<div dir="ltr"><div>Hello Dan,</div><div><br></div><div>First of all Happy new year and thanks for the reply.</div><div>On further debugging it looks like we need a "rmnet" driver for  Netlink creation as slice interfaces.</div><div><a class="gmail-Hyperlink gmail-SCXO158234188 gmail-BCX0" href="https://dri.freedesktop.org/docs/drm/networking/device_drivers/cellular/qualcomm/rmnet.html" target="_blank" rel="noreferrer noopener" style="margin:0px;padding:0px;font-family:"Segoe UI","Segoe UI Web",Arial,Verdana,sans-serif;font-size:12px"><span class="gmail-TextRun gmail-SCXO158234188 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;font-size:11pt;font-family:Calibri,sans-serif;line-height:19.55px;font-variant-ligatures:none"><span class="gmail-NormalTextRun gmail-SCXO158234188 gmail-BCX0" style="margin:0px;padding:0px;background-color:inherit">https://dri.freedesktop.org/docs/drm/networking/device_drivers/cellular/qualcomm/rmnet.html</span></span></a><span class="gmail-TextRun gmail-SCXO158234188 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;color:windowtext;font-size:11pt;font-family:Calibri,sans-serif;line-height:19.55px;font-variant-ligatures:none"><span class="gmail-NormalTextRun gmail-SCXO158234188 gmail-BCX0" style="margin:0px;padding:0px;background-color:inherit"> </span></span><span class="gmail-EOP gmail-SCXO158234188 gmail-BCX0" style="margin:0px;padding:0px;color:windowtext;font-size:11pt;line-height:19.55px;font-family:Calibri,sans-serif">  </span></div><div>However Native Opernwrt -23.05 didn't had this module as part of packages, so i had to compile it as a module</div><div>Kernel : 5.15.168</div><div><br></div><div><span class="gmail-EOP gmail-SCXO158234188 gmail-BCX0" style="margin:0px;padding:0px;color:windowtext;font-size:11pt;line-height:19.55px;font-family:Calibri,sans-serif"><br></span></div><div><span class="gmail-EOP gmail-SCXO158234188 gmail-BCX0" style="margin:0px;padding:0px;color:windowtext;font-size:11pt;line-height:19.55px;font-family:Calibri,sans-serif">I followed these steps </span></div><div><span class="gmail-EOP gmail-SCXO158234188 gmail-BCX0" style="margin:0px;padding:0px;color:windowtext;font-size:11pt;line-height:19.55px;font-family:Calibri,sans-serif">-</span><span class="gmail-TextRun gmail-SCXO148205415 gmail-BCX0" lang="EN-US" style="background-color:transparent;color:windowtext;margin:0px;padding:0px;font-size:11pt;font-family:Calibri,sans-serif;line-height:19.55px;font-variant-ligatures:none"><span class="gmail-NormalTextRun gmail-SCXO148205415 gmail-BCX0" style="margin:0px;padding:0px;background-color:inherit">mmcli -m a --command='AT+WS46=36' </span></span><span class="gmail-TextRun gmail-SCXO148205415 gmail-BCX0" lang="EN-US" style="background-color:transparent;color:windowtext;margin:0px;padding:0px;font-size:11pt;font-family:Calibri,sans-serif;line-height:19.55px;font-variant-ligatures:none"><span class="gmail-NormalTextRun gmail-SCXO148205415 gmail-BCX0" style="margin:0px;padding:0px;background-color:inherit"> </span></span><span class="gmail-EOP gmail-SCXO148205415 gmail-BCX0" style="background-color:transparent;color:windowtext;margin:0px;padding:0px;font-size:11pt;line-height:19.55px;font-family:Calibri,sans-serif"> </span></div><div><font color="#000000" face="Calibri, sans-serif"><span style="font-size:14.6667px">insmod rmnet.ko</span></font></div><div class="gmail-OutlineElement gmail-Ltr gmail-BCX0 gmail-SCXO148205415" style="margin:0px;padding:0px;overflow:visible;clear:both;direction:ltr;color:rgb(0,0,0)"><p class="gmail-Paragraph gmail-SCXO148205415 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext"><font face="Calibri, sans-serif"><span style="font-size:14.6667px;font-variant-ligatures:none"><Delete all non-mux bearers></span></font></p></div><div class="gmail-OutlineElement gmail-Ltr gmail-BCX0 