mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 16:38:12 +00:00
3e689141e6
Fix all selftests to include libbpf header files with the bpf/ prefix, to
be consistent with external users of the library. Also ensure that all
includes of exported libbpf header files (those that are exported on 'make
install' of the library) use bracketed includes instead of quoted.
To not break the build, keep the old include path until everything has been
changed to the new one; a subsequent patch will remove that.
Fixes: 6910d7d386 ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560568.1683545.9649335788846513446.stgit@toke.dk
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#include <linux/bpf.h>
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#include <linux/if_ether.h>
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#include <linux/pkt_cls.h>
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#include <bpf/bpf_helpers.h>
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#define __round_mask(x, y) ((__typeof__(x))((y) - 1))
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#define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
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#define ctx_ptr(ctx, mem) (void *)(unsigned long)ctx->mem
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SEC("t")
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int ing_cls(struct __sk_buff *ctx)
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{
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__u8 *data, *data_meta, *data_end;
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__u32 diff = 0;
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data_meta = ctx_ptr(ctx, data_meta);
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data_end = ctx_ptr(ctx, data_end);
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data = ctx_ptr(ctx, data);
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if (data + ETH_ALEN > data_end ||
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data_meta + round_up(ETH_ALEN, 4) > data)
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return TC_ACT_SHOT;
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diff |= ((__u32 *)data_meta)[0] ^ ((__u32 *)data)[0];
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diff |= ((__u16 *)data_meta)[2] ^ ((__u16 *)data)[2];
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return diff ? TC_ACT_SHOT : TC_ACT_OK;
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}
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SEC("x")
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int ing_xdp(struct xdp_md *ctx)
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{
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__u8 *data, *data_meta, *data_end;
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int ret;
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ret = bpf_xdp_adjust_meta(ctx, -round_up(ETH_ALEN, 4));
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if (ret < 0)
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return XDP_DROP;
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data_meta = ctx_ptr(ctx, data_meta);
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data_end = ctx_ptr(ctx, data_end);
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data = ctx_ptr(ctx, data);
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if (data + ETH_ALEN > data_end ||
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data_meta + round_up(ETH_ALEN, 4) > data)
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return XDP_DROP;
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__builtin_memcpy(data_meta, data, ETH_ALEN);
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return XDP_PASS;
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}
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char _license[] SEC("license") = "GPL";
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