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migration_protocol: add migration data for the main channel (mainly for the agent)

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This commit is contained in:
Yonit Halperin 2012-08-05 15:05:20 +03:00
parent d866114d90
commit 443b2d4270
1 changed files with 33 additions and 0 deletions
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33
server/migration_protocol.h
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@ -18,6 +18,8 @@
#ifndef _H_MIGRATION_PROTOCOL
#define _H_MIGRATION_PROTOCOL
#include <spice/vd_agent.h>
/* ************************************************
* src-server to dst-server migration data messages
* ************************************************/
@ -76,6 +78,37 @@ typedef struct __attribute__ ((__packed__)) SpiceMigrateDataSmartcard {
uint32_t read_data_ptr;
} SpiceMigrateDataSmartcard;
/* *********************************
* main channel (mainly guest agent)
* *********************************/
#define SPICE_MIGRATE_DATA_MAIN_VERSION 1 /* NOTE: increase version when CHAR_DEVICE_VERSION
is increased */
#define SPICE_MIGRATE_DATA_MAIN_MAGIC (*(uint32_t *)"MNMD")
typedef struct __attribute__ ((__packed__)) SpiceMigrateDataMain {
SpiceMigrateDataCharDevice agent_base;
uint8_t client_agent_started; /* for discarding messages */
struct __attribute__ ((__packed__)) {
/* partial data read from device. Such data is stored only
* if the chunk header or the entire msg header haven't yet been read completely.
* Once the headers are read, partial reads of chunks can be sent as
* smaller chunks to the client, without the roundtrip overhead of migration data */
uint32_t chunk_header_size;
VDIChunkHeader chunk_header;
uint8_t msg_header_done;
uint32_t msg_header_partial_len;
uint32_t msg_header_ptr;
uint32_t msg_remaining;
uint8_t msg_filter_result;
} agent2client;
struct __attribute__ ((__packed__)) {
uint32_t msg_remaining;
uint8_t msg_filter_result;
} client2agent;
} SpiceMigrateDataMain;
static inline int migration_protocol_validate_header(SpiceMigrateDataHeader *header,
uint32_t magic,
uint32_t version)