[UDP]: Allow users to configure UDP-Lite.
Let's give users an option for disabling UDP-Lite (~4K).
old:
| text data bss dec hex filename
| 286498 12432 6072 305002 4a76a net/ipv4/built-in.o
| 193830 8192 3204 205226 321aa net/ipv6/ipv6.o
new (without UDP-Lite):
| text data bss dec hex filename
| 284086 12136 5432 301654 49a56 net/ipv4/built-in.o
| 191835 7832 3076 202743 317f7 net/ipv6/ipv6.o
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 9869f87..243c42a 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -691,12 +691,16 @@
goto err_icmpmsg_mib;
if (snmp_mib_init((void **)udp_stats_in6, sizeof (struct udp_mib)) < 0)
goto err_udp_mib;
+#ifdef CONFIG_IP_UDPLITE
if (snmp_mib_init((void **)udplite_stats_in6,
sizeof (struct udp_mib)) < 0)
goto err_udplite_mib;
+#endif
return 0;
+#ifdef CONFIG_IP_UDPLITE
err_udplite_mib:
+#endif
snmp_mib_free((void **)udp_stats_in6);
err_udp_mib:
snmp_mib_free((void **)icmpv6msg_statistics);
@@ -715,7 +719,9 @@
snmp_mib_free((void **)icmpv6_statistics);
snmp_mib_free((void **)icmpv6msg_statistics);
snmp_mib_free((void **)udp_stats_in6);
+#ifdef CONFIG_IP_UDPLITE
snmp_mib_free((void **)udplite_stats_in6);
+#endif
}
static int inet6_net_init(struct net *net)
@@ -760,9 +766,11 @@
if (err)
goto out_unregister_tcp_proto;
+#ifdef CONFIG_IP_UDPLITE
err = proto_register(&udplitev6_prot, 1);
if (err)
goto out_unregister_udp_proto;
+#endif
err = proto_register(&rawv6_prot, 1);
if (err)
@@ -933,8 +941,10 @@
out_unregister_raw_proto:
proto_unregister(&rawv6_prot);
out_unregister_udplite_proto:
+#ifdef CONFIG_IP_UDPLITE
proto_unregister(&udplitev6_prot);
out_unregister_udp_proto:
+#endif
proto_unregister(&udpv6_prot);
out_unregister_tcp_proto:
proto_unregister(&tcpv6_prot);
@@ -950,7 +960,9 @@
rtnl_unregister_all(PF_INET6);
udpv6_exit();
+#ifdef CONFIG_IP_UDPLITE
udplitev6_exit();
+#endif
tcpv6_exit();
/* Cleanup code parts. */
@@ -982,7 +994,9 @@
unregister_pernet_subsys(&inet6_net_ops);
cleanup_ipv6_mibs();
proto_unregister(&rawv6_prot);
+#ifdef CONFIG_IP_UDPLITE
proto_unregister(&udplitev6_prot);
+#endif
proto_unregister(&udpv6_prot);
proto_unregister(&tcpv6_prot);
}