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 *mdt_swap_layouts[] = {
306 static const struct req_msg_field *obd_connect_client[] = {
314 static const struct req_msg_field *obd_connect_server[] = {
319 static const struct req_msg_field *obd_set_info_client[] = {
325 static const struct req_msg_field *ost_grant_shrink_client[] = {
331 static const struct req_msg_field *mds_getinfo_client[] = {
337 static const struct req_msg_field *mds_getinfo_server[] = {
342 static const struct req_msg_field *ldlm_enqueue_client[] = {
347 static const struct req_msg_field *ldlm_enqueue_server[] = {
352 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
358 static const struct req_msg_field *ldlm_cp_callback_client[] = {
364 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
370 static const struct req_msg_field *ldlm_gl_callback_server[] = {
375 static const struct req_msg_field *ldlm_intent_basic_client[] = {
381 static const struct req_msg_field *ldlm_intent_client[] = {
388 static const struct req_msg_field *ldlm_intent_server[] = {
396 static const struct req_msg_field *ldlm_intent_layout_client[] = {
401 &RMF_EADATA /* for new layout to be set up */
403 static const struct req_msg_field *ldlm_intent_open_server[] = {
413 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
417 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
422 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
431 static const struct req_msg_field *ldlm_intent_create_client[] = {
435 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
441 static const struct req_msg_field *ldlm_intent_open_client[] = {
445 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
452 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
456 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
461 static const struct req_msg_field *mds_getxattr_client[] = {
469 static const struct req_msg_field *mds_getxattr_server[] = {
475 static const struct req_msg_field *mds_getattr_server[] = {
484 static const struct req_msg_field *mds_setattr_server[] = {
493 static const struct req_msg_field *mds_update_client[] = {
498 static const struct req_msg_field *mds_update_server[] = {
503 static const struct req_msg_field *llog_origin_handle_create_client[] = {
509 static const struct req_msg_field *llogd_body_only[] = {
514 static const struct req_msg_field *llog_log_hdr_only[] = {
519 static const struct req_msg_field *llogd_conn_body_only[] = {
524 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
530 static const struct req_msg_field *obd_idx_read_client[] = {
535 static const struct req_msg_field *obd_idx_read_server[] = {
540 static const struct req_msg_field *ost_body_only[] = {
545 static const struct req_msg_field *ost_body_capa[] = {
551 static const struct req_msg_field *ost_destroy_client[] = {
559 static const struct req_msg_field *ost_brw_client[] = {
567 static const struct req_msg_field *ost_brw_read_server[] = {
572 static const struct req_msg_field *ost_brw_write_server[] = {
578 static const struct req_msg_field *ost_get_info_generic_server[] = {
583 static const struct req_msg_field *ost_get_info_generic_client[] = {
588 static const struct req_msg_field *ost_get_last_id_server[] = {
593 static const struct req_msg_field *ost_get_last_fid_server[] = {
598 static const struct req_msg_field *ost_get_fiemap_client[] = {
604 static const struct req_msg_field *ost_get_fiemap_server[] = {
609 static const struct req_msg_field *mdt_hsm_progress[] = {
611 &RMF_MDS_HSM_PROGRESS,
614 static const struct req_msg_field *mdt_hsm_ct_register[] = {
616 &RMF_MDS_HSM_ARCHIVE,
619 static const struct req_msg_field *mdt_hsm_action_server[] = {
621 &RMF_MDS_HSM_CURRENT_ACTION,
624 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
629 static const struct req_msg_field *mdt_hsm_state_set[] = {
636 static const struct req_msg_field *mdt_hsm_request[] = {
639 &RMF_MDS_HSM_REQUEST,
640 &RMF_MDS_HSM_USER_ITEM,
644 static struct req_format *req_formats[] = {
651 &RQF_MGS_CONFIG_READ,
660 &RQF_MDS_GETATTR_NAME,
669 &RQF_MDS_DONE_WRITING,
671 &RQF_MDS_REINT_CREATE,
672 &RQF_MDS_REINT_CREATE_RMT_ACL,
673 &RQF_MDS_REINT_CREATE_SLAVE,
674 &RQF_MDS_REINT_CREATE_SYM,
676 &RQF_MDS_REINT_UNLINK,
678 &RQF_MDS_REINT_RENAME,
679 &RQF_MDS_REINT_SETATTR,
680 &RQF_MDS_REINT_SETXATTR,
683 &RQF_MDS_HSM_PROGRESS,
684 &RQF_MDS_HSM_CT_REGISTER,
685 &RQF_MDS_HSM_CT_UNREGISTER,
686 &RQF_MDS_HSM_STATE_GET,
687 &RQF_MDS_HSM_STATE_SET,
689 &RQF_MDS_HSM_REQUEST,
690 &RQF_MDS_SWAP_LAYOUTS,
706 &RQF_OST_SET_GRANT_INFO,
707 &RQF_OST_GET_INFO_GENERIC,
708 &RQF_OST_GET_INFO_LAST_ID,
709 &RQF_OST_GET_INFO_LAST_FID,
710 &RQF_OST_SET_INFO_LAST_FID,
711 &RQF_OST_GET_INFO_FIEMAP,
713 &RQF_LDLM_ENQUEUE_LVB,
717 &RQF_LDLM_CP_CALLBACK,
718 &RQF_LDLM_BL_CALLBACK,
719 &RQF_LDLM_GL_CALLBACK,
720 &RQF_LDLM_GL_DESC_CALLBACK,
722 &RQF_LDLM_INTENT_BASIC,
723 &RQF_LDLM_INTENT_LAYOUT,
724 &RQF_LDLM_INTENT_GETATTR,
725 &RQF_LDLM_INTENT_OPEN,
726 &RQF_LDLM_INTENT_CREATE,
727 &RQF_LDLM_INTENT_UNLINK,
728 &RQF_LDLM_INTENT_QUOTA,
731 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
732 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
733 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
734 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
735 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
736 &RQF_LLOG_ORIGIN_CONNECT
739 struct req_msg_field {
740 const __u32 rmf_flags;
741 const char *rmf_name;
743 * Field length. (-1) means "variable length". If the
744 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
745 * but the actual size must be a whole multiple of \a rmf_size.
748 void (*rmf_swabber)(void *);
749 void (*rmf_dumper)(void *);
750 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
755 * The field is a string, must be NUL-terminated.
757 RMF_F_STRING = 1 << 0,
759 * The field's buffer size need not match the declared \a rmf_size.
761 RMF_F_NO_SIZE_CHECK = 1 << 1,
763 * The field's buffer size must be a whole multiple of the declared \a
764 * rmf_size and the \a rmf_swabber function must work on the declared \a
765 * rmf_size worth of bytes.
767 RMF_F_STRUCT_ARRAY = 1 << 2
775 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
776 .rmf_name = (name), \
777 .rmf_flags = (flags), \
778 .rmf_size = (size), \
779 .rmf_swabber = (void (*)(void*))(swabber), \
780 .rmf_dumper = (void (*)(void*))(dumper) \
783 struct req_msg_field RMF_GENERIC_DATA =
784 DEFINE_MSGF("generic_data", 0,
786 EXPORT_SYMBOL(RMF_GENERIC_DATA);
788 struct req_msg_field RMF_MGS_TARGET_INFO =
789 DEFINE_MSGF("mgs_target_info", 0,
790 sizeof(struct mgs_target_info),
791 lustre_swab_mgs_target_info, NULL);
792 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
794 struct req_msg_field RMF_MGS_SEND_PARAM =
795 DEFINE_MSGF("mgs_send_param", 0,
796 sizeof(struct mgs_send_param),
798 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
800 struct req_msg_field RMF_MGS_CONFIG_BODY =
801 DEFINE_MSGF("mgs_config_read request", 0,
802 sizeof(struct mgs_config_body),
803 lustre_swab_mgs_config_body, NULL);
804 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
806 struct req_msg_field RMF_MGS_CONFIG_RES =
807 DEFINE_MSGF("mgs_config_read reply ", 0,
808 sizeof(struct mgs_config_res),
809 lustre_swab_mgs_config_res, NULL);
810 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
812 struct req_msg_field RMF_U32 =
813 DEFINE_MSGF("generic u32", 0,
814 sizeof(__u32), lustre_swab_generic_32s, NULL);
815 EXPORT_SYMBOL(RMF_U32);
817 struct req_msg_field RMF_SETINFO_VAL =
818 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
819 EXPORT_SYMBOL(RMF_SETINFO_VAL);
821 struct req_msg_field RMF_GETINFO_KEY =
822 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
823 EXPORT_SYMBOL(RMF_GETINFO_KEY);
825 struct req_msg_field RMF_GETINFO_VALLEN =
826 DEFINE_MSGF("getinfo_vallen", 0,
827 sizeof(__u32), lustre_swab_generic_32s, NULL);
828 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
830 struct req_msg_field RMF_GETINFO_VAL =
831 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
832 EXPORT_SYMBOL(RMF_GETINFO_VAL);
834 struct req_msg_field RMF_SEQ_OPC =
835 DEFINE_MSGF("seq_query_opc", 0,
836 sizeof(__u32), lustre_swab_generic_32s, NULL);
837 EXPORT_SYMBOL(RMF_SEQ_OPC);
839 struct req_msg_field RMF_SEQ_RANGE =
840 DEFINE_MSGF("seq_query_range", 0,
841 sizeof(struct lu_seq_range),
842 lustre_swab_lu_seq_range, NULL);
843 EXPORT_SYMBOL(RMF_SEQ_RANGE);
845 struct req_msg_field RMF_FLD_OPC =
846 DEFINE_MSGF("fld_query_opc", 0,
847 sizeof(__u32), lustre_swab_generic_32s, NULL);
848 EXPORT_SYMBOL(RMF_FLD_OPC);
850 struct req_msg_field RMF_FLD_MDFLD =
851 DEFINE_MSGF("fld_query_mdfld", 0,
852 sizeof(struct lu_seq_range),
853 lustre_swab_lu_seq_range, NULL);
854 EXPORT_SYMBOL(RMF_FLD_MDFLD);
856 struct req_msg_field RMF_MDT_BODY =
857 DEFINE_MSGF("mdt_body", 0,
858 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
859 EXPORT_SYMBOL(RMF_MDT_BODY);
861 struct req_msg_field RMF_OBD_QUOTACTL =
862 DEFINE_MSGF("obd_quotactl", 0,
863 sizeof(struct obd_quotactl),
864 lustre_swab_obd_quotactl, NULL);
865 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
867 struct req_msg_field RMF_QUOTA_BODY =
868 DEFINE_MSGF("quota_body", 0,
869 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
870 EXPORT_SYMBOL(RMF_QUOTA_BODY);
872 struct req_msg_field RMF_MDT_EPOCH =
873 DEFINE_MSGF("mdt_ioepoch", 0,
874 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
875 EXPORT_SYMBOL(RMF_MDT_EPOCH);
877 struct req_msg_field RMF_PTLRPC_BODY =
878 DEFINE_MSGF("ptlrpc_body", 0,
879 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
880 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
882 struct req_msg_field RMF_OBD_STATFS =
883 DEFINE_MSGF("obd_statfs", 0,
884 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
885 EXPORT_SYMBOL(RMF_OBD_STATFS);
887 struct req_msg_field RMF_SETINFO_KEY =
888 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
889 EXPORT_SYMBOL(RMF_SETINFO_KEY);
891 struct req_msg_field RMF_NAME =
892 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
893 EXPORT_SYMBOL(RMF_NAME);
895 struct req_msg_field RMF_SYMTGT =
896 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
897 EXPORT_SYMBOL(RMF_SYMTGT);
899 struct req_msg_field RMF_TGTUUID =
900 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
902 EXPORT_SYMBOL(RMF_TGTUUID);
904 struct req_msg_field RMF_CLUUID =
905 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
907 EXPORT_SYMBOL(RMF_CLUUID);
909 struct req_msg_field RMF_STRING =
910 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
911 EXPORT_SYMBOL(RMF_STRING);
913 struct req_msg_field RMF_LLOGD_BODY =
914 DEFINE_MSGF("llogd_body", 0,
915 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
916 EXPORT_SYMBOL(RMF_LLOGD_BODY);
918 struct req_msg_field RMF_LLOG_LOG_HDR =
919 DEFINE_MSGF("llog_log_hdr", 0,
920 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
921 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
923 struct req_msg_field RMF_LLOGD_CONN_BODY =
924 DEFINE_MSGF("llogd_conn_body", 0,
925 sizeof(struct llogd_conn_body),
926 lustre_swab_llogd_conn_body, NULL);
927 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
930 * connection handle received in MDS_CONNECT request.
