--- /dev/null
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/ptlrpc/layout.c
+ *
+ * Lustre Metadata Target (mdt) request handler
+ *
+ * Author: Nikita Danilov <nikita@clusterfs.com>
+ */
+/*
+ * This file contains the "capsule/pill" abstraction layered above PTLRPC.
+ *
+ * Every struct ptlrpc_request contains a "pill", which points to a description
+ * of the format that the request conforms to.
+ */
+
+#if !defined(__REQ_LAYOUT_USER__)
+
+#define DEBUG_SUBSYSTEM S_RPC
+
+#include <linux/module.h>
+
+/* LUSTRE_VERSION_CODE */
+#include "../include/lustre_ver.h"
+
+#include "../include/obd_support.h"
+/* lustre_swab_mdt_body */
+#include "../include/lustre/lustre_idl.h"
+/* obd2cli_tgt() (required by DEBUG_REQ()) */
+#include "../include/obd.h"
+
+/* __REQ_LAYOUT_USER__ */
+#endif
+/* struct ptlrpc_request, lustre_msg* */
+#include "../include/lustre_req_layout.h"
+#include "../include/lustre_acl.h"
+#include "../include/lustre_debug.h"
+
+/*
+ * RQFs (see below) refer to two struct req_msg_field arrays describing the
+ * client request and server reply, respectively.
+ */
+/* empty set of fields... for suitable definition of emptiness. */
+static const struct req_msg_field *empty[] = {
+ &RMF_PTLRPC_BODY
+};
+
+static const struct req_msg_field *mgs_target_info_only[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MGS_TARGET_INFO
+};
+
+static const struct req_msg_field *mgs_set_info[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MGS_SEND_PARAM
+};
+
+static const struct req_msg_field *mgs_config_read_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MGS_CONFIG_BODY
+};
+
+static const struct req_msg_field *mgs_config_read_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MGS_CONFIG_RES
+};
+
+static const struct req_msg_field *log_cancel_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_LOGCOOKIES
+};
+
+static const struct req_msg_field *mdt_body_only[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY
+};
+
+static const struct req_msg_field *mdt_body_capa[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_CAPA1
+};
+
+static const struct req_msg_field *quotactl_only[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_OBD_QUOTACTL
+};
+
+static const struct req_msg_field *quota_body_only[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_QUOTA_BODY
+};
+
+static const struct req_msg_field *ldlm_intent_quota_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_LDLM_INTENT,
+ &RMF_QUOTA_BODY
+};
+
+static const struct req_msg_field *ldlm_intent_quota_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REP,
+ &RMF_DLM_LVB,
+ &RMF_QUOTA_BODY
+};
+
+static const struct req_msg_field *mdt_close_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_EPOCH,
+ &RMF_REC_REINT,
+ &RMF_CAPA1
+};
+
+static const struct req_msg_field *mdt_release_close_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_EPOCH,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_CLOSE_DATA
+};
+
+static const struct req_msg_field *obd_statfs_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_OBD_STATFS
+};
+
+static const struct req_msg_field *seq_query_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_SEQ_OPC,
+ &RMF_SEQ_RANGE
+};
+
+static const struct req_msg_field *seq_query_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_SEQ_RANGE
+};
+
+static const struct req_msg_field *fld_query_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_FLD_OPC,
+ &RMF_FLD_MDFLD
+};
+
+static const struct req_msg_field *fld_query_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_FLD_MDFLD
+};
+
+static const struct req_msg_field *mds_getattr_name_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_CAPA1,
+ &RMF_NAME
+};
+
+static const struct req_msg_field *mds_reint_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT
+};
+
+static const struct req_msg_field *mds_reint_create_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_NAME
+};
+
+static const struct req_msg_field *mds_reint_create_slave_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_NAME,
+ &RMF_EADATA,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_NAME,
+ &RMF_EADATA,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *mds_reint_create_sym_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_NAME,
+ &RMF_SYMTGT,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *mds_reint_open_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_CAPA2,
+ &RMF_NAME,
+ &RMF_EADATA
+};
+
+static const struct req_msg_field *mds_reint_open_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_MDT_MD,
+ &RMF_ACL,
+ &RMF_CAPA1,
+ &RMF_CAPA2
+};
+
+static const struct req_msg_field *mds_reint_unlink_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_NAME,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *mds_reint_link_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_CAPA2,
+ &RMF_NAME,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *mds_reint_rename_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_CAPA2,
+ &RMF_NAME,
+ &RMF_SYMTGT,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *mds_last_unlink_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_MDT_MD,
+ &RMF_LOGCOOKIES,
+ &RMF_CAPA1,
+ &RMF_CAPA2
+};
+
+static const struct req_msg_field *mds_reint_setattr_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_MDT_EPOCH,
+ &RMF_EADATA,
+ &RMF_LOGCOOKIES,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *mds_reint_setxattr_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_REC_REINT,
+ &RMF_CAPA1,
+ &RMF_NAME,
+ &RMF_EADATA,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *mdt_swap_layouts[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_SWAP_LAYOUTS,
+ &RMF_CAPA1,
+ &RMF_CAPA2,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *obd_connect_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_TGTUUID,
+ &RMF_CLUUID,
+ &RMF_CONN,
+ &RMF_CONNECT_DATA
+};
+
+static const struct req_msg_field *obd_connect_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_CONNECT_DATA
+};
+
+static const struct req_msg_field *obd_set_info_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_SETINFO_KEY,
+ &RMF_SETINFO_VAL
+};
+
+static const struct req_msg_field *ost_grant_shrink_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_SETINFO_KEY,
+ &RMF_OST_BODY
+};
+
+static const struct req_msg_field *mds_getinfo_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_GETINFO_KEY,
+ &RMF_GETINFO_VALLEN
+};
+
+static const struct req_msg_field *mds_getinfo_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_GETINFO_VAL,
+};
+
+static const struct req_msg_field *ldlm_enqueue_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ
+};
+
+static const struct req_msg_field *ldlm_enqueue_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REP
+};
+
+static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REP,
+ &RMF_DLM_LVB
+};
+
+static const struct req_msg_field *ldlm_cp_callback_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_DLM_LVB
+};
+
+static const struct req_msg_field *ldlm_gl_callback_desc_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_DLM_GL_DESC
+};
+
+static const struct req_msg_field *ldlm_gl_callback_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_LVB
+};
+
+static const struct req_msg_field *ldlm_intent_basic_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_LDLM_INTENT,
+};
+
+static const struct req_msg_field *ldlm_intent_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_LDLM_INTENT,
+ &RMF_REC_REINT
+};
+
+static const struct req_msg_field *ldlm_intent_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REP,
+ &RMF_MDT_BODY,
+ &RMF_MDT_MD,
+ &RMF_ACL
+};
+
+static const struct req_msg_field *ldlm_intent_layout_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_LDLM_INTENT,
+ &RMF_LAYOUT_INTENT,
+ &RMF_EADATA /* for new layout to be set up */
+};
+static const struct req_msg_field *ldlm_intent_open_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REP,
+ &RMF_MDT_BODY,
+ &RMF_MDT_MD,
+ &RMF_ACL,
+ &RMF_CAPA1,
+ &RMF_CAPA2
+};
+
+static const struct req_msg_field *ldlm_intent_getattr_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_LDLM_INTENT,
+ &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
+ &RMF_CAPA1,
+ &RMF_NAME
+};
+
+static const struct req_msg_field *ldlm_intent_getattr_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REP,
+ &RMF_MDT_BODY,
+ &RMF_MDT_MD,
+ &RMF_ACL,
+ &RMF_CAPA1
+};
+
+static const struct req_msg_field *ldlm_intent_create_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_LDLM_INTENT,
+ &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
+ &RMF_CAPA1,
+ &RMF_NAME,
+ &RMF_EADATA
+};
+
+static const struct req_msg_field *ldlm_intent_open_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_LDLM_INTENT,
+ &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
+ &RMF_CAPA1,
+ &RMF_CAPA2,
+ &RMF_NAME,
+ &RMF_EADATA
+};
+
+static const struct req_msg_field *ldlm_intent_unlink_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_LDLM_INTENT,
+ &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
+ &RMF_CAPA1,
+ &RMF_NAME
+};
+
+static const struct req_msg_field *ldlm_intent_getxattr_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REQ,
+ &RMF_LDLM_INTENT,
+ &RMF_MDT_BODY,
+ &RMF_CAPA1,
+};
+
+static const struct req_msg_field *ldlm_intent_getxattr_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_DLM_REP,
+ &RMF_MDT_BODY,
+ &RMF_MDT_MD,
+ &RMF_ACL, /* for req_capsule_extend/mdt_intent_policy */
+ &RMF_EADATA,
+ &RMF_EAVALS,
+ &RMF_EAVALS_LENS
+};
+
+static const struct req_msg_field *mds_getxattr_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_CAPA1,
+ &RMF_NAME,
+ &RMF_EADATA
+};
+
+static const struct req_msg_field *mds_getxattr_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_EADATA
+};
+
+static const struct req_msg_field *mds_getattr_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_MDT_MD,
+ &RMF_ACL,
+ &RMF_CAPA1,
+ &RMF_CAPA2
+};
+
+static const struct req_msg_field *mds_setattr_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_MDT_MD,
+ &RMF_ACL,
+ &RMF_CAPA1,
+ &RMF_CAPA2
+};
+
+static const struct req_msg_field *mds_update_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_UPDATE,
+};
+
+static const struct req_msg_field *mds_update_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_UPDATE_REPLY,
+};
+
+static const struct req_msg_field *llog_origin_handle_create_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_LLOGD_BODY,
+ &RMF_NAME
+};
+
+static const struct req_msg_field *llogd_body_only[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_LLOGD_BODY
+};
+
+static const struct req_msg_field *llog_log_hdr_only[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_LLOG_LOG_HDR
+};
+
+static const struct req_msg_field *llogd_conn_body_only[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_LLOGD_CONN_BODY
+};
+
+static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_LLOGD_BODY,
+ &RMF_EADATA
+};
+
+static const struct req_msg_field *obd_idx_read_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_IDX_INFO
+};
+
+static const struct req_msg_field *obd_idx_read_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_IDX_INFO
+};
+
+static const struct req_msg_field *ost_body_only[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_OST_BODY
+};
+
+static const struct req_msg_field *ost_body_capa[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_OST_BODY,
+ &RMF_CAPA1
+};
+
+static const struct req_msg_field *ost_destroy_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_OST_BODY,
+ &RMF_DLM_REQ,
+ &RMF_CAPA1
+};
+
+
+static const struct req_msg_field *ost_brw_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_OST_BODY,
+ &RMF_OBD_IOOBJ,
+ &RMF_NIOBUF_REMOTE,
+ &RMF_CAPA1
+};
+
+static const struct req_msg_field *ost_brw_read_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_OST_BODY
+};
+
+static const struct req_msg_field *ost_brw_write_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_OST_BODY,
+ &RMF_RCS
+};
+
+static const struct req_msg_field *ost_get_info_generic_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_GENERIC_DATA,
+};
+
+static const struct req_msg_field *ost_get_info_generic_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_SETINFO_KEY
+};
+
+static const struct req_msg_field *ost_get_last_id_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_OBD_ID
+};
+
+static const struct req_msg_field *ost_get_last_fid_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_FID,
+};
+
+static const struct req_msg_field *ost_get_fiemap_client[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_FIEMAP_KEY,
+ &RMF_FIEMAP_VAL
+};
+
+static const struct req_msg_field *ost_get_fiemap_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_FIEMAP_VAL
+};
+
+static const struct req_msg_field *mdt_hsm_progress[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_MDS_HSM_PROGRESS,
+};
+
+static const struct req_msg_field *mdt_hsm_ct_register[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_MDS_HSM_ARCHIVE,
+};
+
+static const struct req_msg_field *mdt_hsm_ct_unregister[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+};
+
+static const struct req_msg_field *mdt_hsm_action_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_MDS_HSM_CURRENT_ACTION,
+};
+
+static const struct req_msg_field *mdt_hsm_state_get_server[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_HSM_USER_STATE,
+};
+
+static const struct req_msg_field *mdt_hsm_state_set[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_CAPA1,
+ &RMF_HSM_STATE_SET,
+};
+
+static const struct req_msg_field *mdt_hsm_request[] = {
+ &RMF_PTLRPC_BODY,
+ &RMF_MDT_BODY,
+ &RMF_MDS_HSM_REQUEST,
+ &RMF_MDS_HSM_USER_ITEM,
+ &RMF_GENERIC_DATA,
+};
+
+static struct req_format *req_formats[] = {
+ &RQF_OBD_PING,
+ &RQF_OBD_SET_INFO,
+ &RQF_OBD_IDX_READ,
+ &RQF_SEC_CTX,
+ &RQF_MGS_TARGET_REG,
+ &RQF_MGS_SET_INFO,
+ &RQF_MGS_CONFIG_READ,
+ &RQF_SEQ_QUERY,
+ &RQF_FLD_QUERY,
+ &RQF_MDS_CONNECT,
+ &RQF_MDS_DISCONNECT,
+ &RQF_MDS_GET_INFO,
+ &RQF_MDS_GETSTATUS,
+ &RQF_MDS_STATFS,
+ &RQF_MDS_GETATTR,
+ &RQF_MDS_GETATTR_NAME,
+ &RQF_MDS_GETXATTR,
+ &RQF_MDS_SYNC,
+ &RQF_MDS_CLOSE,
+ &RQF_MDS_RELEASE_CLOSE,
+ &RQF_MDS_PIN,
+ &RQF_MDS_UNPIN,
+ &RQF_MDS_READPAGE,
+ &RQF_MDS_WRITEPAGE,
+ &RQF_MDS_IS_SUBDIR,
+ &RQF_MDS_DONE_WRITING,
+ &RQF_MDS_REINT,
+ &RQF_MDS_REINT_CREATE,
+ &RQF_MDS_REINT_CREATE_RMT_ACL,
+ &RQF_MDS_REINT_CREATE_SLAVE,
+ &RQF_MDS_REINT_CREATE_SYM,
+ &RQF_MDS_REINT_OPEN,
+ &RQF_MDS_REINT_UNLINK,
+ &RQF_MDS_REINT_LINK,
+ &RQF_MDS_REINT_RENAME,
+ &RQF_MDS_REINT_SETATTR,
+ &RQF_MDS_REINT_SETXATTR,
+ &RQF_MDS_QUOTACHECK,
+ &RQF_MDS_QUOTACTL,
+ &RQF_MDS_HSM_PROGRESS,
+ &RQF_MDS_HSM_CT_REGISTER,
+ &RQF_MDS_HSM_CT_UNREGISTER,
+ &RQF_MDS_HSM_STATE_GET,
+ &RQF_MDS_HSM_STATE_SET,
+ &RQF_MDS_HSM_ACTION,
+ &RQF_MDS_HSM_REQUEST,
+ &RQF_MDS_SWAP_LAYOUTS,
+ &RQF_UPDATE_OBJ,
+ &RQF_QC_CALLBACK,
+ &RQF_OST_CONNECT,
+ &RQF_OST_DISCONNECT,
+ &RQF_OST_QUOTACHECK,
+ &RQF_OST_QUOTACTL,
+ &RQF_OST_GETATTR,
+ &RQF_OST_SETATTR,
+ &RQF_OST_CREATE,
+ &RQF_OST_PUNCH,
+ &RQF_OST_SYNC,
+ &RQF_OST_DESTROY,
+ &RQF_OST_BRW_READ,
+ &RQF_OST_BRW_WRITE,
+ &RQF_OST_STATFS,
+ &RQF_OST_SET_GRANT_INFO,
+ &RQF_OST_GET_INFO_GENERIC,
+ &RQF_OST_GET_INFO_LAST_ID,
+ &RQF_OST_GET_INFO_LAST_FID,
+ &RQF_OST_SET_INFO_LAST_FID,
+ &RQF_OST_GET_INFO_FIEMAP,
+ &RQF_LDLM_ENQUEUE,
+ &RQF_LDLM_ENQUEUE_LVB,
+ &RQF_LDLM_CONVERT,
+ &RQF_LDLM_CANCEL,
+ &RQF_LDLM_CALLBACK,
+ &RQF_LDLM_CP_CALLBACK,
+ &RQF_LDLM_BL_CALLBACK,
+ &RQF_LDLM_GL_CALLBACK,
+ &RQF_LDLM_GL_DESC_CALLBACK,
+ &RQF_LDLM_INTENT,
+ &RQF_LDLM_INTENT_BASIC,
+ &RQF_LDLM_INTENT_LAYOUT,
+ &RQF_LDLM_INTENT_GETATTR,
+ &RQF_LDLM_INTENT_OPEN,
+ &RQF_LDLM_INTENT_CREATE,
+ &RQF_LDLM_INTENT_UNLINK,
+ &RQF_LDLM_INTENT_GETXATTR,
+ &RQF_LDLM_INTENT_QUOTA,
+ &RQF_QUOTA_DQACQ,
+ &RQF_LOG_CANCEL,
+ &RQF_LLOG_ORIGIN_HANDLE_CREATE,
+ &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
+ &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
+ &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
+ &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
+ &RQF_LLOG_ORIGIN_CONNECT,
+ &RQF_CONNECT,
+};
+
+struct req_msg_field {
+ const __u32 rmf_flags;
+ const char *rmf_name;
+ /**
+ * Field length. (-1) means "variable length". If the
+ * \a RMF_F_STRUCT_ARRAY flag is set the field is also variable-length,
+ * but the actual size must be a whole multiple of \a rmf_size.
+ */
+ const int rmf_size;
+ void (*rmf_swabber)(void *);
+ void (*rmf_dumper)(void *);
+ int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
+};
+
+enum rmf_flags {
+ /**
+ * The field is a string, must be NUL-terminated.
+ */
+ RMF_F_STRING = 1 << 0,
+ /**
+ * The field's buffer size need not match the declared \a rmf_size.
+ */
+ RMF_F_NO_SIZE_CHECK = 1 << 1,
+ /**
+ * The field's buffer size must be a whole multiple of the declared \a
+ * rmf_size and the \a rmf_swabber function must work on the declared \a
+ * rmf_size worth of bytes.
+ */
+ RMF_F_STRUCT_ARRAY = 1 << 2
+};
+
+struct req_capsule;
+
+/*
+ * Request fields.
+ */
+#define DEFINE_MSGF(name, flags, size, swabber, dumper) { \
+ .rmf_name = (name), \
+ .rmf_flags = (flags), \
+ .rmf_size = (size), \
+ .rmf_swabber = (void (*)(void *))(swabber), \
+ .rmf_dumper = (void (*)(void *))(dumper) \
+}
+
+struct req_msg_field RMF_GENERIC_DATA =
+ DEFINE_MSGF("generic_data", 0,
+ -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_GENERIC_DATA);
+
+struct req_msg_field RMF_MGS_TARGET_INFO =
+ DEFINE_MSGF("mgs_target_info", 0,
+ sizeof(struct mgs_target_info),
+ lustre_swab_mgs_target_info, NULL);
+EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
+
+struct req_msg_field RMF_MGS_SEND_PARAM =
+ DEFINE_MSGF("mgs_send_param", 0,
+ sizeof(struct mgs_send_param),
+ NULL, NULL);
+EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
+
+struct req_msg_field RMF_MGS_CONFIG_BODY =
+ DEFINE_MSGF("mgs_config_read request", 0,
+ sizeof(struct mgs_config_body),
+ lustre_swab_mgs_config_body, NULL);
+EXPORT_SYMBOL(RMF_MGS_CONFIG_BODY);
+
+struct req_msg_field RMF_MGS_CONFIG_RES =
+ DEFINE_MSGF("mgs_config_read reply ", 0,
+ sizeof(struct mgs_config_res),
+ lustre_swab_mgs_config_res, NULL);
+EXPORT_SYMBOL(RMF_MGS_CONFIG_RES);
+
+struct req_msg_field RMF_U32 =
+ DEFINE_MSGF("generic u32", 0,
+ sizeof(__u32), lustre_swab_generic_32s, NULL);
+EXPORT_SYMBOL(RMF_U32);
+
+struct req_msg_field RMF_SETINFO_VAL =
+ DEFINE_MSGF("setinfo_val", 0, -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_SETINFO_VAL);
+
+struct req_msg_field RMF_GETINFO_KEY =
+ DEFINE_MSGF("getinfo_key", 0, -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_GETINFO_KEY);
+
+struct req_msg_field RMF_GETINFO_VALLEN =
+ DEFINE_MSGF("getinfo_vallen", 0,
+ sizeof(__u32), lustre_swab_generic_32s, NULL);
+EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
+
+struct req_msg_field RMF_GETINFO_VAL =
+ DEFINE_MSGF("getinfo_val", 0, -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_GETINFO_VAL);
+
+struct req_msg_field RMF_SEQ_OPC =
+ DEFINE_MSGF("seq_query_opc", 0,
+ sizeof(__u32), lustre_swab_generic_32s, NULL);
+EXPORT_SYMBOL(RMF_SEQ_OPC);
+
+struct req_msg_field RMF_SEQ_RANGE =
+ DEFINE_MSGF("seq_query_range", 0,
+ sizeof(struct lu_seq_range),
+ lustre_swab_lu_seq_range, NULL);
+EXPORT_SYMBOL(RMF_SEQ_RANGE);
+
+struct req_msg_field RMF_FLD_OPC =
+ DEFINE_MSGF("fld_query_opc", 0,
+ sizeof(__u32), lustre_swab_generic_32s, NULL);
+EXPORT_SYMBOL(RMF_FLD_OPC);
+
+struct req_msg_field RMF_FLD_MDFLD =
+ DEFINE_MSGF("fld_query_mdfld", 0,
+ sizeof(struct lu_seq_range),
+ lustre_swab_lu_seq_range, NULL);
+EXPORT_SYMBOL(RMF_FLD_MDFLD);
+
+struct req_msg_field RMF_MDT_BODY =
+ DEFINE_MSGF("mdt_body", 0,
+ sizeof(struct mdt_body), lustre_swab_mdt_body, NULL);
+EXPORT_SYMBOL(RMF_MDT_BODY);
+
+struct req_msg_field RMF_OBD_QUOTACTL =
+ DEFINE_MSGF("obd_quotactl", 0,
+ sizeof(struct obd_quotactl),
+ lustre_swab_obd_quotactl, NULL);
+EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
+
+struct req_msg_field RMF_QUOTA_BODY =
+ DEFINE_MSGF("quota_body", 0,
+ sizeof(struct quota_body), lustre_swab_quota_body, NULL);
+EXPORT_SYMBOL(RMF_QUOTA_BODY);
+
+struct req_msg_field RMF_MDT_EPOCH =
+ DEFINE_MSGF("mdt_ioepoch", 0,
+ sizeof(struct mdt_ioepoch), lustre_swab_mdt_ioepoch, NULL);
+EXPORT_SYMBOL(RMF_MDT_EPOCH);
+
+struct req_msg_field RMF_PTLRPC_BODY =
+ DEFINE_MSGF("ptlrpc_body", 0,
+ sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body, NULL);
+EXPORT_SYMBOL(RMF_PTLRPC_BODY);
+
+struct req_msg_field RMF_CLOSE_DATA =
+ DEFINE_MSGF("data_version", 0,
+ sizeof(struct close_data), lustre_swab_close_data, NULL);
+EXPORT_SYMBOL(RMF_CLOSE_DATA);
+
+struct req_msg_field RMF_OBD_STATFS =
+ DEFINE_MSGF("obd_statfs", 0,
+ sizeof(struct obd_statfs), lustre_swab_obd_statfs, NULL);
+EXPORT_SYMBOL(RMF_OBD_STATFS);
+
+struct req_msg_field RMF_SETINFO_KEY =
+ DEFINE_MSGF("setinfo_key", 0, -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_SETINFO_KEY);
+
+struct req_msg_field RMF_NAME =
+ DEFINE_MSGF("name", RMF_F_STRING, -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_NAME);
+
+struct req_msg_field RMF_SYMTGT =
+ DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_SYMTGT);
+
+struct req_msg_field RMF_TGTUUID =
+ DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
+ NULL);
+EXPORT_SYMBOL(RMF_TGTUUID);
+
+struct req_msg_field RMF_CLUUID =
+ DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL,
+ NULL);
+EXPORT_SYMBOL(RMF_CLUUID);
+
+struct req_msg_field RMF_STRING =
+ DEFINE_MSGF("string", RMF_F_STRING, -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_STRING);
+
+struct req_msg_field RMF_LLOGD_BODY =
+ DEFINE_MSGF("llogd_body", 0,
+ sizeof(struct llogd_body), lustre_swab_llogd_body, NULL);
+EXPORT_SYMBOL(RMF_LLOGD_BODY);
+
+struct req_msg_field RMF_LLOG_LOG_HDR =
+ DEFINE_MSGF("llog_log_hdr", 0,
+ sizeof(struct llog_log_hdr), lustre_swab_llog_hdr, NULL);
+EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
+
+struct req_msg_field RMF_LLOGD_CONN_BODY =
+ DEFINE_MSGF("llogd_conn_body", 0,
+ sizeof(struct llogd_conn_body),
+ lustre_swab_llogd_conn_body, NULL);
+EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
+
+/*
+ * connection handle received in MDS_CONNECT request.
+ *
+ * No swabbing needed because struct lustre_handle contains only a 64-bit cookie
+ * that the client does not interpret at all.
+ */
+struct req_msg_field RMF_CONN =
+ DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL, NULL);
+EXPORT_SYMBOL(RMF_CONN);
+
+struct req_msg_field RMF_CONNECT_DATA =
+ DEFINE_MSGF("cdata",
+ RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
+ sizeof(struct obd_connect_data),
+ lustre_swab_connect, NULL);
+EXPORT_SYMBOL(RMF_CONNECT_DATA);
+
+struct req_msg_field RMF_DLM_REQ =
+ DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
+ sizeof(struct ldlm_request),
+ lustre_swab_ldlm_request, NULL);
+EXPORT_SYMBOL(RMF_DLM_REQ);
+
+struct req_msg_field RMF_DLM_REP =
+ DEFINE_MSGF("dlm_rep", 0,
+ sizeof(struct ldlm_reply), lustre_swab_ldlm_reply, NULL);
+EXPORT_SYMBOL(RMF_DLM_REP);
+
+struct req_msg_field RMF_LDLM_INTENT =
+ DEFINE_MSGF("ldlm_intent", 0,
+ sizeof(struct ldlm_intent), lustre_swab_ldlm_intent, NULL);
+EXPORT_SYMBOL(RMF_LDLM_INTENT);
+
+struct req_msg_field RMF_DLM_LVB =
+ DEFINE_MSGF("dlm_lvb", 0, -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_DLM_LVB);
+
+struct req_msg_field RMF_DLM_GL_DESC =
+ DEFINE_MSGF("dlm_gl_desc", 0, sizeof(union ldlm_gl_desc),
+ lustre_swab_gl_desc, NULL);
+EXPORT_SYMBOL(RMF_DLM_GL_DESC);
+
+struct req_msg_field RMF_MDT_MD =
+ DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL, NULL);
+EXPORT_SYMBOL(RMF_MDT_MD);
+
+struct req_msg_field RMF_REC_REINT =
+ DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
+ lustre_swab_mdt_rec_reint, NULL);
+EXPORT_SYMBOL(RMF_REC_REINT);
+
+/* FIXME: this length should be defined as a macro */
+struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1,
+ NULL, NULL);
+EXPORT_SYMBOL(RMF_EADATA);
+
+struct req_msg_field RMF_EAVALS = DEFINE_MSGF("eavals", 0, -1, NULL, NULL);
+EXPORT_SYMBOL(RMF_EAVALS);
+
+struct req_msg_field RMF_ACL =
+ DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
+ LUSTRE_POSIX_ACL_MAX_SIZE, NULL, NULL);
+EXPORT_SYMBOL(RMF_ACL);
+
+/* FIXME: this should be made to use RMF_F_STRUCT_ARRAY */
+struct req_msg_field RMF_LOGCOOKIES =
+ DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
+ sizeof(struct llog_cookie), NULL, NULL);
+EXPORT_SYMBOL(RMF_LOGCOOKIES);
+
+struct req_msg_field RMF_CAPA1 =
+ DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
+ lustre_swab_lustre_capa, NULL);
+EXPORT_SYMBOL(RMF_CAPA1);
+
+struct req_msg_field RMF_CAPA2 =
+ DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
+ lustre_swab_lustre_capa, NULL);
+EXPORT_SYMBOL(RMF_CAPA2);
+
+struct req_msg_field RMF_LAYOUT_INTENT =
+ DEFINE_MSGF("layout_intent", 0,
+ sizeof(struct layout_intent), lustre_swab_layout_intent,
+ NULL);
+EXPORT_SYMBOL(RMF_LAYOUT_INTENT);
+
+/*
+ * OST request field.
+ */
+struct req_msg_field RMF_OST_BODY =
+ DEFINE_MSGF("ost_body", 0,
+ sizeof(struct ost_body), lustre_swab_ost_body, dump_ost_body);
+EXPORT_SYMBOL(RMF_OST_BODY);
+
+struct req_msg_field RMF_OBD_IOOBJ =
+ DEFINE_MSGF("obd_ioobj", RMF_F_STRUCT_ARRAY,
+ sizeof(struct obd_ioobj), lustre_swab_obd_ioobj, dump_ioo);
+EXPORT_SYMBOL(RMF_OBD_IOOBJ);
+
+struct req_msg_field RMF_NIOBUF_REMOTE =
+ DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY,
+ sizeof(struct niobuf_remote), lustre_swab_niobuf_remote,
+ dump_rniobuf);
+EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
+
+struct req_msg_field RMF_RCS =
+ DEFINE_MSGF("niobuf_remote", RMF_F_STRUCT_ARRAY, sizeof(__u32),
+ lustre_swab_generic_32s, dump_rcs);
+EXPORT_SYMBOL(RMF_RCS);
+
+struct req_msg_field RMF_EAVALS_LENS =
+ DEFINE_MSGF("eavals_lens", RMF_F_STRUCT_ARRAY, sizeof(__u32),
+ lustre_swab_generic_32s, NULL);
+EXPORT_SYMBOL(RMF_EAVALS_LENS);
+
+struct req_msg_field RMF_OBD_ID =
+ DEFINE_MSGF("u64", 0,
+ sizeof(u64), lustre_swab_ost_last_id, NULL);
+EXPORT_SYMBOL(RMF_OBD_ID);
+
+struct req_msg_field RMF_FID =
+ DEFINE_MSGF("fid", 0,
+ sizeof(struct lu_fid), lustre_swab_lu_fid, NULL);
+EXPORT_SYMBOL(RMF_FID);
+
+struct req_msg_field RMF_OST_ID =
+ DEFINE_MSGF("ost_id", 0,
+ sizeof(struct ost_id), lustre_swab_ost_id, NULL);
+EXPORT_SYMBOL(RMF_OST_ID);
+
+struct req_msg_field RMF_FIEMAP_KEY =
+ DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
+ lustre_swab_fiemap, NULL);
+EXPORT_SYMBOL(RMF_FIEMAP_KEY);
+
+struct req_msg_field RMF_FIEMAP_VAL =
+ DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap, NULL);
+EXPORT_SYMBOL(RMF_FIEMAP_VAL);
+
+struct req_msg_field RMF_IDX_INFO =
+ DEFINE_MSGF("idx_info", 0, sizeof(struct idx_info),
+ lustre_swab_idx_info, NULL);
+EXPORT_SYMBOL(RMF_IDX_INFO);
+struct req_msg_field RMF_HSM_USER_STATE =
+ DEFINE_MSGF("hsm_user_state", 0, sizeof(struct hsm_user_state),
+ lustre_swab_hsm_user_state, NULL);
+EXPORT_SYMBOL(RMF_HSM_USER_STATE);
+
+struct req_msg_field RMF_HSM_STATE_SET =
+ DEFINE_MSGF("hsm_state_set", 0, sizeof(struct hsm_state_set),
+ lustre_swab_hsm_state_set, NULL);
+EXPORT_SYMBOL(RMF_HSM_STATE_SET);
+
+struct req_msg_field RMF_MDS_HSM_PROGRESS =
+ DEFINE_MSGF("hsm_progress", 0, sizeof(struct hsm_progress_kernel),
+ lustre_swab_hsm_progress_kernel, NULL);
+EXPORT_SYMBOL(RMF_MDS_HSM_PROGRESS);
+
+struct req_msg_field RMF_MDS_HSM_CURRENT_ACTION =
+ DEFINE_MSGF("hsm_current_action", 0, sizeof(struct hsm_current_action),
+ lustre_swab_hsm_current_action, NULL);
+EXPORT_SYMBOL(RMF_MDS_HSM_CURRENT_ACTION);
+
+struct req_msg_field RMF_MDS_HSM_USER_ITEM =
+ DEFINE_MSGF("hsm_user_item", RMF_F_STRUCT_ARRAY,
+ sizeof(struct hsm_user_item), lustre_swab_hsm_user_item,
+ NULL);
+EXPORT_SYMBOL(RMF_MDS_HSM_USER_ITEM);
+
+struct req_msg_field RMF_MDS_HSM_ARCHIVE =
+ DEFINE_MSGF("hsm_archive", 0,
+ sizeof(__u32), lustre_swab_generic_32s, NULL);
+EXPORT_SYMBOL(RMF_MDS_HSM_ARCHIVE);
+
+struct req_msg_field RMF_MDS_HSM_REQUEST =
+ DEFINE_MSGF("hsm_request", 0, sizeof(struct hsm_request),
+ lustre_swab_hsm_request, NULL);
+EXPORT_SYMBOL(RMF_MDS_HSM_REQUEST);
+
+struct req_msg_field RMF_UPDATE = DEFINE_MSGF("update", 0, -1,
+ lustre_swab_update_buf, NULL);
+EXPORT_SYMBOL(RMF_UPDATE);
+
+struct req_msg_field RMF_UPDATE_REPLY = DEFINE_MSGF("update_reply", 0, -1,
+ lustre_swab_update_reply_buf,
+ NULL);
+EXPORT_SYMBOL(RMF_UPDATE_REPLY);
+
+struct req_msg_field RMF_SWAP_LAYOUTS =
+ DEFINE_MSGF("swap_layouts", 0, sizeof(struct mdc_swap_layouts),
+ lustre_swab_swap_layouts, NULL);
+EXPORT_SYMBOL(RMF_SWAP_LAYOUTS);
+/*
+ * Request formats.
+ */
+
+struct req_format {
+ const char *rf_name;
+ int rf_idx;
+ struct {
+ int nr;
+ const struct req_msg_field **d;
+ } rf_fields[RCL_NR];
+};
+
+#define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
+ .rf_name = name, \
+ .rf_fields = { \
+ [RCL_CLIENT] = { \
+ .nr = client_nr, \
+ .d = client \
+ }, \
+ [RCL_SERVER] = { \
+ .nr = server_nr, \
+ .d = server \
+ } \
+ } \
+}
+
+#define DEFINE_REQ_FMT0(name, client, server) \
+DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
+
+struct req_format RQF_OBD_PING =
+ DEFINE_REQ_FMT0("OBD_PING", empty, empty);
+EXPORT_SYMBOL(RQF_OBD_PING);
+
+struct req_format RQF_OBD_SET_INFO =
+ DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
+EXPORT_SYMBOL(RQF_OBD_SET_INFO);
+
+/* Read index file through the network */
+struct req_format RQF_OBD_IDX_READ =
+ DEFINE_REQ_FMT0("OBD_IDX_READ",
+ obd_idx_read_client, obd_idx_read_server);
+EXPORT_SYMBOL(RQF_OBD_IDX_READ);
+
+struct req_format RQF_SEC_CTX =
+ DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
+EXPORT_SYMBOL(RQF_SEC_CTX);
+
+struct req_format RQF_MGS_TARGET_REG =
+ DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
+ mgs_target_info_only);
+EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
+
+struct req_format RQF_MGS_SET_INFO =
+ DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
+ mgs_set_info);
+EXPORT_SYMBOL(RQF_MGS_SET_INFO);
+
+struct req_format RQF_MGS_CONFIG_READ =
+ DEFINE_REQ_FMT0("MGS_CONFIG_READ", mgs_config_read_client,
+ mgs_config_read_server);
+EXPORT_SYMBOL(RQF_MGS_CONFIG_READ);
+
+struct req_format RQF_SEQ_QUERY =
+ DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
+EXPORT_SYMBOL(RQF_SEQ_QUERY);
+
+struct req_format RQF_FLD_QUERY =
+ DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
+EXPORT_SYMBOL(RQF_FLD_QUERY);
+
+struct req_format RQF_LOG_CANCEL =
+ DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
+EXPORT_SYMBOL(RQF_LOG_CANCEL);
+
+struct req_format RQF_MDS_QUOTACHECK =
+ DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
+EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
+
+struct req_format RQF_OST_QUOTACHECK =
+ DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
+EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
+
+struct req_format RQF_MDS_QUOTACTL =
+ DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
+EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
+
+struct req_format RQF_OST_QUOTACTL =
+ DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
+EXPORT_SYMBOL(RQF_OST_QUOTACTL);
+
+struct req_format RQF_QC_CALLBACK =
+ DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
+EXPORT_SYMBOL(RQF_QC_CALLBACK);
+
+struct req_format RQF_QUOTA_DQACQ =
+ DEFINE_REQ_FMT0("QUOTA_DQACQ", quota_body_only, quota_body_only);
+EXPORT_SYMBOL(RQF_QUOTA_DQACQ);
+
+struct req_format RQF_LDLM_INTENT_QUOTA =
+ DEFINE_REQ_FMT0("LDLM_INTENT_QUOTA",
+ ldlm_intent_quota_client,
+ ldlm_intent_quota_server);
+EXPORT_SYMBOL(RQF_LDLM_INTENT_QUOTA);
+
+struct req_format RQF_MDS_GETSTATUS =
+ DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
+EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
+
+struct req_format RQF_MDS_STATFS =
+ DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
+EXPORT_SYMBOL(RQF_MDS_STATFS);
+
+struct req_format RQF_MDS_SYNC =
+ DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
+EXPORT_SYMBOL(RQF_MDS_SYNC);
+
+struct req_format RQF_MDS_GETATTR =
+ DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
+EXPORT_SYMBOL(RQF_MDS_GETATTR);
+
+struct req_format RQF_MDS_GETXATTR =
+ DEFINE_REQ_FMT0("MDS_GETXATTR",
+ mds_getxattr_client, mds_getxattr_server);
+EXPORT_SYMBOL(RQF_MDS_GETXATTR);
+
+struct req_format RQF_MDS_GETATTR_NAME =
+ DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
+ mds_getattr_name_client, mds_getattr_server);
+EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
+
+struct req_format RQF_MDS_REINT =
+ DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
+EXPORT_SYMBOL(RQF_MDS_REINT);
+
+struct req_format RQF_MDS_REINT_CREATE =
+ DEFINE_REQ_FMT0("MDS_REINT_CREATE",
+ mds_reint_create_client, mdt_body_capa);
+EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
+
+struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
+ DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
+ mds_reint_create_rmt_acl_client, mdt_body_capa);
+EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
+
+struct req_format RQF_MDS_REINT_CREATE_SLAVE =
+ DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
+ mds_reint_create_slave_client, mdt_body_capa);
+EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
+
+struct req_format RQF_MDS_REINT_CREATE_SYM =
+ DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
+ mds_reint_create_sym_client, mdt_body_capa);
+EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
+
+struct req_format RQF_MDS_REINT_OPEN =
+ DEFINE_REQ_FMT0("MDS_REINT_OPEN",
+ mds_reint_open_client, mds_reint_open_server);
+EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
+
+struct req_format RQF_MDS_REINT_UNLINK =
+ DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
+ mds_last_unlink_server);
+EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
+
+struct req_format RQF_MDS_REINT_LINK =
+ DEFINE_REQ_FMT0("MDS_REINT_LINK",
+ mds_reint_link_client, mdt_body_only);
+EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
+
+struct req_format RQF_MDS_REINT_RENAME =
+ DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
+ mds_last_unlink_server);
+EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
+
+struct req_format RQF_MDS_REINT_SETATTR =
+ DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
+ mds_reint_setattr_client, mds_setattr_server);
+EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
+
+struct req_format RQF_MDS_REINT_SETXATTR =
+ DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
+ mds_reint_setxattr_client, mdt_body_only);
+EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
+
+struct req_format RQF_MDS_CONNECT =
+ DEFINE_REQ_FMT0("MDS_CONNECT",
+ obd_connect_client, obd_connect_server);
+EXPORT_SYMBOL(RQF_MDS_CONNECT);
+
+struct req_format RQF_MDS_DISCONNECT =
+ DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
+EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
+
+struct req_format RQF_MDS_GET_INFO =
+ DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
+ mds_getinfo_server);
+EXPORT_SYMBOL(RQF_MDS_GET_INFO);
+
+struct req_format RQF_UPDATE_OBJ =
+ DEFINE_REQ_FMT0("OBJECT_UPDATE_OBJ", mds_update_client,
+ mds_update_server);
+EXPORT_SYMBOL(RQF_UPDATE_OBJ);
+
+struct req_format RQF_LDLM_ENQUEUE =
+ DEFINE_REQ_FMT0("LDLM_ENQUEUE",
+ ldlm_enqueue_client, ldlm_enqueue_lvb_server);
+EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
+
+struct req_format RQF_LDLM_ENQUEUE_LVB =
+ DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
+ ldlm_enqueue_client, ldlm_enqueue_lvb_server);
+EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
+
+struct req_format RQF_LDLM_CONVERT =
+ DEFINE_REQ_FMT0("LDLM_CONVERT",
+ ldlm_enqueue_client, ldlm_enqueue_server);
+EXPORT_SYMBOL(RQF_LDLM_CONVERT);
+
+struct req_format RQF_LDLM_CANCEL =
+ DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
+EXPORT_SYMBOL(RQF_LDLM_CANCEL);
+
+struct req_format RQF_LDLM_CALLBACK =
+ DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
+EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
+
+struct req_format RQF_LDLM_CP_CALLBACK =
+ DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
+EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
+
+struct req_format RQF_LDLM_BL_CALLBACK =
+ DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
+EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
+
+struct req_format RQF_LDLM_GL_CALLBACK =
+ DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
+ ldlm_gl_callback_server);
+EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
+
+struct req_format RQF_LDLM_GL_DESC_CALLBACK =
+ DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_gl_callback_desc_client,
+ ldlm_gl_callback_server);
+EXPORT_SYMBOL(RQF_LDLM_GL_DESC_CALLBACK);
+
+struct req_format RQF_LDLM_INTENT_BASIC =
+ DEFINE_REQ_FMT0("LDLM_INTENT_BASIC",
+ ldlm_intent_basic_client, ldlm_enqueue_lvb_server);
+EXPORT_SYMBOL(RQF_LDLM_INTENT_BASIC);
+
+struct req_format RQF_LDLM_INTENT =
+ DEFINE_REQ_FMT0("LDLM_INTENT",
+ ldlm_intent_client, ldlm_intent_server);
+EXPORT_SYMBOL(RQF_LDLM_INTENT);
+
+struct req_format RQF_LDLM_INTENT_LAYOUT =
+ DEFINE_REQ_FMT0("LDLM_INTENT_LAYOUT ",
+ ldlm_intent_layout_client, ldlm_enqueue_lvb_server);
+EXPORT_SYMBOL(RQF_LDLM_INTENT_LAYOUT);
+
+struct req_format RQF_LDLM_INTENT_GETATTR =
+ DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
+ ldlm_intent_getattr_client, ldlm_intent_getattr_server);
+EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
+
+struct req_format RQF_LDLM_INTENT_OPEN =
+ DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
+ ldlm_intent_open_client, ldlm_intent_open_server);
+EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
+
+struct req_format RQF_LDLM_INTENT_CREATE =
+ DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
+ ldlm_intent_create_client, ldlm_intent_getattr_server);
+EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
+
+struct req_format RQF_LDLM_INTENT_UNLINK =
+ DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
+ ldlm_intent_unlink_client, ldlm_intent_server);
+EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
+
+struct req_format RQF_LDLM_INTENT_GETXATTR =
+ DEFINE_REQ_FMT0("LDLM_INTENT_GETXATTR",
+ ldlm_intent_getxattr_client,
+ ldlm_intent_getxattr_server);
+EXPORT_SYMBOL(RQF_LDLM_INTENT_GETXATTR);
+
+struct req_format RQF_MDS_CLOSE =
+ DEFINE_REQ_FMT0("MDS_CLOSE",
+ mdt_close_client, mds_last_unlink_server);
+EXPORT_SYMBOL(RQF_MDS_CLOSE);
+
+struct req_format RQF_MDS_RELEASE_CLOSE =
+ DEFINE_REQ_FMT0("MDS_CLOSE",
+ mdt_release_close_client, mds_last_unlink_server);
+EXPORT_SYMBOL(RQF_MDS_RELEASE_CLOSE);
+
+struct req_format RQF_MDS_PIN =
+ DEFINE_REQ_FMT0("MDS_PIN",
+ mdt_body_capa, mdt_body_only);
+EXPORT_SYMBOL(RQF_MDS_PIN);
+
+struct req_format RQF_MDS_UNPIN =
+ DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
+EXPORT_SYMBOL(RQF_MDS_UNPIN);
+
+struct req_format RQF_MDS_DONE_WRITING =
+ DEFINE_REQ_FMT0("MDS_DONE_WRITING",
+ mdt_close_client, mdt_body_only);
+EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
+
+struct req_format RQF_MDS_READPAGE =
+ DEFINE_REQ_FMT0("MDS_READPAGE",
+ mdt_body_capa, mdt_body_only);
+EXPORT_SYMBOL(RQF_MDS_READPAGE);
+
+struct req_format RQF_MDS_HSM_ACTION =
+ DEFINE_REQ_FMT0("MDS_HSM_ACTION", mdt_body_capa, mdt_hsm_action_server);
+EXPORT_SYMBOL(RQF_MDS_HSM_ACTION);
+
+struct req_format RQF_MDS_HSM_PROGRESS =
+ DEFINE_REQ_FMT0("MDS_HSM_PROGRESS", mdt_hsm_progress, empty);
+EXPORT_SYMBOL(RQF_MDS_HSM_PROGRESS);
+
+struct req_format RQF_MDS_HSM_CT_REGISTER =
+ DEFINE_REQ_FMT0("MDS_HSM_CT_REGISTER", mdt_hsm_ct_register, empty);
+EXPORT_SYMBOL(RQF_MDS_HSM_CT_REGISTER);
+
+struct req_format RQF_MDS_HSM_CT_UNREGISTER =
+ DEFINE_REQ_FMT0("MDS_HSM_CT_UNREGISTER", mdt_hsm_ct_unregister, empty);
+EXPORT_SYMBOL(RQF_MDS_HSM_CT_UNREGISTER);
+
+struct req_format RQF_MDS_HSM_STATE_GET =
+ DEFINE_REQ_FMT0("MDS_HSM_STATE_GET",
+ mdt_body_capa, mdt_hsm_state_get_server);
+EXPORT_SYMBOL(RQF_MDS_HSM_STATE_GET);
+
+struct req_format RQF_MDS_HSM_STATE_SET =
+ DEFINE_REQ_FMT0("MDS_HSM_STATE_SET", mdt_hsm_state_set, empty);
+EXPORT_SYMBOL(RQF_MDS_HSM_STATE_SET);
+
+struct req_format RQF_MDS_HSM_REQUEST =
+ DEFINE_REQ_FMT0("MDS_HSM_REQUEST", mdt_hsm_request, empty);
+EXPORT_SYMBOL(RQF_MDS_HSM_REQUEST);
+
+struct req_format RQF_MDS_SWAP_LAYOUTS =
+ DEFINE_REQ_FMT0("MDS_SWAP_LAYOUTS",
+ mdt_swap_layouts, empty);
+EXPORT_SYMBOL(RQF_MDS_SWAP_LAYOUTS);
+
+/* This is for split */
+struct req_format RQF_MDS_WRITEPAGE =
+ DEFINE_REQ_FMT0("MDS_WRITEPAGE",
+ mdt_body_capa, mdt_body_only);
+EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
+
+struct req_format RQF_MDS_IS_SUBDIR =
+ DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
+ mdt_body_only, mdt_body_only);
+EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
+
+struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
+ DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
+ llog_origin_handle_create_client, llogd_body_only);
+EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
+
+struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
+ DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
+ llogd_body_only, llogd_body_only);
+EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
+
+struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
+ DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
+ llogd_body_only, llog_origin_handle_next_block_server);
+EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
+
+struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
+ DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
+ llogd_body_only, llog_origin_handle_next_block_server);
+EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
+
+struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
+ DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
+ llogd_body_only, llog_log_hdr_only);
+EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
+
+struct req_format RQF_LLOG_ORIGIN_CONNECT =
+ DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
+EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
+
+struct req_format RQF_CONNECT =
+ DEFINE_REQ_FMT0("CONNECT", obd_connect_client, obd_connect_server);
+EXPORT_SYMBOL(RQF_CONNECT);
+
+struct req_format RQF_OST_CONNECT =
+ DEFINE_REQ_FMT0("OST_CONNECT",
+ obd_connect_client, obd_connect_server);
+EXPORT_SYMBOL(RQF_OST_CONNECT);
+
+struct req_format RQF_OST_DISCONNECT =
+ DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
+EXPORT_SYMBOL(RQF_OST_DISCONNECT);
+
+struct req_format RQF_OST_GETATTR =
+ DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
+EXPORT_SYMBOL(RQF_OST_GETATTR);
+
+struct req_format RQF_OST_SETATTR =
+ DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
+EXPORT_SYMBOL(RQF_OST_SETATTR);
+
+struct req_format RQF_OST_CREATE =
+ DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
+EXPORT_SYMBOL(RQF_OST_CREATE);
+
+struct req_format RQF_OST_PUNCH =
+ DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
+EXPORT_SYMBOL(RQF_OST_PUNCH);
+
+struct req_format RQF_OST_SYNC =
+ DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
+EXPORT_SYMBOL(RQF_OST_SYNC);
+
+struct req_format RQF_OST_DESTROY =
+ DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
+EXPORT_SYMBOL(RQF_OST_DESTROY);
+
+struct req_format RQF_OST_BRW_READ =
+ DEFINE_REQ_FMT0("OST_BRW_READ", ost_brw_client, ost_brw_read_server);
+EXPORT_SYMBOL(RQF_OST_BRW_READ);
+
+struct req_format RQF_OST_BRW_WRITE =
+ DEFINE_REQ_FMT0("OST_BRW_WRITE", ost_brw_client, ost_brw_write_server);
+EXPORT_SYMBOL(RQF_OST_BRW_WRITE);
+
+struct req_format RQF_OST_STATFS =
+ DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
+EXPORT_SYMBOL(RQF_OST_STATFS);
+
+struct req_format RQF_OST_SET_GRANT_INFO =
+ DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_grant_shrink_client,
+ ost_body_only);
+EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
+
+struct req_format RQF_OST_GET_INFO_GENERIC =
+ DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
+ ost_get_info_generic_server);
+EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
+
+struct req_format RQF_OST_GET_INFO_LAST_ID =
+ DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
+ ost_get_last_id_server);
+EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
+
+struct req_format RQF_OST_GET_INFO_LAST_FID =
+ DEFINE_REQ_FMT0("OST_GET_INFO_LAST_FID", obd_set_info_client,
+ ost_get_last_fid_server);
+EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_FID);
+
+struct req_format RQF_OST_SET_INFO_LAST_FID =
+ DEFINE_REQ_FMT0("OST_SET_INFO_LAST_FID", obd_set_info_client,
+ empty);
+EXPORT_SYMBOL(RQF_OST_SET_INFO_LAST_FID);
+
+struct req_format RQF_OST_GET_INFO_FIEMAP =
+ DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
+ ost_get_fiemap_server);
+EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
+
+#if !defined(__REQ_LAYOUT_USER__)
+
+/* Convenience macro */
+#define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
+
+/**
+ * Initializes the capsule abstraction by computing and setting the \a rf_idx
+ * field of RQFs and the \a rmf_offset field of RMFs.
+ */
+int req_layout_init(void)
+{
+ int i;
+ int j;
+ int k;
+ struct req_format *rf = NULL;
+
+ for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
+ rf = req_formats[i];
+ rf->rf_idx = i;
+ for (j = 0; j < RCL_NR; ++j) {
+ LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
+ for (k = 0; k < rf->rf_fields[j].nr; ++k) {
+ struct req_msg_field *field;
+
+ field = (typeof(field))rf->rf_fields[j].d[k];
+ LASSERT(!(field->rmf_flags & RMF_F_STRUCT_ARRAY)
+ || field->rmf_size > 0);
+ LASSERT(field->rmf_offset[i][j] == 0);
+ /*
+ * k + 1 to detect unused format/field
+ * combinations.
+ */
+ field->rmf_offset[i][j] = k + 1;
+ }
+ }
+ }
+ return 0;
+}
+EXPORT_SYMBOL(req_layout_init);
+
+void req_layout_fini(void)
+{
+}
+EXPORT_SYMBOL(req_layout_fini);
+
+/**
+ * Initializes the expected sizes of each RMF in a \a pill (\a rc_area) to -1.
+ *
+ * Actual/expected field sizes are set elsewhere in functions in this file:
+ * req_capsule_init(), req_capsule_server_pack(), req_capsule_set_size() and
+ * req_capsule_msg_size(). The \a rc_area information is used by.
+ * ptlrpc_request_set_replen().
+ */
+void req_capsule_init_area(struct req_capsule *pill)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
+ pill->rc_area[RCL_CLIENT][i] = -1;
+ pill->rc_area[RCL_SERVER][i] = -1;
+ }
+}
+EXPORT_SYMBOL(req_capsule_init_area);
+
+/**
+ * Initialize a pill.
+ *
+ * The \a location indicates whether the caller is executing on the client side
+ * (RCL_CLIENT) or server side (RCL_SERVER)..
+ */
+void req_capsule_init(struct req_capsule *pill,
+ struct ptlrpc_request *req,
+ enum req_location location)
+{
+ LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
+
+ /*
+ * Today all capsules are embedded in ptlrpc_request structs,
+ * but just in case that ever isn't the case, we don't reach
+ * into req unless req != NULL and pill is the one embedded in
+ * the req.
+ *
+ * The req->rq_pill_init flag makes it safe to initialize a pill
+ * twice, which might happen in the OST paths as a result of the
+ * high-priority RPC queue getting peeked at before ost_handle()
+ * handles an OST RPC.
+ */
+ if (req != NULL && pill == &req->rq_pill && req->rq_pill_init)
+ return;
+
+ memset(pill, 0, sizeof(*pill));
+ pill->rc_req = req;
+ pill->rc_loc = location;
+ req_capsule_init_area(pill);
+
+ if (req != NULL && pill == &req->rq_pill)
+ req->rq_pill_init = 1;
+}
+EXPORT_SYMBOL(req_capsule_init);
+
+void req_capsule_fini(struct req_capsule *pill)
+{
+}
+EXPORT_SYMBOL(req_capsule_fini);
+
+static int __req_format_is_sane(const struct req_format *fmt)
+{
+ return
+ 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
+ req_formats[fmt->rf_idx] == fmt;
+}
+
+static struct lustre_msg *__req_msg(const struct req_capsule *pill,
+ enum req_location loc)
+{
+ struct ptlrpc_request *req;
+
+ req = pill->rc_req;
+ return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
+}
+
+/**
+ * Set the format (\a fmt) of a \a pill; format changes are not allowed here
+ * (see req_capsule_extend()).
+ */
+void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
+{
+ LASSERT(pill->rc_fmt == NULL || pill->rc_fmt == fmt);
+ LASSERT(__req_format_is_sane(fmt));
+
+ pill->rc_fmt = fmt;
+}
+EXPORT_SYMBOL(req_capsule_set);
+
+/**
+ * Fills in any parts of the \a rc_area of a \a pill that haven't been filled in
+ * yet.
+
+ * \a rc_area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
+ * variable-sized fields. The field sizes come from the declared \a rmf_size
+ * field of a \a pill's \a rc_fmt's RMF's.
+ */
+int req_capsule_filled_sizes(struct req_capsule *pill,
+ enum req_location loc)
+{
+ const struct req_format *fmt = pill->rc_fmt;
+ int i;
+
+ LASSERT(fmt != NULL);
+
+ for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
+ if (pill->rc_area[loc][i] == -1) {
+ pill->rc_area[loc][i] =
+ fmt->rf_fields[loc].d[i]->rmf_size;
+ if (pill->rc_area[loc][i] == -1) {
+ /*
+ * Skip the following fields.
+ *
+ * If this LASSERT() trips then you're missing a
+ * call to req_capsule_set_size().
+ */
+ LASSERT(loc != RCL_SERVER);
+ break;
+ }
+ }
+ }
+ return i;
+}
+EXPORT_SYMBOL(req_capsule_filled_sizes);
+
+/**
+ * Capsule equivalent of lustre_pack_request() and lustre_pack_reply().
+ *
+ * This function uses the \a pill's \a rc_area as filled in by
+ * req_capsule_set_size() or req_capsule_filled_sizes() (the latter is called by
+ * this function).
+ */
+int req_capsule_server_pack(struct req_capsule *pill)
+{
+ const struct req_format *fmt;
+ int count;
+ int rc;
+
+ LASSERT(pill->rc_loc == RCL_SERVER);
+ fmt = pill->rc_fmt;
+ LASSERT(fmt != NULL);
+
+ count = req_capsule_filled_sizes(pill, RCL_SERVER);
+ rc = lustre_pack_reply(pill->rc_req, count,
+ pill->rc_area[RCL_SERVER], NULL);
+ if (rc != 0) {
+ DEBUG_REQ(D_ERROR, pill->rc_req,
+ "Cannot pack %d fields in format `%s': ",
+ count, fmt->rf_name);
+ }
+ return rc;
+}
+EXPORT_SYMBOL(req_capsule_server_pack);
+
+/**
+ * Returns the PTLRPC request or reply (\a loc) buffer offset of a \a pill
+ * corresponding to the given RMF (\a field).
+ */
+static int __req_capsule_offset(const struct req_capsule *pill,
+ const struct req_msg_field *field,
+ enum req_location loc)
+{
+ int offset;
+
+ offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
+ LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
+ pill->rc_fmt->rf_name,
+ field->rmf_name, offset, loc);
+ offset--;
+
+ LASSERT(0 <= offset && offset < REQ_MAX_FIELD_NR);
+ return offset;
+}
+
+/**
+ * Helper for __req_capsule_get(); swabs value / array of values and/or dumps
+ * them if desired.
+ */
+static
+void
+swabber_dumper_helper(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ enum req_location loc,
+ int offset,
+ void *value, int len, int dump, void (*swabber)(void *))
+{
+ void *p;
+ int i;
+ int n;
+ int do_swab;
+ int inout = loc == RCL_CLIENT;
+
+ swabber = swabber ?: field->rmf_swabber;
+
+ if (ptlrpc_buf_need_swab(pill->rc_req, inout, offset) &&
+ swabber != NULL && value != NULL)
+ do_swab = 1;
+ else
+ do_swab = 0;
+
+ if (!field->rmf_dumper)
+ dump = 0;
+
+ if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY)) {
+ if (dump) {
+ CDEBUG(D_RPCTRACE, "Dump of %sfield %s follows\n",
+ do_swab ? "unswabbed " : "", field->rmf_name);
+ field->rmf_dumper(value);
+ }
+ if (!do_swab)
+ return;
+ swabber(value);
+ ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
+ if (dump) {
+ CDEBUG(D_RPCTRACE, "Dump of swabbed field %s follows\n",
+ field->rmf_name);
+ field->rmf_dumper(value);
+ }
+
+ return;
+ }
+
+ /*
+ * We're swabbing an array; swabber() swabs a single array element, so
+ * swab every element.
+ */
+ LASSERT((len % field->rmf_size) == 0);
+ for (p = value, i = 0, n = len / field->rmf_size;
+ i < n;
+ i++, p += field->rmf_size) {
+ if (dump) {
+ CDEBUG(D_RPCTRACE, "Dump of %sarray field %s, element %d follows\n",
+ do_swab ? "unswabbed " : "", field->rmf_name, i);
+ field->rmf_dumper(p);
+ }
+ if (!do_swab)
+ continue;
+ swabber(p);
+ if (dump) {
+ CDEBUG(D_RPCTRACE, "Dump of swabbed array field %s, element %d follows\n",
+ field->rmf_name, i);
+ field->rmf_dumper(value);
+ }
+ }
+ if (do_swab)
+ ptlrpc_buf_set_swabbed(pill->rc_req, inout, offset);
+}
+
+/**
+ * Returns the pointer to a PTLRPC request or reply (\a loc) buffer of a \a pill
+ * corresponding to the given RMF (\a field).
+ *
+ * The buffer will be swabbed using the given \a swabber. If \a swabber == NULL
+ * then the \a rmf_swabber from the RMF will be used. Soon there will be no
+ * calls to __req_capsule_get() with a non-NULL \a swabber; \a swabber will then
+ * be removed. Fields with the \a RMF_F_STRUCT_ARRAY flag set will have each
+ * element of the array swabbed.
+ */
+static void *__req_capsule_get(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ enum req_location loc,
+ void (*swabber)(void *),
+ int dump)
+{
+ const struct req_format *fmt;
+ struct lustre_msg *msg;
+ void *value;
+ int len;
+ int offset;
+
+ void *(*getter)(struct lustre_msg *m, int n, int minlen);
+
+ static const char *rcl_names[RCL_NR] = {
+ [RCL_CLIENT] = "client",
+ [RCL_SERVER] = "server"
+ };
+
+ LASSERT(pill != NULL);
+ LASSERT(pill != LP_POISON);
+ fmt = pill->rc_fmt;
+ LASSERT(fmt != NULL);
+ LASSERT(fmt != LP_POISON);
+ LASSERT(__req_format_is_sane(fmt));
+
+ offset = __req_capsule_offset(pill, field, loc);
+
+ msg = __req_msg(pill, loc);
+ LASSERT(msg != NULL);
+
+ getter = (field->rmf_flags & RMF_F_STRING) ?
+ (typeof(getter))lustre_msg_string : lustre_msg_buf;
+
+ if (field->rmf_flags & RMF_F_STRUCT_ARRAY) {
+ /*
+ * We've already asserted that field->rmf_size > 0 in
+ * req_layout_init().
+ */
+ len = lustre_msg_buflen(msg, offset);
+ if ((len % field->rmf_size) != 0) {
+ CERROR("%s: array field size mismatch %d modulo %d != 0 (%d)\n",
+ field->rmf_name, len, field->rmf_size, loc);
+ return NULL;
+ }
+ } else if (pill->rc_area[loc][offset] != -1) {
+ len = pill->rc_area[loc][offset];
+ } else {
+ len = max(field->rmf_size, 0);
+ }
+ value = getter(msg, offset, len);
+
+ if (value == NULL) {
+ DEBUG_REQ(D_ERROR, pill->rc_req,
+ "Wrong buffer for field `%s' (%d of %d) in format `%s': %d vs. %d (%s)\n",
+ field->rmf_name, offset, lustre_msg_bufcount(msg),
+ fmt->rf_name, lustre_msg_buflen(msg, offset), len,
+ rcl_names[loc]);
+ } else {
+ swabber_dumper_helper(pill, field, loc, offset, value, len,
+ dump, swabber);
+ }
+
+ return value;
+}
+
+/**
+ * Dump a request and/or reply
+ */
+static void __req_capsule_dump(struct req_capsule *pill, enum req_location loc)
+{
+ const struct req_format *fmt;
+ const struct req_msg_field *field;
+ int len;
+ int i;
+
+ fmt = pill->rc_fmt;
+
+ DEBUG_REQ(D_RPCTRACE, pill->rc_req, "BEGIN REQ CAPSULE DUMP\n");
+ for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
+ field = FMT_FIELD(fmt, loc, i);
+ if (field->rmf_dumper == NULL) {
+ /*
+ * FIXME Add a default hex dumper for fields that don't
+ * have a specific dumper
+ */
+ len = req_capsule_get_size(pill, field, loc);
+ CDEBUG(D_RPCTRACE, "Field %s has no dumper function; field size is %d\n",
+ field->rmf_name, len);
+ } else {
+ /* It's the dumping side-effect that we're interested in */
+ (void) __req_capsule_get(pill, field, loc, NULL, 1);
+ }
+ }
+ CDEBUG(D_RPCTRACE, "END REQ CAPSULE DUMP\n");
+}
+
+/**
+ * Dump a request.
+ */
+void req_capsule_client_dump(struct req_capsule *pill)
+{
+ __req_capsule_dump(pill, RCL_CLIENT);
+}
+EXPORT_SYMBOL(req_capsule_client_dump);
+
+/**
+ * Dump a reply
+ */
+void req_capsule_server_dump(struct req_capsule *pill)
+{
+ __req_capsule_dump(pill, RCL_SERVER);
+}
+EXPORT_SYMBOL(req_capsule_server_dump);
+
+/**
+ * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC request
+ * buffer corresponding to the given RMF (\a field) of a \a pill.
+ */
+void *req_capsule_client_get(struct req_capsule *pill,
+ const struct req_msg_field *field)
+{
+ return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
+}
+EXPORT_SYMBOL(req_capsule_client_get);
+
+/**
+ * Same as req_capsule_client_get(), but with a \a swabber argument.
+ *
+ * Currently unused; will be removed when req_capsule_server_swab_get() is
+ * unused too.
+ */
+void *req_capsule_client_swab_get(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ void *swabber)
+{
+ return __req_capsule_get(pill, field, RCL_CLIENT, swabber, 0);
+}
+EXPORT_SYMBOL(req_capsule_client_swab_get);
+
+/**
+ * Utility that combines req_capsule_set_size() and req_capsule_client_get().
+ *
+ * First the \a pill's request \a field's size is set (\a rc_area) using
+ * req_capsule_set_size() with the given \a len. Then the actual buffer is
+ * returned.
+ */
+void *req_capsule_client_sized_get(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ int len)
+{
+ req_capsule_set_size(pill, field, RCL_CLIENT, len);
+ return __req_capsule_get(pill, field, RCL_CLIENT, NULL, 0);
+}
+EXPORT_SYMBOL(req_capsule_client_sized_get);
+
+/**
+ * Trivial wrapper around __req_capsule_get(), that returns the PTLRPC reply
+ * buffer corresponding to the given RMF (\a field) of a \a pill.
+ */
+void *req_capsule_server_get(struct req_capsule *pill,
+ const struct req_msg_field *field)
+{
+ return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
+}
+EXPORT_SYMBOL(req_capsule_server_get);
+
+/**
+ * Same as req_capsule_server_get(), but with a \a swabber argument.
+ *
+ * Ideally all swabbing should be done pursuant to RMF definitions, with no
+ * swabbing done outside this capsule abstraction.
+ */
+void *req_capsule_server_swab_get(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ void *swabber)
+{
+ return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
+}
+EXPORT_SYMBOL(req_capsule_server_swab_get);
+
+/**
+ * Utility that combines req_capsule_set_size() and req_capsule_server_get().
+ *
+ * First the \a pill's request \a field's size is set (\a rc_area) using
+ * req_capsule_set_size() with the given \a len. Then the actual buffer is
+ * returned.
+ */
+void *req_capsule_server_sized_get(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ int len)
+{
+ req_capsule_set_size(pill, field, RCL_SERVER, len);
+ return __req_capsule_get(pill, field, RCL_SERVER, NULL, 0);
+}
+EXPORT_SYMBOL(req_capsule_server_sized_get);
+
+void *req_capsule_server_sized_swab_get(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ int len, void *swabber)
+{
+ req_capsule_set_size(pill, field, RCL_SERVER, len);
+ return __req_capsule_get(pill, field, RCL_SERVER, swabber, 0);
+}
+EXPORT_SYMBOL(req_capsule_server_sized_swab_get);
+
+/**
+ * Returns the buffer of a \a pill corresponding to the given \a field from the
+ * request (if the caller is executing on the server-side) or reply (if the
+ * caller is executing on the client-side).
+ *
+ * This function convenient for use is code that could be executed on the
+ * client and server alike.
+ */
+const void *req_capsule_other_get(struct req_capsule *pill,
+ const struct req_msg_field *field)
+{
+ return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL, 0);
+}
+EXPORT_SYMBOL(req_capsule_other_get);
+
+/**
+ * Set the size of the PTLRPC request/reply (\a loc) buffer for the given \a
+ * field of the given \a pill.
+ *
+ * This function must be used when constructing variable sized fields of a
+ * request or reply.
