linux/tools/testing/selftests/tc-testing, branch v6.17

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

2025-08-15T00:52:29Z

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

2025-07-24T00:52:08Z

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

2025-07-24T00:52:08Z

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

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

2025-07-17T18:00:33Z

Cross-merge networking fixes after downstream PR (net-6.16-rc7). Conflicts: Documentation/netlink/specs/ovpn.yaml 880d43ca9aa4 ("netlink: specs: clean up spaces in brackets") af52020fc599 ("ovpn: reject unexpected netlink attributes") drivers/net/phy/phy_device.c a44312d58e78 ("net: phy: Don't register LEDs for genphy") f0f2b992d818 ("net: phy: Don't register LEDs for genphy") https://lore.kernel.org/20250710114926.7ec3a64f@kernel.org drivers/net/wireless/intel/iwlwifi/fw/regulatory.c drivers/net/wireless/intel/iwlwifi/mld/regulatory.c 5fde0fcbd760 ("wifi: iwlwifi: mask reserved bits in chan_state_active_bitmap") ea045a0de3b9 ("wifi: iwlwifi: add support for accepting raw DSM tables by firmware") net/ipv6/mcast.c ae3264a25a46 ("ipv6: mcast: Delay put pmc->idev in mld_del_delrec()") a8594c956cc9 ("ipv6: mcast: Avoid a duplicate pointer check in mld_del_delrec()") https://lore.kernel.org/8cc52891-3653-4b03-a45e-05464fe495cf@kernel.org No adjacent changes. Signed-off-by: Jakub Kicinski

selftests/tc-testing: Test htb_dequeue_tree with deactivation and row emptying

2025-07-17T14:47:56Z

Ensure that any deactivation and row emptying that occurs during htb_dequeue_tree does not cause a kernel panic. This scenario originally triggered a kernel BUG_ON, and we are checking for a graceful fail now. Signed-off-by: William Liu Signed-off-by: Savino Dicanosa Link: https://patch.msgid.link/20250717022912.221426-1-will@willsroot.io Signed-off-by: Jakub Kicinski

selftests/tc-testing: Create test cases for adding qdiscs to invalid qdisc parents

2025-07-15T00:18:41Z

As described in a previous commit [1], Lion's patch [2] revealed an ancient bug in the qdisc API. Whenever a user tries to add a qdisc to an invalid parent (not a class, root, or ingress qdisc), the qdisc API will detect this after qdisc_create is called. Some qdiscs (like fq_codel, pie, and sfq) call functions (on their init callback) which assume the parent is valid, so qdisc_create itself may have caused a NULL pointer dereference in such cases. This commit creates 3 TDC tests that attempt to add fq_codel, pie and sfq qdiscs to invalid parents - Attempts to add an fq_codel qdisc to an hhf qdisc parent - Attempts to add a pie qdisc to a drr qdisc parent - Attempts to add an sfq qdisc to an inexistent hfsc classid (which would belong to a valid hfsc qdisc) [1] https://lore.kernel.org/all/20250707210801.372995-1-victor@mojatatu.com/ [2] https://lore.kernel.org/netdev/d912cbd7-193b-4269-9857-525bee8bbb6a@gmail.com/ Signed-off-by: Victor Nogueira Link: https://patch.msgid.link/20250712145035.705156-1-victor@mojatatu.com Signed-off-by: Jakub Kicinski

selftests/tc-testing: Add tests for restrictions on netem duplication

2025-07-11T22:50:21Z

Ensure that a duplicating netem cannot exist in a tree with other netems in both qdisc addition and change. This is meant to prevent the soft lockup and OOM loop scenario discussed in [1]. Also adjust a HFSC's re-entrancy test case with netem for this new restriction - KASAN still triggers upon its failure. [1] https://lore.kernel.org/netdev/8DuRWwfqjoRDLDmBMlIfbrsZg9Gx50DHJc1ilxsEBNe2D6NMoigR_eIRIG0LOjMc3r10nUUZtArXx4oZBIdUfZQrwjcQhdinnMis_0G7VEk=@willsroot.io/ Signed-off-by: William Liu Reviewed-by: Savino Dicanosa Acked-by: Jamal Hadi Salim Link: https://patch.msgid.link/20250708164219.875521-1-will@willsroot.io Signed-off-by: Jakub Kicinski

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

2025-07-10T17:10:49Z

Cross-merge networking fixes after downstream PR (net-6.16-rc6). No conflicts. Adjacent changes: Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml 0a12c435a1d6 ("dt-bindings: net: sun8i-emac: Add A100 EMAC compatible") b3603c0466a8 ("dt-bindings: net: sun8i-emac: Rename A523 EMAC0 to GMAC0") Signed-off-by: Jakub Kicinski

selftests/tc-testing: Create test case for UAF scenario with DRR/NETEM/BLACKHOLE chain

2025-07-10T02:10:54Z

Create a tdc test for the UAF scenario with DRR/NETEM/BLACKHOLE chain shared by Lion on his report [1]. [1] https://lore.kernel.org/netdev/45876f14-cf28-4177-8ead-bb769fd9e57a@gmail.com/ Signed-off-by: Victor Nogueira Acked-by: Cong Wang Link: https://patch.msgid.link/20250705203638.246350-1-victor@mojatatu.com Signed-off-by: Jakub Kicinski

selftests/tc-testing: Enable CONFIG_IP_SET

2025-07-02T00:40:18Z

The config snippet specifies CONFIG_NET_EMATCH_IPSET. This option depends on CONFIG_IP_SET. Set CONFIG_IP_SET to be enabled at part for tc-testing. Signed-off-by: Sebastian Andrzej Siewior Link: https://patch.msgid.link/20250630153341.Wgh3SzGi@linutronix.de Signed-off-by: Jakub Kicinski