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, 2012, 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_acl.h>
73 #include <lustre_debug.h>
76 * RQFs (see below) refer to two struct req_msg_field arrays describing the
77 * client request and server reply, respectively.
79 /* empty set of fields... for suitable definition of emptiness. */
80 static const struct req_msg_field *empty[] = {
84 static const struct req_msg_field *mgs_target_info_only[] = {
89 static const struct req_msg_field *mgs_set_info[] = {
94 static const struct req_msg_field *mgs_config_read_client[] = {
99 static const struct req_msg_field *mgs_config_read_server[] = {
104 static const struct req_msg_field *log_cancel_client[] = {
109 static const struct req_msg_field *mdt_body_only[] = {
114 static const struct req_msg_field *mdt_body_capa[] = {
120 static const struct req_msg_field *quotactl_only[] = {
125 static const struct req_msg_field *quota_body_only[] = {
130 static const struct req_msg_field *ldlm_intent_quota_client[] = {
137 static const struct req_msg_field *ldlm_intent_quota_server[] = {
144 static const struct req_msg_field *mdt_close_client[] = {
151 static const struct req_msg_field *obd_statfs_server[] = {
156 static const struct req_msg_field *seq_query_client[] = {
162 static const struct req_msg_field *seq_query_server[] = {
167 static const struct req_msg_field *fld_query_client[] = {
173 static const struct req_msg_field *fld_query_server[] = {
178 static const struct req_msg_field *mds_getattr_name_client[] = {
185 static const struct req_msg_field *mds_reint_client[] = {
190 static const struct req_msg_field *mds_reint_create_client[] = {
197 static const struct req_msg_field *mds_reint_create_slave_client[] = {
206 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
215 static const struct req_msg_field *mds_reint_create_sym_client[] = {
224 static const struct req_msg_field *mds_reint_open_client[] = {
233 static const struct req_msg_field *mds_reint_open_server[] = {
242 static const struct req_msg_field *mds_reint_unlink_client[] = {
250 static const struct req_msg_field *mds_reint_link_client[] = {
259 static const struct req_msg_field *mds_reint_rename_client[] = {
269 static const struct req_msg_field *mds_last_unlink_server[] = {
278 static const struct req_msg_field *mds_reint_setattr_client[] = {
288 static const struct req_msg_field *mds_reint_setxattr_client[] = {
296 static const struct req_msg_field *obd_connect_client[] = {
304 static const struct req_msg_field *obd_connect_server[] = {
309 static const struct req_msg_field *obd_set_info_client[] = {
315 static const struct req_msg_field *ost_grant_shrink_client[] = {
321 static const struct req_msg_field *mds_getinfo_client[] = {
327 static const struct req_msg_field *mds_getinfo_server[] = {
332 static const struct req_msg_field *ldlm_enqueue_client[] = {
337 static const struct req_msg_field *ldlm_enqueue_server[] = {
342 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
348 static const struct req_msg_field *ldlm_cp_callback_client[] = {
354 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
360 static const struct req_msg_field *ldlm_gl_callback_server[] = {
365 static const struct req_msg_field *ldlm_intent_basic_client[] = {
371 static const struct req_msg_field *ldlm_intent_client[] = {
378 static const struct req_msg_field *ldlm_intent_server[] = {
386 static const struct req_msg_field *ldlm_intent_layout_client[] = {
391 &RMF_EADATA /* for new layout to be set up */
393 static const struct req_msg_field *ldlm_intent_open_server[] = {
403 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
407 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
412 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
421 static const struct req_msg_field *ldlm_intent_create_client[] = {
425 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
431 static const struct req_msg_field *ldlm_intent_open_client[] = {
435 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
442 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
446 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
451 static const struct req_msg_field *mds_getxattr_client[] = {
459 static const struct req_msg_field *mds_getxattr_server[] = {
465 static const struct req_msg_field *mds_getattr_server[] = {
474 static const struct req_msg_field *mds_setattr_server[] = {
483 static const struct req_msg_field *llog_origin_handle_create_client[] = {
489 static const struct req_msg_field *llogd_body_only[] = {
494 static const struct req_msg_field *llog_log_hdr_only[] = {
499 static const struct req_msg_field *llogd_conn_body_only[] = {
504 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
510 static const struct req_msg_field *obd_idx_read_client[] = {
515 static const struct req_msg_field *obd_idx_read_server[] = {
520 static const struct req_msg_field *ost_body_only[] = {
525 static const struct req_msg_field *ost_body_capa[] = {
531 static const struct req_msg_field *ost_destroy_client[] = {
539 static const struct req_msg_field *ost_brw_client[] = {
547 static const struct req_msg_field *ost_brw_read_server[] = {
552 static const struct req_msg_field *ost_brw_write_server[] = {
558 static const struct req_msg_field *ost_get_info_generic_server[] = {
563 static const struct req_msg_field *ost_get_info_generic_client[] = {
568 static const struct req_msg_field *ost_get_last_id_server[] = {
573 static const struct req_msg_field *ost_get_last_fid_server[] = {
578 static const struct req_msg_field *ost_get_fiemap_client[] = {
584 static const struct req_msg_field *ost_get_fiemap_server[] = {
589 static const struct req_msg_field *mdt_hsm_progress[] = {
591 &RMF_MDS_HSM_PROGRESS,
594 static const struct req_msg_field *mdt_hsm_ct_register[] = {
596 &RMF_MDS_HSM_ARCHIVE,
599 static const struct req_msg_field *mdt_hsm_action_server[] = {
601 &RMF_MDS_HSM_CURRENT_ACTION,
604 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
609 static const struct req_msg_field *mdt_hsm_state_set[] = {
616 static struct req_format *req_formats[] = {
623 &RQF_MGS_CONFIG_READ,
632 &RQF_MDS_GETATTR_NAME,
641 &RQF_MDS_DONE_WRITING,
643 &RQF_MDS_REINT_CREATE,
644 &RQF_MDS_REINT_CREATE_RMT_ACL,
645 &RQF_MDS_REINT_CREATE_SLAVE,
646 &RQF_MDS_REINT_CREATE_SYM,
648 &RQF_MDS_REINT_UNLINK,
650 &RQF_MDS_REINT_RENAME,
651 &RQF_MDS_REINT_SETATTR,
652 &RQF_MDS_REINT_SETXATTR,
655 &RQF_MDS_HSM_PROGRESS,
656 &RQF_MDS_HSM_CT_REGISTER,
657 &RQF_MDS_HSM_CT_UNREGISTER,
658 &RQF_MDS_HSM_STATE_GET,
659 &RQF_MDS_HSM_STATE_SET,
675 &RQF_OST_SET_GRANT_INFO,
676 &RQF_OST_GET_INFO_GENERIC,
677 &RQF_OST_GET_INFO_LAST_ID,
678 &RQF_OST_GET_INFO_LAST_FID,
679 &RQF_OST_SET_INFO_LAST_FID,
680 &RQF_OST_GET_INFO_FIEMAP,
682 &RQF_LDLM_ENQUEUE_LVB,
686 &RQF_LDLM_CP_CALLBACK,
687 &RQF_LDLM_BL_CALLBACK,
688 &RQF_LDLM_GL_CALLBACK,
689 &RQF_LDLM_GL_DESC_CALLBACK,
691 &RQF_LDLM_INTENT_BASIC,
692 &RQF_LDLM_INTENT_LAYOUT,
693 &RQF_LDLM_INTENT_GETATTR,
694 &RQF_LDLM_INTENT_OPEN,
695 &RQF_LDLM_INTENT_CREATE,
696 &RQF_LDLM_INTENT_UNLINK,
697 &RQF_LDLM_INTENT_QUOTA,
700 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
701 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
702 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
703 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
704 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
705 &RQF_LLOG_ORIGIN_CONNECT
708 struct req_msg_field {
709 const __u32 rmf_flags;
710 const char *rmf_name;
712 * Field length. (-1) means "variable length". If the
713 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
714 * but the actual size must be a whole multiple of \a rmf_size.
