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/pci.h | |
| 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/pci.h')
| -rw-r--r-- | src/vnet/devices/virtio/pci.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/vnet/devices/virtio/pci.h b/src/vnet/devices/virtio/pci.h index ab5c6f15ec2..10df49c66c9 100644 --- a/src/vnet/devices/virtio/pci.h +++ b/src/vnet/devices/virtio/pci.h @@ -214,7 +214,8 @@ typedef struct _virtio_pci_func _ (CSUM_OFFLOAD, 1) \ _ (GRO_COALESCE, 2) \ _ (PACKED, 3) \ - _ (IN_ORDER, 4) + _ (IN_ORDER, 4) \ + _ (BUFFERING, 5) typedef enum { @@ -234,6 +235,7 @@ typedef struct u64 features; u8 gso_enabled; u8 checksum_offload_enabled; + u32 buffering_size; u32 virtio_flags; clib_error_t *error; } virtio_pci_create_if_args_t; |