpc->crpc_status);
 136                 return;
 137         }
 138
 139         if (rpc->crpc_replymsg.msg_magic != SRPC_MSG_MAGIC) {
 140                 __swab32s(&reply->pnr_seq);
 141                 __swab32s(&reply->pnr_magic);
 142                 __swab32s(&reply->pnr_status);
 143         }
 144
 145         if (reply->pnr_magic != LST_PING_TEST_MAGIC) {
 146                 rpc->crpc_status = -EBADMSG;
 147                 cfs_atomic_inc(&sn->sn_ping_errors);
 148                 CERROR ("Bad magic %u from %s, %u expected.\n",
 149                         reply->pnr_magic, libcfs_id2str(rpc->crpc_dest),
 150                         LST_PING_TEST_MAGIC);
 151                 return;
 152         }
 153
 154         if (reply->pnr_seq != reqst->pnr_seq) {
 155                 rpc->crpc_status = -EBADMSG;
 156                 cfs_atomic_inc(&sn->sn_ping_errors);
 157                 CERROR ("Bad seq %u from %s, %u expected.\n",
 158                         reply->pnr_seq, libcfs_id2str(rpc->crpc_dest),
 159                         reqst->pnr_seq);
 160                 return;
 161         }
 162
 163         cfs_fs_timeval(&tv);
 164         CDEBUG (D_NET, "%d reply in %u usec\n", reply->pnr_seq,
 165                 (unsigned)((tv.tv_sec - (unsigned)reqst->pnr_time_sec) * 1000000
 166                            + (tv.tv_usec - reqst->pnr_time_usec)));
 167         return;
 168 }
 169
 170 static int
 171 ping_server_handle(struct srpc_server_rpc *rpc)
 172 {
 173         struct srpc_service     *sv  = rpc->srpc_scd->scd_svc;
 174         srpc_msg_t        *reqstmsg = &rpc->srpc_reqstbuf->buf_msg;
 175         srpc_msg_t        *replymsg = &rpc->srpc_replymsg;
 176         srpc_ping_reqst_t *req = &reqstmsg->msg_body.ping_reqst;
 177         srpc_ping_reply_t *rep = &rpc->srpc_replymsg.msg_body.ping_reply;
 178
 179         LASSERT (sv->sv_id == SRPC_SERVICE_PING);
 180
 181         if (reqstmsg->msg_magic != SRPC_MSG_MAGIC) {
 182                 LASSERT (reqstmsg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 183
 184                 __swab32s(&req->pnr_seq);
 185                 __swab32s(&req->pnr_magic);
 186                 __swab64s(&req->pnr_time_sec);
 187                 __swab64s(&req->pnr_time_usec);
 188         }
 189         LASSERT (reqstmsg->msg_type == srpc_service2request(sv->sv_id));
 190
 191         if (req->pnr_magic != LST_PING_TEST_MAGIC) {
 192                 CERROR ("Unexpect magic %08x from %s\n",
 193                         req->pnr_magic, libcfs_id2str(rpc->srpc_peer));
 194                 return -EINVAL;
 195         }
 196
 197         rep->pnr_seq   = req->pnr_seq;
 198         rep->pnr_magic = LST_PING_TEST_MAGIC;
 199
 200         if ((reqstmsg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
 201                 replymsg->msg_ses_feats = LST_FEATS_MASK;
 202                 rep->pnr_status = EPROTO;
 203                 return 0;
 204         }
 205
 206         replymsg->msg_ses_feats = reqstmsg->msg_ses_feats;
 207
 208         CDEBUG(D_NET, "Get ping %d from %s\n",
 209                req->pnr_seq, libcfs_id2str(rpc->srpc_peer));
 210         return 0;
 211 }
 212
 213 sfw_test_client_ops_t ping_test_client;
 214 void ping_init_test_client(void)
 215 {
 216         ping_test_client.tso_init     = ping_client_init;
 217         ping_test_client.tso_fini     = ping_client_fini;
 218         ping_test_client.tso_prep_rpc = ping_client_prep_rpc;
 219         ping_test_client.tso_done_rpc = ping_client_done_rpc;
 220 }
 221
 222 srpc_service_t ping_test_service;
 223 void ping_init_test_service(void)
 224 {
 225         ping_test_service.sv_id       = SRPC_SERVICE_PING;
 226         ping_test_service.sv_name     = "ping_test";
 227         ping_test_service.sv_handler  = ping_server_handle;
 228         ping_test_service.sv_wi_total = ping_srv_workitems;
 229 }