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, 2015, 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
53 #include <linux/module.h>
55 /* LUSTRE_VERSION_CODE */
56 #include "../include/lustre_ver.h"
58 #include "../include/obd_support.h"
59 /* lustre_swab_mdt_body */
60 #include "../include/lustre/lustre_idl.h"
61 /* obd2cli_tgt() (required by DEBUG_REQ()) */
62 #include "../include/obd.h"
64 /* __REQ_LAYOUT_USER__ */
66 /* struct ptlrpc_request, lustre_msg* */
67 #include "../include/lustre_req_layout.h"
68 #include "../include/lustre_acl.h"
69 #include "../include/lustre_debug.h"
72 * RQFs (see below) refer to two struct req_msg_field arrays describing the
73 * client request and server reply, respectively.
75 /* empty set of fields... for suitable definition of emptiness. */
76 static const struct req_msg_field *empty[] = {
80 static const struct req_msg_field *mgs_target_info_only[] = {
85 static const struct req_msg_field *mgs_set_info[] = {
90 static const struct req_msg_field *mgs_config_read_client[] = {
95 static const struct req_msg_field *mgs_config_read_server[] = {
100 static const struct req_msg_field *log_cancel_client[] = {
105 static const struct req_msg_field *mdt_body_only[] = {
110 static const struct req_msg_field *mdt_body_capa[] = {
116 static const struct req_msg_field *quotactl_only[] = {
121 static const struct req_msg_field *mdt_close_client[] = {
128 static const struct req_msg_field *mdt_release_close_client[] = {
136 static const struct req_msg_field *obd_statfs_server[] = {
141 static const struct req_msg_field *seq_query_client[] = {
147 static const struct req_msg_field *seq_query_server[] = {
152 static const struct req_msg_field *fld_query_client[] = {
158 static const struct req_msg_field *fld_query_server[] = {
163 static const struct req_msg_field *fld_read_client[] = {
168 static const struct req_msg_field *fld_read_server[] = {
173 static const struct req_msg_field *mds_getattr_name_client[] = {
180 static const struct req_msg_field *mds_reint_client[] = {
185 static const struct req_msg_field *mds_reint_create_client[] = {
192 static const struct req_msg_field *mds_reint_create_slave_client[] = {
201 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
210 static const struct req_msg_field *mds_reint_create_sym_client[] = {
219 static const struct req_msg_field *mds_reint_open_client[] = {
228 static const struct req_msg_field *mds_reint_open_server[] = {
237 static const struct req_msg_field *mds_reint_unlink_client[] = {
245 static const struct req_msg_field *mds_reint_link_client[] = {
254 static const struct req_msg_field *mds_reint_rename_client[] = {
264 static const struct req_msg_field *mds_last_unlink_server[] = {
273 static const struct req_msg_field *mds_reint_setattr_client[] = {
283 static const struct req_msg_field *mds_reint_setxattr_client[] = {
292 static const struct req_msg_field *mdt_swap_layouts[] = {
301 static const struct req_msg_field *obd_connect_client[] = {
309 static const struct req_msg_field *obd_connect_server[] = {
314 static const struct req_msg_field *obd_set_info_client[] = {
320 static const struct req_msg_field *ost_grant_shrink_client[] = {
326 static const struct req_msg_field *mds_getinfo_client[] = {
332 static const struct req_msg_field *mds_getinfo_server[] = {
337 static const struct req_msg_field *ldlm_enqueue_client[] = {
342 static const struct req_msg_field *ldlm_enqueue_server[] = {
347 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
353 static const struct req_msg_field *ldlm_cp_callback_client[] = {
359 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
365 static const struct req_msg_field *ldlm_gl_callback_server[] = {
370 static const struct req_msg_field *ldlm_intent_basic_client[] = {
376 static const struct req_msg_field *ldlm_intent_client[] = {
383 static const struct req_msg_field *ldlm_intent_server[] = {
391 static const struct req_msg_field *ldlm_intent_layout_client[] = {
396 &RMF_EADATA /* for new layout to be set up */
399 static const struct req_msg_field *ldlm_intent_open_server[] = {
409 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
413 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
418 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
427 static const struct req_msg_field *ldlm_intent_create_client[] = {
431 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
437 static const struct req_msg_field *ldlm_intent_open_client[] = {
441 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
448 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
452 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
457 static const struct req_msg_field *ldlm_intent_getxattr_client[] = {
465 static const struct req_msg_field *ldlm_intent_getxattr_server[] = {
470 &RMF_ACL, /* for req_capsule_extend/mdt_intent_policy */
476 static const struct req_msg_field *mds_getxattr_client[] = {
484 static const struct req_msg_field *mds_getxattr_server[] = {
490 static const struct req_msg_field *mds_getattr_server[] = {
499 static const struct req_msg_field *mds_setattr_server[] = {
508 static const struct req_msg_field *llog_origin_handle_create_client[] = {
514 static const struct req_msg_field *llogd_body_only[] = {
519 static const struct req_msg_field *llog_log_hdr_only[] = {
524 static const struct req_msg_field *llogd_conn_body_only[] = {
529 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
535 static const struct req_msg_field *ost_body_only[] = {
540 static const struct req_msg_field *ost_body_capa[] = {
546 static const struct req_msg_field *ost_destroy_client[] = {
553 static const struct req_msg_field *ost_brw_client[] = {
561 static const struct req_msg_field *ost_brw_read_server[] = {
566 static const struct req_msg_field *ost_brw_write_server[] = {
572 static const struct req_msg_field *ost_get_info_generic_server[] = {
577 static const struct req_msg_field *ost_get_info_generic_client[] = {
582 static const struct req_msg_field *ost_get_last_id_server[] = {
587 static const struct req_msg_field *ost_get_last_fid_client[] = {
593 static const struct req_msg_field *ost_get_last_fid_server[] = {
598 static const struct req_msg_field *ost_get_fiemap_client[] = {
604 static const struct req_msg_field *ost_get_fiemap_server[] = {
609 static const struct req_msg_field *mdt_hsm_progress[] = {
612 &RMF_MDS_HSM_PROGRESS,
615 static const struct req_msg_field *mdt_hsm_ct_register[] = {
618 &RMF_MDS_HSM_ARCHIVE,
621 static const struct req_msg_field *mdt_hsm_ct_unregister[] = {
626 static const struct req_msg_field *mdt_hsm_action_server[] = {
629 &RMF_MDS_HSM_CURRENT_ACTION,
632 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
638 static const struct req_msg_field *mdt_hsm_state_set[] = {
645 static const struct req_msg_field *mdt_hsm_request[] = {
648 &RMF_MDS_HSM_REQUEST,
649 &RMF_MDS_HSM_USER_ITEM,
653 static struct req_format *req_formats[] = {
659 &RQF_MGS_CONFIG_READ,
669 &RQF_MDS_GETATTR_NAME,
673 &RQF_MDS_RELEASE_CLOSE,
679 &RQF_MDS_DONE_WRITING,
681 &RQF_MDS_REINT_CREATE,
682 &RQF_MDS_REINT_CREATE_RMT_ACL,
683 &RQF_MDS_REINT_CREATE_SLAVE,
684 &RQF_MDS_REINT_CREATE_SYM,
686 &RQF_MDS_REINT_UNLINK,
688 &RQF_MDS_REINT_RENAME,
689 &RQF_MDS_REINT_SETATTR,
690 &RQF_MDS_REINT_SETXATTR,
693 &RQF_MDS_HSM_PROGRESS,
694 &RQF_MDS_HSM_CT_REGISTER,
695 &RQF_MDS_HSM_CT_UNREGISTER,
696 &RQF_MDS_HSM_STATE_GET,
697 &RQF_MDS_HSM_STATE_SET,
699 &RQF_MDS_HSM_REQUEST,
700 &RQF_MDS_SWAP_LAYOUTS,
715 &RQF_OST_SET_GRANT_INFO,
717 &RQF_OST_GET_INFO_LAST_ID,
718 &RQF_OST_GET_INFO_LAST_FID,
719 &RQF_OST_SET_INFO_LAST_FID,
720 &RQF_OST_GET_INFO_FIEMAP,
722 &RQF_LDLM_ENQUEUE_LVB,
726 &RQF_LDLM_CP_CALLBACK,
727 &RQF_LDLM_BL_CALLBACK,
728 &RQF_LDLM_GL_CALLBACK,
729 &RQF_LDLM_GL_DESC_CALLBACK,
731 &RQF_LDLM_INTENT_BASIC,
732 &RQF_LDLM_INTENT_LAYOUT,
733 &RQF_LDLM_INTENT_GETATTR,
734 &RQF_LDLM_INTENT_OPEN,
735 &RQF_LDLM_INTENT_CREATE,
736 &RQF_LDLM_INTENT_UNLINK,
737 &RQF_LDLM_INTENT_GETXATTR,
739 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
740 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
741 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
742 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
743 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
744 &RQF_LLOG_ORIGIN_CONNECT,
748 struct req_msg_field {
749 const __u32 rmf_flags;
750 const char *rmf_name;
752 * Field length. (-1) means "variable length". If the
753 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
754 * but the actual size must be a whole multiple of \a rmf_size.
757 void (*rmf_swabber)(void *);
758 void (*rmf_dumper)(void *);
759 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
764 * The field is a string, must be NUL-terminated.
766 RMF_F_STRING = BIT(0),
768 * The field's buffer size need not match the declared \a rmf_size.
770 RMF_F_NO_SIZE_CHECK = BIT(1),
772 * The field's buffer size must be a whole multiple of the declared \a
773 * rmf_size and the \a rmf_swabber function must work on the declared \a
774 * rmf_size worth of bytes.
776 RMF_F_STRUCT_ARRAY = BIT(2)
784 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
785 .rmf_name = (name), \
786 .rmf_flags = (flags), \
787 .rmf_size = (size), \
788 .rmf_swabber = (void (*)(void *))(swabber), \
789 .rmf_dumper = (void (*)(void *))(dumper) \
792 struct req_msg_field RMF_GENERIC_DATA =
793 DEFINE_MSGF("generic_data", 0,
795 EXPORT_SYMBOL(RMF_GENERIC_DATA);
797 struct req_msg_field RMF_MGS_TARGET_INFO =
798 DEFINE_MSGF("mgs_target_info", 0,
799 sizeof(struct mgs_target_info),
800 lustre_swab_mgs_target_info, NULL);
801 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
803 struct req_msg_field RMF_MGS_SEND_PARAM =
804 DEFINE_MSGF("mgs_send_param", 0,
805 sizeof(struct mgs_send_param),
807 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
809 struct req_msg_field RMF_MGS_CONFIG_BODY =
810 DEFINE_MSGF("mgs_config_read request", 0,
811 sizeof(struct mgs_config_body),
812 lustre_swab_mgs_config_body, NULL);
813 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
815 struct req_msg_field RMF_MGS_CONFIG_RES =
816 DEFINE_MSGF("mgs_config_read reply ", 0,
817 sizeof(struct mgs_config_res),
818 lustre_swab_mgs_config_res, NULL);
819 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
821 struct req_msg_field RMF_U32 =
822 DEFINE_MSGF("generic u32", 0,
823 sizeof(__u32), lustre_swab_generic_32s, NULL);
824 EXPORT_SYMBOL(RMF_U32);
826 struct req_msg_field RMF_SETINFO_VAL =
827 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
828 EXPORT_SYMBOL(RMF_SETINFO_VAL);
830 struct req_msg_field RMF_GETINFO_KEY =
831 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
832 EXPORT_SYMBOL(RMF_GETINFO_KEY);
834 struct req_msg_field RMF_GETINFO_VALLEN =
835 DEFINE_MSGF("getinfo_vallen", 0,
836 sizeof(__u32), lustre_swab_generic_32s, NULL);
837 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
839 struct req_msg_field RMF_GETINFO_VAL =
840 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
841 EXPORT_SYMBOL(RMF_GETINFO_VAL);
843 struct req_msg_field RMF_SEQ_OPC =
844 DEFINE_MSGF("seq_query_opc", 0,
845 sizeof(__u32), lustre_swab_generic_32s, NULL);
846 EXPORT_SYMBOL(RMF_SEQ_OPC);
848 struct req_msg_field RMF_SEQ_RANGE =
849 DEFINE_MSGF("seq_query_range", 0,
850 sizeof(struct lu_seq_range),
851 lustre_swab_lu_seq_range, NULL);
