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 #endif /* !__REQ_LAYOUT_USER__ */
66 /* struct ptlrpc_request, lustre_msg* */
67 #include <lustre_req_layout.h>
68 #include <lustre_acl.h>
71 * RQFs (see below) refer to two struct req_msg_field arrays describing the
72 * client request and server reply, respectively.
74 /* empty set of fields... for suitable definition of emptiness. */
75 static const struct req_msg_field *empty[] = {
79 static const struct req_msg_field *mgs_target_info_only[] = {
84 static const struct req_msg_field *mgs_set_info[] = {
89 static const struct req_msg_field *mgs_config_read_client[] = {
94 static const struct req_msg_field *mgs_config_read_server[] = {
99 static const struct req_msg_field *log_cancel_client[] = {
104 static const struct req_msg_field *mdt_body_only[] = {
109 static const struct req_msg_field *mdt_body_capa[] = {
115 static const struct req_msg_field *quotactl_only[] = {
120 static const struct req_msg_field *quota_body_only[] = {
125 static const struct req_msg_field *ldlm_intent_quota_client[] = {
132 static const struct req_msg_field *ldlm_intent_quota_server[] = {
139 static const struct req_msg_field *mdt_close_client[] = {
146 static const struct req_msg_field *mdt_intent_close_client[] = {
154 static const struct req_msg_field *obd_statfs_server[] = {
159 static const struct req_msg_field *seq_query_client[] = {
165 static const struct req_msg_field *seq_query_server[] = {
170 static const struct req_msg_field *fld_query_client[] = {
176 static const struct req_msg_field *fld_query_server[] = {
181 static const struct req_msg_field *fld_read_client[] = {
186 static const struct req_msg_field *fld_read_server[] = {
191 static const struct req_msg_field *mds_getattr_name_client[] = {
198 static const struct req_msg_field *mds_reint_client[] = {
203 static const struct req_msg_field *mds_reint_create_client[] = {
210 static const struct req_msg_field *mds_reint_create_slave_client[] = {
219 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
228 static const struct req_msg_field *mds_reint_create_sym_client[] = {
237 static const struct req_msg_field *mds_reint_open_client[] = {
246 static const struct req_msg_field *mds_reint_open_server[] = {
255 static const struct req_msg_field *mds_reint_unlink_client[] = {
263 static const struct req_msg_field *mds_reint_link_client[] = {
272 static const struct req_msg_field *mds_reint_rename_client[] = {
282 static const struct req_msg_field *mds_last_unlink_server[] = {
291 static const struct req_msg_field *mds_reint_setattr_client[] = {
301 static const struct req_msg_field *mds_reint_setxattr_client[] = {
310 static const struct req_msg_field *mdt_swap_layouts[] = {
319 static const struct req_msg_field *obd_connect_client[] = {
327 static const struct req_msg_field *obd_connect_server[] = {
332 static const struct req_msg_field *obd_set_info_client[] = {
338 static const struct req_msg_field *ost_grant_shrink_client[] = {
344 static const struct req_msg_field *mds_getinfo_client[] = {
350 static const struct req_msg_field *mds_getinfo_server[] = {
355 static const struct req_msg_field *ldlm_enqueue_client[] = {
360 static const struct req_msg_field *ldlm_enqueue_server[] = {
365 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
371 static const struct req_msg_field *ldlm_cp_callback_client[] = {
377 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
383 static const struct req_msg_field *ldlm_gl_callback_server[] = {
388 static const struct req_msg_field *ldlm_intent_basic_client[] = {
394 static const struct req_msg_field *ldlm_intent_client[] = {
401 static const struct req_msg_field *ldlm_intent_server[] = {
409 static const struct req_msg_field *ldlm_intent_layout_client[] = {
414 &RMF_EADATA /* for new layout to be set up */
416 static const struct req_msg_field *ldlm_intent_open_server[] = {
426 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
430 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
435 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
444 static const struct req_msg_field *ldlm_intent_create_client[] = {
448 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
454 static const struct req_msg_field *ldlm_intent_open_client[] = {
458 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
465 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
469 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
474 static const struct req_msg_field *ldlm_intent_getxattr_client[] = {
482 static const struct req_msg_field *ldlm_intent_getxattr_server[] = {
487 &RMF_ACL, /* for req_capsule_extend/mdt_intent_policy */
493 static const struct req_msg_field *mds_getxattr_client[] = {
501 static const struct req_msg_field *mds_getxattr_server[] = {
507 static const struct req_msg_field *mds_getattr_server[] = {
516 static const struct req_msg_field *mds_setattr_server[] = {
525 static const struct req_msg_field *mds_update_client[] = {
527 &RMF_OUT_UPDATE_HEADER,
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_INTENT_CLOSE,
726 &RQF_MDS_REINT_CREATE,
727 &RQF_MDS_REINT_CREATE_RMT_ACL,
728 &RQF_MDS_REINT_CREATE_SLAVE,
729 &RQF_MDS_REINT_CREATE_SYM,
731 &RQF_MDS_REINT_UNLINK,
733 &RQF_MDS_REINT_RENAME,
734 &RQF_MDS_REINT_SETATTR,
735 &RQF_MDS_REINT_SETXATTR,
737 &RQF_MDS_HSM_PROGRESS,
738 &RQF_MDS_HSM_CT_REGISTER,
739 &RQF_MDS_HSM_CT_UNREGISTER,
740 &RQF_MDS_HSM_STATE_GET,
741 &RQF_MDS_HSM_STATE_SET,
743 &RQF_MDS_HSM_REQUEST,
744 &RQF_MDS_SWAP_LAYOUTS,
758 &RQF_OST_SET_GRANT_INFO,
760 &RQF_OST_GET_INFO_LAST_ID,
761 &RQF_OST_GET_INFO_LAST_FID,
762 &RQF_OST_SET_INFO_LAST_FID,
763 &RQF_OST_GET_INFO_FIEMAP,
765 &RQF_LDLM_ENQUEUE_LVB,
769 &RQF_LDLM_CP_CALLBACK,
770 &RQF_LDLM_BL_CALLBACK,
771 &RQF_LDLM_GL_CALLBACK,
772 &RQF_LDLM_GL_DESC_CALLBACK,
774 &RQF_LDLM_INTENT_BASIC,
775 &RQF_LDLM_INTENT_LAYOUT,
776 &RQF_LDLM_INTENT_GETATTR,
777 &RQF_LDLM_INTENT_OPEN,
778 &RQF_LDLM_INTENT_CREATE,
779 &RQF_LDLM_INTENT_UNLINK,
780 &RQF_LDLM_INTENT_GETXATTR,
781 &RQF_LDLM_INTENT_QUOTA,
784 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
785 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
786 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
787 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
788 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
789 &RQF_LLOG_ORIGIN_CONNECT,
795 struct req_msg_field {
796 const __u32 rmf_flags;
797 const char *rmf_name;
799 * Field length. (-1) means "variable length". If the
800 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
801 * but the actual size must be a whole multiple of \a rmf_size.
804 void (*rmf_swabber)(void *);
805 void (*rmf_dumper)(void *);
806 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
811 * The field is a string, must be NUL-terminated.
813 RMF_F_STRING = 1 << 0,
815 * The field's buffer size need not match the declared \a rmf_size.
817 RMF_F_NO_SIZE_CHECK = 1 << 1,
819 * The field's buffer size must be a whole multiple of the declared \a
820 * rmf_size and the \a rmf_swabber function must work on the declared \a
821 * rmf_size worth of bytes.
823 RMF_F_STRUCT_ARRAY = 1 << 2
831 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
832 .rmf_name = (name), \
833 .rmf_flags = (flags), \
834 .rmf_size = (size), \
835 .rmf_swabber = (void (*)(void*))(swabber), \
836 .rmf_dumper = (void (*)(void*))(dumper) \
839 struct req_msg_field RMF_GENERIC_DATA =
840 DEFINE_MSGF("generic_data", 0,
842 EXPORT_SYMBOL(RMF_GENERIC_DATA);
844 struct req_msg_field RMF_MGS_TARGET_INFO =
845 DEFINE_MSGF("mgs_target_info", 0,
846 sizeof(struct mgs_target_info),
847 lustre_swab_mgs_target_info, NULL);
848 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
850 struct req_msg_field RMF_MGS_SEND_PARAM =
851 DEFINE_MSGF("mgs_send_param", 0,
852 sizeof(struct mgs_send_param),
854 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
856 struct req_msg_field RMF_MGS_CONFIG_BODY =
857 DEFINE_MSGF("mgs_config_read request", 0,
858 sizeof(struct mgs_config_body),
859 lustre_swab_mgs_config_body, NULL);
860 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
862 struct req_msg_field RMF_MGS_CONFIG_RES =
863 DEFINE_MSGF("mgs_config_read reply ", 0,
864 sizeof(struct mgs_config_res),
865 lustre_swab_mgs_config_res, NULL);
866 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
868 struct req_msg_field RMF_U32 =
869 DEFINE_MSGF("generic u32", 0,
870 sizeof(__u32), lustre_swab_generic_32s, NULL);
871 EXPORT_SYMBOL(RMF_U32);
873 struct req_msg_field RMF_SETINFO_VAL =
874 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
875 EXPORT_SYMBOL(RMF_SETINFO_VAL);
877 struct req_msg_field RMF_GETINFO_KEY =
878 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
879 EXPORT_SYMBOL(RMF_GETINFO_KEY);
881 struct req_msg_field RMF_GETINFO_VALLEN =
882 DEFINE_MSGF("getinfo_vallen", 0,
883 sizeof(__u32), lustre_swab_generic_32s, NULL);
884 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
886 struct req_msg_field RMF_GETINFO_VAL =
887 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
888 EXPORT_SYMBOL(RMF_GETINFO_VAL);
890 struct req_msg_field RMF_SEQ_OPC =
891 DEFINE_MSGF("seq_query_opc", 0,
892 sizeof(__u32), lustre_swab_generic_32s, NULL);
893 EXPORT_SYMBOL(RMF_SEQ_OPC);
895 struct req_msg_field RMF_SEQ_RANGE =
896 DEFINE_MSGF("seq_query_range", 0,
897 sizeof(struct lu_seq_range),
898 lustre_swab_lu_seq_range, NULL);
899 EXPORT_SYMBOL(RMF_SEQ_RANGE);
901 struct req_msg_field RMF_FLD_OPC =
902 DEFINE_MSGF("fld_query_opc", 0,
903 sizeof(__u32), lustre_swab_generic_32s, NULL);
904 EXPORT_SYMBOL(RMF_FLD_OPC);
906 struct req_msg_field RMF_FLD_MDFLD =
907 DEFINE_MSGF("fld_query_mdfld", 0,
908 sizeof(struct lu_seq_range),
909 lustre_swab_lu_seq_range, NULL);
910 EXPORT_SYMBOL(RMF_FLD_MDFLD);
912 struct req_msg_field RMF_MDT_BODY =
913 DEFINE_MSGF("mdt_body", 0,
914 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
915 EXPORT_SYMBOL(RMF_MDT_BODY);
917 struct req_msg_field RMF_OBD_QUOTACTL =
918 DEFINE_MSGF("obd_quotactl", 0,
919 sizeof(struct obd_quotactl),
920 lustre_swab_obd_quotactl, NULL);
921 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
923 struct req_msg_field RMF_QUOTA_BODY =
924 DEFINE_MSGF("quota_body", 0,
925 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
926 EXPORT_SYMBOL(RMF_QUOTA_BODY);
928 struct req_msg_field RMF_MDT_EPOCH =
929 DEFINE_MSGF("mdt_ioepoch", 0,
930 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
931 EXPORT_SYMBOL(RMF_MDT_EPOCH);
933 struct req_msg_field RMF_PTLRPC_BODY =
934 DEFINE_MSGF("ptlrpc_body", 0,
935 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
936 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
938 struct req_msg_field RMF_CLOSE_DATA =
939 DEFINE_MSGF("data_version", 0,
940 sizeof(struct close_data), lustre_swab_close_data, NULL);
941 EXPORT_SYMBOL(RMF_CLOSE_DATA);
943 struct req_msg_field RMF_OBD_STATFS =
944 DEFINE_MSGF("obd_statfs", 0,
945 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
946 EXPORT_SYMBOL(RMF_OBD_STATFS);
948 struct req_msg_field RMF_SETINFO_KEY =
949 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
950 EXPORT_SYMBOL(RMF_SETINFO_KEY);
952 struct req_msg_field RMF_NAME =
953 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
954 EXPORT_SYMBOL(RMF_NAME);
956 struct req_msg_field RMF_SYMTGT =
957 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
958 EXPORT_SYMBOL(RMF_SYMTGT);
960 struct req_msg_field RMF_TGTUUID =
961 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
963 EXPORT_SYMBOL(RMF_TGTUUID);
965 struct req_msg_field RMF_CLUUID =
966 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
968 EXPORT_SYMBOL(RMF_CLUUID);
970 struct req_msg_field RMF_STRING =
971 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
972 EXPORT_SYMBOL(RMF_STRING);
974 struct req_msg_field RMF_LLOGD_BODY =
975 DEFINE_MSGF("llogd_body", 0,
976 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
977 EXPORT_SYMBOL(RMF_LLOGD_BODY);
979 struct req_msg_field RMF_LLOG_LOG_HDR =
980 DEFINE_MSGF("llog_log_hdr", 0,
981 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
982 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
984 struct req_msg_field RMF_LLOGD_CONN_BODY =
985 DEFINE_MSGF("llogd_conn_body", 0,
986 sizeof(struct llogd_conn_body),
987 lustre_swab_llogd_conn_body, NULL);
988 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
991 * connection handle received in MDS_CONNECT request.
993 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
994 * that the client does not interpret at all.
996 struct req_msg_field RMF_CONN =
997 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
998 EXPORT_SYMBOL(RMF_CONN);
1000 struct req_msg_field RMF_CONNECT_DATA =
1001 DEFINE_MSGF("cdata",
1002 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
1003 sizeof(struct obd_connect_data),
1004 lustre_swab_connect, NULL);
1005 EXPORT_SYMBOL(RMF_CONNECT_DATA);
1007 struct req_msg_field RMF_DLM_REQ =
1008 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
1009 sizeof(struct ldlm_request),
1010 lustre_swab_ldlm_request, NULL);
1011 EXPORT_SYMBOL(RMF_DLM_REQ);
1013 struct req_msg_field RMF_DLM_REP =
1014 DEFINE_MSGF("dlm_rep", 0,
1015 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
1016 EXPORT_SYMBOL(RMF_DLM_REP);
1018 struct req_msg_field RMF_LDLM_INTENT =
1019 DEFINE_MSGF("ldlm_intent", 0,
1020 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
1021 EXPORT_SYMBOL(RMF_LDLM_INTENT);
1023 struct req_msg_field RMF_DLM_LVB =
1024 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
1025 EXPORT_SYMBOL(RMF_DLM_LVB);
1027 struct req_msg_field RMF_DLM_GL_DESC =
1028 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
1029 lustre_swab_gl_desc, NULL);
1030 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
1032 struct req_msg_field RMF_MDT_MD =
1033 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
1034 EXPORT_SYMBOL(RMF_MDT_MD);
1036 struct req_msg_field RMF_REC_REINT =
1037 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
1038 lustre_swab_mdt_rec_reint, NULL);
1039 EXPORT_SYMBOL(RMF_REC_REINT);
1041 /* FIXME: this length should be defined as a macro */
1042 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
1044 EXPORT_SYMBOL(RMF_EADATA);
1046 struct req_msg_field RMF_EAVALS = DEFINE_MSGF("eavals", 0, -1, NULL, NULL);
1047 EXPORT_SYMBOL(RMF_EAVALS);
1049 struct req_msg_field RMF_ACL =
1050 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
1051 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
1052 EXPORT_SYMBOL(RMF_ACL);
1054 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
1055 struct req_msg_field RMF_LOGCOOKIES =
1056 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
1057 sizeof(struct llog_cookie), NULL, NULL);
1058 EXPORT_SYMBOL(RMF_LOGCOOKIES);
1060 struct req_msg_field RMF_CAPA1 =
1061 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1062 lustre_swab_lustre_capa, NULL);
1063 EXPORT_SYMBOL(RMF_CAPA1);
1065 struct req_msg_field RMF_CAPA2 =
1066 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1067 lustre_swab_lustre_capa, NULL);
1068 EXPORT_SYMBOL(RMF_CAPA2);
1070 struct req_msg_field RMF_LAYOUT_INTENT =
1071 DEFINE_MSGF("layout_intent", 0,
1072 sizeof(struct layout_intent), lustre_swab_layout_intent,
1074 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1077 * OST request field.
1079 struct req_msg_field RMF_OST_BODY =
1080 DEFINE_MSGF("ost_body", 0,
1081 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1082 EXPORT_SYMBOL(RMF_OST_BODY);
1084 struct req_msg_field RMF_OBD_IOOBJ =
1085 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1086 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1087 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1089 struct req_msg_field RMF_NIOBUF_REMOTE =
1090 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1091 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1093 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1095 struct req_msg_field RMF_RCS =
1096 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1097 lustre_swab_generic_32s, dump_rcs);
1098 EXPORT_SYMBOL(RMF_RCS);
1100 struct req_msg_field RMF_EAVALS_LENS =
1101 DEFINE_MSGF("eavals_lens", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1102 lustre_swab_generic_32s, NULL);
1103 EXPORT_SYMBOL(RMF_EAVALS_LENS);
1105 struct req_msg_field RMF_OBD_ID =
1106 DEFINE_MSGF("obd_id", 0,
1107 sizeof(__u64), lustre_swab_ost_last_id, NULL);
1108 EXPORT_SYMBOL(RMF_OBD_ID);
1110 struct req_msg_field RMF_FID =
1111 DEFINE_MSGF("fid", 0,
1112 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1113 EXPORT_SYMBOL(RMF_FID);
1115 struct req_msg_field RMF_OST_ID =
1116 DEFINE_MSGF("ost_id", 0,
1117 sizeof(struct ost_id), lustre_swab_ost_id, NULL);
1118 EXPORT_SYMBOL(RMF_OST_ID);
1120 struct req_msg_field RMF_FIEMAP_KEY =
1121 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1122 lustre_swab_fiemap, NULL);
1123 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1125 struct req_msg_field RMF_FIEMAP_VAL =
1126 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1127 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1129 struct req_msg_field RMF_IDX_INFO =
1130 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1131 lustre_swab_idx_info, NULL);
1132 EXPORT_SYMBOL(RMF_IDX_INFO);
1133 struct req_msg_field RMF_HSM_USER_STATE =
1134 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1135 lustre_swab_hsm_user_state, NULL);
1136 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1138 struct req_msg_field RMF_HSM_STATE_SET =
1139 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1140 lustre_swab_hsm_state_set, NULL);
1141 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1143 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1144 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1145 lustre_swab_hsm_progress_kernel, NULL);
1146 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1148 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1149 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1150 lustre_swab_hsm_current_action, NULL);
1151 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1153 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1154 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1155 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1157 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1159 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1160 DEFINE_MSGF("hsm_archive", 0,
1161 sizeof(__u32), lustre_swab_generic_32s, NULL);
1162 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1164 struct req_msg_field RMF_MDS_HSM_REQUEST =
1165 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1166 lustre_swab_hsm_request, NULL);
1167 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1169 struct req_msg_field RMF_OUT_UPDATE = DEFINE_MSGF("object_update", 0, -1,
1170 lustre_swab_object_update_request, NULL);
1171 EXPORT_SYMBOL(RMF_OUT_UPDATE);
1173 struct req_msg_field RMF_OUT_UPDATE_REPLY =
1174 DEFINE_MSGF("object_update_reply", 0, -1,
1175 lustre_swab_object_update_reply, NULL);
1176 EXPORT_SYMBOL(RMF_OUT_UPDATE_REPLY);
1178 struct req_msg_field RMF_SWAP_LAYOUTS =
1179 DEFINE_MSGF("swap_layouts", 0, sizeof(struct mdc_swap_layouts),
1180 lustre_swab_swap_layouts, NULL);
1181 EXPORT_SYMBOL(RMF_SWAP_LAYOUTS);
1183 struct req_msg_field RMF_LFSCK_REQUEST =
1184 DEFINE_MSGF("lfsck_request", 0, sizeof(struct lfsck_request),
1185 lustre_swab_lfsck_request, NULL);
1186 EXPORT_SYMBOL(RMF_LFSCK_REQUEST);
1188 struct req_msg_field RMF_LFSCK_REPLY =
1189 DEFINE_MSGF("lfsck_reply", 0, sizeof(struct lfsck_reply),
1190 lustre_swab_lfsck_reply, NULL);
1191 EXPORT_SYMBOL(RMF_LFSCK_REPLY);
1193 struct req_msg_field RMF_OUT_UPDATE_HEADER = DEFINE_MSGF("out_update", 0,
1194 sizeof(struct out_update_header),
1195 lustre_swab_out_update_header, NULL);
1196 EXPORT_SYMBOL(RMF_OUT_UPDATE_HEADER);
1198 struct req_msg_field RMF_OUT_UPDATE_BUF = DEFINE_MSGF("update_buf",
1199 RMF_F_STRUCT_ARRAY, sizeof(struct out_update_buffer),
1200 lustre_swab_out_update_buffer, NULL);
1201 EXPORT_SYMBOL(RMF_OUT_UPDATE_BUF);
1208 const char *rf_name;
1212 const struct req_msg_field **d;
1213 } rf_fields[RCL_NR];
1216 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1230 #define DEFINE_REQ_FMT0(name, client, server) \
1231 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1233 struct req_format RQF_OBD_PING =
1234 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1235 EXPORT_SYMBOL(RQF_OBD_PING);
1237 struct req_format RQF_OBD_SET_INFO =
1238 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1239 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1241 /* Read index file through the network */
1242 struct req_format RQF_OBD_IDX_READ =
1243 DEFINE_REQ_FMT0("OBD_IDX_READ",
1244 obd_idx_read_client, obd_idx_read_server);
1245 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1247 struct req_format RQF_SEC_CTX =
1248 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1249 EXPORT_SYMBOL(RQF_SEC_CTX);
1251 struct req_format RQF_MGS_TARGET_REG =
1252 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1253 mgs_target_info_only);
1254 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1256 struct req_format RQF_MGS_SET_INFO =
1257 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1259 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1261 struct req_format RQF_MGS_CONFIG_READ =
1262 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1263 mgs_config_read_server);
1264 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1266 struct req_format RQF_SEQ_QUERY =
1267 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1268 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1270 struct req_format RQF_FLD_QUERY =
1271 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1272 EXPORT_SYMBOL(RQF_FLD_QUERY);
1274 struct req_format RQF_FLD_READ =
1275 DEFINE_REQ_FMT0("FLD_READ", fld_read_client, fld_read_server);
1276 EXPORT_SYMBOL(RQF_FLD_READ);
1278 struct req_format RQF_LOG_CANCEL =
1279 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1280 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1282 struct req_format RQF_MDS_QUOTACTL =
1283 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1284 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1286 struct req_format RQF_OST_QUOTACTL =
1287 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1288 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1290 struct req_format RQF_QUOTA_DQACQ =
1291 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1292 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1294 struct req_format RQF_LDLM_INTENT_QUOTA =
1295 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1296 ldlm_intent_quota_client,
1297 ldlm_intent_quota_server);
1298 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1300 struct req_format RQF_MDS_GETSTATUS =
1301 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1302 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1304 struct req_format RQF_MDS_STATFS =
1305 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1306 EXPORT_SYMBOL(RQF_MDS_STATFS);
1308 struct req_format RQF_MDS_SYNC =
1309 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1310 EXPORT_SYMBOL(RQF_MDS_SYNC);
1312 struct req_format RQF_MDS_GETATTR =
1313 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1314 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1316 struct req_format RQF_MDS_GETXATTR =
1317 DEFINE_REQ_FMT0("MDS_GETXATTR",
1318 mds_getxattr_client, mds_getxattr_server);
1319 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1321 struct req_format RQF_MDS_GETATTR_NAME =
1322 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1323 mds_getattr_name_client, mds_getattr_server);
1324 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1326 struct req_format RQF_MDS_REINT =
1327 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1328 EXPORT_SYMBOL(RQF_MDS_REINT);
1330 struct req_format RQF_MDS_REINT_CREATE =
1331 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1332 mds_reint_create_client, mdt_body_capa);
1333 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1335 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1336 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1337 mds_reint_create_rmt_acl_client, mdt_body_capa);
1338 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1340 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1341 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1342 mds_reint_create_slave_client, mdt_body_capa);
1343 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1345 struct req_format RQF_MDS_REINT_CREATE_SYM =
1346 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1347 mds_reint_create_sym_client, mdt_body_capa);
1348 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1350 struct req_format RQF_MDS_REINT_OPEN =
1351 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1352 mds_reint_open_client, mds_reint_open_server);
1353 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1355 struct req_format RQF_MDS_REINT_UNLINK =
1356 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1357 mds_last_unlink_server);
1358 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1360 struct req_format RQF_MDS_REINT_LINK =
1361 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1362 mds_reint_link_client, mdt_body_only);
1363 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1365 struct req_format RQF_MDS_REINT_RENAME =
1366 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1367 mds_last_unlink_server);
1368 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1370 struct req_format RQF_MDS_REINT_SETATTR =
1371 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1372 mds_reint_setattr_client, mds_setattr_server);
1373 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1375 struct req_format RQF_MDS_REINT_SETXATTR =
1376 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1377 mds_reint_setxattr_client, mdt_body_only);
1378 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1380 struct req_format RQF_MDS_CONNECT =
1381 DEFINE_REQ_FMT0("MDS_CONNECT",
1382 obd_connect_client, obd_connect_server);
1383 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1385 struct req_format RQF_MDS_DISCONNECT =
1386 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1387 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1389 struct req_format RQF_MDS_GET_INFO =
1390 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1391 mds_getinfo_server);
1392 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1394 struct req_format RQF_OUT_UPDATE =
1395 DEFINE_REQ_FMT0("OUT_UPDATE", mds_update_client,
1397 EXPORT_SYMBOL(RQF_OUT_UPDATE);
1399 struct req_format RQF_LDLM_ENQUEUE =
1400 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1401 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1402 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1404 struct req_format RQF_LDLM_ENQUEUE_LVB =
1405 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1406 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1407 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1409 struct req_format RQF_LDLM_CONVERT =
1410 DEFINE_REQ_FMT0("LDLM_CONVERT",
1411 ldlm_enqueue_client, ldlm_enqueue_server);
1412 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1414 struct req_format RQF_LDLM_CANCEL =
1415 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1416 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1418 struct req_format RQF_LDLM_CALLBACK =
1419 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1420 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1422 struct req_format RQF_LDLM_CP_CALLBACK =
1423 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1424 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1426 struct req_format RQF_LDLM_BL_CALLBACK =
1427 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1428 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1430 struct req_format RQF_LDLM_GL_CALLBACK =
1431 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1432 ldlm_gl_callback_server);
1433 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1435 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1436 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1437 ldlm_gl_callback_server);
1438 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1440 struct req_format RQF_LDLM_INTENT_BASIC =
1441 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1442 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1443 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1445 struct req_format RQF_LDLM_INTENT =
