c22bdd2825
Convert all SEC("classifier*") uses to a new and strict SEC("tc")
section name. In reference_tracking selftests switch from ambiguous
searching by program title (section name) to non-ambiguous searching by
name in some selftests, getting closer to completely removing
bpf_object__find_program_by_title().
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-4-andrii@kernel.org
47 lines
954 B
C
47 lines
954 B
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2021 Facebook */
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_tcp_helpers.h"
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extern int bpf_kfunc_call_test2(struct sock *sk, __u32 a, __u32 b) __ksym;
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extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b,
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__u32 c, __u64 d) __ksym;
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SEC("tc")
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int kfunc_call_test2(struct __sk_buff *skb)
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{
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struct bpf_sock *sk = skb->sk;
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if (!sk)
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return -1;
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sk = bpf_sk_fullsock(sk);
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if (!sk)
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return -1;
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return bpf_kfunc_call_test2((struct sock *)sk, 1, 2);
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}
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SEC("tc")
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int kfunc_call_test1(struct __sk_buff *skb)
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{
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struct bpf_sock *sk = skb->sk;
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__u64 a = 1ULL << 32;
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__u32 ret;
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if (!sk)
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return -1;
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sk = bpf_sk_fullsock(sk);
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if (!sk)
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return -1;
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a = bpf_kfunc_call_test1((struct sock *)sk, 1, a | 2, 3, a | 4);
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ret = a >> 32; /* ret should be 2 */
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ret += (__u32)a; /* ret should be 12 */
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return ret;
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}
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char _license[] SEC("license") = "GPL";
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