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, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/ptlrpc/layout.c
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Nikita Danilov <nikita@clusterfs.com>
43 * This file contains the "capsule/pill" abstraction layered above PTLRPC.
45 * Every struct ptlrpc_request contains a "pill", which points to a description
46 * of the format that the request conforms to.
49 #if !defined(__REQ_LAYOUT_USER__)
51 #define DEBUG_SUBSYSTEM S_RPC
54 #include <linux/module.h>
56 # include <liblustre.h>
59 /* LUSTRE_VERSION_CODE */
60 #include <lustre_ver.h>
62 #include <obd_support.h>
63 /* lustre_swab_mdt_body */
64 #include <lustre/lustre_idl.h>
65 /* obd2cli_tgt() (required by DEBUG_REQ()) */
68 /* __REQ_LAYOUT_USER__ */
70 /* struct ptlrpc_request, lustre_msg* */
71 #include <lustre_req_layout.h>
72 #include <lustre_update.h>
73 #include <lustre_acl.h>
74 #include <lustre_debug.h>
77 * RQFs (see below) refer to two struct req_msg_field arrays describing the
78 * client request and server reply, respectively.
80 /* empty set of fields... for suitable definition of emptiness. */
81 static const struct req_msg_field *empty[] = {
85 static const struct req_msg_field *mgs_target_info_only[] = {
90 static const struct req_msg_field *mgs_set_info[] = {
95 static const struct req_msg_field *mgs_config_read_client[] = {
100 static const struct req_msg_field *mgs_config_read_server[] = {
105 static const struct req_msg_field *log_cancel_client[] = {
110 static const struct req_msg_field *mdt_body_only[] = {
115 static const struct req_msg_field *mdt_body_capa[] = {
121 static const struct req_msg_field *quotactl_only[] = {
126 static const struct req_msg_field *quota_body_only[] = {
131 static const struct req_msg_field *ldlm_intent_quota_client[] = {
138 static const struct req_msg_field *ldlm_intent_quota_server[] = {
145 static const struct req_msg_field *mdt_close_client[] = {
152 static const struct req_msg_field *mdt_release_close_client[] = {
160 static const struct req_msg_field *obd_statfs_server[] = {
165 static const struct req_msg_field *seq_query_client[] = {
171 static const struct req_msg_field *seq_query_server[] = {
176 static const struct req_msg_field *fld_query_client[] = {
182 static const struct req_msg_field *fld_query_server[] = {
187 static const struct req_msg_field *mds_getattr_name_client[] = {
194 static const struct req_msg_field *mds_reint_client[] = {
199 static const struct req_msg_field *mds_reint_create_client[] = {
206 static const struct req_msg_field *mds_reint_create_slave_client[] = {
215 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
224 static const struct req_msg_field *mds_reint_create_sym_client[] = {
233 static const struct req_msg_field *mds_reint_open_client[] = {
242 static const struct req_msg_field *mds_reint_open_server[] = {
251 static const struct req_msg_field *mds_reint_unlink_client[] = {
259 static const struct req_msg_field *mds_reint_link_client[] = {
268 static const struct req_msg_field *mds_reint_rename_client[] = {
278 static const struct req_msg_field *mds_last_unlink_server[] = {
287 static const struct req_msg_field *mds_reint_setattr_client[] = {
297 static const struct req_msg_field *mds_reint_setxattr_client[] = {
306 static const struct req_msg_field *mdt_swap_layouts[] = {
315 static const struct req_msg_field *obd_connect_client[] = {
323 static const struct req_msg_field *obd_connect_server[] = {
328 static const struct req_msg_field *obd_set_info_client[] = {
334 static const struct req_msg_field *ost_grant_shrink_client[] = {
340 static const struct req_msg_field *mds_getinfo_client[] = {
346 static const struct req_msg_field *mds_getinfo_server[] = {
351 static const struct req_msg_field *ldlm_enqueue_client[] = {
356 static const struct req_msg_field *ldlm_enqueue_server[] = {
361 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
367 static const struct req_msg_field *ldlm_cp_callback_client[] = {
373 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
379 static const struct req_msg_field *ldlm_gl_callback_server[] = {
384 static const struct req_msg_field *ldlm_intent_basic_client[] = {
390 static const struct req_msg_field *ldlm_intent_client[] = {
397 static const struct req_msg_field *ldlm_intent_server[] = {
405 static const struct req_msg_field *ldlm_intent_layout_client[] = {
410 &RMF_EADATA /* for new layout to be set up */
412 static const struct req_msg_field *ldlm_intent_open_server[] = {
422 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
426 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
431 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
440 static const struct req_msg_field *ldlm_intent_create_client[] = {
444 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
450 static const struct req_msg_field *ldlm_intent_open_client[] = {
454 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
461 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
465 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
470 static const struct req_msg_field *ldlm_intent_getxattr_client[] = {
478 static const struct req_msg_field *ldlm_intent_getxattr_server[] = {
483 &RMF_ACL, /* for req_capsule_extend/mdt_intent_policy */
489 static const struct req_msg_field *mds_getxattr_client[] = {
497 static const struct req_msg_field *mds_getxattr_server[] = {
503 static const struct req_msg_field *mds_getattr_server[] = {
512 static const struct req_msg_field *mds_setattr_server[] = {
521 static const struct req_msg_field *mds_update_client[] = {
526 static const struct req_msg_field *mds_update_server[] = {
531 static const struct req_msg_field *llog_origin_handle_create_client[] = {
537 static const struct req_msg_field *llogd_body_only[] = {
542 static const struct req_msg_field *llog_log_hdr_only[] = {
547 static const struct req_msg_field *llogd_conn_body_only[] = {
552 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
558 static const struct req_msg_field *obd_idx_read_client[] = {
563 static const struct req_msg_field *obd_idx_read_server[] = {
568 static const struct req_msg_field *ost_body_only[] = {
573 static const struct req_msg_field *ost_body_capa[] = {
579 static const struct req_msg_field *ost_destroy_client[] = {
587 static const struct req_msg_field *ost_brw_client[] = {
595 static const struct req_msg_field *ost_brw_read_server[] = {
600 static const struct req_msg_field *ost_brw_write_server[] = {
606 static const struct req_msg_field *ost_get_info_generic_server[] = {
611 static const struct req_msg_field *ost_get_info_generic_client[] = {
616 static const struct req_msg_field *ost_get_last_id_server[] = {
621 static const struct req_msg_field *ost_get_last_fid_server[] = {
626 static const struct req_msg_field *ost_get_fiemap_client[] = {
632 static const struct req_msg_field *ost_get_fiemap_server[] = {
637 static const struct req_msg_field *mdt_hsm_progress[] = {
640 &RMF_MDS_HSM_PROGRESS,
643 static const struct req_msg_field *mdt_hsm_ct_register[] = {
646 &RMF_MDS_HSM_ARCHIVE,
649 static const struct req_msg_field *mdt_hsm_ct_unregister[] = {
654 static const struct req_msg_field *mdt_hsm_action_server[] = {
657 &RMF_MDS_HSM_CURRENT_ACTION,
660 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
666 static const struct req_msg_field *mdt_hsm_state_set[] = {
673 static const struct req_msg_field *mdt_hsm_request[] = {
676 &RMF_MDS_HSM_REQUEST,
677 &RMF_MDS_HSM_USER_ITEM,
681 static struct req_format *req_formats[] = {
688 &RQF_MGS_CONFIG_READ,
697 &RQF_MDS_GETATTR_NAME,
701 &RQF_MDS_RELEASE_CLOSE,
707 &RQF_MDS_DONE_WRITING,
709 &RQF_MDS_REINT_CREATE,
710 &RQF_MDS_REINT_CREATE_RMT_ACL,
711 &RQF_MDS_REINT_CREATE_SLAVE,
712 &RQF_MDS_REINT_CREATE_SYM,
714 &RQF_MDS_REINT_UNLINK,
716 &RQF_MDS_REINT_RENAME,
717 &RQF_MDS_REINT_SETATTR,
718 &RQF_MDS_REINT_SETXATTR,
721 &RQF_MDS_HSM_PROGRESS,
722 &RQF_MDS_HSM_CT_REGISTER,
723 &RQF_MDS_HSM_CT_UNREGISTER,
724 &RQF_MDS_HSM_STATE_GET,
725 &RQF_MDS_HSM_STATE_SET,
727 &RQF_MDS_HSM_REQUEST,
728 &RQF_MDS_SWAP_LAYOUTS,
744 &RQF_OST_SET_GRANT_INFO,
745 &RQF_OST_GET_INFO_GENERIC,
746 &RQF_OST_GET_INFO_LAST_ID,
747 &RQF_OST_GET_INFO_LAST_FID,
748 &RQF_OST_SET_INFO_LAST_FID,
749 &RQF_OST_GET_INFO_FIEMAP,
751 &RQF_LDLM_ENQUEUE_LVB,
755 &RQF_LDLM_CP_CALLBACK,
756 &RQF_LDLM_BL_CALLBACK,
757 &RQF_LDLM_GL_CALLBACK,
758 &RQF_LDLM_GL_DESC_CALLBACK,
760 &RQF_LDLM_INTENT_BASIC,
761 &RQF_LDLM_INTENT_LAYOUT,
762 &RQF_LDLM_INTENT_GETATTR,
763 &RQF_LDLM_INTENT_OPEN,
764 &RQF_LDLM_INTENT_CREATE,
765 &RQF_LDLM_INTENT_UNLINK,
766 &RQF_LDLM_INTENT_GETXATTR,
767 &RQF_LDLM_INTENT_QUOTA,
770 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
771 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
772 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
773 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
774 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
775 &RQF_LLOG_ORIGIN_CONNECT,
779 struct req_msg_field {
780 const __u32 rmf_flags;
781 const char *rmf_name;
783 * Field length. (-1) means "variable length". If the
784 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
785 * but the actual size must be a whole multiple of \a rmf_size.
788 void (*rmf_swabber)(void *);
789 void (*rmf_dumper)(void *);
790 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
795 * The field is a string, must be NUL-terminated.
797 RMF_F_STRING = 1 << 0,
799 * The field's buffer size need not match the declared \a rmf_size.
801 RMF_F_NO_SIZE_CHECK = 1 << 1,
803 * The field's buffer size must be a whole multiple of the declared \a
804 * rmf_size and the \a rmf_swabber function must work on the declared \a
805 * rmf_size worth of bytes.
807 RMF_F_STRUCT_ARRAY = 1 << 2
815 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
816 .rmf_name = (name), \
817 .rmf_flags = (flags), \
818 .rmf_size = (size), \
819 .rmf_swabber = (void (*)(void*))(swabber), \
820 .rmf_dumper = (void (*)(void*))(dumper) \
823 struct req_msg_field RMF_GENERIC_DATA =
824 DEFINE_MSGF("generic_data", 0,
826 EXPORT_SYMBOL(RMF_GENERIC_DATA);
828 struct req_msg_field RMF_MGS_TARGET_INFO =
829 DEFINE_MSGF("mgs_target_info", 0,
830 sizeof(struct mgs_target_info),
831 lustre_swab_mgs_target_info, NULL);
832 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
834 struct req_msg_field RMF_MGS_SEND_PARAM =
835 DEFINE_MSGF("mgs_send_param", 0,
836 sizeof(struct mgs_send_param),
838 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
840 struct req_msg_field RMF_MGS_CONFIG_BODY =
841 DEFINE_MSGF("mgs_config_read request", 0,
842 sizeof(struct mgs_config_body),
843 lustre_swab_mgs_config_body, NULL);
844 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
846 struct req_msg_field RMF_MGS_CONFIG_RES =
847 DEFINE_MSGF("mgs_config_read reply ", 0,
848 sizeof(struct mgs_config_res),
849 lustre_swab_mgs_config_res, NULL);
850 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
852 struct req_msg_field RMF_U32 =
853 DEFINE_MSGF("generic u32", 0,
854 sizeof(__u32), lustre_swab_generic_32s, NULL);
855 EXPORT_SYMBOL(RMF_U32);
857 struct req_msg_field RMF_SETINFO_VAL =
858 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
859 EXPORT_SYMBOL(RMF_SETINFO_VAL);
861 struct req_msg_field RMF_GETINFO_KEY =
862 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
863 EXPORT_SYMBOL(RMF_GETINFO_KEY);
865 struct req_msg_field RMF_GETINFO_VALLEN =
866 DEFINE_MSGF("getinfo_vallen", 0,
867 sizeof(__u32), lustre_swab_generic_32s, NULL);
868 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
870 struct req_msg_field RMF_GETINFO_VAL =
871 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
872 EXPORT_SYMBOL(RMF_GETINFO_VAL);
874 struct req_msg_field RMF_SEQ_OPC =
875 DEFINE_MSGF("seq_query_opc", 0,
876 sizeof(__u32), lustre_swab_generic_32s, NULL);
877 EXPORT_SYMBOL(RMF_SEQ_OPC);
879 struct req_msg_field RMF_SEQ_RANGE =
880 DEFINE_MSGF("seq_query_range", 0,
881 sizeof(struct lu_seq_range),
882 lustre_swab_lu_seq_range, NULL);
883 EXPORT_SYMBOL(RMF_SEQ_RANGE);
885 struct req_msg_field RMF_FLD_OPC =
886 DEFINE_MSGF("fld_query_opc", 0,
887 sizeof(__u32), lustre_swab_generic_32s, NULL);
888 EXPORT_SYMBOL(RMF_FLD_OPC);
890 struct req_msg_field RMF_FLD_MDFLD =
891 DEFINE_MSGF("fld_query_mdfld", 0,
892 sizeof(struct lu_seq_range),
