1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/ptlrpc/layout.c
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Nikita Danilov <nikita@clusterfs.com>
43 #if !defined(__REQ_LAYOUT_USER__)
46 # define EXPORT_SYMTAB
48 #define DEBUG_SUBSYSTEM S_RPC
51 #include <linux/module.h>
53 # include <liblustre.h>
56 /* LUSTRE_VERSION_CODE */
57 #include <lustre_ver.h>
59 #include <obd_support.h>
60 /* lustre_swab_mdt_body */
61 #include <lustre/lustre_idl.h>
62 /* obd2cli_tgt() (required by DEBUG_REQ()) */
65 /* __REQ_LAYOUT_USER__ */
67 /* struct ptlrpc_request, lustre_msg* */
68 #include <lustre_req_layout.h>
69 #include <lustre_acl.h>
72 * empty set of fields... for suitable definition of emptiness.
74 static const struct req_msg_field *empty[] = {
78 static const struct req_msg_field *mgs_target_info_only[] = {
83 static const struct req_msg_field *mgs_set_info[] = {
88 static const struct req_msg_field *log_cancel_client[] = {
93 static const struct req_msg_field *mdt_body_only[] = {
98 static const struct req_msg_field *mdt_body_capa[] = {
104 static const struct req_msg_field *quotactl_only[] = {
109 static const struct req_msg_field *qunit_data_only[] = {
114 static const struct req_msg_field *mdt_close_client[] = {
121 static const struct req_msg_field *obd_statfs_server[] = {
126 static const struct req_msg_field *seq_query_client[] = {
132 static const struct req_msg_field *seq_query_server[] = {
137 static const struct req_msg_field *fld_query_client[] = {
143 static const struct req_msg_field *fld_query_server[] = {
148 static const struct req_msg_field *mds_getattr_name_client[] = {
155 static const struct req_msg_field *mds_reint_client[] = {
160 static const struct req_msg_field *mds_reint_create_client[] = {
167 static const struct req_msg_field *mds_reint_create_slave_client[] = {
176 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
185 static const struct req_msg_field *mds_reint_create_sym_client[] = {
194 static const struct req_msg_field *mds_reint_open_client[] = {
203 static const struct req_msg_field *mds_reint_open_server[] = {
212 static const struct req_msg_field *mds_reint_unlink_client[] = {
220 static const struct req_msg_field *mds_reint_link_client[] = {
229 static const struct req_msg_field *mds_reint_rename_client[] = {
239 static const struct req_msg_field *mds_last_unlink_server[] = {
246 static const struct req_msg_field *mds_reint_setattr_client[] = {
256 static const struct req_msg_field *mds_reint_setxattr_client[] = {
264 static const struct req_msg_field *obd_connect_client[] = {
272 static const struct req_msg_field *obd_connect_server[] = {
277 static const struct req_msg_field *mds_set_info_client[] = {
283 static const struct req_msg_field *ldlm_enqueue_client[] = {
288 static const struct req_msg_field *ldlm_enqueue_server[] = {
293 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
299 static const struct req_msg_field *ldlm_cp_callback_client[] = {
305 static const struct req_msg_field *ldlm_gl_callback_server[] = {
310 static const struct req_msg_field *ldlm_intent_client[] = {
317 static const struct req_msg_field *ldlm_intent_server[] = {
325 static const struct req_msg_field *ldlm_intent_open_server[] = {
335 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
339 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
344 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
353 static const struct req_msg_field *ldlm_intent_create_client[] = {
357 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
363 static const struct req_msg_field *ldlm_intent_open_client[] = {
367 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
375 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
379 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
384 static const struct req_msg_field *mds_getxattr_client[] = {
392 static const struct req_msg_field *mds_getxattr_server[] = {
398 static const struct req_msg_field *mds_getattr_server[] = {
407 static const struct req_msg_field *mds_setattr_server[] = {
416 static const struct req_msg_field *llog_catinfo_client[] = {
422 static const struct req_msg_field *llog_catinfo_server[] = {
427 static const struct req_msg_field *llog_origin_handle_create_client[] = {
433 static const struct req_msg_field *llogd_body_only[] = {
438 static const struct req_msg_field *llog_log_hdr_only[] = {
443 static const struct req_msg_field *llogd_conn_body_only[] = {
448 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
454 static const struct req_msg_field *ost_body_only[] = {
459 static const struct req_msg_field *ost_body_capa[] = {
465 static const struct req_msg_field *ost_destroy_client[] = {
472 static const struct req_msg_field *ost_brw_client[] = {
480 static const struct req_msg_field *ost_brw_server[] = {
486 static const struct req_msg_field *ost_set_info_client[] = {
492 static const struct req_msg_field *ost_get_info_generic_server[] = {
497 static const struct req_msg_field *ost_get_info_generic_client[] = {
502 static const struct req_msg_field *ost_get_last_id_server[] = {
507 static const struct req_msg_field *ost_get_fiemap_client[] = {
513 static const struct req_msg_field *ost_get_fiemap_server[] = {
518 static const struct req_format *req_formats[] = {
531 &RQF_MDS_GETATTR_NAME,
540 &RQF_MDS_DONE_WRITING,
542 &RQF_MDS_REINT_CREATE,
543 &RQF_MDS_REINT_CREATE_RMT_ACL,
544 &RQF_MDS_REINT_CREATE_SLAVE,
545 &RQF_MDS_REINT_CREATE_SYM,
547 &RQF_MDS_REINT_UNLINK,
549 &RQF_MDS_REINT_RENAME,
550 &RQF_MDS_REINT_SETATTR,
551 &RQF_MDS_REINT_SETXATTR,
554 &RQF_MDS_QUOTA_DQACQ,
568 &RQF_OST_GET_INFO_GENERIC,
569 &RQF_OST_GET_INFO_LAST_ID,
570 &RQF_OST_GET_INFO_FIEMAP,
572 &RQF_LDLM_ENQUEUE_LVB,
576 &RQF_LDLM_CP_CALLBACK,
577 &RQF_LDLM_BL_CALLBACK,
578 &RQF_LDLM_GL_CALLBACK,
580 &RQF_LDLM_INTENT_GETATTR,
581 &RQF_LDLM_INTENT_OPEN,
582 &RQF_LDLM_INTENT_CREATE,
583 &RQF_LDLM_INTENT_UNLINK,
586 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
587 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
588 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
589 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
590 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
591 &RQF_LLOG_ORIGIN_CONNECT
594 struct req_msg_field {
596 const char *rmf_name;
598 * Field length. (-1) means "variable length".
601 void (*rmf_swabber)(void *);
602 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
606 RMF_F_STRING = 1 << 0
614 #define DEFINE_MSGF(name, flags, size, swabber) { \
615 .rmf_name = (name), \
616 .rmf_flags = (flags), \
617 .rmf_size = (size), \
618 .rmf_swabber = (void (*)(void*))(swabber) \
621 const struct req_msg_field RMF_GENERIC_DATA =
622 DEFINE_MSGF("generic_data", 0,
624 EXPORT_SYMBOL(RMF_GENERIC_DATA);
626 const struct req_msg_field RMF_MGS_TARGET_INFO =
627 DEFINE_MSGF("mgs_target_info", 0,
628 sizeof(struct mgs_target_info),
629 lustre_swab_mgs_target_info);
630 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
632 const struct req_msg_field RMF_MGS_SEND_PARAM =
633 DEFINE_MSGF("mgs_send_param", 0,
634 sizeof(struct mgs_send_param),
636 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
638 const struct req_msg_field RMF_SETINFO_VAL =
639 DEFINE_MSGF("setinfo_val", 0,
640 sizeof(__u32), lustre_swab_generic_32s);
641 EXPORT_SYMBOL(RMF_SETINFO_VAL);
643 const struct req_msg_field RMF_SEQ_OPC =
644 DEFINE_MSGF("seq_query_opc", 0,
645 sizeof(__u32), lustre_swab_generic_32s);
646 EXPORT_SYMBOL(RMF_SEQ_OPC);
648 const struct req_msg_field RMF_SEQ_RANGE =
649 DEFINE_MSGF("seq_query_range", 0,
650 sizeof(struct lu_range), lustre_swab_lu_range);
651 EXPORT_SYMBOL(RMF_SEQ_RANGE);
653 const struct req_msg_field RMF_FLD_OPC =
654 DEFINE_MSGF("fld_query_opc", 0,
655 sizeof(__u32), lustre_swab_generic_32s);
656 EXPORT_SYMBOL(RMF_FLD_OPC);
658 const struct req_msg_field RMF_FLD_MDFLD =
659 DEFINE_MSGF("fld_query_mdfld", 0,
660 sizeof(struct md_fld), lustre_swab_md_fld);
661 EXPORT_SYMBOL(RMF_FLD_MDFLD);
663 const struct req_msg_field RMF_MDT_BODY =
664 DEFINE_MSGF("mdt_body", 0,
665 sizeof(struct mdt_body), lustre_swab_mdt_body);
666 EXPORT_SYMBOL(RMF_MDT_BODY);
668 const struct req_msg_field RMF_OBD_QUOTACTL =
669 DEFINE_MSGF("obd_quotactl", 0,
670 sizeof(struct obd_quotactl), lustre_swab_obd_quotactl);
671 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
673 const struct req_msg_field RMF_QUNIT_DATA =
674 DEFINE_MSGF("qunit_data", 0,
675 sizeof(struct qunit_data), NULL);
676 EXPORT_SYMBOL(RMF_QUNIT_DATA);
678 const struct req_msg_field RMF_MDT_EPOCH =
679 DEFINE_MSGF("mdt_epoch", 0,
680 sizeof(struct mdt_epoch), lustre_swab_mdt_epoch);
681 EXPORT_SYMBOL(RMF_MDT_EPOCH);
683 const struct req_msg_field RMF_PTLRPC_BODY =
684 DEFINE_MSGF("ptlrpc_body", 0,
685 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body);
686 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
688 const struct req_msg_field RMF_OBD_STATFS =
689 DEFINE_MSGF("obd_statfs", 0,
690 sizeof(struct obd_statfs), lustre_swab_obd_statfs);
691 EXPORT_SYMBOL(RMF_OBD_STATFS);
693 const struct req_msg_field RMF_SETINFO_KEY =
694 DEFINE_MSGF("setinfo_key", 0, -1, NULL);
695 EXPORT_SYMBOL(RMF_SETINFO_KEY);
697 const struct req_msg_field RMF_NAME =
698 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL);
699 EXPORT_SYMBOL(RMF_NAME);
701 const struct req_msg_field RMF_SYMTGT =
702 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL);
703 EXPORT_SYMBOL(RMF_SYMTGT);
705 const struct req_msg_field RMF_TGTUUID =
706 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
707 EXPORT_SYMBOL(RMF_TGTUUID);
709 const struct req_msg_field RMF_CLUUID =
710 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
711 EXPORT_SYMBOL(RMF_CLUUID);
713 const struct req_msg_field RMF_STRING =
714 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL);
715 EXPORT_SYMBOL(RMF_STRING);
717 const struct req_msg_field RMF_LLOGD_BODY =
718 DEFINE_MSGF("llogd_body", 0,
719 sizeof(struct llogd_body), lustre_swab_llogd_body);
720 EXPORT_SYMBOL(RMF_LLOGD_BODY);
722 const struct req_msg_field RMF_LLOG_LOG_HDR =
723 DEFINE_MSGF("llog_log_hdr", 0,
724 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr);
725 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
727 const struct req_msg_field RMF_LLOGD_CONN_BODY =
728 DEFINE_MSGF("llogd_conn_body", 0,
729 sizeof(struct llogd_conn_body),
730 lustre_swab_llogd_conn_body);
731 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
734 * connection handle received in MDS_CONNECT request.
738 const struct req_msg_field RMF_CONN =
739 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL);
740 EXPORT_SYMBOL(RMF_CONN);
742 const struct req_msg_field RMF_CONNECT_DATA =
743 DEFINE_MSGF("cdata", 0,
744 sizeof(struct obd_connect_data), lustre_swab_connect);
745 EXPORT_SYMBOL(RMF_CONNECT_DATA);
747 const struct req_msg_field RMF_DLM_REQ =
748 DEFINE_MSGF("dlm_req", 0,
749 sizeof(struct ldlm_request), lustre_swab_ldlm_request);
750 EXPORT_SYMBOL(RMF_DLM_REQ);
752 const struct req_msg_field RMF_DLM_REP =
753 DEFINE_MSGF("dlm_rep", 0,
754 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply);
755 EXPORT_SYMBOL(RMF_DLM_REP);
757 const struct req_msg_field RMF_LDLM_INTENT =
758 DEFINE_MSGF("ldlm_intent", 0,
759 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent);
760 EXPORT_SYMBOL(RMF_LDLM_INTENT);
762 const struct req_msg_field RMF_DLM_LVB =
763 DEFINE_MSGF("dlm_lvb", 0, sizeof(struct ost_lvb), NULL);
764 EXPORT_SYMBOL(RMF_DLM_LVB);
766 const struct req_msg_field RMF_MDT_MD =
767 DEFINE_MSGF("mdt_md", 0, MIN_MD_SIZE, NULL);
768 EXPORT_SYMBOL(RMF_MDT_MD);
770 const struct req_msg_field RMF_REC_REINT =
771 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
772 lustre_swab_mdt_rec_reint);
773 EXPORT_SYMBOL(RMF_REC_REINT);
775 const struct req_msg_field RMF_REC_JOINFILE =
776 DEFINE_MSGF("rec_joinfile", 0, sizeof(struct mdt_rec_join),
777 lustre_swab_mdt_rec_join);
778 EXPORT_SYMBOL(RMF_REC_JOINFILE);
780 /* FIXME: this length should be defined as a macro */
781 const struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1, NULL);
782 EXPORT_SYMBOL(RMF_EADATA);
784 const struct req_msg_field RMF_ACL =
785 DEFINE_MSGF("acl", 0, LUSTRE_POSIX_ACL_MAX_SIZE, NULL);
786 EXPORT_SYMBOL(RMF_ACL);
788 const struct req_msg_field RMF_LOGCOOKIES =
789 DEFINE_MSGF("logcookies", 0, sizeof(struct llog_cookie), NULL);
790 EXPORT_SYMBOL(RMF_LOGCOOKIES);
792 const struct req_msg_field RMF_CAPA1 =
793 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
794 lustre_swab_lustre_capa);
795 EXPORT_SYMBOL(RMF_CAPA1);
797 const struct req_msg_field RMF_CAPA2 =
798 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
799 lustre_swab_lustre_capa);
800 EXPORT_SYMBOL(RMF_CAPA2);
805 const struct req_msg_field RMF_OST_BODY =
806 DEFINE_MSGF("ost_body", 0,
807 sizeof(struct ost_body), lustre_swab_ost_body);
808 EXPORT_SYMBOL(RMF_OST_BODY);
810 const struct req_msg_field RMF_OBD_IOOBJ =
811 DEFINE_MSGF("obd_ioobj", 0,
812 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj);
813 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
815 const struct req_msg_field RMF_NIOBUF_REMOTE =
816 DEFINE_MSGF("niobuf_remote", 0, -1, lustre_swab_niobuf_remote);
817 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
819 const struct req_msg_field RMF_OBD_ID =
820 DEFINE_MSGF("obd_id", 0,
821 sizeof(obd_id), lustre_swab_ost_last_id);
822 EXPORT_SYMBOL(RMF_OBD_ID);
824 const struct req_msg_field RMF_FIEMAP_KEY =
825 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
827 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
829 const struct req_msg_field RMF_FIEMAP_VAL =
830 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap);
831 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
842 const struct req_msg_field **d;
846 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
860 #define DEFINE_REQ_FMT0(name, client, server) \
861 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
863 const struct req_format RQF_OBD_PING =
864 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
865 EXPORT_SYMBOL(RQF_OBD_PING);
867 const struct req_format RQF_SEC_CTX =
