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[] = {
108 static const struct req_msg_field *quota_adjust_qunit_only[] = {
110 &RMF_QUOTA_ADJUST_QUNIT
113 static const struct req_msg_field *qunit_data_only[] = {
118 static const struct req_msg_field *mdt_close_client[] = {
125 static const struct req_msg_field *obd_statfs_server[] = {
130 static const struct req_msg_field *seq_query_client[] = {
136 static const struct req_msg_field *seq_query_server[] = {
141 static const struct req_msg_field *fld_query_client[] = {
147 static const struct req_msg_field *fld_query_server[] = {
152 static const struct req_msg_field *mds_getattr_name_client[] = {
159 static const struct req_msg_field *mds_reint_client[] = {
164 static const struct req_msg_field *mds_reint_create_client[] = {
171 static const struct req_msg_field *mds_reint_create_slave_client[] = {
180 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
189 static const struct req_msg_field *mds_reint_create_sym_client[] = {
198 static const struct req_msg_field *mds_reint_open_client[] = {
207 static const struct req_msg_field *mds_reint_open_server[] = {
216 static const struct req_msg_field *mds_reint_unlink_client[] = {
224 static const struct req_msg_field *mds_reint_link_client[] = {
233 static const struct req_msg_field *mds_reint_rename_client[] = {
243 static const struct req_msg_field *mds_last_unlink_server[] = {
252 static const struct req_msg_field *mds_reint_setattr_client[] = {
262 static const struct req_msg_field *mds_reint_setxattr_client[] = {
270 static const struct req_msg_field *obd_connect_client[] = {
278 static const struct req_msg_field *obd_connect_server[] = {
283 static const struct req_msg_field *mds_set_info_client[] = {
289 static const struct req_msg_field *ldlm_enqueue_client[] = {
294 static const struct req_msg_field *ldlm_enqueue_server[] = {
299 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
305 static const struct req_msg_field *ldlm_cp_callback_client[] = {
311 static const struct req_msg_field *ldlm_gl_callback_server[] = {
316 static const struct req_msg_field *ldlm_intent_client[] = {
323 static const struct req_msg_field *ldlm_intent_server[] = {
331 static const struct req_msg_field *ldlm_intent_open_server[] = {
341 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
345 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
350 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
359 static const struct req_msg_field *ldlm_intent_create_client[] = {
363 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
369 static const struct req_msg_field *ldlm_intent_open_client[] = {
373 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
381 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
385 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
390 static const struct req_msg_field *mds_getxattr_client[] = {
398 static const struct req_msg_field *mds_getxattr_server[] = {
404 static const struct req_msg_field *mds_getattr_server[] = {
413 static const struct req_msg_field *mds_setattr_server[] = {
422 static const struct req_msg_field *llog_catinfo_client[] = {
428 static const struct req_msg_field *llog_catinfo_server[] = {
433 static const struct req_msg_field *llog_origin_handle_create_client[] = {
439 static const struct req_msg_field *llogd_body_only[] = {
444 static const struct req_msg_field *llog_log_hdr_only[] = {
449 static const struct req_msg_field *llogd_conn_body_only[] = {
454 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
460 static const struct req_msg_field *ost_body_only[] = {
465 static const struct req_msg_field *ost_body_capa[] = {
471 static const struct req_msg_field *ost_destroy_client[] = {
479 static const struct req_msg_field *ost_brw_client[] = {
487 static const struct req_msg_field *ost_brw_server[] = {
493 static const struct req_msg_field *ost_set_info_client[] = {
499 static const struct req_msg_field *ost_get_info_generic_server[] = {
504 static const struct req_msg_field *ost_get_info_generic_client[] = {
509 static const struct req_msg_field *ost_get_last_id_server[] = {
514 static const struct req_msg_field *ost_get_fiemap_client[] = {
520 static const struct req_msg_field *ost_get_fiemap_server[] = {
525 static const struct req_format *req_formats[] = {
538 &RQF_MDS_GETATTR_NAME,
547 &RQF_MDS_DONE_WRITING,
549 &RQF_MDS_REINT_CREATE,
550 &RQF_MDS_REINT_CREATE_RMT_ACL,
551 &RQF_MDS_REINT_CREATE_SLAVE,
552 &RQF_MDS_REINT_CREATE_SYM,
554 &RQF_MDS_REINT_UNLINK,
556 &RQF_MDS_REINT_RENAME,
557 &RQF_MDS_REINT_SETATTR,
558 &RQF_MDS_REINT_SETXATTR,
561 &RQF_MDS_QUOTA_DQACQ,
567 &RQF_OST_QUOTA_ADJUST_QUNIT,
577 &RQF_OST_GET_INFO_GENERIC,
578 &RQF_OST_GET_INFO_LAST_ID,
579 &RQF_OST_GET_INFO_FIEMAP,
581 &RQF_LDLM_ENQUEUE_LVB,
585 &RQF_LDLM_CP_CALLBACK,
586 &RQF_LDLM_BL_CALLBACK,
587 &RQF_LDLM_GL_CALLBACK,
589 &RQF_LDLM_INTENT_GETATTR,
590 &RQF_LDLM_INTENT_OPEN,
591 &RQF_LDLM_INTENT_CREATE,
592 &RQF_LDLM_INTENT_UNLINK,
595 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
596 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
597 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
598 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
599 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
600 &RQF_LLOG_ORIGIN_CONNECT
603 struct req_msg_field {
605 const char *rmf_name;
607 * Field length. (-1) means "variable length".
