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net/udp: Update udp_encap_needed static key to modern api 

No changes in refcount semantics -- key init is false; replace

static_key_enable         with   static_branch_enable
static_key_slow_inc|dec   with   static_branch_inc|dec
static_key_false          with   static_branch_unlikely

Added a '_key' suffix to udp and udpv6 encap_needed, for better
self documentation.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Davidlohr Bueso 2018-05-08 09:07:03 -07:00 committed by David S. Miller
parent 02786475c7
commit 88ab31081b
2 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
net/ipv4/udp.c
View File

@ -1875,10 +1875,10 @@ static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
return 0;
}
static struct static_key udp_encap_needed __read_mostly;
static DEFINE_STATIC_KEY_FALSE(udp_encap_needed_key);
void udp_encap_enable(void)
{
static_key_enable(&udp_encap_needed);
static_branch_enable(&udp_encap_needed_key);
}
EXPORT_SYMBOL(udp_encap_enable);
@ -1902,7 +1902,7 @@ static 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_branch_unlikely(&udp_encap_needed_key) && up->encap_type) {
int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
/*
@ -2365,7 +2365,7 @@ 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_branch_unlikely(&udp_encap_needed_key) && up->encap_type) {
void (*encap_destroy)(struct sock *sk);
encap_destroy = READ_ONCE(up->encap_destroy);
if (encap_destroy)

8
net/ipv6/udp.c
View File

@ -546,10 +546,10 @@ 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 DEFINE_STATIC_KEY_FALSE(udpv6_encap_needed_key);
void udpv6_encap_enable(void)
{
static_key_enable(&udpv6_encap_needed);
static_branch_enable(&udpv6_encap_needed_key);
}
EXPORT_SYMBOL(udpv6_encap_enable);
@ -561,7 +561,7 @@ static 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_branch_unlikely(&udpv6_encap_needed_key) && up->encap_type) {
int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
/*
@ -1427,7 +1427,7 @@ 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_branch_unlikely(&udpv6_encap_needed_key) && up->encap_type) {
void (*encap_destroy)(struct sock *sk);
encap_destroy = READ_ONCE(up->encap_destroy);
if (encap_destroy)