From: Rong Tao rongtao@cestc.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.... v1: https://lore.kernel.org/all/tencent_8AF4D15B4475031E2185ACDE4B1495995707@qq....