tests: net: ipv4_fragment: Make test to run faster

Shorten the timeouts so that the tests are run in 6 second instead
of 15 seconds.

Use only native_sim for the tests so that the tests are run without
any extra delays.

Signed-off-by: Jukka Rissanen <[email protected]>

Author: jukkar

tests/net/ipv4_fragment/prj.conf

@@ -26,3 +26,5 @@ CONFIG_ZTEST_STACK_SIZE=2048
 
 CONFIG_INIT_STACKS=y
 CONFIG_NET_STATISTICS=n
+
+CONFIG_NET_IPV4_FRAGMENT_TIMEOUT=1

tests/net/ipv4_fragment/src/main.c

@@ -31,7 +31,7 @@ LOG_MODULE_REGISTER(net_ipv4_test, CONFIG_NET_IPV4_LOG_LEVEL);
 #define IPV4_TEST_PACKET_SIZE 2048
 
 /* Wait times for semaphores and buffers */
-#define WAIT_TIME K_SECONDS(2)
+#define WAIT_TIME K_MSEC(1100)
 #define ALLOC_TIMEOUT K_MSEC(500)
 
 /* Dummy network addresses, 192.168.8.1 and 192.168.8.2 */
@@ -776,7 +776,7 @@ ZTEST(net_ipv4_fragment, test_fragment_timeout)
 	zassert_equal(packets, 1, "Expected fragment to be present in buffer");
 
 	/* Delay briefly and re-check number of pending reassembly packets */
-	k_sleep(K_SECONDS(6));
+	k_sleep(K_MSEC(1100));
 	packets = 0;
 	net_ipv4_frag_foreach(reassembly_foreach_cb, &packets);
 	zassert_equal(packets, 0, "Expected fragment to be dropped after timeout");
@@ -790,7 +790,7 @@ ZTEST(net_ipv4_fragment, test_fragment_timeout)
 	zassert_equal(sem_count, 0, "Expected no complete upper-layer packets");
 
 	/* Check packet counts are valid */
-	k_sleep(K_SECONDS(1));
+	k_sleep(K_MSEC(500));
 	zassert_equal(lower_layer_packet_count, 1, "Expected 1 packet at lower layers");
 	zassert_equal(upper_layer_packet_count, 0, "Expected no packets at upper layers");
 	zassert_equal(last_packet_received, 1, "Expected last packet");
@@ -862,7 +862,7 @@ ZTEST(net_ipv4_fragment, test_do_not_fragment)
 		      "Expected timeout waiting for packet to be received");
 
 	/* Check packet counts are valid */
-	k_sleep(K_SECONDS(1));
+	k_sleep(K_MSEC(100));
 	zassert_equal(lower_layer_packet_count, 0, "Expected no packets at lower layers");
 	zassert_equal(upper_layer_packet_count, 0, "Expected no packets at upper layers");
 	zassert_equal(last_packet_received, 0, "Did not expect last packet");

tests/net/ipv4_fragment/testcase.yaml

@@ -9,6 +9,7 @@ common:
     - net
     - ipv4
     - fragment
+  platform_allow: native_sim
 tests:
   net.ipv4.fragment:
     extra_configs: