kernel: generic: add 3.10-rc1 support

[openwrt/svn-archive/archive.git] / target / linux / generic / patches-3.10 / 643-bridge_remove_ipv6_dependency.patch

diff --git a/target/linux/generic/patches-3.10/643-bridge_remove_ipv6_dependency.patch b/target/linux/generic/patches-3.10/643-bridge_remove_ipv6_dependency.patch
new file mode 100644 (file)
index 0000000..02a76c3
--- /dev/null
+++ b/target/linux/generic/patches-3.10/643-bridge_remove_ipv6_dependency.patch
@@ -0,0 +1,107 @@
+--- a/include/net/addrconf.h
++++ b/include/net/addrconf.h
+@@ -96,6 +96,12 @@ 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,
++                                              const struct net_device *dev,
++                                              const struct in6_addr *daddr,
++                                              unsigned int prefs,
++                                              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
+@@ -1321,7 +1321,7 @@ 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)
+ {
+@@ -1446,7 +1446,6 @@ 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)
+@@ -5133,6 +5132,9 @@ 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);
+@@ -5151,6 +5153,9 @@ 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, const struct net_device *dev,
++                      const struct in6_addr *daddr, unsigned int prefs,
++                      struct in6_addr *saddr);
++
++EXPORT_SYMBOL(ipv6_dev_get_saddr_hook);
++
++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)
++{
++      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);
++