893 lustre_swab_lu_seq_range, NULL);
894 EXPORT_SYMBOL(RMF_FLD_MDFLD);
896 struct req_msg_field RMF_MDT_BODY =
897 DEFINE_MSGF("mdt_body", 0,
898 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
899 EXPORT_SYMBOL(RMF_MDT_BODY);
901 struct req_msg_field RMF_OBD_QUOTACTL =
902 DEFINE_MSGF("obd_quotactl", 0,
903 sizeof(struct obd_quotactl),
904 lustre_swab_obd_quotactl, NULL);
905 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
907 struct req_msg_field RMF_QUOTA_BODY =
908 DEFINE_MSGF("quota_body", 0,
909 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
910 EXPORT_SYMBOL(RMF_QUOTA_BODY);
912 struct req_msg_field RMF_MDT_EPOCH =
913 DEFINE_MSGF("mdt_ioepoch", 0,
914 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
915 EXPORT_SYMBOL(RMF_MDT_EPOCH);
917 struct req_msg_field RMF_PTLRPC_BODY =
918 DEFINE_MSGF("ptlrpc_body", 0,
919 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
920 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
922 struct req_msg_field RMF_CLOSE_DATA =
923 DEFINE_MSGF("data_version", 0,
924 sizeof(struct close_data), lustre_swab_close_data, NULL);
925 EXPORT_SYMBOL(RMF_CLOSE_DATA);
927 struct req_msg_field RMF_OBD_STATFS =
928 DEFINE_MSGF("obd_statfs", 0,
929 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
930 EXPORT_SYMBOL(RMF_OBD_STATFS);
932 struct req_msg_field RMF_SETINFO_KEY =
933 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
934 EXPORT_SYMBOL(RMF_SETINFO_KEY);
936 struct req_msg_field RMF_NAME =
937 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
938 EXPORT_SYMBOL(RMF_NAME);
940 struct req_msg_field RMF_SYMTGT =
941 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
942 EXPORT_SYMBOL(RMF_SYMTGT);
944 struct req_msg_field RMF_TGTUUID =
945 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
947 EXPORT_SYMBOL(RMF_TGTUUID);
949 struct req_msg_field RMF_CLUUID =
950 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
952 EXPORT_SYMBOL(RMF_CLUUID);
954 struct req_msg_field RMF_STRING =
955 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
956 EXPORT_SYMBOL(RMF_STRING);
958 struct req_msg_field RMF_LLOGD_BODY =
959 DEFINE_MSGF("llogd_body", 0,
960 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
961 EXPORT_SYMBOL(RMF_LLOGD_BODY);
963 struct req_msg_field RMF_LLOG_LOG_HDR =
964 DEFINE_MSGF("llog_log_hdr", 0,
965 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
966 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
968 struct req_msg_field RMF_LLOGD_CONN_BODY =
969 DEFINE_MSGF("llogd_conn_body", 0,
970 sizeof(struct llogd_conn_body),
971 lustre_swab_llogd_conn_body, NULL);
972 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
975 * connection handle received in MDS_CONNECT request.
977 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
978 * that the client does not interpret at all.
980 struct req_msg_field RMF_CONN =
981 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
982 EXPORT_SYMBOL(RMF_CONN);
984 struct req_msg_field RMF_CONNECT_DATA =
986 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
987 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
988 sizeof(struct obd_connect_data),
990 /* For interoperability with 1.8 and 2.0 clients/servers.
991 * The RPC verification code allows larger RPC buffers, but not
992 * smaller buffers. Until we no longer need to keep compatibility
993 * with older servers/clients we can only check that the buffer
994 * size is at least as large as obd_connect_data_v1. That is not
995 * not in itself harmful, since the chance of just corrupting this
996 * field is low. See JIRA LU-16 for details. */
997 sizeof(struct obd_connect_data_v1),
999 lustre_swab_connect, NULL);
1000 EXPORT_SYMBOL(RMF_CONNECT_DATA);
1002 struct req_msg_field RMF_DLM_REQ =
1003 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
1004 sizeof(struct ldlm_request),
1005 lustre_swab_ldlm_request, NULL);
1006 EXPORT_SYMBOL(RMF_DLM_REQ);
1008 struct req_msg_field RMF_DLM_REP =
1009 DEFINE_MSGF("dlm_rep", 0,
1010 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
1011 EXPORT_SYMBOL(RMF_DLM_REP);
1013 struct req_msg_field RMF_LDLM_INTENT =
1014 DEFINE_MSGF("ldlm_intent", 0,
1015 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
1016 EXPORT_SYMBOL(RMF_LDLM_INTENT);
1018 struct req_msg_field RMF_DLM_LVB =
1019 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
1020 EXPORT_SYMBOL(RMF_DLM_LVB);
1022 struct req_msg_field RMF_DLM_GL_DESC =
1023 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
1024 lustre_swab_gl_desc, NULL);
1025 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
1027 struct req_msg_field RMF_MDT_MD =
1028 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
1029 EXPORT_SYMBOL(RMF_MDT_MD);
1031 struct req_msg_field RMF_REC_REINT =
1032 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
1033 lustre_swab_mdt_rec_reint, NULL);
1034 EXPORT_SYMBOL(RMF_REC_REINT);
1036 /* FIXME: this length should be defined as a macro */
1037 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
1039 EXPORT_SYMBOL(RMF_EADATA);
1041 struct req_msg_field RMF_EAVALS = DEFINE_MSGF("eavals", 0, -1, NULL, NULL);
1042 EXPORT_SYMBOL(RMF_EAVALS);
1044 struct req_msg_field RMF_ACL =
1045 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
1046 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
1047 EXPORT_SYMBOL(RMF_ACL);
1049 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
1050 struct req_msg_field RMF_LOGCOOKIES =
1051 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
1052 sizeof(struct llog_cookie), NULL, NULL);
1053 EXPORT_SYMBOL(RMF_LOGCOOKIES);
1055 struct req_msg_field RMF_CAPA1 =
1056 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1057 lustre_swab_lustre_capa, NULL);
1058 EXPORT_SYMBOL(RMF_CAPA1);
1060 struct req_msg_field RMF_CAPA2 =
1061 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1062 lustre_swab_lustre_capa, NULL);
1063 EXPORT_SYMBOL(RMF_CAPA2);
1065 struct req_msg_field RMF_LAYOUT_INTENT =
1066 DEFINE_MSGF("layout_intent", 0,
1067 sizeof(struct layout_intent), lustre_swab_layout_intent,
1069 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1072 * OST request field.
