Move the IPv6 symbols into the ipv6 module

Currently, we're trying to export the IPv6 modules from netsyms.c,
which can't work when netsyms is built-in, but IPv6 is modular. Fix is to
move the IPv6 symbols to the ipv6 module. Actually, netsyms.c could use a
lot more of this kind of untangling.

Also, move exporting the secure_*v6* symbols to drivers/char/random.c, 
since that's where they're defined.

The reason why things worked before is that the ipv6 module doesn't have
a EXPORT_NO_SYMBOLS directive, so _all_ of its symbols where exported by
modutils.

drivers/char/random.c

@@ -2068,6 +2068,7 @@ __u32 secure_tcpv6_sequence_number(__u32 *saddr, __u32 *daddr,
 	seq += tv.tv_usec + tv.tv_sec*1000000;
 	return seq;
 }
+EXPORT_SYMBOL(secure_tcpv6_sequence_number);
 
 __u32 secure_ipv6_id(__u32 *daddr)
 {
@@ -2088,6 +2089,7 @@ __u32 secure_ipv6_id(__u32 *daddr)
 	return twothirdsMD4Transform(daddr, secret);
 }
 
+EXPORT_SYMBOL(secure_ipv6_id);
 #endif
 
 

net/ipv6/Makefile

@@ -9,11 +9,13 @@
 
 O_TARGET := ipv6.o
 
+export-objs :=  ipv6_syms.o
+
 obj-y :=	af_inet6.o ip6_output.o ip6_input.o addrconf.o sit.o \
 		route.o ip6_fib.o ipv6_sockglue.o ndisc.o udp.o raw.o \
 		protocol.o icmp.o mcast.o reassembly.o tcp_ipv6.o \
 		exthdrs.o sysctl_net_ipv6.o datagram.o proc.o \
-		ip6_flowlabel.o
+		ip6_flowlabel.o ipv6_syms.o
 
 obj-m  := $(O_TARGET)
 

net/ipv6/ipv6_syms.c

+
+#include <linux/module.h>
+#include <net/ipv6.h>
+#include <net/addrconf.h>
+#include <net/ip6_route.h>
+
+EXPORT_SYMBOL(ipv6_addr_type);
+EXPORT_SYMBOL(icmpv6_send);
+EXPORT_SYMBOL(ndisc_mc_map);
+EXPORT_SYMBOL(register_inet6addr_notifier);
+EXPORT_SYMBOL(unregister_inet6addr_notifier);
+EXPORT_SYMBOL(ip6_route_output);

net/netsyms.c

@@ -286,15 +286,6 @@ EXPORT_SYMBOL(dlci_ioctl_hook);
 #endif
 
 
-#ifdef CONFIG_IPV6
-EXPORT_SYMBOL(ipv6_addr_type);
-EXPORT_SYMBOL(icmpv6_send);
-EXPORT_SYMBOL(ndisc_mc_map);
-EXPORT_SYMBOL(register_inet6addr_notifier);
-EXPORT_SYMBOL(unregister_inet6addr_notifier);
-#include <net/ip6_route.h>
-EXPORT_SYMBOL(ip6_route_output);
-#endif
 #if defined (CONFIG_IPV6_MODULE) || defined (CONFIG_KHTTPD) || defined (CONFIG_KHTTPD_MODULE)
 /* inet functions common to v4 and v6 */
 EXPORT_SYMBOL(inet_release);
@@ -401,11 +392,6 @@ EXPORT_SYMBOL(sysctl_tcp_tw_recycle);
 EXPORT_SYMBOL(sysctl_max_syn_backlog);
 #endif
 
-#if defined (CONFIG_IPV6_MODULE)
-EXPORT_SYMBOL(secure_tcpv6_sequence_number);
-EXPORT_SYMBOL(secure_ipv6_id);
-#endif
-
 #endif
 
 EXPORT_SYMBOL(netlink_set_err);