#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/ethernet/ethernet.h>
-#include <vnet/devices/devices.h>
#include <vnet/feature/feature.h>
#include <vnet/gso/gro_func.h>
+#include <vnet/interface/rx_queue_funcs.h>
#include <vnet/ip/ip4_packet.h>
#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 (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_MEMORY_STORE_BARRIER ();
- vring->avail->idx = avail;
- vring->desc_next = next;
- vring->desc_in_use = used;
-
- if ((vring->used->flags & VRING_USED_F_NO_NOTIFY) == 0)
- {
- 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);
}
}
}
}
+static_always_inline u16
+virtio_n_left_to_process (virtio_vring_t * vring, const int packed)
+{
+ if (packed)
+ return vring->desc_in_use;
+ else
+ return vring->used->idx - vring->last_used_idx;
+}
+
+static_always_inline u16
+virtio_get_slot_id (virtio_vring_t * vring, const int packed, u16 last,
+ u16 mask)
+{
+ if (packed)
+ return vring->packed_desc[last].id;
+ else
+ return vring->used->ring[last & mask].id;
+}
+
+static_always_inline u16
+virtio_get_len (virtio_vring_t * vring, const int packed, const int hdr_sz,
+ u16 last, u16 mask)
+{
+ if (packed)
+ return vring->packed_desc[last].len - hdr_sz;
+ else
+ return vring->used->ring[last & mask].len - hdr_sz;
+}
+
+#define increment_last(last, packed, vring) \
+ do { \
+ last++; \
+ if (packed && last >= vring->size) \
+ { \
+ last = 0; \
+ vring->used_wrap_counter ^= 1; \
+ } \
+ } while (0)
+
static_always_inline uword
virtio_device_input_gso_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame, virtio_if_t * vif,
virtio_vring_t * vring, virtio_if_type_t type,
- int gso_enabled, int checksum_offload_enabled)
+ int gso_enabled, int checksum_offload_enabled,
+ int packed)
{
vnet_main_t *vnm = vnet_get_main ();
u32 thread_index = vm->thread_index;
u32 n_rx_bytes = 0;
u16 mask = vring->size - 1;
u16 last = vring->last_used_idx;
- u16 n_left = vring->used->idx - last;
+ u16 n_left = virtio_n_left_to_process (vring, packed);
vlib_buffer_t bt;
if (n_left == 0)
while (n_left && n_left_to_next)
{
+ if (packed)
+ {
+ vring_packed_desc_t *d = &vring->packed_desc[last];
+ u16 flags = d->flags;
+ if ((flags & VRING_DESC_F_AVAIL) !=
+ (vring->used_wrap_counter << 7)
+ || (flags & VRING_DESC_F_USED) !=
+ (vring->used_wrap_counter << 15))
+ {
+ n_left = 0;
+ break;
+ }
+ }
u8 l4_proto = 0, l4_hdr_sz = 0;
u16 num_buffers = 1;
- vring_used_elem_t *e = &vring->used->ring[last & mask];
virtio_net_hdr_v1_t *hdr;
- u16 slot = e->id;
- u16 len = e->len - hdr_sz;
+ u16 slot = virtio_get_slot_id (vring, packed, last, mask);
+ u16 len = virtio_get_len (vring, packed, hdr_sz, last, mask);
u32 bi0 = vring->buffers[slot];
vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
hdr = vlib_buffer_get_current (b0);
b0->total_length_not_including_first_buffer = 0;
while (num_buffers > 1)
{
- last++;
- e = &vring->used->ring[last & mask];
- u32 cbi = vring->buffers[e->id];
+ increment_last (last, packed, vring);
+ u16 cslot = virtio_get_slot_id (vring, packed, last, mask);
+ /* hdr size is 0 after 1st packet in chain buffers */
+ u16 clen = virtio_get_len (vring, packed, 0, last, mask);
+ u32 cbi = vring->buffers[cslot];
cb = vlib_get_buffer (vm, cbi);
/* current buffer */
- cb->current_length = e->len;
+ cb->current_length = clen;
/* previous buffer */
pb->next_buffer = cbi;
pb->flags |= VLIB_BUFFER_NEXT_PRESENT;
/* first buffer */
- b0->total_length_not_including_first_buffer += e->len;
+ b0->total_length_not_including_first_buffer += clen;
pb = cb;
vring->desc_in_use--;
}
/* trace */
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
-
- if (PREDICT_FALSE (n_trace > 0))
+ if (PREDICT_FALSE (n_trace > 0 && vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */
+ 1)))
{
virtio_input_trace_t *tr;
- vlib_trace_buffer (vm, node, next0, b0,
- /* follow_chain */ 1);
vlib_set_trace_count (vm, node, --n_trace);
tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->next_index = next0;
to_next += 1;
n_left_to_next--;
n_left--;
- last++;
+ increment_last (last, packed, vring);
/* only tun interfaces may have different next index */
if (type == VIRTIO_IF_TYPE_TUN)
clib_spinlock_unlock_if_init (&txq_vring->lockp);
}
- if ((vring->used->flags & VRING_USED_F_NO_NOTIFY) == 0 &&
- vring->last_kick_avail_idx != vring->avail->idx)
- virtio_kick (vm, vring, vif);
+ if (vif->is_packed)
+ {
+ if (vif->gso_enabled)
+ rv =
+ virtio_device_input_gso_inline (vm, node, frame, vif, vring, type,
+ 1, 1, 1);
+ else if (vif->csum_offload_enabled)
+ rv =
+ virtio_device_input_gso_inline (vm, node, frame, vif, vring, type,
+ 0, 1, 1);
+ else
+ rv =
+ virtio_device_input_gso_inline (vm, node, frame, vif, vring, type,
+ 0, 0, 1);
- if (vif->gso_enabled)
- rv = virtio_device_input_gso_inline (vm, node, frame, vif, vring, type,
- 1, 1);
- else if (vif->csum_offload_enabled)
- rv = virtio_device_input_gso_inline (vm, node, frame, vif, vring, type,
- 0, 1);
+ virtio_refill_vring_packed (vm, vif, type, vring, hdr_sz,
+ node->node_index);
+ }
else
- rv = virtio_device_input_gso_inline (vm, node, frame, vif, vring, type,
- 0, 0);
+ {
+ if (vif->gso_enabled)
+ rv =
+ virtio_device_input_gso_inline (vm, node, frame, vif, vring, type,
+ 1, 1, 0);
+ else if (vif->csum_offload_enabled)
+ rv =
+ virtio_device_input_gso_inline (vm, node, frame, vif, vring, type,
+ 0, 1, 0);
+ else
+ rv =
+ virtio_device_input_gso_inline (vm, node, frame, vif, vring, type,
+ 0, 0, 0);
- virtio_refill_vring (vm, vif, type, vring, hdr_sz, node->node_index);
+ virtio_refill_vring_split (vm, vif, type, vring, hdr_sz,
+ node->node_index);
+ }
return rv;
}
vlib_frame_t * frame)
{
u32 n_rx = 0;
- virtio_main_t *nm = &virtio_main;
- vnet_device_input_runtime_t *rt = (void *) node->runtime_data;
- vnet_device_and_queue_t *dq;
-
- foreach_device_and_queue (dq, rt->devices_and_queues)
- {
- virtio_if_t *vif;
- vif = vec_elt_at_index (nm->interfaces, dq->dev_instance);
- if (vif->flags & VIRTIO_IF_FLAG_ADMIN_UP)
- {
- if (vif->type == VIRTIO_IF_TYPE_TAP)
- n_rx += virtio_device_input_inline (vm, node, frame, vif,
- dq->queue_id,
- VIRTIO_IF_TYPE_TAP);
- else if (vif->type == VIRTIO_IF_TYPE_PCI)
- n_rx += virtio_device_input_inline (vm, node, frame, vif,
- dq->queue_id,
- VIRTIO_IF_TYPE_PCI);
- else if (vif->type == VIRTIO_IF_TYPE_TUN)
- n_rx += virtio_device_input_inline (vm, node, frame, vif,
- dq->queue_id,
- VIRTIO_IF_TYPE_TUN);
- }
- }
+ virtio_main_t *vim = &virtio_main;
+ vnet_hw_if_rxq_poll_vector_t *p,
+ *pv = vnet_hw_if_get_rxq_poll_vector (vm, node);
+
+ vec_foreach (p, pv)
+ {
+ virtio_if_t *vif;
+ vif = vec_elt_at_index (vim->interfaces, p->dev_instance);
+ if (vif->flags & VIRTIO_IF_FLAG_ADMIN_UP)
+ {
+ if (vif->type == VIRTIO_IF_TYPE_TAP)
+ n_rx += virtio_device_input_inline (
+ vm, node, frame, vif, p->queue_id, VIRTIO_IF_TYPE_TAP);
+ else if (vif->type == VIRTIO_IF_TYPE_PCI)
+ n_rx += virtio_device_input_inline (
+ vm, node, frame, vif, p->queue_id, VIRTIO_IF_TYPE_PCI);
+ else if (vif->type == VIRTIO_IF_TYPE_TUN)
+ n_rx += virtio_device_input_inline (
+ vm, node, frame, vif, p->queue_id, VIRTIO_IF_TYPE_TUN);
+ }
+ }
return n_rx;
}