kernel: remove support for kernel 4.9

No target uses kernel 4.9 anymore.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 0 insertions, 255 deletions

diff --git a/target/linux/generic/pending-4.9/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch b/target/linux/generic/pending-4.9/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch
deleted file mode 100644
index 3f6b406cf2..0000000000
--- a/target/linux/generic/pending-4.9/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch
+++ /dev/null
@@ -1,255 +0,0 @@
-From: Jonas Gorski <jogo@openwrt.org>
-Subject: ipv6: allow rejecting with "source address failed policy"
-
-RFC6204 L-14 requires rejecting traffic from invalid addresses with
-ICMPv6 Destination Unreachable, Code 5 (Source address failed ingress/
-egress policy) on the LAN side, so add an appropriate rule for that.
-
-Signed-off-by: Jonas Gorski <jogo@openwrt.org>
----
- include/net/netns/ipv6.h       |  1 +
- include/uapi/linux/fib_rules.h |  4 +++
- include/uapi/linux/rtnetlink.h |  1 +
- net/ipv4/fib_semantics.c       |  4 +++
- net/ipv4/fib_trie.c            |  1 +
- net/ipv4/ipmr.c                |  1 +
- net/ipv6/fib6_rules.c          |  4 +++
- net/ipv6/ip6mr.c               |  2 ++
- net/ipv6/route.c               | 58 +++++++++++++++++++++++++++++++++++++++++-
- 9 files changed, 75 insertions(+), 1 deletion(-)
-
---- a/include/net/netns/ipv6.h
-+++ b/include/net/netns/ipv6.h
-@@ -66,6 +66,7 @@ struct netns_ipv6 {
- 	unsigned long		 ip6_rt_last_gc;
- #ifdef CONFIG_IPV6_MULTIPLE_TABLES
- 	struct rt6_info         *ip6_prohibit_entry;
-+	struct rt6_info		*ip6_policy_failed_entry;
- 	struct rt6_info         *ip6_blk_hole_entry;
- 	struct fib6_table       *fib6_local_tbl;
- 	struct fib_rules_ops    *fib6_rules_ops;
---- a/include/uapi/linux/fib_rules.h
-+++ b/include/uapi/linux/fib_rules.h
-@@ -66,6 +66,10 @@ enum {
- 	FR_ACT_BLACKHOLE,	/* Drop without notification */
- 	FR_ACT_UNREACHABLE,	/* Drop with ENETUNREACH */
- 	FR_ACT_PROHIBIT,	/* Drop with EACCES */
-+	FR_ACT_RES9,
-+	FR_ACT_RES10,
-+	FR_ACT_RES11,
-+	FR_ACT_POLICY_FAILED,	/* Drop with EACCES */
- 	__FR_ACT_MAX,
- };
- 
---- a/include/uapi/linux/rtnetlink.h
-+++ b/include/uapi/linux/rtnetlink.h
-@@ -215,6 +215,7 @@ enum {
- 	RTN_THROW,		/* Not in this table		*/
- 	RTN_NAT,		/* Translate this address	*/
- 	RTN_XRESOLVE,		/* Use external resolver	*/
-+	RTN_POLICY_FAILED,	/* Failed ingress/egress policy */
- 	__RTN_MAX
- };
- 
---- a/net/ipv4/fib_semantics.c
-+++ b/net/ipv4/fib_semantics.c
-@@ -138,6 +138,10 @@ const struct fib_prop fib_props[RTN_MAX
- 		.error	= -EINVAL,
- 		.scope	= RT_SCOPE_NOWHERE,
- 	},
-+	[RTN_POLICY_FAILED] = {
-+		.error	= -EACCES,
-+		.scope	= RT_SCOPE_UNIVERSE,
-+	},
- };
- 
- static void rt_fibinfo_free(struct rtable __rcu **rtp)
---- a/net/ipv4/fib_trie.c
-+++ b/net/ipv4/fib_trie.c
-@@ -2406,6 +2406,7 @@ static const char *const rtn_type_names[
- 	[RTN_THROW] = "THROW",
- 	[RTN_NAT] = "NAT",
- 	[RTN_XRESOLVE] = "XRESOLVE",
-+	[RTN_POLICY_FAILED] = "POLICY_FAILED",
- };
- 
- static inline const char *rtn_type(char *buf, size_t len, unsigned int t)
---- a/net/ipv4/ipmr.c
