net: core: filter: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Warning level 2 was used: -Wimplicit-fallthrough=2

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/filter.c b/net/core/filter.c
index 547fd34..b9ec916 100644 (file)
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -4660,6 +4660,7 @@ bpf_base_func_proto(enum bpf_func_id func_id)
        case BPF_FUNC_trace_printk:
                if (capable(CAP_SYS_ADMIN))
                        return bpf_get_trace_printk_proto();
+               /* else: fall through */
        default:
                return NULL;
        }