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, Whamcloud, Inc.
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[] = {
124 static const struct req_msg_field *quota_adjust_qunit_only[] = {
126 &RMF_QUOTA_ADJUST_QUNIT
129 static const struct req_msg_field *qunit_data_only[] = {
134 static const struct req_msg_field *quota_body_only[] = {
139 static const struct req_msg_field *ldlm_intent_quota_client[] = {
146 static const struct req_msg_field *ldlm_intent_quota_server[] = {
153 static const struct req_msg_field *mdt_close_client[] = {
160 static const struct req_msg_field *obd_statfs_server[] = {
165 static const struct req_msg_field *seq_query_client[] = {
171 static const struct req_msg_field *seq_query_server[] = {
176 static const struct req_msg_field *fld_query_client[] = {
182 static const struct req_msg_field *fld_query_server[] = {
187 static const struct req_msg_field *mds_getattr_name_client[] = {
194 static const struct req_msg_field *mds_reint_client[] = {
199 static const struct req_msg_field *mds_reint_create_client[] = {
206 static const struct req_msg_field *mds_reint_create_slave_client[] = {
215 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
224 static const struct req_msg_field *mds_reint_create_sym_client[] = {
233 static const struct req_msg_field *mds_reint_open_client[] = {
242 static const struct req_msg_field *mds_reint_open_server[] = {
251 static const struct req_msg_field *mds_reint_unlink_client[] = {
259 static const struct req_msg_field *mds_reint_link_client[] = {
268 static const struct req_msg_field *mds_reint_rename_client[] = {
278 static const struct req_msg_field *mds_last_unlink_server[] = {
287 static const struct req_msg_field *mds_reint_setattr_client[] = {
297 static const struct req_msg_field *mds_reint_setxattr_client[] = {
305 static const struct req_msg_field *obd_connect_client[] = {
313 static const struct req_msg_field *obd_connect_server[] = {
318 static const struct req_msg_field *obd_set_info_client[] = {
324 static const struct req_msg_field *ost_grant_shrink_client[] = {
330 static const struct req_msg_field *mds_getinfo_client[] = {
336 static const struct req_msg_field *mds_getinfo_server[] = {
341 static const struct req_msg_field *ldlm_enqueue_client[] = {
346 static const struct req_msg_field *ldlm_enqueue_server[] = {
351 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
357 static const struct req_msg_field *ldlm_cp_callback_client[] = {
363 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
369 static const struct req_msg_field *ldlm_gl_callback_server[] = {
374 static const struct req_msg_field *ldlm_intent_basic_client[] = {
380 static const struct req_msg_field *ldlm_intent_client[] = {
387 static const struct req_msg_field *ldlm_intent_server[] = {
395 static const struct req_msg_field *ldlm_intent_open_server[] = {
405 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
409 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
414 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
423 static const struct req_msg_field *ldlm_intent_create_client[] = {
427 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
433 static const struct req_msg_field *ldlm_intent_open_client[] = {
437 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
444 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
448 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
453 static const struct req_msg_field *mds_getxattr_client[] = {
461 static const struct req_msg_field *mds_getxattr_server[] = {
467 static const struct req_msg_field *mds_getattr_server[] = {
476 static const struct req_msg_field *mds_setattr_server[] = {
485 static const struct req_msg_field *llog_origin_handle_create_client[] = {
491 static const struct req_msg_field *llogd_body_only[] = {
496 static const struct req_msg_field *llog_log_hdr_only[] = {
501 static const struct req_msg_field *llogd_conn_body_only[] = {
506 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
512 static const struct req_msg_field *obd_idx_read_client[] = {
517 static const struct req_msg_field *obd_idx_read_server[] = {
522 static const struct req_msg_field *ost_body_only[] = {
527 static const struct req_msg_field *ost_body_capa[] = {
533 static const struct req_msg_field *ost_destroy_client[] = {
541 static const struct req_msg_field *ost_brw_client[] = {
549 static const struct req_msg_field *ost_brw_read_server[] = {
554 static const struct req_msg_field *ost_brw_write_server[] = {
560 static const struct req_msg_field *ost_get_info_generic_server[] = {
565 static const struct req_msg_field *ost_get_info_generic_client[] = {
570 static const struct req_msg_field *ost_get_last_id_server[] = {
575 static const struct req_msg_field *ost_get_fiemap_client[] = {
581 static const struct req_msg_field *ost_get_fiemap_server[] = {
586 static struct req_format *req_formats[] = {
593 &RQF_MGS_CONFIG_READ,
602 &RQF_MDS_GETATTR_NAME,
611 &RQF_MDS_DONE_WRITING,
613 &RQF_MDS_REINT_CREATE,
614 &RQF_MDS_REINT_CREATE_RMT_ACL,
615 &RQF_MDS_REINT_CREATE_SLAVE,
616 &RQF_MDS_REINT_CREATE_SYM,
618 &RQF_MDS_REINT_UNLINK,
620 &RQF_MDS_REINT_RENAME,
621 &RQF_MDS_REINT_SETATTR,
622 &RQF_MDS_REINT_SETXATTR,
625 &RQF_MDS_QUOTA_DQACQ,
631 &RQF_OST_QUOTA_ADJUST_QUNIT,
641 &RQF_OST_SET_GRANT_INFO,
642 &RQF_OST_GET_INFO_GENERIC,
643 &RQF_OST_GET_INFO_LAST_ID,
644 &RQF_OST_GET_INFO_FIEMAP,
646 &RQF_LDLM_ENQUEUE_LVB,
650 &RQF_LDLM_CP_CALLBACK,
651 &RQF_LDLM_BL_CALLBACK,
652 &RQF_LDLM_GL_CALLBACK,
653 &RQF_LDLM_GL_DESC_CALLBACK,
655 &RQF_LDLM_INTENT_BASIC,
656 &RQF_LDLM_INTENT_GETATTR,
657 &RQF_LDLM_INTENT_OPEN,
658 &RQF_LDLM_INTENT_CREATE,
659 &RQF_LDLM_INTENT_UNLINK,
660 &RQF_LDLM_INTENT_QUOTA,
663 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
664 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
665 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
666 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
667 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
668 &RQF_LLOG_ORIGIN_CONNECT
671 struct req_msg_field {
672 const __u32 rmf_flags;
673 const char *rmf_name;
675 * Field length. (-1) means "variable length". If the
676 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
677 * but the actual size must be a whole multiple of \a rmf_size.
680 void (*rmf_swabber)(void *);
681 void (*rmf_dumper)(void *);
682 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
687 * The field is a string, must be NUL-terminated.
689 RMF_F_STRING = 1 << 0,
691 * The field's buffer size need not match the declared \a rmf_size.
693 RMF_F_NO_SIZE_CHECK = 1 << 1,
695 * The field's buffer size must be a whole multiple of the declared \a
696 * rmf_size and the \a rmf_swabber function must work on the declared \a
697 * rmf_size worth of bytes.
699 RMF_F_STRUCT_ARRAY = 1 << 2
707 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
708 .rmf_name = (name), \
709 .rmf_flags = (flags), \
710 .rmf_size = (size), \
711 .rmf_swabber = (void (*)(void*))(swabber), \
712 .rmf_dumper = (void (*)(void*))(dumper) \
715 struct req_msg_field RMF_GENERIC_DATA =
716 DEFINE_MSGF("generic_data", 0,
718 EXPORT_SYMBOL(RMF_GENERIC_DATA);
720 struct req_msg_field RMF_MGS_TARGET_INFO =
721 DEFINE_MSGF("mgs_target_info", 0,
722 sizeof(struct mgs_target_info),
723 lustre_swab_mgs_target_info, NULL);
724 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
726 struct req_msg_field RMF_MGS_SEND_PARAM =
727 DEFINE_MSGF("mgs_send_param", 0,
728 sizeof(struct mgs_send_param),
730 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
732 struct req_msg_field RMF_MGS_CONFIG_BODY =
733 DEFINE_MSGF("mgs_config_read request", 0,
734 sizeof(struct mgs_config_body),
735 lustre_swab_mgs_config_body, NULL);
736 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
738 struct req_msg_field RMF_MGS_CONFIG_RES =
739 DEFINE_MSGF("mgs_config_read reply ", 0,
740 sizeof(struct mgs_config_res),
741 lustre_swab_mgs_config_res, NULL);
742 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
744 struct req_msg_field RMF_U32 =
745 DEFINE_MSGF("generic u32", 0,
746 sizeof(__u32), lustre_swab_generic_32s, NULL);
747 EXPORT_SYMBOL(RMF_U32);
749 struct req_msg_field RMF_SETINFO_VAL =
750 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
751 EXPORT_SYMBOL(RMF_SETINFO_VAL);
753 struct req_msg_field RMF_GETINFO_KEY =
754 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
755 EXPORT_SYMBOL(RMF_GETINFO_KEY);
757 struct req_msg_field RMF_GETINFO_VALLEN =
758 DEFINE_MSGF("getinfo_vallen", 0,
759 sizeof(__u32), lustre_swab_generic_32s, NULL);
760 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
762 struct req_msg_field RMF_GETINFO_VAL =
763 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
764 EXPORT_SYMBOL(RMF_GETINFO_VAL);
766 struct req_msg_field RMF_SEQ_OPC =
767 DEFINE_MSGF("seq_query_opc", 0,
768 sizeof(__u32), lustre_swab_generic_32s, NULL);
769 EXPORT_SYMBOL(RMF_SEQ_OPC);
771 struct req_msg_field RMF_SEQ_RANGE =
772 DEFINE_MSGF("seq_query_range", 0,
773 sizeof(struct lu_seq_range),
774 lustre_swab_lu_seq_range, NULL);
775 EXPORT_SYMBOL(RMF_SEQ_RANGE);
777 struct req_msg_field RMF_FLD_OPC =
778 DEFINE_MSGF("fld_query_opc", 0,
779 sizeof(__u32), lustre_swab_generic_32s, NULL);
780 EXPORT_SYMBOL(RMF_FLD_OPC);
782 struct req_msg_field RMF_FLD_MDFLD =
783 DEFINE_MSGF("fld_query_mdfld", 0,
784 sizeof(struct lu_seq_range),
785 lustre_swab_lu_seq_range, NULL);
786 EXPORT_SYMBOL(RMF_FLD_MDFLD);
788 struct req_msg_field RMF_MDT_BODY =
789 DEFINE_MSGF("mdt_body", 0,
790 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
791 EXPORT_SYMBOL(RMF_MDT_BODY);
793 struct req_msg_field RMF_OBD_QUOTACTL =
794 DEFINE_MSGF("obd_quotactl", 0,
795 sizeof(struct obd_quotactl),
796 lustre_swab_obd_quotactl, NULL);
797 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
799 struct req_msg_field RMF_QUOTA_ADJUST_QUNIT =
800 DEFINE_MSGF("quota_adjust_qunit", 0,
801 sizeof(struct quota_adjust_qunit),
802 lustre_swab_quota_adjust_qunit, NULL);
803 EXPORT_SYMBOL(RMF_QUOTA_ADJUST_QUNIT);
805 struct req_msg_field RMF_QUNIT_DATA =
806 DEFINE_MSGF("qunit_data", 0,
807 sizeof(struct qunit_data), lustre_swab_qdata, NULL);
808 EXPORT_SYMBOL(RMF_QUNIT_DATA);
810 struct req_msg_field RMF_QUOTA_BODY =
811 DEFINE_MSGF("quota_body", 0,
812 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
813 EXPORT_SYMBOL(RMF_QUOTA_BODY);
815 struct req_msg_field RMF_MDT_EPOCH =
816 DEFINE_MSGF("mdt_ioepoch", 0,
817 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
818 EXPORT_SYMBOL(RMF_MDT_EPOCH);
820 struct req_msg_field RMF_PTLRPC_BODY =
821 DEFINE_MSGF("ptlrpc_body", 0,
822 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
823 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
825 struct req_msg_field RMF_OBD_STATFS =
826 DEFINE_MSGF("obd_statfs", 0,
827 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
828 EXPORT_SYMBOL(RMF_OBD_STATFS);
830 struct req_msg_field RMF_SETINFO_KEY =
831 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
832 EXPORT_SYMBOL(RMF_SETINFO_KEY);
834 struct req_msg_field RMF_NAME =
835 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
836 EXPORT_SYMBOL(RMF_NAME);
838 struct req_msg_field RMF_SYMTGT =
839 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
840 EXPORT_SYMBOL(RMF_SYMTGT);
842 struct req_msg_field RMF_TGTUUID =
843 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
845 EXPORT_SYMBOL(RMF_TGTUUID);
847 struct req_msg_field RMF_CLUUID =
848 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
850 EXPORT_SYMBOL(RMF_CLUUID);
852 struct req_msg_field RMF_STRING =
853 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
854 EXPORT_SYMBOL(RMF_STRING);
856 struct req_msg_field RMF_LLOGD_BODY =
857 DEFINE_MSGF("llogd_body", 0,
858 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
859 EXPORT_SYMBOL(RMF_LLOGD_BODY);
861 struct req_msg_field RMF_LLOG_LOG_HDR =
862 DEFINE_MSGF("llog_log_hdr", 0,
863 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
864 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
866 struct req_msg_field RMF_LLOGD_CONN_BODY =
867 DEFINE_MSGF("llogd_conn_body", 0,
868 sizeof(struct llogd_conn_body),
869 lustre_swab_llogd_conn_body, NULL);
870 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
873 * connection handle received in MDS_CONNECT request.
875 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
876 * that the client does not interpret at all.
878 struct req_msg_field RMF_CONN =
879 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
880 EXPORT_SYMBOL(RMF_CONN);
882 struct req_msg_field RMF_CONNECT_DATA =
884 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
885 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
886 sizeof(struct obd_connect_data),
888 /* For interoperability with 1.8 and 2.0 clients/servers.
889 * The RPC verification code allows larger RPC buffers, but not
890 * smaller buffers. Until we no longer need to keep compatibility
891 * with older servers/clients we can only check that the buffer
892 * size is at least as large as obd_connect_data_v1. That is not
893 * not in itself harmful, since the chance of just corrupting this
894 * field is low. See JIRA LU-16 for details. */
895 sizeof(struct obd_connect_data_v1),
897 lustre_swab_connect, NULL);
898 EXPORT_SYMBOL(RMF_CONNECT_DATA);
900 struct req_msg_field RMF_DLM_REQ =
901 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
902 sizeof(struct ldlm_request),
903 lustre_swab_ldlm_request, NULL);
904 EXPORT_SYMBOL(RMF_DLM_REQ);
906 struct req_msg_field RMF_DLM_REP =
907 DEFINE_MSGF("dlm_rep", 0,
908 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
909 EXPORT_SYMBOL(RMF_DLM_REP);
911 struct req_msg_field RMF_LDLM_INTENT =
912 DEFINE_MSGF("ldlm_intent", 0,
913 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
914 EXPORT_SYMBOL(RMF_LDLM_INTENT);
916 struct req_msg_field RMF_DLM_LVB =
917 DEFINE_MSGF("dlm_lvb", 0, sizeof(union ldlm_wire_lvb), lustre_swab_lvb,
919 EXPORT_SYMBOL(RMF_DLM_LVB);
921 struct req_msg_field RMF_DLM_GL_DESC =
922 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
923 lustre_swab_gl_desc, NULL);
924 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
926 struct req_msg_field RMF_MDT_MD =
927 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
928 EXPORT_SYMBOL(RMF_MDT_MD);
930 struct req_msg_field RMF_REC_REINT =
931 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
932 lustre_swab_mdt_rec_reint, NULL);
933 EXPORT_SYMBOL(RMF_REC_REINT);
935 /* FIXME: this length should be defined as a macro */
936 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
938 EXPORT_SYMBOL(RMF_EADATA);
940 struct req_msg_field RMF_ACL =
941 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
942 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
943 EXPORT_SYMBOL(RMF_ACL);
945 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
946 struct req_msg_field RMF_LOGCOOKIES =
947 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
948 sizeof(struct llog_cookie), NULL, NULL);
949 EXPORT_SYMBOL(RMF_LOGCOOKIES);
951 struct req_msg_field RMF_CAPA1 =
952 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
953 lustre_swab_lustre_capa, NULL);
954 EXPORT_SYMBOL(RMF_CAPA1);
956 struct req_msg_field RMF_CAPA2 =
957 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
958 lustre_swab_lustre_capa, NULL);
959 EXPORT_SYMBOL(RMF_CAPA2);
964 struct req_msg_field RMF_OST_BODY =
965 DEFINE_MSGF("ost_body", 0,
966 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
967 EXPORT_SYMBOL(RMF_OST_BODY);
969 struct req_msg_field RMF_OBD_IOOBJ =
970 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
971 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
972 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
974 struct req_msg_field RMF_NIOBUF_REMOTE =
975 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
976 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
978 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
980 struct req_msg_field RMF_RCS =
981 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
982 lustre_swab_generic_32s, dump_rcs);
983 EXPORT_SYMBOL(RMF_RCS);
985 struct req_msg_field RMF_OBD_ID =
986 DEFINE_MSGF("obd_id", 0,
987 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
988 EXPORT_SYMBOL(RMF_OBD_ID);
990 struct req_msg_field RMF_FIEMAP_KEY =
991 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
992 lustre_swab_fiemap, NULL);
993 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
995 struct req_msg_field RMF_FIEMAP_VAL =
996 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
997 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
999 struct req_msg_field RMF_IDX_INFO =
1000 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1001 lustre_swab_idx_info, NULL);
1002 EXPORT_SYMBOL(RMF_IDX_INFO);
1009 const char *rf_name;
1013 const struct req_msg_field **d;
1014 } rf_fields[RCL_NR];
1017 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1031 #define DEFINE_REQ_FMT0(name, client, server) \
1032 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1034 struct req_format RQF_OBD_PING =
1035 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1036 EXPORT_SYMBOL(RQF_OBD_PING);
1038 struct req_format RQF_OBD_SET_INFO =
1039 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1040 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1042 /* Read index file through the network */
1043 struct req_format RQF_OBD_IDX_READ =
1044 DEFINE_REQ_FMT0("OBD_IDX_READ",
1045 obd_idx_read_client, obd_idx_read_server);
1046 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1048 struct req_format RQF_SEC_CTX =
1049 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1050 EXPORT_SYMBOL(RQF_SEC_CTX);
1052 struct req_format RQF_MGS_TARGET_REG =
1053 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1054 mgs_target_info_only);
1055 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1057 struct req_format RQF_MGS_SET_INFO =
1058 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1060 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1062 struct req_format RQF_MGS_CONFIG_READ =
1063 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1064 mgs_config_read_server);
1065 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1067 struct req_format RQF_SEQ_QUERY =
1068 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1069 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1071 struct req_format RQF_FLD_QUERY =
1072 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1073 EXPORT_SYMBOL(RQF_FLD_QUERY);
1075 struct req_format RQF_LOG_CANCEL =
1076 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1077 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1079 struct req_format RQF_MDS_QUOTACHECK =
1080 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1081 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1083 struct req_format RQF_OST_QUOTACHECK =
1084 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1085 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1087 struct req_format RQF_MDS_QUOTACTL =
1088 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1089 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1091 struct req_format RQF_OST_QUOTACTL =
1092 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1093 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1095 struct req_format RQF_OST_QUOTA_ADJUST_QUNIT =
1096 DEFINE_REQ_FMT0("OST_QUOTA_ADJUST_QUNIT", quota_adjust_qunit_only,
1097 quota_adjust_qunit_only);
1098 EXPORT_SYMBOL(RQF_OST_QUOTA_ADJUST_QUNIT);
1100 struct req_format RQF_QC_CALLBACK =
1101 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1102 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1104 struct req_format RQF_MDS_QUOTA_DQACQ =
1105 DEFINE_REQ_FMT0("MDS_QUOTA_DQACQ", qunit_data_only, qunit_data_only);
1106 EXPORT_SYMBOL(RQF_MDS_QUOTA_DQACQ);
1108 struct req_format RQF_QUOTA_DQACQ =
1109 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1110 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1112 struct req_format RQF_LDLM_INTENT_QUOTA =
1113 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1114 ldlm_intent_quota_client,
1115 ldlm_intent_quota_server);
1116 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1118 struct req_format RQF_MDS_GETSTATUS =
1119 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1120 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1122 struct req_format RQF_MDS_STATFS =
1123 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1124 EXPORT_SYMBOL(RQF_MDS_STATFS);
1126 struct req_format RQF_MDS_SYNC =
1127 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1128 EXPORT_SYMBOL(RQF_MDS_SYNC);
1130 struct req_format RQF_MDS_GETATTR =
1131 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1132 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1134 struct req_format RQF_MDS_GETXATTR =
1135 DEFINE_REQ_FMT0("MDS_GETXATTR",
1136 mds_getxattr_client, mds_getxattr_server);
1137 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1139 struct req_format RQF_MDS_GETATTR_NAME =
1140 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1141 mds_getattr_name_client, mds_getattr_server);
1142 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1144 struct req_format RQF_MDS_REINT =
1145 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1146 EXPORT_SYMBOL(RQF_MDS_REINT);
1148 struct req_format RQF_MDS_REINT_CREATE =
1149 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1150 mds_reint_create_client, mdt_body_capa);
1151 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1153 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1154 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1155 mds_reint_create_rmt_acl_client, mdt_body_capa);
1156 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1158 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1159 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1160 mds_reint_create_slave_client, mdt_body_capa);
1161 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1163 struct req_format RQF_MDS_REINT_CREATE_SYM =
1164 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1165 mds_reint_create_sym_client, mdt_body_capa);
1166 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1168 struct req_format RQF_MDS_REINT_OPEN =
1169 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1170 mds_reint_open_client, mds_reint_open_server);
1171 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1173 struct req_format RQF_MDS_REINT_UNLINK =
1174 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1175 mds_last_unlink_server);
1176 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1178 struct req_format RQF_MDS_REINT_LINK =
1179 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1180 mds_reint_link_client, mdt_body_only);
1181 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1183 struct req_format RQF_MDS_REINT_RENAME =
1184 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1185 mds_last_unlink_server);
1186 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1188 struct req_format RQF_MDS_REINT_SETATTR =
1189 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1190 mds_reint_setattr_client, mds_setattr_server);
1191 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1193 struct req_format RQF_MDS_REINT_SETXATTR =
1194 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1195 mds_reint_setxattr_client, mdt_body_only);
1196 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1198 struct req_format RQF_MDS_CONNECT =
1199 DEFINE_REQ_FMT0("MDS_CONNECT",
1200 obd_connect_client, obd_connect_server);
1201 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1203 struct req_format RQF_MDS_DISCONNECT =
1204 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1205 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1207 struct req_format RQF_MDS_GET_INFO =
1208 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1209 mds_getinfo_server);
1210 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1212 struct req_format RQF_LDLM_ENQUEUE =
1213 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1214 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1215 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1217 struct req_format RQF_LDLM_ENQUEUE_LVB =
1218 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1219 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1220 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1222 struct req_format RQF_LDLM_CONVERT =
1223 DEFINE_REQ_FMT0("LDLM_CONVERT",
1224 ldlm_enqueue_client, ldlm_enqueue_server);
1225 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1227 struct req_format RQF_LDLM_CANCEL =
1228 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1229 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1231 struct req_format RQF_LDLM_CALLBACK =
1232 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1233 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1235 struct req_format RQF_LDLM_CP_CALLBACK =
1236 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1237 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1239 struct req_format RQF_LDLM_BL_CALLBACK =
1240 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1241 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1243 struct req_format RQF_LDLM_GL_CALLBACK =
1244 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1245 ldlm_gl_callback_server);
1246 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1248 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1249 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1250 ldlm_gl_callback_server);
1251 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1253 struct req_format RQF_LDLM_INTENT_BASIC =
1254 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1255 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1256 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1258 struct req_format RQF_LDLM_INTENT =
1259 DEFINE_REQ_FMT0("LDLM_INTENT",
1260 ldlm_intent_client, ldlm_intent_server);
1261 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1263 struct req_format RQF_LDLM_INTENT_GETATTR =
1264 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1265 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1266 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1268 struct req_format RQF_LDLM_INTENT_OPEN =
