Hi Zhenhua, > >> I have a little question just as the title said? > >> In Ofono how to connect PPP to Linux socket, when we receive packet > >> from network, how the packet go through the kernel to application？ > >> > >> modem -->PPP-->? --> linux kernel(network part)--> socket --> > >> application? > > > > it is more like this: > > > > modem -> TTY -> PPP -> TUN/TAP -> Kernel Net-Stack -> socket -> > > application. > > > > With the TTY being in kernel, the PPP being in userspace, and TUN/TAP > > etc. begin in the kernel again. > > > > A future enhancement is to use the kernel PPP layer, but we haven't > > gotten there yet. > > I am interested to know how could we use kernel PPP layer instead of gatppp. > Shall we add this item into our TODO?
the kernel PPP line discipline can be used and then LCP and IPCP will be spoken via a side channel to the kernel. And all the packet handling is done by the kernel itself via the TTY line discipline. It is a bit more work than just using a TUN/TAP device. And of course it only works in real TTYs. Not on the GIOChannel that you get from GAtMux. Regards Marcel _______________________________________________ ofono mailing list [email protected] http://lists.ofono.org/listinfo/ofono
