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, 2014, 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 <lustre_ver.h>
58 #include <obd_support.h>
59 /* lustre_swab_mdt_body */
60 #include <lustre/lustre_idl.h>
61 /* obd2cli_tgt() (required by DEBUG_REQ()) */
63 #include <lustre_debug.h>
64 #include <lustre_update.h>
65 #endif /* !__REQ_LAYOUT_USER__ */
67 /* struct ptlrpc_request, lustre_msg* */
68 #include <lustre_req_layout.h>
69 #include <lustre_acl.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 *quota_body_only[] = {
126 static const struct req_msg_field *ldlm_intent_quota_client[] = {
133 static const struct req_msg_field *ldlm_intent_quota_server[] = {
140 static const struct req_msg_field *mdt_close_client[] = {
147 static const struct req_msg_field *mdt_release_close_client[] = {
155 static const struct req_msg_field *obd_statfs_server[] = {
160 static const struct req_msg_field *seq_query_client[] = {
166 static const struct req_msg_field *seq_query_server[] = {
171 static const struct req_msg_field *fld_query_client[] = {
177 static const struct req_msg_field *fld_query_server[] = {
182 static const struct req_msg_field *fld_read_client[] = {
187 static const struct req_msg_field *fld_read_server[] = {
192 static const struct req_msg_field *mds_getattr_name_client[] = {
199 static const struct req_msg_field *mds_reint_client[] = {
204 static const struct req_msg_field *mds_reint_create_client[] = {
211 static const struct req_msg_field *mds_reint_create_slave_client[] = {
220 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
229 static const struct req_msg_field *mds_reint_create_sym_client[] = {
238 static const struct req_msg_field *mds_reint_open_client[] = {
247 static const struct req_msg_field *mds_reint_open_server[] = {
256 static const struct req_msg_field *mds_reint_unlink_client[] = {
264 static const struct req_msg_field *mds_reint_link_client[] = {
273 static const struct req_msg_field *mds_reint_rename_client[] = {
283 static const struct req_msg_field *mds_last_unlink_server[] = {
292 static const struct req_msg_field *mds_reint_setattr_client[] = {
302 static const struct req_msg_field *mds_reint_setxattr_client[] = {
311 static const struct req_msg_field *mdt_swap_layouts[] = {
320 static const struct req_msg_field *obd_connect_client[] = {
328 static const struct req_msg_field *obd_connect_server[] = {
333 static const struct req_msg_field *obd_set_info_client[] = {
339 static const struct req_msg_field *ost_grant_shrink_client[] = {
345 static const struct req_msg_field *mds_getinfo_client[] = {
351 static const struct req_msg_field *mds_getinfo_server[] = {
356 static const struct req_msg_field *ldlm_enqueue_client[] = {
361 static const struct req_msg_field *ldlm_enqueue_server[] = {
366 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
372 static const struct req_msg_field *ldlm_cp_callback_client[] = {
378 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
384 static const struct req_msg_field *ldlm_gl_callback_server[] = {
389 static const struct req_msg_field *ldlm_intent_basic_client[] = {
395 static const struct req_msg_field *ldlm_intent_client[] = {
402 static const struct req_msg_field *ldlm_intent_server[] = {
410 static const struct req_msg_field *ldlm_intent_layout_client[] = {
415 &RMF_EADATA /* for new layout to be set up */
417 static const struct req_msg_field *ldlm_intent_open_server[] = {
427 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
431 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
436 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
445 static const struct req_msg_field *ldlm_intent_create_client[] = {
449 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
455 static const struct req_msg_field *ldlm_intent_open_client[] = {
459 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
466 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
470 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
475 static const struct req_msg_field *ldlm_intent_getxattr_client[] = {
483 static const struct req_msg_field *ldlm_intent_getxattr_server[] = {
488 &RMF_ACL, /* for req_capsule_extend/mdt_intent_policy */
494 static const struct req_msg_field *mds_getxattr_client[] = {
502 static const struct req_msg_field *mds_getxattr_server[] = {
508 static const struct req_msg_field *mds_getattr_server[] = {
517 static const struct req_msg_field *mds_setattr_server[] = {
526 static const struct req_msg_field *mds_update_client[] = {
531 static const struct req_msg_field *mds_update_server[] = {
533 &RMF_OUT_UPDATE_REPLY,
536 static const struct req_msg_field *llog_origin_handle_create_client[] = {
542 static const struct req_msg_field *llogd_body_only[] = {
547 static const struct req_msg_field *llog_log_hdr_only[] = {
552 static const struct req_msg_field *llogd_conn_body_only[] = {
557 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
563 static const struct req_msg_field *obd_idx_read_client[] = {
568 static const struct req_msg_field *obd_idx_read_server[] = {
573 static const struct req_msg_field *ost_body_only[] = {
578 static const struct req_msg_field *ost_body_capa[] = {
584 static const struct req_msg_field *ost_destroy_client[] = {
592 static const struct req_msg_field *ost_brw_client[] = {
600 static const struct req_msg_field *ost_brw_read_server[] = {
605 static const struct req_msg_field *ost_brw_write_server[] = {
611 static const struct req_msg_field *ost_get_info_generic_server[] = {
616 static const struct req_msg_field *ost_get_info_generic_client[] = {
621 static const struct req_msg_field *ost_get_last_id_server[] = {
