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authorJohn Crispin <john@phrozen.org>2016-12-25 20:11:34 +0100
committerJohn Crispin <john@phrozen.org>2017-08-05 08:46:36 +0200
commit74d00a8c3849c1340efd713eb94b786e304c201f (patch)
treede481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/pending-4.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch
parentde350550ef648d9728351b986b0516fa29465c45 (diff)
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kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches * merge debloat patches * merge Kconfig patches * merge swconfig patches * merge hotplug patches * drop 200-fix_localversion.patch - upstream * drop 222-arm_zimage_none.patch - unused * drop 252-mv_cesa_depends.patch - no longer required * drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused * drop 661-fq_codel_keep_dropped_stats.patch - outdated * drop 702-phy_add_aneg_done_function.patch - upstream * drop 840-rtc7301.patch - unused * drop 841-rtc_pt7c4338.patch - upstream * drop 921-use_preinit_as_init.patch - unused * drop spio-gpio-old and gpio-mmc - unused Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/pending-4.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch')
-rw-r--r--target/linux/generic/pending-4.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch249
1 files changed, 249 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch b/target/linux/generic/pending-4.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch
new file mode 100644
index 0000000000..c6c65d9f39
--- /dev/null
+++ b/target/linux/generic/pending-4.4/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch
@@ -0,0 +1,249 @@
+From 1b5aaa4b16f6e6471ab1c07b38068197a1b4c395 Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jogo@openwrt.org>
+Date: Fri, 24 May 2013 14:40:54 +0200
+Subject: [PATCH 1/2] 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
+@@ -63,6 +63,7 @@ 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
+@@ -64,6 +64,10 @@ 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
+@@ -210,6 +210,7 @@ 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
+@@ -2370,6 +2370,7 @@ 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
+@@ -182,6 +182,7 @@ 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
+@@ -73,6 +73,10 @@ 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;
+ }
+
+ table = fib6_get_table(net, rule->table);
+--- a/net/ipv6/ip6mr.c
++++ b/net/ipv6/ip6mr.c
+@@ -167,6 +167,8 @@ 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
+@@ -90,6 +90,8 @@ 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);
+@@ -297,6 +299,21 @@ 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),
+@@ -1889,6 +1906,11 @@ 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:
+@@ -2492,6 +2514,17 @@ 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.
+ */
+@@ -2734,7 +2767,8 @@ 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)
+@@ -3087,6 +3121,9 @@ 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;
+@@ -3366,6 +3403,8 @@ 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
+@@ -3588,6 +3627,17 @@ 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;
+@@ -3606,6 +3656,8 @@ 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:
+@@ -3623,6 +3675,7 @@ 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);
+ }
+@@ -3696,6 +3749,9 @@ 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
+ }
+