#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
+#include <vnet/vnet.h>
#include <vnet/ethernet/ethernet.h>
+#include <vnet/gso/gro_func.h>
+#include <vnet/gso/hdr_offset_parser.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
+#include <vnet/tcp/tcp_packet.h>
+#include <vnet/udp/udp_packet.h>
#include <vnet/devices/virtio/virtio.h>
#define foreach_virtio_tx_func_error \
_(NO_FREE_SLOTS, "no free tx slots") \
_(TRUNC_PACKET, "packet > buffer size -- truncated in tx ring") \
_(PENDING_MSGS, "pending msgs in tx ring") \
-_(NO_TX_QUEUES, "no tx queues")
+_(INDIRECT_DESC_ALLOC_FAILED, "indirect descriptor allocation failed - packet drop") \
+_(OUT_OF_ORDER, "out-of-order buffers in used ring") \
+_(GSO_PACKET_DROP, "gso disabled on itf -- gso packet drop") \
+_(CSUM_OFFLOAD_PACKET_DROP, "checksum offload disabled on itf -- csum offload packet drop")
typedef enum
{
return s;
}
+typedef struct
+{
+ u32 buffer_index;
+ u32 sw_if_index;
+ vlib_buffer_t buffer;
+ generic_header_offset_t gho;
+} virtio_tx_trace_t;
+
static u8 *
-format_virtio_tx_trace (u8 * s, va_list * args)
+format_virtio_tx_trace (u8 * s, va_list * va)
{
- s = format (s, "Unimplemented...");
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
+ virtio_tx_trace_t *t = va_arg (*va, virtio_tx_trace_t *);
+ u32 indent = format_get_indent (s);
+
+ s = format (s, "%Ubuffer 0x%x: %U\n",
+ format_white_space, indent,
+ t->buffer_index, format_vnet_buffer, &t->buffer);
+ s =
+ format (s, "%U%U\n", format_white_space, indent,
+ format_generic_header_offset, &t->gho);
+ s =
+ format (s, "%U%U", format_white_space, indent,
+ format_ethernet_header_with_length, t->buffer.pre_data,
+ sizeof (t->buffer.pre_data));
return s;
}
static_always_inline void
-virtio_free_used_device_desc (vlib_main_t * vm, virtio_vring_t * vring)
+virtio_tx_trace (vlib_main_t * vm, vlib_node_runtime_t * node,
+ virtio_if_type_t type, vlib_buffer_t * b0, u32 bi)
+{
+ virtio_tx_trace_t *t;
+ t = vlib_add_trace (vm, node, b0, sizeof (t[0]));
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ t->buffer_index = bi;
+ if (type == VIRTIO_IF_TYPE_TUN)
+ {
+ int is_ip4 = 0, is_ip6 = 0;
+
+ switch (((u8 *) vlib_buffer_get_current (b0))[0] & 0xf0)
+ {
+ case 0x40:
+ is_ip4 = 1;
+ break;
+ case 0x60:
+ is_ip6 = 1;
+ break;
+ default:
+ break;
+ }
+ vnet_generic_header_offset_parser (b0, &t->gho, 0, is_ip4, is_ip6);
+ }
+ else
+ vnet_generic_header_offset_parser (b0, &t->gho, 1,
+ b0->flags &
+ VNET_BUFFER_F_IS_IP4,
+ b0->flags & VNET_BUFFER_F_IS_IP6);
+
+ clib_memcpy_fast (&t->buffer, b0, sizeof (*b0) - sizeof (b0->pre_data));
+ clib_memcpy_fast (t->buffer.pre_data, vlib_buffer_get_current (b0),
+ sizeof (t->buffer.pre_data));
+}
+
+static_always_inline void
+virtio_interface_drop_inline (vlib_main_t * vm, uword node_index,