626 static const struct req_msg_field *ost_get_last_fid_client[] = {
632 static const struct req_msg_field *ost_get_last_fid_server[] = {
637 static const struct req_msg_field *ost_get_fiemap_client[] = {
643 static const struct req_msg_field *ost_get_fiemap_server[] = {
648 static const struct req_msg_field *mdt_hsm_progress[] = {
651 &RMF_MDS_HSM_PROGRESS,
654 static const struct req_msg_field *mdt_hsm_ct_register[] = {
657 &RMF_MDS_HSM_ARCHIVE,
660 static const struct req_msg_field *mdt_hsm_ct_unregister[] = {
665 static const struct req_msg_field *mdt_hsm_action_server[] = {
668 &RMF_MDS_HSM_CURRENT_ACTION,
671 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
677 static const struct req_msg_field *mdt_hsm_state_set[] = {
684 static const struct req_msg_field *mdt_hsm_request[] = {
687 &RMF_MDS_HSM_REQUEST,
688 &RMF_MDS_HSM_USER_ITEM,
692 static const struct req_msg_field *obd_lfsck_request[] = {
697 static const struct req_msg_field *obd_lfsck_reply[] = {
702 static struct req_format *req_formats[] = {
709 &RQF_MGS_CONFIG_READ,
719 &RQF_MDS_GETATTR_NAME,
723 &RQF_MDS_RELEASE_CLOSE,
725 &RQF_MDS_DONE_WRITING,
727 &RQF_MDS_REINT_CREATE,
728 &RQF_MDS_REINT_CREATE_RMT_ACL,
729 &RQF_MDS_REINT_CREATE_SLAVE,
730 &RQF_MDS_REINT_CREATE_SYM,
732 &RQF_MDS_REINT_UNLINK,
734 &RQF_MDS_REINT_RENAME,
735 &RQF_MDS_REINT_SETATTR,
736 &RQF_MDS_REINT_SETXATTR,
739 &RQF_MDS_HSM_PROGRESS,
740 &RQF_MDS_HSM_CT_REGISTER,
741 &RQF_MDS_HSM_CT_UNREGISTER,
742 &RQF_MDS_HSM_STATE_GET,
743 &RQF_MDS_HSM_STATE_SET,
745 &RQF_MDS_HSM_REQUEST,
746 &RQF_MDS_SWAP_LAYOUTS,
762 &RQF_OST_SET_GRANT_INFO,
764 &RQF_OST_GET_INFO_LAST_ID,
765 &RQF_OST_GET_INFO_LAST_FID,
766 &RQF_OST_SET_INFO_LAST_FID,
767 &RQF_OST_GET_INFO_FIEMAP,
769 &RQF_LDLM_ENQUEUE_LVB,
773 &RQF_LDLM_CP_CALLBACK,
774 &RQF_LDLM_BL_CALLBACK,
775 &RQF_LDLM_GL_CALLBACK,
776 &RQF_LDLM_GL_DESC_CALLBACK,
778 &RQF_LDLM_INTENT_BASIC,
779 &RQF_LDLM_INTENT_LAYOUT,
780 &RQF_LDLM_INTENT_GETATTR,
781 &RQF_LDLM_INTENT_OPEN,
782 &RQF_LDLM_INTENT_CREATE,
783 &RQF_LDLM_INTENT_UNLINK,
784 &RQF_LDLM_INTENT_GETXATTR,
785 &RQF_LDLM_INTENT_QUOTA,
788 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
789 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
790 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
791 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
792 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
793 &RQF_LLOG_ORIGIN_CONNECT,
799 struct req_msg_field {
800 const __u32 rmf_flags;
801 const char *rmf_name;
803 * Field length. (-1) means "variable length". If the
804 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
805 * but the actual size must be a whole multiple of \a rmf_size.
808 void (*rmf_swabber)(void *);
809 void (*rmf_dumper)(void *);
810 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
815 * The field is a string, must be NUL-terminated.
817 RMF_F_STRING = 1 << 0,
819 * The field's buffer size need not match the declared \a rmf_size.
821 RMF_F_NO_SIZE_CHECK = 1 << 1,
823 * The field's buffer size must be a whole multiple of the declared \a
824 * rmf_size and the \a rmf_swabber function must work on the declared \a
825 * rmf_size worth of bytes.
827 RMF_F_STRUCT_ARRAY = 1 << 2
835 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
836 .rmf_name = (name), \
837 .rmf_flags = (flags), \
838 .rmf_size = (size), \
839 .rmf_swabber = (void (*)(void*))(swabber), \
840 .rmf_dumper = (void (*)(void*))(dumper) \
843 struct req_msg_field RMF_GENERIC_DATA =
844 DEFINE_MSGF("generic_data", 0,
846 EXPORT_SYMBOL(RMF_GENERIC_DATA);
848 struct req_msg_field RMF_MGS_TARGET_INFO =
849 DEFINE_MSGF("mgs_target_info", 0,
850 sizeof(struct mgs_target_info),
851 lustre_swab_mgs_target_info, NULL);
852 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
854 struct req_msg_field RMF_MGS_SEND_PARAM =
855 DEFINE_MSGF("mgs_send_param", 0,
856 sizeof(struct mgs_send_param),
858 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
860 struct req_msg_field RMF_MGS_CONFIG_BODY =
861 DEFINE_MSGF("mgs_config_read request", 0,
862 sizeof(struct mgs_config_body),
863 lustre_swab_mgs_config_body, NULL);
864 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
866 struct req_msg_field RMF_MGS_CONFIG_RES =
867 DEFINE_MSGF("mgs_config_read reply ", 0,
868 sizeof(struct mgs_config_res),
869 lustre_swab_mgs_config_res, NULL);
870 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
872 struct req_msg_field RMF_U32 =
873 DEFINE_MSGF("generic u32", 0,
874 sizeof(__u32), lustre_swab_generic_32s, NULL);
875 EXPORT_SYMBOL(RMF_U32);
877 struct req_msg_field RMF_SETINFO_VAL =
878 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
879 EXPORT_SYMBOL(RMF_SETINFO_VAL);
881 struct req_msg_field RMF_GETINFO_KEY =
882 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
883 EXPORT_SYMBOL(RMF_GETINFO_KEY);
885 struct req_msg_field RMF_GETINFO_VALLEN =
886 DEFINE_MSGF("getinfo_vallen", 0,
887 sizeof(__u32), lustre_swab_generic_32s, NULL);
888 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
890 struct req_msg_field RMF_GETINFO_VAL =
891 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
892 EXPORT_SYMBOL(RMF_GETINFO_VAL);
894 struct req_msg_field RMF_SEQ_OPC =
895 DEFINE_MSGF("seq_query_opc", 0,
896 sizeof(__u32), lustre_swab_generic_32s, NULL);
897 EXPORT_SYMBOL(RMF_SEQ_OPC);
899 struct req_msg_field RMF_SEQ_RANGE =
900 DEFINE_MSGF("seq_query_range", 0,
901 sizeof(struct lu_seq_range),
902 lustre_swab_lu_seq_range, NULL);
903 EXPORT_SYMBOL(RMF_SEQ_RANGE);
905 struct req_msg_field RMF_FLD_OPC =
906 DEFINE_MSGF("fld_query_opc", 0,
907 sizeof(__u32), lustre_swab_generic_32s, NULL);
908 EXPORT_SYMBOL(RMF_FLD_OPC);
910 struct req_msg_field RMF_FLD_MDFLD =
911 DEFINE_MSGF("fld_query_mdfld", 0,
912 sizeof(struct lu_seq_range),
913 lustre_swab_lu_seq_range, NULL);
914 EXPORT_SYMBOL(RMF_FLD_MDFLD);
916 struct req_msg_field RMF_MDT_BODY =
917 DEFINE_MSGF("mdt_body", 0,
918 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
919 EXPORT_SYMBOL(RMF_MDT_BODY);
921 struct req_msg_field RMF_OBD_QUOTACTL =
922 DEFINE_MSGF("obd_quotactl", 0,
923 sizeof(struct obd_quotactl),
924 lustre_swab_obd_quotactl, NULL);
925 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
927 struct req_msg_field RMF_QUOTA_BODY =
928 DEFINE_MSGF("quota_body", 0,
929 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
930 EXPORT_SYMBOL(RMF_QUOTA_BODY);
932 struct req_msg_field RMF_MDT_EPOCH =
933 DEFINE_MSGF("mdt_ioepoch", 0,
934 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
935 EXPORT_SYMBOL(RMF_MDT_EPOCH);
937 struct req_msg_field RMF_PTLRPC_BODY =
938 DEFINE_MSGF("ptlrpc_body", 0,
939 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
940 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
942 struct req_msg_field RMF_CLOSE_DATA =
943 DEFINE_MSGF("data_version", 0,
944 sizeof(struct close_data), lustre_swab_close_data, NULL);
945 EXPORT_SYMBOL(RMF_CLOSE_DATA);
947 struct req_msg_field RMF_OBD_STATFS =
948 DEFINE_MSGF("obd_statfs", 0,
949 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
950 EXPORT_SYMBOL(RMF_OBD_STATFS);
952 struct req_msg_field RMF_SETINFO_KEY =
953 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
954 EXPORT_SYMBOL(RMF_SETINFO_KEY);
956 struct req_msg_field RMF_NAME =
957 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
958 EXPORT_SYMBOL(RMF_NAME);
960 struct req_msg_field RMF_SYMTGT =
961 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
962 EXPORT_SYMBOL(RMF_SYMTGT);
964 struct req_msg_field RMF_TGTUUID =
965 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
967 EXPORT_SYMBOL(RMF_TGTUUID);
969 struct req_msg_field RMF_CLUUID =
970 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
972 EXPORT_SYMBOL(RMF_CLUUID);
974 struct req_msg_field RMF_STRING =
975 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
976 EXPORT_SYMBOL(RMF_STRING);
978 struct req_msg_field RMF_LLOGD_BODY =
979 DEFINE_MSGF("llogd_body", 0,
980 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
981 EXPORT_SYMBOL(RMF_LLOGD_BODY);
983 struct req_msg_field RMF_LLOG_LOG_HDR =
984 DEFINE_MSGF("llog_log_hdr", 0,
985 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
986 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
988 struct req_msg_field RMF_LLOGD_CONN_BODY =
989 DEFINE_MSGF("llogd_conn_body", 0,
990 sizeof(struct llogd_conn_body),
991 lustre_swab_llogd_conn_body, NULL);
992 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
995 * connection handle received in MDS_CONNECT request.
997 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
998 * that the client does not interpret at all.
1000 struct req_msg_field RMF_CONN =
1001 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
1002 EXPORT_SYMBOL(RMF_CONN);
1004 struct req_msg_field RMF_CONNECT_DATA =
1005 DEFINE_MSGF("cdata",
1006 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
1007 sizeof(struct obd_connect_data),
1008 lustre_swab_connect, NULL);
1009 EXPORT_SYMBOL(RMF_CONNECT_DATA);
1011 struct req_msg_field RMF_DLM_REQ =
1012 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
1013 sizeof(struct ldlm_request),
1014 lustre_swab_ldlm_request, NULL);
1015 EXPORT_SYMBOL(RMF_DLM_REQ);
1017 struct req_msg_field RMF_DLM_REP =
1018 DEFINE_MSGF("dlm_rep", 0,
1019 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
1020 EXPORT_SYMBOL(RMF_DLM_REP);
1022 struct req_msg_field RMF_LDLM_INTENT =
1023 DEFINE_MSGF("ldlm_intent", 0,
1024 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
1025 EXPORT_SYMBOL(RMF_LDLM_INTENT);
1027 struct req_msg_field RMF_DLM_LVB =
1028 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
1029 EXPORT_SYMBOL(RMF_DLM_LVB);
1031 struct req_msg_field RMF_DLM_GL_DESC =
1032 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
1033 lustre_swab_gl_desc, NULL);
1034 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
1036 struct req_msg_field RMF_MDT_MD =
1037 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
1038 EXPORT_SYMBOL(RMF_MDT_MD);
1040 struct req_msg_field RMF_REC_REINT =
1041 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
1042 lustre_swab_mdt_rec_reint, NULL);
1043 EXPORT_SYMBOL(RMF_REC_REINT);
1045 /* FIXME: this length should be defined as a macro */
1046 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
1048 EXPORT_SYMBOL(RMF_EADATA);
1050 struct req_msg_field RMF_EAVALS = DEFINE_MSGF("eavals", 0, -1, NULL, NULL);
1051 EXPORT_SYMBOL(RMF_EAVALS);
1053 struct req_msg_field RMF_ACL =
1054 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
1055 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
1056 EXPORT_SYMBOL(RMF_ACL);
1058 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
1059 struct req_msg_field RMF_LOGCOOKIES =
1060 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
1061 sizeof(struct llog_cookie), NULL, NULL);
1062 EXPORT_SYMBOL(RMF_LOGCOOKIES);
1064 struct req_msg_field RMF_CAPA1 =
1065 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1066 lustre_swab_lustre_capa, NULL);
1067 EXPORT_SYMBOL(RMF_CAPA1);
1069 struct req_msg_field RMF_CAPA2 =
1070 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1071 lustre_swab_lustre_capa, NULL);
1072 EXPORT_SYMBOL(RMF_CAPA2);
1074 struct req_msg_field RMF_LAYOUT_INTENT =
1075 DEFINE_MSGF("layout_intent", 0,
1076 sizeof(struct layout_intent), lustre_swab_layout_intent,
1078 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1081 * OST request field.