610 void (*rmf_swabber)(void *);
611 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
615 RMF_F_STRING = 1 << 0
623 #define DEFINE_MSGF(name, flags, size, swabber) { \
624 .rmf_name = (name), \
625 .rmf_flags = (flags), \
626 .rmf_size = (size), \
627 .rmf_swabber = (void (*)(void*))(swabber) \
630 const struct req_msg_field RMF_GENERIC_DATA =
631 DEFINE_MSGF("generic_data", 0,
633 EXPORT_SYMBOL(RMF_GENERIC_DATA);
635 const struct req_msg_field RMF_MGS_TARGET_INFO =
636 DEFINE_MSGF("mgs_target_info", 0,
637 sizeof(struct mgs_target_info),
638 lustre_swab_mgs_target_info);
639 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
641 const struct req_msg_field RMF_MGS_SEND_PARAM =
642 DEFINE_MSGF("mgs_send_param", 0,
643 sizeof(struct mgs_send_param),
645 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
647 const struct req_msg_field RMF_SETINFO_VAL =
648 DEFINE_MSGF("setinfo_val", 0,
649 sizeof(__u32), lustre_swab_generic_32s);
650 EXPORT_SYMBOL(RMF_SETINFO_VAL);
652 const struct req_msg_field RMF_SEQ_OPC =
653 DEFINE_MSGF("seq_query_opc", 0,
654 sizeof(__u32), lustre_swab_generic_32s);
655 EXPORT_SYMBOL(RMF_SEQ_OPC);
657 const struct req_msg_field RMF_SEQ_RANGE =
658 DEFINE_MSGF("seq_query_range", 0,
659 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
660 EXPORT_SYMBOL(RMF_SEQ_RANGE);
662 const struct req_msg_field RMF_FLD_OPC =
663 DEFINE_MSGF("fld_query_opc", 0,
664 sizeof(__u32), lustre_swab_generic_32s);
665 EXPORT_SYMBOL(RMF_FLD_OPC);
667 const struct req_msg_field RMF_FLD_MDFLD =
668 DEFINE_MSGF("fld_query_mdfld", 0,
669 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
670 EXPORT_SYMBOL(RMF_FLD_MDFLD);
672 const struct req_msg_field RMF_MDT_BODY =
673 DEFINE_MSGF("mdt_body", 0,
674 sizeof(struct mdt_body), lustre_swab_mdt_body);
675 EXPORT_SYMBOL(RMF_MDT_BODY);
677 const struct req_msg_field RMF_OBD_QUOTACTL =
678 DEFINE_MSGF("obd_quotactl", 0,
679 sizeof(struct obd_quotactl), lustre_swab_obd_quotactl);
680 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
682 const struct req_msg_field RMF_QUOTA_ADJUST_QUNIT =
683 DEFINE_MSGF("quota_adjust_qunit", 0,
684 sizeof(struct quota_adjust_qunit),
685 lustre_swab_quota_adjust_qunit);
686 EXPORT_SYMBOL(RMF_QUOTA_ADJUST_QUNIT);
688 const struct req_msg_field RMF_QUNIT_DATA =
689 DEFINE_MSGF("qunit_data", 0,
690 sizeof(struct qunit_data), NULL);
691 EXPORT_SYMBOL(RMF_QUNIT_DATA);
693 const struct req_msg_field RMF_MDT_EPOCH =
694 DEFINE_MSGF("mdt_epoch", 0,
695 sizeof(struct mdt_epoch), lustre_swab_mdt_epoch);
696 EXPORT_SYMBOL(RMF_MDT_EPOCH);
698 const struct req_msg_field RMF_PTLRPC_BODY =
699 DEFINE_MSGF("ptlrpc_body", 0,
700 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body);
701 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
703 const struct req_msg_field RMF_OBD_STATFS =
704 DEFINE_MSGF("obd_statfs", 0,
705 sizeof(struct obd_statfs), lustre_swab_obd_statfs);
706 EXPORT_SYMBOL(RMF_OBD_STATFS);
708 const struct req_msg_field RMF_SETINFO_KEY =
709 DEFINE_MSGF("setinfo_key", 0, -1, NULL);
710 EXPORT_SYMBOL(RMF_SETINFO_KEY);
712 const struct req_msg_field RMF_NAME =
713 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL);
714 EXPORT_SYMBOL(RMF_NAME);
716 const struct req_msg_field RMF_SYMTGT =
717 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL);
718 EXPORT_SYMBOL(RMF_SYMTGT);
720 const struct req_msg_field RMF_TGTUUID =
721 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
722 EXPORT_SYMBOL(RMF_TGTUUID);
724 const struct req_msg_field RMF_CLUUID =
725 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
726 EXPORT_SYMBOL(RMF_CLUUID);
728 const struct req_msg_field RMF_STRING =
729 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL);
730 EXPORT_SYMBOL(RMF_STRING);
732 const struct req_msg_field RMF_LLOGD_BODY =
733 DEFINE_MSGF("llogd_body", 0,
734 sizeof(struct llogd_body), lustre_swab_llogd_body);
735 EXPORT_SYMBOL(RMF_LLOGD_BODY);
737 const struct req_msg_field RMF_LLOG_LOG_HDR =
738 DEFINE_MSGF("llog_log_hdr", 0,
739 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr);
740 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
742 const struct req_msg_field RMF_LLOGD_CONN_BODY =
743 DEFINE_MSGF("llogd_conn_body", 0,
744 sizeof(struct llogd_conn_body),
745 lustre_swab_llogd_conn_body);
746 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
749 * connection handle received in MDS_CONNECT request.
753 const struct req_msg_field RMF_CONN =
754 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL);
755 EXPORT_SYMBOL(RMF_CONN);
757 const struct req_msg_field RMF_CONNECT_DATA =
758 DEFINE_MSGF("cdata", 0,
759 sizeof(struct obd_connect_data), lustre_swab_connect);
760 EXPORT_SYMBOL(RMF_CONNECT_DATA);
762 const struct req_msg_field RMF_DLM_REQ =
763 DEFINE_MSGF("dlm_req", 0,
764 sizeof(struct ldlm_request), lustre_swab_ldlm_request);
765 EXPORT_SYMBOL(RMF_DLM_REQ);
767 const struct req_msg_field RMF_DLM_REP =
768 DEFINE_MSGF("dlm_rep", 0,
769 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply);
770 EXPORT_SYMBOL(RMF_DLM_REP);
772 const struct req_msg_field RMF_LDLM_INTENT =
773 DEFINE_MSGF("ldlm_intent", 0,
774 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent);
775 EXPORT_SYMBOL(RMF_LDLM_INTENT);
777 const struct req_msg_field RMF_DLM_LVB =
778 DEFINE_MSGF("dlm_lvb", 0, sizeof(struct ost_lvb), NULL);
779 EXPORT_SYMBOL(RMF_DLM_LVB);
781 const struct req_msg_field RMF_MDT_MD =
782 DEFINE_MSGF("mdt_md", 0, MIN_MD_SIZE, NULL);
783 EXPORT_SYMBOL(RMF_MDT_MD);
785 const struct req_msg_field RMF_REC_REINT =
786 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
787 lustre_swab_mdt_rec_reint);
788 EXPORT_SYMBOL(RMF_REC_REINT);
790 const struct req_msg_field RMF_REC_JOINFILE =
791 DEFINE_MSGF("rec_joinfile", 0, sizeof(struct mdt_rec_join),
792 lustre_swab_mdt_rec_join);
793 EXPORT_SYMBOL(RMF_REC_JOINFILE);
795 /* FIXME: this length should be defined as a macro */
796 const struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1, NULL);
797 EXPORT_SYMBOL(RMF_EADATA);
799 const struct req_msg_field RMF_ACL =
800 DEFINE_MSGF("acl", 0, LUSTRE_POSIX_ACL_MAX_SIZE, NULL);
801 EXPORT_SYMBOL(RMF_ACL);
803 const struct req_msg_field RMF_LOGCOOKIES =
804 DEFINE_MSGF("logcookies", 0, sizeof(struct llog_cookie), NULL);
805 EXPORT_SYMBOL(RMF_LOGCOOKIES);
807 const struct req_msg_field RMF_CAPA1 =
808 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
809 lustre_swab_lustre_capa);
810 EXPORT_SYMBOL(RMF_CAPA1);
812 const struct req_msg_field RMF_CAPA2 =
813 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
814 lustre_swab_lustre_capa);
815 EXPORT_SYMBOL(RMF_CAPA2);
820 const struct req_msg_field RMF_OST_BODY =
821 DEFINE_MSGF("ost_body", 0,
822 sizeof(struct ost_body), lustre_swab_ost_body);
823 EXPORT_SYMBOL(RMF_OST_BODY);
825 const struct req_msg_field RMF_OBD_IOOBJ =
826 DEFINE_MSGF("obd_ioobj", 0,
827 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj);
828 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
830 const struct req_msg_field RMF_NIOBUF_REMOTE =
831 DEFINE_MSGF("niobuf_remote", 0, -1, lustre_swab_niobuf_remote);
832 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
834 const struct req_msg_field RMF_OBD_ID =
835 DEFINE_MSGF("obd_id", 0,
836 sizeof(obd_id), lustre_swab_ost_last_id);
837 EXPORT_SYMBOL(RMF_OBD_ID);
839 const struct req_msg_field RMF_FIEMAP_KEY =
840 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
842 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
844 const struct req_msg_field RMF_FIEMAP_VAL =
845 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap);
846 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
857 const struct req_msg_field **d;
861 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
875 #define DEFINE_REQ_FMT0(name, client, server) \
876 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
878 const struct req_format RQF_OBD_PING =
879 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
880 EXPORT_SYMBOL(RQF_OBD_PING);
882 const struct req_format RQF_SEC_CTX =
883 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
884 EXPORT_SYMBOL(RQF_SEC_CTX);
886 const struct req_format RQF_MGS_TARGET_REG =
887 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
888 mgs_target_info_only);
889 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
891 const struct req_format RQF_MGS_SET_INFO =
892 DEFINE_REQ_FMT0("MGS_SET_INTO", mgs_set_info,
894 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
896 const struct req_format RQF_SEQ_QUERY =
897 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
898 EXPORT_SYMBOL(RQF_SEQ_QUERY);
900 const struct req_format RQF_FLD_QUERY =
901 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
902 EXPORT_SYMBOL(RQF_FLD_QUERY);
904 const struct req_format RQF_LOG_CANCEL =
905 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
906 EXPORT_SYMBOL(RQF_LOG_CANCEL);
908 const struct req_format RQF_MDS_QUOTACHECK =
909 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
910 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
912 const struct req_format RQF_OST_QUOTACHECK =
913 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
914 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
916 const struct req_format RQF_MDS_QUOTACTL =
917 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
918 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
920 const struct req_format RQF_OST_QUOTACTL =
921 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
922 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
924 const struct req_format RQF_OST_QUOTA_ADJUST_QUNIT =
925 DEFINE_REQ_FMT0("OST_QUOTA_ADJUST_QUNIT", quota_adjust_qunit_only,
926 quota_adjust_qunit_only);
927 EXPORT_SYMBOL(RQF_OST_QUOTA_ADJUST_QUNIT);
929 const struct req_format RQF_QC_CALLBACK =
930 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
931 EXPORT_SYMBOL(RQF_QC_CALLBACK);
933 const struct req_format RQF_MDS_QUOTA_DQACQ =
934 DEFINE_REQ_FMT0("MDS_QUOTA_DQACQ", qunit_data_only, qunit_data_only);
935 EXPORT_SYMBOL(RQF_MDS_QUOTA_DQACQ);
937 const struct req_format RQF_MDS_GETSTATUS =
938 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
939 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
941 const struct req_format RQF_MDS_STATFS =
942 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
943 EXPORT_SYMBOL(RQF_MDS_STATFS);
945 const struct req_format RQF_MDS_SYNC =
946 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
947 EXPORT_SYMBOL(RQF_MDS_SYNC);
949 const struct req_format RQF_MDS_GETATTR =
950 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
951 EXPORT_SYMBOL(RQF_MDS_GETATTR);
953 const struct req_format RQF_MDS_GETXATTR =
954 DEFINE_REQ_FMT0("MDS_GETXATTR",
955 mds_getxattr_client, mds_getxattr_server);
956 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
958 const struct req_format RQF_MDS_GETATTR_NAME =
959 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
960 mds_getattr_name_client, mds_getattr_server);
961 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
963 const struct req_format RQF_MDS_REINT =
964 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
965 EXPORT_SYMBOL(RQF_MDS_REINT);
967 const struct req_format RQF_MDS_REINT_CREATE =
968 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
969 mds_reint_create_client, mdt_body_capa);
970 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
972 const struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
973 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
974 mds_reint_create_rmt_acl_client, mdt_body_capa);
975 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
977 const struct req_format RQF_MDS_REINT_CREATE_SLAVE =
978 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
979 mds_reint_create_slave_client, mdt_body_capa);
980 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
982 const struct req_format RQF_MDS_REINT_CREATE_SYM =
983 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
984 mds_reint_create_sym_client, mdt_body_capa);
985 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
987 const struct req_format RQF_MDS_REINT_OPEN =
988 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
989 mds_reint_open_client, mds_reint_open_server);
990 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
992 const struct req_format RQF_MDS_REINT_UNLINK =
993 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
994 mds_last_unlink_server);
995 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
997 const struct req_format RQF_MDS_REINT_LINK =
998 DEFINE_REQ_FMT0("MDS_REINT_LINK",
999 mds_reint_link_client, mdt_body_only);
1000 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1002 const struct req_format RQF_MDS_REINT_RENAME =
1003 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1004 mds_last_unlink_server);
1005 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1007 const struct req_format RQF_MDS_REINT_SETATTR =
1008 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1009 mds_reint_setattr_client, mds_setattr_server);
1010 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1012 const struct req_format RQF_MDS_REINT_SETXATTR =
1013 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1014 mds_reint_setxattr_client, mdt_body_only);
1015 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1017 const struct req_format RQF_MDS_CONNECT =
1018 DEFINE_REQ_FMT0("MDS_CONNECT",
1019 obd_connect_client, obd_connect_server);
1020 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1022 const struct req_format RQF_MDS_DISCONNECT =
