[PATCH net-next v3 1/4] net: use indirect call helpers for dst_input
From: Brian Vazquez <hidden>
Date: 2021-02-01 17:42:41
Also in:
lkml
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
This patch avoids the indirect call for the common case: ip_local_deliver and ip6_input Signed-off-by: Brian Vazquez <redacted> --- include/net/dst.h | 6 +++++- net/ipv4/ip_input.c | 1 + 2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/net/dst.h b/include/net/dst.h
index 10f0a8399867..98cf6e8c06c4 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h@@ -18,6 +18,7 @@ #include <linux/refcount.h> #include <net/neighbour.h> #include <asm/processor.h> +#include <linux/indirect_call_wrapper.h> struct sk_buff;
@@ -441,10 +442,13 @@ static inline int dst_output(struct net *net, struct sock *sk, struct sk_buff *s return skb_dst(skb)->output(net, sk, skb); } +INDIRECT_CALLABLE_DECLARE(int ip6_input(struct sk_buff *)); +INDIRECT_CALLABLE_DECLARE(int ip_local_deliver(struct sk_buff *)); /* Input packet from network to transport. */ static inline int dst_input(struct sk_buff *skb) { - return skb_dst(skb)->input(skb); + return INDIRECT_CALL_INET(skb_dst(skb)->input, + ip6_input, ip_local_deliver, skb); } static inline struct dst_entry *dst_check(struct dst_entry *dst, u32 cookie)
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index b0c244af1e4d..3a025c011971 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c@@ -253,6 +253,7 @@ int ip_local_deliver(struct sk_buff *skb) net, NULL, skb, skb->dev, NULL, ip_local_deliver_finish); } +EXPORT_SYMBOL(ip_local_deliver); static inline bool ip_rcv_options(struct sk_buff *skb, struct net_device *dev) {
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2.30.0.365.g02bc693789-goog