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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/ptlrpc/layout.c
34 * Lustre Metadata Target (mdt) request handler
36 * Author: Nikita Danilov <nikita@clusterfs.com>
39 * This file contains the "capsule/pill" abstraction layered above PTLRPC.
41 * Every struct ptlrpc_request contains a "pill", which points to a description
42 * of the format that the request conforms to.
45 #if !defined(__REQ_LAYOUT_USER__)
47 #define DEBUG_SUBSYSTEM S_RPC
49 #include <linux/module.h>
51 /* LUSTRE_VERSION_CODE */
52 #include "../include/lustre_ver.h"
54 #include "../include/obd_support.h"
55 /* lustre_swab_mdt_body */
56 #include "../include/lustre/lustre_idl.h"
57 /* obd2cli_tgt() (required by DEBUG_REQ()) */
58 #include "../include/obd.h"
60 /* __REQ_LAYOUT_USER__ */
62 /* struct ptlrpc_request, lustre_msg* */
63 #include "../include/lustre_req_layout.h"
64 #include "../include/lustre_acl.h"
65 #include "../include/lustre_debug.h"
68 * RQFs (see below) refer to two struct req_msg_field arrays describing the
69 * client request and server reply, respectively.
71 /* empty set of fields... for suitable definition of emptiness. */
72 static const struct req_msg_field *empty[] = {
76 static const struct req_msg_field *mgs_target_info_only[] = {
81 static const struct req_msg_field *mgs_set_info[] = {
86 static const struct req_msg_field *mgs_config_read_client[] = {
91 static const struct req_msg_field *mgs_config_read_server[] = {
96 static const struct req_msg_field *log_cancel_client[] = {
101 static const struct req_msg_field *mdt_body_only[] = {
106 static const struct req_msg_field *mdt_body_capa[] = {
112 static const struct req_msg_field *quotactl_only[] = {
117 static const struct req_msg_field *mdt_close_client[] = {
124 static const struct req_msg_field *mdt_release_close_client[] = {
132 static const struct req_msg_field *obd_statfs_server[] = {
137 static const struct req_msg_field *seq_query_client[] = {
143 static const struct req_msg_field *seq_query_server[] = {
148 static const struct req_msg_field *fld_query_client[] = {
154 static const struct req_msg_field *fld_query_server[] = {
159 static const struct req_msg_field *fld_read_client[] = {
164 static const struct req_msg_field *fld_read_server[] = {
169 static const struct req_msg_field *mds_getattr_name_client[] = {
176 static const struct req_msg_field *mds_reint_client[] = {
181 static const struct req_msg_field *mds_reint_create_client[] = {
188 static const struct req_msg_field *mds_reint_create_slave_client[] = {
197 static const struct req_msg_field *mds_reint_create_acl_client[] = {
206 static const struct req_msg_field *mds_reint_create_sym_client[] = {
215 static const struct req_msg_field *mds_reint_open_client[] = {
224 static const struct req_msg_field *mds_reint_open_server[] = {
233 static const struct req_msg_field *mds_reint_unlink_client[] = {
241 static const struct req_msg_field *mds_reint_link_client[] = {
250 static const struct req_msg_field *mds_reint_rename_client[] = {
260 static const struct req_msg_field *mds_last_unlink_server[] = {
269 static const struct req_msg_field *mds_reint_setattr_client[] = {
279 static const struct req_msg_field *mds_reint_setxattr_client[] = {
288 static const struct req_msg_field *mdt_swap_layouts[] = {
297 static const struct req_msg_field *obd_connect_client[] = {
305 static const struct req_msg_field *obd_connect_server[] = {
310 static const struct req_msg_field *obd_set_info_client[] = {
316 static const struct req_msg_field *ost_grant_shrink_client[] = {
322 static const struct req_msg_field *mds_getinfo_client[] = {
328 static const struct req_msg_field *mds_getinfo_server[] = {
333 static const struct req_msg_field *ldlm_enqueue_client[] = {
338 static const struct req_msg_field *ldlm_enqueue_server[] = {
343 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
349 static const struct req_msg_field *ldlm_cp_callback_client[] = {
355 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
361 static const struct req_msg_field *ldlm_gl_callback_server[] = {
366 static const struct req_msg_field *ldlm_intent_basic_client[] = {
372 static const struct req_msg_field *ldlm_intent_client[] = {
379 static const struct req_msg_field *ldlm_intent_server[] = {
387 static const struct req_msg_field *ldlm_intent_layout_client[] = {
392 &RMF_EADATA /* for new layout to be set up */
395 static const struct req_msg_field *ldlm_intent_open_server[] = {
405 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
409 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
414 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
423 static const struct req_msg_field *ldlm_intent_create_client[] = {
427 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
433 static const struct req_msg_field *ldlm_intent_open_client[] = {
437 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
444 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
448 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
453 static const struct req_msg_field *ldlm_intent_getxattr_client[] = {
461 static const struct req_msg_field *ldlm_intent_getxattr_server[] = {
466 &RMF_ACL, /* for req_capsule_extend/mdt_intent_policy */
472 static const struct req_msg_field *mds_getxattr_client[] = {
480 static const struct req_msg_field *mds_getxattr_server[] = {
486 static const struct req_msg_field *mds_getattr_server[] = {
495 static const struct req_msg_field *mds_setattr_server[] = {
504 static const struct req_msg_field *llog_origin_handle_create_client[] = {
510 static const struct req_msg_field *llogd_body_only[] = {
515 static const struct req_msg_field *llog_log_hdr_only[] = {
520 static const struct req_msg_field *llogd_conn_body_only[] = {
