#define PCI_MSIX_ENABLE 0x8000
-#define PCI_CONFIG_SIZE(vif) ((vif->msix_enabled == VIRTIO_MSIX_ENABLED) ? \
- 24 : 20)
-
static pci_device_id_t virtio_pci_device_ids[] = {
{
.vendor_id = PCI_VENDOR_ID_VIRTIO,
{0},
};
-static void
-virtio_pci_legacy_read_config (vlib_main_t * vm, virtio_if_t * vif, void *dst,
- int len, u32 addr)
-{
- u32 size = 0;
- vlib_pci_dev_handle_t h = vif->pci_dev_handle;
-
- while (len > 0)
- {
- if (len >= 4)
- {
- size = 4;
- vlib_pci_read_io_u32 (vm, h, PCI_CONFIG_SIZE (vif) + addr, dst);
- }
- else if (len >= 2)
- {
- size = 2;
- vlib_pci_read_io_u16 (vm, h, PCI_CONFIG_SIZE (vif) + addr, dst);
- }
- else
- {
- size = 1;
- vlib_pci_read_io_u8 (vm, h, PCI_CONFIG_SIZE (vif) + addr, dst);
- }
- dst = (u8 *) dst + size;
- addr += size;
- len -= size;
- }
-}
-
-static void
-virtio_pci_legacy_write_config (vlib_main_t * vm, virtio_if_t * vif,
- void *src, int len, u32 addr)
-{
- u32 size = 0;
- vlib_pci_dev_handle_t h = vif->pci_dev_handle;
-
- while (len > 0)
- {
- if (len >= 4)
- {
- size = 4;
- vlib_pci_write_io_u32 (vm, h, PCI_CONFIG_SIZE (vif) + addr, src);
- }
- else if (len >= 2)
- {
- size = 2;
- vlib_pci_write_io_u16 (vm, h, PCI_CONFIG_SIZE (vif) + addr, src);
- }
- else
- {
- size = 1;
- vlib_pci_write_io_u8 (vm, h, PCI_CONFIG_SIZE (vif) + addr, src);
- }
- src = (u8 *) src + size;
- addr += size;
- len -= size;
- }
-}
-
-static u64
-virtio_pci_legacy_get_features (vlib_main_t * vm, virtio_if_t * vif)
-{
- u32 features;
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_HOST_FEATURES,
- &features);
- return features;
-}
-
-static u32
-virtio_pci_legacy_set_features (vlib_main_t * vm, virtio_if_t * vif,
- u64 features)
-{
- if ((features >> 32) != 0)
- {
- clib_warning ("only 32 bit features are allowed for legacy virtio!");
- }
- u32 feature = 0, guest_features = (u32) features;
- vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
- &guest_features);
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
- &feature);
- return feature;
-}
-
-static u8
-virtio_pci_legacy_get_status (vlib_main_t * vm, virtio_if_t * vif)
-{
- u8 status = 0;
- vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_STATUS, &status);
- return status;
-}
-
-static void
-virtio_pci_legacy_set_status (vlib_main_t * vm, virtio_if_t * vif, u8 status)
-{
- if (status != VIRTIO_CONFIG_STATUS_RESET)
- status |= virtio_pci_legacy_get_status (vm, vif);
- vlib_pci_write_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_STATUS, &status);
-}
-
-static u8
-virtio_pci_legacy_reset (vlib_main_t * vm, virtio_if_t * vif)
-{
- virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_RESET);
- return virtio_pci_legacy_get_status (vm, vif);
-}
-
-static u8
-virtio_pci_legacy_get_isr (vlib_main_t * vm, virtio_if_t * vif)
-{
- u8 isr = 0;
- vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_ISR, &isr);
- return isr;
-}
-
-static u16
-virtio_pci_legacy_get_queue_num (vlib_main_t * vm, virtio_if_t * vif,
- u16 queue_id)
-{
- u16 queue_num = 0;
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NUM,
- &queue_num);
- return queue_num;
-}
-
-static int
-virtio_pci_legacy_setup_queue (vlib_main_t * vm, virtio_if_t * vif,
- u16 queue_id, void *p)
-{
- u64 addr = vlib_physmem_get_pa (vm, p) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
- u32 addr2 = 0;
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
- (u32 *) & addr);
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
- &addr2);
- if ((u32) addr == addr2)
- return 0;
- return 1;
-}
-
-static void
-virtio_pci_legacy_del_queue (vlib_main_t * vm, virtio_if_t * vif,
- u16 queue_id)
-{
- u32 src = 0;
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_write_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN, &src);
-}
-
-inline void
-virtio_pci_legacy_notify_queue (vlib_main_t * vm, virtio_if_t * vif,
- u16 queue_id)
-{
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NOTIFY,
- &queue_id);
-}
-
-/* Enable one vector (0) for Link State Intrerrupt */
-static u16
-virtio_pci_legacy_set_config_irq (vlib_main_t * vm, virtio_if_t * vif,
- u16 vec)
-{
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_CONFIG_VECTOR,
- &vec);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_CONFIG_VECTOR,
- &vec);
- return vec;
-}
-
-static u16
-virtio_pci_legacy_set_queue_irq (vlib_main_t * vm, virtio_if_t * vif, u16 vec,
- u16 queue_id)
-{
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_QUEUE_VECTOR,
- &vec);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_QUEUE_VECTOR,
- &vec);
- return vec;
-}
-
static u32
virtio_pci_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw,
u32 flags)
static clib_error_t *
virtio_pci_get_max_virtqueue_pairs (vlib_main_t * vm, virtio_if_t * vif)
{
- virtio_main_t *vim = &virtio_main;
- virtio_net_config_t config;
clib_error_t *error = 0;
u16 max_queue_pairs = 1;
if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MQ))
{
- virtio_pci_legacy_read_config (vm, vif, &config.max_virtqueue_pairs,
- sizeof (config.max_virtqueue_pairs),
- STRUCT_OFFSET_OF (virtio_net_config_t,
- max_virtqueue_pairs));
- max_queue_pairs = config.max_virtqueue_pairs;
+ max_queue_pairs = vif->virtio_pci_func->get_max_queue_pairs (vm, vif);
}
- virtio_log_debug (vim, vif, "max queue pair is %x", max_queue_pairs);
+ virtio_log_debug (vif, "max queue pair is %x", max_queue_pairs);
if (max_queue_pairs < 1 || max_queue_pairs > 0x8000)
- return clib_error_return (error, "max queue pair is %x", max_queue_pairs);
+ return clib_error_return (error, "max queue pair is %x,"
+ " should be in range [1, 0x8000]",
+ max_queue_pairs);
vif->max_queue_pairs = max_queue_pairs;
return error;
static void
virtio_pci_set_mac (vlib_main_t * vm, virtio_if_t * vif)
{
- virtio_pci_legacy_write_config (vm, vif, vif->mac_addr,
- sizeof (vif->mac_addr), 0);
+ if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MAC))
+ vif->virtio_pci_func->set_mac (vm, vif);
}
static u32
{
if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MAC))
{
- virtio_pci_legacy_read_config (vm, vif, vif->mac_addr,
- sizeof (vif->mac_addr), 0);
+ vif->virtio_pci_func->get_mac (vm, vif);
return 0;
}
return 1;
*/
u16 status = 1;
if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_STATUS))
- virtio_pci_legacy_read_config (vm, vif, &status, sizeof (status), /* mac */
- STRUCT_OFFSET_OF (virtio_net_config_t,
- status));
+ status = vif->virtio_pci_func->get_device_status (vm, vif);
return status;
}
static void
-virtio_pci_irq_0_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, u16 line)
+virtio_pci_irq_queue_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h,
+ u16 line)
{
vnet_main_t *vnm = vnet_get_main ();
virtio_main_t *vim = &virtio_main;
uword pd = vlib_pci_get_private_data (vm, h);
virtio_if_t *vif = pool_elt_at_index (vim->interfaces, pd);
+ line--;
u16 qid = line;
vnet_device_input_set_interrupt_pending (vnm, vif->hw_if_index, qid);
}
static void
-virtio_pci_irq_1_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, u16 line)
+virtio_pci_irq_config_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h,
+ u16 line)
{
vnet_main_t *vnm = vnet_get_main ();
virtio_main_t *vim = &virtio_main;
u8 isr = 0;
u16 line = 0;
- isr = virtio_pci_legacy_get_isr (vm, vif);
+ isr = vif->virtio_pci_func->get_isr (vm, vif);
/*
* If the lower bit is set: look through the used rings of
* been made by the device which requires servicing.
