/* * 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, 2013, 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 */ /* * 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 #ifdef __KERNEL__ #include #else # include #endif /* LUSTRE_VERSION_CODE */ #include #include /* lustre_swab_mdt_body */ #include /* obd2cli_tgt() (required by DEBUG_REQ()) */ #include #include #include #endif /* !__REQ_LAYOUT_USER__ */ /* struct ptlrpc_request, lustre_msg* */ #include #include /* * 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 *fld_read_client[] = { &RMF_PTLRPC_BODY, &RMF_FLD_MDFLD }; static const struct req_msg_field *fld_read_server[] = { &RMF_PTLRPC_BODY, &RMF_GENERIC_DATA }; 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_OUT_UPDATE, }; static const struct req_msg_field *mds_update_server[] = { &RMF_PTLRPC_BODY, &RMF_OUT_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_GETINFO_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_client[] = { &RMF_PTLRPC_BODY, &RMF_GETINFO_KEY, &RMF_FID, }; 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 const struct req_msg_field *obd_lfsck_request[] = { &RMF_PTLRPC_BODY, &RMF_LFSCK_REQUEST, }; static const struct req_msg_field *obd_lfsck_reply[] = { &RMF_PTLRPC_BODY, &RMF_LFSCK_REPLY, }; 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_FLD_READ, &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_READPAGE, &RQF_MDS_WRITEPAGE, &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_OUT_UPDATE, &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, &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, &RQF_LFSCK_NOTIFY, &RQF_LFSCK_QUERY, }; 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 */, #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0) sizeof(struct obd_connect_data), #else /* For interoperability with 1.8 and 2.0 clients/servers. * The RPC verification code allows larger RPC buffers, but not * smaller buffers. Until we no longer need to keep compatibility * with older servers/clients we can only check that the buffer * size is at least as large as obd_connect_data_v1. That is not * not in itself harmful, since the chance of just corrupting this * field is low. See JIRA LU-16 for details. */ sizeof(struct obd_connect_data_v1), #endif 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("obd_id", 0, sizeof(obd_id), 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_OUT_UPDATE = DEFINE_MSGF("object_update", 0, -1, lustre_swab_object_update_request, NULL); EXPORT_SYMBOL(RMF_OUT_UPDATE); struct req_msg_field RMF_OUT_UPDATE_REPLY = DEFINE_MSGF("object_update_reply", 0, -1, lustre_swab_object_update_reply, NULL); EXPORT_SYMBOL(RMF_OUT_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); struct req_msg_field RMF_LFSCK_REQUEST = DEFINE_MSGF("lfsck_request", 0, sizeof(struct lfsck_request), lustre_swab_lfsck_request, NULL); EXPORT_SYMBOL(RMF_LFSCK_REQUEST); struct req_msg_field RMF_LFSCK_REPLY = DEFINE_MSGF("lfsck_reply", 0, sizeof(struct lfsck_reply), lustre_swab_lfsck_reply, NULL); EXPORT_SYMBOL(RMF_LFSCK_REPLY); /* * 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_FLD_READ = DEFINE_REQ_FMT0("FLD_READ", fld_read_client, fld_read_server); EXPORT_SYMBOL(RQF_FLD_READ); 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_OUT_UPDATE = DEFINE_REQ_FMT0("OUT_UPDATE_OBJ", mds_update_client, mds_update_server); EXPORT_SYMBOL(RQF_OUT_UPDATE); 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_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_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 = DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client, ost_get_info_generic_server); EXPORT_SYMBOL(RQF_OST_GET_INFO); 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", ost_get_last_fid_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); struct req_format RQF_LFSCK_NOTIFY = DEFINE_REQ_FMT0("LFSCK_NOTIFY", obd_lfsck_request, empty); EXPORT_SYMBOL(RQF_LFSCK_NOTIFY); struct req_format RQF_LFSCK_QUERY = DEFINE_REQ_FMT0("LFSCK_QUERY", obd_lfsck_request, obd_lfsck_reply); EXPORT_SYMBOL(RQF_LFSCK_QUERY); #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 */ 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 convienient 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