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https://gitlab.uni-freiburg.de/opensourcevdi/spice
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81 lines
2.9 KiB
C
81 lines
2.9 KiB
C
/*
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Copyright (C) 2012 Red Hat, Inc.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _H_MIGRATION_PROTOCOL
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#define _H_MIGRATION_PROTOCOL
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/* ************************************************
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* src-server to dst-server migration data messages
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* ************************************************/
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/* increase the version when the version of any
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* of the migration data messages is increased */
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#define SPICE_MIGRATION_PROTOCOL_VERSION ~0
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typedef struct __attribute__ ((__packed__)) SpiceMigrateDataHeader {
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uint32_t magic;
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uint32_t version;
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} SpiceMigrateDataHeader;
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/* ********************
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* Char device base
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* *******************/
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/* increase the version of descendent char devices when this
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* version is increased */
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#define SPICE_MIGRATE_DATA_CHAR_DEVICE_VERSION 1
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/* Should be the first field of any of the char_devices migration data (see write_data_ptr) */
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typedef struct __attribute__ ((__packed__)) SpiceMigrateDataCharDevice {
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uint32_t version;
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uint8_t connected;
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uint32_t num_client_tokens;
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uint32_t num_send_tokens;
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uint32_t write_size; /* write to dev */
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uint32_t write_num_client_tokens; /* how many messages from the client are part of the write_data */
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uint32_t write_data_ptr; /* offset from
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SpiceMigrateDataCharDevice - sizeof(SpiceMigrateDataHeader) */
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} SpiceMigrateDataCharDevice;
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/* ********
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* spicevmc
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* ********/
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#define SPICE_MIGRATE_DATA_SPICEVMC_VERSION 1 /* NOTE: increase version when CHAR_DEVICE_VERSION
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is increased */
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#define SPICE_MIGRATE_DATA_SPICEVMC_MAGIC (*(uint32_t *)"SVMD")
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typedef struct __attribute__ ((__packed__)) SpiceMigrateDataSpiceVmc {
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SpiceMigrateDataCharDevice base;
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} SpiceMigrateDataSpiceVmc;
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static inline int migration_protocol_validate_header(SpiceMigrateDataHeader *header,
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uint32_t magic,
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uint32_t version)
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{
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if (header->magic != magic) {
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spice_error("bad magic %u (!= %u)", header->magic, magic);
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return FALSE;
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}
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if (header->version > version) {
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spice_error("unsupported version %u (> %u)", header->version, version);
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return FALSE;
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}
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return TRUE;
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}
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#endif
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