525 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
531 static const struct req_msg_field *ost_body_only[] = {
536 static const struct req_msg_field *ost_body_capa[] = {
542 static const struct req_msg_field *ost_destroy_client[] = {
549 static const struct req_msg_field *ost_brw_client[] = {
557 static const struct req_msg_field *ost_brw_read_server[] = {
562 static const struct req_msg_field *ost_brw_write_server[] = {
568 static const struct req_msg_field *ost_get_info_generic_server[] = {
573 static const struct req_msg_field *ost_get_info_generic_client[] = {
578 static const struct req_msg_field *ost_get_last_id_server[] = {
583 static const struct req_msg_field *ost_get_last_fid_client[] = {
589 static const struct req_msg_field *ost_get_last_fid_server[] = {
594 static const struct req_msg_field *ost_get_fiemap_client[] = {
600 static const struct req_msg_field *ost_get_fiemap_server[] = {
605 static const struct req_msg_field *mdt_hsm_progress[] = {
608 &RMF_MDS_HSM_PROGRESS,
611 static const struct req_msg_field *mdt_hsm_ct_register[] = {
614 &RMF_MDS_HSM_ARCHIVE,
617 static const struct req_msg_field *mdt_hsm_ct_unregister[] = {
622 static const struct req_msg_field *mdt_hsm_action_server[] = {
625 &RMF_MDS_HSM_CURRENT_ACTION,
628 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
634 static const struct req_msg_field *mdt_hsm_state_set[] = {
641 static const struct req_msg_field *mdt_hsm_request[] = {
644 &RMF_MDS_HSM_REQUEST,
645 &RMF_MDS_HSM_USER_ITEM,
649 static struct req_format *req_formats[] = {
655 &RQF_MGS_CONFIG_READ,
665 &RQF_MDS_GETATTR_NAME,
669 &RQF_MDS_RELEASE_CLOSE,
672 &RQF_MDS_DONE_WRITING,
674 &RQF_MDS_REINT_CREATE,
675 &RQF_MDS_REINT_CREATE_ACL,
676 &RQF_MDS_REINT_CREATE_SLAVE,
677 &RQF_MDS_REINT_CREATE_SYM,
679 &RQF_MDS_REINT_UNLINK,
681 &RQF_MDS_REINT_RENAME,
682 &RQF_MDS_REINT_SETATTR,
683 &RQF_MDS_REINT_SETXATTR,
686 &RQF_MDS_HSM_PROGRESS,
687 &RQF_MDS_HSM_CT_REGISTER,
688 &RQF_MDS_HSM_CT_UNREGISTER,
689 &RQF_MDS_HSM_STATE_GET,
690 &RQF_MDS_HSM_STATE_SET,
692 &RQF_MDS_HSM_REQUEST,
693 &RQF_MDS_SWAP_LAYOUTS,
708 &RQF_OST_SET_GRANT_INFO,
710 &RQF_OST_GET_INFO_LAST_ID,
711 &RQF_OST_GET_INFO_LAST_FID,
712 &RQF_OST_SET_INFO_LAST_FID,
713 &RQF_OST_GET_INFO_FIEMAP,
715 &RQF_LDLM_ENQUEUE_LVB,
719 &RQF_LDLM_CP_CALLBACK,
720 &RQF_LDLM_BL_CALLBACK,
721 &RQF_LDLM_GL_CALLBACK,
722 &RQF_LDLM_GL_DESC_CALLBACK,
724 &RQF_LDLM_INTENT_BASIC,
725 &RQF_LDLM_INTENT_LAYOUT,
726 &RQF_LDLM_INTENT_GETATTR,
727 &RQF_LDLM_INTENT_OPEN,
728 &RQF_LDLM_INTENT_CREATE,
729 &RQF_LDLM_INTENT_UNLINK,
730 &RQF_LDLM_INTENT_GETXATTR,
732 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
733 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
734 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
735 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
736 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
737 &RQF_LLOG_ORIGIN_CONNECT,
741 struct req_msg_field {
742 const __u32 rmf_flags;
743 const char *rmf_name;
745 * Field length. (-1) means "variable length". If the
746 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
747 * but the actual size must be a whole multiple of \a rmf_size.
750 void (*rmf_swabber)(void *);
751 void (*rmf_dumper)(void *);
752 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
757 * The field is a string, must be NUL-terminated.
759 RMF_F_STRING = BIT(0),
761 * The field's buffer size need not match the declared \a rmf_size.
763 RMF_F_NO_SIZE_CHECK = BIT(1),
765 * The field's buffer size must be a whole multiple of the declared \a
766 * rmf_size and the \a rmf_swabber function must work on the declared \a
767 * rmf_size worth of bytes.
769 RMF_F_STRUCT_ARRAY = BIT(2)
777 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
778 .rmf_name = (name), \
779 .rmf_flags = (flags), \
780 .rmf_size = (size), \
781 .rmf_swabber = (void (*)(void *))(swabber), \
782 .rmf_dumper = (void (*)(void *))(dumper) \
785 struct req_msg_field RMF_GENERIC_DATA =
786 DEFINE_MSGF("generic_data", 0,
788 EXPORT_SYMBOL(RMF_GENERIC_DATA);
790 struct req_msg_field RMF_MGS_TARGET_INFO =
791 DEFINE_MSGF("mgs_target_info", 0,
792 sizeof(struct mgs_target_info),
793 lustre_swab_mgs_target_info, NULL);
794 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
796 struct req_msg_field RMF_MGS_SEND_PARAM =
797 DEFINE_MSGF("mgs_send_param", 0,
798 sizeof(struct mgs_send_param),
800 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
802 struct req_msg_field RMF_MGS_CONFIG_BODY =
803 DEFINE_MSGF("mgs_config_read request", 0,
804 sizeof(struct mgs_config_body),
805 lustre_swab_mgs_config_body, NULL);
806 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
808 struct req_msg_field RMF_MGS_CONFIG_RES =
809 DEFINE_MSGF("mgs_config_read reply ", 0,
810 sizeof(struct mgs_config_res),
811 lustre_swab_mgs_config_res, NULL);
812 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
814 struct req_msg_field RMF_U32 =
815 DEFINE_MSGF("generic u32", 0,
816 sizeof(__u32), lustre_swab_generic_32s, NULL);
817 EXPORT_SYMBOL(RMF_U32);
819 struct req_msg_field RMF_SETINFO_VAL =
820 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
821 EXPORT_SYMBOL(RMF_SETINFO_VAL);
823 struct req_msg_field RMF_GETINFO_KEY =
824 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
825 EXPORT_SYMBOL(RMF_GETINFO_KEY);
827 struct req_msg_field RMF_GETINFO_VALLEN =
828 DEFINE_MSGF("getinfo_vallen", 0,
829 sizeof(__u32), lustre_swab_generic_32s, NULL);
830 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
832 struct req_msg_field RMF_GETINFO_VAL =
833 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
834 EXPORT_SYMBOL(RMF_GETINFO_VAL);
836 struct req_msg_field RMF_SEQ_OPC =
837 DEFINE_MSGF("seq_query_opc", 0,
838 sizeof(__u32), lustre_swab_generic_32s, NULL);
839 EXPORT_SYMBOL(RMF_SEQ_OPC);
841 struct req_msg_field RMF_SEQ_RANGE =
