[PATCH bpf-next v4 0/2] bpf: add bpf_strcat,bpf_strncat kfunc

[Rong Tao]

Add string concatenation kfuncs.

Rong Tao (2):
  bpf: add bpf_strcat,bpf_strncat kfunc
  selftests/bpf: Test bpf_strcat,bpf_strncat kfuncs

 kernel/bpf/helpers.c                          | 70 +++++++++++++++++++
 .../selftests/bpf/prog_tests/string_kfuncs.c  |  2 +
 .../bpf/progs/string_kfuncs_failure1.c        | 53 ++++++++------
 .../bpf/progs/string_kfuncs_failure2.c        |  3 +
 .../bpf/progs/string_kfuncs_success.c         | 10 +++
 5 files changed, 117 insertions(+), 21 deletions(-)

---
v4: Addressed Viktor's review comments (see v3)
v3: Use bpf_probe_read_kernel_str and resolve some bot suggestion issues
    https://lore.kernel.org/lkml/3e73aeb2-afce-4ae9-9163-51e4dc1ded01@xxxxxxxxxx/
v2: Resolve some bot suggestion issues
    https://lore.kernel.org/lkml/tencent_9EC04DC824CBF5124305E73564341511C405@xxxxxx/
v1: https://lore.kernel.org/lkml/tencent_59689407B1C3204B08362BEEF244A5FE5505@xxxxxx/
-- 
2.55.0