4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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
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
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
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 * This file contains the "capsule/pill" abstraction layered above PTLRPC.
45 * Every struct ptlrpc_request contains a "pill", which points to a description
46 * of the format that the request conforms to.
49 #if !defined(__REQ_LAYOUT_USER__)
51 #define DEBUG_SUBSYSTEM S_RPC
54 #include <linux/module.h>
56 # include <liblustre.h>
59 /* LUSTRE_VERSION_CODE */
60 #include <lustre_ver.h>
62 #include <obd_support.h>
63 /* lustre_swab_mdt_body */
64 #include <lustre/lustre_idl.h>
65 /* obd2cli_tgt() (required by DEBUG_REQ()) */
68 /* __REQ_LAYOUT_USER__ */
70 /* struct ptlrpc_request, lustre_msg* */
71 #include <lustre_req_layout.h>
72 #include <lustre_acl.h>
73 #include <lustre_debug.h>
76 * RQFs (see below) refer to two struct req_msg_field arrays describing the
77 * client request and server reply, respectively.
79 /* empty set of fields... for suitable definition of emptiness. */
80 static const struct req_msg_field *empty[] = {
84 static const struct req_msg_field *mgs_target_info_only[] = {
89 static const struct req_msg_field *mgs_set_info[] = {
94 static const struct req_msg_field *mgs_config_read_client[] = {
99 static const struct req_msg_field *mgs_config_read_server[] = {
104 static const struct req_msg_field *log_cancel_client[] = {
109 static const struct req_msg_field *mdt_body_only[] = {
114 static const struct req_msg_field *mdt_body_capa[] = {
120 static const struct req_msg_field *quotactl_only[] = {
125 static const struct req_msg_field *quota_body_only[] = {
130 static const struct req_msg_field *ldlm_intent_quota_client[] = {
137 static const struct req_msg_field *ldlm_intent_quota_server[] = {
144 static const struct req_msg_field *mdt_close_client[] = {
151 static const struct req_msg_field *obd_statfs_server[] = {
156 static const struct req_msg_field *seq_query_client[] = {
162 static const struct req_msg_field *seq_query_server[] = {
167 static const struct req_msg_field *fld_query_client[] = {
173 static const struct req_msg_field *fld_query_server[] = {
178 static const struct req_msg_field *mds_getattr_name_client[] = {
185 static const struct req_msg_field *mds_reint_client[] = {
190 static const struct req_msg_field *mds_reint_create_client[] = {
197 static const struct req_msg_field *mds_reint_create_slave_client[] = {
206 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
215 static const struct req_msg_field *mds_reint_create_sym_client[] = {
224 static const struct req_msg_field *mds_reint_open_client[] = {
233 static const struct req_msg_field *mds_reint_open_server[] = {
242 static const struct req_msg_field *mds_reint_unlink_client[] = {
250 static const struct req_msg_field *mds_reint_link_client[] = {
259 static const struct req_msg_field *mds_reint_rename_client[] = {
269 static const struct req_msg_field *mds_last_unlink_server[] = {
278 static const struct req_msg_field *mds_reint_setattr_client[] = {
288 static const struct req_msg_field *mds_reint_setxattr_client[] = {
296 static const struct req_msg_field *obd_connect_client[] = {
304 static const struct req_msg_field *obd_connect_server[] = {
309 static const struct req_msg_field *obd_set_info_client[] = {
315 static const struct req_msg_field *ost_grant_shrink_client[] = {
321 static const struct req_msg_field *mds_getinfo_client[] = {
327 static const struct req_msg_field *mds_getinfo_server[] = {
332 static const struct req_msg_field *ldlm_enqueue_client[] = {
337 static const struct req_msg_field *ldlm_enqueue_server[] = {
342 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
348 static const struct req_msg_field *ldlm_cp_callback_client[] = {
354 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
360 static const struct req_msg_field *ldlm_gl_callback_server[] = {
365 static const struct req_msg_field *ldlm_intent_basic_client[] = {
371 static const struct req_msg_field *ldlm_intent_client[] = {
378 static const struct req_msg_field *ldlm_intent_server[] = {
386 static const struct req_msg_field *ldlm_intent_layout_client[] = {
391 &RMF_EADATA /* for new layout to be set up */
393 static const struct req_msg_field *ldlm_intent_open_server[] = {
403 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
407 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
412 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
421 static const struct req_msg_field *ldlm_intent_create_client[] = {
425 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
431 static const struct req_msg_field *ldlm_intent_open_client[] = {
435 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
442 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
446 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
451 static const struct req_msg_field *mds_getxattr_client[] = {
459 static const struct req_msg_field *mds_getxattr_server[] = {
465 static const struct req_msg_field *mds_getattr_server[] = {
474 static const struct req_msg_field *mds_setattr_server[] = {
483 static const struct req_msg_field *llog_origin_handle_create_client[] = {
489 static const struct req_msg_field *llogd_body_only[] = {
494 static const struct req_msg_field *llog_log_hdr_only[] = {
499 static const struct req_msg_field *llogd_conn_body_only[] = {
504 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
510 static const struct req_msg_field *obd_idx_read_client[] = {
515 static const struct req_msg_field *obd_idx_read_server[] = {
520 static const struct req_msg_field *ost_body_only[] = {
525 static const struct req_msg_field *ost_body_capa[] = {
531 static const struct req_msg_field *ost_destroy_client[] = {
539 static const struct req_msg_field *ost_brw_client[] = {
547 static const struct req_msg_field *ost_brw_read_server[] = {
552 static const struct req_msg_field *ost_brw_write_server[] = {
558 static const struct req_msg_field *ost_get_info_generic_server[] = {
563 static const struct req_msg_field *ost_get_info_generic_client[] = {
568 static const struct req_msg_field *ost_get_last_id_server[] = {
573 static const struct req_msg_field *ost_get_last_fid_server[] = {
578 static const struct req_msg_field *ost_get_fiemap_client[] = {
584 static const struct req_msg_field *ost_get_fiemap_server[] = {
589 static const struct req_msg_field *mdt_hsm_progress[] = {
591 &RMF_MDS_HSM_PROGRESS,
594 static const struct req_msg_field *mdt_hsm_ct_register[] = {
596 &RMF_MDS_HSM_ARCHIVE,
599 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
604 static const struct req_msg_field *mdt_hsm_state_set[] = {
611 static struct req_format *req_formats[] = {
618 &RQF_MGS_CONFIG_READ,
627 &RQF_MDS_GETATTR_NAME,
636 &RQF_MDS_DONE_WRITING,
638 &RQF_MDS_REINT_CREATE,
639 &RQF_MDS_REINT_CREATE_RMT_ACL,
640 &RQF_MDS_REINT_CREATE_SLAVE,
641 &RQF_MDS_REINT_CREATE_SYM,
643 &RQF_MDS_REINT_UNLINK,
645 &RQF_MDS_REINT_RENAME,
646 &RQF_MDS_REINT_SETATTR,
647 &RQF_MDS_REINT_SETXATTR,
650 &RQF_MDS_HSM_PROGRESS,
651 &RQF_MDS_HSM_CT_REGISTER,
652 &RQF_MDS_HSM_CT_UNREGISTER,
653 &RQF_MDS_HSM_STATE_GET,
654 &RQF_MDS_HSM_STATE_SET,
