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 struct req_format *req_formats[] = {
606 &RQF_MGS_CONFIG_READ,
615 &RQF_MDS_GETATTR_NAME,
624 &RQF_MDS_DONE_WRITING,
626 &RQF_MDS_REINT_CREATE,
627 &RQF_MDS_REINT_CREATE_RMT_ACL,
628 &RQF_MDS_REINT_CREATE_SLAVE,
629 &RQF_MDS_REINT_CREATE_SYM,
631 &RQF_MDS_REINT_UNLINK,
633 &RQF_MDS_REINT_RENAME,
634 &RQF_MDS_REINT_SETATTR,
635 &RQF_MDS_REINT_SETXATTR,
638 &RQF_MDS_HSM_PROGRESS,
639 &RQF_MDS_HSM_CT_REGISTER,
640 &RQF_MDS_HSM_CT_UNREGISTER,
655 &RQF_OST_SET_GRANT_INFO,
656 &RQF_OST_GET_INFO_GENERIC,
657 &RQF_OST_GET_INFO_LAST_ID,
658 &RQF_OST_GET_INFO_LAST_FID,
659 &RQF_OST_SET_INFO_LAST_FID,
660 &RQF_OST_GET_INFO_FIEMAP,
662 &RQF_LDLM_ENQUEUE_LVB,
666 &RQF_LDLM_CP_CALLBACK,
667 &RQF_LDLM_BL_CALLBACK,
668 &RQF_LDLM_GL_CALLBACK,
669 &RQF_LDLM_GL_DESC_CALLBACK,
671 &RQF_LDLM_INTENT_BASIC,
672 &RQF_LDLM_INTENT_LAYOUT,
673 &RQF_LDLM_INTENT_GETATTR,
674 &RQF_LDLM_INTENT_OPEN,
675 &RQF_LDLM_INTENT_CREATE,
676 &RQF_LDLM_INTENT_UNLINK,
677 &RQF_LDLM_INTENT_QUOTA,
680 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
681 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
682 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
683 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
684 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
685 &RQF_LLOG_ORIGIN_CONNECT
688 struct req_msg_field {
689 const __u32 rmf_flags;
690 const char *rmf_name;
692 * Field length. (-1) means "variable length". If the
693 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
694 * but the actual size must be a whole multiple of \a rmf_size.
697 void (*rmf_swabber)(void *);
698 void (*rmf_dumper)(void *);
699 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
704 * The field is a string, must be NUL-terminated.
706 RMF_F_STRING = 1 << 0,
708 * The field's buffer size need not match the declared \a rmf_size.
710 RMF_F_NO_SIZE_CHECK = 1 << 1,
712 * The field's buffer size must be a whole multiple of the declared \a
713 * rmf_size and the \a rmf_swabber function must work on the declared \a
714 * rmf_size worth of bytes.
716 RMF_F_STRUCT_ARRAY = 1 << 2
724 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
725 .rmf_name = (name), \
726 .rmf_flags = (flags), \
727 .rmf_size = (size), \
728 .rmf_swabber = (void (*)(void*))(swabber), \
729 .rmf_dumper = (void (*)(void*))(dumper) \
732 struct req_msg_field RMF_GENERIC_DATA =
733 DEFINE_MSGF("generic_data", 0,
735 EXPORT_SYMBOL(RMF_GENERIC_DATA);
737 struct req_msg_field RMF_MGS_TARGET_INFO =
738 DEFINE_MSGF("mgs_target_info", 0,
739 sizeof(struct mgs_target_info),
740 lustre_swab_mgs_target_info, NULL);
741 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
743 struct req_msg_field RMF_MGS_SEND_PARAM =
744 DEFINE_MSGF("mgs_send_param", 0,
745 sizeof(struct mgs_send_param),
747 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
749 struct req_msg_field RMF_MGS_CONFIG_BODY =
750 DEFINE_MSGF("mgs_config_read request", 0,
751 sizeof(struct mgs_config_body),
752 lustre_swab_mgs_config_body, NULL);
753 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
755 struct req_msg_field RMF_MGS_CONFIG_RES =
756 DEFINE_MSGF("mgs_config_read reply ", 0,
757 sizeof(struct mgs_config_res),
758 lustre_swab_mgs_config_res, NULL);
759 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
761 struct req_msg_field RMF_U32 =
762 DEFINE_MSGF("generic u32", 0,
763 sizeof(__u32), lustre_swab_generic_32s, NULL);
764 EXPORT_SYMBOL(RMF_U32);
766 struct req_msg_field RMF_SETINFO_VAL =
767 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
768 EXPORT_SYMBOL(RMF_SETINFO_VAL);
770 struct req_msg_field RMF_GETINFO_KEY =
771 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
772 EXPORT_SYMBOL(RMF_GETINFO_KEY);
774 struct req_msg_field RMF_GETINFO_VALLEN =
775 DEFINE_MSGF("getinfo_vallen", 0,
776 sizeof(__u32), lustre_swab_generic_32s, NULL);
777 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
779 struct req_msg_field RMF_GETINFO_VAL =
780 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
781 EXPORT_SYMBOL(RMF_GETINFO_VAL);
783 struct req_msg_field RMF_SEQ_OPC =
784 DEFINE_MSGF("seq_query_opc", 0,
785 sizeof(__u32), lustre_swab_generic_32s, NULL);
786 EXPORT_SYMBOL(RMF_SEQ_OPC);
788 struct req_msg_field RMF_SEQ_RANGE =
789 DEFINE_MSGF("seq_query_range", 0,
790 sizeof(struct lu_seq_range),
791 lustre_swab_lu_seq_range, NULL);
792 EXPORT_SYMBOL(RMF_SEQ_RANGE);
794 struct req_msg_field RMF_FLD_OPC =
795 DEFINE_MSGF("fld_query_opc", 0,
796 sizeof(__u32), lustre_swab_generic_32s, NULL);
797 EXPORT_SYMBOL(RMF_FLD_OPC);
799 struct req_msg_field RMF_FLD_MDFLD =
800 DEFINE_MSGF("fld_query_mdfld", 0,
801 sizeof(struct lu_seq_range),
802 lustre_swab_lu_seq_range, NULL);
803 EXPORT_SYMBOL(RMF_FLD_MDFLD);
805 struct req_msg_field RMF_MDT_BODY =
806 DEFINE_MSGF("mdt_body", 0,
807 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
808 EXPORT_SYMBOL(RMF_MDT_BODY);
810 struct req_msg_field RMF_OBD_QUOTACTL =
811 DEFINE_MSGF("obd_quotactl", 0,
812 sizeof(struct obd_quotactl),
813 lustre_swab_obd_quotactl, NULL);
814 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
816 struct req_msg_field RMF_QUOTA_BODY =
817 DEFINE_MSGF("quota_body", 0,
818 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
819 EXPORT_SYMBOL(RMF_QUOTA_BODY);
821 struct req_msg_field RMF_MDT_EPOCH =
822 DEFINE_MSGF("mdt_ioepoch", 0,
823 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
824 EXPORT_SYMBOL(RMF_MDT_EPOCH);
826 struct req_msg_field RMF_PTLRPC_BODY =
827 DEFINE_MSGF("ptlrpc_body", 0,
828 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
829 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
831 struct req_msg_field RMF_OBD_STATFS =
832 DEFINE_MSGF("obd_statfs", 0,
833 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
834 EXPORT_SYMBOL(RMF_OBD_STATFS);
836 struct req_msg_field RMF_SETINFO_KEY =
837 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
838 EXPORT_SYMBOL(RMF_SETINFO_KEY);
840 struct req_msg_field RMF_NAME =
841 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
842 EXPORT_SYMBOL(RMF_NAME);
844 struct req_msg_field RMF_SYMTGT =
845 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
846 EXPORT_SYMBOL(RMF_SYMTGT);
848 struct req_msg_field RMF_TGTUUID =
849 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
851 EXPORT_SYMBOL(RMF_TGTUUID);
853 struct req_msg_field RMF_CLUUID =
854 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
856 EXPORT_SYMBOL(RMF_CLUUID);
858 struct req_msg_field RMF_STRING =
859 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
860 EXPORT_SYMBOL(RMF_STRING);
862 struct req_msg_field RMF_LLOGD_BODY =
863 DEFINE_MSGF("llogd_body", 0,
864 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
865 EXPORT_SYMBOL(RMF_LLOGD_BODY);
867 struct req_msg_field RMF_LLOG_LOG_HDR =
868 DEFINE_MSGF("llog_log_hdr", 0,
869 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
870 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
872 struct req_msg_field RMF_LLOGD_CONN_BODY =
873 DEFINE_MSGF("llogd_conn_body", 0,
874 sizeof(struct llogd_conn_body),
875 lustre_swab_llogd_conn_body, NULL);
876 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
879 * connection handle received in MDS_CONNECT request.
881 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
882 * that the client does not interpret at all.
884 struct req_msg_field RMF_CONN =
885 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
886 EXPORT_SYMBOL(RMF_CONN);
888 struct req_msg_field RMF_CONNECT_DATA =
890 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
891 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
892 sizeof(struct obd_connect_data),
894 /* For interoperability with 1.8 and 2.0 clients/servers.
895 * The RPC verification code allows larger RPC buffers, but not
896 * smaller buffers. Until we no longer need to keep compatibility
897 * with older servers/clients we can only check that the buffer
898 * size is at least as large as obd_connect_data_v1. That is not
899 * not in itself harmful, since the chance of just corrupting this
900 * field is low. See JIRA LU-16 for details. */
901 sizeof(struct obd_connect_data_v1),
903 lustre_swab_connect, NULL);
904 EXPORT_SYMBOL(RMF_CONNECT_DATA);
906 struct req_msg_field RMF_DLM_REQ =
907 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
908 sizeof(struct ldlm_request),
909 lustre_swab_ldlm_request, NULL);
910 EXPORT_SYMBOL(RMF_DLM_REQ);
912 struct req_msg_field RMF_DLM_REP =
913 DEFINE_MSGF("dlm_rep", 0,
914 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
915 EXPORT_SYMBOL(RMF_DLM_REP);
917 struct req_msg_field RMF_LDLM_INTENT =
918 DEFINE_MSGF("ldlm_intent", 0,
919 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
920 EXPORT_SYMBOL(RMF_LDLM_INTENT);
922 struct req_msg_field RMF_DLM_LVB =
923 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
924 EXPORT_SYMBOL(RMF_DLM_LVB);
926 struct req_msg_field RMF_DLM_GL_DESC =
927 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
928 lustre_swab_gl_desc, NULL);
929 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
931 struct req_msg_field RMF_MDT_MD =
932 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
933 EXPORT_SYMBOL(RMF_MDT_MD);
935 struct req_msg_field RMF_REC_REINT =
936 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
937 lustre_swab_mdt_rec_reint, NULL);
938 EXPORT_SYMBOL(RMF_REC_REINT);
940 /* FIXME: this length should be defined as a macro */
941 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
943 EXPORT_SYMBOL(RMF_EADATA);
945 struct req_msg_field RMF_ACL =
946 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
947 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
948 EXPORT_SYMBOL(RMF_ACL);
950 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
951 struct req_msg_field RMF_LOGCOOKIES =
952 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
953 sizeof(struct llog_cookie), NULL, NULL);
954 EXPORT_SYMBOL(RMF_LOGCOOKIES);
956 struct req_msg_field RMF_CAPA1 =
957 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
958 lustre_swab_lustre_capa, NULL);
959 EXPORT_SYMBOL(RMF_CAPA1);
961 struct req_msg_field RMF_CAPA2 =
962 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
963 lustre_swab_lustre_capa, NULL);
964 EXPORT_SYMBOL(RMF_CAPA2);
966 struct req_msg_field RMF_LAYOUT_INTENT =
967 DEFINE_MSGF("layout_intent", 0,
968 sizeof(struct layout_intent), lustre_swab_layout_intent,
970 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
975 struct req_msg_field RMF_OST_BODY =
976 DEFINE_MSGF("ost_body", 0,
977 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
978 EXPORT_SYMBOL(RMF_OST_BODY);
980 struct req_msg_field RMF_OBD_IOOBJ =
981 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
982 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
983 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
985 struct req_msg_field RMF_NIOBUF_REMOTE =
986 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
987 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
989 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
991 struct req_msg_field RMF_RCS =
992 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
993 lustre_swab_generic_32s, dump_rcs);
994 EXPORT_SYMBOL(RMF_RCS);
996 struct req_msg_field RMF_OBD_ID =
997 DEFINE_MSGF("obd_id", 0,
998 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
999 EXPORT_SYMBOL(RMF_OBD_ID);
1001 struct req_msg_field RMF_FID =
1002 DEFINE_MSGF("fid", 0,
1003 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1004 EXPORT_SYMBOL(RMF_FID);
1006 struct req_msg_field RMF_FIEMAP_KEY =
1007 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1008 lustre_swab_fiemap, NULL);
1009 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1011 struct req_msg_field RMF_FIEMAP_VAL =
1012 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1013 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1015 struct req_msg_field RMF_IDX_INFO =
1016 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1017 lustre_swab_idx_info, NULL);
1018 EXPORT_SYMBOL(RMF_IDX_INFO);
1020 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1021 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1022 lustre_swab_hsm_progress_kernel, NULL);
1023 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1025 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1026 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1027 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1029 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1031 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1032 DEFINE_MSGF("hsm_archive", 0,
1033 sizeof(__u32), lustre_swab_generic_32s, NULL);
1034 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1041 const char *rf_name;
1045 const struct req_msg_field **d;
1046 } rf_fields[RCL_NR];
1049 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1063 #define DEFINE_REQ_FMT0(name, client, server) \
1064 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1066 struct req_format RQF_OBD_PING =
1067 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1068 EXPORT_SYMBOL(RQF_OBD_PING);
1070 struct req_format RQF_OBD_SET_INFO =
1071 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1072 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1074 /* Read index file through the network */
1075 struct req_format RQF_OBD_IDX_READ =
1076 DEFINE_REQ_FMT0("OBD_IDX_READ",
1077 obd_idx_read_client, obd_idx_read_server);
1078 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1080 struct req_format RQF_SEC_CTX =
1081 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1082 EXPORT_SYMBOL(RQF_SEC_CTX);
1084 struct req_format RQF_MGS_TARGET_REG =
1085 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1086 mgs_target_info_only);
1087 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1089 struct req_format RQF_MGS_SET_INFO =
1090 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1092 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1094 struct req_format RQF_MGS_CONFIG_READ =
1095 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1096 mgs_config_read_server);
1097 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1099 struct req_format RQF_SEQ_QUERY =
1100 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1101 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1103 struct req_format RQF_FLD_QUERY =
1104 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1105 EXPORT_SYMBOL(RQF_FLD_QUERY);
1107 struct req_format RQF_LOG_CANCEL =
1108 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1109 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1111 struct req_format RQF_MDS_QUOTACHECK =
1112 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1113 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1115 struct req_format RQF_OST_QUOTACHECK =
1116 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1117 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1119 struct req_format RQF_MDS_QUOTACTL =
1120 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1121 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1123 struct req_format RQF_OST_QUOTACTL =
1124 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1125 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1127 struct req_format RQF_QC_CALLBACK =
1128 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1129 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1131 struct req_format RQF_QUOTA_DQACQ =
1132 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1133 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1135 struct req_format RQF_LDLM_INTENT_QUOTA =
1136 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1137 ldlm_intent_quota_client,
1138 ldlm_intent_quota_server);
1139 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1141 struct req_format RQF_MDS_GETSTATUS =
1142 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1143 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1145 struct req_format RQF_MDS_STATFS =
1146 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1147 EXPORT_SYMBOL(RQF_MDS_STATFS);
1149 struct req_format RQF_MDS_SYNC =
1150 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1151 EXPORT_SYMBOL(RQF_MDS_SYNC);
1153 struct req_format RQF_MDS_GETATTR =
1154 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1155 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1157 struct req_format RQF_MDS_GETXATTR =
1158 DEFINE_REQ_FMT0("MDS_GETXATTR",
1159 mds_getxattr_client, mds_getxattr_server);
1160 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1162 struct req_format RQF_MDS_GETATTR_NAME =
1163 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1164 mds_getattr_name_client, mds_getattr_server);
1165 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1167 struct req_format RQF_MDS_REINT =
1168 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1169 EXPORT_SYMBOL(RQF_MDS_REINT);
1171 struct req_format RQF_MDS_REINT_CREATE =
1172 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1173 mds_reint_create_client, mdt_body_capa);
1174 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1176 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1177 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1178 mds_reint_create_rmt_acl_client, mdt_body_capa);
1179 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1181 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1182 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1183 mds_reint_create_slave_client, mdt_body_capa);
1184 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1186 struct req_format RQF_MDS_REINT_CREATE_SYM =
1187 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1188 mds_reint_create_sym_client, mdt_body_capa);
1189 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1191 struct req_format RQF_MDS_REINT_OPEN =
1192 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1193 mds_reint_open_client, mds_reint_open_server);
1194 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1196 struct req_format RQF_MDS_REINT_UNLINK =
1197 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1198 mds_last_unlink_server);
1199 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1201 struct req_format RQF_MDS_REINT_LINK =
1202 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1203 mds_reint_link_client, mdt_body_only);
1204 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1206 struct req_format RQF_MDS_REINT_RENAME =
1207 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1208 mds_last_unlink_server);
1209 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1211 struct req_format RQF_MDS_REINT_SETATTR =
1212 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1213 mds_reint_setattr_client, mds_setattr_server);
1214 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1216 struct req_format RQF_MDS_REINT_SETXATTR =
1217 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1218 mds_reint_setxattr_client, mdt_body_only);
1219 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1221 struct req_format RQF_MDS_CONNECT =
1222 DEFINE_REQ_FMT0("MDS_CONNECT",
1223 obd_connect_client, obd_connect_server);
1224 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1226 struct req_format RQF_MDS_DISCONNECT =
1227 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1228 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1230 struct req_format RQF_MDS_GET_INFO =
1231 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1232 mds_getinfo_server);
1233 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1235 struct req_format RQF_LDLM_ENQUEUE =
1236 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1237 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1238 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1240 struct req_format RQF_LDLM_ENQUEUE_LVB =
1241 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1242 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1243 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1245 struct req_format RQF_LDLM_CONVERT =
1246 DEFINE_REQ_FMT0("LDLM_CONVERT",
1247 ldlm_enqueue_client, ldlm_enqueue_server);
1248 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1250 struct req_format RQF_LDLM_CANCEL =
1251 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1252 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1254 struct req_format RQF_LDLM_CALLBACK =
1255 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1256 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1258 struct req_format RQF_LDLM_CP_CALLBACK =
1259 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1260 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1262 struct req_format RQF_LDLM_BL_CALLBACK =
1263 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1264 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1266 struct req_format RQF_LDLM_GL_CALLBACK =
1267 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1268 ldlm_gl_callback_server);
1269 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1271 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1272 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1273 ldlm_gl_callback_server);
1274 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1276 struct req_format RQF_LDLM_INTENT_BASIC =
1277 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1278 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1279 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1281 struct req_format RQF_LDLM_INTENT =
1282 DEFINE_REQ_FMT0("LDLM_INTENT",
1283 ldlm_intent_client, ldlm_intent_server);
1284 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1286 struct req_format RQF_LDLM_INTENT_LAYOUT =
1287 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1288 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1289 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1291 struct req_format RQF_LDLM_INTENT_GETATTR =
1292 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1293 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1294 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1296 struct req_format RQF_LDLM_INTENT_OPEN =
1297 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1298 ldlm_intent_open_client, ldlm_intent_open_server);
1299 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1301 struct req_format RQF_LDLM_INTENT_CREATE =
1302 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1303 ldlm_intent_create_client, ldlm_intent_getattr_server);
1304 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1306 struct req_format RQF_LDLM_INTENT_UNLINK =
1307 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1308 ldlm_intent_unlink_client, ldlm_intent_server);
1309 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1311 struct req_format RQF_MDS_CLOSE =
1312 DEFINE_REQ_FMT0("MDS_CLOSE",
1313 mdt_close_client, mds_last_unlink_server);
1314 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1316 struct req_format RQF_MDS_PIN =
1317 DEFINE_REQ_FMT0("MDS_PIN",
1318 mdt_body_capa, mdt_body_only);
1319 EXPORT_SYMBOL(RQF_MDS_PIN);
1321 struct req_format RQF_MDS_UNPIN =
1322 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1323 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1325 struct req_format RQF_MDS_DONE_WRITING =
1326 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1327 mdt_close_client, mdt_body_only);
1328 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1330 struct req_format RQF_MDS_READPAGE =
1331 DEFINE_REQ_FMT0("MDS_READPAGE",
1332 mdt_body_capa, mdt_body_only);
1333 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1335 struct req_format RQF_MDS_HSM_PROGRESS =
1336 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1337 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1339 struct req_format RQF_MDS_HSM_CT_REGISTER =
1340 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1341 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1343 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1344 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", empty, empty);
1345 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1347 /* This is for split */
1348 struct req_format RQF_MDS_WRITEPAGE =
1349 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1350 mdt_body_capa, mdt_body_only);
1351 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1353 struct req_format RQF_MDS_IS_SUBDIR =
1354 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1355 mdt_body_only, mdt_body_only);
1356 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1358 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1359 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1360 llog_origin_handle_create_client, llogd_body_only);
1361 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1363 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1364 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1365 llogd_body_only, llogd_body_only);
1366 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1368 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1369 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1370 llogd_body_only, llog_origin_handle_next_block_server);
1371 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1373 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1374 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1375 llogd_body_only, llog_origin_handle_next_block_server);
1376 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1378 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1379 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1380 llogd_body_only, llog_log_hdr_only);
1381 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1383 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1384 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1385 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1387 struct req_format RQF_OST_CONNECT =
1388 DEFINE_REQ_FMT0("OST_CONNECT",
1389 obd_connect_client, obd_connect_server);
1390 EXPORT_SYMBOL(RQF_OST_CONNECT);
1392 struct req_format RQF_OST_DISCONNECT =
1393 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1394 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1396 struct req_format RQF_OST_GETATTR =
1397 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1398 EXPORT_SYMBOL(RQF_OST_GETATTR);
1400 struct req_format RQF_OST_SETATTR =
1401 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1402 EXPORT_SYMBOL(RQF_OST_SETATTR);
1404 struct req_format RQF_OST_CREATE =
1405 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1406 EXPORT_SYMBOL(RQF_OST_CREATE);
1408 struct req_format RQF_OST_PUNCH =
1409 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1410 EXPORT_SYMBOL(RQF_OST_PUNCH);
1412 struct req_format RQF_OST_SYNC =
1413 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1414 EXPORT_SYMBOL(RQF_OST_SYNC);
1416 struct req_format RQF_OST_DESTROY =
1417 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1418 EXPORT_SYMBOL(RQF_OST_DESTROY);
1420 struct req_format RQF_OST_BRW_READ =
1421 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1422 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1424 struct req_format RQF_OST_BRW_WRITE =
1425 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1426 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1428 struct req_format RQF_OST_STATFS =
1429 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1430 EXPORT_SYMBOL(RQF_OST_STATFS);
1432 struct req_format RQF_OST_SET_GRANT_INFO =
1433 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1435 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1437 struct req_format RQF_OST_GET_INFO_GENERIC =
1438 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1439 ost_get_info_generic_server);
1440 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1442 struct req_format RQF_OST_GET_INFO_LAST_ID =
1443 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1444 ost_get_last_id_server);
1445 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1447 struct req_format RQF_OST_GET_INFO_LAST_FID =
1448 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1449 ost_get_last_fid_server);
1450 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1452 struct req_format RQF_OST_SET_INFO_LAST_FID =
1453 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1455 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1457 struct req_format RQF_OST_GET_INFO_FIEMAP =
1458 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1459 ost_get_fiemap_server);
1460 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1462 #if !defined(__REQ_LAYOUT_USER__)
1464 /* Convenience macro */
1465 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1468 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1469 * field of RQFs and the \a rmf_offset field of RMFs.
1471 int req_layout_init(void)
1476 struct req_format *rf = NULL;
1478 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1479 rf = req_formats[i];
1481 for (j = 0; j < RCL_NR; ++j) {
1482 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1483 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1484 struct req_msg_field *field;
1486 field = (typeof(field))rf->rf_fields[j].d[k];
1487 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1488 || field->rmf_size > 0);
1489 LASSERT(field->rmf_offset[i][j] == 0);
1491 * k + 1 to detect unused format/field
1494 field->rmf_offset[i][j] = k + 1;
1500 EXPORT_SYMBOL(req_layout_init);
1502 void req_layout_fini(void)
1505 EXPORT_SYMBOL(req_layout_fini);
1508 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1510 * Actual/expected field sizes are set elsewhere in functions in this file:
1511 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1512 * req_capsule_msg_size(). The \a rc_area information is used by.
1513 * ptlrpc_request_set_replen().
1515 void req_capsule_init_area(struct req_capsule *pill)
1519 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1520 pill->rc_area[RCL_CLIENT][i] = -1;
1521 pill->rc_area[RCL_SERVER][i] = -1;
1524 EXPORT_SYMBOL(req_capsule_init_area);
1527 * Initialize a pill.
1529 * The \a location indicates whether the caller is executing on the client side
1530 * (RCL_CLIENT) or server side (RCL_SERVER)..
1532 void req_capsule_init(struct req_capsule *pill,
1533 struct ptlrpc_request *req,
1534 enum req_location location)
1536 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1539 * Today all capsules are embedded in ptlrpc_request structs,
1540 * but just in case that ever isn't the case, we don't reach
1541 * into req unless req != NULL and pill is the one embedded in
1544 * The req->rq_pill_init flag makes it safe to initialize a pill
1545 * twice, which might happen in the OST paths as a result of the
1546 * high-priority RPC queue getting peeked at before ost_handle()
1547 * handles an OST RPC.
1549 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1552 memset(pill, 0, sizeof *pill);
1554 pill->rc_loc = location;
1555 req_capsule_init_area(pill);
1557 if (req != NULL && pill == &req->rq_pill)
1558 req->rq_pill_init = 1;
1560 EXPORT_SYMBOL(req_capsule_init);
1562 void req_capsule_fini(struct req_capsule *pill)
1565 EXPORT_SYMBOL(req_capsule_fini);
1567 static int __req_format_is_sane(const struct req_format *fmt)
1570 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1571 req_formats[fmt->rf_idx] == fmt;
1574 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1575 enum req_location loc)
1577 struct ptlrpc_request *req;
1580 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1584 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1585 * (see req_capsule_extend()).
1587 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1589 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1590 LASSERT(__req_format_is_sane(fmt));
1594 EXPORT_SYMBOL(req_capsule_set);
1597 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1600 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1601 * variable-sized fields. The field sizes come from the declared \a rmf_size
1602 * field of a \a pill's \a rc_fmt's RMF's.
1604 int req_capsule_filled_sizes(struct req_capsule *pill,
1605 enum req_location loc)
1607 const struct req_format *fmt = pill->rc_fmt;
1610 LASSERT(fmt != NULL);
1612 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1613 if (pill->rc_area[loc][i] == -1) {
1614 pill->rc_area[loc][i] =
1615 fmt->rf_fields[loc].d[i]->rmf_size;
1616 if (pill->rc_area[loc][i] == -1) {
1618 * Skip the following fields.
1620 * If this LASSERT() trips then you're missing a
1621 * call to req_capsule_set_size().
1623 LASSERT(loc != RCL_SERVER);
1630 EXPORT_SYMBOL(req_capsule_filled_sizes);
1633 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1635 * This function uses the \a pill's \a rc_area as filled in by
1636 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1639 int req_capsule_server_pack(struct req_capsule *pill)
1641 const struct req_format *fmt;
1645 LASSERT(pill->rc_loc == RCL_SERVER);
1647 LASSERT(fmt != NULL);
1649 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1650 rc = lustre_pack_reply(pill->rc_req, count,
1651 pill->rc_area[RCL_SERVER], NULL);
1653 DEBUG_REQ(D_ERROR, pill->rc_req,
1654 "Cannot pack %d fields in format `%s': ",
1655 count, fmt->rf_name);
1659 EXPORT_SYMBOL(req_capsule_server_pack);
1662 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1663 * corresponding to the given RMF (\a field).
1665 static int __req_capsule_offset(const struct req_capsule *pill,
1666 const struct req_msg_field *field,
1667 enum req_location loc)
1671 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1672 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1673 pill->rc_fmt->rf_name,
1674 field->rmf_name, offset, loc);
1677 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1682 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1687 swabber_dumper_helper(struct req_capsule *pill,
1688 const struct req_msg_field *field,
1689 enum req_location loc,
1691 void *value, int len, int dump, void (*swabber)( void *))
1697 int inout = loc == RCL_CLIENT;
1699 swabber = swabber ?: field->rmf_swabber;
1701 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1702 swabber != NULL && value != NULL)
1707 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1708 if (dump && field->rmf_dumper) {
1709 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1710 do_swab ? "unswabbed " : "", field->rmf_name);
1711 field->rmf_dumper(value);
1716 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1718 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1719 "follows\n", field->rmf_name);
1720 field->rmf_dumper(value);
1727 * We're swabbing an array; swabber() swabs a single array element, so
1728 * swab every element.
1730 LASSERT((len % field->rmf_size) == 0);
1731 for (p = value, i = 0, n = len / field->rmf_size;
1733 i++, p += field->rmf_size) {
1734 if (dump && field->rmf_dumper) {
1735 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1736 "element %d follows\n",
1737 do_swab ? "unswabbed " : "", field->rmf_name, i);
1738 field->rmf_dumper(p);
1743 if (dump && field->rmf_dumper) {
1744 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1745 "element %d follows\n", field->rmf_name, i);
1746 field->rmf_dumper(value);
1750 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1754 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1755 * corresponding to the given RMF (\a field).
1757 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1758 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1759 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1760 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1761 * element of the array swabbed.
1763 static void *__req_capsule_get(struct req_capsule *pill,
1764 const struct req_msg_field *field,
1765 enum req_location loc,
1766 void (*swabber)( void *),
1769 const struct req_format *fmt;
1770 struct lustre_msg *msg;
1775 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1777 static const char *rcl_names[RCL_NR] = {
1778 [RCL_CLIENT] = "client",
1779 [RCL_SERVER] = "server"
1782 LASSERT(pill != NULL);
1783 LASSERT(pill != LP_POISON);
1785 LASSERT(fmt != NULL);
1786 LASSERT(fmt != LP_POISON);
1787 LASSERT(__req_format_is_sane(fmt));
1789 offset = __req_capsule_offset(pill, field, loc);
1791 msg = __req_msg(pill, loc);
1792 LASSERT(msg != NULL);
1794 getter = (field->rmf_flags & RMF_F_STRING) ?
1795 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1797 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1799 * We've already asserted that field->rmf_size > 0 in
1800 * req_layout_init().
1802 len = lustre_msg_buflen(msg, offset);
1803 if ((len % field->rmf_size) != 0) {
1804 CERROR("%s: array field size mismatch "
1805 "%d modulo %d != 0 (%d)\n",
1806 field->rmf_name, len, field->rmf_size, loc);
1809 } else if (pill->rc_area[loc][offset] != -1) {
1810 len = pill->rc_area[loc][offset];
1812 len = max(field->rmf_size, 0);
1814 value = getter(msg, offset, len);
1816 if (value == NULL) {
1817 DEBUG_REQ(D_ERROR, pill->rc_req,
1818 "Wrong buffer for field `%s' (%d of %d) "
1819 "in format `%s': %d vs. %d (%s)\n",
1820 field->rmf_name, offset, lustre_msg_bufcount(msg),
1821 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1824 swabber_dumper_helper(pill, field, loc, offset, value, len,
1832 * Dump a request and/or reply
1834 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
1836 const struct req_format *fmt;
1837 const struct req_msg_field *field;
1843 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
1844 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1845 field = FMT_FIELD(fmt, loc, i);
1846 if (field->rmf_dumper == NULL) {
1848 * FIXME Add a default hex dumper for fields that don't
1849 * have a specific dumper
1851 len = req_capsule_get_size(pill, field, loc);
1852 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
1853 "field size is %d\n", field->rmf_name, len);
1855 /* It's the dumping side-effect that we're interested in */
1856 (void) __req_capsule_get(pill, field, loc, NULL, 1);
1859 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
1865 void req_capsule_client_dump(struct req_capsule *pill)
1867 __req_capsule_dump(pill, RCL_CLIENT);
1869 EXPORT_SYMBOL(req_capsule_client_dump);
1874 void req_capsule_server_dump(struct req_capsule *pill)
1876 __req_capsule_dump(pill, RCL_SERVER);
1878 EXPORT_SYMBOL(req_capsule_server_dump);
1881 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1882 * buffer corresponding to the given RMF (\a field) of a \a pill.
1884 void *req_capsule_client_get(struct req_capsule *pill,
1885 const struct req_msg_field *field)
1887 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1889 EXPORT_SYMBOL(req_capsule_client_get);
1892 * Same as req_capsule_client_get(), but with a \a swabber argument.
1894 * Currently unused; will be removed when req_capsule_server_swab_get() is
1897 void *req_capsule_client_swab_get(struct req_capsule *pill,
1898 const struct req_msg_field *field,
1901 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1903 EXPORT_SYMBOL(req_capsule_client_swab_get);
1906 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
1908 * First the \a pill's request \a field's size is set (\a rc_area) using
1909 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1912 void *req_capsule_client_sized_get(struct req_capsule *pill,
1913 const struct req_msg_field *field,
1916 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1917 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1919 EXPORT_SYMBOL(req_capsule_client_sized_get);
1922 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
1923 * buffer corresponding to the given RMF (\a field) of a \a pill.
1925 void *req_capsule_server_get(struct req_capsule *pill,
1926 const struct req_msg_field *field)
1928 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1930 EXPORT_SYMBOL(req_capsule_server_get);
1933 * Same as req_capsule_server_get(), but with a \a swabber argument.
1935 * Ideally all swabbing should be done pursuant to RMF definitions, with no
1936 * swabbing done outside this capsule abstraction.
1938 void *req_capsule_server_swab_get(struct req_capsule *pill,
1939 const struct req_msg_field *field,
1942 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1944 EXPORT_SYMBOL(req_capsule_server_swab_get);
1947 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
1949 * First the \a pill's request \a field's size is set (\a rc_area) using
1950 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1953 void *req_capsule_server_sized_get(struct req_capsule *pill,
1954 const struct req_msg_field *field,
1957 req_capsule_set_size(pill, field, RCL_SERVER, len);
1958 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1960 EXPORT_SYMBOL(req_capsule_server_sized_get);
1962 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
1963 const struct req_msg_field *field,
1964 int len, void *swabber)
1966 req_capsule_set_size(pill, field, RCL_SERVER, len);
1967 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1969 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
1972 * Returns the buffer of a \a pill corresponding to the given \a field from the
1973 * request (if the caller is executing on the server-side) or reply (if the
1974 * caller is executing on the client-side).
1976 * This function convienient for use is code that could be executed on the
1977 * client and server alike.
1979 const void *req_capsule_other_get(struct req_capsule *pill,
1980 const struct req_msg_field *field)
1982 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
1984 EXPORT_SYMBOL(req_capsule_other_get);
1987 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
1988 * field of the given \a pill.
1990 * This function must be used when constructing variable sized fields of a
1993 void req_capsule_set_size(struct req_capsule *pill,
1994 const struct req_msg_field *field,
1995 enum req_location loc, int size)
1997 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1999 if ((size != field->rmf_size) &&
2000 (field->rmf_size != -1) &&
2001 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2003 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2004 (size % field->rmf_size != 0)) {
2005 CERROR("%s: array field size mismatch "
2006 "%d %% %d != 0 (%d)\n",
2007 field->rmf_name, size, field->rmf_size, loc);
2009 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2010 size < field->rmf_size) {
2011 CERROR("%s: field size mismatch %d != %d (%d)\n",
2012 field->rmf_name, size, field->rmf_size, loc);
2017 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2019 EXPORT_SYMBOL(req_capsule_set_size);
2022 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2023 * for the given \a pill's given \a field.
2025 * NB: this function doesn't correspond with req_capsule_set_size(), which
2026 * actually sets the size in pill.rc_area[loc][offset], but this function
2027 * returns the message buflen[offset], maybe we should use another name.
2029 int req_capsule_get_size(const struct req_capsule *pill,
2030 const struct req_msg_field *field,
2031 enum req_location loc)
2033 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2035 return lustre_msg_buflen(__req_msg(pill, loc),
2036 __req_capsule_offset(pill, field, loc));
2038 EXPORT_SYMBOL(req_capsule_get_size);
2041 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2042 * given \a pill's request or reply (\a loc) given the field size recorded in
2043 * the \a pill's rc_area.
2045 * See also req_capsule_set_size().
2047 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2049 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2050 pill->rc_fmt->rf_fields[loc].nr,
2051 pill->rc_area[loc]);
2055 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2056 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2057 * PTLRPC request or reply given only an RQF (\a fmt).
2059 * This function should not be used for formats which contain variable size
2062 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2063 enum req_location loc)
2068 * This function should probably LASSERT() that fmt has no fields with
2069 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2070 * elements in the array there will ultimately be, but then, we could
2071 * assume that there will be at least one element, and that's just what
2074 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2078 for (; i < fmt->rf_fields[loc].nr; ++i)
2079 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2080 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2086 * Changes the format of an RPC.
2088 * The pill must already have been initialized, which means that it already has
2089 * a request format. The new format \a fmt must be an extension of the pill's
2090 * old format. Specifically: the new format must have as many request and reply
2091 * fields as the old one, and all fields shared by the old and new format must
2092 * be at least as large in the new format.
2094 * The new format's fields may be of different "type" than the old format, but
2095 * only for fields that are "opaque" blobs: fields which have a) have no
2096 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2097 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2098 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2099 * according to the key field. When the value, according to the key, contains a
2100 * structure (or array thereof) to be swabbed, the format should be changed to
2101 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2104 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2109 const struct req_format *old;
2111 LASSERT(pill->rc_fmt != NULL);
2112 LASSERT(__req_format_is_sane(fmt));
2116 * Sanity checking...
2118 for (i = 0; i < RCL_NR; ++i) {
2119 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2120 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2121 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2123 /* "opaque" fields can be transmogrified */
2124 if (ofield->rmf_swabber == NULL &&
2125 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2126 (ofield->rmf_size == -1 ||
2127 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2129 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2132 * Last field in old format can be shorter than in new.
2134 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2135 FMT_FIELD(old, i, j)->rmf_size);
2140 EXPORT_SYMBOL(req_capsule_extend);
2143 * This function returns a non-zero value if the given \a field is present in
2144 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2147 int req_capsule_has_field(const struct req_capsule *pill,
2148 const struct req_msg_field *field,
2149 enum req_location loc)
2151 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2153 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2155 EXPORT_SYMBOL(req_capsule_has_field);
2158 * Returns a non-zero value if the given \a field is present in the given \a
2159 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2161 int req_capsule_field_present(const struct req_capsule *pill,
2162 const struct req_msg_field *field,
2163 enum req_location loc)
2167 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2168 LASSERT(req_capsule_has_field(pill, field, loc));
2170 offset = __req_capsule_offset(pill, field, loc);
2171 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2173 EXPORT_SYMBOL(req_capsule_field_present);
2176 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2177 * request or reply (\a loc).
2179 * This is not the opposite of req_capsule_extend().
2181 void req_capsule_shrink(struct req_capsule *pill,
2182 const struct req_msg_field *field,
2183 unsigned int newlen,
2184 enum req_location loc)
2186 const struct req_format *fmt;
2187 struct lustre_msg *msg;
2192 LASSERT(fmt != NULL);
2193 LASSERT(__req_format_is_sane(fmt));
2194 LASSERT(req_capsule_has_field(pill, field, loc));
2195 LASSERT(req_capsule_field_present(pill, field, loc));
2197 offset = __req_capsule_offset(pill, field, loc);
2199 msg = __req_msg(pill, loc);
2200 len = lustre_msg_buflen(msg, offset);
2201 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2202 fmt->rf_name, field->rmf_name, len, newlen);
2204 if (loc == RCL_CLIENT)
2205 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2208 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2211 EXPORT_SYMBOL(req_capsule_shrink);
2213 int req_capsule_server_grow(struct req_capsule *pill,
2214 const struct req_msg_field *field,
2215 unsigned int newlen)
2217 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2219 int offset, len, rc;
2221 LASSERT(pill->rc_fmt != NULL);
2222 LASSERT(__req_format_is_sane(pill->rc_fmt));
2223 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2224 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2226 len = req_capsule_get_size(pill, field, RCL_SERVER);
2227 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2228 if (pill->rc_req->rq_repbuf_len >=
2229 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2230 CERROR("Inplace repack might be done\n");
2232 pill->rc_req->rq_reply_state = NULL;
2233 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2234 rc = req_capsule_server_pack(pill);
2236 /* put old rs back, the caller will decide what to do */
2237 pill->rc_req->rq_reply_state = rs;
2240 nrs = pill->rc_req->rq_reply_state;
2241 /* Now we need only buffers, copy first chunk */
2242 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2243 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2244 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2245 memcpy(to, from, len);
2246 /* check if we have tail and copy it too */
2247 if (rs->rs_msg->lm_bufcount > offset + 1) {
2248 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2249 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2250 offset = rs->rs_msg->lm_bufcount - 1;
2251 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2252 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2253 memcpy(to, from, len);
2255 /* drop old reply if everything is fine */
2256 if (rs->rs_difficult) {
2260 nrs->rs_difficult = 1;
2261 nrs->rs_no_ack = rs->rs_no_ack;
2262 for (i = 0; i < rs->rs_nlocks; i++) {
2263 nrs->rs_locks[i] = rs->rs_locks[i];
2264 nrs->rs_modes[i] = rs->rs_modes[i];
2268 rs->rs_difficult = 0;
2271 ptlrpc_rs_decref(rs);
2274 EXPORT_SYMBOL(req_capsule_server_grow);
2275 /* __REQ_LAYOUT_USER__ */