717 void (*rmf_swabber)(void *);
718 void (*rmf_dumper)(void *);
719 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
724 * The field is a string, must be NUL-terminated.
726 RMF_F_STRING = 1 << 0,
728 * The field's buffer size need not match the declared \a rmf_size.
730 RMF_F_NO_SIZE_CHECK = 1 << 1,
732 * The field's buffer size must be a whole multiple of the declared \a
733 * rmf_size and the \a rmf_swabber function must work on the declared \a
734 * rmf_size worth of bytes.
736 RMF_F_STRUCT_ARRAY = 1 << 2
744 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
745 .rmf_name = (name), \
746 .rmf_flags = (flags), \
747 .rmf_size = (size), \
748 .rmf_swabber = (void (*)(void*))(swabber), \
749 .rmf_dumper = (void (*)(void*))(dumper) \
752 struct req_msg_field RMF_GENERIC_DATA =
753 DEFINE_MSGF("generic_data", 0,
755 EXPORT_SYMBOL(RMF_GENERIC_DATA);
757 struct req_msg_field RMF_MGS_TARGET_INFO =
758 DEFINE_MSGF("mgs_target_info", 0,
759 sizeof(struct mgs_target_info),
760 lustre_swab_mgs_target_info, NULL);
761 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
763 struct req_msg_field RMF_MGS_SEND_PARAM =
764 DEFINE_MSGF("mgs_send_param", 0,
765 sizeof(struct mgs_send_param),
767 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
769 struct req_msg_field RMF_MGS_CONFIG_BODY =
770 DEFINE_MSGF("mgs_config_read request", 0,
771 sizeof(struct mgs_config_body),
772 lustre_swab_mgs_config_body, NULL);
773 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
775 struct req_msg_field RMF_MGS_CONFIG_RES =
776 DEFINE_MSGF("mgs_config_read reply ", 0,
777 sizeof(struct mgs_config_res),
778 lustre_swab_mgs_config_res, NULL);
779 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
781 struct req_msg_field RMF_U32 =
782 DEFINE_MSGF("generic u32", 0,
783 sizeof(__u32), lustre_swab_generic_32s, NULL);
784 EXPORT_SYMBOL(RMF_U32);
786 struct req_msg_field RMF_SETINFO_VAL =
787 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
788 EXPORT_SYMBOL(RMF_SETINFO_VAL);
790 struct req_msg_field RMF_GETINFO_KEY =
791 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
792 EXPORT_SYMBOL(RMF_GETINFO_KEY);
794 struct req_msg_field RMF_GETINFO_VALLEN =
795 DEFINE_MSGF("getinfo_vallen", 0,
796 sizeof(__u32), lustre_swab_generic_32s, NULL);
797 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
799 struct req_msg_field RMF_GETINFO_VAL =
800 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
801 EXPORT_SYMBOL(RMF_GETINFO_VAL);
803 struct req_msg_field RMF_SEQ_OPC =
804 DEFINE_MSGF("seq_query_opc", 0,
805 sizeof(__u32), lustre_swab_generic_32s, NULL);
806 EXPORT_SYMBOL(RMF_SEQ_OPC);
808 struct req_msg_field RMF_SEQ_RANGE =
809 DEFINE_MSGF("seq_query_range", 0,
810 sizeof(struct lu_seq_range),
811 lustre_swab_lu_seq_range, NULL);
812 EXPORT_SYMBOL(RMF_SEQ_RANGE);
814 struct req_msg_field RMF_FLD_OPC =
815 DEFINE_MSGF("fld_query_opc", 0,
816 sizeof(__u32), lustre_swab_generic_32s, NULL);
817 EXPORT_SYMBOL(RMF_FLD_OPC);
819 struct req_msg_field RMF_FLD_MDFLD =
820 DEFINE_MSGF("fld_query_mdfld", 0,
821 sizeof(struct lu_seq_range),
822 lustre_swab_lu_seq_range, NULL);
823 EXPORT_SYMBOL(RMF_FLD_MDFLD);
825 struct req_msg_field RMF_MDT_BODY =
826 DEFINE_MSGF("mdt_body", 0,
827 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
828 EXPORT_SYMBOL(RMF_MDT_BODY);
830 struct req_msg_field RMF_OBD_QUOTACTL =
831 DEFINE_MSGF("obd_quotactl", 0,
832 sizeof(struct obd_quotactl),
833 lustre_swab_obd_quotactl, NULL);
834 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
836 struct req_msg_field RMF_QUOTA_BODY =
837 DEFINE_MSGF("quota_body", 0,
838 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
839 EXPORT_SYMBOL(RMF_QUOTA_BODY);
841 struct req_msg_field RMF_MDT_EPOCH =
842 DEFINE_MSGF("mdt_ioepoch", 0,
843 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
844 EXPORT_SYMBOL(RMF_MDT_EPOCH);
846 struct req_msg_field RMF_PTLRPC_BODY =
847 DEFINE_MSGF("ptlrpc_body", 0,
848 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
849 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
851 struct req_msg_field RMF_OBD_STATFS =
852 DEFINE_MSGF("obd_statfs", 0,
853 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
854 EXPORT_SYMBOL(RMF_OBD_STATFS);
856 struct req_msg_field RMF_SETINFO_KEY =
857 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
858 EXPORT_SYMBOL(RMF_SETINFO_KEY);
860 struct req_msg_field RMF_NAME =
861 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
862 EXPORT_SYMBOL(RMF_NAME);
864 struct req_msg_field RMF_SYMTGT =
865 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
866 EXPORT_SYMBOL(RMF_SYMTGT);
868 struct req_msg_field RMF_TGTUUID =
869 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
871 EXPORT_SYMBOL(RMF_TGTUUID);
873 struct req_msg_field RMF_CLUUID =
874 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
876 EXPORT_SYMBOL(RMF_CLUUID);
878 struct req_msg_field RMF_STRING =
879 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
880 EXPORT_SYMBOL(RMF_STRING);
882 struct req_msg_field RMF_LLOGD_BODY =
883 DEFINE_MSGF("llogd_body", 0,
884 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
885 EXPORT_SYMBOL(RMF_LLOGD_BODY);
887 struct req_msg_field RMF_LLOG_LOG_HDR =
888 DEFINE_MSGF("llog_log_hdr", 0,
889 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
890 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
892 struct req_msg_field RMF_LLOGD_CONN_BODY =
893 DEFINE_MSGF("llogd_conn_body", 0,
894 sizeof(struct llogd_conn_body),
895 lustre_swab_llogd_conn_body, NULL);
896 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
899 * connection handle received in MDS_CONNECT request.
901 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
902 * that the client does not interpret at all.
904 struct req_msg_field RMF_CONN =
905 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
906 EXPORT_SYMBOL(RMF_CONN);
908 struct req_msg_field RMF_CONNECT_DATA =
910 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
911 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
912 sizeof(struct obd_connect_data),
914 /* For interoperability with 1.8 and 2.0 clients/servers.
915 * The RPC verification code allows larger RPC buffers, but not
916 * smaller buffers. Until we no longer need to keep compatibility
917 * with older servers/clients we can only check that the buffer
918 * size is at least as large as obd_connect_data_v1. That is not
919 * not in itself harmful, since the chance of just corrupting this
920 * field is low. See JIRA LU-16 for details. */
921 sizeof(struct obd_connect_data_v1),
923 lustre_swab_connect, NULL);
924 EXPORT_SYMBOL(RMF_CONNECT_DATA);
926 struct req_msg_field RMF_DLM_REQ =
927 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
928 sizeof(struct ldlm_request),
929 lustre_swab_ldlm_request, NULL);
930 EXPORT_SYMBOL(RMF_DLM_REQ);
932 struct req_msg_field RMF_DLM_REP =
933 DEFINE_MSGF("dlm_rep", 0,
934 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
935 EXPORT_SYMBOL(RMF_DLM_REP);
937 struct req_msg_field RMF_LDLM_INTENT =
938 DEFINE_MSGF("ldlm_intent", 0,