gmail-SCXO148205415" style="margin:0px;padding:0px;overflow:visible;clear:both;direction:ltr;color:rgb(0,0,0);font-family:"Segoe UI","Segoe UI Web",Arial,Verdana,sans-serif;font-size:12px"><div class="gmail-OutlineElement gmail-Ltr gmail-BCX0 gmail-SCXO80237753" style="margin:0px;padding:0px;overflow:visible;clear:both;direction:ltr"><p class="gmail-Paragraph gmail-SCXO80237753 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext"><span class="gmail-TextRun gmail-SCXO80237753 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;color:windowtext;font-size:11pt;font-family:Calibri,sans-serif;line-height:19.55px;font-variant-ligatures:none"><span class="gmail-NormalTextRun gmail-SCXO80237753 gmail-BCX0" style="margin:0px;padding:0px;background-color:inherit">mmcli -m any --simple-connect="multiplex=</span><span class="gmail-SpellingError gmail-SCXO80237753 gmail-BCX0" style="margin:0px;padding:0px;background-repeat:repeat-x;background-position:0% 100%;background-image:url("data:image/gif;base64,R0lGODlhBQAEAJECAP////8AAAAAAAAAACH5BAEAAAIALAAAAAAFAAQAAAIIlGAXCCHrTCgAOw==");border-bottom:1px solid transparent;background-color:inherit">requested,profile</span><span class="gmail-NormalTextRun gmail-SCXO80237753 gmail-BCX0" style="margin:0px;padding:0px;background-color:inherit">-id=1,ip-type=ipv4v6"</span></span><span class="gmail-EOP gmail-SCXO80237753 gmail-BCX0" style="margin:0px;padding:0px;font-size:11pt;line-height:19.55px;font-family:Calibri,sans-serif;color:windowtext"> </span></p></div><div class="gmail-OutlineElement gmail-Ltr gmail-SCXO80237753 gmail-BCX0" style="margin:0px;padding:0px;overflow:visible;clear:both;direction:ltr"><p class="gmail-Paragraph gmail-SCXO80237753 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext"><br></p></div><p class="gmail-Paragraph gmail-SCXO148205415 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext"><span class="gmail-EOP gmail-SCXO148205415 gmail-BCX0" style="background-color:transparent;color:windowtext;margin:0px;padding:0px;font-size:11pt;line-height:19.55px;font-family:Calibri,sans-serif"></span></p><div class="gmail-OutlineElement gmail-Ltr gmail-SCXO80237753 gmail-BCX0" style="margin:0px;padding:0px;overflow:visible;clear:both;direction:ltr"><p class="gmail-Paragraph gmail-SCXO80237753 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext"><b>And qmapmux0.0 creation failed with "imed out waiting for link port 'net/qmapmux0.0'"</b></p><p class="gmail-Paragraph gmail-SCXO80237753 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext"><br></p><p class="gmail-Paragraph gmail-SCXO80237753 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext">>></p><p class="gmail-Paragraph gmail-SCXO80237753 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext">= 1#012<<<<<<   value      = 03#012<<<<<<   translated = ipv4-or-ipv6#012<<<<<< TLV:#012<<<<<<   type       = "Profile Name" (0x10)#012<<<<<<   length     = 8#012<<<<<<   value      = 70:72:6F:66:69:6C:65:31#012<<<<<<   translated = profile1#012<br>2025-01-03T01:07:05.468 DEBUG  daemon ModemManager[32225]: <dbg> [modem0/cdc-wdm0/qmi] multiplex support already available when setting up data format<br>2025-01-03T01:07:05.468 DEBUG  daemon ModemManager[32225]: <dbg> [modem0/cdc-wdm0/qmi] Creating RMNET link with flags: ingress-map-cksumv5, egress-map-cksumv5<br>2025-01-03T01:07:05.486 DEBUG  daemon ModemManager[32225]: <dbg> Using dynamic mux ID 1<br>2025-01-03T01:07:05.489 NOTICE daemon ModemManager[32225]: <msg> [modem0/bearer2] net link qmapmux0.0 created (mux id 1)<br>2025-01-03T01:07:05.489 DEBUG  daemon ModemManager[32225]: <dbg> [modem0] waiting for port 'net/qmapmux0.0'...<br>2025-01-03T01:07:05.492 INFO   daemon linkd[7283]: create None(qmapmux0.0): state=->down, oper=->down, carrier=->1<br>2025-01-03T01:06:47.253 WARNIN user   kernel:[1451352.659164] ethtool: net: disabled offload features for qmapmux0.0<br>2025-01-03T01:07:05.614 INFO   daemon ModemManager[50632]: hotplug: add network interface qmapmux0.0: event ignored: couldn't get physical device sysfs path<br>2025-01-03T01:07:07.991 WARNIN daemon ModemManager[32225]: <wrn> [modem0/bearer2] connection attempt #1 failed: Timed out waiting for link port 'net/qmapmux0.0'<br>2025-01-03T01:07:07.991 NOTICE daemon ModemManager[32225]: <msg> [modem0] state changed (connecting -> registered)<br>2025-01-03T01:07:07.992 NOTICE daemon ModemManager[32225]: <msg> [modem0/bearer2] connection #1 finished: duration 0s<br>2025-01-03T01:07:07.992 WARNIN daemon ModemManager[32225]: <wrn> [modem0] couldn't connect bearer: Timed out waiting for link port 'net/qmapmux0.0'<br>2025-01-03T01:07:07.997 INFO   daemon linkd[7283]: change None(qmapmux0.0): state=down->down, oper=down->down, carrier=1->1<br>2025-01-03T01:07:08.004 INFO   daemon ModemManager[50807]: hotplug: remove network interface qmapmux0.0: event processed<br>2025-01-03T01:07:08.015 DEBUG  daemon ModemManager[32225]: <dbg> [base-manager] kernel event reported:<br>2025-01-03T01:07:08.015 DEBUG  daemon ModemManager[32225]: <dbg> [base-manager]   action:    remove<br>2025-01-03T01:07:08.015 DEBUG  daemon ModemManager[32225]: <dbg> [base-manager]   subsystem: net<br>2025-01-03T01:07:08.015 DEBUG  daemon ModemManager[32225]: <dbg> [base-manager]   name:      qmapmux0.0<br>2025-01-03T01:07:08.015 DEBUG  daemon ModemManager[32225]: <dbg> [base-manager]   uid:       n/a</p></div></div><div class="gmail-OutlineElement gmail-Ltr gmail-BCX0 gmail-SCXO148205415" style="margin:0px;padding:0px;overflow:visible;clear:both;direction:ltr;color:rgb(0,0,0);font-family:"Segoe UI","Segoe UI Web",Arial,Verdana,sans-serif;font-size:12px"><p class="gmail-Paragraph gmail-SCXO148205415 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext"><br></p></div><div class="gmail-OutlineElement gmail-Ltr gmail-BCX0 gmail-SCXO148205415" style="margin:0px;padding:0px;overflow:visible;clear:both;direction:ltr;color:rgb(0,0,0);font-family:"Segoe UI","Segoe UI Web",Arial,Verdana,sans-serif;font-size:12px"><p class="gmail-Paragraph gmail-SCXO148205415 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext"><span class="gmail-TextRun gmail-SCXO148205415 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;color:windowtext;font-size:11pt;font-family:Calibri,sans-serif;line-height:19.55px;font-variant-ligatures:none"><span class="gmail-NormalTextRun gmail-SCXO148205415 gmail-BCX0" style="margin:0px;padding:0px;background-color:inherit"></span></span><span class="gmail-EOP gmail-SCXO148205415 gmail-BCX0" style="margin:0px;padding:0px;font-size:11pt;line-height:19.55px;font-family:Calibri,sans-serif;color:windowtext"> Thanks,</span></p><p class="gmail-Paragraph gmail-SCXO148205415 gmail-BCX0" lang="EN-US" style="margin:0px;padding:0px;vertical-align:baseline;font-kerning:none;background-color:transparent;color:windowtext"><span class="gmail-EOP gmail-SCXO148205415 gmail-BCX0" style="margin:0px;padding:0px;font-size:11pt;line-height:19.55px;font-family:Calibri,sans-serif;color:windowtext">Pradeep G</span></p></div><div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Dec 31, 2024 at 10:44 AM Dan Williams <<a href="mailto:dan@ioncontrol.co">dan@ioncontrol.co</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Sun, 2024-12-29 at 19:08 -0800, Pradeep Gopanapalli wrote:<br>
> Hello,<br>
> I am trying to establish multiple 5G multiplex slices on a Telit<br>
> FN990 modem running in QMI mode. These 5G slices represent multiple<br>
> PDNs managed by ModemManager (via mmcli).<br>
> <br>
> When using the "--test-multiplex-requested" option, the bearer setup<br>
> fails with the following Netlink error:<br>
> GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._g_2dio_2derror_2dquar<br>
> k.Code0: failed to create net link for device: failed to add link for<br>
> device: Could not allocate link: Failed to add link with mux id 1:<br>
> Netlink message with transaction 9 failed<br>
<br>
Unfortunately libqmi-glib doesn't print out the actual error we get<br>
from netlink, which I've fixed here:<br>
<br>
<a href="https://gitlab.freedesktop.org/mobile-broadband/libqmi/-/merge_requests/389" rel="noreferrer" target="_blank">https://gitlab.freedesktop.org/mobile-broadband/libqmi/-/merge_requests/389</a><br>
<br>
would you be able to apply that patch locally and reproduce the issue,<br>
so that we can figure out the actual error code netlink is returning?<br>
<br>
Thanks,<br>
Dan<br>
<br>
> <br>
> Environment:<br>
>  * Modem: Telit FN990A28 in QMI mode<br>
>  * ModemManager: 1.22.0<br>
>  * libqmi: 1.34.0-2<br>
>  * libmbim: 1.30.0-2<br>
>  * Kernel: 5.15.150<br>
>  * OpenWrt: Based on 22.03 using netifd<br>
> Debug Logs During Bearer Connection:<br>
> (PFA message_modem_debug)<br>
> 2024-12-28T00:38:03.709 DEBUG daemon ModemManager[9676]: <br>
> [1735346283.709521] [modem0/bearer1] connecting...<br>
> 2024-12-28T00:38:03.709 NOTICE daemon ModemManager[9676]: <br>
> [1735346283.709796] [modem0] state changed (registered -> connecting)<br>
> 2024-12-28T00:38:03.709 DEBUG daemon ModemManager[9676]: <br>
> [1735346283.709904] [modem0/bearer1] launching connection with QMI<br>
> port (cdc-wdm0) and data port (wwan0) (multiplex requested)<br>
> 2024-12-28T00:38:03.709 DEBUG daemon ModemManager[9676]: <br>
> [1735346283.709916] [cdc-wdm0/qmi] bringing down data interface<br>
> 'wwan0'<br>
> 2024-12-28T00:38:03.710 DEBUG daemon ModemManager[9676]: <br>
> [1735346283.710309] [cdc-wdm0/qmi] resetting expected kernel data<br>
> format to 802.3 in data interface 'wwan0'<br>
> 2024-12-28T00:38:03.897 WARN daemon ModemManager[9676]: <br>
> [1735346283.897197] [modem0/bearer1] connection attempt #1 failed:<br>
> failed to create net link for device: failed to add link for device:<br>
> Could not allocate link: Failed to add link with mux id 1: Netlink<br>
> message with transaction 1 failed<br>
> 2024-12-28T00:38:03.898 NOTICE daemon netifd: CELL1 (19170): error:<br>
> couldn't connect the modem:<br>
> 'GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._g_2dio_2derror_2dqua<br>
> rk.Code0: failed to create net link for device: failed to add link<br>
> for device: Could not allocate link: Failed to add link with mux id<br>
> 1: Netlink message with transaction 1 failed'<br>
> Similar Issue Reported:<br>
> This issue has been reported in the following GitLab issue:<br>
> GitLab ModemManager Issue #533, but I have not seen a resolution for<br>
> it.<br>
> Reference Links:<br>
>  * ModemManager Mailing List - March 2022<br>
> Any assistance or suggestions on resolving this issue would be<br>
> greatly appreciated.<br>
> Thanks,<br>
> Pradeep G<br>
> <br>
> <br>
> This electronic communication and the information and any files<br>
> transmitted with it, or attached to it, are confidential and are<br>
> intended solely for the use of the individual or entity to whom it is<br>
> addressed and may contain information that is confidential, legally<br>
> privileged, protected by privacy laws, or otherwise restricted from<br>
> disclosure to anyone else. If you are not the intended recipient or<br>
> the person responsible for delivering the e-mail to the intended<br>
> recipient, you are hereby notified that any use, copying,<br>
> distributing, dissemination, forwarding, printing, or copying of this<br>
> e-mail is strictly prohibited. If you received this e-mail in error,<br>
> please return the e-mail to the sender, delete it from your computer,<br>
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<br>
</blockquote></div></div>

<br>
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