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 const struct req_msg_field *mdt_hsm_request[] = {
619 &RMF_MDS_HSM_REQUEST,
620 &RMF_MDS_HSM_USER_ITEM,
624 static struct req_format *req_formats[] = {
631 &RQF_MGS_CONFIG_READ,
640 &RQF_MDS_GETATTR_NAME,
649 &RQF_MDS_DONE_WRITING,
651 &RQF_MDS_REINT_CREATE,
652 &RQF_MDS_REINT_CREATE_RMT_ACL,
653 &RQF_MDS_REINT_CREATE_SLAVE,
654 &RQF_MDS_REINT_CREATE_SYM,
656 &RQF_MDS_REINT_UNLINK,
658 &RQF_MDS_REINT_RENAME,
659 &RQF_MDS_REINT_SETATTR,
660 &RQF_MDS_REINT_SETXATTR,
663 &RQF_MDS_HSM_PROGRESS,
664 &RQF_MDS_HSM_CT_REGISTER,
665 &RQF_MDS_HSM_CT_UNREGISTER,
666 &RQF_MDS_HSM_STATE_GET,
667 &RQF_MDS_HSM_STATE_SET,
669 &RQF_MDS_HSM_REQUEST,
684 &RQF_OST_SET_GRANT_INFO,
685 &RQF_OST_GET_INFO_GENERIC,
686 &RQF_OST_GET_INFO_LAST_ID,
687 &RQF_OST_GET_INFO_LAST_FID,
688 &RQF_OST_SET_INFO_LAST_FID,
689 &RQF_OST_GET_INFO_FIEMAP,
691 &RQF_LDLM_ENQUEUE_LVB,
695 &RQF_LDLM_CP_CALLBACK,
696 &RQF_LDLM_BL_CALLBACK,
697 &RQF_LDLM_GL_CALLBACK,
698 &RQF_LDLM_GL_DESC_CALLBACK,
700 &RQF_LDLM_INTENT_BASIC,
701 &RQF_LDLM_INTENT_LAYOUT,
702 &RQF_LDLM_INTENT_GETATTR,
703 &RQF_LDLM_INTENT_OPEN,
704 &RQF_LDLM_INTENT_CREATE,
705 &RQF_LDLM_INTENT_UNLINK,
706 &RQF_LDLM_INTENT_QUOTA,
709 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
710 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
711 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
712 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
713 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
714 &RQF_LLOG_ORIGIN_CONNECT
717 struct req_msg_field {
718 const __u32 rmf_flags;
719 const char *rmf_name;
721 * Field length. (-1) means "variable length". If the
722 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
723 * but the actual size must be a whole multiple of \a rmf_size.
726 void (*rmf_swabber)(void *);
727 void (*rmf_dumper)(void *);
728 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
733 * The field is a string, must be NUL-terminated.
735 RMF_F_STRING = 1 << 0,
737 * The field's buffer size need not match the declared \a rmf_size.
739 RMF_F_NO_SIZE_CHECK = 1 << 1,
741 * The field's buffer size must be a whole multiple of the declared \a
742 * rmf_size and the \a rmf_swabber function must work on the declared \a
743 * rmf_size worth of bytes.
745 RMF_F_STRUCT_ARRAY = 1 << 2
753 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
754 .rmf_name = (name), \
755 .rmf_flags = (flags), \
756 .rmf_size = (size), \
757 .rmf_swabber = (void (*)(void*))(swabber), \
758 .rmf_dumper = (void (*)(void*))(dumper) \
761 struct req_msg_field RMF_GENERIC_DATA =
762 DEFINE_MSGF("generic_data", 0,
764 EXPORT_SYMBOL(RMF_GENERIC_DATA);
766 struct req_msg_field RMF_MGS_TARGET_INFO =
767 DEFINE_MSGF("mgs_target_info", 0,
768 sizeof(struct mgs_target_info),
769 lustre_swab_mgs_target_info, NULL);
770 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
772 struct req_msg_field RMF_MGS_SEND_PARAM =
773 DEFINE_MSGF("mgs_send_param", 0,
774 sizeof(struct mgs_send_param),
776 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
778 struct req_msg_field RMF_MGS_CONFIG_BODY =
779 DEFINE_MSGF("mgs_config_read request", 0,
780 sizeof(struct mgs_config_body),
781 lustre_swab_mgs_config_body, NULL);
782 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
784 struct req_msg_field RMF_MGS_CONFIG_RES =
785 DEFINE_MSGF("mgs_config_read reply ", 0,
786 sizeof(struct mgs_config_res),
787 lustre_swab_mgs_config_res, NULL);
788 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
790 struct req_msg_field RMF_U32 =
791 DEFINE_MSGF("generic u32", 0,
792 sizeof(__u32), lustre_swab_generic_32s, NULL);
793 EXPORT_SYMBOL(RMF_U32);
795 struct req_msg_field RMF_SETINFO_VAL =
796 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
797 EXPORT_SYMBOL(RMF_SETINFO_VAL);
799 struct req_msg_field RMF_GETINFO_KEY =
800 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
801 EXPORT_SYMBOL(RMF_GETINFO_KEY);
803 struct req_msg_field RMF_GETINFO_VALLEN =
804 DEFINE_MSGF("getinfo_vallen", 0,
805 sizeof(__u32), lustre_swab_generic_32s, NULL);
806 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
808 struct req_msg_field RMF_GETINFO_VAL =
809 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
810 EXPORT_SYMBOL(RMF_GETINFO_VAL);
812 struct req_msg_field RMF_SEQ_OPC =
813 DEFINE_MSGF("seq_query_opc", 0,
814 sizeof(__u32), lustre_swab_generic_32s, NULL);
815 EXPORT_SYMBOL(RMF_SEQ_OPC);
817 struct req_msg_field RMF_SEQ_RANGE =
818 DEFINE_MSGF("seq_query_range", 0,
819 sizeof(struct lu_seq_range),
820 lustre_swab_lu_seq_range, NULL);
821 EXPORT_SYMBOL(RMF_SEQ_RANGE);
823 struct req_msg_field RMF_FLD_OPC =
824 DEFINE_MSGF("fld_query_opc", 0,
825 sizeof(__u32), lustre_swab_generic_32s, NULL);
826 EXPORT_SYMBOL(RMF_FLD_OPC);
828 struct req_msg_field RMF_FLD_MDFLD =
829 DEFINE_MSGF("fld_query_mdfld", 0,
830 sizeof(struct lu_seq_range),
831 lustre_swab_lu_seq_range, NULL);
832 EXPORT_SYMBOL(RMF_FLD_MDFLD);
834 struct req_msg_field RMF_MDT_BODY =
835 DEFINE_MSGF("mdt_body", 0,
836 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
837 EXPORT_SYMBOL(RMF_MDT_BODY);
839 struct req_msg_field RMF_OBD_QUOTACTL =
840 DEFINE_MSGF("obd_quotactl", 0,
841 sizeof(struct obd_quotactl),
842 lustre_swab_obd_quotactl, NULL);
843 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
845 struct req_msg_field RMF_QUOTA_BODY =
846 DEFINE_MSGF("quota_body", 0,
847 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
848 EXPORT_SYMBOL(RMF_QUOTA_BODY);
850 struct req_msg_field RMF_MDT_EPOCH =
851 DEFINE_MSGF("mdt_ioepoch", 0,
852 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
853 EXPORT_SYMBOL(RMF_MDT_EPOCH);
855 struct req_msg_field RMF_PTLRPC_BODY =
856 DEFINE_MSGF("ptlrpc_body", 0,
857 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
858 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
860 struct req_msg_field RMF_OBD_STATFS =
861 DEFINE_MSGF("obd_statfs", 0,
862 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
863 EXPORT_SYMBOL(RMF_OBD_STATFS);
865 struct req_msg_field RMF_SETINFO_KEY =
866 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
867 EXPORT_SYMBOL(RMF_SETINFO_KEY);
869 struct req_msg_field RMF_NAME =
870 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
871 EXPORT_SYMBOL(RMF_NAME);
873 struct req_msg_field RMF_SYMTGT =
874 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
875 EXPORT_SYMBOL(RMF_SYMTGT);
877 struct req_msg_field RMF_TGTUUID =
878 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
880 EXPORT_SYMBOL(RMF_TGTUUID);
882 struct req_msg_field RMF_CLUUID =
883 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
885 EXPORT_SYMBOL(RMF_CLUUID);
887 struct req_msg_field RMF_STRING =
888 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
889 EXPORT_SYMBOL(RMF_STRING);
891 struct req_msg_field RMF_LLOGD_BODY =
892 DEFINE_MSGF("llogd_body", 0,
893 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
894 EXPORT_SYMBOL(RMF_LLOGD_BODY);
896 struct req_msg_field RMF_LLOG_LOG_HDR =
897 DEFINE_MSGF("llog_log_hdr", 0,
898 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
899 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
901 struct req_msg_field RMF_LLOGD_CONN_BODY =
902 DEFINE_MSGF("llogd_conn_body", 0,
903 sizeof(struct llogd_conn_body),
904 lustre_swab_llogd_conn_body, NULL);
905 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
908 * connection handle received in MDS_CONNECT request.
910 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
911 * that the client does not interpret at all.
913 struct req_msg_field RMF_CONN =
914 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
915 EXPORT_SYMBOL(RMF_CONN);
917 struct req_msg_field RMF_CONNECT_DATA =
919 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
920 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
921 sizeof(struct obd_connect_data),
923 /* For interoperability with 1.8 and 2.0 clients/servers.
924 * The RPC verification code allows larger RPC buffers, but not
925 * smaller buffers. Until we no longer need to keep compatibility
926 * with older servers/clients we can only check that the buffer
927 * size is at least as large as obd_connect_data_v1. That is not
928 * not in itself harmful, since the chance of just corrupting this
929 * field is low. See JIRA LU-16 for details. */
930 sizeof(struct obd_connect_data_v1),
932 lustre_swab_connect, NULL);
933 EXPORT_SYMBOL(RMF_CONNECT_DATA);
935 struct req_msg_field RMF_DLM_REQ =
936 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
937 sizeof(struct ldlm_request),
938 lustre_swab_ldlm_request, NULL);
939 EXPORT_SYMBOL(RMF_DLM_REQ);
941 struct req_msg_field RMF_DLM_REP =
942 DEFINE_MSGF("dlm_rep", 0,
943 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
944 EXPORT_SYMBOL(RMF_DLM_REP);
946 struct req_msg_field RMF_LDLM_INTENT =
947 DEFINE_MSGF("ldlm_intent", 0,
948 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
949 EXPORT_SYMBOL(RMF_LDLM_INTENT);
951 struct req_msg_field RMF_DLM_LVB =
952 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
953 EXPORT_SYMBOL(RMF_DLM_LVB);
955 struct req_msg_field RMF_DLM_GL_DESC =
956 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
957 lustre_swab_gl_desc, NULL);
958 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
960 struct req_msg_field RMF_MDT_MD =
961 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
962 EXPORT_SYMBOL(RMF_MDT_MD);
964 struct req_msg_field RMF_REC_REINT =
965 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
966 lustre_swab_mdt_rec_reint, NULL);
967 EXPORT_SYMBOL(RMF_REC_REINT);
969 /* FIXME: this length should be defined as a macro */
970 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
972 EXPORT_SYMBOL(RMF_EADATA);
974 struct req_msg_field RMF_ACL =
975 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
976 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
977 EXPORT_SYMBOL(RMF_ACL);
979 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
980 struct req_msg_field RMF_LOGCOOKIES =
981 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
982 sizeof(struct llog_cookie), NULL, NULL);
983 EXPORT_SYMBOL(RMF_LOGCOOKIES);
985 struct req_msg_field RMF_CAPA1 =
986 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
987 lustre_swab_lustre_capa, NULL);
988 EXPORT_SYMBOL(RMF_CAPA1);
990 struct req_msg_field RMF_CAPA2 =
991 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
992 lustre_swab_lustre_capa, NULL);
993 EXPORT_SYMBOL(RMF_CAPA2);
995 struct req_msg_field RMF_LAYOUT_INTENT =
996 DEFINE_MSGF("layout_intent", 0,
997 sizeof(struct layout_intent), lustre_swab_layout_intent,
999 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1002 * OST request field.
1004 struct req_msg_field RMF_OST_BODY =
1005 DEFINE_MSGF("ost_body", 0,
1006 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1007 EXPORT_SYMBOL(RMF_OST_BODY);
1009 struct req_msg_field RMF_OBD_IOOBJ =
1010 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1011 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1012 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1014 struct req_msg_field RMF_NIOBUF_REMOTE =
1015 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1016 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1018 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1020 struct req_msg_field RMF_RCS =
1021 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1022 lustre_swab_generic_32s, dump_rcs);
1023 EXPORT_SYMBOL(RMF_RCS);
1025 struct req_msg_field RMF_OBD_ID =
1026 DEFINE_MSGF("obd_id", 0,
1027 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
1028 EXPORT_SYMBOL(RMF_OBD_ID);
1030 struct req_msg_field RMF_FID =
1031 DEFINE_MSGF("fid", 0,
1032 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1033 EXPORT_SYMBOL(RMF_FID);
1035 struct req_msg_field RMF_FIEMAP_KEY =
1036 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1037 lustre_swab_fiemap, NULL);
1038 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1040 struct req_msg_field RMF_FIEMAP_VAL =
1041 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1042 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1044 struct req_msg_field RMF_IDX_INFO =
1045 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1046 lustre_swab_idx_info, NULL);
1047 EXPORT_SYMBOL(RMF_IDX_INFO);
1048 struct req_msg_field RMF_HSM_USER_STATE =
1049 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1050 lustre_swab_hsm_user_state, NULL);
1051 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1053 struct req_msg_field RMF_HSM_STATE_SET =
1054 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1055 lustre_swab_hsm_state_set, NULL);
1056 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1058 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1059 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1060 lustre_swab_hsm_progress_kernel, NULL);
1061 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1063 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1064 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1065 lustre_swab_hsm_current_action, NULL);
1066 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1068 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1069 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1070 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1072 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1074 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1075 DEFINE_MSGF("hsm_archive", 0,
1076 sizeof(__u32), lustre_swab_generic_32s, NULL);
1077 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1079 struct req_msg_field RMF_MDS_HSM_REQUEST =
1080 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1081 lustre_swab_hsm_request, NULL);
1082 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1089 const char *rf_name;
1093 const struct req_msg_field **d;
1094 } rf_fields[RCL_NR];
1097 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1111 #define DEFINE_REQ_FMT0(name, client, server) \
1112 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1114 struct req_format RQF_OBD_PING =
1115 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1116 EXPORT_SYMBOL(RQF_OBD_PING);
1118 struct req_format RQF_OBD_SET_INFO =
1119 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1120 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1122 /* Read index file through the network */
1123 struct req_format RQF_OBD_IDX_READ =
1124 DEFINE_REQ_FMT0("OBD_IDX_READ",
1125 obd_idx_read_client, obd_idx_read_server);
1126 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1128 struct req_format RQF_SEC_CTX =
1129 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1130 EXPORT_SYMBOL(RQF_SEC_CTX);
1132 struct req_format RQF_MGS_TARGET_REG =
1133 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1134 mgs_target_info_only);
1135 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1137 struct req_format RQF_MGS_SET_INFO =
1138 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1140 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1142 struct req_format RQF_MGS_CONFIG_READ =
1143 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1144 mgs_config_read_server);
1145 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1147 struct req_format RQF_SEQ_QUERY =
1148 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1149 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1151 struct req_format RQF_FLD_QUERY =
1152 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1153 EXPORT_SYMBOL(RQF_FLD_QUERY);
1155 struct req_format RQF_LOG_CANCEL =
1156 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1157 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1159 struct req_format RQF_MDS_QUOTACHECK =
1160 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1161 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1163 struct req_format RQF_OST_QUOTACHECK =
1164 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1165 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1167 struct req_format RQF_MDS_QUOTACTL =
1168 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1169 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1171 struct req_format RQF_OST_QUOTACTL =
1172 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1173 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1175 struct req_format RQF_QC_CALLBACK =
1176 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1177 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1179 struct req_format RQF_QUOTA_DQACQ =
1180 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1181 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1183 struct req_format RQF_LDLM_INTENT_QUOTA =
1184 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1185 ldlm_intent_quota_client,
1186 ldlm_intent_quota_server);
1187 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1189 struct req_format RQF_MDS_GETSTATUS =
1190 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1191 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1193 struct req_format RQF_MDS_STATFS =
1194 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1195 EXPORT_SYMBOL(RQF_MDS_STATFS);
1197 struct req_format RQF_MDS_SYNC =
1198 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1199 EXPORT_SYMBOL(RQF_MDS_SYNC);
1201 struct req_format RQF_MDS_GETATTR =
1202 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1203 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1205 struct req_format RQF_MDS_GETXATTR =
1206 DEFINE_REQ_FMT0("MDS_GETXATTR",
1207 mds_getxattr_client, mds_getxattr_server);
1208 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1210 struct req_format RQF_MDS_GETATTR_NAME =
1211 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1212 mds_getattr_name_client, mds_getattr_server);
1213 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1215 struct req_format RQF_MDS_REINT =
1216 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1217 EXPORT_SYMBOL(RQF_MDS_REINT);
1219 struct req_format RQF_MDS_REINT_CREATE =
1220 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1221 mds_reint_create_client, mdt_body_capa);
1222 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1224 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1225 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1226 mds_reint_create_rmt_acl_client, mdt_body_capa);
1227 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1229 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1230 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1231 mds_reint_create_slave_client, mdt_body_capa);
1232 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1234 struct req_format RQF_MDS_REINT_CREATE_SYM =
1235 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1236 mds_reint_create_sym_client, mdt_body_capa);
1237 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1239 struct req_format RQF_MDS_REINT_OPEN =
1240 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1241 mds_reint_open_client, mds_reint_open_server);
1242 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1244 struct req_format RQF_MDS_REINT_UNLINK =
1245 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1246 mds_last_unlink_server);
1247 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1249 struct req_format RQF_MDS_REINT_LINK =
1250 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1251 mds_reint_link_client, mdt_body_only);
1252 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1254 struct req_format RQF_MDS_REINT_RENAME =
1255 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1256 mds_last_unlink_server);
1257 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1259 struct req_format RQF_MDS_REINT_SETATTR =
1260 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1261 mds_reint_setattr_client, mds_setattr_server);
1262 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1264 struct req_format RQF_MDS_REINT_SETXATTR =
1265 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1266 mds_reint_setxattr_client, mdt_body_only);
1267 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1269 struct req_format RQF_MDS_CONNECT =
1270 DEFINE_REQ_FMT0("MDS_CONNECT",
1271 obd_connect_client, obd_connect_server);
1272 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1274 struct req_format RQF_MDS_DISCONNECT =
1275 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1276 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1278 struct req_format RQF_MDS_GET_INFO =
1279 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1280 mds_getinfo_server);
1281 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1283 struct req_format RQF_LDLM_ENQUEUE =
1284 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1285 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1286 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1288 struct req_format RQF_LDLM_ENQUEUE_LVB =
1289 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1290 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1291 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1293 struct req_format RQF_LDLM_CONVERT =
1294 DEFINE_REQ_FMT0("LDLM_CONVERT",
1295 ldlm_enqueue_client, ldlm_enqueue_server);
1296 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1298 struct req_format RQF_LDLM_CANCEL =
1299 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1300 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1302 struct req_format RQF_LDLM_CALLBACK =
1303 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1304 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1306 struct req_format RQF_LDLM_CP_CALLBACK =
1307 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1308 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1310 struct req_format RQF_LDLM_BL_CALLBACK =
1311 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1312 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1314 struct req_format RQF_LDLM_GL_CALLBACK =
1315 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1316 ldlm_gl_callback_server);
1317 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1319 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1320 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1321 ldlm_gl_callback_server);
1322 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1324 struct req_format RQF_LDLM_INTENT_BASIC =
1325 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1326 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1327 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1329 struct req_format RQF_LDLM_INTENT =
1330 DEFINE_REQ_FMT0("LDLM_INTENT",
1331 ldlm_intent_client, ldlm_intent_server);
1332 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1334 struct req_format RQF_LDLM_INTENT_LAYOUT =
1335 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1336 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1337 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1339 struct req_format RQF_LDLM_INTENT_GETATTR =
1340 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1341 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1342 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1344 struct req_format RQF_LDLM_INTENT_OPEN =
1345 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1346 ldlm_intent_open_client, ldlm_intent_open_server);
1347 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1349 struct req_format RQF_LDLM_INTENT_CREATE =
1350 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1351 ldlm_intent_create_client, ldlm_intent_getattr_server);
1352 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1354 struct req_format RQF_LDLM_INTENT_UNLINK =
1355 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1356 ldlm_intent_unlink_client, ldlm_intent_server);
1357 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1359 struct req_format RQF_MDS_CLOSE =
1360 DEFINE_REQ_FMT0("MDS_CLOSE",
1361 mdt_close_client, mds_last_unlink_server);
1362 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1364 struct req_format RQF_MDS_PIN =
1365 DEFINE_REQ_FMT0("MDS_PIN",
1366 mdt_body_capa, mdt_body_only);
1367 EXPORT_SYMBOL(RQF_MDS_PIN);
1369 struct req_format RQF_MDS_UNPIN =
1370 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1371 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1373 struct req_format RQF_MDS_DONE_WRITING =
1374 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1375 mdt_close_client, mdt_body_only);
1376 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1378 struct req_format RQF_MDS_READPAGE =
1379 DEFINE_REQ_FMT0("MDS_READPAGE",
1380 mdt_body_capa, mdt_body_only);
1381 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1383 struct req_format RQF_MDS_HSM_ACTION =
1384 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1385 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1387 struct req_format RQF_MDS_HSM_PROGRESS =
1388 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1389 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1391 struct req_format RQF_MDS_HSM_CT_REGISTER =
1392 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1393 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1395 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1396 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", empty, empty);
