o net: create struct sock_common and use in struct sock & tcp_tw_bucket

With this the data dependency is reduced to just making sure that the first
member of both struct sock and struct tcp_tw_bucket are a struct sock_common.

Also makes it easier to grep for struct sock and struct tcp_tw_bucket usage in
the tree as all the members in those structs are prefixed, respectively, with
sk_ and tw_, like struct inode (i_), struct block_device (bd_), etc.

Checked namespace with make tags/ctags, just one colision with the macros for
the struct sock members, with a wanrouter struct, fixed that
s/sk_state/state_sk/g in the wanrouter struct.

Checked as well if the names of the members in both structs collided with some
macro, none found.

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ax25/ax25_std_in.c b/net/ax25/ax25_std_in.c
index 7abbee89d093..ac30541d95a4 100644
--- a/net/ax25/ax25_std_in.c
+++ b/net/ax25/ax25_std_in.c
@@ -73,10 +73,10 @@ static int ax25_std_state1_machine(ax25_cb *ax25, struct sk_buff *skb, int frame
 			ax25->state   = AX25_STATE_3;
 			ax25->n2count = 0;
 			if (ax25->sk != NULL) {
-				ax25->sk->state = TCP_ESTABLISHED;
+				ax25->sk->sk_state = TCP_ESTABLISHED;
 				/* For WAIT_SABM connections we will produce an accept ready socket here */
 				if (!sock_flag(ax25->sk, SOCK_DEAD))
-					ax25->sk->state_change(ax25->sk);
+					ax25->sk->sk_state_change(ax25->sk);
 			}
 		}
 		break;