| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| * |
| * lnet/selftest/brw_test.c |
| * |
| * Author: Isaac Huang <isaac@clusterfs.com> |
| */ |
| |
| #include "selftest.h" |
| |
| static int brw_srv_workitems = SFW_TEST_WI_MAX; |
| module_param(brw_srv_workitems, int, 0644); |
| MODULE_PARM_DESC(brw_srv_workitems, "# BRW server workitems"); |
| |
| static int brw_inject_errors; |
| module_param(brw_inject_errors, int, 0644); |
| MODULE_PARM_DESC(brw_inject_errors, "# data errors to inject randomly, zero by default"); |
| |
| static void |
| brw_client_fini(sfw_test_instance_t *tsi) |
| { |
| srpc_bulk_t *bulk; |
| sfw_test_unit_t *tsu; |
| |
| LASSERT(tsi->tsi_is_client); |
| |
| list_for_each_entry(tsu, &tsi->tsi_units, tsu_list) { |
| bulk = tsu->tsu_private; |
| if (bulk == NULL) |
| continue; |
| |
| srpc_free_bulk(bulk); |
| tsu->tsu_private = NULL; |
| } |
| } |
| |
| static int |
| brw_client_init(sfw_test_instance_t *tsi) |
| { |
| sfw_session_t *sn = tsi->tsi_batch->bat_session; |
| int flags; |
| int npg; |
| int len; |
| int opc; |
| srpc_bulk_t *bulk; |
| sfw_test_unit_t *tsu; |
| |
| LASSERT(sn != NULL); |
| LASSERT(tsi->tsi_is_client); |
| |
| if ((sn->sn_features & LST_FEAT_BULK_LEN) == 0) { |
| test_bulk_req_t *breq = &tsi->tsi_u.bulk_v0; |
| |
| opc = breq->blk_opc; |
| flags = breq->blk_flags; |
| npg = breq->blk_npg; |
| /* NB: this is not going to work for variable page size, |
| * but we have to keep it for compatibility */ |
| len = npg * PAGE_CACHE_SIZE; |
| |
| } else { |
| test_bulk_req_v1_t *breq = &tsi->tsi_u.bulk_v1; |
| |
| /* I should never get this step if it's unknown feature |
| * because make_session will reject unknown feature */ |
| LASSERT((sn->sn_features & ~LST_FEATS_MASK) == 0); |
| |
| opc = breq->blk_opc; |
| flags = breq->blk_flags; |
| len = breq->blk_len; |
| npg = (len + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; |
| } |
| |
| if (npg > LNET_MAX_IOV || npg <= 0) |
| return -EINVAL; |
| |
| if (opc != LST_BRW_READ && opc != LST_BRW_WRITE) |
| return -EINVAL; |
| |
| if (flags != LST_BRW_CHECK_NONE && |
| flags != LST_BRW_CHECK_FULL && flags != LST_BRW_CHECK_SIMPLE) |
| return -EINVAL; |
| |
| list_for_each_entry(tsu, &tsi->tsi_units, tsu_list) { |
| bulk = srpc_alloc_bulk(lnet_cpt_of_nid(tsu->tsu_dest.nid), |
| npg, len, opc == LST_BRW_READ); |
| if (bulk == NULL) { |
| brw_client_fini(tsi); |
| return -ENOMEM; |
| } |
| |
| tsu->tsu_private = bulk; |
| } |
| |
| return 0; |
| } |
| |
| #define BRW_POISON 0xbeefbeefbeefbeefULL |
| #define BRW_MAGIC 0xeeb0eeb1eeb2eeb3ULL |
| #define BRW_MSIZE sizeof(__u64) |
| |
| static int |
| brw_inject_one_error(void) |
| { |
| struct timespec64 ts; |
| |
| if (brw_inject_errors <= 0) |
| return 0; |
| |
| ktime_get_ts64(&ts); |
| |
| if (((ts.tv_nsec / NSEC_PER_USEC) & 1) == 0) |
| return 0; |
| |
| return brw_inject_errors--; |
| } |
| |
| static void |
| brw_fill_page(struct page *pg, int pattern, __u64 magic) |
| { |
| char *addr = page_address(pg); |
| int i; |
| |
| LASSERT(addr != NULL); |
| |
| if (pattern == LST_BRW_CHECK_NONE) |
| return; |
| |
| if (magic == BRW_MAGIC) |
| magic += brw_inject_one_error(); |
| |
| if (pattern == LST_BRW_CHECK_SIMPLE) { |
| memcpy(addr, &magic, BRW_MSIZE); |
| addr += PAGE_CACHE_SIZE - BRW_MSIZE; |
| memcpy(addr, &magic, BRW_MSIZE); |
| return; |
| } |
| |
| if (pattern == LST_BRW_CHECK_FULL) { |
| for (i = 0; i < PAGE_CACHE_SIZE / BRW_MSIZE; i++) |
| memcpy(addr + i * BRW_MSIZE, &magic, BRW_MSIZE); |
| return; |
| } |
| |
| LBUG(); |
| } |
| |
| static int |
| brw_check_page(struct page *pg, int pattern, __u64 magic) |
| { |
| char *addr = page_address(pg); |
| __u64 data = 0; /* make compiler happy */ |
| int i; |
| |
| LASSERT(addr != NULL); |
| |
| if (pattern == LST_BRW_CHECK_NONE) |
| return 0; |
| |
| if (pattern == LST_BRW_CHECK_SIMPLE) { |
| data = *((__u64 *) addr); |
| if (data != magic) |
| goto bad_data; |
| |
| addr += PAGE_CACHE_SIZE - BRW_MSIZE; |
| data = *((__u64 *) addr); |
| if (data != magic) |
| goto bad_data; |
| |
| return 0; |
| } |
| |
| if (pattern == LST_BRW_CHECK_FULL) { |
| for (i = 0; i < PAGE_CACHE_SIZE / BRW_MSIZE; i++) { |
| data = *(((__u64 *) addr) + i); |
| if (data != magic) |
| goto bad_data; |
| } |
| |
| return 0; |
| } |
| |
| LBUG(); |
| |
| bad_data: |
| CERROR("Bad data in page %p: %#llx, %#llx expected\n", |
| pg, data, magic); |
| return 1; |
| } |
| |
| static void |
| brw_fill_bulk(srpc_bulk_t *bk, int pattern, __u64 magic) |
| { |
| int i; |
| struct page *pg; |
| |
| for (i = 0; i < bk->bk_niov; i++) { |
| pg = bk->bk_iovs[i].kiov_page; |
| brw_fill_page(pg, pattern, magic); |
| } |
| } |
| |
| static int |
| brw_check_bulk(srpc_bulk_t *bk, int pattern, __u64 magic) |
| { |
| int i; |
| struct page *pg; |
| |
| for (i = 0; i < bk->bk_niov; i++) { |
| pg = bk->bk_iovs[i].kiov_page; |
| if (brw_check_page(pg, pattern, magic) != 0) { |
| CERROR("Bulk page %p (%d/%d) is corrupted!\n", |
| pg, i, bk->bk_niov); |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int |
| brw_client_prep_rpc(sfw_test_unit_t *tsu, |
| lnet_process_id_t dest, srpc_client_rpc_t **rpcpp) |
| { |
| srpc_bulk_t *bulk = tsu->tsu_private; |
| sfw_test_instance_t *tsi = tsu->tsu_instance; |
| sfw_session_t *sn = tsi->tsi_batch->bat_session; |
| srpc_client_rpc_t *rpc; |
| srpc_brw_reqst_t *req; |
| int flags; |
| int npg; |
| int len; |
| int opc; |
| int rc; |
| |
| LASSERT(sn != NULL); |
| LASSERT(bulk != NULL); |
| |
| if ((sn->sn_features & LST_FEAT_BULK_LEN) == 0) { |
| test_bulk_req_t *breq = &tsi->tsi_u.bulk_v0; |
| |
| opc = breq->blk_opc; |
| flags = breq->blk_flags; |
| npg = breq->blk_npg; |
| len = npg * PAGE_CACHE_SIZE; |
| |
| } else { |
| test_bulk_req_v1_t *breq = &tsi->tsi_u.bulk_v1; |
| |
| /* I should never get this step if it's unknown feature |
| * because make_session will reject unknown feature */ |
| LASSERT((sn->sn_features & ~LST_FEATS_MASK) == 0); |
| |
| opc = breq->blk_opc; |
| flags = breq->blk_flags; |
| len = breq->blk_len; |
| npg = (len + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; |
| } |
| |
| rc = sfw_create_test_rpc(tsu, dest, sn->sn_features, npg, len, &rpc); |
| if (rc != 0) |
| return rc; |
| |
| memcpy(&rpc->crpc_bulk, bulk, offsetof(srpc_bulk_t, bk_iovs[npg])); |
| if (opc == LST_BRW_WRITE) |
| brw_fill_bulk(&rpc->crpc_bulk, flags, BRW_MAGIC); |
| else |
| brw_fill_bulk(&rpc->crpc_bulk, flags, BRW_POISON); |
| |
| req = &rpc->crpc_reqstmsg.msg_body.brw_reqst; |
| req->brw_flags = flags; |
| req->brw_rw = opc; |
| req->brw_len = len; |
| |
| *rpcpp = rpc; |
| return 0; |
| } |
| |
| static void |
| brw_client_done_rpc(sfw_test_unit_t *tsu, srpc_client_rpc_t *rpc) |
| { |
| __u64 magic = BRW_MAGIC; |
| sfw_test_instance_t *tsi = tsu->tsu_instance; |
| sfw_session_t *sn = tsi->tsi_batch->bat_session; |
| srpc_msg_t *msg = &rpc->crpc_replymsg; |
| srpc_brw_reply_t *reply = &msg->msg_body.brw_reply; |
| srpc_brw_reqst_t *reqst = &rpc->crpc_reqstmsg.msg_body.brw_reqst; |
| |
| LASSERT(sn != NULL); |
| |
| if (rpc->crpc_status != 0) { |
| CERROR("BRW RPC to %s failed with %d\n", |
| libcfs_id2str(rpc->crpc_dest), rpc->crpc_status); |
| if (!tsi->tsi_stopping) /* rpc could have been aborted */ |
| atomic_inc(&sn->sn_brw_errors); |
| goto out; |
| } |
| |
| if (msg->msg_magic != SRPC_MSG_MAGIC) { |
| __swab64s(&magic); |
| __swab32s(&reply->brw_status); |
| } |
| |
| CDEBUG(reply->brw_status ? D_WARNING : D_NET, |
| "BRW RPC to %s finished with brw_status: %d\n", |
| libcfs_id2str(rpc->crpc_dest), reply->brw_status); |
| |
| if (reply->brw_status != 0) { |
| atomic_inc(&sn->sn_brw_errors); |
| rpc->crpc_status = -(int)reply->brw_status; |
| goto out; |
| } |
| |
| if (reqst->brw_rw == LST_BRW_WRITE) |
| goto out; |
| |
| if (brw_check_bulk(&rpc->crpc_bulk, reqst->brw_flags, magic) != 0) { |
| CERROR("Bulk data from %s is corrupted!\n", |
| libcfs_id2str(rpc->crpc_dest)); |
| atomic_inc(&sn->sn_brw_errors); |
| rpc->crpc_status = -EBADMSG; |
| } |
| |
| out: |
| return; |
| } |
| |
| static void |
| brw_server_rpc_done(srpc_server_rpc_t *rpc) |
| { |
| srpc_bulk_t *blk = rpc->srpc_bulk; |
| |
| if (blk == NULL) |
| return; |
| |
| if (rpc->srpc_status != 0) |
| CERROR("Bulk transfer %s %s has failed: %d\n", |
| blk->bk_sink ? "from" : "to", |
| libcfs_id2str(rpc->srpc_peer), rpc->srpc_status); |
| else |
| CDEBUG(D_NET, "Transferred %d pages bulk data %s %s\n", |
| blk->bk_niov, blk->bk_sink ? "from" : "to", |
| libcfs_id2str(rpc->srpc_peer)); |
| |
| sfw_free_pages(rpc); |
| } |
| |
| static int |
| brw_bulk_ready(srpc_server_rpc_t *rpc, int status) |
| { |
| __u64 magic = BRW_MAGIC; |
| srpc_brw_reply_t *reply = &rpc->srpc_replymsg.msg_body.brw_reply; |
| srpc_brw_reqst_t *reqst; |
| srpc_msg_t *reqstmsg; |
| |
| LASSERT(rpc->srpc_bulk != NULL); |
| LASSERT(rpc->srpc_reqstbuf != NULL); |
| |
| reqstmsg = &rpc->srpc_reqstbuf->buf_msg; |
| reqst = &reqstmsg->msg_body.brw_reqst; |
| |
| if (status != 0) { |
| CERROR("BRW bulk %s failed for RPC from %s: %d\n", |
| reqst->brw_rw == LST_BRW_READ ? "READ" : "WRITE", |
| libcfs_id2str(rpc->srpc_peer), status); |
| return -EIO; |
| } |
| |
| if (reqst->brw_rw == LST_BRW_READ) |
| return 0; |
| |
| if (reqstmsg->msg_magic != SRPC_MSG_MAGIC) |
| __swab64s(&magic); |
| |
| if (brw_check_bulk(rpc->srpc_bulk, reqst->brw_flags, magic) != 0) { |
| CERROR("Bulk data from %s is corrupted!\n", |
| libcfs_id2str(rpc->srpc_peer)); |
| reply->brw_status = EBADMSG; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| brw_server_handle(struct srpc_server_rpc *rpc) |
| { |
| struct srpc_service *sv = rpc->srpc_scd->scd_svc; |
| srpc_msg_t *replymsg = &rpc->srpc_replymsg; |
| srpc_msg_t *reqstmsg = &rpc->srpc_reqstbuf->buf_msg; |
| srpc_brw_reply_t *reply = &replymsg->msg_body.brw_reply; |
| srpc_brw_reqst_t *reqst = &reqstmsg->msg_body.brw_reqst; |
| int npg; |
| int rc; |
| |
| LASSERT(sv->sv_id == SRPC_SERVICE_BRW); |
| |
| if (reqstmsg->msg_magic != SRPC_MSG_MAGIC) { |
| LASSERT(reqstmsg->msg_magic == __swab32(SRPC_MSG_MAGIC)); |
| |
| __swab32s(&reqst->brw_rw); |
| __swab32s(&reqst->brw_len); |
| __swab32s(&reqst->brw_flags); |
| __swab64s(&reqst->brw_rpyid); |
| __swab64s(&reqst->brw_bulkid); |
| } |
| LASSERT(reqstmsg->msg_type == (__u32)srpc_service2request(sv->sv_id)); |
| |
| reply->brw_status = 0; |
| rpc->srpc_done = brw_server_rpc_done; |
| |
| if ((reqst->brw_rw != LST_BRW_READ && reqst->brw_rw != LST_BRW_WRITE) || |
| (reqst->brw_flags != LST_BRW_CHECK_NONE && |
| reqst->brw_flags != LST_BRW_CHECK_FULL && |
| reqst->brw_flags != LST_BRW_CHECK_SIMPLE)) { |
| reply->brw_status = EINVAL; |
| return 0; |
| } |
| |
| if ((reqstmsg->msg_ses_feats & ~LST_FEATS_MASK) != 0) { |
| replymsg->msg_ses_feats = LST_FEATS_MASK; |
| reply->brw_status = EPROTO; |
| return 0; |
| } |
| |
| if ((reqstmsg->msg_ses_feats & LST_FEAT_BULK_LEN) == 0) { |
| /* compat with old version */ |
| if ((reqst->brw_len & ~CFS_PAGE_MASK) != 0) { |
| reply->brw_status = EINVAL; |
| return 0; |
| } |
| npg = reqst->brw_len >> PAGE_CACHE_SHIFT; |
| |
| } else { |
| npg = (reqst->brw_len + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; |
| } |
| |
| replymsg->msg_ses_feats = reqstmsg->msg_ses_feats; |
| |
| if (reqst->brw_len == 0 || npg > LNET_MAX_IOV) { |
| reply->brw_status = EINVAL; |
| return 0; |
| } |
| |
| rc = sfw_alloc_pages(rpc, rpc->srpc_scd->scd_cpt, npg, |
| reqst->brw_len, |
| reqst->brw_rw == LST_BRW_WRITE); |
| if (rc != 0) |
| return rc; |
| |
| if (reqst->brw_rw == LST_BRW_READ) |
| brw_fill_bulk(rpc->srpc_bulk, reqst->brw_flags, BRW_MAGIC); |
| else |
| brw_fill_bulk(rpc->srpc_bulk, reqst->brw_flags, BRW_POISON); |
| |
| return 0; |
| } |
| |
| sfw_test_client_ops_t brw_test_client; |
| void brw_init_test_client(void) |
| { |
| brw_test_client.tso_init = brw_client_init; |
| brw_test_client.tso_fini = brw_client_fini; |
| brw_test_client.tso_prep_rpc = brw_client_prep_rpc; |
| brw_test_client.tso_done_rpc = brw_client_done_rpc; |
| }; |
| |
| srpc_service_t brw_test_service; |
| void brw_init_test_service(void) |
| { |
| |
| brw_test_service.sv_id = SRPC_SERVICE_BRW; |
| brw_test_service.sv_name = "brw_test"; |
| brw_test_service.sv_handler = brw_server_handle; |
| brw_test_service.sv_bulk_ready = brw_bulk_ready; |
| brw_test_service.sv_wi_total = brw_srv_workitems; |
| } |