[dpdk-dev] VMXNET3 PMD

[dpdk-dev] VMXNET3 PMD

[Aravamudan Srivathsan]

Hi

We are developing DPDK based app in VMWARE EXSI 6.0. We have 1 G card configured as VMXNET3 device. With 16.07 dpdk unmodified the system reboots when binding the igb_uio driver to the PCI device.
I followed the following guide.
                http://dpdk.org/doc/guides/_images/vmxnet3_int.png
                http://dpdk.org/doc/guides/nics/vmxnet3.html
I could not get any logs as the system hangs once the igb driver is loaded.
Please point me to the right direction for debugging the issue.

Srivatshan

[dpdk-dev] Vmxnet3 pmd

[Alex Markuze]

Hi, I Have a simple dpdk app - basically a KNI interface with the dpdk
layer serving only as a pipeline.

This allows me to ping between vEth0 on different VM's works great with ixgbevf.
Now I moved to ESXi5.5 , Ubuntu14.4 VM (Dpdk 1.7).
When running the same code*  I've discovered that the polling doesn't
retrieve any packets after vEth0 gents an IP. I've resolved this issue
by removing the dev restart calls I had in the callback.

        //      rte_eth_dev_stop(port_id);
        //      ret = rte_eth_dev_start(port_id);

Is this a know issue? how can I report a BUG if its not.

Thanks
Alex.

*Except this line I needed to add to setup the TXQ.
tx_conf.txq_flags |= (ETH_TXQ_FLAGS_NOMULTSEGS | ETH_TXQ_FLAGS_NOOFFLOADS);

Re: [dpdk-dev] Vmxnet3 pmd

[Patel, Rashmin N]

Hi Alex,

This is known issue with dev_stop of vmxnet3_pmd. Vmxnet3_cmd_ring_release() routine calls rte_free(ring->buf_info), which should be reused instead. Because it's not being reallocated at dev_start, otherwise reallocation is needed. I've a patch that works for me, I'll submit it after some testing.

Thanks,
Rashmin

-----Original Message-----
From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Alex Markuze
Sent: Wednesday, August 13, 2014 3:14 AM
To: dev@dpdk.org
Subject: [dpdk-dev] Vmxnet3 pmd

Hi, I Have a simple dpdk app - basically a KNI interface with the dpdk layer serving only as a pipeline.

This allows me to ping between vEth0 on different VM's works great with ixgbevf.
Now I moved to ESXi5.5 , Ubuntu14.4 VM (Dpdk 1.7).
When running the same code*  I've discovered that the polling doesn't retrieve any packets after vEth0 gents an IP. I've resolved this issue by removing the dev restart calls I had in the callback.

        //      rte_eth_dev_stop(port_id);
        //      ret = rte_eth_dev_start(port_id);

Is this a know issue? how can I report a BUG if its not.

Thanks
Alex.

*Except this line I needed to add to setup the TXQ.
tx_conf.txq_flags |= (ETH_TXQ_FLAGS_NOMULTSEGS | ETH_TXQ_FLAGS_NOOFFLOADS);