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

selftest: bpf: Test copying a sockmap and sockhash

2020-09-28T23:48:02Z

Since we can now call map_update_elem(sockmap) from bpf_iter context it's possible to copy a sockmap or sockhash in the kernel. Add a selftest which exercises this. Signed-off-by: Lorenz Bauer Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20200928090805.23343-5-lmb@cloudflare.com

selftests: bpf: Remove shared header from sockmap iter test

2020-09-28T23:48:02Z

The shared header to define SOCKMAP_MAX_ENTRIES is a bit overkill. Dynamically allocate the sock_fd array based on bpf_map__max_entries instead. Suggested-by: Yonghong Song Signed-off-by: Lorenz Bauer Signed-off-by: Alexei Starovoitov Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20200928090805.23343-4-lmb@cloudflare.com

selftests: bpf: Test iterating a sockmap

2020-09-10T19:35:26Z

Add a test that exercises a basic sockmap / sockhash iteration. For now we simply count the number of elements seen. Once sockmap update from iterators works we can extend this to perform a full copy. Signed-off-by: Lorenz Bauer Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20200909162712.221874-4-lmb@cloudflare.com