1269 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1270 ldlm_intent_open_client, ldlm_intent_open_server);
1271 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1273 struct req_format RQF_LDLM_INTENT_CREATE =
1274 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1275 ldlm_intent_create_client, ldlm_intent_getattr_server);
1276 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1278 struct req_format RQF_LDLM_INTENT_UNLINK =
1279 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1280 ldlm_intent_unlink_client, ldlm_intent_server);
1281 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1283 struct req_format RQF_MDS_CLOSE =
1284 DEFINE_REQ_FMT0("MDS_CLOSE",
1285 mdt_close_client, mds_last_unlink_server);
1286 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1288 struct req_format RQF_MDS_PIN =
1289 DEFINE_REQ_FMT0("MDS_PIN",
1290 mdt_body_capa, mdt_body_only);
1291 EXPORT_SYMBOL(RQF_MDS_PIN);
1293 struct req_format RQF_MDS_UNPIN =
1294 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1295 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1297 struct req_format RQF_MDS_DONE_WRITING =
1298 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1299 mdt_close_client, mdt_body_only);
1300 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1302 struct req_format RQF_MDS_READPAGE =
1303 DEFINE_REQ_FMT0("MDS_READPAGE",
1304 mdt_body_capa, mdt_body_only);
1305 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1307 /* This is for split */
1308 struct req_format RQF_MDS_WRITEPAGE =
1309 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1310 mdt_body_capa, mdt_body_only);
1311 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1313 struct req_format RQF_MDS_IS_SUBDIR =
1314 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1315 mdt_body_only, mdt_body_only);
1316 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1318 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1319 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1320 llog_origin_handle_create_client, llogd_body_only);
1321 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1323 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1324 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1325 llogd_body_only, llogd_body_only);
1326 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1328 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1329 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1330 llogd_body_only, llog_origin_handle_next_block_server);
1331 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1333 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1334 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1335 llogd_body_only, llog_origin_handle_next_block_server);
1336 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1338 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1339 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1340 llogd_body_only, llog_log_hdr_only);
1341 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1343 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1344 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1345 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1347 struct req_format RQF_OST_CONNECT =
1348 DEFINE_REQ_FMT0("OST_CONNECT",
1349 obd_connect_client, obd_connect_server);
1350 EXPORT_SYMBOL(RQF_OST_CONNECT);
1352 struct req_format RQF_OST_DISCONNECT =
1353 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1354 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1356 struct req_format RQF_OST_GETATTR =
1357 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1358 EXPORT_SYMBOL(RQF_OST_GETATTR);
1360 struct req_format RQF_OST_SETATTR =
1361 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1362 EXPORT_SYMBOL(RQF_OST_SETATTR);
1364 struct req_format RQF_OST_CREATE =
1365 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1366 EXPORT_SYMBOL(RQF_OST_CREATE);
1368 struct req_format RQF_OST_PUNCH =
1369 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1370 EXPORT_SYMBOL(RQF_OST_PUNCH);
1372 struct req_format RQF_OST_SYNC =
1373 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1374 EXPORT_SYMBOL(RQF_OST_SYNC);
1376 struct req_format RQF_OST_DESTROY =
1377 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1378 EXPORT_SYMBOL(RQF_OST_DESTROY);
1380 struct req_format RQF_OST_BRW_READ =
1381 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1382 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1384 struct req_format RQF_OST_BRW_WRITE =
1385 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1386 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1388 struct req_format RQF_OST_STATFS =
1389 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1390 EXPORT_SYMBOL(RQF_OST_STATFS);
1392 struct req_format RQF_OST_SET_GRANT_INFO =
1393 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1395 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1397 struct req_format RQF_OST_GET_INFO_GENERIC =
1398 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1399 ost_get_info_generic_server);
1400 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1402 struct req_format RQF_OST_GET_INFO_LAST_ID =
1403 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1404 ost_get_last_id_server);
1405 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1407 struct req_format RQF_OST_GET_INFO_FIEMAP =
1408 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1409 ost_get_fiemap_server);
1410 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1413 #if !defined(__REQ_LAYOUT_USER__)
1415 /* Convenience macro */
1416 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1419 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1420 * field of RQFs and the \a rmf_offset field of RMFs.
1422 int req_layout_init(void)
1427 struct req_format *rf = NULL;
1429 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1430 rf = req_formats[i];
1432 for (j = 0; j < RCL_NR; ++j) {
1433 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1434 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1435 struct req_msg_field *field;
1437 field = (typeof(field))rf->rf_fields[j].d[k];
1438 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1439 || field->rmf_size > 0);
1440 LASSERT(field->rmf_offset[i][j] == 0);
1442 * k + 1 to detect unused format/field
1445 field->rmf_offset[i][j] = k + 1;
1451 EXPORT_SYMBOL(req_layout_init);
1453 void req_layout_fini(void)
1456 EXPORT_SYMBOL(req_layout_fini);
1459 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1461 * Actual/expected field sizes are set elsewhere in functions in this file:
1462 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1463 * req_capsule_msg_size(). The \a rc_area information is used by.
1464 * ptlrpc_request_set_replen().
1466 void req_capsule_init_area(struct req_capsule *pill)
1470 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1471 pill->rc_area[RCL_CLIENT][i] = -1;
1472 pill->rc_area[RCL_SERVER][i] = -1;
1475 EXPORT_SYMBOL(req_capsule_init_area);
1478 * Initialize a pill.
1480 * The \a location indicates whether the caller is executing on the client side
1481 * (RCL_CLIENT) or server side (RCL_SERVER)..
1483 void req_capsule_init(struct req_capsule *pill,
1484 struct ptlrpc_request *req,
1485 enum req_location location)
1487 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1490 * Today all capsules are embedded in ptlrpc_request structs,
1491 * but just in case that ever isn't the case, we don't reach
1492 * into req unless req != NULL and pill is the one embedded in
1495 * The req->rq_pill_init flag makes it safe to initialize a pill
1496 * twice, which might happen in the OST paths as a result of the
1497 * high-priority RPC queue getting peeked at before ost_handle()
1498 * handles an OST RPC.
1500 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1503 memset(pill, 0, sizeof *pill);
1505 pill->rc_loc = location;
1506 req_capsule_init_area(pill);
1508 if (req != NULL && pill == &req->rq_pill)
1509 req->rq_pill_init = 1;
1511 EXPORT_SYMBOL(req_capsule_init);
1513 void req_capsule_fini(struct req_capsule *pill)
1516 EXPORT_SYMBOL(req_capsule_fini);
1518 static int __req_format_is_sane(const struct req_format *fmt)
1521 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1522 req_formats[fmt->rf_idx] == fmt;
1525 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1526 enum req_location loc)
1528 struct ptlrpc_request *req;
1531 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1535 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1536 * (see req_capsule_extend()).
1538 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1540 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1541 LASSERT(__req_format_is_sane(fmt));
1545 EXPORT_SYMBOL(req_capsule_set);
1548 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1551 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1552 * variable-sized fields. The field sizes come from the declared \a rmf_size
1553 * field of a \a pill's \a rc_fmt's RMF's.
1555 int req_capsule_filled_sizes(struct req_capsule *pill,
1556 enum req_location loc)
1558 const struct req_format *fmt = pill->rc_fmt;
1561 LASSERT(fmt != NULL);
1563 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1564 if (pill->rc_area[loc][i] == -1) {
1565 pill->rc_area[loc][i] =
1566 fmt->rf_fields[loc].d[i]->rmf_size;
1567 if (pill->rc_area[loc][i] == -1) {
1569 * Skip the following fields.
1571 * If this LASSERT() trips then you're missing a
1572 * call to req_capsule_set_size().
1574 LASSERT(loc != RCL_SERVER);
1581 EXPORT_SYMBOL(req_capsule_filled_sizes);
1584 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1586 * This function uses the \a pill's \a rc_area as filled in by
1587 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1590 int req_capsule_server_pack(struct req_capsule *pill)
1592 const struct req_format *fmt;
1596 LASSERT(pill->rc_loc == RCL_SERVER);
1598 LASSERT(fmt != NULL);
1600 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1601 rc = lustre_pack_reply(pill->rc_req, count,
1602 pill->rc_area[RCL_SERVER], NULL);
1604 DEBUG_REQ(D_ERROR, pill->rc_req,
1605 "Cannot pack %d fields in format `%s': ",
1606 count, fmt->rf_name);
1610 EXPORT_SYMBOL(req_capsule_server_pack);
1613 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1614 * corresponding to the given RMF (\a field).
1616 static int __req_capsule_offset(const struct req_capsule *pill,
1617 const struct req_msg_field *field,
1618 enum req_location loc)
1622 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1623 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1624 pill->rc_fmt->rf_name,
1625 field->rmf_name, offset, loc);
1628 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1633 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1638 swabber_dumper_helper(struct req_capsule *pill,
1639 const struct req_msg_field *field,
1640 enum req_location loc,
1642 void *value, int len, int dump, void (*swabber)( void *))
1648 int inout = loc == RCL_CLIENT;
1650 swabber = swabber ?: field->rmf_swabber;
1652 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1653 swabber != NULL && value != NULL)
1658 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1659 if (dump && field->rmf_dumper) {
1660 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1661 do_swab ? "unswabbed " : "", field->rmf_name);
1662 field->rmf_dumper(value);
1667 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1669 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1670 "follows\n", field->rmf_name);
1671 field->rmf_dumper(value);
1678 * We're swabbing an array; swabber() swabs a single array element, so
1679 * swab every element.
1681 LASSERT((len % field->rmf_size) == 0);
1682 for (p = value, i = 0, n = len / field->rmf_size;
1684 i++, p += field->rmf_size) {
1685 if (dump && field->rmf_dumper) {
1686 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1687 "element %d follows\n",
1688 do_swab ? "unswabbed " : "", field->rmf_name, i);
1689 field->rmf_dumper(p);
1694 if (dump && field->rmf_dumper) {
1695 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1696 "element %d follows\n", field->rmf_name, i);
1697 field->rmf_dumper(value);
1701 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1705 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1706 * corresponding to the given RMF (\a field).
1708 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1709 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1710 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1711 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1712 * element of the array swabbed.
1714 static void *__req_capsule_get(struct req_capsule *pill,
1715 const struct req_msg_field *field,
1716 enum req_location loc,
1717 void (*swabber)( void *),
1720 const struct req_format *fmt;
1721 struct lustre_msg *msg;
1726 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1728 static const char *rcl_names[RCL_NR] = {
1729 [RCL_CLIENT] = "client",
1730 [RCL_SERVER] = "server"
1733 LASSERT(pill != NULL);
1734 LASSERT(pill != LP_POISON);
1736 LASSERT(fmt != NULL);
1737 LASSERT(fmt != LP_POISON);
1738 LASSERT(__req_format_is_sane(fmt));
1740 offset = __req_capsule_offset(pill, field, loc);
1742 msg = __req_msg(pill, loc);
1743 LASSERT(msg != NULL);
1745 getter = (field->rmf_flags & RMF_F_STRING) ?