1074 struct req_msg_field RMF_OST_BODY =
1075 DEFINE_MSGF("ost_body", 0,
1076 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1077 EXPORT_SYMBOL(RMF_OST_BODY);
1079 struct req_msg_field RMF_OBD_IOOBJ =
1080 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1081 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1082 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1084 struct req_msg_field RMF_NIOBUF_REMOTE =
1085 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1086 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1088 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1090 struct req_msg_field RMF_RCS =
1091 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1092 lustre_swab_generic_32s, dump_rcs);
1093 EXPORT_SYMBOL(RMF_RCS);
1095 struct req_msg_field RMF_EAVALS_LENS =
1096 DEFINE_MSGF("eavals_lens", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1097 lustre_swab_generic_32s, NULL);
1098 EXPORT_SYMBOL(RMF_EAVALS_LENS);
1100 struct req_msg_field RMF_OBD_ID =
1101 DEFINE_MSGF("obd_id", 0,
1102 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
1103 EXPORT_SYMBOL(RMF_OBD_ID);
1105 struct req_msg_field RMF_FID =
1106 DEFINE_MSGF("fid", 0,
1107 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1108 EXPORT_SYMBOL(RMF_FID);
1110 struct req_msg_field RMF_OST_ID =
1111 DEFINE_MSGF("ost_id", 0,
1112 sizeof(struct ost_id), lustre_swab_ost_id, NULL);
1113 EXPORT_SYMBOL(RMF_OST_ID);
1115 struct req_msg_field RMF_FIEMAP_KEY =
1116 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1117 lustre_swab_fiemap, NULL);
1118 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1120 struct req_msg_field RMF_FIEMAP_VAL =
1121 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1122 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1124 struct req_msg_field RMF_IDX_INFO =
1125 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1126 lustre_swab_idx_info, NULL);
1127 EXPORT_SYMBOL(RMF_IDX_INFO);
1128 struct req_msg_field RMF_HSM_USER_STATE =
1129 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1130 lustre_swab_hsm_user_state, NULL);
1131 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1133 struct req_msg_field RMF_HSM_STATE_SET =
1134 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1135 lustre_swab_hsm_state_set, NULL);
1136 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1138 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1139 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1140 lustre_swab_hsm_progress_kernel, NULL);
1141 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1143 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1144 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1145 lustre_swab_hsm_current_action, NULL);
1146 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1148 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1149 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1150 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1152 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1154 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1155 DEFINE_MSGF("hsm_archive", 0,
1156 sizeof(__u32), lustre_swab_generic_32s, NULL);
1157 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1159 struct req_msg_field RMF_MDS_HSM_REQUEST =
1160 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1161 lustre_swab_hsm_request, NULL);
1162 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1164 struct req_msg_field RMF_UPDATE = DEFINE_MSGF("update", 0, -1,
1165 lustre_swab_update_buf, NULL);
1166 EXPORT_SYMBOL(RMF_UPDATE);
1168 struct req_msg_field RMF_UPDATE_REPLY = DEFINE_MSGF("update_reply", 0, -1,
1169 lustre_swab_update_reply_buf,
1171 EXPORT_SYMBOL(RMF_UPDATE_REPLY);
1173 struct req_msg_field RMF_SWAP_LAYOUTS =
1174 DEFINE_MSGF("swap_layouts", 0, sizeof(struct mdc_swap_layouts),
1175 lustre_swab_swap_layouts, NULL);
1176 EXPORT_SYMBOL(RMF_SWAP_LAYOUTS);
1182 const char *rf_name;
1186 const struct req_msg_field **d;
1187 } rf_fields[RCL_NR];
1190 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1204 #define DEFINE_REQ_FMT0(name, client, server) \
1205 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1207 struct req_format RQF_OBD_PING =
1208 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1209 EXPORT_SYMBOL(RQF_OBD_PING);
1211 struct req_format RQF_OBD_SET_INFO =
1212 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1213 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1215 /* Read index file through the network */
1216 struct req_format RQF_OBD_IDX_READ =
1217 DEFINE_REQ_FMT0("OBD_IDX_READ",
1218 obd_idx_read_client, obd_idx_read_server);
1219 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1221 struct req_format RQF_SEC_CTX =
1222 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1223 EXPORT_SYMBOL(RQF_SEC_CTX);
1225 struct req_format RQF_MGS_TARGET_REG =
1226 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1227 mgs_target_info_only);
1228 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1230 struct req_format RQF_MGS_SET_INFO =
1231 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1233 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1235 struct req_format RQF_MGS_CONFIG_READ =
1236 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1237 mgs_config_read_server);
1238 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1240 struct req_format RQF_SEQ_QUERY =
1241 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1242 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1244 struct req_format RQF_FLD_QUERY =
1245 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1246 EXPORT_SYMBOL(RQF_FLD_QUERY);
1248 struct req_format RQF_LOG_CANCEL =
1249 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1250 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1252 struct req_format RQF_MDS_QUOTACHECK =
1253 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1254 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1256 struct req_format RQF_OST_QUOTACHECK =
1257 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1258 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1260 struct req_format RQF_MDS_QUOTACTL =
1261 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1262 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1264 struct req_format RQF_OST_QUOTACTL =
1265 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1266 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1268 struct req_format RQF_QC_CALLBACK =
1269 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1270 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1272 struct req_format RQF_QUOTA_DQACQ =
1273 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1274 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1276 struct req_format RQF_LDLM_INTENT_QUOTA =
1277 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1278 ldlm_intent_quota_client,
1279 ldlm_intent_quota_server);
1280 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1282 struct req_format RQF_MDS_GETSTATUS =
1283 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1284 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1286 struct req_format RQF_MDS_STATFS =
1287 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1288 EXPORT_SYMBOL(RQF_MDS_STATFS);
1290 struct req_format RQF_MDS_SYNC =
1291 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1292 EXPORT_SYMBOL(RQF_MDS_SYNC);
1294 struct req_format RQF_MDS_GETATTR =
1295 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1296 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1298 struct req_format RQF_MDS_GETXATTR =
1299 DEFINE_REQ_FMT0("MDS_GETXATTR",
1300 mds_getxattr_client, mds_getxattr_server);
1301 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1303 struct req_format RQF_MDS_GETATTR_NAME =
1304 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1305 mds_getattr_name_client, mds_getattr_server);
1306 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1308 struct req_format RQF_MDS_REINT =
1309 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1310 EXPORT_SYMBOL(RQF_MDS_REINT);
1312 struct req_format RQF_MDS_REINT_CREATE =
1313 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1314 mds_reint_create_client, mdt_body_capa);
