Add interrupt_coalesce config in send_queue and receive_queue to cache user config. Send per virtqueue interrupt moderation config to underlying device in order to have more efficient interrupt moderation and cpu utilization of guest VM. Additionally, address all the VQs when updating the global configuration, as now the individual VQs configuration can diverge from the global configuration.
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| @@ -56,6 +56,7 @@ · 55 unmodified lines | |||
| 56 | #define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow | 56 | #define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow |
| 57 | * Steering */ | 57 | * Steering */ |
| 58 | #define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ | 58 | #define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ |
| 59 | #define VIRTIO_NET_F_VQ_NOTF_COAL 52 /* Device supports virtqueue notification coalescing */ | ||
| 59 | #define VIRTIO_NET_F_NOTF_COAL 53 /* Device supports notifications coalescing */ | 60 | #define VIRTIO_NET_F_NOTF_COAL 53 /* Device supports notifications coalescing */ |
| 60 | #define VIRTIO_NET_F_GUEST_USO4 54 /* Guest can handle USOv4 in. */ | 61 | #define VIRTIO_NET_F_GUEST_USO4 54 /* Guest can handle USOv4 in. */ |
| 61 | #define VIRTIO_NET_F_GUEST_USO6 55 /* Guest can handle USOv6 in. */ | 62 | #define VIRTIO_NET_F_GUEST_USO6 55 /* Guest can handle USOv6 in. */ |
| @@ -391,5 +392,18 @@ struct virtio_net_ctrl_coal_rx { · 329 unmodified lines | |||
| 391 | }; | 392 | }; |
| 392 | 393 | ||
| 393 | #define VIRTIO_NET_CTRL_NOTF_COAL_RX_SET 1 | 394 | #define VIRTIO_NET_CTRL_NOTF_COAL_RX_SET 1 |
| 395 | #define VIRTIO_NET_CTRL_NOTF_COAL_VQ_SET 2 | ||
| 396 | #define VIRTIO_NET_CTRL_NOTF_COAL_VQ_GET 3 | ||
| 397 | |||
| 398 | struct virtio_net_ctrl_coal { | ||
| 399 | __le32 max_packets; | ||
| 400 | __le32 max_usecs; | ||
| 401 | }; | ||
| 402 | |||
| 403 | struct virtio_net_ctrl_coal_vq { | ||
| 404 | __le16 vqn; | ||
| 405 | __le16 reserved; | ||
| 406 | struct virtio_net_ctrl_coal coal; | ||
| 407 | }; | ||
| 394 | 408 | ||
| 395 | #endif /* _UAPI_LINUX_VIRTIO_NET_H */ | 409 | #endif /* _UAPI_LINUX_VIRTIO_NET_H */ |