Since the modem iface and the GGSN iface are on the same host/netns,
it's really difficult to conveniently test data plane without getting
routing loops. As a result, either GGSN or modem iface must be moved to
a different namespace. The decision after a few discussions was finally
to move modem interfaces to a different netns.
Expected setup:
* ofono is patched to avoid removing modem if it detects
through udev that its net iface was removed (due to for instance, net
iface being moved to another netns and thus not being reachable anymore
by systemd-udev process running in root netns).
* After ofono is started (and successfully configured all the modems and
detected its net ifaces through syfs/udev), script "modem-netns-setup.py
start" which creates a netns for each modem, naming it after its usb
path ID. net ifaces for that modem are moved into its netns.
* Modem is configured to use 802-3 data format, and as a result the net
iface is configured through DHCP (DHCP req only replied AFTER pdp ctx is
activated!).
* Since osmo-gsm-tester knowns the modem USB path ID (available in
resources.conf), it can run required steps (ifup, DHCP) to configure the
interface. The interface name is provided by ofono to osmo-gsm-tester.
* As a result, any process willing to transmit data through the modem
must be in the modem netns.
Related: OS#2308
Change-Id: Icb06bdfcdd37c797be95ab5addb28da2d9f6681c
The host was updated to have several IP address to be able to run
several instances of osmo-trx in parallel.
Change-Id: I3595b82a5d202caec7bc48a63e28ce0331e5abb7
Run osmo-trx in a separate more powerful machine (i5) rather than
running in low end APU where osmo-gsm-tester runs.
Change-Id: I0479643789783d5e8a142042a65c4d53020d1e79
* This commit is a preparation for future commits to add support for
different osmo-trx devices and backends like osmo-trx-lms.
* Drop deprecated osmo-trx-* cmd line params and use VTY cfg to set them.
* As number of osmo-trx related osmo-gsm-tester attributes grow, group
them togther in an "osmo_trx" dictionary.
Change-Id: I77d29413c9e3b600b796627ba366f80c3281b7e1
num_trx is left for now by default to 1, but it has been tested to work
properly (current tests pass and both trx are configured) with
num_trx=2.
Change-Id: Ib3962f824a804e2aa582601475a8514c6cb0d8e7
nanobts IP addresses are assigned through DHCP, and are not local to the
main unit. Let's use another subset for this DHCP pool as we usually use
.50ish for static local IP addresses.
Change-Id: Ibdb0dd97a490aaa555a7bf53cf43cc5a5533a012
We still want to maintain this file in the same osmo-gsm-tester repo
because we frequently neef to update the config when adding new
features.
Until now only 1 file was maintained (which was used for RnD setup), and
then when runnin in prod the jenkins script used sed to change the file
to accomodate slightly changes. This way is too hacky, so let's just
maintain too separate files, keeping the original resources.conf key
name used by osmo-gsm-tester free, so that jenkins job can symlink one
of the 2 files to it.
Take the chance to remove OctoBTS and Sysmocell5k from the RnD resources
file, as we don't have those them.
Change-Id: Ifec851c7ac6fca6b294e57dfe86b92f214ae8f42
Pau Espin