mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 14:37:57 +00:00
264 lines
8.5 KiB
Diff
264 lines
8.5 KiB
Diff
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
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index 005e2c2..a6a1df4 100644
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--- a/include/net/netns/ipv6.h
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+++ b/include/net/netns/ipv6.h
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@@ -55,6 +55,7 @@ struct netns_ipv6 {
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unsigned long ip6_rt_last_gc;
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#ifdef CONFIG_IPV6_MULTIPLE_TABLES
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struct rt6_info *ip6_prohibit_entry;
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+ struct rt6_info *ip6_failed_policy_entry;
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struct rt6_info *ip6_blk_hole_entry;
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struct fib6_table *fib6_local_tbl;
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struct fib_rules_ops *fib6_rules_ops;
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diff --git a/include/uapi/linux/fib_rules.h b/include/uapi/linux/fib_rules.h
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index 51da65b..1429852 100644
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--- a/include/uapi/linux/fib_rules.h
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+++ b/include/uapi/linux/fib_rules.h
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@@ -64,6 +64,10 @@ enum {
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FR_ACT_BLACKHOLE, /* Drop without notification */
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FR_ACT_UNREACHABLE, /* Drop with ENETUNREACH */
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FR_ACT_PROHIBIT, /* Drop with EACCES */
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+ FR_ACT_RES9,
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+ FR_ACT_RES10,
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+ FR_ACT_RES11,
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+ FR_ACT_FAILED_POLICY, /* Drop with EPERM */
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__FR_ACT_MAX,
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};
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diff --git a/include/uapi/linux/icmpv6.h b/include/uapi/linux/icmpv6.h
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index e0133c7..dabfa1a 100644
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--- a/include/uapi/linux/icmpv6.h
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+++ b/include/uapi/linux/icmpv6.h
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@@ -115,6 +115,7 @@ struct icmp6hdr {
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#define ICMPV6_NOT_NEIGHBOUR 2
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#define ICMPV6_ADDR_UNREACH 3
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#define ICMPV6_PORT_UNREACH 4
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+#define ICMPV6_FAILED_POLICY 5
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/*
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* Codes for Time Exceeded
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diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
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index 7a2144e..8f643f1 100644
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--- a/include/uapi/linux/rtnetlink.h
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+++ b/include/uapi/linux/rtnetlink.h
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@@ -203,6 +203,7 @@ enum {
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RTN_THROW, /* Not in this table */
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RTN_NAT, /* Translate this address */
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RTN_XRESOLVE, /* Use external resolver */
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+ RTN_FAILED_POLICY, /* Failed ingress/egress policy */
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__RTN_MAX
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};
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diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
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index 26aa65d..2f66341 100644
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--- a/net/ipv4/fib_rules.c
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+++ b/net/ipv4/fib_rules.c
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@@ -84,6 +84,10 @@ static int fib4_rule_action(struct fib_rule *rule, struct flowi *flp,
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err = -EACCES;
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goto errout;
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+ case FR_ACT_FAILED_POLICY:
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+ err = -EPERM;
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+ goto errout;
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+
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case FR_ACT_BLACKHOLE:
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default:
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err = -EINVAL;
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diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
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index 8f6cb7a..dbae75d 100644
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--- a/net/ipv4/fib_semantics.c
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+++ b/net/ipv4/fib_semantics.c
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@@ -138,6 +138,10 @@ const struct fib_prop fib_props[RTN_MAX + 1] = {
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.error = -EINVAL,
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.scope = RT_SCOPE_NOWHERE,
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},
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+ [RTN_FAILED_POLICY] = {
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+ .error = -EPERM,
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+ .scope = RT_SCOPE_UNIVERSE,
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+ },
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};
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static void rt_fibinfo_free(struct rtable __rcu **rtp)
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diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
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index 49616fe..e2845bd 100644
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--- a/net/ipv4/fib_trie.c
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+++ b/net/ipv4/fib_trie.c
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@@ -2343,6 +2343,7 @@ static const char *const rtn_type_names[__RTN_MAX] = {
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[RTN_THROW] = "THROW",
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[RTN_NAT] = "NAT",
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[RTN_XRESOLVE] = "XRESOLVE",
