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e626a13f6f
Drop bpf_iter.h header which uses vmlinux.h but re-defines a bunch of iterator structures and some of BPF constants for use in BPF iterator selftests. None of that is necessary when fresh vmlinux.h header is generated for vmlinux image that matches latest selftests. So drop ugly hacks and have a nice plain vmlinux.h usage everywhere. We could do the same with all the kfunc __ksym redefinitions, but that has dependency on very fresh pahole, so I'm not addressing that here. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20241029203919.1948941-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2020 Facebook */
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#include <vmlinux.h>
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#include <bpf/bpf_helpers.h>
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char _license[] SEC("license") = "GPL";
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__u32 map1_id = 0, map2_id = 0;
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__u32 map1_accessed = 0, map2_accessed = 0;
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__u64 map1_seqnum = 0, map2_seqnum1 = 0, map2_seqnum2 = 0;
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volatile const __u32 print_len;
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volatile const __u32 ret1;
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SEC("iter/bpf_map")
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int dump_bpf_map(struct bpf_iter__bpf_map *ctx)
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{
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struct seq_file *seq = ctx->meta->seq;
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struct bpf_map *map = ctx->map;
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__u64 seq_num;
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int i, ret = 0;
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if (map == (void *)0)
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return 0;
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/* only dump map1_id and map2_id */
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if (map->id != map1_id && map->id != map2_id)
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return 0;
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seq_num = ctx->meta->seq_num;
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if (map->id == map1_id) {
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map1_seqnum = seq_num;
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map1_accessed++;
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}
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if (map->id == map2_id) {
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if (map2_accessed == 0) {
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map2_seqnum1 = seq_num;
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if (ret1)
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ret = 1;
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} else {
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map2_seqnum2 = seq_num;
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}
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map2_accessed++;
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}
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/* fill seq_file buffer */
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for (i = 0; i < (int)print_len; i++)
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bpf_seq_write(seq, &seq_num, sizeof(seq_num));
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return ret;
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}
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