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| author | Eelco Chaudron <echaudro@redhat.com> | 2020-03-06 08:59:23 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-03-12 17:47:38 -0700 |
| commit | d831ee84bfc9173eecf30dbbc2553ae81b996c60 (patch) | |
| tree | 52c110beaf9330261d28ed885ea246cb66e39ee8 /kernel/trace | |
| parent | 4823b7210b90a10b88b0c56198f894b27a767509 (diff) | |
| download | linux-d831ee84bfc9173eecf30dbbc2553ae81b996c60.tar.gz linux-d831ee84bfc9173eecf30dbbc2553ae81b996c60.tar.bz2 linux-d831ee84bfc9173eecf30dbbc2553ae81b996c60.zip | |
bpf: Add bpf_xdp_output() helper
Introduce new helper that reuses existing xdp perf_event output
implementation, but can be called from raw_tracepoint programs
that receive 'struct xdp_buff *' as a tracepoint argument.
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/158348514556.2239.11050972434793741444.stgit@xdp-tutorial
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/bpf_trace.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index b5071c7e93ca..e619eedb5919 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -1145,6 +1145,7 @@ static const struct bpf_func_proto bpf_perf_event_output_proto_raw_tp = { }; extern const struct bpf_func_proto bpf_skb_output_proto; +extern const struct bpf_func_proto bpf_xdp_output_proto; BPF_CALL_3(bpf_get_stackid_raw_tp, struct bpf_raw_tracepoint_args *, args, struct bpf_map *, map, u64, flags) @@ -1220,6 +1221,8 @@ tracing_prog_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) #ifdef CONFIG_NET case BPF_FUNC_skb_output: return &bpf_skb_output_proto; + case BPF_FUNC_xdp_output: + return &bpf_xdp_output_proto; #endif default: return raw_tp_prog_func_proto(func_id, prog); |