nic_router_flood.run: be more flexible

Do not simply wait for the good ping test to finish, but for the other
flood tests to trigger the RAM exhaustion. This makes the test more
robust with slower platforms or a different timing.

Issue #2857

repos/os/run/nic_router_flood.run

@@ -85,6 +85,7 @@ append config {
 		<provides><service name="Nic"/></provides>
 		<config verbose="no"
 		        verbose_packets="no"
+		        verbose_packet_drop="yes"
 		        verbose_domain_state="yes"
 		        dhcp_discover_timeout_sec="1"
 		        tcp_idle_timeout_sec="3600"
@@ -156,7 +157,7 @@ append config {
 		<resource name="RAM" quantum="8M"/>
 		<config dst_ip="} [good_dst_ip] {"
 		        period_sec="2"
-		        count="20"/>
+		        count="999"/>
 		<route>
 			<service name="Nic"> <child name="nic_router"/> </service>
 			<any-service> <parent/> <any-child/> </any-service>
@@ -195,4 +196,10 @@ append_if [have_spec lan9118] qemu_args " -net nic,model=lan9118 "
 
 append qemu_args " -net user -nographic "
 
-run_genode_until ".*\"ping\" exited with exit value 0.*\n" 60
+set done_string ""
+for {set i 0} {$i < 2} {incr i 1} {
+	append done_string {.*nic_router\] \[flood_links\] drop packet \(RAM quota exhausted.*\n}
+	append done_string {.*ping\] 64 bytes from 10\.0\.2\.2.*\n}
+}
+
+run_genode_until $done_string 120