* 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>
+ * Copyright (c) 2010, Lei Xia <lxia@northwestern.edu>
+ * Copyright (c) 2010, The V3VEE Project <http://www.v3vee.org>
* All rights reserved.
*
* Author: Lei Xia <lxia@northwestern.edu>
#include <devices/lnx_virtio_pci.h>
#include <palacios/vm_guest_mem.h>
#include <devices/pci.h>
+#include <palacios/vmm_sprintf.h>
-struct vnet_nic_state {
- char mac[6];
+#ifndef CONFIG_DEBUG_VNET_NIC
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+struct vnet_nic_state {
+ char mac[6];
+ struct v3_vm_info * vm;
+ struct v3_dev_net_ops net_ops;
+ int vnet_dev_id;
};
-//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);
+/* called by frontend device,
+ * tell the VNET can start sending pkt to it */
+static void start_rx(void *private_data){
+ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
- v3_vnet_send_rawpkt(buf, len, private_data);
- return 0;
+ v3_vnet_enable_device(vnetnic->vnet_dev_id);
}
-static int receive(uint8_t * buf, uint32_t count, void * private_data, struct vm_device *src_dev){
+/* called by frontend device,
+ * tell the VNET stop sending pkt to it */
+static void stop_rx(void *private_data){
+ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
- return 0;
+ v3_vnet_disable_device(vnetnic->vnet_dev_id);
}
+/* called by frontend, send pkt to VNET */
+static int vnet_nic_send(uint8_t * buf, uint32_t len, void * private_data, struct vm_device *dest_dev){
+ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
+
+ struct v3_vnet_pkt pkt;
+ pkt.size = len;
+ pkt.src_type = LINK_INTERFACE;
+ pkt.src_id = vnetnic->vnet_dev_id;
+ memcpy(pkt.header, buf, ETHERNET_HEADER_LEN);
+ pkt.data = buf;
+
+#ifdef CONFIG_DEBUG_VNET_NIC
+ {
+ PrintDebug("Virtio VNET-NIC: send pkt size: %d, pkt src_id: %d\n",
+ len, vnetnic->vnet_dev_id);
+ v3_hexdump(buf, len, NULL, 0);
+ }
+#endif
-static struct v3_dev_net_ops net_ops = {
- .send = send,
- .receive = receive,
-};
-
+ return v3_vnet_send_pkt(&pkt, NULL);;
+}
-#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);
+/* called by VNET,
+ * send pkt to frontend device */
+static int virtio_input(struct v3_vm_info *info, struct v3_vnet_pkt * pkt, void * private_data){
+ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
+
+ return vnetnic->net_ops.recv(pkt->data,
+ pkt->size,
+ vnetnic->net_ops.frontend_data);
}
+/* called by VNET,
+ * tell frontend device to poll data from guest */
+static void virtio_poll(struct v3_vm_info *info, void * private_data){
+ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)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};
+ vnetnic->net_ops.poll(info, vnetnic->net_ops.frontend_data);
+}
+/* called by VNET, from different processor */
+static void virtio_poll_xcall(void *data){
+ struct v3_vnet_dev_xcall_args *args = (struct v3_vnet_dev_xcall_args *)data;
+ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)args->private_data;
- 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;
+ if(args->vm == vnetnic->vm) /*only do polling on the same Virtual Machine */
+ virtio_poll(args->vm, args->private_data);
+}
- register_dev(virtio_state, net_state);
+/* called by VNET,
+ * tell the frontend to start sending pkt to VNET*/
+static void start_tx(void *private_data){
+ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
- 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);
-
+ vnetnic->net_ops.start_tx(vnetnic->net_ops.frontend_data);
}
+/* called by VNET
+ * tell the frontend device to stop sending pkt to VNET*/
+static void stop_tx(void *private_data){
+ struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)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;
+ vnetnic->net_ops.stop_tx(vnetnic->net_ops.frontend_data);
}
-#endif
static int vnet_nic_free(struct vm_device * dev) {
return 0;
