On 10/7/25 7:23 AM, Andrii Nakryiko wrote:
On Sat, Oct 4, 2025 at 7:52 AM Rong Tao <[email protected]> wrote:
From: Rong Tao <[email protected]>
bpf_strcasestr() and bpf_strncasestr() functions perform same like
bpf_strstr() and bpf_strnstr() except ignoring the case of the
characters.
Signed-off-by: Rong Tao <[email protected]>
---
kernel/bpf/helpers.c | 96 ++++++++++++++++++++++++++++++++++----------
1 file changed, 75 insertions(+), 21 deletions(-)
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c
index c9fab9a356df..4df902e5f208 100644
--- a/kernel/bpf/helpers.c
+++ b/kernel/bpf/helpers.c
@@ -3675,34 +3675,20 @@ __bpf_kfunc int bpf_strcspn(const char *s__ign, const
char *reject__ign)
return -EFAULT;
}
-/**
- * bpf_strnstr - Find the first substring in a length-limited string
- * @s1__ign: The string to be searched
- * @s2__ign: The string to search for
- * @len: the maximum number of characters to search
- *
- * Return:
- * * >=0 - Index of the first character of the first occurrence of
@s2__ign
- * within the first @len characters of @s1__ign
- * * %-ENOENT - @s2__ign not found in the first @len characters of @s1__ign
- * * %-EFAULT - Cannot read one of the strings
- * * %-E2BIG - One of the strings is too large
- * * %-ERANGE - One of the strings is outside of kernel address space
- */
-__bpf_kfunc int bpf_strnstr(const char *s1__ign, const char *s2__ign, size_t
len)
+int __bpf_strnstr(const char *s1, const char *s2, size_t len, bool ignore_case)
keep it static?
Thanks, fixed in v3, please review.
Rong Tao
pw-bot: cr
[...]
