summaryrefslogtreecommitdiffstats
path: root/library
diff options
context:
space:
mode:
authorHarald Welte <laforge@osmocom.org>2020-09-14 09:42:28 +0200
committerHarald Welte <laforge@osmocom.org>2020-10-03 18:26:59 +0200
commitbd612cd3287fab3652f921307bb356a2a2f0fc94 (patch)
treeb93c9a762ed9f9368a99f874a74485e7f6512242 /library
parent867243a3ec2389fa67ab2b132dca1240abdf1913 (diff)
NS_Emulation: Introduce status events from provider -> emulation
This allows NS_Emulation to react to changes of the underlying transport layer (e.g. Frame Relay Link/DLCI up). Change-Id: If00e9c50dc664ce62b6c0cbde99d741e8173169b
Diffstat (limited to 'library')
-rw-r--r--library/NS_Emulation.ttcnpp16
-rw-r--r--library/NS_Provider_FR.ttcn25
-rw-r--r--library/NS_Provider_IPL4.ttcn1
3 files changed, 40 insertions, 2 deletions
diff --git a/library/NS_Emulation.ttcnpp b/library/NS_Emulation.ttcnpp
index 32746b4..5872b00 100644
--- a/library/NS_Emulation.ttcnpp
+++ b/library/NS_Emulation.ttcnpp
@@ -120,9 +120,17 @@ module NS_Emulation {
/* lower layer ports (UDP/IP, Frame Relay) are added in derived components */
};
+ type enumerated NS_Provider_LinkStatus {
+ NS_PROV_LINK_STATUS_UP,
+ NS_PROV_LINK_STATUS_DOWN
+ };
+ type union NS_Provider_Evt {
+ NS_Provider_LinkStatus link_status
+ };
+
/* port between NS_Provider and NS_CT */
type port NS_PROVIDER_PT message {
- inout PDU_NS;
+ inout PDU_NS, NS_Provider_Evt;
} with { extension "internal" };
type component NS_CT {
@@ -211,6 +219,12 @@ module NS_Emulation {
f_sendAlive();
}
+ [] NSCP.receive(NS_Provider_Evt:{link_status:=NS_PROV_LINK_STATUS_UP}) {
+ log("Provider Link came up: sending NS-ALIVE");
+ f_sendAlive();
+ Tns_test.start;
+ }
+
/* Stop t_alive when receiving ALIVE-ACK */
[Tns_alive.running] NSCP.receive(t_NS_ALIVE_ACK) {
log("NS-ALIVE-ACK received: stopping Tns-alive; starting Tns-test");
diff --git a/library/NS_Provider_FR.ttcn b/library/NS_Provider_FR.ttcn
index 851e6c4..afa27d9 100644
--- a/library/NS_Provider_FR.ttcn
+++ b/library/NS_Provider_FR.ttcn
@@ -22,6 +22,9 @@ import from FrameRelay_Emulation all;
type component NS_Provider_FR_CT extends NS_Provider_CT, FR_Client_CT {
/* component reference to Frame Relay emulation */
var FR_Emulation_CT vc_FREMU;
+
+ var boolean link_available := false;
+ var boolean pvc_active := false;
};
function main(NSConfiguration config) runs on NS_Provider_FR_CT system af_packet {
@@ -50,8 +53,28 @@ function main(NSConfiguration config) runs on NS_Provider_FR_CT system af_packet
NSE.send(dec_PDU_NS(rx_fr.payload));
}
+ [] FR.receive(FRemu_Event:{link_status:=FR_LINK_STS_AVAILABLE}) -> value rx_frevt {
+ if (link_available == false and pvc_active == true) {
+ NSE.send(NS_Provider_Evt:{link_status := NS_PROV_LINK_STATUS_UP});
+ }
+ link_available := true;
+ }
+ [] FR.receive(FRemu_Event:{link_status:=FR_LINK_STS_UNAVAILABLE}) -> value rx_frevt {
+ link_available := false;
+ NSE.send(NS_Provider_Evt:{link_status := NS_PROV_LINK_STATUS_DOWN});
+ }
+ [] FR.receive(tr_FRemu_PvcStatusAct(config.provider.fr.dlci, true)) -> value rx_frevt {
+ if (pvc_active == false and link_available == true) {
+ NSE.send(NS_Provider_Evt:{link_status := NS_PROV_LINK_STATUS_UP});
+ }
+ pvc_active := true;
+ }
+ [] FR.receive(tr_FRemu_PvcStatusAct(config.provider.fr.dlci, false)) -> value rx_frevt {
+ pvc_active := false;
+ NSE.send(NS_Provider_Evt:{link_status := NS_PROV_LINK_STATUS_DOWN});
+ }
[] FR.receive(FRemu_Event:?) -> value rx_frevt {
- /* TODO: dispatch to user */
+ log("Unhandled FRemu_event: ", rx_frevt);
}
[] NSE.receive(PDU_NS:?) -> value rx_pdu {
FR.send(ts_FR(config.provider.fr.dlci, enc_PDU_NS(rx_pdu), true));
diff --git a/library/NS_Provider_IPL4.ttcn b/library/NS_Provider_IPL4.ttcn
index 1414935..f1fda6c 100644
--- a/library/NS_Provider_IPL4.ttcn
+++ b/library/NS_Provider_IPL4.ttcn
@@ -36,6 +36,7 @@ function main(NSConfiguration config) runs on NS_Provider_IPL4_CT {
mtc.stop;
}
g_conn_id := res.connId;
+ NSE.send(NS_Provider_Evt:{link_status := NS_PROV_LINK_STATUS_UP});
/* transceive beteween user-facing port and UDP socket */
while (true) {