tests: net: timestamp: Add unit test for network pkt timestamping

Test that Tx timestamp callback code is called properly if network
packet timestamping is enabled.

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

Author: jukkar

tests/net/tx_timestamp/CMakeLists.txt

@@ -0,0 +1,6 @@
+include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)
+project(NONE)
+
+target_include_directories(app PRIVATE $ENV{ZEPHYR_BASE}/subsys/net/ip)
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/net/tx_timestamp/prj.conf

@@ -0,0 +1,33 @@
+CONFIG_NETWORKING=y
+CONFIG_NET_TEST=y
+CONFIG_NET_IPV6=y
+CONFIG_NET_UDP=y
+CONFIG_NET_TCP=n
+CONFIG_NET_IPV4=n
+CONFIG_NET_MAX_CONTEXTS=4
+CONFIG_NET_L2_ETHERNET=y
+CONFIG_NET_LOG=y
+CONFIG_SYS_LOG_SHOW_COLOR=y
+CONFIG_ENTROPY_GENERATOR=y
+CONFIG_TEST_RANDOM_GENERATOR=y
+CONFIG_NET_IPV6_DAD=n
+CONFIG_NET_IPV6_MLD=n
+CONFIG_NET_PKT_TX_COUNT=15
+CONFIG_NET_PKT_RX_COUNT=15
+CONFIG_NET_BUF_RX_COUNT=15
+CONFIG_NET_BUF_TX_COUNT=15
+CONFIG_NET_IF_MAX_IPV6_COUNT=6
+CONFIG_NET_IF_UNICAST_IPV6_ADDR_COUNT=6
+CONFIG_NET_IPV6_ND=n
+CONFIG_ZTEST=y
+CONFIG_NET_APP=n
+CONFIG_NET_APP_SETTINGS=n
+CONFIG_NET_DEBUG_L2_ETHERNET=n
+CONFIG_NET_DEBUG_CONTEXT=n
+CONFIG_NET_DEBUG_IF=n
+CONFIG_NET_DEBUG_CORE=n
+CONFIG_NET_DEBUG_IPV6=n
+CONFIG_NET_DEBUG_NET_PKT=y
+CONFIG_SYS_LOG_NET_LEVEL=4
+CONFIG_NET_SHELL=n
+CONFIG_NET_PKT_TIMESTAMP=y