net: use indirect calls helpers for L3 handler hooks
So that we avoid another indirect call per RX packet in the common
case.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index c7ed2b6..adf0615 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -29,6 +29,7 @@
#include <linux/icmpv6.h>
#include <linux/mroute6.h>
#include <linux/slab.h>
+#include <linux/indirect_call_wrapper.h>
#include <linux/netfilter.h>
#include <linux/netfilter_ipv6.h>
@@ -316,6 +317,9 @@ void ipv6_list_rcv(struct list_head *head, struct packet_type *pt,
ip6_sublist_rcv(&sublist, curr_dev, curr_net);
}
+INDIRECT_CALLABLE_DECLARE(int udpv6_rcv(struct sk_buff *));
+INDIRECT_CALLABLE_DECLARE(int tcp_v6_rcv(struct sk_buff *));
+
/*
* Deliver the packet to the host
*/
@@ -391,7 +395,8 @@ void ip6_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int nexthdr,
!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
goto discard;
- ret = ipprot->handler(skb);
+ ret = INDIRECT_CALL_2(ipprot->handler, tcp_v6_rcv, udpv6_rcv,
+ skb);
if (ret > 0) {
if (ipprot->flags & INET6_PROTO_FINAL) {
/* Not an extension header, most likely UDP