1023 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1024 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1026 const struct req_format RQF_MDS_SET_INFO =
1027 DEFINE_REQ_FMT0("MDS_SET_INFO", mds_set_info_client, empty);
1028 EXPORT_SYMBOL(RQF_MDS_SET_INFO);
1030 const struct req_format RQF_LDLM_ENQUEUE =
1031 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1032 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1033 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1035 const struct req_format RQF_LDLM_ENQUEUE_LVB =
1036 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1037 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1038 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1040 const struct req_format RQF_LDLM_CONVERT =
1041 DEFINE_REQ_FMT0("LDLM_CONVERT",
1042 ldlm_enqueue_client, ldlm_enqueue_server);
1043 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1045 const struct req_format RQF_LDLM_CANCEL =
1046 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1047 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1049 const struct req_format RQF_LDLM_CALLBACK =
1050 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1051 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1053 const struct req_format RQF_LDLM_CP_CALLBACK =
1054 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1055 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1057 const struct req_format RQF_LDLM_BL_CALLBACK =
1058 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1059 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1061 const struct req_format RQF_LDLM_GL_CALLBACK =
1062 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1063 ldlm_gl_callback_server);
1064 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1066 const struct req_format RQF_LDLM_INTENT =
1067 DEFINE_REQ_FMT0("LDLM_INTENT",
1068 ldlm_intent_client, ldlm_intent_server);
1069 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1071 const struct req_format RQF_LDLM_INTENT_GETATTR =
1072 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1073 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1074 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1076 const struct req_format RQF_LDLM_INTENT_OPEN =
1077 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1078 ldlm_intent_open_client, ldlm_intent_open_server);
1079 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1081 const struct req_format RQF_LDLM_INTENT_CREATE =
1082 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1083 ldlm_intent_create_client, ldlm_intent_getattr_server);
1084 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1086 const struct req_format RQF_LDLM_INTENT_UNLINK =
1087 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1088 ldlm_intent_unlink_client, ldlm_intent_server);
1089 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1091 const struct req_format RQF_MDS_CLOSE =
1092 DEFINE_REQ_FMT0("MDS_CLOSE",
1093 mdt_close_client, mds_last_unlink_server);
1094 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1096 const struct req_format RQF_MDS_PIN =
1097 DEFINE_REQ_FMT0("MDS_PIN",
1098 mdt_body_capa, mdt_body_only);
1099 EXPORT_SYMBOL(RQF_MDS_PIN);
1101 const struct req_format RQF_MDS_UNPIN =
1102 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1103 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1105 const struct req_format RQF_MDS_DONE_WRITING =
1106 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1107 mdt_close_client, mdt_body_only);
1108 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1110 const struct req_format RQF_MDS_READPAGE =
1111 DEFINE_REQ_FMT0("MDS_READPAGE",
1112 mdt_body_capa, mdt_body_only);
1113 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1115 /* This is for split */
1116 const struct req_format RQF_MDS_WRITEPAGE =
1117 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1118 mdt_body_capa, mdt_body_only);
1119 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1121 const struct req_format RQF_MDS_IS_SUBDIR =
1122 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1123 mdt_body_only, mdt_body_only);
1124 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1126 const struct req_format RQF_LLOG_CATINFO =
1127 DEFINE_REQ_FMT0("LLOG_CATINFO",
1128 llog_catinfo_client, llog_catinfo_server);
1129 EXPORT_SYMBOL(RQF_LLOG_CATINFO);
1131 const struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1132 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1133 llog_origin_handle_create_client, llogd_body_only);
1134 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1136 const struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1137 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1138 llogd_body_only, llogd_body_only);
1139 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1141 const struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1142 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1143 llogd_body_only, llog_origin_handle_next_block_server);
1144 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1146 const struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1147 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1148 llogd_body_only, llog_origin_handle_next_block_server);
1149 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1151 const struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1152 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1153 llogd_body_only, llog_log_hdr_only);
1154 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1156 const struct req_format RQF_LLOG_ORIGIN_CONNECT =
1157 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1158 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1160 const struct req_format RQF_OST_CONNECT =
1161 DEFINE_REQ_FMT0("OST_CONNECT",
1162 obd_connect_client, obd_connect_server);
1163 EXPORT_SYMBOL(RQF_OST_CONNECT);
1165 const struct req_format RQF_OST_DISCONNECT =
1166 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1167 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1169 const struct req_format RQF_OST_GETATTR =
1170 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1171 EXPORT_SYMBOL(RQF_OST_GETATTR);
1173 const struct req_format RQF_OST_SETATTR =
1174 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1175 EXPORT_SYMBOL(RQF_OST_SETATTR);
1177 const struct req_format RQF_OST_CREATE =
1178 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1179 EXPORT_SYMBOL(RQF_OST_CREATE);
1181 const struct req_format RQF_OST_PUNCH =
1182 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1183 EXPORT_SYMBOL(RQF_OST_PUNCH);
1185 const struct req_format RQF_OST_SYNC =
1186 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1187 EXPORT_SYMBOL(RQF_OST_SYNC);
1189 const struct req_format RQF_OST_DESTROY =
1190 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1191 EXPORT_SYMBOL(RQF_OST_DESTROY);
1193 const struct req_format RQF_OST_BRW =
1194 DEFINE_REQ_FMT0("OST_BRW", ost_brw_client, ost_brw_server);
1195 EXPORT_SYMBOL(RQF_OST_BRW);
1197 const struct req_format RQF_OST_STATFS =
1198 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1199 EXPORT_SYMBOL(RQF_OST_STATFS);
1201 const struct req_format RQF_OST_SET_INFO =
1202 DEFINE_REQ_FMT0("OST_SET_INFO", ost_set_info_client, empty);
1203 EXPORT_SYMBOL(RQF_OST_SET_INFO);
1205 const struct req_format RQF_OST_GET_INFO_GENERIC =
1206 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1207 ost_get_info_generic_server);
1208 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1210 const struct req_format RQF_OST_GET_INFO_LAST_ID =
1211 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1212 ost_get_last_id_server);
1213 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1215 const struct req_format RQF_OST_GET_INFO_FIEMAP =
1216 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1217 ost_get_fiemap_server);
1218 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1221 #if !defined(__REQ_LAYOUT_USER__)
1223 int req_layout_init(void)
1229 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1230 struct req_format *rf;
1232 rf = (struct req_format *)req_formats[i];
1234 for (j = 0; j < RCL_NR; ++j) {
1235 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1236 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1237 struct req_msg_field *field;
1239 field = (typeof(field))rf->rf_fields[j].d[k];
1240 LASSERT(field->rmf_offset[i][j] == 0);
1242 * k + 1 to detect unused format/field
1245 field->rmf_offset[i][j] = k + 1;
1251 EXPORT_SYMBOL(req_layout_init);
1253 void req_layout_fini(void)
1256 EXPORT_SYMBOL(req_layout_fini);
1258 void req_capsule_init_area(struct req_capsule *pill)
1262 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1263 pill->rc_area[RCL_CLIENT][i] = -1;
1264 pill->rc_area[RCL_SERVER][i] = -1;
1267 EXPORT_SYMBOL(req_capsule_init_area);
1270 * Initialize capsule.
1272 * @area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1273 * variable-sized fields.
1275 void req_capsule_init(struct req_capsule *pill,
1276 struct ptlrpc_request *req,
1277 enum req_location location)
1279 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1281 memset(pill, 0, sizeof *pill);
1283 pill->rc_loc = location;
1284 req_capsule_init_area(pill);
1286 EXPORT_SYMBOL(req_capsule_init);
1288 void req_capsule_fini(struct req_capsule *pill)
1291 EXPORT_SYMBOL(req_capsule_fini);
1293 static int __req_format_is_sane(const struct req_format *fmt)
1296 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1297 req_formats[fmt->rf_idx] == fmt;
1300 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1301 enum req_location loc)
1303 struct ptlrpc_request *req;
1306 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1309 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1311 LASSERT(pill->rc_fmt == NULL);
1312 LASSERT(__req_format_is_sane(fmt));
1316 EXPORT_SYMBOL(req_capsule_set);
1318 int req_capsule_filled_sizes(struct req_capsule *pill,
1319 enum req_location loc)
1321 const struct req_format *fmt = pill->rc_fmt;
1324 LASSERT(fmt != NULL);
1326 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1327 if (pill->rc_area[loc][i] == -1) {
1328 pill->rc_area[loc][i] =
1329 fmt->rf_fields[loc].d[i]->rmf_size;
1330 if (pill->rc_area[loc][i] == -1) {
1331 /* skip the following fields */
1332 LASSERT(loc != RCL_SERVER);
1339 EXPORT_SYMBOL(req_capsule_filled_sizes);
1341 int req_capsule_server_pack(struct req_capsule *pill)
1343 const struct req_format *fmt;
1347 LASSERT(pill->rc_loc == RCL_SERVER);
1349 LASSERT(fmt != NULL);
1351 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1352 rc = lustre_pack_reply(pill->rc_req, count,
1353 pill->rc_area[RCL_SERVER], NULL);
1355 DEBUG_REQ(D_ERROR, pill->rc_req,
1356 "Cannot pack %d fields in format `%s': ",
1357 count, fmt->rf_name);
1361 EXPORT_SYMBOL(req_capsule_server_pack);
1363 static int __req_capsule_offset(const struct req_capsule *pill,
1364 const struct req_msg_field *field,
1365 enum req_location loc)
1369 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1370 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1371 pill->rc_fmt->rf_name,
1372 field->rmf_name, offset, loc);
1374 LASSERT(0 <= offset && offset < (sizeof(pill->rc_swabbed) << 3));
1378 static void *__req_capsule_get(struct req_capsule *pill,
1379 const struct req_msg_field *field,
1380 enum req_location loc,
1381 void (*swabber)( void *))
1383 const struct req_format *fmt;
1384 struct lustre_msg *msg;
1389 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1391 static const char *rcl_names[RCL_NR] = {
1392 [RCL_CLIENT] = "client",
1393 [RCL_SERVER] = "server"
1396 LASSERT(pill != NULL);
1397 LASSERT(pill != LP_POISON);
1399 LASSERT(fmt != NULL);
1400 LASSERT(fmt != LP_POISON);
1401 LASSERT(__req_format_is_sane(fmt));
1403 offset = __req_capsule_offset(pill, field, loc);
1405 msg = __req_msg(pill, loc);
1406 LASSERT(msg != NULL);
1408 getter = (field->rmf_flags & RMF_F_STRING) ?
1409 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1411 if (pill->rc_area[loc][offset] != -1)
1412 len = pill->rc_area[loc][offset];
1414 len = max(field->rmf_size, 0);
1415 value = getter(msg, offset, len);
1417 swabber = swabber ?: field->rmf_swabber;
1418 if (!(pill->rc_swabbed & (1 << offset)) && loc != pill->rc_loc &&
1419 swabber != NULL && value != NULL &&
1420 lustre_msg_swabbed(msg)) {
1422 pill->rc_swabbed |= (1 << offset);
1424 if (value == NULL) {
1425 DEBUG_REQ(D_ERROR, pill->rc_req,
1426 "Wrong buffer for field `%s' (%d of %d) "
1427 "in format `%s': %d vs. %d (%s)\n",
1428 field->rmf_name, offset, lustre_msg_bufcount(msg), fmt->rf_name,
1429 lustre_msg_buflen(msg, offset), len,
1436 void *req_capsule_client_get(struct req_capsule *pill,
1437 const struct req_msg_field *field)
1439 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1441 EXPORT_SYMBOL(req_capsule_client_get);
1443 void *req_capsule_client_swab_get(struct req_capsule *pill,
1444 const struct req_msg_field *field,
1445 void (*swabber)(void* ))
1447 return __req_capsule_get(pill, field, RCL_CLIENT, swabber);
1449 EXPORT_SYMBOL(req_capsule_client_swab_get);
1451 void *req_capsule_client_sized_get(struct req_capsule *pill,
1452 const struct req_msg_field *field,
1455 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1456 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1458 EXPORT_SYMBOL(req_capsule_client_sized_get);
1460 void *req_capsule_server_get(struct req_capsule *pill,
1461 const struct req_msg_field *field)
1463 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1465 EXPORT_SYMBOL(req_capsule_server_get);
1467 void *req_capsule_server_swab_get(struct req_capsule *pill,
1468 const struct req_msg_field *field,
1471 return __req_capsule_get(pill, field, RCL_SERVER, swabber);
1473 EXPORT_SYMBOL(req_capsule_server_swab_get);
1476 void *req_capsule_server_sized_get(struct req_capsule *pill,
1477 const struct req_msg_field *field,
1480 req_capsule_set_size(pill, field, RCL_SERVER, len);
1481 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1483 EXPORT_SYMBOL(req_capsule_server_sized_get);
1485 const void *req_capsule_other_get(struct req_capsule *pill,
1486 const struct req_msg_field *field)
1488 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL);
1490 EXPORT_SYMBOL(req_capsule_other_get);
1492 void req_capsule_set_size(struct req_capsule *pill,
1493 const struct req_msg_field *field,
1494 enum req_location loc, int size)
1496 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1498 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1500 EXPORT_SYMBOL(req_capsule_set_size);
1502 /* NB: this function doesn't correspond with req_capsule_set_size(), which
1503 * actually sets the size in pill.rc_area[loc][offset], but this function
1504 * returns the message buflen[offset], maybe we should use another name.
1506 int req_capsule_get_size(const struct req_capsule *pill,
1507 const struct req_msg_field *field,
1508 enum req_location loc)
1510 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1512 return lustre_msg_buflen(__req_msg(pill, loc),
1513 __req_capsule_offset(pill, field, loc));
1515 EXPORT_SYMBOL(req_capsule_get_size);
1517 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1519 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1520 pill->rc_fmt->rf_fields[loc].nr,
1521 pill->rc_area[loc]);
1524 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
1525 enum req_location loc)
1529 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
1533 for (; i < fmt->rf_fields[loc].nr; ++i)
1534 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
1535 size += size_round(fmt->rf_fields[loc].d[i]->rmf_size);
1539 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1541 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
1546 const struct req_format *old;
1548 LASSERT(pill->rc_fmt != NULL);
1549 LASSERT(__req_format_is_sane(fmt));
1553 * Sanity checking...
1555 for (i = 0; i < RCL_NR; ++i) {
1556 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
1557 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
1558 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
1561 * Last field in old format can be shorter than in new.
1563 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
1564 FMT_FIELD(old, i, j)->rmf_size);
1566 /* last field should be returned to the unswabbed state */
1567 pill->rc_swabbed &= ~(__u32)(1 << j);
1570 EXPORT_SYMBOL(req_capsule_extend);
1572 int req_capsule_has_field(const struct req_capsule *pill,
1573 const struct req_msg_field *field,
1574 enum req_location loc)
1576 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1578 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1580 EXPORT_SYMBOL(req_capsule_has_field);
1582 int req_capsule_field_present(const struct req_capsule *pill,
1583 const struct req_msg_field *field,
1584 enum req_location loc)
1588 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1589 LASSERT(req_capsule_has_field(pill, field, loc));
1591 offset = __req_capsule_offset(pill, field, loc);
1592 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
1594 EXPORT_SYMBOL(req_capsule_field_present);
1596 void req_capsule_shrink(struct req_capsule *pill,
1597 const struct req_msg_field *field,
1598 unsigned int newlen,
1599 enum req_location loc)
1601 const struct req_format *fmt;
1602 struct lustre_msg *msg;
1607 LASSERT(fmt != NULL);
1608 LASSERT(__req_format_is_sane(fmt));
1609 LASSERT(req_capsule_has_field(pill, field, loc));
1610 LASSERT(req_capsule_field_present(pill, field, loc));
1612 offset = __req_capsule_offset(pill, field, loc);
1614 msg = __req_msg(pill, loc);
1615 len = lustre_msg_buflen(msg, offset);
1616 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
1617 fmt->rf_name, field->rmf_name, len, newlen);
1619 if (loc == RCL_CLIENT)
1620 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
1623 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
1626 EXPORT_SYMBOL(req_capsule_shrink);
1628 /* __REQ_LAYOUT_USER__ */