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, 6 insertions, 6 deletions

diff --git a/include/net/ip.h b/include/net/ip.h
index 2f47e5482b55..376adf47764e 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -240,8 +240,8 @@ static inline void ip_select_ident(struct iphdr *iph, struct dst_entry *dst, str
                  * does not change, they drop every other packet in
                  * a TCP stream using header compression.
                  */
-                iph->id = (sk && inet_sk(sk)->daddr) ?
-                                        htons(inet_sk(sk)->id++) : 0;
+                iph->id = (sk && inet_sk(sk)->inet_daddr) ?
+                                        htons(inet_sk(sk)->inet_id++) : 0;
         } else
                 __ip_select_ident(iph, dst, 0);
 }
@@ -249,9 +249,9 @@ static inline void ip_select_ident(struct iphdr *iph, struct dst_entry *dst, str
 static inline void ip_select_ident_more(struct iphdr *iph, struct dst_entry *dst, struct sock *sk, int more)
 {
         if (iph->frag_off & htons(IP_DF)) {
-                if (sk && inet_sk(sk)->daddr) {
-                        iph->id = htons(inet_sk(sk)->id);
-                        inet_sk(sk)->id += 1 + more;
+                if (sk && inet_sk(sk)->inet_daddr) {
+                        iph->id = htons(inet_sk(sk)->inet_id);
+                        inet_sk(sk)->inet_id += 1 + more;
                 } else
                         iph->id = 0;
         } else
@@ -317,7 +317,7 @@ static inline void ip_ib_mc_map(__be32 naddr, const unsigned char *broadcast, ch
 
 static __inline__ void inet_reset_saddr(struct sock *sk)
 {
-        inet_sk(sk)->rcv_saddr = inet_sk(sk)->saddr = 0;
+        inet_sk(sk)->inet_rcv_saddr = inet_sk(sk)->inet_saddr = 0;
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
         if (sk->sk_family == PF_INET6) {
                 struct ipv6_pinfo *np = inet6_sk(sk);