<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div><span style="color: rgb(51, 51, 51); font-family: "PingFang SC", "Lantinghei SC", "Microsoft YaHei", arial, 宋体, sans-serif, tahoma; font-size: 16px;">Dear Madam/Sir：</span></div><div> I am new to DPDK and have some problems with<b> 'No probed ethernet devices' </b>and<b> 'Unable to parse device '0000:0b:00.0''</b></div><div> The environment is ：</div><div> cpu: Intel(R) Xeon(R) Gold 6254 CPU @ 3.10GHz</div><div> system: <b>VM EXSI7.02u + centos7.7</b></div><div> linux <a data-keyword="kernel">kernel： 4.19.237</a></div><div><a data-keyword="kernel"> </a>DPDK version: <b>dpdk-21.11</b></div><div> network card： <b> mellanox connextX-5 MCX512A</b> </div><div> drive: MLNX_OFED_LINUX-5.5-1.0.3.2-rhel7.7-x86_64</div><div> network config：<b>both The pass-through and SR_IOV</b></div><div><b><br></b></div><div> When I run <b>my own DPDK program</b> which was upgraded from DPDK version 19.08 to 21.11，<b>eal init reported error ：'No probed ethernet devices’ ，or 'Unable to parse device '0000:0b:00.0'' When I set up ‘-a 0000:0b:00.0’ </b></div><div> But when I run <b>app/dpdk-testpmd</b>， there is <b>no problem whether I set '-a 0b:00.0' or not</b>。</div><div> I compared the two programs，There is no difference before rte_eal_init() in main(). The parameters passed to DPDK are also consistent.</div><div> I query to that driver is mlx5_core. </div><div> My user program uses Makefile with：</div><div> PKGCONF = pkg-config</div><div> CFLAGS += -O2 $(shell $(PKGCONF) --cflags --static libdpdk)</div><div> LDFLAGS += $(shell $(PKGCONF) --libs --static libdpdk)</div><div style="text-align: justify;"> <span style="background-color: rgb(247, 248, 250); color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif;">How should this problem be solved？</span></div><div style="text-align: justify;"><span style="background-color: rgb(247, 248, 250); color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif;"> </span><span data-section="0" data-sentence="0" data-group="0-0" class="tgt" style="box-sizing: border-box; min-height: 26px; line-height: 26px; color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif; font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(247, 248, 250);">Is there any additional configuration for the DPDK user program before running the main() function?</span><span data-section="0" data-sentence="1" data-group="0-1" class="tgt" style="box-sizing: border-box; min-height: 26px; line-height: 26px; color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif; font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(247, 248, 250);"><span class="Apple-converted-space"> </span>Or maybe my compilation method doesn't meet the requirements for the MLX5 driver？</span></div><div><span data-section="0" data-sentence="1" data-group="0-1" class="tgt" style="box-sizing: border-box; min-height: 26px; line-height: 26px; color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif; font-variant-numeric: normal; font-variant-east-asian: normal; text-align: justify; background-color: rgb(247, 248, 250);"> </span></div><div><span data-section="0" data-sentence="1" data-group="0-1" class="tgt" style="box-sizing: border-box; min-height: 26px; line-height: 26px; color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif; font-variant-numeric: normal; font-variant-east-asian: normal; text-align: justify; background-color: rgb(247, 248, 250);"><br></span></div><div><span data-section="0" data-sentence="1" data-group="0-1" class="tgt" style="box-sizing: border-box; min-height: 26px; line-height: 26px; color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif; font-variant-numeric: normal; font-variant-east-asian: normal; text-align: justify; background-color: rgb(247, 248, 250);">More info：</span></div><div><span data-section="0" data-sentence="1" data-group="0-1" class="tgt" style="box-sizing: border-box; min-height: 26px; line-height: 26px; font-variant-numeric: normal; font-variant-east-asian: normal; text-align: justify; background-color: rgb(247, 248, 250);"><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">./dpdk-devbind.py -s</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">Network devices using kernel driver</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">===================================</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">0000:04:00.0 '82574L Gigabit Network Connection 10d3' if=ens161 drv=e1000e unused= *Active*</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">0000:0b:00.0 'MT27800 Family [ConnectX-5] 1017' if=ens192 drv=mlx5_core unused= *Active*</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">0000:0c:00.0 'MT27800 Family [ConnectX-5 Virtual Function] 1018' if=ens193 drv=mlx5_core unused= </font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">0000:13:00.0 'MT27800 Family [ConnectX-5 Virtual Function] 1018' if=ens224 drv=mlx5_core unused= *Active*</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">0000:1b:00.0 'MT27800 Family [ConnectX-5 Virtual Function] 1018' if=ens256 drv=mlx5_core unused= *Active*</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">No 'Baseband' devices detected</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">==============================</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">No 'Crypto' devices detected</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">============================</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">No 'DMA' devices detected</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">=========================</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">No 'Eventdev' devices detected</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">==============================</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">No 'Mempool' devices detected</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">=============================</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">No 'Compress' devices detected</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">==============================</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">No 'Misc (rawdev)' devices detected</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">===================================</font></div><div style=""><font color="#333333" face="tahoma, Microsoft YaHei, 微软雅黑, 宋体, Malgun Gothic, sans-serif">No 'Regex' devices detected</font></div><div style="color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif;"><br></div></span></div><div><span data-section="0" data-sentence="1" data-group="0-1" class="tgt" style="box-sizing: border-box; min-height: 26px; line-height: 26px; color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif; font-variant-numeric: normal; font-variant-east-asian: normal; text-align: justify; background-color: rgb(247, 248, 250);"> </span></div><div><span data-section="0" data-sentence="1" data-group="0-1" class="tgt" style="box-sizing: border-box; min-height: 26px; line-height: 26px; color: rgb(51, 51, 51); font-family: tahoma, "Microsoft YaHei", 微软雅黑, 宋体, "Malgun Gothic", sans-serif; font-variant-numeric: normal; font-variant-east-asian: normal; text-align: justify; background-color: rgb(247, 248, 250);"> </span></div><div><span style="background-color: rgb(247, 248, 250); color: rgb(145, 149, 153); font-family: "Microsoft YaHei", Arial, 微软雅黑, 宋体, "Malgun Gothic", Meiryo, sans-serif; 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