842 DEFINE_MSGF("seq_query_range", 0,
843 sizeof(struct lu_seq_range),
844 lustre_swab_lu_seq_range, NULL);
845 EXPORT_SYMBOL(RMF_SEQ_RANGE);
847 struct req_msg_field RMF_FLD_OPC =
848 DEFINE_MSGF("fld_query_opc", 0,
849 sizeof(__u32), lustre_swab_generic_32s, NULL);
850 EXPORT_SYMBOL(RMF_FLD_OPC);
852 struct req_msg_field RMF_FLD_MDFLD =
853 DEFINE_MSGF("fld_query_mdfld", 0,
854 sizeof(struct lu_seq_range),
855 lustre_swab_lu_seq_range, NULL);
856 EXPORT_SYMBOL(RMF_FLD_MDFLD);
858 struct req_msg_field RMF_MDT_BODY =
859 DEFINE_MSGF("mdt_body", 0,
860 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
861 EXPORT_SYMBOL(RMF_MDT_BODY);
863 struct req_msg_field RMF_OBD_QUOTACTL =
864 DEFINE_MSGF("obd_quotactl", 0,
865 sizeof(struct obd_quotactl),
866 lustre_swab_obd_quotactl, NULL);
867 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
869 struct req_msg_field RMF_MDT_EPOCH =
870 DEFINE_MSGF("mdt_ioepoch", 0,
871 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
872 EXPORT_SYMBOL(RMF_MDT_EPOCH);
874 struct req_msg_field RMF_PTLRPC_BODY =
875 DEFINE_MSGF("ptlrpc_body", 0,
876 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
877 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
879 struct req_msg_field RMF_CLOSE_DATA =
880 DEFINE_MSGF("data_version", 0,
881 sizeof(struct close_data), lustre_swab_close_data, NULL);
882 EXPORT_SYMBOL(RMF_CLOSE_DATA);
884 struct req_msg_field RMF_OBD_STATFS =
885 DEFINE_MSGF("obd_statfs", 0,
886 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
887 EXPORT_SYMBOL(RMF_OBD_STATFS);
889 struct req_msg_field RMF_SETINFO_KEY =
890 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
891 EXPORT_SYMBOL(RMF_SETINFO_KEY);
893 struct req_msg_field RMF_NAME =
894 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
895 EXPORT_SYMBOL(RMF_NAME);
897 struct req_msg_field RMF_SYMTGT =
898 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
899 EXPORT_SYMBOL(RMF_SYMTGT);
901 struct req_msg_field RMF_TGTUUID =
902 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
904 EXPORT_SYMBOL(RMF_TGTUUID);
906 struct req_msg_field RMF_CLUUID =
907 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
909 EXPORT_SYMBOL(RMF_CLUUID);
911 struct req_msg_field RMF_STRING =
912 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
913 EXPORT_SYMBOL(RMF_STRING);
915 struct req_msg_field RMF_LLOGD_BODY =
916 DEFINE_MSGF("llogd_body", 0,
917 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
918 EXPORT_SYMBOL(RMF_LLOGD_BODY);
920 struct req_msg_field RMF_LLOG_LOG_HDR =
921 DEFINE_MSGF("llog_log_hdr", 0,
922 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
923 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
925 struct req_msg_field RMF_LLOGD_CONN_BODY =
926 DEFINE_MSGF("llogd_conn_body", 0,
927 sizeof(struct llogd_conn_body),
928 lustre_swab_llogd_conn_body, NULL);
929 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
932 * connection handle received in MDS_CONNECT request.
934 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
935 * that the client does not interpret at all.
937 struct req_msg_field RMF_CONN =
938 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
939 EXPORT_SYMBOL(RMF_CONN);
941 struct req_msg_field RMF_CONNECT_DATA =
943 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
944 sizeof(struct obd_connect_data),
945 lustre_swab_connect, NULL);
946 EXPORT_SYMBOL(RMF_CONNECT_DATA);
948 struct req_msg_field RMF_DLM_REQ =
949 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
950 sizeof(struct ldlm_request),
951 lustre_swab_ldlm_request, NULL);
952 EXPORT_SYMBOL(RMF_DLM_REQ);
954 struct req_msg_field RMF_DLM_REP =
955 DEFINE_MSGF("dlm_rep", 0,
956 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
957 EXPORT_SYMBOL(RMF_DLM_REP);
959 struct req_msg_field RMF_LDLM_INTENT =
960 DEFINE_MSGF("ldlm_intent", 0,
961 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
962 EXPORT_SYMBOL(RMF_LDLM_INTENT);
964 struct req_msg_field RMF_DLM_LVB =
965 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
966 EXPORT_SYMBOL(RMF_DLM_LVB);
968 struct req_msg_field RMF_DLM_GL_DESC =
969 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
970 lustre_swab_gl_desc, NULL);
971 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
973 struct req_msg_field RMF_MDT_MD =
974 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
975 EXPORT_SYMBOL(RMF_MDT_MD);
977 struct req_msg_field RMF_REC_REINT =
978 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
979 lustre_swab_mdt_rec_reint, NULL);
980 EXPORT_SYMBOL(RMF_REC_REINT);
982 /* FIXME: this length should be defined as a macro */
983 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
985 EXPORT_SYMBOL(RMF_EADATA);
987 struct req_msg_field RMF_EAVALS = DEFINE_MSGF("eavals", 0, -1, NULL, NULL);
988 EXPORT_SYMBOL(RMF_EAVALS);
990 struct req_msg_field RMF_ACL =
991 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
992 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
993 EXPORT_SYMBOL(RMF_ACL);
995 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
996 struct req_msg_field RMF_LOGCOOKIES =
997 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
998 sizeof(struct llog_cookie), NULL, NULL);
999 EXPORT_SYMBOL(RMF_LOGCOOKIES);
1001 struct req_msg_field RMF_CAPA1 =
1002 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1003 lustre_swab_lustre_capa, NULL);
1004 EXPORT_SYMBOL(RMF_CAPA1);
1006 struct req_msg_field RMF_CAPA2 =
1007 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1008 lustre_swab_lustre_capa, NULL);
1009 EXPORT_SYMBOL(RMF_CAPA2);
1011 struct req_msg_field RMF_LAYOUT_INTENT =
1012 DEFINE_MSGF("layout_intent", 0,
1013 sizeof(struct layout_intent), lustre_swab_layout_intent,
1015 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1018 * OST request field.