1083 struct req_msg_field RMF_OST_BODY =
1084 DEFINE_MSGF("ost_body", 0,
1085 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1086 EXPORT_SYMBOL(RMF_OST_BODY);
1088 struct req_msg_field RMF_OBD_IOOBJ =
1089 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1090 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1091 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1093 struct req_msg_field RMF_NIOBUF_REMOTE =
1094 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1095 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1097 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1099 struct req_msg_field RMF_RCS =
1100 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1101 lustre_swab_generic_32s, dump_rcs);
1102 EXPORT_SYMBOL(RMF_RCS);
1104 struct req_msg_field RMF_EAVALS_LENS =
1105 DEFINE_MSGF("eavals_lens", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1106 lustre_swab_generic_32s, NULL);
1107 EXPORT_SYMBOL(RMF_EAVALS_LENS);
1109 struct req_msg_field RMF_OBD_ID =
1110 DEFINE_MSGF("obd_id", 0,
1111 sizeof(__u64), lustre_swab_ost_last_id, NULL);
1112 EXPORT_SYMBOL(RMF_OBD_ID);
1114 struct req_msg_field RMF_FID =
1115 DEFINE_MSGF("fid", 0,
1116 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1117 EXPORT_SYMBOL(RMF_FID);
1119 struct req_msg_field RMF_OST_ID =
1120 DEFINE_MSGF("ost_id", 0,
1121 sizeof(struct ost_id), lustre_swab_ost_id, NULL);
1122 EXPORT_SYMBOL(RMF_OST_ID);
1124 struct req_msg_field RMF_FIEMAP_KEY =
1125 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1126 lustre_swab_fiemap, NULL);
1127 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1129 struct req_msg_field RMF_FIEMAP_VAL =
1130 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1131 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1133 struct req_msg_field RMF_IDX_INFO =
1134 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1135 lustre_swab_idx_info, NULL);
1136 EXPORT_SYMBOL(RMF_IDX_INFO);
1137 struct req_msg_field RMF_HSM_USER_STATE =
1138 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1139 lustre_swab_hsm_user_state, NULL);
1140 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1142 struct req_msg_field RMF_HSM_STATE_SET =
1143 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1144 lustre_swab_hsm_state_set, NULL);
1145 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1147 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1148 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1149 lustre_swab_hsm_progress_kernel, NULL);
1150 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1152 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1153 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1154 lustre_swab_hsm_current_action, NULL);
1155 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1157 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1158 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1159 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1161 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1163 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1164 DEFINE_MSGF("hsm_archive", 0,
1165 sizeof(__u32), lustre_swab_generic_32s, NULL);
1166 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1168 struct req_msg_field RMF_MDS_HSM_REQUEST =
1169 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1170 lustre_swab_hsm_request, NULL);
1171 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1173 struct req_msg_field RMF_OUT_UPDATE = DEFINE_MSGF("object_update", 0, -1,
1174 lustre_swab_object_update_request, NULL);
1175 EXPORT_SYMBOL(RMF_OUT_UPDATE);
1177 struct req_msg_field RMF_OUT_UPDATE_REPLY =
1178 DEFINE_MSGF("object_update_reply", 0, -1,
1179 lustre_swab_object_update_reply, NULL);
1180 EXPORT_SYMBOL(RMF_OUT_UPDATE_REPLY);
1182 struct req_msg_field RMF_SWAP_LAYOUTS =
1183 DEFINE_MSGF("swap_layouts", 0, sizeof(struct mdc_swap_layouts),
1184 lustre_swab_swap_layouts, NULL);
1185 EXPORT_SYMBOL(RMF_SWAP_LAYOUTS);
1187 struct req_msg_field RMF_LFSCK_REQUEST =
1188 DEFINE_MSGF("lfsck_request", 0, sizeof(struct lfsck_request),
1189 lustre_swab_lfsck_request, NULL);
1190 EXPORT_SYMBOL(RMF_LFSCK_REQUEST);
1192 struct req_msg_field RMF_LFSCK_REPLY =
1193 DEFINE_MSGF("lfsck_reply", 0, sizeof(struct lfsck_reply),
1194 lustre_swab_lfsck_reply, NULL);
1195 EXPORT_SYMBOL(RMF_LFSCK_REPLY);
1202 const char *rf_name;
1206 const struct req_msg_field **d;
1207 } rf_fields[RCL_NR];
1210 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1224 #define DEFINE_REQ_FMT0(name, client, server) \
1225 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1227 struct req_format RQF_OBD_PING =
1228 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1229 EXPORT_SYMBOL(RQF_OBD_PING);
1231 struct req_format RQF_OBD_SET_INFO =
1232 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1233 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1235 /* Read index file through the network */
1236 struct req_format RQF_OBD_IDX_READ =
1237 DEFINE_REQ_FMT0("OBD_IDX_READ",
1238 obd_idx_read_client, obd_idx_read_server);
1239 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1241 struct req_format RQF_SEC_CTX =
1242 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1243 EXPORT_SYMBOL(RQF_SEC_CTX);
1245 struct req_format RQF_MGS_TARGET_REG =
1246 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1247 mgs_target_info_only);
1248 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1250 struct req_format RQF_MGS_SET_INFO =
1251 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1253 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1255 struct req_format RQF_MGS_CONFIG_READ =
1256 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1257 mgs_config_read_server);
1258 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1260 struct req_format RQF_SEQ_QUERY =
1261 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1262 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1264 struct req_format RQF_FLD_QUERY =
1265 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1266 EXPORT_SYMBOL(RQF_FLD_QUERY);
1268 struct req_format RQF_FLD_READ =
1269 DEFINE_REQ_FMT0("FLD_READ", fld_read_client, fld_read_server);
1270 EXPORT_SYMBOL(RQF_FLD_READ);
1272 struct req_format RQF_LOG_CANCEL =
1273 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1274 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1276 struct req_format RQF_MDS_QUOTACHECK =
1277 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1278 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1280 struct req_format RQF_OST_QUOTACHECK =
1281 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1282 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1284 struct req_format RQF_MDS_QUOTACTL =
1285 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1286 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1288 struct req_format RQF_OST_QUOTACTL =
1289 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1290 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1292 struct req_format RQF_QC_CALLBACK =
1293 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1294 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1296 struct req_format RQF_QUOTA_DQACQ =
1297 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1298 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1300 struct req_format RQF_LDLM_INTENT_QUOTA =
1301 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1302 ldlm_intent_quota_client,
1303 ldlm_intent_quota_server);
1304 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1306 struct req_format RQF_MDS_GETSTATUS =
1307 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1308 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1310 struct req_format RQF_MDS_STATFS =
1311 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1312 EXPORT_SYMBOL(RQF_MDS_STATFS);
1314 struct req_format RQF_MDS_SYNC =
1315 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1316 EXPORT_SYMBOL(RQF_MDS_SYNC);
1318 struct req_format RQF_MDS_GETATTR =
1319 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1320 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1322 struct req_format RQF_MDS_GETXATTR =
1323 DEFINE_REQ_FMT0("MDS_GETXATTR",
1324 mds_getxattr_client, mds_getxattr_server);
1325 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1327 struct req_format RQF_MDS_GETATTR_NAME =
1328 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1329 mds_getattr_name_client, mds_getattr_server);
1330 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1332 struct req_format RQF_MDS_REINT =
1333 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1334 EXPORT_SYMBOL(RQF_MDS_REINT);
1336 struct req_format RQF_MDS_REINT_CREATE =
1337 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1338 mds_reint_create_client, mdt_body_capa);
1339 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1341 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1342 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1343 mds_reint_create_rmt_acl_client, mdt_body_capa);
1344 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1346 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1347 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1348 mds_reint_create_slave_client, mdt_body_capa);
1349 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1351 struct req_format RQF_MDS_REINT_CREATE_SYM =
1352 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1353 mds_reint_create_sym_client, mdt_body_capa);
1354 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1356 struct req_format RQF_MDS_REINT_OPEN =
1357 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1358 mds_reint_open_client, mds_reint_open_server);
1359 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1361 struct req_format RQF_MDS_REINT_UNLINK =
1362 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1363 mds_last_unlink_server);
1364 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1366 struct req_format RQF_MDS_REINT_LINK =
1367 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1368 mds_reint_link_client, mdt_body_only);
1369 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1371 struct req_format RQF_MDS_REINT_RENAME =
1372 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1373 mds_last_unlink_server);
1374 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1376 struct req_format RQF_MDS_REINT_SETATTR =
1377 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1378 mds_reint_setattr_client, mds_setattr_server);
1379 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1381 struct req_format RQF_MDS_REINT_SETXATTR =
1382 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1383 mds_reint_setxattr_client, mdt_body_only);
1384 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1386 struct req_format RQF_MDS_CONNECT =
1387 DEFINE_REQ_FMT0("MDS_CONNECT",
1388 obd_connect_client, obd_connect_server);
1389 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1391 struct req_format RQF_MDS_DISCONNECT =
1392 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1393 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1395 struct req_format RQF_MDS_GET_INFO =
1396 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1397 mds_getinfo_server);
1398 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1400 struct req_format RQF_OUT_UPDATE =
1401 DEFINE_REQ_FMT0("OUT_UPDATE_OBJ", mds_update_client,
1403 EXPORT_SYMBOL(RQF_OUT_UPDATE);
1405 struct req_format RQF_LDLM_ENQUEUE =
1406 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1407 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1408 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1410 struct req_format RQF_LDLM_ENQUEUE_LVB =
1411 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1412 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1413 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1415 struct req_format RQF_LDLM_CONVERT =
1416 DEFINE_REQ_FMT0("LDLM_CONVERT",
1417 ldlm_enqueue_client, ldlm_enqueue_server);
1418 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1420 struct req_format RQF_LDLM_CANCEL =
1421 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1422 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1424 struct req_format RQF_LDLM_CALLBACK =
1425 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1426 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1428 struct req_format RQF_LDLM_CP_CALLBACK =
1429 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1430 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1432 struct req_format RQF_LDLM_BL_CALLBACK =
1433 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1434 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1436 struct req_format RQF_LDLM_GL_CALLBACK =
1437 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1438 ldlm_gl_callback_server);
1439 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1441 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1442 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1443 ldlm_gl_callback_server);
1444 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1446 struct req_format RQF_LDLM_INTENT_BASIC =
1447 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1448 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1449 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1451 struct req_format RQF_LDLM_INTENT =
1452 DEFINE_REQ_FMT0("LDLM_INTENT",
1453 ldlm_intent_client, ldlm_intent_server);
1454 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1456 struct req_format RQF_LDLM_INTENT_LAYOUT =
1457 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1458 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1459 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1461 struct req_format RQF_LDLM_INTENT_GETATTR =
1462 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1463 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1464 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1466 struct req_format RQF_LDLM_INTENT_OPEN =
1467 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1468 ldlm_intent_open_client, ldlm_intent_open_server);
1469 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1471 struct req_format RQF_LDLM_INTENT_CREATE =
1472 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1473 ldlm_intent_create_client, ldlm_intent_getattr_server);
1474 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1476 struct req_format RQF_LDLM_INTENT_UNLINK =
1477 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1478 ldlm_intent_unlink_client, ldlm_intent_server);
1479 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1481 struct req_format RQF_LDLM_INTENT_GETXATTR =
1482 DEFINE_REQ_FMT0("LDLM_INTENT_GETXATTR",
1483 ldlm_intent_getxattr_client,
1484 ldlm_intent_getxattr_server);
1485 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETXATTR);
1487 struct req_format RQF_MDS_CLOSE =
1488 DEFINE_REQ_FMT0("MDS_CLOSE",
1489 mdt_close_client, mds_last_unlink_server);
1490 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1492 struct req_format RQF_MDS_RELEASE_CLOSE =
1493 DEFINE_REQ_FMT0("MDS_CLOSE",
1494 mdt_release_close_client, mds_last_unlink_server);
1495 EXPORT_SYMBOL(RQF_MDS_RELEASE_CLOSE);
1497 struct req_format RQF_MDS_DONE_WRITING =
1498 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1499 mdt_close_client, mdt_body_only);
1500 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1502 struct req_format RQF_MDS_READPAGE =
1503 DEFINE_REQ_FMT0("MDS_READPAGE",
1504 mdt_body_capa, mdt_body_only);
1505 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1507 struct req_format RQF_MDS_HSM_ACTION =
1508 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1509 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1511 struct req_format RQF_MDS_HSM_PROGRESS =
1512 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1513 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1515 struct req_format RQF_MDS_HSM_CT_REGISTER =
1516 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1517 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1519 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1520 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", mdt_hsm_ct_unregister, empty);
1521 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1523 struct req_format RQF_MDS_HSM_STATE_GET =
1524 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1525 mdt_body_capa, mdt_hsm_state_get_server);
1526 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1528 struct req_format RQF_MDS_HSM_STATE_SET =
1529 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1530 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1532 struct req_format RQF_MDS_HSM_REQUEST =
1533 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1534 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1536 struct req_format RQF_MDS_SWAP_LAYOUTS =
1537 DEFINE_REQ_FMT0("MDS_SWAP_LAYOUTS",
1538 mdt_swap_layouts, empty);
1539 EXPORT_SYMBOL(RQF_MDS_SWAP_LAYOUTS);
1541 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1542 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1543 llog_origin_handle_create_client, llogd_body_only);
1544 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1546 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1547 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1548 llogd_body_only, llogd_body_only);
1549 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1551 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1552 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1553 llogd_body_only, llog_origin_handle_next_block_server);
1554 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1556 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1557 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1558 llogd_body_only, llog_origin_handle_next_block_server);
1559 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1561 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1562 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1563 llogd_body_only, llog_log_hdr_only);
1564 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1566 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1567 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1568 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1570 struct req_format RQF_CONNECT =
1571 DEFINE_REQ_FMT0("CONNECT", obd_connect_client, obd_connect_server);
1572 EXPORT_SYMBOL(RQF_CONNECT);
1574 struct req_format RQF_OST_CONNECT =
1575 DEFINE_REQ_FMT0("OST_CONNECT",
1576 obd_connect_client, obd_connect_server);
1577 EXPORT_SYMBOL(RQF_OST_CONNECT);
1579 struct req_format RQF_OST_DISCONNECT =
1580 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1581 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1583 struct req_format RQF_OST_GETATTR =
1584 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1585 EXPORT_SYMBOL(RQF_OST_GETATTR);
1587 struct req_format RQF_OST_SETATTR =
1588 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1589 EXPORT_SYMBOL(RQF_OST_SETATTR);
1591 struct req_format RQF_OST_CREATE =
1592 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1593 EXPORT_SYMBOL(RQF_OST_CREATE);
1595 struct req_format RQF_OST_PUNCH =
1596 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1597 EXPORT_SYMBOL(RQF_OST_PUNCH);
1599 struct req_format RQF_OST_SYNC =
1600 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1601 EXPORT_SYMBOL(RQF_OST_SYNC);
1603 struct req_format RQF_OST_DESTROY =
1604 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1605 EXPORT_SYMBOL(RQF_OST_DESTROY);
1607 struct req_format RQF_OST_BRW_READ =
1608 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1609 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1611 struct req_format RQF_OST_BRW_WRITE =
1612 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1613 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1615 struct req_format RQF_OST_STATFS =
1616 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1617 EXPORT_SYMBOL(RQF_OST_STATFS);
1619 struct req_format RQF_OST_SET_GRANT_INFO =
1620 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1622 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1624 struct req_format RQF_OST_GET_INFO =
1625 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1626 ost_get_info_generic_server);
1627 EXPORT_SYMBOL(RQF_OST_GET_INFO);
1629 struct req_format RQF_OST_GET_INFO_LAST_ID =
1630 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1631 ost_get_last_id_server);
1632 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1634 struct req_format RQF_OST_GET_INFO_LAST_FID =
1635 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", ost_get_last_fid_client,
1636 ost_get_last_fid_server);
1637 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1639 struct req_format RQF_OST_SET_INFO_LAST_FID =
1640 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1642 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1644 struct req_format RQF_OST_GET_INFO_FIEMAP =
1645 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1646 ost_get_fiemap_server);
1647 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1649 struct req_format RQF_LFSCK_NOTIFY =
1650 DEFINE_REQ_FMT0("LFSCK_NOTIFY", obd_lfsck_request, empty);
1651 EXPORT_SYMBOL(RQF_LFSCK_NOTIFY);
1653 struct req_format RQF_LFSCK_QUERY =
1654 DEFINE_REQ_FMT0("LFSCK_QUERY", obd_lfsck_request, obd_lfsck_reply);
1655 EXPORT_SYMBOL(RQF_LFSCK_QUERY);
1657 #if !defined(__REQ_LAYOUT_USER__)
1659 /* Convenience macro */
1660 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1663 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1664 * field of RQFs and the \a rmf_offset field of RMFs.
