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/*
Copyright (C) 2012 Red Hat, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _H_MIGRATION_PROTOCOL
#define _H_MIGRATION_PROTOCOL
/* ************************************************
* src-server to dst-server migration data messages
* ************************************************/
/* increase the version when the version of any
* of the migration data messages is increased */
#define SPICE_MIGRATION_PROTOCOL_VERSION ~0
typedef struct __attribute__ ((__packed__)) SpiceMigrateDataHeader {
uint32_t magic;
uint32_t version;
} SpiceMigrateDataHeader;
/* ********************
* Char device base
* *******************/
/* increase the version of descendent char devices when this
* version is increased */
#define SPICE_MIGRATE_DATA_CHAR_DEVICE_VERSION 1
/* Should be the first field of any of the char_devices migration data (see write_data_ptr) */
typedef struct __attribute__ ((__packed__)) SpiceMigrateDataCharDevice {
uint32_t version;
uint8_t connected;
uint32_t num_client_tokens;
uint32_t num_send_tokens;
uint32_t write_size; /* write to dev */
uint32_t write_num_client_tokens; /* how many messages from the client are part of the write_data */
uint32_t write_data_ptr; /* offset from
SpiceMigrateDataCharDevice - sizeof(SpiceMigrateDataHeader) */
} SpiceMigrateDataCharDevice;
/* ********
* spicevmc
* ********/
#define SPICE_MIGRATE_DATA_SPICEVMC_VERSION 1 /* NOTE: increase version when CHAR_DEVICE_VERSION
is increased */
#define SPICE_MIGRATE_DATA_SPICEVMC_MAGIC (*(uint32_t *)"SVMD")
typedef struct __attribute__ ((__packed__)) SpiceMigrateDataSpiceVmc {
SpiceMigrateDataCharDevice base;
} SpiceMigrateDataSpiceVmc;
/* *********
* smartcard
* *********/
#define SPICE_MIGRATE_DATA_SMARTCARD_VERSION 1 /* NOTE: increase version when CHAR_DEVICE_VERSION
is increased */
#define SPICE_MIGRATE_DATA_SMARTCARD_MAGIC (*(uint32_t *)"SCMD")
typedef struct __attribute__ ((__packed__)) SpiceMigrateDataSmartcard {
SpiceMigrateDataCharDevice base;
uint8_t reader_added;
uint32_t read_size; /* partial data read from dev */
uint32_t read_data_ptr;
} SpiceMigrateDataSmartcard;
static inline int migration_protocol_validate_header(SpiceMigrateDataHeader *header,
uint32_t magic,
uint32_t version)
{
if (header->magic != magic) {
spice_error("bad magic %u (!= %u)", header->magic, magic);
return FALSE;
}
if (header->version > version) {
spice_error("unsupported version %u (> %u)", header->version, version);
return FALSE;
}
return TRUE;
}
#endif
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