diff options
| author |   Mohsin Kazmi <sykazmi@cisco.com> | 2021-01-27 14:16:56 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2021-02-01 11:05:41 +0000 |
| commit | 4b56340aacce8631ba0f1b52397ccd7fb9dfbb14 (patch) | |
| tree | 69e5ab07eadce9f8bd7445d84b61892898335093 | |
| parent | 64177a3ed84125fac21758fc60e62548c5cbdfaa (diff) | |
tap: fix the interrupt handling
Type: fix
Interrupt are suppressed from kernel on tx path.
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Change-Id: I9f39f343b7e16bad09910766adf0b09654721f67
| -rw-r--r-- | src/vnet/devices/virtio/virtio.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/vnet/devices/virtio/virtio.c b/src/vnet/devices/virtio/virtio.c index e84490ba575..2e49c798c7c 100644 --- a/src/vnet/devices/virtio/virtio.c +++ b/src/vnet/devices/virtio/virtio.c @@ -109,10 +109,13 @@ virtio_vring_init (vlib_main_t * vm, virtio_if_t * vif, u16 idx, u16 sz) if (idx & 1) { clib_memset_u32 (vring->buffers, ~0, sz); + // tx path: suppress the interrupts from kernel + vring->call_fd = -1; } + else + vring->call_fd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); vring->size = sz; - vring->call_fd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); vring->kick_fd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); virtio_log_debug (vif, "vring %u size %u call_fd %d kick_fd %d", idx, vring->size, vring->call_fd, vring->kick_fd); @@ -163,9 +166,7 @@ virtio_vring_free_tx (vlib_main_t * vm, virtio_if_t * vif, u32 idx) virtio_vring_t *vring = vec_elt_at_index (vif->txq_vrings, TX_QUEUE_ACCESS (idx)); - clib_file_del_by_index (&file_main, vring->call_file_index); close (vring->kick_fd); - close (vring->call_fd); if (vring->used) { virtio_free_buffers (vm, vring); |