.stop = NULL,
};
+static struct v3_vnet_dev_ops vnet_dev_ops = {
+ .input = virtio_input,
+ .poll = virtio_poll,
+ .poll_xcall = virtio_poll_xcall,
+ .start_tx = start_tx,
+ .stop_tx = stop_tx,
+};
+
+
+static int register_to_vnet(struct v3_vm_info * vm,
+ struct vnet_nic_state *vnet_nic,
+ char *dev_name,
+ uchar_t mac[6]) {
+
+ PrintDebug("Vnet-nic: register Vnet-nic device %s, state %p to VNET\n", dev_name, vnet_nic);
+
+ return v3_vnet_add_dev(vm, mac, &vnet_dev_ops, (void *)vnet_nic);
+}
+
+
+static int str2mac(char *macstr, char mac[6]){
+ char hex[2], *s = macstr;
+ int i = 0;
+
+ while(s){
+ memcpy(hex, s, 2);
+ mac[i++] = (char)atox(hex);
+ if (i == 6) return 0;
+ s=strchr(s, ':');
+ if(s) s++;
+ }
+
+ return -1;
+}
+
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");
+ char * macstr = NULL;
+ char mac[6];
+ int vnet_dev_id;
v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
+ macstr = v3_cfg_val(frontend_cfg, "mac");
+
+ if (macstr == NULL) {
+ PrintDebug("Vnet-nic: No Mac specified\n");
+ } else {
+ str2mac(macstr, mac);
+ }
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) {
return -1;
}
+ vnetnic->net_ops.send = vnet_nic_send;
+ vnetnic->net_ops.start_rx = start_rx;
+ vnetnic->net_ops.stop_rx = stop_rx;
+ memcpy(vnetnic->mac, mac, 6);
+ vnetnic->vm = vm;
+
if (v3_dev_connect_net(vm, v3_cfg_val(frontend_cfg, "tag"),
- &net_ops, frontend_cfg, vnetnic) == -1) {
+ &(vnetnic->net_ops), frontend_cfg, vnetnic) == -1) {
PrintError("Could not connect %s to frontend %s\n",
name, v3_cfg_val(frontend_cfg, "tag"));
return -1;
}
-
+
+ PrintDebug("Vnet-nic: Connect %s to frontend %s\n",
+ name, v3_cfg_val(frontend_cfg, "tag"));
+
+ if ((vnet_dev_id = register_to_vnet(vm, vnetnic, name, vnetnic->mac)) == -1) {
+ PrintError("Vnet-nic device %s (mac: %s) fails to registered to VNET\n", name, macstr);
+ }
+ vnetnic->vnet_dev_id = vnet_dev_id;
+
+ PrintDebug("Vnet-nic device %s (mac: %s, %ld) registered to VNET\n",
+ name, macstr, *((ulong_t *)vnetnic->mac));
+
+
+//for temporary hack for vnet bridge test
+#if 0
+ {
+ uchar_t zeromac[6] = {0,0,0,0,0,0};
+
+ if(!strcmp(name, "vnet_nic")){
+ struct v3_vnet_route route;
+
+ route.dst_id = vnet_dev_id;
+ route.dst_type = LINK_INTERFACE;
+ route.src_id = 0;
+ route.src_type = LINK_EDGE;
+ memcpy(route.dst_mac, zeromac, 6);
+ route.dst_mac_qual = MAC_ANY;
+ memcpy(route.src_mac, zeromac, 6);
+ route.src_mac_qual = MAC_ANY;
+ v3_vnet_add_route(route);
+
+
+ route.dst_id = 0;
+ route.dst_type = LINK_EDGE;
+ route.src_id = vnet_dev_id;
+ route.src_type = LINK_INTERFACE;
+ memcpy(route.dst_mac, zeromac, 6);
+ route.dst_mac_qual = MAC_ANY;
+ memcpy(route.src_mac, zeromac, 6);
+ route.src_mac_qual = MAC_ANY;
+
+ v3_vnet_add_route(route);
+ }
+ }
+#endif
+
+//for temporary hack for Linux bridge (w/o encapuslation) test
+#if 1
+ {
+ static int vnet_nic_guestid = -1;
+ static int vnet_nic_dom0 = -1;
+ uchar_t zeromac[6] = {0,0,0,0,0,0};
+
+ if(!strcmp(name, "vnet_nic")){ //domu
+ vnet_nic_guestid = vnet_dev_id;
+ }
+ if (!strcmp(name, "vnet_nic_dom0")){
+ vnet_nic_dom0 = vnet_dev_id;
+ }
+
+ if(vnet_nic_guestid != -1 && vnet_nic_dom0 !=-1){
+ struct v3_vnet_route route;
+
+ route.src_id = vnet_nic_guestid;
+ route.src_type = LINK_INTERFACE;
+ route.dst_id = vnet_nic_dom0;
+ route.dst_type = LINK_INTERFACE;
+ memcpy(route.dst_mac, zeromac, 6);
+ route.dst_mac_qual = MAC_ANY;
+ memcpy(route.src_mac, zeromac, 6);
+ route.src_mac_qual = MAC_ANY;
+ v3_vnet_add_route(route);
+
+
+ route.src_id = vnet_nic_dom0;
+ route.src_type = LINK_INTERFACE;
+ route.dst_id = vnet_nic_guestid;
+ route.dst_type = LINK_INTERFACE;
+ memcpy(route.dst_mac, zeromac, 6);
+ route.dst_mac_qual = MAC_ANY;
+ memcpy(route.src_mac, zeromac, 6);
+ route.src_mac_qual = MAC_ANY;
+
+ v3_vnet_add_route(route);
+ }
+ }
+#endif
return 0;
}