1666 int req_layout_init(void)
1671 struct req_format *rf = NULL;
1673 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1674 rf = req_formats[i];
1676 for (j = 0; j < RCL_NR; ++j) {
1677 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1678 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1679 struct req_msg_field *field;
1681 field = (typeof(field))rf->rf_fields[j].d[k];
1682 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1683 || field->rmf_size > 0);
1684 LASSERT(field->rmf_offset[i][j] == 0);
1686 * k + 1 to detect unused format/field
1689 field->rmf_offset[i][j] = k + 1;
1695 EXPORT_SYMBOL(req_layout_init);
1697 void req_layout_fini(void)
1700 EXPORT_SYMBOL(req_layout_fini);
1703 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1705 * Actual/expected field sizes are set elsewhere in functions in this file:
1706 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1707 * req_capsule_msg_size(). The \a rc_area information is used by.
1708 * ptlrpc_request_set_replen().
1710 void req_capsule_init_area(struct req_capsule *pill)
1714 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1715 pill->rc_area[RCL_CLIENT][i] = -1;
1716 pill->rc_area[RCL_SERVER][i] = -1;
1719 EXPORT_SYMBOL(req_capsule_init_area);
1722 * Initialize a pill.
1724 * The \a location indicates whether the caller is executing on the client side
1725 * (RCL_CLIENT) or server side (RCL_SERVER)..
1727 void req_capsule_init(struct req_capsule *pill,
1728 struct ptlrpc_request *req,
1729 enum req_location location)
1731 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1734 * Today all capsules are embedded in ptlrpc_request structs,
1735 * but just in case that ever isn't the case, we don't reach
1736 * into req unless req != NULL and pill is the one embedded in
1739 * The req->rq_pill_init flag makes it safe to initialize a pill
1740 * twice, which might happen in the OST paths as a result of the
1741 * high-priority RPC queue getting peeked at before ost_handle()
1742 * handles an OST RPC.
1744 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1747 memset(pill, 0, sizeof *pill);
1749 pill->rc_loc = location;
1750 req_capsule_init_area(pill);
1752 if (req != NULL && pill == &req->rq_pill)
1753 req->rq_pill_init = 1;
1755 EXPORT_SYMBOL(req_capsule_init);
1757 void req_capsule_fini(struct req_capsule *pill)
1760 EXPORT_SYMBOL(req_capsule_fini);
1762 static int __req_format_is_sane(const struct req_format *fmt)
1764 return fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1765 req_formats[fmt->rf_idx] == fmt;
1768 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1769 enum req_location loc)
1771 struct ptlrpc_request *req;
1774 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1778 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1779 * (see req_capsule_extend()).
1781 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1783 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1784 LASSERT(__req_format_is_sane(fmt));
1788 EXPORT_SYMBOL(req_capsule_set);
1791 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1794 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1795 * variable-sized fields. The field sizes come from the declared \a rmf_size
1796 * field of a \a pill's \a rc_fmt's RMF's.
1798 size_t req_capsule_filled_sizes(struct req_capsule *pill,
1799 enum req_location loc)
1801 const struct req_format *fmt = pill->rc_fmt;
1804 LASSERT(fmt != NULL);
1806 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1807 if (pill->rc_area[loc][i] == -1) {
1808 pill->rc_area[loc][i] =
1809 fmt->rf_fields[loc].d[i]->rmf_size;
1810 if (pill->rc_area[loc][i] == -1) {
1812 * Skip the following fields.
1814 * If this LASSERT() trips then you're missing a
1815 * call to req_capsule_set_size().
1817 LASSERT(loc != RCL_SERVER);
1824 EXPORT_SYMBOL(req_capsule_filled_sizes);
1827 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1829 * This function uses the \a pill's \a rc_area as filled in by
1830 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1833 int req_capsule_server_pack(struct req_capsule *pill)
1835 const struct req_format *fmt;
1839 LASSERT(pill->rc_loc == RCL_SERVER);
1841 LASSERT(fmt != NULL);
1843 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1844 rc = lustre_pack_reply(pill->rc_req, count,
1845 pill->rc_area[RCL_SERVER], NULL);
1847 DEBUG_REQ(D_ERROR, pill->rc_req,
1848 "Cannot pack %d fields in format `%s': ",
1849 count, fmt->rf_name);
1853 EXPORT_SYMBOL(req_capsule_server_pack);
1856 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1857 * corresponding to the given RMF (\a field).
1859 static __u32 __req_capsule_offset(const struct req_capsule *pill,
1860 const struct req_msg_field *field,
1861 enum req_location loc)
1865 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1866 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1867 pill->rc_fmt->rf_name,
1868 field->rmf_name, offset, loc);
1871 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1876 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1881 swabber_dumper_helper(struct req_capsule *pill,
1882 const struct req_msg_field *field,
1883 enum req_location loc,
1885 void *value, int len, int dump, void (*swabber)( void *))
1891 int inout = loc == RCL_CLIENT;
1893 swabber = swabber ?: field->rmf_swabber;
1895 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1896 swabber != NULL && value != NULL)
1901 if (!field->rmf_dumper)
1904 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1906 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1907 do_swab ? "unswabbed " : "", field->rmf_name);
1908 field->rmf_dumper(value);
1913 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1915 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1916 "follows\n", field->rmf_name);
1917 field->rmf_dumper(value);
1924 * We're swabbing an array; swabber() swabs a single array element, so
1925 * swab every element.
1927 LASSERT((len % field->rmf_size) == 0);
1928 for (p = value, i = 0, n = len / field->rmf_size;
1930 i++, p += field->rmf_size) {
1932 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1933 "element %d follows\n",
1934 do_swab ? "unswabbed " : "", field->rmf_name, i);
1935 field->rmf_dumper(p);
1941 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1942 "element %d follows\n", field->rmf_name, i);
1943 field->rmf_dumper(value);
1947 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1951 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1952 * corresponding to the given RMF (\a field).
1954 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1955 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1956 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1957 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1958 * element of the array swabbed.
1960 static void *__req_capsule_get(struct req_capsule *pill,
1961 const struct req_msg_field *field,
1962 enum req_location loc,
1963 void (*swabber)( void *),
1966 const struct req_format *fmt;
1967 struct lustre_msg *msg;
1972 void *(*getter)(struct lustre_msg *m, __u32 n, __u32 minlen);
1974 static const char *rcl_names[RCL_NR] = {
1975 [RCL_CLIENT] = "client",
1976 [RCL_SERVER] = "server"
1979 LASSERT(pill != NULL);
1980 LASSERT(pill != LP_POISON);
1982 LASSERT(fmt != NULL);
1983 LASSERT(fmt != LP_POISON);
1984 LASSERT(__req_format_is_sane(fmt));
1986 offset = __req_capsule_offset(pill, field, loc);
1988 msg = __req_msg(pill, loc);
1989 LASSERT(msg != NULL);
1991 getter = (field->rmf_flags & RMF_F_STRING) ?
1992 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1994 if (field->rmf_flags & (RMF_F_STRUCT_ARRAY|RMF_F_NO_SIZE_CHECK)) {
1996 * We've already asserted that field->rmf_size > 0 in
1997 * req_layout_init().
1999 len = lustre_msg_buflen(msg, offset);
2000 if (!(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2001 (len % field->rmf_size) != 0) {
2002 CERROR("%s: array field size mismatch "
2003 "%d modulo %u != 0 (%d)\n",
2004 field->rmf_name, len, field->rmf_size, loc);
2007 } else if (pill->rc_area[loc][offset] != -1) {
2008 len = pill->rc_area[loc][offset];
2010 len = max_t(typeof(field->rmf_size), field->rmf_size, 0);
2012 value = getter(msg, offset, len);
2014 if (value == NULL) {
2015 DEBUG_REQ(D_ERROR, pill->rc_req,
2016 "Wrong buffer for field `%s' (%u of %u) "
2017 "in format `%s': %u vs. %u (%s)\n",
2018 field->rmf_name, offset, lustre_msg_bufcount(msg),
2019 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
2022 swabber_dumper_helper(pill, field, loc, offset, value, len,
2030 * Dump a request and/or reply
2032 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
2034 const struct req_format *fmt;
2035 const struct req_msg_field *field;
2041 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
2042 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
2043 field = FMT_FIELD(fmt, loc, i);
2044 if (field->rmf_dumper == NULL) {
2046 * FIXME Add a default hex dumper for fields that don't
2047 * have a specific dumper
2049 len = req_capsule_get_size(pill, field, loc);
2050 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
2051 "field size is %u\n", field->rmf_name, len);
2053 /* It's the dumping side-effect that we're interested in */
2054 (void) __req_capsule_get(pill, field, loc, NULL, 1);
2057 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
2063 void req_capsule_client_dump(struct req_capsule *pill)
2065 __req_capsule_dump(pill, RCL_CLIENT);
2067 EXPORT_SYMBOL(req_capsule_client_dump);
2072 void req_capsule_server_dump(struct req_capsule *pill)
2074 __req_capsule_dump(pill, RCL_SERVER);
2076 EXPORT_SYMBOL(req_capsule_server_dump);
2079 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
2080 * buffer corresponding to the given RMF (\a field) of a \a pill.
2082 void *req_capsule_client_get(struct req_capsule *pill,
2083 const struct req_msg_field *field)
2085 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2087 EXPORT_SYMBOL(req_capsule_client_get);
2090 * Same as req_capsule_client_get(), but with a \a swabber argument.
2092 * Currently unused; will be removed when req_capsule_server_swab_get() is
2095 void *req_capsule_client_swab_get(struct req_capsule *pill,
2096 const struct req_msg_field *field,
2099 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
2101 EXPORT_SYMBOL(req_capsule_client_swab_get);
2104 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
2106 * First the \a pill's request \a field's size is set (\a rc_area) using
2107 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2110 void *req_capsule_client_sized_get(struct req_capsule *pill,
2111 const struct req_msg_field *field,
2114 req_capsule_set_size(pill, field, RCL_CLIENT, len);
2115 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2117 EXPORT_SYMBOL(req_capsule_client_sized_get);
2120 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
2121 * buffer corresponding to the given RMF (\a field) of a \a pill.
2123 void *req_capsule_server_get(struct req_capsule *pill,
2124 const struct req_msg_field *field)
2126 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2128 EXPORT_SYMBOL(req_capsule_server_get);
2131 * Same as req_capsule_server_get(), but with a \a swabber argument.
2133 * Ideally all swabbing should be done pursuant to RMF definitions, with no
2134 * swabbing done outside this capsule abstraction.
2136 void *req_capsule_server_swab_get(struct req_capsule *pill,
2137 const struct req_msg_field *field,
2140 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2142 EXPORT_SYMBOL(req_capsule_server_swab_get);
2145 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
2147 * First the \a pill's request \a field's size is set (\a rc_area) using
2148 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2151 void *req_capsule_server_sized_get(struct req_capsule *pill,
2152 const struct req_msg_field *field,
2155 req_capsule_set_size(pill, field, RCL_SERVER, len);
2156 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2158 EXPORT_SYMBOL(req_capsule_server_sized_get);
2160 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2161 const struct req_msg_field *field,
2162 __u32 len, void *swabber)
2164 req_capsule_set_size(pill, field, RCL_SERVER, len);
2165 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2167 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2170 * Returns the buffer of a \a pill corresponding to the given \a field from the
2171 * request (if the caller is executing on the server-side) or reply (if the
2172 * caller is executing on the client-side).
2174 * This function convienient for use is code that could be executed on the
2175 * client and server alike.
2177 const void *req_capsule_other_get(struct req_capsule *pill,
2178 const struct req_msg_field *field)
2180 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
2182 EXPORT_SYMBOL(req_capsule_other_get);
2185 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2186 * field of the given \a pill.
2188 * This function must be used when constructing variable sized fields of a
2191 void req_capsule_set_size(struct req_capsule *pill,
2192 const struct req_msg_field *field,
2193 enum req_location loc, __u32 size)
2195 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2197 if ((size != (__u32)field->rmf_size) &&
2198 (field->rmf_size != -1) &&
2199 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2201 __u32 rmf_size = (__u32)field->rmf_size;
2202 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2203 (size % rmf_size != 0)) {
2204 CERROR("%s: array field size mismatch "
2205 "%u %% %u != 0 (%d)\n",
2206 field->rmf_name, size, rmf_size, loc);
2208 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2210 CERROR("%s: field size mismatch %u != %u (%d)\n",
2211 field->rmf_name, size, rmf_size, loc);
2216 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2218 EXPORT_SYMBOL(req_capsule_set_size);
2221 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2222 * for the given \a pill's given \a field.
2224 * NB: this function doesn't correspond with req_capsule_set_size(), which
2225 * actually sets the size in pill.rc_area[loc][offset], but this function
2226 * returns the message buflen[offset], maybe we should use another name.
2228 __u32 req_capsule_get_size(const struct req_capsule *pill,
2229 const struct req_msg_field *field,
2230 enum req_location loc)
2232 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2234 return lustre_msg_buflen(__req_msg(pill, loc),
2235 __req_capsule_offset(pill, field, loc));
2237 EXPORT_SYMBOL(req_capsule_get_size);
2240 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2241 * given \a pill's request or reply (\a loc) given the field size recorded in
2242 * the \a pill's rc_area.
2244 * See also req_capsule_set_size().
2246 __u32 req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2248 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2249 pill->rc_fmt->rf_fields[loc].nr,
2250 pill->rc_area[loc]);
2254 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2255 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2256 * PTLRPC request or reply given only an RQF (\a fmt).
2258 * This function should not be used for formats which contain variable size
2261 __u32 req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2262 enum req_location loc)
2268 * This function should probably LASSERT() that fmt has no fields with
2269 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2270 * elements in the array there will ultimately be, but then, we could
2271 * assume that there will be at least one element, and that's just what
2274 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2278 for (; i < fmt->rf_fields[loc].nr; ++i)
2279 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2280 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2286 * Changes the format of an RPC.
2288 * The pill must already have been initialized, which means that it already has
2289 * a request format. The new format \a fmt must be an extension of the pill's
2290 * old format. Specifically: the new format must have as many request and reply
2291 * fields as the old one, and all fields shared by the old and new format must
2292 * be at least as large in the new format.
2294 * The new format's fields may be of different "type" than the old format, but
2295 * only for fields that are "opaque" blobs: fields which have a) have no
2296 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2297 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2298 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2299 * according to the key field. When the value, according to the key, contains a
2300 * structure (or array thereof) to be swabbed, the format should be changed to
2301 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2304 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2309 const struct req_format *old;
2311 LASSERT(pill->rc_fmt != NULL);
2312 LASSERT(__req_format_is_sane(fmt));
2316 * Sanity checking...
2318 for (i = 0; i < RCL_NR; ++i) {
2319 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2320 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2321 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2323 /* "opaque" fields can be transmogrified */
2324 if (ofield->rmf_swabber == NULL &&
2325 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2326 (ofield->rmf_size == -1 ||
2327 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2329 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2332 * Last field in old format can be shorter than in new.
2334 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2335 FMT_FIELD(old, i, j)->rmf_size);
2340 EXPORT_SYMBOL(req_capsule_extend);
2343 * This function returns a non-zero value if the given \a field is present in
2344 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2347 int req_capsule_has_field(const struct req_capsule *pill,
2348 const struct req_msg_field *field,
2349 enum req_location loc)
2351 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2353 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2355 EXPORT_SYMBOL(req_capsule_has_field);
2358 * Returns a non-zero value if the given \a field is present in the given \a
2359 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2361 int req_capsule_field_present(const struct req_capsule *pill,
2362 const struct req_msg_field *field,
2363 enum req_location loc)
2367 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2368 LASSERT(req_capsule_has_field(pill, field, loc));
2370 offset = __req_capsule_offset(pill, field, loc);
2371 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2373 EXPORT_SYMBOL(req_capsule_field_present);
2376 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2377 * request or reply (\a loc).
2379 * This is not the opposite of req_capsule_extend().
2381 void req_capsule_shrink(struct req_capsule *pill,
2382 const struct req_msg_field *field,
2384 enum req_location loc)
2386 const struct req_format *fmt;
2387 struct lustre_msg *msg;
2392 LASSERT(fmt != NULL);
2393 LASSERT(__req_format_is_sane(fmt));
2394 LASSERT(req_capsule_has_field(pill, field, loc));
2395 LASSERT(req_capsule_field_present(pill, field, loc));
2397 offset = __req_capsule_offset(pill, field, loc);
2399 msg = __req_msg(pill, loc);
2400 len = lustre_msg_buflen(msg, offset);
2401 LASSERTF(newlen <= len, "%s:%s, oldlen=%u, newlen=%u\n",
2402 fmt->rf_name, field->rmf_name, len, newlen);
2404 if (loc == RCL_CLIENT)
2405 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2408 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2411 EXPORT_SYMBOL(req_capsule_shrink);
2413 int req_capsule_server_grow(struct req_capsule *pill,
2414 const struct req_msg_field *field,
2417 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2422 LASSERT(pill->rc_fmt != NULL);
2423 LASSERT(__req_format_is_sane(pill->rc_fmt));
2424 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2425 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2427 len = req_capsule_get_size(pill, field, RCL_SERVER);
2428 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2429 if ((__u32)pill->rc_req->rq_repbuf_len >=
2430 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2431 CERROR("Inplace repack might be done\n");
2433 pill->rc_req->rq_reply_state = NULL;
2434 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2435 rc = req_capsule_server_pack(pill);
2437 /* put old rs back, the caller will decide what to do */
2438 pill->rc_req->rq_reply_state = rs;
2441 nrs = pill->rc_req->rq_reply_state;
2442 /* Now we need only buffers, copy first chunk */
2443 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2444 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2445 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2446 memcpy(to, from, len);
2447 /* check if we have tail and copy it too */
2448 if (rs->rs_msg->lm_bufcount > offset + 1) {
2449 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2450 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2451 offset = rs->rs_msg->lm_bufcount - 1;
2452 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2453 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2454 memcpy(to, from, len);
2456 /* drop old reply if everything is fine */
2457 if (rs->rs_difficult) {
2461 nrs->rs_difficult = 1;
2462 nrs->rs_no_ack = rs->rs_no_ack;
2463 for (i = 0; i < rs->rs_nlocks; i++) {
2464 nrs->rs_locks[i] = rs->rs_locks[i];
2465 nrs->rs_modes[i] = rs->rs_modes[i];
2469 rs->rs_difficult = 0;
2472 ptlrpc_rs_decref(rs);
2475 EXPORT_SYMBOL(req_capsule_server_grow);
2476 /* __REQ_LAYOUT_USER__ */