932 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
933 * that the client does not interpret at all.
935 struct req_msg_field RMF_CONN =
936 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
937 EXPORT_SYMBOL(RMF_CONN);
939 struct req_msg_field RMF_CONNECT_DATA =
941 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
942 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
943 sizeof(struct obd_connect_data),
945 /* For interoperability with 1.8 and 2.0 clients/servers.
946 * The RPC verification code allows larger RPC buffers, but not
947 * smaller buffers. Until we no longer need to keep compatibility
948 * with older servers/clients we can only check that the buffer
949 * size is at least as large as obd_connect_data_v1. That is not
950 * not in itself harmful, since the chance of just corrupting this
951 * field is low. See JIRA LU-16 for details. */
952 sizeof(struct obd_connect_data_v1),
954 lustre_swab_connect, NULL);
955 EXPORT_SYMBOL(RMF_CONNECT_DATA);
957 struct req_msg_field RMF_DLM_REQ =
958 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
959 sizeof(struct ldlm_request),
960 lustre_swab_ldlm_request, NULL);
961 EXPORT_SYMBOL(RMF_DLM_REQ);
963 struct req_msg_field RMF_DLM_REP =
964 DEFINE_MSGF("dlm_rep", 0,
965 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
966 EXPORT_SYMBOL(RMF_DLM_REP);
968 struct req_msg_field RMF_LDLM_INTENT =
969 DEFINE_MSGF("ldlm_intent", 0,
970 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
971 EXPORT_SYMBOL(RMF_LDLM_INTENT);
973 struct req_msg_field RMF_DLM_LVB =
974 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
975 EXPORT_SYMBOL(RMF_DLM_LVB);
977 struct req_msg_field RMF_DLM_GL_DESC =
978 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
979 lustre_swab_gl_desc, NULL);
980 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
982 struct req_msg_field RMF_MDT_MD =
983 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
984 EXPORT_SYMBOL(RMF_MDT_MD);
986 struct req_msg_field RMF_REC_REINT =
987 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
988 lustre_swab_mdt_rec_reint, NULL);
989 EXPORT_SYMBOL(RMF_REC_REINT);
991 /* FIXME: this length should be defined as a macro */
992 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
994 EXPORT_SYMBOL(RMF_EADATA);
996 struct req_msg_field RMF_ACL =
997 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
998 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
999 EXPORT_SYMBOL(RMF_ACL);
1001 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
1002 struct req_msg_field RMF_LOGCOOKIES =
1003 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
1004 sizeof(struct llog_cookie), NULL, NULL);
1005 EXPORT_SYMBOL(RMF_LOGCOOKIES);
1007 struct req_msg_field RMF_CAPA1 =
1008 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1009 lustre_swab_lustre_capa, NULL);
1010 EXPORT_SYMBOL(RMF_CAPA1);
1012 struct req_msg_field RMF_CAPA2 =
1013 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1014 lustre_swab_lustre_capa, NULL);
1015 EXPORT_SYMBOL(RMF_CAPA2);
1017 struct req_msg_field RMF_LAYOUT_INTENT =
1018 DEFINE_MSGF("layout_intent", 0,
1019 sizeof(struct layout_intent), lustre_swab_layout_intent,
1021 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1024 * OST request field.
1026 struct req_msg_field RMF_OST_BODY =
1027 DEFINE_MSGF("ost_body", 0,
1028 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1029 EXPORT_SYMBOL(RMF_OST_BODY);
1031 struct req_msg_field RMF_OBD_IOOBJ =
1032 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1033 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1034 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1036 struct req_msg_field RMF_NIOBUF_REMOTE =
1037 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1038 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1040 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1042 struct req_msg_field RMF_RCS =
1043 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1044 lustre_swab_generic_32s, dump_rcs);
1045 EXPORT_SYMBOL(RMF_RCS);
1047 struct req_msg_field RMF_OBD_ID =
1048 DEFINE_MSGF("obd_id", 0,
1049 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
1050 EXPORT_SYMBOL(RMF_OBD_ID);
1052 struct req_msg_field RMF_FID =
1053 DEFINE_MSGF("fid", 0,
1054 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1055 EXPORT_SYMBOL(RMF_FID);
1057 struct req_msg_field RMF_OST_ID =
1058 DEFINE_MSGF("ost_id", 0,
1059 sizeof(struct ost_id), lustre_swab_ost_id, NULL);
1060 EXPORT_SYMBOL(RMF_OST_ID);
1062 struct req_msg_field RMF_FIEMAP_KEY =
1063 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1064 lustre_swab_fiemap, NULL);
1065 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1067 struct req_msg_field RMF_FIEMAP_VAL =
1068 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1069 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1071 struct req_msg_field RMF_IDX_INFO =
1072 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1073 lustre_swab_idx_info, NULL);
1074 EXPORT_SYMBOL(RMF_IDX_INFO);
1075 struct req_msg_field RMF_HSM_USER_STATE =
1076 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1077 lustre_swab_hsm_user_state, NULL);
1078 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1080 struct req_msg_field RMF_HSM_STATE_SET =
1081 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1082 lustre_swab_hsm_state_set, NULL);
1083 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1085 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1086 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1087 lustre_swab_hsm_progress_kernel, NULL);
1088 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1090 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1091 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1092 lustre_swab_hsm_current_action, NULL);
1093 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1095 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1096 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1097 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1099 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1101 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1102 DEFINE_MSGF("hsm_archive", 0,
1103 sizeof(__u32), lustre_swab_generic_32s, NULL);
1104 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1106 struct req_msg_field RMF_MDS_HSM_REQUEST =
1107 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1108 lustre_swab_hsm_request, NULL);
1109 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1111 struct req_msg_field RMF_UPDATE = DEFINE_MSGF("update", 0, -1,
1112 lustre_swab_update_buf, NULL);
1113 EXPORT_SYMBOL(RMF_UPDATE);
1115 struct req_msg_field RMF_UPDATE_REPLY = DEFINE_MSGF("update_reply", 0, -1,
1116 lustre_swab_update_reply_buf,
1118 EXPORT_SYMBOL(RMF_UPDATE_REPLY);
1120 struct req_msg_field RMF_SWAP_LAYOUTS =
1121 DEFINE_MSGF("swap_layouts", 0, sizeof(struct mdc_swap_layouts),
1122 lustre_swab_swap_layouts, NULL);
1123 EXPORT_SYMBOL(RMF_SWAP_LAYOUTS);
1129 const char *rf_name;
1133 const struct req_msg_field **d;
1134 } rf_fields[RCL_NR];
1137 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1151 #define DEFINE_REQ_FMT0(name, client, server) \
1152 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1154 struct req_format RQF_OBD_PING =
1155 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1156 EXPORT_SYMBOL(RQF_OBD_PING);
1158 struct req_format RQF_OBD_SET_INFO =
1159 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1160 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1162 /* Read index file through the network */
1163 struct req_format RQF_OBD_IDX_READ =
1164 DEFINE_REQ_FMT0("OBD_IDX_READ",
1165 obd_idx_read_client, obd_idx_read_server);
1166 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1168 struct req_format RQF_SEC_CTX =
1169 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1170 EXPORT_SYMBOL(RQF_SEC_CTX);
1172 struct req_format RQF_MGS_TARGET_REG =
1173 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1174 mgs_target_info_only);
