selftests/bpf: Add a test for using a cpumap from an freplace-to-XDP program

2022-12-15T05:30:40Z

This adds a simple test for inserting an XDP program into a cpumap that is "owned" by an XDP program that was loaded as PROG_TYPE_EXT (as libxdp does). Prior to the kernel fix this would fail because the map type ownership would be set to PROG_TYPE_EXT instead of being resolved to PROG_TYPE_XDP. v5: - Fix a few nits from Andrii, add his ACK v4: - Use skeletons for selftest v3: - Update comment to better explain the cause - Add Yonghong's ACK Acked-by: Yonghong Song Acked-by: Andrii Nakryiko Signed-off-by: Toke Høiland-Jørgensen Link: https://lore.kernel.org/r/20221214230254.790066-2-toke@redhat.com Signed-off-by: Martin KaFai Lau

kernel/tools/testing/selftests/bpf/progs/freplace_progmap.c, branch linux-6.2.y

selftests/bpf: Add a test for using a cpumap from an freplace-to-XDP program