939 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
940 EXPORT_SYMBOL(RMF_LDLM_INTENT);
942 struct req_msg_field RMF_DLM_LVB =
943 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
944 EXPORT_SYMBOL(RMF_DLM_LVB);
946 struct req_msg_field RMF_DLM_GL_DESC =
947 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
948 lustre_swab_gl_desc, NULL);
949 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
951 struct req_msg_field RMF_MDT_MD =
952 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
953 EXPORT_SYMBOL(RMF_MDT_MD);
955 struct req_msg_field RMF_REC_REINT =
956 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
957 lustre_swab_mdt_rec_reint, NULL);
958 EXPORT_SYMBOL(RMF_REC_REINT);
960 /* FIXME: this length should be defined as a macro */
961 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
963 EXPORT_SYMBOL(RMF_EADATA);
965 struct req_msg_field RMF_ACL =
966 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
967 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
968 EXPORT_SYMBOL(RMF_ACL);
970 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
971 struct req_msg_field RMF_LOGCOOKIES =
972 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
973 sizeof(struct llog_cookie), NULL, NULL);
974 EXPORT_SYMBOL(RMF_LOGCOOKIES);
976 struct req_msg_field RMF_CAPA1 =
977 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
978 lustre_swab_lustre_capa, NULL);
979 EXPORT_SYMBOL(RMF_CAPA1);
981 struct req_msg_field RMF_CAPA2 =
982 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
983 lustre_swab_lustre_capa, NULL);
984 EXPORT_SYMBOL(RMF_CAPA2);
986 struct req_msg_field RMF_LAYOUT_INTENT =
987 DEFINE_MSGF("layout_intent", 0,
988 sizeof(struct layout_intent), lustre_swab_layout_intent,
990 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
995 struct req_msg_field RMF_OST_BODY =
996 DEFINE_MSGF("ost_body", 0,
997 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
998 EXPORT_SYMBOL(RMF_OST_BODY);
1000 struct req_msg_field RMF_OBD_IOOBJ =
1001 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1002 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1003 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1005 struct req_msg_field RMF_NIOBUF_REMOTE =
1006 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1007 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1009 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1011 struct req_msg_field RMF_RCS =
1012 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1013 lustre_swab_generic_32s, dump_rcs);
1014 EXPORT_SYMBOL(RMF_RCS);
1016 struct req_msg_field RMF_OBD_ID =
1017 DEFINE_MSGF("obd_id", 0,
1018 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
1019 EXPORT_SYMBOL(RMF_OBD_ID);
1021 struct req_msg_field RMF_FID =
1022 DEFINE_MSGF("fid", 0,
1023 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1024 EXPORT_SYMBOL(RMF_FID);
1026 struct req_msg_field RMF_FIEMAP_KEY =
1027 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1028 lustre_swab_fiemap, NULL);
1029 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1031 struct req_msg_field RMF_FIEMAP_VAL =
1032 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1033 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1035 struct req_msg_field RMF_IDX_INFO =
1036 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1037 lustre_swab_idx_info, NULL);
1038 EXPORT_SYMBOL(RMF_IDX_INFO);
1039 struct req_msg_field RMF_HSM_USER_STATE =
1040 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1041 lustre_swab_hsm_user_state, NULL);
1042 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1044 struct req_msg_field RMF_HSM_STATE_SET =
1045 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1046 lustre_swab_hsm_state_set, NULL);
1047 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1049 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1050 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1051 lustre_swab_hsm_progress_kernel, NULL);
1052 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1054 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1055 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1056 lustre_swab_hsm_current_action, NULL);
1057 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1059 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1060 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1061 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1063 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1065 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1066 DEFINE_MSGF("hsm_archive", 0,
1067 sizeof(__u32), lustre_swab_generic_32s, NULL);
1068 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1075 const char *rf_name;
1079 const struct req_msg_field **d;
1080 } rf_fields[RCL_NR];
1083 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1097 #define DEFINE_REQ_FMT0(name, client, server) \
1098 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1100 struct req_format RQF_OBD_PING =
1101 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1102 EXPORT_SYMBOL(RQF_OBD_PING);
1104 struct req_format RQF_OBD_SET_INFO =
1105 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1106 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1108 /* Read index file through the network */
1109 struct req_format RQF_OBD_IDX_READ =
1110 DEFINE_REQ_FMT0("OBD_IDX_READ",
1111 obd_idx_read_client, obd_idx_read_server);
1112 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1114 struct req_format RQF_SEC_CTX =
1115 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1116 EXPORT_SYMBOL(RQF_SEC_CTX);
1118 struct req_format RQF_MGS_TARGET_REG =
1119 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1120 mgs_target_info_only);
1121 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1123 struct req_format RQF_MGS_SET_INFO =
1124 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1126 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1128 struct req_format RQF_MGS_CONFIG_READ =
1129 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1130 mgs_config_read_server);
1131 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1133 struct req_format RQF_SEQ_QUERY =
1134 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1135 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1137 struct req_format RQF_FLD_QUERY =
1138 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1139 EXPORT_SYMBOL(RQF_FLD_QUERY);
1141 struct req_format RQF_LOG_CANCEL =
1142 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1143 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1145 struct req_format RQF_MDS_QUOTACHECK =
1146 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1147 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1149 struct req_format RQF_OST_QUOTACHECK =
1150 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1151 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1153 struct req_format RQF_MDS_QUOTACTL =
1154 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1155 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1157 struct req_format RQF_OST_QUOTACTL =
