Hey all! I've been working on updating ModemManager to allow setting up QMAP data aggregated links transparently, either with qmi_wwan add_mux/del_mux or with qmi_wwan+rmnet (pass_through=Y).
See https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/merge_requests/447 For the qmi_wwan+rmnet logic this MR in libqmi to disable the MAP checksum seems to be required, I don't fully understand why yet: https://gitlab.freedesktop.org/mobile-broadband/libqmi/-/merge_requests/215 For the qmi_wwan add_mux/del_mux logic, it works quite well without any additional thing required, with the limitation of max 4 links for now, because we cannot create new links once the master interface is already up (so we always precreate 4 link interfaces upon the first connection attempt). The MTU of the master link is set to the max data aggregation size reported by the modem in this case. What do you think of these changes? For now, I've made it the default to "multiplex=request" when setting up a connection, so that you can directly use e.g. NetworkManager to bring up the connection without any single change in NetworkManager itself. That may change later on, and we may leave the default as "multiplex=none" instead; comments welcome on that as well. Anyone wants to give all this a try? Comments? -- Aleksander https://aleksander.es _______________________________________________ ModemManager-devel mailing list ModemManager-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
