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
53 #include <linux/module.h>
55 /* LUSTRE_VERSION_CODE */
56 #include <lustre_ver.h>
58 #include <obd_support.h>
59 /* lustre_swab_mdt_body */
60 #include <lustre/lustre_idl.h>
61 /* obd2cli_tgt() (required by DEBUG_REQ()) */
64 /* __REQ_LAYOUT_USER__ */
66 /* struct ptlrpc_request, lustre_msg* */
67 #include <lustre_req_layout.h>
68 #include <lustre_update.h>
69 #include <lustre_acl.h>
70 #include <lustre_debug.h>
73 * RQFs (see below) refer to two struct req_msg_field arrays describing the
74 * client request and server reply, respectively.
76 /* empty set of fields... for suitable definition of emptiness. */
77 static const struct req_msg_field *empty[] = {
81 static const struct req_msg_field *mgs_target_info_only[] = {
86 static const struct req_msg_field *mgs_set_info[] = {
91 static const struct req_msg_field *mgs_config_read_client[] = {
96 static const struct req_msg_field *mgs_config_read_server[] = {
101 static const struct req_msg_field *log_cancel_client[] = {
106 static const struct req_msg_field *mdt_body_only[] = {
111 static const struct req_msg_field *mdt_body_capa[] = {
117 static const struct req_msg_field *quotactl_only[] = {
122 static const struct req_msg_field *quota_body_only[] = {
127 static const struct req_msg_field *ldlm_intent_quota_client[] = {
134 static const struct req_msg_field *ldlm_intent_quota_server[] = {
141 static const struct req_msg_field *mdt_close_client[] = {
148 static const struct req_msg_field *mdt_release_close_client[] = {
156 static const struct req_msg_field *obd_statfs_server[] = {
161 static const struct req_msg_field *seq_query_client[] = {
167 static const struct req_msg_field *seq_query_server[] = {
172 static const struct req_msg_field *fld_query_client[] = {
178 static const struct req_msg_field *fld_query_server[] = {
183 static const struct req_msg_field *mds_getattr_name_client[] = {
190 static const struct req_msg_field *mds_reint_client[] = {
195 static const struct req_msg_field *mds_reint_create_client[] = {
202 static const struct req_msg_field *mds_reint_create_slave_client[] = {
211 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
220 static const struct req_msg_field *mds_reint_create_sym_client[] = {
229 static const struct req_msg_field *mds_reint_open_client[] = {
238 static const struct req_msg_field *mds_reint_open_server[] = {
247 static const struct req_msg_field *mds_reint_unlink_client[] = {
255 static const struct req_msg_field *mds_reint_link_client[] = {
264 static const struct req_msg_field *mds_reint_rename_client[] = {
274 static const struct req_msg_field *mds_last_unlink_server[] = {
283 static const struct req_msg_field *mds_reint_setattr_client[] = {
293 static const struct req_msg_field *mds_reint_setxattr_client[] = {
301 static const struct req_msg_field *mdt_swap_layouts[] = {
310 static const struct req_msg_field *obd_connect_client[] = {
318 static const struct req_msg_field *obd_connect_server[] = {
323 static const struct req_msg_field *obd_set_info_client[] = {
329 static const struct req_msg_field *ost_grant_shrink_client[] = {
335 static const struct req_msg_field *mds_getinfo_client[] = {
341 static const struct req_msg_field *mds_getinfo_server[] = {
346 static const struct req_msg_field *ldlm_enqueue_client[] = {
351 static const struct req_msg_field *ldlm_enqueue_server[] = {
356 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
362 static const struct req_msg_field *ldlm_cp_callback_client[] = {
368 static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
374 static const struct req_msg_field *ldlm_gl_callback_server[] = {
379 static const struct req_msg_field *ldlm_intent_basic_client[] = {
385 static const struct req_msg_field *ldlm_intent_client[] = {
392 static const struct req_msg_field *ldlm_intent_server[] = {
400 static const struct req_msg_field *ldlm_intent_layout_client[] = {
405 &RMF_EADATA /* for new layout to be set up */
407 static const struct req_msg_field *ldlm_intent_open_server[] = {
417 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
421 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
426 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
435 static const struct req_msg_field *ldlm_intent_create_client[] = {
439 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
445 static const struct req_msg_field *ldlm_intent_open_client[] = {
449 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
456 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
460 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
465 static const struct req_msg_field *ldlm_intent_getxattr_client[] = {
473 static const struct req_msg_field *ldlm_intent_getxattr_server[] = {
478 &RMF_ACL, /* for req_capsule_extend/mdt_intent_policy */
484 static const struct req_msg_field *mds_getxattr_client[] = {
492 static const struct req_msg_field *mds_getxattr_server[] = {
498 static const struct req_msg_field *mds_getattr_server[] = {
507 static const struct req_msg_field *mds_setattr_server[] = {
516 static const struct req_msg_field *mds_update_client[] = {
521 static const struct req_msg_field *mds_update_server[] = {
526 static const struct req_msg_field *llog_origin_handle_create_client[] = {
532 static const struct req_msg_field *llogd_body_only[] = {
537 static const struct req_msg_field *llog_log_hdr_only[] = {
542 static const struct req_msg_field *llogd_conn_body_only[] = {
547 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
553 static const struct req_msg_field *obd_idx_read_client[] = {
558 static const struct req_msg_field *obd_idx_read_server[] = {
563 static const struct req_msg_field *ost_body_only[] = {
568 static const struct req_msg_field *ost_body_capa[] = {
574 static const struct req_msg_field *ost_destroy_client[] = {
582 static const struct req_msg_field *ost_brw_client[] = {
590 static const struct req_msg_field *ost_brw_read_server[] = {
595 static const struct req_msg_field *ost_brw_write_server[] = {
601 static const struct req_msg_field *ost_get_info_generic_server[] = {
606 static const struct req_msg_field *ost_get_info_generic_client[] = {
611 static const struct req_msg_field *ost_get_last_id_server[] = {
616 static const struct req_msg_field *ost_get_last_fid_server[] = {
621 static const struct req_msg_field *ost_get_fiemap_client[] = {
627 static const struct req_msg_field *ost_get_fiemap_server[] = {
632 static const struct req_msg_field *mdt_hsm_progress[] = {
635 &RMF_MDS_HSM_PROGRESS,
638 static const struct req_msg_field *mdt_hsm_ct_register[] = {
641 &RMF_MDS_HSM_ARCHIVE,
644 static const struct req_msg_field *mdt_hsm_ct_unregister[] = {
649 static const struct req_msg_field *mdt_hsm_action_server[] = {
652 &RMF_MDS_HSM_CURRENT_ACTION,
655 static const struct req_msg_field *mdt_hsm_state_get_server[] = {
661 static const struct req_msg_field *mdt_hsm_state_set[] = {
668 static const struct req_msg_field *mdt_hsm_request[] = {
671 &RMF_MDS_HSM_REQUEST,
672 &RMF_MDS_HSM_USER_ITEM,
676 static struct req_format *req_formats[] = {
683 &RQF_MGS_CONFIG_READ,
692 &RQF_MDS_GETATTR_NAME,
696 &RQF_MDS_RELEASE_CLOSE,
702 &RQF_MDS_DONE_WRITING,
704 &RQF_MDS_REINT_CREATE,
705 &RQF_MDS_REINT_CREATE_RMT_ACL,
706 &RQF_MDS_REINT_CREATE_SLAVE,