1446 DEFINE_REQ_FMT0("LDLM_INTENT",
1447 ldlm_intent_client, ldlm_intent_server);
1448 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1450 struct req_format RQF_LDLM_INTENT_LAYOUT =
1451 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1452 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1453 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1455 struct req_format RQF_LDLM_INTENT_GETATTR =
1456 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1457 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1458 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1460 struct req_format RQF_LDLM_INTENT_OPEN =
1461 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1462 ldlm_intent_open_client, ldlm_intent_open_server);
1463 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1465 struct req_format RQF_LDLM_INTENT_CREATE =
1466 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1467 ldlm_intent_create_client, ldlm_intent_getattr_server);
1468 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1470 struct req_format RQF_LDLM_INTENT_UNLINK =
1471 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1472 ldlm_intent_unlink_client, ldlm_intent_server);
1473 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1475 struct req_format RQF_LDLM_INTENT_GETXATTR =
1476 DEFINE_REQ_FMT0("LDLM_INTENT_GETXATTR",
1477 ldlm_intent_getxattr_client,
1478 ldlm_intent_getxattr_server);
1479 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETXATTR);
1481 struct req_format RQF_MDS_CLOSE =
1482 DEFINE_REQ_FMT0("MDS_CLOSE",
1483 mdt_close_client, mds_last_unlink_server);
1484 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1486 struct req_format RQF_MDS_INTENT_CLOSE =
1487 DEFINE_REQ_FMT0("MDS_CLOSE",
1488 mdt_intent_close_client, mds_last_unlink_server);
1489 EXPORT_SYMBOL(RQF_MDS_INTENT_CLOSE);
1491 struct req_format RQF_MDS_READPAGE =
1492 DEFINE_REQ_FMT0("MDS_READPAGE",
1493 mdt_body_capa, mdt_body_only);
1494 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1496 struct req_format RQF_MDS_HSM_ACTION =
1497 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1498 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1500 struct req_format RQF_MDS_HSM_PROGRESS =
1501 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1502 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1504 struct req_format RQF_MDS_HSM_CT_REGISTER =
1505 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1506 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1508 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1509 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", mdt_hsm_ct_unregister, empty);
1510 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1512 struct req_format RQF_MDS_HSM_STATE_GET =
1513 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1514 mdt_body_capa, mdt_hsm_state_get_server);
1515 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1517 struct req_format RQF_MDS_HSM_STATE_SET =
1518 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1519 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1521 struct req_format RQF_MDS_HSM_REQUEST =
1522 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1523 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1525 struct req_format RQF_MDS_SWAP_LAYOUTS =
1526 DEFINE_REQ_FMT0("MDS_SWAP_LAYOUTS",
1527 mdt_swap_layouts, empty);
1528 EXPORT_SYMBOL(RQF_MDS_SWAP_LAYOUTS);
1530 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1531 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1532 llog_origin_handle_create_client, llogd_body_only);
1533 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1535 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1536 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1537 llogd_body_only, llogd_body_only);
1538 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1540 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1541 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1542 llogd_body_only, llog_origin_handle_next_block_server);
1543 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1545 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1546 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1547 llogd_body_only, llog_origin_handle_next_block_server);
1548 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1550 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1551 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1552 llogd_body_only, llog_log_hdr_only);
1553 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1555 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1556 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1557 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1559 struct req_format RQF_CONNECT =
1560 DEFINE_REQ_FMT0("CONNECT", obd_connect_client, obd_connect_server);
1561 EXPORT_SYMBOL(RQF_CONNECT);
1563 struct req_format RQF_OST_CONNECT =
1564 DEFINE_REQ_FMT0("OST_CONNECT",
1565 obd_connect_client, obd_connect_server);
1566 EXPORT_SYMBOL(RQF_OST_CONNECT);
1568 struct req_format RQF_OST_DISCONNECT =
1569 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1570 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1572 struct req_format RQF_OST_GETATTR =
1573 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1574 EXPORT_SYMBOL(RQF_OST_GETATTR);
1576 struct req_format RQF_OST_SETATTR =
1577 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1578 EXPORT_SYMBOL(RQF_OST_SETATTR);
1580 struct req_format RQF_OST_CREATE =
1581 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1582 EXPORT_SYMBOL(RQF_OST_CREATE);
1584 struct req_format RQF_OST_PUNCH =
1585 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1586 EXPORT_SYMBOL(RQF_OST_PUNCH);
1588 struct req_format RQF_OST_SYNC =
1589 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1590 EXPORT_SYMBOL(RQF_OST_SYNC);
1592 struct req_format RQF_OST_DESTROY =
1593 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1594 EXPORT_SYMBOL(RQF_OST_DESTROY);
1596 struct req_format RQF_OST_BRW_READ =
1597 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1598 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1600 struct req_format RQF_OST_BRW_WRITE =
1601 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1602 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1604 struct req_format RQF_OST_STATFS =
1605 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1606 EXPORT_SYMBOL(RQF_OST_STATFS);
1608 struct req_format RQF_OST_SET_GRANT_INFO =
1609 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1611 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1613 struct req_format RQF_OST_GET_INFO =
1614 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1615 ost_get_info_generic_server);
1616 EXPORT_SYMBOL(RQF_OST_GET_INFO);
1618 struct req_format RQF_OST_GET_INFO_LAST_ID =
1619 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1620 ost_get_last_id_server);
1621 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1623 struct req_format RQF_OST_GET_INFO_LAST_FID =
1624 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", ost_get_last_fid_client,
1625 ost_get_last_fid_server);
1626 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1628 struct req_format RQF_OST_SET_INFO_LAST_FID =
1629 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1631 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1633 struct req_format RQF_OST_GET_INFO_FIEMAP =
1634 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1635 ost_get_fiemap_server);
1636 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1638 struct req_format RQF_LFSCK_NOTIFY =
1639 DEFINE_REQ_FMT0("LFSCK_NOTIFY", obd_lfsck_request, empty);
1640 EXPORT_SYMBOL(RQF_LFSCK_NOTIFY);
1642 struct req_format RQF_LFSCK_QUERY =
1643 DEFINE_REQ_FMT0("LFSCK_QUERY", obd_lfsck_request, obd_lfsck_reply);
1644 EXPORT_SYMBOL(RQF_LFSCK_QUERY);
1646 #if !defined(__REQ_LAYOUT_USER__)
1648 /* Convenience macro */
1649 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1652 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1653 * field of RQFs and the \a rmf_offset field of RMFs.
