ipv6: fix throw routes

Signed-off-by: Steven Barth <steven@midlink.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44894 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/generic/patches-3.10/668-fix-ipv6-throw-routes.patch

+From 9cd600244515bd4540898411ab781a97f0cc387f Mon Sep 17 00:00:00 2001
+From: Steven Barth <steven@midlink.org>
+Date: Thu, 19 Mar 2015 11:54:50 +0100
+Subject: [PATCH] ipv6: fix backtracking for throw routes
+
+for throw routes to trigger evaluation of other policy rules
+EAGAIN needs to be propagated up to fib_rules_lookup
+similar to how its done for IPv4
+
+A simple testcase for verification is:
+
+ip -6 rule add lookup 33333 priority 33333
+ip -6 route add throw 2001:db8::1
+ip -6 route add 2001:db8::1 via fe80::1 dev wlan0 table 33333
+ip route get 2001:db8::1
+
+Signed-off-by: Steven Barth <cyrus@openwrt.org>
+---
+ net/ipv6/fib6_rules.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
+index b4d5e1d..27ca796 100644
+--- a/net/ipv6/fib6_rules.c
++++ b/net/ipv6/fib6_rules.c
+@@ -104,6 +104,7 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
+ 				goto again;
+ 			flp6->saddr = saddr;
+ 		}
++		err = rt->dst.error;
+ 		goto out;
+ 	}
+ again:
+-- 
+2.1.4
+

target/linux/generic/patches-3.14/668-fix-ipv6-throw-routes.patch

+From 9cd600244515bd4540898411ab781a97f0cc387f Mon Sep 17 00:00:00 2001
+From: Steven Barth <steven@midlink.org>
+Date: Thu, 19 Mar 2015 11:54:50 +0100
+Subject: [PATCH] ipv6: fix backtracking for throw routes
+
+for throw routes to trigger evaluation of other policy rules
+EAGAIN needs to be propagated up to fib_rules_lookup
+similar to how its done for IPv4
+
+A simple testcase for verification is:
+
+ip -6 rule add lookup 33333 priority 33333
+ip -6 route add throw 2001:db8::1
+ip -6 route add 2001:db8::1 via fe80::1 dev wlan0 table 33333
+ip route get 2001:db8::1
+
+Signed-off-by: Steven Barth <cyrus@openwrt.org>
+---
+ net/ipv6/fib6_rules.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
+index b4d5e1d..27ca796 100644
+--- a/net/ipv6/fib6_rules.c
++++ b/net/ipv6/fib6_rules.c
+@@ -104,6 +104,7 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
+ 				goto again;
+ 			flp6->saddr = saddr;
+ 		}
++		err = rt->dst.error;
+ 		goto out;
+ 	}
+ again:
+-- 
+2.1.4
+

target/linux/generic/patches-3.18/668-fix-ipv6-throw-routes.patch

+From 9cd600244515bd4540898411ab781a97f0cc387f Mon Sep 17 00:00:00 2001
+From: Steven Barth <steven@midlink.org>
+Date: Thu, 19 Mar 2015 11:54:50 +0100
+Subject: [PATCH] ipv6: fix backtracking for throw routes
+
+for throw routes to trigger evaluation of other policy rules
+EAGAIN needs to be propagated up to fib_rules_lookup
+similar to how its done for IPv4
+
+A simple testcase for verification is:
+
+ip -6 rule add lookup 33333 priority 33333
+ip -6 route add throw 2001:db8::1
+ip -6 route add 2001:db8::1 via fe80::1 dev wlan0 table 33333
+ip route get 2001:db8::1
+
+Signed-off-by: Steven Barth <cyrus@openwrt.org>
+---
+ net/ipv6/fib6_rules.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
+index b4d5e1d..27ca796 100644
+--- a/net/ipv6/fib6_rules.c
++++ b/net/ipv6/fib6_rules.c
+@@ -104,6 +104,7 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
+ 				goto again;
+ 			flp6->saddr = saddr;
+ 		}
++		err = rt->dst.error;
+ 		goto out;
+ 	}
+ again:
+-- 
+2.1.4
+

target/linux/generic/patches-3.19/668-fix-ipv6-throw-routes.patch

+From 9cd600244515bd4540898411ab781a97f0cc387f Mon Sep 17 00:00:00 2001
+From: Steven Barth <steven@midlink.org>
+Date: Thu, 19 Mar 2015 11:54:50 +0100
+Subject: [PATCH] ipv6: fix backtracking for throw routes
+
+for throw routes to trigger evaluation of other policy rules
+EAGAIN needs to be propagated up to fib_rules_lookup
+similar to how its done for IPv4
+
+A simple testcase for verification is:
+
+ip -6 rule add lookup 33333 priority 33333
+ip -6 route add throw 2001:db8::1
+ip -6 route add 2001:db8::1 via fe80::1 dev wlan0 table 33333
+ip route get 2001:db8::1
+
+Signed-off-by: Steven Barth <cyrus@openwrt.org>
+---
+ net/ipv6/fib6_rules.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
+index b4d5e1d..27ca796 100644
+--- a/net/ipv6/fib6_rules.c
++++ b/net/ipv6/fib6_rules.c
+@@ -104,6 +104,7 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
+ 				goto again;
+ 			flp6->saddr = saddr;
+ 		}
++		err = rt->dst.error;
+ 		goto out;
+ 	}
+ again:
+-- 
+2.1.4
+

target/linux/generic/patches-4.0/668-fix-ipv6-throw-routes.patch

+From 9cd600244515bd4540898411ab781a97f0cc387f Mon Sep 17 00:00:00 2001
+From: Steven Barth <steven@midlink.org>
+Date: Thu, 19 Mar 2015 11:54:50 +0100
+Subject: [PATCH] ipv6: fix backtracking for throw routes
+
+for throw routes to trigger evaluation of other policy rules
+EAGAIN needs to be propagated up to fib_rules_lookup
+similar to how its done for IPv4
+
+A simple testcase for verification is:
+
+ip -6 rule add lookup 33333 priority 33333
+ip -6 route add throw 2001:db8::1
+ip -6 route add 2001:db8::1 via fe80::1 dev wlan0 table 33333
+ip route get 2001:db8::1
+
+Signed-off-by: Steven Barth <cyrus@openwrt.org>
+---
+ net/ipv6/fib6_rules.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
+index b4d5e1d..27ca796 100644
+--- a/net/ipv6/fib6_rules.c
++++ b/net/ipv6/fib6_rules.c
+@@ -104,6 +104,7 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
+ 				goto again;
+ 			flp6->saddr = saddr;
+ 		}
++		err = rt->dst.error;
+ 		goto out;
+ 	}
+ again:
+-- 
+2.1.4
+