VSOCK skeleton

1 files changed, 274 insertions, 0 deletions

diff --git a/usr/src/uts/common/io/vsock.c b/usr/src/uts/common/io/vsock.c
new file mode 100644
index 0000000000..d417ea7ff2
--- /dev/null
+++ b/usr/src/uts/common/io/vsock.c
@@ -0,0 +1,274 @@
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source.  A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ */
+
+/*
+ * Copyright 2021 Joyent, Inc.
+ */
+
+#include <sys/strsubr.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/modctl.h>
+#include <sys/cmn_err.h>
+#include <sys/strsun.h>
+#include <sys/sunddi.h>
+
+typedef struct vsock_sock {
+	int foo;
+} vsock_sock_t;
+
+static sock_lower_handle_t vsock_create(int, int, int, sock_downcalls_t **,
+    uint_t *, int *, int, cred_t *);
+static vsock_sock_t * vsock_do_open(int flags);
+static void vsock_activate(sock_lower_handle_t proto_handle,
+    sock_upper_handle_t sock_handle, sock_upcalls_t *sock_upcalls, int flags,
+    cred_t *cr);
+static int vsock_accept(sock_lower_handle_t proto_handle,
+    sock_lower_handle_t lproto_handle, sock_upper_handle_t sock_handle,
+    cred_t *cr);
+static int vsock_bind(sock_lower_handle_t proto_handle, struct sockaddr *sa,
+   socklen_t len, cred_t *cr);
+static int
+vsock_listen(sock_lower_handle_t proto_handle, int backlog, cred_t *cr);
+static int
+vsock_connect(sock_lower_handle_t proto_handle, const struct sockaddr *sa,
+   socklet_t len, sock_connid_t *id, cred_t *cr);
+static int
+vsock_getpeername(sock_lower_handle_t proto_handle, struct sockaddr *addr,
+   socklen_t *addrlenp, cred_t *cr);
+static int
+vsock_getsockname(sock_lower_handle_t proto_handle, struct sockaddr *addr,
+    socklen_t *addrlenp, cred_t *cr);
+static int
+vsock_getsockopt(sock_lower_handle_t proto_handle, int level, int option_name,
+    void *optvalp, socklen_t *optlen, cred_t *cr);
+static int
+vsock_setsockopt(sock_lower_handle_t proto_handle, int level, int option_name,
+     const void *optvalp, socklen_t optlen, cred_t *cr);
+static int
+vsock_send(sock_lower_handle_t proto_handle, mblk_t *mp, struct nmsghdr *msg,
+    cred_t *cr);
+static int
+vsock_send_uio(sock_lower_handle_t proto_handle, uio_t *uiop,
+    struct nmsghdr *msg, cred_t *cr);
+static int
+vsock_recv_uio(sock_lower_handle_t proto_handle, uio_t *uiop,
+    struct nmsghdr *msg, cred_t *cr);
+static int 
+vosck_poll(sock_lower_handle_t proto_handle, short events, int anyyet,
+    cred_t *cr);
+static int
+vsock_shutdown(sock_lower_handle_t proto_handle, int how, cred_t *cr);
+static int
+vsock_setflowctrl(sock_lower_handle_t proto_handle);
+static int
+vsock_ioctl(sock_lower_handle_t proto_handle, int cmd, intptr_t arg,
+   int mode, int32_t *rvalp, cred_t *cr);
+
+
+static smod_reg_t sinfo = {
+	SOCKMOD_VERSION,
+	"vsock",
+	SOCK_UC_VERSION,
+	SOCK_DC_VERSION,
+	sock_create,
+	NULL,
+};
+
+static struct modlsockmod sockmod = {
+	&mod_sockmodops, "AF_VSOCK socket module", &sinfo
+};
+
+static struct modlinkage ml = {
+	MODREV_1,
+	&sockmod,
+	NULL
+};
+
+static sock_downcalls_t sock_vsock_downcalls = {
+	vsock_activate,
+	vsock_accept,
+	vsock_bind,
+	vsock_listen,
+	vsock_connect,
+	vsock_getpeername,
+	vsock_getsockname,
+	vsock_getsockopt,
+	vsock_setsockopt,
+	vsock_send,
+	vsock_send_uio,
+	vsock_recv_uio,
+	vosck_poll,
+	vsock_shutdown,
+	vsock_setflowctrl,
+	vsock_ioctl,
