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/*
*------------------------------------------------------------------
* 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:
*/
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