kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

1 files changed, 0 insertions, 263 deletions

diff --git a/target/linux/generic/pending-5.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch b/target/linux/generic/pending-5.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch
deleted file mode 100644
index 82c1e26831..0000000000
--- a/target/linux/generic/pending-5.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch
+++ /dev/null
@@ -1,263 +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
-@@ -84,6 +84,7 @@ struct netns_ipv6 {
- 	unsigned int		fib6_rules_require_fldissect;
- 	bool			fib6_has_custom_rules;
- 	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
-@@ -82,6 +82,10 @@ 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
-@@ -235,6 +235,7 @@ 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
-@@ -142,6 +142,10 @@ 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
-@@ -2596,6 +2596,7 @@ 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
-@@ -173,6 +173,7 @@ 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
-@@ -216,6 +216,10 @@ static int __fib6_rule_action(struct fib
- 		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
-@@ -161,6 +161,8 @@ 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
-@@ -94,6 +94,8 @@ 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,
-@@ -327,6 +329,18 @@ static const struct rt6_info ip6_prohibi
- 	.rt6i_flags	= (RTF_REJECT | RTF_NONEXTHOP),
- };
- 
-+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),
-+};
-+
- static const struct rt6_info ip6_blk_hole_entry_template = {
- 	.dst = {
- 		.__refcnt	= ATOMIC_INIT(1),
-@@ -1048,6 +1062,7 @@ static const int fib6_prop[RTN_MAX + 1]
- 	[RTN_BLACKHOLE]	= -EINVAL,
- 	[RTN_UNREACHABLE] = -EHOSTUNREACH,
- 	[RTN_PROHIBIT]	= -EACCES,
-+	[RTN_POLICY_FAILED] = -EACCES,
- 	[RTN_THROW]	= -EAGAIN,
- 	[RTN_NAT]	= -EINVAL,
- 	[RTN_XRESOLVE]	= -EINVAL,
-@@ -1085,6 +1100,10 @@ static void ip6_rt_init_dst_reject(struc
- 		rt->dst.output = ip6_pkt_prohibit_out;
- 		rt->dst.input = ip6_pkt_prohibit;
- 		break;
-+	case RTN_POLICY_FAILED:
-+		rt->dst.output = ip6_pkt_policy_failed_out;
-+		rt->dst.input = ip6_pkt_policy_failed;
-+		break;
- 	case RTN_THROW:
- 	case RTN_UNREACHABLE:
- 	default:
-@@ -4453,6 +4472,17 @@ 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.
-  */
-@@ -4933,7 +4963,8 @@ 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)
-@@ -6084,6 +6115,8 @@ 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
-@@ -6095,6 +6128,7 @@ static int ip6_route_dev_notify(struct n
- 		in6_dev_put_clear(&net->ipv6.ip6_null_entry->rt6i_idev);
- #ifdef CONFIG_IPV6_MULTIPLE_TABLES
- 		in6_dev_put_clear(&net->ipv6.ip6_prohibit_entry->rt6i_idev);
-+		in6_dev_put_clear(&net->ipv6.ip6_policy_failed_entry->rt6i_idev);
- 		in6_dev_put_clear(&net->ipv6.ip6_blk_hole_entry->rt6i_idev);
- #endif
- 	}
-@@ -6287,6 +6321,8 @@ static int __net_init ip6_route_net_init
- 
- #ifdef CONFIG_IPV6_MULTIPLE_TABLES
- 	net->ipv6.fib6_has_custom_rules = false;
-+
-+
- 	net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
- 					       sizeof(*net->ipv6.ip6_prohibit_entry),
- 					       GFP_KERNEL);
-@@ -6297,11 +6333,21 @@ static int __net_init ip6_route_net_init
- 			 ip6_template_metrics, true);
- 	INIT_LIST_HEAD(&net->ipv6.ip6_prohibit_entry->rt6i_uncached);
- 
-+	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_prohibit_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);
-+	INIT_LIST_HEAD(&net->ipv6.ip6_policy_failed_entry->rt6i_uncached);
-+
- 	net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
- 					       sizeof(*net->ipv6.ip6_blk_hole_entry),
- 					       GFP_KERNEL);
- 	if (!net->ipv6.ip6_blk_hole_entry)
--		goto out_ip6_prohibit_entry;
-+		goto out_ip6_policy_failed_entry;
- 	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);
-@@ -6325,6 +6371,8 @@ out:
- 	return ret;
- 
- #ifdef CONFIG_IPV6_MULTIPLE_TABLES
-+out_ip6_policy_failed_entry:
-+	kfree(net->ipv6.ip6_policy_failed_entry);
- out_ip6_prohibit_entry:
- 	kfree(net->ipv6.ip6_prohibit_entry);
- out_ip6_null_entry:
-@@ -6344,6 +6392,7 @@ static void __net_exit ip6_route_net_exi
- 	kfree(net->ipv6.ip6_null_entry);
- #ifdef CONFIG_IPV6_MULTIPLE_TABLES
- 	kfree(net->ipv6.ip6_prohibit_entry);
-+	kfree(net->ipv6.ip6_policy_failed_entry);
- 	kfree(net->ipv6.ip6_blk_hole_entry);
- #endif
- 	dst_entries_destroy(&net->ipv6.ip6_dst_ops);
-@@ -6421,6 +6470,9 @@ 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
- }
-