Add header data split requirements for the receive packets.
Signed-off-by: Parav Pandit <>
---
net-workstream/features-1.4.md | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/net-workstream/features-1.4.md b/net-workstream/features-1.4.md
index 31aa587..7a56fa8 100644
--- a/net-workstream/features-1.4.md
+++ b/net-workstream/features-1.4.md
@@ -11,6 +11,7 @@ together is desired while updating the virtio net interface.
3. Virtqueue notification coalescing re-arming support
4 Virtqueue receive flow filters (RFF)
5. Device timestamp for tx and rx packets
+6. Header data split for the receive virtqueue
# 3. Requirements
## 3.1 Device counters
@@ -368,3 +369,15 @@ c. If/when virtio switch object is implemented, support ingress/egress flow
point of reception from the network.
3. The device should provide a receive packet timestamp in a single DMA
transaction along with the rest of the receive completion fields.
+
+## 3.6 Header data split for the receive virtqueue
+1. The device should be able to DMA the packet header and data to two different
+ memory locations, this enables driver and networking stack to perform zero
+ copy to application buffer(s).
+2. The driver should be able to configure maximum header buffer size per
+ virtqueue.
+3. The header buffer to be in a physically contiguous memory per virtqueue
+4. The device should be able to indicate header data split in the receive
+ completion.
+5. The device should be able to zero pad the header buffer when the received
+ header is shorter than cpu cache line size.
--
2.26.2