707 &RQF_MDS_REINT_CREATE_SYM,
709 &RQF_MDS_REINT_UNLINK,
711 &RQF_MDS_REINT_RENAME,
712 &RQF_MDS_REINT_SETATTR,
713 &RQF_MDS_REINT_SETXATTR,
716 &RQF_MDS_HSM_PROGRESS,
717 &RQF_MDS_HSM_CT_REGISTER,
718 &RQF_MDS_HSM_CT_UNREGISTER,
719 &RQF_MDS_HSM_STATE_GET,
720 &RQF_MDS_HSM_STATE_SET,
722 &RQF_MDS_HSM_REQUEST,
723 &RQF_MDS_SWAP_LAYOUTS,
739 &RQF_OST_SET_GRANT_INFO,
740 &RQF_OST_GET_INFO_GENERIC,
741 &RQF_OST_GET_INFO_LAST_ID,
742 &RQF_OST_GET_INFO_LAST_FID,
743 &RQF_OST_SET_INFO_LAST_FID,
744 &RQF_OST_GET_INFO_FIEMAP,
746 &RQF_LDLM_ENQUEUE_LVB,
750 &RQF_LDLM_CP_CALLBACK,
751 &RQF_LDLM_BL_CALLBACK,
752 &RQF_LDLM_GL_CALLBACK,
753 &RQF_LDLM_GL_DESC_CALLBACK,
755 &RQF_LDLM_INTENT_BASIC,
756 &RQF_LDLM_INTENT_LAYOUT,
757 &RQF_LDLM_INTENT_GETATTR,
758 &RQF_LDLM_INTENT_OPEN,
759 &RQF_LDLM_INTENT_CREATE,
760 &RQF_LDLM_INTENT_UNLINK,
761 &RQF_LDLM_INTENT_GETXATTR,
762 &RQF_LDLM_INTENT_QUOTA,
765 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
766 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
767 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
768 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
769 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
770 &RQF_LLOG_ORIGIN_CONNECT,
774 struct req_msg_field {
775 const __u32 rmf_flags;
776 const char *rmf_name;
778 * Field length. (-1) means "variable length". If the
779 * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
780 * but the actual size must be a whole multiple of \a rmf_size.
783 void (*rmf_swabber)(void *);
784 void (*rmf_dumper)(void *);
785 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
790 * The field is a string, must be NUL-terminated.
792 RMF_F_STRING = 1 << 0,
794 * The field's buffer size need not match the declared \a rmf_size.
796 RMF_F_NO_SIZE_CHECK = 1 << 1,
798 * The field's buffer size must be a whole multiple of the declared \a
799 * rmf_size and the \a rmf_swabber function must work on the declared \a
800 * rmf_size worth of bytes.
802 RMF_F_STRUCT_ARRAY = 1 << 2
810 #define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
811 .rmf_name = (name), \
812 .rmf_flags = (flags), \
813 .rmf_size = (size), \
814 .rmf_swabber = (void (*)(void*))(swabber), \
815 .rmf_dumper = (void (*)(void*))(dumper) \
818 struct req_msg_field RMF_GENERIC_DATA =
819 DEFINE_MSGF("generic_data", 0,
821 EXPORT_SYMBOL(RMF_GENERIC_DATA);
823 struct req_msg_field RMF_MGS_TARGET_INFO =
824 DEFINE_MSGF("mgs_target_info", 0,
825 sizeof(struct mgs_target_info),
826 lustre_swab_mgs_target_info, NULL);
827 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
829 struct req_msg_field RMF_MGS_SEND_PARAM =
830 DEFINE_MSGF("mgs_send_param", 0,
831 sizeof(struct mgs_send_param),
833 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
835 struct req_msg_field RMF_MGS_CONFIG_BODY =
836 DEFINE_MSGF("mgs_config_read request", 0,
837 sizeof(struct mgs_config_body),
838 lustre_swab_mgs_config_body, NULL);
839 EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
841 struct req_msg_field RMF_MGS_CONFIG_RES =
842 DEFINE_MSGF("mgs_config_read reply ", 0,
843 sizeof(struct mgs_config_res),
844 lustre_swab_mgs_config_res, NULL);
845 EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
847 struct req_msg_field RMF_U32 =
848 DEFINE_MSGF("generic u32", 0,
849 sizeof(__u32), lustre_swab_generic_32s, NULL);
850 EXPORT_SYMBOL(RMF_U32);
852 struct req_msg_field RMF_SETINFO_VAL =
853 DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
854 EXPORT_SYMBOL(RMF_SETINFO_VAL);
856 struct req_msg_field RMF_GETINFO_KEY =
857 DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
858 EXPORT_SYMBOL(RMF_GETINFO_KEY);
860 struct req_msg_field RMF_GETINFO_VALLEN =
861 DEFINE_MSGF("getinfo_vallen", 0,
862 sizeof(__u32), lustre_swab_generic_32s, NULL);
863 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
865 struct req_msg_field RMF_GETINFO_VAL =
866 DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
867 EXPORT_SYMBOL(RMF_GETINFO_VAL);
869 struct req_msg_field RMF_SEQ_OPC =
870 DEFINE_MSGF("seq_query_opc", 0,
871 sizeof(__u32), lustre_swab_generic_32s, NULL);
872 EXPORT_SYMBOL(RMF_SEQ_OPC);
874 struct req_msg_field RMF_SEQ_RANGE =
875 DEFINE_MSGF("seq_query_range", 0,
876 sizeof(struct lu_seq_range),
877 lustre_swab_lu_seq_range, NULL);
878 EXPORT_SYMBOL(RMF_SEQ_RANGE);
880 struct req_msg_field RMF_FLD_OPC =
881 DEFINE_MSGF("fld_query_opc", 0,
882 sizeof(__u32), lustre_swab_generic_32s, NULL);
883 EXPORT_SYMBOL(RMF_FLD_OPC);
885 struct req_msg_field RMF_FLD_MDFLD =
886 DEFINE_MSGF("fld_query_mdfld", 0,
887 sizeof(struct lu_seq_range),
888 lustre_swab_lu_seq_range, NULL);
889 EXPORT_SYMBOL(RMF_FLD_MDFLD);
891 struct req_msg_field RMF_MDT_BODY =
892 DEFINE_MSGF("mdt_body", 0,
893 sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
894 EXPORT_SYMBOL(RMF_MDT_BODY);
896 struct req_msg_field RMF_OBD_QUOTACTL =
897 DEFINE_MSGF("obd_quotactl", 0,
898 sizeof(struct obd_quotactl),
899 lustre_swab_obd_quotactl, NULL);
900 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
902 struct req_msg_field RMF_QUOTA_BODY =
903 DEFINE_MSGF("quota_body", 0,
904 sizeof(struct quota_body), lustre_swab_quota_body, NULL);
905 EXPORT_SYMBOL(RMF_QUOTA_BODY);
907 struct req_msg_field RMF_MDT_EPOCH =
908 DEFINE_MSGF("mdt_ioepoch", 0,
909 sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
910 EXPORT_SYMBOL(RMF_MDT_EPOCH);
912 struct req_msg_field RMF_PTLRPC_BODY =
913 DEFINE_MSGF("ptlrpc_body", 0,
914 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
915 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
917 struct req_msg_field RMF_CLOSE_DATA =
918 DEFINE_MSGF("data_version", 0,
919 sizeof(struct close_data), lustre_swab_close_data, NULL);
920 EXPORT_SYMBOL(RMF_CLOSE_DATA);
922 struct req_msg_field RMF_OBD_STATFS =
923 DEFINE_MSGF("obd_statfs", 0,
924 sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
925 EXPORT_SYMBOL(RMF_OBD_STATFS);
927 struct req_msg_field RMF_SETINFO_KEY =
928 DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
929 EXPORT_SYMBOL(RMF_SETINFO_KEY);
931 struct req_msg_field RMF_NAME =
932 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
933 EXPORT_SYMBOL(RMF_NAME);
935 struct req_msg_field RMF_SYMTGT =
936 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
937 EXPORT_SYMBOL(RMF_SYMTGT);
939 struct req_msg_field RMF_TGTUUID =
940 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
942 EXPORT_SYMBOL(RMF_TGTUUID);
944 struct req_msg_field RMF_CLUUID =
945 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
947 EXPORT_SYMBOL(RMF_CLUUID);
949 struct req_msg_field RMF_STRING =
950 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
951 EXPORT_SYMBOL(RMF_STRING);
953 struct req_msg_field RMF_LLOGD_BODY =
954 DEFINE_MSGF("llogd_body", 0,
955 sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
956 EXPORT_SYMBOL(RMF_LLOGD_BODY);
958 struct req_msg_field RMF_LLOG_LOG_HDR =
959 DEFINE_MSGF("llog_log_hdr", 0,
960 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
961 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
963 struct req_msg_field RMF_LLOGD_CONN_BODY =
964 DEFINE_MSGF("llogd_conn_body", 0,
965 sizeof(struct llogd_conn_body),
966 lustre_swab_llogd_conn_body, NULL);
967 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
970 * connection handle received in MDS_CONNECT request.
