From 8f424b5f32d78b4f353b3cddca9804808ef063eb Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 12 Nov 2008 00:53:30 -0800 Subject: net: Introduce read_pnet() and write_pnet() helpers This patch introduces two helpers that deal with reading and writing struct net pointers in various network structures. Their implementation depends on CONFIG_NET_NS For symmetry, both functions work with "struct net **pnet". Their usage should reduce the number of #ifdef CONFIG_NET_NS, without adding many helpers for each network structure that hold a "struct net *pointer" Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/net_namespace.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index 700c53a3c6f..319557789a4 100644 --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -192,6 +192,24 @@ static inline void release_net(struct net *net) } #endif +#ifdef CONFIG_NET_NS + +static inline void write_pnet(struct net **pnet, struct net *net) +{ + *pnet = net; +} + +static inline struct net *read_pnet(struct net * const *pnet) +{ + return *pnet; +} + +#else + +#define write_pnet(pnet, net) do { (void)(net);} while (0) +#define read_pnet(pnet) (&init_net) + +#endif #define for_each_net(VAR) \ list_for_each_entry(VAR, &net_namespace_list, list) -- cgit v1.2.3