In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding multiple break statements instead of just
letting the code fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavo...@kernel.org>
---
 net/netfilter/nf_conntrack_proto_dccp.c | 1 +
 net/netfilter/nf_tables_api.c           | 1 +
 net/netfilter/nft_ct.c                  | 1 +
 3 files changed, 3 insertions(+)

diff --git a/net/netfilter/nf_conntrack_proto_dccp.c 
b/net/netfilter/nf_conntrack_proto_dccp.c
index b3f4a334f9d7..94001eb51ffe 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -397,6 +397,7 @@ dccp_new(struct nf_conn *ct, const struct sk_buff *skb,
                        msg = "not picking up existing connection ";
                        goto out_invalid;
                }
+               break;
        case CT_DCCP_REQUEST:
                break;
        case CT_DCCP_INVALID:
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 0f58e98542be..78d0bbc8868c 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -8342,6 +8342,7 @@ static int nf_tables_check_loops(const struct nft_ctx 
*ctx,
                                                        data->verdict.chain);
                                if (err < 0)
                                        return err;
+                               break;
                        default:
                                break;
                        }
diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c
index 322bd674963e..fec68b75f39a 100644
--- a/net/netfilter/nft_ct.c
+++ b/net/netfilter/nft_ct.c
@@ -530,6 +530,7 @@ static void __nft_ct_set_destroy(const struct nft_ctx *ctx, 
struct nft_ct *priv)
        case NFT_CT_ZONE:
                if (--nft_ct_pcpu_template_refcnt == 0)
                        nft_ct_tmpl_put_pcpu();
+               break;
 #endif
        default:
                break;
-- 
2.27.0

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