#include <vnet/ip/ip6_packet.h>
#include <vnet/udp/udp_packet.h>
#include <vnet/devices/virtio/virtio.h>
-
-#define foreach_virtio_input_error \
- _(BUFFER_ALLOC, "buffer alloc error") \
- _(UNKNOWN, "unknown")
-
-typedef enum
-{
-#define _(f,s) VIRTIO_INPUT_ERROR_##f,
- foreach_virtio_input_error
-#undef _
- VIRTIO_INPUT_N_ERROR,
-} virtio_input_error_t;
+#include <vnet/devices/virtio/virtio_inline.h>
static char *virtio_input_error_strings[] = {
-#define _(n,s) s,
+#define _(n, s) s,
foreach_virtio_input_error
#undef _
};
return s;
}
-static_always_inline void
-virtio_refill_vring_split (vlib_main_t * vm, virtio_if_t * vif,
- virtio_if_type_t type, virtio_vring_t * vring,
- const int hdr_sz, u32 node_index)
-{
- u16 used, next, avail, n_slots, n_refill;
- u16 sz = vring->size;
- u16 mask = sz - 1;
-
-more:
- used = vring->desc_in_use;
-
- if (sz - used < sz / 8)
- return;
-
- /* deliver free buffers in chunks of 64 */
- n_refill = clib_min (sz - used, 64);
-
- next = vring->desc_next;
- avail = vring->avail->idx;
- n_slots =
- vlib_buffer_alloc_to_ring_from_pool (vm, vring->buffers, next,
- vring->size, n_refill,
- vring->buffer_pool_index);
-
- if (PREDICT_FALSE (n_slots != n_refill))
- {
- vlib_error_count (vm, node_index,
- VIRTIO_INPUT_ERROR_BUFFER_ALLOC, n_refill - n_slots);
- if (n_slots == 0)
- return;
- }
-
- while (n_slots)
- {
- vring_desc_t *d = &vring->desc[next];;
- vlib_buffer_t *b = vlib_get_buffer (vm, vring->buffers[next]);
- /*
- * current_data may not be initialized with 0 and may contain
- * previous offset. Here we want to make sure, it should be 0
- * initialized.
- */
- b->current_data = -hdr_sz;
- memset (vlib_buffer_get_current (b), 0, hdr_sz);
- d->addr =
- ((type == VIRTIO_IF_TYPE_PCI) ? vlib_buffer_get_current_pa (vm,
- b) :
- pointer_to_uword (vlib_buffer_get_current (b)));
- d->len = vlib_buffer_get_default_data_size (vm) + hdr_sz;
- d->flags = VRING_DESC_F_WRITE;
- vring->avail->ring[avail & mask] = next;
- avail++;
- next = (next + 1) & mask;
- n_slots--;
- used++;
- }
- clib_atomic_store_seq_cst (&vring->avail->idx, avail);
- vring->desc_next = next;
- vring->desc_in_use = used;
- if ((clib_atomic_load_seq_cst (&vring->used->flags) &
- VRING_USED_F_NO_NOTIFY) == 0)
- {
- virtio_kick (vm, vring, vif);
- }
- goto more;
-}
-
-static_always_inline void
-virtio_refill_vring_packed (vlib_main_t * vm, virtio_if_t * vif,
- virtio_if_type_t type, virtio_vring_t * vring,
- const int hdr_sz, u32 node_index)
-{
- u16 used, next, n_slots, n_refill, flags = 0, first_desc_flags;
- u16 sz = vring->size;
-
-more:
- used = vring->desc_in_use;
-
- if (sz == used)
- return;
-
- /* deliver free buffers in chunks of 64 */
- n_refill = clib_min (sz - used, 64);
-
- next = vring->desc_next;
- first_desc_flags = vring->packed_desc[next].flags;
- n_slots =
- vlib_buffer_alloc_to_ring_from_pool (vm, vring->buffers, next,
- sz, n_refill,
- vring->buffer_pool_index);
-
- if (PREDICT_FALSE (n_slots != n_refill))
- {
- vlib_error_count (vm, node_index,
- VIRTIO_INPUT_ERROR_BUFFER_ALLOC, n_refill - n_slots);
- if (n_slots == 0)
- return;
- }
-
- while (n_slots)
- {
- vring_packed_desc_t *d = &vring->packed_desc[next];
- vlib_buffer_t *b = vlib_get_buffer (vm, vring->buffers[next]);
- /*
- * current_data may not be initialized with 0 and may contain
- * previous offset. Here we want to make sure, it should be 0
- * initialized.
- */
- b->current_data = -hdr_sz;
- memset (vlib_buffer_get_current (b), 0, hdr_sz);
- d->addr =
- ((type == VIRTIO_IF_TYPE_PCI) ? vlib_buffer_get_current_pa (vm,
- b) :
- pointer_to_uword (vlib_buffer_get_current (b)));
- d->len = vlib_buffer_get_default_data_size (vm) + hdr_sz;
-
- if (vring->avail_wrap_counter)
- flags = (VRING_DESC_F_AVAIL | VRING_DESC_F_WRITE);
- else
- flags = (VRING_DESC_F_USED | VRING_DESC_F_WRITE);
-
- d->id = next;
- if (vring->desc_next == next)
- first_desc_flags = flags;
- else
- d->flags = flags;
-
- next++;
- if (next >= sz)
- {
- next = 0;
- vring->avail_wrap_counter ^= 1;
- }
- n_slots--;
- 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);
- }
-
- goto more;
-}
-
static_always_inline void
virtio_needs_csum (vlib_buffer_t * b0, virtio_net_hdr_v1_t * hdr,
u8 * l4_proto, u8 * l4_hdr_sz, virtio_if_type_t type)
if (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM)
{
u16 ethertype = 0, l2hdr_sz = 0;
+ u32 oflags = 0;
if (type == VIRTIO_IF_TYPE_TUN)
{
(ip4_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4);
*l4_proto = ip4->protocol;
+ oflags |= VNET_BUFFER_OFFLOAD_F_IP_CKSUM;
b0->flags |=
- (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_OFFLOAD_IP_CKSUM);
- b0->flags |=
- (VNET_BUFFER_F_L2_HDR_OFFSET_VALID
- | VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
+ (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
+ VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
}
else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6))
}
if (*l4_proto == IP_PROTOCOL_TCP)
{
- b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ oflags |= VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b0) +
vnet_buffer
(b0)->l4_hdr_offset);
}
else if (*l4_proto == IP_PROTOCOL_UDP)
{
- b0->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
+ oflags |= VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
udp_header_t *udp = (udp_header_t *) (vlib_buffer_get_current (b0) +
vnet_buffer
(b0)->l4_hdr_offset);
*l4_hdr_sz = sizeof (*udp);
}
+ if (oflags)
+ vnet_buffer_offload_flags_set (b0, oflags);
}
}
}
/* trace */
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
-
if (PREDICT_FALSE (n_trace > 0 && vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */
1)))
{