Hi all,
this v5 of the patch series is very similar to v4, but rebased onto the
bpf-next/net branch instead of bpf-next/master.
Because the commit c047e0e0e435 ("selftests/bpf: Optionally open a
dedicated namespace to run test in it") is not yet included in this branch,
I changed the xdp_context_tuntap test to manually create a namespace to run
the test in.
Not so successful pipeline: https://github.com/kernel-patches/bpf/actions/runs/13682405154
The CI pipeline failed because of veristat changes in seemingly unrelated
eBPF programs. I don't think this has to do with the changes from this
patch series, but if it does, please let me know what I may have to do
different to make the CI pass.
---
v5:
- rebase onto bpf-next/net
- resolve rebase conflicts
- change xdp_context_tuntap test to manually create and open a network
namespace using netns_new
v4: https://lore.kernel.org/bpf/20250227142330.1605996-1-marcus.wichelmann@xxxxxxxxxxxxxxxx/
- strip unrelated changes from the selftest patches
- extend commit message for "selftests/bpf: refactor xdp_context_functional
test and bpf program"
- the NOARP flag was not effective to prevent other packets from
interfering with the tests, add a filter to the XDP program instead
- run xdp_context_tuntap in a separate namespace to avoid conflicts with
other tests
v3: https://lore.kernel.org/bpf/20250224152909.3911544-1-marcus.wichelmann@xxxxxxxxxxxxxxxx/
- change the condition to handle xdp_buffs without metadata support, as
suggested by Willem de Bruijn <willemb@xxxxxxxxxx>
- add clarifying comment why that condition is needed
- set NOARP flag in selftests to ensure that the kernel does not send
packets on the test interfaces that may interfere with the tests
v2: https://lore.kernel.org/bpf/20250217172308.3291739-1-marcus.wichelmann@xxxxxxxxxxxxxxxx/
- submit against bpf-next subtree
- split commits and improved commit messages
- remove redundant metasize check and add clarifying comment instead
- use max() instead of ternary operator
- add selftest for metadata support in the tun driver
v1: https://lore.kernel.org/all/20250130171614.1657224-1-marcus.wichelmann@xxxxxxxxxxxxxxxx/
Marcus Wichelmann (6):
net: tun: enable XDP metadata support
net: tun: enable transfer of XDP metadata to skb
selftests/bpf: move open_tuntap to network helpers
selftests/bpf: refactor xdp_context_functional test and bpf program
selftests/bpf: add test for XDP metadata support in tun driver
selftests/bpf: fix file descriptor assertion in open_tuntap helper
drivers/net/tun.c | 28 +++-
tools/testing/selftests/bpf/network_helpers.c | 28 ++++
tools/testing/selftests/bpf/network_helpers.h | 3 +
.../selftests/bpf/prog_tests/lwt_helpers.h | 29 ----
.../bpf/prog_tests/xdp_context_test_run.c | 145 +++++++++++++++++-
.../selftests/bpf/progs/test_xdp_meta.c | 53 +++++--
6 files changed, 230 insertions(+), 56 deletions(-)
--
2.43.0