+	vsock_close,
+};
+
+int
+_init(void)
+{
+	int rc;
+
+	rc = mod_install(&ml);
+	return (rc);
+}
+
+int
+_info(struct modinfo *modinfop)
+{
+	return (mod_info(&ml, modinfop));
+}
+
+int
+_fini(void)
+{
+	int rc;
+
+	rc = mod_remove(&ml);
+	return (rc);
+}
+
+static sock_lower_handle_t
+vsock_create(int family, int type, int proto, sock_downcalls_t **sock_downcalls,
+    uint_t *smodep, int *errorp, int flags, cred_t *credp)
+{
+	vsock_sock_t *vsock;
+
+	if (family != AF_VSOCK || type != SOCK_STREAM || proto != 0) {
+		*errorp = EPROTONOSUPPORT;
+		return (NULL);
+	}
+
+	*sock_downcalls = &sock_vsock_downcalls;
+	*smodep = SM_CONNREQUIRED | SM_EXDATA | SM_ACCEPTSUPP;
+	vsock = vsock_do_open(flags);
+	*errorp = (vsock != NULL) ? 0 : ENOMEM;
+	return ((sock_lower_handle_t)vsock);
+}
+
+static vsock_sock_t *
+vsock_do_open(int flags)
+{
+	return (NULL);
+}
+
+static void
+vsock_activate(sock_lower_handle_t proto_handle,
+    sock_upper_handle_t sock_handle, sock_upcalls_t *sock_upcalls, int flags,
+    cred_t *cr)
+{
+}
+
+static int
+vsock_accept(sock_lower_handle_t proto_handle,
+    sock_lower_handle_t lproto_handle, sock_upper_handle_t sock_handle,
+    cred_t *cr)
+	return (ECONNABORTED);
+}
+
+static int
+vsock_bind(sock_lower_handle_t proto_handle, struct sockaddr *sa,
+   socklen_t len, cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+static int
+vsock_listen(sock_lower_handle_t proto_handle, int backlog, cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+static int
+vsock_connect(sock_lower_handle_t proto_handle, const struct sockaddr *sa,
+   socklet_t len, sock_connid_t *id, cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+static int
+vsock_getpeername(sock_lower_handle_t proto_handle, struct sockaddr *addr,
+   socklen_t *addrlenp, cred_t *cr)
+{
+	return (ENOTCONN);
+}
+
+static int
+vsock_getsockname(sock_lower_handle_t proto_handle, struct sockaddr *addr,
+    socklen_t *addrlenp, cred_t *cr)
+{
+	return (ENOTCONN);
+}
+
+static int
+vsock_getsockopt(sock_lower_handle_t proto_handle, int level, int option_name,
+    void *optvalp, socklen_t *optlen, cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+static int
+vsock_setsockopt(sock_lower_handle_t proto_handle, int level, int option_name,
+     const void *optvalp, socklen_t optlen, cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+
+static int
+vsock_send(sock_lower_handle_t proto_handle, mblk_t *mp, struct nmsghdr *msg,
+    cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+
+static int
+vsock_send_uio(sock_lower_handle_t proto_handle, uio_t *uiop,
+    struct nmsghdr *msg, cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+static int
+vsock_recv_uio(sock_lower_handle_t proto_handle, uio_t *uiop,
+    struct nmsghdr *msg, cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+static int 
+vosck_poll(sock_lower_handle_t proto_handle, short events, int anyyet,
+    cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+
+static int
+vsock_shutdown(sock_lower_handle_t proto_handle, int how, cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}
+
+static int
+vsock_setflowctrl(sock_lower_handle_t proto_handle)
+{
+	return (EOPNOTSUPP);
+}
+
+static int
+vsock_ioctl(sock_lower_handle_t proto_handle, int cmd, intptr_t arg,
+   int mode, int32_t *rvalp, cred_t *cr)
+{
+	return (EOPNOTSUPP);
+}