#include <palacios/vm_guest_mem.h>
#include <devices/pci.h>
-struct vnet_nic_state {
- char mac[6];
+#ifndef CONFIG_DEBUG_VNET_NIC
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
+#define ETHERNET_PACKET_LEN 1514
+struct eth_pkt {
+ uint32_t size; //size of data
+ char data[ETHERNET_PACKET_LEN];
+}__attribute__((packed));
+struct vnet_nic_state {
+ char mac[6];
+ struct guest_info *core;
+ struct gen_queue * inpkt_q;
+
+ void *frontend_data;
+ int (*frontend_input)(struct v3_vm_info *info,
+ uchar_t * buf,
+ uint32_t size,
+ void *private_data);
};
//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){
+static int vnet_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){
+static int register_frontend_input(void *backend_data,
+ int (*frontend_input)(struct v3_vm_info *info,
+ uchar_t * buf,
+ uint32_t size,
+ void *private_data),
+ void *front_data){
+ struct vnet_nic_state *dev = (struct vnet_nic_state *)backend_data;
+
+ dev->frontend_data = front_data;
+ dev->frontend_input = frontend_input;
return 0;
}
static struct v3_dev_net_ops net_ops = {
- .send = send,
- .receive = receive,
+ .send = vnet_send,
+ .register_input = register_frontend_input,
};
+static int virtio_input(struct v3_vm_info *info, uchar_t * buf, uint32_t len, void * private_data){
+ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
+
+ PrintDebug("Vnet-nic: In input: vnet_nic state %p\n", vnetnic);
+
+ return vnetnic->frontend_input(info, buf, len, vnetnic->frontend_data);
+}
#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);
+static int sendto_buf(struct vnet_nic_dev_state *vnetnic_dev, uchar_t * buf, uint_t size) {
+ struct eth_pkt *pkt;
+
+ pkt = (struct eth_pkt *)V3_Malloc(sizeof(struct eth_pkt));
+ if(pkt == NULL){
+ PrintError("Vnet NIC: Memory allocate fails\n");
+ return -1;
+ }
+
+ pkt->size = size;
+ memcpy(pkt->data, buf, size);
+ v3_enqueue(vnetnic_dev->inpkt_q, (addr_t)pkt);
+
+ PrintDebug("Vnet NIC: sendto_buf: packet: (size:%d)\n", (int)pkt->size);
+
+ return pkt->size;
+}
+
+/*
+ *called in svm/vmx handler
+ *iteative handled the unsent packet in incoming packet queues for
+ *all virtio nic devices in this guest
+ */
+int v3_virtionic_pktprocess(struct guest_info * info)
+{
+ struct eth_pkt *pkt = NULL;
+ struct virtio_net_state *net_state;
+ int i;
+
+ //PrintDebug("Virtio NIC: processing guest %p\n", info);
+ for (i = 0; i < net_idx; i++) {
+ while (1) {
+ net_state = temp_net_states[i];
+ if(net_state->dev->vm != info)
+ break;
+
+ pkt = (struct eth_pkt *)v3_dequeue(net_state->inpkt_q);
+ if(pkt == NULL)
+ break;
+
+ if (send_pkt_to_guest(net_state, pkt->data, pkt->size, 1, NULL)) {
+ PrintDebug("Virtio NIC: %p In pkt_handle: send one packet! pt length %d\n",
+ net_state, (int)pkt->size);
+ } else {
+ PrintDebug("Virtio NIC: %p In pkt_handle: Fail to send one packet, pt length %d, discard it!\n",
+ net_state, (int)pkt->size);
+ }
+
+ V3_Free(pkt);
+ }
+ }
+
+ return 0;
+}
- return __virtio_dev_send(buf, len, private_data);
+
+/*
+ *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
//register a virtio device to the vnet as backend
-void register_to_vnet(struct vm_device *dev,
+int register_to_vnet(struct v3_vm_info *info,
+ struct vnet_nic_state *vnet_nic,
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 brdmac[6] = {0xff,0xff,0xff,0xff,0xff,0xff};
uchar_t zeromac[6] = {0,0,0,0,0,0};
+ struct v3_vnet_route route;
-
- 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);
+ PrintDebug("Vnet-nic: register Vnet-nic device %s, state %p to VNET\n", dev_name, vnet_nic);
- 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);
+ int idx = v3_vnet_add_node(info, dev_name, mac, virtio_input, (void *)vnet_nic);
+ if (idx < 0) return -1;
- 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));
+ //add default routes for each link edge device
+ memcpy(&route.src_mac, zeromac, 6);
memcpy(&route.dest_mac, mac, 6);
route.src_mac_qual = MAC_ANY;
route.dest_mac_qual = MAC_NONE;
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;
+ memcpy(&route.dest_mac, brdmac, 6);
+ memcpy(&route.src_mac, mac, 6);
+ route.src_mac_qual = MAC_NOT;
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;
}
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) {
name, v3_cfg_val(frontend_cfg, "tag"));
return -1;
}
-
+
+ vnetnic->inpkt_q = v3_create_queue();
+
+ if(register_to_vnet(vm, vnetnic, name, vnetnic->mac) == -1)
+ return -1;
+
+ PrintDebug("Vnet-nic device %s initialized\n", name);
return 0;
}