*/
if (isr & VIRTIO_PCI_ISR_INTR)
- virtio_pci_irq_0_handler (vm, h, line);
+ {
+ for (; line < vif->num_rxqs; line++)
+ virtio_pci_irq_queue_handler (vm, h, (line + 1));
+ }
if (isr & VIRTIO_PCI_ISR_CONFIG)
- virtio_pci_irq_1_handler (vm, h, line);
+ virtio_pci_irq_config_handler (vm, h, line);
}
inline void
}
}
-inline void
-debug_device_config_space (vlib_main_t * vm, virtio_if_t * vif)
+static int
+virtio_pci_send_ctrl_msg_packed (vlib_main_t * vm, virtio_if_t * vif,
+ virtio_ctrl_msg_t * data, u32 len)
{
- u32 data_u32;
- u16 data_u16;
- u8 data_u8;
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_HOST_FEATURES,
- &data_u32);
- vlib_cli_output (vm, "remote features 0x%lx", data_u32);
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_GUEST_FEATURES,
- &data_u32);
- vlib_cli_output (vm, "guest features 0x%lx", data_u32);
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_PFN,
- &data_u32);
- vlib_cli_output (vm, "queue address 0x%lx", data_u32);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NUM,
- &data_u16);
- vlib_cli_output (vm, "queue size 0x%x", data_u16);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &data_u16);
- vlib_cli_output (vm, "queue select 0x%x", data_u16);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_NOTIFY,
- &data_u16);
- vlib_cli_output (vm, "queue notify 0x%x", data_u16);
- vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_STATUS, &data_u8);
- vlib_cli_output (vm, "status 0x%x", data_u8);
- vlib_pci_read_io_u8 (vm, vif->pci_dev_handle, VIRTIO_PCI_ISR, &data_u8);
- vlib_cli_output (vm, "isr 0x%x", data_u8);
+ virtio_vring_t *vring = vif->cxq_vring;
+ virtio_net_ctrl_ack_t status = VIRTIO_NET_ERR;
+ virtio_ctrl_msg_t result;
+ u32 buffer_index;
+ vlib_buffer_t *b;
+ u16 used, next;
+ u16 sz = vring->size;
+ u16 flags = 0, first_desc_flags = 0;
- if (vif->msix_enabled == VIRTIO_MSIX_ENABLED)
+ used = vring->desc_in_use;
+ next = vring->desc_next;
+ vring_packed_desc_t *d = &vring->packed_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), data, sizeof (virtio_ctrl_msg_t));
+
+ first_desc_flags = VRING_DESC_F_NEXT;
+ if (vring->avail_wrap_counter)
{
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_CONFIG_VECTOR,
- &data_u16);
- vlib_cli_output (vm, "config vector 0x%x", data_u16);
- u16 queue_id = 0;
- vlib_pci_write_io_u16 (vm, vif->pci_dev_handle, VIRTIO_PCI_QUEUE_SEL,
- &queue_id);
- vlib_pci_read_io_u16 (vm, vif->pci_dev_handle, VIRTIO_MSI_QUEUE_VECTOR,
- &data_u16);
- vlib_cli_output (vm, "queue vector for queue (0) 0x%x", data_u16);
- }
-
- u8 mac[6];
- virtio_pci_legacy_read_config (vm, vif, mac, sizeof (mac), 0);
- vlib_cli_output (vm, "mac %U", format_ethernet_address, mac);
- virtio_pci_legacy_read_config (vm, vif, &data_u16, sizeof (u16), /* offset to status */
- 6);
- vlib_cli_output (vm, "link up/down status 0x%x", data_u16);
- virtio_pci_legacy_read_config (vm, vif, &data_u16, sizeof (u16),
- /* offset to max_virtqueue */ 8);
- vlib_cli_output (vm, "num of virtqueue 0x%x", data_u16);
- virtio_pci_legacy_read_config (vm, vif, &data_u16, sizeof (u16), /* offset to mtu */
- 10);
- vlib_cli_output (vm, "mtu 0x%x", data_u16);
-
- u32 i = PCI_CONFIG_SIZE (vif) + 12, a = 4;
- i += a;
- i &= ~a;
- for (; i < 64; i += 4)
- {
- u32 data = 0;
- vlib_pci_read_io_u32 (vm, vif->pci_dev_handle, i, &data);
- vlib_cli_output (vm, "0x%lx", data);
+ first_desc_flags |= VRING_DESC_F_AVAIL;
+ first_desc_flags &= ~VRING_DESC_F_USED;
}
-}
+ else
+ {
+ first_desc_flags &= ~VRING_DESC_F_AVAIL;
+ first_desc_flags |= VRING_DESC_F_USED;
+ }
+ d->addr = vlib_buffer_get_current_pa (vm, b);
+ d->len = sizeof (virtio_net_ctrl_hdr_t);
+ d->id = next;
-struct virtio_ctrl_msg
-{
- struct virtio_net_ctrl_hdr ctrl;
- virtio_net_ctrl_ack status;
- u8 data[1024];
-};
+ next++;
+ if (next >= sz)
+ {
+ next = 0;
+ vring->avail_wrap_counter ^= 1;
+ }
+ used++;
+
+ d = &vring->packed_desc[next];
+ flags = VRING_DESC_F_NEXT;
+ if (vring->avail_wrap_counter)
+ {
+ flags |= VRING_DESC_F_AVAIL;
+ flags &= ~VRING_DESC_F_USED;
+ }
+ else
+ {
+ flags &= ~VRING_DESC_F_AVAIL;
+ flags |= VRING_DESC_F_USED;
+ }
+ d->addr = vlib_buffer_get_current_pa (vm, b) +
+ STRUCT_OFFSET_OF (virtio_ctrl_msg_t, data);
+ d->len = len;
+ d->id = next;
+ d->flags = flags;
+
+ next++;
+ if (next >= sz)
+ {
+ next = 0;
+ vring->avail_wrap_counter ^= 1;
+ }
+ used++;
+
+ d = &vring->packed_desc[next];
+ flags = VRING_DESC_F_WRITE;
+ if (vring->avail_wrap_counter)
+ {
+ flags |= VRING_DESC_F_AVAIL;
+ flags &= ~VRING_DESC_F_USED;
+ }
+ else
+ {
+ flags &= ~VRING_DESC_F_AVAIL;
+ flags |= VRING_DESC_F_USED;
+ }
+ d->addr = vlib_buffer_get_current_pa (vm, b) +
+ STRUCT_OFFSET_OF (virtio_ctrl_msg_t, status);
+ d->len = sizeof (data->status);
+ d->id = next;
+ d->flags = flags;
+
+ next++;
+ if (next >= sz)
+ {
+ next = 0;
+ vring->avail_wrap_counter ^= 1;
+ }
+ used++;
+
+ CLIB_MEMORY_STORE_BARRIER ();
+ vring->packed_desc[vring->desc_next].flags = first_desc_flags;
+ vring->desc_next = next;
+ vring->desc_in_use = used;
+ CLIB_MEMORY_BARRIER ();
+ if (vring->device_event->flags != VRING_EVENT_F_DISABLE)
+ {
+ virtio_kick (vm, vring, vif);
+ }
+
+ u16 last = vring->last_used_idx;
+ d = &vring->packed_desc[last];
+ do
+ {
+ flags = d->flags;
+ }
+ while ((flags & VRING_DESC_F_AVAIL) != (vring->used_wrap_counter << 7)
+ || (flags & VRING_DESC_F_USED) != (vring->used_wrap_counter << 15));
+
+ last += 3;
+ if (last >= vring->size)
+ {
+ last = last - vring->size;
+ vring->used_wrap_counter ^= 1;
+ }
+ vring->desc_in_use -= 3;
+ vring->last_used_idx = last;
+
+ CLIB_MEMORY_BARRIER ();
+ clib_memcpy (&result, vlib_buffer_get_current (b),
+ sizeof (virtio_ctrl_msg_t));
+ virtio_log_debug (vif, "ctrl-queue: status %u", result.status);
+ status = result.status;
+ vlib_buffer_free (vm, &buffer_index, 1);
+ return status;
+}
static int