+ u32 * buffers, u16 n,
+ virtio_tx_func_error_t error)
+{
+ vlib_error_count (vm, node_index, error, n);
+ vlib_buffer_free (vm, buffers, n);
+}
+
+static_always_inline void
+virtio_memset_ring_u32 (u32 * ring, u32 start, u32 ring_size, u32 n_buffers)
+{
+ ASSERT (n_buffers <= ring_size);
+
+ if (PREDICT_TRUE (start + n_buffers <= ring_size))
+ {
+ clib_memset_u32 (ring + start, ~0, n_buffers);
+ }
+ else
+ {
+ clib_memset_u32 (ring + start, ~0, ring_size - start);
+ clib_memset_u32 (ring, ~0, n_buffers - (ring_size - start));
+ }
+}
+
+static_always_inline void
+virtio_free_used_device_desc (vlib_main_t * vm, virtio_vring_t * vring,
+ uword node_index)
{
u16 used = vring->desc_in_use;
u16 sz = vring->size;
u16 mask = sz - 1;
u16 last = vring->last_used_idx;
u16 n_left = vring->used->idx - last;
+ u16 out_of_order_count = 0;
if (n_left == 0)
return;
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, n_buffers;
slot = n_buffers = e->id;
- while (e->id == n_buffers)
+ while (e->id == (n_buffers & mask))
{
n_left--;
last++;
n_buffers++;
+ vring_desc_t *d = &vring->desc[e->id];
+ u16 next;
+ while (d->flags & VRING_DESC_F_NEXT)
+ {
+ n_buffers++;
+ next = d->next;
+ d = &vring->desc[next];
+ }
if (n_left == 0)
break;
e = &vring->used->ring[last & mask];
}
vlib_buffer_free_from_ring (vm, vring->buffers, slot,
sz, (n_buffers - slot));
+ virtio_memset_ring_u32 (vring->buffers, slot, sz, (n_buffers - slot));
used -= (n_buffers - slot);
if (n_left > 0)
{
- slot = e->id;
-
- vlib_buffer_free (vm, &vring->buffers[slot], 1);
+ vlib_buffer_free (vm, &vring->buffers[e->id], 1);
+ vring->buffers[e->id] = ~0;
used--;
last++;
n_left--;
+ out_of_order_count++;
+ vring->flags |= VRING_TX_OUT_OF_ORDER;
}
}
+
+ /*
+ * Some vhost-backends give buffers back in out-of-order fashion in used ring.
+ * It impacts the overall virtio-performance.
+ */
+ if (out_of_order_count)
+ vlib_error_count (vm, node_index, VIRTIO_TX_ERROR_OUT_OF_ORDER,
+ out_of_order_count);
+
vring->desc_in_use = used;
vring->last_used_idx = last;
}
+static_always_inline void
+set_checksum_offsets (vlib_buffer_t * b, virtio_net_hdr_v1_t * hdr, int is_l2)
+{
+ if (b->flags & VNET_BUFFER_F_IS_IP4)
+ {
+ ip4_header_t *ip4;
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho, is_l2, 1 /* ip4 */ ,
+ 0 /* ip6 */ );
+ hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
+ hdr->csum_start = gho.l4_hdr_offset; // 0x22;
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
+ {
+ hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
+ }
+ else if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
+ {
+ hdr->csum_offset = STRUCT_OFFSET_OF (udp_header_t, checksum);
+ }
+
+ /*
+ * virtio devices do not support IP4 checksum offload. So driver takes care
+ * of it while doing tx.
+ */
+ ip4 =
+ (ip4_header_t *) (vlib_buffer_get_current (b) + gho.l3_hdr_offset);
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
+ ip4->checksum = ip4_header_checksum (ip4);
+ }
+ else if (b->flags & VNET_BUFFER_F_IS_IP6)
+ {
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho, is_l2, 0 /* ip4 */ ,
+ 1 /* ip6 */ );
+ hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
+ hdr->csum_start = gho.l4_hdr_offset; // 0x36;
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
+ {
+ hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
+ }
+ else if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
+ {
+ hdr->csum_offset = STRUCT_OFFSET_OF (udp_header_t, checksum);
+ }
+ }
+}
+
+static_always_inline void
+set_gso_offsets (vlib_buffer_t * b, virtio_net_hdr_v1_t * hdr, int is_l2)
+{
+ if (b->flags & VNET_BUFFER_F_IS_IP4)
+ {
+ ip4_header_t *ip4;
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho, is_l2, 1 /* ip4 */ ,
+ 0 /* ip6 */ );
+ hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4;
+ hdr->gso_size = vnet_buffer2 (b)->gso_size;
+ hdr->hdr_len = gho.hdr_sz;
+ hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
+ hdr->csum_start = gho.l4_hdr_offset; // 0x22;
+ hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
+ ip4 =
+ (ip4_header_t *) (vlib_buffer_get_current (b) + gho.l3_hdr_offset);
+ /*
+ * virtio devices do not support IP4 checksum offload. So driver takes care
+ * of it while doing tx.
+ */
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
+ ip4->checksum = ip4_header_checksum (ip4);
+ }
+ else if (b->flags & VNET_BUFFER_F_IS_IP6)
+ {
+ generic_header_offset_t gho = { 0 };
+ vnet_generic_header_offset_parser (b, &gho, is_l2, 0 /* ip4 */ ,
+ 1 /* ip6 */ );
+ hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
+ hdr->gso_size = vnet_buffer2 (b)->gso_size;
+ hdr->hdr_len = gho.hdr_sz;
+ hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
+ hdr->csum_start = gho.l4_hdr_offset; // 0x36;
+ hdr->csum_offset = STRUCT_OFFSET_OF (tcp_header_t, checksum);
+ }
+}
+
static_always_inline u16
add_buffer_to_slot (vlib_main_t * vm, virtio_if_t * vif,
- virtio_vring_t * vring, u32 bi, u16 avail, u16 next,
- u16 mask, int do_gso)
+ virtio_if_type_t type, virtio_vring_t * vring,
+ u32 bi, u16 free_desc_count,
+ u16 avail, u16 next, u16 mask, int do_gso,
+ int csum_offload, uword node_index)
{
u16 n_added = 0;
int hdr_sz = vif->virtio_net_hdr_sz;
- struct vring_desc *d;
+ vring_desc_t *d;
d = &vring->desc[next];
vlib_buffer_t *b = vlib_get_buffer (vm, bi);
- struct virtio_net_hdr_v1 *hdr = vlib_buffer_get_current (b) - hdr_sz;
+ virtio_net_hdr_v1_t *hdr = vlib_buffer_get_current (b) - hdr_sz;
+ int is_l2 = (type & (VIRTIO_IF_TYPE_TAP | VIRTIO_IF_TYPE_PCI));
clib_memset (hdr, 0, hdr_sz);
- if (do_gso && (b->flags & VNET_BUFFER_F_GSO))
+
+ if (b->flags & VNET_BUFFER_F_GSO)
{
- if (b->flags & VNET_BUFFER_F_IS_IP4)
+ if (do_gso)
+ set_gso_offsets (b, hdr, is_l2);
+ else
{
- hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4;
- hdr->gso_size = vnet_buffer2 (b)->gso_size;
- hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
- hdr->csum_start = vnet_buffer (b)->l4_hdr_offset; // 0x22;
- hdr->csum_offset = 0x10;
+ virtio_interface_drop_inline (vm, node_index, &bi, 1,
+ VIRTIO_TX_ERROR_GSO_PACKET_DROP);
+ return n_added;
}
+ }
+ else if (b->flags & (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
+ VNET_BUFFER_F_OFFLOAD_UDP_CKSUM))
+ {
+ if (csum_offload)
+ set_checksum_offsets (b, hdr, is_l2);
else
{
- hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
- hdr->gso_size = vnet_buffer2 (b)->gso_size;
- hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
- hdr->csum_start = vnet_buffer (b)->l4_hdr_offset; // 0x36;
- hdr->csum_offset = 0x10;
+ virtio_interface_drop_inline (vm, node_index, &bi, 1,
+ VIRTIO_TX_ERROR_CSUM_OFFLOAD_PACKET_DROP);
+ return n_added;
}
}
if (PREDICT_TRUE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) == 0))
{
d->addr =
- ((vif->type == VIRTIO_IF_TYPE_PCI) ? vlib_buffer_get_current_pa (vm,
- b) :
+ ((type == VIRTIO_IF_TYPE_PCI) ? vlib_buffer_get_current_pa (vm,
+ b) :
pointer_to_uword (vlib_buffer_get_current (b))) - hdr_sz;
d->len = b->current_length + hdr_sz;
d->flags = 0;
}
- else
+ else if (vif->features & VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC))
{
/*
* We are using single vlib_buffer_t for indirect descriptor(s)
*/
u32 indirect_buffer = 0;
if (PREDICT_FALSE (vlib_buffer_alloc (vm, &indirect_buffer, 1) == 0))
- return n_added;
+ {
+ virtio_interface_drop_inline (vm, node_index, &bi, 1,
+ VIRTIO_TX_ERROR_INDIRECT_DESC_ALLOC_FAILED);
+ return n_added;
+ }
vlib_buffer_t *indirect_desc = vlib_get_buffer (vm, indirect_buffer);
indirect_desc->current_data = 0;
indirect_desc->next_buffer = bi;
bi = indirect_buffer;
- struct vring_desc *id =
- (struct vring_desc *) vlib_buffer_get_current (indirect_desc);
+ vring_desc_t *id =
+ (vring_desc_t *) vlib_buffer_get_current (indirect_desc);
u32 count = 1;
- if (vif->type == VIRTIO_IF_TYPE_PCI)
+ if (type == VIRTIO_IF_TYPE_PCI)
{
d->addr = vlib_physmem_get_pa (vm, id);
id->addr = vlib_buffer_get_current_pa (vm, b) - hdr_sz;
id->len = b->current_length;
}
}
- else /* VIRTIO_IF_TYPE_TAP */
+ else /* VIRTIO_IF_TYPE_[TAP | TUN] */
{
d->addr = pointer_to_uword (id);
/* first buffer in chain */
}
id->flags = 0;
id->next = 0;
- d->len = count * sizeof (struct vring_desc);
+ d->len = count * sizeof (vring_desc_t);
d->flags = VRING_DESC_F_INDIRECT;
}
+ else if (type == VIRTIO_IF_TYPE_PCI)
+ {
+ u16 count = next;
+ vlib_buffer_t *b_temp = b;
+ u16 n_buffers_in_chain = 1;
+
+ /*
+ * Check the length of the chain for the required number of
+ * descriptors. Return from here, retry to get more descriptors,
+ * if chain length is greater than available descriptors.
+ */
+ while (b_temp->flags & VLIB_BUFFER_NEXT_PRESENT)
+ {
+ n_buffers_in_chain++;
+ b_temp = vlib_get_buffer (vm, b_temp->next_buffer);
+ }
+
+ if (n_buffers_in_chain > free_desc_count)
+ return n_buffers_in_chain;
+
+ d->addr = vlib_buffer_get_current_pa (vm, b) - hdr_sz;
+ d->len = b->current_length + hdr_sz;
+
+ while (b->flags & VLIB_BUFFER_NEXT_PRESENT)
+ {
+ d->flags = VRING_DESC_F_NEXT;
+ vring->buffers[count] = bi;
+ b->flags &=
+ ~(VLIB_BUFFER_NEXT_PRESENT | VLIB_BUFFER_TOTAL_LENGTH_VALID);
+ bi = b->next_buffer;
+ b->next_buffer = 0;
+ n_added++;
+ count = (count + 1) & mask;
+ d->next = count;
+ d = &vring->desc[count];
+ b = vlib_get_buffer (vm, bi);
+ d->addr = vlib_buffer_get_current_pa (vm, b);
+ d->len = b->current_length;
+ }
+ d->flags = 0;
+ vring->buffers[count] = bi;
+ vring->avail->ring[avail & mask] = next;
+ n_added++;
+ return n_added;
+ }
+ else
+ {
+ ASSERT (0);
+ }
vring->buffers[next] = bi;
vring->avail->ring[avail & mask] = next;
n_added++;
return n_added;
}
+static_always_inline void
+virtio_find_free_desc (virtio_vring_t * vring, u16 size, u16 mask,
+ u16 req, u16 next, u32 * first_free_desc_index,
+ u16 * free_desc_count)
+{
+ u16 start = 0;
+ /* next is used as hint: from where to start looking */
+ for (u16 i = 0; i < size; i++, next++)
+ {
+ if (vring->buffers[next & mask] == ~0)
+ {
+ if (*first_free_desc_index == ~0)
+ {
+ *first_free_desc_index = (next & mask);
+ start = i;
+ (*free_desc_count)++;
+ req--;
+ if (req == 0)
+ break;
+ }
+ else
+ {
+ if (start + *free_desc_count == i)
+ {
+ (*free_desc_count)++;
+ req--;
+ if (req == 0)
+ break;
+ }
+ else
+ break;
+ }
+ }
+ }
+}
+
static_always_inline uword
-virtio_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame, virtio_if_t * vif,
- int do_gso)
+virtio_interface_tx_gso_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame, virtio_if_t * vif,
+ virtio_if_type_t type, int do_gso,
+ int csum_offload, int do_gro)
{
u16 n_left = frame->n_vectors;
virtio_vring_t *vring;
u16 qid = vm->thread_index % vif->num_txqs;
vring = vec_elt_at_index (vif->txq_vrings, qid);
- u16 used, next, avail;
+ u16 used, next, avail, n_buffers = 0, n_buffers_left = 0;
u16 sz = vring->size;
u16 mask = sz - 1;
+ u16 retry_count = 2;
u32 *buffers = vlib_frame_vector_args (frame);
+ u32 to[GRO_TO_VECTOR_SIZE (n_left)];
clib_spinlock_lock_if_init (&vring->lockp);
- if ((vring->used->flags & VIRTIO_RING_FLAG_MASK_INT) == 0 &&
+ if ((vring->used->flags & VRING_USED_F_NO_NOTIFY) == 0 &&
(vring->last_kick_avail_idx != vring->avail->idx))
virtio_kick (vm, vring, vif);
+ if (do_gro)
+ {
+ n_left = vnet_gro_inline (vm, vring->flow_table, buffers, n_left, to);
+ buffers = to;
+ }
+
+retry:
/* free consumed buffers */
- virtio_free_used_device_desc (vm, vring);
+ virtio_free_used_device_desc (vm, vring, node->node_index);
used = vring->desc_in_use;
next = vring->desc_next;
avail = vring->avail->idx;
- while (n_left && used < sz)
+ u16 free_desc_count = 0;
+
+ if (PREDICT_FALSE (vring->flags & VRING_TX_OUT_OF_ORDER))
+ {
+ u32 first_free_desc_index = ~0;
+
+ virtio_find_free_desc (vring, sz, mask, n_left, next,
+ &first_free_desc_index, &free_desc_count);
+
+ if (free_desc_count)
+ next = first_free_desc_index;
+ }
+ else
+ free_desc_count = sz - used;
+
+ if (vif->packet_buffering)
+ {
+ n_buffers = n_buffers_left = virtio_vring_n_buffers (vring->buffering);
+
+ while (n_buffers_left && free_desc_count)
+ {
+ u16 n_added = 0;
+
+ u32 bi = virtio_vring_buffering_read_from_front (vring->buffering);
+ if (bi == ~0)
+ break;
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, bi);
+ if (b0->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ virtio_tx_trace (vm, node, type, b0, buffers[0]);
+ }
+ n_added =
+ add_buffer_to_slot (vm, vif, type, vring, bi, free_desc_count,
+ avail, next, mask, do_gso, csum_offload,
+ node->node_index);
+ if (PREDICT_FALSE (n_added == 0))
+ {
+ n_buffers_left--;
+ continue;
+ }
+ else if (PREDICT_FALSE (n_added > free_desc_count))
+ break;
+
+ avail++;
+ next = (next + n_added) & mask;
+ used += n_added;
+ n_buffers_left--;
+ free_desc_count -= n_added;
+ }
+ }
+
+ while (n_left && free_desc_count)
{
u16 n_added = 0;
+
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, buffers[0]);
+ if (b0->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ virtio_tx_trace (vm, node, type, b0, buffers[0]);
+ }
n_added =
- add_buffer_to_slot (vm, vif, vring, buffers[0], avail, next, mask,
- do_gso);
- if (!n_added)
+ add_buffer_to_slot (vm, vif, type, vring, buffers[0], free_desc_count,
+ avail, next, mask, do_gso, csum_offload,
+ node->node_index);
+
+ if (PREDICT_FALSE (n_added == 0))
+ {
+ buffers++;
+ n_left--;
+ continue;
+ }
+ else if (PREDICT_FALSE (n_added > free_desc_count))
break;
- avail += n_added;
+
+ avail++;
next = (next + n_added) & mask;
used += n_added;
buffers++;
n_left--;
+ free_desc_count -= n_added;
}
- if (n_left != frame->n_vectors)
+ if (n_left != frame->n_vectors || n_buffers != n_buffers_left)
{
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)
+ if ((vring->used->flags & VRING_USED_F_NO_NOTIFY) == 0)
virtio_kick (vm, vring, vif);
}
if (n_left)
{
- vlib_error_count (vm, node->node_index, VIRTIO_TX_ERROR_NO_FREE_SLOTS,
- n_left);
- vlib_buffer_free (vm, buffers, n_left);
+ if (retry_count--)
+ goto retry;
+
+ if (vif->packet_buffering)
+ {
+
+ u16 n_buffered =
+ virtio_vring_buffering_store_packets (vring->buffering, buffers,
+ n_left);
+ buffers += n_buffered;
+ n_left -= n_buffered;
+ }
+ if (n_left)
+ virtio_interface_drop_inline (vm, node->node_index,
+ buffers, n_left,
+ VIRTIO_TX_ERROR_NO_FREE_SLOTS);
}
clib_spinlock_unlock_if_init (&vring->lockp);
return frame->n_vectors - n_left;
}
+static_always_inline uword
+virtio_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame, virtio_if_t * vif,
+ virtio_if_type_t type)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, vif->hw_if_index);
+
+ if (hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO)
+ return virtio_interface_tx_gso_inline (vm, node, frame, vif, type,
+ 1 /* do_gso */ ,
+ 1 /* checksum offload */ ,
+ vif->packet_coalesce);
+ else if (hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD)
+ return virtio_interface_tx_gso_inline (vm, node, frame, vif, type,
+ 0 /* no do_gso */ ,
+ 1 /* checksum offload */ ,
+ 0 /* do_gro */ );
+ else
+ return virtio_interface_tx_gso_inline (vm, node, frame, vif, type,
+ 0 /* no do_gso */ ,
+ 0 /* no checksum offload */ ,
+ 0 /* do_gro */ );
+}
+
VNET_DEVICE_CLASS_TX_FN (virtio_device_class) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
virtio_main_t *nm = &virtio_main;
vnet_interface_output_runtime_t *rund = (void *) node->runtime_data;
virtio_if_t *vif = pool_elt_at_index (nm->interfaces, rund->dev_instance);
- vnet_main_t *vnm = vnet_get_main ();
- if (vnm->interface_main.gso_interface_count > 0)
- return virtio_interface_tx_inline (vm, node, frame, vif, 1 /* do_gso */ );
- else
+ if (vif->type == VIRTIO_IF_TYPE_TAP)
+ return virtio_interface_tx_inline (vm, node, frame, vif,
+ VIRTIO_IF_TYPE_TAP);
+ else if (vif->type == VIRTIO_IF_TYPE_PCI)
+ return virtio_interface_tx_inline (vm, node, frame, vif,
+ VIRTIO_IF_TYPE_PCI);
+ else if (vif->type == VIRTIO_IF_TYPE_TUN)
return virtio_interface_tx_inline (vm, node, frame, vif,
- 0 /* no do_gso */ );
+ VIRTIO_IF_TYPE_TUN);
+ else
+ ASSERT (0);
+
+ return 0;
}
static void
virtio_main_t *mm = &virtio_main;
vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
virtio_if_t *vif = pool_elt_at_index (mm->interfaces, hw->dev_instance);
- virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, qid);
+ virtio_vring_t *rx_vring = vec_elt_at_index (vif->rxq_vrings, qid);
+ virtio_vring_t *tx_vring = 0;
if (vif->type == VIRTIO_IF_TYPE_PCI && !(vif->support_int_mode))
{
- vring->avail->flags |= VIRTIO_RING_FLAG_MASK_INT;
+ rx_vring->avail->flags |= VRING_AVAIL_F_NO_INTERRUPT;
return clib_error_return (0, "interrupt mode is not supported");
}
if (mode == VNET_HW_INTERFACE_RX_MODE_POLLING)
- vring->avail->flags |= VIRTIO_RING_FLAG_MASK_INT;
+ {
+ vec_foreach (tx_vring, vif->txq_vrings)
+ {
+ /* only enable packet coalesce in poll mode */
+ gro_flow_table_set_is_enable (tx_vring->flow_table, 1);
+ /* only enable packet buffering in poll mode */
+ virtio_vring_buffering_set_is_enable (tx_vring->buffering, 1);
+ }
+ rx_vring->avail->flags |= VRING_AVAIL_F_NO_INTERRUPT;
+ }
else
- vring->avail->flags &= ~VIRTIO_RING_FLAG_MASK_INT;
+ {
+ if (vif->packet_coalesce || vif->packet_buffering)
+ {
+ virtio_log_warning (vif,
+ "interface %U is in interrupt mode, disabling packet coalescing or buffering",
+ format_vnet_sw_if_index_name, vnet_get_main (),
+ vif->sw_if_index);
+ vec_foreach (tx_vring, vif->txq_vrings)
+ {
+ gro_flow_table_set_is_enable (tx_vring->flow_table, 0);
+ virtio_vring_buffering_set_is_enable (tx_vring->buffering, 0);
+ }
+ }
+ rx_vring->avail->flags &= ~VRING_AVAIL_F_NO_INTERRUPT;
+ }
return 0;
}
virtio_if_t *vif = pool_elt_at_index (mm->interfaces, hw->dev_instance);
if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
- vif->flags |= VIRTIO_IF_FLAG_ADMIN_UP;
+ {
+ vif->flags |= VIRTIO_IF_FLAG_ADMIN_UP;
+ vnet_hw_interface_set_flags (vnm, vif->hw_if_index,
+ VNET_HW_INTERFACE_FLAG_LINK_UP);
+ }
else
- vif->flags &= ~VIRTIO_IF_FLAG_ADMIN_UP;
-
+ {
+ vif->flags &= ~VIRTIO_IF_FLAG_ADMIN_UP;
+ vnet_hw_interface_set_flags (vnm, vif->hw_if_index, 0);
+ }
return 0;
}
.subif_add_del_function = virtio_subif_add_del_function,
.rx_mode_change_function = virtio_interface_rx_mode_change,
};
+
/* *INDENT-ON* */
/*
Code Review / vpp.git / blobdiff