852 EXPORT_SYMBOL(RMF_SEQ_RANGE);
854 struct req_msg_field RMF_FLD_OPC =
855 DEFINE_MSGF("fld_query_opc", 0,
856 sizeof(__u32), lustre_swab_generic_32s, NULL);
857 EXPORT_SYMBOL(RMF_FLD_OPC);
859 struct req_msg_field RMF_FLD_MDFLD =
860 DEFINE_MSGF("fld_query_mdfld", 0,
861 sizeof(struct lu_seq_range),
862 lustre_swab_lu_seq_range, NULL);
863 EXPORT_SYMBOL(RMF_FLD_MDFLD);
865 struct req_msg_field RMF_MDT_BODY =
866 DEFINE_MSGF("mdt_body", 0,
867 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
868 EXPORT_SYMBOL(RMF_MDT_BODY);
870 struct req_msg_field RMF_OBD_QUOTACTL =
871 DEFINE_MSGF("obd_quotactl", 0,
872 sizeof(struct obd_quotactl),
873 lustre_swab_obd_quotactl, NULL);
874 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
876 struct req_msg_field RMF_MDT_EPOCH =
877 DEFINE_MSGF("mdt_ioepoch", 0,
878 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
879 EXPORT_SYMBOL(RMF_MDT_EPOCH);
881 struct req_msg_field RMF_PTLRPC_BODY =
882 DEFINE_MSGF("ptlrpc_body", 0,
883 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
884 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
886 struct req_msg_field RMF_CLOSE_DATA =
887 DEFINE_MSGF("data_version", 0,
888 sizeof(struct close_data), lustre_swab_close_data, NULL);
889 EXPORT_SYMBOL(RMF_CLOSE_DATA);
891 struct req_msg_field RMF_OBD_STATFS =
892 DEFINE_MSGF("obd_statfs", 0,
893 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
894 EXPORT_SYMBOL(RMF_OBD_STATFS);
896 struct req_msg_field RMF_SETINFO_KEY =
897 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
898 EXPORT_SYMBOL(RMF_SETINFO_KEY);
900 struct req_msg_field RMF_NAME =
901 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
902 EXPORT_SYMBOL(RMF_NAME);
904 struct req_msg_field RMF_SYMTGT =
905 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
906 EXPORT_SYMBOL(RMF_SYMTGT);
908 struct req_msg_field RMF_TGTUUID =
909 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
911 EXPORT_SYMBOL(RMF_TGTUUID);
913 struct req_msg_field RMF_CLUUID =
914 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
916 EXPORT_SYMBOL(RMF_CLUUID);
918 struct req_msg_field RMF_STRING =
919 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
920 EXPORT_SYMBOL(RMF_STRING);
922 struct req_msg_field RMF_LLOGD_BODY =
923 DEFINE_MSGF("llogd_body", 0,
924 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
925 EXPORT_SYMBOL(RMF_LLOGD_BODY);
927 struct req_msg_field RMF_LLOG_LOG_HDR =
928 DEFINE_MSGF("llog_log_hdr", 0,
929 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
930 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
932 struct req_msg_field RMF_LLOGD_CONN_BODY =
933 DEFINE_MSGF("llogd_conn_body", 0,
934 sizeof(struct llogd_conn_body),
935 lustre_swab_llogd_conn_body, NULL);
936 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
939 * connection handle received in MDS_CONNECT request.
941 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
942 * that the client does not interpret at all.
944 struct req_msg_field RMF_CONN =
945 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
946 EXPORT_SYMBOL(RMF_CONN);
948 struct req_msg_field RMF_CONNECT_DATA =
950 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
951 sizeof(struct obd_connect_data),
952 lustre_swab_connect, NULL);
953 EXPORT_SYMBOL(RMF_CONNECT_DATA);
955 struct req_msg_field RMF_DLM_REQ =
956 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
957 sizeof(struct ldlm_request),
958 lustre_swab_ldlm_request, NULL);
959 EXPORT_SYMBOL(RMF_DLM_REQ);
961 struct req_msg_field RMF_DLM_REP =
962 DEFINE_MSGF("dlm_rep", 0,
963 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
964 EXPORT_SYMBOL(RMF_DLM_REP);
966 struct req_msg_field RMF_LDLM_INTENT =
967 DEFINE_MSGF("ldlm_intent", 0,
968 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
969 EXPORT_SYMBOL(RMF_LDLM_INTENT);
971 struct req_msg_field RMF_DLM_LVB =
972 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
973 EXPORT_SYMBOL(RMF_DLM_LVB);
975 struct req_msg_field RMF_DLM_GL_DESC =
976 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
977 lustre_swab_gl_desc, NULL);
978 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
980 struct req_msg_field RMF_MDT_MD =
981 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
982 EXPORT_SYMBOL(RMF_MDT_MD);
984 struct req_msg_field RMF_REC_REINT =
985 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
986 lustre_swab_mdt_rec_reint, NULL);
987 EXPORT_SYMBOL(RMF_REC_REINT);
989 /* FIXME: this length should be defined as a macro */
990 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
992 EXPORT_SYMBOL(RMF_EADATA);
994 struct req_msg_field RMF_EAVALS = DEFINE_MSGF("eavals", 0, -1, NULL, NULL);
995 EXPORT_SYMBOL(RMF_EAVALS);
997 struct req_msg_field RMF_ACL =
998 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
999 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
1000 EXPORT_SYMBOL(RMF_ACL);
1002 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
1003 struct req_msg_field RMF_LOGCOOKIES =
1004 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
1005 sizeof(struct llog_cookie), NULL, NULL);
1006 EXPORT_SYMBOL(RMF_LOGCOOKIES);
1008 struct req_msg_field RMF_CAPA1 =
1009 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1010 lustre_swab_lustre_capa, NULL);
1011 EXPORT_SYMBOL(RMF_CAPA1);
1013 struct req_msg_field RMF_CAPA2 =
1014 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1015 lustre_swab_lustre_capa, NULL);
1016 EXPORT_SYMBOL(RMF_CAPA2);
1018 struct req_msg_field RMF_LAYOUT_INTENT =
1019 DEFINE_MSGF("layout_intent", 0,
1020 sizeof(struct layout_intent), lustre_swab_layout_intent,
1022 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1025 * OST request field.
1027 struct req_msg_field RMF_OST_BODY =
1028 DEFINE_MSGF("ost_body", 0,
1029 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1030 EXPORT_SYMBOL(RMF_OST_BODY);
1032 struct req_msg_field RMF_OBD_IOOBJ =
1033 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1034 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1035 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1037 struct req_msg_field RMF_NIOBUF_REMOTE =
1038 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1039 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1041 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1043 struct req_msg_field RMF_RCS =
1044 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1045 lustre_swab_generic_32s, dump_rcs);
1046 EXPORT_SYMBOL(RMF_RCS);
1048 struct req_msg_field RMF_EAVALS_LENS =
1049 DEFINE_MSGF("eavals_lens", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1050 lustre_swab_generic_32s, NULL);
1051 EXPORT_SYMBOL(RMF_EAVALS_LENS);
1053 struct req_msg_field RMF_OBD_ID =
1054 DEFINE_MSGF("u64", 0,
1055 sizeof(u64), lustre_swab_ost_last_id, NULL);
1056 EXPORT_SYMBOL(RMF_OBD_ID);
1058 struct req_msg_field RMF_FID =
1059 DEFINE_MSGF("fid", 0,
1060 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1061 EXPORT_SYMBOL(RMF_FID);
1063 struct req_msg_field RMF_OST_ID =
1064 DEFINE_MSGF("ost_id", 0,
1065 sizeof(struct ost_id), lustre_swab_ost_id, NULL);
1066 EXPORT_SYMBOL(RMF_OST_ID);
1068 struct req_msg_field RMF_FIEMAP_KEY =
1069 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1070 lustre_swab_fiemap, NULL);
1071 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1073 struct req_msg_field RMF_FIEMAP_VAL =
1074 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1075 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1077 struct req_msg_field RMF_HSM_USER_STATE =
1078 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1079 lustre_swab_hsm_user_state, NULL);
1080 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1082 struct req_msg_field RMF_HSM_STATE_SET =
1083 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1084 lustre_swab_hsm_state_set, NULL);
1085 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1087 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1088 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1089 lustre_swab_hsm_progress_kernel, NULL);
1090 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1092 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1093 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1094 lustre_swab_hsm_current_action, NULL);
1095 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1097 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1098 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1099 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1101 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1103 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1104 DEFINE_MSGF("hsm_archive", 0,
1105 sizeof(__u32), lustre_swab_generic_32s, NULL);
1106 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1108 struct req_msg_field RMF_MDS_HSM_REQUEST =
1109 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1110 lustre_swab_hsm_request, NULL);
1111 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1113 struct req_msg_field RMF_SWAP_LAYOUTS =
1114 DEFINE_MSGF("swap_layouts", 0, sizeof(struct mdc_swap_layouts),
1115 lustre_swab_swap_layouts, NULL);
1116 EXPORT_SYMBOL(RMF_SWAP_LAYOUTS);
1122 const char *rf_name;
1126 const struct req_msg_field **d;
1127 } rf_fields[RCL_NR];
1130 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1144 #define DEFINE_REQ_FMT0(name, client, server) \
1145 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1147 struct req_format RQF_OBD_PING =
1148 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1149 EXPORT_SYMBOL(RQF_OBD_PING);
1151 struct req_format RQF_OBD_SET_INFO =
1152 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1153 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1155 struct req_format RQF_SEC_CTX =
1156 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1157 EXPORT_SYMBOL(RQF_SEC_CTX);
1159 struct req_format RQF_MGS_TARGET_REG =
1160 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1161 mgs_target_info_only);
1162 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1164 struct req_format RQF_MGS_SET_INFO =
1165 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1167 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1169 struct req_format RQF_MGS_CONFIG_READ =
1170 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1171 mgs_config_read_server);
1172 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1174 struct req_format RQF_SEQ_QUERY =
1175 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1176 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1178 struct req_format RQF_FLD_QUERY =
1179 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1180 EXPORT_SYMBOL(RQF_FLD_QUERY);
1182 struct req_format RQF_FLD_READ =
1183 DEFINE_REQ_FMT0("FLD_READ", fld_read_client, fld_read_server);
1184 EXPORT_SYMBOL(RQF_FLD_READ);
1186 struct req_format RQF_LOG_CANCEL =
1187 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1188 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1190 struct req_format RQF_MDS_QUOTACHECK =
1191 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1192 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1194 struct req_format RQF_OST_QUOTACHECK =
1195 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1196 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1198 struct req_format RQF_MDS_QUOTACTL =
1199 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1200 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1202 struct req_format RQF_OST_QUOTACTL =
1203 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1204 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1206 struct req_format RQF_QC_CALLBACK =
1207 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1208 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1210 struct req_format RQF_MDS_GETSTATUS =
1211 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1212 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1214 struct req_format RQF_MDS_STATFS =
1215 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1216 EXPORT_SYMBOL(RQF_MDS_STATFS);
1218 struct req_format RQF_MDS_SYNC =
1219 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1220 EXPORT_SYMBOL(RQF_MDS_SYNC);
1222 struct req_format RQF_MDS_GETATTR =
1223 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1224 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1226 struct req_format RQF_MDS_GETXATTR =
1227 DEFINE_REQ_FMT0("MDS_GETXATTR",
1228 mds_getxattr_client, mds_getxattr_server);
1229 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1231 struct req_format RQF_MDS_GETATTR_NAME =
1232 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1233 mds_getattr_name_client, mds_getattr_server);
1234 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1236 struct req_format RQF_MDS_REINT =
1237 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1238 EXPORT_SYMBOL(RQF_MDS_REINT);
1240 struct req_format RQF_MDS_REINT_CREATE =
1241 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1242 mds_reint_create_client, mdt_body_capa);
1243 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1245 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1246 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1247 mds_reint_create_rmt_acl_client, mdt_body_capa);
1248 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1250 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1251 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1252 mds_reint_create_slave_client, mdt_body_capa);
1253 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1255 struct req_format RQF_MDS_REINT_CREATE_SYM =
1256 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1257 mds_reint_create_sym_client, mdt_body_capa);
1258 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1260 struct req_format RQF_MDS_REINT_OPEN =
1261 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1262 mds_reint_open_client, mds_reint_open_server);
1263 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1265 struct req_format RQF_MDS_REINT_UNLINK =
1266 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1267 mds_last_unlink_server);
1268 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1270 struct req_format RQF_MDS_REINT_LINK =
1271 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1272 mds_reint_link_client, mdt_body_only);
1273 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1275 struct req_format RQF_MDS_REINT_RENAME =
1276 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1277 mds_last_unlink_server);
1278 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1280 struct req_format RQF_MDS_REINT_SETATTR =
1281 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1282 mds_reint_setattr_client, mds_setattr_server);
1283 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1285 struct req_format RQF_MDS_REINT_SETXATTR =
1286 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1287 mds_reint_setxattr_client, mdt_body_only);
1288 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1290 struct req_format RQF_MDS_CONNECT =
1291 DEFINE_REQ_FMT0("MDS_CONNECT",
1292 obd_connect_client, obd_connect_server);
1293 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1295 struct req_format RQF_MDS_DISCONNECT =
1296 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1297 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1299 struct req_format RQF_MDS_GET_INFO =
1300 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1301 mds_getinfo_server);
1302 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1304 struct req_format RQF_LDLM_ENQUEUE =
1305 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1306 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1307 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1309 struct req_format RQF_LDLM_ENQUEUE_LVB =
1310 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1311 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1312 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1314 struct req_format RQF_LDLM_CONVERT =
1315 DEFINE_REQ_FMT0("LDLM_CONVERT",
1316 ldlm_enqueue_client, ldlm_enqueue_server);
1317 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1319 struct req_format RQF_LDLM_CANCEL =
1320 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1321 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1323 struct req_format RQF_LDLM_CALLBACK =
1324 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1325 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1327 struct req_format RQF_LDLM_CP_CALLBACK =
1328 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1329 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1331 struct req_format RQF_LDLM_BL_CALLBACK =
1332 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1333 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1335 struct req_format RQF_LDLM_GL_CALLBACK =
1336 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1337 ldlm_gl_callback_server);
1338 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1340 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1341 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1342 ldlm_gl_callback_server);
1343 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1345 struct req_format RQF_LDLM_INTENT_BASIC =
1346 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1347 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1348 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1350 struct req_format RQF_LDLM_INTENT =
1351 DEFINE_REQ_FMT0("LDLM_INTENT",
1352 ldlm_intent_client, ldlm_intent_server);
1353 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1355 struct req_format RQF_LDLM_INTENT_LAYOUT =
1356 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1357 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1358 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1360 struct req_format RQF_LDLM_INTENT_GETATTR =
1361 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1362 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1363 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1365 struct req_format RQF_LDLM_INTENT_OPEN =
1366 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1367 ldlm_intent_open_client, ldlm_intent_open_server);
1368 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1370 struct req_format RQF_LDLM_INTENT_CREATE =
1371 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1372 ldlm_intent_create_client, ldlm_intent_getattr_server);
1373 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1375 struct req_format RQF_LDLM_INTENT_UNLINK =
1376 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1377 ldlm_intent_unlink_client, ldlm_intent_server);
1378 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1380 struct req_format RQF_LDLM_INTENT_GETXATTR =
1381 DEFINE_REQ_FMT0("LDLM_INTENT_GETXATTR",
1382 ldlm_intent_getxattr_client,
1383 ldlm_intent_getxattr_server);
1384 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETXATTR);
1386 struct req_format RQF_MDS_CLOSE =
1387 DEFINE_REQ_FMT0("MDS_CLOSE",
1388 mdt_close_client, mds_last_unlink_server);
1389 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1391 struct req_format RQF_MDS_RELEASE_CLOSE =
1392 DEFINE_REQ_FMT0("MDS_CLOSE",
1393 mdt_release_close_client, mds_last_unlink_server);
1394 EXPORT_SYMBOL(RQF_MDS_RELEASE_CLOSE);
1396 struct req_format RQF_MDS_PIN =
1397 DEFINE_REQ_FMT0("MDS_PIN",
1398 mdt_body_capa, mdt_body_only);
1399 EXPORT_SYMBOL(RQF_MDS_PIN);
1401 struct req_format RQF_MDS_UNPIN =
1402 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1403 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1405 struct req_format RQF_MDS_DONE_WRITING =
1406 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1407 mdt_close_client, mdt_body_only);
1408 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1410 struct req_format RQF_MDS_READPAGE =
1411 DEFINE_REQ_FMT0("MDS_READPAGE",
1412 mdt_body_capa, mdt_body_only);
1413 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1415 struct req_format RQF_MDS_HSM_ACTION =
1416 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1417 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1419 struct req_format RQF_MDS_HSM_PROGRESS =
1420 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1421 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1423 struct req_format RQF_MDS_HSM_CT_REGISTER =
1424 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1425 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1427 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1428 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", mdt_hsm_ct_unregister, empty);
1429 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1431 struct req_format RQF_MDS_HSM_STATE_GET =
1432 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1433 mdt_body_capa, mdt_hsm_state_get_server);
1434 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1436 struct req_format RQF_MDS_HSM_STATE_SET =
1437 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1438 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1440 struct req_format RQF_MDS_HSM_REQUEST =
1441 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1442 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1444 struct req_format RQF_MDS_SWAP_LAYOUTS =
1445 DEFINE_REQ_FMT0("MDS_SWAP_LAYOUTS",
1446 mdt_swap_layouts, empty);
1447 EXPORT_SYMBOL(RQF_MDS_SWAP_LAYOUTS);
1449 /* This is for split */
1450 struct req_format RQF_MDS_WRITEPAGE =
1451 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1452 mdt_body_capa, mdt_body_only);
1453 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1455 struct req_format RQF_MDS_IS_SUBDIR =
1456 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1457 mdt_body_only, mdt_body_only);
1458 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1460 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1461 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1462 llog_origin_handle_create_client, llogd_body_only);
1463 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1465 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1466 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1467 llogd_body_only, llogd_body_only);
1468 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1470 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1471 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1472 llogd_body_only, llog_origin_handle_next_block_server);
1473 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1475 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1476 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1477 llogd_body_only, llog_origin_handle_next_block_server);
1478 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1480 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1481 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1482 llogd_body_only, llog_log_hdr_only);
1483 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1485 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1486 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1487 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1489 struct req_format RQF_CONNECT =
1490 DEFINE_REQ_FMT0("CONNECT", obd_connect_client, obd_connect_server);
1491 EXPORT_SYMBOL(RQF_CONNECT);
1493 struct req_format RQF_OST_CONNECT =
1494 DEFINE_REQ_FMT0("OST_CONNECT",
1495 obd_connect_client, obd_connect_server);
1496 EXPORT_SYMBOL(RQF_OST_CONNECT);
1498 struct req_format RQF_OST_DISCONNECT =
1499 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1500 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1502 struct req_format RQF_OST_GETATTR =
1503 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1504 EXPORT_SYMBOL(RQF_OST_GETATTR);
1506 struct req_format RQF_OST_SETATTR =
1507 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1508 EXPORT_SYMBOL(RQF_OST_SETATTR);
1510 struct req_format RQF_OST_CREATE =
1511 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1512 EXPORT_SYMBOL(RQF_OST_CREATE);
1514 struct req_format RQF_OST_PUNCH =
1515 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1516 EXPORT_SYMBOL(RQF_OST_PUNCH);
1518 struct req_format RQF_OST_SYNC =
1519 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1520 EXPORT_SYMBOL(RQF_OST_SYNC);
1522 struct req_format RQF_OST_DESTROY =
1523 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1524 EXPORT_SYMBOL(RQF_OST_DESTROY);
1526 struct req_format RQF_OST_BRW_READ =
1527 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1528 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1530 struct req_format RQF_OST_BRW_WRITE =
1531 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1532 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1534 struct req_format RQF_OST_STATFS =
1535 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1536 EXPORT_SYMBOL(RQF_OST_STATFS);
1538 struct req_format RQF_OST_SET_GRANT_INFO =
1539 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1541 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1543 struct req_format RQF_OST_GET_INFO =
1544 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1545 ost_get_info_generic_server);
1546 EXPORT_SYMBOL(RQF_OST_GET_INFO);
1548 struct req_format RQF_OST_GET_INFO_LAST_ID =
1549 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1550 ost_get_last_id_server);
1551 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1553 struct req_format RQF_OST_GET_INFO_LAST_FID =
1554 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", ost_get_last_fid_client,
1555 ost_get_last_fid_server);
1556 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1558 struct req_format RQF_OST_SET_INFO_LAST_FID =
1559 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1561 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1563 struct req_format RQF_OST_GET_INFO_FIEMAP =
1564 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1565 ost_get_fiemap_server);
1566 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1568 #if !defined(__REQ_LAYOUT_USER__)
1570 /* Convenience macro */
1571 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1574 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1575 * field of RQFs and the \a rmf_offset field of RMFs.
1577 int req_layout_init(void)
1582 struct req_format *rf = NULL;
1584 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1585 rf = req_formats[i];
1587 for (j = 0; j < RCL_NR; ++j) {
1588 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1589 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1590 struct req_msg_field *field;
1592 field = (typeof(field))rf->rf_fields[j].d[k];
1593 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1594 || field->rmf_size > 0);
1595 LASSERT(field->rmf_offset[i][j] == 0);
1597 * k + 1 to detect unused format/field
1600 field->rmf_offset[i][j] = k + 1;
1606 EXPORT_SYMBOL(req_layout_init);
1608 void req_layout_fini(void)
1611 EXPORT_SYMBOL(req_layout_fini);
1614 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1616 * Actual/expected field sizes are set elsewhere in functions in this file:
1617 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1618 * req_capsule_msg_size(). The \a rc_area information is used by.
1619 * ptlrpc_request_set_replen().
1621 static void req_capsule_init_area(struct req_capsule *pill)
1625 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1626 pill->rc_area[RCL_CLIENT][i] = -1;
1627 pill->rc_area[RCL_SERVER][i] = -1;
1632 * Initialize a pill.
1634 * The \a location indicates whether the caller is executing on the client side
1635 * (RCL_CLIENT) or server side (RCL_SERVER)..
1637 void req_capsule_init(struct req_capsule *pill,
1638 struct ptlrpc_request *req,
1639 enum req_location location)
1641 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1644 * Today all capsules are embedded in ptlrpc_request structs,
1645 * but just in case that ever isn't the case, we don't reach
1646 * into req unless req != NULL and pill is the one embedded in
1649 * The req->rq_pill_init flag makes it safe to initialize a pill
1650 * twice, which might happen in the OST paths as a result of the
1651 * high-priority RPC queue getting peeked at before ost_handle()
1652 * handles an OST RPC.
1654 if (req && pill == &req->rq_pill && req->rq_pill_init)
1657 memset(pill, 0, sizeof(*pill));
1659 pill->rc_loc = location;
1660 req_capsule_init_area(pill);
1662 if (req && pill == &req->rq_pill)
1663 req->rq_pill_init = 1;
1665 EXPORT_SYMBOL(req_capsule_init);
1667 void req_capsule_fini(struct req_capsule *pill)
1670 EXPORT_SYMBOL(req_capsule_fini);
1672 static int __req_format_is_sane(const struct req_format *fmt)
1675 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1676 req_formats[fmt->rf_idx] == fmt;
1679 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1680 enum req_location loc)
1682 struct ptlrpc_request *req;
1685 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1689 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1690 * (see req_capsule_extend()).
1692 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1694 LASSERT(!pill->rc_fmt || pill->rc_fmt == fmt);
1695 LASSERT(__req_format_is_sane(fmt));
1699 EXPORT_SYMBOL(req_capsule_set);
1702 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1705 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1706 * variable-sized fields. The field sizes come from the declared \a rmf_size
1707 * field of a \a pill's \a rc_fmt's RMF's.
1709 int req_capsule_filled_sizes(struct req_capsule *pill,
1710 enum req_location loc)
1712 const struct req_format *fmt = pill->rc_fmt;
1715 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1716 if (pill->rc_area[loc][i] == -1) {
1717 pill->rc_area[loc][i] =
1718 fmt->rf_fields[loc].d[i]->rmf_size;
1719 if (pill->rc_area[loc][i] == -1) {
1721 * Skip the following fields.
1723 * If this LASSERT() trips then you're missing a
1724 * call to req_capsule_set_size().
1726 LASSERT(loc != RCL_SERVER);
1733 EXPORT_SYMBOL(req_capsule_filled_sizes);
1736 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1738 * This function uses the \a pill's \a rc_area as filled in by
1739 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1742 int req_capsule_server_pack(struct req_capsule *pill)
1744 const struct req_format *fmt;
1748 LASSERT(pill->rc_loc == RCL_SERVER);
1752 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1753 rc = lustre_pack_reply(pill->rc_req, count,
1754 pill->rc_area[RCL_SERVER], NULL);
1756 DEBUG_REQ(D_ERROR, pill->rc_req,
1757 "Cannot pack %d fields in format `%s': ",
1758 count, fmt->rf_name);
1762 EXPORT_SYMBOL(req_capsule_server_pack);
1765 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1766 * corresponding to the given RMF (\a field).
1768 static int __req_capsule_offset(const struct req_capsule *pill,
1769 const struct req_msg_field *field,
1770 enum req_location loc)
1774 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1775 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n", pill->rc_fmt->rf_name,
1776 field->rmf_name, offset, loc);
1779 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1784 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1789 swabber_dumper_helper(struct req_capsule *pill,
1790 const struct req_msg_field *field,
1791 enum req_location loc,
1793 void *value, int len, int dump, void (*swabber)(void *))
1799 int inout = loc == RCL_CLIENT;
1801 swabber = swabber ?: field->rmf_swabber;
1803 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1809 if (!field->rmf_dumper)
1812 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1814 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1815 do_swab ? "unswabbed " : "", field->rmf_name);
1816 field->rmf_dumper(value);
1821 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1822 if (dump && field->rmf_dumper) {
1823 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s follows\n",
1825 field->rmf_dumper(value);
1832 * We're swabbing an array; swabber() swabs a single array element, so
1833 * swab every element.
1835 LASSERT((len % field->rmf_size) == 0);
1836 for (p = value, i = 0, n = len / field->rmf_size;
1838 i++, p += field->rmf_size) {
1840 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, element %d follows\n",
1841 do_swab ? "unswabbed " : "", field->rmf_name, i);
1842 field->rmf_dumper(p);
1848 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, element %d follows\n",
1849 field->rmf_name, i);
1850 field->rmf_dumper(value);
1854 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1858 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1859 * corresponding to the given RMF (\a field).
1861 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1862 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1863 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1864 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1865 * element of the array swabbed.
1867 static void *__req_capsule_get(struct req_capsule *pill,
1868 const struct req_msg_field *field,
1869 enum req_location loc,
1870 void (*swabber)(void *),
1873 const struct req_format *fmt;
1874 struct lustre_msg *msg;
1879 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1881 static const char *rcl_names[RCL_NR] = {
1882 [RCL_CLIENT] = "client",
1883 [RCL_SERVER] = "server"
1888 LASSERT(fmt != LP_POISON);
1889 LASSERT(__req_format_is_sane(fmt));
1891 offset = __req_capsule_offset(pill, field, loc);
1893 msg = __req_msg(pill, loc);
1896 getter = (field->rmf_flags & RMF_F_STRING) ?
1897 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1899 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1901 * We've already asserted that field->rmf_size > 0 in
1902 * req_layout_init().
1904 len = lustre_msg_buflen(msg, offset);
1905 if ((len % field->rmf_size) != 0) {
1906 CERROR("%s: array field size mismatch %d modulo %d != 0 (%d)\n",
1907 field->rmf_name, len, field->rmf_size, loc);
1910 } else if (pill->rc_area[loc][offset] != -1) {
1911 len = pill->rc_area[loc][offset];
1913 len = max(field->rmf_size, 0);
1915 value = getter(msg, offset, len);
1918 DEBUG_REQ(D_ERROR, pill->rc_req,
1919 "Wrong buffer for field `%s' (%d of %d) in format `%s': %d vs. %d (%s)\n",
1920 field->rmf_name, offset, lustre_msg_bufcount(msg),
1921 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1924 swabber_dumper_helper(pill, field, loc, offset, value, len,
1932 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1933 * buffer corresponding to the given RMF (\a field) of a \a pill.
1935 void *req_capsule_client_get(struct req_capsule *pill,
1936 const struct req_msg_field *field)
1938 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1940 EXPORT_SYMBOL(req_capsule_client_get);
1943 * Same as req_capsule_client_get(), but with a \a swabber argument.
1945 * Currently unused; will be removed when req_capsule_server_swab_get() is
1948 void *req_capsule_client_swab_get(struct req_capsule *pill,
1949 const struct req_msg_field *field,
1952 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1954 EXPORT_SYMBOL(req_capsule_client_swab_get);
1957 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
1959 * First the \a pill's request \a field's size is set (\a rc_area) using
1960 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1963 void *req_capsule_client_sized_get(struct req_capsule *pill,
1964 const struct req_msg_field *field,
1967 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1968 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1970 EXPORT_SYMBOL(req_capsule_client_sized_get);
1973 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
1974 * buffer corresponding to the given RMF (\a field) of a \a pill.
1976 void *req_capsule_server_get(struct req_capsule *pill,
1977 const struct req_msg_field *field)
1979 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1981 EXPORT_SYMBOL(req_capsule_server_get);
1984 * Same as req_capsule_server_get(), but with a \a swabber argument.
1986 * Ideally all swabbing should be done pursuant to RMF definitions, with no
1987 * swabbing done outside this capsule abstraction.
1989 void *req_capsule_server_swab_get(struct req_capsule *pill,
1990 const struct req_msg_field *field,
1993 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1995 EXPORT_SYMBOL(req_capsule_server_swab_get);
1998 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
2000 * First the \a pill's request \a field's size is set (\a rc_area) using
2001 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2004 void *req_capsule_server_sized_get(struct req_capsule *pill,
2005 const struct req_msg_field *field,
2008 req_capsule_set_size(pill, field, RCL_SERVER, len);
2009 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2011 EXPORT_SYMBOL(req_capsule_server_sized_get);
2013 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2014 const struct req_msg_field *field,
2015 int len, void *swabber)
2017 req_capsule_set_size(pill, field, RCL_SERVER, len);
2018 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2020 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2023 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2024 * field of the given \a pill.
2026 * This function must be used when constructing variable sized fields of a
2029 void req_capsule_set_size(struct req_capsule *pill,
2030 const struct req_msg_field *field,
2031 enum req_location loc, int size)
2033 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2035 if ((size != field->rmf_size) &&
2036 (field->rmf_size != -1) &&
2037 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2039 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2040 (size % field->rmf_size != 0)) {
2041 CERROR("%s: array field size mismatch %d %% %d != 0 (%d)\n",
2042 field->rmf_name, size, field->rmf_size, loc);
2044 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2045 size < field->rmf_size) {
2046 CERROR("%s: field size mismatch %d != %d (%d)\n",
2047 field->rmf_name, size, field->rmf_size, loc);
2052 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2054 EXPORT_SYMBOL(req_capsule_set_size);
2057 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2058 * for the given \a pill's given \a field.
2060 * NB: this function doesn't correspond with req_capsule_set_size(), which
2061 * actually sets the size in pill.rc_area[loc][offset], but this function
2062 * returns the message buflen[offset], maybe we should use another name.
2064 int req_capsule_get_size(const struct req_capsule *pill,
2065 const struct req_msg_field *field,
2066 enum req_location loc)
2068 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2070 return lustre_msg_buflen(__req_msg(pill, loc),
2071 __req_capsule_offset(pill, field, loc));
2073 EXPORT_SYMBOL(req_capsule_get_size);
2076 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2077 * given \a pill's request or reply (\a loc) given the field size recorded in
2078 * the \a pill's rc_area.
2080 * See also req_capsule_set_size().
2082 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2084 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2085 pill->rc_fmt->rf_fields[loc].nr,
2086 pill->rc_area[loc]);
2090 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2091 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2092 * PTLRPC request or reply given only an RQF (\a fmt).
2094 * This function should not be used for formats which contain variable size
2097 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2098 enum req_location loc)
2103 * This function should probably LASSERT() that fmt has no fields with
2104 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2105 * elements in the array there will ultimately be, but then, we could
2106 * assume that there will be at least one element, and that's just what
2109 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2113 for (; i < fmt->rf_fields[loc].nr; ++i)
2114 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2115 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2121 * Changes the format of an RPC.
2123 * The pill must already have been initialized, which means that it already has
2124 * a request format. The new format \a fmt must be an extension of the pill's
2125 * old format. Specifically: the new format must have as many request and reply
2126 * fields as the old one, and all fields shared by the old and new format must
2127 * be at least as large in the new format.
2129 * The new format's fields may be of different "type" than the old format, but
2130 * only for fields that are "opaque" blobs: fields which have a) have no
2131 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2132 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2133 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2134 * according to the key field. When the value, according to the key, contains a
2135 * structure (or array thereof) to be swabbed, the format should be changed to
2136 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2139 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2144 const struct req_format *old;
2146 LASSERT(pill->rc_fmt);
2147 LASSERT(__req_format_is_sane(fmt));
2151 * Sanity checking...
2153 for (i = 0; i < RCL_NR; ++i) {
2154 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2155 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2156 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2158 /* "opaque" fields can be transmogrified */
2159 if (!ofield->rmf_swabber &&
2160 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2161 (ofield->rmf_size == -1 ||
2162 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2164 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2167 * Last field in old format can be shorter than in new.
2169 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2170 FMT_FIELD(old, i, j)->rmf_size);
2175 EXPORT_SYMBOL(req_capsule_extend);
2178 * This function returns a non-zero value if the given \a field is present in
2179 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2182 int req_capsule_has_field(const struct req_capsule *pill,
2183 const struct req_msg_field *field,
2184 enum req_location loc)
2186 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2188 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2190 EXPORT_SYMBOL(req_capsule_has_field);
2193 * Returns a non-zero value if the given \a field is present in the given \a
2194 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2196 static int req_capsule_field_present(const struct req_capsule *pill,
2197 const struct req_msg_field *field,
2198 enum req_location loc)
2202 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2203 LASSERT(req_capsule_has_field(pill, field, loc));
2205 offset = __req_capsule_offset(pill, field, loc);
2206 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2210 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2211 * request or reply (\a loc).
2213 * This is not the opposite of req_capsule_extend().
2215 void req_capsule_shrink(struct req_capsule *pill,
2216 const struct req_msg_field *field,
2217 unsigned int newlen,
2218 enum req_location loc)
2220 const struct req_format *fmt;
2221 struct lustre_msg *msg;
2227 LASSERT(__req_format_is_sane(fmt));
2228 LASSERT(req_capsule_has_field(pill, field, loc));
2229 LASSERT(req_capsule_field_present(pill, field, loc));
2231 offset = __req_capsule_offset(pill, field, loc);
2233 msg = __req_msg(pill, loc);
2234 len = lustre_msg_buflen(msg, offset);
2235 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2236 fmt->rf_name, field->rmf_name, len, newlen);
2238 if (loc == RCL_CLIENT)
2239 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2242 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2245 EXPORT_SYMBOL(req_capsule_shrink);
2247 /* __REQ_LAYOUT_USER__ */