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2024-08-12selftests: router_mpath: Sleep after MZPetr Machata
In the context of an offloaded datapath, it may take a while for the ip link stats to be updated. This causes the test to fail when MZ_DELAY is too low. Sleep after the packets are sent for the link stats to get up to date. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/8b1971d948273afd7de2da3d6a2ba35200540e55.1723036486.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-05selftests: forwarding: Parametrize mausezahn delayIdo Schimmel
The various multipath tests use mausezahn to generate different flows and check how they are distributed between the available nexthops. The tool is currently invoked with an hard coded transmission delay of 1 ms. This is unnecessary when the tests are run with veth pairs and needlessly prolongs the tests. Parametrize this delay and default it to 0 us. It can be overridden using the forwarding.config file. On my system, this reduces the run time of router_multipath.sh by 93%. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Link: https://lore.kernel.org/r/20240304095612.462900-3-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-05selftests: forwarding: Remove IPv6 L3 multipath hash testsIdo Schimmel
The multipath tests currently test both the L3 and L4 multipath hash policies for IPv6, but only the L4 policy for IPv4. The reason is mostly historic: When the initial multipath test was added (router_multipath.sh) the IPv6 L4 policy did not exist and was later added to the test. The other multipath tests copied this pattern although there is little value in testing both policies. Align the IPv4 and IPv6 tests and only test the L4 policy. On my system, this reduces the run time of router_multipath.sh by 89% because of the repeated ping6 invocations to randomize the flow label. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Link: https://lore.kernel.org/r/20240304095612.462900-2-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-28selftests: forwarding: Specify interface when invoking mausezahnDanielle Ratson
Specify the interface through which packets should be transmitted so that the test will pass regardless of the libnet version against which mausezahn is linked. Fixes: cab14d1087d9 ("selftests: Add version of router_multipath.sh using nexthop objects") Fixes: 3d578d879517 ("selftests: forwarding: Test IPv4 weighted nexthops") Signed-off-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2018-06-27selftests: forwarding: Move multipath_eval() to lib.shPetr Machata
This function will be useful for the GRE multipath test that is coming later. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-03selftests: forwarding: Use sysctl_set(), sysctl_restore()Petr Machata
Instead of hand-managing the sysctl set and restore, use the wrappers sysctl_set() and sysctl_restore() to do the bookkeeping automatically. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-03selftests: forwarding: Allow running specific testsIdo Schimmel
Similar to commit a511858c7536 ("selftests: fib_tests: Allow user to run a specific test"), allow user to run only a subset of the tests using the TESTS environment variable. This is useful when not all the tests can pass on a given system. Example: # export TESTS="ping_ipv4 ping_ipv6" # ./bridge_vlan_aware.sh TEST: ping [PASS] TEST: ping6 [PASS] Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-03selftests: forwarding: Increase maximum deviation in multipath testIdo Schimmel
We sometimes observe failures in the test due to too large discrepancy between the measured and expected ratios. For example: TEST: ECMP [FAIL] Too large discrepancy between expected and measured ratios INFO: Expected ratio 1.00 Measured ratio 1.11 Fix this by allowing an up to 15% deviation between both ratios. Another possibility is to increase the number of generated flows, but this will prolong the execution time of the test, which is already quite high. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04selftests: forwarding: Add multipath test for L4 hashingDavid Ahern
Add IPv6 multipath test using L4 hashing. Created with inputs from Ido Schimmel. Signed-off-by: David Ahern <dsahern@gmail.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Tested-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-01selftests: forwarding: Add description to the multipath testsDavid Ahern
Add a better description to the summary for multipath tests. e.g., INFO: Running IPv6 multipath tests TEST: ECMP [PASS] INFO: Expected ratio 1.00 Measured ratio 1.02 TEST: Weighted MP 2:1 [PASS] INFO: Expected ratio 2.00 Measured ratio 2.02 TEST: Weighted MP 11:45 [PASS] INFO: Expected ratio 4.09 Measured ratio 4.03 Signed-off-by: David Ahern <dsahern@gmail.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-01selftests: forwarding: Use PING6 instead of ping for ipv6 multipath testDavid Ahern
On Debian jessie ping can not handle IPv6 addresses so the command fails. Use PING6 which is set to ping6. Signed-off-by: David Ahern <dsahern@gmail.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-01selftests: forwarding: Handle 0 for packet difference in multipath testsDavid Ahern
If the packet stats have a difference of 0, the test output shows: INFO: Expected ratio 2.00 Measured ratio Runtime error (func=(main), adr=9): Divide by zero (standard_in) 2: syntax error (standard_in) 1: syntax error ./router_multipath.sh: line 187: test: : integer expression expected TEST: Multipath [FAIL] Too large discrepancy between expected and measured ratios Handle the 0 and display a cleaner message: INFO: Running IPv6 multipath tests TEST: Multipath [FAIL] Packet difference is 0 Signed-off-by: David Ahern <dsahern@gmail.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-28selftests: forwarding: Test IPv6 weighted nexthopsIdo Schimmel
Have one host generate 16K IPv6 echo requests with a random flow label and check that they are distributed between both multipath links according to the provided weights. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-28selftests: forwarding: Test IPv4 weighted nexthopsIdo Schimmel
Use different weights for the multipath route configured on the first router and check that the different flows generated by the first host are distributed according to the provided weights. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-28selftests: forwarding: Create test topology for multipath routingIdo Schimmel
Create a topology with two hosts, each directly connected to a different router. Both routers are connected using two links, enabling multipath routing. Test IPv4 and IPv6 ping using default MTU and large MTU. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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