linux-kernel - [PATCH 3/3] udp: make use of static_key_slow_set

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Message-Id: <7fe0eaba62a8529b387ddb3205713d8bb6156ec1.1372457176.git.jbaron@akamai.com>
Date:	Fri, 28 Jun 2013 22:30:49 +0000 (GMT)
From:	jbaron@...mai.com
To:	rostedt@...dmis.org, andi@...stfloor.org
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	mingo@...nel.org, peterz@...radead.org, davem@...emloft.net
Subject: [PATCH 3/3] udp: make use of static_key_slow_set_true() interface

Make use of the simpler API.

Signed-off-by: Jason Baron <jbaron@...mai.com>
---
 net/ipv4/udp.c |    9 ++++-----
 net/ipv6/udp.c |    9 ++++-----
 2 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 0bf5d39..b8d0029 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1421,11 +1421,10 @@ static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 
 }
 
-static struct static_key udp_encap_needed __read_mostly;
+static struct static_key_boolean udp_encap_needed __read_mostly;
 void udp_encap_enable(void)
 {
-	if (!static_key_enabled(&udp_encap_needed))
-		static_key_slow_inc(&udp_encap_needed);
+	static_key_slow_set_true(&udp_encap_needed);
 }
 EXPORT_SYMBOL(udp_encap_enable);
 
@@ -1450,7 +1449,7 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 		goto drop;
 	nf_reset(skb);
 
-	if (static_key_false(&udp_encap_needed) && up->encap_type) {
+	if (static_key_false(&udp_encap_needed.key) && up->encap_type) {
 		int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
 
 		/*
@@ -1773,7 +1772,7 @@ void udp_destroy_sock(struct sock *sk)
 	bool slow = lock_sock_fast(sk);
 	udp_flush_pending_frames(sk);
 	unlock_sock_fast(sk, slow);
-	if (static_key_false(&udp_encap_needed) && up->encap_type) {
+	if (static_key_false(&udp_encap_needed.key) && up->encap_type) {
 		void (*encap_destroy)(struct sock *sk);
 		encap_destroy = ACCESS_ONCE(up->encap_destroy);
 		if (encap_destroy)
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 42923b1..94a4091 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -573,11 +573,10 @@ static __inline__ void udpv6_err(struct sk_buff *skb,
 	__udp6_lib_err(skb, opt, type, code, offset, info, &udp_table);
 }
 
-static struct static_key udpv6_encap_needed __read_mostly;
+static struct static_key_boolean udpv6_encap_needed __read_mostly;
 void udpv6_encap_enable(void)
 {
-	if (!static_key_enabled(&udpv6_encap_needed))
-		static_key_slow_inc(&udpv6_encap_needed);
+	static_key_slow_set_true(&udpv6_encap_needed);
 }
 EXPORT_SYMBOL(udpv6_encap_enable);
 
@@ -590,7 +589,7 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 	if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto drop;
 
-	if (static_key_false(&udpv6_encap_needed) && up->encap_type) {
+	if (static_key_false(&udpv6_encap_needed.key) && up->encap_type) {
 		int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
 
 		/*
@@ -1300,7 +1299,7 @@ void udpv6_destroy_sock(struct sock *sk)
 	udp_v6_flush_pending_frames(sk);
 	release_sock(sk);
 
-	if (static_key_false(&udpv6_encap_needed) && up->encap_type) {
+	if (static_key_false(&udpv6_encap_needed.key) && up->encap_type) {
 		void (*encap_destroy)(struct sock *sk);
 		encap_destroy = ACCESS_ONCE(up->encap_destroy);
 		if (encap_destroy)
-- 
1.7.9.5

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