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61a00b196a
QOS tests create congestion and verify the switch behavior. To create congestion, they need to have more traffic than the port can handle, so some of them force 1Gbps speed. The tests assume that 1Gbps speed is supported, otherwise, they will fail. Spectrum-4 ASIC will not support this speed in all ports, so to be able to run the tests there, some adjustments are required. Use shapers to limit the traffic instead of forcing speed. Note that for several ports, the speed configuration is just for autoneg issues, so shaper is not needed instead. The tests already use ETS qdisc as a root and RED qdiscs as children. Add a new TBF shaper to limit the rate of traffic, and use it as a root qdisc, then save the previous hierarchy of qdiscs under the new TBF root. In some ASICs, the shapers do not limit the traffic as accurately as forcing speed. To make the tests stable, allow the backlog size to be up to +-10% of the threshold. The aim of the tests is to make sure that with backlog << threshold, there are no drops, and that packets are dropped somewhere in vicinity of the configured threshold. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
84 lines
1.2 KiB
Bash
Executable File
84 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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ALL_TESTS="
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ping_ipv4
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ecn_test
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ecn_test_perband
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ecn_nodrop_test
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red_test
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mc_backlog_test
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red_mirror_test
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"
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source sch_red_core.sh
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BACKLOG=300000
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install_qdisc()
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{
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local -a args=("$@")
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tc qdisc add dev $swp3 parent 1: handle 108: red \
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limit 1000000 min $BACKLOG max $((BACKLOG + 1)) \
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probability 1.0 avpkt 8000 burst 38 "${args[@]}"
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sleep 1
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}
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uninstall_qdisc()
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{
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tc qdisc del dev $swp3 parent 1:
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}
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ecn_test()
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{
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install_qdisc ecn
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do_ecn_test 10 $BACKLOG
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uninstall_qdisc
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}
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ecn_test_perband()
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{
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install_qdisc ecn
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do_ecn_test_perband 10 $BACKLOG
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uninstall_qdisc
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}
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ecn_nodrop_test()
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{
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install_qdisc ecn nodrop
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do_ecn_nodrop_test 10 $BACKLOG
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uninstall_qdisc
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}
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red_test()
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{
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install_qdisc
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do_red_test 10 $BACKLOG
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uninstall_qdisc
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}
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mc_backlog_test()
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{
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install_qdisc
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# Note that the backlog value here does not correspond to RED
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# configuration, but is arbitrary.
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do_mc_backlog_test 10 $BACKLOG
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uninstall_qdisc
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}
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red_mirror_test()
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{
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install_qdisc qevent early_drop block 10
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do_drop_mirror_test 10 $BACKLOG
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uninstall_qdisc
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}
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bail_on_lldpad
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trap cleanup EXIT
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setup_prepare
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setup_wait
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tests_run
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exit $EXIT_STATUS
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