bpf, verifier: Use fallthrough pseudo-keyword

Replace /* fallthrough */ comments with the new pseudo-keyword
macro fallthrough [1].

  [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20201002234217.GA12280@embeddedor

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index d9dbf271ebabdf31fdc80fecc877fadcc0300787..01120acab09a825ee7fa00dbbabd15d776cf1030 100644 (file)
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -2673,7 +2673,7 @@ static bool may_access_direct_pkt_data(struct bpf_verifier_env *env,
        case BPF_PROG_TYPE_CGROUP_SKB:
                if (t == BPF_WRITE)
                        return false;
-               /* fallthrough */
+               fallthrough;
 
        /* Program types with direct read + write access go here! */
        case BPF_PROG_TYPE_SCHED_CLS:
@@ -5475,7 +5475,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
                /* smin_val represents the known value */
                if (known && smin_val == 0 && opcode == BPF_ADD)
                        break;
-               /* fall-through */
+               fallthrough;
        case PTR_TO_PACKET_END:
        case PTR_TO_SOCKET:
        case PTR_TO_SOCKET_OR_NULL: