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Commit 75e3ea5b authored by Stefano Stabellini's avatar Stefano Stabellini Committed by Boris Ostrovsky
Browse files

xen: introduce the pvcalls interface header 



Introduce the C header file which defines the PV Calls interface. It is
imported from xen/include/public/io/pvcalls.h.

Signed-off-by: default avatarStefano Stabellini <stefano@aporeto.com>
Reviewed-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
CC: konrad.wilk@oracle.com
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
Signed-off-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
parent ef954844

include/xen/interface/io/pvcalls.h

0 → 100644
+121 −0
Original line number Diff line number Diff line 
#ifndef __XEN_PUBLIC_IO_XEN_PVCALLS_H__

#define __XEN_PUBLIC_IO_XEN_PVCALLS_H__



#include <linux/net.h>

#include <xen/interface/io/ring.h>

#include <xen/interface/grant_table.h>



/* "1" means socket, connect, release, bind, listen, accept and poll */

#define XENBUS_FUNCTIONS_CALLS "1"



/*

 * See docs/misc/pvcalls.markdown in xen.git for the full specification:

 * https://xenbits.xen.org/docs/unstable/misc/pvcalls.html

 */

struct pvcalls_data_intf {

    RING_IDX in_cons, in_prod, in_error;



    uint8_t pad1[52];



    RING_IDX out_cons, out_prod, out_error;



    uint8_t pad2[52];



    RING_IDX ring_order;

    grant_ref_t ref[];

};

DEFINE_XEN_FLEX_RING(pvcalls);



#define PVCALLS_SOCKET         0

#define PVCALLS_CONNECT        1

#define PVCALLS_RELEASE        2

#define PVCALLS_BIND           3

#define PVCALLS_LISTEN         4

#define PVCALLS_ACCEPT         5

#define PVCALLS_POLL           6



struct xen_pvcalls_request {

    uint32_t req_id; /* private to guest, echoed in response */

    uint32_t cmd;    /* command to execute */

    union {

        struct xen_pvcalls_socket {

            uint64_t id;

            uint32_t domain;

            uint32_t type;

            uint32_t protocol;

        } socket;

        struct xen_pvcalls_connect {

            uint64_t id;

            uint8_t addr[28];

            uint32_t len;

            uint32_t flags;

            grant_ref_t ref;

            uint32_t evtchn;

        } connect;

        struct xen_pvcalls_release {

            uint64_t id;

            uint8_t reuse;

        } release;

        struct xen_pvcalls_bind {

            uint64_t id;

            uint8_t addr[28];

            uint32_t len;

        } bind;

        struct xen_pvcalls_listen {

            uint64_t id;

            uint32_t backlog;

        } listen;

        struct xen_pvcalls_accept {

            uint64_t id;

            uint64_t id_new;

            grant_ref_t ref;

            uint32_t evtchn;

        } accept;

        struct xen_pvcalls_poll {

            uint64_t id;

        } poll;

        /* dummy member to force sizeof(struct xen_pvcalls_request)

         * to match across archs */

        struct xen_pvcalls_dummy {

            uint8_t dummy[56];

        } dummy;

    } u;

};



struct xen_pvcalls_response {

    uint32_t req_id;

    uint32_t cmd;

    int32_t ret;

    uint32_t pad;

    union {

        struct _xen_pvcalls_socket {

            uint64_t id;

        } socket;

        struct _xen_pvcalls_connect {

            uint64_t id;

        } connect;

        struct _xen_pvcalls_release {

            uint64_t id;

        } release;

        struct _xen_pvcalls_bind {

            uint64_t id;

        } bind;

        struct _xen_pvcalls_listen {

            uint64_t id;

        } listen;

        struct _xen_pvcalls_accept {

            uint64_t id;

        } accept;

        struct _xen_pvcalls_poll {

            uint64_t id;

        } poll;

        struct _xen_pvcalls_dummy {

            uint8_t dummy[8];

        } dummy;

    } u;

};



DEFINE_RING_TYPES(xen_pvcalls, struct xen_pvcalls_request,

                  struct xen_pvcalls_response);



#endif

include/xen/interface/io/ring.h

+2 −0
Original line number Diff line number Diff line
@@ -9,6 +9,8 @@ 
#ifndef __XEN_PUBLIC_IO_RING_H__

#define __XEN_PUBLIC_IO_RING_H__



#include <xen/interface/grant_table.h>



typedef unsigned int RING_IDX;



/* Round a 32-bit unsigned constant down to the nearest power of two. */