972 * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
973 * that the client does not interpret at all.
975 struct req_msg_field RMF_CONN =
976 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
977 EXPORT_SYMBOL(RMF_CONN);
979 struct req_msg_field RMF_CONNECT_DATA =
981 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
982 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
983 sizeof(struct obd_connect_data),
985 /* For interoperability with 1.8 and 2.0 clients/servers.
986 * The RPC verification code allows larger RPC buffers, but not
987 * smaller buffers. Until we no longer need to keep compatibility
988 * with older servers/clients we can only check that the buffer
989 * size is at least as large as obd_connect_data_v1. That is not
990 * not in itself harmful, since the chance of just corrupting this
991 * field is low. See JIRA LU-16 for details. */
992 sizeof(struct obd_connect_data_v1),
994 lustre_swab_connect, NULL);
995 EXPORT_SYMBOL(RMF_CONNECT_DATA);
997 struct req_msg_field RMF_DLM_REQ =
998 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
999 sizeof(struct ldlm_request),
1000 lustre_swab_ldlm_request, NULL);
1001 EXPORT_SYMBOL(RMF_DLM_REQ);
1003 struct req_msg_field RMF_DLM_REP =
1004 DEFINE_MSGF("dlm_rep", 0,
1005 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
1006 EXPORT_SYMBOL(RMF_DLM_REP);
1008 struct req_msg_field RMF_LDLM_INTENT =
1009 DEFINE_MSGF("ldlm_intent", 0,
1010 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
1011 EXPORT_SYMBOL(RMF_LDLM_INTENT);
1013 struct req_msg_field RMF_DLM_LVB =
1014 DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
1015 EXPORT_SYMBOL(RMF_DLM_LVB);
1017 struct req_msg_field RMF_DLM_GL_DESC =
1018 DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
1019 lustre_swab_gl_desc, NULL);
1020 EXPORT_SYMBOL(RMF_DLM_GL_DESC);
1022 struct req_msg_field RMF_MDT_MD =
1023 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
1024 EXPORT_SYMBOL(RMF_MDT_MD);
1026 struct req_msg_field RMF_REC_REINT =
1027 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
1028 lustre_swab_mdt_rec_reint, NULL);
1029 EXPORT_SYMBOL(RMF_REC_REINT);
1031 /* FIXME: this length should be defined as a macro */
1032 struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
1034 EXPORT_SYMBOL(RMF_EADATA);
1036 struct req_msg_field RMF_EAVALS = DEFINE_MSGF("eavals", 0, -1, NULL, NULL);
1037 EXPORT_SYMBOL(RMF_EAVALS);
1039 struct req_msg_field RMF_ACL =
1040 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
1041 LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
1042 EXPORT_SYMBOL(RMF_ACL);
1044 /* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
1045 struct req_msg_field RMF_LOGCOOKIES =
1046 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
1047 sizeof(struct llog_cookie), NULL, NULL);
1048 EXPORT_SYMBOL(RMF_LOGCOOKIES);
1050 struct req_msg_field RMF_CAPA1 =
1051 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1052 lustre_swab_lustre_capa, NULL);
1053 EXPORT_SYMBOL(RMF_CAPA1);
1055 struct req_msg_field RMF_CAPA2 =
1056 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
1057 lustre_swab_lustre_capa, NULL);
1058 EXPORT_SYMBOL(RMF_CAPA2);
1060 struct req_msg_field RMF_LAYOUT_INTENT =
1061 DEFINE_MSGF("layout_intent", 0,
1062 sizeof(struct layout_intent), lustre_swab_layout_intent,
1064 EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
1067 * OST request field.
1069 struct req_msg_field RMF_OST_BODY =
1070 DEFINE_MSGF("ost_body", 0,
1071 sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
1072 EXPORT_SYMBOL(RMF_OST_BODY);
1074 struct req_msg_field RMF_OBD_IOOBJ =
1075 DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
1076 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
1077 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
1079 struct req_msg_field RMF_NIOBUF_REMOTE =
1080 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
1081 sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
1083 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
1085 struct req_msg_field RMF_RCS =
1086 DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1087 lustre_swab_generic_32s, dump_rcs);
1088 EXPORT_SYMBOL(RMF_RCS);
1090 struct req_msg_field RMF_EAVALS_LENS =
1091 DEFINE_MSGF("eavals_lens", RMF_F_STRUCT_ARRAY, sizeof(__u32),
1092 lustre_swab_generic_32s, NULL);
1093 EXPORT_SYMBOL(RMF_EAVALS_LENS);
1095 struct req_msg_field RMF_OBD_ID =
1096 DEFINE_MSGF("obd_id", 0,
1097 sizeof(obd_id), lustre_swab_ost_last_id, NULL);
1098 EXPORT_SYMBOL(RMF_OBD_ID);
1100 struct req_msg_field RMF_FID =
1101 DEFINE_MSGF("fid", 0,
1102 sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
1103 EXPORT_SYMBOL(RMF_FID);
1105 struct req_msg_field RMF_OST_ID =
1106 DEFINE_MSGF("ost_id", 0,
1107 sizeof(struct ost_id), lustre_swab_ost_id, NULL);
1108 EXPORT_SYMBOL(RMF_OST_ID);
1110 struct req_msg_field RMF_FIEMAP_KEY =
1111 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
1112 lustre_swab_fiemap, NULL);
1113 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
1115 struct req_msg_field RMF_FIEMAP_VAL =
1116 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
1117 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
1119 struct req_msg_field RMF_IDX_INFO =
1120 DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
1121 lustre_swab_idx_info, NULL);
1122 EXPORT_SYMBOL(RMF_IDX_INFO);
1123 struct req_msg_field RMF_HSM_USER_STATE =
1124 DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
1125 lustre_swab_hsm_user_state, NULL);
1126 EXPORT_SYMBOL(RMF_HSM_USER_STATE);
1128 struct req_msg_field RMF_HSM_STATE_SET =
1129 DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
1130 lustre_swab_hsm_state_set, NULL);
1131 EXPORT_SYMBOL(RMF_HSM_STATE_SET);
1133 struct req_msg_field RMF_MDS_HSM_PROGRESS =
1134 DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
1135 lustre_swab_hsm_progress_kernel, NULL);
1136 EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
1138 struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
1139 DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
1140 lustre_swab_hsm_current_action, NULL);
1141 EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
1143 struct req_msg_field RMF_MDS_HSM_USER_ITEM =
1144 DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
1145 sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
1147 EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
1149 struct req_msg_field RMF_MDS_HSM_ARCHIVE =
1150 DEFINE_MSGF("hsm_archive", 0,
1151 sizeof(__u32), lustre_swab_generic_32s, NULL);
1152 EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
1154 struct req_msg_field RMF_MDS_HSM_REQUEST =
1155 DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
1156 lustre_swab_hsm_request, NULL);
1157 EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
1159 struct req_msg_field RMF_UPDATE = DEFINE_MSGF("update", 0, -1,
1160 lustre_swab_update_buf, NULL);
1161 EXPORT_SYMBOL(RMF_UPDATE);
1163 struct req_msg_field RMF_UPDATE_REPLY = DEFINE_MSGF("update_reply", 0, -1,
1164 lustre_swab_update_reply_buf,
1166 EXPORT_SYMBOL(RMF_UPDATE_REPLY);
1168 struct req_msg_field RMF_SWAP_LAYOUTS =
1169 DEFINE_MSGF("swap_layouts", 0, sizeof(struct mdc_swap_layouts),
1170 lustre_swab_swap_layouts, NULL);
1171 EXPORT_SYMBOL(RMF_SWAP_LAYOUTS);
1177 const char *rf_name;
1181 const struct req_msg_field **d;
1182 } rf_fields[RCL_NR];
1185 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
1199 #define DEFINE_REQ_FMT0(name, client, server) \
1200 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
1202 struct req_format RQF_OBD_PING =
1203 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
1204 EXPORT_SYMBOL(RQF_OBD_PING);
1206 struct req_format RQF_OBD_SET_INFO =
1207 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
1208 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
1210 /* Read index file through the network */
1211 struct req_format RQF_OBD_IDX_READ =
1212 DEFINE_REQ_FMT0("OBD_IDX_READ",
1213 obd_idx_read_client, obd_idx_read_server);
1214 EXPORT_SYMBOL(RQF_OBD_IDX_READ);
1216 struct req_format RQF_SEC_CTX =
1217 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
1218 EXPORT_SYMBOL(RQF_SEC_CTX);
1220 struct req_format RQF_MGS_TARGET_REG =
1221 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
1222 mgs_target_info_only);
1223 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
1225 struct req_format RQF_MGS_SET_INFO =
1226 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
1228 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
1230 struct req_format RQF_MGS_CONFIG_READ =
1231 DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
1232 mgs_config_read_server);
1233 EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
1235 struct req_format RQF_SEQ_QUERY =
1236 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
1237 EXPORT_SYMBOL(RQF_SEQ_QUERY);
1239 struct req_format RQF_FLD_QUERY =
1240 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
1241 EXPORT_SYMBOL(RQF_FLD_QUERY);
1243 struct req_format RQF_LOG_CANCEL =
1244 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
1245 EXPORT_SYMBOL(RQF_LOG_CANCEL);
1247 struct req_format RQF_MDS_QUOTACHECK =
1248 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
1249 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
1251 struct req_format RQF_OST_QUOTACHECK =
1252 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
1253 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
1255 struct req_format RQF_MDS_QUOTACTL =
1256 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
1257 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
1259 struct req_format RQF_OST_QUOTACTL =
1260 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
1261 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
1263 struct req_format RQF_QC_CALLBACK =
1264 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
1265 EXPORT_SYMBOL(RQF_QC_CALLBACK);
1267 struct req_format RQF_QUOTA_DQACQ =
1268 DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
1269 EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
1271 struct req_format RQF_LDLM_INTENT_QUOTA =
1272 DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
1273 ldlm_intent_quota_client,
1274 ldlm_intent_quota_server);
1275 EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
1277 struct req_format RQF_MDS_GETSTATUS =
1278 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
1279 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
1281 struct req_format RQF_MDS_STATFS =
1282 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
1283 EXPORT_SYMBOL(RQF_MDS_STATFS);
1285 struct req_format RQF_MDS_SYNC =
1286 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
1287 EXPORT_SYMBOL(RQF_MDS_SYNC);
1289 struct req_format RQF_MDS_GETATTR =
1290 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
1291 EXPORT_SYMBOL(RQF_MDS_GETATTR);
1293 struct req_format RQF_MDS_GETXATTR =
1294 DEFINE_REQ_FMT0("MDS_GETXATTR",
1295 mds_getxattr_client, mds_getxattr_server);
1296 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
1298 struct req_format RQF_MDS_GETATTR_NAME =
1299 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
1300 mds_getattr_name_client, mds_getattr_server);
1301 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
1303 struct req_format RQF_MDS_REINT =
1304 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
1305 EXPORT_SYMBOL(RQF_MDS_REINT);
1307 struct req_format RQF_MDS_REINT_CREATE =
1308 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
1309 mds_reint_create_client, mdt_body_capa);
1310 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1312 struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1313 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1314 mds_reint_create_rmt_acl_client, mdt_body_capa);
1315 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1317 struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1318 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1319 mds_reint_create_slave_client, mdt_body_capa);
1320 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1322 struct req_format RQF_MDS_REINT_CREATE_SYM =
1323 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1324 mds_reint_create_sym_client, mdt_body_capa);
1325 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1327 struct req_format RQF_MDS_REINT_OPEN =
1328 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1329 mds_reint_open_client, mds_reint_open_server);
1330 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1332 struct req_format RQF_MDS_REINT_UNLINK =
1333 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1334 mds_last_unlink_server);
1335 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1337 struct req_format RQF_MDS_REINT_LINK =
1338 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1339 mds_reint_link_client, mdt_body_only);
1340 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1342 struct req_format RQF_MDS_REINT_RENAME =
1343 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1344 mds_last_unlink_server);
1345 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1347 struct req_format RQF_MDS_REINT_SETATTR =
1348 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1349 mds_reint_setattr_client, mds_setattr_server);
1350 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1352 struct req_format RQF_MDS_REINT_SETXATTR =
1353 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1354 mds_reint_setxattr_client, mdt_body_only);
1355 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1357 struct req_format RQF_MDS_CONNECT =
1358 DEFINE_REQ_FMT0("MDS_CONNECT",
1359 obd_connect_client, obd_connect_server);
1360 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1362 struct req_format RQF_MDS_DISCONNECT =
1363 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1364 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1366 struct req_format RQF_MDS_GET_INFO =
1367 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1368 mds_getinfo_server);
1369 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1371 struct req_format RQF_UPDATE_OBJ =
1372 DEFINE_REQ_FMT0("OBJECT_UPDATE_OBJ", mds_update_client,
