#include <net/if.h>
#include <linux/if_tun.h>
#include <sys/ioctl.h>
-#include <linux/virtio_net.h>
-#include <linux/vhost.h>
#include <sys/eventfd.h>
#include <vlib/vlib.h>
+#include <vlib/pci/pci.h>
#include <vlib/unix/unix.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/devices/virtio/virtio.h>
+#include <vnet/devices/virtio/pci.h>
virtio_main_t virtio_main;
CLIB_UNUSED (ssize_t size) = read (uf->file_descriptor, &b, sizeof (b));
if ((qid & 1) == 0)
- vnet_device_input_set_interrupt_pending (vnm, vif->hw_if_index, qid);
+ vnet_device_input_set_interrupt_pending (vnm, vif->hw_if_index,
+ RX_QUEUE_ACCESS (qid));
return 0;
}
clib_error_t *
virtio_vring_init (vlib_main_t * vm, virtio_if_t * vif, u16 idx, u16 sz)
{
- clib_error_t *err = 0;
virtio_vring_t *vring;
- struct vhost_vring_state state = { 0 };
- struct vhost_vring_addr addr = { 0 };
- struct vhost_vring_file file = { 0 };
clib_file_t t = { 0 };
int i;
if (sz == 0)
sz = 256;
- vec_validate_aligned (vif->vrings, idx, CLIB_CACHE_LINE_BYTES);
- vring = vec_elt_at_index (vif->vrings, idx);
-
- i = sizeof (struct vring_desc) * sz;
+ if (idx % 2)
+ {
+ vlib_thread_main_t *thm = vlib_get_thread_main ();
+ vec_validate_aligned (vif->txq_vrings, TX_QUEUE_ACCESS (idx),
+ CLIB_CACHE_LINE_BYTES);
+ vring = vec_elt_at_index (vif->txq_vrings, TX_QUEUE_ACCESS (idx));
+ if (thm->n_vlib_mains > vif->num_txqs)
+ clib_spinlock_init (&vring->lockp);
+ }
+ else
+ {
+ vec_validate_aligned (vif->rxq_vrings, RX_QUEUE_ACCESS (idx),
+ CLIB_CACHE_LINE_BYTES);
+ vring = vec_elt_at_index (vif->rxq_vrings, RX_QUEUE_ACCESS (idx));
+ }
+ i = sizeof (vring_desc_t) * sz;
i = round_pow2 (i, CLIB_CACHE_LINE_BYTES);
vring->desc = clib_mem_alloc_aligned (i, CLIB_CACHE_LINE_BYTES);
- memset (vring->desc, 0, i);
+ clib_memset (vring->desc, 0, i);
- i = sizeof (struct vring_avail) + sz * sizeof (vring->avail->ring[0]);
+ i = sizeof (vring_avail_t) + sz * sizeof (vring->avail->ring[0]);
i = round_pow2 (i, CLIB_CACHE_LINE_BYTES);
vring->avail = clib_mem_alloc_aligned (i, CLIB_CACHE_LINE_BYTES);
- memset (vring->avail, 0, i);
+ clib_memset (vring->avail, 0, i);
// tell kernel that we don't need interrupt
- vring->avail->flags = VIRTIO_RING_FLAG_MASK_INT;
+ vring->avail->flags = VRING_AVAIL_F_NO_INTERRUPT;
- i = sizeof (struct vring_used) + sz * sizeof (struct vring_used_elem);
+ i = sizeof (vring_used_t) + sz * sizeof (vring_used_elem_t);
i = round_pow2 (i, CLIB_CACHE_LINE_BYTES);
vring->used = clib_mem_alloc_aligned (i, CLIB_CACHE_LINE_BYTES);
- memset (vring->used, 0, i);
+ clib_memset (vring->used, 0, i);
+ vring->queue_id = idx;
ASSERT (vring->buffers == 0);
- vec_validate_aligned (vring->buffers, sz * 2, CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (vring->buffers, sz, CLIB_CACHE_LINE_BYTES);
+
+ if (idx & 1)
+ {
+ clib_memset_u32 (vring->buffers, ~0, sz);
