| /* |
| *------------------------------------------------------------------ |
| * Copyright (c) 2016 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. |
| *------------------------------------------------------------------ |
| */ |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <net/if.h> |
| #include <linux/if_tun.h> |
| #include <sys/ioctl.h> |
| #include <sys/eventfd.h> |
| |
| #include <vlib/vlib.h> |
| #include <vlib/unix/unix.h> |
| #include <vnet/ethernet/ethernet.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; |
| |
| static char *virtio_input_error_strings[] = { |
| #define _(n,s) s, |
| foreach_virtio_input_error |
| #undef _ |
| }; |
| |
| typedef struct |
| { |
| u32 next_index; |
| u32 hw_if_index; |
| u16 ring; |
| u16 len; |
| virtio_net_hdr_v1_t hdr; |
| } virtio_input_trace_t; |
| |
| static u8 * |
| format_virtio_input_trace (u8 * s, va_list * args) |
| { |
| CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
| virtio_input_trace_t *t = va_arg (*args, virtio_input_trace_t *); |
| u32 indent = format_get_indent (s); |
| |
| s = format (s, "virtio: hw_if_index %d next-index %d vring %u len %u", |
| t->hw_if_index, t->next_index, t->ring, t->len); |
| s = format (s, "\n%Uhdr: flags 0x%02x gso_type 0x%02x hdr_len %u " |
| "gso_size %u csum_start %u csum_offset %u num_buffers %u", |
| format_white_space, indent + 2, |
| t->hdr.flags, t->hdr.gso_type, t->hdr.hdr_len, t->hdr.gso_size, |
| t->hdr.csum_start, t->hdr.csum_offset, t->hdr.num_buffers); |
| 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_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_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; |
| |
| 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 *) (vlib_buffer_get_current (b0) + l2hdr_sz); |
| vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4); |
| *l4_proto = ip4->protocol; |
| 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_L4_HDR_OFFSET_VALID); |
| } |
| else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6)) |
| { |
| 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); |
| /* 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) |
| { |
| b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM; |
| 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); |
| } |
| else if (*l4_proto == IP_PROTOCOL_UDP) |
| { |
| b0->flags |= VNET_BUFFER_F_OFFLOAD_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); |
| } |
| } |
| } |
| |
| 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 | 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 | VNET_BUFFER_F_IS_IP6; |
| } |
| } |
| |
| 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 packed) |
| { |
| vnet_main_t *vnm = vnet_get_main (); |
| u32 thread_index = vm->thread_index; |
| uword n_trace = vlib_get_trace_count (vm, node); |
| u32 next_index; |
| const int hdr_sz = vif->virtio_net_hdr_sz; |
| u32 *to_next = 0; |
| u32 n_rx_packets = 0; |
| u32 n_rx_bytes = 0; |
| u16 mask = vring->size - 1; |
| u16 last = vring->last_used_idx; |
| u16 n_left = virtio_n_left_to_process (vring, packed); |
| vlib_buffer_t bt; |
| |
| if (n_left == 0) |
| return 0; |
| |
| if (type == VIRTIO_IF_TYPE_TUN) |
| { |
| next_index = VNET_DEVICE_INPUT_NEXT_IP4_INPUT; |
| } |
| else |
| { |
| next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; |
| if (PREDICT_FALSE (vif->per_interface_next_index != ~0)) |
| next_index = vif->per_interface_next_index; |
| |
| /* only for l2, redirect if feature path enabled */ |
| vnet_feature_start_device_input_x1 (vif->sw_if_index, &next_index, &bt); |
| } |
| |
| 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) |
| { |
| 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; |
| virtio_net_hdr_v1_t *hdr; |
| 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); |
| if (hdr_sz == sizeof (virtio_net_hdr_v1_t)) |
| num_buffers = hdr->num_buffers; |
| |
| 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, 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; |
| |
| /* if multisegment packet */ |
| if (PREDICT_FALSE (num_buffers > 1)) |
| { |
| vlib_buffer_t *pb, *cb; |
| pb = b0; |
| b0->total_length_not_including_first_buffer = 0; |
| while (num_buffers > 1) |
| { |
| 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 = clen; |
| |
| /* previous buffer */ |
| pb->next_buffer = cbi; |
| pb->flags |= VLIB_BUFFER_NEXT_PRESENT; |
| |
| /* first buffer */ |
| b0->total_length_not_including_first_buffer += clen; |
| |
| pb = cb; |
| vring->desc_in_use--; |
| 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 |
| { |
| /* copy feature arc data from template */ |
| b0->current_config_index = bt.current_config_index; |
| vnet_buffer (b0)->feature_arc_index = |
| vnet_buffer (&bt)->feature_arc_index; |
| } |
| |
| /* trace */ |
| VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); |
| |
| if (PREDICT_FALSE (n_trace > 0 && vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ |
| 1))) |
| { |
| virtio_input_trace_t *tr; |
| vlib_set_trace_count (vm, node, --n_trace); |
| tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); |
| tr->next_index = next0; |
| tr->hw_if_index = vif->hw_if_index; |
| tr->len = len; |
| clib_memcpy_fast (&tr->hdr, hdr, hdr_sz); |
| } |
| |
| /* enqueue buffer */ |
| to_next[0] = bi0; |
| vring->desc_in_use--; |
| to_next += 1; |
| n_left_to_next--; |
| n_left--; |
| increment_last (last, packed, vring); |
| |
| /* only tun interfaces may have different next index */ |
| if (type == VIRTIO_IF_TYPE_TUN) |
| vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, |
| n_left_to_next, bi0, next0); |
| |
| /* next packet */ |
| n_rx_packets++; |
| n_rx_bytes += len; |
| } |
| vlib_put_next_frame (vm, node, next_index, n_left_to_next); |
| } |
| vring->last_used_idx = last; |
| |
| vlib_increment_combined_counter (vnm->interface_main.combined_sw_if_counters |
| + VNET_INTERFACE_COUNTER_RX, thread_index, |
| vif->sw_if_index, n_rx_packets, |
| n_rx_bytes); |
| |
| 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) |
| { |
| virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, qid); |
| const int hdr_sz = vif->virtio_net_hdr_sz; |
| u16 txq_id = vm->thread_index % vif->num_txqs; |
| virtio_vring_t *txq_vring = vec_elt_at_index (vif->txq_vrings, txq_id); |
| uword rv; |
| |
| 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 (vif->is_packed) |
| { |
| if (vring->device_event->flags != VRING_EVENT_F_DISABLE) |
| virtio_kick (vm, vring, vif); |
| |
| 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); |
| |
| virtio_refill_vring_packed (vm, vif, type, vring, hdr_sz, |
| node->node_index); |
| } |
| else |
| { |
| 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->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_split (vm, vif, type, vring, hdr_sz, |
| node->node_index); |
| } |
| return rv; |
| } |
| |
| VLIB_NODE_FN (virtio_input_node) (vlib_main_t * vm, |
| vlib_node_runtime_t * node, |
| vlib_frame_t * frame) |
| { |
| u32 n_rx = 0; |
| 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; |
| } |
| |
| /* *INDENT-OFF* */ |
| VLIB_REGISTER_NODE (virtio_input_node) = { |
| .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, |
| .error_strings = virtio_input_error_strings, |
| }; |
| /* *INDENT-ON* */ |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |