From 5ee31fc1ecdcbc234c8c56dcacef87c8e09909d8 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Thu, 31 Jan 2008 05:04:45 -0800 Subject: [INET]: Consolidate inet(6)_hash_connect. These two functions are the same except for what they call to "check_established" and "hash" for a socket. This saves half-a-kilo for ipv4 and ipv6. add/remove: 1/0 grow/shrink: 1/4 up/down: 582/-1128 (-546) function old new delta __inet_hash_connect - 577 +577 arp_ignore 108 113 +5 static.hint 8 4 -4 rt_worker_func 376 372 -4 inet6_hash_connect 584 25 -559 inet_hash_connect 586 25 -561 Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/ipv6/inet6_hashtables.c | 93 +-------------------------------------------- 1 file changed, 2 insertions(+), 91 deletions(-) (limited to 'net/ipv6') diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c index 06b01befc90e..ece6d0ee2da5 100644 --- a/net/ipv6/inet6_hashtables.c +++ b/net/ipv6/inet6_hashtables.c @@ -233,97 +233,8 @@ static inline u32 inet6_sk_port_offset(const struct sock *sk) int inet6_hash_connect(struct inet_timewait_death_row *death_row, struct sock *sk) { - struct inet_hashinfo *hinfo = death_row->hashinfo; - const unsigned short snum = inet_sk(sk)->num; - struct inet_bind_hashbucket *head; - struct inet_bind_bucket *tb; - int ret; - - if (snum == 0) { - int i, port, low, high, remaining; - static u32 hint; - const u32 offset = hint + inet6_sk_port_offset(sk); - struct hlist_node *node; - struct inet_timewait_sock *tw = NULL; - - inet_get_local_port_range(&low, &high); - remaining = (high - low) + 1; - - local_bh_disable(); - for (i = 1; i <= remaining; i++) { - port = low + (i + offset) % remaining; - head = &hinfo->bhash[inet_bhashfn(port, hinfo->bhash_size)]; - spin_lock(&head->lock); - - /* Does not bother with rcv_saddr checks, - * because the established check is already - * unique enough. - */ - inet_bind_bucket_for_each(tb, node, &head->chain) { - if (tb->port == port) { - BUG_TRAP(!hlist_empty(&tb->owners)); - if (tb->fastreuse >= 0) - goto next_port; - if (!__inet6_check_established(death_row, - sk, port, - &tw)) - goto ok; - goto next_port; - } - } - - tb = inet_bind_bucket_create(hinfo->bind_bucket_cachep, - head, port); - if (!tb) { - spin_unlock(&head->lock); - break; - } - tb->fastreuse = -1; - goto ok; - - next_port: - spin_unlock(&head->lock); - } - local_bh_enable(); - - return -EADDRNOTAVAIL; - -ok: - hint += i; - - /* Head lock still held and bh's disabled */ - inet_bind_hash(sk, tb, port); - if (sk_unhashed(sk)) { - inet_sk(sk)->sport = htons(port); - __inet6_hash(hinfo, sk); - } - spin_unlock(&head->lock); - - if (tw) { - inet_twsk_deschedule(tw, death_row); - inet_twsk_put(tw); - } - - ret = 0; - goto out; - } - - head = &hinfo->bhash[inet_bhashfn(snum, hinfo->bhash_size)]; - tb = inet_csk(sk)->icsk_bind_hash; - spin_lock_bh(&head->lock); - - if (sk_head(&tb->owners) == sk && sk->sk_bind_node.next == NULL) { - __inet6_hash(hinfo, sk); - spin_unlock_bh(&head->lock); - return 0; - } else { - spin_unlock(&head->lock); - /* No definite answer... Walk to established hash table */ - ret = __inet6_check_established(death_row, sk, snum, NULL); -out: - local_bh_enable(); - return ret; - } + return __inet_hash_connect(death_row, sk, + __inet6_check_established, __inet6_hash); } EXPORT_SYMBOL_GPL(inet6_hash_connect); -- cgit v1.2.2