net: move vde code from net.c to net/vde.c

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 124 insertions, 0 deletions

diff --git a/net/vde.c b/net/vde.c
new file mode 100644
index 0000000000..4d09967fd9
--- /dev/null
+++ b/net/vde.c
@@ -0,0 +1,124 @@
+/*
+ * 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 "net/vde.h"
+
+#include "config-host.h"
+
+#include <libvdeplug.h>
+
+#include "net.h"
+#include "qemu-char.h"
+#include "qemu-common.h"
+#include "qemu-option.h"
+#include "sysemu.h"
+
+typedef struct VDEState {
+    VLANClientState *vc;
+    VDECONN *vde;
+} VDEState;
+
+static void vde_to_qemu(void *opaque)
+{
+    VDEState *s = opaque;
+    uint8_t buf[4096];
+    int size;
+
+    size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
+    if (size > 0) {
+        qemu_send_packet(s->vc, buf, size);
+    }
+}
+
+static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
+{
+    VDEState *s = vc->opaque;
+    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(VLANClientState *vc)
+{
+    VDEState *s = vc->opaque;
+    qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
+    vde_close(s->vde);
+    qemu_free(s);
+}
+
+static int net_vde_init(VLANState *vlan, const char *model,
+                        const char *name, const char *sock,
+                        int port, const char *group, int mode)
+{
+    VDEState *s;
+    char *init_group = (char *)group;
+    char *init_sock = (char *)sock;
+
+    struct vde_open_args args = {
+        .port = port,
+        .group = init_group,
+        .mode = mode,
+    };
+
+    s = qemu_mallocz(sizeof(VDEState));
+    s->vde = vde_open(init_sock, (char *)"QEMU", &args);
+    if (!s->vde){
+        free(s);
+        return -1;
+    }
+    s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_VDE,
+                                 vlan, NULL, model, name, NULL,
+                                 vde_receive, NULL, NULL,
+                                 vde_cleanup, s);
+    qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
+    snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
+             sock, vde_datafd(s->vde));
+    return 0;
+}
+
+int net_init_vde(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan)
+{
+    const char *sock;
+    const char *group;
+    int port, mode;
+
+    sock  = qemu_opt_get(opts, "sock");
+    group = qemu_opt_get(opts, "group");
+
+    port = qemu_opt_get_number(opts, "port", 0);
+    mode = qemu_opt_get_number(opts, "mode", 0700);
+
+    if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
+        return -1;
+    }
+
+    if (vlan) {
+        vlan->nb_host_devs++;
+    }
+
+    return 0;
+}