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<base href="https://bugs.dpdk.org/">
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<body><table border="1" cellspacing="0" cellpadding="8" class="bz_new_table">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - iavf pmd vlan Issue: dpdk-22.11.0"
href="https://bugs.dpdk.org/show_bug.cgi?id=1725">1725</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>iavf pmd vlan Issue: dpdk-22.11.0
</td>
</tr>
<tr>
<th>Product</th>
<td>DPDK
</td>
</tr>
<tr>
<th>Version</th>
<td>22.11
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>UNCONFIRMED
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Priority</th>
<td>Normal
</td>
</tr>
<tr>
<th>Component</th>
<td>ethdev
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dev@dpdk.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>amiyaranjan.mohakud@gmail.com
</td>
</tr>
<tr>
<th>Target Milestone</th>
<td>---
</td>
</tr></table>
<p>
<div class="bz_comment_block">
<pre class="bz_comment_text">Hi All,
I'm encountering an issue with XL710 SR-IOV on KVM for VLAN packets with
DPDK-22.11.0 version.
Issue Description: I have disabled RTE_ETH_RX_OFFLOAD_VLAN_STRIP in
rte_eth_conf and calling rte_eth_dev_configure and expecting my dpdk
application to receive the packets with vlan tags. Later I added some vlans
using rte_eth_dev_vlan_filter() and I see that the vlan is getting stripped off
for the incoming packets.
Setup Details:(KVM SR-IOV)
KVM Host: Ubuntu 20.04.6 LTS: kernel version: 5.4.0-216-generic #236-Ubuntu
NIC: XL710
3b:00.0 Ethernet controller: Intel Corporation Ethernet Controller XL710 for
40GbE QSFP+ (rev 02)
3b:00.1 Ethernet controller: Intel Corporation Ethernet Controller XL710 for
40GbE QSFP+ (rev 02)
i40e PF Driver: Out of tree 2.20.12
Firmware: 9.00/9.40
DPDK Version: 22.11.0
Observation/Analysis:
I could see that even after disabling RTE_ETH_RX_OFFLOAD_VLAN_STRIP offload
flag, when I receive the packets, the mbuf offload flags (RTE_MBUF_F_RX_VLAN |
RTE_MBUF_F_RX_VLAN_STRIPPED) are set inside the mbuf. This confirms that the
driver is stripping off the vlans.
I tried with recommended PF driver version for DPDK-22.11.0 as per
<a href="https://mails.dpdk.org/archives/dev/2023-November/281700.html">https://mails.dpdk.org/archives/dev/2023-November/281700.html</a> and DPDK-22.11
release note <a href="https://doc.dpdk.org/guides/rel_notes/release_22_11.html">https://doc.dpdk.org/guides/rel_notes/release_22_11.html</a>. Still it
did not help.
Intel® Ethernet Converged Network Adapter XL710-QDA2 (2X40G)
Firmware version(PF): 9.00 0x8000ce86 1.3179.0
Device id (pf/vf): 8086:1583 / 8086:154c
Driver version(out-tree): 2.20.12 (i40e)
Driver version(in-tree): 5.15.0-46-generic (i40e)
Upon debugging further, I came across a DPDK commit:
<a href="https://github.com/DPDK/dpdk/commit/e25c7ed114b296ddaa583427824acc30bcf9c85d">https://github.com/DPDK/dpdk/commit/e25c7ed114b296ddaa583427824acc30bcf9c85d</a>
which says it sets the vlan_strip on in PF when we set vlan filter on VF.
I picked the fix, but still it did not help.
Later when I debugged further, I found that the vf_cap_flags is set to
VIRTCHNL_VF_OFFLOAD_VLAN_V2 for the above PF driver and still it sets the
vlan_strip on. I extended the dpdk commit for the VIRTCHNL_VF_OFFLOAD_VLAN_V2
case which fixed the issue.
I just want to know if it's a known issue for the VIRTCHNL_VF_OFFLOAD_VLAN_V2
case. I understand it's a known issue for VIRTCHNL_VF_OFFLOAD_VLAN_V1 and dpdk
has a fix for it.
Do we need to add the fix for VIRTCHNL_VF_OFFLOAD_VLAN_V2 as well. Can we
mainstream it? If yes, please let me know so that I can raise a pull request
for it, if required.
Regards
Amiya
</pre>
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