1020 struct req_msg_field RMF_OST_BODY =
1021 DEFINE_MSGF("ost_body", 0,
1022 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1023 EXPORT_SYMBOL(RMF_OST_BODY);
1025 struct req_msg_field RMF_OBD_IOOBJ =
1026 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1027 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1028 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1030 struct req_msg_field RMF_NIOBUF_REMOTE =
1031 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1032 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1034 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1036 struct req_msg_field RMF_RCS =
1037 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1038 lustre_swab_generic_32s, dump_rcs);
1039 EXPORT_SYMBOL(RMF_RCS);
1041 struct req_msg_field RMF_EAVALS_LENS =
1042 DEFINE_MSGF("eavals_lens", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1043 lustre_swab_generic_32s, NULL);
1044 EXPORT_SYMBOL(RMF_EAVALS_LENS);
1046 struct req_msg_field RMF_OBD_ID =
1047 DEFINE_MSGF("u64", 0,
1048 sizeof(u64), lustre_swab_ost_last_id, NULL);
1049 EXPORT_SYMBOL(RMF_OBD_ID);
1051 struct req_msg_field RMF_FID =
1052 DEFINE_MSGF("fid", 0,
1053 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1054 EXPORT_SYMBOL(RMF_FID);
1056 struct req_msg_field RMF_OST_ID =
1057 DEFINE_MSGF("ost_id", 0,
1058 sizeof(struct ost_id), lustre_swab_ost_id, NULL);
1059 EXPORT_SYMBOL(RMF_OST_ID);
1061 struct req_msg_field RMF_FIEMAP_KEY =
1062 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1063 lustre_swab_fiemap, NULL);
1064 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1066 struct req_msg_field RMF_FIEMAP_VAL =
1067 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1068 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1070 struct req_msg_field RMF_HSM_USER_STATE =
1071 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1072 lustre_swab_hsm_user_state, NULL);
1073 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1075 struct req_msg_field RMF_HSM_STATE_SET =
1076 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1077 lustre_swab_hsm_state_set, NULL);
1078 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1080 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1081 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1082 lustre_swab_hsm_progress_kernel, NULL);
1083 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1085 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1086 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1087 lustre_swab_hsm_current_action, NULL);
1088 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1090 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1091 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1092 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1094 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1096 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1097 DEFINE_MSGF("hsm_archive", 0,
1098 sizeof(__u32), lustre_swab_generic_32s, NULL);
1099 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1101 struct req_msg_field RMF_MDS_HSM_REQUEST =
1102 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1103 lustre_swab_hsm_request, NULL);
1104 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1106 struct req_msg_field RMF_SWAP_LAYOUTS =
1107 DEFINE_MSGF("swap_layouts", 0, sizeof(struct mdc_swap_layouts),
1108 lustre_swab_swap_layouts, NULL);
1109 EXPORT_SYMBOL(RMF_SWAP_LAYOUTS);
1115 const char *rf_name;
1119 const struct req_msg_field **d;
1120 } rf_fields[RCL_NR];
1123 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1137 #define DEFINE_REQ_FMT0(name, client, server) \
1138 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1140 struct req_format RQF_OBD_PING =
1141 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1142 EXPORT_SYMBOL(RQF_OBD_PING);
1144 struct req_format RQF_OBD_SET_INFO =
1145 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1146 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1148 struct req_format RQF_SEC_CTX =
1149 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1150 EXPORT_SYMBOL(RQF_SEC_CTX);
1152 struct req_format RQF_MGS_TARGET_REG =
1153 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1154 mgs_target_info_only);
1155 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1157 struct req_format RQF_MGS_SET_INFO =
1158 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1160 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1162 struct req_format RQF_MGS_CONFIG_READ =
1163 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1164 mgs_config_read_server);
1165 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1167 struct req_format RQF_SEQ_QUERY =
1168 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1169 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1171 struct req_format RQF_FLD_QUERY =
1172 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1173 EXPORT_SYMBOL(RQF_FLD_QUERY);
1175 struct req_format RQF_FLD_READ =
1176 DEFINE_REQ_FMT0("FLD_READ", fld_read_client, fld_read_server);
1177 EXPORT_SYMBOL(RQF_FLD_READ);
1179 struct req_format RQF_LOG_CANCEL =
1180 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1181 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1183 struct req_format RQF_MDS_QUOTACHECK =
1184 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1185 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1187 struct req_format RQF_OST_QUOTACHECK =
1188 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1189 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1191 struct req_format RQF_MDS_QUOTACTL =
1192 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1193 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1195 struct req_format RQF_OST_QUOTACTL =
1196 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1197 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1199 struct req_format RQF_QC_CALLBACK =
1200 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1201 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1203 struct req_format RQF_MDS_GETSTATUS =
1204 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1205 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1207 struct req_format RQF_MDS_STATFS =
1208 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1209 EXPORT_SYMBOL(RQF_MDS_STATFS);
1211 struct req_format RQF_MDS_SYNC =
1212 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1213 EXPORT_SYMBOL(RQF_MDS_SYNC);
1215 struct req_format RQF_MDS_GETATTR =
1216 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1217 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1219 struct req_format RQF_MDS_GETXATTR =
1220 DEFINE_REQ_FMT0("MDS_GETXATTR",
1221 mds_getxattr_client, mds_getxattr_server);
1222 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1224 struct req_format RQF_MDS_GETATTR_NAME =
1225 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1226 mds_getattr_name_client, mds_getattr_server);
1227 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1229 struct req_format RQF_MDS_REINT =
1230 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1231 EXPORT_SYMBOL(RQF_MDS_REINT);
1233 struct req_format RQF_MDS_REINT_CREATE =
1234 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1235 mds_reint_create_client, mdt_body_capa);
1236 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1238 struct req_format RQF_MDS_REINT_CREATE_ACL =
1239 DEFINE_REQ_FMT0("MDS_REINT_CREATE_ACL",
1240 mds_reint_create_acl_client, mdt_body_capa);
1241 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_ACL);
1243 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1244 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1245 mds_reint_create_slave_client, mdt_body_capa);
1246 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1248 struct req_format RQF_MDS_REINT_CREATE_SYM =
1249 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1250 mds_reint_create_sym_client, mdt_body_capa);
1251 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1253 struct req_format RQF_MDS_REINT_OPEN =
1254 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1255 mds_reint_open_client, mds_reint_open_server);
1256 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1258 struct req_format RQF_MDS_REINT_UNLINK =
1259 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1260 mds_last_unlink_server);
1261 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1263 struct req_format RQF_MDS_REINT_LINK =
1264 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1265 mds_reint_link_client, mdt_body_only);
1266 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1268 struct req_format RQF_MDS_REINT_RENAME =
1269 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1270 mds_last_unlink_server);
1271 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1273 struct req_format RQF_MDS_REINT_SETATTR =
1274 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1275 mds_reint_setattr_client, mds_setattr_server);
1276 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1278 struct req_format RQF_MDS_REINT_SETXATTR =
1279 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1280 mds_reint_setxattr_client, mdt_body_only);
1281 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1283 struct req_format RQF_MDS_CONNECT =
1284 DEFINE_REQ_FMT0("MDS_CONNECT",
1285 obd_connect_client, obd_connect_server);
1286 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1288 struct req_format RQF_MDS_DISCONNECT =
1289 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1290 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1292 struct req_format RQF_MDS_GET_INFO =
1293 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1294 mds_getinfo_server);
1295 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1297 struct req_format RQF_LDLM_ENQUEUE =
1298 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1299 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1300 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1302 struct req_format RQF_LDLM_ENQUEUE_LVB =
1303 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1304 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1305 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1307 struct req_format RQF_LDLM_CONVERT =
1308 DEFINE_REQ_FMT0("LDLM_CONVERT",
1309 ldlm_enqueue_client, ldlm_enqueue_server);
1310 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1312 struct req_format RQF_LDLM_CANCEL =
1313 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1314 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1316 struct req_format RQF_LDLM_CALLBACK =
1317 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1318 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1320 struct req_format RQF_LDLM_CP_CALLBACK =
1321 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1322 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1324 struct req_format RQF_LDLM_BL_CALLBACK =
1325 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1326 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1328 struct req_format RQF_LDLM_GL_CALLBACK =
1329 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1330 ldlm_gl_callback_server);
1331 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1333 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1334 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1335 ldlm_gl_callback_server);
1336 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1338 struct req_format RQF_LDLM_INTENT_BASIC =
1339 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1340 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1341 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1343 struct req_format RQF_LDLM_INTENT =
1344 DEFINE_REQ_FMT0("LDLM_INTENT",
1345 ldlm_intent_client, ldlm_intent_server);
1346 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1348 struct req_format RQF_LDLM_INTENT_LAYOUT =
1349 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1350 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1351 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1353 struct req_format RQF_LDLM_INTENT_GETATTR =
1354 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1355 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1356 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1358 struct req_format RQF_LDLM_INTENT_OPEN =
1359 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1360 ldlm_intent_open_client, ldlm_intent_open_server);
1361 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1363 struct req_format RQF_LDLM_INTENT_CREATE =
1364 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1365 ldlm_intent_create_client, ldlm_intent_getattr_server);
1366 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1368 struct req_format RQF_LDLM_INTENT_UNLINK =
1369 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1370 ldlm_intent_unlink_client, ldlm_intent_server);
1371 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1373 struct req_format RQF_LDLM_INTENT_GETXATTR =
1374 DEFINE_REQ_FMT0("LDLM_INTENT_GETXATTR",
1375 ldlm_intent_getxattr_client,
1376 ldlm_intent_getxattr_server);
1377 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETXATTR);
1379 struct req_format RQF_MDS_CLOSE =
1380 DEFINE_REQ_FMT0("MDS_CLOSE",
1381 mdt_close_client, mds_last_unlink_server);
1382 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1384 struct req_format RQF_MDS_RELEASE_CLOSE =
1385 DEFINE_REQ_FMT0("MDS_CLOSE",
1386 mdt_release_close_client, mds_last_unlink_server);
1387 EXPORT_SYMBOL(RQF_MDS_RELEASE_CLOSE);
1389 struct req_format RQF_MDS_DONE_WRITING =
1390 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1391 mdt_close_client, mdt_body_only);
1392 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1394 struct req_format RQF_MDS_READPAGE =
1395 DEFINE_REQ_FMT0("MDS_READPAGE",
1396 mdt_body_capa, mdt_body_only);
1397 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1399 struct req_format RQF_MDS_HSM_ACTION =
1400 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1401 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1403 struct req_format RQF_MDS_HSM_PROGRESS =
1404 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1405 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1407 struct req_format RQF_MDS_HSM_CT_REGISTER =
1408 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1409 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1411 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1412 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", mdt_hsm_ct_unregister, empty);
1413 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1415 struct req_format RQF_MDS_HSM_STATE_GET =
1416 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1417 mdt_body_capa, mdt_hsm_state_get_server);
1418 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1420 struct req_format RQF_MDS_HSM_STATE_SET =
1421 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1422 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1424 struct req_format RQF_MDS_HSM_REQUEST =
1425 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1426 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1428 struct req_format RQF_MDS_SWAP_LAYOUTS =