-+++ b/net/ipv4/ipmr.c
-@@ -159,6 +159,7 @@ static int ipmr_rule_action(struct fib_r
- 	case FR_ACT_UNREACHABLE:
- 		return -ENETUNREACH;
- 	case FR_ACT_PROHIBIT:
-+	case FR_ACT_POLICY_FAILED:
- 		return -EACCES;
- 	case FR_ACT_BLACKHOLE:
- 	default:
---- a/net/ipv6/fib6_rules.c
-+++ b/net/ipv6/fib6_rules.c
-@@ -77,6 +77,10 @@ static int fib6_rule_action(struct fib_r
- 		err = -EACCES;
- 		rt = net->ipv6.ip6_prohibit_entry;
- 		goto discard_pkt;
-+	case FR_ACT_POLICY_FAILED:
-+		err = -EACCES;
-+		rt = net->ipv6.ip6_policy_failed_entry;
-+		goto discard_pkt;
- 	}
- 
- 	tb_id = fib_rule_get_table(rule, arg);
---- a/net/ipv6/ip6mr.c
-+++ b/net/ipv6/ip6mr.c
-@@ -169,6 +169,8 @@ static int ip6mr_rule_action(struct fib_
- 		return -ENETUNREACH;
- 	case FR_ACT_PROHIBIT:
- 		return -EACCES;
-+	case FR_ACT_POLICY_FAILED:
-+		return -EACCES;
- 	case FR_ACT_BLACKHOLE:
- 	default:
- 		return -EINVAL;
---- a/net/ipv6/route.c
-+++ b/net/ipv6/route.c
-@@ -91,6 +91,8 @@ static int		ip6_pkt_discard(struct sk_bu
- static int		ip6_pkt_discard_out(struct net *net, struct sock *sk, struct sk_buff *skb);
- static int		ip6_pkt_prohibit(struct sk_buff *skb);
- static int		ip6_pkt_prohibit_out(struct net *net, struct sock *sk, struct sk_buff *skb);
-+static int		ip6_pkt_policy_failed(struct sk_buff *skb);
-+static int		ip6_pkt_policy_failed_out(struct net *net, struct sock *sk, struct sk_buff *skb);
- static void		ip6_link_failure(struct sk_buff *skb);
- static void		ip6_rt_update_pmtu(struct dst_entry *dst, struct sock *sk,
- 					   struct sk_buff *skb, u32 mtu);
-@@ -300,6 +302,21 @@ static const struct rt6_info ip6_prohibi
- 	.rt6i_ref	= ATOMIC_INIT(1),
- };
- 
-+static const struct rt6_info ip6_policy_failed_entry_template = {
-+	.dst = {
-+		.__refcnt	= ATOMIC_INIT(1),
-+		.__use		= 1,
-+		.obsolete	= DST_OBSOLETE_FORCE_CHK,
-+		.error		= -EACCES,
-+		.input		= ip6_pkt_policy_failed,
-+		.output		= ip6_pkt_policy_failed_out,
-+	},
-+	.rt6i_flags	= (RTF_REJECT | RTF_NONEXTHOP),
-+	.rt6i_protocol	= RTPROT_KERNEL,
-+	.rt6i_metric	= ~(u32) 0,
-+	.rt6i_ref	= ATOMIC_INIT(1),
-+};
-+
- static const struct rt6_info ip6_blk_hole_entry_template = {
- 	.dst = {
- 		.__refcnt	= ATOMIC_INIT(1),
-@@ -1970,6 +1987,11 @@ static struct rt6_info *ip6_route_info_c
- 			rt->dst.output = ip6_pkt_prohibit_out;
- 			rt->dst.input = ip6_pkt_prohibit;
- 			break;
-+		case RTN_POLICY_FAILED:
-+			rt->dst.error = -EACCES;
-+			rt->dst.output = ip6_pkt_policy_failed_out;
-+			rt->dst.input = ip6_pkt_policy_failed;
-+			break;
- 		case RTN_THROW:
- 		case RTN_UNREACHABLE:
- 		default:
-@@ -2613,6 +2635,17 @@ static int ip6_pkt_prohibit_out(struct n
- 	return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_OUTNOROUTES);
- }
- 
-+static int ip6_pkt_policy_failed(struct sk_buff *skb)
-+{
-+	return ip6_pkt_drop(skb, ICMPV6_POLICY_FAIL, IPSTATS_MIB_INNOROUTES);
-+}
-+
-+static int ip6_pkt_policy_failed_out(struct net *net, struct sock *sk, struct sk_buff *skb)
-+{
-+	skb->dev = skb_dst(skb)->dev;
-+	return ip6_pkt_drop(skb, ICMPV6_POLICY_FAIL, IPSTATS_MIB_OUTNOROUTES);
-+}
-+
- /*
-  *	Allocate a dst for local (unicast / anycast) address.
-  */
-@@ -2850,7 +2883,8 @@ static int rtm_to_fib6_config(struct sk_
- 	if (rtm->rtm_type == RTN_UNREACHABLE ||
- 	    rtm->rtm_type == RTN_BLACKHOLE ||
- 	    rtm->rtm_type == RTN_PROHIBIT ||
--	    rtm->rtm_type == RTN_THROW)
-+	    rtm->rtm_type == RTN_THROW ||
-+	    rtm->rtm_type == RTN_POLICY_FAILED)
- 		cfg->fc_flags |= RTF_REJECT;
- 
- 	if (rtm->rtm_type == RTN_LOCAL)
-@@ -3222,6 +3256,9 @@ static int rt6_fill_node(struct net *net
- 		case -EACCES:
- 			rtm->rtm_type = RTN_PROHIBIT;
- 			break;
-+		case -EPERM:
-+			rtm->rtm_type = RTN_POLICY_FAILED;
-+			break;
- 		case -EAGAIN:
- 			rtm->rtm_type = RTN_THROW;
- 			break;
-@@ -3498,6 +3535,8 @@ static int ip6_route_dev_notify(struct n
- #ifdef CONFIG_IPV6_MULTIPLE_TABLES
- 		net->ipv6.ip6_prohibit_entry->dst.dev = dev;
- 		net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev);
-+		net->ipv6.ip6_policy_failed_entry->dst.dev = dev;
-+		net->ipv6.ip6_policy_failed_entry->rt6i_idev = in6_dev_get(dev);
- 		net->ipv6.ip6_blk_hole_entry->dst.dev = dev;
- 		net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev);
- #endif
-@@ -3509,6 +3548,7 @@ static int ip6_route_dev_notify(struct n
- 		in6_dev_put(net->ipv6.ip6_null_entry->rt6i_idev);
- #ifdef CONFIG_IPV6_MULTIPLE_TABLES
- 		in6_dev_put(net->ipv6.ip6_prohibit_entry->rt6i_idev);
-+		in6_dev_put(net->ipv6.ip6_policy_failed_entry->rt6i_idev);
- 		in6_dev_put(net->ipv6.ip6_blk_hole_entry->rt6i_idev);
- #endif
- 	}
-@@ -3724,6 +3764,17 @@ static int __net_init ip6_route_net_init
- 	net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops;
- 	dst_init_metrics(&net->ipv6.ip6_blk_hole_entry->dst,
- 			 ip6_template_metrics, true);
-+
-+	net->ipv6.ip6_policy_failed_entry =
-+		kmemdup(&ip6_policy_failed_entry_template,
-+			sizeof(*net->ipv6.ip6_policy_failed_entry), GFP_KERNEL);
-+	if (!net->ipv6.ip6_policy_failed_entry)
-+		goto out_ip6_blk_hole_entry;
-+	net->ipv6.ip6_policy_failed_entry->dst.path =
-+		(struct dst_entry *)net->ipv6.ip6_policy_failed_entry;
-+	net->ipv6.ip6_policy_failed_entry->dst.ops = &net->ipv6.ip6_dst_ops;
-+	dst_init_metrics(&net->ipv6.ip6_policy_failed_entry->dst,
-+			 ip6_template_metrics, true);
- #endif
- 
- 	net->ipv6.sysctl.flush_delay = 0;
-@@ -3742,6 +3793,8 @@ out:
- 	return ret;
- 
- #ifdef CONFIG_IPV6_MULTIPLE_TABLES
-+out_ip6_blk_hole_entry:
-+	kfree(net->ipv6.ip6_blk_hole_entry);
- out_ip6_prohibit_entry:
- 	kfree(net->ipv6.ip6_prohibit_entry);
- out_ip6_null_entry:
-@@ -3759,6 +3812,7 @@ static void __net_exit ip6_route_net_exi
- #ifdef CONFIG_IPV6_MULTIPLE_TABLES
- 	kfree(net->ipv6.ip6_prohibit_entry);
- 	kfree(net->ipv6.ip6_blk_hole_entry);
-+	kfree(net->ipv6.ip6_policy_failed_entry);
- #endif
- 	dst_entries_destroy(&net->ipv6.ip6_dst_ops);
- }
-@@ -3832,6 +3886,9 @@ void __init ip6_route_init_special_entri
- 	init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
- 	init_net.ipv6.ip6_blk_hole_entry->dst.dev = init_net.loopback_dev;
- 	init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
-+	init_net.ipv6.ip6_policy_failed_entry->dst.dev = init_net.loopback_dev;
-+	init_net.ipv6.ip6_policy_failed_entry->rt6i_idev =
-+		in6_dev_get(init_net.loopback_dev);
-   #endif
- }
-