Commit graph

370 commits

Author SHA1 Message Date
Chia-Yu Chang
032f0e9e15 selftests/tc-testing: Add selftests for qdisc DualPI2
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 <chia-yu.chang@nokia-bell-labs.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250722095915.24485-6-chia-yu.chang@nokia-bell-labs.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-23 17:52:08 -07:00
Chia-Yu Chang
51217c659e selftests/tc-testing: Fix warning and style check on tdc.sh
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 <chia-yu.chang@nokia-bell-labs.com>
Link: https://patch.msgid.link/20250722095915.24485-5-chia-yu.chang@nokia-bell-labs.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-23 17:52:08 -07:00
Jakub Kicinski
af2d6148d2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.16-rc7).

Conflicts:

Documentation/netlink/specs/ovpn.yaml
  880d43ca9a ("netlink: specs: clean up spaces in brackets")
  af52020fc5 ("ovpn: reject unexpected netlink attributes")

drivers/net/phy/phy_device.c
  a44312d58e ("net: phy: Don't register LEDs for genphy")
  f0f2b992d8 ("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
  5fde0fcbd7 ("wifi: iwlwifi: mask reserved bits in chan_state_active_bitmap")
  ea045a0de3 ("wifi: iwlwifi: add support for accepting raw DSM tables by firmware")

net/ipv6/mcast.c
  ae3264a25a ("ipv6: mcast: Delay put pmc->idev in mld_del_delrec()")
  a8594c956c ("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 <kuba@kernel.org>
2025-07-17 11:00:33 -07:00
William Liu
88b06e4fb4 selftests/tc-testing: Test htb_dequeue_tree with deactivation and row emptying
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 <will@willsroot.io>
Signed-off-by: Savino Dicanosa <savy@syst3mfailure.io>
Link: https://patch.msgid.link/20250717022912.221426-1-will@willsroot.io
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-17 07:47:56 -07:00
Victor Nogueira
e18f348632 selftests/tc-testing: Create test cases for adding qdiscs to invalid qdisc parents
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 <victor@mojatatu.com>
Link: https://patch.msgid.link/20250712145035.705156-1-victor@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-14 17:18:41 -07:00
William Liu
ecdec65ec7 selftests/tc-testing: Add tests for restrictions on netem duplication
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 <will@willsroot.io>
Reviewed-by: Savino Dicanosa <savy@syst3mfailure.io>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/20250708164219.875521-1-will@willsroot.io
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-11 15:50:21 -07:00
Jakub Kicinski
3321e97eab Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.16-rc6).

No conflicts.

Adjacent changes:

Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
  0a12c435a1 ("dt-bindings: net: sun8i-emac: Add A100 EMAC compatible")
  b3603c0466 ("dt-bindings: net: sun8i-emac: Rename A523 EMAC0 to GMAC0")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-10 10:10:49 -07:00
Victor Nogueira
d55683866c selftests/tc-testing: Create test case for UAF scenario with DRR/NETEM/BLACKHOLE chain
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 <victor@mojatatu.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://patch.msgid.link/20250705203638.246350-1-victor@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-09 19:10:54 -07:00
Sebastian Andrzej Siewior
131e0a1123 selftests/tc-testing: Enable CONFIG_IP_SET
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 <bigeasy@linutronix.de>
Link: https://patch.msgid.link/20250630153341.Wgh3SzGi@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-01 17:40:18 -07:00
Eric Dumazet
de74998c30 selftests/tc-testing: sfq: check perturb timer values
Add one test to check that the kernel rejects a negative perturb timer.

Add a second test checking that the kernel rejects
a too big perturb timer.

All test results:

1..2
ok 1 cdc1 - Check that a negative perturb timer is rejected
ok 2 a9f0 - Check that a too big perturb timer is rejected

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://patch.msgid.link/20250613064136.3911944-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-16 15:02:03 -07:00
Paolo Abeni
f6bd8faeb1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Merge in late fixes to prepare for the 6.16 net-next PR.

No conflicts nor adjacent changes.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-05-28 10:11:15 +02:00
Pedro Tammela
2945ff733d selftests/tc-testing: Add a test for HFSC eltree double add with reentrant enqueue behaviour on netem
Reproduce the UAF scenario where netem is a child of HFSC and HFSC
is configured to use the eltree. In such case, this TDC test would
cause the HFSC class to be added to the eltree twice resulting
in a UAF.

Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Link: https://patch.msgid.link/20250522181448.1439717-3-pctammela@mojatatu.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-05-28 08:55:35 +02:00
Jakub Kicinski
33e1b1b399 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc8).

Conflicts:
  80f2ab46c2 ("irdma: free iwdev->rf after removing MSI-X")
  4bcc063939 ("ice, irdma: fix an off by one in error handling code")
  c24a65b6a2 ("iidc/ice/irdma: Update IDC to support multiple consumers")
https://lore.kernel.org/20250513130630.280ee6c5@canb.auug.org.au

No extra adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-22 09:42:41 -07:00
Cong Wang
c3572acffb selftests/tc-testing: Add an HFSC qlen accounting test
This test reproduces a scenario where HFSC queue length and backlog accounting
can become inconsistent when a peek operation triggers a dequeue and possible
drop before the parent qdisc updates its counters. The test sets up a DRR root
qdisc with an HFSC class, netem, and blackhole children, and uses Scapy to
inject a packet. It helps to verify that HFSC correctly tracks qlen and backlog
even when packets are dropped during peek-induced dequeue.

Cc: Mingi Cho <mincho@theori.io>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250518222038.58538-3-xiyou.wangcong@gmail.com
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-05-22 11:16:51 +02:00
Jakub Kicinski
bebd7b2626 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc7).

Conflicts:

tools/testing/selftests/drivers/net/hw/ncdevmem.c
  97c4e094a4 ("tests/ncdevmem: Fix double-free of queue array")
  2f1a805f32 ("selftests: ncdevmem: Implement devmem TCP TX")
https://lore.kernel.org/20250514122900.1e77d62d@canb.auug.org.au

Adjacent changes:

net/core/devmem.c
net/core/devmem.h
  0afc44d8cd ("net: devmem: fix kernel panic when netlink socket close after module unload")
  bd61848900 ("net: devmem: Implement TX path")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-15 11:28:30 -07:00
Cong Wang
16ce349b15 selftests/tc-testing: Add qdisc limit trimming tests
Added new test cases for FQ, FQ_CODEL, FQ_PIE, and HHF qdiscs to verify queue
trimming behavior when the qdisc limit is dynamically reduced.

Each test injects packets, reduces the qdisc limit, and checks that the new
limit is enforced. This is still best effort since timing qdisc backlog
is not easy.

Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2025-05-09 12:34:38 +01:00
Jakub Kicinski
6b02fd7799 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc6).

No conflicts.

Adjacent changes:

net/core/dev.c:
  08e9f2d584 ("net: Lock netdevices during dev_shutdown")
  a82dc19db1 ("net: avoid potential race between netdev_get_by_index_lock() and netns switch")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-08 08:59:02 -07:00
Cong Wang
63890286f5 selftests/tc-testing: Add a test case to cover basic HTB+FQ_CODEL case
Integrate the reproducer from Alan into TC selftests and use scapy to
generate TCP traffic instead of relying on ping command.

Cc: Alan J. Wylie <alan@wylie.me.uk>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://patch.msgid.link/20250428232955.1740419-3-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-05 13:51:33 -07:00
Jakub Kicinski
337079d31f Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc5).