1429 DEFINE_REQ_FMT0("MDS_SWAP_LAYOUTS",
1430 mdt_swap_layouts, empty);
1431 EXPORT_SYMBOL(RQF_MDS_SWAP_LAYOUTS);
1433 /* This is for split */
1434 struct req_format RQF_MDS_WRITEPAGE =
1435 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1436 mdt_body_capa, mdt_body_only);
1437 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1439 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1440 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1441 llog_origin_handle_create_client, llogd_body_only);
1442 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1444 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1445 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1446 llogd_body_only, llogd_body_only);
1447 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1449 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1450 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1451 llogd_body_only, llog_origin_handle_next_block_server);
1452 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1454 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1455 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1456 llogd_body_only, llog_origin_handle_next_block_server);
1457 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1459 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1460 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1461 llogd_body_only, llog_log_hdr_only);
1462 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1464 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1465 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1466 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1468 struct req_format RQF_CONNECT =
1469 DEFINE_REQ_FMT0("CONNECT", obd_connect_client, obd_connect_server);
1470 EXPORT_SYMBOL(RQF_CONNECT);
1472 struct req_format RQF_OST_CONNECT =
1473 DEFINE_REQ_FMT0("OST_CONNECT",
1474 obd_connect_client, obd_connect_server);
1475 EXPORT_SYMBOL(RQF_OST_CONNECT);
1477 struct req_format RQF_OST_DISCONNECT =
1478 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1479 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1481 struct req_format RQF_OST_GETATTR =
1482 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1483 EXPORT_SYMBOL(RQF_OST_GETATTR);
1485 struct req_format RQF_OST_SETATTR =
1486 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1487 EXPORT_SYMBOL(RQF_OST_SETATTR);
1489 struct req_format RQF_OST_CREATE =
1490 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1491 EXPORT_SYMBOL(RQF_OST_CREATE);
1493 struct req_format RQF_OST_PUNCH =
1494 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1495 EXPORT_SYMBOL(RQF_OST_PUNCH);
1497 struct req_format RQF_OST_SYNC =
1498 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1499 EXPORT_SYMBOL(RQF_OST_SYNC);
1501 struct req_format RQF_OST_DESTROY =
1502 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1503 EXPORT_SYMBOL(RQF_OST_DESTROY);
1505 struct req_format RQF_OST_BRW_READ =
1506 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1507 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1509 struct req_format RQF_OST_BRW_WRITE =
1510 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1511 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1513 struct req_format RQF_OST_STATFS =
1514 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1515 EXPORT_SYMBOL(RQF_OST_STATFS);
1517 struct req_format RQF_OST_SET_GRANT_INFO =
1518 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1520 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1522 struct req_format RQF_OST_GET_INFO =
1523 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1524 ost_get_info_generic_server);
1525 EXPORT_SYMBOL(RQF_OST_GET_INFO);
1527 struct req_format RQF_OST_GET_INFO_LAST_ID =
1528 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1529 ost_get_last_id_server);
1530 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1532 struct req_format RQF_OST_GET_INFO_LAST_FID =
1533 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", ost_get_last_fid_client,
1534 ost_get_last_fid_server);
1535 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1537 struct req_format RQF_OST_SET_INFO_LAST_FID =
1538 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1540 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1542 struct req_format RQF_OST_GET_INFO_FIEMAP =
1543 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1544 ost_get_fiemap_server);
1545 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1547 #if !defined(__REQ_LAYOUT_USER__)
1549 /* Convenience macro */
1550 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1553 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1554 * field of RQFs and the \a rmf_offset field of RMFs.
1556 int req_layout_init(void)
1561 struct req_format *rf = NULL;
1563 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1564 rf = req_formats[i];
1566 for (j = 0; j < RCL_NR; ++j) {
1567 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1568 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1569 struct req_msg_field *field;
1571 field = (typeof(field))rf->rf_fields[j].d[k];
1572 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1573 || field->rmf_size > 0);
1574 LASSERT(field->rmf_offset[i][j] == 0);
1576 * k + 1 to detect unused format/field
1579 field->rmf_offset[i][j] = k + 1;
1585 EXPORT_SYMBOL(req_layout_init);
1587 void req_layout_fini(void)
1590 EXPORT_SYMBOL(req_layout_fini);
1593 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1595 * Actual/expected field sizes are set elsewhere in functions in this file:
1596 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1597 * req_capsule_msg_size(). The \a rc_area information is used by.
1598 * ptlrpc_request_set_replen().
1600 static void req_capsule_init_area(struct req_capsule *pill)
1604 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1605 pill->rc_area[RCL_CLIENT][i] = -1;
1606 pill->rc_area[RCL_SERVER][i] = -1;
1611 * Initialize a pill.
1613 * The \a location indicates whether the caller is executing on the client side
1614 * (RCL_CLIENT) or server side (RCL_SERVER)..
1616 void req_capsule_init(struct req_capsule *pill,
1617 struct ptlrpc_request *req,
1618 enum req_location location)
1620 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1623 * Today all capsules are embedded in ptlrpc_request structs,
1624 * but just in case that ever isn't the case, we don't reach
1625 * into req unless req != NULL and pill is the one embedded in
1628 * The req->rq_pill_init flag makes it safe to initialize a pill
1629 * twice, which might happen in the OST paths as a result of the
1630 * high-priority RPC queue getting peeked at before ost_handle()
1631 * handles an OST RPC.
1633 if (req && pill == &req->rq_pill && req->rq_pill_init)
1636 memset(pill, 0, sizeof(*pill));
1638 pill->rc_loc = location;
1639 req_capsule_init_area(pill);
1641 if (req && pill == &req->rq_pill)
1642 req->rq_pill_init = 1;
1644 EXPORT_SYMBOL(req_capsule_init);
1646 void req_capsule_fini(struct req_capsule *pill)
1649 EXPORT_SYMBOL(req_capsule_fini);
1651 static int __req_format_is_sane(const struct req_format *fmt)
1653 return fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1654 req_formats[fmt->rf_idx] == fmt;
1657 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1658 enum req_location loc)
1660 struct ptlrpc_request *req;
1663 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1667 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1668 * (see req_capsule_extend()).
1670 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1672 LASSERT(!pill->rc_fmt || pill->rc_fmt == fmt);
1673 LASSERT(__req_format_is_sane(fmt));
1677 EXPORT_SYMBOL(req_capsule_set);
1680 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1683 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1684 * variable-sized fields. The field sizes come from the declared \a rmf_size
1685 * field of a \a pill's \a rc_fmt's RMF's.
1687 size_t req_capsule_filled_sizes(struct req_capsule *pill,
1688 enum req_location loc)
1690 const struct req_format *fmt = pill->rc_fmt;
1693 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1694 if (pill->rc_area[loc][i] == -1) {
1695 pill->rc_area[loc][i] =
1696 fmt->rf_fields[loc].d[i]->rmf_size;
1697 if (pill->rc_area[loc][i] == -1) {
1699 * Skip the following fields.
1701 * If this LASSERT() trips then you're missing a
1702 * call to req_capsule_set_size().
1704 LASSERT(loc != RCL_SERVER);
1711 EXPORT_SYMBOL(req_capsule_filled_sizes);
1714 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1716 * This function uses the \a pill's \a rc_area as filled in by
1717 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1720 int req_capsule_server_pack(struct req_capsule *pill)
1722 const struct req_format *fmt;
1726 LASSERT(pill->rc_loc == RCL_SERVER);
1730 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1731 rc = lustre_pack_reply(pill->rc_req, count,
1732 pill->rc_area[RCL_SERVER], NULL);
1734 DEBUG_REQ(D_ERROR, pill->rc_req,
1735 "Cannot pack %d fields in format `%s': ",
1736 count, fmt->rf_name);
1740 EXPORT_SYMBOL(req_capsule_server_pack);
1743 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1744 * corresponding to the given RMF (\a field).
1746 static u32 __req_capsule_offset(const struct req_capsule *pill,
1747 const struct req_msg_field *field,
1748 enum req_location loc)
1752 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1753 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n", pill->rc_fmt->rf_name,
1754 field->rmf_name, offset, loc);
1757 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1762 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1767 swabber_dumper_helper(struct req_capsule *pill,
1768 const struct req_msg_field *field,
1769 enum req_location loc,
1771 void *value, int len, int dump, void (*swabber)(void *))
1777 int inout = loc == RCL_CLIENT;
1779 swabber = swabber ?: field->rmf_swabber;
1781 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1787 if (!field->rmf_dumper)
1790 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1792 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1793 do_swab ? "unswabbed " : "", field->rmf_name);
1794 field->rmf_dumper(value);
1799 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1800 if (dump && field->rmf_dumper) {
1801 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s follows\n",
1803 field->rmf_dumper(value);
1810 * We're swabbing an array; swabber() swabs a single array element, so
1811 * swab every element.
1813 LASSERT((len % field->rmf_size) == 0);
1814 for (p = value, i = 0, n = len / field->rmf_size;
1816 i++, p += field->rmf_size) {
1818 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, element %d follows\n",
1819 do_swab ? "unswabbed " : "", field->rmf_name, i);
1820 field->rmf_dumper(p);
1826 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, element %d follows\n",
1827 field->rmf_name, i);
1828 field->rmf_dumper(value);
1832 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1836 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1837 * corresponding to the given RMF (\a field).
1839 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1840 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1841 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1842 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1843 * element of the array swabbed.
1845 static void *__req_capsule_get(struct req_capsule *pill,
1846 const struct req_msg_field *field,
1847 enum req_location loc,
1848 void (*swabber)(void *),
1851 const struct req_format *fmt;
1852 struct lustre_msg *msg;
1857 void *(*getter)(struct lustre_msg *m, u32 n, u32 minlen);
1859 static const char *rcl_names[RCL_NR] = {
1860 [RCL_CLIENT] = "client",
1861 [RCL_SERVER] = "server"
1866 LASSERT(fmt != LP_POISON);
1867 LASSERT(__req_format_is_sane(fmt));
1869 offset = __req_capsule_offset(pill, field, loc);
1871 msg = __req_msg(pill, loc);
1874 getter = (field->rmf_flags & RMF_F_STRING) ?
1875 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1877 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1879 * We've already asserted that field->rmf_size > 0 in
1880 * req_layout_init().
1882 len = lustre_msg_buflen(msg, offset);
1883 if ((len % field->rmf_size) != 0) {
1884 CERROR("%s: array field size mismatch %d modulo %u != 0 (%d)\n",
1885 field->rmf_name, len, field->rmf_size, loc);
1888 } else if (pill->rc_area[loc][offset] != -1) {
1889 len = pill->rc_area[loc][offset];
1891 len = max_t(typeof(field->rmf_size), field->rmf_size, 0);
1893 value = getter(msg, offset, len);
1896 DEBUG_REQ(D_ERROR, pill->rc_req,
1897 "Wrong buffer for field `%s' (%u of %u) in format `%s': %u vs. %u (%s)\n",
1898 field->rmf_name, offset, lustre_msg_bufcount(msg),
1899 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1902 swabber_dumper_helper(pill, field, loc, offset, value, len,
1910 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1911 * buffer corresponding to the given RMF (\a field) of a \a pill.
1913 void *req_capsule_client_get(struct req_capsule *pill,
1914 const struct req_msg_field *field)
1916 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1918 EXPORT_SYMBOL(req_capsule_client_get);
1921 * Same as req_capsule_client_get(), but with a \a swabber argument.
1923 * Currently unused; will be removed when req_capsule_server_swab_get() is
1926 void *req_capsule_client_swab_get(struct req_capsule *pill,
1927 const struct req_msg_field *field,
1930 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1932 EXPORT_SYMBOL(req_capsule_client_swab_get);
1935 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
1937 * First the \a pill's request \a field's size is set (\a rc_area) using
1938 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1941 void *req_capsule_client_sized_get(struct req_capsule *pill,
1942 const struct req_msg_field *field,
1945 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1946 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1948 EXPORT_SYMBOL(req_capsule_client_sized_get);
1951 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
1952 * buffer corresponding to the given RMF (\a field) of a \a pill.
1954 void *req_capsule_server_get(struct req_capsule *pill,
1955 const struct req_msg_field *field)
1957 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1959 EXPORT_SYMBOL(req_capsule_server_get);
1962 * Same as req_capsule_server_get(), but with a \a swabber argument.
1964 * Ideally all swabbing should be done pursuant to RMF definitions, with no
1965 * swabbing done outside this capsule abstraction.
1967 void *req_capsule_server_swab_get(struct req_capsule *pill,
1968 const struct req_msg_field *field,
1971 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1973 EXPORT_SYMBOL(req_capsule_server_swab_get);
1976 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
1978 * First the \a pill's request \a field's size is set (\a rc_area) using
1979 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1982 void *req_capsule_server_sized_get(struct req_capsule *pill,
1983 const struct req_msg_field *field,
1986 req_capsule_set_size(pill, field, RCL_SERVER, len);
1987 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1989 EXPORT_SYMBOL(req_capsule_server_sized_get);
1991 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
1992 const struct req_msg_field *field,
1993 u32 len, void *swabber)
1995 req_capsule_set_size(pill, field, RCL_SERVER, len);
1996 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1998 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2001 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2002 * field of the given \a pill.
2004 * This function must be used when constructing variable sized fields of a
2007 void req_capsule_set_size(struct req_capsule *pill,
2008 const struct req_msg_field *field,
2009 enum req_location loc, u32 size)
2011 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2013 if ((size != (u32)field->rmf_size) &&
2014 (field->rmf_size != -1) &&
2015 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2017 u32 rmf_size = (u32)field->rmf_size;
2019 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2020 (size % rmf_size != 0)) {
2021 CERROR("%s: array field size mismatch %u %% %u != 0 (%d)\n",
2022 field->rmf_name, size, rmf_size, loc);
2024 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2026 CERROR("%s: field size mismatch %u != %u (%d)\n",
2027 field->rmf_name, size, rmf_size, loc);
2032 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2034 EXPORT_SYMBOL(req_capsule_set_size);
2037 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2038 * for the given \a pill's given \a field.
2040 * NB: this function doesn't correspond with req_capsule_set_size(), which
2041 * actually sets the size in pill.rc_area[loc][offset], but this function
2042 * returns the message buflen[offset], maybe we should use another name.
2044 u32 req_capsule_get_size(const struct req_capsule *pill,
2045 const struct req_msg_field *field,
2046 enum req_location loc)
2048 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2050 return lustre_msg_buflen(__req_msg(pill, loc),
2051 __req_capsule_offset(pill, field, loc));
2053 EXPORT_SYMBOL(req_capsule_get_size);
2056 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2057 * given \a pill's request or reply (\a loc) given the field size recorded in
2058 * the \a pill's rc_area.
2060 * See also req_capsule_set_size().
2062 u32 req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2064 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2065 pill->rc_fmt->rf_fields[loc].nr,
2066 pill->rc_area[loc]);
2070 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2071 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2072 * PTLRPC request or reply given only an RQF (\a fmt).
2074 * This function should not be used for formats which contain variable size
2077 u32 req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2078 enum req_location loc)
2084 * This function should probably LASSERT() that fmt has no fields with
2085 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2086 * elements in the array there will ultimately be, but then, we could
2087 * assume that there will be at least one element, and that's just what
2090 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2094 for (; i < fmt->rf_fields[loc].nr; ++i)
2095 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2096 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2102 * Changes the format of an RPC.
2104 * The pill must already have been initialized, which means that it already has
2105 * a request format. The new format \a fmt must be an extension of the pill's
2106 * old format. Specifically: the new format must have as many request and reply
2107 * fields as the old one, and all fields shared by the old and new format must
2108 * be at least as large in the new format.
2110 * The new format's fields may be of different "type" than the old format, but
2111 * only for fields that are "opaque" blobs: fields which have a) have no
2112 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2113 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2114 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2115 * according to the key field. When the value, according to the key, contains a
2116 * structure (or array thereof) to be swabbed, the format should be changed to
2117 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2120 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2125 const struct req_format *old;
2127 LASSERT(pill->rc_fmt);
2128 LASSERT(__req_format_is_sane(fmt));
2132 * Sanity checking...
2134 for (i = 0; i < RCL_NR; ++i) {
2135 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2136 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2137 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2139 /* "opaque" fields can be transmogrified */
2140 if (!ofield->rmf_swabber &&
2141 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2142 (ofield->rmf_size == -1 ||
2143 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2145 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2148 * Last field in old format can be shorter than in new.
2150 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2151 FMT_FIELD(old, i, j)->rmf_size);
2156 EXPORT_SYMBOL(req_capsule_extend);
2159 * This function returns a non-zero value if the given \a field is present in
2160 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2163 int req_capsule_has_field(const struct req_capsule *pill,
2164 const struct req_msg_field *field,
2165 enum req_location loc)
2167 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2169 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2171 EXPORT_SYMBOL(req_capsule_has_field);
2174 * Returns a non-zero value if the given \a field is present in the given \a
2175 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2177 static int req_capsule_field_present(const struct req_capsule *pill,
2178 const struct req_msg_field *field,
2179 enum req_location loc)
2183 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2184 LASSERT(req_capsule_has_field(pill, field, loc));
2186 offset = __req_capsule_offset(pill, field, loc);
2187 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2191 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2192 * request or reply (\a loc).
2194 * This is not the opposite of req_capsule_extend().
2196 void req_capsule_shrink(struct req_capsule *pill,
2197 const struct req_msg_field *field,
2198 u32 newlen, enum req_location loc)
2200 const struct req_format *fmt;
2201 struct lustre_msg *msg;
2207 LASSERT(__req_format_is_sane(fmt));
2208 LASSERT(req_capsule_has_field(pill, field, loc));
2209 LASSERT(req_capsule_field_present(pill, field, loc));
2211 offset = __req_capsule_offset(pill, field, loc);
2213 msg = __req_msg(pill, loc);
2214 len = lustre_msg_buflen(msg, offset);
2215 LASSERTF(newlen <= len, "%s:%s, oldlen=%u, newlen=%u\n",
2216 fmt->rf_name, field->rmf_name, len, newlen);
2218 if (loc == RCL_CLIENT)
2219 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2222 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2225 EXPORT_SYMBOL(req_capsule_shrink);
2227 /* __REQ_LAYOUT_USER__ */