e1_input: add 'port_nr' field and support DAHDI T1 cards
the "e1_line <0-255> port <0-255>" vty command allows the user to
set which physical port/card number should be represented by the
given virtual e1_line.
Furthermore, we now actually query the DAHDI hardware to determine the
number of ports of a given span (e.g. only 24 in case of T1) instead of
blindly assuming there are 31 timeslots on each port.
This specifically will fix T1 timeslot (/dev/dahdi/%u) calculation in
setups with multiple DAHDI spans/ports and a T1 span != span 1.
5 files changed