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libbpf: Support sysctl hook

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Support BPF_PROG_TYPE_CGROUP_SYSCTL program in libbpf: identifying
program and attach types by section name, probe.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrey Ignatov 2019-03-08 09:15:26 -08:00 committed by Alexei Starovoitov
parent 196398d4c0
commit 063cc9f06e
2 changed files with 4 additions and 0 deletions
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3
tools/lib/bpf/libbpf.c
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@ -2064,6 +2064,7 @@ static bool bpf_prog_type__needs_kver(enum bpf_prog_type type)
case BPF_PROG_TYPE_TRACEPOINT: case BPF_PROG_TYPE_TRACEPOINT:
case BPF_PROG_TYPE_RAW_TRACEPOINT: case BPF_PROG_TYPE_RAW_TRACEPOINT:
case BPF_PROG_TYPE_PERF_EVENT: case BPF_PROG_TYPE_PERF_EVENT:
case BPF_PROG_TYPE_CGROUP_SYSCTL:
return false; return false;
case BPF_PROG_TYPE_KPROBE: case BPF_PROG_TYPE_KPROBE:
default: default:
@ -3004,6 +3005,8 @@ static const struct {
BPF_CGROUP_UDP4_SENDMSG), BPF_CGROUP_UDP4_SENDMSG),
BPF_EAPROG_SEC("cgroup/sendmsg6", BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_EAPROG_SEC("cgroup/sendmsg6", BPF_PROG_TYPE_CGROUP_SOCK_ADDR,
BPF_CGROUP_UDP6_SENDMSG), BPF_CGROUP_UDP6_SENDMSG),
BPF_EAPROG_SEC("cgroup/sysctl", BPF_PROG_TYPE_CGROUP_SYSCTL,
BPF_CGROUP_SYSCTL),
}; };
#undef BPF_PROG_SEC_IMPL #undef BPF_PROG_SEC_IMPL

1
tools/lib/bpf/libbpf_probes.c
View File

@ -97,6 +97,7 @@ probe_load(enum bpf_prog_type prog_type, const struct bpf_insn *insns,
case BPF_PROG_TYPE_LIRC_MODE2: case BPF_PROG_TYPE_LIRC_MODE2:
case BPF_PROG_TYPE_SK_REUSEPORT: case BPF_PROG_TYPE_SK_REUSEPORT:
case BPF_PROG_TYPE_FLOW_DISSECTOR: case BPF_PROG_TYPE_FLOW_DISSECTOR:
case BPF_PROG_TYPE_CGROUP_SYSCTL:
default: default:
break; break;
} }