1158 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1159 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1161 struct req_format RQF_QC_CALLBACK =
1162 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1163 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1165 struct req_format RQF_QUOTA_DQACQ =
1166 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1167 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1169 struct req_format RQF_LDLM_INTENT_QUOTA =
1170 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1171 ldlm_intent_quota_client,
1172 ldlm_intent_quota_server);
1173 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1175 struct req_format RQF_MDS_GETSTATUS =
1176 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1177 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1179 struct req_format RQF_MDS_STATFS =
1180 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1181 EXPORT_SYMBOL(RQF_MDS_STATFS);
1183 struct req_format RQF_MDS_SYNC =
1184 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1185 EXPORT_SYMBOL(RQF_MDS_SYNC);
1187 struct req_format RQF_MDS_GETATTR =
1188 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1189 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1191 struct req_format RQF_MDS_GETXATTR =
1192 DEFINE_REQ_FMT0("MDS_GETXATTR",
1193 mds_getxattr_client, mds_getxattr_server);
1194 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1196 struct req_format RQF_MDS_GETATTR_NAME =
1197 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1198 mds_getattr_name_client, mds_getattr_server);
1199 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1201 struct req_format RQF_MDS_REINT =
1202 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1203 EXPORT_SYMBOL(RQF_MDS_REINT);
1205 struct req_format RQF_MDS_REINT_CREATE =
1206 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1207 mds_reint_create_client, mdt_body_capa);
1208 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1210 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1211 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1212 mds_reint_create_rmt_acl_client, mdt_body_capa);
1213 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1215 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1216 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1217 mds_reint_create_slave_client, mdt_body_capa);
1218 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1220 struct req_format RQF_MDS_REINT_CREATE_SYM =
1221 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1222 mds_reint_create_sym_client, mdt_body_capa);
1223 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1225 struct req_format RQF_MDS_REINT_OPEN =
1226 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1227 mds_reint_open_client, mds_reint_open_server);
1228 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1230 struct req_format RQF_MDS_REINT_UNLINK =
1231 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1232 mds_last_unlink_server);
1233 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1235 struct req_format RQF_MDS_REINT_LINK =
1236 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1237 mds_reint_link_client, mdt_body_only);
1238 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1240 struct req_format RQF_MDS_REINT_RENAME =
1241 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1242 mds_last_unlink_server);
1243 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1245 struct req_format RQF_MDS_REINT_SETATTR =
1246 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1247 mds_reint_setattr_client, mds_setattr_server);
1248 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1250 struct req_format RQF_MDS_REINT_SETXATTR =
1251 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1252 mds_reint_setxattr_client, mdt_body_only);
1253 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1255 struct req_format RQF_MDS_CONNECT =
1256 DEFINE_REQ_FMT0("MDS_CONNECT",
1257 obd_connect_client, obd_connect_server);
1258 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1260 struct req_format RQF_MDS_DISCONNECT =
1261 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1262 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1264 struct req_format RQF_MDS_GET_INFO =
1265 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1266 mds_getinfo_server);
1267 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1269 struct req_format RQF_LDLM_ENQUEUE =
1270 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1271 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1272 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1274 struct req_format RQF_LDLM_ENQUEUE_LVB =
1275 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1276 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1277 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1279 struct req_format RQF_LDLM_CONVERT =
1280 DEFINE_REQ_FMT0("LDLM_CONVERT",
1281 ldlm_enqueue_client, ldlm_enqueue_server);
1282 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1284 struct req_format RQF_LDLM_CANCEL =
1285 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1286 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1288 struct req_format RQF_LDLM_CALLBACK =
1289 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1290 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1292 struct req_format RQF_LDLM_CP_CALLBACK =
1293 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1294 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1296 struct req_format RQF_LDLM_BL_CALLBACK =
1297 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1298 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1300 struct req_format RQF_LDLM_GL_CALLBACK =
1301 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1302 ldlm_gl_callback_server);
1303 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1305 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1306 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1307 ldlm_gl_callback_server);
1308 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1310 struct req_format RQF_LDLM_INTENT_BASIC =
1311 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1312 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1313 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1315 struct req_format RQF_LDLM_INTENT =
1316 DEFINE_REQ_FMT0("LDLM_INTENT",
1317 ldlm_intent_client, ldlm_intent_server);
1318 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1320 struct req_format RQF_LDLM_INTENT_LAYOUT =
1321 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1322 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1323 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1325 struct req_format RQF_LDLM_INTENT_GETATTR =
1326 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1327 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1328 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1330 struct req_format RQF_LDLM_INTENT_OPEN =
1331 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1332 ldlm_intent_open_client, ldlm_intent_open_server);
