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-rw-r--r--src/net/vde.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/src/net/vde.c b/src/net/vde.c
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index 0000000..4475d92
--- /dev/null
+++ b/src/net/vde.c
@@ -0,0 +1,128 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "config-host.h"
+
+#include <libvdeplug.h>
+
+#include "net/net.h"
+#include "clients.h"
+#include "qemu-common.h"
+#include "qemu/option.h"
+#include "qemu/main-loop.h"
+
+typedef struct VDEState {
+ NetClientState nc;
+ VDECONN *vde;
+} VDEState;
+
+static void vde_to_qemu(void *opaque)
+{
+ VDEState *s = opaque;
+ uint8_t buf[NET_BUFSIZE];
+ int size;
+
+ size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
+ if (size > 0) {
+ qemu_send_packet(&s->nc, buf, size);
+ }
+}
+
+static ssize_t vde_receive(NetClientState *nc, const uint8_t *buf, size_t size)
+{
+ VDEState *s = DO_UPCAST(VDEState, nc, nc);
+ ssize_t ret;
+
+ do {
+ ret = vde_send(s->vde, (const char *)buf, size, 0);
+ } while (ret < 0 && errno == EINTR);
+
+ return ret;
+}
+
+static void vde_cleanup(NetClientState *nc)
+{
+ VDEState *s = DO_UPCAST(VDEState, nc, nc);
+ qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
+ vde_close(s->vde);
+}
+
+static NetClientInfo net_vde_info = {
+ .type = NET_CLIENT_OPTIONS_KIND_VDE,
+ .size = sizeof(VDEState),
+ .receive = vde_receive,
+ .cleanup = vde_cleanup,
+};
+
+static int net_vde_init(NetClientState *peer, const char *model,
+ const char *name, const char *sock,
+ int port, const char *group, int mode)
+{
+ NetClientState *nc;
+ VDEState *s;
+ VDECONN *vde;
+ char *init_group = (char *)group;
+ char *init_sock = (char *)sock;
+
+ struct vde_open_args args = {
+ .port = port,
+ .group = init_group,
+ .mode = mode,
+ };
+
+ vde = vde_open(init_sock, (char *)"QEMU", &args);
+ if (!vde){
+ return -1;
+ }
+
+ nc = qemu_new_net_client(&net_vde_info, peer, model, name);
+
+ snprintf(nc->info_str, sizeof(nc->info_str), "sock=%s,fd=%d",
+ sock, vde_datafd(vde));
+
+ s = DO_UPCAST(VDEState, nc, nc);
+
+ s->vde = vde;
+
+ qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
+
+ return 0;
+}
+
+int net_init_vde(const NetClientOptions *opts, const char *name,
+ NetClientState *peer, Error **errp)
+{
+ /* FIXME error_setg(errp, ...) on failure */
+ const NetdevVdeOptions *vde;
+
+ assert(opts->type == NET_CLIENT_OPTIONS_KIND_VDE);
+ vde = opts->u.vde;
+
+ /* missing optional values have been initialized to "all bits zero" */
+ if (net_vde_init(peer, "vde", name, vde->sock, vde->port, vde->group,
+ vde->has_mode ? vde->mode : 0700) == -1) {
+ return -1;
+ }
+
+ return 0;
+}
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