[IPV6]: Deinline few large functions in inet6 code

Deinline a few functions which produce 200+ bytes of code.

Size  Uses Wasted Name and definition
===== ==== ====== ================================================
  429    3    818 __inet6_lookup        include/net/inet6_hashtables.h
  404    2    384 __inet6_lookup_established    include/net/inet6_hashtables.h
  206    3    372 __inet6_hash  include/net/inet6_hashtables.h

Signed-off-by: Denis Vlasenko <vda@ilport.com.ua>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h
index 25f708f..59f0c83 100644 (file)
--- a/include/net/inet6_hashtables.h
+++ b/include/net/inet6_hashtables.h
@@ -48,31 +48,7 @@ static inline int inet6_sk_ehashfn(const struct sock *sk)
        return inet6_ehashfn(laddr, lport, faddr, fport);
 }
 
-static inline void __inet6_hash(struct inet_hashinfo *hashinfo,
-                               struct sock *sk)
-{
-       struct hlist_head *list;
-       rwlock_t *lock;
-
-       BUG_TRAP(sk_unhashed(sk));
-
-       if (sk->sk_state == TCP_LISTEN) {
-               list = &hashinfo->listening_hash[inet_sk_listen_hashfn(sk)];
-               lock = &hashinfo->lhash_lock;
-               inet_listen_wlock(hashinfo);
-       } else {
-               unsigned int hash;
-               sk->sk_hash = hash = inet6_sk_ehashfn(sk);
-               hash &= (hashinfo->ehash_size - 1);
-               list = &hashinfo->ehash[hash].chain;
-               lock = &hashinfo->ehash[hash].lock;
-               write_lock(lock);
-       }
-
-       __sk_add_node(sk, list);
-       sock_prot_inc_use(sk->sk_prot);
-       write_unlock(lock);
-}
+extern void __inet6_hash(struct inet_hashinfo *hashinfo, struct sock *sk);
 
 /*
  * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so
@@ -80,52 +56,12 @@ static inline void __inet6_hash(struct inet_hashinfo *hashinfo,
  *
  * The sockhash lock must be held as a reader here.
  */
-static inline struct sock *
-               __inet6_lookup_established(struct inet_hashinfo *hashinfo,
+extern struct sock *__inet6_lookup_established(struct inet_hashinfo *hashinfo,
                                           const struct in6_addr *saddr,
                                           const u16 sport,
                                           const struct in6_addr *daddr,
                                           const u16 hnum,
-                                          const int dif)
-{
-       struct sock *sk;
-       const struct hlist_node *node;
-       const __u32 ports = INET_COMBINED_PORTS(sport, hnum);
-       /* Optimize here for direct hit, only listening connections can
-        * have wildcards anyways.
-        */
-       unsigned int hash = inet6_ehashfn(daddr, hnum, saddr, sport);
-       struct inet_ehash_bucket *head = inet_ehash_bucket(hashinfo, hash);
-
-       prefetch(head->chain.first);
-       read_lock(&head->lock);
-       sk_for_each(sk, node, &head->chain) {
-               /* For IPV6 do the cheaper port and family tests first. */
-               if (INET6_MATCH(sk, hash, saddr, daddr, ports, dif))
-                       goto hit; /* You sunk my battleship! */
-       }
-       /* Must check for a TIME_WAIT'er before going to listener hash. */
-       sk_for_each(sk, node, &(head + hashinfo->ehash_size)->chain) {
-               const struct inet_timewait_sock *tw = inet_twsk(sk);
-
-               if(*((__u32 *)&(tw->tw_dport))  == ports        &&
-                  sk->sk_family                == PF_INET6) {
-                       const struct inet6_timewait_sock *tw6 = inet6_twsk(sk);
-
-                       if (ipv6_addr_equal(&tw6->tw_v6_daddr, saddr)   &&
-                           ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr)       &&
-                           (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == dif))
-                               goto hit;
-               }
-       }
-       read_unlock(&head->lock);
-       return NULL;
-
-hit:
-       sock_hold(sk);
-       read_unlock(&head->lock);
-       return sk;
-}
+                                          const int dif);
 
 extern struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
                                          const struct in6_addr *daddr,

diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index bb8ffb8..2ae84c9 100644 (file)
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -23,6 +23,86 @@
 #include <net/inet6_hashtables.h>
 #include <net/ip.h>
 
+void __inet6_hash(struct inet_hashinfo *hashinfo,
+                               struct sock *sk)
+{
+       struct hlist_head *list;
+       rwlock_t *lock;
+
+       BUG_TRAP(sk_unhashed(sk));
+
+       if (sk->sk_state == TCP_LISTEN) {
+               list = &hashinfo->listening_hash[inet_sk_listen_hashfn(sk)];
+               lock = &hashinfo->lhash_lock;
+               inet_listen_wlock(hashinfo);
+       } else {
+               unsigned int hash;
+               sk->sk_hash = hash = inet6_sk_ehashfn(sk);
+               hash &= (hashinfo->ehash_size - 1);
+               list = &hashinfo->ehash[hash].chain;
+               lock = &hashinfo->ehash[hash].lock;
+               write_lock(lock);
+       }
+
+       __sk_add_node(sk, list);
+       sock_prot_inc_use(sk->sk_prot);
+       write_unlock(lock);
+}
+EXPORT_SYMBOL(__inet6_hash);
+
+/*
+ * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so
+ * we need not check it for TCP lookups anymore, thanks Alexey. -DaveM
+ *
+ * The sockhash lock must be held as a reader here.
+ */
+struct sock *__inet6_lookup_established(struct inet_hashinfo *hashinfo,
+                                          const struct in6_addr *saddr,
+                                          const u16 sport,
+                                          const struct in6_addr *daddr,
+                                          const u16 hnum,
+                                          const int dif)
+{
+       struct sock *sk;
+       const struct hlist_node *node;
+       const __u32 ports = INET_COMBINED_PORTS(sport, hnum);
+       /* Optimize here for direct hit, only listening connections can
+        * have wildcards anyways.
+        */
+       unsigned int hash = inet6_ehashfn(daddr, hnum, saddr, sport);
+       struct inet_ehash_bucket *head = inet_ehash_bucket(hashinfo, hash);
+
+       prefetch(head->chain.first);
+       read_lock(&head->lock);
+       sk_for_each(sk, node, &head->chain) {
+               /* For IPV6 do the cheaper port and family tests first. */
+               if (INET6_MATCH(sk, hash, saddr, daddr, ports, dif))
+                       goto hit; /* You sunk my battleship! */
+       }
+       /* Must check for a TIME_WAIT'er before going to listener hash. */
+       sk_for_each(sk, node, &(head + hashinfo->ehash_size)->chain) {
+               const struct inet_timewait_sock *tw = inet_twsk(sk);
+
+               if(*((__u32 *)&(tw->tw_dport))  == ports        &&
+                  sk->sk_family                == PF_INET6) {
+                       const struct inet6_timewait_sock *tw6 = inet6_twsk(sk);
+
+                       if (ipv6_addr_equal(&tw6->tw_v6_daddr, saddr)   &&
+                           ipv6_addr_equal(&tw6->tw_v6_rcv_saddr, daddr)       &&
+                           (!sk->sk_bound_dev_if || sk->sk_bound_dev_if == dif))
+                               goto hit;
+               }
+       }
+       read_unlock(&head->lock);
+       return NULL;
+
+hit:
+       sock_hold(sk);
+       read_unlock(&head->lock);
+       return sk;
+}
+EXPORT_SYMBOL(__inet6_lookup_established);
+
 struct sock *inet6_lookup_listener(struct inet_hashinfo *hashinfo,
                                   const struct in6_addr *daddr,
                                   const unsigned short hnum, const int dif)