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+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2010-2015 Intel Corporation.
Poll Mode Driver for Emulated Virtio NIC
========================================
Vector callbacks will be used when:
-* ``txq_flags`` is set to ``VIRTIO_SIMPLE_FLAGS`` (0xF01), which implies:
+* ``txmode.offloads`` is set to ``0x0``, which implies:
* Single segment is specified.
Example of using the vector version of the virtio poll mode driver in
``testpmd``::
- testpmd -l 0-2 -n 4 -- -i --txqflags=0xF01 --rxq=1 --txq=1 --nb-cores=1
+ testpmd -l 0-2 -n 4 -- -i --tx-offloads=0x0 --rxq=1 --txq=1 --nb-cores=1
Interrupt mode
$ l3fwd-power -l 0-1 -- -p 1 -P --config="(0,0,1)" \
--no-numa --parse-ptype
+
+
+Virtio PMD arguments
+--------------------
+
+The user can specify below argument in devargs.
+
+#. ``vdpa``:
+
+ A virtio device could also be driven by vDPA (vhost data path acceleration)
+ driver, and works as a HW vhost backend. This argument is used to specify
+ a virtio device needs to work in vDPA mode.
+ (Default: 0 (disabled))
+
+#. ``mrg_rxbuf``:
+
+ It is used to enable virtio device mergeable Rx buffer feature.
+ (Default: 1 (enabled))
+
+#. ``in_order``:
+
+ It is used to enable virtio device in-order feature.
+ (Default: 1 (enabled))