+ }
vring->size = sz;
vring->call_fd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
- vring->kick_fd = eventfd (0, EFD_CLOEXEC);
+ vring->kick_fd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
+ virtio_log_debug (vif, "vring %u size %u call_fd %d kick_fd %d", idx,
+ vring->size, vring->call_fd, vring->kick_fd);
t.read_function = call_read_ready;
t.file_descriptor = vring->call_fd;
t.private_data = vif->dev_instance << 16 | idx;
+ t.description = format (0, "%U vring %u", format_virtio_device_name,
+ vif->dev_instance, idx);
vring->call_file_index = clib_file_add (&file_main, &t);
- state.index = idx;
- state.num = sz;
- _IOCTL (vif->fd, VHOST_SET_VRING_NUM, &state);
-
- addr.index = idx;
- addr.flags = 0;
- addr.desc_user_addr = pointer_to_uword (vring->desc);
- addr.avail_user_addr = pointer_to_uword (vring->avail);
- addr.used_user_addr = pointer_to_uword (vring->used);
- _IOCTL (vif->fd, VHOST_SET_VRING_ADDR, &addr);
-
- file.index = idx;
- file.fd = vring->kick_fd;
- _IOCTL (vif->fd, VHOST_SET_VRING_KICK, &file);
- file.fd = vring->call_fd;
- _IOCTL (vif->fd, VHOST_SET_VRING_CALL, &file);
- file.fd = vif->tap_fd;
- _IOCTL (vif->fd, VHOST_NET_SET_BACKEND, &file);
-
-error:
- return err;
+ return 0;
+}
+
+inline void
+virtio_free_buffers (vlib_main_t * vm, virtio_vring_t * vring)
+{
+ u16 used = vring->desc_in_use;
+ u16 last = vring->last_used_idx;
+ u16 mask = vring->size - 1;
+
+ while (used)
+ {
+ vlib_buffer_free (vm, &vring->buffers[last & mask], 1);
+ last++;
+ used--;
+ }
}
clib_error_t *
-virtio_vring_free (virtio_if_t * vif, u32 idx)
+virtio_vring_free_rx (vlib_main_t * vm, virtio_if_t * vif, u32 idx)
{
- //TODO free buffers and indirect descriptor allocs
- virtio_vring_t *vring = vec_elt_at_index (vif->vrings, idx);
+ virtio_vring_t *vring =
+ vec_elt_at_index (vif->rxq_vrings, RX_QUEUE_ACCESS (idx));
+
+ clib_file_del_by_index (&file_main, vring->call_file_index);
+ close (vring->kick_fd);
+ close (vring->call_fd);
+ if (vring->used)
+ {
+ virtio_free_buffers (vm, vring);
+ clib_mem_free (vring->used);
+ }
if (vring->desc)
clib_mem_free (vring->desc);
if (vring->avail)
clib_mem_free (vring->avail);
- if (vring->used)
- clib_mem_free (vring->used);
+ vec_free (vring->buffers);
+ return 0;
+}
+
+clib_error_t *
+virtio_vring_free_tx (vlib_main_t * vm, virtio_if_t * vif, u32 idx)
+{
+ virtio_vring_t *vring =
+ vec_elt_at_index (vif->txq_vrings, TX_QUEUE_ACCESS (idx));
+
clib_file_del_by_index (&file_main, vring->call_file_index);
close (vring->kick_fd);
close (vring->call_fd);
+ if (vring->used)
+ {
+ virtio_free_buffers (vm, vring);
+ clib_mem_free (vring->used);
+ }
+ if (vring->desc)
+ clib_mem_free (vring->desc);
+ if (vring->avail)
+ clib_mem_free (vring->avail);
vec_free (vring->buffers);
+ gro_flow_table_free (vring->flow_table);
