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3 Commits

Author SHA1 Message Date
Lorenz Bauer
5b87adc3ce selftest: bpf: Test copying a sockmap and sockhash 
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 <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200928090805.23343-5-lmb@cloudflare.com
 2020-09-28 16:48:02 -07:00
Lorenz Bauer
2787031733 selftests: bpf: Remove shared header from sockmap iter test 
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 <yhs@fb.com>
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200928090805.23343-4-lmb@cloudflare.com
 2020-09-28 16:48:02 -07:00
Lorenz Bauer
2f7de9865b selftests: bpf: Test iterating a sockmap 
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 <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200909162712.221874-4-lmb@cloudflare.com
 2020-09-10 12:35:26 -07:00