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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c new file mode 100644 index 000000000..ee49493dc --- /dev/null +++ b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern4.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2020 Facebook */ +#include "bpf_iter.h" +#include <bpf/bpf_helpers.h> + +char _license[] SEC("license") = "GPL"; + +__u32 map1_id = 0, map2_id = 0; +__u32 map1_accessed = 0, map2_accessed = 0; +__u64 map1_seqnum = 0, map2_seqnum1 = 0, map2_seqnum2 = 0; + +static volatile const __u32 print_len; +static volatile const __u32 ret1; + +SEC("iter/bpf_map") +int dump_bpf_map(struct bpf_iter__bpf_map *ctx) +{ + struct seq_file *seq = ctx->meta->seq; + struct bpf_map *map = ctx->map; + __u64 seq_num; + int i, ret = 0; + + if (map == (void *)0) + return 0; + + /* only dump map1_id and map2_id */ + if (map->id != map1_id && map->id != map2_id) + return 0; + + seq_num = ctx->meta->seq_num; + if (map->id == map1_id) { + map1_seqnum = seq_num; + map1_accessed++; + } + + if (map->id == map2_id) { + if (map2_accessed == 0) { + map2_seqnum1 = seq_num; + if (ret1) + ret = 1; + } else { + map2_seqnum2 = seq_num; + } + map2_accessed++; + } + + /* fill seq_file buffer */ + for (i = 0; i < print_len; i++) + bpf_seq_write(seq, &seq_num, sizeof(seq_num)); + + return ret; +} |