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<p class="xxxxmsonormal"><span style="color:#4472C4">Hi,</span><o:p></o:p></p>
<p class="xxxxmsonormal"><span style="color:#4472C4"> </span><o:p></o:p></p>
<p class="xxxxmsonormal"><span style="color:#4472C4">Can you please share the motivation of not filling l2/l3-len fields on PMD’s RX function?</span><o:p></o:p></p>
<p class="xxxxmsonormal"><span style="color:#4472C4">PMD already filling the mbuf with parsing info, and the l2/l3-len are also probably part of the HW descriptor, so why no propagate them as well?<o:p></o:p></span></p>
<p class="xmsonormal"><span style="color:#4472C4">The current way for application to find the l2_len (for example) is to examine the ptype using multiple if statement.<o:p></o:p></span></p>
<p class="xmsonormal"><span style="color:#4472C4">However, this may not always work if there are unknown/user headers (e.g. DSA header).<br>
in addition, some of the examples are not checking the ptype and assumes a specific packet structure.<br>
e.g. l3-fwd, assumes only ethernet header exist and hardcoded jump by 14B to access the IP header.<br>
but if VLAN exist it will fail.<o:p></o:p></span></p>
<p class="xmsonormal"><span style="color:#4472C4">checking the l2_len will work in any case.</span><o:p></o:p></p>
<p class="xxxxmsonormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#4472C4">Regards,<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Liron Himi</span></b><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><br>
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