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authorEric W. Biederman <ebiederm@xmission.com>2015-03-12 07:06:44 +0300
committerDavid S. Miller <davem@davemloft.net>2015-03-12 21:39:40 +0300
commit0c5c9fb55106333e773de8c9dd321fa8240caeb3 (patch)
treeda550b771a52ba583eb97c1ad00fffbf3ae17f73 /net/packet/internal.h
parentefd7ef1c1929d7a0329d4349252863c04d6f1729 (diff)
downloadlinux-0c5c9fb55106333e773de8c9dd321fa8240caeb3.tar.xz
net: Introduce possible_net_t
Having to say > #ifdef CONFIG_NET_NS > struct net *net; > #endif in structures is a little bit wordy and a little bit error prone. Instead it is possible to say: > typedef struct { > #ifdef CONFIG_NET_NS > struct net *net; > #endif > } possible_net_t; And then in a header say: > possible_net_t net; Which is cleaner and easier to use and easier to test, as the possible_net_t is always there no matter what the compile options. Further this allows read_pnet and write_pnet to be functions in all cases which is better at catching typos. This change adds possible_net_t, updates the definitions of read_pnet and write_pnet, updates optional struct net * variables that write_pnet uses on to have the type possible_net_t, and finally fixes up the b0rked users of read_pnet and write_pnet. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/packet/internal.h')
-rw-r--r--net/packet/internal.h4
1 files changed, 1 insertions, 3 deletions
diff --git a/net/packet/internal.h b/net/packet/internal.h
index cdddf6a30399..fe6e20caea1d 100644
--- a/net/packet/internal.h
+++ b/net/packet/internal.h
@@ -74,9 +74,7 @@ extern struct mutex fanout_mutex;
#define PACKET_FANOUT_MAX 256
struct packet_fanout {
-#ifdef CONFIG_NET_NS
- struct net *net;
-#endif
+ possible_net_t net;
unsigned int num_members;
u16 id;
u8 type;