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 struct req_format *req_formats[] = {
596 &RQF_MGS_CONFIG_READ,
605 &RQF_MDS_GETATTR_NAME,
614 &RQF_MDS_DONE_WRITING,
616 &RQF_MDS_REINT_CREATE,
617 &RQF_MDS_REINT_CREATE_RMT_ACL,
618 &RQF_MDS_REINT_CREATE_SLAVE,
619 &RQF_MDS_REINT_CREATE_SYM,
621 &RQF_MDS_REINT_UNLINK,
623 &RQF_MDS_REINT_RENAME,
624 &RQF_MDS_REINT_SETATTR,
625 &RQF_MDS_REINT_SETXATTR,
642 &RQF_OST_SET_GRANT_INFO,
643 &RQF_OST_GET_INFO_GENERIC,
644 &RQF_OST_GET_INFO_LAST_ID,
645 &RQF_OST_GET_INFO_LAST_FID,
646 &RQF_OST_SET_INFO_LAST_FID,
647 &RQF_OST_GET_INFO_FIEMAP,
649 &RQF_LDLM_ENQUEUE_LVB,
653 &RQF_LDLM_CP_CALLBACK,
654 &RQF_LDLM_BL_CALLBACK,
655 &RQF_LDLM_GL_CALLBACK,
656 &RQF_LDLM_GL_DESC_CALLBACK,
658 &RQF_LDLM_INTENT_BASIC,
659 &RQF_LDLM_INTENT_LAYOUT,
660 &RQF_LDLM_INTENT_GETATTR,
661 &RQF_LDLM_INTENT_OPEN,
662 &RQF_LDLM_INTENT_CREATE,
663 &RQF_LDLM_INTENT_UNLINK,
664 &RQF_LDLM_INTENT_QUOTA,
667 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
668 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
669 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
670 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
671 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
672 &RQF_LLOG_ORIGIN_CONNECT
675 struct req_msg_field {
676 const __u32 rmf_flags;
677 const char *rmf_name;
679 * Field length. (-1) means "variable length". If the
680 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
681 * but the actual size must be a whole multiple of \a rmf_size.
684 void (*rmf_swabber)(void *);
685 void (*rmf_dumper)(void *);
686 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
691 * The field is a string, must be NUL-terminated.
693 RMF_F_STRING = 1 << 0,
695 * The field's buffer size need not match the declared \a rmf_size.
697 RMF_F_NO_SIZE_CHECK = 1 << 1,
699 * The field's buffer size must be a whole multiple of the declared \a
700 * rmf_size and the \a rmf_swabber function must work on the declared \a
701 * rmf_size worth of bytes.
703 RMF_F_STRUCT_ARRAY = 1 << 2
711 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
712 .rmf_name = (name), \
713 .rmf_flags = (flags), \
714 .rmf_size = (size), \
715 .rmf_swabber = (void (*)(void*))(swabber), \
716 .rmf_dumper = (void (*)(void*))(dumper) \
719 struct req_msg_field RMF_GENERIC_DATA =
720 DEFINE_MSGF("generic_data", 0,
722 EXPORT_SYMBOL(RMF_GENERIC_DATA);
724 struct req_msg_field RMF_MGS_TARGET_INFO =
725 DEFINE_MSGF("mgs_target_info", 0,
726 sizeof(struct mgs_target_info),
727 lustre_swab_mgs_target_info, NULL);
728 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
730 struct req_msg_field RMF_MGS_SEND_PARAM =
731 DEFINE_MSGF("mgs_send_param", 0,
732 sizeof(struct mgs_send_param),
734 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
736 struct req_msg_field RMF_MGS_CONFIG_BODY =
737 DEFINE_MSGF("mgs_config_read request", 0,
738 sizeof(struct mgs_config_body),
739 lustre_swab_mgs_config_body, NULL);
740 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
742 struct req_msg_field RMF_MGS_CONFIG_RES =
743 DEFINE_MSGF("mgs_config_read reply ", 0,
744 sizeof(struct mgs_config_res),
745 lustre_swab_mgs_config_res, NULL);
746 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
748 struct req_msg_field RMF_U32 =
749 DEFINE_MSGF("generic u32", 0,
750 sizeof(__u32), lustre_swab_generic_32s, NULL);
751 EXPORT_SYMBOL(RMF_U32);
753 struct req_msg_field RMF_SETINFO_VAL =
754 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
755 EXPORT_SYMBOL(RMF_SETINFO_VAL);
757 struct req_msg_field RMF_GETINFO_KEY =
758 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
759 EXPORT_SYMBOL(RMF_GETINFO_KEY);
761 struct req_msg_field RMF_GETINFO_VALLEN =
762 DEFINE_MSGF("getinfo_vallen", 0,
763 sizeof(__u32), lustre_swab_generic_32s, NULL);
764 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
766 struct req_msg_field RMF_GETINFO_VAL =
767 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
768 EXPORT_SYMBOL(RMF_GETINFO_VAL);
770 struct req_msg_field RMF_SEQ_OPC =
771 DEFINE_MSGF("seq_query_opc", 0,
772 sizeof(__u32), lustre_swab_generic_32s, NULL);
773 EXPORT_SYMBOL(RMF_SEQ_OPC);
775 struct req_msg_field RMF_SEQ_RANGE =
776 DEFINE_MSGF("seq_query_range", 0,
777 sizeof(struct lu_seq_range),
778 lustre_swab_lu_seq_range, NULL);
779 EXPORT_SYMBOL(RMF_SEQ_RANGE);
781 struct req_msg_field RMF_FLD_OPC =
782 DEFINE_MSGF("fld_query_opc", 0,
783 sizeof(__u32), lustre_swab_generic_32s, NULL);
784 EXPORT_SYMBOL(RMF_FLD_OPC);
786 struct req_msg_field RMF_FLD_MDFLD =
787 DEFINE_MSGF("fld_query_mdfld", 0,
788 sizeof(struct lu_seq_range),
789 lustre_swab_lu_seq_range, NULL);
790 EXPORT_SYMBOL(RMF_FLD_MDFLD);
792 struct req_msg_field RMF_MDT_BODY =
793 DEFINE_MSGF("mdt_body", 0,
794 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
795 EXPORT_SYMBOL(RMF_MDT_BODY);
797 struct req_msg_field RMF_OBD_QUOTACTL =
798 DEFINE_MSGF("obd_quotactl", 0,
799 sizeof(struct obd_quotactl),
800 lustre_swab_obd_quotactl, NULL);
801 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
803 struct req_msg_field RMF_QUOTA_BODY =
804 DEFINE_MSGF("quota_body", 0,
805 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
806 EXPORT_SYMBOL(RMF_QUOTA_BODY);
808 struct req_msg_field RMF_MDT_EPOCH =
809 DEFINE_MSGF("mdt_ioepoch", 0,
810 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
811 EXPORT_SYMBOL(RMF_MDT_EPOCH);
813 struct req_msg_field RMF_PTLRPC_BODY =
814 DEFINE_MSGF("ptlrpc_body", 0,
815 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
816 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
818 struct req_msg_field RMF_OBD_STATFS =
819 DEFINE_MSGF("obd_statfs", 0,
820 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
821 EXPORT_SYMBOL(RMF_OBD_STATFS);
823 struct req_msg_field RMF_SETINFO_KEY =
824 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
825 EXPORT_SYMBOL(RMF_SETINFO_KEY);
827 struct req_msg_field RMF_NAME =
828 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
829 EXPORT_SYMBOL(RMF_NAME);
831 struct req_msg_field RMF_SYMTGT =
832 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
833 EXPORT_SYMBOL(RMF_SYMTGT);
835 struct req_msg_field RMF_TGTUUID =
836 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
838 EXPORT_SYMBOL(RMF_TGTUUID);
840 struct req_msg_field RMF_CLUUID =
841 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
843 EXPORT_SYMBOL(RMF_CLUUID);
845 struct req_msg_field RMF_STRING =
846 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
847 EXPORT_SYMBOL(RMF_STRING);
849 struct req_msg_field RMF_LLOGD_BODY =
850 DEFINE_MSGF("llogd_body", 0,
851 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
852 EXPORT_SYMBOL(RMF_LLOGD_BODY);
854 struct req_msg_field RMF_LLOG_LOG_HDR =
855 DEFINE_MSGF("llog_log_hdr", 0,
856 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
857 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
859 struct req_msg_field RMF_LLOGD_CONN_BODY =
860 DEFINE_MSGF("llogd_conn_body", 0,
861 sizeof(struct llogd_conn_body),
862 lustre_swab_llogd_conn_body, NULL);
863 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
866 * connection handle received in MDS_CONNECT request.
868 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
869 * that the client does not interpret at all.
871 struct req_msg_field RMF_CONN =
872 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
873 EXPORT_SYMBOL(RMF_CONN);
875 struct req_msg_field RMF_CONNECT_DATA =
877 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
878 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
879 sizeof(struct obd_connect_data),
881 /* For interoperability with 1.8 and 2.0 clients/servers.
882 * The RPC verification code allows larger RPC buffers, but not
883 * smaller buffers. Until we no longer need to keep compatibility
884 * with older servers/clients we can only check that the buffer
885 * size is at least as large as obd_connect_data_v1. That is not
886 * not in itself harmful, since the chance of just corrupting this
887 * field is low. See JIRA LU-16 for details. */
888 sizeof(struct obd_connect_data_v1),
890 lustre_swab_connect, NULL);
891 EXPORT_SYMBOL(RMF_CONNECT_DATA);
893 struct req_msg_field RMF_DLM_REQ =
894 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
895 sizeof(struct ldlm_request),
896 lustre_swab_ldlm_request, NULL);
897 EXPORT_SYMBOL(RMF_DLM_REQ);
899 struct req_msg_field RMF_DLM_REP =
900 DEFINE_MSGF("dlm_rep", 0,
901 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
902 EXPORT_SYMBOL(RMF_DLM_REP);
904 struct req_msg_field RMF_LDLM_INTENT =
905 DEFINE_MSGF("ldlm_intent", 0,
906 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
907 EXPORT_SYMBOL(RMF_LDLM_INTENT);
909 struct req_msg_field RMF_DLM_LVB =
910 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
911 EXPORT_SYMBOL(RMF_DLM_LVB);
913 struct req_msg_field RMF_DLM_GL_DESC =
914 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
915 lustre_swab_gl_desc, NULL);
916 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
918 struct req_msg_field RMF_MDT_MD =
919 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
920 EXPORT_SYMBOL(RMF_MDT_MD);
922 struct req_msg_field RMF_REC_REINT =
923 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
924 lustre_swab_mdt_rec_reint, NULL);
925 EXPORT_SYMBOL(RMF_REC_REINT);
927 /* FIXME: this length should be defined as a macro */
928 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
930 EXPORT_SYMBOL(RMF_EADATA);
932 struct req_msg_field RMF_ACL =
933 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
934 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
935 EXPORT_SYMBOL(RMF_ACL);
937 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
938 struct req_msg_field RMF_LOGCOOKIES =
939 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
940 sizeof(struct llog_cookie), NULL, NULL);
941 EXPORT_SYMBOL(RMF_LOGCOOKIES);
943 struct req_msg_field RMF_CAPA1 =
944 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
945 lustre_swab_lustre_capa, NULL);
946 EXPORT_SYMBOL(RMF_CAPA1);
948 struct req_msg_field RMF_CAPA2 =
949 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
950 lustre_swab_lustre_capa, NULL);
951 EXPORT_SYMBOL(RMF_CAPA2);
953 struct req_msg_field RMF_LAYOUT_INTENT =
954 DEFINE_MSGF("layout_intent", 0,
955 sizeof(struct layout_intent), lustre_swab_layout_intent,
957 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
962 struct req_msg_field RMF_OST_BODY =
963 DEFINE_MSGF("ost_body", 0,
964 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
965 EXPORT_SYMBOL(RMF_OST_BODY);
967 struct req_msg_field RMF_OBD_IOOBJ =
968 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
969 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
970 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
972 struct req_msg_field RMF_NIOBUF_REMOTE =
973 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
974 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
976 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
978 struct req_msg_field RMF_RCS =
979 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
980 lustre_swab_generic_32s, dump_rcs);
981 EXPORT_SYMBOL(RMF_RCS);
983 struct req_msg_field RMF_OBD_ID =
984 DEFINE_MSGF("obd_id", 0,
985 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
986 EXPORT_SYMBOL(RMF_OBD_ID);
988 struct req_msg_field RMF_FID =
989 DEFINE_MSGF("fid", 0,
990 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
991 EXPORT_SYMBOL(RMF_FID);
993 struct req_msg_field RMF_FIEMAP_KEY =
994 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
995 lustre_swab_fiemap, NULL);
996 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
998 struct req_msg_field RMF_FIEMAP_VAL =
999 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1000 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1002 struct req_msg_field RMF_IDX_INFO =
1003 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1004 lustre_swab_idx_info, NULL);
1005 EXPORT_SYMBOL(RMF_IDX_INFO);
1012 const char *rf_name;
1016 const struct req_msg_field **d;
1017 } rf_fields[RCL_NR];
1020 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1034 #define DEFINE_REQ_FMT0(name, client, server) \
1035 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1037 struct req_format RQF_OBD_PING =
1038 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1039 EXPORT_SYMBOL(RQF_OBD_PING);
1041 struct req_format RQF_OBD_SET_INFO =
1042 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1043 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1045 /* Read index file through the network */
1046 struct req_format RQF_OBD_IDX_READ =
1047 DEFINE_REQ_FMT0("OBD_IDX_READ",
1048 obd_idx_read_client, obd_idx_read_server);
1049 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1051 struct req_format RQF_SEC_CTX =
1052 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1053 EXPORT_SYMBOL(RQF_SEC_CTX);
1055 struct req_format RQF_MGS_TARGET_REG =
1056 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1057 mgs_target_info_only);
1058 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1060 struct req_format RQF_MGS_SET_INFO =
1061 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1063 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1065 struct req_format RQF_MGS_CONFIG_READ =
1066 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1067 mgs_config_read_server);
1068 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1070 struct req_format RQF_SEQ_QUERY =
1071 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1072 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1074 struct req_format RQF_FLD_QUERY =
1075 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1076 EXPORT_SYMBOL(RQF_FLD_QUERY);
1078 struct req_format RQF_LOG_CANCEL =
1079 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1080 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1082 struct req_format RQF_MDS_QUOTACHECK =
1083 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1084 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1086 struct req_format RQF_OST_QUOTACHECK =
1087 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1088 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1090 struct req_format RQF_MDS_QUOTACTL =
1091 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1092 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1094 struct req_format RQF_OST_QUOTACTL =
1095 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1096 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1098 struct req_format RQF_QC_CALLBACK =
1099 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1100 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1102 struct req_format RQF_QUOTA_DQACQ =
1103 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1104 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1106 struct req_format RQF_LDLM_INTENT_QUOTA =
1107 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1108 ldlm_intent_quota_client,
1109 ldlm_intent_quota_server);
1110 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1112 struct req_format RQF_MDS_GETSTATUS =
1113 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1114 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1116 struct req_format RQF_MDS_STATFS =