669 &RQF_OST_SET_GRANT_INFO,
670 &RQF_OST_GET_INFO_GENERIC,
671 &RQF_OST_GET_INFO_LAST_ID,
672 &RQF_OST_GET_INFO_LAST_FID,
673 &RQF_OST_SET_INFO_LAST_FID,
674 &RQF_OST_GET_INFO_FIEMAP,
676 &RQF_LDLM_ENQUEUE_LVB,
680 &RQF_LDLM_CP_CALLBACK,
681 &RQF_LDLM_BL_CALLBACK,
682 &RQF_LDLM_GL_CALLBACK,
683 &RQF_LDLM_GL_DESC_CALLBACK,
685 &RQF_LDLM_INTENT_BASIC,
686 &RQF_LDLM_INTENT_LAYOUT,
687 &RQF_LDLM_INTENT_GETATTR,
688 &RQF_LDLM_INTENT_OPEN,
689 &RQF_LDLM_INTENT_CREATE,
690 &RQF_LDLM_INTENT_UNLINK,
691 &RQF_LDLM_INTENT_QUOTA,
694 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
695 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
696 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
697 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
698 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
699 &RQF_LLOG_ORIGIN_CONNECT
702 struct req_msg_field {
703 const __u32 rmf_flags;
704 const char *rmf_name;
706 * Field length. (-1) means "variable length". If the
707 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
708 * but the actual size must be a whole multiple of \a rmf_size.
711 void (*rmf_swabber)(void *);
712 void (*rmf_dumper)(void *);
713 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
718 * The field is a string, must be NUL-terminated.
720 RMF_F_STRING = 1 << 0,
722 * The field's buffer size need not match the declared \a rmf_size.
724 RMF_F_NO_SIZE_CHECK = 1 << 1,
726 * The field's buffer size must be a whole multiple of the declared \a
727 * rmf_size and the \a rmf_swabber function must work on the declared \a
728 * rmf_size worth of bytes.
730 RMF_F_STRUCT_ARRAY = 1 << 2
738 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
739 .rmf_name = (name), \
740 .rmf_flags = (flags), \
741 .rmf_size = (size), \
742 .rmf_swabber = (void (*)(void*))(swabber), \
743 .rmf_dumper = (void (*)(void*))(dumper) \
746 struct req_msg_field RMF_GENERIC_DATA =
747 DEFINE_MSGF("generic_data", 0,
749 EXPORT_SYMBOL(RMF_GENERIC_DATA);
751 struct req_msg_field RMF_MGS_TARGET_INFO =
752 DEFINE_MSGF("mgs_target_info", 0,
753 sizeof(struct mgs_target_info),
754 lustre_swab_mgs_target_info, NULL);
755 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
757 struct req_msg_field RMF_MGS_SEND_PARAM =
758 DEFINE_MSGF("mgs_send_param", 0,
759 sizeof(struct mgs_send_param),
761 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
763 struct req_msg_field RMF_MGS_CONFIG_BODY =
764 DEFINE_MSGF("mgs_config_read request", 0,
765 sizeof(struct mgs_config_body),
766 lustre_swab_mgs_config_body, NULL);
767 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
769 struct req_msg_field RMF_MGS_CONFIG_RES =
770 DEFINE_MSGF("mgs_config_read reply ", 0,
771 sizeof(struct mgs_config_res),
772 lustre_swab_mgs_config_res, NULL);
773 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
775 struct req_msg_field RMF_U32 =
776 DEFINE_MSGF("generic u32", 0,
777 sizeof(__u32), lustre_swab_generic_32s, NULL);
778 EXPORT_SYMBOL(RMF_U32);
780 struct req_msg_field RMF_SETINFO_VAL =
781 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
782 EXPORT_SYMBOL(RMF_SETINFO_VAL);
784 struct req_msg_field RMF_GETINFO_KEY =
785 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
786 EXPORT_SYMBOL(RMF_GETINFO_KEY);
788 struct req_msg_field RMF_GETINFO_VALLEN =
789 DEFINE_MSGF("getinfo_vallen", 0,
790 sizeof(__u32), lustre_swab_generic_32s, NULL);
791 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
793 struct req_msg_field RMF_GETINFO_VAL =
794 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
795 EXPORT_SYMBOL(RMF_GETINFO_VAL);
797 struct req_msg_field RMF_SEQ_OPC =
798 DEFINE_MSGF("seq_query_opc", 0,
799 sizeof(__u32), lustre_swab_generic_32s, NULL);
800 EXPORT_SYMBOL(RMF_SEQ_OPC);
802 struct req_msg_field RMF_SEQ_RANGE =
803 DEFINE_MSGF("seq_query_range", 0,
804 sizeof(struct lu_seq_range),
805 lustre_swab_lu_seq_range, NULL);
806 EXPORT_SYMBOL(RMF_SEQ_RANGE);
808 struct req_msg_field RMF_FLD_OPC =
809 DEFINE_MSGF("fld_query_opc", 0,
810 sizeof(__u32), lustre_swab_generic_32s, NULL);
811 EXPORT_SYMBOL(RMF_FLD_OPC);
813 struct req_msg_field RMF_FLD_MDFLD =
814 DEFINE_MSGF("fld_query_mdfld", 0,
815 sizeof(struct lu_seq_range),
816 lustre_swab_lu_seq_range, NULL);
817 EXPORT_SYMBOL(RMF_FLD_MDFLD);
819 struct req_msg_field RMF_MDT_BODY =
820 DEFINE_MSGF("mdt_body", 0,
821 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
822 EXPORT_SYMBOL(RMF_MDT_BODY);
824 struct req_msg_field RMF_OBD_QUOTACTL =
825 DEFINE_MSGF("obd_quotactl", 0,
826 sizeof(struct obd_quotactl),
827 lustre_swab_obd_quotactl, NULL);
828 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
830 struct req_msg_field RMF_QUOTA_BODY =
831 DEFINE_MSGF("quota_body", 0,
832 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
833 EXPORT_SYMBOL(RMF_QUOTA_BODY);
835 struct req_msg_field RMF_MDT_EPOCH =
836 DEFINE_MSGF("mdt_ioepoch", 0,
837 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
838 EXPORT_SYMBOL(RMF_MDT_EPOCH);
840 struct req_msg_field RMF_PTLRPC_BODY =
841 DEFINE_MSGF("ptlrpc_body", 0,
842 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
843 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
845 struct req_msg_field RMF_OBD_STATFS =
846 DEFINE_MSGF("obd_statfs", 0,
847 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
848 EXPORT_SYMBOL(RMF_OBD_STATFS);
850 struct req_msg_field RMF_SETINFO_KEY =
851 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
852 EXPORT_SYMBOL(RMF_SETINFO_KEY);
854 struct req_msg_field RMF_NAME =
855 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
856 EXPORT_SYMBOL(RMF_NAME);
858 struct req_msg_field RMF_SYMTGT =
859 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
860 EXPORT_SYMBOL(RMF_SYMTGT);
862 struct req_msg_field RMF_TGTUUID =
863 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
865 EXPORT_SYMBOL(RMF_TGTUUID);
867 struct req_msg_field RMF_CLUUID =
868 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
870 EXPORT_SYMBOL(RMF_CLUUID);
872 struct req_msg_field RMF_STRING =
873 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
874 EXPORT_SYMBOL(RMF_STRING);
876 struct req_msg_field RMF_LLOGD_BODY =
877 DEFINE_MSGF("llogd_body", 0,
878 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
879 EXPORT_SYMBOL(RMF_LLOGD_BODY);
881 struct req_msg_field RMF_LLOG_LOG_HDR =
882 DEFINE_MSGF("llog_log_hdr", 0,
883 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
884 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
886 struct req_msg_field RMF_LLOGD_CONN_BODY =
887 DEFINE_MSGF("llogd_conn_body", 0,
888 sizeof(struct llogd_conn_body),
889 lustre_swab_llogd_conn_body, NULL);
890 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
893 * connection handle received in MDS_CONNECT request.
895 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
896 * that the client does not interpret at all.
898 struct req_msg_field RMF_CONN =
899 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
900 EXPORT_SYMBOL(RMF_CONN);
902 struct req_msg_field RMF_CONNECT_DATA =
904 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
905 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
906 sizeof(struct obd_connect_data),
908 /* For interoperability with 1.8 and 2.0 clients/servers.
909 * The RPC verification code allows larger RPC buffers, but not
910 * smaller buffers. Until we no longer need to keep compatibility
911 * with older servers/clients we can only check that the buffer
912 * size is at least as large as obd_connect_data_v1. That is not
913 * not in itself harmful, since the chance of just corrupting this
914 * field is low. See JIRA LU-16 for details. */
915 sizeof(struct obd_connect_data_v1),
917 lustre_swab_connect, NULL);
918 EXPORT_SYMBOL(RMF_CONNECT_DATA);
920 struct req_msg_field RMF_DLM_REQ =
921 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
922 sizeof(struct ldlm_request),
923 lustre_swab_ldlm_request, NULL);
924 EXPORT_SYMBOL(RMF_DLM_REQ);
926 struct req_msg_field RMF_DLM_REP =
927 DEFINE_MSGF("dlm_rep", 0,
928 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
929 EXPORT_SYMBOL(RMF_DLM_REP);
931 struct req_msg_field RMF_LDLM_INTENT =
932 DEFINE_MSGF("ldlm_intent", 0,
933 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
934 EXPORT_SYMBOL(RMF_LDLM_INTENT);
936 struct req_msg_field RMF_DLM_LVB =
937 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
938 EXPORT_SYMBOL(RMF_DLM_LVB);
940 struct req_msg_field RMF_DLM_GL_DESC =
941 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
942 lustre_swab_gl_desc, NULL);
943 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
945 struct req_msg_field RMF_MDT_MD =
946 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
947 EXPORT_SYMBOL(RMF_MDT_MD);
949 struct req_msg_field RMF_REC_REINT =
950 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
951 lustre_swab_mdt_rec_reint, NULL);
952 EXPORT_SYMBOL(RMF_REC_REINT);
954 /* FIXME: this length should be defined as a macro */
955 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
957 EXPORT_SYMBOL(RMF_EADATA);
959 struct req_msg_field RMF_ACL =
960 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
961 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
962 EXPORT_SYMBOL(RMF_ACL);
964 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
965 struct req_msg_field RMF_LOGCOOKIES =
966 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
967 sizeof(struct llog_cookie), NULL, NULL);
968 EXPORT_SYMBOL(RMF_LOGCOOKIES);
970 struct req_msg_field RMF_CAPA1 =
971 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
972 lustre_swab_lustre_capa, NULL);
973 EXPORT_SYMBOL(RMF_CAPA1);
975 struct req_msg_field RMF_CAPA2 =
976 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
977 lustre_swab_lustre_capa, NULL);
978 EXPORT_SYMBOL(RMF_CAPA2);
980 struct req_msg_field RMF_LAYOUT_INTENT =
981 DEFINE_MSGF("layout_intent", 0,
982 sizeof(struct layout_intent), lustre_swab_layout_intent,
984 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
989 struct req_msg_field RMF_OST_BODY =
990 DEFINE_MSGF("ost_body", 0,
991 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
992 EXPORT_SYMBOL(RMF_OST_BODY);
994 struct req_msg_field RMF_OBD_IOOBJ =
995 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
996 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
997 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
999 struct req_msg_field RMF_NIOBUF_REMOTE =
1000 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1001 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1003 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1005 struct req_msg_field RMF_RCS =
1006 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1007 lustre_swab_generic_32s, dump_rcs);
1008 EXPORT_SYMBOL(RMF_RCS);
1010 struct req_msg_field RMF_OBD_ID =
1011 DEFINE_MSGF("obd_id", 0,
1012 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
1013 EXPORT_SYMBOL(RMF_OBD_ID);
1015 struct req_msg_field RMF_FID =
1016 DEFINE_MSGF("fid", 0,
1017 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1018 EXPORT_SYMBOL(RMF_FID);
1020 struct req_msg_field RMF_FIEMAP_KEY =
1021 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1022 lustre_swab_fiemap, NULL);
1023 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1025 struct req_msg_field RMF_FIEMAP_VAL =
1026 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1027 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1029 struct req_msg_field RMF_IDX_INFO =
1030 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1031 lustre_swab_idx_info, NULL);
1032 EXPORT_SYMBOL(RMF_IDX_INFO);
1033 struct req_msg_field RMF_HSM_USER_STATE =
1034 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1035 lustre_swab_hsm_user_state, NULL);
1036 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1038 struct req_msg_field RMF_HSM_STATE_SET =
1039 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1040 lustre_swab_hsm_state_set, NULL);
1041 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1043 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1044 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1045 lustre_swab_hsm_progress_kernel, NULL);
1046 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1048 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1049 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1050 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1052 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1054 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1055 DEFINE_MSGF("hsm_archive", 0,
1056 sizeof(__u32), lustre_swab_generic_32s, NULL);
1057 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1064 const char *rf_name;
1068 const struct req_msg_field **d;
1069 } rf_fields[RCL_NR];
1072 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1086 #define DEFINE_REQ_FMT0(name, client, server) \
1087 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1089 struct req_format RQF_OBD_PING =
1090 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1091 EXPORT_SYMBOL(RQF_OBD_PING);
1093 struct req_format RQF_OBD_SET_INFO =
1094 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1095 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1097 /* Read index file through the network */
1098 struct req_format RQF_OBD_IDX_READ =
1099 DEFINE_REQ_FMT0("OBD_IDX_READ",
1100 obd_idx_read_client, obd_idx_read_server);
1101 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1103 struct req_format RQF_SEC_CTX =
1104 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1105 EXPORT_SYMBOL(RQF_SEC_CTX);
1107 struct req_format RQF_MGS_TARGET_REG =
1108 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1109 mgs_target_info_only);
1110 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1112 struct req_format RQF_MGS_SET_INFO =
1113 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1115 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1117 struct req_format RQF_MGS_CONFIG_READ =
1118 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1119 mgs_config_read_server);
1120 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1122 struct req_format RQF_SEQ_QUERY =
1123 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1124 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1126 struct req_format RQF_FLD_QUERY =
1127 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1128 EXPORT_SYMBOL(RQF_FLD_QUERY);
1130 struct req_format RQF_LOG_CANCEL =
1131 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1132 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1134 struct req_format RQF_MDS_QUOTACHECK =
1135 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1136 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1138 struct req_format RQF_OST_QUOTACHECK =
1139 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1140 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1142 struct req_format RQF_MDS_QUOTACTL =
1143 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1144 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1146 struct req_format RQF_OST_QUOTACTL =
1147 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1148 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1150 struct req_format RQF_QC_CALLBACK =
1151 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1152 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1154 struct req_format RQF_QUOTA_DQACQ =
1155 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1156 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1158 struct req_format RQF_LDLM_INTENT_QUOTA =
1159 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1160 ldlm_intent_quota_client,
1161 ldlm_intent_quota_server);
1162 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1164 struct req_format RQF_MDS_GETSTATUS =
1165 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1166 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1168 struct req_format RQF_MDS_STATFS =
1169 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1170 EXPORT_SYMBOL(RQF_MDS_STATFS);
1172 struct req_format RQF_MDS_SYNC =
1173 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1174 EXPORT_SYMBOL(RQF_MDS_SYNC);
1176 struct req_format RQF_MDS_GETATTR =
1177 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1178 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1180 struct req_format RQF_MDS_GETXATTR =
1181 DEFINE_REQ_FMT0("MDS_GETXATTR",
1182 mds_getxattr_client, mds_getxattr_server);
1183 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1185 struct req_format RQF_MDS_GETATTR_NAME =
1186 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1187 mds_getattr_name_client, mds_getattr_server);
1188 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1190 struct req_format RQF_MDS_REINT =
1191 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1192 EXPORT_SYMBOL(RQF_MDS_REINT);
1194 struct req_format RQF_MDS_REINT_CREATE =
1195 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1196 mds_reint_create_client, mdt_body_capa);
1197 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1199 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1200 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1201 mds_reint_create_rmt_acl_client, mdt_body_capa);
1202 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1204 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1205 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1206 mds_reint_create_slave_client, mdt_body_capa);
1207 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1209 struct req_format RQF_MDS_REINT_CREATE_SYM =
1210 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1211 mds_reint_create_sym_client, mdt_body_capa);
1212 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1214 struct req_format RQF_MDS_REINT_OPEN =
1215 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1216 mds_reint_open_client, mds_reint_open_server);
1217 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1219 struct req_format RQF_MDS_REINT_UNLINK =
1220 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1221 mds_last_unlink_server);
1222 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1224 struct req_format RQF_MDS_REINT_LINK =
1225 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1226 mds_reint_link_client, mdt_body_only);
1227 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1229 struct req_format RQF_MDS_REINT_RENAME =
1230 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1231 mds_last_unlink_server);
1232 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1234 struct req_format RQF_MDS_REINT_SETATTR =
1235 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1236 mds_reint_setattr_client, mds_setattr_server);
1237 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1239 struct req_format RQF_MDS_REINT_SETXATTR =
1240 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1241 mds_reint_setxattr_client, mdt_body_only);
1242 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1244 struct req_format RQF_MDS_CONNECT =
1245 DEFINE_REQ_FMT0("MDS_CONNECT",
1246 obd_connect_client, obd_connect_server);
1247 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1249 struct req_format RQF_MDS_DISCONNECT =
1250 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1251 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1253 struct req_format RQF_MDS_GET_INFO =
1254 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1255 mds_getinfo_server);
1256 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1258 struct req_format RQF_LDLM_ENQUEUE =
1259 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1260 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1261 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1263 struct req_format RQF_LDLM_ENQUEUE_LVB =
1264 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1265 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1266 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1268 struct req_format RQF_LDLM_CONVERT =
1269 DEFINE_REQ_FMT0("LDLM_CONVERT",
1270 ldlm_enqueue_client, ldlm_enqueue_server);
1271 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1273 struct req_format RQF_LDLM_CANCEL =
1274 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1275 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1277 struct req_format RQF_LDLM_CALLBACK =
1278 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1279 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1281 struct req_format RQF_LDLM_CP_CALLBACK =
1282 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1283 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1285 struct req_format RQF_LDLM_BL_CALLBACK =
1286 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1287 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1289 struct req_format RQF_LDLM_GL_CALLBACK =
1290 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1291 ldlm_gl_callback_server);
1292 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1294 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1295 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1296 ldlm_gl_callback_server);
1297 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1299 struct req_format RQF_LDLM_INTENT_BASIC =
1300 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1301 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1302 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1304 struct req_format RQF_LDLM_INTENT =
1305 DEFINE_REQ_FMT0("LDLM_INTENT",
1306 ldlm_intent_client, ldlm_intent_server);
1307 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1309 struct req_format RQF_LDLM_INTENT_LAYOUT =
1310 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1311 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1312 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1314 struct req_format RQF_LDLM_INTENT_GETATTR =
