diff options
Diffstat (limited to 'src/vnet/devices/virtio/virtio_process.c')
| -rw-r--r-- | src/vnet/devices/virtio/virtio_process.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/vnet/devices/virtio/virtio_process.c b/src/vnet/devices/virtio/virtio_process.c new file mode 100644 index 00000000000..7a25611bb95 --- /dev/null +++ b/src/vnet/devices/virtio/virtio_process.c @@ -0,0 +1,88 @@ +/* + *------------------------------------------------------------------ + * Copyright (c) 2020 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 <vlib/vlib.h> +#include <vnet/devices/virtio/virtio.h> +#include <vnet/gso/gro_func.h> + +static uword +virtio_send_interrupt_process (vlib_main_t * vm, + vlib_node_runtime_t * rt, vlib_frame_t * f) +{ + virtio_if_t *vif; + f64 timeout = 3153600000.0 /* 100 years */ ; + uword event_type, *event_data = 0; + virtio_main_t *vim = &virtio_main; + + while (1) + { + vlib_process_wait_for_event_or_clock (vm, timeout); + event_type = vlib_process_get_events (vm, &event_data); + vec_reset_length (event_data); + + switch (event_type) + { + case VIRTIO_EVENT_STOP_TIMER: + timeout = 3153600000.0; + break; + + case VIRTIO_EVENT_START_TIMER: + timeout = 1e-3; /* 1 millisecond */ + break; + + case ~0: + /* *INDENT-OFF* */ + pool_foreach (vif, vim->interfaces, { + if (vif->packet_coalesce || vif->packet_buffering) + { + virtio_vring_t *vring; + vec_foreach (vring, vif->rxq_vrings) + { + if (vring->mode == VNET_HW_IF_RX_MODE_INTERRUPT || + vring->mode == VNET_HW_IF_RX_MODE_ADAPTIVE) + vnet_device_input_set_interrupt_pending ( + vnet_get_main (), vif->hw_if_index, + RX_QUEUE_ACCESS (vring->queue_id)); + } + } + }); + /* *INDENT-ON* */ + break; + + default: + clib_warning ("BUG: unhandled event type %d", event_type); + break; + } + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (virtio_send_interrupt_node) = { + .function = virtio_send_interrupt_process, + .type = VLIB_NODE_TYPE_PROCESS, + .name = "virtio-send-interrupt-process", +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |