summaryrefslogtreecommitdiffstats
path: root/src/vnet/devices/virtio/pci.h
diff options
context:
space:
mode:
authorMohsin Kazmi <sykazmi@cisco.com>2020-09-28 10:26:33 +0000
committerBeno�t Ganne <bganne@cisco.com>2020-09-28 16:47:30 +0000
commite347acbc31111504c015531e8ad764a86d489309 (patch)
tree3a72d961fd97b9ce7985865d89b0c45d27cab2fc /src/vnet/devices/virtio/pci.h
parent7741afaf5c66a5d7ed1d2d76ae36a81ec24fdaaa (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.h4
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;