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From: Staffan Wiklund <staffan491@gmail.com>
To: users <users@dpdk.org>
Subject: How to use DPDK memif between Docker container and native Linux application?
Date: Wed, 16 Feb 2022 10:19:02 +0100
Message-ID: <CAAV4wTjT03dBJmVPLKWrPjrnv3pETUzfpH13GaS8z8SUtAdoVw@mail.gmail.com> (raw)

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Hello

I wonder if it is possible for a DPDK application using the memif feature
to communicate with a native Linux application?

I have tried to create a Docker container and start the image by:
docker run -ti --privileged -v "/mnt/huge:/mnt/huge" -v "/var/run:/var/run"
-v "/tmp:/tmp" -v "/run:/run" -v "/sys:/sys" -v "/dev:/dev" testpmd
/bin/bash

In this container I start the dpdk-testpmd application in server mode by:
./dpdk-testpmd -l 1-2  --no-pci  --proc-type=primary --file-prefix=td1
--vdev=net_memif,role=server,mac=00:00:00:00:00:01 -- -i

From a UNIX shell in the same server I start the dpdk-testpmd in client
mode:
sudo ./dpdk-testpmd -l 3-4  --no-pci --proc-type=primary --file-prefix=td2
--vdev=net_memif,zero-copy=yes,mac=00:00:00:00:00:02 --single-file-segments
-- -i

This results in the following error message on the client side:
. . .
Configuring Port 0 (socket 0)
memif_connect_client(): Failed to connect socket: /run/memif.sock.
Fail to start port 0
. . .

If I start both sides in a UNIX shell, the client can connect to the server.
Do you know what can be the fault when executing in a Docker container and
in a UNIX shell for communication using the DPDK memif feature?

Thanks
Staffan

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             reply	other threads:[~2022-02-16  9:19 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-16  9:19 Staffan Wiklund [this message]
2022-02-16 18:46 ` Stephen Hemminger
2022-02-16 19:09   ` Staffan Wiklund

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