--- /dev/null
+/*
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National
+ * Science Foundation and the Department of Energy.
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico. You can find out more at
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Lei Xia <lxia@northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Lei Xia <lxia@northwestern.edu>
+ *
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+//backend device for Virtio NIC
+
+#include <palacios/vmm_vnet.h>
+#include <palacios/vmm.h>
+#include <palacios/vmm_dev_mgr.h>
+#include <devices/lnx_virtio_pci.h>
+#include <palacios/vm_guest_mem.h>
+#include <devices/pci.h>
+
+struct vnet_nic_state {
+ char mac[6];
+
+
+};
+
+//used when virtio_nic get a packet from guest and send it to the backend
+// send packet to all of the virtio nic devices other than the sender
+static int send(uint8_t * buf, uint32_t len, void * private_data, struct vm_device *dest_dev){
+ PrintDebug("Virito NIC: In vnet_send: guest net state %p\n", private_data);
+
+ v3_vnet_send_rawpkt(buf, len, private_data);
+ return 0;
+}
+
+static int receive(uint8_t * buf, uint32_t count, void * private_data, struct vm_device *src_dev){
+
+ return 0;
+}
+
+
+static struct v3_dev_net_ops net_ops = {
+ .send = send,
+ .receive = receive,
+};
+
+
+#if 0
+static int input(struct v3_vm_info *info, uchar_t * buf, uint_t len, void * private_data){
+ PrintDebug("Virito NIC: In virtio_input: guest net state %p\n", private_data);
+
+ return __virtio_dev_send(buf, len, private_data);
+}
+
+
+//register a virtio device to the vnet as backend
+void register_to_vnet(struct vm_device *dev,
+ char *dev_name,
+ uchar_t mac[6]){
+ struct virtio_net_state * net_state;
+ struct virtio_dev_state *virtio_state = (struct virtio_dev_state *)dev->private_data;
+ uchar_t tapmac[6] = {0x00,0x02,0x55,0x67,0x42,0x39}; //for Intel-VT test HW
+ //uchar_t tapmac[6] = {0x6e,0xa8,0x75,0xf4,0x82,0x95};
+ uchar_t dstmac[6] = {0xff,0xff,0xff,0xff,0xff,0xff};
+ uchar_t zeromac[6] = {0,0,0,0,0,0};
+
+
+ net_state = (struct virtio_net_state *)V3_Malloc(sizeof(struct virtio_net_state));
+ memset(net_state, 0, sizeof(struct virtio_net_state));
+ net_state->net_ops = (struct v3_dev_net_ops *)V3_Malloc(sizeof(struct v3_dev_net_ops));
+ net_state->net_ops->send = &vnet_send;
+ net_state->net_ops->receive = &vnet_receive;
+ net_state->dev = dev;
+
+ register_dev(virtio_state, net_state);
+
+ PrintDebug("Virtio NIC register Device %s: queue size: %d, %d\n", dev->name,
+ net_state->rx_vq.queue_size, net_state->tx_vq.queue_size);
+ PrintDebug("Virtio NIC: connect virtio device %s, state %p, to vnet\n", dev->name, net_state);
+
+ int idx = vnet_register_device(dev, dev_name, mac, &virtio_input, net_state);
+ //vnet_add_route_entry(zeromac, dstmac, MAC_ANY, MAC_NONE, idx, LINK_INTERFACE, -1, LINK_INTERFACE);
+ if (!strcmp(dev_name, "net_virtiodom0")){
+ vnet_add_route_entry(zeromac, tapmac, MAC_ANY, MAC_NONE, idx, LINK_INTERFACE, -1, LINK_INTERFACE);
+ vnet_add_route_entry(zeromac, dstmac, MAC_ANY, MAC_NONE, idx, LINK_INTERFACE, -1, LINK_INTERFACE);
+ }
+ if (!strcmp(dev_name, "net_virtio"))
+ vnet_add_route_entry(tapmac, zeromac, MAC_NONE, MAC_ANY, idx, LINK_INTERFACE, -1, LINK_INTERFACE);
+
+
+ v3_vnet_add_node(dev_name, mac, input, priv_data);
+ struct v3_vnet_route route;
+ //add default route
+ memset(&route, 0, sizeof(struct v3_vnet_route));
+ memcpy(&route.dest_mac, mac, 6);
+ route.src_mac_qual = MAC_ANY;
+ route.dest_mac_qual = MAC_NONE;
+ route.link_idx = idx;
+ route.link_type = LINK_EDGE;
+ route.src_link_idx = -1;
+ route.src_type = LINK_ANY;
+ v3_vnet_add_route(&route);
+
+ char mac
+ memset(&route, 0, sizeof(struct v3_vnet_route));
+ memcpy(&route.dest_mac, mac, 6);
+ route.src_mac_qual = MAC_ANY;
+ route.dest_mac_qual = MAC_NONE;
+ route.link_idx = idx;
+ route.link_type = LINK_EDGE;
+ route.src_link_idx = -1;
+ route.src_type = LINK_ANY;
+ v3_vnet_add_route(&route);
+
+}
+
+
+/*
+ *called in svm/vmx handler
+ *iteative handled the unsent packet in incoming packet queues for
+ *all virtio nic devices in this guest
+ */
+int v3_vnetnic_pktprocess(struct guest_info * info)
+{
+
+ return 0;
+}
+
+#endif
+
+static int vnet_nic_free(struct vm_device * dev) {
+ return 0;
+}
+
+static struct v3_device_ops dev_ops = {
+ .free = vnet_nic_free,
+ .reset = NULL,
+ .start = NULL,
+ .stop = NULL,
+};
+
+static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
+ struct vnet_nic_state * vnetnic = NULL;
+ char * name = v3_cfg_val(cfg, "name");
+
+ v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
+
+ vnetnic = (struct vnet_nic_state *)V3_Malloc(sizeof(struct vnet_nic_state));
+ memset(vnetnic, 0, sizeof(struct vnet_nic_state));
+
+
+ PrintDebug("Registering vnet_nic device at\n");
+
+ struct vm_device * dev = v3_allocate_device(name, &dev_ops, vnetnic);
+
+ if (v3_attach_device(vm, dev) == -1) {
+ PrintError("Could not attach device %s\n", name);
+ return -1;
+ }
+
+ if (v3_dev_connect_net(vm, v3_cfg_val(frontend_cfg, "tag"),
+ &net_ops, frontend_cfg, vnetnic) == -1) {
+ PrintError("Could not connect %s to frontend %s\n",
+ name, v3_cfg_val(frontend_cfg, "tag"));
+ return -1;
+ }
+
+
+ return 0;
+}
+
+device_register("VNET_NIC", vnet_nic_init)
