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migration_protocol: add display channel migration data

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This commit is contained in:
Yonit Halperin 2012-08-06 10:33:44 +03:00
parent 35227cd11f
commit 6b74168871
1 changed files with 73 additions and 0 deletions
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73
server/migration_protocol.h
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@ -19,6 +19,7 @@
#define _H_MIGRATION_PROTOCOL
#include <spice/vd_agent.h>
#include "glz_encoder_dictionary.h"
/* ************************************************
* src-server to dst-server migration data messages
@ -109,6 +110,78 @@ typedef struct __attribute__ ((__packed__)) SpiceMigrateDataMain {
} client2agent;
} SpiceMigrateDataMain;
/* ****************
* display channel
* ***************/
#define SPICE_MIGRATE_DATA_DISPLAY_VERSION 1
#define SPICE_MIGRATE_DATA_DISPLAY_MAGIC (*(uint32_t *)"DCMD")
/*
* TODO: store the cache and dictionary data only in one channel (the
* freezer).
* TODO: optimizations: don't send surfaces information if it will be faster
* to resend the surfaces on-demand.
* */
#define MIGRATE_DATA_DISPLAY_MAX_CACHE_CLIENTS 4
typedef struct __attribute__ ((__packed__)) SpiceMigrateDataDisplay {
uint64_t message_serial;
uint8_t low_bandwidth_setting;
/*
* Synchronizing the shared pixmap cache.
* For now, the cache is not migrated, and instead, we reset it and send
* SPICE_MSG_DISPLAY_INVAL_ALL_PIXMAPS to the client.
* In order to keep the client and server caches consistent:
* The channel which freezed the cache on the src side, unfreezes it
* on the dest side, and increases its generation (see 'reset' in red_client_shared_cach.h).
* In order to enforce that images that are added to the cache by other channels
* will reach the client only after SPICE_MSG_DISPLAY_INVAL_ALL_PIXMAPS,
* we send SPICE_MSG_WAIT_FOR_CHANNELS
* (see the generation mismatch handling in 'add' in red_client_shared_cach.h).
*/
uint8_t pixmap_cache_id;
int64_t pixmap_cache_size;
uint8_t pixmap_cache_freezer;
uint64_t pixmap_cache_clients[MIGRATE_DATA_DISPLAY_MAX_CACHE_CLIENTS];
uint8_t glz_dict_id;
GlzEncDictRestoreData glz_dict_data;
uint32_t surfaces_at_client_ptr; /* reference to MigrateDisplaySurfacesAtClientLossless/Lossy.
Lossy: when jpeg-wan-compression(qemu cmd line)=always
or when jpeg-wan-compression=auto,
and low_bandwidth_setting=TRUE */
} SpiceMigrateDataDisplay;
typedef struct __attribute__ ((__packed__)) SpiceMigrateDataRect {
int32_t left;
int32_t top;
int32_t right;
int32_t bottom;
} SpiceMigrateDataRect;
typedef struct __attribute__ ((__packed__)) MigrateDisplaySurfaceLossless {
uint32_t id;
} MigrateDisplaySurfaceLossless;
typedef struct __attribute__ ((__packed__)) MigrateDisplaySurfaceLossy {
uint32_t id;
SpiceMigrateDataRect lossy_rect;
} MigrateDisplaySurfaceLossy;
typedef struct __attribute__ ((__packed__)) MigrateDisplaySurfacesAtClientLossless {
uint32_t num_surfaces;
MigrateDisplaySurfaceLossless surfaces[0];
} MigrateDisplaySurfacesAtClientLossless;
typedef struct __attribute__ ((__packed__)) MigrateDisplaySurfacesAtClientLossy {
uint32_t num_surfaces;
MigrateDisplaySurfaceLossy surfaces[0];
} MigrateDisplaySurfacesAtClientLossy;
static inline int migration_protocol_validate_header(SpiceMigrateDataHeader *header,
uint32_t magic,
uint32_t version)