+ virtio_vring_buffering_free (vm, vring->buffering);
+ clib_spinlock_free (&vring->lockp);
return 0;
}
+void
+virtio_set_packet_coalesce (virtio_if_t * vif)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, vif->hw_if_index);
+ virtio_vring_t *vring;
+ vif->packet_coalesce = 1;
+ vec_foreach (vring, vif->txq_vrings)
+ {
+ gro_flow_table_init (&vring->flow_table,
+ vif->type & (VIRTIO_IF_TYPE_TAP |
+ VIRTIO_IF_TYPE_PCI), hw->tx_node_index);
+ }
+}
+
+clib_error_t *
+virtio_set_packet_buffering (virtio_if_t * vif, u16 buffering_size)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, vif->hw_if_index);
+ virtio_vring_t *vring;
+ clib_error_t *error = 0;
+ vif->packet_buffering = 1;
+
+ vec_foreach (vring, vif->txq_vrings)
+ {
+ if ((error =
+ virtio_vring_buffering_init (&vring->buffering, hw->tx_node_index,
+ buffering_size)))
+ {
+ break;
+ }
+ }
+
+ return error;
+}
+
+void
+virtio_vring_set_numa_node (vlib_main_t * vm, virtio_if_t * vif, u32 idx)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ u32 thread_index;
+ virtio_vring_t *vring =
+ vec_elt_at_index (vif->rxq_vrings, RX_QUEUE_ACCESS (idx));
+ thread_index =
+ vnet_get_device_input_thread_index (vnm, vif->hw_if_index,
+ RX_QUEUE_ACCESS (idx));
+ vring->buffer_pool_index =
+ vlib_buffer_pool_get_default_for_numa (vm,
+ vlib_mains
+ [thread_index]->numa_node);
+}
+
+inline void
+virtio_set_net_hdr_size (virtio_if_t * vif)
+{
+ if (vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF) ||
+ vif->features & VIRTIO_FEATURE (VIRTIO_F_VERSION_1))
+ vif->virtio_net_hdr_sz = sizeof (virtio_net_hdr_v1_t);
+ else
+ vif->virtio_net_hdr_sz = sizeof (virtio_net_hdr_t);
+}
+
+inline void
+virtio_show (vlib_main_t * vm, u32 * hw_if_indices, u8 show_descr, u32 type)
+{
+ u32 i, j, hw_if_index;
+ virtio_if_t *vif;
+ vnet_main_t *vnm = &vnet_main;
+ virtio_main_t *mm = &virtio_main;
+ virtio_vring_t *vring;
+ struct feat_struct
+ {
+ u8 bit;
+ char *str;
+ };
+ struct feat_struct *feat_entry;
+
+ static struct feat_struct feat_array[] = {
+#define _(s,b) { .str = #s, .bit = b, },
+ foreach_virtio_net_features
+#undef _
+ {.str = NULL}
+ };
+
+ struct feat_struct *flag_entry;
+ static struct feat_struct flags_array[] = {
+#define _(b,e,s) { .bit = b, .str = s, },
+ foreach_virtio_if_flag
+#undef _
+ {.str = NULL}
+ };
+
+ if (!hw_if_indices)
+ return;
+
+ for (hw_if_index = 0; hw_if_index < vec_len (hw_if_indices); hw_if_index++)
+ {
+ vnet_hw_interface_t *hi =
+ vnet_get_hw_interface (vnm, hw_if_indices[hw_if_index]);
+ vif = pool_elt_at_index (mm->interfaces, hi->dev_instance);
+ if (vif->type != type)
+ continue;
+ vlib_cli_output (vm, "Interface: %U (ifindex %d)",
+ format_vnet_hw_if_index_name, vnm,
+ hw_if_indices[hw_if_index], vif->hw_if_index);
+ if (type == VIRTIO_IF_TYPE_PCI)
+ {
+ vlib_cli_output (vm, " PCI Address: %U", format_vlib_pci_addr,