No conflicts or adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01 15:11:38 -07:00
Victor Nogueira
a6e1c5aa16 selftests: tc-testing: Add TDC tests that exercise reentrant enqueue behaviour
Add 5 TDC tests that exercise the reentrant enqueue behaviour in drr,
ets, qfq, and hfsc:

- Test DRR's enqueue reentrant behaviour with netem (which caused a
  double list add)
- Test ETS's enqueue reentrant behaviour with netem (which caused a double
  list add)
- Test QFQ's enqueue reentrant behaviour with netem (which caused a double
  list add)
- Test HFSC's enqueue reentrant behaviour with netem (which caused a UAF)
- Test nested DRR's enqueue reentrant behaviour with netem (which caused a
  double list add)

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250425220710.3964791-6-victor@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-28 15:55:07 -07:00
Jakub Kicinski
5565acd1e6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc4).

This pull includes wireless and a fix to vxlan which isn't
in Linus's tree just yet. The latter creates with a silent conflict
/ build breakage, so merging it now to avoid causing problems.

drivers/net/vxlan/vxlan_vnifilter.c
  094adad913 ("vxlan: Use a single lock to protect the FDB table")
  087a9eb9e5 ("vxlan: vnifilter: Fix unlocked deletion of default FDB entry")
https://lore.kernel.org/20250423145131.513029-1-idosch@nvidia.com

No "normal" conflicts, or adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-24 11:20:52 -07:00
Cong Wang
7629d1a04a selftests/tc-testing: Add test for HFSC queue emptying during peek operation
Add a selftest to exercise the condition where qdisc implementations
like netem or codel might empty the queue during a peek operation.
This tests the defensive code path in HFSC that checks the queue length
again after peeking to handle this case.

Based on the reproducer from Gerrard, improved by Jamal.

Reported-by: Gerrard Tai <gerrard.tai@starlabs.sg>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Tested-by: Victor Nogueira <victor@mojatatu.com>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/20250417184732.943057-4-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-23 17:16:50 -07:00
Jakub Kicinski
240ce924d2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc3).

No conflicts. Adjacent changes:

tools/net/ynl/pyynl/ynl_gen_c.py
  4d07bbf2d4 ("tools: ynl-gen: don't declare loop iterator in place")
  7e8ba0c7de ("tools: ynl: don't use genlmsghdr in classic netlink")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-17 12:26:50 -07:00
Toke Høiland-Jørgensen
18c889a9a4 selftests/tc-testing: Add test for echo of big TC filters
Add a selftest that checks whether the kernel can successfully echo a
big tc filter, to test the fix introduced in commit:

369609fc62 ("tc: Ensure we have enough buffer space when sending filter netlink notifications")

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Tested-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250410104322.214620-1-toke@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-11 16:33:32 -07:00
Jakub Kicinski
cb7103298d Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc2).

Conflict:

Documentation/networking/netdevices.rst
net/core/lock_debug.c
  04efcee6ef ("net: hold instance lock during NETDEV_CHANGE")
  03df156dd3 ("xdp: double protect netdev->xdp_flags with netdev->lock")

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-10 16:51:07 -07:00
Octavian Purdila
26e705184e selftests/tc-testing: sfq: check that a derived limit of 1 is rejected
Because the limit is updated indirectly when other parameters are
updated, there are cases where even though the user requests a limit
of 2 it can actually be set to 1.

Add the following test cases to check that the kernel rejects them:
- limit 2 depth 1 flows 1
- limit 2 depth 1 divisor 1

Signed-off-by: Octavian Purdila <tavip@google.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2025-04-09 12:55:48 +01:00
Victor Nogueira
5ac40e6b5b selftests: tc-testing: Pre-load IFE action and its submodules
Recently we had some issues in parallel TDC where some of IFE tests are
failing due to some of IFE's submodules (like act_meta_skbtcindex and
act_meta_skbprio) taking too long to load [1]. To avoid that issue,
pre-load IFE and all its submodules before running any of the tests in
tdc.sh

[1] https://lore.kernel.org/netdev/e909b2a0-244e-4141-9fa9-1b7d96ab7d71@mojatatu.com/T/#u

Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250407215656.2535990-1-victor@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-08 16:15:52 -07:00
Cong Wang
ce94507f5f selftests/tc-testing: Add a test case for FQ_CODEL with ETS parent
Add a test case for FQ_CODEL with ETS parent to verify packet drop
behavior when the queue becomes empty. This helps ensure proper
notification mechanisms between qdiscs.

Note this is best-effort, it is hard to play with those parameters
perfectly to always trigger ->qlen_notify().

Cc: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250403211636.166257-6-xiyou.wangcong@gmail.com
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08 10:58:16 +02:00
Cong Wang
0d5c27ecb6 selftests/tc-testing: Add a test case for FQ_CODEL with DRR parent
Add a test case for FQ_CODEL with DRR parent to verify packet drop
behavior when the queue becomes empty. This helps ensure proper
notification mechanisms between qdiscs.

Note this is best-effort, it is hard to play with those parameters
perfectly to always trigger ->qlen_notify().

Cc: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250403211636.166257-5-xiyou.wangcong@gmail.com
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08 10:58:16 +02:00
Cong Wang
72b05c1bf7 selftests/tc-testing: Add a test case for FQ_CODEL with HFSC parent
Add a test case for FQ_CODEL with HFSC parent to verify packet drop
behavior when the queue becomes empty. This helps ensure proper
notification mechanisms between qdiscs.

Note this is best-effort, it is hard to play with those parameters
perfectly to always trigger ->qlen_notify().

Cc: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250403211636.166257-4-xiyou.wangcong@gmail.com
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08 10:58:15 +02:00
Cong Wang
4cb1837ac5 selftests/tc-testing: Add a test case for FQ_CODEL with QFQ parent
Add a test case for FQ_CODEL with QFQ parent to verify packet drop
behavior when the queue becomes empty. This helps ensure proper
notification mechanisms between qdiscs.

Note this is best-effort, it is hard to play with those parameters
perfectly to always trigger ->qlen_notify().

Cc: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250403211636.166257-3-xiyou.wangcong@gmail.com
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08 10:58:15 +02:00
Cong Wang
cbe9588b12 selftests/tc-testing: Add a test case for FQ_CODEL with HTB parent
Add a test case for FQ_CODEL with HTB parent to verify packet drop
behavior when the queue becomes empty. This helps ensure proper
notification mechanisms between qdiscs.

Note this is best-effort, it is hard to play with those parameters
perfectly to always trigger ->qlen_notify().

Cc: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20250403211636.166257-2-xiyou.wangcong@gmail.com
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-04-08 10:58:15 +02:00
Pedro Tammela
ca9e5d3d9a selftests: tc-testing: fix nat regex matching
In iproute 6.14, the nat ip mask logic was fixed to remove an undefined
behaviour[1]. So now instead of reporting '0.0.0.0/32' on x86 and potentially
'0.0.0.0/0' in other platforms, it reports '0.0.0.0/0' in all platforms.

[1] https://lore.kernel.org/netdev/20250306112520.188728-1-torben.nielsen@prevas.dk/

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Link: https://patch.msgid.link/20250401144908.568140-1-pctammela@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-02 16:34:38 -07:00
Cong Wang
076c700988 selftests: tc-testing: Add TBF with SKBPRIO queue length corner case test
Add a test case to validate the interaction between TBF and SKBPRIO queueing
disciplines, specifically targeting queue length accounting corner cases.

This test complements the fix for the queue length accounting issue in the
SKBPRIO qdisc. This is still best-effort, as timing and manipulating enqueue
and dequeue from user-space is very hard.

Cc: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://patch.msgid.link/20250329222536.696204-3-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-02 16:03:33 -07:00
Jonathan Lennox
756f88ff9c tc-tests: Update tc police action tests for tc buffer size rounding fixes.
Before tc's recent change to fix rounding errors, several tests which
specified a burst size of "1m" would translate back to being 1048574
bytes (2b less than 1Mb).  sprint_size prints this as "1024Kb".

With the tc fix, the burst size is instead correctly reported as
1048576 bytes (precisely 1Mb), which sprint_size prints as "1Mb".

This updates the expected output in the tests' matchPattern values
to accept either the old or the new output.

Signed-off-by: Jonathan Lennox <jonathan.lennox@8x8.com>
Link: https://patch.msgid.link/20250312174804.313107-1-jonathan.lennox@8x8.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-19 18:40:24 +01:00
Cong Wang
bb7737de5f selftests/tc-testing: Add a test case for DRR class with TC_H_ROOT
Integrate the reproduer from Mingi to TDC.

All test results:

1..4
ok 1 0385 - Create DRR with default setting
ok 2 2375 - Delete DRR with handle
ok 3 3092 - Show DRR class
ok 4 4009 - Reject creation of DRR class with classid TC_H_ROOT

Cc: Mingi Cho <mincho@theori.io>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250306232355.93864-3-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-12 12:52:14 -07:00
Cong Wang
91aadc16ee selftests/tc-testing: Add a test case for qdisc_tree_reduce_backlog()
Integrate the test case provided by Mingi Cho into TDC.

All test results:

1..4
ok 1 ca5e - Check class delete notification for ffff:
ok 2 e4b7 - Check class delete notification for root ffff:
ok 3 33a9 - Check ingress is not searchable on backlog update
ok 4 a4b9 - Test class qlen notification

Cc: Mingi Cho <mincho@theori.io>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Link: https://patch.msgid.link/20250204005841.223511-5-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-05 18:15:00 -08:00
Quang Le
3fe5648d1d selftests/tc-testing: Add a test case for pfifo_head_drop qdisc when limit==0
When limit == 0, pfifo_tail_enqueue() must drop new packet and
increase dropped packets count of the qdisc.

All test results:

1..16
ok 1 a519 - Add bfifo qdisc with system default parameters on egress
ok 2 585c - Add pfifo qdisc with system default parameters on egress
ok 3 a86e - Add bfifo qdisc with system default parameters on egress with handle of maximum value
ok 4 9ac8 - Add bfifo qdisc on egress with queue size of 3000 bytes
ok 5 f4e6 - Add pfifo qdisc on egress with queue size of 3000 packets
ok 6 b1b1 - Add bfifo qdisc with system default parameters on egress with invalid handle exceeding maximum value
ok 7 8d5e - Add bfifo qdisc on egress with unsupported argument
ok 8 7787 - Add pfifo qdisc on egress with unsupported argument
ok 9 c4b6 - Replace bfifo qdisc on egress with new queue size
ok 10 3df6 - Replace pfifo qdisc on egress with new queue size
ok 11 7a67 - Add bfifo qdisc on egress with queue size in invalid format
ok 12 1298 - Add duplicate bfifo qdisc on egress
ok 13 45a0 - Delete nonexistent bfifo qdisc
ok 14 972b - Add prio qdisc on egress with invalid format for handles
ok 15 4d39 - Delete bfifo qdisc twice
ok 16 d774 - Check pfifo_head_drop qdisc enqueue behaviour when limit == 0

Signed-off-by: Quang Le <quanglex97@gmail.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Link: https://patch.msgid.link/20250204005841.223511-3-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-05 18:14:46 -08:00
Jakub Kicinski
14ea4cd1b1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc7).