1117 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1118 EXPORT_SYMBOL(RQF_MDS_STATFS);
1120 struct req_format RQF_MDS_SYNC =
1121 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1122 EXPORT_SYMBOL(RQF_MDS_SYNC);
1124 struct req_format RQF_MDS_GETATTR =
1125 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1126 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1128 struct req_format RQF_MDS_GETXATTR =
1129 DEFINE_REQ_FMT0("MDS_GETXATTR",
1130 mds_getxattr_client, mds_getxattr_server);
1131 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1133 struct req_format RQF_MDS_GETATTR_NAME =
1134 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1135 mds_getattr_name_client, mds_getattr_server);
1136 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1138 struct req_format RQF_MDS_REINT =
1139 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1140 EXPORT_SYMBOL(RQF_MDS_REINT);
1142 struct req_format RQF_MDS_REINT_CREATE =
1143 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1144 mds_reint_create_client, mdt_body_capa);
1145 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1147 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1148 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1149 mds_reint_create_rmt_acl_client, mdt_body_capa);
1150 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1152 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1153 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1154 mds_reint_create_slave_client, mdt_body_capa);
1155 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1157 struct req_format RQF_MDS_REINT_CREATE_SYM =
1158 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1159 mds_reint_create_sym_client, mdt_body_capa);
1160 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1162 struct req_format RQF_MDS_REINT_OPEN =
1163 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1164 mds_reint_open_client, mds_reint_open_server);
1165 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1167 struct req_format RQF_MDS_REINT_UNLINK =
1168 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1169 mds_last_unlink_server);
1170 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1172 struct req_format RQF_MDS_REINT_LINK =
1173 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1174 mds_reint_link_client, mdt_body_only);
1175 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1177 struct req_format RQF_MDS_REINT_RENAME =
1178 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1179 mds_last_unlink_server);
1180 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1182 struct req_format RQF_MDS_REINT_SETATTR =
1183 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1184 mds_reint_setattr_client, mds_setattr_server);
1185 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1187 struct req_format RQF_MDS_REINT_SETXATTR =
1188 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1189 mds_reint_setxattr_client, mdt_body_only);
1190 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1192 struct req_format RQF_MDS_CONNECT =
1193 DEFINE_REQ_FMT0("MDS_CONNECT",
1194 obd_connect_client, obd_connect_server);
1195 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1197 struct req_format RQF_MDS_DISCONNECT =
1198 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1199 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1201 struct req_format RQF_MDS_GET_INFO =
1202 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1203 mds_getinfo_server);
1204 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1206 struct req_format RQF_LDLM_ENQUEUE =
1207 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1208 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1209 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1211 struct req_format RQF_LDLM_ENQUEUE_LVB =
1212 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1213 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1214 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1216 struct req_format RQF_LDLM_CONVERT =
1217 DEFINE_REQ_FMT0("LDLM_CONVERT",
1218 ldlm_enqueue_client, ldlm_enqueue_server);
1219 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1221 struct req_format RQF_LDLM_CANCEL =
1222 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1223 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1225 struct req_format RQF_LDLM_CALLBACK =
1226 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1227 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1229 struct req_format RQF_LDLM_CP_CALLBACK =
1230 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1231 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1233 struct req_format RQF_LDLM_BL_CALLBACK =
1234 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1235 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1237 struct req_format RQF_LDLM_GL_CALLBACK =
1238 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1239 ldlm_gl_callback_server);
1240 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1242 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1243 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1244 ldlm_gl_callback_server);
1245 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1247 struct req_format RQF_LDLM_INTENT_BASIC =
1248 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1249 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1250 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1252 struct req_format RQF_LDLM_INTENT =
1253 DEFINE_REQ_FMT0("LDLM_INTENT",
1254 ldlm_intent_client, ldlm_intent_server);
1255 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1257 struct req_format RQF_LDLM_INTENT_LAYOUT =
1258 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1259 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1260 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1262 struct req_format RQF_LDLM_INTENT_GETATTR =
1263 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1264 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1265 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1267 struct req_format RQF_LDLM_INTENT_OPEN =
1268 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1269 ldlm_intent_open_client, ldlm_intent_open_server);
1270 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1272 struct req_format RQF_LDLM_INTENT_CREATE =
1273 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1274 ldlm_intent_create_client, ldlm_intent_getattr_server);
1275 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1277 struct req_format RQF_LDLM_INTENT_UNLINK =
1278 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1279 ldlm_intent_unlink_client, ldlm_intent_server);
1280 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1282 struct req_format RQF_MDS_CLOSE =
1283 DEFINE_REQ_FMT0("MDS_CLOSE",
1284 mdt_close_client, mds_last_unlink_server);
1285 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1287 struct req_format RQF_MDS_PIN =
1288 DEFINE_REQ_FMT0("MDS_PIN",
1289 mdt_body_capa, mdt_body_only);
1290 EXPORT_SYMBOL(RQF_MDS_PIN);
1292 struct req_format RQF_MDS_UNPIN =
1293 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1294 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1296 struct req_format RQF_MDS_DONE_WRITING =
1297 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1298 mdt_close_client, mdt_body_only);
1299 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1301 struct req_format RQF_MDS_READPAGE =
1302 DEFINE_REQ_FMT0("MDS_READPAGE",
1303 mdt_body_capa, mdt_body_only);
1304 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1306 /* This is for split */
1307 struct req_format RQF_MDS_WRITEPAGE =
1308 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1309 mdt_body_capa, mdt_body_only);
1310 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1312 struct req_format RQF_MDS_IS_SUBDIR =
1313 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1314 mdt_body_only, mdt_body_only);
1315 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1317 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1318 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1319 llog_origin_handle_create_client, llogd_body_only);
1320 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1322 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1323 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1324 llogd_body_only, llogd_body_only);
1325 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1327 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1328 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1329 llogd_body_only, llog_origin_handle_next_block_server);
1330 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1332 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1333 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1334 llogd_body_only, llog_origin_handle_next_block_server);
1335 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1337 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1338 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1339 llogd_body_only, llog_log_hdr_only);
1340 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1342 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1343 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1344 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1346 struct req_format RQF_OST_CONNECT =
1347 DEFINE_REQ_FMT0("OST_CONNECT",
1348 obd_connect_client, obd_connect_server);
1349 EXPORT_SYMBOL(RQF_OST_CONNECT);
1351 struct req_format RQF_OST_DISCONNECT =
1352 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1353 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1355 struct req_format RQF_OST_GETATTR =
1356 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1357 EXPORT_SYMBOL(RQF_OST_GETATTR);
1359 struct req_format RQF_OST_SETATTR =
1360 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1361 EXPORT_SYMBOL(RQF_OST_SETATTR);
1363 struct req_format RQF_OST_CREATE =
1364 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1365 EXPORT_SYMBOL(RQF_OST_CREATE);
1367 struct req_format RQF_OST_PUNCH =
1368 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1369 EXPORT_SYMBOL(RQF_OST_PUNCH);
1371 struct req_format RQF_OST_SYNC =
1372 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1373 EXPORT_SYMBOL(RQF_OST_SYNC);
1375 struct req_format RQF_OST_DESTROY =
1376 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1377 EXPORT_SYMBOL(RQF_OST_DESTROY);
1379 struct req_format RQF_OST_BRW_READ =
1380 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1381 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1383 struct req_format RQF_OST_BRW_WRITE =
1384 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1385 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1387 struct req_format RQF_OST_STATFS =
1388 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1389 EXPORT_SYMBOL(RQF_OST_STATFS);
1391 struct req_format RQF_OST_SET_GRANT_INFO =
1392 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1394 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1396 struct req_format RQF_OST_GET_INFO_GENERIC =
1397 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1398 ost_get_info_generic_server);
1399 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1401 struct req_format RQF_OST_GET_INFO_LAST_ID =
1402 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1403 ost_get_last_id_server);
1404 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1406 struct req_format RQF_OST_GET_INFO_LAST_FID =
1407 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1408 ost_get_last_fid_server);
1409 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1411 struct req_format RQF_OST_SET_INFO_LAST_FID =
1412 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1414 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1416 struct req_format RQF_OST_GET_INFO_FIEMAP =
1417 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1418 ost_get_fiemap_server);
1419 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1421 #if !defined(__REQ_LAYOUT_USER__)
1423 /* Convenience macro */
1424 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1427 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1428 * field of RQFs and the \a rmf_offset field of RMFs.
1430 int req_layout_init(void)
1435 struct req_format *rf = NULL;
1437 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1438 rf = req_formats[i];
1440 for (j = 0; j < RCL_NR; ++j) {
1441 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1442 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1443 struct req_msg_field *field;
1445 field = (typeof(field))rf->rf_fields[j].d[k];
1446 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1447 || field->rmf_size > 0);
1448 LASSERT(field->rmf_offset[i][j] == 0);
1450 * k + 1 to detect unused format/field
1453 field->rmf_offset[i][j] = k + 1;
1459 EXPORT_SYMBOL(req_layout_init);
1461 void req_layout_fini(void)
1464 EXPORT_SYMBOL(req_layout_fini);
1467 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1469 * Actual/expected field sizes are set elsewhere in functions in this file:
1470 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1471 * req_capsule_msg_size(). The \a rc_area information is used by.
1472 * ptlrpc_request_set_replen().
1474 void req_capsule_init_area(struct req_capsule *pill)
1478 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1479 pill->rc_area[RCL_CLIENT][i] = -1;
1480 pill->rc_area[RCL_SERVER][i] = -1;
1483 EXPORT_SYMBOL(req_capsule_init_area);
1486 * Initialize a pill.
1488 * The \a location indicates whether the caller is executing on the client side
1489 * (RCL_CLIENT) or server side (RCL_SERVER)..
1491 void req_capsule_init(struct req_capsule *pill,
1492 struct ptlrpc_request *req,
1493 enum req_location location)
1495 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1498 * Today all capsules are embedded in ptlrpc_request structs,
1499 * but just in case that ever isn't the case, we don't reach
1500 * into req unless req != NULL and pill is the one embedded in
1503 * The req->rq_pill_init flag makes it safe to initialize a pill
1504 * twice, which might happen in the OST paths as a result of the
1505 * high-priority RPC queue getting peeked at before ost_handle()
1506 * handles an OST RPC.
1508 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1511 memset(pill, 0, sizeof *pill);
1513 pill->rc_loc = location;
1514 req_capsule_init_area(pill);
1516 if (req != NULL && pill == &req->rq_pill)
1517 req->rq_pill_init = 1;
1519 EXPORT_SYMBOL(req_capsule_init);
1521 void req_capsule_fini(struct req_capsule *pill)
1524 EXPORT_SYMBOL(req_capsule_fini);
1526 static int __req_format_is_sane(const struct req_format *fmt)
1529 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1530 req_formats[fmt->rf_idx] == fmt;
1533 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1534 enum req_location loc)
1536 struct ptlrpc_request *req;
1539 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1543 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1544 * (see req_capsule_extend()).
1546 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1548 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1549 LASSERT(__req_format_is_sane(fmt));
1553 EXPORT_SYMBOL(req_capsule_set);
1556 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1559 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1560 * variable-sized fields. The field sizes come from the declared \a rmf_size
1561 * field of a \a pill's \a rc_fmt's RMF's.
1563 int req_capsule_filled_sizes(struct req_capsule *pill,
1564 enum req_location loc)
1566 const struct req_format *fmt = pill->rc_fmt;
1569 LASSERT(fmt != NULL);
1571 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1572 if (pill->rc_area[loc][i] == -1) {
1573 pill->rc_area[loc][i] =
1574 fmt->rf_fields[loc].d[i]->rmf_size;
1575 if (pill->rc_area[loc][i] == -1) {
1577 * Skip the following fields.
1579 * If this LASSERT() trips then you're missing a
1580 * call to req_capsule_set_size().
1582 LASSERT(loc != RCL_SERVER);
1589 EXPORT_SYMBOL(req_capsule_filled_sizes);
1592 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1594 * This function uses the \a pill's \a rc_area as filled in by
1595 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1598 int req_capsule_server_pack(struct req_capsule *pill)
1600 const struct req_format *fmt;
1604 LASSERT(pill->rc_loc == RCL_SERVER);
1606 LASSERT(fmt != NULL);
1608 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1609 rc = lustre_pack_reply(pill->rc_req, count,
1610 pill->rc_area[RCL_SERVER], NULL);
1612 DEBUG_REQ(D_ERROR, pill->rc_req,
1613 "Cannot pack %d fields in format `%s': ",
1614 count, fmt->rf_name);
1618 EXPORT_SYMBOL(req_capsule_server_pack);
1621 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1622 * corresponding to the given RMF (\a field).
1624 static int __req_capsule_offset(const struct req_capsule *pill,
1625 const struct req_msg_field *field,
1626 enum req_location loc)
1630 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1631 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1632 pill->rc_fmt->rf_name,
1633 field->rmf_name, offset, loc);
1636 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1641 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1646 swabber_dumper_helper(struct req_capsule *pill,
1647 const struct req_msg_field *field,
1648 enum req_location loc,
1650 void *value, int len, int dump, void (*swabber)( void *))
1656 int inout = loc == RCL_CLIENT;
1658 swabber = swabber ?: field->rmf_swabber;
1660 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1661 swabber != NULL && value != NULL)
1666 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1667 if (dump && field->rmf_dumper) {
1668 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1669 do_swab ? "unswabbed " : "", field->rmf_name);
1670 field->rmf_dumper(value);
1675 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1677 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1678 "follows\n", field->rmf_name);
1679 field->rmf_dumper(value);
1686 * We're swabbing an array; swabber() swabs a single array element, so
1687 * swab every element.
1689 LASSERT((len % field->rmf_size) == 0);
1690 for (p = value, i = 0, n = len / field->rmf_size;
1692 i++, p += field->rmf_size) {
1693 if (dump && field->rmf_dumper) {
1694 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1695 "element %d follows\n",
1696 do_swab ? "unswabbed " : "", field->rmf_name, i);
1697 field->rmf_dumper(p);
1702 if (dump && field->rmf_dumper) {
1703 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1704 "element %d follows\n", field->rmf_name, i);
1705 field->rmf_dumper(value);
1709 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1713 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1714 * corresponding to the given RMF (\a field).
1716 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1717 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1718 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1719 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1720 * element of the array swabbed.
1722 static void *__req_capsule_get(struct req_capsule *pill,
1723 const struct req_msg_field *field,
1724 enum req_location loc,
1725 void (*swabber)( void *),
1728 const struct req_format *fmt;
1729 struct lustre_msg *msg;
1734 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1736 static const char *rcl_names[RCL_NR] = {
1737 [RCL_CLIENT] = "client",
1738 [RCL_SERVER] = "server"
1741 LASSERT(pill != NULL);
1742 LASSERT(pill != LP_POISON);
1744 LASSERT(fmt != NULL);
1745 LASSERT(fmt != LP_POISON);
1746 LASSERT(__req_format_is_sane(fmt));
1748 offset = __req_capsule_offset(pill, field, loc);
1750 msg = __req_msg(pill, loc);
1751 LASSERT(msg != NULL);
1753 getter = (field->rmf_flags & RMF_F_STRING) ?
1754 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1756 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1758 * We've already asserted that field->rmf_size > 0 in
1759 * req_layout_init().
1761 len = lustre_msg_buflen(msg, offset);
1762 if ((len % field->rmf_size) != 0) {
1763 CERROR("%s: array field size mismatch "
1764 "%d modulo %d != 0 (%d)\n",
1765 field->rmf_name, len, field->rmf_size, loc);
1768 } else if (pill->rc_area[loc][offset] != -1) {
1769 len = pill->rc_area[loc][offset];
1771 len = max(field->rmf_size, 0);
1773 value = getter(msg, offset, len);
1775 if (value == NULL) {
1776 DEBUG_REQ(D_ERROR, pill->rc_req,
1777 "Wrong buffer for field `%s' (%d of %d) "
1778 "in format `%s': %d vs. %d (%s)\n",
1779 field->rmf_name, offset, lustre_msg_bufcount(msg),
1780 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1783 swabber_dumper_helper(pill, field, loc, offset, value, len,
1791 * Dump a request and/or reply
1793 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
1795 const struct req_format *fmt;
1796 const struct req_msg_field *field;
1802 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
1803 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1804 field = FMT_FIELD(fmt, loc, i);
1805 if (field->rmf_dumper == NULL) {
1807 * FIXME Add a default hex dumper for fields that don't
1808 * have a specific dumper
1810 len = req_capsule_get_size(pill, field, loc);
1811 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
1812 "field size is %d\n", field->rmf_name, len);
1814 /* It's the dumping side-effect that we're interested in */
1815 (void) __req_capsule_get(pill, field, loc, NULL, 1);
1818 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
1824 void req_capsule_client_dump(struct req_capsule *pill)
1826 __req_capsule_dump(pill, RCL_CLIENT);
1828 EXPORT_SYMBOL(req_capsule_client_dump);
1833 void req_capsule_server_dump(struct req_capsule *pill)
1835 __req_capsule_dump(pill, RCL_SERVER);
1837 EXPORT_SYMBOL(req_capsule_server_dump);
1840 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1841 * buffer corresponding to the given RMF (\a field) of a \a pill.
1843 void *req_capsule_client_get(struct req_capsule *pill,
1844 const struct req_msg_field *field)
1846 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1848 EXPORT_SYMBOL(req_capsule_client_get);
1851 * Same as req_capsule_client_get(), but with a \a swabber argument.
1853 * Currently unused; will be removed when req_capsule_server_swab_get() is
1856 void *req_capsule_client_swab_get(struct req_capsule *pill,
1857 const struct req_msg_field *field,
1860 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1862 EXPORT_SYMBOL(req_capsule_client_swab_get);
1865 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
1867 * First the \a pill's request \a field's size is set (\a rc_area) using
1868 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1871 void *req_capsule_client_sized_get(struct req_capsule *pill,
1872 const struct req_msg_field *field,
1875 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1876 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1878 EXPORT_SYMBOL(req_capsule_client_sized_get);
1881 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
1882 * buffer corresponding to the given RMF (\a field) of a \a pill.
1884 void *req_capsule_server_get(struct req_capsule *pill,
1885 const struct req_msg_field *field)
1887 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1889 EXPORT_SYMBOL(req_capsule_server_get);
1892 * Same as req_capsule_server_get(), but with a \a swabber argument.
1894 * Ideally all swabbing should be done pursuant to RMF definitions, with no
1895 * swabbing done outside this capsule abstraction.
1897 void *req_capsule_server_swab_get(struct req_capsule *pill,
1898 const struct req_msg_field *field,
1901 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1903 EXPORT_SYMBOL(req_capsule_server_swab_get);
1906 * Utility that combines req_capsule_set_size() and req_capsule_server_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_server_sized_get(struct req_capsule *pill,
1913 const struct req_msg_field *field,
1916 req_capsule_set_size(pill, field, RCL_SERVER, len);
1917 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1919 EXPORT_SYMBOL(req_capsule_server_sized_get);
1921 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
1922 const struct req_msg_field *field,
1923 int len, void *swabber)
1925 req_capsule_set_size(pill, field, RCL_SERVER, len);
1926 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1928 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
1931 * Returns the buffer of a \a pill corresponding to the given \a field from the
1932 * request (if the caller is executing on the server-side) or reply (if the
1933 * caller is executing on the client-side).
1935 * This function convienient for use is code that could be executed on the
1936 * client and server alike.
1938 const void *req_capsule_other_get(struct req_capsule *pill,
1939 const struct req_msg_field *field)
1941 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
1943 EXPORT_SYMBOL(req_capsule_other_get);
1946 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
1947 * field of the given \a pill.
1949 * This function must be used when constructing variable sized fields of a
1952 void req_capsule_set_size(struct req_capsule *pill,
1953 const struct req_msg_field *field,
1954 enum req_location loc, int size)
1956 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1958 if ((size != field->rmf_size) &&
1959 (field->rmf_size != -1) &&
1960 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
1962 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
1963 (size % field->rmf_size != 0)) {
1964 CERROR("%s: array field size mismatch "
1965 "%d %% %d != 0 (%d)\n",
1966 field->rmf_name, size, field->rmf_size, loc);
1968 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
1969 size < field->rmf_size) {
1970 CERROR("%s: field size mismatch %d != %d (%d)\n",
1971 field->rmf_name, size, field->rmf_size, loc);
1976 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1978 EXPORT_SYMBOL(req_capsule_set_size);
1981 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
1982 * for the given \a pill's given \a field.
1984 * NB: this function doesn't correspond with req_capsule_set_size(), which
1985 * actually sets the size in pill.rc_area[loc][offset], but this function
1986 * returns the message buflen[offset], maybe we should use another name.
1988 int req_capsule_get_size(const struct req_capsule *pill,
1989 const struct req_msg_field *field,
1990 enum req_location loc)
1992 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1994 return lustre_msg_buflen(__req_msg(pill, loc),
1995 __req_capsule_offset(pill, field, loc));
1997 EXPORT_SYMBOL(req_capsule_get_size);
2000 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2001 * given \a pill's request or reply (\a loc) given the field size recorded in
2002 * the \a pill's rc_area.
2004 * See also req_capsule_set_size().
2006 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2008 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2009 pill->rc_fmt->rf_fields[loc].nr,
2010 pill->rc_area[loc]);
2014 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2015 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2016 * PTLRPC request or reply given only an RQF (\a fmt).
2018 * This function should not be used for formats which contain variable size
2021 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2022 enum req_location loc)
2027 * This function should probably LASSERT() that fmt has no fields with
2028 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2029 * elements in the array there will ultimately be, but then, we could
2030 * assume that there will be at least one element, and that's just what
2033 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2037 for (; i < fmt->rf_fields[loc].nr; ++i)
2038 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2039 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2045 * Changes the format of an RPC.
2047 * The pill must already have been initialized, which means that it already has
2048 * a request format. The new format \a fmt must be an extension of the pill's
2049 * old format. Specifically: the new format must have as many request and reply
2050 * fields as the old one, and all fields shared by the old and new format must
2051 * be at least as large in the new format.
2053 * The new format's fields may be of different "type" than the old format, but
2054 * only for fields that are "opaque" blobs: fields which have a) have no
2055 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2056 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2057 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2058 * according to the key field. When the value, according to the key, contains a
2059 * structure (or array thereof) to be swabbed, the format should be changed to
2060 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2063 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2068 const struct req_format *old;
2070 LASSERT(pill->rc_fmt != NULL);
2071 LASSERT(__req_format_is_sane(fmt));
2075 * Sanity checking...
2077 for (i = 0; i < RCL_NR; ++i) {
2078 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2079 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2080 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2082 /* "opaque" fields can be transmogrified */
2083 if (ofield->rmf_swabber == NULL &&
2084 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2085 (ofield->rmf_size == -1 ||
2086 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2088 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2091 * Last field in old format can be shorter than in new.
2093 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2094 FMT_FIELD(old, i, j)->rmf_size);
2099 EXPORT_SYMBOL(req_capsule_extend);
2102 * This function returns a non-zero value if the given \a field is present in
2103 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2106 int req_capsule_has_field(const struct req_capsule *pill,
2107 const struct req_msg_field *field,
2108 enum req_location loc)
2110 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2112 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2114 EXPORT_SYMBOL(req_capsule_has_field);
2117 * Returns a non-zero value if the given \a field is present in the given \a
2118 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2120 int req_capsule_field_present(const struct req_capsule *pill,
2121 const struct req_msg_field *field,
2122 enum req_location loc)
2126 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2127 LASSERT(req_capsule_has_field(pill, field, loc));
2129 offset = __req_capsule_offset(pill, field, loc);
2130 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2132 EXPORT_SYMBOL(req_capsule_field_present);
2135 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2136 * request or reply (\a loc).
2138 * This is not the opposite of req_capsule_extend().
2140 void req_capsule_shrink(struct req_capsule *pill,
2141 const struct req_msg_field *field,
2142 unsigned int newlen,
2143 enum req_location loc)
2145 const struct req_format *fmt;
2146 struct lustre_msg *msg;
2151 LASSERT(fmt != NULL);
2152 LASSERT(__req_format_is_sane(fmt));
2153 LASSERT(req_capsule_has_field(pill, field, loc));
2154 LASSERT(req_capsule_field_present(pill, field, loc));
2156 offset = __req_capsule_offset(pill, field, loc);
2158 msg = __req_msg(pill, loc);
2159 len = lustre_msg_buflen(msg, offset);
2160 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2161 fmt->rf_name, field->rmf_name, len, newlen);
2163 if (loc == RCL_CLIENT)
2164 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2167 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2170 EXPORT_SYMBOL(req_capsule_shrink);
2172 int req_capsule_server_grow(struct req_capsule *pill,
2173 const struct req_msg_field *field,
2174 unsigned int newlen)
2176 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2178 int offset, len, rc;
2180 LASSERT(pill->rc_fmt != NULL);
2181 LASSERT(__req_format_is_sane(pill->rc_fmt));
2182 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2183 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2185 len = req_capsule_get_size(pill, field, RCL_SERVER);
2186 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2187 if (pill->rc_req->rq_repbuf_len >=
2188 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2189 CERROR("Inplace repack might be done\n");
2191 pill->rc_req->rq_reply_state = NULL;
2192 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2193 rc = req_capsule_server_pack(pill);
2195 /* put old rs back, the caller will decide what to do */
2196 pill->rc_req->rq_reply_state = rs;
2199 nrs = pill->rc_req->rq_reply_state;
2200 /* Now we need only buffers, copy first chunk */
2201 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2202 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2203 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2204 memcpy(to, from, len);
2205 /* check if we have tail and copy it too */
2206 if (rs->rs_msg->lm_bufcount > offset + 1) {
2207 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2208 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2209 offset = rs->rs_msg->lm_bufcount - 1;
2210 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2211 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2212 memcpy(to, from, len);
2214 /* drop old reply if everything is fine */
2215 if (rs->rs_difficult) {
2219 nrs->rs_difficult = 1;
2220 nrs->rs_no_ack = rs->rs_no_ack;
2221 for (i = 0; i < rs->rs_nlocks; i++) {
2222 nrs->rs_locks[i] = rs->rs_locks[i];
2223 nrs->rs_modes[i] = rs->rs_modes[i];
2227 rs->rs_difficult = 0;
2230 ptlrpc_rs_decref(rs);
2233 EXPORT_SYMBOL(req_capsule_server_grow);
2234 /* __REQ_LAYOUT_USER__ */