diff options
Diffstat (limited to 'target/linux/generic/patches-4.4')
| -rw-r--r-- | target/linux/generic/patches-4.4/643-bridge_remove_ipv6_dependency.patch | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/target/linux/generic/patches-4.4/643-bridge_remove_ipv6_dependency.patch b/target/linux/generic/patches-4.4/643-bridge_remove_ipv6_dependency.patch deleted file mode 100644 index 92244e41ab..0000000000 --- a/target/linux/generic/patches-4.4/643-bridge_remove_ipv6_dependency.patch +++ /dev/null @@ -1,123 +0,0 @@ -From: Jonas Gorski <jonas.gorski+openwrt@gmail.com> -Subject: [PATCH] bridge: remove IPv6 depependency of bridge in 2.6.38+ - -Since 2.6.38 the bridge module has a dependency to IPv6 if IPv6 is -enabled. Since the IPv6 module isn't exactly lightweight and bridge also -only needs a single function from IPv6, it's rather easy to create a -common "lib" module with a RCU pointer to the actual implementation, if -the IPv6 module is loaded (although slightly hackish). - -The codepath seems to be only taken when using IPv6, so there should be -no negative side effects when IPv6 isn't loaded. I did not measure how -big the performance impact is. ---- ---- a/include/net/addrconf.h -+++ b/include/net/addrconf.h -@@ -122,6 +122,12 @@ static inline int addrconf_ifid_eui48(u8 - return 0; - } - -+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 -@@ -46,6 +46,7 @@ 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,$(CONFIG_IPV6)) += inet6_stubs.o - - ifneq ($(CONFIG_IPV6),) - obj-$(CONFIG_NET_UDP_TUNNEL) += ip6_udp_tunnel.o ---- a/net/ipv6/addrconf.c -+++ b/net/ipv6/addrconf.c -@@ -1511,7 +1511,7 @@ out: - return hiscore_idx; - } - --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) - { -@@ -1581,7 +1581,6 @@ int ipv6_dev_get_saddr(struct net *net, - in6_ifa_put(hiscore->ifa); - return 0; - } --EXPORT_SYMBOL(ipv6_dev_get_saddr); - - int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr, - u32 banned_flags) -@@ -5962,6 +5961,9 @@ 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); -@@ -5981,6 +5983,9 @@ 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); -+ |