1374 EXPORT_SYMBOL(RQF_UPDATE_OBJ);
1376 struct req_format RQF_LDLM_ENQUEUE =
1377 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1378 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1379 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1381 struct req_format RQF_LDLM_ENQUEUE_LVB =
1382 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1383 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1384 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1386 struct req_format RQF_LDLM_CONVERT =
1387 DEFINE_REQ_FMT0("LDLM_CONVERT",
1388 ldlm_enqueue_client, ldlm_enqueue_server);
1389 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1391 struct req_format RQF_LDLM_CANCEL =
1392 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1393 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1395 struct req_format RQF_LDLM_CALLBACK =
1396 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1397 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1399 struct req_format RQF_LDLM_CP_CALLBACK =
1400 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1401 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1403 struct req_format RQF_LDLM_BL_CALLBACK =
1404 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1405 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1407 struct req_format RQF_LDLM_GL_CALLBACK =
1408 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1409 ldlm_gl_callback_server);
1410 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1412 struct req_format RQF_LDLM_GL_DESC_CALLBACK =
1413 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
1414 ldlm_gl_callback_server);
1415 EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
1417 struct req_format RQF_LDLM_INTENT_BASIC =
1418 DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
1419 ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
1420 EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
1422 struct req_format RQF_LDLM_INTENT =
1423 DEFINE_REQ_FMT0("LDLM_INTENT",
1424 ldlm_intent_client, ldlm_intent_server);
1425 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1427 struct req_format RQF_LDLM_INTENT_LAYOUT =
1428 DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
1429 ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
1430 EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
1432 struct req_format RQF_LDLM_INTENT_GETATTR =
1433 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1434 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1435 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1437 struct req_format RQF_LDLM_INTENT_OPEN =
1438 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1439 ldlm_intent_open_client, ldlm_intent_open_server);
1440 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1442 struct req_format RQF_LDLM_INTENT_CREATE =
1443 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1444 ldlm_intent_create_client, ldlm_intent_getattr_server);
1445 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1447 struct req_format RQF_LDLM_INTENT_UNLINK =
1448 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1449 ldlm_intent_unlink_client, ldlm_intent_server);
1450 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1452 struct req_format RQF_LDLM_INTENT_GETXATTR =
1453 DEFINE_REQ_FMT0("LDLM_INTENT_GETXATTR",
1454 ldlm_intent_getxattr_client,
1455 ldlm_intent_getxattr_server);
1456 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETXATTR);
1458 struct req_format RQF_MDS_CLOSE =
1459 DEFINE_REQ_FMT0("MDS_CLOSE",
1460 mdt_close_client, mds_last_unlink_server);
1461 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1463 struct req_format RQF_MDS_RELEASE_CLOSE =
1464 DEFINE_REQ_FMT0("MDS_CLOSE",
1465 mdt_release_close_client, mds_last_unlink_server);
1466 EXPORT_SYMBOL(RQF_MDS_RELEASE_CLOSE);
1468 struct req_format RQF_MDS_PIN =
1469 DEFINE_REQ_FMT0("MDS_PIN",
1470 mdt_body_capa, mdt_body_only);
1471 EXPORT_SYMBOL(RQF_MDS_PIN);
1473 struct req_format RQF_MDS_UNPIN =
1474 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1475 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1477 struct req_format RQF_MDS_DONE_WRITING =
1478 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1479 mdt_close_client, mdt_body_only);
1480 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1482 struct req_format RQF_MDS_READPAGE =
1483 DEFINE_REQ_FMT0("MDS_READPAGE",
1484 mdt_body_capa, mdt_body_only);
1485 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1487 struct req_format RQF_MDS_HSM_ACTION =
1488 DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
1489 EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
1491 struct req_format RQF_MDS_HSM_PROGRESS =
1492 DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
1493 EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
1495 struct req_format RQF_MDS_HSM_CT_REGISTER =
1496 DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
1497 EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
1499 struct req_format RQF_MDS_HSM_CT_UNREGISTER =
1500 DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", mdt_hsm_ct_unregister, empty);
1501 EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
1503 struct req_format RQF_MDS_HSM_STATE_GET =
1504 DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
1505 mdt_body_capa, mdt_hsm_state_get_server);
1506 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
1508 struct req_format RQF_MDS_HSM_STATE_SET =
1509 DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
1510 EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
1512 struct req_format RQF_MDS_HSM_REQUEST =
1513 DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
1514 EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
1516 struct req_format RQF_MDS_SWAP_LAYOUTS =
1517 DEFINE_REQ_FMT0("MDS_SWAP_LAYOUTS",
1518 mdt_swap_layouts, empty);
1519 EXPORT_SYMBOL(RQF_MDS_SWAP_LAYOUTS);
1521 /* This is for split */
1522 struct req_format RQF_MDS_WRITEPAGE =
1523 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1524 mdt_body_capa, mdt_body_only);
1525 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1527 struct req_format RQF_MDS_IS_SUBDIR =
1528 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1529 mdt_body_only, mdt_body_only);
1530 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1532 struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1533 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1534 llog_origin_handle_create_client, llogd_body_only);
1535 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1537 struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1538 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1539 llogd_body_only, llogd_body_only);
1540 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1542 struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1543 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1544 llogd_body_only, llog_origin_handle_next_block_server);
1545 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1547 struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1548 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1549 llogd_body_only, llog_origin_handle_next_block_server);
1550 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1552 struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1553 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1554 llogd_body_only, llog_log_hdr_only);
1555 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1557 struct req_format RQF_LLOG_ORIGIN_CONNECT =
1558 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1559 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1561 struct req_format RQF_CONNECT =
1562 DEFINE_REQ_FMT0("CONNECT", obd_connect_client, obd_connect_server);
1563 EXPORT_SYMBOL(RQF_CONNECT);
1565 struct req_format RQF_OST_CONNECT =
1566 DEFINE_REQ_FMT0("OST_CONNECT",
1567 obd_connect_client, obd_connect_server);
1568 EXPORT_SYMBOL(RQF_OST_CONNECT);
1570 struct req_format RQF_OST_DISCONNECT =
1571 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1572 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1574 struct req_format RQF_OST_GETATTR =
1575 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1576 EXPORT_SYMBOL(RQF_OST_GETATTR);
1578 struct req_format RQF_OST_SETATTR =
1579 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1580 EXPORT_SYMBOL(RQF_OST_SETATTR);
1582 struct req_format RQF_OST_CREATE =
1583 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1584 EXPORT_SYMBOL(RQF_OST_CREATE);
1586 struct req_format RQF_OST_PUNCH =
1587 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1588 EXPORT_SYMBOL(RQF_OST_PUNCH);
1590 struct req_format RQF_OST_SYNC =
1591 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1592 EXPORT_SYMBOL(RQF_OST_SYNC);
1594 struct req_format RQF_OST_DESTROY =
1595 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1596 EXPORT_SYMBOL(RQF_OST_DESTROY);
1598 struct req_format RQF_OST_BRW_READ =
1599 DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
1600 EXPORT_SYMBOL(RQF_OST_BRW_READ);
1602 struct req_format RQF_OST_BRW_WRITE =
1603 DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
1604 EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
1606 struct req_format RQF_OST_STATFS =
1607 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1608 EXPORT_SYMBOL(RQF_OST_STATFS);
1610 struct req_format RQF_OST_SET_GRANT_INFO =
1611 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
1613 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1615 struct req_format RQF_OST_GET_INFO_GENERIC =
1616 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1617 ost_get_info_generic_server);
1618 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1620 struct req_format RQF_OST_GET_INFO_LAST_ID =
1621 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1622 ost_get_last_id_server);
1623 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1625 struct req_format RQF_OST_GET_INFO_LAST_FID =
1626 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
1627 ost_get_last_fid_server);
1628 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
1630 struct req_format RQF_OST_SET_INFO_LAST_FID =
1631 DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
1633 EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
1635 struct req_format RQF_OST_GET_INFO_FIEMAP =
1636 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1637 ost_get_fiemap_server);
1638 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1640 #if !defined(__REQ_LAYOUT_USER__)
1642 /* Convenience macro */
1643 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1646 * Initializes the capsule abstraction by computing and setting the \a rf_idx
1647 * field of RQFs and the \a rmf_offset field of RMFs.
1649 int req_layout_init(void)
1654 struct req_format *rf = NULL;
1656 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1657 rf = req_formats[i];
1659 for (j = 0; j < RCL_NR; ++j) {
1660 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1661 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1662 struct req_msg_field *field;
1664 field = (typeof(field))rf->rf_fields[j].d[k];
1665 LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
1666 || field->rmf_size > 0);
1667 LASSERT(field->rmf_offset[i][j] == 0);
1669 * k + 1 to detect unused format/field
1672 field->rmf_offset[i][j] = k + 1;
1678 EXPORT_SYMBOL(req_layout_init);
1680 void req_layout_fini(void)
1683 EXPORT_SYMBOL(req_layout_fini);
1686 * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
1688 * Actual/expected field sizes are set elsewhere in functions in this file:
1689 * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
1690 * req_capsule_msg_size(). The \a rc_area information is used by.
1691 * ptlrpc_request_set_replen().
1693 void req_capsule_init_area(struct req_capsule *pill)
1697 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1698 pill->rc_area[RCL_CLIENT][i] = -1;
1699 pill->rc_area[RCL_SERVER][i] = -1;
1702 EXPORT_SYMBOL(req_capsule_init_area);
1705 * Initialize a pill.
1707 * The \a location indicates whether the caller is executing on the client side
1708 * (RCL_CLIENT) or server side (RCL_SERVER)..
1710 void req_capsule_init(struct req_capsule *pill,
1711 struct ptlrpc_request *req,
1712 enum req_location location)
1714 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1717 * Today all capsules are embedded in ptlrpc_request structs,
1718 * but just in case that ever isn't the case, we don't reach
1719 * into req unless req != NULL and pill is the one embedded in
1722 * The req->rq_pill_init flag makes it safe to initialize a pill
1723 * twice, which might happen in the OST paths as a result of the
1724 * high-priority RPC queue getting peeked at before ost_handle()
1725 * handles an OST RPC.
1727 if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
1730 memset(pill, 0, sizeof(*pill));
1732 pill->rc_loc = location;
1733 req_capsule_init_area(pill);
1735 if (req != NULL && pill == &req->rq_pill)
1736 req->rq_pill_init = 1;
1738 EXPORT_SYMBOL(req_capsule_init);
1740 void req_capsule_fini(struct req_capsule *pill)
1743 EXPORT_SYMBOL(req_capsule_fini);
1745 static int __req_format_is_sane(const struct req_format *fmt)
1748 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1749 req_formats[fmt->rf_idx] == fmt;
1752 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1753 enum req_location loc)
1755 struct ptlrpc_request *req;
1758 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1762 * Set the format (\a fmt) of a \a pill; format changes are not allowed here
1763 * (see req_capsule_extend()).
1765 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1767 LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
1768 LASSERT(__req_format_is_sane(fmt));
1772 EXPORT_SYMBOL(req_capsule_set);
1775 * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
1778 * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1779 * variable-sized fields. The field sizes come from the declared \a rmf_size
1780 * field of a \a pill's \a rc_fmt's RMF's.
1782 int req_capsule_filled_sizes(struct req_capsule *pill,
1783 enum req_location loc)
1785 const struct req_format *fmt = pill->rc_fmt;
1788 LASSERT(fmt != NULL);
1790 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1791 if (pill->rc_area[loc][i] == -1) {
1792 pill->rc_area[loc][i] =
1793 fmt->rf_fields[loc].d[i]->rmf_size;
1794 if (pill->rc_area[loc][i] == -1) {
1796 * Skip the following fields.
1798 * If this LASSERT() trips then you're missing a
1799 * call to req_capsule_set_size().
1801 LASSERT(loc != RCL_SERVER);
1808 EXPORT_SYMBOL(req_capsule_filled_sizes);
1811 * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
1813 * This function uses the \a pill's \a rc_area as filled in by
1814 * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
1817 int req_capsule_server_pack(struct req_capsule *pill)
1819 const struct req_format *fmt;
1823 LASSERT(pill->rc_loc == RCL_SERVER);
1825 LASSERT(fmt != NULL);
1827 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1828 rc = lustre_pack_reply(pill->rc_req, count,
1829 pill->rc_area[RCL_SERVER], NULL);
1831 DEBUG_REQ(D_ERROR, pill->rc_req,
1832 "Cannot pack %d fields in format `%s': ",
1833 count, fmt->rf_name);
1837 EXPORT_SYMBOL(req_capsule_server_pack);
1840 * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
1841 * corresponding to the given RMF (\a field).
1843 static int __req_capsule_offset(const struct req_capsule *pill,
1844 const struct req_msg_field *field,
1845 enum req_location loc)
1849 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1850 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1851 pill->rc_fmt->rf_name,
1852 field->rmf_name, offset, loc);
1855 LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
1860 * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
1865 swabber_dumper_helper(struct req_capsule *pill,
1866 const struct req_msg_field *field,
1867 enum req_location loc,
1869 void *value, int len, int dump, void (*swabber)(void *))
1875 int inout = loc == RCL_CLIENT;
1877 swabber = swabber ?: field->rmf_swabber;
1879 if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
1880 swabber != NULL && value != NULL)
1885 if (!field->rmf_dumper)
1888 if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
1890 CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
1891 do_swab ? "unswabbed " : "", field->rmf_name);
1892 field->rmf_dumper(value);
1897 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1899 CDEBUG(D_RPCTRACE, "Dump of swabbed field %s "
1900 "follows\n", field->rmf_name);
1901 field->rmf_dumper(value);
1908 * We're swabbing an array; swabber() swabs a single array element, so
1909 * swab every element.
