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| 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 | |
| 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')
| -rw-r--r-- | src/vnet/devices/virtio/virtio.api | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/vnet/devices/virtio/virtio.api b/src/vnet/devices/virtio/virtio.api index 3c8aed2e159..bbe2341a001 100644 --- a/src/vnet/devices/virtio/virtio.api +++ b/src/vnet/devices/virtio/virtio.api @@ -62,6 +62,7 @@ enum virtio_flags { VIRTIO_API_FLAG_GRO_COALESCE = 4, /* enable packet coalescing on tx side, provided gso enabled */ VIRTIO_API_FLAG_PACKED = 8, /* enable packed ring support, provided it is available from backend */ VIRTIO_API_FLAG_IN_ORDER = 16, /* enable in order support, provided it is available from backend */ + VIRTIO_API_FLAG_BUFFERING = 32 [backwards_compatible], /* enable buffering to handle backend jitter/delays */ }; /** \brief Initialize a new virtio pci interface with the given parameters |