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_update.h>
73 #include <lustre_acl.h>
74 #include <lustre_debug.h>
77 * RQFs (see below) refer to two struct req_msg_field arrays describing the
78 * client request and server reply, respectively.
80 /* empty set of fields... for suitable definition of emptiness. */
81 static const struct req_msg_field *empty[] = {
85 static const struct req_msg_field *mgs_target_info_only[] = {
90 static const struct req_msg_field *mgs_set_info[] = {
95 static const struct req_msg_field *mgs_config_read_client[] = {
100 static const struct req_msg_field *mgs_config_read_server[] = {
105 static const struct req_msg_field *log_cancel_client[] = {
110 static const struct req_msg_field *mdt_body_only[] = {
115 static const struct req_msg_field *mdt_body_capa[] = {
121 static const struct req_msg_field *quotactl_only[] = {
126 static const struct req_msg_field *quota_body_only[] = {
131 static const struct req_msg_field *ldlm_intent_quota_client[] = {
138 static const struct req_msg_field *ldlm_intent_quota_server[] = {
145 static const struct req_msg_field *mdt_close_client[] = {
152 static const struct req_msg_field *obd_statfs_server[] = {
157 static const struct req_msg_field *seq_query_client[] = {
163 static const struct req_msg_field *seq_query_server[] = {
168 static const struct req_msg_field *fld_query_client[] = {
174 static const struct req_msg_field *fld_query_server[] = {
179 static const struct req_msg_field *mds_getattr_name_client[] = {
186 static const struct req_msg_field *mds_reint_client[] = {
191 static const struct req_msg_field *mds_reint_create_client[] = {
198 static const struct req_msg_field *mds_reint_create_slave_client[] = {
207 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
216 static const struct req_msg_field *mds_reint_create_sym_client[] = {
225 static const struct req_msg_field *mds_reint_open_client[] = {
234 static const struct req_msg_field *mds_reint_open_server[] = {
243 static const struct req_msg_field *mds_reint_unlink_client[] = {
251 static const struct req_msg_field *mds_reint_link_client[] = {
260 static const struct req_msg_field *mds_reint_rename_client[] = {
270 static const struct req_msg_field *mds_last_unlink_server[] = {
279 static const struct req_msg_field *mds_reint_setattr_client[] = {
289 static const struct req_msg_field *mds_reint_setxattr_client[] = {
297 static const struct req_msg_field *obd_connect_client[] = {
305 static const struct req_msg_field *obd_connect_server[] = {
310 static const struct req_msg_field *obd_set_info_client[] = {
316 static const struct req_msg_field *ost_grant_shrink_client[] = {
322 static const struct req_msg_field *mds_getinfo_client[] = {
328 static const struct req_msg_field *mds_getinfo_server[] = {
333 static const struct req_msg_field *ldlm_enqueue_client[] = {
338 static const struct req_msg_field *ldlm_enqueue_server[] = {
343 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
349 static const struct req_msg_field *ldlm_cp_callback_client[] = {
355 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
361 static const struct req_msg_field *ldlm_gl_callback_server[] = {
366 static const struct req_msg_field *ldlm_intent_basic_client[] = {
372 static const struct req_msg_field *ldlm_intent_client[] = {
379 static const struct req_msg_field *ldlm_intent_server[] = {
387 static const struct req_msg_field *ldlm_intent_layout_client[] = {
392 &RMF_EADATA /* for new layout to be set up */
394 static const struct req_msg_field *ldlm_intent_open_server[] = {
404 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
408 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
413 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
422 static const struct req_msg_field *ldlm_intent_create_client[] = {
426 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
432 static const struct req_msg_field *ldlm_intent_open_client[] = {
436 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
443 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
447 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
452 static const struct req_msg_field *mds_getxattr_client[] = {
460 static const struct req_msg_field *mds_getxattr_server[] = {
466 static const struct req_msg_field *mds_getattr_server[] = {
475 static const struct req_msg_field *mds_setattr_server[] = {
484 static const struct req_msg_field *mds_update_client[] = {
489 static const struct req_msg_field *mds_update_server[] = {
494 static const struct req_msg_field *llog_origin_handle_create_client[] = {
500 static const struct req_msg_field *llogd_body_only[] = {
505 static const struct req_msg_field *llog_log_hdr_only[] = {
510 static const struct req_msg_field *llogd_conn_body_only[] = {
515 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
521 static const struct req_msg_field *obd_idx_read_client[] = {
526 static const struct req_msg_field *obd_idx_read_server[] = {
531 static const struct req_msg_field *ost_body_only[] = {
536 static const struct req_msg_field *ost_body_capa[] = {
542 static const struct req_msg_field *ost_destroy_client[] = {
550 static const struct req_msg_field *ost_brw_client[] = {
558 static const struct req_msg_field *ost_brw_read_server[] = {
563 static const struct req_msg_field *ost_brw_write_server[] = {
569 static const struct req_msg_field *ost_get_info_generic_server[] = {
574 static const struct req_msg_field *ost_get_info_generic_client[] = {
579 static const struct req_msg_field *ost_get_last_id_server[] = {
584 static const struct req_msg_field *ost_get_last_fid_server[] = {
