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-rw-r--r--target/linux/generic/patches-3.8/643-bridge_remove_ipv6_dependency.patch107
1 files changed, 107 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.8/643-bridge_remove_ipv6_dependency.patch b/target/linux/generic/patches-3.8/643-bridge_remove_ipv6_dependency.patch
new file mode 100644
index 0000000000..a1563f44e7
--- /dev/null
+++ b/target/linux/generic/patches-3.8/643-bridge_remove_ipv6_dependency.patch
@@ -0,0 +1,107 @@
+--- a/include/net/addrconf.h
++++ b/include/net/addrconf.h
+@@ -92,6 +92,12 @@ extern void addrconf_join_solict(struc
+ extern void addrconf_leave_solict(struct inet6_dev *idev,
+ const struct in6_addr *addr);
+
++extern int (*ipv6_dev_get_saddr_hook)(struct net *net,
++ struct net_device *dev,
++ const struct in6_addr *daddr,
++ unsigned int srcprefs,
++ struct in6_addr *saddr);
++
+ static inline unsigned long addrconf_timeout_fixup(u32 timeout,
+ unsigned int unit)
+ {
+--- a/net/bridge/Kconfig
++++ b/net/bridge/Kconfig
+@@ -6,7 +6,6 @@ config BRIDGE
+ tristate "802.1d Ethernet Bridging"
+ select LLC
+ select STP
+- depends on IPV6 || IPV6=n
+ ---help---
+ If you say Y here, then your Linux box will be able to act as an
+ Ethernet bridge, which means that the different Ethernet segments it
+--- a/net/ipv6/Makefile
++++ b/net/ipv6/Makefile
+@@ -44,3 +44,4 @@ obj-y += addrconf_core.o exthdrs_core.o
+ obj-$(CONFIG_INET) += output_core.o protocol.o $(ipv6-offload)
+
+ obj-$(subst m,y,$(CONFIG_IPV6)) += inet6_hashtables.o
++obj-$(subst m,y,$(CONFIG_IPV6)) += inet6_stubs.o
+--- a/net/ipv6/addrconf.c
++++ b/net/ipv6/addrconf.c
+@@ -1246,7 +1246,7 @@ out:
+ return ret;
+ }
+
+-int ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev,
++static int __ipv6_dev_get_saddr(struct net *net, const struct net_device *dst_dev,
+ const struct in6_addr *daddr, unsigned int prefs,
+ struct in6_addr *saddr)
+ {
+@@ -1371,7 +1371,6 @@ try_nextdev:
+ in6_ifa_put(hiscore->ifa);
+ return 0;
+ }
+-EXPORT_SYMBOL(ipv6_dev_get_saddr);
+
+ int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
+ unsigned char banned_flags)
+@@ -4949,6 +4948,9 @@ int __init addrconf_init(void)
+
+ ipv6_addr_label_rtnl_register();
+
++ BUG_ON(ipv6_dev_get_saddr_hook != NULL);
++ rcu_assign_pointer(ipv6_dev_get_saddr_hook, __ipv6_dev_get_saddr);
++
+ return 0;
+ errout:
+ rtnl_af_unregister(&inet6_ops);
+@@ -4967,6 +4969,9 @@ void addrconf_cleanup(void)
+ struct net_device *dev;
+ int i;
+
++ rcu_assign_pointer(ipv6_dev_get_saddr_hook, NULL);
++ synchronize_rcu();
++
+ unregister_netdevice_notifier(&ipv6_dev_notf);
+ unregister_pernet_subsys(&addrconf_ops);
+ ipv6_addr_label_cleanup();
+--- /dev/null
++++ b/net/ipv6/inet6_stubs.c
+@@ -0,0 +1,33 @@
++/*
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++#include <linux/export.h>
++#include <net/ipv6.h>
++
++int (*ipv6_dev_get_saddr_hook)(struct net *net, struct net_device *dev,
++ const struct in6_addr *daddr, unsigned int srcprefs,
++ struct in6_addr *saddr);
++
++EXPORT_SYMBOL(ipv6_dev_get_saddr_hook);
++
++int ipv6_dev_get_saddr(struct net *net, struct net_device *dst_dev,
++ const struct in6_addr *daddr, unsigned int prefs,
++ struct in6_addr *saddr)
++{
++ int ret = -EADDRNOTAVAIL;
++ typeof(ipv6_dev_get_saddr_hook) dev_get_saddr;
++
++ rcu_read_lock();
++ dev_get_saddr = rcu_dereference(ipv6_dev_get_saddr_hook);
++
++ if (dev_get_saddr)
++ ret = dev_get_saddr(net, dst_dev, daddr, prefs, saddr);
++
++ rcu_read_unlock();
++ return ret;
++}
++EXPORT_SYMBOL(ipv6_dev_get_saddr);
++