#include <vnet/ethernet/ethernet.h>
#include <vnet/devices/devices.h>
#include <vnet/feature/feature.h>
+#include <vnet/gso/gro_func.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/udp/udp_packet.h>
#define foreach_virtio_input_error \
+ _(BUFFER_ALLOC, "buffer alloc error") \
_(UNKNOWN, "unknown")
typedef enum
u32 hw_if_index;
u16 ring;
u16 len;
- struct virtio_net_hdr_v1 hdr;
+ virtio_net_hdr_v1_t hdr;
} virtio_input_trace_t;
static u8 *
static_always_inline void
virtio_refill_vring (vlib_main_t * vm, virtio_if_t * vif,
- virtio_vring_t * vring, const int hdr_sz)
+ virtio_if_type_t type, virtio_vring_t * vring,
+ const int hdr_sz, u32 node_index)
{
- u16 used, next, avail, n_slots;
+ u16 used, next, avail, n_slots, n_refill;
u16 sz = vring->size;
u16 mask = sz - 1;
return;
/* deliver free buffers in chunks of 64 */
- n_slots = clib_min (sz - used, 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_slots,
+ vring->size, n_refill,
vring->buffer_pool_index);
- if (n_slots == 0)
- return;
+ 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)
{
- struct vring_desc *d = &vring->desc[next];;
+ 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 = 0;
- b->current_data -= hdr_sz;
+ b->current_data = -hdr_sz;
memset (vlib_buffer_get_current (b), 0, hdr_sz);
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)));
d->len = vlib_buffer_get_default_data_size (vm) + hdr_sz;
d->flags = VRING_DESC_F_WRITE;
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);
}
}
static_always_inline void
-fill_gso_buffer_flags (vlib_buffer_t * b0, struct virtio_net_hdr_v1 *hdr)
+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)
{
- u8 l4_proto = 0;
- u8 l4_hdr_sz = 0;
if (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM)
-
{
- ethernet_header_t *eh = (ethernet_header_t *) b0->data;
- u16 ethertype = clib_net_to_host_u16 (eh->type);
- u16 l2hdr_sz = sizeof (ethernet_header_t);
+ u16 ethertype = 0, l2hdr_sz = 0;
+
+ if (type == VIRTIO_IF_TYPE_TUN)
+ {
+ switch (b0->data[0] & 0xf0)
+ {
+ case 0x40:
+ ethertype = ETHERNET_TYPE_IP4;
+ break;
+ case 0x60:
+ ethertype = ETHERNET_TYPE_IP6;
+ break;
+ }
+ }
+ else
+ {
+ ethernet_header_t *eh =
+ (ethernet_header_t *) vlib_buffer_get_current (b0);
+ ethertype = clib_net_to_host_u16 (eh->type);
+ l2hdr_sz = sizeof (ethernet_header_t);
+
+ if (ethernet_frame_is_tagged (ethertype))
+ {
+ ethernet_vlan_header_t *vlan =
+ (ethernet_vlan_header_t *) (eh + 1);
+
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ l2hdr_sz += sizeof (*vlan);
+ if (ethertype == ETHERNET_TYPE_VLAN)
+ {
+ vlan++;
+ ethertype = clib_net_to_host_u16 (vlan->type);
+ l2hdr_sz += sizeof (*vlan);
+ }
+ }
+ }
vnet_buffer (b0)->l2_hdr_offset = 0;
vnet_buffer (b0)->l3_hdr_offset = l2hdr_sz;
+
if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP4))
{
- ip4_header_t *ip4 = (ip4_header_t *) (b0->data + l2hdr_sz);
+ ip4_header_t *ip4 =
+ (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;
+ *l4_proto = ip4->protocol;
b0->flags |=
- (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID
+ (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_L4_HDR_OFFSET_VALID);
- b0->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
}
else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6))
{
- ip6_header_t *ip6 = (ip6_header_t *) (b0->data + l2hdr_sz);
- /* FIXME IPv6 EH traversal */
+ ip6_header_t *ip6 =
+ (ip6_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + sizeof (ip6_header_t);
- l4_proto = ip6->protocol;
- b0->flags |=
- (VNET_BUFFER_F_IS_IP6 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID
- | VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
- VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
- b0->flags |= VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
+ /* FIXME IPv6 EH traversal */
+ *l4_proto = ip6->protocol;
+ b0->flags |= (VNET_BUFFER_F_IS_IP6 |
+ VNET_BUFFER_F_L2_HDR_OFFSET_VALID
+ | VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
+ VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
}
- if (l4_proto == IP_PROTOCOL_TCP)
+ if (*l4_proto == IP_PROTOCOL_TCP)
{
b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
- tcp_header_t *tcp = (tcp_header_t *) (b0->data +
+ tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b0) +
vnet_buffer
(b0)->l4_hdr_offset);
- l4_hdr_sz = tcp_header_bytes (tcp);
- tcp->checksum = 0;
+ *l4_hdr_sz = tcp_header_bytes (tcp);
}
- else if (l4_proto == IP_PROTOCOL_UDP)
+ else if (*l4_proto == IP_PROTOCOL_UDP)
{
b0->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
- udp_header_t *udp = (udp_header_t *) (b0->data +
+ udp_header_t *udp = (udp_header_t *) (vlib_buffer_get_current (b0) +
vnet_buffer
(b0)->l4_hdr_offset);
- l4_hdr_sz = sizeof (*udp);
- udp->checksum = 0;
+ *l4_hdr_sz = sizeof (*udp);
}
}
+}
+static_always_inline void
+fill_gso_buffer_flags (vlib_buffer_t * b0, virtio_net_hdr_v1_t * hdr,
+ u8 l4_proto, u8 l4_hdr_sz)
+{
if (hdr->gso_type == VIRTIO_NET_HDR_GSO_TCPV4)
{
ASSERT (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM);
vnet_buffer2 (b0)->gso_size = hdr->gso_size;
vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz;
- b0->flags |= VNET_BUFFER_F_GSO;
- b0->flags |= VNET_BUFFER_F_IS_IP4;
+ b0->flags |= VNET_BUFFER_F_GSO | VNET_BUFFER_F_IS_IP4;
}
if (hdr->gso_type == VIRTIO_NET_HDR_GSO_TCPV6)
{
ASSERT (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM);
vnet_buffer2 (b0)->gso_size = hdr->gso_size;
vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz;
- b0->flags |= VNET_BUFFER_F_GSO;
- b0->flags |= VNET_BUFFER_F_IS_IP6;
+ b0->flags |= VNET_BUFFER_F_GSO | VNET_BUFFER_F_IS_IP6;
}
}
-
static_always_inline uword
-virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame, virtio_if_t * vif, u16 qid,
- int gso_enabled)
+virtio_device_input_gso_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame, virtio_if_t * vif,
+ u16 qid, virtio_if_type_t type,
+ int gso_enabled, int checksum_offload_enabled)
{
vnet_main_t *vnm = vnet_get_main ();
u32 thread_index = vm->thread_index;
uword n_trace = vlib_get_trace_count (vm, node);
virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, qid);
+ u16 txq_id = thread_index % vif->num_txqs;
+ virtio_vring_t *txq_vring = vec_elt_at_index (vif->txq_vrings, txq_id);
u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
const int hdr_sz = vif->virtio_net_hdr_sz;
u32 *to_next = 0;
u16 last = vring->last_used_idx;
u16 n_left = vring->used->idx - last;
- if ((vring->used->flags & VIRTIO_RING_FLAG_MASK_INT) == 0 &&
+ if (clib_spinlock_trylock_if_init (&txq_vring->lockp))
+ {
+ if (vif->packet_coalesce)
+ vnet_gro_flow_table_schedule_node_on_dispatcher (vm,
+ txq_vring->flow_table);
+ else if (vif->packet_buffering)
+ virtio_vring_buffering_schedule_node_on_dispatcher (vm,
+ txq_vring->buffering);
+ 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 (n_left == 0)
goto refill;
+ if (type == VIRTIO_IF_TYPE_TUN)
+ next_index = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
+
while (n_left)
{
u32 n_left_to_next;
u32 next0 = next_index;
+
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left && n_left_to_next)
{
+ u8 l4_proto = 0, l4_hdr_sz = 0;
u16 num_buffers = 1;
- struct vring_used_elem *e = &vring->used->ring[last & mask];
- struct virtio_net_hdr_v1 *hdr;
+ 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;
u32 bi0 = vring->buffers[slot];
vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
hdr = vlib_buffer_get_current (b0);
- if (hdr_sz == sizeof (struct virtio_net_hdr_v1))
+ if (hdr_sz == sizeof (virtio_net_hdr_v1_t))
num_buffers = hdr->num_buffers;
- b0->current_data += hdr_sz;
- b0->current_length = len;
- b0->total_length_not_including_first_buffer = 0;
b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ b0->current_data = 0;
+ b0->current_length = len;
+
+ if (checksum_offload_enabled)
+ virtio_needs_csum (b0, hdr, &l4_proto, &l4_hdr_sz, type);
if (gso_enabled)
- fill_gso_buffer_flags (b0, hdr);
+ fill_gso_buffer_flags (b0, hdr, l4_proto, l4_hdr_sz);
vnet_buffer (b0)->sw_if_index[VLIB_RX] = vif->sw_if_index;
vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
{
vlib_buffer_t *pb, *cb;
pb = b0;
+ b0->total_length_not_including_first_buffer = 0;
while (num_buffers > 1)
{
last++;
num_buffers--;
n_left--;
}
+ len += b0->total_length_not_including_first_buffer;
+ }
+
+ if (type == VIRTIO_IF_TYPE_TUN)
+ {
+ switch (b0->data[0] & 0xf0)
+ {
+ case 0x40:
+ next0 = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
+ break;
+ case 0x60:
+ next0 = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
+ break;
+ default:
+ next0 = VNET_DEVICE_INPUT_NEXT_DROP;
+ break;
+ }
}
if (PREDICT_FALSE (vif->per_interface_next_index != ~0))
next0 = vif->per_interface_next_index;
- else
- /* redirect if feature path enabled */
- vnet_feature_start_device_input_x1 (vif->sw_if_index, &next0, b0);
+
+ if (type != VIRTIO_IF_TYPE_TUN)
+ {
+ /* only for l2, redirect if feature path enabled */
+ vnet_feature_start_device_input_x1 (vif->sw_if_index, &next0,
+ b0);
+ }
+
/* trace */
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->next_index = next0;
tr->hw_if_index = vif->hw_if_index;
- tr->len = len + b0->total_length_not_including_first_buffer;
+ tr->len = len;
clib_memcpy_fast (&tr->hdr, hdr, hdr_sz);
}
/* next packet */
n_rx_packets++;
- n_rx_bytes += (len + b0->total_length_not_including_first_buffer);
+ n_rx_bytes += len;
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
vlib_increment_combined_counter (vnm->interface_main.combined_sw_if_counters
+ VNET_INTERFACE_COUNTER_RX, thread_index,
- vif->hw_if_index, n_rx_packets,
+ vif->sw_if_index, n_rx_packets,
n_rx_bytes);
refill:
- virtio_refill_vring (vm, vif, vring, hdr_sz);
+ virtio_refill_vring (vm, vif, type, vring, hdr_sz, node->node_index);
return n_rx_packets;
}
+static_always_inline uword
+virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame, virtio_if_t * vif, u16 qid,
+ virtio_if_type_t type)
+{
+
+ if (vif->gso_enabled)
+ return virtio_device_input_gso_inline (vm, node, frame, vif,
+ qid, type, 1, 1);
+ else if (vif->csum_offload_enabled)
+ return virtio_device_input_gso_inline (vm, node, frame, vif,
+ qid, type, 0, 1);
+ else
+ return virtio_device_input_gso_inline (vm, node, frame, vif,
+ qid, type, 0, 0);
+ return 0;
+}
+
VLIB_NODE_FN (virtio_input_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
vif = vec_elt_at_index (nm->interfaces, dq->dev_instance);
if (vif->flags & VIRTIO_IF_FLAG_ADMIN_UP)
{
- if (vif->gso_enabled)
+ 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, 1);
- else
+ 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, 0);
+ dq->queue_id,
+ VIRTIO_IF_TYPE_TUN);
}
}
.name = "virtio-input",
.sibling_of = "device-input",
.format_trace = format_virtio_input_trace,
+ .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
.type = VLIB_NODE_TYPE_INPUT,
.state = VLIB_NODE_STATE_INTERRUPT,
.n_errors = VIRTIO_INPUT_N_ERROR,
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