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2021-08-15selftest/bpf: Implement sample UNIX domain socket iterator program.Kuniyuki Iwashima
The iterator can output almost the same result compared to /proc/net/unix. The header line is aligned, and the Inode column uses "%8lu" because "%5lu" can be easily overflown. # cat /sys/fs/bpf/unix Num RefCount Protocol Flags Type St Inode Path ffff963c06689800: 00000002 00000000 00010000 0001 01 18697 private/defer ffff963c7c979c00: 00000002 00000000 00000000 0001 01 598245 @Hello@World@ # cat /proc/net/unix Num RefCount Protocol Flags Type St Inode Path ffff963c06689800: 00000002 00000000 00010000 0001 01 18697 private/defer ffff963c7c979c00: 00000002 00000000 00000000 0001 01 598245 @Hello@World@ Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210814015718.42704-4-kuniyu@amazon.co.jp
2021-02-12selftests/bpf: Add test for bpf_iter_task_vmaSong Liu
The test dumps information similar to /proc/pid/maps. The first line of the output is compared against the /proc file to make sure they match. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210212183107.50963-4-songliubraving@fb.com
2020-09-29selftests/bpf: Ensure snprintf_btf/bpf_iter tests compatibility with old ↵Alan Maguire
vmlinux.h Andrii reports that bpf selftests relying on "struct btf_ptr" and BTF_F_* values will not build as vmlinux.h for older kernels will not include "struct btf_ptr" or the BTF_F_* enum values. Undefine and redefine them to work around this. Fixes: b72091bd4ee4 ("selftests/bpf: Add test for bpf_seq_printf_btf helper") Fixes: 076a95f5aff2 ("selftests/bpf: Add bpf_snprintf_btf helper tests") Reported-by: Andrii Nakryiko <andrii.nakryiko@gmail.com> Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/1601379151-21449-3-git-send-email-alan.maguire@oracle.com
2020-09-10selftests: bpf: Test iterating a sockmapLorenz Bauer
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
2020-07-28selftests/bpf: Add new bpf_iter context structs to fix build on old kernelsAndrii Nakryiko
Add bpf_iter__bpf_map_elem and bpf_iter__bpf_sk_storage_map to bpf_iter.h. Fixes: 3b1c420bd882 ("selftests/bpf: Add a test for bpf sk_storage_map iterator") Fixes: 2a7c2fff7dd6 ("selftests/bpf: Add test for bpf hash map iterators") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200727233345.1686358-1-andriin@fb.com
2020-06-24selftests/bpf: Implement sample udp/udp6 bpf_iter programsYonghong Song
On my VM, I got identical results between /proc/net/udp[6] and the udp{4,6} bpf iterator. For udp6: $ cat /sys/fs/bpf/p1 sl local_address remote_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops 1405: 000080FE00000000FF7CC4D0D9EFE4FE:0222 00000000000000000000000000000000:0000 07 00000000:00000000 00:00000000 00000000 193 0 19183 2 0000000029eab111 0 $ cat /proc/net/udp6 sl local_address remote_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops 1405: 000080FE00000000FF7CC4D0D9EFE4FE:0222 00000000000000000000000000000000:0000 07 00000000:00000000 00:00000000 00000000 193 0 19183 2 0000000029eab111 0 For udp4: $ cat /sys/fs/bpf/p4 sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops 2007: 00000000:1F90 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 72540 2 000000004ede477a 0 $ cat /proc/net/udp sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops 2007: 00000000:1F90 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 72540 2 000000004ede477a 0 Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20200623230822.3989299-1-yhs@fb.com
2020-06-24selftests/bpf: Implement sample tcp/tcp6 bpf_iter programsYonghong Song
In my VM, I got identical result compared to /proc/net/{tcp,tcp6}. For tcp6: $ cat /proc/net/tcp6 sl local_address remote_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode 0: 00000000000000000000000000000000:0016 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000001 00000000 0 0 17955 1 000000003eb3102e 100 0 0 10 0 $ cat /sys/fs/bpf/p1 sl local_address remote_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode 0: 00000000000000000000000000000000:0016 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 17955 1 000000003eb3102e 100 0 0 10 0 For tcp: $ cat /proc/net/tcp sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode 0: 00000000:0016 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 2666 1 000000007152e43f 100 0 0 10 0 $ cat /sys/fs/bpf/p2 sl local_address remote_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode 1: 00000000:0016 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 2666 1 000000007152e43f 100 0 0 10 0 Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20200623230820.3989165-1-yhs@fb.com
2020-06-24selftests/bpf: Move newer bpf_iter_* type redefining to a new header fileYonghong Song
Commit b9f4c01f3e0b ("selftest/bpf: Make bpf_iter selftest compilable against old vmlinux.h") and Commit dda18a5c0b75 ("selftests/bpf: Convert bpf_iter_test_kern{3, 4}.c to define own bpf_iter_meta") redefined newly introduced types in bpf programs so the bpf program can still compile properly with old kernels although loading may fail. Since this patch set introduced new types and the same workaround is needed, so let us move the workaround to a separate header file so they do not clutter bpf programs. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20200623230816.3988656-1-yhs@fb.com
generated by cgit (git 2.34.1) at 2025-04-24 18:32:57 +0000