inet: rename some inet_sock fields

In order to have better cache layouts of struct sock (separate zones
for rx/tx paths), we need this preliminary patch.

Goal is to transfert fields used at lookup time in the first
read-mostly cache line (inside struct sock_common) and move sk_refcnt
to a separate cache line (only written by rx path)

This patch adds inet_ prefix to daddr, rcv_saddr, dport, num, saddr,
sport and id fields. This allows a future patch to define these
fields as macros, like sk_refcnt, without name clashes.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index a9f4a21b..19dceef 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -132,7 +132,7 @@
 
 	sin6->sin6_family = AF_INET6;
 	ipv6_addr_copy(&sin6->sin6_addr, &np->daddr);
-	sin6->sin6_port	= inet_sk(sk)->dport;
+	sin6->sin6_port	= inet_sk(sk)->inet_dport;
 	/* We do not store received flowlabel for TCP */
 	sin6->sin6_flowinfo = 0;
 	sin6->sin6_scope_id = 0;
@@ -195,8 +195,8 @@
 	IP6_ECN_flow_xmit(sk, fl.fl6_flowlabel);
 	fl.oif = sk->sk_bound_dev_if;
 	fl.mark = sk->sk_mark;
-	fl.fl_ip_sport = inet->sport;
-	fl.fl_ip_dport = inet->dport;
+	fl.fl_ip_sport = inet->inet_sport;
+	fl.fl_ip_dport = inet->inet_dport;
 	security_sk_classify_flow(sk, &fl);
 
 	if (np->opt && np->opt->srcrt) {