868 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
869 EXPORT_SYMBOL(RQF_SEC_CTX);
871 const struct req_format RQF_MGS_TARGET_REG =
872 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
873 mgs_target_info_only);
874 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
876 const struct req_format RQF_MGS_SET_INFO =
877 DEFINE_REQ_FMT0("MGS_SET_INTO", mgs_set_info,
879 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
881 const struct req_format RQF_LOG_CANCEL =
882 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
883 EXPORT_SYMBOL(RQF_LOG_CANCEL);
885 const struct req_format RQF_MDS_QUOTACHECK =
886 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
887 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
889 const struct req_format RQF_OST_QUOTACHECK =
890 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
891 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
893 const struct req_format RQF_MDS_QUOTACTL =
894 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
895 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
897 const struct req_format RQF_OST_QUOTACTL =
898 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
899 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
901 const struct req_format RQF_QC_CALLBACK =
902 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
903 EXPORT_SYMBOL(RQF_QC_CALLBACK);
905 const struct req_format RQF_MDS_QUOTA_DQACQ =
906 DEFINE_REQ_FMT0("MDS_QUOTA_DQACQ", qunit_data_only, qunit_data_only);
907 EXPORT_SYMBOL(RQF_MDS_QUOTA_DQACQ);
909 const struct req_format RQF_SEQ_QUERY =
910 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
911 EXPORT_SYMBOL(RQF_SEQ_QUERY);
913 const struct req_format RQF_FLD_QUERY =
914 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
915 EXPORT_SYMBOL(RQF_FLD_QUERY);
917 const struct req_format RQF_MDS_GETSTATUS =
918 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
919 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
921 const struct req_format RQF_MDS_STATFS =
922 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
923 EXPORT_SYMBOL(RQF_MDS_STATFS);
925 const struct req_format RQF_MDS_SYNC =
926 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
927 EXPORT_SYMBOL(RQF_MDS_SYNC);
929 const struct req_format RQF_MDS_GETATTR =
930 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
931 EXPORT_SYMBOL(RQF_MDS_GETATTR);
933 const struct req_format RQF_MDS_GETXATTR =
934 DEFINE_REQ_FMT0("MDS_GETXATTR",
935 mds_getxattr_client, mds_getxattr_server);
936 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
938 const struct req_format RQF_MDS_GETATTR_NAME =
939 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
940 mds_getattr_name_client, mds_getattr_server);
941 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
943 const struct req_format RQF_MDS_REINT =
944 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
945 EXPORT_SYMBOL(RQF_MDS_REINT);
947 const struct req_format RQF_MDS_REINT_CREATE =
948 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
949 mds_reint_create_client, mdt_body_capa);
950 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
952 const struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
953 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
954 mds_reint_create_rmt_acl_client, mdt_body_capa);
955 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
957 const struct req_format RQF_MDS_REINT_CREATE_SLAVE =
958 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
959 mds_reint_create_slave_client, mdt_body_capa);
960 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
962 const struct req_format RQF_MDS_REINT_CREATE_SYM =
963 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
964 mds_reint_create_sym_client, mdt_body_capa);
965 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
967 const struct req_format RQF_MDS_REINT_OPEN =
968 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
969 mds_reint_open_client, mds_reint_open_server);
970 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
972 const struct req_format RQF_MDS_REINT_UNLINK =
973 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
974 mds_last_unlink_server);
975 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
977 const struct req_format RQF_MDS_REINT_LINK =
978 DEFINE_REQ_FMT0("MDS_REINT_LINK",
979 mds_reint_link_client, mdt_body_only);
980 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
982 const struct req_format RQF_MDS_REINT_RENAME =
983 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
984 mds_last_unlink_server);
985 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
987 const struct req_format RQF_MDS_REINT_SETATTR =
988 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
989 mds_reint_setattr_client, mds_setattr_server);
990 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
992 const struct req_format RQF_MDS_REINT_SETXATTR =
993 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
994 mds_reint_setxattr_client, mdt_body_only);
995 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
997 const struct req_format RQF_MDS_CONNECT =
998 DEFINE_REQ_FMT0("MDS_CONNECT",
999 obd_connect_client, obd_connect_server);
1000 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1002 const struct req_format RQF_MDS_DISCONNECT =
1003 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1004 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1006 const struct req_format RQF_MDS_SET_INFO =
1007 DEFINE_REQ_FMT0("MDS_SET_INFO", mds_set_info_client, empty);
1008 EXPORT_SYMBOL(RQF_MDS_SET_INFO);
1010 const struct req_format RQF_LDLM_ENQUEUE =
1011 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1012 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1013 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1015 const struct req_format RQF_LDLM_ENQUEUE_LVB =
1016 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1017 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1018 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1020 const struct req_format RQF_LDLM_CONVERT =
1021 DEFINE_REQ_FMT0("LDLM_CONVERT",
1022 ldlm_enqueue_client, ldlm_enqueue_server);
1023 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1025 const struct req_format RQF_LDLM_CANCEL =
1026 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1027 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1029 const struct req_format RQF_LDLM_CALLBACK =
1030 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1031 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1033 const struct req_format RQF_LDLM_CP_CALLBACK =
1034 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1035 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1037 const struct req_format RQF_LDLM_BL_CALLBACK =
1038 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1039 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1041 const struct req_format RQF_LDLM_GL_CALLBACK =
1042 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1043 ldlm_gl_callback_server);
1044 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1046 const struct req_format RQF_LDLM_INTENT =
1047 DEFINE_REQ_FMT0("LDLM_INTENT",
1048 ldlm_intent_client, ldlm_intent_server);
1049 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1051 const struct req_format RQF_LDLM_INTENT_GETATTR =
1052 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1053 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1054 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1056 const struct req_format RQF_LDLM_INTENT_OPEN =
1057 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1058 ldlm_intent_open_client, ldlm_intent_open_server);
1059 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1061 const struct req_format RQF_LDLM_INTENT_CREATE =
1062 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1063 ldlm_intent_create_client, ldlm_intent_getattr_server);
1064 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1066 const struct req_format RQF_LDLM_INTENT_UNLINK =
1067 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1068 ldlm_intent_unlink_client, ldlm_intent_server);
1069 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1071 const struct req_format RQF_MDS_CLOSE =
1072 DEFINE_REQ_FMT0("MDS_CLOSE",
1073 mdt_close_client, mds_last_unlink_server);
1074 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1076 const struct req_format RQF_MDS_PIN =
1077 DEFINE_REQ_FMT0("MDS_PIN",
1078 mdt_body_capa, mdt_body_only);
1079 EXPORT_SYMBOL(RQF_MDS_PIN);
1081 const struct req_format RQF_MDS_UNPIN =
1082 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1083 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1085 const struct req_format RQF_MDS_DONE_WRITING =
1086 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1087 mdt_close_client, mdt_body_only);
1088 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1090 const struct req_format RQF_MDS_READPAGE =
1091 DEFINE_REQ_FMT0("MDS_READPAGE",
1092 mdt_body_capa, mdt_body_only);
1093 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1095 /* This is for split */
1096 const struct req_format RQF_MDS_WRITEPAGE =
1097 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1098 mdt_body_capa, mdt_body_only);
1099 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1101 const struct req_format RQF_MDS_IS_SUBDIR =
1102 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1103 mdt_body_only, mdt_body_only);