+ &vif->pci_addr);
+ }
+ if (type & (VIRTIO_IF_TYPE_TAP | VIRTIO_IF_TYPE_TUN))
+ {
+ u8 *str = 0;
+ if (vif->host_if_name)
+ vlib_cli_output (vm, " name \"%s\"", vif->host_if_name);
+ if (vif->net_ns)
+ vlib_cli_output (vm, " host-ns \"%s\"", vif->net_ns);
+ if (vif->host_mtu_size)
+ vlib_cli_output (vm, " host-mtu-size \"%d\"",
+ vif->host_mtu_size);
+ if (type == VIRTIO_IF_TYPE_TAP)
+ vlib_cli_output (vm, " host-mac-addr: %U",
+ format_ethernet_address, vif->host_mac_addr);
+ vlib_cli_output (vm, " host-carrier-up: %u", vif->host_carrier_up);
+
+ vec_foreach_index (i, vif->vhost_fds)
+ str = format (str, " %d", vif->vhost_fds[i]);
+ vlib_cli_output (vm, " vhost-fds%v", str);
+ vec_free (str);
+ vec_foreach_index (i, vif->tap_fds)
+ str = format (str, " %d", vif->tap_fds[i]);
+ vlib_cli_output (vm, " tap-fds%v", str);
+ vec_free (str);
+ }
+ vlib_cli_output (vm, " gso-enabled %d", vif->gso_enabled);
+ vlib_cli_output (vm, " csum-enabled %d", vif->csum_offload_enabled);
+ vlib_cli_output (vm, " packet-coalesce %d", vif->packet_coalesce);
+ vlib_cli_output (vm, " packet-buffering %d", vif->packet_buffering);
+ if (type & (VIRTIO_IF_TYPE_TAP | VIRTIO_IF_TYPE_PCI))
+ vlib_cli_output (vm, " Mac Address: %U", format_ethernet_address,
+ vif->mac_addr);
+ vlib_cli_output (vm, " Device instance: %u", vif->dev_instance);
+ vlib_cli_output (vm, " flags 0x%x", vif->flags);
+ flag_entry = (struct feat_struct *) &flags_array;
+ while (flag_entry->str)
+ {
+ if (vif->flags & (1ULL << flag_entry->bit))
+ vlib_cli_output (vm, " %s (%d)", flag_entry->str,
+ flag_entry->bit);
+ flag_entry++;
+ }
+ if (type == VIRTIO_IF_TYPE_PCI)
+ {
+ device_status (vm, vif);
+ }
+ vlib_cli_output (vm, " features 0x%lx", vif->features);
+ feat_entry = (struct feat_struct *) &feat_array;
+ while (feat_entry->str)
+ {
+ if (vif->features & (1ULL << feat_entry->bit))
+ vlib_cli_output (vm, " %s (%d)", feat_entry->str,
+ feat_entry->bit);
+ feat_entry++;
+ }
+ vlib_cli_output (vm, " remote-features 0x%lx", vif->remote_features);
+ feat_entry = (struct feat_struct *) &feat_array;
+ while (feat_entry->str)
+ {
+ if (vif->remote_features & (1ULL << feat_entry->bit))
+ vlib_cli_output (vm, " %s (%d)", feat_entry->str,
+ feat_entry->bit);
+ feat_entry++;
+ }
+ vlib_cli_output (vm, " Number of RX Virtqueue %u", vif->num_rxqs);
+ vlib_cli_output (vm, " Number of TX Virtqueue %u", vif->num_txqs);
+ if (vif->cxq_vring != NULL
+ && vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ))
+ vlib_cli_output (vm, " Number of CTRL Virtqueue 1");
+ vec_foreach_index (i, vif->rxq_vrings)
+ {
+ vring = vec_elt_at_index (vif->rxq_vrings, i);
+ vlib_cli_output (vm, " Virtqueue (RX) %d", vring->queue_id);
+ vlib_cli_output (vm,
+ " qsz %d, last_used_idx %d, desc_next %d, desc_in_use %d",
