From 4db88de2fa559c436558866b83567a70a6ddaa50 Mon Sep 17 00:00:00 2001
From: Andre Puschmann <andre@softwareradiosystems.com>
Date: Wed, 2 Sep 2020 22:24:11 +0200
Subject: enb_srs: expose DL AWGN channel modifier for srsENB

we've added the modifier to configure Amarisoft eNB channel
model. This patch enables it for srsENB.

Change-Id: I30e65d0431b2d2792986128287caf8b23a22b2c1
---
 src/osmo_gsm_tester/obj/enb_srs.py             |  2 ++
 src/osmo_gsm_tester/templates/srsenb.conf.tmpl | 10 +++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/osmo_gsm_tester/obj/enb_srs.py b/src/osmo_gsm_tester/obj/enb_srs.py
index 7556f92..68a3a19 100644
--- a/src/osmo_gsm_tester/obj/enb_srs.py
+++ b/src/osmo_gsm_tester/obj/enb_srs.py
@@ -194,6 +194,8 @@ class srsENB(enb.eNodeB, srslte_common):
         self.enable_pcap = util.str2bool(values['enb'].get('enable_pcap', 'false'))
         config.overlay(values, dict(enb={'enable_pcap': self.enable_pcap}))
 
+        config.overlay(values, dict(enb={'enable_dl_awgn': util.str2bool(values['enb'].get('enable_dl_awgn', 'false'))}))
+
         self._additional_args = []
         for add_args in values['enb'].get('additional_args', []):
             self._additional_args += add_args.split()
diff --git a/src/osmo_gsm_tester/templates/srsenb.conf.tmpl b/src/osmo_gsm_tester/templates/srsenb.conf.tmpl
index ac94313..7409b3a 100644
--- a/src/osmo_gsm_tester/templates/srsenb.conf.tmpl
+++ b/src/osmo_gsm_tester/templates/srsenb.conf.tmpl
@@ -193,8 +193,16 @@ enable = false
 # hst.fd_hz:         Doppler frequency in Hz
 # hst.init_time_s:   Initial time in seconds
 #####################################################################
+% if enb.enable_dl_awgn:
 [channel.dl]
-#enable        = false
+enable        = true
+% endif
+
+% if enb.enable_dl_awgn:
+[channel.dl.awgn]
+enable        = true
+snr           = ${enb.dl_awgn_snr}
+% endif
 
 [channel.dl.fading]
 #enable        = false
-- 
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