1655 int req_layout_init(void)
1660 struct req_format *rf = NULL;
1662 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1663 rf = req_formats[i];
1665 for (j = 0; j < RCL_NR; ++j) {
1666 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1667 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1668 struct req_msg_field *field;
1670 field = (typeof(field))rf->rf_fields[j].d[k];
1671 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1672 || field->rmf_size > 0);
1673 LASSERT(field->rmf_offset[i][j] == 0);
1675 * k + 1 to detect unused format/field
1678 field->rmf_offset[i][j] = k + 1;
1684 EXPORT_SYMBOL(req_layout_init);
1686 void req_layout_fini(void)
1689 EXPORT_SYMBOL(req_layout_fini);
1692 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1694 * Actual/expected field sizes are set elsewhere in functions in this file:
1695 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1696 * req_capsule_msg_size(). The \a rc_area information is used by.
1697 * ptlrpc_request_set_replen().
1699 void req_capsule_init_area(struct req_capsule *pill)
1703 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1704 pill->rc_area[RCL_CLIENT][i] = -1;
1705 pill->rc_area[RCL_SERVER][i] = -1;
1708 EXPORT_SYMBOL(req_capsule_init_area);
1711 * Initialize a pill.
1713 * The \a location indicates whether the caller is executing on the client side
1714 * (RCL_CLIENT) or server side (RCL_SERVER)..
1716 void req_capsule_init(struct req_capsule *pill,
1717 struct ptlrpc_request *req,
1718 enum req_location location)
1720 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1723 * Today all capsules are embedded in ptlrpc_request structs,
1724 * but just in case that ever isn't the case, we don't reach
1725 * into req unless req != NULL and pill is the one embedded in
1728 * The req->rq_pill_init flag makes it safe to initialize a pill
1729 * twice, which might happen in the OST paths as a result of the
1730 * high-priority RPC queue getting peeked at before ost_handle()
1731 * handles an OST RPC.
1733 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1736 memset(pill, 0, sizeof *pill);
1738 pill->rc_loc = location;
1739 req_capsule_init_area(pill);
1741 if (req != NULL && pill == &req->rq_pill)
1742 req->rq_pill_init = 1;
1744 EXPORT_SYMBOL(req_capsule_init);
1746 void req_capsule_fini(struct req_capsule *pill)
1749 EXPORT_SYMBOL(req_capsule_fini);
1751 static int __req_format_is_sane(const struct req_format *fmt)
1753 return fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1754 req_formats[fmt->rf_idx] == fmt;
1757 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1758 enum req_location loc)
1760 struct ptlrpc_request *req;
1763 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1767 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1768 * (see req_capsule_extend()).
1770 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1772 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1773 LASSERT(__req_format_is_sane(fmt));
1777 EXPORT_SYMBOL(req_capsule_set);
1780 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1783 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1784 * variable-sized fields. The field sizes come from the declared \a rmf_size
1785 * field of a \a pill's \a rc_fmt's RMF's.
1787 size_t req_capsule_filled_sizes(struct req_capsule *pill,
1788 enum req_location loc)
1790 const struct req_format *fmt = pill->rc_fmt;
1793 LASSERT(fmt != NULL);
1795 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1796 if (pill->rc_area[loc][i] == -1) {
1797 pill->rc_area[loc][i] =
1798 fmt->rf_fields[loc].d[i]->rmf_size;
1799 if (pill->rc_area[loc][i] == -1) {
1801 * Skip the following fields.
1803 * If this LASSERT() trips then you're missing a
1804 * call to req_capsule_set_size().
1806 LASSERT(loc != RCL_SERVER);
1813 EXPORT_SYMBOL(req_capsule_filled_sizes);
1816 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1818 * This function uses the \a pill's \a rc_area as filled in by
1819 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1822 int req_capsule_server_pack(struct req_capsule *pill)
1824 const struct req_format *fmt;
1828 LASSERT(pill->rc_loc == RCL_SERVER);
1830 LASSERT(fmt != NULL);
1832 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1833 rc = lustre_pack_reply(pill->rc_req, count,
1834 pill->rc_area[RCL_SERVER], NULL);
1836 DEBUG_REQ(D_ERROR, pill->rc_req,
1837 "Cannot pack %d fields in format `%s': ",
1838 count, fmt->rf_name);
1842 EXPORT_SYMBOL(req_capsule_server_pack);
1845 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1846 * corresponding to the given RMF (\a field).
1848 static __u32 __req_capsule_offset(const struct req_capsule *pill,
1849 const struct req_msg_field *field,
1850 enum req_location loc)
1854 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1855 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1856 pill->rc_fmt->rf_name,
1857 field->rmf_name, offset, loc);
1860 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1865 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1870 swabber_dumper_helper(struct req_capsule *pill,
1871 const struct req_msg_field *field,
1872 enum req_location loc,
1874 void *value, int len, int dump, void (*swabber)( void *))
1880 int inout = loc == RCL_CLIENT;
1882 swabber = swabber ?: field->rmf_swabber;
1884 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1885 swabber != NULL && value != NULL)
1890 if (!field->rmf_dumper)
1893 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1895 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1896 do_swab ? "unswabbed " : "", field->rmf_name);
1897 field->rmf_dumper(value);
1902 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1904 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1905 "follows\n", field->rmf_name);
1906 field->rmf_dumper(value);
1913 * We're swabbing an array; swabber() swabs a single array element, so
1914 * swab every element.
1916 LASSERT((len % field->rmf_size) == 0);
1917 for (p = value, i = 0, n = len / field->rmf_size;
1919 i++, p += field->rmf_size) {
1921 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1922 "element %d follows\n",
1923 do_swab ? "unswabbed " : "", field->rmf_name, i);
1924 field->rmf_dumper(p);
1930 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1931 "element %d follows\n", field->rmf_name, i);
1932 field->rmf_dumper(value);
1936 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1940 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1941 * corresponding to the given RMF (\a field).
1943 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1944 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1945 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1946 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1947 * element of the array swabbed.
1949 static void *__req_capsule_get(struct req_capsule *pill,
1950 const struct req_msg_field *field,
1951 enum req_location loc,
1952 void (*swabber)( void *),
1955 const struct req_format *fmt;
1956 struct lustre_msg *msg;
1961 void *(*getter)(struct lustre_msg *m, __u32 n, __u32 minlen);
1963 static const char *rcl_names[RCL_NR] = {
1964 [RCL_CLIENT] = "client",
1965 [RCL_SERVER] = "server"
1968 LASSERT(pill != NULL);
1969 LASSERT(pill != LP_POISON);
1971 LASSERT(fmt != NULL);
1972 LASSERT(fmt != LP_POISON);
1973 LASSERT(__req_format_is_sane(fmt));
1975 offset = __req_capsule_offset(pill, field, loc);
1977 msg = __req_msg(pill, loc);
1978 LASSERT(msg != NULL);
1980 getter = (field->rmf_flags & RMF_F_STRING) ?
1981 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1983 if (field->rmf_flags & (RMF_F_STRUCT_ARRAY|RMF_F_NO_SIZE_CHECK)) {
1985 * We've already asserted that field->rmf_size > 0 in
1986 * req_layout_init().
1988 len = lustre_msg_buflen(msg, offset);
1989 if (!(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
1990 (len % field->rmf_size) != 0) {
1991 CERROR("%s: array field size mismatch "
1992 "%d modulo %u != 0 (%d)\n",
1993 field->rmf_name, len, field->rmf_size, loc);
1996 } else if (pill->rc_area[loc][offset] != -1) {
1997 len = pill->rc_area[loc][offset];
1999 len = max_t(typeof(field->rmf_size), field->rmf_size, 0);
2001 value = getter(msg, offset, len);
2003 if (value == NULL) {
2004 DEBUG_REQ(D_ERROR, pill->rc_req,
2005 "Wrong buffer for field `%s' (%u of %u) "
2006 "in format `%s': %u vs. %u (%s)\n",
2007 field->rmf_name, offset, lustre_msg_bufcount(msg),
2008 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
2011 swabber_dumper_helper(pill, field, loc, offset, value, len,
2019 * Dump a request and/or reply
2021 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
2023 const struct req_format *fmt;
2024 const struct req_msg_field *field;
2030 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
2031 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
2032 field = FMT_FIELD(fmt, loc, i);
2033 if (field->rmf_dumper == NULL) {
2035 * FIXME Add a default hex dumper for fields that don't
2036 * have a specific dumper
2038 len = req_capsule_get_size(pill, field, loc);
2039 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
2040 "field size is %u\n", field->rmf_name, len);
2042 /* It's the dumping side-effect that we're interested in */
2043 (void) __req_capsule_get(pill, field, loc, NULL, 1);
2046 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
2052 void req_capsule_client_dump(struct req_capsule *pill)
2054 __req_capsule_dump(pill, RCL_CLIENT);
2056 EXPORT_SYMBOL(req_capsule_client_dump);
2061 void req_capsule_server_dump(struct req_capsule *pill)
2063 __req_capsule_dump(pill, RCL_SERVER);
2065 EXPORT_SYMBOL(req_capsule_server_dump);
2068 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
2069 * buffer corresponding to the given RMF (\a field) of a \a pill.
2071 void *req_capsule_client_get(struct req_capsule *pill,
2072 const struct req_msg_field *field)
2074 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2076 EXPORT_SYMBOL(req_capsule_client_get);
2079 * Same as req_capsule_client_get(), but with a \a swabber argument.
2081 * Currently unused; will be removed when req_capsule_server_swab_get() is
2084 void *req_capsule_client_swab_get(struct req_capsule *pill,
2085 const struct req_msg_field *field,
2088 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
2090 EXPORT_SYMBOL(req_capsule_client_swab_get);
2093 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
2095 * First the \a pill's request \a field's size is set (\a rc_area) using
2096 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2099 void *req_capsule_client_sized_get(struct req_capsule *pill,
2100 const struct req_msg_field *field,
2103 req_capsule_set_size(pill, field, RCL_CLIENT, len);
2104 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2106 EXPORT_SYMBOL(req_capsule_client_sized_get);
2109 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
2110 * buffer corresponding to the given RMF (\a field) of a \a pill.
2112 void *req_capsule_server_get(struct req_capsule *pill,
2113 const struct req_msg_field *field)
2115 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2117 EXPORT_SYMBOL(req_capsule_server_get);
2120 * Same as req_capsule_server_get(), but with a \a swabber argument.
2122 * Ideally all swabbing should be done pursuant to RMF definitions, with no
2123 * swabbing done outside this capsule abstraction.
2125 void *req_capsule_server_swab_get(struct req_capsule *pill,
2126 const struct req_msg_field *field,
2129 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2131 EXPORT_SYMBOL(req_capsule_server_swab_get);
2134 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
2136 * First the \a pill's request \a field's size is set (\a rc_area) using
2137 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2140 void *req_capsule_server_sized_get(struct req_capsule *pill,
2141 const struct req_msg_field *field,
2144 req_capsule_set_size(pill, field, RCL_SERVER, len);
2145 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2147 EXPORT_SYMBOL(req_capsule_server_sized_get);
2149 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2150 const struct req_msg_field *field,
2151 __u32 len, void *swabber)
2153 req_capsule_set_size(pill, field, RCL_SERVER, len);
2154 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2156 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2159 * Returns the buffer of a \a pill corresponding to the given \a field from the
2160 * request (if the caller is executing on the server-side) or reply (if the
2161 * caller is executing on the client-side).
2163 * This function convienient for use is code that could be executed on the
2164 * client and server alike.
2166 const void *req_capsule_other_get(struct req_capsule *pill,
2167 const struct req_msg_field *field)
2169 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
2171 EXPORT_SYMBOL(req_capsule_other_get);
2174 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2175 * field of the given \a pill.
2177 * This function must be used when constructing variable sized fields of a
2180 void req_capsule_set_size(struct req_capsule *pill,
2181 const struct req_msg_field *field,
2182 enum req_location loc, __u32 size)
2184 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2186 if ((size != (__u32)field->rmf_size) &&
2187 (field->rmf_size != -1) &&
2188 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2190 __u32 rmf_size = (__u32)field->rmf_size;
2191 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2192 (size % rmf_size != 0)) {
2193 CERROR("%s: array field size mismatch "
2194 "%u %% %u != 0 (%d)\n",
2195 field->rmf_name, size, rmf_size, loc);
2197 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2199 CERROR("%s: field size mismatch %u != %u (%d)\n",
2200 field->rmf_name, size, rmf_size, loc);
2205 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2207 EXPORT_SYMBOL(req_capsule_set_size);
2210 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2211 * for the given \a pill's given \a field.
2213 * NB: this function doesn't correspond with req_capsule_set_size(), which
2214 * actually sets the size in pill.rc_area[loc][offset], but this function
2215 * returns the message buflen[offset], maybe we should use another name.
2217 __u32 req_capsule_get_size(const struct req_capsule *pill,
2218 const struct req_msg_field *field,
2219 enum req_location loc)
2221 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2223 return lustre_msg_buflen(__req_msg(pill, loc),
2224 __req_capsule_offset(pill, field, loc));
2226 EXPORT_SYMBOL(req_capsule_get_size);
2229 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2230 * given \a pill's request or reply (\a loc) given the field size recorded in
2231 * the \a pill's rc_area.
2233 * See also req_capsule_set_size().
2235 __u32 req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2237 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2238 pill->rc_fmt->rf_fields[loc].nr,
2239 pill->rc_area[loc]);
2243 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2244 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2245 * PTLRPC request or reply given only an RQF (\a fmt).
2247 * This function should not be used for formats which contain variable size
2250 __u32 req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2251 enum req_location loc)
2257 * This function should probably LASSERT() that fmt has no fields with
2258 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2259 * elements in the array there will ultimately be, but then, we could
2260 * assume that there will be at least one element, and that's just what
2263 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2267 for (; i < fmt->rf_fields[loc].nr; ++i)
2268 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2269 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2275 * Changes the format of an RPC.
2277 * The pill must already have been initialized, which means that it already has
2278 * a request format. The new format \a fmt must be an extension of the pill's
2279 * old format. Specifically: the new format must have as many request and reply
2280 * fields as the old one, and all fields shared by the old and new format must
2281 * be at least as large in the new format.
2283 * The new format's fields may be of different "type" than the old format, but
2284 * only for fields that are "opaque" blobs: fields which have a) have no
2285 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2286 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2287 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2288 * according to the key field. When the value, according to the key, contains a
2289 * structure (or array thereof) to be swabbed, the format should be changed to
2290 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2293 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2298 const struct req_format *old;
2300 LASSERT(pill->rc_fmt != NULL);
2301 LASSERT(__req_format_is_sane(fmt));
2305 * Sanity checking...
2307 for (i = 0; i < RCL_NR; ++i) {
2308 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2309 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2310 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2312 /* "opaque" fields can be transmogrified */
2313 if (ofield->rmf_swabber == NULL &&
2314 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2315 (ofield->rmf_size == -1 ||
2316 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2318 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2321 * Last field in old format can be shorter than in new.
2323 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2324 FMT_FIELD(old, i, j)->rmf_size);
2329 EXPORT_SYMBOL(req_capsule_extend);
2332 * This function returns a non-zero value if the given \a field is present in
2333 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2336 int req_capsule_has_field(const struct req_capsule *pill,
2337 const struct req_msg_field *field,
2338 enum req_location loc)
2340 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2342 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2344 EXPORT_SYMBOL(req_capsule_has_field);
2347 * Returns a non-zero value if the given \a field is present in the given \a
2348 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2350 int req_capsule_field_present(const struct req_capsule *pill,
2351 const struct req_msg_field *field,
2352 enum req_location loc)
2356 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2357 LASSERT(req_capsule_has_field(pill, field, loc));
2359 offset = __req_capsule_offset(pill, field, loc);
2360 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2362 EXPORT_SYMBOL(req_capsule_field_present);
2365 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2366 * request or reply (\a loc).
2368 * This is not the opposite of req_capsule_extend().
2370 void req_capsule_shrink(struct req_capsule *pill,
2371 const struct req_msg_field *field,
2373 enum req_location loc)
2375 const struct req_format *fmt;
2376 struct lustre_msg *msg;
2381 LASSERT(fmt != NULL);
2382 LASSERT(__req_format_is_sane(fmt));
2383 LASSERT(req_capsule_has_field(pill, field, loc));
2384 LASSERT(req_capsule_field_present(pill, field, loc));
2386 offset = __req_capsule_offset(pill, field, loc);
2388 msg = __req_msg(pill, loc);
2389 len = lustre_msg_buflen(msg, offset);
2390 LASSERTF(newlen <= len, "%s:%s, oldlen=%u, newlen=%u\n",
2391 fmt->rf_name, field->rmf_name, len, newlen);
2393 if (loc == RCL_CLIENT)
2394 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2397 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2400 EXPORT_SYMBOL(req_capsule_shrink);
2402 int req_capsule_server_grow(struct req_capsule *pill,
2403 const struct req_msg_field *field,
2406 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2411 LASSERT(pill->rc_fmt != NULL);
2412 LASSERT(__req_format_is_sane(pill->rc_fmt));
2413 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2414 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2416 len = req_capsule_get_size(pill, field, RCL_SERVER);
2417 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2418 if ((__u32)pill->rc_req->rq_repbuf_len >=
2419 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2420 CERROR("Inplace repack might be done\n");
2422 pill->rc_req->rq_reply_state = NULL;
2423 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2424 rc = req_capsule_server_pack(pill);
2426 /* put old rs back, the caller will decide what to do */
2427 pill->rc_req->rq_reply_state = rs;
2430 nrs = pill->rc_req->rq_reply_state;
2431 /* Now we need only buffers, copy first chunk */
2432 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2433 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2434 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2435 memcpy(to, from, len);
2436 /* check if we have tail and copy it too */
2437 if (rs->rs_msg->lm_bufcount > offset + 1) {
2438 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2439 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2440 offset = rs->rs_msg->lm_bufcount - 1;
2441 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2442 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2443 memcpy(to, from, len);
2445 /* drop old reply if everything is fine */
2446 if (rs->rs_difficult) {
2450 nrs->rs_difficult = 1;
2451 nrs->rs_no_ack = rs->rs_no_ack;
2452 for (i = 0; i < rs->rs_nlocks; i++) {
2453 nrs->rs_locks[i] = rs->rs_locks[i];
2454 nrs->rs_modes[i] = rs->rs_modes[i];
2458 rs->rs_difficult = 0;
2461 ptlrpc_rs_decref(rs);
2464 EXPORT_SYMBOL(req_capsule_server_grow);
2465 /* __REQ_LAYOUT_USER__ */