From: Cong Wang <cong.wang@xxxxxxxxxxxxx>
This patchset fixes a bug in bpf_skb_change_tail() helper and adds test
cases for it, as requested by Daniel and John.
---
v3: switched to TCX prog attaching API
switched to UDP from TCP for TC test
cleaned up TC test code
v2: added a test case for TC where offsets are positive
fixed a typo in 1/4 patch description
reduced buffer size in the sockmap test case
Cong Wang (4):
bpf: Check negative offsets in __bpf_skb_min_len()
selftests/bpf: Add a BPF selftest for bpf_skb_change_tail()
selftests/bpf: Introduce socket_helpers.h for TC tests
selftests/bpf: Test bpf_skb_change_tail() in TC ingress
net/core/filter.c | 21 +-
.../selftests/bpf/prog_tests/socket_helpers.h | 394 ++++++++++++++++++
.../selftests/bpf/prog_tests/sockmap_basic.c | 51 +++
.../bpf/prog_tests/sockmap_helpers.h | 385 +----------------
.../selftests/bpf/prog_tests/tc_change_tail.c | 62 +++
.../bpf/progs/test_sockmap_change_tail.c | 40 ++
.../selftests/bpf/progs/test_tc_change_tail.c | 106 +++++
7 files changed, 669 insertions(+), 390 deletions(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/socket_helpers.h
create mode 100644 tools/testing/selftests/bpf/prog_tests/tc_change_tail.c
create mode 100644 tools/testing/selftests/bpf/progs/test_sockmap_change_tail.c
create mode 100644 tools/testing/selftests/bpf/progs/test_tc_change_tail.c
--
2.34.1