1175 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1177 struct req_format RQF_MGS_SET_INFO =
1178 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1180 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1182 struct req_format RQF_MGS_CONFIG_READ =
1183 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1184 mgs_config_read_server);
1185 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1187 struct req_format RQF_SEQ_QUERY =
1188 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1189 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1191 struct req_format RQF_FLD_QUERY =
1192 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1193 EXPORT_SYMBOL(RQF_FLD_QUERY);
1195 struct req_format RQF_LOG_CANCEL =
1196 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1197 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1199 struct req_format RQF_MDS_QUOTACHECK =
1200 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1201 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1203 struct req_format RQF_OST_QUOTACHECK =
1204 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1205 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1207 struct req_format RQF_MDS_QUOTACTL =
1208 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1209 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1211 struct req_format RQF_OST_QUOTACTL =
1212 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1213 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1215 struct req_format RQF_QC_CALLBACK =
1216 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1217 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1219 struct req_format RQF_QUOTA_DQACQ =
1220 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1221 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1223 struct req_format RQF_LDLM_INTENT_QUOTA =
1224 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1225 ldlm_intent_quota_client,
1226 ldlm_intent_quota_server);
1227 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1229 struct req_format RQF_MDS_GETSTATUS =
1230 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1231 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1233 struct req_format RQF_MDS_STATFS =
1234 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1235 EXPORT_SYMBOL(RQF_MDS_STATFS);
1237 struct req_format RQF_MDS_SYNC =
1238 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1239 EXPORT_SYMBOL(RQF_MDS_SYNC);
1241 struct req_format RQF_MDS_GETATTR =
1242 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1243 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1245 struct req_format RQF_MDS_GETXATTR =
1246 DEFINE_REQ_FMT0("MDS_GETXATTR",
1247 mds_getxattr_client, mds_getxattr_server);
1248 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1250 struct req_format RQF_MDS_GETATTR_NAME =
1251 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1252 mds_getattr_name_client, mds_getattr_server);
1253 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1255 struct req_format RQF_MDS_REINT =
1256 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1257 EXPORT_SYMBOL(RQF_MDS_REINT);
1259 struct req_format RQF_MDS_REINT_CREATE =
1260 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1261 mds_reint_create_client, mdt_body_capa);
1262 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1264 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1265 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1266 mds_reint_create_rmt_acl_client, mdt_body_capa);
1267 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1269 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1270 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1271 mds_reint_create_slave_client, mdt_body_capa);
1272 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1274 struct req_format RQF_MDS_REINT_CREATE_SYM =
1275 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1276 mds_reint_create_sym_client, mdt_body_capa);
1277 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1279 struct req_format RQF_MDS_REINT_OPEN =
1280 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1281 mds_reint_open_client, mds_reint_open_server);
1282 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1284 struct req_format RQF_MDS_REINT_UNLINK =
1285 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1286 mds_last_unlink_server);
1287 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1289 struct req_format RQF_MDS_REINT_LINK =
1290 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1291 mds_reint_link_client, mdt_body_only);
1292 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1294 struct req_format RQF_MDS_REINT_RENAME =
1295 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1296 mds_last_unlink_server);
1297 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1299 struct req_format RQF_MDS_REINT_SETATTR =
1300 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1301 mds_reint_setattr_client, mds_setattr_server);
1302 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1304 struct req_format RQF_MDS_REINT_SETXATTR =
1305 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1306 mds_reint_setxattr_client, mdt_body_only);
1307 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1309 struct req_format RQF_MDS_CONNECT =
1310 DEFINE_REQ_FMT0("MDS_CONNECT",
1311 obd_connect_client, obd_connect_server);
1312 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1314 struct req_format RQF_MDS_DISCONNECT =
1315 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1316 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1318 struct req_format RQF_MDS_GET_INFO =
1319 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1320 mds_getinfo_server);
1321 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1323 struct req_format RQF_UPDATE_OBJ =
1324 DEFINE_REQ_FMT0("OBJECT_UPDATE_OBJ", mds_update_client,
1326 EXPORT_SYMBOL(RQF_UPDATE_OBJ);
1328 struct req_format RQF_LDLM_ENQUEUE =
1329 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1330 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1331 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1333 struct req_format RQF_LDLM_ENQUEUE_LVB =
1334 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1335 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1336 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1338 struct req_format RQF_LDLM_CONVERT =
1339 DEFINE_REQ_FMT0("LDLM_CONVERT",
1340 ldlm_enqueue_client, ldlm_enqueue_server);
1341 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1343 struct req_format RQF_LDLM_CANCEL =
1344 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1345 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1347 struct req_format RQF_LDLM_CALLBACK =
1348 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1349 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1351 struct req_format RQF_LDLM_CP_CALLBACK =
1352 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1353 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1355 struct req_format RQF_LDLM_BL_CALLBACK =
1356 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1357 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1359 struct req_format RQF_LDLM_GL_CALLBACK =
1360 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1361 ldlm_gl_callback_server);
1362 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1364 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1365 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1366 ldlm_gl_callback_server);
1367 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1369 struct req_format RQF_LDLM_INTENT_BASIC =
1370 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1371 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1372 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1374 struct req_format RQF_LDLM_INTENT =
1375 DEFINE_REQ_FMT0("LDLM_INTENT",
1376 ldlm_intent_client, ldlm_intent_server);
1377 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1379 struct req_format RQF_LDLM_INTENT_LAYOUT =
1380 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1381 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1382 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1384 struct req_format RQF_LDLM_INTENT_GETATTR =
1385 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1386 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1387 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1389 struct req_format RQF_LDLM_INTENT_OPEN =
1390 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1391 ldlm_intent_open_client, ldlm_intent_open_server);
1392 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1394 struct req_format RQF_LDLM_INTENT_CREATE =
1395 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1396 ldlm_intent_create_client, ldlm_intent_getattr_server);
1397 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1399 struct req_format RQF_LDLM_INTENT_UNLINK =
1400 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1401 ldlm_intent_unlink_client, ldlm_intent_server);
1402 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1404 struct req_format RQF_MDS_CLOSE =
1405 DEFINE_REQ_FMT0("MDS_CLOSE",
1406 mdt_close_client, mds_last_unlink_server);
1407 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1409 struct req_format RQF_MDS_PIN =
1410 DEFINE_REQ_FMT0("MDS_PIN",
1411 mdt_body_capa, mdt_body_only);
1412 EXPORT_SYMBOL(RQF_MDS_PIN);
1414 struct req_format RQF_MDS_UNPIN =
1415 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1416 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1418 struct req_format RQF_MDS_DONE_WRITING =
1419 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1420 mdt_close_client, mdt_body_only);
1421 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1423 struct req_format RQF_MDS_READPAGE =
1424 DEFINE_REQ_FMT0("MDS_READPAGE",
1425 mdt_body_capa, mdt_body_only);
1426 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1428 struct req_format RQF_MDS_HSM_ACTION =
1429 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1430 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1432 struct req_format RQF_MDS_HSM_PROGRESS =
1433 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1434 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1436 struct req_format RQF_MDS_HSM_CT_REGISTER =
1437 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1438 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1440 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1441 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", empty, empty);
1442 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1444 struct req_format RQF_MDS_HSM_STATE_GET =
1445 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1446 mdt_body_capa, mdt_hsm_state_get_server);
1447 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1449 struct req_format RQF_MDS_HSM_STATE_SET =
1450 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1451 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1453 struct req_format RQF_MDS_HSM_REQUEST =
1454 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1455 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1457 struct req_format RQF_MDS_SWAP_LAYOUTS =
1458 DEFINE_REQ_FMT0("MDS_SWAP_LAYOUTS",
1459 mdt_swap_layouts, empty);
1460 EXPORT_SYMBOL(RQF_MDS_SWAP_LAYOUTS);
1462 /* This is for split */
1463 struct req_format RQF_MDS_WRITEPAGE =
1464 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1465 mdt_body_capa, mdt_body_only);
1466 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1468 struct req_format RQF_MDS_IS_SUBDIR =
1469 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1470 mdt_body_only, mdt_body_only);
1471 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1473 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1474 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1475 llog_origin_handle_create_client, llogd_body_only);
1476 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1478 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1479 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1480 llogd_body_only, llogd_body_only);
1481 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1483 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1484 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1485 llogd_body_only, llog_origin_handle_next_block_server);
1486 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1488 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1489 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1490 llogd_body_only, llog_origin_handle_next_block_server);
1491 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1493 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1494 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1495 llogd_body_only, llog_log_hdr_only);
1496 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1498 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1499 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1500 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1502 struct req_format RQF_OST_CONNECT =
1503 DEFINE_REQ_FMT0("OST_CONNECT",
1504 obd_connect_client, obd_connect_server);
1505 EXPORT_SYMBOL(RQF_OST_CONNECT);
1507 struct req_format RQF_OST_DISCONNECT =
1508 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1509 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1511 struct req_format RQF_OST_GETATTR =
1512 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1513 EXPORT_SYMBOL(RQF_OST_GETATTR);
1515 struct req_format RQF_OST_SETATTR =
1516 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1517 EXPORT_SYMBOL(RQF_OST_SETATTR);
1519 struct req_format RQF_OST_CREATE =
1520 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1521 EXPORT_SYMBOL(RQF_OST_CREATE);
1523 struct req_format RQF_OST_PUNCH =
1524 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1525 EXPORT_SYMBOL(RQF_OST_PUNCH);
1527 struct req_format RQF_OST_SYNC =
1528 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1529 EXPORT_SYMBOL(RQF_OST_SYNC);
1531 struct req_format RQF_OST_DESTROY =
1532 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1533 EXPORT_SYMBOL(RQF_OST_DESTROY);
1535 struct req_format RQF_OST_BRW_READ =
1536 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1537 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1539 struct req_format RQF_OST_BRW_WRITE =
1540 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1541 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1543 struct req_format RQF_OST_STATFS =
1544 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1545 EXPORT_SYMBOL(RQF_OST_STATFS);
1547 struct req_format RQF_OST_SET_GRANT_INFO =
1548 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1550 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1552 struct req_format RQF_OST_GET_INFO_GENERIC =
1553 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1554 ost_get_info_generic_server);
1555 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1557 struct req_format RQF_OST_GET_INFO_LAST_ID =
1558 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1559 ost_get_last_id_server);
1560 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1562 struct req_format RQF_OST_GET_INFO_LAST_FID =
1563 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1564 ost_get_last_fid_server);
1565 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1567 struct req_format RQF_OST_SET_INFO_LAST_FID =
1568 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1570 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1572 struct req_format RQF_OST_GET_INFO_FIEMAP =
1573 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1574 ost_get_fiemap_server);
1575 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1577 #if !defined(__REQ_LAYOUT_USER__)
1579 /* Convenience macro */
1580 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1583 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1584 * field of RQFs and the \a rmf_offset field of RMFs.
1586 int req_layout_init(void)
1591 struct req_format *rf = NULL;
1593 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1594 rf = req_formats[i];
1596 for (j = 0; j < RCL_NR; ++j) {
1597 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1598 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1599 struct req_msg_field *field;
1601 field = (typeof(field))rf->rf_fields[j].d[k];
1602 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1603 || field->rmf_size > 0);
1604 LASSERT(field->rmf_offset[i][j] == 0);
1606 * k + 1 to detect unused format/field
1609 field->rmf_offset[i][j] = k + 1;
1615 EXPORT_SYMBOL(req_layout_init);
1617 void req_layout_fini(void)
1620 EXPORT_SYMBOL(req_layout_fini);
1623 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1625 * Actual/expected field sizes are set elsewhere in functions in this file:
1626 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1627 * req_capsule_msg_size(). The \a rc_area information is used by.
1628 * ptlrpc_request_set_replen().
1630 void req_capsule_init_area(struct req_capsule *pill)
1634 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1635 pill->rc_area[RCL_CLIENT][i] = -1;
1636 pill->rc_area[RCL_SERVER][i] = -1;
1639 EXPORT_SYMBOL(req_capsule_init_area);
1642 * Initialize a pill.
1644 * The \a location indicates whether the caller is executing on the client side
1645 * (RCL_CLIENT) or server side (RCL_SERVER)..
1647 void req_capsule_init(struct req_capsule *pill,
1648 struct ptlrpc_request *req,
1649 enum req_location location)
1651 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1654 * Today all capsules are embedded in ptlrpc_request structs,
1655 * but just in case that ever isn't the case, we don't reach
1656 * into req unless req != NULL and pill is the one embedded in
1659 * The req->rq_pill_init flag makes it safe to initialize a pill
1660 * twice, which might happen in the OST paths as a result of the
1661 * high-priority RPC queue getting peeked at before ost_handle()
1662 * handles an OST RPC.
1664 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1667 memset(pill, 0, sizeof *pill);
1669 pill->rc_loc = location;
1670 req_capsule_init_area(pill);
1672 if (req != NULL && pill == &req->rq_pill)
1673 req->rq_pill_init = 1;
1675 EXPORT_SYMBOL(req_capsule_init);
1677 void req_capsule_fini(struct req_capsule *pill)
1680 EXPORT_SYMBOL(req_capsule_fini);
1682 static int __req_format_is_sane(const struct req_format *fmt)
1685 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1686 req_formats[fmt->rf_idx] == fmt;
1689 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1690 enum req_location loc)
1692 struct ptlrpc_request *req;
1695 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1699 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1700 * (see req_capsule_extend()).
1702 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1704 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1705 LASSERT(__req_format_is_sane(fmt));
1709 EXPORT_SYMBOL(req_capsule_set);
1712 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1715 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1716 * variable-sized fields. The field sizes come from the declared \a rmf_size
1717 * field of a \a pill's \a rc_fmt's RMF's.
1719 int req_capsule_filled_sizes(struct req_capsule *pill,
1720 enum req_location loc)
1722 const struct req_format *fmt = pill->rc_fmt;
1725 LASSERT(fmt != NULL);
1727 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1728 if (pill->rc_area[loc][i] == -1) {
1729 pill->rc_area[loc][i] =
1730 fmt->rf_fields[loc].d[i]->rmf_size;
1731 if (pill->rc_area[loc][i] == -1) {
1733 * Skip the following fields.
1735 * If this LASSERT() trips then you're missing a
1736 * call to req_capsule_set_size().
1738 LASSERT(loc != RCL_SERVER);
1745 EXPORT_SYMBOL(req_capsule_filled_sizes);
1748 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1750 * This function uses the \a pill's \a rc_area as filled in by
1751 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1754 int req_capsule_server_pack(struct req_capsule *pill)
1756 const struct req_format *fmt;
1760 LASSERT(pill->rc_loc == RCL_SERVER);
1762 LASSERT(fmt != NULL);
1764 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1765 rc = lustre_pack_reply(pill->rc_req, count,
1766 pill->rc_area[RCL_SERVER], NULL);
1768 DEBUG_REQ(D_ERROR, pill->rc_req,
1769 "Cannot pack %d fields in format `%s': ",
1770 count, fmt->rf_name);
1774 EXPORT_SYMBOL(req_capsule_server_pack);
1777 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1778 * corresponding to the given RMF (\a field).
1780 static int __req_capsule_offset(const struct req_capsule *pill,
1781 const struct req_msg_field *field,
1782 enum req_location loc)
1786 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1787 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1788 pill->rc_fmt->rf_name,
1789 field->rmf_name, offset, loc);
1792 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1797 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1802 swabber_dumper_helper(struct req_capsule *pill,
1803 const struct req_msg_field *field,
1804 enum req_location loc,
1806 void *value, int len, int dump, void (*swabber)( void *))
1812 int inout = loc == RCL_CLIENT;
1814 swabber = swabber ?: field->rmf_swabber;
1816 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1817 swabber != NULL && value != NULL)
1822 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1823 if (dump && field->rmf_dumper) {
1824 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1825 do_swab ? "unswabbed " : "", field->rmf_name);
1826 field->rmf_dumper(value);
1831 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1833 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1834 "follows\n", field->rmf_name);
1835 field->rmf_dumper(value);
1842 * We're swabbing an array; swabber() swabs a single array element, so
1843 * swab every element.
1845 LASSERT((len % field->rmf_size) == 0);
1846 for (p = value, i = 0, n = len / field->rmf_size;
1848 i++, p += field->rmf_size) {
1849 if (dump && field->rmf_dumper) {
1850 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1851 "element %d follows\n",
1852 do_swab ? "unswabbed " : "", field->rmf_name, i);
1853 field->rmf_dumper(p);
1858 if (dump && field->rmf_dumper) {
1859 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1860 "element %d follows\n", field->rmf_name, i);
1861 field->rmf_dumper(value);
1865 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1869 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1870 * corresponding to the given RMF (\a field).
1872 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1873 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1874 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1875 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1876 * element of the array swabbed.
