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[Qemu-devel] [RFC Patch v2 01/10] virtio-net rsc: Data structure, 'Segm
From: |
wexu |
Subject: |
[Qemu-devel] [RFC Patch v2 01/10] virtio-net rsc: Data structure, 'Segment', 'Chain' and 'Status' |
Date: |
Mon, 1 Feb 2016 02:13:20 +0800 |
From: Wei Xu <address@hidden>
Segment is the coalesced packets in a connection.
Status is to indicate the status while do coalescing, such as if a
packet is bypassed or coalesced, etc.
Chain is used to save the segments of different protocols in a VirtIONet
instance.
A timer is used in a chain to help purging the buffer/coalesced packets.
Signed-off-by: Wei Xu <address@hidden>
---
include/hw/virtio/virtio.h | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 205fadf..1383220 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -127,6 +127,38 @@ typedef struct VirtioDeviceClass {
int (*load)(VirtIODevice *vdev, QEMUFile *f, int version_id);
} VirtioDeviceClass;
+/* Coalesced packets type & status */
+typedef enum {
+ RSC_COALESCE, /* Data been coalesced */
+ RSC_FINAL, /* Will terminate current connection */
+ RSC_NO_MATCH, /* No matched in the buffer pool */
+ RSC_BYPASS, /* Packet to be bypass, not tcp, tcp ctrl, etc */
+ RSC_WANT /* Data want to be coalesced */
+} COALESCE_STATUS;
+
+/* Coalesced segmant */
+typedef struct NetRscSeg {
+ QTAILQ_ENTRY(NetRscSeg) next;
+ void *buf;
+ size_t size;
+ uint32_t dup_ack_count;
+ bool is_coalesced; /* need recal ipv4 header checksum, mark here */
+ NetClientState *nc;
+} NetRscSeg;
+
+/* Receive callback for ipv4/6 */
+typedef size_t (VirtioNetReceive) (void *,
+ NetClientState *, const uint8_t *, size_t);
+
+/* Chain is divided by protocol(ipv4/v6) and NetClientInfo */
+typedef struct NetRscChain {
+ QTAILQ_ENTRY(NetRscChain) next;
+ uint16_t proto;
+ VirtioNetReceive *do_receive;
+ QEMUTimer *drain_timer;
+ QTAILQ_HEAD(, NetRscSeg) buffers;
+} NetRscChain;
+
void virtio_instance_init_common(Object *proxy_obj, void *data,
size_t vdev_size, const char *vdev_name);
--
2.4.0
- [Qemu-devel] [RFC v2 0/10] Support Receive-Segment-Offload(RSC) for WHQL test of Window guest, wexu, 2016/01/31
- [Qemu-devel] [RFC Patch v2 01/10] virtio-net rsc: Data structure, 'Segment', 'Chain' and 'Status',
wexu <=
- [Qemu-devel] [RFC Patch v2 02/10] virtio-net rsc: Initilize & Cleanup, wexu, 2016/01/31
- [Qemu-devel] [RFC Patch v2 04/10] virtio-net rsc: Detailed IPv4 and General TCP data coalescing, wexu, 2016/01/31
- [Qemu-devel] [RFC Patch v2 03/10] virtio-net rsc: Chain Lookup, Packet Caching and Framework of IPv4, wexu, 2016/01/31
- [Qemu-devel] [RFC Patch v2 05/10] virtio-net rsc: Create timer to drain the packets from the cache pool, wexu, 2016/01/31
- [Qemu-devel] [RFC Patch v2 06/10] virtio-net rsc: IPv4 checksum, wexu, 2016/01/31