linux-stable.git/tools/testing/selftests/net/forwarding, branch v6.3

selftests: forwarding: tc_actions: cleanup temporary files when test is aborted

2023-02-16T05:34:07+00:00

remove temporary files created by 'mirred_egress_to_ingress_tcp' test
in the cleanup() handler. Also, change variable names to avoid clashing
with globals from lib.sh.

Suggested-by: Paolo Abeni 
Signed-off-by: Davide Caratti 
Link: https://lore.kernel.org/r/091649045a017fc00095ecbb75884e5681f7025f.1676368027.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski

selftests: forwarding: Add MDB dump test cases

2023-02-11T03:21:13+00:00

The kernel maintains three markers for the MDB dump:

1. The last bridge device from which the MDB was dumped.
2. The last MDB entry from which the MDB was dumped.
3. The last port-group entry that was dumped.

Add test cases for large scale MDB dump to make sure that all the
configured entries are dumped and that the markers are used correctly.

Specifically, create 2 bridges with 32 ports and add 256 MDB entries in
which all the ports are member of. Test that each bridge reports 8192
(256 * 32) permanent entries. Do that with IPv4, IPv6 and L2 MDB
entries.

On my system, MDB dump of the above is contained in about 50 netlink
messages.

Example output:

 # ./bridge_mdb.sh
 [...]
 INFO: # Large scale dump tests
 TEST: IPv4 large scale dump tests                                   [ OK ]
 TEST: IPv6 large scale dump tests                                   [ OK ]
 TEST: L2 large scale dump tests                                     [ OK ]
 [...]

Signed-off-by: Ido Schimmel 
Reviewed-by: Petr Machata 
Acked-by: Nikolay Aleksandrov 
Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2023-02-09T20:25:40+00:00

net/devlink/leftover.c / net/core/devlink.c:
  565b4824c39f ("devlink: change port event netdev notifier from per-net to global")
  f05bd8ebeb69 ("devlink: move code to a dedicated directory")
  687125b5799c ("devlink: split out core code")
https://lore.kernel.org/all/20230208094657.379f2b1a@canb.auug.org.au/

Signed-off-by: Jakub Kicinski

selftests: forwarding: lib: quote the sysctl values

2023-02-09T10:05:38+00:00

When set/restore sysctl value, we should quote the value as some keys
may have multi values, e.g. net.ipv4.ping_group_range

Fixes: f5ae57784ba8 ("selftests: forwarding: lib: Add sysctl_set(), sysctl_restore()")
Signed-off-by: Hangbin Liu 
Reviewed-by: Petr Machata 
Link: https://lore.kernel.org/r/20230208032110.879205-1-liuhangbin@gmail.com
Signed-off-by: Paolo Abeni

selftests: forwarding: bridge_mdb_max: Add a new selftest

2023-02-06T08:48:27+00:00

Add a suite covering mcast_n_groups and mcast_max_groups bridge features.

Signed-off-by: Petr Machata 
Acked-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller

selftests: forwarding: lib: Add helpers to build IGMP/MLD leave packets

2023-02-06T08:48:27+00:00

The testsuite that checks for mcast_max_groups functionality will need to
wipe the added groups as well. Add helpers to build an IGMP or MLD packets
announcing that host is leaving a given group.

Signed-off-by: Petr Machata 
Acked-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller

selftests: forwarding: lib: Allow list of IPs for IGMPv3/MLDv2

2023-02-06T08:48:27+00:00

The testsuite that checks for mcast_max_groups functionality will need
to generate IGMP and MLD packets with configurable number of (S,G)
addresses. To that end, further extend igmpv3_is_in_get() and
mldv2_is_in_get() to allow a list of IP addresses instead of one
address.

Signed-off-by: Petr Machata 
Acked-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller

selftests: forwarding: lib: Parameterize IGMPv3/MLDv2 generation

2023-02-06T08:48:26+00:00

In order to generate IGMPv3 and MLDv2 packets on the fly, the
functions that generate these packets need to be able to generate
packets for different groups and different sources. Generating MLDv2
packets further needs the source address of the packet for purposes of
checksum calculation. Add the necessary parameters, and generate the
payload accordingly by dispatching to helpers added in the previous
patches.

Adjust the sole client, bridge_mdb.sh, as well.

Signed-off-by: Petr Machata 
Acked-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller

selftests: forwarding: lib: Add helpers for checksum handling

2023-02-06T08:48:26+00:00

In order to generate IGMPv3 and MLDv2 packets on the fly, we will need
helpers to calculate the packet checksum.

The approach presented in this patch revolves around payload templates
for mausezahn. These are mausezahn-like payload strings (01:23:45:...)
with possibly one 2-byte sequence replaced with the word PAYLOAD. The
main function is payload_template_calc_checksum(), which calculates
RFC 1071 checksum of the message. There are further helpers to then
convert the checksum to the payload format, and to expand it.

For IPv6, MLDv2 message checksum is computed using a pseudoheader that
differs from the header used in the payload itself. The fact that the
two messages are different means that the checksum needs to be
returned as a separate quantity, instead of being expanded in-place in
the payload itself. Furthermore, the pseudoheader includes a length of
the message. Much like the checksum, this needs to be expanded in
mausezahn format. And likewise for number of addresses for (S,G)
entries. Thus we have several places where a computed quantity needs
to be presented in the payload format. Add a helper u16_to_bytes(),
which will be used in all these cases.

Signed-off-by: Petr Machata 
Acked-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller

selftests: forwarding: lib: Add helpers for IP address handling

2023-02-06T08:48:26+00:00

In order to generate IGMPv3 and MLDv2 packets on the fly, we will need
helpers to expand IPv4 and IPv6 addresses given as parameters in
mausezahn payload notation. Add helpers that do it.

Signed-off-by: Petr Machata 
Acked-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller