net: dccp: mark expected switch fall-throughs

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

Notice that for options.c file, I placed the "fall through" comment
on its own line, which is what GCC is expecting to find.

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

2 files changed, 2 insertions, 1 deletions

diff --git a/net/dccp/input.c b/net/dccp/input.c
index fa6be9750bb4..d28d46bff6ab 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -534,6 +534,7 @@ static int dccp_rcv_respond_partopen_state_process(struct sock *sk,
         case DCCP_PKT_DATA:
                 if (sk->sk_state == DCCP_RESPOND)
                         break;
+                /* fall through */
         case DCCP_PKT_DATAACK:
         case DCCP_PKT_ACK:
                 /*
diff --git a/net/dccp/options.c b/net/dccp/options.c
index 51cdfc3bd8ca..4e40db017e19 100644
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -227,8 +227,8 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
                          * Ack vectors are processed by the TX CCID if it is
                          * interested. The RX CCID need not parse Ack Vectors,
                          * since it is only interested in clearing old state.
-                         * Fall through.
                          */
+                        /* fall through */
                 case DCCPO_MIN_TX_CCID_SPECIFIC ... DCCPO_MAX_TX_CCID_SPECIFIC:
                         if (ccid_hc_tx_parse_options(dp->dccps_hc_tx_ccid, sk,
                                                      pkt_type, opt, value, len))