+ vring->size, vring->last_used_idx, vring->desc_next,
+ vring->desc_in_use);
+ if (vif->is_packed)
+ {
+ vlib_cli_output (vm,
+ " driver_event.flags 0x%x driver_event.off_wrap %d device_event.flags 0x%x device_event.off_wrap %d",
+ vring->driver_event->flags,
+ vring->driver_event->off_wrap,
+ vring->device_event->flags,
+ vring->device_event->off_wrap);
+ vlib_cli_output (vm,
+ " avail wrap counter %d, used wrap counter %d",
+ vring->avail_wrap_counter,
+ vring->used_wrap_counter);
+ }
+ else
+ vlib_cli_output (vm,
+ " avail.flags 0x%x avail.idx %d used.flags 0x%x used.idx %d",
+ vring->avail->flags, vring->avail->idx,
+ vring->used->flags, vring->used->idx);
+ if (type & (VIRTIO_IF_TYPE_TAP | VIRTIO_IF_TYPE_TUN))
+ {
+ vlib_cli_output (vm, " kickfd %d, callfd %d", vring->kick_fd,
+ vring->call_fd);
+ }
+ if (show_descr)
+ {
+ vlib_cli_output (vm, "\n descriptor table:\n");
+ vlib_cli_output (vm,
+ " id addr len flags next/id user_addr\n");
+ vlib_cli_output (vm,
+ " ===== ================== ===== ====== ======= ==================\n");
+ for (j = 0; j < vring->size; j++)
+ {
+ if (vif->is_packed)
+ {
+ vring_packed_desc_t *desc = &vring->packed_desc[j];
+ vlib_cli_output (vm,
+ " %-5d 0x%016lx %-5d 0x%04x %-8d 0x%016lx\n",
+ j, desc->addr,
+ desc->len,
+ desc->flags, desc->id, desc->addr);
+ }
+ else
+ {
+ vring_desc_t *desc = &vring->desc[j];
+ vlib_cli_output (vm,
+ " %-5d 0x%016lx %-5d 0x%04x %-8d 0x%016lx\n",
+ j, desc->addr,
+ desc->len,
+ desc->flags, desc->next, desc->addr);
+ }
+ }
+ }
+ }
+ vec_foreach_index (i, vif->txq_vrings)
+ {
+ vring = vec_elt_at_index (vif->txq_vrings, i);
+ vlib_cli_output (vm, " Virtqueue (TX) %d", vring->queue_id);
+ vlib_cli_output (vm,
+ " qsz %d, last_used_idx %d, desc_next %d, desc_in_use %d",
+ vring->size, vring->last_used_idx, vring->desc_next,
+ vring->desc_in_use);
+ if (vif->is_packed)
+ {
+ vlib_cli_output (vm,
+ " driver_event.flags 0x%x driver_event.off_wrap %d device_event.flags 0x%x device_event.off_wrap %d",
+ vring->driver_event->flags,
+ vring->driver_event->off_wrap,
+ vring->device_event->flags,
+ vring->device_event->off_wrap);
+ vlib_cli_output (vm,
+ " avail wrap counter %d, used wrap counter %d",
+ vring->avail_wrap_counter,
+ vring->used_wrap_counter);
+ }
+ else
+ vlib_cli_output (vm,
+ " avail.flags 0x%x avail.idx %d used.flags 0x%x used.idx %d",
+ vring->avail->flags, vring->avail->idx,
+ vring->used->flags, vring->used->idx);
+ if (type & (VIRTIO_IF_TYPE_TAP | VIRTIO_IF_TYPE_TUN))
+ {
+ vlib_cli_output (vm, " kickfd %d, callfd %d", vring->kick_fd,
+ vring->call_fd);
+ }
+ if (vring->flow_table)
+ {
+ vlib_cli_output (vm, " %U", gro_flow_table_format,
+ vring->flow_table);
+ }
+ if (vif->packet_buffering)
+ {
+ vlib_cli_output (vm, " %U", virtio_vring_buffering_format,
+ vring->buffering);
+ }
+ if (show_descr)
+ {