1104 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1106 const struct req_format RQF_LLOG_CATINFO =
1107 DEFINE_REQ_FMT0("LLOG_CATINFO",
1108 llog_catinfo_client, llog_catinfo_server);
1109 EXPORT_SYMBOL(RQF_LLOG_CATINFO);
1111 const struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1112 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1113 llog_origin_handle_create_client, llogd_body_only);
1114 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1116 const struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1117 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1118 llogd_body_only, llogd_body_only);
1119 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1121 const struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1122 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1123 llogd_body_only, llog_origin_handle_next_block_server);
1124 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1126 const struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1127 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1128 llogd_body_only, llog_origin_handle_next_block_server);
1129 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1131 const struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1132 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1133 llogd_body_only, llog_log_hdr_only);
1134 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1136 const struct req_format RQF_LLOG_ORIGIN_CONNECT =
1137 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1138 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1140 const struct req_format RQF_OST_CONNECT =
1141 DEFINE_REQ_FMT0("OST_CONNECT",
1142 obd_connect_client, obd_connect_server);
1143 EXPORT_SYMBOL(RQF_OST_CONNECT);
1145 const struct req_format RQF_OST_DISCONNECT =
1146 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1147 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1149 const struct req_format RQF_OST_GETATTR =
1150 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1151 EXPORT_SYMBOL(RQF_OST_GETATTR);
1153 const struct req_format RQF_OST_SETATTR =
1154 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1155 EXPORT_SYMBOL(RQF_OST_SETATTR);
1157 const struct req_format RQF_OST_CREATE =
1158 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1159 EXPORT_SYMBOL(RQF_OST_CREATE);
1161 const struct req_format RQF_OST_PUNCH =
1162 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1163 EXPORT_SYMBOL(RQF_OST_PUNCH);
1165 const struct req_format RQF_OST_SYNC =
1166 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1167 EXPORT_SYMBOL(RQF_OST_SYNC);
1169 const struct req_format RQF_OST_DESTROY =
1170 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1171 EXPORT_SYMBOL(RQF_OST_DESTROY);
1173 const struct req_format RQF_OST_BRW =
1174 DEFINE_REQ_FMT0("OST_BRW", ost_brw_client, ost_brw_server);
1175 EXPORT_SYMBOL(RQF_OST_BRW);
1177 const struct req_format RQF_OST_STATFS =
1178 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1179 EXPORT_SYMBOL(RQF_OST_STATFS);
1181 const struct req_format RQF_OST_SET_INFO =
1182 DEFINE_REQ_FMT0("OST_SET_INFO", ost_set_info_client, empty);
1183 EXPORT_SYMBOL(RQF_OST_SET_INFO);
1185 const struct req_format RQF_OST_GET_INFO_GENERIC =
1186 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1187 ost_get_info_generic_server);
1188 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1190 const struct req_format RQF_OST_GET_INFO_LAST_ID =
1191 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1192 ost_get_last_id_server);
1193 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1195 const struct req_format RQF_OST_GET_INFO_FIEMAP =
1196 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1197 ost_get_fiemap_server);
1198 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1201 #if !defined(__REQ_LAYOUT_USER__)
1203 int req_layout_init(void)
1209 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1210 struct req_format *rf;
1212 rf = (struct req_format *)req_formats[i];
1214 for (j = 0; j < RCL_NR; ++j) {
1215 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1216 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1217 struct req_msg_field *field;
1219 field = (typeof(field))rf->rf_fields[j].d[k];
1220 LASSERT(field->rmf_offset[i][j] == 0);
1222 * k + 1 to detect unused format/field
1225 field->rmf_offset[i][j] = k + 1;
1231 EXPORT_SYMBOL(req_layout_init);
1233 void req_layout_fini(void)
1236 EXPORT_SYMBOL(req_layout_fini);
1238 void req_capsule_init_area(struct req_capsule *pill)
1242 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1243 pill->rc_area[RCL_CLIENT][i] = -1;
1244 pill->rc_area[RCL_SERVER][i] = -1;
1247 EXPORT_SYMBOL(req_capsule_init_area);
1250 * Initialize capsule.
1252 * @area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1253 * variable-sized fields.
1255 void req_capsule_init(struct req_capsule *pill,
1256 struct ptlrpc_request *req,
1257 enum req_location location)
1259 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1261 memset(pill, 0, sizeof *pill);
1263 pill->rc_loc = location;
1264 req_capsule_init_area(pill);
1266 EXPORT_SYMBOL(req_capsule_init);
1268 void req_capsule_fini(struct req_capsule *pill)
1271 EXPORT_SYMBOL(req_capsule_fini);
1273 static int __req_format_is_sane(const struct req_format *fmt)
1276 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1277 req_formats[fmt->rf_idx] == fmt;
1280 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1281 enum req_location loc)
1283 struct ptlrpc_request *req;
1286 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1289 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1291 LASSERT(pill->rc_fmt == NULL);
1292 LASSERT(__req_format_is_sane(fmt));
1296 EXPORT_SYMBOL(req_capsule_set);
1298 int req_capsule_filled_sizes(struct req_capsule *pill,
1299 enum req_location loc)
1301 const struct req_format *fmt = pill->rc_fmt;
1304 LASSERT(fmt != NULL);
1306 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1307 if (pill->rc_area[loc][i] == -1) {
1308 pill->rc_area[loc][i] =
1309 fmt->rf_fields[loc].d[i]->rmf_size;
1310 if (pill->rc_area[loc][i] == -1) {
1311 /* skip the following fields */
1312 LASSERT(loc != RCL_SERVER);
1319 EXPORT_SYMBOL(req_capsule_filled_sizes);
1321 int req_capsule_server_pack(struct req_capsule *pill)
1323 const struct req_format *fmt;
1327 LASSERT(pill->rc_loc == RCL_SERVER);
1329 LASSERT(fmt != NULL);
1331 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1332 rc = lustre_pack_reply(pill->rc_req, count,
1333 pill->rc_area[RCL_SERVER], NULL);
1335 DEBUG_REQ(D_ERROR, pill->rc_req,
1336 "Cannot pack %d fields in format `%s': ",
1337 count, fmt->rf_name);
1341 EXPORT_SYMBOL(req_capsule_server_pack);
1343 static int __req_capsule_offset(const struct req_capsule *pill,
1344 const struct req_msg_field *field,
1345 enum req_location loc)
1349 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1350 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1351 pill->rc_fmt->rf_name,
1352 field->rmf_name, offset, loc);
1354 LASSERT(0 <= offset && offset < (sizeof(pill->rc_swabbed) << 3));
1358 static void *__req_capsule_get(struct req_capsule *pill,
1359 const struct req_msg_field *field,
1360 enum req_location loc,
1361 void (*swabber)( void *))
1363 const struct req_format *fmt;
1364 struct lustre_msg *msg;
1369 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1371 static const char *rcl_names[RCL_NR] = {
1372 [RCL_CLIENT] = "client",
1373 [RCL_SERVER] = "server"
1376 LASSERT(pill != NULL);
1377 LASSERT(pill != LP_POISON);
1379 LASSERT(fmt != NULL);
1380 LASSERT(fmt != LP_POISON);
1381 LASSERT(__req_format_is_sane(fmt));
1383 offset = __req_capsule_offset(pill, field, loc);
1385 msg = __req_msg(pill, loc);
1386 LASSERT(msg != NULL);
1388 getter = (field->rmf_flags & RMF_F_STRING) ?
1389 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1391 if (pill->rc_area[loc][offset] != -1)
1392 len = pill->rc_area[loc][offset];
1394 len = max(field->rmf_size, 0);
1395 value = getter(msg, offset, len);
1397 swabber = swabber ?: field->rmf_swabber;
1398 if (!(pill->rc_swabbed & (1 << offset)) && loc != pill->rc_loc &&
1399 swabber != NULL && value != NULL &&
1400 lustre_msg_swabbed(msg)) {
1402 pill->rc_swabbed |= (1 << offset);
1404 if (value == NULL) {
1405 DEBUG_REQ(D_ERROR, pill->rc_req,
1406 "Wrong buffer for field `%s' (%d of %d) "
1407 "in format `%s': %d vs. %d (%s)\n",
1408 field->rmf_name, offset, lustre_msg_bufcount(msg), fmt->rf_name,
1409 lustre_msg_buflen(msg, offset), len,
1416 void *req_capsule_client_get(struct req_capsule *pill,
1417 const struct req_msg_field *field)
1419 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1421 EXPORT_SYMBOL(req_capsule_client_get);
1423 void *req_capsule_client_swab_get(struct req_capsule *pill,
1424 const struct req_msg_field *field,
1425 void (*swabber)(void* ))
1427 return __req_capsule_get(pill, field, RCL_CLIENT, swabber);
1429 EXPORT_SYMBOL(req_capsule_client_swab_get);
1431 void *req_capsule_client_sized_get(struct req_capsule *pill,
1432 const struct req_msg_field *field,
1435 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1436 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1438 EXPORT_SYMBOL(req_capsule_client_sized_get);
1440 void *req_capsule_server_get(struct req_capsule *pill,
1441 const struct req_msg_field *field)
1443 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1445 EXPORT_SYMBOL(req_capsule_server_get);
1447 void *req_capsule_server_swab_get(struct req_capsule *pill,
1448 const struct req_msg_field *field,
1451 return __req_capsule_get(pill, field, RCL_SERVER, swabber);
1453 EXPORT_SYMBOL(req_capsule_server_swab_get);
1456 void *req_capsule_server_sized_get(struct req_capsule *pill,
1457 const struct req_msg_field *field,
1460 req_capsule_set_size(pill, field, RCL_SERVER, len);
1461 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1463 EXPORT_SYMBOL(req_capsule_server_sized_get);
1465 const void *req_capsule_other_get(struct req_capsule *pill,
1466 const struct req_msg_field *field)
1468 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL);
1470 EXPORT_SYMBOL(req_capsule_other_get);
1472 void req_capsule_set_size(struct req_capsule *pill,
1473 const struct req_msg_field *field,
1474 enum req_location loc, int size)
1476 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1478 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1480 EXPORT_SYMBOL(req_capsule_set_size);
1482 /* NB: this function doesn't correspond with req_capsule_set_size(), which
1483 * actually sets the size in pill.rc_area[loc][offset], but this function
1484 * returns the message buflen[offset], maybe we should use another name.
1486 int req_capsule_get_size(const struct req_capsule *pill,
1487 const struct req_msg_field *field,
1488 enum req_location loc)
1490 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1492 return lustre_msg_buflen(__req_msg(pill, loc),
1493 __req_capsule_offset(pill, field, loc));
1495 EXPORT_SYMBOL(req_capsule_get_size);
1497 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1499 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1500 pill->rc_fmt->rf_fields[loc].nr,
1501 pill->rc_area[loc]);
1504 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
1505 enum req_location loc)
1509 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
1513 for (; i < fmt->rf_fields[loc].nr; ++i)
1514 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
1515 size += size_round(fmt->rf_fields[loc].d[i]->rmf_size);
1519 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1521 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
1526 const struct req_format *old;
1528 LASSERT(pill->rc_fmt != NULL);
1529 LASSERT(__req_format_is_sane(fmt));
1533 * Sanity checking...
1535 for (i = 0; i < RCL_NR; ++i) {
1536 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
1537 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
1538 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
1541 * Last field in old format can be shorter than in new.
1543 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
1544 FMT_FIELD(old, i, j)->rmf_size);
1546 /* last field should be returned to the unswabbed state */
1547 pill->rc_swabbed &= ~(__u32)(1 << j);
1550 EXPORT_SYMBOL(req_capsule_extend);
1552 int req_capsule_has_field(const struct req_capsule *pill,
1553 const struct req_msg_field *field,
1554 enum req_location loc)
1556 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1558 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1560 EXPORT_SYMBOL(req_capsule_has_field);
1562 int req_capsule_field_present(const struct req_capsule *pill,
1563 const struct req_msg_field *field,
1564 enum req_location loc)
1568 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1569 LASSERT(req_capsule_has_field(pill, field, loc));
1571 offset = __req_capsule_offset(pill, field, loc);
1572 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
1574 EXPORT_SYMBOL(req_capsule_field_present);
1576 void req_capsule_shrink(struct req_capsule *pill,
1577 const struct req_msg_field *field,
1578 unsigned int newlen,
1579 enum req_location loc)
1581 const struct req_format *fmt;
1582 struct lustre_msg *msg;
1587 LASSERT(fmt != NULL);
1588 LASSERT(__req_format_is_sane(fmt));
1589 LASSERT(req_capsule_has_field(pill, field, loc));
1590 LASSERT(req_capsule_field_present(pill, field, loc));
1592 offset = __req_capsule_offset(pill, field, loc);
1594 msg = __req_msg(pill, loc);
1595 len = lustre_msg_buflen(msg, offset);
1596 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
1597 fmt->rf_name, field->rmf_name, len, newlen);
1599 if (loc == RCL_CLIENT)
1600 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
1603 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
1606 EXPORT_SYMBOL(req_capsule_shrink);
1608 /* __REQ_LAYOUT_USER__ */