netfilter: remove "#ifdef __KERNEL__" guards from some headers.

A number of non-UAPI Netfilter header-files contained superfluous
"#ifdef __KERNEL__" guards.  Removed them.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

include/linux/netfilter/nf_conntrack_dccp.h

@@ -25,7 +25,6 @@ enum ct_dccp_roles {
 };
 #define CT_DCCP_ROLE_MAX	(__CT_DCCP_ROLE_MAX - 1)
 
-#ifdef __KERNEL__
 #include <linux/netfilter/nf_conntrack_tuple_common.h>
 
 struct nf_ct_dccp {
@@ -36,6 +35,4 @@ struct nf_ct_dccp {
 	u_int64_t	handshake_seq;
 };
 
-#endif /* __KERNEL__ */
-
 #endif /* _NF_CONNTRACK_DCCP_H */

include/linux/netfilter/nf_conntrack_h323.h

@@ -2,8 +2,6 @@
 #ifndef _NF_CONNTRACK_H323_H
 #define _NF_CONNTRACK_H323_H
 
-#ifdef __KERNEL__
-
 #include <linux/netfilter.h>
 #include <linux/skbuff.h>
 #include <linux/types.h>
@@ -97,5 +95,3 @@ extern int (*nat_q931_hook) (struct sk_buff *skb, struct nf_conn *ct,
 			     struct nf_conntrack_expect *exp);
 
 #endif
-
-#endif

include/linux/netfilter/nf_conntrack_irc.h

@@ -2,8 +2,6 @@
 #ifndef _NF_CONNTRACK_IRC_H
 #define _NF_CONNTRACK_IRC_H
 
-#ifdef __KERNEL__
-
 #include <linux/netfilter.h>
 #include <linux/skbuff.h>
 #include <net/netfilter/nf_conntrack_expect.h>
@@ -17,5 +15,4 @@ extern unsigned int (*nf_nat_irc_hook)(struct sk_buff *skb,
 				       unsigned int matchlen,
 				       struct nf_conntrack_expect *exp);
 
-#endif /* __KERNEL__ */
 #endif /* _NF_CONNTRACK_IRC_H */

include/linux/netfilter/nf_conntrack_pptp.h

@@ -50,8 +50,6 @@ struct nf_nat_pptp {
 	__be16 pac_call_id;			/* NAT'ed PAC call id */
 };
 
-#ifdef __KERNEL__
-
 #define PPTP_CONTROL_PORT	1723
 
 #define PPTP_PACKET_CONTROL	1
@@ -324,5 +322,4 @@ extern void
 (*nf_nat_pptp_hook_expectfn)(struct nf_conn *ct,
 			     struct nf_conntrack_expect *exp);
 
-#endif /* __KERNEL__ */
 #endif /* _NF_CONNTRACK_PPTP_H */

include/linux/netfilter/nf_conntrack_proto_gre.h

@@ -10,7 +10,6 @@ struct nf_ct_gre {
 	unsigned int timeout;
 };
 
-#ifdef __KERNEL__
 #include <net/netfilter/nf_conntrack_tuple.h>
 
 struct nf_conn;
@@ -32,5 +31,4 @@ void nf_ct_gre_keymap_destroy(struct nf_conn *ct);
 
 bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
 		      struct net *net, struct nf_conntrack_tuple *tuple);
-#endif /* __KERNEL__ */
 #endif /* _CONNTRACK_PROTO_GRE_H */

include/linux/netfilter/nf_conntrack_sane.h

@@ -3,8 +3,6 @@
 #define _NF_CONNTRACK_SANE_H
 /* SANE tracking. */
 
-#ifdef __KERNEL__
-
 #define SANE_PORT	6566
 
 enum sane_state {
@@ -17,6 +15,4 @@ struct nf_ct_sane_master {
 	enum sane_state state;
 };
 
-#endif /* __KERNEL__ */
-
 #endif /* _NF_CONNTRACK_SANE_H */

include/linux/netfilter/nf_conntrack_sip.h

 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __NF_CONNTRACK_SIP_H__
 #define __NF_CONNTRACK_SIP_H__
-#ifdef __KERNEL__
 
 #include <linux/skbuff.h>
 #include <linux/types.h>
@@ -196,5 +195,4 @@ int ct_sip_get_sdp_header(const struct nf_conn *ct, const char *dptr,
 			  enum sdp_header_types term,
 			  unsigned int *matchoff, unsigned int *matchlen);
 
-#endif /* __KERNEL__ */
 #endif /* __NF_CONNTRACK_SIP_H__ */