+ vlib_cli_output (vm, "\n descriptor table:\n");
+ vlib_cli_output (vm,
+ " id addr len flags next/id user_addr\n");
+ vlib_cli_output (vm,
+ " ===== ================== ===== ====== ======== ==================\n");
+ for (j = 0; j < vring->size; j++)
+ {
+ if (vif->is_packed)
+ {
+ vring_packed_desc_t *desc = &vring->packed_desc[j];
+ vlib_cli_output (vm,
+ " %-5d 0x%016lx %-5d 0x%04x %-8d 0x%016lx\n",
+ j, desc->addr,
+ desc->len,
+ desc->flags, desc->id, desc->addr);
+ }
+ else
+ {
+ vring_desc_t *desc = &vring->desc[j];
+ vlib_cli_output (vm,
+ " %-5d 0x%016lx %-5d 0x%04x %-8d 0x%016lx\n",
+ j, desc->addr,
+ desc->len,
+ desc->flags, desc->next, desc->addr);
+ }
+ }
+ }
+ }
+ if (vif->cxq_vring != NULL
+ && vif->features & VIRTIO_FEATURE (VIRTIO_NET_F_CTRL_VQ))
+ {
+ vring = vif->cxq_vring;
+ vlib_cli_output (vm, " Virtqueue (CTRL) %d", vring->queue_id);
+ vlib_cli_output (vm,
+ " qsz %d, last_used_idx %d, desc_next %d, desc_in_use %d",
+ vring->size, vring->last_used_idx,
+ vring->desc_next, vring->desc_in_use);
+ if (vif->is_packed)
+ {
+ vlib_cli_output (vm,
+ " driver_event.flags 0x%x driver_event.off_wrap %d device_event.flags 0x%x device_event.off_wrap %d",
+ vring->driver_event->flags,
+ vring->driver_event->off_wrap,
+ vring->device_event->flags,
+ vring->device_event->off_wrap);
+ vlib_cli_output (vm,
+ " avail wrap counter %d, used wrap counter %d",
+ vring->avail_wrap_counter,
+ vring->used_wrap_counter);
+ }
+ else
+ {
+ vlib_cli_output (vm,
+ " avail.flags 0x%x avail.idx %d used.flags 0x%x used.idx %d",
+ vring->avail->flags, vring->avail->idx,
+ vring->used->flags, vring->used->idx);
+ }
+ if (type & (VIRTIO_IF_TYPE_TAP | VIRTIO_IF_TYPE_TUN))
+ {
+ vlib_cli_output (vm, " kickfd %d, callfd %d", vring->kick_fd,
+ vring->call_fd);
+ }
+ if (show_descr)
+ {
+ vlib_cli_output (vm, "\n descriptor table:\n");
+ vlib_cli_output (vm,
+ " id addr len flags next/id user_addr\n");
+ vlib_cli_output (vm,
+ " ===== ================== ===== ====== ======== ==================\n");
+ for (j = 0; j < vring->size; j++)
+ {
+ if (vif->is_packed)
+ {
+ vring_packed_desc_t *desc = &vring->packed_desc[j];
+ vlib_cli_output (vm,
+ " %-5d 0x%016lx %-5d 0x%04x %-8d 0x%016lx\n",
+ j, desc->addr,
+ desc->len,
+ desc->flags, desc->id, desc->addr);
+ }
+ else
+ {
+ vring_desc_t *desc = &vring->desc[j];
+ vlib_cli_output (vm,
+ " %-5d 0x%016lx %-5d 0x%04x %-8d 0x%016lx\n",
+ j, desc->addr,
+ desc->len,
+ desc->flags, desc->next, desc->addr);
+ }
+ }
+ }
+ }
+
+ }
+
+}
+
+static clib_error_t *
+virtio_init (vlib_main_t * vm)
+{
+ virtio_main_t *vim = &virtio_main;
+ clib_error_t *error = 0;
+
+ vim->log_default = vlib_log_register_class ("virtio", 0);
+ vlib_log_debug (vim->log_default, "initialized");
+
+ return error;
+}
+
+VLIB_INIT_FUNCTION (virtio_init);
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff