1 /* SPDX-License-Identifier: MIT */
2
3 #ifndef __XEN_PUBLIC_IO_XEN_PVCALLS_H__
4 #define __XEN_PUBLIC_IO_XEN_PVCALLS_H__
5
6 #include <linux/net.h>
7 #include <xen/interface/io/ring.h>
8 #include <xen/interface/grant_table.h>
9
10 /* "1" means socket, connect, release, bind, listen, accept and poll */
11 #define XENBUS_FUNCTIONS_CALLS "1"
12
13 /*
14 * See docs/misc/pvcalls.markdown in xen.git for the full specification:
15 * https://xenbits.xen.org/docs/unstable/misc/pvcalls.html
16 */
17 struct pvcalls_data_intf {
18 RING_IDX in_cons, in_prod, in_error;
19
20 uint8_t pad1[52];
21
22 RING_IDX out_cons, out_prod, out_error;
23
24 uint8_t pad2[52];
25
26 RING_IDX ring_order;
27 grant_ref_t ref[];
28 };
29 DEFINE_XEN_FLEX_RING(pvcalls);
30
31 #define PVCALLS_SOCKET 0
32 #define PVCALLS_CONNECT 1
33 #define PVCALLS_RELEASE 2
34 #define PVCALLS_BIND 3
35 #define PVCALLS_LISTEN 4
36 #define PVCALLS_ACCEPT 5
37 #define PVCALLS_POLL 6
38
39 struct xen_pvcalls_request {
40 uint32_t req_id; /* private to guest, echoed in response */
41 uint32_t cmd; /* command to execute */
42 union {
43 struct xen_pvcalls_socket {
44 uint64_t id;
45 uint32_t domain;
46 uint32_t type;
47 uint32_t protocol;
48 } socket;
49 struct xen_pvcalls_connect {
50 uint64_t id;
51 uint8_t addr[28];
52 uint32_t len;
53 uint32_t flags;
54 grant_ref_t ref;
55 uint32_t evtchn;
56 } connect;
57 struct xen_pvcalls_release {
58 uint64_t id;
59 uint8_t reuse;
60 } release;
61 struct xen_pvcalls_bind {
62 uint64_t id;
63 uint8_t addr[28];
64 uint32_t len;
65 } bind;
66 struct xen_pvcalls_listen {
67 uint64_t id;
68 uint32_t backlog;
69 } listen;
70 struct xen_pvcalls_accept {
71 uint64_t id;
72 uint64_t id_new;
73 grant_ref_t ref;
74 uint32_t evtchn;
75 } accept;
76 struct xen_pvcalls_poll {
77 uint64_t id;
78 } poll;
79 /* dummy member to force sizeof(struct xen_pvcalls_request)
80 * to match across archs */
81 struct xen_pvcalls_dummy {
82 uint8_t dummy[56];
83 } dummy;
84 } u;
85 };
86
87 struct xen_pvcalls_response {
88 uint32_t req_id;
89 uint32_t cmd;
90 int32_t ret;
91 uint32_t pad;
92 union {
93 struct _xen_pvcalls_socket {
94 uint64_t id;
95 } socket;
96 struct _xen_pvcalls_connect {
97 uint64_t id;
98 } connect;
99 struct _xen_pvcalls_release {
100 uint64_t id;
101 } release;
102 struct _xen_pvcalls_bind {
103 uint64_t id;
104 } bind;
105 struct _xen_pvcalls_listen {
106 uint64_t id;
107 } listen;
108 struct _xen_pvcalls_accept {
109 uint64_t id;
110 } accept;
111 struct _xen_pvcalls_poll {
112 uint64_t id;
113 } poll;
114 struct _xen_pvcalls_dummy {
115 uint8_t dummy[8];
116 } dummy;
117 } u;
118 };
119
120 DEFINE_RING_TYPES(xen_pvcalls, struct xen_pvcalls_request,
121 struct xen_pvcalls_response);
122
123 #endif
124
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