linux-stable.git/tools/testing/selftests/net/lib, branch v6.18

selftests: drv-net: update remaining Python init files

2025-10-12T18:03:53+00:00

Convert remaining __init__ files similar to what we did in
commit b615879dbfea ("selftests: drv-net: make linters happy with our imports")

Signed-off-by: Jakub Kicinski 
Signed-off-by: Stanislav Fomichev 
Reviewed-by: Simon Horman 
Signed-off-by: David S. Miller

selftests: net: unify the Makefile formats

2025-10-06T20:14:06+00:00

We get a significant number of conflicts between net and net-next
because of selftests Makefile changes. People tend to append new
test cases at the end of the Makefile when there's no clear sort
order. Sort all networking selftests Makefiles, use the following
format:

 VAR_NAME := \
	 entry1 \
	 entry2 \
	 entry3 \
 # end of VAR_NAME

Some Makefiles are already pretty close to this.

Acked-by: Antonio Quartulli 
Acked-by: Matthieu Baerts (NGI0) 
Acked-by: Allison Henderson 
Reviewed-by: Petr Machata 
Link: https://patch.msgid.link/20251003210127.1021918-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests: drv-net: psp: add tests for destroying devices

2025-09-30T13:17:22+00:00

Add tests for making sure device can disappear while associations
exist. This is netdevsim-only since destroying real devices is
more tricky.

Signed-off-by: Jakub Kicinski 
Signed-off-by: Daniel Zahka 
Link: https://patch.msgid.link/20250927225420.1443468-9-kuba@kernel.org
Reviewed-by: Willem de Bruijn 
Signed-off-by: Paolo Abeni

selftests: drv-net: psp: add association tests

2025-09-30T13:17:22+00:00

Add tests for exercising PSP associations for TCP sockets.

Signed-off-by: Jakub Kicinski 
Signed-off-by: Daniel Zahka 
Link: https://patch.msgid.link/20250927225420.1443468-6-kuba@kernel.org
Reviewed-by: Willem de Bruijn 
Signed-off-by: Paolo Abeni

selftests: drv-net: base device access API test

2025-09-30T13:17:21+00:00

Simple PSP test to getting info about PSP devices.

Signed-off-by: Jakub Kicinski 
Signed-off-by: Daniel Zahka 
Link: https://patch.msgid.link/20250927225420.1443468-3-kuba@kernel.org
Reviewed-by: Willem de Bruijn 
Signed-off-by: Paolo Abeni

selftests: drv-net: Reload pkt pointer after calling filter_udphdr

2025-09-26T20:54:46+00:00

Fix a verification failure. filter_udphdr() calls bpf_xdp_pull_data(),
which will invalidate all pkt pointers. Therefore, all ctx->data loaded
before filter_udphdr() cannot be used. Reload it to prevent verification
errors.

The error may not appear on some compiler versions if they decide to
load ctx->data after filter_udphdr() when it is first used.

Fixes: efec2e55bdef ("selftests: drv-net: Pull data before parsing headers")
Signed-off-by: Amery Hung 
Acked-by: Martin KaFai Lau 
Link: https://patch.msgid.link/20250925161452.1290694-1-ameryhung@gmail.com
Signed-off-by: Jakub Kicinski

Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2025-09-24T17:22:37+00:00

Martin KaFai Lau says:

====================
pull-request: bpf-next 2025-09-23

We've added 9 non-merge commits during the last 33 day(s) which contain
a total of 10 files changed, 480 insertions(+), 53 deletions(-).

The main changes are:

1) A new bpf_xdp_pull_data kfunc that supports pulling data from
   a frag into the linear area of a xdp_buff, from Amery Hung.

   This includes changes in the xdp_native.bpf.c selftest, which
   Nimrod's future work depends on.

   It is a merge from a stable branch 'xdp_pull_data' which has
   also been merged to bpf-next.

   There is a conflict with recent changes in 'include/net/xdp.h'
   in the net-next tree that will need to be resolved.

2) A compiler warning fix when CONFIG_NET=n in the recent dynptr
   skb_meta support, from Jakub Sitnicki.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next:
  selftests: drv-net: Pull data before parsing headers
  selftests/bpf: Test bpf_xdp_pull_data
  bpf: Support specifying linear xdp packet data size for BPF_PROG_TEST_RUN
  bpf: Make variables in bpf_prog_test_run_xdp less confusing
  bpf: Clear packet pointers after changing packet data in kfuncs
  bpf: Support pulling non-linear xdp data
  bpf: Allow bpf_xdp_shrink_data to shrink a frag from head and tail
  bpf: Clear pfmemalloc flag when freeing all fragments
  bpf: Return an error pointer for skb metadata when CONFIG_NET=n
====================

Link: https://patch.msgid.link/20250924050303.2466356-1-martin.lau@linux.dev
Signed-off-by: Jakub Kicinski

Merge branch 'bpf-next/xdp_pull_data' into 'bpf-next/net'

2025-09-23T22:46:52+00:00

Merge the xdp_pull_data stable branch into the net branch. No conflict.

Signed-off-by: Martin KaFai Lau

selftests: drv-net: Pull data before parsing headers

2025-09-23T22:21:26+00:00

It is possible for drivers to generate xdp packets with data residing
entirely in fragments. To keep parsing headers using direct packet
access, call bpf_xdp_pull_data() to pull headers into the linear data
area.

Signed-off-by: Amery Hung 
Signed-off-by: Martin KaFai Lau 
Link: https://patch.msgid.link/20250922233356.3356453-9-ameryhung@gmail.com

selftests: defer: Introduce DEFER_PAUSE_ON_FAIL

2025-09-12T02:02:51+00:00

The fact that all cleanup (ideally) goes through the defer framework makes
debugging of these commands a bit tricky. However, this also gives us a
nice point to place a hook along the lines of PAUSE_ON_FAIL. When the
environment variable DEFER_PAUSE_ON_FAIL is set, and a cleanup command
results in non-zero exit status, show a bit of debuginfo and give the user
an opportunity to interrupt the execution altogether.

Signed-off-by: Petr Machata 
Acked-by: Nikolay Aleksandrov 
Link: https://patch.msgid.link/2a07d24568ede6c42e4701657fa0b738e490fe59.1757004393.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski