bpf: Fix build error without CONFIG_NET

If CONFIG_NET is n, building fails:

kernel/trace/bpf_trace.o: In function `raw_tp_prog_func_proto':
bpf_trace.c:(.text+0x1a34): undefined reference to `bpf_skb_output_proto'

Wrap it into a #ifdef to fix this.

Fixes: a7658e1a4164 ("bpf: Check types of arguments passed into helpers")
Reported-by: Hulk Robot <[email protected]>
Signed-off-by: YueHaibing <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]

0 files changed, 0 insertions, 0 deletions