static u32
virtio_pci_get_mac (vlib_main_t * vm, virtio_if_t * vif)
{
- if (vif->remote_features & VIRTIO_FEATURE (VIRTIO_NET_F_MAC))
+ if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MAC))
{
virtio_pci_legacy_read_config (vm, vif, vif->mac_addr,
sizeof (vif->mac_addr), 0);
* Minimal driver: assumes link is up
*/
u16 status = 1;
- if (vif->remote_features & VIRTIO_FEATURE (VIRTIO_NET_F_STATUS))
+ if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_STATUS))
virtio_pci_legacy_read_config (vm, vif, &status, sizeof (status), /* mac */
6);
return status;
}
}
+struct virtio_ctrl_mq_status_hdr
+{
+ struct virtio_net_ctrl_hdr ctrl;
+ struct virtio_net_ctrl_mq num_mqs;
+ virtio_net_ctrl_ack status;
+};
+
+static int
+virtio_pci_enable_multiqueue (vlib_main_t * vm, virtio_if_t * vif,
+ u16 num_queues)
+{
+ virtio_main_t *vim = &virtio_main;
+ virtio_vring_t *vring = vif->cxq_vring;
+ u32 buffer_index;
+ vlib_buffer_t *b;
+ u16 used, next, avail;
+ u16 sz = vring->size;
+ u16 mask = sz - 1;
+ struct virtio_ctrl_mq_status_hdr mq_hdr, result;
+ virtio_net_ctrl_ack status = VIRTIO_NET_ERR;
+
+ mq_hdr.ctrl.class = VIRTIO_NET_CTRL_MQ;
+ mq_hdr.ctrl.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
+ mq_hdr.status = VIRTIO_NET_ERR;
+ mq_hdr.num_mqs.virtqueue_pairs = num_queues;
+
+ used = vring->desc_in_use;
+ next = vring->desc_next;
+ avail = vring->avail->idx;
+ struct vring_desc *d = &vring->desc[next];
+
+ if (vlib_buffer_alloc (vm, &buffer_index, 1))
+ b = vlib_get_buffer (vm, buffer_index);
+ else
+ return VIRTIO_NET_ERR;
+ /*
+ * current_data may not be initialized with 0 and may contain
+ * previous offset.
+ */
+ b->current_data = 0;
+ clib_memcpy (vlib_buffer_get_current (b), &mq_hdr,
+ sizeof (struct virtio_ctrl_mq_status_hdr));
+ d->flags = VRING_DESC_F_NEXT;
+ d->addr = vlib_buffer_get_current_pa (vm, b);
+ d->len = sizeof (struct virtio_net_ctrl_hdr);
+ vring->avail->ring[avail & mask] = next;
+ avail++;
+ next = (next + 1) & mask;
+ d->next = next;
+ used++;
+
+ d = &vring->desc[next];
+ d->flags = VRING_DESC_F_NEXT;
+ d->addr = vlib_buffer_get_current_pa (vm, b) +
+ STRUCT_OFFSET_OF (struct virtio_ctrl_mq_status_hdr, num_mqs);
+ d->len = sizeof (struct virtio_net_ctrl_mq);
+ next = (next + 1) & mask;
+ d->next = next;
+ used++;
+
+ d = &vring->desc[next];
+ d->flags = VRING_DESC_F_WRITE;
+ d->addr = vlib_buffer_get_current_pa (vm, b) +
+ STRUCT_OFFSET_OF (struct virtio_ctrl_mq_status_hdr, status);
+ d->len = sizeof (mq_hdr.status);
+ next = (next + 1) & mask;
+ used++;
+
+ CLIB_MEMORY_STORE_BARRIER ();
+ vring->avail->idx = avail;
+ vring->desc_next = next;
+ vring->desc_in_use = used;
+
+ if ((vring->used->flags & VIRTIO_RING_FLAG_MASK_INT) == 0)
+ {
+ virtio_kick (vm, vring, vif);
+ }
+
+ clib_memset (&result, 0, sizeof (result));
+ u16 last = vring->last_used_idx, n_left = 0;
+ n_left = vring->used->idx - last;
+
+ while (n_left)
+ {
+ struct vring_used_elem *e = &vring->used->ring[last & mask];
+ u16 slot = e->id;
+
+ d = &vring->desc[slot];
+ while (d->flags & VRING_DESC_F_NEXT)
+ {
+ used--;
+ slot = d->next;
+ d = &vring->desc[slot];
+ }
+ used--;
+ last++;
+ n_left--;
+ }
+ vring->desc_in_use = used;
+ vring->last_used_idx = last;
+
+ CLIB_MEMORY_BARRIER ();
+ clib_memcpy (&result, vlib_buffer_get_current (b),
+ sizeof (struct virtio_ctrl_mq_status_hdr));
+
+ virtio_log_debug (vim, vif, "multi-queue enable status on Ctrl queue : %u",
+ result.status);
+ status = result.status;
+ vlib_buffer_free (vm, &buffer_index, 1);
+ return status;
+}
+
static u8
virtio_pci_queue_size_valid (u16 qsz)
{
}
clib_error_t *
-virtio_pci_vring_init (vlib_main_t * vm, virtio_if_t * vif, u16 idx)
+virtio_pci_control_vring_init (vlib_main_t * vm, virtio_if_t * vif,
+ u16 queue_num)
{
clib_error_t *error = 0;
+ virtio_main_t *vim = &virtio_main;
u16 queue_size = 0;
virtio_vring_t *vring;
struct vring vr;
u32 i = 0;
- void *ptr;
+ void *ptr = NULL;
- queue_size = virtio_pci_legacy_get_queue_num (vm, vif, idx);
+ queue_size = virtio_pci_legacy_get_queue_num (vm, vif, queue_num);
if (!virtio_pci_queue_size_valid (queue_size))
clib_warning ("queue size is not valid");
if (queue_size == 0)
queue_size = 256;
- vec_validate_aligned (vif->vrings, idx, CLIB_CACHE_LINE_BYTES);
- vring = vec_elt_at_index (vif->vrings, idx);
+ vec_validate_aligned (vif->cxq_vring, 0, CLIB_CACHE_LINE_BYTES);
+ vring = vec_elt_at_index (vif->cxq_vring, 0);
+ i = vring_size (queue_size, VIRTIO_PCI_VRING_ALIGN);
+ i = round_pow2 (i, VIRTIO_PCI_VRING_ALIGN);
+ ptr =
+ vlib_physmem_alloc_aligned_on_numa (vm, i, VIRTIO_PCI_VRING_ALIGN,
+ vif->numa_node);
+ if (!ptr)
+ return vlib_physmem_last_error (vm);
+ clib_memset (ptr, 0, i);
+ vring_init (&vr, queue_size, ptr, VIRTIO_PCI_VRING_ALIGN);
+ vring->desc = vr.desc;
+ vring->avail = vr.avail;
+ vring->used = vr.used;
+ vring->queue_id = queue_num;
+ vring->avail->flags = VIRTIO_RING_FLAG_MASK_INT;
+
+ ASSERT (vring->buffers == 0);
+
+ vring->size = queue_size;
+ virtio_log_debug (vim, vif, "control-queue: number %u, size %u", queue_num,
+ queue_size);
+ virtio_pci_legacy_setup_queue (vm, vif, queue_num, ptr);
+ vring->kick_fd = -1;
+
+ return error;
+}
+
+clib_error_t *
+virtio_pci_vring_init (vlib_main_t * vm, virtio_if_t * vif, u16 queue_num)
+{
+ clib_error_t *error = 0;
+ virtio_main_t *vim = &virtio_main;
+ vlib_thread_main_t *vtm = vlib_get_thread_main ();
+ u16 queue_size = 0;
+ virtio_vring_t *vring;
+ struct vring vr;
+ u32 i = 0;
+ void *ptr = NULL;
+
+ queue_size = virtio_pci_legacy_get_queue_num (vm, vif, queue_num);
+ if (!virtio_pci_queue_size_valid (queue_size))
+ clib_warning ("queue size is not valid");
+
+ if (!is_pow2 (queue_size))
+ return clib_error_return (0, "ring size must be power of 2");
+
+ if (queue_size > 32768)
+ return clib_error_return (0, "ring size must be 32768 or lower");
+
+ if (queue_size == 0)
+ queue_size = 256;
+ if (queue_num % 2)
+ {
+ if (TX_QUEUE_ACCESS (queue_num) > vtm->n_vlib_mains)
+ return error;
+ vec_validate_aligned (vif->txq_vrings, TX_QUEUE_ACCESS (queue_num),
+ CLIB_CACHE_LINE_BYTES);
+ vring = vec_elt_at_index (vif->txq_vrings, TX_QUEUE_ACCESS (queue_num));
+ clib_spinlock_init (&vring->lockp);
+ }
+ else
+ {
+ vec_validate_aligned (vif->rxq_vrings, RX_QUEUE_ACCESS (queue_num),
+ CLIB_CACHE_LINE_BYTES);
+ vring = vec_elt_at_index (vif->rxq_vrings, RX_QUEUE_ACCESS (queue_num));
+ }
i = vring_size (queue_size, VIRTIO_PCI_VRING_ALIGN);
i = round_pow2 (i, VIRTIO_PCI_VRING_ALIGN);
- ptr = vlib_physmem_alloc_aligned (vm, i, VIRTIO_PCI_VRING_ALIGN);
- memset (ptr, 0, i);
+ ptr =
+ vlib_physmem_alloc_aligned_on_numa (vm, i, VIRTIO_PCI_VRING_ALIGN,
+ vif->numa_node);
+ if (!ptr)
+ return vlib_physmem_last_error (vm);
+ clib_memset (ptr, 0, i);
vring_init (&vr, queue_size, ptr, VIRTIO_PCI_VRING_ALIGN);
vring->desc = vr.desc;
vring->avail = vr.avail;
