diff options
| author |   Damjan Marion <damarion@cisco.com> | 2018-12-20 10:44:47 +0100 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2019-01-08 17:03:56 +0000 |
| commit | e40231b1ecf4b49faaa9ce7b615a7d867104825b (patch) | |
| tree | f7f7b4fed09740dadee4d270ffb68155a06195a1 /src/vnet/devices/virtio/virtio.h | |
| parent | 294afe297c74c7c9413c6bd4856e92c9bc439e7c (diff) | |
virtio: fix kick race issue
Change-Id: I25b2a28513821bc5eab9ac6890a3964d412b0399
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vnet/devices/virtio/virtio.h')
| -rw-r--r-- | src/vnet/devices/virtio/virtio.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/vnet/devices/virtio/virtio.h b/src/vnet/devices/virtio/virtio.h index e401f2ddcd7..841441bd0c6 100644 --- a/src/vnet/devices/virtio/virtio.h +++ b/src/vnet/devices/virtio/virtio.h @@ -87,6 +87,7 @@ typedef struct u32 call_file_index; u32 *buffers; u16 last_used_idx; + u16 last_kick_avail_idx; } virtio_vring_t; typedef struct @@ -137,6 +138,16 @@ extern void virtio_free_used_desc (vlib_main_t * vm, virtio_vring_t * vring); format_function_t format_virtio_device_name; +static_always_inline void +virtio_kick (virtio_vring_t * vring) +{ + u64 x = 1; + int __clib_unused r; + + r = write (vring->kick_fd, &x, sizeof (x)); + vring->last_kick_avail_idx = vring->avail->idx; +} + #endif /* _VNET_DEVICES_VIRTIO_VIRTIO_H_ */ /* |