linux-dev/tools/testing/selftests/net/forwarding/lib.sh, branch linus/master

selftests: lib: Add a generic helper for obtaining HW stats

2022-05-08T10:46:20Z

The function get_l3_stats() from the test hw_stats_l3.sh will be useful for any test that wishes to work with L3 stats. Furthermore, it is easy to generalize to other HW stats suites (for when such are added). Therefore, move the code to lib.sh, rewrite it to have the same interface as the other stats-collecting functions, and generalize to take the name of the HW stats suite to collect as an argument. Signed-off-by: Petr Machata Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller

selftests: forwarding: lib: Add start_traffic_pktsize() helpers

2022-05-03T10:10:50Z

Add two helpers, start_traffic_pktsize() and start_tcp_traffic_pktsize(), that allow explicit overriding of packet size. Change start_traffic() and start_tcp_traffic() to dispatch through these helpers with the default packet size. Signed-off-by: Petr Machata Signed-off-by: Ido Schimmel Signed-off-by: Paolo Abeni

selftests: forwarding: add helper for retrieving IPv6 link-local address of interface

2022-04-23T11:18:16Z

Pinging an IPv6 link-local multicast address selects the link-local unicast address of the interface as source, and we'd like to monitor for that in tcpdump. Add a helper to the forwarding library which retrieves the link-local IPv6 address of an interface, to make that task easier. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

selftests: forwarding: add helpers for IP multicast group joins/leaves

2022-04-23T11:18:16Z

Extend the forwarding library with calls to some small C programs which join an IP multicast group and send some packets to it. Both IPv4 and IPv6 groups are supported. Use cases range from testing IGMP/MLD snooping, to RX filtering, to multicast routing. Testing multicast traffic using msend/mreceive is intended to be done using tcpdump. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

selftests: forwarding: multiple instances in tcpdump helper

2022-04-23T11:18:16Z

Extend tcpdump_start() & C:o to handle multiple instances. Useful when observing bridge operation, e.g., unicast learning/flooding, and any case of multicast distribution (to these ports but not that one ...). This means the interface argument is now a mandatory argument to all tcpdump_*() functions, hence the changes to the ocelot flower test. Signed-off-by: Joachim Wiberg Reviewed-by: Vladimir Oltean Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

selftests: forwarding: add TCPDUMP_EXTRA_FLAGS to lib.sh

2022-04-23T11:18:16Z

For some use-cases we may want to change the tcpdump flags used in tcpdump_start(). For instance, observing interfaces without the PROMISC flag, e.g. to see what's really being forwarded to the bridge interface. Signed-off-by: Joachim Wiberg Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

selftests: forwarding: add option to run tests with stable MAC addresses

2022-04-23T11:18:16Z

By default, DSA switch ports inherit their MAC address from the DSA master. This works well for practical situations, but some selftests like bridge_vlan_unaware.sh loop back 2 standalone DSA ports with 2 bridged DSA ports, and require the bridge to forward packets between the standalone ports. Due to the bridge seeing that the MAC DA it needs to forward is present as a local FDB entry (it coincides with the MAC address of the bridge ports), the test packets are not forwarded, but terminated locally on br0. In turn, this makes the ping and ping6 tests fail. Address this by introducing an option to have stable MAC addresses. When mac_addr_prepare is called, the current addresses of the netifs are saved and replaced with 00:01:02:03:04:${netif number}. Then when mac_addr_restore is called at the end of the test, the original MAC addresses are restored. This ensures that the MAC addresses are unique, which makes the test pass even for DSA ports. The usage model is for the behavior to be opt-in via STABLE_MAC_ADDRS, which DSA should set to true, all others behave as before. By hooking the calls to mac_addr_prepare and mac_addr_restore within the forwarding lib itself, we do not need to patch each individual selftest, the only requirement is that pre_cleanup is called. Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

selftests: netdevsim: hw_stats_l3: Add a new test

2022-03-15T13:00:51Z

Add a test that verifies basic UAPI contracts, netdevsim operation, rollbacks after partial enablement in core, and UAPI notifications. Signed-off-by: Petr Machata Signed-off-by: Paolo Abeni

selftests: forwarding: tests of locked port feature

2022-02-23T12:52:34Z

These tests check that the basic locked port feature works, so that no 'host' can communicate (ping) through a locked port unless the MAC address of the 'host' interface is in the forwarding database of the bridge. Signed-off-by: Hans Schultz Acked-by: Ido Schimmel Signed-off-by: David S. Miller

selftests: net: bridge: Parameterize ageing timeout

2022-02-03T14:05:56Z

Allow the ageing timeout that is set on bridges to be customized from forwarding.config. This allows the tests to be run on hardware which does not support a 10s timeout (e.g. mv88e6xxx). Signed-off-by: Tobias Waldekranz Reviewed-by: Petr Machata Signed-off-by: David S. Miller