-virtio_pci_send_ctrl_msg (vlib_main_t * vm, virtio_if_t * vif,
- struct virtio_ctrl_msg *data, u32 len)
+virtio_pci_send_ctrl_msg_split (vlib_main_t * vm, virtio_if_t * vif,
+ virtio_ctrl_msg_t * data, u32 len)
{
- virtio_main_t *vim = &virtio_main;
virtio_vring_t *vring = vif->cxq_vring;
- virtio_net_ctrl_ack status = VIRTIO_NET_ERR;
- struct virtio_ctrl_msg result;
+ virtio_net_ctrl_ack_t status = VIRTIO_NET_ERR;
+ virtio_ctrl_msg_t result;
u32 buffer_index;
vlib_buffer_t *b;
u16 used, next, avail;
used = vring->desc_in_use;
next = vring->desc_next;
avail = vring->avail->idx;
- struct vring_desc *d = &vring->desc[next];
+ vring_desc_t *d = &vring->desc[next];
if (vlib_buffer_alloc (vm, &buffer_index, 1))
b = vlib_get_buffer (vm, buffer_index);
* previous offset.
*/
b->current_data = 0;
- clib_memcpy (vlib_buffer_get_current (b), data,
- sizeof (struct virtio_ctrl_msg));
+ clib_memcpy (vlib_buffer_get_current (b), data, sizeof (virtio_ctrl_msg_t));
d->flags = VRING_DESC_F_NEXT;
d->addr = vlib_buffer_get_current_pa (vm, b);
- d->len = sizeof (struct virtio_net_ctrl_hdr);
+ d->len = sizeof (virtio_net_ctrl_hdr_t);
vring->avail->ring[avail & mask] = next;
avail++;
next = (next + 1) & mask;
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_msg, data);
+ STRUCT_OFFSET_OF (virtio_ctrl_msg_t, data);
d->len = len;
next = (next + 1) & mask;
d->next = next;
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_msg, status);
+ STRUCT_OFFSET_OF (virtio_ctrl_msg_t, status);
d->len = sizeof (data->status);
next = (next + 1) & mask;
used++;
while (n_left)
{
- struct vring_used_elem *e = &vring->used->ring[last & mask];
+ vring_used_elem_t *e = &vring->used->ring[last & mask];
u16 slot = e->id;
d = &vring->desc[slot];
CLIB_MEMORY_BARRIER ();
clib_memcpy (&result, vlib_buffer_get_current (b),
- sizeof (struct virtio_ctrl_msg));
- virtio_log_debug (vim, vif, "ctrl-queue: status %u", result.status);
+ sizeof (virtio_ctrl_msg_t));
+ virtio_log_debug (vif, "ctrl-queue: status %u", result.status);
status = result.status;
vlib_buffer_free (vm, &buffer_index, 1);
return status;
}
+static int
+virtio_pci_send_ctrl_msg (vlib_main_t * vm, virtio_if_t * vif,
+ virtio_ctrl_msg_t * data, u32 len)
+{
+ if (vif->is_packed)
+ return virtio_pci_send_ctrl_msg_packed (vm, vif, data, len);
+ else
+ return virtio_pci_send_ctrl_msg_split (vm, vif, data, len);
+}
+
+static int
+virtio_pci_disable_offload (vlib_main_t * vm, virtio_if_t * vif)
+{
+ virtio_ctrl_msg_t offload_hdr;
+ virtio_net_ctrl_ack_t status = VIRTIO_NET_ERR;
+
+ offload_hdr.ctrl.class = VIRTIO_NET_CTRL_GUEST_OFFLOADS;
+ offload_hdr.ctrl.cmd = VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET;
+ offload_hdr.status = VIRTIO_NET_ERR;
+ u64 offloads = 0ULL;
+ clib_memcpy (offload_hdr.data, &offloads, sizeof (offloads));
+
+ status =
+ virtio_pci_send_ctrl_msg (vm, vif, &offload_hdr, sizeof (offloads));
+ virtio_log_debug (vif, "disable offloads");
+ vif->remote_features = vif->virtio_pci_func->get_device_features (vm, vif);
+ vif->virtio_pci_func->get_driver_features (vm, vif);
+ return status;
+}
+
+static int
+virtio_pci_enable_checksum_offload (vlib_main_t * vm, virtio_if_t * vif)
+{
+ virtio_ctrl_msg_t csum_offload_hdr;
+ virtio_net_ctrl_ack_t status = VIRTIO_NET_ERR;
+
+ csum_offload_hdr.ctrl.class = VIRTIO_NET_CTRL_GUEST_OFFLOADS;
+ csum_offload_hdr.ctrl.cmd = VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET;
+ csum_offload_hdr.status = VIRTIO_NET_ERR;
+ u64 offloads = 0ULL;
+ offloads |= VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_CSUM);
+ clib_memcpy (csum_offload_hdr.data, &offloads, sizeof (offloads));
+
+ status =
+ virtio_pci_send_ctrl_msg (vm, vif, &csum_offload_hdr, sizeof (offloads));
+ virtio_log_debug (vif, "enable checksum offload");
+ vif->remote_features = vif->virtio_pci_func->get_device_features (vm, vif);
+ vif->features = vif->virtio_pci_func->get_driver_features (vm, vif);
+ return status;
+}
+
+static int
+virtio_pci_enable_gso (vlib_main_t * vm, virtio_if_t * vif)
+{
+ virtio_ctrl_msg_t gso_hdr;
+ virtio_net_ctrl_ack_t status = VIRTIO_NET_ERR;
+
+ gso_hdr.ctrl.class = VIRTIO_NET_CTRL_GUEST_OFFLOADS;
+ gso_hdr.ctrl.cmd = VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET;
+ gso_hdr.status = VIRTIO_NET_ERR;
+ u64 offloads = VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_CSUM)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_TSO4)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_TSO6);
+ clib_memcpy (gso_hdr.data, &offloads, sizeof (offloads));
+
+ status = virtio_pci_send_ctrl_msg (vm, vif, &gso_hdr, sizeof (offloads));
+ virtio_log_debug (vif, "enable gso");
+ vif->remote_features = vif->virtio_pci_func->get_device_features (vm, vif);
+ vif->virtio_pci_func->get_driver_features (vm, vif);
+ return status;
+}
+
+static int
+virtio_pci_offloads (vlib_main_t * vm, virtio_if_t * vif, int gso_enabled,
+ int csum_offload_enabled)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, vif->hw_if_index);
+
+ if ((vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ)) &&
+ (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)))
+ {
+ if (gso_enabled
+ && (vif->features & (VIRTIO_FEATURE (VIRTIO_NET_F_HOST_TSO4) |
+ VIRTIO_FEATURE (VIRTIO_NET_F_HOST_TSO6))))
+ {
+ if (virtio_pci_enable_gso (vm, vif))
+ {
+ virtio_log_warning (vif, "gso is not enabled");
+ }
+ else
+ {
+ vif->gso_enabled = 1;
+ vif->csum_offload_enabled = 0;
+ hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
+ VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+ }
+ }
+ else if (csum_offload_enabled
+ && (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_CSUM)))
+ {
+ if (virtio_pci_enable_checksum_offload (vm, vif))
+ {
+ virtio_log_warning (vif, "checksum offload is not enabled");
+ }
+ else
+ {
+ vif->csum_offload_enabled = 1;
+ vif->gso_enabled = 0;
