X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fnics%2Fvirtio.rst;h=2ae875cb49c5ae8e92dc1717805a0e3ebd889fc0;hb=d67e6ecf46e25832c4b24dba76c0a9dcd3e0dc84;hp=46e292c4d354aa90b8789b978ad5f66fb0a134d1;hpb=488ed97a20c7e12f87dfb08c4cb82cbae811b21e;p=dpdk.git

diff --git a/doc/guides/nics/virtio.rst b/doc/guides/nics/virtio.rst
index 46e292c4d3..2ae875cb49 100644
--- a/doc/guides/nics/virtio.rst
+++ b/doc/guides/nics/virtio.rst
@@ -47,7 +47,7 @@ In this release, the virtio PMD driver provides the basic functionality of packe
 *   The descriptor number for the Rx/Tx queue is hard-coded to be 256 by qemu 2.7 and below.
     If given a different descriptor number by the upper application,
     the virtio PMD generates a warning and fall back to the hard-coded value.
-    Rx queue size can be configureable and up to 1024 since qemu 2.8 and above. Rx queue size is 256
+    Rx queue size can be configurable and up to 1024 since qemu 2.8 and above. Rx queue size is 256
     by default. Tx queue size is still hard-coded to be 256.
 
 *   Features of mac/vlan filter are supported, negotiation with vhost/backend are needed to support them.
@@ -201,7 +201,7 @@ The packet transmission flow is:
 Virtio PMD Rx/Tx Callbacks
 --------------------------
 
-Virtio driver has 3 Rx callbacks and 2 Tx callbacks.
+Virtio driver has 4 Rx callbacks and 3 Tx callbacks.
 
 Rx callbacks:
 
@@ -215,6 +215,9 @@ Rx callbacks:
    Vector version without mergeable Rx buffer support, also fixes the available
    ring indexes and uses vector instructions to optimize performance.
 
+#. ``virtio_recv_mergeable_pkts_inorder``:
+   In-order version with mergeable Rx buffer support.
+
 Tx callbacks:
 
 #. ``virtio_xmit_pkts``:
@@ -223,6 +226,8 @@ Tx callbacks:
 #. ``virtio_xmit_pkts_simple``:
    Vector version fixes the available ring indexes to optimize performance.
 
+#. ``virtio_xmit_pkts_inorder``:
+   In-order version.
 
 By default, the non-vector callbacks are used:
 
@@ -254,6 +259,12 @@ Example of using the vector version of the virtio poll mode driver in
 
    testpmd -l 0-2 -n 4 -- -i --tx-offloads=0x0 --rxq=1 --txq=1 --nb-cores=1
 
+In-order callbacks only work on simulated virtio user vdev.
+
+*   For Rx: If mergeable Rx buffers is enabled and in-order is enabled then
+    ``virtio_xmit_pkts_inorder`` is used.
+
+*   For Tx: If in-order is enabled then ``virtio_xmit_pkts_inorder`` is used.
 
 Interrupt mode
 --------------