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[client] transport: recover incompatible sessions

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Report expected and current protocol versions through the transport
interface and expose session-independent recovery operations.

Offer recovery from the version mismatch popup, publish requests through
the reserved IVSHMEM channel, and select the validated SPICE fallback.
This commit is contained in:
Geoffrey McRae
2026-08-11 23:31:51 +10:00
parent bacf376305
commit 574e8edbae
9 changed files with 1509 additions and 122 deletions
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82
client/include/interface/transport.h
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@@ -70,6 +70,79 @@ enum
typedef uint32_t LG_TransportFeatureFlags;
typedef struct LG_VersionMismatch
{
bool valid;
char component[16];
uint32_t expectedVersion;
uint32_t currentVersion;
}
LG_VersionMismatch;
#define LG_RECOVERY_MAX_VERSIONS 4
enum
{
LG_RECOVERY_CAP_DISPLAY = 0x1,
};
typedef uint32_t LG_RecoveryCaps;
typedef enum LG_RecoveryRequest
{
LG_RECOVERY_REQ_NONE,
LG_RECOVERY_REQ_NORMAL,
LG_RECOVERY_REQ_RECOVERY,
}
LG_RecoveryRequest;
typedef enum LG_RecoveryState
{
LG_RECOVERY_STATE_UNKNOWN,
LG_RECOVERY_STATE_NORMAL,
LG_RECOVERY_STATE_SWITCHING,
LG_RECOVERY_STATE_ACTIVE,
LG_RECOVERY_STATE_FAILED,
}
LG_RecoveryState;
typedef enum LG_RecoveryError
{
LG_RECOVERY_ERR_NONE,
LG_RECOVERY_ERR_UNSUPPORTED,
LG_RECOVERY_ERR_HELPER_UNAVAILABLE,
LG_RECOVERY_ERR_TOPOLOGY_FAILED,
LG_RECOVERY_ERR_NO_FALLBACK_DISPLAY,
}
LG_RecoveryError;
typedef struct LG_RecoveryVersion
{
char component[16];
uint32_t version;
}
LG_RecoveryVersion;
typedef struct LG_RecoveryInfo
{
uint32_t abiVersion;
LG_RecoveryCaps capabilities;
uint64_t instance;
uint32_t heartbeat;
bool uuidValid;
uint8_t uuid[16];
char producerVersion[64];
uint32_t versionCount;
LG_RecoveryVersion versions[LG_RECOVERY_MAX_VERSIONS];
uint32_t requestSerial;
LG_RecoveryRequest request;
uint32_t ackSerial;
LG_RecoveryRequest ackRequest;
LG_RecoveryState state;
LG_RecoveryError error;
}
LG_RecoveryInfo;
typedef struct LG_TransportSession
{
char version[32];
@@ -87,7 +160,7 @@ typedef struct LG_TransportSession
uint8_t cores;
uint8_t sockets;
uint32_t remoteVersion;
LG_VersionMismatch versionMismatch;
}
LG_TransportSession;
@@ -346,6 +419,13 @@ typedef struct LG_TransportOps
const LG_ClipboardOps *(*getClipboardOps)(LG_Transport * transport,
void ** opaque);
/* Recovery operations are independent of a transport session and may be
* used after create whenever the backing transport advertises them. */
LG_TransportStatus (*getRecoveryInfo)(LG_Transport * transport,
LG_RecoveryInfo * info);
LG_TransportStatus (*requestRecovery)(LG_Transport * transport,
LG_RecoveryRequest request, uint32_t * serial);
LG_TransportStatus (*sendControl)(LG_Transport * transport,
const LG_TransportControl * control, LG_TransportControlToken * token);
LG_TransportStatus (*controlStatus)(LG_Transport * transport,