1397 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1399 struct req_format RQF_MDS_HSM_STATE_GET =
1400 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1401 mdt_body_capa, mdt_hsm_state_get_server);
1402 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1404 struct req_format RQF_MDS_HSM_STATE_SET =
1405 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1406 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1408 struct req_format RQF_MDS_HSM_REQUEST =
1409 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1410 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1412 /* This is for split */
1413 struct req_format RQF_MDS_WRITEPAGE =
1414 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1415 mdt_body_capa, mdt_body_only);
1416 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1418 struct req_format RQF_MDS_IS_SUBDIR =
1419 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1420 mdt_body_only, mdt_body_only);
1421 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1423 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1424 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1425 llog_origin_handle_create_client, llogd_body_only);
1426 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1428 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1429 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1430 llogd_body_only, llogd_body_only);
1431 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1433 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1434 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1435 llogd_body_only, llog_origin_handle_next_block_server);
1436 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1438 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1439 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1440 llogd_body_only, llog_origin_handle_next_block_server);
1441 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1443 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1444 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1445 llogd_body_only, llog_log_hdr_only);
1446 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1448 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1449 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1450 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1452 struct req_format RQF_OST_CONNECT =
1453 DEFINE_REQ_FMT0("OST_CONNECT",
1454 obd_connect_client, obd_connect_server);
1455 EXPORT_SYMBOL(RQF_OST_CONNECT);
1457 struct req_format RQF_OST_DISCONNECT =
1458 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1459 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1461 struct req_format RQF_OST_GETATTR =
1462 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1463 EXPORT_SYMBOL(RQF_OST_GETATTR);
1465 struct req_format RQF_OST_SETATTR =
1466 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1467 EXPORT_SYMBOL(RQF_OST_SETATTR);
1469 struct req_format RQF_OST_CREATE =
1470 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1471 EXPORT_SYMBOL(RQF_OST_CREATE);
1473 struct req_format RQF_OST_PUNCH =
1474 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1475 EXPORT_SYMBOL(RQF_OST_PUNCH);
1477 struct req_format RQF_OST_SYNC =
1478 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1479 EXPORT_SYMBOL(RQF_OST_SYNC);
1481 struct req_format RQF_OST_DESTROY =
1482 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1483 EXPORT_SYMBOL(RQF_OST_DESTROY);
1485 struct req_format RQF_OST_BRW_READ =
1486 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1487 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1489 struct req_format RQF_OST_BRW_WRITE =
1490 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1491 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1493 struct req_format RQF_OST_STATFS =
1494 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1495 EXPORT_SYMBOL(RQF_OST_STATFS);
1497 struct req_format RQF_OST_SET_GRANT_INFO =
1498 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1500 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1502 struct req_format RQF_OST_GET_INFO_GENERIC =
1503 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1504 ost_get_info_generic_server);
1505 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1507 struct req_format RQF_OST_GET_INFO_LAST_ID =
1508 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1509 ost_get_last_id_server);
1510 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1512 struct req_format RQF_OST_GET_INFO_LAST_FID =
1513 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1514 ost_get_last_fid_server);
1515 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1517 struct req_format RQF_OST_SET_INFO_LAST_FID =
1518 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1520 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1522 struct req_format RQF_OST_GET_INFO_FIEMAP =
1523 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1524 ost_get_fiemap_server);
1525 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1527 #if !defined(__REQ_LAYOUT_USER__)
1529 /* Convenience macro */
1530 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1533 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1534 * field of RQFs and the \a rmf_offset field of RMFs.
1536 int req_layout_init(void)
1541 struct req_format *rf = NULL;
1543 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1544 rf = req_formats[i];
1546 for (j = 0; j < RCL_NR; ++j) {
1547 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1548 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1549 struct req_msg_field *field;
1551 field = (typeof(field))rf->rf_fields[j].d[k];
1552 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1553 || field->rmf_size > 0);
1554 LASSERT(field->rmf_offset[i][j] == 0);
1556 * k + 1 to detect unused format/field
1559 field->rmf_offset[i][j] = k + 1;
1565 EXPORT_SYMBOL(req_layout_init);
1567 void req_layout_fini(void)
1570 EXPORT_SYMBOL(req_layout_fini);
1573 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1575 * Actual/expected field sizes are set elsewhere in functions in this file:
1576 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1577 * req_capsule_msg_size(). The \a rc_area information is used by.
1578 * ptlrpc_request_set_replen().
1580 void req_capsule_init_area(struct req_capsule *pill)
1584 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1585 pill->rc_area[RCL_CLIENT][i] = -1;
1586 pill->rc_area[RCL_SERVER][i] = -1;
1589 EXPORT_SYMBOL(req_capsule_init_area);
1592 * Initialize a pill.
1594 * The \a location indicates whether the caller is executing on the client side
1595 * (RCL_CLIENT) or server side (RCL_SERVER)..
1597 void req_capsule_init(struct req_capsule *pill,
1598 struct ptlrpc_request *req,
1599 enum req_location location)
1601 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1604 * Today all capsules are embedded in ptlrpc_request structs,
1605 * but just in case that ever isn't the case, we don't reach
1606 * into req unless req != NULL and pill is the one embedded in
1609 * The req->rq_pill_init flag makes it safe to initialize a pill
1610 * twice, which might happen in the OST paths as a result of the
1611 * high-priority RPC queue getting peeked at before ost_handle()
1612 * handles an OST RPC.
1614 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1617 memset(pill, 0, sizeof *pill);
1619 pill->rc_loc = location;
1620 req_capsule_init_area(pill);
1622 if (req != NULL && pill == &req->rq_pill)
1623 req->rq_pill_init = 1;
1625 EXPORT_SYMBOL(req_capsule_init);
1627 void req_capsule_fini(struct req_capsule *pill)
1630 EXPORT_SYMBOL(req_capsule_fini);
1632 static int __req_format_is_sane(const struct req_format *fmt)
1635 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1636 req_formats[fmt->rf_idx] == fmt;
1639 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1640 enum req_location loc)
1642 struct ptlrpc_request *req;
1645 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1649 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1650 * (see req_capsule_extend()).
1652 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1654 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1655 LASSERT(__req_format_is_sane(fmt));
1659 EXPORT_SYMBOL(req_capsule_set);
1662 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1665 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1666 * variable-sized fields. The field sizes come from the declared \a rmf_size
1667 * field of a \a pill's \a rc_fmt's RMF's.
1669 int req_capsule_filled_sizes(struct req_capsule *pill,
1670 enum req_location loc)
1672 const struct req_format *fmt = pill->rc_fmt;
1675 LASSERT(fmt != NULL);
1677 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1678 if (pill->rc_area[loc][i] == -1) {
1679 pill->rc_area[loc][i] =
1680 fmt->rf_fields[loc].d[i]->rmf_size;
1681 if (pill->rc_area[loc][i] == -1) {
1683 * Skip the following fields.
1685 * If this LASSERT() trips then you're missing a
1686 * call to req_capsule_set_size().
1688 LASSERT(loc != RCL_SERVER);
1695 EXPORT_SYMBOL(req_capsule_filled_sizes);
1698 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1700 * This function uses the \a pill's \a rc_area as filled in by
1701 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1704 int req_capsule_server_pack(struct req_capsule *pill)
1706 const struct req_format *fmt;
1710 LASSERT(pill->rc_loc == RCL_SERVER);
1712 LASSERT(fmt != NULL);
1714 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1715 rc = lustre_pack_reply(pill->rc_req, count,
1716 pill->rc_area[RCL_SERVER], NULL);
1718 DEBUG_REQ(D_ERROR, pill->rc_req,
1719 "Cannot pack %d fields in format `%s': ",
1720 count, fmt->rf_name);
1724 EXPORT_SYMBOL(req_capsule_server_pack);
1727 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1728 * corresponding to the given RMF (\a field).
1730 static int __req_capsule_offset(const struct req_capsule *pill,
1731 const struct req_msg_field *field,
1732 enum req_location loc)
1736 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1737 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1738 pill->rc_fmt->rf_name,
1739 field->rmf_name, offset, loc);
1742 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1747 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1752 swabber_dumper_helper(struct req_capsule *pill,
1753 const struct req_msg_field *field,
1754 enum req_location loc,
1756 void *value, int len, int dump, void (*swabber)( void *))
1762 int inout = loc == RCL_CLIENT;
1764 swabber = swabber ?: field->rmf_swabber;
1766 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1767 swabber != NULL && value != NULL)
1772 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1773 if (dump && field->rmf_dumper) {
1774 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1775 do_swab ? "unswabbed " : "", field->rmf_name);
1776 field->rmf_dumper(value);
1781 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1783 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1784 "follows\n", field->rmf_name);
1785 field->rmf_dumper(value);
1792 * We're swabbing an array; swabber() swabs a single array element, so
1793 * swab every element.
1795 LASSERT((len % field->rmf_size) == 0);
1796 for (p = value, i = 0, n = len / field->rmf_size;
1798 i++, p += field->rmf_size) {
1799 if (dump && field->rmf_dumper) {
1800 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1801 "element %d follows\n",
1802 do_swab ? "unswabbed " : "", field->rmf_name, i);
1803 field->rmf_dumper(p);
1808 if (dump && field->rmf_dumper) {
1809 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1810 "element %d follows\n", field->rmf_name, i);
1811 field->rmf_dumper(value);
1815 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1819 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1820 * corresponding to the given RMF (\a field).
1822 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1823 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1824 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1825 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1826 * element of the array swabbed.
1828 static void *__req_capsule_get(struct req_capsule *pill,
1829 const struct req_msg_field *field,
1830 enum req_location loc,
1831 void (*swabber)( void *),
1834 const struct req_format *fmt;
1835 struct lustre_msg *msg;
1840 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1842 static const char *rcl_names[RCL_NR] = {
1843 [RCL_CLIENT] = "client",
1844 [RCL_SERVER] = "server"
1847 LASSERT(pill != NULL);
1848 LASSERT(pill != LP_POISON);
1850 LASSERT(fmt != NULL);
1851 LASSERT(fmt != LP_POISON);
1852 LASSERT(__req_format_is_sane(fmt));
1854 offset = __req_capsule_offset(pill, field, loc);
1856 msg = __req_msg(pill, loc);
1857 LASSERT(msg != NULL);
1859 getter = (field->rmf_flags & RMF_F_STRING) ?
1860 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1862 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1864 * We've already asserted that field->rmf_size > 0 in
1865 * req_layout_init().
1867 len = lustre_msg_buflen(msg, offset);
1868 if ((len % field->rmf_size) != 0) {
1869 CERROR("%s: array field size mismatch "
1870 "%d modulo %d != 0 (%d)\n",
1871 field->rmf_name, len, field->rmf_size, loc);
1874 } else if (pill->rc_area[loc][offset] != -1) {
1875 len = pill->rc_area[loc][offset];
1877 len = max(field->rmf_size, 0);
1879 value = getter(msg, offset, len);
1881 if (value == NULL) {
1882 DEBUG_REQ(D_ERROR, pill->rc_req,
1883 "Wrong buffer for field `%s' (%d of %d) "
1884 "in format `%s': %d vs. %d (%s)\n",
1885 field->rmf_name, offset, lustre_msg_bufcount(msg),
1886 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1889 swabber_dumper_helper(pill, field, loc, offset, value, len,
1897 * Dump a request and/or reply
1899 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
1901 const struct req_format *fmt;
1902 const struct req_msg_field *field;
1908 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
1909 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1910 field = FMT_FIELD(fmt, loc, i);
1911 if (field->rmf_dumper == NULL) {
1913 * FIXME Add a default hex dumper for fields that don't
1914 * have a specific dumper
1916 len = req_capsule_get_size(pill, field, loc);
1917 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
1918 "field size is %d\n", field->rmf_name, len);
1920 /* It's the dumping side-effect that we're interested in */
1921 (void) __req_capsule_get(pill, field, loc, NULL, 1);
1924 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
1930 void req_capsule_client_dump(struct req_capsule *pill)
1932 __req_capsule_dump(pill, RCL_CLIENT);
1934 EXPORT_SYMBOL(req_capsule_client_dump);
1939 void req_capsule_server_dump(struct req_capsule *pill)
1941 __req_capsule_dump(pill, RCL_SERVER);
1943 EXPORT_SYMBOL(req_capsule_server_dump);
1946 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1947 * buffer corresponding to the given RMF (\a field) of a \a pill.
1949 void *req_capsule_client_get(struct req_capsule *pill,
1950 const struct req_msg_field *field)
1952 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1954 EXPORT_SYMBOL(req_capsule_client_get);
1957 * Same as req_capsule_client_get(), but with a \a swabber argument.
1959 * Currently unused; will be removed when req_capsule_server_swab_get() is
1962 void *req_capsule_client_swab_get(struct req_capsule *pill,
1963 const struct req_msg_field *field,
1966 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1968 EXPORT_SYMBOL(req_capsule_client_swab_get);
1971 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
1973 * First the \a pill's request \a field's size is set (\a rc_area) using
1974 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1977 void *req_capsule_client_sized_get(struct req_capsule *pill,
1978 const struct req_msg_field *field,
1981 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1982 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1984 EXPORT_SYMBOL(req_capsule_client_sized_get);
1987 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
1988 * buffer corresponding to the given RMF (\a field) of a \a pill.
1990 void *req_capsule_server_get(struct req_capsule *pill,
1991 const struct req_msg_field *field)
1993 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1995 EXPORT_SYMBOL(req_capsule_server_get);
1998 * Same as req_capsule_server_get(), but with a \a swabber argument.
2000 * Ideally all swabbing should be done pursuant to RMF definitions, with no
2001 * swabbing done outside this capsule abstraction.
2003 void *req_capsule_server_swab_get(struct req_capsule *pill,
2004 const struct req_msg_field *field,
2007 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2009 EXPORT_SYMBOL(req_capsule_server_swab_get);
2012 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
2014 * First the \a pill's request \a field's size is set (\a rc_area) using
2015 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2018 void *req_capsule_server_sized_get(struct req_capsule *pill,
2019 const struct req_msg_field *field,
2022 req_capsule_set_size(pill, field, RCL_SERVER, len);
2023 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2025 EXPORT_SYMBOL(req_capsule_server_sized_get);
2027 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2028 const struct req_msg_field *field,
2029 int len, void *swabber)
2031 req_capsule_set_size(pill, field, RCL_SERVER, len);
2032 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2034 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2037 * Returns the buffer of a \a pill corresponding to the given \a field from the
2038 * request (if the caller is executing on the server-side) or reply (if the
2039 * caller is executing on the client-side).
2041 * This function convienient for use is code that could be executed on the
2042 * client and server alike.
2044 const void *req_capsule_other_get(struct req_capsule *pill,
2045 const struct req_msg_field *field)
2047 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
2049 EXPORT_SYMBOL(req_capsule_other_get);
2052 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2053 * field of the given \a pill.
2055 * This function must be used when constructing variable sized fields of a
2058 void req_capsule_set_size(struct req_capsule *pill,
2059 const struct req_msg_field *field,
2060 enum req_location loc, int size)
2062 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2064 if ((size != field->rmf_size) &&
2065 (field->rmf_size != -1) &&
2066 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2068 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2069 (size % field->rmf_size != 0)) {
2070 CERROR("%s: array field size mismatch "
2071 "%d %% %d != 0 (%d)\n",
2072 field->rmf_name, size, field->rmf_size, loc);
2074 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2075 size < field->rmf_size) {
2076 CERROR("%s: field size mismatch %d != %d (%d)\n",
2077 field->rmf_name, size, field->rmf_size, loc);
2082 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2084 EXPORT_SYMBOL(req_capsule_set_size);
2087 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2088 * for the given \a pill's given \a field.
2090 * NB: this function doesn't correspond with req_capsule_set_size(), which
2091 * actually sets the size in pill.rc_area[loc][offset], but this function
2092 * returns the message buflen[offset], maybe we should use another name.
2094 int req_capsule_get_size(const struct req_capsule *pill,
2095 const struct req_msg_field *field,
2096 enum req_location loc)
2098 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2100 return lustre_msg_buflen(__req_msg(pill, loc),
2101 __req_capsule_offset(pill, field, loc));
2103 EXPORT_SYMBOL(req_capsule_get_size);
2106 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2107 * given \a pill's request or reply (\a loc) given the field size recorded in
2108 * the \a pill's rc_area.
2110 * See also req_capsule_set_size().
2112 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2114 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2115 pill->rc_fmt->rf_fields[loc].nr,
2116 pill->rc_area[loc]);
2120 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2121 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2122 * PTLRPC request or reply given only an RQF (\a fmt).
2124 * This function should not be used for formats which contain variable size
2127 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2128 enum req_location loc)
2133 * This function should probably LASSERT() that fmt has no fields with
2134 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2135 * elements in the array there will ultimately be, but then, we could
2136 * assume that there will be at least one element, and that's just what
2139 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2143 for (; i < fmt->rf_fields[loc].nr; ++i)
2144 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2145 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2151 * Changes the format of an RPC.
2153 * The pill must already have been initialized, which means that it already has
2154 * a request format. The new format \a fmt must be an extension of the pill's
2155 * old format. Specifically: the new format must have as many request and reply
2156 * fields as the old one, and all fields shared by the old and new format must
2157 * be at least as large in the new format.
2159 * The new format's fields may be of different "type" than the old format, but
2160 * only for fields that are "opaque" blobs: fields which have a) have no
2161 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2162 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2163 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2164 * according to the key field. When the value, according to the key, contains a
2165 * structure (or array thereof) to be swabbed, the format should be changed to
2166 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2169 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2174 const struct req_format *old;
2176 LASSERT(pill->rc_fmt != NULL);
2177 LASSERT(__req_format_is_sane(fmt));
2181 * Sanity checking...
2183 for (i = 0; i < RCL_NR; ++i) {
2184 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2185 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2186 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2188 /* "opaque" fields can be transmogrified */
2189 if (ofield->rmf_swabber == NULL &&
2190 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2191 (ofield->rmf_size == -1 ||
2192 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2194 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2197 * Last field in old format can be shorter than in new.
2199 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2200 FMT_FIELD(old, i, j)->rmf_size);
2205 EXPORT_SYMBOL(req_capsule_extend);
2208 * This function returns a non-zero value if the given \a field is present in
2209 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2212 int req_capsule_has_field(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 field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2220 EXPORT_SYMBOL(req_capsule_has_field);
2223 * Returns a non-zero value if the given \a field is present in the given \a
2224 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2226 int req_capsule_field_present(const struct req_capsule *pill,
2227 const struct req_msg_field *field,
2228 enum req_location loc)
2232 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2233 LASSERT(req_capsule_has_field(pill, field, loc));
2235 offset = __req_capsule_offset(pill, field, loc);
2236 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2238 EXPORT_SYMBOL(req_capsule_field_present);
2241 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2242 * request or reply (\a loc).
2244 * This is not the opposite of req_capsule_extend().
2246 void req_capsule_shrink(struct req_capsule *pill,
2247 const struct req_msg_field *field,
2248 unsigned int newlen,
2249 enum req_location loc)
2251 const struct req_format *fmt;
2252 struct lustre_msg *msg;
2257 LASSERT(fmt != NULL);
2258 LASSERT(__req_format_is_sane(fmt));
2259 LASSERT(req_capsule_has_field(pill, field, loc));
2260 LASSERT(req_capsule_field_present(pill, field, loc));
2262 offset = __req_capsule_offset(pill, field, loc);
2264 msg = __req_msg(pill, loc);
2265 len = lustre_msg_buflen(msg, offset);
2266 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2267 fmt->rf_name, field->rmf_name, len, newlen);
2269 if (loc == RCL_CLIENT)
2270 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2273 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2276 EXPORT_SYMBOL(req_capsule_shrink);
2278 int req_capsule_server_grow(struct req_capsule *pill,
2279 const struct req_msg_field *field,
2280 unsigned int newlen)
2282 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2284 int offset, len, rc;
2286 LASSERT(pill->rc_fmt != NULL);
2287 LASSERT(__req_format_is_sane(pill->rc_fmt));
2288 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2289 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2291 len = req_capsule_get_size(pill, field, RCL_SERVER);
2292 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2293 if (pill->rc_req->rq_repbuf_len >=
2294 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2295 CERROR("Inplace repack might be done\n");
2297 pill->rc_req->rq_reply_state = NULL;
2298 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2299 rc = req_capsule_server_pack(pill);
2301 /* put old rs back, the caller will decide what to do */
2302 pill->rc_req->rq_reply_state = rs;
2305 nrs = pill->rc_req->rq_reply_state;
2306 /* Now we need only buffers, copy first chunk */
2307 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2308 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2309 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2310 memcpy(to, from, len);
2311 /* check if we have tail and copy it too */
2312 if (rs->rs_msg->lm_bufcount > offset + 1) {
2313 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2314 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2315 offset = rs->rs_msg->lm_bufcount - 1;
2316 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2317 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2318 memcpy(to, from, len);
2320 /* drop old reply if everything is fine */
2321 if (rs->rs_difficult) {
2325 nrs->rs_difficult = 1;
2326 nrs->rs_no_ack = rs->rs_no_ack;
2327 for (i = 0; i < rs->rs_nlocks; i++) {
2328 nrs->rs_locks[i] = rs->rs_locks[i];
2329 nrs->rs_modes[i] = rs->rs_modes[i];
2333 rs->rs_difficult = 0;
2336 ptlrpc_rs_decref(rs);
2339 EXPORT_SYMBOL(req_capsule_server_grow);
2340 /* __REQ_LAYOUT_USER__ */