LXR linux/include/xen/interface/io/pvcalls.h

   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
 122