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<p class="MsoNormal">Hi Krishnakumar:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m not an expert on SGX, but as I know there are many limitations to running code in the SGX enclave due to security considerations. usually, the DMA should be setup outside of the SGX, so I guess you should not run rte_eal_init within
SGX.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards<o:p></o:p></p>
<p class="MsoNormal">Qi<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Sudharshan Krishnakumar <sudhar.ckrishna@gmail.com>
<br>
<b>Sent:</b> Saturday, March 5, 2022 5:38 AM<br>
<b>To:</b> dev@dpdk.org; users@dpdk.org; Yang, Qiming <qiming.yang@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com><br>
<b>Subject:</b> regarding Intel E810<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hi All,<o:p></o:p></p>
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<p class="MsoNormal">I am using Intel E810 with DPDK v20.11, with ethernet ports bound to DPDK(vfio-pci). <o:p></o:p></p>
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<p class="MsoNormal">Running DPDK software libraries within a secure-enclave(Intel SGX technology) sandbox environment,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">and running into an issue during rte_eal_init invocation.<o:p></o:p></p>
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<p class="MsoNormal">During launch of DPDK application(examples/packet_ordering), when rte_eal_init gets called, <o:p></o:p></p>
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<p class="MsoNormal">it results in a probe of ethernet devices,which invokes ICE(Intel E810 NIC) Poll-Mode-Driver(PMD) apis.<o:p></o:p></p>
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<p class="MsoNormal"><br>
When ICE PMD driver sends command to NIC(Network Interface Card),to get firmware version, <o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">it times out in this api-> ice_sq_send_cmd_nolock().<o:p></o:p></p>
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<p class="MsoNormal">Question-> Can someone point me to any Intel documentation for E810, <o:p></o:p></p>
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<p class="MsoNormal">that describes how ICE PMD(or any software driver) can communicate with E810 NIC's firmware,<o:p></o:p></p>
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<p class="MsoNormal">like what registers to write the command, and how to check for the response from firmware.<o:p></o:p></p>
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<p class="MsoNormal"><br>
Question-> Also, is there any other alternate way(other than ethtool), to check if firmware received the command,<o:p></o:p></p>
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<p class="MsoNormal">and what was the status of the last command processed by firmware. <o:p></o:p></p>
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<p class="MsoNormal">Note: Even if there is a way to check firmware command status thro ethtool, <o:p></o:p></p>
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<p class="MsoNormal">I cant use ethtool,since ports are bound to DPDK.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks,<br>
Sudha<o:p></o:p></p>
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