1315 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1316 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1317 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1319 struct req_format RQF_LDLM_INTENT_OPEN =
1320 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1321 ldlm_intent_open_client, ldlm_intent_open_server);
1322 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1324 struct req_format RQF_LDLM_INTENT_CREATE =
1325 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1326 ldlm_intent_create_client, ldlm_intent_getattr_server);
1327 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1329 struct req_format RQF_LDLM_INTENT_UNLINK =
1330 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1331 ldlm_intent_unlink_client, ldlm_intent_server);
1332 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1334 struct req_format RQF_MDS_CLOSE =
1335 DEFINE_REQ_FMT0("MDS_CLOSE",
1336 mdt_close_client, mds_last_unlink_server);
1337 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1339 struct req_format RQF_MDS_PIN =
1340 DEFINE_REQ_FMT0("MDS_PIN",
1341 mdt_body_capa, mdt_body_only);
1342 EXPORT_SYMBOL(RQF_MDS_PIN);
1344 struct req_format RQF_MDS_UNPIN =
1345 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1346 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1348 struct req_format RQF_MDS_DONE_WRITING =
1349 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1350 mdt_close_client, mdt_body_only);
1351 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1353 struct req_format RQF_MDS_READPAGE =
1354 DEFINE_REQ_FMT0("MDS_READPAGE",
1355 mdt_body_capa, mdt_body_only);
1356 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1358 struct req_format RQF_MDS_HSM_PROGRESS =
1359 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1360 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1362 struct req_format RQF_MDS_HSM_CT_REGISTER =
1363 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1364 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1366 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1367 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", empty, empty);
1368 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1370 struct req_format RQF_MDS_HSM_STATE_GET =
1371 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1372 mdt_body_capa, mdt_hsm_state_get_server);
1373 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1375 struct req_format RQF_MDS_HSM_STATE_SET =
1376 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1377 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1379 /* This is for split */
1380 struct req_format RQF_MDS_WRITEPAGE =
1381 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1382 mdt_body_capa, mdt_body_only);
1383 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1385 struct req_format RQF_MDS_IS_SUBDIR =
1386 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1387 mdt_body_only, mdt_body_only);
1388 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1390 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1391 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1392 llog_origin_handle_create_client, llogd_body_only);
1393 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1395 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1396 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1397 llogd_body_only, llogd_body_only);
1398 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1400 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1401 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1402 llogd_body_only, llog_origin_handle_next_block_server);
1403 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1405 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1406 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1407 llogd_body_only, llog_origin_handle_next_block_server);
1408 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1410 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1411 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1412 llogd_body_only, llog_log_hdr_only);
1413 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1415 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1416 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1417 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1419 struct req_format RQF_OST_CONNECT =
1420 DEFINE_REQ_FMT0("OST_CONNECT",
1421 obd_connect_client, obd_connect_server);
1422 EXPORT_SYMBOL(RQF_OST_CONNECT);
1424 struct req_format RQF_OST_DISCONNECT =
1425 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1426 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1428 struct req_format RQF_OST_GETATTR =
1429 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1430 EXPORT_SYMBOL(RQF_OST_GETATTR);
1432 struct req_format RQF_OST_SETATTR =
1433 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1434 EXPORT_SYMBOL(RQF_OST_SETATTR);
1436 struct req_format RQF_OST_CREATE =
1437 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1438 EXPORT_SYMBOL(RQF_OST_CREATE);
1440 struct req_format RQF_OST_PUNCH =
1441 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1442 EXPORT_SYMBOL(RQF_OST_PUNCH);
1444 struct req_format RQF_OST_SYNC =
1445 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1446 EXPORT_SYMBOL(RQF_OST_SYNC);
1448 struct req_format RQF_OST_DESTROY =
1449 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1450 EXPORT_SYMBOL(RQF_OST_DESTROY);
1452 struct req_format RQF_OST_BRW_READ =
1453 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1454 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1456 struct req_format RQF_OST_BRW_WRITE =
1457 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1458 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1460 struct req_format RQF_OST_STATFS =
1461 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1462 EXPORT_SYMBOL(RQF_OST_STATFS);
1464 struct req_format RQF_OST_SET_GRANT_INFO =
1465 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1467 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1469 struct req_format RQF_OST_GET_INFO_GENERIC =
1470 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1471 ost_get_info_generic_server);
1472 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1474 struct req_format RQF_OST_GET_INFO_LAST_ID =
1475 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1476 ost_get_last_id_server);
1477 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1479 struct req_format RQF_OST_GET_INFO_LAST_FID =
1480 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1481 ost_get_last_fid_server);
1482 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1484 struct req_format RQF_OST_SET_INFO_LAST_FID =
1485 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1487 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1489 struct req_format RQF_OST_GET_INFO_FIEMAP =
1490 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1491 ost_get_fiemap_server);
1492 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1494 #if !defined(__REQ_LAYOUT_USER__)
1496 /* Convenience macro */
1497 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1500 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1501 * field of RQFs and the \a rmf_offset field of RMFs.
1503 int req_layout_init(void)
1508 struct req_format *rf = NULL;
1510 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1511 rf = req_formats[i];
1513 for (j = 0; j < RCL_NR; ++j) {
1514 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1515 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1516 struct req_msg_field *field;
1518 field = (typeof(field))rf->rf_fields[j].d[k];
1519 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1520 || field->rmf_size > 0);
1521 LASSERT(field->rmf_offset[i][j] == 0);
1523 * k + 1 to detect unused format/field
1526 field->rmf_offset[i][j] = k + 1;
1532 EXPORT_SYMBOL(req_layout_init);
1534 void req_layout_fini(void)
1537 EXPORT_SYMBOL(req_layout_fini);
1540 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1542 * Actual/expected field sizes are set elsewhere in functions in this file:
1543 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1544 * req_capsule_msg_size(). The \a rc_area information is used by.
1545 * ptlrpc_request_set_replen().
1547 void req_capsule_init_area(struct req_capsule *pill)
1551 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1552 pill->rc_area[RCL_CLIENT][i] = -1;
1553 pill->rc_area[RCL_SERVER][i] = -1;
1556 EXPORT_SYMBOL(req_capsule_init_area);
1559 * Initialize a pill.
1561 * The \a location indicates whether the caller is executing on the client side
1562 * (RCL_CLIENT) or server side (RCL_SERVER)..
1564 void req_capsule_init(struct req_capsule *pill,
1565 struct ptlrpc_request *req,
1566 enum req_location location)
1568 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1571 * Today all capsules are embedded in ptlrpc_request structs,
1572 * but just in case that ever isn't the case, we don't reach
1573 * into req unless req != NULL and pill is the one embedded in
1576 * The req->rq_pill_init flag makes it safe to initialize a pill
1577 * twice, which might happen in the OST paths as a result of the
1578 * high-priority RPC queue getting peeked at before ost_handle()
1579 * handles an OST RPC.
1581 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1584 memset(pill, 0, sizeof *pill);
1586 pill->rc_loc = location;
1587 req_capsule_init_area(pill);
1589 if (req != NULL && pill == &req->rq_pill)
1590 req->rq_pill_init = 1;
1592 EXPORT_SYMBOL(req_capsule_init);
1594 void req_capsule_fini(struct req_capsule *pill)
1597 EXPORT_SYMBOL(req_capsule_fini);
1599 static int __req_format_is_sane(const struct req_format *fmt)
1602 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1603 req_formats[fmt->rf_idx] == fmt;
1606 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1607 enum req_location loc)
1609 struct ptlrpc_request *req;
1612 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1616 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1617 * (see req_capsule_extend()).
1619 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1621 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1622 LASSERT(__req_format_is_sane(fmt));
1626 EXPORT_SYMBOL(req_capsule_set);
1629 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1632 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1633 * variable-sized fields. The field sizes come from the declared \a rmf_size
1634 * field of a \a pill's \a rc_fmt's RMF's.
1636 int req_capsule_filled_sizes(struct req_capsule *pill,
1637 enum req_location loc)
1639 const struct req_format *fmt = pill->rc_fmt;
1642 LASSERT(fmt != NULL);
1644 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1645 if (pill->rc_area[loc][i] == -1) {
1646 pill->rc_area[loc][i] =
1647 fmt->rf_fields[loc].d[i]->rmf_size;
1648 if (pill->rc_area[loc][i] == -1) {
1650 * Skip the following fields.
1652 * If this LASSERT() trips then you're missing a
1653 * call to req_capsule_set_size().
1655 LASSERT(loc != RCL_SERVER);
1662 EXPORT_SYMBOL(req_capsule_filled_sizes);
1665 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1667 * This function uses the \a pill's \a rc_area as filled in by
1668 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1671 int req_capsule_server_pack(struct req_capsule *pill)
1673 const struct req_format *fmt;
1677 LASSERT(pill->rc_loc == RCL_SERVER);
1679 LASSERT(fmt != NULL);
1681 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1682 rc = lustre_pack_reply(pill->rc_req, count,
1683 pill->rc_area[RCL_SERVER], NULL);
1685 DEBUG_REQ(D_ERROR, pill->rc_req,
1686 "Cannot pack %d fields in format `%s': ",
1687 count, fmt->rf_name);
1691 EXPORT_SYMBOL(req_capsule_server_pack);
1694 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1695 * corresponding to the given RMF (\a field).
1697 static int __req_capsule_offset(const struct req_capsule *pill,
1698 const struct req_msg_field *field,
1699 enum req_location loc)
1703 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1704 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1705 pill->rc_fmt->rf_name,
1706 field->rmf_name, offset, loc);
1709 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1714 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1719 swabber_dumper_helper(struct req_capsule *pill,
1720 const struct req_msg_field *field,
1721 enum req_location loc,
1723 void *value, int len, int dump, void (*swabber)( void *))
1729 int inout = loc == RCL_CLIENT;
1731 swabber = swabber ?: field->rmf_swabber;
1733 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1734 swabber != NULL && value != NULL)
1739 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1740 if (dump && field->rmf_dumper) {
1741 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1742 do_swab ? "unswabbed " : "", field->rmf_name);
1743 field->rmf_dumper(value);
1748 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1750 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1751 "follows\n", field->rmf_name);
1752 field->rmf_dumper(value);
1759 * We're swabbing an array; swabber() swabs a single array element, so
1760 * swab every element.
1762 LASSERT((len % field->rmf_size) == 0);
1763 for (p = value, i = 0, n = len / field->rmf_size;
1765 i++, p += field->rmf_size) {
1766 if (dump && field->rmf_dumper) {
1767 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1768 "element %d follows\n",
1769 do_swab ? "unswabbed " : "", field->rmf_name, i);
1770 field->rmf_dumper(p);
1775 if (dump && field->rmf_dumper) {
1776 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1777 "element %d follows\n", field->rmf_name, i);
1778 field->rmf_dumper(value);
1782 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1786 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1787 * corresponding to the given RMF (\a field).
1789 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1790 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1791 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1792 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1793 * element of the array swabbed.
1795 static void *__req_capsule_get(struct req_capsule *pill,
1796 const struct req_msg_field *field,
1797 enum req_location loc,
1798 void (*swabber)( void *),
1801 const struct req_format *fmt;
1802 struct lustre_msg *msg;
1807 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1809 static const char *rcl_names[RCL_NR] = {
1810 [RCL_CLIENT] = "client",
1811 [RCL_SERVER] = "server"
1814 LASSERT(pill != NULL);
1815 LASSERT(pill != LP_POISON);
1817 LASSERT(fmt != NULL);
1818 LASSERT(fmt != LP_POISON);
1819 LASSERT(__req_format_is_sane(fmt));
1821 offset = __req_capsule_offset(pill, field, loc);
1823 msg = __req_msg(pill, loc);
1824 LASSERT(msg != NULL);
1826 getter = (field->rmf_flags & RMF_F_STRING) ?
1827 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1829 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1831 * We've already asserted that field->rmf_size > 0 in
1832 * req_layout_init().
1834 len = lustre_msg_buflen(msg, offset);
1835 if ((len % field->rmf_size) != 0) {
1836 CERROR("%s: array field size mismatch "
1837 "%d modulo %d != 0 (%d)\n",
1838 field->rmf_name, len, field->rmf_size, loc);
1841 } else if (pill->rc_area[loc][offset] != -1) {
1842 len = pill->rc_area[loc][offset];
1844 len = max(field->rmf_size, 0);
1846 value = getter(msg, offset, len);
1848 if (value == NULL) {
1849 DEBUG_REQ(D_ERROR, pill->rc_req,
1850 "Wrong buffer for field `%s' (%d of %d) "
1851 "in format `%s': %d vs. %d (%s)\n",
1852 field->rmf_name, offset, lustre_msg_bufcount(msg),
1853 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1856 swabber_dumper_helper(pill, field, loc, offset, value, len,
1864 * Dump a request and/or reply
1866 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
1868 const struct req_format *fmt;
1869 const struct req_msg_field *field;
1875 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
1876 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1877 field = FMT_FIELD(fmt, loc, i);
1878 if (field->rmf_dumper == NULL) {
1880 * FIXME Add a default hex dumper for fields that don't
1881 * have a specific dumper
1883 len = req_capsule_get_size(pill, field, loc);
1884 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
1885 "field size is %d\n", field->rmf_name, len);
1887 /* It's the dumping side-effect that we're interested in */
1888 (void) __req_capsule_get(pill, field, loc, NULL, 1);
1891 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
1897 void req_capsule_client_dump(struct req_capsule *pill)
1899 __req_capsule_dump(pill, RCL_CLIENT);
1901 EXPORT_SYMBOL(req_capsule_client_dump);
1906 void req_capsule_server_dump(struct req_capsule *pill)
1908 __req_capsule_dump(pill, RCL_SERVER);
1910 EXPORT_SYMBOL(req_capsule_server_dump);
1913 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1914 * buffer corresponding to the given RMF (\a field) of a \a pill.
1916 void *req_capsule_client_get(struct req_capsule *pill,
1917 const struct req_msg_field *field)
1919 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1921 EXPORT_SYMBOL(req_capsule_client_get);
1924 * Same as req_capsule_client_get(), but with a \a swabber argument.
1926 * Currently unused; will be removed when req_capsule_server_swab_get() is
1929 void *req_capsule_client_swab_get(struct req_capsule *pill,
1930 const struct req_msg_field *field,
1933 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1935 EXPORT_SYMBOL(req_capsule_client_swab_get);
1938 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
1940 * First the \a pill's request \a field's size is set (\a rc_area) using
1941 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1944 void *req_capsule_client_sized_get(struct req_capsule *pill,
1945 const struct req_msg_field *field,
1948 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1949 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1951 EXPORT_SYMBOL(req_capsule_client_sized_get);
1954 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
1955 * buffer corresponding to the given RMF (\a field) of a \a pill.
1957 void *req_capsule_server_get(struct req_capsule *pill,
1958 const struct req_msg_field *field)
1960 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1962 EXPORT_SYMBOL(req_capsule_server_get);
1965 * Same as req_capsule_server_get(), but with a \a swabber argument.
1967 * Ideally all swabbing should be done pursuant to RMF definitions, with no
1968 * swabbing done outside this capsule abstraction.
1970 void *req_capsule_server_swab_get(struct req_capsule *pill,
1971 const struct req_msg_field *field,
1974 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1976 EXPORT_SYMBOL(req_capsule_server_swab_get);
1979 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
1981 * First the \a pill's request \a field's size is set (\a rc_area) using
1982 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1985 void *req_capsule_server_sized_get(struct req_capsule *pill,
1986 const struct req_msg_field *field,
1989 req_capsule_set_size(pill, field, RCL_SERVER, len);
1990 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1992 EXPORT_SYMBOL(req_capsule_server_sized_get);
1994 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
1995 const struct req_msg_field *field,
1996 int len, void *swabber)
1998 req_capsule_set_size(pill, field, RCL_SERVER, len);
1999 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2001 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2004 * Returns the buffer of a \a pill corresponding to the given \a field from the
2005 * request (if the caller is executing on the server-side) or reply (if the
2006 * caller is executing on the client-side).
2008 * This function convienient for use is code that could be executed on the
2009 * client and server alike.
2011 const void *req_capsule_other_get(struct req_capsule *pill,
2012 const struct req_msg_field *field)
2014 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
2016 EXPORT_SYMBOL(req_capsule_other_get);
2019 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2020 * field of the given \a pill.
2022 * This function must be used when constructing variable sized fields of a
2025 void req_capsule_set_size(struct req_capsule *pill,
2026 const struct req_msg_field *field,
2027 enum req_location loc, int size)
2029 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2031 if ((size != field->rmf_size) &&
2032 (field->rmf_size != -1) &&
2033 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2035 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2036 (size % field->rmf_size != 0)) {
2037 CERROR("%s: array field size mismatch "
2038 "%d %% %d != 0 (%d)\n",
2039 field->rmf_name, size, field->rmf_size, loc);
2041 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2042 size < field->rmf_size) {
2043 CERROR("%s: field size mismatch %d != %d (%d)\n",
2044 field->rmf_name, size, field->rmf_size, loc);
2049 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2051 EXPORT_SYMBOL(req_capsule_set_size);
2054 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2055 * for the given \a pill's given \a field.
2057 * NB: this function doesn't correspond with req_capsule_set_size(), which
2058 * actually sets the size in pill.rc_area[loc][offset], but this function
2059 * returns the message buflen[offset], maybe we should use another name.
2061 int req_capsule_get_size(const struct req_capsule *pill,
2062 const struct req_msg_field *field,
2063 enum req_location loc)
2065 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2067 return lustre_msg_buflen(__req_msg(pill, loc),
2068 __req_capsule_offset(pill, field, loc));
2070 EXPORT_SYMBOL(req_capsule_get_size);
2073 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2074 * given \a pill's request or reply (\a loc) given the field size recorded in
2075 * the \a pill's rc_area.
2077 * See also req_capsule_set_size().
2079 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2081 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2082 pill->rc_fmt->rf_fields[loc].nr,
2083 pill->rc_area[loc]);
2087 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2088 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2089 * PTLRPC request or reply given only an RQF (\a fmt).
2091 * This function should not be used for formats which contain variable size
2094 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2095 enum req_location loc)
2100 * This function should probably LASSERT() that fmt has no fields with
2101 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2102 * elements in the array there will ultimately be, but then, we could
2103 * assume that there will be at least one element, and that's just what
2106 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2110 for (; i < fmt->rf_fields[loc].nr; ++i)
2111 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2112 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2118 * Changes the format of an RPC.
2120 * The pill must already have been initialized, which means that it already has
2121 * a request format. The new format \a fmt must be an extension of the pill's
2122 * old format. Specifically: the new format must have as many request and reply
2123 * fields as the old one, and all fields shared by the old and new format must
2124 * be at least as large in the new format.
2126 * The new format's fields may be of different "type" than the old format, but
2127 * only for fields that are "opaque" blobs: fields which have a) have no
2128 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2129 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2130 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2131 * according to the key field. When the value, according to the key, contains a
2132 * structure (or array thereof) to be swabbed, the format should be changed to
2133 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2136 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2141 const struct req_format *old;
2143 LASSERT(pill->rc_fmt != NULL);
2144 LASSERT(__req_format_is_sane(fmt));
2148 * Sanity checking...
2150 for (i = 0; i < RCL_NR; ++i) {
2151 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2152 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2153 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2155 /* "opaque" fields can be transmogrified */
2156 if (ofield->rmf_swabber == NULL &&
2157 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2158 (ofield->rmf_size == -1 ||
2159 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2161 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2164 * Last field in old format can be shorter than in new.
2166 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2167 FMT_FIELD(old, i, j)->rmf_size);
2172 EXPORT_SYMBOL(req_capsule_extend);
2175 * This function returns a non-zero value if the given \a field is present in
2176 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2179 int req_capsule_has_field(const struct req_capsule *pill,
2180 const struct req_msg_field *field,
2181 enum req_location loc)
2183 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2185 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2187 EXPORT_SYMBOL(req_capsule_has_field);
2190 * Returns a non-zero value if the given \a field is present in the given \a
2191 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2193 int req_capsule_field_present(const struct req_capsule *pill,
2194 const struct req_msg_field *field,
2195 enum req_location loc)
2199 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2200 LASSERT(req_capsule_has_field(pill, field, loc));
2202 offset = __req_capsule_offset(pill, field, loc);
2203 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2205 EXPORT_SYMBOL(req_capsule_field_present);
2208 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2209 * request or reply (\a loc).
2211 * This is not the opposite of req_capsule_extend().
2213 void req_capsule_shrink(struct req_capsule *pill,
2214 const struct req_msg_field *field,
2215 unsigned int newlen,
2216 enum req_location loc)
2218 const struct req_format *fmt;
2219 struct lustre_msg *msg;
2224 LASSERT(fmt != NULL);
2225 LASSERT(__req_format_is_sane(fmt));
2226 LASSERT(req_capsule_has_field(pill, field, loc));
2227 LASSERT(req_capsule_field_present(pill, field, loc));
2229 offset = __req_capsule_offset(pill, field, loc);
2231 msg = __req_msg(pill, loc);
2232 len = lustre_msg_buflen(msg, offset);
2233 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2234 fmt->rf_name, field->rmf_name, len, newlen);
2236 if (loc == RCL_CLIENT)
2237 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2240 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2243 EXPORT_SYMBOL(req_capsule_shrink);
2245 int req_capsule_server_grow(struct req_capsule *pill,
2246 const struct req_msg_field *field,
2247 unsigned int newlen)
2249 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2251 int offset, len, rc;
2253 LASSERT(pill->rc_fmt != NULL);
2254 LASSERT(__req_format_is_sane(pill->rc_fmt));
2255 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2256 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2258 len = req_capsule_get_size(pill, field, RCL_SERVER);
2259 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2260 if (pill->rc_req->rq_repbuf_len >=
2261 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2262 CERROR("Inplace repack might be done\n");
2264 pill->rc_req->rq_reply_state = NULL;
2265 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2266 rc = req_capsule_server_pack(pill);
2268 /* put old rs back, the caller will decide what to do */
2269 pill->rc_req->rq_reply_state = rs;
2272 nrs = pill->rc_req->rq_reply_state;
2273 /* Now we need only buffers, copy first chunk */
2274 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2275 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2276 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2277 memcpy(to, from, len);
2278 /* check if we have tail and copy it too */
2279 if (rs->rs_msg->lm_bufcount > offset + 1) {
2280 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2281 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2282 offset = rs->rs_msg->lm_bufcount - 1;
2283 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2284 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2285 memcpy(to, from, len);
2287 /* drop old reply if everything is fine */
2288 if (rs->rs_difficult) {
2292 nrs->rs_difficult = 1;
2293 nrs->rs_no_ack = rs->rs_no_ack;
2294 for (i = 0; i < rs->rs_nlocks; i++) {
2295 nrs->rs_locks[i] = rs->rs_locks[i];
2296 nrs->rs_modes[i] = rs->rs_modes[i];
2300 rs->rs_difficult = 0;
2303 ptlrpc_rs_decref(rs);
2306 EXPORT_SYMBOL(req_capsule_server_grow);
2307 /* __REQ_LAYOUT_USER__ */