1315 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1317 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1318 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1319 mds_reint_create_rmt_acl_client, mdt_body_capa);
1320 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1322 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1323 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1324 mds_reint_create_slave_client, mdt_body_capa);
1325 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1327 struct req_format RQF_MDS_REINT_CREATE_SYM =
1328 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1329 mds_reint_create_sym_client, mdt_body_capa);
1330 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1332 struct req_format RQF_MDS_REINT_OPEN =
1333 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1334 mds_reint_open_client, mds_reint_open_server);
1335 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1337 struct req_format RQF_MDS_REINT_UNLINK =
1338 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1339 mds_last_unlink_server);
1340 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1342 struct req_format RQF_MDS_REINT_LINK =
1343 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1344 mds_reint_link_client, mdt_body_only);
1345 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1347 struct req_format RQF_MDS_REINT_RENAME =
1348 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1349 mds_last_unlink_server);
1350 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1352 struct req_format RQF_MDS_REINT_SETATTR =
1353 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1354 mds_reint_setattr_client, mds_setattr_server);
1355 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1357 struct req_format RQF_MDS_REINT_SETXATTR =
1358 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1359 mds_reint_setxattr_client, mdt_body_only);
1360 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1362 struct req_format RQF_MDS_CONNECT =
1363 DEFINE_REQ_FMT0("MDS_CONNECT",
1364 obd_connect_client, obd_connect_server);
1365 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1367 struct req_format RQF_MDS_DISCONNECT =
1368 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1369 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1371 struct req_format RQF_MDS_GET_INFO =
1372 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1373 mds_getinfo_server);
1374 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1376 struct req_format RQF_UPDATE_OBJ =
1377 DEFINE_REQ_FMT0("OBJECT_UPDATE_OBJ", mds_update_client,
1379 EXPORT_SYMBOL(RQF_UPDATE_OBJ);
1381 struct req_format RQF_LDLM_ENQUEUE =
1382 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1383 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1384 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1386 struct req_format RQF_LDLM_ENQUEUE_LVB =
1387 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1388 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1389 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1391 struct req_format RQF_LDLM_CONVERT =
1392 DEFINE_REQ_FMT0("LDLM_CONVERT",
1393 ldlm_enqueue_client, ldlm_enqueue_server);
1394 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1396 struct req_format RQF_LDLM_CANCEL =
1397 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1398 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1400 struct req_format RQF_LDLM_CALLBACK =
1401 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1402 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1404 struct req_format RQF_LDLM_CP_CALLBACK =
1405 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1406 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1408 struct req_format RQF_LDLM_BL_CALLBACK =
1409 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1410 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1412 struct req_format RQF_LDLM_GL_CALLBACK =
1413 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1414 ldlm_gl_callback_server);
1415 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1417 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1418 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1419 ldlm_gl_callback_server);
1420 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1422 struct req_format RQF_LDLM_INTENT_BASIC =
1423 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1424 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1425 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1427 struct req_format RQF_LDLM_INTENT =
1428 DEFINE_REQ_FMT0("LDLM_INTENT",
1429 ldlm_intent_client, ldlm_intent_server);
1430 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1432 struct req_format RQF_LDLM_INTENT_LAYOUT =
1433 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1434 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1435 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1437 struct req_format RQF_LDLM_INTENT_GETATTR =
1438 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1439 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1440 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1442 struct req_format RQF_LDLM_INTENT_OPEN =
1443 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1444 ldlm_intent_open_client, ldlm_intent_open_server);
1445 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1447 struct req_format RQF_LDLM_INTENT_CREATE =
1448 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1449 ldlm_intent_create_client, ldlm_intent_getattr_server);
1450 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1452 struct req_format RQF_LDLM_INTENT_UNLINK =
1453 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1454 ldlm_intent_unlink_client, ldlm_intent_server);
1455 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1457 struct req_format RQF_LDLM_INTENT_GETXATTR =
1458 DEFINE_REQ_FMT0("LDLM_INTENT_GETXATTR",
1459 ldlm_intent_getxattr_client,
1460 ldlm_intent_getxattr_server);
1461 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETXATTR);
1463 struct req_format RQF_MDS_CLOSE =
1464 DEFINE_REQ_FMT0("MDS_CLOSE",
1465 mdt_close_client, mds_last_unlink_server);
1466 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1468 struct req_format RQF_MDS_RELEASE_CLOSE =
1469 DEFINE_REQ_FMT0("MDS_CLOSE",
1470 mdt_release_close_client, mds_last_unlink_server);
1471 EXPORT_SYMBOL(RQF_MDS_RELEASE_CLOSE);
1473 struct req_format RQF_MDS_PIN =
1474 DEFINE_REQ_FMT0("MDS_PIN",
1475 mdt_body_capa, mdt_body_only);
1476 EXPORT_SYMBOL(RQF_MDS_PIN);
1478 struct req_format RQF_MDS_UNPIN =
1479 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1480 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1482 struct req_format RQF_MDS_DONE_WRITING =
1483 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1484 mdt_close_client, mdt_body_only);
1485 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1487 struct req_format RQF_MDS_READPAGE =
1488 DEFINE_REQ_FMT0("MDS_READPAGE",
1489 mdt_body_capa, mdt_body_only);
1490 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1492 struct req_format RQF_MDS_HSM_ACTION =
1493 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1494 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1496 struct req_format RQF_MDS_HSM_PROGRESS =
1497 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1498 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1500 struct req_format RQF_MDS_HSM_CT_REGISTER =
1501 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1502 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1504 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1505 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", mdt_hsm_ct_unregister, empty);
1506 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1508 struct req_format RQF_MDS_HSM_STATE_GET =
1509 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1510 mdt_body_capa, mdt_hsm_state_get_server);
1511 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1513 struct req_format RQF_MDS_HSM_STATE_SET =
1514 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1515 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1517 struct req_format RQF_MDS_HSM_REQUEST =
