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0e8e60e86c
Add a small test case which adds two programs - one calling the other through a tailcall - and check that BPF rejects them in case of different expected_attach_type values: # ./vmtest.sh -- ./test_progs -t xdp_devmap [...] #641/1 xdp_devmap_attach/DEVMAP with programs in entries:OK #641/2 xdp_devmap_attach/DEVMAP with frags programs in entries:OK #641/3 xdp_devmap_attach/Verifier check of DEVMAP programs:OK #641/4 xdp_devmap_attach/DEVMAP with programs in entries on veth:OK #641 xdp_devmap_attach:OK Summary: 2/4 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/r/20250926171201.188490-2-daniel@iogearbox.net Signed-off-by: Alexei Starovoitov <ast@kernel.org>
30 lines
508 B
C
30 lines
508 B
C
// SPDX-License-Identifier: GPL-2.0
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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SEC("xdp")
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int xdp_devmap(struct xdp_md *ctx)
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{
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return ctx->egress_ifindex;
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}
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struct {
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__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
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__uint(max_entries, 1);
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__uint(key_size, sizeof(__u32));
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__array(values, int (void *));
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} xdp_map SEC(".maps") = {
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.values = {
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[0] = (void *)&xdp_devmap,
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},
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};
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SEC("xdp")
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int xdp_entry(struct xdp_md *ctx)
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{
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bpf_tail_call(ctx, &xdp_map, 0);
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return 0;
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}
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