[NET]: Name magic constants in sock_wake_async()

The sock_wake_async() performs a bit different actions
depending on "how" argument. Unfortunately this argument
ony has numerical magic values.

I propose to give names to their constants to help people
reading this function callers understand what's going on
without looking into this function all the time.

I suppose this is 2.6.25 material, but if it's not (or the
naming seems poor/bad/awful), I can rework it against the
current net-2.6 tree.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/net.h b/include/linux/net.h
index 0235d917d5c3..f95f12c5840c 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -186,6 +186,13 @@ struct net_proto_family {
 struct iovec;
 struct kvec;
 
+enum {
+        SOCK_WAKE_IO,
+        SOCK_WAKE_WAITD,
+        SOCK_WAKE_SPACE,
+        SOCK_WAKE_URG,
+};
+
 extern int           sock_wake_async(struct socket *sk, int how, int band);
 extern int           sock_register(const struct net_proto_family *fam);
 extern void          sock_unregister(int family);