Commit 8f424b5f authored Nov 12, 2008 by Eric Dumazet Committed by David S. Miller Nov 12, 2008

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 <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 9eca0a47

include/net/net_namespace.h

+18 −0

Original line number	Diff line number	Diff line
		@@ -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)

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