589 static const struct req_msg_field *ost_get_fiemap_client[] = {
595 static const struct req_msg_field *ost_get_fiemap_server[] = {
600 static const struct req_msg_field *mdt_hsm_progress[] = {
602 &RMF_MDS_HSM_PROGRESS,
605 static const struct req_msg_field *mdt_hsm_ct_register[] = {
607 &RMF_MDS_HSM_ARCHIVE,
610 static const struct req_msg_field *mdt_hsm_action_server[] = {
612 &RMF_MDS_HSM_CURRENT_ACTION,
615 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
620 static const struct req_msg_field *mdt_hsm_state_set[] = {
627 static const struct req_msg_field *mdt_hsm_request[] = {
630 &RMF_MDS_HSM_REQUEST,
631 &RMF_MDS_HSM_USER_ITEM,
635 static struct req_format *req_formats[] = {
642 &RQF_MGS_CONFIG_READ,
651 &RQF_MDS_GETATTR_NAME,
660 &RQF_MDS_DONE_WRITING,
662 &RQF_MDS_REINT_CREATE,
663 &RQF_MDS_REINT_CREATE_RMT_ACL,
664 &RQF_MDS_REINT_CREATE_SLAVE,
665 &RQF_MDS_REINT_CREATE_SYM,
667 &RQF_MDS_REINT_UNLINK,
669 &RQF_MDS_REINT_RENAME,
670 &RQF_MDS_REINT_SETATTR,
671 &RQF_MDS_REINT_SETXATTR,
674 &RQF_MDS_HSM_PROGRESS,
675 &RQF_MDS_HSM_CT_REGISTER,
676 &RQF_MDS_HSM_CT_UNREGISTER,
677 &RQF_MDS_HSM_STATE_GET,
678 &RQF_MDS_HSM_STATE_SET,
680 &RQF_MDS_HSM_REQUEST,
698 &RQF_OST_SET_GRANT_INFO,
699 &RQF_OST_GET_INFO_GENERIC,
700 &RQF_OST_GET_INFO_LAST_ID,
701 &RQF_OST_GET_INFO_LAST_FID,
702 &RQF_OST_SET_INFO_LAST_FID,
703 &RQF_OST_GET_INFO_FIEMAP,
705 &RQF_LDLM_ENQUEUE_LVB,
709 &RQF_LDLM_CP_CALLBACK,
710 &RQF_LDLM_BL_CALLBACK,
711 &RQF_LDLM_GL_CALLBACK,
712 &RQF_LDLM_GL_DESC_CALLBACK,
714 &RQF_LDLM_INTENT_BASIC,
715 &RQF_LDLM_INTENT_LAYOUT,
716 &RQF_LDLM_INTENT_GETATTR,
717 &RQF_LDLM_INTENT_OPEN,
718 &RQF_LDLM_INTENT_CREATE,
719 &RQF_LDLM_INTENT_UNLINK,
720 &RQF_LDLM_INTENT_QUOTA,
723 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
724 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
725 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
726 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
727 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
728 &RQF_LLOG_ORIGIN_CONNECT
731 struct req_msg_field {
732 const __u32 rmf_flags;
733 const char *rmf_name;
735 * Field length. (-1) means "variable length". If the
736 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
737 * but the actual size must be a whole multiple of \a rmf_size.
740 void (*rmf_swabber)(void *);
741 void (*rmf_dumper)(void *);
742 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
747 * The field is a string, must be NUL-terminated.
749 RMF_F_STRING = 1 << 0,
751 * The field's buffer size need not match the declared \a rmf_size.
753 RMF_F_NO_SIZE_CHECK = 1 << 1,
755 * The field's buffer size must be a whole multiple of the declared \a
756 * rmf_size and the \a rmf_swabber function must work on the declared \a
757 * rmf_size worth of bytes.
759 RMF_F_STRUCT_ARRAY = 1 << 2
767 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
768 .rmf_name = (name), \
769 .rmf_flags = (flags), \
770 .rmf_size = (size), \
771 .rmf_swabber = (void (*)(void*))(swabber), \
772 .rmf_dumper = (void (*)(void*))(dumper) \
775 struct req_msg_field RMF_GENERIC_DATA =
776 DEFINE_MSGF("generic_data", 0,
778 EXPORT_SYMBOL(RMF_GENERIC_DATA);
780 struct req_msg_field RMF_MGS_TARGET_INFO =
781 DEFINE_MSGF("mgs_target_info", 0,
782 sizeof(struct mgs_target_info),
783 lustre_swab_mgs_target_info, NULL);
784 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
786 struct req_msg_field RMF_MGS_SEND_PARAM =
787 DEFINE_MSGF("mgs_send_param", 0,
788 sizeof(struct mgs_send_param),
790 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
792 struct req_msg_field RMF_MGS_CONFIG_BODY =
793 DEFINE_MSGF("mgs_config_read request", 0,
794 sizeof(struct mgs_config_body),
795 lustre_swab_mgs_config_body, NULL);
796 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
798 struct req_msg_field RMF_MGS_CONFIG_RES =
799 DEFINE_MSGF("mgs_config_read reply ", 0,
800 sizeof(struct mgs_config_res),
801 lustre_swab_mgs_config_res, NULL);
802 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
804 struct req_msg_field RMF_U32 =
805 DEFINE_MSGF("generic u32", 0,
806 sizeof(__u32), lustre_swab_generic_32s, NULL);
807 EXPORT_SYMBOL(RMF_U32);
809 struct req_msg_field RMF_SETINFO_VAL =
810 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
811 EXPORT_SYMBOL(RMF_SETINFO_VAL);
813 struct req_msg_field RMF_GETINFO_KEY =
814 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
815 EXPORT_SYMBOL(RMF_GETINFO_KEY);
817 struct req_msg_field RMF_GETINFO_VALLEN =
818 DEFINE_MSGF("getinfo_vallen", 0,
819 sizeof(__u32), lustre_swab_generic_32s, NULL);
820 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
822 struct req_msg_field RMF_GETINFO_VAL =
823 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
824 EXPORT_SYMBOL(RMF_GETINFO_VAL);
826 struct req_msg_field RMF_SEQ_OPC =
827 DEFINE_MSGF("seq_query_opc", 0,
828 sizeof(__u32), lustre_swab_generic_32s, NULL);
829 EXPORT_SYMBOL(RMF_SEQ_OPC);
831 struct req_msg_field RMF_SEQ_RANGE =
832 DEFINE_MSGF("seq_query_range", 0,
833 sizeof(struct lu_seq_range),
834 lustre_swab_lu_seq_range, NULL);
835 EXPORT_SYMBOL(RMF_SEQ_RANGE);
837 struct req_msg_field RMF_FLD_OPC =
838 DEFINE_MSGF("fld_query_opc", 0,
839 sizeof(__u32), lustre_swab_generic_32s, NULL);
840 EXPORT_SYMBOL(RMF_FLD_OPC);
842 struct req_msg_field RMF_FLD_MDFLD =
843 DEFINE_MSGF("fld_query_mdfld", 0,
844 sizeof(struct lu_seq_range),
845 lustre_swab_lu_seq_range, NULL);
846 EXPORT_SYMBOL(RMF_FLD_MDFLD);
848 struct req_msg_field RMF_MDT_BODY =
849 DEFINE_MSGF("mdt_body", 0,
850 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
851 EXPORT_SYMBOL(RMF_MDT_BODY);
853 struct req_msg_field RMF_OBD_QUOTACTL =
854 DEFINE_MSGF("obd_quotactl", 0,
855 sizeof(struct obd_quotactl),
856 lustre_swab_obd_quotactl, NULL);
857 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
859 struct req_msg_field RMF_QUOTA_BODY =
860 DEFINE_MSGF("quota_body", 0,
861 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
862 EXPORT_SYMBOL(RMF_QUOTA_BODY);
864 struct req_msg_field RMF_MDT_EPOCH =
865 DEFINE_MSGF("mdt_ioepoch", 0,
866 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
867 EXPORT_SYMBOL(RMF_MDT_EPOCH);
869 struct req_msg_field RMF_PTLRPC_BODY =
870 DEFINE_MSGF("ptlrpc_body", 0,
871 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
872 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
874 struct req_msg_field RMF_OBD_STATFS =
875 DEFINE_MSGF("obd_statfs", 0,
876 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
877 EXPORT_SYMBOL(RMF_OBD_STATFS);
879 struct req_msg_field RMF_SETINFO_KEY =
880 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
881 EXPORT_SYMBOL(RMF_SETINFO_KEY);
883 struct req_msg_field RMF_NAME =
884 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
885 EXPORT_SYMBOL(RMF_NAME);
887 struct req_msg_field RMF_SYMTGT =
888 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
889 EXPORT_SYMBOL(RMF_SYMTGT);
891 struct req_msg_field RMF_TGTUUID =
892 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
894 EXPORT_SYMBOL(RMF_TGTUUID);
896 struct req_msg_field RMF_CLUUID =
897 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
899 EXPORT_SYMBOL(RMF_CLUUID);
901 struct req_msg_field RMF_STRING =
902 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
903 EXPORT_SYMBOL(RMF_STRING);
905 struct req_msg_field RMF_LLOGD_BODY =
906 DEFINE_MSGF("llogd_body", 0,
907 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
908 EXPORT_SYMBOL(RMF_LLOGD_BODY);
910 struct req_msg_field RMF_LLOG_LOG_HDR =
911 DEFINE_MSGF("llog_log_hdr", 0,
912 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
913 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
915 struct req_msg_field RMF_LLOGD_CONN_BODY =
916 DEFINE_MSGF("llogd_conn_body", 0,
917 sizeof(struct llogd_conn_body),
918 lustre_swab_llogd_conn_body, NULL);
919 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
922 * connection handle received in MDS_CONNECT request.
924 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
925 * that the client does not interpret at all.
927 struct req_msg_field RMF_CONN =
928 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
929 EXPORT_SYMBOL(RMF_CONN);
931 struct req_msg_field RMF_CONNECT_DATA =
933 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
934 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
935 sizeof(struct obd_connect_data),
937 /* For interoperability with 1.8 and 2.0 clients/servers.
938 * The RPC verification code allows larger RPC buffers, but not
939 * smaller buffers. Until we no longer need to keep compatibility
940 * with older servers/clients we can only check that the buffer
941 * size is at least as large as obd_connect_data_v1. That is not
942 * not in itself harmful, since the chance of just corrupting this
943 * field is low. See JIRA LU-16 for details. */
944 sizeof(struct obd_connect_data_v1),
946 lustre_swab_connect, NULL);
947 EXPORT_SYMBOL(RMF_CONNECT_DATA);
949 struct req_msg_field RMF_DLM_REQ =
950 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
951 sizeof(struct ldlm_request),
952 lustre_swab_ldlm_request, NULL);
953 EXPORT_SYMBOL(RMF_DLM_REQ);
955 struct req_msg_field RMF_DLM_REP =
956 DEFINE_MSGF("dlm_rep", 0,
957 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
958 EXPORT_SYMBOL(RMF_DLM_REP);
960 struct req_msg_field RMF_LDLM_INTENT =
961 DEFINE_MSGF("ldlm_intent", 0,
962 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
963 EXPORT_SYMBOL(RMF_LDLM_INTENT);
965 struct req_msg_field RMF_DLM_LVB =
966 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
967 EXPORT_SYMBOL(RMF_DLM_LVB);
969 struct req_msg_field RMF_DLM_GL_DESC =
970 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
971 lustre_swab_gl_desc, NULL);
972 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
974 struct req_msg_field RMF_MDT_MD =
975 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
976 EXPORT_SYMBOL(RMF_MDT_MD);
978 struct req_msg_field RMF_REC_REINT =
979 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
980 lustre_swab_mdt_rec_reint, NULL);
981 EXPORT_SYMBOL(RMF_REC_REINT);
983 /* FIXME: this length should be defined as a macro */
984 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
986 EXPORT_SYMBOL(RMF_EADATA);
988 struct req_msg_field RMF_ACL =
989 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
990 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
991 EXPORT_SYMBOL(RMF_ACL);
993 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
994 struct req_msg_field RMF_LOGCOOKIES =
995 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
996 sizeof(struct llog_cookie), NULL, NULL);
997 EXPORT_SYMBOL(RMF_LOGCOOKIES);
999 struct req_msg_field RMF_CAPA1 =
1000 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1001 lustre_swab_lustre_capa, NULL);
1002 EXPORT_SYMBOL(RMF_CAPA1);
1004 struct req_msg_field RMF_CAPA2 =
1005 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1006 lustre_swab_lustre_capa, NULL);
1007 EXPORT_SYMBOL(RMF_CAPA2);
1009 struct req_msg_field RMF_LAYOUT_INTENT =
1010 DEFINE_MSGF("layout_intent", 0,
1011 sizeof(struct layout_intent), lustre_swab_layout_intent,
1013 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1016 * OST request field.
