* All rights reserved.
*
* Author: Jack Lange <jarusl@cs.northwestern.edu>
- * Lei Xia <lxia@cs.northwestern.edu>
+ * Lei Xia <lxia@cs.northwestern.edu>
*
* This is free software. You are permitted to use,
* redistribute, and modify it as specified in the file "V3VEE_LICENSE".
-static int handle_cmd_kick(struct guest_info * core, struct virtio_vnet_state * vnet_state) {
+static int handle_cmd_kick(struct guest_info * core,
+ struct virtio_vnet_state * vnet_state) {
struct virtio_queue * q = &(vnet_state->queue[0]);
PrintDebug("VNET Bridge: Handling command queue\n");
}
-static int vnet_pkt_input_cb(struct v3_vm_info * vm, struct v3_vnet_pkt vnet_pkts[], uint16_t pkt_num, void * private_data){
+static int vnet_pkt_input_cb(struct v3_vm_info * vm,
+ struct v3_vnet_pkt * pkt,
+ void * private_data){
struct virtio_vnet_state * vnet_state = (struct virtio_vnet_state *)private_data;
struct virtio_queue * q = &(vnet_state->queue[RECV_QUEUE]);
int ret_val = -1;
unsigned long flags;
- uint16_t sent;
- struct v3_vnet_pkt *pkt;
-
- if(pkt_num <= 0)
- return 0;
flags = v3_lock_irqsave(vnet_state->lock);
goto exit;
}
- PrintDebug("VNET Bridge: RX: running on cpu: %d, num of pkts: %d\n", V3_Get_CPU(), pkt_num);
-
- for(sent = 0; sent < pkt_num; sent ++) {
- pkt = &vnet_pkts[sent];
- vnet_state->pkt_recv ++;
-
- if (q->cur_avail_idx != q->avail->index) {
- uint16_t pkt_idx = q->avail->ring[q->cur_avail_idx % q->queue_size];
- struct vring_desc * pkt_desc = NULL;
- struct vnet_bridge_pkt * virtio_pkt = NULL;
+ if (q->cur_avail_idx != q->avail->index) {
+ uint16_t pkt_idx = q->avail->ring[q->cur_avail_idx % q->queue_size];
+ struct vring_desc * pkt_desc = NULL;
+ struct vnet_bridge_pkt * virtio_pkt = NULL;
- pkt_desc = &(q->desc[pkt_idx]);
- PrintDebug("VNET Bridge RX: buffer desc len: %d\n", pkt_desc->length);
+ pkt_desc = &(q->desc[pkt_idx]);
+ PrintDebug("VNET Bridge RX: buffer desc len: %d\n", pkt_desc->length);
- if (v3_gpa_to_hva(&(vm->cores[0]), pkt_desc->addr_gpa, (addr_t *)&(virtio_pkt)) == -1) {
- PrintError("Could not translate buffer address\n");
- goto exit;
- }
+ if (v3_gpa_to_hva(&(vm->cores[0]), pkt_desc->addr_gpa, (addr_t *)&(virtio_pkt)) == -1) {
+ PrintError("Could not translate buffer address\n");
+ goto exit;
+ }
- PrintDebug("VNET Bridge: RX: pkt sent to guest pkt size: %d, dst link: %d\n", pkt->size, pkt->dst_id);
+ PrintDebug("VNET Bridge: RX: pkt sent to guest pkt size: %d, dst link: %d\n", pkt->size, pkt->dst_id);
- // Fill in dst packet buffer
- virtio_pkt->link_id = pkt->dst_id;
- virtio_pkt->pkt_size = pkt->size;
- memcpy(virtio_pkt->pkt, pkt->data, pkt->size);
+ // Fill in dst packet buffer
+ virtio_pkt->link_id = pkt->dst_id;
+ virtio_pkt->pkt_size = pkt->size;
+ memcpy(virtio_pkt->pkt, pkt->data, pkt->size);
- q->used->ring[q->used->index % q->queue_size].id = q->avail->ring[q->cur_avail_idx % q->queue_size];
- q->used->ring[q->used->index % q->queue_size].length = sizeof(struct vnet_bridge_pkt);
-
- q->used->index++;
- q->cur_avail_idx++;
- } else {
- vnet_state->pkt_drop ++;
- v3_vnet_disable_bridge();
- }
- }
+ q->used->ring[q->used->index % q->queue_size].id = q->avail->ring[q->cur_avail_idx % q->queue_size];
+ q->used->ring[q->used->index % q->queue_size].length = sizeof(struct vnet_bridge_pkt);
- if(sent == 0){
- goto exit;
+ q->used->index++;
+ q->cur_avail_idx++;
+ } else {
+ vnet_state->pkt_drop ++;
}
if (!(q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
}
ret_val = 0;
-
-#ifdef CONFIG_VNET_PROFILE
- if (vnet_state->pkt_recv % 200000 == 0)
- PrintError("Vnet Bridge: sent: %ld, rxed: %ld, dropped: %ld, total exit: %ld, tx exit: %ld, rx exit: %ld\n",