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+ [RTN_FAILED_POLICY] = "FAILED_POLICY",
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};
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static inline const char *rtn_type(char *buf, size_t len, unsigned int t)
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diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
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index df97f0a..2bd33cc 100644
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--- a/net/ipv4/ipmr.c
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+++ b/net/ipv4/ipmr.c
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@@ -181,6 +181,7 @@ static int ipmr_rule_action(struct fib_rule *rule, struct flowi *flp,
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case FR_ACT_UNREACHABLE:
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return -ENETUNREACH;
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case FR_ACT_PROHIBIT:
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+ case FR_ACT_FAILED_POLICY:
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return -EACCES;
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case FR_ACT_BLACKHOLE:
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default:
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diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
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index 2e1a432..c4413b2 100644
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--- a/net/ipv6/fib6_rules.c
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+++ b/net/ipv6/fib6_rules.c
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@@ -69,6 +69,9 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
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case FR_ACT_PROHIBIT:
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rt = net->ipv6.ip6_prohibit_entry;
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goto discard_pkt;
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+ case FR_ACT_FAILED_POLICY:
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+ rt = net->ipv6.ip6_failed_policy_entry;
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+ goto discard_pkt;
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}
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table = fib6_get_table(net, rule->table);
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diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
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index 583e8d4..1e524da 100644
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--- a/net/ipv6/ip6mr.c
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+++ b/net/ipv6/ip6mr.c
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@@ -166,6 +166,8 @@ static int ip6mr_rule_action(struct fib_rule *rule, struct flowi *flp,
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return -ENETUNREACH;
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case FR_ACT_PROHIBIT:
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return -EACCES;
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+ case FR_ACT_FAILED_POLICY:
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+ return -EPERM;
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case FR_ACT_BLACKHOLE:
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default:
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return -EINVAL;
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diff --git a/net/ipv6/route.c b/net/ipv6/route.c
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index 2b87418..864f5fe 100644
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--- a/net/ipv6/route.c
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+++ b/net/ipv6/route.c
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@@ -245,6 +245,24 @@ static const struct rt6_info ip6_prohibit_entry_template = {
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.rt6i_ref = ATOMIC_INIT(1),
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};
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+static int ip6_pkt_failed_policy(struct sk_buff *skb);
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+static int ip6_pkt_failed_policy_out(struct sk_buff *skb);
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+
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+static const struct rt6_info ip6_failed_policy_entry_template = {
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+ .dst = {
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+ .__refcnt = ATOMIC_INIT(1),
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+ .__use = 1,
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+ .obsolete = DST_OBSOLETE_FORCE_CHK,
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+ .error = -EPERM,
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+ .input = ip6_pkt_failed_policy,
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+ .output = ip6_pkt_failed_policy_out,
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+ },
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+ .rt6i_flags = (RTF_REJECT | RTF_NONEXTHOP),
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+ .rt6i_protocol = RTPROT_KERNEL,
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+ .rt6i_metric = ~(u32) 0,
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+ .rt6i_ref = ATOMIC_INIT(1),
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+};
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+
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static const struct rt6_info ip6_blk_hole_entry_template = {
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.dst = {
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.__refcnt = ATOMIC_INIT(1),
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@@ -1459,6 +1477,9 @@ int ip6_route_add(struct fib6_config *cfg)
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case RTN_THROW:
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rt->dst.error = -EAGAIN;
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break;
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+ case RTN_FAILED_POLICY:
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+ rt->dst.error = -EPERM;
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+ break;
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default:
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rt->dst.error = -ENETUNREACH;
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break;
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@@ -2035,6 +2056,17 @@ static int ip6_pkt_prohibit_out(struct sk_buff *skb)
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return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_OUTNOROUTES);
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}
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+static int ip6_pkt_failed_policy(struct sk_buff *skb)
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+{
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+ return ip6_pkt_drop(skb, ICMPV6_FAILED_POLICY, IPSTATS_MIB_INNOROUTES);
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+}
