netfilter: nf_reject: remove unneeded exports

These functions have no external callers and can be static.

Signed-off-by: Florian Westphal <[e-mail]>

include/net/netfilter/ipv4/nf_reject.h

···
 void nf_send_unreach(struct sk_buff *skb_in, int code, int hook);
 void nf_send_reset(struct net *net, struct sock *, struct sk_buff *oldskb,
 		   int hook);
-const struct tcphdr *nf_reject_ip_tcphdr_get(struct sk_buff *oldskb,
-					     struct tcphdr *_oth, int hook);
-struct iphdr *nf_reject_iphdr_put(struct sk_buff *nskb,
-				  const struct sk_buff *oldskb,
-				  __u8 protocol, int ttl);
-void nf_reject_ip_tcphdr_put(struct sk_buff *nskb, const struct sk_buff *oldskb,
-			     const struct tcphdr *oth);
-
 struct sk_buff *nf_reject_skb_v4_unreach(struct net *net,
                                          struct sk_buff *oldskb,
                                          const struct net_device *dev,

include/net/netfilter/ipv6/nf_reject.h

···
 		      unsigned int hooknum);
 void nf_send_reset6(struct net *net, struct sock *sk, struct sk_buff *oldskb,
 		    int hook);
-const struct tcphdr *nf_reject_ip6_tcphdr_get(struct sk_buff *oldskb,
-					      struct tcphdr *otcph,
-					      unsigned int *otcplen, int hook);
-struct ipv6hdr *nf_reject_ip6hdr_put(struct sk_buff *nskb,
-				     const struct sk_buff *oldskb,
-				     __u8 protocol, int hoplimit);
-void nf_reject_ip6_tcphdr_put(struct sk_buff *nskb,
-			      const struct sk_buff *oldskb,
-			      const struct tcphdr *oth, unsigned int otcplen);
-
 struct sk_buff *nf_reject_skb_v6_tcp_reset(struct net *net,
 					   struct sk_buff *oldskb,
 					   const struct net_device *dev,

net/ipv4/netfilter/nf_reject_ipv4.c

···
 #include <linux/netfilter_ipv4.h>
 #include <linux/netfilter_bridge.h>
 
+static struct iphdr *nf_reject_iphdr_put(struct sk_buff *nskb,
+					 const struct sk_buff *oldskb,
+					 __u8 protocol, int ttl);
+static void nf_reject_ip_tcphdr_put(struct sk_buff *nskb, const struct sk_buff *oldskb,
+				    const struct tcphdr *oth);
+static const struct tcphdr *
+nf_reject_ip_tcphdr_get(struct sk_buff *oldskb,
+			struct tcphdr *_oth, int hook);
+
 static int nf_reject_iphdr_validate(struct sk_buff *skb)
 {
 	struct iphdr *iph;
···
 }
 EXPORT_SYMBOL_GPL(nf_reject_skb_v4_unreach);
 
-const struct tcphdr *nf_reject_ip_tcphdr_get(struct sk_buff *oldskb,
-					     struct tcphdr *_oth, int hook)
+static const struct tcphdr *
+nf_reject_ip_tcphdr_get(struct sk_buff *oldskb,
+			struct tcphdr *_oth, int hook)
 {
 	const struct tcphdr *oth;
 
···
 
 	return oth;
 }
-EXPORT_SYMBOL_GPL(nf_reject_ip_tcphdr_get);
 
-struct iphdr *nf_reject_iphdr_put(struct sk_buff *nskb,
-				  const struct sk_buff *oldskb,
-				  __u8 protocol, int ttl)
+static struct iphdr *nf_reject_iphdr_put(struct sk_buff *nskb,
+					 const struct sk_buff *oldskb,
+					 __u8 protocol, int ttl)
 {
 	struct iphdr *niph, *oiph = ip_hdr(oldskb);
 
···
 
 	return niph;
 }
-EXPORT_SYMBOL_GPL(nf_reject_iphdr_put);
 
-void nf_reject_ip_tcphdr_put(struct sk_buff *nskb, const struct sk_buff *oldskb,
-			  const struct tcphdr *oth)
+static void nf_reject_ip_tcphdr_put(struct sk_buff *nskb, const struct sk_buff *oldskb,
+				    const struct tcphdr *oth)
 {
 	struct iphdr *niph = ip_hdr(nskb);
 	struct tcphdr *tcph;
···
 	nskb->csum_start = (unsigned char *)tcph - nskb->head;
 	nskb->csum_offset = offsetof(struct tcphdr, check);
 }
-EXPORT_SYMBOL_GPL(nf_reject_ip_tcphdr_put);
 
 static int nf_reject_fill_skb_dst(struct sk_buff *skb_in)
 {

net/ipv6/netfilter/nf_reject_ipv6.c

···
 #include <linux/netfilter_ipv6.h>
 #include <linux/netfilter_bridge.h>
 
+static struct ipv6hdr *
+nf_reject_ip6hdr_put(struct sk_buff *nskb,
+		     const struct sk_buff *oldskb,
+		     __u8 protocol, int hoplimit);
+static void
+nf_reject_ip6_tcphdr_put(struct sk_buff *nskb,
+			 const struct sk_buff *oldskb,
+			 const struct tcphdr *oth, unsigned int otcplen);
+static const struct tcphdr *
+nf_reject_ip6_tcphdr_get(struct sk_buff *oldskb,
+			 struct tcphdr *otcph,
+			 unsigned int *otcplen, int hook);
+
 static bool nf_reject_v6_csum_ok(struct sk_buff *skb, int hook)
 {
 	const struct ipv6hdr *ip6h = ipv6_hdr(skb);
···
 }
 EXPORT_SYMBOL_GPL(nf_reject_skb_v6_unreach);
 
-const struct tcphdr *nf_reject_ip6_tcphdr_get(struct sk_buff *oldskb,
-					      struct tcphdr *otcph,
-					      unsigned int *otcplen, int hook)
+static const struct tcphdr *
+nf_reject_ip6_tcphdr_get(struct sk_buff *oldskb,
+			 struct tcphdr *otcph,
+			 unsigned int *otcplen, int hook)
 {
 	const struct ipv6hdr *oip6h = ipv6_hdr(oldskb);
 	u8 proto;
···
 
 	return otcph;
 }
-EXPORT_SYMBOL_GPL(nf_reject_ip6_tcphdr_get);
 
-struct ipv6hdr *nf_reject_ip6hdr_put(struct sk_buff *nskb,
-				     const struct sk_buff *oldskb,
-				     __u8 protocol, int hoplimit)
+static struct ipv6hdr *
+nf_reject_ip6hdr_put(struct sk_buff *nskb,
+		     const struct sk_buff *oldskb,
+		     __u8 protocol, int hoplimit)
 {
 	struct ipv6hdr *ip6h;
 	const struct ipv6hdr *oip6h = ipv6_hdr(oldskb);
···
 
 	return ip6h;
 }
-EXPORT_SYMBOL_GPL(nf_reject_ip6hdr_put);
 
-void nf_reject_ip6_tcphdr_put(struct sk_buff *nskb,
-			      const struct sk_buff *oldskb,
-			      const struct tcphdr *oth, unsigned int otcplen)
+static void
+nf_reject_ip6_tcphdr_put(struct sk_buff *nskb,
+			 const struct sk_buff *oldskb,
+			 const struct tcphdr *oth, unsigned int otcplen)
 {
 	struct tcphdr *tcph;
 
···
 				      csum_partial(tcph,
 						   sizeof(struct tcphdr), 0));
 }
-EXPORT_SYMBOL_GPL(nf_reject_ip6_tcphdr_put);
 
 static int nf_reject6_fill_skb_dst(struct sk_buff *skb_in)
 {