1911 LASSERT((len % field->rmf_size) == 0);
1912 for (p = value, i = 0, n = len / field->rmf_size;
1914 i++, p += field->rmf_size) {
1916 CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, "
1917 "element %d follows\n",
1918 do_swab ? "unswabbed " : "", field->rmf_name, i);
1919 field->rmf_dumper(p);
1925 CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, "
1926 "element %d follows\n", field->rmf_name, i);
1927 field->rmf_dumper(value);
1931 ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
1935 * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
1936 * corresponding to the given RMF (\a field).
1938 * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
1939 * then the \a rmf_swabber from the RMF will be used. Soon there will be no
1940 * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
1941 * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
1942 * element of the array swabbed.
1944 static void *__req_capsule_get(struct req_capsule *pill,
1945 const struct req_msg_field *field,
1946 enum req_location loc,
1947 void (*swabber)(void *),
1950 const struct req_format *fmt;
1951 struct lustre_msg *msg;
1956 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1958 static const char *rcl_names[RCL_NR] = {
1959 [RCL_CLIENT] = "client",
1960 [RCL_SERVER] = "server"
1963 LASSERT(pill != NULL);
1964 LASSERT(pill != LP_POISON);
1966 LASSERT(fmt != NULL);
1967 LASSERT(fmt != LP_POISON);
1968 LASSERT(__req_format_is_sane(fmt));
1970 offset = __req_capsule_offset(pill, field, loc);
1972 msg = __req_msg(pill, loc);
1973 LASSERT(msg != NULL);
1975 getter = (field->rmf_flags & RMF_F_STRING) ?
1976 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1978 if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
1980 * We've already asserted that field->rmf_size > 0 in
1981 * req_layout_init().
1983 len = lustre_msg_buflen(msg, offset);
1984 if ((len % field->rmf_size) != 0) {
1985 CERROR("%s: array field size mismatch "
1986 "%d modulo %d != 0 (%d)\n",
1987 field->rmf_name, len, field->rmf_size, loc);
1990 } else if (pill->rc_area[loc][offset] != -1) {
1991 len = pill->rc_area[loc][offset];
1993 len = max(field->rmf_size, 0);
1995 value = getter(msg, offset, len);
1997 if (value == NULL) {
1998 DEBUG_REQ(D_ERROR, pill->rc_req,
1999 "Wrong buffer for field `%s' (%d of %d) "
2000 "in format `%s': %d vs. %d (%s)\n",
2001 field->rmf_name, offset, lustre_msg_bufcount(msg),
2002 fmt->rf_name, lustre_msg_buflen(msg, offset), len,
2005 swabber_dumper_helper(pill, field, loc, offset, value, len,
2013 * Dump a request and/or reply
2015 void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
2017 const struct req_format *fmt;
2018 const struct req_msg_field *field;
2024 DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
2025 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
2026 field = FMT_FIELD(fmt, loc, i);
2027 if (field->rmf_dumper == NULL) {
2029 * FIXME Add a default hex dumper for fields that don't
2030 * have a specific dumper
2032 len = req_capsule_get_size(pill, field, loc);
2033 CDEBUG(D_RPCTRACE, "Field %s has no dumper function;"
2034 "field size is %d\n", field->rmf_name, len);
2036 /* It's the dumping side-effect that we're interested in */
2037 (void) __req_capsule_get(pill, field, loc, NULL, 1);
2040 CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
2046 void req_capsule_client_dump(struct req_capsule *pill)
2048 __req_capsule_dump(pill, RCL_CLIENT);
2050 EXPORT_SYMBOL(req_capsule_client_dump);
2055 void req_capsule_server_dump(struct req_capsule *pill)
2057 __req_capsule_dump(pill, RCL_SERVER);
2059 EXPORT_SYMBOL(req_capsule_server_dump);
2062 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
2063 * buffer corresponding to the given RMF (\a field) of a \a pill.
2065 void *req_capsule_client_get(struct req_capsule *pill,
2066 const struct req_msg_field *field)
2068 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2070 EXPORT_SYMBOL(req_capsule_client_get);
2073 * Same as req_capsule_client_get(), but with a \a swabber argument.
2075 * Currently unused; will be removed when req_capsule_server_swab_get() is
2078 void *req_capsule_client_swab_get(struct req_capsule *pill,
2079 const struct req_msg_field *field,
2082 return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
2084 EXPORT_SYMBOL(req_capsule_client_swab_get);
2087 * Utility that combines req_capsule_set_size() and req_capsule_client_get().
2089 * First the \a pill's request \a field's size is set (\a rc_area) using
2090 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2093 void *req_capsule_client_sized_get(struct req_capsule *pill,
2094 const struct req_msg_field *field,
2097 req_capsule_set_size(pill, field, RCL_CLIENT, len);
2098 return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
2100 EXPORT_SYMBOL(req_capsule_client_sized_get);
2103 * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
2104 * buffer corresponding to the given RMF (\a field) of a \a pill.
2106 void *req_capsule_server_get(struct req_capsule *pill,
2107 const struct req_msg_field *field)
2109 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2111 EXPORT_SYMBOL(req_capsule_server_get);
2114 * Same as req_capsule_server_get(), but with a \a swabber argument.
2116 * Ideally all swabbing should be done pursuant to RMF definitions, with no
2117 * swabbing done outside this capsule abstraction.
2119 void *req_capsule_server_swab_get(struct req_capsule *pill,
2120 const struct req_msg_field *field,
2123 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2125 EXPORT_SYMBOL(req_capsule_server_swab_get);
2128 * Utility that combines req_capsule_set_size() and req_capsule_server_get().
2130 * First the \a pill's request \a field's size is set (\a rc_area) using
2131 * req_capsule_set_size() with the given \a len. Then the actual buffer is
2134 void *req_capsule_server_sized_get(struct req_capsule *pill,
2135 const struct req_msg_field *field,
2138 req_capsule_set_size(pill, field, RCL_SERVER, len);
2139 return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
2141 EXPORT_SYMBOL(req_capsule_server_sized_get);
2143 void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
2144 const struct req_msg_field *field,
2145 int len, void *swabber)
2147 req_capsule_set_size(pill, field, RCL_SERVER, len);
2148 return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
2150 EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
2153 * Returns the buffer of a \a pill corresponding to the given \a field from the
2154 * request (if the caller is executing on the server-side) or reply (if the
2155 * caller is executing on the client-side).
2157 * This function convienient for use is code that could be executed on the
2158 * client and server alike.
2160 const void *req_capsule_other_get(struct req_capsule *pill,
2161 const struct req_msg_field *field)
2163 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
2165 EXPORT_SYMBOL(req_capsule_other_get);
2168 * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
2169 * field of the given \a pill.
2171 * This function must be used when constructing variable sized fields of a
2174 void req_capsule_set_size(struct req_capsule *pill,
2175 const struct req_msg_field *field,
2176 enum req_location loc, int size)
2178 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2180 if ((size != field->rmf_size) &&
2181 (field->rmf_size != -1) &&
2182 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
2184 if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2185 (size % field->rmf_size != 0)) {
2186 CERROR("%s: array field size mismatch "
2187 "%d %% %d != 0 (%d)\n",
2188 field->rmf_name, size, field->rmf_size, loc);
2190 } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
2191 size < field->rmf_size) {
2192 CERROR("%s: field size mismatch %d != %d (%d)\n",
2193 field->rmf_name, size, field->rmf_size, loc);
2198 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
2200 EXPORT_SYMBOL(req_capsule_set_size);
2203 * Return the actual PTLRPC buffer length of a request or reply (\a loc)
2204 * for the given \a pill's given \a field.
2206 * NB: this function doesn't correspond with req_capsule_set_size(), which
2207 * actually sets the size in pill.rc_area[loc][offset], but this function
2208 * returns the message buflen[offset], maybe we should use another name.
2210 int req_capsule_get_size(const struct req_capsule *pill,
2211 const struct req_msg_field *field,
2212 enum req_location loc)
2214 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2216 return lustre_msg_buflen(__req_msg(pill, loc),
2217 __req_capsule_offset(pill, field, loc));
2219 EXPORT_SYMBOL(req_capsule_get_size);
2222 * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
2223 * given \a pill's request or reply (\a loc) given the field size recorded in
2224 * the \a pill's rc_area.
2226 * See also req_capsule_set_size().
2228 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
2230 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
2231 pill->rc_fmt->rf_fields[loc].nr,
2232 pill->rc_area[loc]);
2236 * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
2237 * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
2238 * PTLRPC request or reply given only an RQF (\a fmt).
2240 * This function should not be used for formats which contain variable size
2243 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
2244 enum req_location loc)
2249 * This function should probably LASSERT() that fmt has no fields with
2250 * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
2251 * elements in the array there will ultimately be, but then, we could
2252 * assume that there will be at least one element, and that's just what
2255 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
2259 for (; i < fmt->rf_fields[loc].nr; ++i)
2260 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
2261 size += cfs_size_round(fmt->rf_fields[loc].d[i]->
2267 * Changes the format of an RPC.
2269 * The pill must already have been initialized, which means that it already has
2270 * a request format. The new format \a fmt must be an extension of the pill's
2271 * old format. Specifically: the new format must have as many request and reply
2272 * fields as the old one, and all fields shared by the old and new format must
2273 * be at least as large in the new format.
2275 * The new format's fields may be of different "type" than the old format, but
2276 * only for fields that are "opaque" blobs: fields which have a) have no
2277 * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
2278 * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
2279 * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
2280 * according to the key field. When the value, according to the key, contains a
2281 * structure (or array thereof) to be swabbed, the format should be changed to
2282 * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
2285 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
2290 const struct req_format *old;
2292 LASSERT(pill->rc_fmt != NULL);
2293 LASSERT(__req_format_is_sane(fmt));
2297 * Sanity checking...
2299 for (i = 0; i < RCL_NR; ++i) {
2300 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
2301 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
2302 const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
2304 /* "opaque" fields can be transmogrified */
2305 if (ofield->rmf_swabber == NULL &&
2306 (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
2307 (ofield->rmf_size == -1 ||
2308 ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
2310 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
2313 * Last field in old format can be shorter than in new.
2315 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
2316 FMT_FIELD(old, i, j)->rmf_size);
2321 EXPORT_SYMBOL(req_capsule_extend);
2324 * This function returns a non-zero value if the given \a field is present in
2325 * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
2328 int req_capsule_has_field(const struct req_capsule *pill,
2329 const struct req_msg_field *field,
2330 enum req_location loc)
2332 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2334 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
2336 EXPORT_SYMBOL(req_capsule_has_field);
2339 * Returns a non-zero value if the given \a field is present in the given \a
2340 * pill's PTLRPC request or reply (\a loc), else it returns 0.
2342 int req_capsule_field_present(const struct req_capsule *pill,
2343 const struct req_msg_field *field,
2344 enum req_location loc)
2348 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
2349 LASSERT(req_capsule_has_field(pill, field, loc));
2351 offset = __req_capsule_offset(pill, field, loc);
2352 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
2354 EXPORT_SYMBOL(req_capsule_field_present);
2357 * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
2358 * request or reply (\a loc).
2360 * This is not the opposite of req_capsule_extend().
2362 void req_capsule_shrink(struct req_capsule *pill,
2363 const struct req_msg_field *field,
2364 unsigned int newlen,
2365 enum req_location loc)
2367 const struct req_format *fmt;
2368 struct lustre_msg *msg;
2373 LASSERT(fmt != NULL);
2374 LASSERT(__req_format_is_sane(fmt));
2375 LASSERT(req_capsule_has_field(pill, field, loc));
2376 LASSERT(req_capsule_field_present(pill, field, loc));
2378 offset = __req_capsule_offset(pill, field, loc);
2380 msg = __req_msg(pill, loc);
2381 len = lustre_msg_buflen(msg, offset);
2382 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
2383 fmt->rf_name, field->rmf_name, len, newlen);
2385 if (loc == RCL_CLIENT)
2386 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
2389 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
2392 EXPORT_SYMBOL(req_capsule_shrink);
2394 int req_capsule_server_grow(struct req_capsule *pill,
2395 const struct req_msg_field *field,
2396 unsigned int newlen)
2398 struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
2400 int offset, len, rc;
2402 LASSERT(pill->rc_fmt != NULL);
2403 LASSERT(__req_format_is_sane(pill->rc_fmt));
2404 LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
2405 LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
2407 len = req_capsule_get_size(pill, field, RCL_SERVER);
2408 offset = __req_capsule_offset(pill, field, RCL_SERVER);
2409 if (pill->rc_req->rq_repbuf_len >=
2410 lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
2411 CERROR("Inplace repack might be done\n");
2413 pill->rc_req->rq_reply_state = NULL;
2414 req_capsule_set_size(pill, field, RCL_SERVER, newlen);
2415 rc = req_capsule_server_pack(pill);
2417 /* put old rs back, the caller will decide what to do */
2418 pill->rc_req->rq_reply_state = rs;
2421 nrs = pill->rc_req->rq_reply_state;
2422 /* Now we need only buffers, copy first chunk */
2423 to = lustre_msg_buf(nrs->rs_msg, 0, 0);
2424 from = lustre_msg_buf(rs->rs_msg, 0, 0);
2425 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
2426 memcpy(to, from, len);
2427 /* check if we have tail and copy it too */
2428 if (rs->rs_msg->lm_bufcount > offset + 1) {
2429 to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
2430 from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
2431 offset = rs->rs_msg->lm_bufcount - 1;
2432 len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
2433 cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
2434 memcpy(to, from, len);
2436 /* drop old reply if everything is fine */
2437 if (rs->rs_difficult) {
2441 nrs->rs_difficult = 1;
2442 nrs->rs_no_ack = rs->rs_no_ack;
2443 for (i = 0; i < rs->rs_nlocks; i++) {
2444 nrs->rs_locks[i] = rs->rs_locks[i];
2445 nrs->rs_modes[i] = rs->rs_modes[i];
2449 rs->rs_difficult = 0;
2452 ptlrpc_rs_decref(rs);
2455 EXPORT_SYMBOL(req_capsule_server_grow);
2456 /* __REQ_LAYOUT_USER__ */