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+
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+static int ip6_pkt_failed_policy_out(struct sk_buff *skb)
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+{
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+ skb->dev = skb_dst(skb)->dev;
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+ return ip6_pkt_drop(skb, ICMPV6_FAILED_POLICY, IPSTATS_MIB_OUTNOROUTES);
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+}
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+
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#endif
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/*
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@@ -2240,7 +2272,8 @@ static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,
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if (rtm->rtm_type == RTN_UNREACHABLE ||
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rtm->rtm_type == RTN_BLACKHOLE ||
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rtm->rtm_type == RTN_PROHIBIT ||
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- rtm->rtm_type == RTN_THROW)
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+ rtm->rtm_type == RTN_THROW ||
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+ rtm->rtm_type == RTN_FAILED_POLICY)
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cfg->fc_flags |= RTF_REJECT;
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if (rtm->rtm_type == RTN_LOCAL)
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@@ -2442,6 +2475,9 @@ static int rt6_fill_node(struct net *net,
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case -EACCES:
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rtm->rtm_type = RTN_PROHIBIT;
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break;
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+ case -EPERM:
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+ rtm->rtm_type = RTN_FAILED_POLICY;
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+ break;
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case -EAGAIN:
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rtm->rtm_type = RTN_THROW;
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break;
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@@ -2692,6 +2728,8 @@ static int ip6_route_dev_notify(struct notifier_block *this,
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#ifdef CONFIG_IPV6_MULTIPLE_TABLES
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net->ipv6.ip6_prohibit_entry->dst.dev = dev;
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net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev);
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+ net->ipv6.ip6_failed_policy_entry->dst.dev = dev;
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+ net->ipv6.ip6_failed_policy_entry->rt6i_idev = in6_dev_get(dev);
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net->ipv6.ip6_blk_hole_entry->dst.dev = dev;
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net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev);
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#endif
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@@ -2952,6 +2990,17 @@ static int __net_init ip6_route_net_init(struct net *net)
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net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops;
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dst_init_metrics(&net->ipv6.ip6_blk_hole_entry->dst,
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ip6_template_metrics, true);
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+
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+ net->ipv6.ip6_failed_policy_entry =
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+ kmemdup(&ip6_failed_policy_entry_template,
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+ sizeof(*net->ipv6.ip6_failed_policy_entry), GFP_KERNEL);
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+ if (!net->ipv6.ip6_failed_policy_entry)
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+ goto out_ip6_blk_hole_entry;
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+ net->ipv6.ip6_failed_policy_entry->dst.path =
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+ (struct dst_entry *)net->ipv6.ip6_failed_policy_entry;
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+ net->ipv6.ip6_failed_policy_entry->dst.ops = &net->ipv6.ip6_dst_ops;
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+ dst_init_metrics(&net->ipv6.ip6_failed_policy_entry->dst,
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+ ip6_template_metrics, true);
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#endif
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net->ipv6.sysctl.flush_delay = 0;
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@@ -2970,6 +3019,8 @@ out:
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return ret;
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#ifdef CONFIG_IPV6_MULTIPLE_TABLES
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+out_ip6_blk_hole_entry:
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+ kfree(net->ipv6.ip6_blk_hole_entry);
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out_ip6_prohibit_entry:
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kfree(net->ipv6.ip6_prohibit_entry);
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out_ip6_null_entry:
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@@ -2987,6 +3038,7 @@ static void __net_exit ip6_route_net_exit(struct net *net)
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#ifdef CONFIG_IPV6_MULTIPLE_TABLES
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kfree(net->ipv6.ip6_prohibit_entry);
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kfree(net->ipv6.ip6_blk_hole_entry);
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+ kfree(net->ipv6.ip6_failed_policy_entry);
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#endif
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dst_entries_destroy(&net->ipv6.ip6_dst_ops);
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}
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@@ -3083,6 +3135,9 @@ int __init ip6_route_init(void)
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init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
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init_net.ipv6.ip6_blk_hole_entry->dst.dev = init_net.loopback_dev;
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init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
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+ init_net.ipv6.ip6_failed_policy_entry->dst.dev = init_net.loopback_dev;
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+ init_net.ipv6.ip6_failed_policy_entry->rt6i_idev =
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+ in6_dev_get(init_net.loopback_dev);
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#endif
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ret = fib6_init();
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if (ret)
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