1746 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1748 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1750 * We've already asserted that field->rmf_size > 0 in
1751 * req_layout_init().
1753 len = lustre_msg_buflen(msg, offset);
1754 if ((len % field->rmf_size) != 0) {
1755 CERROR("%s: array field size mismatch "
1756 "%d modulo %d != 0 (%d)\n",
1757 field->rmf_name, len, field->rmf_size, loc);
1760 } else if (pill->rc_area[loc][offset] != -1) {
1761 len = pill->rc_area[loc][offset];
1763 len = max(field->rmf_size, 0);
1765 value = getter(msg, offset, len);
1767 if (value == NULL) {
1768 DEBUG_REQ(D_ERROR, pill->rc_req,
1769 "Wrong buffer for field `%s' (%d of %d) "
1770 "in format `%s': %d vs. %d (%s)\n",
1771 field->rmf_name, offset, lustre_msg_bufcount(msg),
1772 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1775 swabber_dumper_helper(pill, field, loc, offset, value, len,
1783 * Dump a request and/or reply
1785 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
1787 const struct req_format *fmt;
1788 const struct req_msg_field *field;
1794 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
1795 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1796 field = FMT_FIELD(fmt, loc, i);
1797 if (field->rmf_dumper == NULL) {
1799 * FIXME Add a default hex dumper for fields that don't
1800 * have a specific dumper
1802 len = req_capsule_get_size(pill, field, loc);
1803 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
1804 "field size is %d\n", field->rmf_name, len);
1806 /* It's the dumping side-effect that we're interested in */
1807 (void) __req_capsule_get(pill, field, loc, NULL, 1);
1810 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
1816 void req_capsule_client_dump(struct req_capsule *pill)
1818 __req_capsule_dump(pill, RCL_CLIENT);
1820 EXPORT_SYMBOL(req_capsule_client_dump);
1825 void req_capsule_server_dump(struct req_capsule *pill)
1827 __req_capsule_dump(pill, RCL_SERVER);
1829 EXPORT_SYMBOL(req_capsule_server_dump);
1832 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1833 * buffer corresponding to the given RMF (\a field) of a \a pill.
1835 void *req_capsule_client_get(struct req_capsule *pill,
1836 const struct req_msg_field *field)
1838 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1840 EXPORT_SYMBOL(req_capsule_client_get);
1843 * Same as req_capsule_client_get(), but with a \a swabber argument.
1845 * Currently unused; will be removed when req_capsule_server_swab_get() is
1848 void *req_capsule_client_swab_get(struct req_capsule *pill,
1849 const struct req_msg_field *field,
1850 void (*swabber)(void* ))
1852 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1854 EXPORT_SYMBOL(req_capsule_client_swab_get);
1857 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
1859 * First the \a pill's request \a field's size is set (\a rc_area) using
1860 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1863 void *req_capsule_client_sized_get(struct req_capsule *pill,
1864 const struct req_msg_field *field,
1867 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1868 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1870 EXPORT_SYMBOL(req_capsule_client_sized_get);
1873 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
1874 * buffer corresponding to the given RMF (\a field) of a \a pill.
1876 void *req_capsule_server_get(struct req_capsule *pill,
1877 const struct req_msg_field *field)
1879 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1881 EXPORT_SYMBOL(req_capsule_server_get);
1884 * Same as req_capsule_server_get(), but with a \a swabber argument.
1886 * Ideally all swabbing should be done pursuant to RMF definitions, with no
1887 * swabbing done outside this capsule abstraction.
1889 void *req_capsule_server_swab_get(struct req_capsule *pill,
1890 const struct req_msg_field *field,
1893 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
1895 EXPORT_SYMBOL(req_capsule_server_swab_get);
1898 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
1900 * First the \a pill's request \a field's size is set (\a rc_area) using
1901 * req_capsule_set_size() with the given \a len. Then the actual buffer is
1904 void *req_capsule_server_sized_get(struct req_capsule *pill,
1905 const struct req_msg_field *field,
1908 req_capsule_set_size(pill, field, RCL_SERVER, len);
1909 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
1911 EXPORT_SYMBOL(req_capsule_server_sized_get);
1914 * Returns the buffer of a \a pill corresponding to the given \a field from the
1915 * request (if the caller is executing on the server-side) or reply (if the
1916 * caller is executing on the client-side).
1918 * This function convienient for use is code that could be executed on the
1919 * client and server alike.
1921 const void *req_capsule_other_get(struct req_capsule *pill,
1922 const struct req_msg_field *field)
1924 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
1926 EXPORT_SYMBOL(req_capsule_other_get);
1929 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
1930 * field of the given \a pill.
1932 * This function must be used when constructing variable sized fields of a
1935 void req_capsule_set_size(struct req_capsule *pill,
1936 const struct req_msg_field *field,
1937 enum req_location loc, int size)
1939 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1941 if ((size != field->rmf_size) &&
1942 (field->rmf_size != -1) &&
1943 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
1945 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
1946 (size % field->rmf_size != 0)) {
1947 CERROR("%s: array field size mismatch "
1948 "%d %% %d != 0 (%d)\n",
1949 field->rmf_name, size, field->rmf_size, loc);
1951 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
1952 size < field->rmf_size) {
1953 CERROR("%s: field size mismatch %d != %d (%d)\n",
1954 field->rmf_name, size, field->rmf_size, loc);
1959 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1961 EXPORT_SYMBOL(req_capsule_set_size);
1964 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
1965 * for the given \a pill's given \a field.
1967 * NB: this function doesn't correspond with req_capsule_set_size(), which
1968 * actually sets the size in pill.rc_area[loc][offset], but this function
1969 * returns the message buflen[offset], maybe we should use another name.
1971 int req_capsule_get_size(const struct req_capsule *pill,
1972 const struct req_msg_field *field,
1973 enum req_location loc)
1975 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1977 return lustre_msg_buflen(__req_msg(pill, loc),
1978 __req_capsule_offset(pill, field, loc));
1980 EXPORT_SYMBOL(req_capsule_get_size);
1983 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
1984 * given \a pill's request or reply (\a loc) given the field size recorded in
1985 * the \a pill's rc_area.
1987 * See also req_capsule_set_size().
1989 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1991 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1992 pill->rc_fmt->rf_fields[loc].nr,
1993 pill->rc_area[loc]);
1997 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
1998 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
1999 * PTLRPC request or reply given only an RQF (\a fmt).
2001 * This function should not be used for formats which contain variable size
2004 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2005 enum req_location loc)
2010 * This function should probably LASSERT() that fmt has no fields with
2011 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2012 * elements in the array there will ultimately be, but then, we could
2013 * assume that there will be at least one element, and that's just what
2016 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2020 for (; i < fmt->rf_fields[loc].nr; ++i)
2021 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2022 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2028 * Changes the format of an RPC.
2030 * The pill must already have been initialized, which means that it already has
2031 * a request format. The new format \a fmt must be an extension of the pill's
2032 * old format. Specifically: the new format must have as many request and reply
2033 * fields as the old one, and all fields shared by the old and new format must
2034 * be at least as large in the new format.
2036 * The new format's fields may be of different "type" than the old format, but
2037 * only for fields that are "opaque" blobs: fields which have a) have no
2038 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2039 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2040 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2041 * according to the key field. When the value, according to the key, contains a
2042 * structure (or array thereof) to be swabbed, the format should be changed to
2043 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2046 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2051 const struct req_format *old;
2053 LASSERT(pill->rc_fmt != NULL);
2054 LASSERT(__req_format_is_sane(fmt));
2058 * Sanity checking...
2060 for (i = 0; i < RCL_NR; ++i) {
2061 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2062 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2063 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2065 /* "opaque" fields can be transmogrified */
2066 if (ofield->rmf_swabber == NULL &&
2067 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2068 (ofield->rmf_size == -1 ||
2069 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2071 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2074 * Last field in old format can be shorter than in new.
2076 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2077 FMT_FIELD(old, i, j)->rmf_size);
2082 EXPORT_SYMBOL(req_capsule_extend);
2085 * This function returns a non-zero value if the given \a field is present in
2086 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2089 int req_capsule_has_field(const struct req_capsule *pill,
2090 const struct req_msg_field *field,
2091 enum req_location loc)
2093 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2095 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2097 EXPORT_SYMBOL(req_capsule_has_field);
2100 * Returns a non-zero value if the given \a field is present in the given \a
2101 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2103 int req_capsule_field_present(const struct req_capsule *pill,
2104 const struct req_msg_field *field,
2105 enum req_location loc)
2109 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2110 LASSERT(req_capsule_has_field(pill, field, loc));
2112 offset = __req_capsule_offset(pill, field, loc);
2113 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2115 EXPORT_SYMBOL(req_capsule_field_present);
2118 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2119 * request or reply (\a loc).
2121 * This is not the opposite of req_capsule_extend().
2123 void req_capsule_shrink(struct req_capsule *pill,
2124 const struct req_msg_field *field,
2125 unsigned int newlen,
2126 enum req_location loc)
2128 const struct req_format *fmt;
2129 struct lustre_msg *msg;
2134 LASSERT(fmt != NULL);
2135 LASSERT(__req_format_is_sane(fmt));
2136 LASSERT(req_capsule_has_field(pill, field, loc));
2137 LASSERT(req_capsule_field_present(pill, field, loc));
2139 offset = __req_capsule_offset(pill, field, loc);
2141 msg = __req_msg(pill, loc);
2142 len = lustre_msg_buflen(msg, offset);
2143 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2144 fmt->rf_name, field->rmf_name, len, newlen);
2146 if (loc == RCL_CLIENT)
2147 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2150 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2153 EXPORT_SYMBOL(req_capsule_shrink);
2155 int req_capsule_server_grow(struct req_capsule *pill,
2156 const struct req_msg_field *field,
2157 unsigned int newlen)
2159 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2161 int offset, len, rc;
2163 LASSERT(pill->rc_fmt != NULL);
2164 LASSERT(__req_format_is_sane(pill->rc_fmt));
2165 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2166 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2168 len = req_capsule_get_size(pill, field, RCL_SERVER);
2169 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2170 if (pill->rc_req->rq_repbuf_len >=
2171 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2172 CERROR("Inplace repack might be done\n");
2174 pill->rc_req->rq_reply_state = NULL;
2175 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2176 rc = req_capsule_server_pack(pill);
2178 /* put old rs back, the caller will decide what to do */
2179 pill->rc_req->rq_reply_state = rs;
2182 nrs = pill->rc_req->rq_reply_state;
2183 /* Now we need only buffers, copy first chunk */
2184 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2185 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2186 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2187 memcpy(to, from, len);
2188 /* check if we have tail and copy it too */
2189 if (rs->rs_msg->lm_bufcount > offset + 1) {
2190 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2191 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2192 offset = rs->rs_msg->lm_bufcount - 1;
2193 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2194 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2195 memcpy(to, from, len);
2197 /* drop old reply if everything is fine */
2198 if (rs->rs_difficult) {
2202 nrs->rs_difficult = 1;
2203 nrs->rs_no_ack = rs->rs_no_ack;
2204 for (i = 0; i < rs->rs_nlocks; i++) {
2205 nrs->rs_locks[i] = rs->rs_locks[i];
2206 nrs->rs_modes[i] = rs->rs_modes[i];
2210 rs->rs_difficult = 0;
2213 ptlrpc_rs_decref(rs);
2216 EXPORT_SYMBOL(req_capsule_server_grow);
2217 /* __REQ_LAYOUT_USER__ */