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/dccp/probe.c b/net/dccp/probe.c
index 5e6ec8b..dc32842 100644
--- a/net/dccp/probe.c
+++ b/net/dccp/probe.c
@@ -80,19 +80,20 @@
 	if (ccid_get_current_tx_ccid(dccp_sk(sk)) == DCCPC_CCID3)
 		hc = ccid3_hc_tx_sk(sk);
 
-	if (port == 0 || ntohs(inet->dport) == port ||
-	    ntohs(inet->sport) == port) {
+	if (port == 0 || ntohs(inet->inet_dport) == port ||
+	    ntohs(inet->inet_sport) == port) {
 		if (hc)
 			printl("%pI4:%u %pI4:%u %d %d %d %d %u %llu %llu %d\n",
-			       &inet->saddr, ntohs(inet->sport),
-			       &inet->daddr, ntohs(inet->dport), size,
+			       &inet->inet_saddr, ntohs(inet->inet_sport),
+			       &inet->inet_daddr, ntohs(inet->inet_dport), size,
 			       hc->tx_s, hc->tx_rtt, hc->tx_p,
 			       hc->tx_x_calc, hc->tx_x_recv >> 6,
 			       hc->tx_x >> 6, hc->tx_t_ipi);
 		else
 			printl("%pI4:%u %pI4:%u %d\n",
-			       &inet->saddr, ntohs(inet->sport),
-			       &inet->daddr, ntohs(inet->dport), size);
+			       &inet->inet_saddr, ntohs(inet->inet_sport),
+			       &inet->inet_daddr, ntohs(inet->inet_dport),
+			       size);
 	}
 
 	jprobe_return();