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authorJulian Anastasov <ja@ssi.bg>2013-03-22 11:46:38 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2013-04-02 00:23:48 +0200
commitfca9c20ae1e510525f8a2aaa25861789fd721193 (patch)
tree810ace8990d277c3dbad6632919b605c85ad316e /include/net/ip_vs.h
parent6b6df46663e7aa6f7b1d82435a3488f9b81316b3 (diff)
downloadop-kernel-dev-fca9c20ae1e510525f8a2aaa25861789fd721193.zip
op-kernel-dev-fca9c20ae1e510525f8a2aaa25861789fd721193.tar.gz
ipvs: add ip_vs_dest_hold and ip_vs_dest_put
ip_vs_dest_hold will be used under RCU lock while ip_vs_dest_put can be called even after dest is removed from service, as it happens for conns and some schedulers. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'include/net/ip_vs.h')
-rw-r--r--include/net/ip_vs.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index d91385c..7d3027f 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -1427,6 +1427,16 @@ ip_vs_find_dest(struct net *net, int af, const union nf_inet_addr *daddr,
__u16 protocol, __u32 fwmark, __u32 flags);
extern struct ip_vs_dest *ip_vs_try_bind_dest(struct ip_vs_conn *cp);
+static inline void ip_vs_dest_hold(struct ip_vs_dest *dest)
+{
+ atomic_inc(&dest->refcnt);
+}
+
+static inline void ip_vs_dest_put(struct ip_vs_dest *dest)
+{
+ smp_mb__before_atomic_dec();
+ atomic_dec(&dest->refcnt);
+}
/*
* IPVS sync daemon data and function prototypes
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