1878 static void *__req_capsule_get(struct req_capsule *pill,
1879 const struct req_msg_field *field,
1880 enum req_location loc,
1881 void (*swabber)( void *),
1884 const struct req_format *fmt;
1885 struct lustre_msg *msg;
1890 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1892 static const char *rcl_names[RCL_NR] = {
1893 [RCL_CLIENT] = "client",
1894 [RCL_SERVER] = "server"
1897 LASSERT(pill != NULL);
1898 LASSERT(pill != LP_POISON);
1900 LASSERT(fmt != NULL);
1901 LASSERT(fmt != LP_POISON);
1902 LASSERT(__req_format_is_sane(fmt));
1904 offset = __req_capsule_offset(pill, field, loc);
1906 msg = __req_msg(pill, loc);
1907 LASSERT(msg != NULL);
1909 getter = (field->rmf_flags & RMF_F_STRING) ?
1910 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1912 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1914 * We've already asserted that field->rmf_size > 0 in
1915 * req_layout_init().
1917 len = lustre_msg_buflen(msg, offset);
1918 if ((len % field->rmf_size) != 0) {
1919 CERROR("%s: array field size mismatch "
1920 "%d modulo %d != 0 (%d)\n",
1921 field->rmf_name, len, field->rmf_size, loc);
1924 } else if (pill->rc_area[loc][offset] != -1) {
1925 len = pill->rc_area[loc][offset];
1927 len = max(field->rmf_size, 0);
1929 value = getter(msg, offset, len);
1931 if (value == NULL) {
1932 DEBUG_REQ(D_ERROR, pill->rc_req,
1933 "Wrong buffer for field `%s' (%d of %d) "
1934 "in format `%s': %d vs. %d (%s)\n",
1935 field->rmf_name, offset, lustre_msg_bufcount(msg),
1936 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
1939 swabber_dumper_helper(pill, field, loc, offset, value, len,
1947 * Dump a request and/or reply
1949 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
1951 const struct req_format *fmt;
1952 const struct req_msg_field *field;
1958 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
1959 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1960 field = FMT_FIELD(fmt, loc, i);
1961 if (field->rmf_dumper == NULL) {
1963 * FIXME Add a default hex dumper for fields that don't
1964 * have a specific dumper
1966 len = req_capsule_get_size(pill, field, loc);
1967 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
1968 "field size is %d\n", field->rmf_name, len);
1970 /* It's the dumping side-effect that we're interested in */
1971 (void) __req_capsule_get(pill, field, loc, NULL, 1);
1974 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
1980 void req_capsule_client_dump(struct req_capsule *pill)
1982 __req_capsule_dump(pill, RCL_CLIENT);
1984 EXPORT_SYMBOL(req_capsule_client_dump);
1989 void req_capsule_server_dump(struct req_capsule *pill)
1991 __req_capsule_dump(pill, RCL_SERVER);
1993 EXPORT_SYMBOL(req_capsule_server_dump);
1996 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
1997 * buffer corresponding to the given RMF (\a field) of a \a pill.
1999 void *req_capsule_client_get(struct req_capsule *pill,
2000 const struct req_msg_field *field)
2002 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2004 EXPORT_SYMBOL(req_capsule_client_get);
2007 * Same as req_capsule_client_get(), but with a \a swabber argument.
2009 * Currently unused; will be removed when req_capsule_server_swab_get() is
2012 void *req_capsule_client_swab_get(struct req_capsule *pill,
2013 const struct req_msg_field *field,
2016 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
2018 EXPORT_SYMBOL(req_capsule_client_swab_get);
2021 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
2023 * First the \a pill's request \a field's size is set (\a rc_area) using
2024 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2027 void *req_capsule_client_sized_get(struct req_capsule *pill,
2028 const struct req_msg_field *field,
2031 req_capsule_set_size(pill, field, RCL_CLIENT, len);
2032 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2034 EXPORT_SYMBOL(req_capsule_client_sized_get);
2037 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
2038 * buffer corresponding to the given RMF (\a field) of a \a pill.
2040 void *req_capsule_server_get(struct req_capsule *pill,
2041 const struct req_msg_field *field)
2043 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2045 EXPORT_SYMBOL(req_capsule_server_get);
2048 * Same as req_capsule_server_get(), but with a \a swabber argument.
2050 * Ideally all swabbing should be done pursuant to RMF definitions, with no
2051 * swabbing done outside this capsule abstraction.
2053 void *req_capsule_server_swab_get(struct req_capsule *pill,
2054 const struct req_msg_field *field,
2057 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2059 EXPORT_SYMBOL(req_capsule_server_swab_get);
2062 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
2064 * First the \a pill's request \a field's size is set (\a rc_area) using
2065 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2068 void *req_capsule_server_sized_get(struct req_capsule *pill,
2069 const struct req_msg_field *field,
2072 req_capsule_set_size(pill, field, RCL_SERVER, len);
2073 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2075 EXPORT_SYMBOL(req_capsule_server_sized_get);
2077 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2078 const struct req_msg_field *field,
2079 int len, void *swabber)
2081 req_capsule_set_size(pill, field, RCL_SERVER, len);
2082 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2084 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2087 * Returns the buffer of a \a pill corresponding to the given \a field from the
2088 * request (if the caller is executing on the server-side) or reply (if the
2089 * caller is executing on the client-side).
2091 * This function convienient for use is code that could be executed on the
2092 * client and server alike.
2094 const void *req_capsule_other_get(struct req_capsule *pill,
2095 const struct req_msg_field *field)
2097 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
2099 EXPORT_SYMBOL(req_capsule_other_get);
2102 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2103 * field of the given \a pill.
2105 * This function must be used when constructing variable sized fields of a
2108 void req_capsule_set_size(struct req_capsule *pill,
2109 const struct req_msg_field *field,
2110 enum req_location loc, int size)
2112 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2114 if ((size != field->rmf_size) &&
2115 (field->rmf_size != -1) &&
2116 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2118 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2119 (size % field->rmf_size != 0)) {
2120 CERROR("%s: array field size mismatch "
2121 "%d %% %d != 0 (%d)\n",
2122 field->rmf_name, size, field->rmf_size, loc);
2124 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2125 size < field->rmf_size) {
2126 CERROR("%s: field size mismatch %d != %d (%d)\n",
2127 field->rmf_name, size, field->rmf_size, loc);
2132 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2134 EXPORT_SYMBOL(req_capsule_set_size);
2137 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2138 * for the given \a pill's given \a field.
2140 * NB: this function doesn't correspond with req_capsule_set_size(), which
2141 * actually sets the size in pill.rc_area[loc][offset], but this function
2142 * returns the message buflen[offset], maybe we should use another name.
2144 int req_capsule_get_size(const struct req_capsule *pill,
2145 const struct req_msg_field *field,
2146 enum req_location loc)
2148 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2150 return lustre_msg_buflen(__req_msg(pill, loc),
2151 __req_capsule_offset(pill, field, loc));
2153 EXPORT_SYMBOL(req_capsule_get_size);
2156 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2157 * given \a pill's request or reply (\a loc) given the field size recorded in
2158 * the \a pill's rc_area.
2160 * See also req_capsule_set_size().
2162 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2164 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2165 pill->rc_fmt->rf_fields[loc].nr,
2166 pill->rc_area[loc]);
2170 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2171 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2172 * PTLRPC request or reply given only an RQF (\a fmt).
2174 * This function should not be used for formats which contain variable size
2177 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2178 enum req_location loc)
2183 * This function should probably LASSERT() that fmt has no fields with
2184 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2185 * elements in the array there will ultimately be, but then, we could
2186 * assume that there will be at least one element, and that's just what
2189 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2193 for (; i < fmt->rf_fields[loc].nr; ++i)
2194 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2195 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2201 * Changes the format of an RPC.
2203 * The pill must already have been initialized, which means that it already has
2204 * a request format. The new format \a fmt must be an extension of the pill's
2205 * old format. Specifically: the new format must have as many request and reply
2206 * fields as the old one, and all fields shared by the old and new format must
2207 * be at least as large in the new format.
2209 * The new format's fields may be of different "type" than the old format, but
2210 * only for fields that are "opaque" blobs: fields which have a) have no
2211 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2212 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2213 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2214 * according to the key field. When the value, according to the key, contains a
2215 * structure (or array thereof) to be swabbed, the format should be changed to
2216 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2219 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2224 const struct req_format *old;
2226 LASSERT(pill->rc_fmt != NULL);
2227 LASSERT(__req_format_is_sane(fmt));
2231 * Sanity checking...
2233 for (i = 0; i < RCL_NR; ++i) {
2234 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2235 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2236 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2238 /* "opaque" fields can be transmogrified */
2239 if (ofield->rmf_swabber == NULL &&
2240 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2241 (ofield->rmf_size == -1 ||
2242 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2244 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2247 * Last field in old format can be shorter than in new.
2249 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2250 FMT_FIELD(old, i, j)->rmf_size);
2255 EXPORT_SYMBOL(req_capsule_extend);
2258 * This function returns a non-zero value if the given \a field is present in
2259 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2262 int req_capsule_has_field(const struct req_capsule *pill,
2263 const struct req_msg_field *field,
2264 enum req_location loc)
2266 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2268 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2270 EXPORT_SYMBOL(req_capsule_has_field);
2273 * Returns a non-zero value if the given \a field is present in the given \a
2274 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2276 int req_capsule_field_present(const struct req_capsule *pill,
2277 const struct req_msg_field *field,
2278 enum req_location loc)
2282 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2283 LASSERT(req_capsule_has_field(pill, field, loc));
2285 offset = __req_capsule_offset(pill, field, loc);
2286 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2288 EXPORT_SYMBOL(req_capsule_field_present);
2291 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2292 * request or reply (\a loc).
2294 * This is not the opposite of req_capsule_extend().
2296 void req_capsule_shrink(struct req_capsule *pill,
2297 const struct req_msg_field *field,
2298 unsigned int newlen,
2299 enum req_location loc)
2301 const struct req_format *fmt;
2302 struct lustre_msg *msg;
2307 LASSERT(fmt != NULL);
2308 LASSERT(__req_format_is_sane(fmt));
2309 LASSERT(req_capsule_has_field(pill, field, loc));
2310 LASSERT(req_capsule_field_present(pill, field, loc));
2312 offset = __req_capsule_offset(pill, field, loc);
2314 msg = __req_msg(pill, loc);
2315 len = lustre_msg_buflen(msg, offset);
2316 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2317 fmt->rf_name, field->rmf_name, len, newlen);
2319 if (loc == RCL_CLIENT)
2320 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2323 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2326 EXPORT_SYMBOL(req_capsule_shrink);
2328 int req_capsule_server_grow(struct req_capsule *pill,
2329 const struct req_msg_field *field,
2330 unsigned int newlen)
2332 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2334 int offset, len, rc;
2336 LASSERT(pill->rc_fmt != NULL);
2337 LASSERT(__req_format_is_sane(pill->rc_fmt));
2338 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2339 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2341 len = req_capsule_get_size(pill, field, RCL_SERVER);
2342 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2343 if (pill->rc_req->rq_repbuf_len >=
2344 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2345 CERROR("Inplace repack might be done\n");
2347 pill->rc_req->rq_reply_state = NULL;
2348 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2349 rc = req_capsule_server_pack(pill);
2351 /* put old rs back, the caller will decide what to do */
2352 pill->rc_req->rq_reply_state = rs;
2355 nrs = pill->rc_req->rq_reply_state;
2356 /* Now we need only buffers, copy first chunk */
2357 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2358 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2359 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2360 memcpy(to, from, len);
2361 /* check if we have tail and copy it too */
2362 if (rs->rs_msg->lm_bufcount > offset + 1) {
2363 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2364 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2365 offset = rs->rs_msg->lm_bufcount - 1;
2366 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2367 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2368 memcpy(to, from, len);
2370 /* drop old reply if everything is fine */
2371 if (rs->rs_difficult) {
2375 nrs->rs_difficult = 1;
2376 nrs->rs_no_ack = rs->rs_no_ack;
2377 for (i = 0; i < rs->rs_nlocks; i++) {
2378 nrs->rs_locks[i] = rs->rs_locks[i];
2379 nrs->rs_modes[i] = rs->rs_modes[i];
2383 rs->rs_difficult = 0;
2386 ptlrpc_rs_decref(rs);
2389 EXPORT_SYMBOL(req_capsule_server_grow);
2390 /* __REQ_LAYOUT_USER__ */