uint8_t mac_addr[6];
struct v3_vm_info * vm;
- int (*input)(struct v3_vm_info * vm, struct v3_vnet_pkt * pkt, void * private_data);
+ int (*input)(struct v3_vm_info * vm, struct v3_vnet_pkt * pkt, void * private_data);
void * private_data;
int dev_id;
} __attribute__((packed));
+struct vnet_brg_dev {
+ struct v3_vm_info * vm;
+
+ int (*input)(struct v3_vm_info * vm, struct v3_vnet_pkt * pkt, void * private_data);
+ void * private_data;
+} __attribute__((packed));
+
+
static struct {
struct list_head routes;
struct list_head devs;
-
+
int num_routes;
int num_devs;
+ struct vnet_brg_dev *bridge;
+
v3_lock_t lock;
struct gen_queue * inpkt_q;
PrintDebug("Src dev id (%d), src type (%d)",
route->route_def.src_id,
route->route_def.src_type);
- PrintDebug("Dst dev id (%d), dst type (%d)",
+ PrintDebug("Dst dev id (%d), dst type (%d)\n",
route->route_def.dst_id,
route->route_def.dst_type);
- PrintDebug("dst_dev (%p), dst_dev_id (%d), dst_dev_input (%p), dst_dev_data (%p)\n",
+ if (route->route_def.dst_type == LINK_INTERFACE) {
+ PrintDebug("dst_dev (%p), dst_dev_id (%d), dst_dev_input (%p), dst_dev_data (%p)\n",
route->dst_dev,
route->dst_dev->dev_id,
route->dst_dev->input,
route->dst_dev->private_data);
-
+ }
}
static void dump_routes(){
}
-static int add_route_to_cache(struct v3_vnet_pkt * pkt, struct route_list * routes) {
+static int add_route_to_cache(const struct v3_vnet_pkt * pkt, struct route_list * routes) {
memcpy(routes->hash_buf, pkt->hash_buf, VNET_HASH_SIZE);
if (v3_htable_insert(vnet_state.route_cache, (addr_t)routes->hash_buf, (addr_t)routes) == 0) {
return 0;
}
-static int look_into_cache(struct v3_vnet_pkt * pkt, struct route_list ** routes) {
+static int look_into_cache(const struct v3_vnet_pkt * pkt, struct route_list ** routes) {
*routes = (struct route_list *)v3_htable_search(vnet_state.route_cache, (addr_t)(pkt->hash_buf));
}
flags = v3_lock_irqsave(vnet_state.lock);
+
list_add(&(new_route->node), &(vnet_state.routes));
+ clear_hash_cache();
+
v3_unlock_irqrestore(vnet_state.lock, flags);
- clear_hash_cache();
#ifdef CONFIG_DEBUG_VNET
dump_routes();
// At the end allocate a route_list
// This list will be inserted into the cache so we don't need to free it
-static struct route_list * match_route(struct v3_vnet_pkt * pkt) {
+static struct route_list * match_route(const struct v3_vnet_pkt * pkt) {
struct vnet_route_info * route = NULL;
struct route_list * matches = NULL;
int num_matches = 0;
return matches;
}
-static int handle_one_pkt(struct v3_vnet_pkt * pkt, void *private_data) {
+
+int v3_vnet_send_pkt(struct v3_vnet_pkt * pkt, void * private_data) {
struct route_list * matched_routes = NULL;
unsigned long flags;
int i;
-
#ifdef CONFIG_DEBUG_VNET
{
- struct eth_hdr * hdr = (struct eth_hdr *)(pkt->data);
+ struct eth_hdr * hdr = (struct eth_hdr *)(pkt->header);
char dest_str[30];
char src_str[30];
}
#endif
-#ifdef CONFIG_VNET_PROFILE
- struct guest_info *core = (struct guest_info *)private_data;
- uint64_t start, end;
- rdtscll(start);
-#endif
-
flags = v3_lock_irqsave(vnet_state.lock);
look_into_cache(pkt, &matched_routes);
if (matched_routes == NULL) {
- PrintDebug("Vnet: can not find route in cache, looking into routing table\n");
+ PrintDebug("Vnet: send pkt Looking into routing table\n");
matched_routes = match_route(pkt);
if (matched_routes) {
add_route_to_cache(pkt, matched_routes);
} else {
- PrintDebug("Could not find route for packet...\n");
+ PrintDebug("Could not find route for packet... discards packet\n");
v3_unlock_irqrestore(vnet_state.lock, flags);
return -1;
}
v3_unlock_irqrestore(vnet_state.lock, flags);
-#ifdef CONFIG_VNET_PROFILE
- {
- rdtscll(end);
- core->vnet_times.time_route_lookup = end - start;
- }
-#endif
- PrintDebug("Vnet: HandleOnePacket: %d\n", matched_routes->num_routes);
+ PrintDebug("Vnet: send pkt route matches %d\n", matched_routes->num_routes);
+
for (i = 0; i < matched_routes->num_routes; i++) {
struct vnet_route_info * route = matched_routes->routes[i];
if (route->route_def.dst_type == LINK_EDGE) {
+ pkt->dst_type = LINK_EDGE;
+ pkt->dst_id = route->route_def.dst_id;
+
+ if (vnet_state.bridge == NULL) {
+ PrintDebug("VNET: No bridge to sent data to links\n");
+ continue;
+ }
+
+ if (vnet_state.bridge->input(vnet_state.bridge->vm, pkt, vnet_state.bridge->private_data) == -1) {
+ PrintDebug("VNET: Packet not sent properly\n");
+ continue;
+ }
} else if (route->route_def.dst_type == LINK_INTERFACE) {
if (route->dst_dev->input(route->dst_dev->vm, pkt, route->dst_dev->private_data) == -1) {
PrintDebug("Vnet: HandleOnePacket: Forward packet according to Route\n");
}
-
-#ifdef CONFIG_VNET_PROFILE
- {
- rdtscll(start);
- core->vnet_times.time_copy_to_guest = start - end;
- }
-#endif
return 0;
}
-int v3_vnet_send_pkt(struct v3_vnet_pkt * pkt, void *private_data) {
- PrintDebug("In Vnet Send: pkt size: %d\n", pkt->size);
-
- if (handle_one_pkt(pkt, private_data) != -1) {
- PrintDebug("VNET: send one packet! pt length %d\n", pkt->size);
- } else {
- PrintDebug("VNET: Fail to forward one packet, discard it!\n");
- }
-
- return 0;
-}
-
-int v3_vnet_add_dev(struct v3_vm_info *vm,uint8_t mac[6],
+int v3_vnet_add_dev(struct v3_vm_info *vm, uint8_t mac[6],
int (*netif_input)(struct v3_vm_info * vm, struct v3_vnet_pkt * pkt, void * private_data),
void * priv_data){
struct vnet_dev * new_dev = NULL;
unsigned long flags;
- int dev_id;
- flags = v3_lock_irqsave(vnet_state.lock);
-
- new_dev = find_dev_by_mac(mac);
-
- if (new_dev) {
- PrintDebug("VNET: register device: Already has device with the same mac\n");
- dev_id = -1;
- goto exit;
- }
-
new_dev = (struct vnet_dev *)V3_Malloc(sizeof(struct vnet_dev));
if (new_dev == NULL) {
PrintError("VNET: Malloc fails\n");
- dev_id = -1;
- goto exit;
+ return -1;
}
memcpy(new_dev->mac_addr, mac, 6);
new_dev->input = netif_input;
new_dev->private_data = priv_data;
new_dev->vm = vm;
-
- list_add(&(new_dev->node), &(vnet_state.devs));
- vnet_state.num_devs ++;
- new_dev->dev_id = vnet_state.num_devs;
- dev_id = new_dev->dev_id;
+ new_dev->dev_id = 0;
+
+ flags = v3_lock_irqsave(vnet_state.lock);
+
+ if (!find_dev_by_mac(mac)) {
+ list_add(&(new_dev->node), &(vnet_state.devs));
+ new_dev->dev_id = ++vnet_state.num_devs;
+ }
+
+ v3_unlock_irqrestore(vnet_state.lock, flags);
+
+ // if the device was found previosly the id should still be 0
+ if (new_dev->dev_id == 0) {
+ PrintError("Device Alrady exists\n");
+ return -1;
+ }
PrintDebug("Vnet: Add Device: dev_id %d, input : %p, private_data %p\n",
new_dev->dev_id, new_dev->input, new_dev->private_data);
-exit:
-
- v3_unlock_irqrestore(vnet_state.lock, flags);
-
- return dev_id;
+ return new_dev->dev_id;
}
+int v3_vnet_add_bridge(struct v3_vm_info * vm,
+ int (*input)(struct v3_vm_info * vm, struct v3_vnet_pkt * pkt, void * private_data),
+ void * priv_data) {
+ unsigned long flags;
+ int bridge_free = 0;
+ struct vnet_brg_dev * tmp_bridge = NULL;
+
+
+ flags = v3_lock_irqsave(vnet_state.lock);
+
+ if (vnet_state.bridge == NULL) {
+ bridge_free = 1;
+ vnet_state.bridge = (void *)1;
+ }
+
+ v3_unlock_irqrestore(vnet_state.lock, flags);
+
+ if (bridge_free == 0) {
+ PrintError("Bridge already set\n");
+ return -1;
+ }
+
+ tmp_bridge = (struct vnet_brg_dev *)V3_Malloc(sizeof(struct vnet_brg_dev));
+
+ if (tmp_bridge == NULL) {
+ PrintError("Malloc Fails\n");
+ return -1;
+ }
+
+ tmp_bridge->vm = vm;
+ tmp_bridge->input = input;
+ tmp_bridge->private_data = priv_data;
+
+ // make this atomic to avoid possible race conditions
+ flags = v3_lock_irqsave(vnet_state.lock);
+ vnet_state.bridge = tmp_bridge;
+ v3_unlock_irqrestore(vnet_state.lock, flags);
+
+ return 0;
+}
+
int V3_init_vnet() {
INIT_LIST_HEAD(&(vnet_state.routes));
