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From: Marvin Liu <yong.liu@intel.com>
To: maxime.coquelin@redhat.com, xiaolong.ye@intel.com, zhihong.wang@intel.com
Cc: dev@dpdk.org,
Marvin Liu <yong.liu@intel.com>
Date: Wed, 29 Apr 2020 15:28:22 +0800
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Subject: [dpdk-dev] [PATCH v12 9/9] doc: add packed vectorized path
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Document packed virtqueue vectorized path selection logic in virtio net
PMD.
Signed-off-by: Marvin Liu <yong.liu@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
diff --git a/doc/guides/nics/virtio.rst b/doc/guides/nics/virtio.rst
index fdd0790e0..226f4308d 100644
--- a/doc/guides/nics/virtio.rst
+++ b/doc/guides/nics/virtio.rst
@@ -482,6 +482,13 @@ according to below configuration:
both negotiated, this path will be selected.
#. Packed virtqueue in-order non-mergeable path: If in-order feature is negotiated and
Rx mergeable is not negotiated, this path will be selected.
+#. Packed virtqueue vectorized Rx path: If building and running environment support
+ AVX512 && in-order feature is negotiated && Rx mergeable is not negotiated &&
+ TCP_LRO Rx offloading is disabled && vectorized option enabled,
+ this path will be selected.
+#. Packed virtqueue vectorized Tx path: If building and running environment support
+ AVX512 && in-order feature is negotiated && vectorized option enabled,
+ this path will be selected.
Rx/Tx callbacks of each Virtio path
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -504,6 +511,8 @@ are shown in below table:
Packed virtqueue non-meregable path virtio_recv_pkts_packed virtio_xmit_pkts_packed
Packed virtqueue in-order mergeable path virtio_recv_mergeable_pkts_packed virtio_xmit_pkts_packed
Packed virtqueue in-order non-mergeable path virtio_recv_pkts_packed virtio_xmit_pkts_packed
+ Packed virtqueue vectorized Rx path virtio_recv_pkts_packed_vec virtio_xmit_pkts_packed
+ Packed virtqueue vectorized Tx path virtio_recv_pkts_packed virtio_xmit_pkts_packed_vec
============================================ ================================= ========================
Virtio paths Support Status from Release to Release
@@ -521,20 +530,22 @@ All virtio paths support status are shown in below table:
.. table:: Virtio Paths and Releases
- ============================================ ============= ============= =============
- Virtio paths 16.11 ~ 18.05 18.08 ~ 18.11 19.02 ~ 19.11
- ============================================ ============= ============= =============
- Split virtqueue mergeable path Y Y Y
- Split virtqueue non-mergeable path Y Y Y
- Split virtqueue vectorized Rx path Y Y Y
- Split virtqueue simple Tx path Y N N
- Split virtqueue in-order mergeable path Y Y
- Split virtqueue in-order non-mergeable path Y Y
- Packed virtqueue mergeable path Y
- Packed virtqueue non-mergeable path Y
- Packed virtqueue in-order mergeable path Y
- Packed virtqueue in-order non-mergeable path Y
- ============================================ ============= ============= =============
+ ============================================ ============= ============= ============= =======
+ Virtio paths 16.11 ~ 18.05 18.08 ~ 18.11 19.02 ~ 19.11 20.05 ~
+ ============================================ ============= ============= ============= =======
+ Split virtqueue mergeable path Y Y Y Y
+ Split virtqueue non-mergeable path Y Y Y Y
+ Split virtqueue vectorized Rx path Y Y Y Y
+ Split virtqueue simple Tx path Y N N N
+ Split virtqueue in-order mergeable path Y Y Y
+ Split virtqueue in-order non-mergeable path Y Y Y
+ Packed virtqueue mergeable path Y Y
+ Packed virtqueue non-mergeable path Y Y
+ Packed virtqueue in-order mergeable path Y Y
+ Packed virtqueue in-order non-mergeable path Y Y
+ Packed virtqueue vectorized Rx path Y
+ Packed virtqueue vectorized Tx path Y
+ ============================================ ============= ============= ============= =======
QEMU Support Status
~~~~~~~~~~~~~~~~~~~
--
2.17.1