- vnet_state->pkt_sent,
- vnet_state->pkt_recv,
- vnet_state->pkt_drop,
- vnet_state->total_exit,
- vnet_state->tx_exit,
- vnet_state->rx_exit);
-#endif
-
exit:
v3_unlock_irqrestore(vnet_state->lock, flags);
return ret_val;
}
-static void vnet_pkt_input_xcall(void *data){
- struct v3_vnet_bridge_input_args *args = (struct v3_vnet_bridge_input_args *)data;
-
- vnet_pkt_input_cb(args->vm, args->vnet_pkts, args->pkt_num, args->private_data);
-}
-
-static int handle_pkt_kick(struct guest_info *core, struct virtio_vnet_state * vnet_state)
+static int handle_pkt_kick(struct guest_info * core,
+ struct virtio_vnet_state * vnet_state)
{
struct virtio_queue * q = &(vnet_state->queue[XMIT_QUEUE]);
- unsigned long flags = 0;
int recvd = 0;
- flags = v3_lock_irqsave(vnet_state->lock);
-
if (q->ring_avail_addr == 0) {
- goto exit;
+ return -1;
}
while (q->cur_avail_idx != q->avail->index) {
return -1;
}
- PrintDebug("VNET Bridge: TX: on cpu %d pkt size: %d, dst link: %d\n", cpu, virtio_pkt->pkt_size, virtio_pkt->link_id);
-
- v3_vnet_rx(virtio_pkt->pkt, virtio_pkt->pkt_size, virtio_pkt->link_id, LINK_EDGE);
+ //PrintDebug("VNET Bridge: TX: on cpu %d pkt size: %d, dst link: %d\n", cpu, virtio_pkt->pkt_size, virtio_pkt->link_id);
+ struct v3_vnet_pkt pkt;
+ pkt.size = virtio_pkt->pkt_size;
+ pkt.src_type = LINK_EDGE;
+ pkt.src_id = 0;
+ memcpy(pkt.header, virtio_pkt->pkt, ETHERNET_HEADER_LEN);
+ pkt.data = virtio_pkt->pkt;
+
+ v3_vnet_send_pkt(&pkt, NULL);
+
q->used->ring[q->used->index % q->queue_size].id = q->avail->ring[q->cur_avail_idx % q->queue_size];
q->used->ring[q->used->index % q->queue_size].length = pkt_desc->length; // What do we set this to????
q->used->index++;
}
if(recvd == 0){
- goto exit;
- }
-
- //PrintError("In polling get %d\n", recvd);
-
- //if on the dom0 core, interrupt the domU core to poll pkts
- //otherwise, call the polling directly
- int cpu = V3_Get_CPU();
- if(vnet_state->vm->cores[0].cpu_id == cpu){
- cpu = (cpu == 0)?1:0;
- v3_interrupt_cpu(vnet_state->vm, cpu, V3_VNET_POLLING_VECTOR);
- }else{
- v3_vnet_polling();
+ return 0;
}
- if((vnet_state->pkt_sent % (QUEUE_SIZE/20)) == 0) { //optimized for guest's, batch the interrupts
- if (!(q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
- v3_pci_raise_irq(vnet_state->pci_bus, 0, vnet_state->pci_dev);
- vnet_state->virtio_cfg.pci_isr = 0x1;
- }
+ if (!(q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
+ v3_pci_raise_irq(vnet_state->pci_bus, 0, vnet_state->pci_dev);
+ vnet_state->virtio_cfg.pci_isr = 0x1;
}
-
-#ifdef CONFIG_VNET_PROFILE
- if (vnet_state->pkt_sent % 200000 == 0)
- PrintError("Vnet Bridge: sent: %ld, rxed: %ld, dropped: %ld, total exit: %ld, tx exit: %ld, rx exit: %ld\n",
- vnet_state->pkt_sent,
- vnet_state->pkt_recv,
- vnet_state->pkt_drop,
- vnet_state->total_exit,
- vnet_state->tx_exit,
- vnet_state->rx_exit);
-#endif
-
-exit:
- v3_unlock_irqrestore(vnet_state->lock,flags);
-
+
return 0;
}
-static int polling_pkt_from_guest(struct v3_vm_info * vm, void *private_data){
+static void vnet_virtio_poll(struct v3_vm_info * vm, void * private_data){
struct virtio_vnet_state * vnet_state = (struct virtio_vnet_state *)private_data;
-
- return handle_pkt_kick(&(vm->cores[0]), vnet_state);
+
+ if(vm == vnet_state->vm){
+ handle_pkt_kick(&(vm->cores[0]), vnet_state);
+ }
}
-static int handle_rx_kick(struct guest_info *core, struct virtio_vnet_state * vnet_state)
+static int handle_rx_kick(struct guest_info *core,
+ struct virtio_vnet_state * vnet_state)
{
- v3_vnet_enable_bridge();
+ //v3_vnet_enable_bridge();
return 0;
}
-static int vnet_virtio_io_write(struct guest_info * core, uint16_t port, void * src, uint_t length, void * private_data) {
+static int vnet_virtio_io_write(struct guest_info * core,
+ uint16_t port, void * src,
+ uint_t length, void * private_data) {
struct virtio_vnet_state * vnet_state = (struct virtio_vnet_state *)private_data;
int port_idx = port % vnet_state->io_range_size;
PrintDebug("VNET Bridge: VIRTIO VNET Write for port %d len=%d, value=%x\n",
port, length, *(uint32_t *)src);
- PrintDebug("VNET Bridge: port idx=%d\n", port_idx);
vnet_state->total_exit ++;
-
switch (port_idx) {
case GUEST_FEATURES_PORT:
if (length != 4) {
if(vnet_state->queue[RECV_QUEUE].avail != NULL){
vnet_state->ready = 1;
+ vnet_state->queue[RECV_QUEUE].used->flags |= VRING_NO_NOTIFY_FLAG;
}
//No notify when there is pkt tx from guest
+ //palacios will do the polling
if(vnet_state->queue[XMIT_QUEUE].used != NULL){
vnet_state->queue[XMIT_QUEUE].used->flags |= VRING_NO_NOTIFY_FLAG;
}
-
} else {
PrintError("Illegal write length for page frame number\n");
return -1;
PrintError("Could not handle Virtio VNET TX\n");
return -1;
}
- vnet_state->tx_exit ++;
- //PrintError("Notify on TX\n");
+ PrintError("Notify on TX\n");
} else if (queue_idx == 2) {
if (handle_rx_kick(core, vnet_state) == -1){
PrintError("Could not handle Virtio RX buffer refills Kick\n");
}
-static int vnet_virtio_io_read(struct guest_info * core, uint16_t port, void * dst, uint_t length, void * private_data) {
+static int vnet_virtio_io_read(struct guest_info * core,
+ uint16_t port, void * dst,
+ uint_t length, void * private_data) {
struct virtio_vnet_state * vnet_state = (struct virtio_vnet_state *)private_data;
int port_idx = port % vnet_state->io_range_size;
}
+static int virtio_free(struct virtio_vnet_state * vnet_state) {
+
+ // unregister from PCI
+
+ V3_Free(vnet_state);
+ return 0;
+}
+
static struct v3_device_ops dev_ops = {
- .free = NULL,
- .reset = NULL,
- .start = NULL,
- .stop = NULL,
+ .free = (int (*)(void *))virtio_free,
};
static int dev_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
struct vm_device * pci_bus = v3_find_dev(vm, v3_cfg_val(cfg, "bus"));
struct virtio_vnet_state * vnet_state = NULL;
struct pci_device * pci_dev = NULL;
- char * dev_id = v3_cfg_val(cfg, "ID");
+ char * name = v3_cfg_val(cfg, "name");
- PrintDebug("VNET Bridge: Initializing VNET Bridge Control device: %s\n", dev_id);
+ PrintDebug("VNET Bridge: Initializing VNET Bridge Control device: %s\n", name);
if (pci_bus == NULL) {
PrintError("VNET Bridge device require a PCI Bus");
vnet_state->vm = vm;
- struct vm_device * dev = v3_allocate_device(dev_id, &dev_ops, vnet_state);
+ struct vm_device * dev = v3_add_device(vm, name, &dev_ops, vnet_state);
- if (v3_attach_device(vm, dev) == -1) {
- PrintError("Could not attach device %s\n", dev_id);
+ if (dev == NULL) {
+ PrintError("Could not attach device %s\n", name);
+ V3_Free(vnet_state);
return -1;
}
bars[0].private_data = vnet_state;
pci_dev = v3_pci_register_device(pci_bus, PCI_STD_DEVICE,
- 0, PCI_AUTO_DEV_NUM, 0,
+ 0, 5 /*PCI_AUTO_DEV_NUM*/, 0,
"LNX_VIRTIO_VNET", bars,
NULL, NULL, NULL, vnet_state);
if (!pci_dev) {
PrintError("Could not register PCI Device\n");
+ v3_remove_device(dev);
return -1;
}
virtio_reset(vnet_state);
+ struct v3_vnet_bridge_ops brg_ops;
+ brg_ops.input = vnet_pkt_input_cb;
+ brg_ops.poll = vnet_virtio_poll;
+
V3_Print("Registering Virtio device as vnet bridge\n");
- v3_vnet_add_bridge(vm, vnet_pkt_input_cb, vnet_pkt_input_xcall, polling_pkt_from_guest, 0, 500000, (void *)vnet_state);
+ v3_vnet_add_bridge(vm, &brg_ops, CTL_VM_BRIDGE, (void *)vnet_state);
return 0;
}
