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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal">I’m trying to configure <b>Layer 1 attributes</b> (speed, duplex, and autonegotiation) for
<b>Intel i225 interfaces</b> in both kernel and DPDK modes, and I’ve run into some issues.<o:p></o:p></p>
<p class="MsoNormal">In <b>kernel driver mode</b>, I normally use: “ethtool -s eth5 speed 100 duplex half autoneg off”.<o:p></o:p></p>
<p class="MsoNormal">However, this results in the kernel message: “igc 0000:04:00.0 eth5: Force mode currently not supported”.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When the interface is <b>bound to DPDK</b> and connected to an
<b>OVS bridge</b>, I configure it like this:<o:p></o:p></p>
<p class="MsoNormal">ovs-vsctl set Interface 1.extra2 \<o:p></o:p></p>
<p class="MsoNormal"> type=dpdk \<o:p></o:p></p>
<p class="MsoNormal"> options:dpdk-devargs=0000:04:00.0 \<o:p></o:p></p>
<p class="MsoNormal"> options:dpdk-speed=100 \<o:p></o:p></p>
<p class="MsoNormal"> options:dpdk-autoneg=false \<o:p></o:p></p>
<p class="MsoNormal"> options:dpdk-duplex=half<o:p></o:p></p>
<p class="MsoNormal">This should pass the speed/autoneg/duplex settings to the igc DPDK driver via devargs.<o:p></o:p></p>
<p class="MsoNormal">However, it appears these options are <b>not applied</b> — the interface continues to negotiate its settings as usual, and I can’t find any code in the igc DPDK driver that processes these devargs parameters.<o:p></o:p></p>
<p class="MsoNormal"><b>Is support for forced speed/duplex/autoneg available at all for i225 in DPDK (or even kernel) mode?</b> Or is this a hardware limitation?<o:p></o:p></p>
<p class="MsoNormal">Any insight, documentation pointers, or confirmation of support status especially in case of DPDK mode would be greatly appreciated.<o:p></o:p></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal"><span lang="en-BE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="en-BE"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:#335E79;mso-ligatures:none;mso-fareast-language:#2000">Renata Saiakhova<br>
</span></b><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:#335E79;mso-ligatures:none;mso-fareast-language:#2000">SW ARCHITECT<br>
<a href="mailto:renata.saiakhova@ekinops.com%20"><span style="font-size:7.5pt;color:#335E79">renata.saiakhova@ekinops.com</span></a>
<br>
</span><span style="font-size:8.5pt;font-family:"Century Gothic",sans-serif;color:#335E79;mso-ligatures:none;mso-fareast-language:#2000">Tel: +32 16 799 970
</span><span style="font-size:9.0pt;font-family:"Century Gothic",sans-serif;color:#335E79;mso-ligatures:none;mso-fareast-language:#2000"><o:p></o:p></span></p>
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