tcp: shrink tcp6_timewait_sock by one cache line

[~andy/linux] / include / net / inet_timewait_sock.h

diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
index f908dfc06505850b54e6868c53da957ff71c3527..f528d1b0ac951bba9c247a28f1955d2693ee6138 100644 (file)
--- a/include/net/inet_timewait_sock.h
+++ b/include/net/inet_timewait_sock.h
@@ -58,6 +58,11 @@ struct inet_hashinfo;
 # define INET_TWDR_RECYCLE_TICK (12 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG)
 #endif
 
+static inline u32 inet_tw_time_stamp(void)
+{
+       return jiffies;
+}
+
 /* TIME_WAIT reaping mechanism. */
 #define INET_TWDR_TWKILL_SLOTS 8 /* Please keep this a power of 2. */
 
@@ -83,9 +88,9 @@ struct inet_timewait_death_row {
        int                     sysctl_max_tw_buckets;
 };
 
-extern void inet_twdr_hangman(unsigned long data);
-extern void inet_twdr_twkill_work(struct work_struct *work);
-extern void inet_twdr_twcal_tick(unsigned long data);
+void inet_twdr_hangman(unsigned long data);
+void inet_twdr_twkill_work(struct work_struct *work);
+void inet_twdr_twcal_tick(unsigned long data);
 
 struct inet_bind_bucket;
 
@@ -112,10 +117,8 @@ struct inet_timewait_sock {
 #define tw_net                 __tw_common.skc_net
 #define tw_daddr               __tw_common.skc_daddr
 #define tw_rcv_saddr           __tw_common.skc_rcv_saddr
-#define tw_addrpair            __tw_common.skc_addrpair
 #define tw_dport               __tw_common.skc_dport
 #define tw_num                 __tw_common.skc_num
-#define tw_portpair            __tw_common.skc_portpair
 
        int                     tw_timeout;
        volatile unsigned char  tw_substate;
@@ -132,7 +135,7 @@ struct inet_timewait_sock {
                                tw_tos          : 8,
                                tw_ipv6_offset  : 16;
        kmemcheck_bitfield_end(flags);
-       unsigned long           tw_ttd;
+       u32                     tw_ttd;
        struct inet_bind_bucket *tw_tb;
        struct hlist_node       tw_death_node;
 };
@@ -189,34 +192,27 @@ static inline struct inet_timewait_sock *inet_twsk(const struct sock *sk)
        return (struct inet_timewait_sock *)sk;
 }
 
-static inline __be32 sk_rcv_saddr(const struct sock *sk)
-{
-/* both inet_sk() and inet_twsk() store rcv_saddr in skc_rcv_saddr */
-       return sk->__sk_common.skc_rcv_saddr;
-}
-
-extern void inet_twsk_put(struct inet_timewait_sock *tw);
+void inet_twsk_put(struct inet_timewait_sock *tw);
 
-extern int inet_twsk_unhash(struct inet_timewait_sock *tw);
+int inet_twsk_unhash(struct inet_timewait_sock *tw);
 
-extern int inet_twsk_bind_unhash(struct inet_timewait_sock *tw,
-                                struct inet_hashinfo *hashinfo);
+int inet_twsk_bind_unhash(struct inet_timewait_sock *tw,
+                         struct inet_hashinfo *hashinfo);
 
-extern struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk,
-                                                 const int state);
+struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk,
+                                          const int state);
 
-extern void __inet_twsk_hashdance(struct inet_timewait_sock *tw,
-                                 struct sock *sk,
-                                 struct inet_hashinfo *hashinfo);
+void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
+                          struct inet_hashinfo *hashinfo);
 
-extern void inet_twsk_schedule(struct inet_timewait_sock *tw,
-                              struct inet_timewait_death_row *twdr,
-                              const int timeo, const int timewait_len);
-extern void inet_twsk_deschedule(struct inet_timewait_sock *tw,
-                                struct inet_timewait_death_row *twdr);
+void inet_twsk_schedule(struct inet_timewait_sock *tw,
+                       struct inet_timewait_death_row *twdr,
+                       const int timeo, const int timewait_len);
+void inet_twsk_deschedule(struct inet_timewait_sock *tw,
+                         struct inet_timewait_death_row *twdr);
 
-extern void inet_twsk_purge(struct inet_hashinfo *hashinfo,
-                           struct inet_timewait_death_row *twdr, int family);
+void inet_twsk_purge(struct inet_hashinfo *hashinfo,
+                    struct inet_timewait_death_row *twdr, int family);
 
 static inline
 struct net *twsk_net(const struct inet_timewait_sock *twsk)