1#ifndef __XEN_PUBLIC_IO_XEN_PVCALLS_H__
  2#define __XEN_PUBLIC_IO_XEN_PVCALLS_H__
  3
  4#include <linux/net.h>
  5#include <xen/interface/io/ring.h>
  6#include <xen/interface/grant_table.h>
  7
  8/* "1" means socket, connect, release, bind, listen, accept and poll */
  9#define XENBUS_FUNCTIONS_CALLS "1"
 10
 11/*
 12 * See docs/misc/pvcalls.markdown in xen.git for the full specification:
 13 * https://xenbits.xen.org/docs/unstable/misc/pvcalls.html
 14 */
 15struct pvcalls_data_intf {
 16    RING_IDX in_cons, in_prod, in_error;
 17
 18    uint8_t pad1[52];
 19
 20    RING_IDX out_cons, out_prod, out_error;
 21
 22    uint8_t pad2[52];
 23
 24    RING_IDX ring_order;
 25    grant_ref_t ref[];
 26};
 27DEFINE_XEN_FLEX_RING(pvcalls);
 28
 29#define PVCALLS_SOCKET         0
 30#define PVCALLS_CONNECT        1
 31#define PVCALLS_RELEASE        2
 32#define PVCALLS_BIND           3
 33#define PVCALLS_LISTEN         4
 34#define PVCALLS_ACCEPT         5
 35#define PVCALLS_POLL           6
 36
 37struct xen_pvcalls_request {
 38    uint32_t req_id; /* private to guest, echoed in response */
 39    uint32_t cmd;    /* command to execute */
 40    union {
 41        struct xen_pvcalls_socket {
 42            uint64_t id;
 43            uint32_t domain;
 44            uint32_t type;
 45            uint32_t protocol;
 46        } socket;
 47        struct xen_pvcalls_connect {
 48            uint64_t id;
 49            uint8_t addr[28];
 50            uint32_t len;
 51            uint32_t flags;
 52            grant_ref_t ref;
 53            uint32_t evtchn;
 54        } connect;
 55        struct xen_pvcalls_release {
 56            uint64_t id;
 57            uint8_t reuse;
 58        } release;
 59        struct xen_pvcalls_bind {
 60            uint64_t id;
 61            uint8_t addr[28];
 62            uint32_t len;
 63        } bind;
 64        struct xen_pvcalls_listen {
 65            uint64_t id;
 66            uint32_t backlog;
 67        } listen;
 68        struct xen_pvcalls_accept {
 69            uint64_t id;
 70            uint64_t id_new;
 71            grant_ref_t ref;
 72            uint32_t evtchn;
 73        } accept;
 74        struct xen_pvcalls_poll {
 75            uint64_t id;
 76        } poll;
 77        /* dummy member to force sizeof(struct xen_pvcalls_request)
 78         * to match across archs */
 79        struct xen_pvcalls_dummy {
 80            uint8_t dummy[56];
 81        } dummy;
 82    } u;
 83};
 84
 85struct xen_pvcalls_response {
 86    uint32_t req_id;
 87    uint32_t cmd;
 88    int32_t ret;
 89    uint32_t pad;
 90    union {
 91        struct _xen_pvcalls_socket {
 92            uint64_t id;
 93        } socket;
 94        struct _xen_pvcalls_connect {
 95            uint64_t id;
 96        } connect;
 97        struct _xen_pvcalls_release {
 98            uint64_t id;
 99        } release;
100        struct _xen_pvcalls_bind {
101            uint64_t id;
102        } bind;
103        struct _xen_pvcalls_listen {
104            uint64_t id;
105        } listen;
106        struct _xen_pvcalls_accept {
107            uint64_t id;
108        } accept;
109        struct _xen_pvcalls_poll {
110            uint64_t id;
111        } poll;
112        struct _xen_pvcalls_dummy {
113            uint8_t dummy[8];
114        } dummy;
115    } u;
116};
117
118DEFINE_RING_TYPES(xen_pvcalls, struct xen_pvcalls_request,
119                  struct xen_pvcalls_response);
120
121#endif