diff options
| author |   Mohsin Kazmi <sykazmi@cisco.com> | 2020-09-28 10:26:33 +0000 |
|---|---|---|
| committer |   Beno�t Ganne <bganne@cisco.com> | 2020-09-28 16:47:30 +0000 |
| commit | e347acbc31111504c015531e8ad764a86d489309 (patch) | |
| tree | 3a72d961fd97b9ce7985865d89b0c45d27cab2fc /src/vnet/devices/virtio/virtio_api.c | |
| parent | 7741afaf5c66a5d7ed1d2d76ae36a81ec24fdaaa (diff) | |
virtio: add packet buffering on tx
Type: feature
This patch adds packet buffering on tx for
slow backend which have some jitter/delays
in freeing the vrings.
There are some limitations to the current design:
1) It only works in poll mode.
2) Atleast 1 rx queue of an interface (with buffering
enabled) should be placed on each worker and main thread.
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Change-Id: Ib93c350298b228e80426e58ac77f3bbc93b8be27
Diffstat (limited to 'src/vnet/devices/virtio/virtio_api.c')
| -rw-r--r-- | src/vnet/devices/virtio/virtio_api.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/vnet/devices/virtio/virtio_api.c b/src/vnet/devices/virtio/virtio_api.c index 9a145d94a41..d9931046083 100644 --- a/src/vnet/devices/virtio/virtio_api.c +++ b/src/vnet/devices/virtio/virtio_api.c @@ -126,15 +126,18 @@ vl_api_virtio_pci_create_v2_t_handler (vl_api_virtio_pci_create_v2_t * mp) STATIC_ASSERT (((int) VIRTIO_API_FLAG_IN_ORDER == (int) VIRTIO_FLAG_IN_ORDER), "virtio in-order api flag mismatch"); + STATIC_ASSERT (((int) VIRTIO_API_FLAG_BUFFERING == + (int) VIRTIO_FLAG_BUFFERING), + "virtio buffering api flag mismatch"); ap->virtio_flags = clib_net_to_host_u32 (mp->virtio_flags); ap->features = clib_net_to_host_u64 (mp->features); - if (ap->virtio_flags & VIRTIO_FLAG_GSO) + if (ap->virtio_flags & VIRTIO_API_FLAG_GSO) ap->gso_enabled = 1; else ap->gso_enabled = 0; - if (ap->virtio_flags & VIRTIO_FLAG_CSUM_OFFLOAD) + if (ap->virtio_flags & VIRTIO_API_FLAG_CSUM_OFFLOAD) ap->checksum_offload_enabled = 1; else ap->checksum_offload_enabled = 0; |