[dpdk-dev] testpmd could not start up with vmxnet3 port

[Xu, Qian Q]

It's a regression, vmxnet3 can work with dpdk2.2, but now it can't work well.
Yong,
Heng found that your patch may be the first one to break the function, could you check it? Thx.

Thanks
Qian

From: Ding, HengX
Sent: Wednesday, March 23, 2016 11:28 AM
To: yongwang at vmware.com
Cc: Xu, Qian Q; dev at dpdk.org
Subject: testpmd could not start up with vmxnet3 port

Testpmd will fail to start up with vmxnet3 port. You can reproduce this issue follow these steps:


1.       Right click your VM and click edit settings

2.       Click "Add..." button.

3.       Choose Ethernet Adapter and click next

4.       Choose vmxnet3 as the Adapter Type, and select a network connection. Click next and finish config.

5.       Add another vmxnet3 port to VM follow step 1-4.

6.       Compile dpdk, bind vmxnet3 port to igb_uio and run testpmd: ./x86_64-native-linuxapp-gcc/app/testpmd -c f -n 4 -- -i


Here is the  bisect result:
f598fd063bb17eba9310ff48164014d09f40c759 is the first bad commit
commit f598fd063bb17eba9310ff48164014d09f40c759
Author: Yong Wang <yongwang at vmware.com<mailto:yongwang at vmware.com>>
Date:   Tue Jan 12 18:08:35 2016 -0800

    vmxnet3: add Tx L4 checksum offload

    Support TCP/UDP checksum offload.

    Signed-off-by: Yong Wang <yongwang at vmware.com<mailto:yongwang at vmware.com>>
    Acked-by: Stephen Hemminger <stephen at networkplumber.org<mailto:stephen at networkplumber.org>>

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:040000 040000 ad9cd888717dd976a43cfe05aaf33f3b83a2f7bc 9fbd6fefb95f67bb407bb9a7efcf39e707ab21a7 M      drivers