+ */
+void req_capsule_set_size(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ enum req_location loc, int size)
+{
+ LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
+
+ if ((size != field->rmf_size) &&
+ (field->rmf_size != -1) &&
+ !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
+ (size > 0)) {
+ if ((field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
+ (size % field->rmf_size != 0)) {
+ CERROR("%s: array field size mismatch %d %% %d != 0 (%d)\n",
+ field->rmf_name, size, field->rmf_size, loc);
+ LBUG();
+ } else if (!(field->rmf_flags & RMF_F_STRUCT_ARRAY) &&
+ size < field->rmf_size) {
+ CERROR("%s: field size mismatch %d != %d (%d)\n",
+ field->rmf_name, size, field->rmf_size, loc);
+ LBUG();
+ }
+ }
+
+ pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
+}
+EXPORT_SYMBOL(req_capsule_set_size);
+
+/**
+ * Return the actual PTLRPC buffer length of a request or reply (\a loc)
+ * for the given \a pill's given \a field.
+ *
+ * NB: this function doesn't correspond with req_capsule_set_size(), which
+ * actually sets the size in pill.rc_area[loc][offset], but this function
+ * returns the message buflen[offset], maybe we should use another name.
+ */
+int req_capsule_get_size(const struct req_capsule *pill,
+ const struct req_msg_field *field,
+ enum req_location loc)
+{
+ LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
+
+ return lustre_msg_buflen(__req_msg(pill, loc),
+ __req_capsule_offset(pill, field, loc));
+}
+EXPORT_SYMBOL(req_capsule_get_size);
+
+/**
+ * Wrapper around lustre_msg_size() that returns the PTLRPC size needed for the
+ * given \a pill's request or reply (\a loc) given the field size recorded in
+ * the \a pill's rc_area.
+ *
+ * See also req_capsule_set_size().
+ */
+int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
+{
+ return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
+ pill->rc_fmt->rf_fields[loc].nr,
+ pill->rc_area[loc]);
+}
+
+/**
+ * While req_capsule_msg_size() computes the size of a PTLRPC request or reply
+ * (\a loc) given a \a pill's \a rc_area, this function computes the size of a
+ * PTLRPC request or reply given only an RQF (\a fmt).
+ *
+ * This function should not be used for formats which contain variable size
+ * fields.
+ */
+int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
+ enum req_location loc)
+{
+ int size, i = 0;
+
+ /*
+ * This function should probably LASSERT() that fmt has no fields with
+ * RMF_F_STRUCT_ARRAY in rmf_flags, since we can't know here how many
+ * elements in the array there will ultimately be, but then, we could
+ * assume that there will be at least one element, and that's just what
+ * we do.
+ */
+ size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
+ if (size < 0)
+ return size;
+
+ for (; i < fmt->rf_fields[loc].nr; ++i)
+ if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
+ size += cfs_size_round(fmt->rf_fields[loc].d[i]->
+ rmf_size);
+ return size;
+}
+
+/**
+ * Changes the format of an RPC.
+ *
+ * The pill must already have been initialized, which means that it already has
+ * a request format. The new format \a fmt must be an extension of the pill's
+ * old format. Specifically: the new format must have as many request and reply
+ * fields as the old one, and all fields shared by the old and new format must
+ * be at least as large in the new format.
+ *
+ * The new format's fields may be of different "type" than the old format, but
+ * only for fields that are "opaque" blobs: fields which have a) have no
+ * \a rmf_swabber, b) \a rmf_flags == 0 or RMF_F_NO_SIZE_CHECK, and c) \a
+ * rmf_size == -1 or \a rmf_flags == RMF_F_NO_SIZE_CHECK. For example,
+ * OBD_SET_INFO has a key field and an opaque value field that gets interpreted
+ * according to the key field. When the value, according to the key, contains a
+ * structure (or array thereof) to be swabbed, the format should be changed to
+ * one where the value field has \a rmf_size/rmf_flags/rmf_swabber set
+ * accordingly.
+ */
+void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
+{
+ int i;
+ int j;
+
+ const struct req_format *old;
+
+ LASSERT(pill->rc_fmt != NULL);
+ LASSERT(__req_format_is_sane(fmt));
+
+ old = pill->rc_fmt;
+ /*
+ * Sanity checking...
+ */
+ for (i = 0; i < RCL_NR; ++i) {
+ LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
+ for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
+ const struct req_msg_field *ofield = FMT_FIELD(old, i, j);
+
+ /* "opaque" fields can be transmogrified */
+ if (ofield->rmf_swabber == NULL &&
+ (ofield->rmf_flags & ~RMF_F_NO_SIZE_CHECK) == 0 &&
+ (ofield->rmf_size == -1 ||
+ ofield->rmf_flags == RMF_F_NO_SIZE_CHECK))
+ continue;
+ LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
+ }
+ /*
+ * Last field in old format can be shorter than in new.
+ */
+ LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
+ FMT_FIELD(old, i, j)->rmf_size);
+ }
+
+ pill->rc_fmt = fmt;
+}
+EXPORT_SYMBOL(req_capsule_extend);
+
+/**
+ * This function returns a non-zero value if the given \a field is present in
+ * the format (\a rc_fmt) of \a pill's PTLRPC request or reply (\a loc), else it
+ * returns 0.
+ */
+int req_capsule_has_field(const struct req_capsule *pill,
+ const struct req_msg_field *field,
+ enum req_location loc)
+{
+ LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
+
+ return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
+}
+EXPORT_SYMBOL(req_capsule_has_field);
+
+/**
+ * Returns a non-zero value if the given \a field is present in the given \a
+ * pill's PTLRPC request or reply (\a loc), else it returns 0.
+ */
+int req_capsule_field_present(const struct req_capsule *pill,
+ const struct req_msg_field *field,
+ enum req_location loc)
+{
+ int offset;
+
+ LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
+ LASSERT(req_capsule_has_field(pill, field, loc));
+
+ offset = __req_capsule_offset(pill, field, loc);
+ return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
+}
+EXPORT_SYMBOL(req_capsule_field_present);
+
+/**
+ * This function shrinks the size of the _buffer_ of the \a pill's PTLRPC
+ * request or reply (\a loc).
+ *
+ * This is not the opposite of req_capsule_extend().
+ */
+void req_capsule_shrink(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ unsigned int newlen,
+ enum req_location loc)
+{
+ const struct req_format *fmt;
+ struct lustre_msg *msg;
+ int len;
+ int offset;
+
+ fmt = pill->rc_fmt;
+ LASSERT(fmt != NULL);
+ LASSERT(__req_format_is_sane(fmt));
+ LASSERT(req_capsule_has_field(pill, field, loc));
+ LASSERT(req_capsule_field_present(pill, field, loc));
+
+ offset = __req_capsule_offset(pill, field, loc);
+
+ msg = __req_msg(pill, loc);
+ len = lustre_msg_buflen(msg, offset);
+ LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
+ fmt->rf_name, field->rmf_name, len, newlen);
+
+ if (loc == RCL_CLIENT)
+ pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
+ 1);
+ else
+ pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
+ 1);
+}
+EXPORT_SYMBOL(req_capsule_shrink);
+
+int req_capsule_server_grow(struct req_capsule *pill,
+ const struct req_msg_field *field,
+ unsigned int newlen)
+{
+ struct ptlrpc_reply_state *rs = pill->rc_req->rq_reply_state, *nrs;
+ char *from, *to;
+ int offset, len, rc;
+
+ LASSERT(pill->rc_fmt != NULL);
+ LASSERT(__req_format_is_sane(pill->rc_fmt));
+ LASSERT(req_capsule_has_field(pill, field, RCL_SERVER));
+ LASSERT(req_capsule_field_present(pill, field, RCL_SERVER));
+
+ len = req_capsule_get_size(pill, field, RCL_SERVER);
+ offset = __req_capsule_offset(pill, field, RCL_SERVER);
+ if (pill->rc_req->rq_repbuf_len >=
+ lustre_packed_msg_size(pill->rc_req->rq_repmsg) - len + newlen)
+ CERROR("Inplace repack might be done\n");
+
+ pill->rc_req->rq_reply_state = NULL;
+ req_capsule_set_size(pill, field, RCL_SERVER, newlen);
+ rc = req_capsule_server_pack(pill);
+ if (rc) {
+ /* put old rs back, the caller will decide what to do */
+ pill->rc_req->rq_reply_state = rs;
+ return rc;
+ }
+ nrs = pill->rc_req->rq_reply_state;
+ /* Now we need only buffers, copy first chunk */
+ to = lustre_msg_buf(nrs->rs_msg, 0, 0);
+ from = lustre_msg_buf(rs->rs_msg, 0, 0);
+ len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) - from;
+ memcpy(to, from, len);
+ /* check if we have tail and copy it too */
+ if (rs->rs_msg->lm_bufcount > offset + 1) {
+ to = lustre_msg_buf(nrs->rs_msg, offset + 1, 0);
+ from = lustre_msg_buf(rs->rs_msg, offset + 1, 0);
+ offset = rs->rs_msg->lm_bufcount - 1;
+ len = (char *)lustre_msg_buf(rs->rs_msg, offset, 0) +
+ cfs_size_round(rs->rs_msg->lm_buflens[offset]) - from;
+ memcpy(to, from, len);
+ }
+ /* drop old reply if everything is fine */
+ if (rs->rs_difficult) {
+ /* copy rs data */
+ int i;
+
+ nrs->rs_difficult = 1;
+ nrs->rs_no_ack = rs->rs_no_ack;
+ for (i = 0; i < rs->rs_nlocks; i++) {
+ nrs->rs_locks[i] = rs->rs_locks[i];
+ nrs->rs_modes[i] = rs->rs_modes[i];
+ nrs->rs_nlocks++;
+ }
+ rs->rs_nlocks = 0;
+ rs->rs_difficult = 0;
+ rs->rs_no_ack = 0;
+ }
+ ptlrpc_rs_decref(rs);
+ return 0;
+}
+EXPORT_SYMBOL(req_capsule_server_grow);
+/* __REQ_LAYOUT_USER__ */
+#endif
Code Review / kvmfornfv.git / blobdiff