Conflicts:
  a42d71e322 ("net_sched: sch_cake: Add drop reasons")
  737d4d91d3 ("sched: sch_cake: add bounds checks to host bulk flow fairness counts")

Adjacent changes:

drivers/net/ethernet/meta/fbnic/fbnic.h
  3a856ab347 ("eth: fbnic: add IRQ reuse support")
  95978931d5 ("eth: fbnic: Revert "eth: fbnic: Add hardware monitoring support via HWMON interface"")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-09 16:11:47 -08:00
Jakub Kicinski
e95274dfe8 selftests: tc-testing: reduce rshift value
After previous change rshift >= 32 is no longer allowed.
Modify the test to use 31, the test doesn't seem to send
any traffic so the exact value shouldn't matter.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250103182458.1213486-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-04 08:49:47 -08:00
Octavian Purdila
1e7e1f0e8b selftests/tc-testing: sfq: test that kernel rejects limit of 1
Add test to check that the kernel rejects a configuration with the
limit set to 1.

Signed-off-by: Octavian Purdila <tavip@google.com>
Link: https://patch.msgid.link/20241204030520.2084663-3-tavip@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-05 18:02:11 -08:00
Jakub Kicinski
a79993b5fc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.12-rc8).

Conflicts:

tools/testing/selftests/net/.gitignore
  252e01e682 ("selftests: net: add netlink-dumps to .gitignore")
  be43a6b238 ("selftests: ncdevmem: Move ncdevmem under drivers/net/hw")
https://lore.kernel.org/all/20241113122359.1b95180a@canb.auug.org.au/

drivers/net/phy/phylink.c
  671154f174 ("net: phylink: ensure PHY momentary link-fails are handled")
  7530ea26c8 ("net: phylink: remove "using_mac_select_pcs"")

Adjacent changes:

drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
  5b366eae71 ("stmmac: dwmac-intel-plat: fix call balance of tx_clk handling routines")
  e96321fad3 ("net: ethernet: Switch back to struct platform_driver::remove()")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-14 11:29:15 -08:00
Alexandre Ferrieux
ca34aceb32 net: sched: u32: Add test case for systematic hnode IDR leaks
Add a tdc test case to exercise the just-fixed systematic leak of
IDR entries in u32 hnode disposal. Given the IDR in question is
confined to the range [1..0x7FF], it is sufficient to create/delete
the same filter 2048 times to fill it up and get a nonzero exit
status from "tc filter add".

Signed-off-by: Alexandre Ferrieux <alexandre.ferrieux@orange.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20241113100428.360460-1-alexandre.ferrieux@orange.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-11-14 11:39:17 +01:00
Pedro Tammela
9ff75a23df selftests/tc-testing: add tests for qdisc_tree_reduce_backlog
Add 3 tests to check for the expected behaviour of
qdisc_tree_reduce_backlog in special scenarios.

- The first test checks if the qdisc class is notified of deletion for
major handle 'ffff:'.
- The second test checks the same as the first test but with 'ffff:' as the root
qdisc.
- The third test checks if everything works if ingress is active.

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Acked-by: Cong Wang <cong.wang@bytedance.com>
Link: https://patch.msgid.link/20241101143148.1218890-1-pctammela@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-03 15:31:58 -08:00
Karan Sanghavi
9a1036389f selftests: tc-testing: Fix typo error
Correct the typo errors in json files

- "diffferent" is corrected to "different".
- "muliple" and "miltiple" is corrected to "multiple".

Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Karan Sanghavi <karansanghvi98@gmail.com>
Link: https://patch.msgid.link/20241022-multiple_spell_error-v2-1-7e5036506fe5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-29 11:44:16 -07:00
Simon Horman
a0c9fe5eec tc-testing: don't access non-existent variable on exception
Since commit 255c1c7279 ("tc-testing: Allow test cases to be skipped")
the variable test_ordinal doesn't exist in call_pre_case().
So it should not be accessed when an exception occurs.

This resolves the following splat:

  ...
  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File ".../tdc.py", line 1028, in <module>
      main()
    File ".../tdc.py", line 1022, in main
      set_operation_mode(pm, parser, args, remaining)
    File ".../tdc.py", line 966, in set_operation_mode
      catresults = test_runner_serial(pm, args, alltests)
    File ".../tdc.py", line 642, in test_runner_serial
      (index, tsr) = test_runner(pm, args, alltests)
    File ".../tdc.py", line 536, in test_runner
      res = run_one_test(pm, args, index, tidx)
    File ".../tdc.py", line 419, in run_one_test
      pm.call_pre_case(tidx)
    File ".../tdc.py", line 146, in call_pre_case
      print('test_ordinal is {}'.format(test_ordinal))
  NameError: name 'test_ordinal' is not defined

Fixes: 255c1c7279 ("tc-testing: Allow test cases to be skipped")
Signed-off-by: Simon Horman <horms@kernel.org>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/20240815-tdc-test-ordinal-v1-1-0255c122a427@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-08-16 18:02:51 -07:00
Vladimir Oltean
fb66df20a7 net/sched: taprio: extend minimum interval restriction to entire cycle too
It is possible for syzbot to side-step the restriction imposed by the
blamed commit in the Fixes: tag, because the taprio UAPI permits a
cycle-time different from (and potentially shorter than) the sum of
entry intervals.

We need one more restriction, which is that the cycle time itself must
be larger than N * ETH_ZLEN bit times, where N is the number of schedule
entries. This restriction needs to apply regardless of whether the cycle
time came from the user or was the implicit, auto-calculated value, so
we move the existing "cycle == 0" check outside the "if "(!new->cycle_time)"
branch. This way covers both conditions and scenarios.

Add a selftest which illustrates the issue triggered by syzbot.

Fixes: b5b73b26b3 ("taprio: Fix allowing too small intervals")
Reported-by: syzbot+a7d2b1d5d1af83035567@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/0000000000007d66bc06196e7c66@google.com/
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20240527153955.553333-2-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-28 19:46:41 -07:00
Vladimir Oltean
e634134180 net/sched: taprio: make q->picos_per_byte available to fill_sched_entry()
In commit b5b73b26b3 ("taprio: Fix allowing too small intervals"), a
comparison of user input against length_to_duration(q, ETH_ZLEN) was
introduced, to avoid RCU stalls due to frequent hrtimers.

The implementation of length_to_duration() depends on q->picos_per_byte
being set for the link speed. The blamed commit in the Fixes: tag has
moved this too late, so the checks introduced above are ineffective.
The q->picos_per_byte is zero at parse_taprio_schedule() ->
parse_sched_list() -> parse_sched_entry() -> fill_sched_entry() time.

Move the taprio_set_picos_per_byte() call as one of the first things in
taprio_change(), before the bulk of the netlink attribute parsing is
done. That's because it is needed there.

Add a selftest to make sure the issue doesn't get reintroduced.

Fixes: 09dbdf28f9 ("net/sched: taprio: fix calculation of maximum gate durations")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240527153955.553333-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-28 19:46:41 -07:00
Pedro Tammela
dcfaf1f758 selftests/tc-testing: require an up to date iproute2 for blockcast tests
Add the dependsOn test check for all the mirred blockcast tests.
It will prevent the issue reported by LKFT which happens when an older
iproute2 is used to run the current tdc.

Tests are skipped if the dependsOn check fails.

Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Link: https://lore.kernel.org/r/20240229143825.1373550-1-pctammela@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-04 19:30:57 -08:00
Victor Nogueira
f51470c5c4 selftests: tc-testing: add mirred to block tdc tests
Add 8 new mirred tdc tests that target mirred to block:

- Add mirred mirror to egress block action
- Add mirred mirror to ingress block action
- Add mirred redirect to egress block action
- Add mirred redirect to ingress block action
- Try to add mirred action with both dev and block
- Try to add mirred action without specifying neither dev nor block
- Replace mirred redirect to dev action with redirect to block
- Replace mirred redirect to block action with mirror to dev

Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://lore.kernel.org/r/20240202020726.529170-1-victor@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-02-09 12:29:28 -08:00