[dpdk-dev] [PATCH v4 4/4] net/virtio-user: adding link speed devarg

[Ivan Dyukov]

virtio driver already parses speed devarg. virtio-user should add
it to list of valid devargs and call eth_virtio_dev_init function
which init speed value.

eth_virtio_dev_init already is called from virtio_user_pmd_probe
function. The only change is required to enable speed devargs:
adding speed to list of valid devargs.

Signed-off-by: Ivan Dyukov <i.dyu...@samsung.com>
---
 doc/guides/nics/virtio.rst              | 8 ++++++++
 drivers/net/virtio/virtio_user_ethdev.c | 5 ++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/doc/guides/nics/virtio.rst b/doc/guides/nics/virtio.rst
index 0341907ef..6286286db 100644
--- a/doc/guides/nics/virtio.rst
+++ b/doc/guides/nics/virtio.rst
@@ -410,6 +410,14 @@ Below devargs are supported by the virtio-user vdev:
     It is used to enable virtio device packed virtqueue feature.
     (Default: 0 (disabled))
 
+#.  ``speed``:
+
+    It is used to specify link speed of virtio device. Link speed is a part of
+    link status structure. It could be requested by application using
+    rte_eth_link_get_nowait function.
+    (Default: 10000 (10G))
+
+
 Virtio paths Selection and Usage
 --------------------------------
 
diff --git a/drivers/net/virtio/virtio_user_ethdev.c 
b/drivers/net/virtio/virtio_user_ethdev.c
index 074527714..45c1541c5 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -406,6 +406,8 @@ static const char *valid_args[] = {
        VIRTIO_USER_ARG_IN_ORDER,
 #define VIRTIO_USER_ARG_PACKED_VQ      "packed_vq"
        VIRTIO_USER_ARG_PACKED_VQ,
+#define VIRTIO_USER_ARG_SPEED          "speed"
+       VIRTIO_USER_ARG_SPEED,
        NULL
 };
 
@@ -738,4 +740,5 @@ RTE_PMD_REGISTER_PARAM_STRING(net_virtio_user,
        "server=<0|1> "
        "mrg_rxbuf=<0|1> "
        "in_order=<0|1> "
-       "packed_vq=<0|1>");
+       "packed_vq=<0|1> "
+       "speed=<int>");
-- 
2.17.1