1018 struct req_msg_field RMF_OST_BODY =
1019 DEFINE_MSGF("ost_body", 0,
1020 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1021 EXPORT_SYMBOL(RMF_OST_BODY);
1023 struct req_msg_field RMF_OBD_IOOBJ =
1024 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1025 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1026 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1028 struct req_msg_field RMF_NIOBUF_REMOTE =
1029 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1030 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1032 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1034 struct req_msg_field RMF_RCS =
1035 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1036 lustre_swab_generic_32s, dump_rcs);
1037 EXPORT_SYMBOL(RMF_RCS);
1039 struct req_msg_field RMF_OBD_ID =
1040 DEFINE_MSGF("obd_id", 0,
1041 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
1042 EXPORT_SYMBOL(RMF_OBD_ID);
1044 struct req_msg_field RMF_FID =
1045 DEFINE_MSGF("fid", 0,
1046 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1047 EXPORT_SYMBOL(RMF_FID);
1049 struct req_msg_field RMF_FIEMAP_KEY =
1050 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1051 lustre_swab_fiemap, NULL);
1052 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1054 struct req_msg_field RMF_FIEMAP_VAL =
1055 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1056 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1058 struct req_msg_field RMF_IDX_INFO =
1059 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1060 lustre_swab_idx_info, NULL);
1061 EXPORT_SYMBOL(RMF_IDX_INFO);
1062 struct req_msg_field RMF_HSM_USER_STATE =
1063 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1064 lustre_swab_hsm_user_state, NULL);
1065 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1067 struct req_msg_field RMF_HSM_STATE_SET =
1068 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1069 lustre_swab_hsm_state_set, NULL);
1070 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1072 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1073 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1074 lustre_swab_hsm_progress_kernel, NULL);
1075 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1077 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1078 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1079 lustre_swab_hsm_current_action, NULL);
1080 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1082 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1083 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1084 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1086 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1088 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1089 DEFINE_MSGF("hsm_archive", 0,
1090 sizeof(__u32), lustre_swab_generic_32s, NULL);
1091 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1093 struct req_msg_field RMF_MDS_HSM_REQUEST =
1094 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1095 lustre_swab_hsm_request, NULL);
1096 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1098 struct req_msg_field RMF_UPDATE = DEFINE_MSGF("update", 0, -1,
1099 lustre_swab_update_buf, NULL);
1100 EXPORT_SYMBOL(RMF_UPDATE);
1102 struct req_msg_field RMF_UPDATE_REPLY = DEFINE_MSGF("update_reply", 0, -1,
1103 lustre_swab_update_reply_buf,
1105 EXPORT_SYMBOL(RMF_UPDATE_REPLY);
1112 const char *rf_name;
1116 const struct req_msg_field **d;
1117 } rf_fields[RCL_NR];
1120 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1134 #define DEFINE_REQ_FMT0(name, client, server) \
1135 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1137 struct req_format RQF_OBD_PING =
1138 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1139 EXPORT_SYMBOL(RQF_OBD_PING);
1141 struct req_format RQF_OBD_SET_INFO =
1142 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1143 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1145 /* Read index file through the network */
1146 struct req_format RQF_OBD_IDX_READ =
1147 DEFINE_REQ_FMT0("OBD_IDX_READ",
1148 obd_idx_read_client, obd_idx_read_server);
1149 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1151 struct req_format RQF_SEC_CTX =
1152 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1153 EXPORT_SYMBOL(RQF_SEC_CTX);
1155 struct req_format RQF_MGS_TARGET_REG =
1156 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1157 mgs_target_info_only);
1158 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1160 struct req_format RQF_MGS_SET_INFO =
1161 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1163 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1165 struct req_format RQF_MGS_CONFIG_READ =
1166 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1167 mgs_config_read_server);
1168 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1170 struct req_format RQF_SEQ_QUERY =
1171 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1172 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1174 struct req_format RQF_FLD_QUERY =
1175 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1176 EXPORT_SYMBOL(RQF_FLD_QUERY);
1178 struct req_format RQF_LOG_CANCEL =
1179 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1180 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1182 struct req_format RQF_MDS_QUOTACHECK =
1183 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1184 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1186 struct req_format RQF_OST_QUOTACHECK =
1187 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1188 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1190 struct req_format RQF_MDS_QUOTACTL =
1191 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1192 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1194 struct req_format RQF_OST_QUOTACTL =
1195 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1196 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1198 struct req_format RQF_QC_CALLBACK =
1199 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1200 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1202 struct req_format RQF_QUOTA_DQACQ =
1203 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1204 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1206 struct req_format RQF_LDLM_INTENT_QUOTA =
1207 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1208 ldlm_intent_quota_client,
1209 ldlm_intent_quota_server);
1210 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1212 struct req_format RQF_MDS_GETSTATUS =
1213 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1214 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1216 struct req_format RQF_MDS_STATFS =
1217 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1218 EXPORT_SYMBOL(RQF_MDS_STATFS);
1220 struct req_format RQF_MDS_SYNC =
1221 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1222 EXPORT_SYMBOL(RQF_MDS_SYNC);
1224 struct req_format RQF_MDS_GETATTR =
1225 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1226 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1228 struct req_format RQF_MDS_GETXATTR =
1229 DEFINE_REQ_FMT0("MDS_GETXATTR",
1230 mds_getxattr_client, mds_getxattr_server);
1231 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1233 struct req_format RQF_MDS_GETATTR_NAME =
1234 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1235 mds_getattr_name_client, mds_getattr_server);
1236 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1238 struct req_format RQF_MDS_REINT =
1239 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1240 EXPORT_SYMBOL(RQF_MDS_REINT);
1242 struct req_format RQF_MDS_REINT_CREATE =
1243 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1244 mds_reint_create_client, mdt_body_capa);
1245 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1247 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1248 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1249 mds_reint_create_rmt_acl_client, mdt_body_capa);
1250 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1252 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1253 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1254 mds_reint_create_slave_client, mdt_body_capa);
1255 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1257 struct req_format RQF_MDS_REINT_CREATE_SYM =
1258 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1259 mds_reint_create_sym_client, mdt_body_capa);
1260 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1262 struct req_format RQF_MDS_REINT_OPEN =
1263 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1264 mds_reint_open_client, mds_reint_open_server);
1265 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1267 struct req_format RQF_MDS_REINT_UNLINK =
1268 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1269 mds_last_unlink_server);
1270 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1272 struct req_format RQF_MDS_REINT_LINK =
1273 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1274 mds_reint_link_client, mdt_body_only);
1275 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1277 struct req_format RQF_MDS_REINT_RENAME =
1278 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1279 mds_last_unlink_server);
1280 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1282 struct req_format RQF_MDS_REINT_SETATTR =
1283 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1284 mds_reint_setattr_client, mds_setattr_server);
1285 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1287 struct req_format RQF_MDS_REINT_SETXATTR =
1288 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1289 mds_reint_setxattr_client, mdt_body_only);
1290 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1292 struct req_format RQF_MDS_CONNECT =
1293 DEFINE_REQ_FMT0("MDS_CONNECT",
1294 obd_connect_client, obd_connect_server);
1295 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1297 struct req_format RQF_MDS_DISCONNECT =
1298 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1299 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1301 struct req_format RQF_MDS_GET_INFO =
1302 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1303 mds_getinfo_server);
1304 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1306 struct req_format RQF_UPDATE_OBJ =
1307 DEFINE_REQ_FMT0("OBJECT_UPDATE_OBJ", mds_update_client,
1309 EXPORT_SYMBOL(RQF_UPDATE_OBJ);
1311 struct req_format RQF_LDLM_ENQUEUE =
1312 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1313 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1314 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1316 struct req_format RQF_LDLM_ENQUEUE_LVB =
1317 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1318 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1319 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1321 struct req_format RQF_LDLM_CONVERT =
1322 DEFINE_REQ_FMT0("LDLM_CONVERT",
1323 ldlm_enqueue_client, ldlm_enqueue_server);
1324 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1326 struct req_format RQF_LDLM_CANCEL =
1327 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1328 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1330 struct req_format RQF_LDLM_CALLBACK =
1331 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1332 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1334 struct req_format RQF_LDLM_CP_CALLBACK =
1335 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1336 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1338 struct req_format RQF_LDLM_BL_CALLBACK =
1339 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1340 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1342 struct req_format RQF_LDLM_GL_CALLBACK =
1343 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1344 ldlm_gl_callback_server);
1345 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1347 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1348 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1349 ldlm_gl_callback_server);
1350 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1352 struct req_format RQF_LDLM_INTENT_BASIC =
1353 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1354 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1355 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1357 struct req_format RQF_LDLM_INTENT =
1358 DEFINE_REQ_FMT0("LDLM_INTENT",
1359 ldlm_intent_client, ldlm_intent_server);
1360 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1362 struct req_format RQF_LDLM_INTENT_LAYOUT =
1363 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1364 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1365 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1367 struct req_format RQF_LDLM_INTENT_GETATTR =
1368 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1369 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1370 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1372 struct req_format RQF_LDLM_INTENT_OPEN =
1373 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1374 ldlm_intent_open_client, ldlm_intent_open_server);
1375 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1377 struct req_format RQF_LDLM_INTENT_CREATE =
1378 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1379 ldlm_intent_create_client, ldlm_intent_getattr_server);
1380 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1382 struct req_format RQF_LDLM_INTENT_UNLINK =
1383 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1384 ldlm_intent_unlink_client, ldlm_intent_server);
1385 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1387 struct req_format RQF_MDS_CLOSE =
1388 DEFINE_REQ_FMT0("MDS_CLOSE",
1389 mdt_close_client, mds_last_unlink_server);
1390 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1392 struct req_format RQF_MDS_PIN =
1393 DEFINE_REQ_FMT0("MDS_PIN",
1394 mdt_body_capa, mdt_body_only);
1395 EXPORT_SYMBOL(RQF_MDS_PIN);
1397 struct req_format RQF_MDS_UNPIN =
1398 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1399 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1401 struct req_format RQF_MDS_DONE_WRITING =
1402 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1403 mdt_close_client, mdt_body_only);
1404 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1406 struct req_format RQF_MDS_READPAGE =
1407 DEFINE_REQ_FMT0("MDS_READPAGE",
1408 mdt_body_capa, mdt_body_only);
1409 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1411 struct req_format RQF_MDS_HSM_ACTION =
1412 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1413 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1415 struct req_format RQF_MDS_HSM_PROGRESS =
1416 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1417 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1419 struct req_format RQF_MDS_HSM_CT_REGISTER =
1420 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1421 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1423 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1424 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", empty, empty);
1425 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1427 struct req_format RQF_MDS_HSM_STATE_GET =
1428 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1429 mdt_body_capa, mdt_hsm_state_get_server);
1430 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1432 struct req_format RQF_MDS_HSM_STATE_SET =
1433 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1434 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1436 struct req_format RQF_MDS_HSM_REQUEST =
1437 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1438 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1440 /* This is for split */
1441 struct req_format RQF_MDS_WRITEPAGE =
1442 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1443 mdt_body_capa, mdt_body_only);
1444 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1446 struct req_format RQF_MDS_IS_SUBDIR =
1447 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1448 mdt_body_only, mdt_body_only);
1449 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1451 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1452 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1453 llog_origin_handle_create_client, llogd_body_only);
1454 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1456 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1457 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1458 llogd_body_only, llogd_body_only);
1459 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1461 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1462 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1463 llogd_body_only, llog_origin_handle_next_block_server);
1464 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1466 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1467 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1468 llogd_body_only, llog_origin_handle_next_block_server);
1469 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1471 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1472 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1473 llogd_body_only, llog_log_hdr_only);
1474 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1476 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1477 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1478 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1480 struct req_format RQF_OST_CONNECT =
1481 DEFINE_REQ_FMT0("OST_CONNECT",
1482 obd_connect_client, obd_connect_server);
1483 EXPORT_SYMBOL(RQF_OST_CONNECT);
1485 struct req_format RQF_OST_DISCONNECT =
1486 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1487 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1489 struct req_format RQF_OST_GETATTR =
1490 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1491 EXPORT_SYMBOL(RQF_OST_GETATTR);
1493 struct req_format RQF_OST_SETATTR =
1494 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1495 EXPORT_SYMBOL(RQF_OST_SETATTR);
1497 struct req_format RQF_OST_CREATE =
1498 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1499 EXPORT_SYMBOL(RQF_OST_CREATE);
1501 struct req_format RQF_OST_PUNCH =
1502 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1503 EXPORT_SYMBOL(RQF_OST_PUNCH);
1505 struct req_format RQF_OST_SYNC =
1506 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1507 EXPORT_SYMBOL(RQF_OST_SYNC);
1509 struct req_format RQF_OST_DESTROY =
1510 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1511 EXPORT_SYMBOL(RQF_OST_DESTROY);
1513 struct req_format RQF_OST_BRW_READ =
1514 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1515 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1517 struct req_format RQF_OST_BRW_WRITE =
1518 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1519 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1521 struct req_format RQF_OST_STATFS =
1522 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1523 EXPORT_SYMBOL(RQF_OST_STATFS);
1525 struct req_format RQF_OST_SET_GRANT_INFO =
1526 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1528 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1530 struct req_format RQF_OST_GET_INFO_GENERIC =
1531 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1532 ost_get_info_generic_server);
1533 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1535 struct req_format RQF_OST_GET_INFO_LAST_ID =
1536 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1537 ost_get_last_id_server);
1538 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1540 struct req_format RQF_OST_GET_INFO_LAST_FID =
1541 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1542 ost_get_last_fid_server);
1543 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1545 struct req_format RQF_OST_SET_INFO_LAST_FID =
1546 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1548 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1550 struct req_format RQF_OST_GET_INFO_FIEMAP =
1551 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1552 ost_get_fiemap_server);
1553 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1555 #if !defined(__REQ_LAYOUT_USER__)
1557 /* Convenience macro */
1558 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1561 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1562 * field of RQFs and the \a rmf_offset field of RMFs.
1564 int req_layout_init(void)
1569 struct req_format *rf = NULL;
1571 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1572 rf = req_formats[i];
1574 for (j = 0; j < RCL_NR; ++j) {
1575 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1576 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1577 struct req_msg_field *field;
1579 field = (typeof(field))rf->rf_fields[j].d[k];
1580 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1581 || field->rmf_size > 0);
1582 LASSERT(field->rmf_offset[i][j] == 0);
1584 * k + 1 to detect unused format/field
1587 field->rmf_offset[i][j] = k + 1;
1593 EXPORT_SYMBOL(req_layout_init);
1595 void req_layout_fini(void)
1598 EXPORT_SYMBOL(req_layout_fini);
1601 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1603 * Actual/expected field sizes are set elsewhere in functions in this file:
1604 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1605 * req_capsule_msg_size(). The \a rc_area information is used by.
1606 * ptlrpc_request_set_replen().
1608 void req_capsule_init_area(struct req_capsule *pill)
1612 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1613 pill->rc_area[RCL_CLIENT][i] = -1;
1614 pill->rc_area[RCL_SERVER][i] = -1;
1617 EXPORT_SYMBOL(req_capsule_init_area);
1620 * Initialize a pill.
1622 * The \a location indicates whether the caller is executing on the client side
1623 * (RCL_CLIENT) or server side (RCL_SERVER)..
1625 void req_capsule_init(struct req_capsule *pill,
1626 struct ptlrpc_request *req,
1627 enum req_location location)
1629 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1632 * Today all capsules are embedded in ptlrpc_request structs,
1633 * but just in case that ever isn't the case, we don't reach
1634 * into req unless req != NULL and pill is the one embedded in
1637 * The req->rq_pill_init flag makes it safe to initialize a pill
1638 * twice, which might happen in the OST paths as a result of the
1639 * high-priority RPC queue getting peeked at before ost_handle()
1640 * handles an OST RPC.
1642 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1645 memset(pill, 0, sizeof *pill);
1647 pill->rc_loc = location;
1648 req_capsule_init_area(pill);
1650 if (req != NULL && pill == &req->rq_pill)
1651 req->rq_pill_init = 1;
1653 EXPORT_SYMBOL(req_capsule_init);
1655 void req_capsule_fini(struct req_capsule *pill)
1658 EXPORT_SYMBOL(req_capsule_fini);
1660 static int __req_format_is_sane(const struct req_format *fmt)
1663 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1664 req_formats[fmt->rf_idx] == fmt;
1667 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1668 enum req_location loc)
1670 struct ptlrpc_request *req;
1673 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1677 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1678 * (see req_capsule_extend()).
1680 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1682 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1683 LASSERT(__req_format_is_sane(fmt));
1687 EXPORT_SYMBOL(req_capsule_set);
1690 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1693 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1694 * variable-sized fields. The field sizes come from the declared \a rmf_size
1695 * field of a \a pill's \a rc_fmt's RMF's.
1697 int req_capsule_filled_sizes(struct req_capsule *pill,
1698 enum req_location loc)
1700 const struct req_format *fmt = pill->rc_fmt;
1703 LASSERT(fmt != NULL);
1705 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1706 if (pill->rc_area[loc][i] == -1) {
1707 pill->rc_area[loc][i] =
1708 fmt->rf_fields[loc].d[i]->rmf_size;
1709 if (pill->rc_area[loc][i] == -1) {
1711 * Skip the following fields.
1713 * If this LASSERT() trips then you're missing a
1714 * call to req_capsule_set_size().
1716 LASSERT(loc != RCL_SERVER);
1723 EXPORT_SYMBOL(req_capsule_filled_sizes);
1726 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1728 * This function uses the \a pill's \a rc_area as filled in by
1729 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1732 int req_capsule_server_pack(struct req_capsule *pill)
1734 const struct req_format *fmt;
1738 LASSERT(pill->rc_loc == RCL_SERVER);
1740 LASSERT(fmt != NULL);
1742 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1743 rc = lustre_pack_reply(pill->rc_req, count,
1744 pill->rc_area[RCL_SERVER], NULL);
1746 DEBUG_REQ(D_ERROR, pill->rc_req,
1747 "Cannot pack %d fields in format `%s': ",
1748 count, fmt->rf_name);
1752 EXPORT_SYMBOL(req_capsule_server_pack);
1755 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1756 * corresponding to the given RMF (\a field).
1758 static int __req_capsule_offset(const struct req_capsule *pill,
1759 const struct req_msg_field *field,
1760 enum req_location loc)
1764 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1765 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1766 pill->rc_fmt->rf_name,
1767 field->rmf_name, offset, loc);
1770 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1775 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1780 swabber_dumper_helper(struct req_capsule *pill,
1781 const struct req_msg_field *field,
1782 enum req_location loc,
1784 void *value, int len, int dump, void (*swabber)( void *))
1790 int inout = loc == RCL_CLIENT;
1792 swabber = swabber ?: field->rmf_swabber;
1794 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1795 swabber != NULL && value != NULL)
1800 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1801 if (dump && field->rmf_dumper) {
1802 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1803 do_swab ? "unswabbed " : "", field->rmf_name);
1804 field->rmf_dumper(value);
1809 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1811 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1812 "follows\n", field->rmf_name);
1813 field->rmf_dumper(value);
1820 * We're swabbing an array; swabber() swabs a single array element, so
1821 * swab every element.
1823 LASSERT((len % field->rmf_size) == 0);
1824 for (p = value, i = 0, n = len / field->rmf_size;
1826 i++, p += field->rmf_size) {
1827 if (dump && field->rmf_dumper) {
1828 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1829 "element %d follows\n",
1830 do_swab ? "unswabbed " : "", field->rmf_name, i);
1831 field->rmf_dumper(p);
1836 if (dump && field->rmf_dumper) {
1837 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1838 "element %d follows\n", field->rmf_name, i);
1839 field->rmf_dumper(value);
1843 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1847 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1848 * corresponding to the given RMF (\a field).
1850 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1851 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1852 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1853 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1854 * element of the array swabbed.
1856 static void *__req_capsule_get(struct req_capsule *pill,
1857 const struct req_msg_field *field,
1858 enum req_location loc,
1859 void (*swabber)( void *),
1862 const struct req_format *fmt;
1863 struct lustre_msg *msg;
1868 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1870 static const char *rcl_names[RCL_NR] = {
1871 [RCL_CLIENT] = "client",
1872 [RCL_SERVER] = "server"
1875 LASSERT(pill != NULL);
1876 LASSERT(pill != LP_POISON);
1878 LASSERT(fmt != NULL);
1879 LASSERT(fmt != LP_POISON);
1880 LASSERT(__req_format_is_sane(fmt));
1882 offset = __req_capsule_offset(pill, field, loc);
1884 msg = __req_msg(pill, loc);
1885 LASSERT(msg != NULL);
1887 getter = (field->rmf_flags & RMF_F_STRING) ?
1888 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1890 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1892 * We've already asserted that field->rmf_size > 0 in
1893 * req_layout_init().
1895 len = lustre_msg_buflen(msg, offset);
1896 if ((len % field->rmf_size) != 0) {
1897 CERROR("%s: array field size mismatch "
1898 "%d modulo %d != 0 (%d)\n",
1899 field->rmf_name, len, field->rmf_size, loc);
1902 } else if (pill->rc_area[loc][offset] != -1) {
1903 len = pill->rc_area[loc][offset];
1905 len = max(field->rmf_size, 0);
1907 value = getter(msg, offset, len);
1909 if (value == NULL) {
1910 DEBUG_REQ(D_ERROR, pill->rc_req,
1911 "Wrong buffer for field `%s' (%d of %d) "
1912 "in format `%s': %d vs. %d (%s)\n",
1913 field->rmf_name, offset, lustre_msg_bufcount(msg),
1914 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1917 swabber_dumper_helper(pill, field, loc, offset, value, len,
1925 * Dump a request and/or reply
1927 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
1929 const struct req_format *fmt;
1930 const struct req_msg_field *field;
1936 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
1937 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1938 field = FMT_FIELD(fmt, loc, i);
1939 if (field->rmf_dumper == NULL) {
1941 * FIXME Add a default hex dumper for fields that don't
1942 * have a specific dumper
1944 len = req_capsule_get_size(pill, field, loc);
1945 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
1946 "field size is %d\n", field->rmf_name, len);
1948 /* It's the dumping side-effect that we're interested in */
1949 (void) __req_capsule_get(pill, field, loc, NULL, 1);
1952 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
1958 void req_capsule_client_dump(struct req_capsule *pill)
1960 __req_capsule_dump(pill, RCL_CLIENT);
1962 EXPORT_SYMBOL(req_capsule_client_dump);
1967 void req_capsule_server_dump(struct req_capsule *pill)
1969 __req_capsule_dump(pill, RCL_SERVER);
1971 EXPORT_SYMBOL(req_capsule_server_dump);
1974 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1975 * buffer corresponding to the given RMF (\a field) of a \a pill.
1977 void *req_capsule_client_get(struct req_capsule *pill,
1978 const struct req_msg_field *field)
1980 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
1982 EXPORT_SYMBOL(req_capsule_client_get);
1985 * Same as req_capsule_client_get(), but with a \a swabber argument.
1987 * Currently unused; will be removed when req_capsule_server_swab_get() is
1990 void *req_capsule_client_swab_get(struct req_capsule *pill,
1991 const struct req_msg_field *field,
1994 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
1996 EXPORT_SYMBOL(req_capsule_client_swab_get);
1999 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
2001 * First the \a pill's request \a field's size is set (\a rc_area) using
2002 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2005 void *req_capsule_client_sized_get(struct req_capsule *pill,
2006 const struct req_msg_field *field,
2009 req_capsule_set_size(pill, field, RCL_CLIENT, len);
2010 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2012 EXPORT_SYMBOL(req_capsule_client_sized_get);
2015 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
2016 * buffer corresponding to the given RMF (\a field) of a \a pill.
2018 void *req_capsule_server_get(struct req_capsule *pill,
2019 const struct req_msg_field *field)
2021 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2023 EXPORT_SYMBOL(req_capsule_server_get);
2026 * Same as req_capsule_server_get(), but with a \a swabber argument.
2028 * Ideally all swabbing should be done pursuant to RMF definitions, with no
2029 * swabbing done outside this capsule abstraction.
2031 void *req_capsule_server_swab_get(struct req_capsule *pill,
2032 const struct req_msg_field *field,
2035 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2037 EXPORT_SYMBOL(req_capsule_server_swab_get);
2040 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
2042 * First the \a pill's request \a field's size is set (\a rc_area) using
2043 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2046 void *req_capsule_server_sized_get(struct req_capsule *pill,
2047 const struct req_msg_field *field,
2050 req_capsule_set_size(pill, field, RCL_SERVER, len);
2051 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2053 EXPORT_SYMBOL(req_capsule_server_sized_get);
2055 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2056 const struct req_msg_field *field,
2057 int len, void *swabber)
2059 req_capsule_set_size(pill, field, RCL_SERVER, len);
2060 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2062 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2065 * Returns the buffer of a \a pill corresponding to the given \a field from the
2066 * request (if the caller is executing on the server-side) or reply (if the
2067 * caller is executing on the client-side).
2069 * This function convienient for use is code that could be executed on the
2070 * client and server alike.
2072 const void *req_capsule_other_get(struct req_capsule *pill,
2073 const struct req_msg_field *field)
2075 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
2077 EXPORT_SYMBOL(req_capsule_other_get);
2080 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2081 * field of the given \a pill.
2083 * This function must be used when constructing variable sized fields of a
2086 void req_capsule_set_size(struct req_capsule *pill,
2087 const struct req_msg_field *field,
2088 enum req_location loc, int size)
2090 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2092 if ((size != field->rmf_size) &&
2093 (field->rmf_size != -1) &&
2094 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2096 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2097 (size % field->rmf_size != 0)) {
2098 CERROR("%s: array field size mismatch "
2099 "%d %% %d != 0 (%d)\n",
2100 field->rmf_name, size, field->rmf_size, loc);
2102 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2103 size < field->rmf_size) {
2104 CERROR("%s: field size mismatch %d != %d (%d)\n",
2105 field->rmf_name, size, field->rmf_size, loc);
2110 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2112 EXPORT_SYMBOL(req_capsule_set_size);
2115 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2116 * for the given \a pill's given \a field.
2118 * NB: this function doesn't correspond with req_capsule_set_size(), which
2119 * actually sets the size in pill.rc_area[loc][offset], but this function
2120 * returns the message buflen[offset], maybe we should use another name.
2122 int req_capsule_get_size(const struct req_capsule *pill,
2123 const struct req_msg_field *field,
2124 enum req_location loc)
2126 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2128 return lustre_msg_buflen(__req_msg(pill, loc),
2129 __req_capsule_offset(pill, field, loc));
2131 EXPORT_SYMBOL(req_capsule_get_size);
2134 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2135 * given \a pill's request or reply (\a loc) given the field size recorded in
2136 * the \a pill's rc_area.
2138 * See also req_capsule_set_size().
2140 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2142 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2143 pill->rc_fmt->rf_fields[loc].nr,
2144 pill->rc_area[loc]);
2148 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2149 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2150 * PTLRPC request or reply given only an RQF (\a fmt).
2152 * This function should not be used for formats which contain variable size
2155 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2156 enum req_location loc)
2161 * This function should probably LASSERT() that fmt has no fields with
2162 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2163 * elements in the array there will ultimately be, but then, we could
2164 * assume that there will be at least one element, and that's just what
2167 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2171 for (; i < fmt->rf_fields[loc].nr; ++i)
2172 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2173 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2179 * Changes the format of an RPC.
2181 * The pill must already have been initialized, which means that it already has
2182 * a request format. The new format \a fmt must be an extension of the pill's
2183 * old format. Specifically: the new format must have as many request and reply
2184 * fields as the old one, and all fields shared by the old and new format must
2185 * be at least as large in the new format.
2187 * The new format's fields may be of different "type" than the old format, but
2188 * only for fields that are "opaque" blobs: fields which have a) have no
2189 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2190 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2191 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2192 * according to the key field. When the value, according to the key, contains a
2193 * structure (or array thereof) to be swabbed, the format should be changed to
2194 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2197 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2202 const struct req_format *old;
2204 LASSERT(pill->rc_fmt != NULL);
2205 LASSERT(__req_format_is_sane(fmt));
2209 * Sanity checking...
2211 for (i = 0; i < RCL_NR; ++i) {
2212 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2213 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2214 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2216 /* "opaque" fields can be transmogrified */
2217 if (ofield->rmf_swabber == NULL &&
2218 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2219 (ofield->rmf_size == -1 ||
2220 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2222 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2225 * Last field in old format can be shorter than in new.
2227 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2228 FMT_FIELD(old, i, j)->rmf_size);
2233 EXPORT_SYMBOL(req_capsule_extend);
2236 * This function returns a non-zero value if the given \a field is present in
2237 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2240 int req_capsule_has_field(const struct req_capsule *pill,
2241 const struct req_msg_field *field,
2242 enum req_location loc)
2244 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2246 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2248 EXPORT_SYMBOL(req_capsule_has_field);
2251 * Returns a non-zero value if the given \a field is present in the given \a
2252 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2254 int req_capsule_field_present(const struct req_capsule *pill,
2255 const struct req_msg_field *field,
2256 enum req_location loc)
2260 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2261 LASSERT(req_capsule_has_field(pill, field, loc));
2263 offset = __req_capsule_offset(pill, field, loc);
2264 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2266 EXPORT_SYMBOL(req_capsule_field_present);
2269 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2270 * request or reply (\a loc).
2272 * This is not the opposite of req_capsule_extend().
2274 void req_capsule_shrink(struct req_capsule *pill,
2275 const struct req_msg_field *field,
2276 unsigned int newlen,
2277 enum req_location loc)
2279 const struct req_format *fmt;
2280 struct lustre_msg *msg;
2285 LASSERT(fmt != NULL);
2286 LASSERT(__req_format_is_sane(fmt));
2287 LASSERT(req_capsule_has_field(pill, field, loc));
2288 LASSERT(req_capsule_field_present(pill, field, loc));
2290 offset = __req_capsule_offset(pill, field, loc);
2292 msg = __req_msg(pill, loc);
2293 len = lustre_msg_buflen(msg, offset);
2294 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2295 fmt->rf_name, field->rmf_name, len, newlen);
2297 if (loc == RCL_CLIENT)
2298 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2301 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2304 EXPORT_SYMBOL(req_capsule_shrink);
2306 int req_capsule_server_grow(struct req_capsule *pill,
2307 const struct req_msg_field *field,
2308 unsigned int newlen)
2310 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2312 int offset, len, rc;
2314 LASSERT(pill->rc_fmt != NULL);
2315 LASSERT(__req_format_is_sane(pill->rc_fmt));
2316 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2317 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2319 len = req_capsule_get_size(pill, field, RCL_SERVER);
2320 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2321 if (pill->rc_req->rq_repbuf_len >=
2322 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2323 CERROR("Inplace repack might be done\n");
2325 pill->rc_req->rq_reply_state = NULL;
2326 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2327 rc = req_capsule_server_pack(pill);
2329 /* put old rs back, the caller will decide what to do */
2330 pill->rc_req->rq_reply_state = rs;
2333 nrs = pill->rc_req->rq_reply_state;
2334 /* Now we need only buffers, copy first chunk */
2335 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2336 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2337 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2338 memcpy(to, from, len);
2339 /* check if we have tail and copy it too */
2340 if (rs->rs_msg->lm_bufcount > offset + 1) {
2341 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2342 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2343 offset = rs->rs_msg->lm_bufcount - 1;
2344 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2345 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2346 memcpy(to, from, len);
2348 /* drop old reply if everything is fine */
2349 if (rs->rs_difficult) {
2353 nrs->rs_difficult = 1;
2354 nrs->rs_no_ack = rs->rs_no_ack;
2355 for (i = 0; i < rs->rs_nlocks; i++) {
2356 nrs->rs_locks[i] = rs->rs_locks[i];
2357 nrs->rs_modes[i] = rs->rs_modes[i];
2361 rs->rs_difficult = 0;
2364 ptlrpc_rs_decref(rs);
2367 EXPORT_SYMBOL(req_capsule_server_grow);
2368 /* __REQ_LAYOUT_USER__ */