net: rxrpc: mark expected switch fall-throughs

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

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 054e328..344b2dc 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -246,6 +246,7 @@
 			ret = 0;
 			break;
 		}
+		/* Fall through */
 	default:
 		ret = -EBUSY;
 		break;
@@ -560,6 +561,7 @@
 			m->msg_name = &rx->connect_srx;
 			m->msg_namelen = sizeof(rx->connect_srx);
 		}
+		/* Fall through */
 	case RXRPC_SERVER_BOUND:
 	case RXRPC_SERVER_LISTENING:
 		ret = rxrpc_do_sendmsg(rx, m, len);
diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c
index e56e23e..1e37eb1 100644
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -1125,6 +1125,7 @@
 	case RXRPC_PACKET_TYPE_BUSY:
 		if (sp->hdr.flags & RXRPC_CLIENT_INITIATED)
 			goto discard;
+		/* Fall through */
 
 	case RXRPC_PACKET_TYPE_DATA:
 		if (sp->hdr.callNumber == 0)
diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c
index 2d9edc6..7d25955 100644
--- a/net/rxrpc/sendmsg.c
+++ b/net/rxrpc/sendmsg.c
@@ -220,6 +220,7 @@
 					  ktime_get_real());
 			if (!last)
 				break;
+			/* Fall through */
 		case RXRPC_CALL_SERVER_SEND_REPLY:
 			call->state = RXRPC_CALL_SERVER_AWAIT_ACK;
 			rxrpc_notify_end_tx(rx, call, notify_end_tx);