| Mohsin Kazmi | a5203b5 | 2020-10-12 13:01:24 +0200 | [diff] [blame^] | 1 | /* |
| 2 | *------------------------------------------------------------------ |
| 3 | * Copyright (c) 2020 Cisco and/or its affiliates. |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at: |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | *------------------------------------------------------------------ |
| 16 | */ |
| 17 | |
| 18 | #include <vlib/vlib.h> |
| 19 | #include <vnet/devices/virtio/virtio.h> |
| 20 | #include <vnet/gso/gro_func.h> |
| 21 | |
| 22 | static uword |
| 23 | virtio_send_interrupt_process (vlib_main_t * vm, |
| 24 | vlib_node_runtime_t * rt, vlib_frame_t * f) |
| 25 | { |
| 26 | virtio_if_t *vif; |
| 27 | f64 timeout = 3153600000.0 /* 100 years */ ; |
| 28 | uword event_type, *event_data = 0; |
| 29 | virtio_main_t *vim = &virtio_main; |
| 30 | |
| 31 | while (1) |
| 32 | { |
| 33 | vlib_process_wait_for_event_or_clock (vm, timeout); |
| 34 | event_type = vlib_process_get_events (vm, &event_data); |
| 35 | vec_reset_length (event_data); |
| 36 | |
| 37 | switch (event_type) |
| 38 | { |
| 39 | case VIRTIO_EVENT_STOP_TIMER: |
| 40 | timeout = 3153600000.0; |
| 41 | break; |
| 42 | |
| 43 | case VIRTIO_EVENT_START_TIMER: |
| 44 | timeout = 1e-3; /* 1 millisecond */ |
| 45 | break; |
| 46 | |
| 47 | case ~0: |
| 48 | /* *INDENT-OFF* */ |
| 49 | pool_foreach (vif, vim->interfaces, { |
| 50 | if (vif->packet_coalesce || vif->packet_buffering) |
| 51 | { |
| 52 | virtio_vring_t *vring; |
| 53 | vec_foreach (vring, vif->rxq_vrings) |
| 54 | { |
| 55 | if (vring->mode == VNET_HW_IF_RX_MODE_INTERRUPT || |
| 56 | vring->mode == VNET_HW_IF_RX_MODE_ADAPTIVE) |
| 57 | vnet_device_input_set_interrupt_pending ( |
| 58 | vnet_get_main (), vif->hw_if_index, |
| 59 | RX_QUEUE_ACCESS (vring->queue_id)); |
| 60 | } |
| 61 | } |
| 62 | }); |
| 63 | /* *INDENT-ON* */ |
| 64 | break; |
| 65 | |
| 66 | default: |
| 67 | clib_warning ("BUG: unhandled event type %d", event_type); |
| 68 | break; |
| 69 | } |
| 70 | } |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | /* *INDENT-OFF* */ |
| 75 | VLIB_REGISTER_NODE (virtio_send_interrupt_node) = { |
| 76 | .function = virtio_send_interrupt_process, |
| 77 | .type = VLIB_NODE_TYPE_PROCESS, |
| 78 | .name = "virtio-send-interrupt-process", |
| 79 | }; |
| 80 | /* *INDENT-ON* */ |
| 81 | |
| 82 | /* |
| 83 | * fd.io coding-style-patch-verification: ON |
| 84 | * |
| 85 | * Local Variables: |
| 86 | * eval: (c-set-style "gnu") |
| 87 | * End: |
| 88 | */ |