linux-kernel - [PATCH bpf-next v3 0/2] Add kfuncs bpf_strcasestr and bpf

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Message-ID: <tencent_15BBCAE66BDD681D629FC197104C56D46506@qq.com>
Date: Tue,  7 Oct 2025 10:59:27 +0800
From: Rong Tao <rtoax@...mail.com>
To: vmalik@...hat.com,
	ast@...nel.org,
	eddyz87@...il.com
Cc: rtoax@...mail.com,
	Rong Tao <rongtao@...tc.cn>,
	Daniel Borkmann <daniel@...earbox.net>,
	Andrii Nakryiko <andrii@...nel.org>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	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>,
	Shuah Khan <shuah@...nel.org>,
	bpf@...r.kernel.org (open list:BPF [GENERAL] (Safe Dynamic Programs and Tools)),
	linux-kernel@...r.kernel.org (open list),
	linux-kselftest@...r.kernel.org (open list:KERNEL SELFTEST FRAMEWORK)
Subject: [PATCH bpf-next v3 0/2] Add kfuncs bpf_strcasestr and bpf_strncasestr

From: Rong Tao <rongtao@...tc.cn>

Add kfuncs bpf_strcasestr and bpf_strncasestr, which are extensions of
bpf_strstr and bpf_strnstr, suitable for more scenarios.

Rong Tao (2):
  bpf: add bpf_strcasestr,bpf_strncasestr kfuncs
  selftests/bpf: Test bpf_strcasestr,bpf_strncasestr kfuncs

 kernel/bpf/helpers.c                          | 97 +++++++++++++++----
 .../selftests/bpf/prog_tests/string_kfuncs.c  |  2 +
 .../bpf/progs/string_kfuncs_failure1.c        | 12 +++
 .../bpf/progs/string_kfuncs_failure2.c        |  2 +
 .../bpf/progs/string_kfuncs_success.c         | 10 ++
 5 files changed, 102 insertions(+), 21 deletions(-)

--- 
v3: keep __bpf_strnstr() static and compress some tests.
v2: remove extra __bpf_kfunc and fix comment of bpf_strncasestr().
    https://lore.kernel.org/all/tencent_6D228941AB904DD6E1E58C8ACDEBEC280C06@qq.com/
v1: https://lore.kernel.org/all/tencent_8AF4D15B4475031E2185ACDE4B1495995707@qq.com/
-- 
2.51.0