vring->used = vr.used;
- vring->queue_id = idx;
+ vring->queue_id = queue_num;
vring->avail->flags = VIRTIO_RING_FLAG_MASK_INT;
ASSERT (vring->buffers == 0);
ASSERT (vring->indirect_buffers == 0);
vec_validate_aligned (vring->indirect_buffers, queue_size,
CLIB_CACHE_LINE_BYTES);
- if (idx % 2)
+ if (queue_num % 2)
{
u32 n_alloc = 0;
do
queue_size - n_alloc);
}
while (n_alloc != queue_size);
- vif->tx_ring_sz = queue_size;
+ vif->num_txqs++;
+ virtio_log_debug (vim, vif, "tx-queue: number %u, size %u", queue_num,
+ queue_size);
}
else
- vif->rx_ring_sz = queue_size;
+ {
+ vif->num_rxqs++;
+ virtio_log_debug (vim, vif, "rx-queue: number %u, size %u", queue_num,
+ queue_size);
+ }
vring->size = queue_size;
-
- virtio_pci_legacy_setup_queue (vm, vif, idx, ptr);
+ virtio_pci_legacy_setup_queue (vm, vif, queue_num, ptr);
vring->kick_fd = -1;
return error;
| VIRTIO_FEATURE (VIRTIO_NET_F_MAC)
| VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF)
| VIRTIO_FEATURE (VIRTIO_NET_F_STATUS)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_MQ)
| VIRTIO_FEATURE (VIRTIO_F_NOTIFY_ON_EMPTY)
| VIRTIO_FEATURE (VIRTIO_F_ANY_LAYOUT)
| VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC);
vif->features = req_features & vif->remote_features & supported_features;
- if (vif->
- remote_features & vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MTU))
+ if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MTU))
{
virtio_net_config_t config;
virtio_pci_legacy_read_config (vm, vif, &config.mtu,
u8 status = 0;
if ((error = virtio_pci_read_caps (vm, vif)))
- clib_error_return (error, "Device not supported");
+ clib_error_return (error, "Device is not supported");
if (virtio_pci_reset_device (vm, vif) < 0)
{
}
vif->status = status;
+ /*
+ * get or set the mac address
+ */
if (virtio_pci_get_mac (vm, vif))
{
f64 now = vlib_time_now (vm);
virtio_set_net_hdr_size (vif);
+ /*
+ * Initialize the virtqueues
+ */
if ((error = virtio_pci_get_max_virtqueue_pairs (vm, vif)))
goto error;
- if ((error = virtio_pci_vring_init (vm, vif, 0)))
- goto error;
+ for (int i = 0; i < vif->max_queue_pairs; i++)
+ {
+ if ((error = virtio_pci_vring_init (vm, vif, RX_QUEUE (i))))
+ virtio_log_warning (vim, vif, "%s (%u) %s", "error in rxq-queue",
+ RX_QUEUE (i), "initialization");
- if ((error = virtio_pci_vring_init (vm, vif, 1)))
- goto error;
+ if ((error = virtio_pci_vring_init (vm, vif, TX_QUEUE (i))))
+ virtio_log_warning (vim, vif, "%s (%u) %s", "error in txq-queue",
+ TX_QUEUE (i), "initialization");
+ }
+ if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ))
+ {
+ if ((error =
+ virtio_pci_control_vring_init (vm, vif, vif->max_queue_pairs * 2)))
+ {
+ virtio_log_warning (vim, vif, "%s (%u) %s",
+ "error in control-queue",
+ vif->max_queue_pairs * 2, "initialization");
+ if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MQ))
+ vif->features &= ~VIRTIO_FEATURE (VIRTIO_NET_F_MQ);
+ }
+ }
+ else
+ {
+ virtio_log_debug (vim, vif, "control queue is not available");
+ vif->cxq_vring = NULL;
+ }
+
+ /*
+ * set the msix interrupts
+ */
if (vif->msix_enabled == VIRTIO_MSIX_ENABLED)
{
if (virtio_pci_legacy_set_config_irq (vm, vif, 1) ==
VIRTIO_MSI_NO_VECTOR)
virtio_log_warning (vim, vif, "queue vector 0 is not set");
}
+
+ /*
+ * set the driver status OK
+ */
virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_DRIVER_OK);
vif->status = virtio_pci_legacy_get_status (vm, vif);
