[NET]: Fix sparse warnings

Of this type, mostly:

CHECK   net/ipv6/netfilter.c
net/ipv6/netfilter.c:96:12: warning: symbol 'ipv6_netfilter_init' was not declared. Should it be static?
net/ipv6/netfilter.c:101:6: warning: symbol 'ipv6_netfilter_fini' was not declared. Should it be static?

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 files changed, 11 insertions, 59 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 20f52b5..5810f9d 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -859,10 +859,6 @@ static struct net_proto_family inet_family_ops = {
 	.owner	= THIS_MODULE,
 };
 
-
-extern void tcp_init(void);
-extern void tcp_v4_init(struct net_proto_family *);
-
 /* Upon startup we insert all the elements in inetsw_array[] into
  * the linked list inetsw.
  */
@@ -1132,7 +1128,6 @@ static int __init init_ipv4_mibs(void)
 }
 
 static int ipv4_proc_init(void);
-extern void ipfrag_init(void);
 
 /*
  *	IP protocol layer initialiser
@@ -1253,19 +1248,10 @@ module_init(inet_init);
 /* ------------------------------------------------------------------------ */
 
 #ifdef CONFIG_PROC_FS
-extern int  fib_proc_init(void);
-extern void fib_proc_exit(void);
 #ifdef CONFIG_IP_FIB_TRIE
 extern int  fib_stat_proc_init(void);
 extern void fib_stat_proc_exit(void);
 #endif
-extern int  ip_misc_proc_init(void);
-extern int  raw_proc_init(void);
-extern void raw_proc_exit(void);
-extern int  tcp4_proc_init(void);
-extern void tcp4_proc_exit(void);
-extern int  udp4_proc_init(void);
-extern void udp4_proc_exit(void);
 
 static int __init ipv4_proc_init(void)
 {
diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
index 3fd49f4..c1b42b5 100644
--- a/net/ipv4/datagram.c
+++ b/net/ipv4/datagram.c
@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/ip.h>
 #include <linux/in.h>
+#include <net/ip.h>
 #include <net/sock.h>
 #include <net/route.h>
 #include <net/tcp_states.h>
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 3c513ce..4410b9d 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -20,6 +20,7 @@
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/net.h>
+#include <net/ip.h>
 #include <net/inetpeer.h>
 
 /*
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index ddb1aed..aca088b 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -614,7 +614,6 @@ int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
 		}
 		case IP_MSFILTER:
 		{
-			extern int sysctl_optmem_max;
 			extern int sysctl_igmp_max_msf;
 			struct ip_msfilter *msf;
 
@@ -769,7 +768,6 @@ int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval,
 		}
 		case MCAST_MSFILTER:
 		{
-			extern int sysctl_optmem_max;
 			extern int sysctl_igmp_max_msf;
 			struct sockaddr_in *psin;
 			struct ip_msfilter *msf = NULL;
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 3eadbb2..f7943ba 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -59,9 +59,6 @@ static int fold_prot_inuse(struct proto *proto)
  */
 static int sockstat_seq_show(struct seq_file *seq, void *v)
 {
-	/* From net/socket.c */
-	extern void socket_seq_show(struct seq_file *seq);
-
 	socket_seq_show(seq);
 	seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
 		   fold_prot_inuse(&tcp_prot), atomic_read(&tcp_orphan_count),
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 8692cb9..a34e60e 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -169,8 +169,6 @@ static inline int cookie_check(struct sk_buff *skb, __u32 cookie)
 	return mssind < NUM_MSS ? msstab[mssind] + 1 : 0;
 }
 
-extern struct request_sock_ops tcp_request_sock_ops;
-
 static inline struct sock *get_cookie_sock(struct sock *sk, struct sk_buff *skb,
 					   struct request_sock *req,
 					   struct dst_entry *dst)
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index ce47a34..6526856 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -11,7 +11,9 @@
 #include <linux/module.h>
 #include <linux/sysctl.h>
 #include <linux/config.h>
+#include <linux/igmp.h>
 #include <net/snmp.h>
+#include <net/icmp.h>
 #include <net/ip.h>
 #include <net/route.h>
 #include <net/tcp.h>
@@ -19,36 +21,6 @@
 /* From af_inet.c */
 extern int sysctl_ip_nonlocal_bind;
 
-/* From icmp.c */
-extern int sysctl_icmp_echo_ignore_all;
-extern int sysctl_icmp_echo_ignore_broadcasts;
-extern int sysctl_icmp_ignore_bogus_error_responses;
-extern int sysctl_icmp_errors_use_inbound_ifaddr;
-
-/* From ip_fragment.c */
-extern int sysctl_ipfrag_low_thresh;
-extern int sysctl_ipfrag_high_thresh; 
-extern int sysctl_ipfrag_time;
-extern int sysctl_ipfrag_secret_interval;
-
-/* From ip_output.c */
-extern int sysctl_ip_dynaddr;
-
-/* From icmp.c */
-extern int sysctl_icmp_ratelimit;
-extern int sysctl_icmp_ratemask;
-
-/* From igmp.c */
-extern int sysctl_igmp_max_memberships;
-extern int sysctl_igmp_max_msf;
-
-/* From inetpeer.c */
-extern int inet_peer_threshold;
-extern int inet_peer_minttl;
-extern int inet_peer_maxttl;
-extern int inet_peer_gc_mintime;
-extern int inet_peer_gc_maxtime;
-
 #ifdef CONFIG_SYSCTL
 static int tcp_retr1_max = 255; 
 static int ip_local_port_range_min[] = { 1, 1 };
@@ -57,8 +29,6 @@ static int ip_local_port_range_max[] = { 65535, 65535 };
 
 struct ipv4_config ipv4_config;
 
-extern ctl_table ipv4_route_table[];
-
 #ifdef CONFIG_SYSCTL
 
 static
@@ -136,10 +106,11 @@ static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file *
 	return ret;
 }
 
-int sysctl_tcp_congestion_control(ctl_table *table, int __user *name, int nlen,
-				  void __user *oldval, size_t __user *oldlenp,
-				  void __user *newval, size_t newlen,
-				  void **context)
+static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name,
+					 int nlen, void __user *oldval,
+					 size_t __user *oldlenp,
+					 void __user *newval, size_t newlen,
+					 void **context)
 {
 	char val[TCP_CA_NAME_MAX];
 	ctl_table tbl = {
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index ebb8654..1afb080 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -4229,7 +4229,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 				 */
 				if (tp->rx_opt.saw_tstamp && tp->rx_opt.rcv_tsecr &&
 				    !tp->srtt)
-					tcp_ack_saw_tstamp(sk, 0, 0);
+					tcp_ack_saw_tstamp(sk, NULL, 0);
 
 				if (tp->rx_opt.tstamp_ok)
 					tp->advmss -= TCPOLEN_TSTAMP_ALIGNED;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 97bbf59..13dfb39 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -66,6 +66,7 @@
 #include <net/icmp.h>
 #include <net/inet_hashtables.h>
 #include <net/tcp.h>
+#include <net/transp_v6.h>
 #include <net/ipv6.h>
 #include <net/inet_common.h>
 #include <net/xfrm.h>
@@ -76,7 +77,6 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 
-extern int sysctl_ip_dynaddr;
 int sysctl_tcp_tw_reuse;
 int sysctl_tcp_low_latency;