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>

1 files changed, 18 insertions, 18 deletions

diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index 47004f3..bd4c53f 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -93,14 +93,14 @@ struct rtable;
  *
  * @sk - ancestor class
  * @pinet6 - pointer to IPv6 control block
- * @daddr - Foreign IPv4 addr
- * @rcv_saddr - Bound local IPv4 addr
- * @dport - Destination port
- * @num - Local port
- * @saddr - Sending source
+ * @inet_daddr - Foreign IPv4 addr
+ * @inet_rcv_saddr - Bound local IPv4 addr
+ * @inet_dport - Destination port
+ * @inet_num - Local port
+ * @inet_saddr - Sending source
  * @uc_ttl - Unicast TTL
- * @sport - Source port
- * @id - ID counter for DF pkts
+ * @inet_sport - Source port
+ * @inet_id - ID counter for DF pkts
  * @tos - TOS
  * @mc_ttl - Multicasting TTL
  * @is_icsk - is this an inet_connection_sock?
@@ -115,16 +115,16 @@ struct inet_sock {
 	struct ipv6_pinfo	*pinet6;
 #endif
 	/* Socket demultiplex comparisons on incoming packets. */
-	__be32			daddr;
-	__be32			rcv_saddr;
-	__be16			dport;
-	__u16			num;
-	__be32			saddr;
+	__be32			inet_daddr;
+	__be32			inet_rcv_saddr;
+	__be16			inet_dport;
+	__u16			inet_num;
+	__be32			inet_saddr;
 	__s16			uc_ttl;
 	__u16			cmsg_flags;
 	struct ip_options	*opt;
-	__be16			sport;
-	__u16			id;
+	__be16			inet_sport;
+	__u16			inet_id;
 	__u8			tos;
 	__u8			mc_ttl;
 	__u8			pmtudisc;
@@ -190,10 +190,10 @@ static inline unsigned int inet_ehashfn(struct net *net,
 static inline int inet_sk_ehashfn(const struct sock *sk)
 {
 	const struct inet_sock *inet = inet_sk(sk);
-	const __be32 laddr = inet->rcv_saddr;
-	const __u16 lport = inet->num;
-	const __be32 faddr = inet->daddr;
-	const __be16 fport = inet->dport;
+	const __be32 laddr = inet->inet_rcv_saddr;
+	const __u16 lport = inet->inet_num;
+	const __be32 faddr = inet->inet_daddr;
+	const __be16 fport = inet->inet_dport;
 	struct net *net = sock_net(sk);
 
 	return inet_ehashfn(net, laddr, lport, faddr, fport);