From fca9c20ae1e510525f8a2aaa25861789fd721193 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Fri, 22 Mar 2013 11:46:38 +0200 Subject: 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 Signed-off-by: Simon Horman --- include/net/ip_vs.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/net/ip_vs.h') diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index d91385c1b3a..7d3027f2c06 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 -- cgit v1.2.3-70-g09d2