kernel/linux.git/tools/testing/selftests/tc-testing, branch v6.19.11

selftests/tc-testing: Try to add teql as a child qdisc

2026-01-19T20:06:42+00:00

Add a selftest that attempts to add a teql qdisc as a qfq child. Since teql _must_ be added as a root qdisc, the kernel should reject this. Signed-off-by: Victor Nogueira Link: https://patch.msgid.link/20260114160243.913069-4-jhs@mojatatu.com Signed-off-by: Jakub Kicinski

selftests/tc-testing: Add test case redirecting to self on egress

2026-01-06T00:23:43+00:00

Add single mirred test case that attempts to redirect to self on egress using clsact Signed-off-by: Victor Nogueira Link: https://patch.msgid.link/20260101135608.253079-3-jhs@mojatatu.com Signed-off-by: Jakub Kicinski

selftests/tc-testing: Test case exercising potential mirred redirect deadlock

2025-12-18T15:42:18+00:00

Add a test case that reproduces deadlock scenario where the user has a drr qdisc attached to root and has a mirred action that redirects to self on egress Signed-off-by: Victor Nogueira Acked-by: Jamal Hadi Salim Link: https://patch.msgid.link/20251210162255.1057663-2-jhs@mojatatu.com Signed-off-by: Paolo Abeni

selftests/tc-testing: Create tests to exercise ets classes active list misplacements

2025-12-11T09:36:40+00:00

Add a test case for a bug fixed by Jamal [1] and for scenario where an ets drr class is inserted into the active list twice. - Try to delete ets drr class' qdisc while still keeping it in the active list - Try to add ets class to the active list twice [1] https://lore.kernel.org/netdev/20251128151919.576920-1-jhs@mojatatu.com/ Acked-by: Jamal Hadi Salim Signed-off-by: Victor Nogueira Reviewed-by: Petr Machata Link: https://patch.msgid.link/20251208190125.1868423-2-victor@mojatatu.com Signed-off-by: Jakub Kicinski

selftests/tc-testing: Test CAKE scheduler when enqueue drops packets

2025-12-02T12:28:00+00:00

Add tests that trigger packet drops in cake_enqueue(): "CAKE with QFQ Parent - CAKE enqueue with packets dropping". It forces CAKE_enqueue to return NET_XMIT_CN after dropping the packets when it has a QFQ parent. Signed-off-by: Xiang Mei Reviewed-by: Toke Høiland-Jørgensen Link: https://patch.msgid.link/20251128001415.377823-3-xmei5@asu.edu Signed-off-by: Paolo Abeni

selftests/tc-testing: Create tests trying to add children to clsact/ingress qdiscs

2025-11-11T00:57:56+00:00

In response to Wang's bug report [1], add the following test cases: - Try and fail to add an fq child to an ingress qdisc - Try and fail to add an fq child to a clsact qdisc [1] https://lore.kernel.org/netdev/20251105022213.1981982-1-wangliang74@huawei.com/ Reviewed-by: Pedro Tammela Acked-by: Jamal Hadi Salim Signed-off-by: Victor Nogueira Reviewed-by: Cong Wang Link: https://patch.msgid.link/20251106205621.3307639-2-victor@mojatatu.com Signed-off-by: Jakub Kicinski

selftests/tc-testing: Adapt tc police action tests for Gb rounding changes

2025-09-15T23:13:13+00:00

For the tc police action, iproute2 rounds up mtu and burst sizes to a higher order representation. For example, if the user specifies the default mtu for a police action instance (4294967295 bytes), iproute2 will output it as 4096Mb when this action instance is dumped. After Jay's changes [1], iproute2 will round up to Gb, so 4096Mb becomes 4Gb. With that in mind, fix police's tc test output so that it works both with the current iproute2 version and Jay's. [1] https://lore.kernel.org/netdev/20250907014216.2691844-1-jay.vosburgh@canonical.com/ Signed-off-by: Victor Nogueira Reviewed-by: Cong Wang Reviewed-by: Jay Vosburgh Link: https://patch.msgid.link/20250912154616.67489-1-victor@mojatatu.com Signed-off-by: Jakub Kicinski

selftests/tc-testing: Check backlog stats in gso_skb case

2025-08-15T00:52:29+00:00

Add tests to ensure proper backlog accounting in hhf, codel, pie, fq, fq_pie, and fq_codel qdiscs. We check for the bug pattern originally found in fq, fq_pie, and fq_codel, which was an underflow in the tbf parent backlog stats upon child qdisc removal. Signed-off-by: William Liu Reviewed-by: Savino Dicanosa Link: https://patch.msgid.link/20250812235808.45281-1-will@willsroot.io Signed-off-by: Jakub Kicinski

selftests/tc-testing: Add selftests for qdisc DualPI2

2025-07-24T00:52:08+00:00

Update configuration of tc-tests and preload DualPI2 module for self-tests, and add following self-test cases for DualPI2: Test a4c7: Create DualPI2 with default setting Test 1ea4: Create DualPI2 with memlimit Test 2130: Create DualPI2 with typical_rtt and max_rtt Test 90c1: Create DualPI2 with max_rtt Test 7b3c: Create DualPI2 with any_ect option Test 49a3: Create DualPI2 with overflow option Test d0a1: Create DualPI2 with drop_enqueue option Test f051: Create DualPI2 with no_split_gso option Test 456b: Create DualPI2 with packet step_thresh Test 610c: Create DualPI2 with packet min_qlen_step Test b4fa: Create DualPI2 with packet coupling_factor Test 37f1: Create DualPI2 with packet classic_protection Signed-off-by: Chia-Yu Chang Reviewed-by: Victor Nogueira Link: https://patch.msgid.link/20250722095915.24485-6-chia-yu.chang@nokia-bell-labs.com Signed-off-by: Jakub Kicinski

selftests/tc-testing: Fix warning and style check on tdc.sh

2025-07-24T00:52:08+00:00

Replace exit code check with '! cmd' and add both quote and $(...) around 'nproc' to prevent warning and issue reported by shellcheck. Signed-off-by: Chia-Yu Chang Link: https://patch.msgid.link/20250722095915.24485-5-chia-yu.chang@nokia-bell-labs.com Signed-off-by: Jakub Kicinski