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-rw-r--r--src/vnet/devices/virtio/node.c164
-rw-r--r--src/vnet/devices/virtio/virtio.c18
-rw-r--r--src/vnet/devices/virtio/virtio_inline.h182
3 files changed, 202 insertions, 162 deletions
diff --git a/src/vnet/devices/virtio/node.c b/src/vnet/devices/virtio/node.c
index df8c0fa9a64..f91dc877fb4 100644
--- a/src/vnet/devices/virtio/node.c
+++ b/src/vnet/devices/virtio/node.c
@@ -33,21 +33,10 @@
#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 _
};
@@ -80,155 +69,6 @@ format_virtio_input_trace (u8 * s, va_list * args)
}
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;
- clib_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;
- clib_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)
{
diff --git a/src/vnet/devices/virtio/virtio.c b/src/vnet/devices/virtio/virtio.c
index 4f812b1e7aa..b8054d13e5b 100644
--- a/src/vnet/devices/virtio/virtio.c
+++ b/src/vnet/devices/virtio/virtio.c
@@ -30,6 +30,7 @@
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/devices/virtio/virtio.h>
+#include <vnet/devices/virtio/virtio_inline.h>
#include <vnet/devices/virtio/pci.h>
#include <vnet/interface/rx_queue_funcs.h>
@@ -220,6 +221,19 @@ virtio_set_packet_buffering (virtio_if_t * vif, u16 buffering_size)
return error;
}
+static void
+virtio_vring_fill (vlib_main_t *vm, virtio_if_t *vif, virtio_vring_t *vring)
+{
+ if (vif->is_packed)
+ virtio_refill_vring_packed (vm, vif, vif->type, vring,
+ vif->virtio_net_hdr_sz,
+ virtio_input_node.index);
+ else
+ virtio_refill_vring_split (vm, vif, vif->type, vring,
+ vif->virtio_net_hdr_sz,
+ virtio_input_node.index);
+}
+
void
virtio_vring_set_rx_queues (vlib_main_t *vm, virtio_if_t *vif)
{
@@ -262,6 +276,10 @@ virtio_vring_set_rx_queues (vlib_main_t *vm, virtio_if_t *vif)
file_index);
i++;
}
+ vnet_hw_if_set_rx_queue_mode (vnm, vring->queue_index,
+ VNET_HW_IF_RX_MODE_POLLING);
+ vring->mode = VNET_HW_IF_RX_MODE_POLLING;
+ virtio_vring_fill (vm, vif, vring);
}
vnet_hw_if_update_runtime_data (vnm, vif->hw_if_index);
}
diff --git a/src/vnet/devices/virtio/virtio_inline.h b/src/vnet/devices/virtio/virtio_inline.h
new file mode 100644
index 00000000000..209817d48c7
--- /dev/null
+++ b/src/vnet/devices/virtio/virtio_inline.h
@@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef __VIRTIO_INLINE_H__
+#define __VIRTIO_INLINE_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;
+
+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;
+ clib_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;
+ clib_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;
+}
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */