4 files changed, 54 insertions, 8 deletions

diff --git a/net/core/dst.c b/net/core/dst.c
index 95f533844f17..9552a90d4772 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -109,9 +109,6 @@ static void dst_destroy(struct dst_entry *dst)
 		child = xdst->child;
 	}
 #endif
-	if (!(dst->flags & DST_NOCOUNT))
-		dst_entries_add(dst->ops, -1);
-
 	if (dst->ops->destroy)
 		dst->ops->destroy(dst);
 	netdev_put(dst->dev, &dst->dev_tracker);
@@ -159,17 +156,27 @@ void dst_dev_put(struct dst_entry *dst)
 }
 EXPORT_SYMBOL(dst_dev_put);
 
+static void dst_count_dec(struct dst_entry *dst)
+{
+	if (!(dst->flags & DST_NOCOUNT))
+		dst_entries_add(dst->ops, -1);
+}
+
 void dst_release(struct dst_entry *dst)
 {
-	if (dst && rcuref_put(&dst->__rcuref))
+	if (dst && rcuref_put(&dst->__rcuref)) {
+		dst_count_dec(dst);
 		call_rcu_hurry(&dst->rcu_head, dst_destroy_rcu);
+	}
 }
 EXPORT_SYMBOL(dst_release);
 
 void dst_release_immediate(struct dst_entry *dst)
 {
-	if (dst && rcuref_put(&dst->__rcuref))
+	if (dst && rcuref_put(&dst->__rcuref)) {
+		dst_count_dec(dst);
 		dst_destroy(dst);
+	}
 }
 EXPORT_SYMBOL(dst_release_immediate);
 
diff --git a/net/core/filter.c b/net/core/filter.c
index bd0d08bf76bb..cb272b35d484 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2438,9 +2438,9 @@ out:
 
 /* Internal, non-exposed redirect flags. */
 enum {
-	BPF_F_NEIGH	= (1ULL << 1),
-	BPF_F_PEER	= (1ULL << 2),
-	BPF_F_NEXTHOP	= (1ULL << 3),
+	BPF_F_NEIGH	= (1ULL << 16),
+	BPF_F_PEER	= (1ULL << 17),
+	BPF_F_NEXTHOP	= (1ULL << 18),
 #define BPF_F_REDIRECT_INTERNAL	(BPF_F_NEIGH | BPF_F_PEER | BPF_F_NEXTHOP)
 };
 
@@ -2450,6 +2450,8 @@ BPF_CALL_3(bpf_clone_redirect, struct sk_buff *, skb, u32, ifindex, u64, flags)
 	struct sk_buff *clone;
 	int ret;
 
+	BUILD_BUG_ON(BPF_F_REDIRECT_INTERNAL & BPF_F_REDIRECT_FLAGS);
+
 	if (unlikely(flags & (~(BPF_F_INGRESS) | BPF_F_REDIRECT_INTERNAL)))
 		return -EINVAL;
 
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index f0a520987085..e30e7ea0207d 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -384,6 +384,35 @@ void rtnl_unregister_all(int protocol)
 }
 EXPORT_SYMBOL_GPL(rtnl_unregister_all);
 
+int __rtnl_register_many(const struct rtnl_msg_handler *handlers, int n)
+{
+	const struct rtnl_msg_handler *handler;
+	int i, err;
+
+	for (i = 0, handler = handlers; i < n; i++, handler++) {
+		err = rtnl_register_internal(handler->owner, handler->protocol,
+					     handler->msgtype, handler->doit,
+					     handler->dumpit, handler->flags);
+		if (err) {
+			__rtnl_unregister_many(handlers, i);
+			break;
+		}
+	}
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(__rtnl_register_many);
+
+void __rtnl_unregister_many(const struct rtnl_msg_handler *handlers, int n)
+{
+	const struct rtnl_msg_handler *handler;
+	int i;
+
+	for (i = n - 1, handler = handlers + n - 1; i >= 0; i--, handler--)
+		rtnl_unregister(handler->protocol, handler->msgtype);
+}
+EXPORT_SYMBOL_GPL(__rtnl_unregister_many);
+
 static LIST_HEAD(link_ops);
 
 static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind)
diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index 242c91a6e3d3..07d6aa4e39ef 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -647,6 +647,8 @@ BPF_CALL_4(bpf_sk_redirect_map, struct sk_buff *, skb,
 	sk = __sock_map_lookup_elem(map, key);
 	if (unlikely(!sk || !sock_map_redirect_allowed(sk)))
 		return SK_DROP;
+	if ((flags & BPF_F_INGRESS) && sk_is_vsock(sk))
+		return SK_DROP;
 
 	skb_bpf_set_redir(skb, sk, flags & BPF_F_INGRESS);
 	return SK_PASS;
@@ -675,6 +677,8 @@ BPF_CALL_4(bpf_msg_redirect_map, struct sk_msg *, msg,
 		return SK_DROP;
 	if (!(flags & BPF_F_INGRESS) && !sk_is_tcp(sk))
 		return SK_DROP;
+	if (sk_is_vsock(sk))
+		return SK_DROP;
 
 	msg->flags = flags;
 	msg->sk_redir = sk;
@@ -1249,6 +1253,8 @@ BPF_CALL_4(bpf_sk_redirect_hash, struct sk_buff *, skb,
 	sk = __sock_hash_lookup_elem(map, key);
 	if (unlikely(!sk || !sock_map_redirect_allowed(sk)))
 		return SK_DROP;
+	if ((flags & BPF_F_INGRESS) && sk_is_vsock(sk))
+		return SK_DROP;
 
 	skb_bpf_set_redir(skb, sk, flags & BPF_F_INGRESS);
 	return SK_PASS;
@@ -1277,6 +1283,8 @@ BPF_CALL_4(bpf_msg_redirect_hash, struct sk_msg *, msg,
 		return SK_DROP;
 	if (!(flags & BPF_F_INGRESS) && !sk_is_tcp(sk))
 		return SK_DROP;
+	if (sk_is_vsock(sk))
+		return SK_DROP;
 
 	msg->flags = flags;
 	msg->sk_redir = sk;