+ hw->flags &= ~VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO;
+ hw->flags |=
+ VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+ }
+ }
+ else
+ {
+ if (virtio_pci_disable_offload (vm, vif))
+ {
+ virtio_log_warning (vif, "offloads are not disabled");
+ }
+ else
+ {
+ vif->csum_offload_enabled = 0;
+ vif->gso_enabled = 0;
+ hw->flags &= ~(VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
+ VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD);
+ }
+ }
+ }
+
+ return 0;
+}
+
static int
virtio_pci_enable_multiqueue (vlib_main_t * vm, virtio_if_t * vif,
u16 num_queues)
{
- virtio_main_t *vim = &virtio_main;
- struct virtio_ctrl_msg mq_hdr;
- virtio_net_ctrl_ack status = VIRTIO_NET_ERR;
+ virtio_ctrl_msg_t mq_hdr;
+ virtio_net_ctrl_ack_t status = VIRTIO_NET_ERR;
mq_hdr.ctrl.class = VIRTIO_NET_CTRL_MQ;
mq_hdr.ctrl.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
clib_memcpy (mq_hdr.data, &num_queues, sizeof (num_queues));
status = virtio_pci_send_ctrl_msg (vm, vif, &mq_hdr, sizeof (num_queues));
- virtio_log_debug (vim, vif, "multi-queue enable %u queues", num_queues);
+ virtio_log_debug (vif, "multi-queue enable %u queues", num_queues);
return status;
}
}
clib_error_t *
-virtio_pci_control_vring_init (vlib_main_t * vm, virtio_if_t * vif,
- u16 queue_num)
+virtio_pci_control_vring_packed_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 = NULL;
- queue_size = virtio_pci_legacy_get_queue_num (vm, vif, queue_num);
+ queue_size = vif->virtio_pci_func->get_queue_size (vm, vif, queue_num);
+
+ if (queue_size > 32768)
+ return clib_error_return (0, "ring size must be 32768 or lower");
+
+ if (queue_size == 0)
+ queue_size = 256;
+
+ vec_validate_aligned (vif->cxq_vring, 0, CLIB_CACHE_LINE_BYTES);
+ vring = vec_elt_at_index (vif->cxq_vring, 0);
+
+ i =
+ (((queue_size * sizeof (vring_packed_desc_t)) +
+ sizeof (vring_desc_event_t) + VIRTIO_PCI_VRING_ALIGN -
+ 1) & ~(VIRTIO_PCI_VRING_ALIGN - 1)) + sizeof (vring_desc_event_t);
+
+ 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->packed_desc = ptr;
+
+ vring->driver_event = ptr + (queue_size * sizeof (vring_packed_desc_t));
+ vring->driver_event->off_wrap = 0;
+ vring->driver_event->flags = VRING_EVENT_F_DISABLE;
+
+ vring->device_event =
+ ptr +
+ (((queue_size * sizeof (vring_packed_desc_t)) +
+ sizeof (vring_desc_event_t) + VIRTIO_PCI_VRING_ALIGN -
+ 1) & ~(VIRTIO_PCI_VRING_ALIGN - 1));
+ vring->device_event->off_wrap = 0;
+ vring->device_event->flags = 0;
+
+ vring->queue_id = queue_num;
+ vring->size = queue_size;
+ vring->avail_wrap_counter = 1;
+ vring->used_wrap_counter = 1;
+
+ ASSERT (vring->buffers == 0);
+
+ virtio_log_debug (vif, "control-queue: number %u, size %u", queue_num,
+ queue_size);
+ vif->virtio_pci_func->setup_queue (vm, vif, queue_num, (void *) vring);
+ vring->queue_notify_offset =
+ vif->notify_off_multiplier *
+ vif->virtio_pci_func->get_queue_notify_off (vm, vif, queue_num);
+ virtio_log_debug (vif, "queue-notify-offset: number %u, offset %u",
+ queue_num, vring->queue_notify_offset);
+ return error;
+}
+
+clib_error_t *
+virtio_pci_control_vring_split_init (vlib_main_t * vm, virtio_if_t * vif,
+ u16 queue_num)
+{
+ clib_error_t *error = 0;
+ u16 queue_size = 0;
+ virtio_vring_t *vring;
+ vring_t vr;
+ u32 i = 0;
+ void *ptr = NULL;
+
+ queue_size = vif->virtio_pci_func->get_queue_size (vm, vif, queue_num);
if (!virtio_pci_queue_size_valid (queue_size))
clib_warning ("queue size is not valid");
ASSERT (vring->buffers == 0);
vring->size = queue_size;
- virtio_log_debug (vim, vif, "control-queue: number %u, size %u", queue_num,
+ virtio_log_debug (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;
+ vif->virtio_pci_func->setup_queue (vm, vif, queue_num, ptr);
+ vring->queue_notify_offset =
+ vif->notify_off_multiplier *
+ vif->virtio_pci_func->get_queue_notify_off (vm, vif, queue_num);
+ virtio_log_debug (vif, "queue-notify-offset: number %u, offset %u",
+ queue_num, vring->queue_notify_offset);
return error;
}
clib_error_t *
-virtio_pci_vring_init (vlib_main_t * vm, virtio_if_t * vif, u16 queue_num)
+virtio_pci_control_vring_init (vlib_main_t * vm, virtio_if_t * vif,
+ u16 queue_num)
+{
+ if (vif->is_packed)
+ return virtio_pci_control_vring_packed_init (vm, vif, queue_num);
+ else
+ return virtio_pci_control_vring_split_init (vm, vif, queue_num);
+}
+
+clib_error_t *
+virtio_pci_vring_split_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 ();
+ clib_error_t *error = 0;
u16 queue_size = 0;
virtio_vring_t *vring;
- struct vring vr;
+ vring_t vr;
u32 i = 0;
void *ptr = NULL;
- queue_size = virtio_pci_legacy_get_queue_num (vm, vif, queue_num);
+ queue_size = vif->virtio_pci_func->get_queue_size (vm, vif, queue_num);
if (!virtio_pci_queue_size_valid (queue_size))
clib_warning ("queue size is not valid");
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);
+ if (vif->max_queue_pairs < vtm->n_vlib_mains)
+ clib_spinlock_init (&vring->lockp);
}
else
{
vring->used = vr.used;
vring->queue_id = queue_num;
vring->avail->flags = VIRTIO_RING_FLAG_MASK_INT;
+ vring->flow_table = 0;
ASSERT (vring->buffers == 0);
vec_validate_aligned (vring->buffers, queue_size, CLIB_CACHE_LINE_BYTES);
- ASSERT (vring->indirect_buffers == 0);
- vec_validate_aligned (vring->indirect_buffers, queue_size,
- CLIB_CACHE_LINE_BYTES);
if (queue_num % 2)
{
- u32 n_alloc = 0;
- do
- {
- if (n_alloc < queue_size)
- n_alloc +=
- vlib_buffer_alloc (vm, vring->indirect_buffers + n_alloc,
- queue_size - n_alloc);
- }
- while (n_alloc != queue_size);
- virtio_log_debug (vim, vif, "tx-queue: number %u, size %u", queue_num,
+ virtio_log_debug (vif, "tx-queue: number %u, size %u", queue_num,
queue_size);
+ clib_memset_u32 (vring->buffers, ~0, queue_size);
}
else
{
- virtio_log_debug (vim, vif, "rx-queue: number %u, size %u", queue_num,
+ virtio_log_debug (vif, "rx-queue: number %u, size %u", queue_num,
queue_size);
}
vring->size = queue_size;
- if (virtio_pci_legacy_setup_queue (vm, vif, queue_num, ptr))
+ if (vif->virtio_pci_func->setup_queue (vm, vif, queue_num, ptr))
return clib_error_return (0, "error in queue address setup");
- vring->kick_fd = -1;
+ vring->queue_notify_offset =
+ vif->notify_off_multiplier *
+ vif->virtio_pci_func->get_queue_notify_off (vm, vif, queue_num);
+ virtio_log_debug (vif, "queue-notify-offset: number %u, offset %u",
+ queue_num, vring->queue_notify_offset);
return error;
}
+clib_error_t *
+virtio_pci_vring_packed_init (vlib_main_t * vm, virtio_if_t * vif,
+ u16 queue_num)
+{
+ vlib_thread_main_t *vtm = vlib_get_thread_main ();
+ clib_error_t *error = 0;
+ u16 queue_size = 0;
+ virtio_vring_t *vring;
+ u32 i = 0;
+ void *ptr = NULL;
+
+ queue_size = vif->virtio_pci_func->get_queue_size (vm, vif, queue_num);
+
+ 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)
+ {
+ 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));
+ if (vif->max_queue_pairs < vtm->n_vlib_mains)
+ 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 =
+ (((queue_size * sizeof (vring_packed_desc_t)) +
+ sizeof (vring_desc_event_t) + VIRTIO_PCI_VRING_ALIGN -
+ 1) & ~(VIRTIO_PCI_VRING_ALIGN - 1)) + sizeof (vring_desc_event_t);
+
+ 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->packed_desc = ptr;
+
+ vring->driver_event = ptr + (queue_size * sizeof (vring_packed_desc_t));
+ vring->driver_event->off_wrap = 0;
+ vring->driver_event->flags = VRING_EVENT_F_DISABLE;
+
+ vring->device_event =
+ ptr +
+ (((queue_size * sizeof (vring_packed_desc_t)) +
+ sizeof (vring_desc_event_t) + VIRTIO_PCI_VRING_ALIGN -
+ 1) & ~(VIRTIO_PCI_VRING_ALIGN - 1));
+ vring->device_event->off_wrap = 0;
+ vring->device_event->flags = 0;
+
+ vring->queue_id = queue_num;
+
+ vring->avail_wrap_counter = 1;
+ vring->used_wrap_counter = 1;
+
+ ASSERT (vring->buffers == 0);
+ vec_validate_aligned (vring->buffers, queue_size, CLIB_CACHE_LINE_BYTES);
+ if (queue_num % 2)
+ {
+ virtio_log_debug (vif, "tx-queue: number %u, size %u", queue_num,
+ queue_size);
+ clib_memset_u32 (vring->buffers, ~0, queue_size);
+ }
+ else
+ {
+ virtio_log_debug (vif, "rx-queue: number %u, size %u", queue_num,
+ queue_size);
+ }
+ vring->size = queue_size;
+ if (vif->virtio_pci_func->setup_queue (vm, vif, queue_num, (void *) vring))
+ return clib_error_return (0, "error in queue address setup");
+
+ vring->queue_notify_offset =
+ vif->notify_off_multiplier *
+ vif->virtio_pci_func->get_queue_notify_off (vm, vif, queue_num);
+ virtio_log_debug (vif, "queue-notify-offset: number %u, offset %u",
+ queue_num, vring->queue_notify_offset);
+
+ return error;
+}
+
+clib_error_t *
+virtio_pci_vring_init (vlib_main_t * vm, virtio_if_t * vif, u16 queue_num)
+{
+ if (vif->is_packed)
+ return virtio_pci_vring_packed_init (vm, vif, queue_num);
+ else
+ return virtio_pci_vring_split_init (vm, vif, queue_num);
+}
+
static void
virtio_negotiate_features (vlib_main_t * vm, virtio_if_t * vif,
u64 req_features)
* if features are not requested
* default: all supported features
*/
- u64 supported_features = VIRTIO_FEATURE (VIRTIO_NET_F_MTU)
+ u64 supported_features = VIRTIO_FEATURE (VIRTIO_NET_F_CSUM)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_CSUM)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_MTU)
| VIRTIO_FEATURE (VIRTIO_NET_F_MAC)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_GSO)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_TSO4)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_TSO6)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_GUEST_UFO)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_HOST_TSO4)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_HOST_TSO6)
+ | VIRTIO_FEATURE (VIRTIO_NET_F_HOST_UFO)
| VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF)
| VIRTIO_FEATURE (VIRTIO_NET_F_STATUS)
| VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ)
| VIRTIO_FEATURE (VIRTIO_F_ANY_LAYOUT)
| VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC);
+ if (vif->is_modern)
+ supported_features |= VIRTIO_FEATURE (VIRTIO_F_VERSION_1);
+
+ if (vif->is_packed)
+ {
+ supported_features |=
+ (VIRTIO_FEATURE (VIRTIO_F_RING_PACKED) |
+ VIRTIO_FEATURE (VIRTIO_F_IN_ORDER));
+ }
+
if (req_features == 0)
{
req_features = supported_features;
if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MTU))
{
- virtio_net_config_t config;
- virtio_pci_legacy_read_config (vm, vif, &config.mtu,
- sizeof (config.mtu),
- STRUCT_OFFSET_OF (virtio_net_config_t,
- mtu));
- if (config.mtu < 64)
+ u16 mtu = 0;
+ mtu = vif->virtio_pci_func->get_mtu (vm, vif);
+
+ if (mtu < 64)
vif->features &= ~VIRTIO_FEATURE (VIRTIO_NET_F_MTU);
}
- vif->features = virtio_pci_legacy_set_features (vm, vif, vif->features);
+ if ((vif->features & (VIRTIO_FEATURE (VIRTIO_F_RING_PACKED))) == 0)
+ vif->is_packed = 0;
+
+ vif->virtio_pci_func->set_driver_features (vm, vif, vif->features);
+ vif->features = vif->virtio_pci_func->get_driver_features (vm, vif);
}
void
virtio_pci_read_device_feature (vlib_main_t * vm, virtio_if_t * vif)
{
- vif->remote_features = virtio_pci_legacy_get_features (vm, vif);
+ vif->remote_features = vif->virtio_pci_func->get_device_features (vm, vif);
}
int
/*
* Reset the device
*/
- status = virtio_pci_legacy_reset (vm, vif);
+ status = vif->virtio_pci_func->device_reset (vm, vif);
/*
* Set the Acknowledge status bit
*/
- virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_ACK);
+ vif->virtio_pci_func->set_status (vm, vif, VIRTIO_CONFIG_STATUS_ACK);
/*
* Set the Driver status bit
*/
- virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_DRIVER);
+ vif->virtio_pci_func->set_status (vm, vif, VIRTIO_CONFIG_STATUS_DRIVER);
/*
* Read the status and verify it
*/
- status = virtio_pci_legacy_get_status (vm, vif);
- if (!
