[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, 6 insertions, 6 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 79996b16b942..97ea3eda206d 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3595,9 +3595,9 @@ static void tcp_fin(struct sk_buff *skb, struct sock *sk, struct tcphdr *th)
                 /* Do not send POLL_HUP for half duplex close. */
                 if (sk->sk_shutdown == SHUTDOWN_MASK ||
                     sk->sk_state == TCP_CLOSE)
-                        sk_wake_async(sk, 1, POLL_HUP);
+                        sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_HUP);
                 else
-                        sk_wake_async(sk, 1, POLL_IN);
+                        sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
         }
 }
 
@@ -4956,7 +4956,7 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
 
                 if (!sock_flag(sk, SOCK_DEAD)) {
                         sk->sk_state_change(sk);
-                        sk_wake_async(sk, 0, POLL_OUT);
+                        sk_wake_async(sk, SOCK_WAKE_IO, POLL_OUT);
                 }
 
                 if (sk->sk_write_pending ||
@@ -5186,9 +5186,9 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
                                  * are not waked up, because sk->sk_sleep ==
                                  * NULL and sk->sk_socket == NULL.
                                  */
-                                if (sk->sk_socket) {
-                                        sk_wake_async(sk,0,POLL_OUT);
-                                }
+                                if (sk->sk_socket)
+                                        sk_wake_async(sk,
+                                                        SOCK_WAKE_IO, POLL_OUT);
 
                                 tp->snd_una = TCP_SKB_CB(skb)->ack_seq;
                                 tp->snd_wnd = ntohs(th->window) <<