1333 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1335 struct req_format RQF_LDLM_INTENT_CREATE =
1336 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1337 ldlm_intent_create_client, ldlm_intent_getattr_server);
1338 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1340 struct req_format RQF_LDLM_INTENT_UNLINK =
1341 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1342 ldlm_intent_unlink_client, ldlm_intent_server);
1343 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1345 struct req_format RQF_MDS_CLOSE =
1346 DEFINE_REQ_FMT0("MDS_CLOSE",
1347 mdt_close_client, mds_last_unlink_server);
1348 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1350 struct req_format RQF_MDS_PIN =
1351 DEFINE_REQ_FMT0("MDS_PIN",
1352 mdt_body_capa, mdt_body_only);
1353 EXPORT_SYMBOL(RQF_MDS_PIN);
1355 struct req_format RQF_MDS_UNPIN =
1356 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1357 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1359 struct req_format RQF_MDS_DONE_WRITING =
1360 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1361 mdt_close_client, mdt_body_only);
1362 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1364 struct req_format RQF_MDS_READPAGE =
1365 DEFINE_REQ_FMT0("MDS_READPAGE",
1366 mdt_body_capa, mdt_body_only);
1367 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1369 struct req_format RQF_MDS_HSM_ACTION =
1370 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1371 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1373 struct req_format RQF_MDS_HSM_PROGRESS =
1374 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1375 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1377 struct req_format RQF_MDS_HSM_CT_REGISTER =
1378 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1379 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1381 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1382 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", empty, empty);
1383 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1385 struct req_format RQF_MDS_HSM_STATE_GET =
1386 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1387 mdt_body_capa, mdt_hsm_state_get_server);
1388 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1390 struct req_format RQF_MDS_HSM_STATE_SET =
1391 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1392 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1394 /* This is for split */
1395 struct req_format RQF_MDS_WRITEPAGE =
1396 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1397 mdt_body_capa, mdt_body_only);
1398 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1400 struct req_format RQF_MDS_IS_SUBDIR =
1401 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1402 mdt_body_only, mdt_body_only);
1403 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1405 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1406 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1407 llog_origin_handle_create_client, llogd_body_only);
1408 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1410 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1411 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1412 llogd_body_only, llogd_body_only);
1413 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1415 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1416 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1417 llogd_body_only, llog_origin_handle_next_block_server);
1418 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1420 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1421 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1422 llogd_body_only, llog_origin_handle_next_block_server);
1423 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1425 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1426 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1427 llogd_body_only, llog_log_hdr_only);
1428 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1430 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1431 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1432 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1434 struct req_format RQF_OST_CONNECT =
1435 DEFINE_REQ_FMT0("OST_CONNECT",
1436 obd_connect_client, obd_connect_server);
1437 EXPORT_SYMBOL(RQF_OST_CONNECT);
1439 struct req_format RQF_OST_DISCONNECT =
1440 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1441 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1443 struct req_format RQF_OST_GETATTR =
1444 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1445 EXPORT_SYMBOL(RQF_OST_GETATTR);
1447 struct req_format RQF_OST_SETATTR =
1448 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1449 EXPORT_SYMBOL(RQF_OST_SETATTR);
1451 struct req_format RQF_OST_CREATE =
1452 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1453 EXPORT_SYMBOL(RQF_OST_CREATE);
1455 struct req_format RQF_OST_PUNCH =
1456 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1457 EXPORT_SYMBOL(RQF_OST_PUNCH);
1459 struct req_format RQF_OST_SYNC =
1460 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1461 EXPORT_SYMBOL(RQF_OST_SYNC);
1463 struct req_format RQF_OST_DESTROY =
1464 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1465 EXPORT_SYMBOL(RQF_OST_DESTROY);
1467 struct req_format RQF_OST_BRW_READ =
1468 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1469 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1471 struct req_format RQF_OST_BRW_WRITE =
1472 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1473 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1475 struct req_format RQF_OST_STATFS =
1476 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1477 EXPORT_SYMBOL(RQF_OST_STATFS);
1479 struct req_format RQF_OST_SET_GRANT_INFO =
1480 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1482 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1484 struct req_format RQF_OST_GET_INFO_GENERIC =
1485 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1486 ost_get_info_generic_server);
1487 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1489 struct req_format RQF_OST_GET_INFO_LAST_ID =
1490 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1491 ost_get_last_id_server);
1492 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1494 struct req_format RQF_OST_GET_INFO_LAST_FID =
1495 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1496 ost_get_last_fid_server);
1497 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1499 struct req_format RQF_OST_SET_INFO_LAST_FID =
1500 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1502 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1504 struct req_format RQF_OST_GET_INFO_FIEMAP =
1505 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1506 ost_get_fiemap_server);
1507 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1509 #if !defined(__REQ_LAYOUT_USER__)
1511 /* Convenience macro */
1512 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1515 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1516 * field of RQFs and the \a rmf_offset field of RMFs.
1518 int req_layout_init(void)
1523 struct req_format *rf = NULL;
1525 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1526 rf = req_formats[i];
1528 for (j = 0; j < RCL_NR; ++j) {
1529 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1530 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1531 struct req_msg_field *field;
1533 field = (typeof(field))rf->rf_fields[j].d[k];
1534 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1535 || field->rmf_size > 0);
1536 LASSERT(field->rmf_offset[i][j] == 0);
1538 * k + 1 to detect unused format/field
1541 field->rmf_offset[i][j] = k + 1;
1547 EXPORT_SYMBOL(req_layout_init);
1549 void req_layout_fini(void)
1552 EXPORT_SYMBOL(req_layout_fini);
1555 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1557 * Actual/expected field sizes are set elsewhere in functions in this file:
1558 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1559 * req_capsule_msg_size(). The \a rc_area information is used by.
1560 * ptlrpc_request_set_replen().
1562 void req_capsule_init_area(struct req_capsule *pill)
1566 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1567 pill->rc_area[RCL_CLIENT][i] = -1;
1568 pill->rc_area[RCL_SERVER][i] = -1;
1571 EXPORT_SYMBOL(req_capsule_init_area);
1574 * Initialize a pill.
1576 * The \a location indicates whether the caller is executing on the client side
1577 * (RCL_CLIENT) or server side (RCL_SERVER)..
1579 void req_capsule_init(struct req_capsule *pill,
1580 struct ptlrpc_request *req,
1581 enum req_location location)
1583 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1586 * Today all capsules are embedded in ptlrpc_request structs,
1587 * but just in case that ever isn't the case, we don't reach
1588 * into req unless req != NULL and pill is the one embedded in
1591 * The req->rq_pill_init flag makes it safe to initialize a pill
1592 * twice, which might happen in the OST paths as a result of the
1593 * high-priority RPC queue getting peeked at before ost_handle()
1594 * handles an OST RPC.
1596 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1599 memset(pill, 0, sizeof *pill);
1601 pill->rc_loc = location;
1602 req_capsule_init_area(pill);
1604 if (req != NULL && pill == &req->rq_pill)
1605 req->rq_pill_init = 1;
1607 EXPORT_SYMBOL(req_capsule_init);
1609 void req_capsule_fini(struct req_capsule *pill)
1612 EXPORT_SYMBOL(req_capsule_fini);
1614 static int __req_format_is_sane(const struct req_format *fmt)
1617 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1618 req_formats[fmt->rf_idx] == fmt;
1621 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1622 enum req_location loc)
1624 struct ptlrpc_request *req;
1627 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1631 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1632 * (see req_capsule_extend()).
1634 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1636 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1637 LASSERT(__req_format_is_sane(fmt));
1641 EXPORT_SYMBOL(req_capsule_set);
1644 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1647 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1648 * variable-sized fields. The field sizes come from the declared \a rmf_size
1649 * field of a \a pill's \a rc_fmt's RMF's.
1651 int req_capsule_filled_sizes(struct req_capsule *pill,
1652 enum req_location loc)
1654 const struct req_format *fmt = pill->rc_fmt;
1657 LASSERT(fmt != NULL);
1659 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1660 if (pill->rc_area[loc][i] == -1) {
1661 pill->rc_area[loc][i] =
1662 fmt->rf_fields[loc].d[i]->rmf_size;
1663 if (pill->rc_area[loc][i] == -1) {
1665 * Skip the following fields.
1667 * If this LASSERT() trips then you're missing a
1668 * call to req_capsule_set_size().
1670 LASSERT(loc != RCL_SERVER);
1677 EXPORT_SYMBOL(req_capsule_filled_sizes);
1680 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1682 * This function uses the \a pill's \a rc_area as filled in by
1683 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1686 int req_capsule_server_pack(struct req_capsule *pill)
1688 const struct req_format *fmt;
1692 LASSERT(pill->rc_loc == RCL_SERVER);
1694 LASSERT(fmt != NULL);
1696 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1697 rc = lustre_pack_reply(pill->rc_req, count,
1698 pill->rc_area[RCL_SERVER], NULL);
1700 DEBUG_REQ(D_ERROR, pill->rc_req,
1701 "Cannot pack %d fields in format `%s': ",
1702 count, fmt->rf_name);
1706 EXPORT_SYMBOL(req_capsule_server_pack);
1709 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1710 * corresponding to the given RMF (\a field).
1712 static int __req_capsule_offset(const struct req_capsule *pill,
1713 const struct req_msg_field *field,
1714 enum req_location loc)
1718 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1719 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1720 pill->rc_fmt->rf_name,
1721 field->rmf_name, offset, loc);
1724 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1729 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1734 swabber_dumper_helper(struct req_capsule *pill,
1735 const struct req_msg_field *field,
1736 enum req_location loc,
1738 void *value, int len, int dump, void (*swabber)( void *))
1744 int inout = loc == RCL_CLIENT;
1746 swabber = swabber ?: field->rmf_swabber;
1748 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1749 swabber != NULL && value != NULL)
1754 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1755 if (dump && field->rmf_dumper) {
1756 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1757 do_swab ? "unswabbed " : "", field->rmf_name);
1758 field->rmf_dumper(value);
1763 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1765 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1766 "follows\n", field->rmf_name);
1767 field->rmf_dumper(value);
1774 * We're swabbing an array; swabber() swabs a single array element, so
1775 * swab every element.
1777 LASSERT((len % field->rmf_size) == 0);
1778 for (p = value, i = 0, n = len / field->rmf_size;
1780 i++, p += field->rmf_size) {
1781 if (dump && field->rmf_dumper) {
1782 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1783 "element %d follows\n",
1784 do_swab ? "unswabbed " : "", field->rmf_name, i);
1785 field->rmf_dumper(p);
1790 if (dump && field->rmf_dumper) {
1791 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1792 "element %d follows\n", field->rmf_name, i);
1793 field->rmf_dumper(value);
1797 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1801 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1802 * corresponding to the given RMF (\a field).
1804 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1805 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1806 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1807 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1808 * element of the array swabbed.
1810 static void *__req_capsule_get(struct req_capsule *pill,
1811 const struct req_msg_field *field,
1812 enum req_location loc,
1813 void (*swabber)( void *),
1816 const struct req_format *fmt;
1817 struct lustre_msg *msg;
1822 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1824 static const char *rcl_names[RCL_NR] = {
1825 [RCL_CLIENT] = "client",
1826 [RCL_SERVER] = "server"
1829 LASSERT(pill != NULL);
1830 LASSERT(pill != LP_POISON);
1832 LASSERT(fmt != NULL);
1833 LASSERT(fmt != LP_POISON);
1834 LASSERT(__req_format_is_sane(fmt));
1836 offset = __req_capsule_offset(pill, field, loc);
1838 msg = __req_msg(pill, loc);
1839 LASSERT(msg != NULL);
1841 getter = (field->rmf_flags & RMF_F_STRING) ?
1842 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1844 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1846 * We've already asserted that field->rmf_size > 0 in
1847 * req_layout_init().
1849 len = lustre_msg_buflen(msg, offset);
1850 if ((len % field->rmf_size) != 0) {
1851 CERROR("%s: array field size mismatch "
1852 "%d modulo %d != 0 (%d)\n",
1853 field->rmf_name, len, field->rmf_size, loc);
1856 } else if (pill->rc_area[loc][offset] != -1) {
1857 len = pill->rc_area[loc][offset];
1859 len = max(field->rmf_size, 0);
1861 value = getter(msg, offset, len);
1863 if (value == NULL) {
1864 DEBUG_REQ(D_ERROR, pill->rc_req,
1865 "Wrong buffer for field `%s' (%d of %d) "
1866 "in format `%s': %d vs. %d (%s)\n",
1867 field->rmf_name, offset, lustre_msg_bufcount(msg),
1868 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1871 swabber_dumper_helper(pill, field, loc, offset, value, len,
1879 * Dump a request and/or reply
1881 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
1883 const struct req_format *fmt;
1884 const struct req_msg_field *field;
1890 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
1891 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1892 field = FMT_FIELD(fmt, loc, i);
1893 if (field->rmf_dumper == NULL) {
1895 * FIXME Add a default hex dumper for fields that don't
1896 * have a specific dumper
1898 len = req_capsule_get_size(pill, field, loc);
1899 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
1900 "field size is %d\n", field->rmf_name, len);
1902 /* It's the dumping side-effect that we're interested in */
1903 (void) __req_capsule_get(pill, field, loc, NULL, 1);
1906 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
1912 void req_capsule_client_dump(struct req_capsule *pill)
1914 __req_capsule_dump(pill, RCL_CLIENT);
1916 EXPORT_SYMBOL(req_capsule_client_dump);
1921 void req_capsule_server_dump(struct req_capsule *pill)
1923 __req_capsule_dump(pill, RCL_SERVER);
1925 EXPORT_SYMBOL(req_capsule_server_dump);
1928 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1929 * buffer corresponding to the given RMF (\a field) of a \a pill.
1931 void *req_capsule_client_get(struct req_capsule *pill,
1932 const struct req_msg_field *field)
1934 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1936 EXPORT_SYMBOL(req_capsule_client_get);
1939 * Same as req_capsule_client_get(), but with a \a swabber argument.
1941 * Currently unused; will be removed when req_capsule_server_swab_get() is
1944 void *req_capsule_client_swab_get(struct req_capsule *pill,
1945 const struct req_msg_field *field,
1948 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1950 EXPORT_SYMBOL(req_capsule_client_swab_get);
1953 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
1955 * First the \a pill's request \a field's size is set (\a rc_area) using
1956 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1959 void *req_capsule_client_sized_get(struct req_capsule *pill,
1960 const struct req_msg_field *field,
1963 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1964 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1966 EXPORT_SYMBOL(req_capsule_client_sized_get);
1969 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
1970 * buffer corresponding to the given RMF (\a field) of a \a pill.
1972 void *req_capsule_server_get(struct req_capsule *pill,
1973 const struct req_msg_field *field)
1975 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1977 EXPORT_SYMBOL(req_capsule_server_get);
1980 * Same as req_capsule_server_get(), but with a \a swabber argument.
1982 * Ideally all swabbing should be done pursuant to RMF definitions, with no
1983 * swabbing done outside this capsule abstraction.
1985 void *req_capsule_server_swab_get(struct req_capsule *pill,
1986 const struct req_msg_field *field,
1989 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1991 EXPORT_SYMBOL(req_capsule_server_swab_get);
1994 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
1996 * First the \a pill's request \a field's size is set (\a rc_area) using
1997 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2000 void *req_capsule_server_sized_get(struct req_capsule *pill,
2001 const struct req_msg_field *field,
2004 req_capsule_set_size(pill, field, RCL_SERVER, len);
2005 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2007 EXPORT_SYMBOL(req_capsule_server_sized_get);
2009 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2010 const struct req_msg_field *field,
2011 int len, void *swabber)
2013 req_capsule_set_size(pill, field, RCL_SERVER, len);
2014 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2016 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2019 * Returns the buffer of a \a pill corresponding to the given \a field from the
2020 * request (if the caller is executing on the server-side) or reply (if the
2021 * caller is executing on the client-side).
2023 * This function convienient for use is code that could be executed on the
2024 * client and server alike.
2026 const void *req_capsule_other_get(struct req_capsule *pill,
2027 const struct req_msg_field *field)
2029 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
2031 EXPORT_SYMBOL(req_capsule_other_get);
2034 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2035 * field of the given \a pill.
2037 * This function must be used when constructing variable sized fields of a
2040 void req_capsule_set_size(struct req_capsule *pill,
2041 const struct req_msg_field *field,
2042 enum req_location loc, int size)
2044 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2046 if ((size != field->rmf_size) &&
2047 (field->rmf_size != -1) &&
2048 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2050 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2051 (size % field->rmf_size != 0)) {
2052 CERROR("%s: array field size mismatch "
2053 "%d %% %d != 0 (%d)\n",
2054 field->rmf_name, size, field->rmf_size, loc);
2056 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2057 size < field->rmf_size) {
2058 CERROR("%s: field size mismatch %d != %d (%d)\n",
2059 field->rmf_name, size, field->rmf_size, loc);
2064 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2066 EXPORT_SYMBOL(req_capsule_set_size);
2069 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2070 * for the given \a pill's given \a field.
2072 * NB: this function doesn't correspond with req_capsule_set_size(), which
2073 * actually sets the size in pill.rc_area[loc][offset], but this function
2074 * returns the message buflen[offset], maybe we should use another name.
2076 int req_capsule_get_size(const struct req_capsule *pill,
2077 const struct req_msg_field *field,
2078 enum req_location loc)
2080 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2082 return lustre_msg_buflen(__req_msg(pill, loc),
2083 __req_capsule_offset(pill, field, loc));
2085 EXPORT_SYMBOL(req_capsule_get_size);
2088 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2089 * given \a pill's request or reply (\a loc) given the field size recorded in
2090 * the \a pill's rc_area.
2092 * See also req_capsule_set_size().
2094 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2096 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2097 pill->rc_fmt->rf_fields[loc].nr,
2098 pill->rc_area[loc]);
2102 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2103 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2104 * PTLRPC request or reply given only an RQF (\a fmt).
2106 * This function should not be used for formats which contain variable size
2109 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2110 enum req_location loc)
2115 * This function should probably LASSERT() that fmt has no fields with
2116 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2117 * elements in the array there will ultimately be, but then, we could
2118 * assume that there will be at least one element, and that's just what
2121 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2125 for (; i < fmt->rf_fields[loc].nr; ++i)
2126 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2127 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2133 * Changes the format of an RPC.
2135 * The pill must already have been initialized, which means that it already has
2136 * a request format. The new format \a fmt must be an extension of the pill's
2137 * old format. Specifically: the new format must have as many request and reply
2138 * fields as the old one, and all fields shared by the old and new format must
2139 * be at least as large in the new format.
2141 * The new format's fields may be of different "type" than the old format, but
2142 * only for fields that are "opaque" blobs: fields which have a) have no
2143 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2144 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2145 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2146 * according to the key field. When the value, according to the key, contains a
2147 * structure (or array thereof) to be swabbed, the format should be changed to
2148 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2151 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2156 const struct req_format *old;
2158 LASSERT(pill->rc_fmt != NULL);
2159 LASSERT(__req_format_is_sane(fmt));
2163 * Sanity checking...
2165 for (i = 0; i < RCL_NR; ++i) {
2166 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2167 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2168 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2170 /* "opaque" fields can be transmogrified */
2171 if (ofield->rmf_swabber == NULL &&
2172 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2173 (ofield->rmf_size == -1 ||
2174 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2176 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2179 * Last field in old format can be shorter than in new.
2181 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2182 FMT_FIELD(old, i, j)->rmf_size);
2187 EXPORT_SYMBOL(req_capsule_extend);
2190 * This function returns a non-zero value if the given \a field is present in
2191 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2194 int req_capsule_has_field(const struct req_capsule *pill,
2195 const struct req_msg_field *field,
2196 enum req_location loc)
2198 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2200 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2202 EXPORT_SYMBOL(req_capsule_has_field);
2205 * Returns a non-zero value if the given \a field is present in the given \a
2206 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2208 int req_capsule_field_present(const struct req_capsule *pill,
2209 const struct req_msg_field *field,
2210 enum req_location loc)
2214 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2215 LASSERT(req_capsule_has_field(pill, field, loc));
2217 offset = __req_capsule_offset(pill, field, loc);
2218 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2220 EXPORT_SYMBOL(req_capsule_field_present);
2223 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2224 * request or reply (\a loc).
2226 * This is not the opposite of req_capsule_extend().
2228 void req_capsule_shrink(struct req_capsule *pill,
2229 const struct req_msg_field *field,
2230 unsigned int newlen,
2231 enum req_location loc)
2233 const struct req_format *fmt;
2234 struct lustre_msg *msg;
2239 LASSERT(fmt != NULL);
2240 LASSERT(__req_format_is_sane(fmt));
2241 LASSERT(req_capsule_has_field(pill, field, loc));
2242 LASSERT(req_capsule_field_present(pill, field, loc));
2244 offset = __req_capsule_offset(pill, field, loc);
2246 msg = __req_msg(pill, loc);
2247 len = lustre_msg_buflen(msg, offset);
2248 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2249 fmt->rf_name, field->rmf_name, len, newlen);
2251 if (loc == RCL_CLIENT)
2252 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2255 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2258 EXPORT_SYMBOL(req_capsule_shrink);
2260 int req_capsule_server_grow(struct req_capsule *pill,
2261 const struct req_msg_field *field,
2262 unsigned int newlen)
2264 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2266 int offset, len, rc;
2268 LASSERT(pill->rc_fmt != NULL);
2269 LASSERT(__req_format_is_sane(pill->rc_fmt));
2270 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2271 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2273 len = req_capsule_get_size(pill, field, RCL_SERVER);
2274 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2275 if (pill->rc_req->rq_repbuf_len >=
2276 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2277 CERROR("Inplace repack might be done\n");
2279 pill->rc_req->rq_reply_state = NULL;
2280 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2281 rc = req_capsule_server_pack(pill);
2283 /* put old rs back, the caller will decide what to do */
2284 pill->rc_req->rq_reply_state = rs;
2287 nrs = pill->rc_req->rq_reply_state;
2288 /* Now we need only buffers, copy first chunk */
2289 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2290 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2291 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2292 memcpy(to, from, len);
2293 /* check if we have tail and copy it too */
2294 if (rs->rs_msg->lm_bufcount > offset + 1) {
2295 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2296 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2297 offset = rs->rs_msg->lm_bufcount - 1;
2298 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2299 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2300 memcpy(to, from, len);
2302 /* drop old reply if everything is fine */
2303 if (rs->rs_difficult) {
2307 nrs->rs_difficult = 1;
2308 nrs->rs_no_ack = rs->rs_no_ack;
2309 for (i = 0; i < rs->rs_nlocks; i++) {
2310 nrs->rs_locks[i] = rs->rs_locks[i];
2311 nrs->rs_modes[i] = rs->rs_modes[i];
2315 rs->rs_difficult = 0;
2318 ptlrpc_rs_decref(rs);
2321 EXPORT_SYMBOL(req_capsule_server_grow);
2322 /* __REQ_LAYOUT_USER__ */