int buffed_rx;
int tx_disabled; /* stop TX pkts from guest */
- uint16_t cur_notify_tx_idx; /*for used in update_tx_queue */
uint64_t pkt_sent, pkt_recv, pkt_drop;
- uint64_t tx_stop_times, rx_stop_times, tx_poll_times, rx_ipi_num;
struct v3_dev_net_ops * net_ops;
v3_lock_t rx_lock, tx_lock;
virtio->virtio_cfg.host_features = 0; // (1 << VIRTIO_NET_F_MAC);
if ((v3_lock_init(&(virtio->rx_lock)) == -1) ||
- (v3_lock_init(&(virtio->tx_lock)) == -1)){
+ (v3_lock_init(&(virtio->tx_lock)) == -1)){
PrintError("Virtio NIC: Failure to init locks for net_state\n");
}
return 0;
}
-static int pkt_tx(struct guest_info *core, struct virtio_net_state * virtio, struct vring_desc * buf_desc)
+static int
+pkt_tx(struct guest_info * core,
+ struct virtio_net_state * virtio,
+ struct vring_desc * buf_desc)
{
uint8_t * buf = NULL;
uint32_t len = buf_desc->length;
return -ERR_VIRTIO_OTHER;
}
- return virtio->net_ops->send(buf, len, virtio->backend_data, NULL);
+ return virtio->net_ops->send(buf, len, virtio->backend_data);
}
-static int copy_data_to_desc(struct guest_info *core,
- struct virtio_net_state * virtio_state,
- struct vring_desc * desc,
- uchar_t * buf,
- uint_t buf_len,
- uint_t offset)
+static int
+copy_data_to_desc(struct guest_info * core,
+ struct virtio_net_state * virtio_state,
+ struct vring_desc * desc,
+ uchar_t * buf,
+ uint_t buf_len,
+ uint_t offset)
{
uint32_t len;
uint8_t * desc_buf = NULL;
queue->used->flags |= VRING_NO_NOTIFY_FLAG;
}
+
/* interrupt the guest, so the guest core get EXIT to Palacios
* this happens when there are either incoming pkts for the guest
* or the guest can start TX pkts again */
/* guest free some pkts from rx queue */
-static int handle_rx_kick(struct guest_info *core, struct virtio_net_state * virtio)
+static int handle_rx_kick(struct guest_info *core,
+ struct virtio_net_state * virtio)
{
unsigned long flags;
flags = v3_lock_irqsave(virtio->rx_lock);
virtio->net_ops->start_rx(virtio->backend_data);
- disable_cb(&virtio->rx_vq);
+ //disable_cb(&virtio->rx_vq);
v3_unlock_irqrestore(virtio->rx_lock, flags);
return 0;
}
-#ifdef CONFIG_VNET_PROFILE
-static void print_profile_info(struct virtio_net_state *virtio){
- PrintError("Virtio NIC: %p, sent: %lld, rxed: %lld, dropped: %lld, \
- tx_stop: %lld, rx_stop: %lld, poll_time: %lld, rx_ipi: %lld\n",
- virtio,
- virtio->pkt_sent,
- virtio->pkt_recv,
- virtio->pkt_drop,
- virtio->tx_stop_times,
- virtio->rx_stop_times,
- virtio->tx_poll_times,
- virtio->rx_ipi_num);
-}
-#endif
-static int handle_ctrl(struct guest_info *core, struct virtio_net_state * virtio) {
+static int handle_ctrl(struct guest_info *core,
+ struct virtio_net_state * virtio) {
return 0;
}
-static int handle_pkt_tx(struct guest_info *core, struct virtio_net_state * virtio_state)
+static int handle_pkt_tx(struct guest_info *core,
+ struct virtio_net_state * virtio_state)
{
struct virtio_queue * q = &(virtio_state->tx_vq);
struct virtio_net_hdr * hdr = NULL;
virtio_state->virtio_cfg.pci_isr = 0x1;
}
-
-#ifdef CONFIG_VNET_PROFILE
- static long min = 1024, max = 0, total=0;
- static int i=0;
- total += recved;
- i ++;
- if(recved > max) max = recved;
- if(recved < min) min = recved;
- if(total > 100000) {
- PrintError("VNIC: TX polling: %ld, min %ld, max %ld, avg: %ld pkts\n", total, min, max, total/i);
- min = 1024;
- max = 0;
- i = 1;
- total = 0;
- }
-#endif
-
-
return 0;
exit_error:
}
-#if 0 //for multicore VNET
-/* used for poll pkt from virtio nic by VNET
- * only when vnet is running on sidecore */
-static int handle_pkt_tx_sidecore(struct guest_info *core, struct virtio_net_state * virtio)
-{
- struct virtio_queue * q = &(virtio->tx_vq);
- struct virtio_net_hdr * hdr = NULL;
- int recved = 0;
- unsigned long flags;
-
- if (!q->ring_avail_addr) {
- return -ERR_VIRTIO_TXQ_NOSET;
- }
-
- flags = v3_lock_irqsave(virtio->tx_lock);
-
- while (q->cur_avail_idx != q->avail->index) {
- struct vring_desc * hdr_desc = NULL;
- addr_t hdr_addr = 0;
- uint16_t desc_idx = q->avail->ring[q->cur_avail_idx % q->queue_size];
- int desc_cnt = get_desc_count(q, desc_idx);
- uint32_t req_len = 0;
- int i = 0;
-
- hdr_desc = &(q->desc[desc_idx]);
- if (v3_gpa_to_hva(core, hdr_desc->addr_gpa, &(hdr_addr)) == -1) {
- PrintError("Could not translate block header address\n");
- goto exit_error;
- }
-
- hdr = (struct virtio_net_hdr*)hdr_addr;
- desc_idx = hdr_desc->next;
-
- if(desc_cnt > 2){
- PrintError("VNIC: merged rx buffer not supported\n");
- goto exit_error;
- }
-
- for (i = 0; i < desc_cnt - 1; i++) {
- struct vring_desc * buf_desc = &(q->desc[desc_idx]);
- if (pkt_tx_sidecore(core, virtio, buf_desc) < 0) {
- PrintError("Error handling nic operation\n");
- goto exit_error;
- }
-
- req_len += buf_desc->length;
- desc_idx = buf_desc->next;
- }
- recved ++;
-
- q->cur_avail_idx ++;
- }
-
- if(recved) PrintDebug("VNIC: Tx polling %d pkts\n", recved);
-
- v3_unlock_irqrestore(virtio->tx_lock, flags);
-
- return 0;
-
-exit_error:
-
- v3_unlock_irqrestore(virtio->tx_lock, flags);
- return -ERR_VIRTIO_OTHER;
-}
-
-
-/* called by VNET, to notify Virtio to update the tx_queue used index
- * used only when vnet running on sidecore */
-static int update_tx_queue(struct virtio_net_state * virtio, int handled_pkt){
- struct virtio_queue * q = &(virtio->tx_vq);
- unsigned long flags;
-
- if (!q->ring_avail_addr) {
- return -ERR_VIRTIO_TXQ_NOSET;
- }
-
- flags = v3_lock_irqsave(virtio->tx_lock);
- while(handled_pkt > 0){
- q->used->ring[q->used->index % q->queue_size].id = q->avail->ring[virtio->cur_notify_tx_idx % q->queue_size];
- q->used->ring[q->used->index % q->queue_size].length = req_len; // TODO:
- q->used->index ++;
- virtio->cur_notify_tx_idx ++;
- handled_pkt --;
- }
- v3_unlock_irqrestore(virtio->tx_lock, flags);
-
- if (handled_pkt && (!(q->avail->flags & VIRTIO_NO_IRQ_FLAG))) {
- v3_pci_raise_irq(virtio->virtio_dev->pci_bus, 0, virtio->pci_dev);
- virtio->virtio_cfg.pci_isr = 0x1;
-
- /* do we need to notify here? */
- notify_guest(virtio);
- }
-
- virtio->pkt_sent += handled_pkt;
-
-#ifdef CONFIG_VNET_PROFILE
- if (virtio->pkt_sent % 50000 == 0){
- long cur_time, time;
- rdtscll(cur_time);
- time = cur_time - virtio_state->last_sent_time;
- PrintError("Virtio NIC: last sent 50000 cycles: %ld\n",time);
- PrintError("Virtio NIC: sent: %ld, rxed: %ld, dropped: %ld\n",
- virtio->pkt_sent,
- virtio->pkt_recv,
- virtio->pkt_drop);
- rdtscll(virtio->last_sent_time);
- }
-#endif
-
-
- return 0;
-}
-#endif
-
static int virtio_setup_queue(struct guest_info *core,
- struct virtio_net_state * virtio_state,
- struct virtio_queue * queue,
- addr_t pfn,
- addr_t page_addr) {
+ struct virtio_net_state * virtio_state,
+ struct virtio_queue * queue,
+ addr_t pfn, addr_t page_addr) {
queue->pfn = pfn;
queue->ring_desc_addr = page_addr;
return 0;
}
-static int virtio_io_write(struct guest_info *core, uint16_t port, void * src, uint_t length, void * private_data)
+static int virtio_io_write(struct guest_info *core,
+ uint16_t port, void * src,
+ uint_t length, void * private_data)
{
struct virtio_net_state * virtio = (struct virtio_net_state *)private_data;
int port_idx = port % virtio->io_range_size;
-
PrintDebug("VIRTIO NIC %p Write for port %d (index=%d) len=%d, value=%x\n", private_data,
port, port_idx, length, *(uint32_t *)src);
switch (queue_idx) {
case 0:
virtio_setup_queue(core, virtio, &virtio->rx_vq, pfn, page_addr);
- disable_cb(&virtio->rx_vq);
+ //disable_cb(&virtio->rx_vq);
break;
case 1:
virtio_setup_queue(core, virtio, &virtio->tx_vq, pfn, page_addr);
- disable_cb(&virtio->tx_vq);
+ //disable_cb(&virtio->tx_vq);
break;
case 2:
virtio_setup_queue(core, virtio, &virtio->ctrl_vq, pfn, page_addr);
uint16_t queue_idx = *(uint16_t *)src;
if (queue_idx == 0){
handle_rx_kick(core, virtio);
- PrintError("rx kick\n");
} else if (queue_idx == 1){
- PrintError("tx kick\n");
if (handle_pkt_tx(core, virtio) == -1) {
PrintError("Could not handle NIC Notification\n");
return -1;
return length;
}
-static int virtio_io_read(struct guest_info *core, uint16_t port, void * dst, uint_t length, void * private_data)
+static int virtio_io_read(struct guest_info *core,
+ uint16_t port, void * dst,
+ uint_t length, void * private_data)
{
struct virtio_net_state * virtio = (struct virtio_net_state *)private_data;
int port_idx = port % virtio->io_range_size;
int ret_val = -ERR_VIRTIO_OTHER;
int raw = 1;
+#ifndef CONFIG_DEBUG_VIRTIO_NET
+ {
+ PrintDebug("Virtio-NIC: virtio_rx: size: %d\n", size);
+ //v3_hexdump(buf, size, NULL, 0);
+ }
+#endif
+
flags = v3_lock_irqsave(virtio->rx_lock);
virtio->pkt_recv ++;
(q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
if(virtio->virtio_dev->vm->cores[0].cpu_id != V3_Get_CPU()){
notify_guest(virtio);
- virtio->rx_ipi_num ++;
}
virtio->buffed_rx = 0;
}
/* RX queue is full, tell backend to stop RX on this device */
virtio->net_ops->stop_rx(virtio->backend_data);
enable_cb(&virtio->rx_vq);
-
- virtio->rx_stop_times ++;
ret_val = -ERR_VIRTIO_RXQ_FULL;
goto exit;
}
-#if 0 /* for encapuslation */
-/* virtio RX with encapulation version */
-static int virtio_rx_encap(uint8_t * data,
- uint32_t size,
- void * encap_header,
- uint16_t encap_len,
- void * private_data) {
- struct virtio_net_state * virtio = (struct virtio_net_state *)private_data;
- struct virtio_queue * q = &(virtio->rx_vq);
- struct virtio_net_hdr_mrg_rxbuf hdr;
- uint32_t hdr_len = sizeof(struct virtio_net_hdr_mrg_rxbuf);
- uint32_t data_len = size + encap_len;
- unsigned long flags;
- int ret_val = -ERR_VIRTIO_OTHER;
-
- if (q->ring_avail_addr == 0) {
- PrintError("Queue is not set\n");
- ret_val = -ERR_VIRTIO_RXQ_NOSET;
- goto exit;
- }
-
- memset(&hdr, 0, sizeof(struct virtio_net_hdr_mrg_rxbuf));
-
- flags = v3_lock_irqsave(virtio->rx_lock);
- if (q->cur_avail_idx != q->avail->index){
- addr_t hdr_addr = 0;
- uint16_t hdr_idx = q->avail->ring[q->cur_avail_idx % q->queue_size];
- uint16_t buf_idx = 0;
- struct vring_desc * hdr_desc = NULL;
- uint32_t offset = 0;
-
- hdr_desc = &(q->desc[hdr_idx]);
- if (guest_pa_to_host_va(&(virtio->virtio_dev->vm->cores[0]), hdr_desc->addr_gpa, &(hdr_addr)) == -1) {
- PrintError("Could not translate receive buffer address\n");
- goto exit;
- }
- hdr.num_buffers = 1;
- memcpy((void *)hdr_addr, &hdr, sizeof(struct virtio_net_hdr_mrg_rxbuf));
- if (offset >= data_len) {
- hdr_desc->flags &= ~VIRTIO_NEXT_FLAG;
- }
-
- struct vring_desc * buf_desc = NULL;
- uint32_t len = 0;
- buf_idx = hdr_desc->next;
- buf_desc = &(q->desc[buf_idx]);
-
- if(hdr_len > 0 && !encap_header) {
- len = copy_data_to_desc(&(virtio->virtio_dev->vm->cores[0]), virtio, buf_desc, encap_header, encap_len, 0);
- offset += len;
- }
-
- len = copy_data_to_desc(&(virtio->virtio_dev->vm->cores[0]), virtio, buf_desc, data + offset, data_len - offset, offset);
- offset += len;
-
- if(data_len < offset)/* if there is large pkt, need merge more buffer */
- PrintDebug("Virtio NIC: data pkt larger than RX queue buffer\n");
-
- buf_desc->length = offset;
- buf_desc->flags &= ~VIRTIO_NEXT_FLAG;
-
- 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 = data_len + hdr_len; /* This should be the total length of data sent to guest (header+pkt_data) */
- q->used->index++;
- q->cur_avail_idx++;
-
- /* notify guest
- * when it returns from EXIT, guest gets the virtio rx interrupt */
- if((++virtio->buffed_rx > q->queue_size/2) &&
- (q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
- if(virtio->virtio_dev->vm->cores[0].cpu_id != V3_Get_CPU()){
- notify_guest(virtio);
- }
- virtio->buffed_rx = 0;
- }
- ret_val = offset;
- } else {
- virtio->pkt_drop++;
- ret_val = -ERR_VIRTIO_RXQ_FULL;
- goto exit;
- }
- virtio->pkt_recv ++;
-
- if (!(q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
- PrintDebug("Raising IRQ %d\n", virtio->pci_dev->config_header.intr_line);
- v3_pci_raise_irq(virtio->virtio_dev->pci_bus, 0, virtio->pci_dev);
- virtio->virtio_cfg.pci_isr = 0x1;
- }
-
-#ifdef CONFIG_VNET_PROFILE
- if (virtio->pkt_recv % 50000 == 0){
- long cur_time, time;
- rdtscll(cur_time);
- time = cur_time - virtio->last_recv_time;
- PrintError("Virtio NIC: sent: %ld, rxed: %ld, dropped: %ld\n",
- virtio->pkt_sent,
- virtio->pkt_recv,
- virtio->pkt_drop);
- rdtscll(virtio->last_recv_time);
- }
-#endif
-
-exit:
-
- v3_unlock_irqrestore(virtio->rx_lock, flags);
-
- return ret_val;
-}
-#endif
-
-
-
static struct v3_device_ops dev_ops = {
.free = virtio_free,
- .reset = NULL,
- .start = NULL,
- .stop = NULL,
};
-#if 0 //temporary hacking LX
-static struct virtio_net_state *vnic_states[2] = {NULL, NULL};
-static int num_vnic = 0;
-
-void vnic_polling(void *data){
- struct v3_vm_info *info = (struct v3_vm_info *)data;
- if(vnic_states[0] != NULL && info == vnic_states[0]->virtio_dev->vm){
- handle_pkt_tx(&(info->cores[0]), vnic_states[0]);
- }
-
- if(vnic_states[1] != NULL && info == vnic_states[1]->virtio_dev->vm){
- handle_pkt_tx(&(info->cores[0]), vnic_states[1]);
- }
-}
-#endif
/* TODO: Issue here: which vm info it needs? calling VM or the device's own VM? */
-static void virtio_nic_poll(struct v3_vm_info *vm, void *data){
- struct virtio_net_state *virtio = (struct virtio_net_state *)data;
+static void virtio_nic_poll(struct v3_vm_info * vm, void * data){
+ struct virtio_net_state * virtio = (struct virtio_net_state *)data;
handle_pkt_tx(&(vm->cores[0]), virtio);
-
- virtio->tx_poll_times ++;
-
-#ifdef CONFIG_VNET_PROFILE
- static uint64_t last_time = 0;
- uint64_t time;
- rdtscll(time);
- if((time - last_time) > 5000000000){
- last_time = time;
- print_profile_info(virtio);
- }
-#endif
-}
-
-#if 0 /* NAPI */
-/* tx one pkt from guest */
-static int virtio_tx_pkt(struct guest_info *core, struct virtio_net_state * virtio_state){
-
-}
-
-static void virtio_nic_poll(struct v3_vm_info *vm, void *data, int budget){
-
-
}
-#endif
-
-
-static void virtio_start_tx(void *data){
+static void virtio_start_tx(void * data){
struct virtio_net_state * virtio = (struct virtio_net_state *)data;
+ unsigned long flags;
- /* do we need a lock here? */
+ flags = v3_lock_irqsave(virtio->tx_lock);
virtio->tx_disabled = 0;
- /* notify the device's guest it can start sending pkt */
+ /* notify the device's guest to start sending pkt */
if(virtio->virtio_dev->vm->cores[0].cpu_id != V3_Get_CPU()){
notify_guest(virtio);
}
+ v3_unlock_irqrestore(virtio->tx_lock, flags);
}
-static void virtio_stop_tx(void *data){
+static void virtio_stop_tx(void * data){
struct virtio_net_state * virtio = (struct virtio_net_state *)data;
+ unsigned long flags;
- /* do we need a lock here? */
+ flags = v3_lock_irqsave(virtio->tx_lock);
virtio->tx_disabled = 1;
- /* how do we stop the guest to exit to palacios for sending pkt? */
+ /* stop the guest to exit to palacios for sending pkt? */
if(virtio->virtio_dev->vm->cores[0].cpu_id != V3_Get_CPU()){
disable_cb(&virtio->tx_vq);
}
- virtio->tx_stop_times ++;
+ v3_unlock_irqrestore(virtio->tx_lock, flags);
}
-static int register_dev(struct virtio_dev_state * virtio, struct virtio_net_state * net_state)
+static int register_dev(struct virtio_dev_state * virtio,
+ struct virtio_net_state * net_state)
{
struct pci_device * pci_dev = NULL;
struct v3_pci_bar bars[6];
virtio_init_state(net_state);
-#if 0 //temporary hacking LX
- vnic_states[num_vnic ++] = net_state;
- PrintError("VNIC: num of vnic %d\n", num_vnic);
-#endif
-
return 0;
}
static int virtio_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_dev_state * virtio_state = NULL;
- char * name = v3_cfg_val(cfg, "name");
+ char * dev_id = v3_cfg_val(cfg, "ID");
- PrintDebug("Virtio NIC: Initializing VIRTIO Network device: %s\n", name);
+ PrintDebug("Virtio NIC: Initializing VIRTIO Network device: %s\n", dev_id);
if (pci_bus == NULL) {
PrintError("Virtio NIC: VirtIO devices require a PCI Bus");
virtio_state->pci_bus = pci_bus;
virtio_state->vm = vm;
- struct vm_device * dev = v3_allocate_device(name, &dev_ops, virtio_state);
+ struct vm_device * dev = v3_allocate_device(dev_id, &dev_ops, virtio_state);
if (v3_attach_device(vm, dev) == -1) {
- PrintError("Virtio NIC: Could not attach device %s\n", name);
+ PrintError("Virtio NIC: Could not attach device %s\n", dev_id);
return -1;
}
- if (v3_dev_add_net_frontend(vm, name, connect_fn, (void *)virtio_state) == -1) {
- PrintError("Virtio NIC: Could not register %s as net frontend\n", name);
+ if (v3_dev_add_net_frontend(vm, dev_id, connect_fn, (void *)virtio_state) == -1) {
+ PrintError("Virtio NIC: Could not register %s as net frontend\n", dev_id);
return -1;
}
