diff options
| author | Eric Dumazet <dada1@cosmosbay.com> | 2008-11-12 09:53:30 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-11-12 09:53:30 +0100 |
| commit | 8f424b5f32d78b4f353b3cddca9804808ef063eb (patch) | |
| tree | 4e481fd6ed7ab82c5d70c30a66842fa432065f64 /include | |
| parent | dccp: Resolve dependencies of features on choice of CCID (diff) | |
| download | linux-8f424b5f32d78b4f353b3cddca9804808ef063eb.tar.xz linux-8f424b5f32d78b4f353b3cddca9804808ef063eb.zip | |
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/net_namespace.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index 700c53a3c6fa..319557789a40 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) |