2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2010, Lei Xia <lxia@northwestern.edu>
11 * Copyright (c) 2010, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Lei Xia <lxia@northwestern.edu>
17 * This is free software. You are permitted to use,
18 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
20 //backend device for Virtio NIC
22 #include <vnet/vnet.h>
23 #include <palacios/vmm.h>
24 #include <palacios/vmm_dev_mgr.h>
25 #include <devices/lnx_virtio_pci.h>
26 #include <palacios/vm_guest_mem.h>
27 #include <devices/pci.h>
28 #include <palacios/vmm_sprintf.h>
29 #include <palacios/vmm_ethernet.h>
31 #ifndef V3_CONFIG_DEBUG_VNET_NIC
33 #define PrintDebug(fmt, args...)
36 struct vnet_nic_state {
37 struct v3_vm_info * vm;
38 struct v3_dev_net_ops net_ops;
43 /* called by frontend, send pkt to VNET */
44 static int vnet_nic_send(uint8_t * buf, uint32_t len,
45 void * private_data) {
46 struct vnet_nic_state * vnetnic = (struct vnet_nic_state *)private_data;
48 struct v3_vnet_pkt pkt;
50 pkt.src_type = LINK_INTERFACE;
51 pkt.src_id = vnetnic->vnet_dev_id;
52 memcpy(pkt.header, buf, ETHERNET_HEADER_LEN);
55 V3_Net_Print(2, "VNET-NIC: send pkt (size: %d, src_id: %d, src_type: %d)\n",
56 pkt.size, pkt.src_id, pkt.src_type);
58 v3_hexdump(buf, len, NULL, 0);
61 return v3_vnet_send_pkt(&pkt, NULL);
65 /* send pkt to frontend device */
66 static int fnt_input(struct v3_vm_info * info,
67 struct v3_vnet_pkt * pkt,
69 struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
71 V3_Net_Print(2, "VNET-NIC: receive pkt (size %d, src_id:%d, src_type: %d, dst_id: %d, dst_type: %d)\n",
72 pkt->size, pkt->src_id, pkt->src_type, pkt->dst_id, pkt->dst_type);
74 return vnetnic->net_ops.recv(pkt->data, pkt->size,
75 vnetnic->net_ops.config.frontend_data);
79 /* poll pkt from frontend device */
80 static int fnt_poll(struct v3_vm_info * info,
81 int quote, void * private_data){
82 struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
84 return vnetnic->net_ops.poll(quote, vnetnic->net_ops.config.frontend_data);
88 static int vnet_nic_free(struct vnet_nic_state * vnetnic) {
90 v3_vnet_del_dev(vnetnic->vnet_dev_id);
96 static struct v3_device_ops dev_ops = {
97 .free = (int (*)(void *))vnet_nic_free,
101 static struct v3_vnet_dev_ops vnet_dev_ops = {
107 static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
108 struct vnet_nic_state * vnetnic = NULL;
109 char * dev_id = v3_cfg_val(cfg, "ID");
112 v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
114 if (!frontend_cfg || !(v3_cfg_val(frontend_cfg, "tag"))) {
115 PrintError(vm, VCORE_NONE, "No frontend config specified, or frontend has no tag\n");
119 vnetnic = (struct vnet_nic_state *)V3_Malloc(sizeof(struct vnet_nic_state));
122 PrintError(vm, VCORE_NONE, "Cannot allocate in init\n");
126 memset(vnetnic, 0, sizeof(struct vnet_nic_state));
128 struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, vnetnic);
130 PrintError(vm, VCORE_NONE, "Could not attach device %s\n", dev_id);
135 vnetnic->net_ops.send = vnet_nic_send;
138 if (v3_dev_connect_net(vm, v3_cfg_val(frontend_cfg, "tag"),
139 &(vnetnic->net_ops), frontend_cfg, vnetnic) == -1) {
140 PrintError(vm, VCORE_NONE, "Could not connect %s to frontend %s\n",
141 dev_id, v3_cfg_val(frontend_cfg, "tag"));
142 v3_remove_device(dev);
146 PrintDebug(vm, VCORE_NONE, "Vnet-nic: Connect %s to frontend %s\n",
147 dev_id, v3_cfg_val(frontend_cfg, "tag"));
149 if ((vnet_dev_id = v3_vnet_add_dev(vm, vnetnic->net_ops.config.fnt_mac,
150 &vnet_dev_ops, vnetnic->net_ops.config.quote,
151 vnetnic->net_ops.config.poll, (void *)vnetnic)) == -1) {
152 PrintError(vm, VCORE_NONE, "Vnet-nic device %s fails to registered to VNET\n", dev_id);
154 v3_remove_device(dev);
157 vnetnic->vnet_dev_id = vnet_dev_id;
162 device_register("VNET_NIC", vnet_nic_init)