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-rw-r--r--include/net/addrconf.h5
-rw-r--r--net/core/filter.c12
-rw-r--r--net/ipv6/af_inet6.c1
3 files changed, 13 insertions, 5 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 6def0351bcc3..14b789a123e7 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -265,6 +265,11 @@ extern const struct ipv6_stub *ipv6_stub __read_mostly;
struct ipv6_bpf_stub {
int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len,
bool force_bind_address_no_port, bool with_lock);
+ struct sock *(*udp6_lib_lookup)(struct net *net,
+ const struct in6_addr *saddr, __be16 sport,
+ const struct in6_addr *daddr, __be16 dport,
+ int dif, int sdif, struct udp_table *tbl,
+ struct sk_buff *skb);
};
extern const struct ipv6_bpf_stub *ipv6_bpf_stub __read_mostly;
diff --git a/net/core/filter.c b/net/core/filter.c
index 0f5260b04bfe..f76ba31a8cc7 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -4717,7 +4717,7 @@ static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple,
sk = __udp4_lib_lookup(net, src4, tuple->ipv4.sport,
dst4, tuple->ipv4.dport,
dif, sdif, &udp_table, skb);
-#if IS_REACHABLE(CONFIG_IPV6)
+#if IS_ENABLED(CONFIG_IPV6)
} else {
struct in6_addr *src6 = (struct in6_addr *)&tuple->ipv6.saddr;
struct in6_addr *dst6 = (struct in6_addr *)&tuple->ipv6.daddr;
@@ -4728,10 +4728,12 @@ static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple,
src6, tuple->ipv6.sport,
dst6, tuple->ipv6.dport,
dif, sdif, &refcounted);
- else
- sk = __udp6_lib_lookup(net, src6, tuple->ipv6.sport,
- dst6, tuple->ipv6.dport,
- dif, sdif, &udp_table, skb);
+ else if (likely(ipv6_bpf_stub))
+ sk = ipv6_bpf_stub->udp6_lib_lookup(net,
+ src6, tuple->ipv6.sport,
+ dst6, tuple->ipv6.dport,
+ dif, sdif,
+ &udp_table, skb);
#endif
}
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index e9c8cfdf4b4c..3f4d61017a69 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -901,6 +901,7 @@ static const struct ipv6_stub ipv6_stub_impl = {
static const struct ipv6_bpf_stub ipv6_bpf_stub_impl = {
.inet6_bind = __inet6_bind,
+ .udp6_lib_lookup = __udp6_lib_lookup,
};
static int __init inet6_init(void)