linux-kernel - [PATCH bpf-next 0/5] selftests/bpf: Extend sockmap_redir to test no-redir SK_DROP/SK

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250905-redir-test-pass-drop-v1-0-9d9e43ff40df@rbox.co>
Date: Fri, 05 Sep 2025 13:11:40 +0200
From: Michal Luczaj <mhal@...x.co>
To: Alexei Starovoitov <ast@...nel.org>, 
 Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>, 
 Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
 Yonghong Song <yonghong.song@...ux.dev>, 
 John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, 
 Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
 Jiri Olsa <jolsa@...nel.org>, Mykola Lysenko <mykolal@...com>, 
 Shuah Khan <shuah@...nel.org>
Cc: bpf@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Michal Luczaj <mhal@...x.co>, 
 Jiayuan Chen <mrpre@....com>
Subject: [PATCH bpf-next 0/5] selftests/bpf: Extend sockmap_redir to test
 no-redir SK_DROP/SK_PASS

sockmap_redir was introduced to comprehensively test the BPF redirection.
This series strives to increase the tested sockmap/sockhash code coverage;
adds support for skipping the actual redirect part, allowing to simply
SK_DROP or SK_PASS the packet.

BPF_MAP_TYPE_SOCKMAP
BPF_MAP_TYPE_SOCKHASH
	x
sk_msg-to-egress
sk_msg-to-ingress
sk_skb-to-egress
sk_skb-to-ingress
	x
AF_INET, SOCK_STREAM
AF_INET6, SOCK_STREAM
AF_INET, SOCK_DGRAM
AF_INET6, SOCK_DGRAM
AF_UNIX, SOCK_STREAM
AF_UNIX, SOCK_DGRAM
AF_VSOCK, SOCK_STREAM
AF_VSOCK, SOCK_SEQPACKET
	x
SK_REDIRECT
SK_DROP
SK_PASS

Patch 5 ("Support no-redirect SK_DROP/SK_PASS") implements the feature.
Patches 3 ("Rename functions") and 4 ("Let test specify skel's
redirect_type") make preparatory changes.

I also took the opportunity to clean up (Patch 1, "Simplify try_recv()")
and improve a bit (Patch 2, "Fix OOB handling").

$ cd tools/testing/selftests/bpf
$ make
$ sudo ./test_progs -t sockmap_redir
...
Summary: 1/720 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: Michal Luczaj <mhal@...x.co>
---
Michal Luczaj (5):
      selftests/bpf: sockmap_redir: Simplify try_recv()
      selftests/bpf: sockmap_redir: Fix OOB handling
      selftests/bpf: sockmap_redir: Rename functions
      selftests/bpf: sockmap_redir: Let test specify skel's redirect_type
      selftests/bpf: sockmap_redir: Support no-redirect SK_DROP/SK_PASS

 .../selftests/bpf/prog_tests/sockmap_redir.c       | 143 +++++++++++++++------
 1 file changed, 105 insertions(+), 38 deletions(-)
---
base-commit: e8a6a9d3e8cc539d281e77b9df2439f223ec8153
change-id: 20250523-redir-test-pass-drop-2f2a5edca6e1

Best regards,
-- 
Michal Luczaj <mhal@...x.co>