net: use indirect calls helpers at early demux stage

So that we avoid another indirect call per RX packet, if
early demux is enabled.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 6 insertions, 3 deletions

diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index adf06159837f..b50b1af1f530 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -48,6 +48,8 @@
 #include <net/inet_ecn.h>
 #include <net/dst_metadata.h>
 
+INDIRECT_CALLABLE_DECLARE(void udp_v6_early_demux(struct sk_buff *));
+INDIRECT_CALLABLE_DECLARE(void tcp_v6_early_demux(struct sk_buff *));
 static void ip6_rcv_finish_core(struct net *net, struct sock *sk,
                                 struct sk_buff *skb)
 {
@@ -58,7 +60,8 @@ static void ip6_rcv_finish_core(struct net *net, struct sock *sk,
 
                 ipprot = rcu_dereference(inet6_protos[ipv6_hdr(skb)->nexthdr]);
                 if (ipprot && (edemux = READ_ONCE(ipprot->early_demux)))
-                        edemux(skb);
+                        INDIRECT_CALL_2(edemux, tcp_v6_early_demux,
+                                        udp_v6_early_demux, skb);
         }
         if (!skb_valid_dst(skb))
                 ip6_route_input(skb);
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index d58bf84e0f9a..beaf28456301 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1655,7 +1655,7 @@ do_time_wait:
         goto discard_it;
 }
 
-static void tcp_v6_early_demux(struct sk_buff *skb)
+INDIRECT_CALLABLE_SCOPE void tcp_v6_early_demux(struct sk_buff *skb)
 {
         const struct ipv6hdr *hdr;
         const struct tcphdr *th;
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index b3fcafaf5576..07fa579dfb96 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -981,7 +981,7 @@ static struct sock *__udp6_lib_demux_lookup(struct net *net,
         return NULL;
 }
 
-static void udp_v6_early_demux(struct sk_buff *skb)
+INDIRECT_CALLABLE_SCOPE void udp_v6_early_demux(struct sk_buff *skb)
 {
         struct net *net = dev_net(skb->dev);
         const struct udphdr *uh;