- ((status & VIRTIO_CONFIG_STATUS_ACK)
- && (status & VIRTIO_CONFIG_STATUS_DRIVER)))
+ status = vif->virtio_pci_func->get_status (vm, vif);
+ if ((status & VIRTIO_CONFIG_STATUS_ACK)
+ && (status & VIRTIO_CONFIG_STATUS_DRIVER))
+ vif->status = status;
+ else
return -1;
- vif->status = status;
return 0;
}
clib_error_t *
-virtio_pci_read_caps (vlib_main_t * vm, virtio_if_t * vif)
+virtio_pci_read_caps (vlib_main_t * vm, virtio_if_t * vif, void **bar)
{
clib_error_t *error = 0;
- virtio_main_t *vim = &virtio_main;
- struct virtio_pci_cap cap;
- u8 pos, common_cfg = 0, notify_base = 0, dev_cfg = 0, isr = 0, pci_cfg = 0;
+ virtio_pci_cap_t cap;
+ u8 pos, common_cfg = 0, notify = 0, dev_cfg = 0, isr = 0, pci_cfg = 0;
vlib_pci_dev_handle_t h = vif->pci_dev_handle;
if ((error = vlib_pci_read_config_u8 (vm, h, PCI_CAPABILITY_LIST, &pos)))
{
- virtio_log_error (vim, vif, "error in reading capabilty list position");
- clib_error_return (error, "error in reading capabilty list position");
+ virtio_log_error (vif, "error in reading capabilty list position");
+ return clib_error_return (error,
+ "error in reading capabilty list position");
}
while (pos)
{
vlib_pci_read_write_config (vm, h, VLIB_READ, pos, &cap,
sizeof (cap))))
{
- virtio_log_error (vim, vif, "%s [%2x]",
+ virtio_log_error (vif, "%s [%2x]",
"error in reading the capability at", pos);
- clib_error_return (error,
- "error in reading the capability at [%2x]", pos);
+ return clib_error_return (error,
+ "error in reading the capability at [%2x]",
+ pos);
}
if (cap.cap_vndr == PCI_CAP_ID_MSIX)
if ((error =
vlib_pci_read_write_config (vm, h, VLIB_READ, pos + 2, &flags,
sizeof (flags))))
- clib_error_return (error,
- "error in reading the capability at [%2x]",
- pos + 2);
+ return clib_error_return (error,
+ "error in reading the capability at [%2x]",
+ pos + 2);
table_size = flags & table_size_mask;
- virtio_log_debug (vim, vif, "flags:0x%x %s 0x%x", flags,
+ virtio_log_debug (vif, "flags:0x%x %s 0x%x", flags,
"msix interrupt vector table-size", table_size);
if (flags & PCI_MSIX_ENABLE)
{
- virtio_log_debug (vim, vif, "msix interrupt enabled");
+ virtio_log_debug (vif, "msix interrupt enabled");
vif->msix_enabled = VIRTIO_MSIX_ENABLED;
+ vif->msix_table_size = table_size;
}
else
{
- virtio_log_debug (vim, vif, "msix interrupt disabled");
+ virtio_log_debug (vif, "msix interrupt disabled");
vif->msix_enabled = VIRTIO_MSIX_DISABLED;
+ vif->msix_table_size = 0;
}
}
if (cap.cap_vndr != PCI_CAP_ID_VNDR)
{
- virtio_log_debug (vim, vif, "[%2x] %s %2x ", pos,
+ virtio_log_debug (vif, "[%2x] %s %2x ", pos,
"skipping non VNDR cap id:", cap.cap_vndr);
goto next;
}
- virtio_log_debug (vim, vif,
+ virtio_log_debug (vif,
"[%4x] cfg type: %u, bar: %u, offset: %04x, len: %u",
pos, cap.cfg_type, cap.bar, cap.offset, cap.length);
+
+ if (cap.bar >= 0 && cap.bar <= 5)
+ {
+ vif->bar = bar[cap.bar];
+ vif->bar_id = cap.bar;
+ }
+ else
+ return clib_error_return (error, "invalid bar %u", cap.bar);
+
switch (cap.cfg_type)
{
case VIRTIO_PCI_CAP_COMMON_CFG:
+ vif->common_offset = cap.offset;
common_cfg = 1;
break;
case VIRTIO_PCI_CAP_NOTIFY_CFG:
- notify_base = 1;
+ if ((error =
+ vlib_pci_read_write_config (vm, h, VLIB_READ,
+ pos + sizeof (cap),
+ &vif->notify_off_multiplier,
+ sizeof
+ (vif->notify_off_multiplier))))
+ {
+ virtio_log_error (vif, "notify off multiplier is not given");
+ }
+ else
+ {
+ virtio_log_debug (vif, "notify off multiplier is %u",
+ vif->notify_off_multiplier);
+ vif->notify_offset = cap.offset;
+ notify = 1;
+ }
break;
case VIRTIO_PCI_CAP_DEVICE_CFG:
+ vif->device_offset = cap.offset;
dev_cfg = 1;
break;
case VIRTIO_PCI_CAP_ISR_CFG:
+ vif->isr_offset = cap.offset;
isr = 1;
break;
case VIRTIO_PCI_CAP_PCI_CFG:
pos = cap.cap_next;
}
- if (common_cfg == 0 || notify_base == 0 || dev_cfg == 0 || isr == 0)
+ if (common_cfg == 0 || notify == 0 || dev_cfg == 0 || isr == 0)
{
- virtio_log_debug (vim, vif, "legacy virtio pci device found");
+ vif->virtio_pci_func = &virtio_pci_legacy_func;
+ vif->notify_off_multiplier = 0;
+ virtio_log_debug (vif, "legacy virtio pci device found");
return error;
}
+ vif->is_modern = 1;
+ vif->virtio_pci_func = &virtio_pci_modern_func;
+
if (!pci_cfg)
- clib_error_return (error, "modern virtio pci device found");
+ {
+ virtio_log_debug (vif, "modern virtio pci device found");
+ }
+ else
+ {
+ virtio_log_debug (vif, "transitional virtio pci device found");
+ }
- virtio_log_debug (vim, vif, "transitional virtio pci device found");
return error;
}
static clib_error_t *
virtio_pci_device_init (vlib_main_t * vm, virtio_if_t * vif,
- virtio_pci_create_if_args_t * args)
+ virtio_pci_create_if_args_t * args, void **bar)
{
clib_error_t *error = 0;
- virtio_main_t *vim = &virtio_main;
+ vlib_thread_main_t *vtm = vlib_get_thread_main ();
u8 status = 0;
- if ((error = virtio_pci_read_caps (vm, vif)))
- clib_error_return (error, "Device is not supported");
+ if ((error = virtio_pci_read_caps (vm, vif, bar)))
+ {
+ args->rv = VNET_API_ERROR_UNSUPPORTED;
+ virtio_log_error (vif, "Device is not supported");
+ return clib_error_return (error, "Device is not supported");
+ }
if (virtio_pci_reset_device (vm, vif) < 0)
{
- virtio_log_error (vim, vif, "Failed to reset the device");
- clib_error_return (error, "Failed to reset the device");
+ args->rv = VNET_API_ERROR_INIT_FAILED;
+ virtio_log_error (vif, "Failed to reset the device");
+ return clib_error_return (error, "Failed to reset the device");
}
/*
* read device features and negotiate (user) requested features
*/
virtio_pci_read_device_feature (vm, vif);
+ if ((vif->remote_features & VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC)) ==
+ 0)
+ {
+ virtio_log_warning (vif, "error encountered: vhost-net backend doesn't "
+ "support VIRTIO_RING_F_INDIRECT_DESC features");
+ }
+ if ((vif->remote_features & VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF)) == 0)
+ {
+ virtio_log_warning (vif, "error encountered: vhost-net backend doesn't "
+ "support VIRTIO_NET_F_MRG_RXBUF features");
+ }
virtio_negotiate_features (vm, vif, args->features);
/*
* After FEATURE_OK, driver should not accept new feature bits
*/
- virtio_pci_legacy_set_status (vm, vif, VIRTIO_CONFIG_STATUS_FEATURES_OK);
- status = virtio_pci_legacy_get_status (vm, vif);
+ vif->virtio_pci_func->set_status (vm, vif,
+ VIRTIO_CONFIG_STATUS_FEATURES_OK);
+ status = vif->virtio_pci_func->get_status (vm, vif);
if (!(status & VIRTIO_CONFIG_STATUS_FEATURES_OK))
{
- virtio_log_error (vim, vif,
+ args->rv = VNET_API_ERROR_UNSUPPORTED;
+ virtio_log_error (vif,
"error encountered: Device doesn't support requested features");
- clib_error_return (error, "Device doesn't support requested features");
+ return clib_error_return (error,
+ "Device doesn't support requested features");
}
vif->status = status;
* Initialize the virtqueues
*/
if ((error = virtio_pci_get_max_virtqueue_pairs (vm, vif)))
- goto err;
+ {
+ args->rv = VNET_API_ERROR_EXCEEDED_NUMBER_OF_RANGES_CAPACITY;
+ goto err;
+ }
+
+ if (vif->msix_enabled == VIRTIO_MSIX_ENABLED)
+ {
+ if (vif->msix_table_size <= vif->max_queue_pairs)
+ {
+ virtio_log_error (vif,
+ "error MSIX lines (%u) <= Number of RXQs (%u)",
+ vif->msix_table_size, vif->max_queue_pairs);
+ return clib_error_return (error,
+ "error MSIX lines (%u) <= Number of RXQs (%u)",
+ vif->msix_table_size,
+ vif->max_queue_pairs);
+ }
+ }
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");
+ args->rv = VNET_API_ERROR_INIT_FAILED;
+ virtio_log_error (vif, "%s (%u) %s", "error in rxq-queue",
+ RX_QUEUE (i), "initialization");
+ error =
+ clib_error_return (error, "%s (%u) %s", "error in rxq-queue",
+ RX_QUEUE (i), "initialization");
+ goto err;
}
else
{
vif->num_rxqs++;
}
+ if (i >= vtm->n_vlib_mains)
+ {
+ /*
+ * There is 1:1 mapping between tx queue and vpp worker thread.
+ * tx queue 0 is bind with thread index 0, tx queue 1 on thread
+ * index 1 and so on.
+ * Multiple worker threads can poll same tx queue when number of
+ * workers are more than tx queues. In this case, 1:N mapping
+ * between tx queue and vpp worker thread.
+ */
+ virtio_log_debug (vif, "%s %u, %s", "tx-queue: number",
+ TX_QUEUE (i),
+ "no VPP worker thread is available");
+ continue;
+ }
+
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");
+ args->rv = VNET_API_ERROR_INIT_FAILED;
+ virtio_log_error (vif, "%s (%u) %s", "error in txq-queue",
+ TX_QUEUE (i), "initialization");
+ error =
+ clib_error_return (error, "%s (%u) %s", "error in txq-queue",
+ TX_QUEUE (i), "initialization");
+ goto err;
}
else
{
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",
+ virtio_log_warning (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");
+ virtio_log_debug (vif, "control queue is not available");
vif->cxq_vring = NULL;
}
*/
if (vif->msix_enabled == VIRTIO_MSIX_ENABLED)
{
- if (virtio_pci_legacy_set_config_irq (vm, vif, 1) ==
+ int i, j;
+ if (vif->virtio_pci_func->set_config_irq (vm, vif, 0) ==
VIRTIO_MSI_NO_VECTOR)
- virtio_log_warning (vim, vif, "config vector 1 is not set");
- if (virtio_pci_legacy_set_queue_irq (vm, vif, 0, 0) ==
- VIRTIO_MSI_NO_VECTOR)
- virtio_log_warning (vim, vif, "queue vector 0 is not set");
+ {
+ virtio_log_warning (vif, "config vector 0 is not set");
+ }
+ else
+ {
+ virtio_log_debug (vif, "config msix vector is set at 0");
+ }
+ for (i = 0, j = 1; i < vif->max_queue_pairs; i++, j++)
+ {
+ if (vif->virtio_pci_func->set_queue_irq (vm, vif, j,
+ RX_QUEUE (i)) ==
+ VIRTIO_MSI_NO_VECTOR)
+ {
+ virtio_log_warning (vif, "queue (%u) vector is not set at %u",
+ RX_QUEUE (i), j);
+ }
+ else
+ {
+ virtio_log_debug (vif, "%s (%u) %s %u", "queue",
+ RX_QUEUE (i), "msix vector is set at", j);
+ }
+ }
}
/*
* 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);
+ vif->virtio_pci_func->set_status (vm, vif, VIRTIO_CONFIG_STATUS_DRIVER_OK);
+ vif->status = vif->virtio_pci_func->get_status (vm, vif);
err:
return error;
}
virtio_if_t *vif;
vlib_pci_dev_handle_t h;
clib_error_t *error = 0;
+ u32 interrupt_count = 0;
/* *INDENT-OFF* */
pool_foreach (vif, vim->interfaces, ({
if (vif->pci_addr.as_u32 == args->addr)
{
- args->rv = VNET_API_ERROR_INVALID_VALUE;
+ args->rv = VNET_API_ERROR_ADDRESS_IN_USE;
args->error =
clib_error_return (error, "PCI address in use");
vlib_log (VLIB_LOG_LEVEL_ERR, vim->log_default, "%U: %s",
vif->dev_instance = vif - vim->interfaces;
vif->per_interface_next_index = ~0;
vif->pci_addr.as_u32 = args->addr;
+ if (args->virtio_flags & VIRTIO_FLAG_PACKED)
+ vif->is_packed = 1;
if ((error =
vlib_pci_device_open (vm, (vlib_pci_addr_t *) & vif->pci_addr,
virtio_pci_device_ids, &h)))
{
- pool_put (vim->interfaces, vif);
args->rv = VNET_API_ERROR_INVALID_INTERFACE;
args->error =
clib_error_return (error, "pci-addr %U", format_vlib_pci_addr,
vlib_log (VLIB_LOG_LEVEL_ERR, vim->log_default, "%U: %s",
format_vlib_pci_addr, &vif->pci_addr,
"error encountered on pci device open");
+ pool_put (vim->interfaces, vif);
return;
}
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);
+ vif->type = VIRTIO_IF_TYPE_PCI;
if ((error = vlib_pci_bus_master_enable (vm, h)))
{
- virtio_log_error (vim, vif,
- "error encountered on pci bus master enable");
+ virtio_log_error (vif, "error encountered on pci bus master enable");
goto error;
}
+ void *bar[6];
+ for (u32 i = 0; i <= 5; i++)
+ {
+
+ if ((error = vlib_pci_map_region (vm, h, i, &bar[i])))
+ {
+ virtio_log_debug (vif, "no pci map region for bar %u", i);
+ }
+ else
+ {
+ virtio_log_debug (vif, "pci map region for bar %u at %p", i,
+ bar[i]);
+ }
+ }
+
if ((error = vlib_pci_io_region (vm, h, 0)))
{
- virtio_log_error (vim, vif, "error encountered on pci io region");
+ virtio_log_error (vif, "error encountered on pci io region");
goto error;
}
- if (vlib_pci_get_num_msix_interrupts (vm, h) > 1)
+ interrupt_count = vlib_pci_get_num_msix_interrupts (vm, h);
+ if (interrupt_count > 1)
{
if ((error = vlib_pci_register_msix_handler (vm, h, 0, 1,
- &virtio_pci_irq_0_handler)))
+ &virtio_pci_irq_config_handler)))
{
- virtio_log_error (vim, vif,
+ args->rv = VNET_API_ERROR_INVALID_REGISTRATION;
+ virtio_log_error (vif,
"error encountered on pci register msix handler 0");
goto error;
}
- if ((error = vlib_pci_register_msix_handler (vm, h, 1, 1,
- &virtio_pci_irq_1_handler)))
+
+ if ((error =
+ vlib_pci_register_msix_handler (vm, h, 1, (interrupt_count - 1),
+ &virtio_pci_irq_queue_handler)))
{
- virtio_log_error (vim, vif,
+ args->rv = VNET_API_ERROR_INVALID_REGISTRATION;
+ virtio_log_error (vif,
"error encountered on pci register msix handler 1");
goto error;
}
- if ((error = vlib_pci_enable_msix_irq (vm, h, 0, 2)))
+ if ((error = vlib_pci_enable_msix_irq (vm, h, 0, interrupt_count)))
{
- virtio_log_error (vim, vif,
- "error encountered on pci enable msix irq");
+ virtio_log_error (vif, "error encountered on pci enable msix irq");
goto error;
}
vif->support_int_mode = 1;
- virtio_log_debug (vim, vif, "device supports msix interrupts");
+ virtio_log_debug (vif, "device supports msix interrupts");
}
- else if (vlib_pci_get_num_msix_interrupts (vm, h) == 1)
+ else if (interrupt_count == 1)
{
/*
* if msix table-size is 1, fall back to intX.
if ((error =
vlib_pci_register_intx_handler (vm, h, &virtio_pci_irq_handler)))
{
- virtio_log_error (vim, vif,
+ virtio_log_error (vif,
"error encountered on pci register interrupt handler");
goto error;
}
vif->support_int_mode = 1;
- virtio_log_debug (vim, vif, "pci register interrupt handler");
+ virtio_log_debug (vif, "pci register interrupt handler");
}
else
{
* Please don't use interrupt mode with UIO driver.
*/
vif->support_int_mode = 0;
- virtio_log_debug (vim, vif, "driver is configured in poll mode only");
+ virtio_log_debug (vif, "driver is configured in poll mode only");
}
if ((error = vlib_pci_intr_enable (vm, h)))
{
- virtio_log_error (vim, vif,
- "error encountered on pci interrupt enable");
+ virtio_log_error (vif, "error encountered on pci interrupt enable");
goto error;
}
- if ((error = virtio_pci_device_init (vm, vif, args)))
+ if ((error = virtio_pci_device_init (vm, vif, args, bar)))
{
- virtio_log_error (vim, vif, "error encountered on device init");
+ virtio_log_error (vif, "error encountered on device init");
goto error;
}
- vif->type = VIRTIO_IF_TYPE_PCI;
/* create interface */
error = ethernet_register_interface (vnm, virtio_device_class.index,
vif->dev_instance, vif->mac_addr,
if (error)
{
- virtio_log_error (vim, vif,
+ args->rv = VNET_API_ERROR_INVALID_REGISTRATION;
+ virtio_log_error (vif,
"error encountered on ethernet register interface");
goto error;
}
vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, vif->hw_if_index);
hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
+
+ if (args->virtio_flags & VIRTIO_FLAG_BUFFERING)
+ {
+ error = virtio_set_packet_buffering (vif, args->buffering_size);
+ if (error)
+ {
+ args->rv = VNET_API_ERROR_INIT_FAILED;
+ virtio_log_error (vif,
+ "error encountered during packet buffering init");
+ goto error;
+ }
+ }
+
vnet_hw_interface_set_input_node (vnm, vif->hw_if_index,
virtio_input_node.index);
u32 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);
+ VNET_HW_IF_RX_MODE_POLLING);
}
if (virtio_pci_is_link_up (vm, vif) & VIRTIO_NET_S_LINK_UP)
{
else
vnet_hw_interface_set_flags (vnm, vif->hw_if_index, 0);
+ virtio_pci_offloads (vm, vif, args->gso_enabled,
+ args->checksum_offload_enabled);
+
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");
+ virtio_log_warning (vif, "multiqueue is not set");
}
return;
error:
virtio_pci_delete_if (vm, vif);
- args->rv = VNET_API_ERROR_INVALID_INTERFACE;
+ if (args->rv == 0)
+ args->rv = VNET_API_ERROR_INVALID_INTERFACE;
args->error = error;
}
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));
+ vif->virtio_pci_func->del_queue (vm, vif, RX_QUEUE (i));
+ vif->virtio_pci_func->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);
+ vif->virtio_pci_func->del_queue (vm, vif, vif->max_queue_pairs * 2);
- virtio_pci_legacy_reset (vm, vif);
+ if (vif->virtio_pci_func)
+ vif->virtio_pci_func->device_reset (vm, vif);
if (vif->hw_if_index)
{
vec_foreach_index (i, vif->rxq_vrings)
{
virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, i);
- if (vring->kick_fd != -1)
- close (vring->kick_fd);
if (vring->used)
{
- virtio_free_rx_buffers (vm, vring);
+ virtio_free_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_buffer_free_no_next (vm, vring->indirect_buffers, vring->size);
+ virtio_free_buffers (vm, vring);
}
vec_free (vring->buffers);
- vec_free (vring->indirect_buffers);
+ gro_flow_table_free (vring->flow_table);
+ virtio_vring_buffering_free (vm, vring->buffering);
+ clib_spinlock_free (&vring->lockp);
vlib_physmem_free (vm, vring->desc);
}
vec_free (vif->txq_vrings);
vec_free (vif->cxq_vring);
- if (vif->fd != -1)
- vif->fd = -1;
- if (vif->tap_fd != -1)
- vif->tap_fd = -1;
clib_error_free (vif->error);
memset (vif, 0, sizeof (*vif));
pool_put (vim->interfaces, vif);
return 0;
}
+int
+virtio_pci_enable_disable_offloads (vlib_main_t * vm, virtio_if_t * vif,
+ int gso_enabled,
+ int checksum_offload_enabled,
+ int offloads_disabled)
+{
+ if (vif->type != VIRTIO_IF_TYPE_PCI)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ if (gso_enabled)
+ virtio_pci_offloads (vm, vif, 1, 0);
+ else if (checksum_offload_enabled)
+ virtio_pci_offloads (vm, vif, 0, 1);
+ else if (offloads_disabled)
+ virtio_pci_offloads (vm, vif, 0, 0);
+
+ return 0;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff