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) 2008, Lei Xia <lxia@northwestern.edu>
11 * Copyright (c) 2008, 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 <palacios/vmm_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>
30 #ifndef CONFIG_DEBUG_VNET_NIC
32 #define PrintDebug(fmt, args...)
36 struct vnet_nic_state {
38 struct v3_vm_info * vm;
39 struct v3_dev_net_ops net_ops;
44 static int vnet_send(uint8_t * buf, uint32_t len, void * private_data, struct vm_device *dest_dev){
45 struct v3_vnet_pkt pkt;
46 struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
50 pkt.src_type = LINK_INTERFACE;
51 pkt.src_id = vnetnic->vnet_dev_id;
52 memcpy(pkt.header, buf, ETHERNET_HEADER_LEN);
55 #ifdef CONFIG_DEBUG_VNET_NIC
57 PrintDebug("Virtio VNET-NIC: send pkt size: %d, pkt src_id: %d, src_type: %d\n",
58 len, pkt.src_id, pkt.src_type);
59 v3_hexdump(buf, len, NULL, 0);
64 v3_vnet_send_pkt(&pkt, NULL);
69 static int virtio_input(struct v3_vm_info *info, struct v3_vnet_pkt * pkt, void * private_data){
70 struct vnet_nic_state *vnetnic = (struct vnet_nic_state *)private_data;
72 PrintDebug("Vnet-nic: In input: vnet_nic state %p\n", vnetnic);
74 return vnetnic->net_ops.recv(pkt->data, pkt->size, vnetnic->net_ops.frontend_data);
77 static int register_to_vnet(struct v3_vm_info * vm,
78 struct vnet_nic_state *vnet_nic,
82 PrintDebug("Vnet-nic: register Vnet-nic device %s, state %p to VNET\n", dev_name, vnet_nic);
84 return v3_vnet_add_dev(vm, mac, virtio_input, (void *)vnet_nic);
87 static int vnet_nic_free(struct vm_device * dev) {
91 static struct v3_device_ops dev_ops = {
92 .free = vnet_nic_free,
99 static int str2mac(char *macstr, char mac[6]){
100 char hex[2], *s = macstr;
105 mac[i++] = (char)atox(hex);
106 if (i == 6) return 0;
114 static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
115 struct vnet_nic_state * vnetnic = NULL;
116 char * name = v3_cfg_val(cfg, "name");
117 char * macstr = NULL;
121 v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
122 macstr = v3_cfg_val(frontend_cfg, "mac");
124 if (macstr == NULL) {
125 PrintDebug("Vnet-nic: No Mac specified\n");
127 str2mac(macstr, mac);
130 vnetnic = (struct vnet_nic_state *)V3_Malloc(sizeof(struct vnet_nic_state));
131 memset(vnetnic, 0, sizeof(struct vnet_nic_state));
133 struct vm_device * dev = v3_allocate_device(name, &dev_ops, vnetnic);
135 if (v3_attach_device(vm, dev) == -1) {
136 PrintError("Could not attach device %s\n", name);
140 vnetnic->net_ops.send = vnet_send;
141 memcpy(vnetnic->mac, mac, 6);
144 if (v3_dev_connect_net(vm, v3_cfg_val(frontend_cfg, "tag"),
145 &(vnetnic->net_ops), frontend_cfg, vnetnic) == -1) {
146 PrintError("Could not connect %s to frontend %s\n",
147 name, v3_cfg_val(frontend_cfg, "tag"));
151 PrintDebug("Vnet-nic: Connect %s to frontend %s\n",
152 name, v3_cfg_val(frontend_cfg, "tag"));
154 if ((vnet_dev_id = register_to_vnet(vm, vnetnic, name, vnetnic->mac)) == -1) {
155 PrintError("Vnet-nic device %s (mac: %s) fails to registered to VNET\n", name, macstr);
157 vnetnic->vnet_dev_id = vnet_dev_id;
159 PrintDebug("Vnet-nic device %s (mac: %s, %ld) registered to VNET\n", name, macstr, *((ulong_t *)vnetnic->mac));
162 //for temporary hack for vnet bridge test
165 uchar_t zeromac[6] = {0,0,0,0,0,0};
167 if(!strcmp(name, "vnet_nic")){
168 struct v3_vnet_route route;
170 route.dst_id = vnet_dev_id;
171 route.dst_type = LINK_INTERFACE;
173 route.src_type = LINK_EDGE;
174 memcpy(route.dst_mac, zeromac, 6);
175 route.dst_mac_qual = MAC_ANY;
176 memcpy(route.src_mac, zeromac, 6);
177 route.src_mac_qual = MAC_ANY;
178 v3_vnet_add_route(route);
182 route.dst_type = LINK_EDGE;
183 route.src_id = vnet_dev_id;
184 route.src_type = LINK_INTERFACE;
185 memcpy(route.dst_mac, zeromac, 6);
186 route.dst_mac_qual = MAC_ANY;
187 memcpy(route.src_mac, zeromac, 6);
188 route.src_mac_qual = MAC_ANY;
190 v3_vnet_add_route(route);
198 device_register("VNET_NIC", vnet_nic_init)