linux-toradex.git/tools/testing/selftests/tc-testing/tc-tests, branch master

selftests/tc-testing: Add tests that force red and sfb to dequeue from child's gso_skb

2026-05-02T17:20:56+00:00

Create 4 test cases:
- Force red to dequeue from its child's gso_skb with qfq leaf
- Force sfb to dequeue from its child's gso_skb with qfq leaf
- Force red to dequeue from its child's gso_skb with dualpi2 leaf
- Force sfb to dequeue from its child's gso_skb with dualpi2 leaf

All of them have tbf followed by red (or sfb) followed by qfq (or
dualpi2). Since tbf calls its child's peek followed by
qdisc_dequeue_peeked, it will force red/sfb to call their child's peek.
In this case, since the child (qfq/dualpi2) has qdisc_peek_dequeued as
its peek callback, the packet will be stored in its gso_skb queue. During
the subsequent call to qdisc_dequeue_peeked, red/sfb will have to dequeue
from the child's gso_skb to retrieve the packet.
Not doing so will cause a NULL ptr deref which was happening before a
recent fix.

Acked-by: Jamal Hadi Salim 
Signed-off-by: Victor Nogueira 
Link: https://patch.msgid.link/20260430152957.194015-4-jhs@mojatatu.com
Signed-off-by: Jakub Kicinski

selftests/tc-testing: add taprio test for class dump after child delete

2026-04-28T01:41:36+00:00

Add a regression test for the NULL pointer dereference fixed in the
previous commit. Before the fix, taprio_graft() stored NULL into
q->qdiscs[cl - 1] when an explicitly grafted child qdisc was deleted
via RTM_DELQDISC; the next RTM_GETTCLASS dump then crashed the kernel
in taprio_dump_class() while reading child->handle.

The test installs a taprio root qdisc on a multi-queue netdevsim
device, grafts a pfifo child onto class 8001:1, deletes that child,
and then performs a class dump. On a fixed kernel the dump succeeds
and all eight taprio classes are listed; on an unpatched kernel the
class dump crashes, which surfaces as a test failure.

Signed-off-by: Weiming Shi 
Acked-by: Jamal Hadi Salim 
Link: https://patch.msgid.link/20260422161958.2517539-4-bestswngs@gmail.com
Signed-off-by: Jakub Kicinski

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

2026-04-02T18:03:13+00:00

Cross-merge networking fixes after downstream PR (net-7.0-rc7).

Conflicts:

net/vmw_vsock/af_vsock.c
  b18c83388874 ("vsock: initialize child_ns_mode_locked in vsock_net_init()")
  0de607dc4fd8 ("vsock: add G2H fallback for CIDs not owned by H2G transport")

Adjacent changes:

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
  ceee35e5674a ("bnxt_en: Refactor some basic ring setup and adjustment logic")
  57cdfe0dc70b ("bnxt_en: Resize RSS contexts on channel count change")

drivers/net/wireless/intel/iwlwifi/mld/mac80211.c
  4d56037a02bd ("wifi: iwlwifi: mld: block EMLSR during TDLS connections")
  687a95d204e7 ("wifi: iwlwifi: mld: correctly set wifi generation data")

drivers/net/wireless/intel/iwlwifi/mld/scan.h
  b6045c899e37 ("wifi: iwlwifi: mld: Refactor scan command handling")
  ec66ec6a5a8f ("wifi: iwlwifi: mld: Fix MLO scan timing")

drivers/net/wireless/intel/iwlwifi/mvm/fw.c
  078df640ef05 ("wifi: iwlwifi: mld: add support for iwl_mcc_allowed_ap_type_cmd v
2")
  323156c3541e ("wifi: iwlwifi: mvm: don't send a 6E related command when not supported")

Signed-off-by: Jakub Kicinski

selftests/tc-testing: add tests for cls_fw and cls_flow on shared blocks

2026-04-02T13:08:42+00:00

Regression tests for the shared-block NULL derefs fixed in the previous
two patches:

  - fw: attempt to attach an empty fw filter to a shared block and
    verify the configuration is rejected with EINVAL.
  - flow: create a flow filter on a shared block without a baseclass
    and verify the configuration is rejected with EINVAL.

Signed-off-by: Xiang Mei 
Acked-by: Jamal Hadi Salim 
Reviewed-by: Victor Nogueira 
Link: https://patch.msgid.link/20260331050217.504278-3-xmei5@asu.edu
Signed-off-by: Paolo Abeni

selftests/tc-testing: add test for HFSC divide-by-zero in rtsc_min()

2026-03-28T03:41:11+00:00

Add a regression test for the divide-by-zero in rtsc_min() triggered
when m2sm() converts a large m1 value (e.g. 32gbit) to a u64 scaled
slope reaching 2^32. rtsc_min() stores the difference of two such u64
values (sm1 - sm2) in a u32 variable `dsm`, truncating 2^32 to zero
and causing a divide-by-zero oops in the concave-curve intersection
path. The test configures an HFSC class with m1=32gbit d=1ms m2=0bit,
sends a packet to activate the class, waits for it to drain and go
idle, then sends another packet to trigger reactivation through
rtsc_min().

Signed-off-by: Xiang Mei 
Acked-by: Jamal Hadi Salim 
Reviewed-by: Victor Nogueira 
Link: https://patch.msgid.link/20260326204310.1549327-2-xmei5@asu.edu
Signed-off-by: Jakub Kicinski

tc-testing: add a test case for ETS offload

2026-03-21T03:13:14+00:00

While reviewing the fix for unintentional u32 overflows in ets offload
code, Jamal said:

 [...]

 > otherwise a tdc test should cover it fine (when you get to the
 > netdevsim change perhaps)

Extend tdc to allow setting hw-tc-offload via ethtool, and
add a test case to reproduce the division by zero fixed in [1].

[1] https://lore.kernel.org/all/CAM0EoMm17wsYZmdFLshH3_-GrZtzd=i0xnoO2yiVB=-N4761mw@mail.gmail.com/

Suggested-by: Jamal Hadi Salim 
Reviewed-by: Jamal Hadi Salim 
Co-developed-by: Victor Nogueira 
Signed-off-by: Victor Nogueira 
Signed-off-by: Davide Caratti 
Link: https://patch.msgid.link/39129c374cbd00147b8c5afc04db59db62b50acc.1773945414.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski

selftests/tc-testing: Adapt test's output to HFSC's iproute2 printing changes

2026-03-10T02:42:19+00:00

To make the printing of HFSC's defcls consistent with HTB's,
iproute2 is now printing defcls prepended with "0x".

This commit adapts test a4c3 to this change.

Acked-by: Jamal Hadi Salim 
Signed-off-by: Victor Nogueira 
Link: https://patch.msgid.link/20260307220724.2501212-1-victor@mojatatu.com
Signed-off-by: Jakub Kicinski

selftests/tc-testing: Add tests exercising act_ife metalist replace behaviour

2026-03-05T15:54:09+00:00

Add 2 test cases to exercise fix in act_ife's internal metalist
behaviour.

- Update decode ife action into encode with tcindex metadata
- Update decode ife action into encode with multiple metadata

Acked-by: Jamal Hadi Salim 
Signed-off-by: Victor Nogueira 
Link: https://patch.msgid.link/20260304140603.76500-2-jhs@mojatatu.com
Signed-off-by: Jakub Kicinski

selftests/tc-testing: Create tests to exercise act_ct binding restrictions

2026-02-28T03:06:21+00:00

Add 4 test cases to exercise new act_ct binding restrictions:

- Try to attach act_ct to an ets qdisc
- Attach act_ct to an ingress qdisc
- Attach act_ct to a clsact/egress qdisc
- Attach act_ct to a shared block

Signed-off-by: Victor Nogueira 
Acked-by: Jamal Hadi Salim 
Link: https://patch.msgid.link/20260225134349.1287037-2-victor@mojatatu.com
Signed-off-by: Jakub Kicinski

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

2026-01-23T04:14:36+00:00

Cross-merge networking fixes after downstream PR (net-6.19-rc7).

Conflicts:

drivers/net/ethernet/huawei/hinic3/hinic3_irq.c
  b35a6fd37a00 ("hinic3: Add adaptive IRQ coalescing with DIM")
  fb2bb2a1ebf7 ("hinic3: Fix netif_queue_set_napi queue_index input parameter error")
https://lore.kernel.org/fc0a7fdf08789a52653e8ad05281a0a849e79206.1768915707.git.zhuyikai1@h-partners.com

drivers/net/wireless/ath/ath12k/mac.c
drivers/net/wireless/ath/ath12k/wifi7/hw.c
  31707572108d ("wifi: ath12k: Fix wrong P2P device link id issue")
  c26f294fef2a ("wifi: ath12k: Move ieee80211_ops callback to the arch specific module")
https://lore.kernel.org/20260114123751.6a208818@canb.auug.org.au

Adjacent changes:

drivers/net/wireless/ath/ath12k/mac.c
  8b8d6ee53dfd ("wifi: ath12k: Fix scan state stuck in ABORTING after cancel_remain_on_channel")
  914c890d3b90 ("wifi: ath12k: Add framework for hardware specific ieee80211_ops registration")

Signed-off-by: Jakub Kicinski