Commit 62db0faf authored by Stefano Stabellini's avatar Stefano Stabellini Committed by Juergen Gross
Browse files

xen: sync xs_wire.h header with upstream xen 



Sync the xs_wire.h header file in Linux with the one in Xen.

Signed-off-by: default avatarStefano Stabellini <stefano.stabellini@xilinx.com>
Reviewed-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20220513211938.719341-1-sstabellini@kernel.org


Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
parent 1591a65f

include/xen/interface/io/xs_wire.h

+33 −4
Original line number Diff line number Diff line
@@ -10,7 +10,8 @@ 


enum xsd_sockmsg_type

{

    XS_DEBUG,

    XS_CONTROL,

#define XS_DEBUG XS_CONTROL

    XS_DIRECTORY,

    XS_READ,

    XS_GET_PERMS,
@@ -30,8 +31,13 @@ enum xsd_sockmsg_type 
    XS_IS_DOMAIN_INTRODUCED,

    XS_RESUME,

    XS_SET_TARGET,

    XS_RESTRICT,

    XS_RESET_WATCHES,

    /* XS_RESTRICT has been removed */

    XS_RESET_WATCHES = XS_SET_TARGET + 2,

    XS_DIRECTORY_PART,



    XS_TYPE_COUNT,      /* Number of valid types. */



    XS_INVALID = 0xffff /* Guaranteed to remain an invalid type */

};



#define XS_WRITE_NONE "NONE"
@@ -59,7 +65,8 @@ static struct xsd_errors xsd_errors[] __attribute__((unused)) = { 
    XSD_ERROR(EROFS),

    XSD_ERROR(EBUSY),

    XSD_ERROR(EAGAIN),

    XSD_ERROR(EISCONN)

    XSD_ERROR(EISCONN),

    XSD_ERROR(E2BIG)

};



struct xsd_sockmsg
@@ -87,9 +94,31 @@ struct xenstore_domain_interface { 
    char rsp[XENSTORE_RING_SIZE]; /* Replies and async watch events. */

    XENSTORE_RING_IDX req_cons, req_prod;

    XENSTORE_RING_IDX rsp_cons, rsp_prod;

    uint32_t server_features; /* Bitmap of features supported by the server */

    uint32_t connection;

    uint32_t error;

};



/* Violating this is very bad.  See docs/misc/xenstore.txt. */

#define XENSTORE_PAYLOAD_MAX 4096



/* Violating these just gets you an error back */

#define XENSTORE_ABS_PATH_MAX 3072

#define XENSTORE_REL_PATH_MAX 2048



/* The ability to reconnect a ring */

#define XENSTORE_SERVER_FEATURE_RECONNECTION 1

/* The presence of the "error" field in the ring page */

#define XENSTORE_SERVER_FEATURE_ERROR        2



/* Valid values for the connection field */

#define XENSTORE_CONNECTED 0 /* the steady-state */

#define XENSTORE_RECONNECT 1 /* guest has initiated a reconnect */



/* Valid values for the error field */

#define XENSTORE_ERROR_NONE    0 /* No error */

#define XENSTORE_ERROR_COMM    1 /* Communication problem */

#define XENSTORE_ERROR_RINGIDX 2 /* Invalid ring index */

#define XENSTORE_ERROR_PROTO   3 /* Protocol violation (payload too long) */



#endif /* _XS_WIRE_H */