error:
}
vif->pci_dev_handle = h;
vlib_pci_set_private_data (vm, h, vif->dev_instance);
+ vif->numa_node = vlib_pci_get_numa_node (vm, h);
if ((error = vlib_pci_bus_master_enable (vm, h)))
{
hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
vnet_hw_interface_set_input_node (vnm, vif->hw_if_index,
virtio_input_node.index);
- vnet_hw_interface_assign_rx_thread (vnm, vif->hw_if_index, 0, ~0);
- virtio_vring_set_numa_node (vm, vif, 0);
-
- vnet_hw_interface_set_rx_mode (vnm, vif->hw_if_index, 0,
- VNET_HW_INTERFACE_RX_MODE_POLLING);
+ u32 i = 0;
+ vec_foreach_index (i, vif->rxq_vrings)
+ {
+ vnet_hw_interface_assign_rx_thread (vnm, vif->hw_if_index, i, ~0);
+ virtio_vring_set_numa_node (vm, vif, RX_QUEUE (i));
+ /* Set default rx mode to POLLING */
+ vnet_hw_interface_set_rx_mode (vnm, vif->hw_if_index, i,
+ VNET_HW_INTERFACE_RX_MODE_POLLING);
+ }
if (virtio_pci_is_link_up (vm, vif) & VIRTIO_NET_S_LINK_UP)
{
vif->flags |= VIRTIO_IF_FLAG_ADMIN_UP;
}
else
vnet_hw_interface_set_flags (vnm, vif->hw_if_index, 0);
+
+ if ((vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ)) &&
+ (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MQ)))
+ {
+ if (virtio_pci_enable_multiqueue (vm, vif, vif->max_queue_pairs))
+ virtio_log_warning (vim, vif, "multiqueue is not set");
+ }
return;
error:
vlib_pci_intr_disable (vm, vif->pci_dev_handle);
- virtio_pci_legacy_del_queue (vm, vif, 0);
- virtio_pci_legacy_del_queue (vm, vif, 1);
+ for (i = 0; i < vif->max_queue_pairs; i++)
+ {
+ virtio_pci_legacy_del_queue (vm, vif, RX_QUEUE (i));
+ virtio_pci_legacy_del_queue (vm, vif, TX_QUEUE (i));
+ }
+
+ if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ))
+ virtio_pci_legacy_del_queue (vm, vif, vif->max_queue_pairs * 2);
virtio_pci_legacy_reset (vm, vif);
if (vif->hw_if_index)
{
vnet_hw_interface_set_flags (vnm, vif->hw_if_index, 0);
- vnet_hw_interface_unassign_rx_thread (vnm, vif->hw_if_index, 0);
+ vec_foreach_index (i, vif->rxq_vrings)
+ {
+ vnet_hw_interface_unassign_rx_thread (vnm, vif->hw_if_index, i);
+ }
ethernet_delete_interface (vnm, vif->hw_if_index);
}
vlib_pci_device_close (vm, vif->pci_dev_handle);
- vec_foreach_index (i, vif->vrings)
+ vec_foreach_index (i, vif->rxq_vrings)
{
- virtio_vring_t *vring = vec_elt_at_index (vif->vrings, i);
+ virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, i);
if (vring->kick_fd != -1)
close (vring->kick_fd);
if (vring->used)
{
- if ((i & 1) == 1)
- virtio_free_used_desc (vm, vring);
- else
- virtio_free_rx_buffers (vm, vring);
+ virtio_free_rx_buffers (vm, vring);
+ }
+ vec_free (vring->buffers);
+ vec_free (vring->indirect_buffers);
+ vlib_physmem_free (vm, vring->desc);
+ }
+
+ vec_foreach_index (i, vif->txq_vrings)
+ {
+ virtio_vring_t *vring = vec_elt_at_index (vif->txq_vrings, i);
+ if (vring->kick_fd != -1)
+ close (vring->kick_fd);
+ if (vring->used)
+ {
+ virtio_free_used_desc (vm, vring);
}
if (vring->queue_id % 2)
{
vlib_physmem_free (vm, vring->desc);
}
- vec_free (vif->vrings);
+ if (vif->cxq_vring != NULL)
+ {
+ u16 last = vif->cxq_vring->last_used_idx;
+ u16 n_left = vif->cxq_vring->used->idx - last;
+ while (n_left)
+ {
+ last++;
+ n_left--;
+ }
+
+ vif->cxq_vring->last_used_idx = last;
+ vlib_physmem_free (vm, vif->cxq_vring->desc);
+ }
+
+ vec_free (vif->rxq_vrings);
+ vec_free (vif->txq_vrings);
+ vec_free (vif->cxq_vring);
if (vif->fd != -1)
vif->fd = -1;
Code Review / vpp.git / blobdiff