1518 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1519 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1521 struct req_format RQF_MDS_SWAP_LAYOUTS =
1522 DEFINE_REQ_FMT0("MDS_SWAP_LAYOUTS",
1523 mdt_swap_layouts, empty);
1524 EXPORT_SYMBOL(RQF_MDS_SWAP_LAYOUTS);
1526 /* This is for split */
1527 struct req_format RQF_MDS_WRITEPAGE =
1528 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1529 mdt_body_capa, mdt_body_only);
1530 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1532 struct req_format RQF_MDS_IS_SUBDIR =
1533 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1534 mdt_body_only, mdt_body_only);
1535 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1537 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1538 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1539 llog_origin_handle_create_client, llogd_body_only);
1540 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1542 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1543 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1544 llogd_body_only, llogd_body_only);
1545 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1547 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1548 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1549 llogd_body_only, llog_origin_handle_next_block_server);
1550 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1552 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1553 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1554 llogd_body_only, llog_origin_handle_next_block_server);
1555 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1557 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1558 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1559 llogd_body_only, llog_log_hdr_only);
1560 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1562 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1563 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1564 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1566 struct req_format RQF_CONNECT =
1567 DEFINE_REQ_FMT0("CONNECT", obd_connect_client, obd_connect_server);
1568 EXPORT_SYMBOL(RQF_CONNECT);
1570 struct req_format RQF_OST_CONNECT =
1571 DEFINE_REQ_FMT0("OST_CONNECT",
1572 obd_connect_client, obd_connect_server);
1573 EXPORT_SYMBOL(RQF_OST_CONNECT);
1575 struct req_format RQF_OST_DISCONNECT =
1576 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1577 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1579 struct req_format RQF_OST_GETATTR =
1580 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1581 EXPORT_SYMBOL(RQF_OST_GETATTR);
1583 struct req_format RQF_OST_SETATTR =
1584 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1585 EXPORT_SYMBOL(RQF_OST_SETATTR);
1587 struct req_format RQF_OST_CREATE =
1588 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1589 EXPORT_SYMBOL(RQF_OST_CREATE);
1591 struct req_format RQF_OST_PUNCH =
1592 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1593 EXPORT_SYMBOL(RQF_OST_PUNCH);
1595 struct req_format RQF_OST_SYNC =
1596 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1597 EXPORT_SYMBOL(RQF_OST_SYNC);
1599 struct req_format RQF_OST_DESTROY =
1600 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1601 EXPORT_SYMBOL(RQF_OST_DESTROY);
1603 struct req_format RQF_OST_BRW_READ =
1604 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1605 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1607 struct req_format RQF_OST_BRW_WRITE =
1608 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1609 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1611 struct req_format RQF_OST_STATFS =
1612 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1613 EXPORT_SYMBOL(RQF_OST_STATFS);
1615 struct req_format RQF_OST_SET_GRANT_INFO =
1616 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1618 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1620 struct req_format RQF_OST_GET_INFO_GENERIC =
1621 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1622 ost_get_info_generic_server);
1623 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1625 struct req_format RQF_OST_GET_INFO_LAST_ID =
1626 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1627 ost_get_last_id_server);
1628 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1630 struct req_format RQF_OST_GET_INFO_LAST_FID =
1631 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1632 ost_get_last_fid_server);
1633 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1635 struct req_format RQF_OST_SET_INFO_LAST_FID =
1636 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1638 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1640 struct req_format RQF_OST_GET_INFO_FIEMAP =
1641 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1642 ost_get_fiemap_server);
1643 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1645 #if !defined(__REQ_LAYOUT_USER__)
1647 /* Convenience macro */
1648 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1651 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1652 * field of RQFs and the \a rmf_offset field of RMFs.
1654 int req_layout_init(void)
1659 struct req_format *rf = NULL;
1661 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1662 rf = req_formats[i];
1664 for (j = 0; j < RCL_NR; ++j) {
1665 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1666 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1667 struct req_msg_field *field;
1669 field = (typeof(field))rf->rf_fields[j].d[k];
1670 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1671 || field->rmf_size > 0);
1672 LASSERT(field->rmf_offset[i][j] == 0);
1674 * k + 1 to detect unused format/field
1677 field->rmf_offset[i][j] = k + 1;
1683 EXPORT_SYMBOL(req_layout_init);
1685 void req_layout_fini(void)
1688 EXPORT_SYMBOL(req_layout_fini);
1691 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1693 * Actual/expected field sizes are set elsewhere in functions in this file:
1694 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1695 * req_capsule_msg_size(). The \a rc_area information is used by.
1696 * ptlrpc_request_set_replen().
1698 void req_capsule_init_area(struct req_capsule *pill)
1702 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1703 pill->rc_area[RCL_CLIENT][i] = -1;
1704 pill->rc_area[RCL_SERVER][i] = -1;
1707 EXPORT_SYMBOL(req_capsule_init_area);
1710 * Initialize a pill.
1712 * The \a location indicates whether the caller is executing on the client side
1713 * (RCL_CLIENT) or server side (RCL_SERVER)..
1715 void req_capsule_init(struct req_capsule *pill,
1716 struct ptlrpc_request *req,
1717 enum req_location location)
1719 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1722 * Today all capsules are embedded in ptlrpc_request structs,
1723 * but just in case that ever isn't the case, we don't reach
1724 * into req unless req != NULL and pill is the one embedded in
1727 * The req->rq_pill_init flag makes it safe to initialize a pill
1728 * twice, which might happen in the OST paths as a result of the
1729 * high-priority RPC queue getting peeked at before ost_handle()
1730 * handles an OST RPC.
1732 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1735 memset(pill, 0, sizeof *pill);
1737 pill->rc_loc = location;
1738 req_capsule_init_area(pill);
1740 if (req != NULL && pill == &req->rq_pill)
1741 req->rq_pill_init = 1;
1743 EXPORT_SYMBOL(req_capsule_init);
1745 void req_capsule_fini(struct req_capsule *pill)
1748 EXPORT_SYMBOL(req_capsule_fini);
1750 static int __req_format_is_sane(const struct req_format *fmt)
1753 0 <= fmt->rf_idx && 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 int 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 int __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_flags & RMF_F_STRUCT_ARRAY)) {
1891 if (dump && field->rmf_dumper) {
1892 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1893 do_swab ? "unswabbed " : "", field->rmf_name);
1894 field->rmf_dumper(value);
1899 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1900 if (dump && field->rmf_dumper) {
1901 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1902 "follows\n", field->rmf_name);
1903 field->rmf_dumper(value);
1910 * We're swabbing an array; swabber() swabs a single array element, so
1911 * swab every element.
1913 LASSERT((len % field->rmf_size) == 0);
1914 for (p = value, i = 0, n = len / field->rmf_size;
1916 i++, p += field->rmf_size) {
1917 if (dump && field->rmf_dumper) {
1918 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1919 "element %d follows\n",
1920 do_swab ? "unswabbed " : "", field->rmf_name, i);
1921 field->rmf_dumper(p);
1926 if (dump && field->rmf_dumper) {
1927 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1928 "element %d follows\n", field->rmf_name, i);
1929 field->rmf_dumper(value);
1933 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1937 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1938 * corresponding to the given RMF (\a field).
1940 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1941 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1942 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1943 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1944 * element of the array swabbed.
1946 static void *__req_capsule_get(struct req_capsule *pill,
1947 const struct req_msg_field *field,
1948 enum req_location loc,
1949 void (*swabber)( void *),
1952 const struct req_format *fmt;
1953 struct lustre_msg *msg;
1958 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1960 static const char *rcl_names[RCL_NR] = {
1961 [RCL_CLIENT] = "client",
1962 [RCL_SERVER] = "server"
1965 LASSERT(pill != NULL);
1966 LASSERT(pill != LP_POISON);
1968 LASSERT(fmt != NULL);
1969 LASSERT(fmt != LP_POISON);
1970 LASSERT(__req_format_is_sane(fmt));
1972 offset = __req_capsule_offset(pill, field, loc);
1974 msg = __req_msg(pill, loc);
1975 LASSERT(msg != NULL);
1977 getter = (field->rmf_flags & RMF_F_STRING) ?
1978 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1980 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1982 * We've already asserted that field->rmf_size > 0 in
1983 * req_layout_init().
1985 len = lustre_msg_buflen(msg, offset);
1986 if ((len % field->rmf_size) != 0) {
1987 CERROR("%s: array field size mismatch "
1988 "%d modulo %d != 0 (%d)\n",
1989 field->rmf_name, len, field->rmf_size, loc);
1992 } else if (pill->rc_area[loc][offset] != -1) {
1993 len = pill->rc_area[loc][offset];
1995 len = max(field->rmf_size, 0);
1997 value = getter(msg, offset, len);
1999 if (value == NULL) {
2000 DEBUG_REQ(D_ERROR, pill->rc_req,
2001 "Wrong buffer for field `%s' (%d of %d) "
2002 "in format `%s': %d vs. %d (%s)\n",
2003 field->rmf_name, offset, lustre_msg_bufcount(msg),
2004 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
2007 swabber_dumper_helper(pill, field, loc, offset, value, len,
2015 * Dump a request and/or reply
2017 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
2019 const struct req_format *fmt;
2020 const struct req_msg_field *field;
2026 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
2027 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
2028 field = FMT_FIELD(fmt, loc, i);
2029 if (field->rmf_dumper == NULL) {
2031 * FIXME Add a default hex dumper for fields that don't
2032 * have a specific dumper
2034 len = req_capsule_get_size(pill, field, loc);
2035 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
2036 "field size is %d\n", field->rmf_name, len);
2038 /* It's the dumping side-effect that we're interested in */
2039 (void) __req_capsule_get(pill, field, loc, NULL, 1);
2042 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
2048 void req_capsule_client_dump(struct req_capsule *pill)
2050 __req_capsule_dump(pill, RCL_CLIENT);
2052 EXPORT_SYMBOL(req_capsule_client_dump);
2057 void req_capsule_server_dump(struct req_capsule *pill)
2059 __req_capsule_dump(pill, RCL_SERVER);
2061 EXPORT_SYMBOL(req_capsule_server_dump);
2064 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
2065 * buffer corresponding to the given RMF (\a field) of a \a pill.
2067 void *req_capsule_client_get(struct req_capsule *pill,
2068 const struct req_msg_field *field)
2070 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2072 EXPORT_SYMBOL(req_capsule_client_get);
2075 * Same as req_capsule_client_get(), but with a \a swabber argument.
2077 * Currently unused; will be removed when req_capsule_server_swab_get() is
2080 void *req_capsule_client_swab_get(struct req_capsule *pill,
2081 const struct req_msg_field *field,
2084 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
2086 EXPORT_SYMBOL(req_capsule_client_swab_get);
2089 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
2091 * First the \a pill's request \a field's size is set (\a rc_area) using
2092 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2095 void *req_capsule_client_sized_get(struct req_capsule *pill,
2096 const struct req_msg_field *field,
2099 req_capsule_set_size(pill, field, RCL_CLIENT, len);
2100 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2102 EXPORT_SYMBOL(req_capsule_client_sized_get);
2105 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
2106 * buffer corresponding to the given RMF (\a field) of a \a pill.
2108 void *req_capsule_server_get(struct req_capsule *pill,
2109 const struct req_msg_field *field)
2111 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2113 EXPORT_SYMBOL(req_capsule_server_get);
2116 * Same as req_capsule_server_get(), but with a \a swabber argument.
2118 * Ideally all swabbing should be done pursuant to RMF definitions, with no
2119 * swabbing done outside this capsule abstraction.
2121 void *req_capsule_server_swab_get(struct req_capsule *pill,
2122 const struct req_msg_field *field,
2125 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2127 EXPORT_SYMBOL(req_capsule_server_swab_get);
2130 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
2132 * First the \a pill's request \a field's size is set (\a rc_area) using
2133 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2136 void *req_capsule_server_sized_get(struct req_capsule *pill,
2137 const struct req_msg_field *field,
2140 req_capsule_set_size(pill, field, RCL_SERVER, len);
2141 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2143 EXPORT_SYMBOL(req_capsule_server_sized_get);
2145 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2146 const struct req_msg_field *field,
2147 int len, void *swabber)
2149 req_capsule_set_size(pill, field, RCL_SERVER, len);
2150 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2152 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2155 * Returns the buffer of a \a pill corresponding to the given \a field from the
2156 * request (if the caller is executing on the server-side) or reply (if the
2157 * caller is executing on the client-side).
2159 * This function convienient for use is code that could be executed on the
2160 * client and server alike.
2162 const void *req_capsule_other_get(struct req_capsule *pill,
2163 const struct req_msg_field *field)
2165 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
2167 EXPORT_SYMBOL(req_capsule_other_get);
2170 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2171 * field of the given \a pill.
2173 * This function must be used when constructing variable sized fields of a
2176 void req_capsule_set_size(struct req_capsule *pill,
2177 const struct req_msg_field *field,
2178 enum req_location loc, int size)
2180 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2182 if ((size != field->rmf_size) &&
2183 (field->rmf_size != -1) &&
2184 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2186 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2187 (size % field->rmf_size != 0)) {
2188 CERROR("%s: array field size mismatch "
2189 "%d %% %d != 0 (%d)\n",
2190 field->rmf_name, size, field->rmf_size, loc);
2192 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2193 size < field->rmf_size) {
2194 CERROR("%s: field size mismatch %d != %d (%d)\n",
2195 field->rmf_name, size, field->rmf_size, loc);
2200 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2202 EXPORT_SYMBOL(req_capsule_set_size);
2205 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2206 * for the given \a pill's given \a field.
2208 * NB: this function doesn't correspond with req_capsule_set_size(), which
2209 * actually sets the size in pill.rc_area[loc][offset], but this function
2210 * returns the message buflen[offset], maybe we should use another name.
2212 int req_capsule_get_size(const struct req_capsule *pill,
2213 const struct req_msg_field *field,
2214 enum req_location loc)
2216 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2218 return lustre_msg_buflen(__req_msg(pill, loc),
2219 __req_capsule_offset(pill, field, loc));
2221 EXPORT_SYMBOL(req_capsule_get_size);
2224 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2225 * given \a pill's request or reply (\a loc) given the field size recorded in
2226 * the \a pill's rc_area.
2228 * See also req_capsule_set_size().
2230 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2232 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2233 pill->rc_fmt->rf_fields[loc].nr,
2234 pill->rc_area[loc]);
2238 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2239 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2240 * PTLRPC request or reply given only an RQF (\a fmt).
2242 * This function should not be used for formats which contain variable size
2245 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2246 enum req_location loc)
2251 * This function should probably LASSERT() that fmt has no fields with
2252 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2253 * elements in the array there will ultimately be, but then, we could
2254 * assume that there will be at least one element, and that's just what
2257 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2261 for (; i < fmt->rf_fields[loc].nr; ++i)
2262 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2263 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2269 * Changes the format of an RPC.
2271 * The pill must already have been initialized, which means that it already has
2272 * a request format. The new format \a fmt must be an extension of the pill's
2273 * old format. Specifically: the new format must have as many request and reply
2274 * fields as the old one, and all fields shared by the old and new format must
2275 * be at least as large in the new format.
2277 * The new format's fields may be of different "type" than the old format, but
2278 * only for fields that are "opaque" blobs: fields which have a) have no
2279 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2280 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2281 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2282 * according to the key field. When the value, according to the key, contains a
2283 * structure (or array thereof) to be swabbed, the format should be changed to
2284 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2287 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2292 const struct req_format *old;
2294 LASSERT(pill->rc_fmt != NULL);
2295 LASSERT(__req_format_is_sane(fmt));
2299 * Sanity checking...
2301 for (i = 0; i < RCL_NR; ++i) {
2302 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2303 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2304 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2306 /* "opaque" fields can be transmogrified */
2307 if (ofield->rmf_swabber == NULL &&
2308 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2309 (ofield->rmf_size == -1 ||
2310 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2312 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2315 * Last field in old format can be shorter than in new.
2317 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2318 FMT_FIELD(old, i, j)->rmf_size);
2323 EXPORT_SYMBOL(req_capsule_extend);
2326 * This function returns a non-zero value if the given \a field is present in
2327 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2330 int req_capsule_has_field(const struct req_capsule *pill,
2331 const struct req_msg_field *field,
2332 enum req_location loc)
2334 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2336 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2338 EXPORT_SYMBOL(req_capsule_has_field);
2341 * Returns a non-zero value if the given \a field is present in the given \a
2342 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2344 int req_capsule_field_present(const struct req_capsule *pill,
2345 const struct req_msg_field *field,
2346 enum req_location loc)
2350 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2351 LASSERT(req_capsule_has_field(pill, field, loc));
2353 offset = __req_capsule_offset(pill, field, loc);
2354 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2356 EXPORT_SYMBOL(req_capsule_field_present);
2359 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2360 * request or reply (\a loc).
2362 * This is not the opposite of req_capsule_extend().
2364 void req_capsule_shrink(struct req_capsule *pill,
2365 const struct req_msg_field *field,
2366 unsigned int newlen,
2367 enum req_location loc)
2369 const struct req_format *fmt;
2370 struct lustre_msg *msg;
2375 LASSERT(fmt != NULL);
2376 LASSERT(__req_format_is_sane(fmt));
2377 LASSERT(req_capsule_has_field(pill, field, loc));
2378 LASSERT(req_capsule_field_present(pill, field, loc));
2380 offset = __req_capsule_offset(pill, field, loc);
2382 msg = __req_msg(pill, loc);
2383 len = lustre_msg_buflen(msg, offset);
2384 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2385 fmt->rf_name, field->rmf_name, len, newlen);
2387 if (loc == RCL_CLIENT)
2388 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2391 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2394 EXPORT_SYMBOL(req_capsule_shrink);
2396 int req_capsule_server_grow(struct req_capsule *pill,
2397 const struct req_msg_field *field,
2398 unsigned int newlen)
2400 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2402 int offset, len, rc;
2404 LASSERT(pill->rc_fmt != NULL);
2405 LASSERT(__req_format_is_sane(pill->rc_fmt));
2406 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2407 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2409 len = req_capsule_get_size(pill, field, RCL_SERVER);
2410 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2411 if (pill->rc_req->rq_repbuf_len >=
2412 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2413 CERROR("Inplace repack might be done\n");
2415 pill->rc_req->rq_reply_state = NULL;
2416 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2417 rc = req_capsule_server_pack(pill);
2419 /* put old rs back, the caller will decide what to do */
2420 pill->rc_req->rq_reply_state = rs;
2423 nrs = pill->rc_req->rq_reply_state;
2424 /* Now we need only buffers, copy first chunk */
2425 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2426 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2427 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2428 memcpy(to, from, len);
2429 /* check if we have tail and copy it too */
2430 if (rs->rs_msg->lm_bufcount > offset + 1) {
2431 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2432 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2433 offset = rs->rs_msg->lm_bufcount - 1;
2434 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2435 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2436 memcpy(to, from, len);
2438 /* drop old reply if everything is fine */
2439 if (rs->rs_difficult) {
2443 nrs->rs_difficult = 1;
2444 nrs->rs_no_ack = rs->rs_no_ack;
2445 for (i = 0; i < rs->rs_nlocks; i++) {
2446 nrs->rs_locks[i] = rs->rs_locks[i];
2447 nrs->rs_modes[i] = rs->rs_modes[i];
2451 rs->rs_difficult = 0;
2454 ptlrpc_rs_decref(rs);
2457 EXPORT_SYMBOL(req_capsule_server_grow);
2458 /* __REQ_LAYOUT_USER__ */