[PATCH v1] dts: automate VFIO-PCI modprobe

[PATCH v1] dts: automate VFIO-PCI modprobe

[Andrew Bailey]

Currently, users must modprobe vfio-pci before running DTS when using a
non-mellanox NIC. This patch automates the process on test run start up.

Signed-off-by: Andrew Bailey <abailey@iol.unh.edu>
---
 dts/framework/test_run.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dts/framework/test_run.py b/dts/framework/test_run.py
index ff0a12c9ce..38f9e6c07d 100644
--- a/dts/framework/test_run.py
+++ b/dts/framework/test_run.py
@@ -347,6 +347,10 @@ def next(self) -> State | None:
         test_run.ctx.dpdk.setup()
         test_run.ctx.topology.setup()
 
+        if test_run.ctx.sut_node.ports[0].config.os_driver_for_dpdk == "vfio-pci":
+            test_run.ctx.sut_node.main_session.send_command("modprobe vfio")
+            test_run.ctx.sut_node.main_session.send_command("modprobe vfio-pci")
+
         if test_run.config.use_virtual_functions:
             test_run.ctx.topology.instantiate_vf_ports()
 
-- 
2.50.1

Re: [PATCH v1] dts: automate VFIO-PCI modprobe

[Patrick Robb]

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I think there is a missing check for if ports is None (user is not
providing ports, trying to only run NO_LINKS tests).

On Fri, Nov 21, 2025 at 4:06 PM Andrew Bailey <abailey@iol.unh.edu> wrote:

> Currently, users must modprobe vfio-pci before running DTS when using a
> non-mellanox NIC. This patch automates the process on test run start up.
>
> Signed-off-by: Andrew Bailey <abailey@iol.unh.edu>
> ---
>  dts/framework/test_run.py | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/dts/framework/test_run.py b/dts/framework/test_run.py
> index ff0a12c9ce..38f9e6c07d 100644
> --- a/dts/framework/test_run.py
> +++ b/dts/framework/test_run.py
> @@ -347,6 +347,10 @@ def next(self) -> State | None:
>          test_run.ctx.dpdk.setup()
>          test_run.ctx.topology.setup()
>
> +        if test_run.ctx.sut_node.ports[0].config.os_driver_for_dpdk ==
> "vfio-pci":
> +            test_run.ctx.sut_node.main_session.send_command("modprobe
> vfio")
> +            test_run.ctx.sut_node.main_session.send_command("modprobe
> vfio-pci")
> +
>          if test_run.config.use_virtual_functions:
>              test_run.ctx.topology.instantiate_vf_ports()
>
> --
> 2.50.1
>
>

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[PATCH v2] dts: automate VFIO-PCI modprobe

[Andrew Bailey]

Currently, users must modprobe vfio-pci before running DTS when using a
non-mellanox NIC. This patch automates the process on test run start up.

Signed-off-by: Andrew Bailey <abailey@iol.unh.edu>
---
 dts/framework/test_run.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/dts/framework/test_run.py b/dts/framework/test_run.py
index ff0a12c9ce..9d7b6271c7 100644
--- a/dts/framework/test_run.py
+++ b/dts/framework/test_run.py
@@ -106,6 +106,7 @@
 from types import MethodType
 from typing import ClassVar, Protocol, Union
 
+from api.capabilities import LinkTopology
 from framework.config.test_run import TestRunConfiguration
 from framework.context import Context, init_ctx
 from framework.exception import InternalError, SkippedTestException, TestCaseVerifyError
@@ -347,6 +348,13 @@ def next(self) -> State | None:
         test_run.ctx.dpdk.setup()
         test_run.ctx.topology.setup()
 
+        if (
+            test_run.ctx.topology.type != LinkTopology.NO_LINK
+            and test_run.ctx.sut_node.ports[0].config.os_driver_for_dpdk == "vfio-pci"
+        ):
+            test_run.ctx.sut_node.main_session.send_command("modprobe vfio")
+            test_run.ctx.sut_node.main_session.send_command("modprobe vfio-pci")
+
         if test_run.config.use_virtual_functions:
             test_run.ctx.topology.instantiate_vf_ports()
 
-- 
2.50.1