[INET]: Move tcp_port_rover to inet_hashinfo

Also expose all of the tcp_hashinfo members, i.e. killing those
tcp_ehash, etc macros, this will more clearly expose already generic
functions and some that need just a bit of work to become generic, as
we'll see in the upcoming changesets.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 109 insertions, 108 deletions

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 38c04c1a754c..2f4b1a374bb7 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2257,11 +2257,11 @@ void __init tcp_init(void)
                 __skb_cb_too_small_for_tcp(sizeof(struct tcp_skb_cb),
                                            sizeof(skb->cb));
 
-        tcp_bucket_cachep = kmem_cache_create("tcp_bind_bucket",
-                                              sizeof(struct inet_bind_bucket),
-                                              0, SLAB_HWCACHE_ALIGN,
-                                              NULL, NULL);
-        if (!tcp_bucket_cachep)
+        tcp_hashinfo.bind_bucket_cachep =
+                kmem_cache_create("tcp_bind_bucket",
+                                  sizeof(struct inet_bind_bucket), 0,
+                                  SLAB_HWCACHE_ALIGN, NULL, NULL);
+        if (!tcp_hashinfo.bind_bucket_cachep)
                 panic("tcp_init: Cannot alloc tcp_bind_bucket cache.");
 
         tcp_timewait_cachep = kmem_cache_create("tcp_tw_bucket",
@@ -2276,7 +2276,7 @@ void __init tcp_init(void)
          *
          * The methodology is similar to that of the buffer cache.
          */
-        tcp_ehash =
+        tcp_hashinfo.ehash =
                 alloc_large_system_hash("TCP established",
                                         sizeof(struct inet_ehash_bucket),
                                         thash_entries,
@@ -2284,37 +2284,37 @@ void __init tcp_init(void)
                                                 (25 - PAGE_SHIFT) :
                                                 (27 - PAGE_SHIFT),
                                         HASH_HIGHMEM,
-                                        &tcp_ehash_size,
+                                        &tcp_hashinfo.ehash_size,
                                         NULL,
                                         0);
-        tcp_ehash_size = (1 << tcp_ehash_size) >> 1;
-        for (i = 0; i < (tcp_ehash_size << 1); i++) {
-                rwlock_init(&tcp_ehash[i].lock);
-                INIT_HLIST_HEAD(&tcp_ehash[i].chain);
+        tcp_hashinfo.ehash_size = (1 << tcp_hashinfo.ehash_size) >> 1;
+        for (i = 0; i < (tcp_hashinfo.ehash_size << 1); i++) {
+                rwlock_init(&tcp_hashinfo.ehash[i].lock);
+                INIT_HLIST_HEAD(&tcp_hashinfo.ehash[i].chain);
         }
 
-        tcp_bhash =
+        tcp_hashinfo.bhash =
                 alloc_large_system_hash("TCP bind",
                                         sizeof(struct inet_bind_hashbucket),
-                                        tcp_ehash_size,
+                                        tcp_hashinfo.ehash_size,
                                         (num_physpages >= 128 * 1024) ?
                                                 (25 - PAGE_SHIFT) :
                                                 (27 - PAGE_SHIFT),
                                         HASH_HIGHMEM,
-                                        &tcp_bhash_size,
+                                        &tcp_hashinfo.bhash_size,
                                         NULL,
                                         64 * 1024);
-        tcp_bhash_size = 1 << tcp_bhash_size;
-        for (i = 0; i < tcp_bhash_size; i++) {
-                spin_lock_init(&tcp_bhash[i].lock);
-                INIT_HLIST_HEAD(&tcp_bhash[i].chain);
+        tcp_hashinfo.bhash_size = 1 << tcp_hashinfo.bhash_size;
+        for (i = 0; i < tcp_hashinfo.bhash_size; i++) {
+                spin_lock_init(&tcp_hashinfo.bhash[i].lock);
+                INIT_HLIST_HEAD(&tcp_hashinfo.bhash[i].chain);
         }
 
         /* Try to be a bit smarter and adjust defaults depending
          * on available memory.
          */
         for (order = 0; ((1 << order) << PAGE_SHIFT) <
-                        (tcp_bhash_size * sizeof(struct inet_bind_hashbucket));
+                        (tcp_hashinfo.bhash_size * sizeof(struct inet_bind_hashbucket));
                         order++)
                 ;
         if (order >= 4) {
@@ -2329,7 +2329,7 @@ void __init tcp_init(void)
                 sysctl_tcp_max_orphans >>= (3 - order);
                 sysctl_max_syn_backlog = 128;
         }
-        tcp_port_rover = sysctl_local_port_range[0] - 1;
+        tcp_hashinfo.port_rover = sysctl_local_port_range[0] - 1;
 
         sysctl_tcp_mem[0] =  768 << order;
         sysctl_tcp_mem[1] = 1024 << order;
@@ -2344,7 +2344,7 @@ void __init tcp_init(void)
 
         printk(KERN_INFO "TCP: Hash tables configured "
                "(established %d bind %d)\n",
-               tcp_ehash_size << 1, tcp_bhash_size);
+               tcp_hashinfo.ehash_size << 1, tcp_hashinfo.bhash_size);
 
         tcp_register_congestion_control(&tcp_reno);
 }
diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index 5bb6a0f1c77b..0ae738b455f0 100644
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -595,7 +595,7 @@ static int tcpdiag_dump(struct sk_buff *skb, struct netlink_callback *cb)
                         struct hlist_node *node;
 
                         num = 0;
-                        sk_for_each(sk, node, &tcp_listening_hash[i]) {
+                        sk_for_each(sk, node, &tcp_hashinfo.listening_hash[i]) {
                                 struct inet_sock *inet = inet_sk(sk);
 
                                 if (num < s_num) {
@@ -645,8 +645,8 @@ skip_listen_ht:
         if (!(r->tcpdiag_states&~(TCPF_LISTEN|TCPF_SYN_RECV)))
                 return skb->len;
 
-        for (i = s_i; i < tcp_ehash_size; i++) {
-                struct inet_ehash_bucket *head = &tcp_ehash[i];
+        for (i = s_i; i < tcp_hashinfo.ehash_size; i++) {
+                struct inet_ehash_bucket *head = &tcp_hashinfo.ehash[i];
                 struct sock *sk;
                 struct hlist_node *node;
 
@@ -678,7 +678,7 @@ next_normal:
 
                 if (r->tcpdiag_states&TCPF_TIME_WAIT) {
                         sk_for_each(sk, node,
-                                    &tcp_ehash[i + tcp_ehash_size].chain) {
+                                    &tcp_hashinfo.ehash[i + tcp_hashinfo.ehash_size].chain) {
                                 struct inet_sock *inet = inet_sk(sk);
 
                                 if (num < s_num)
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 40fe4f5fca1c..f5373f9f00ac 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -94,6 +94,7 @@ struct inet_hashinfo __cacheline_aligned tcp_hashinfo = {
         .lhash_users    = ATOMIC_INIT(0),
         .lhash_wait     = __WAIT_QUEUE_HEAD_INITIALIZER(tcp_hashinfo.lhash_wait),
         .portalloc_lock = SPIN_LOCK_UNLOCKED,
+        .port_rover     = 1024 - 1,
 };
 
 /*
@@ -102,7 +103,6 @@ struct inet_hashinfo __cacheline_aligned tcp_hashinfo = {
  * 32768-61000
  */
 int sysctl_local_port_range[2] = { 1024, 4999 };
-int tcp_port_rover = 1024 - 1;
 
 static inline int tcp_bind_conflict(struct sock *sk, struct inet_bind_bucket *tb)
 {
@@ -146,16 +146,16 @@ static int tcp_v4_get_port(struct sock *sk, unsigned short snum)
                 int remaining = (high - low) + 1;
                 int rover;
 
-                spin_lock(&tcp_portalloc_lock);
-                if (tcp_port_rover < low)
+                spin_lock(&tcp_hashinfo.portalloc_lock);
+                if (tcp_hashinfo.port_rover < low)
                         rover = low;
                 else
-                        rover = tcp_port_rover;
+                        rover = tcp_hashinfo.port_rover;
                 do {
                         rover++;
                         if (rover > high)
                                 rover = low;
-                        head = &tcp_bhash[inet_bhashfn(rover, tcp_bhash_size)];
+                        head = &tcp_hashinfo.bhash[inet_bhashfn(rover, tcp_hashinfo.bhash_size)];
                         spin_lock(&head->lock);
                         inet_bind_bucket_for_each(tb, node, &head->chain)
                                 if (tb->port == rover)
@@ -164,8 +164,8 @@ static int tcp_v4_get_port(struct sock *sk, unsigned short snum)
                 next:
                         spin_unlock(&head->lock);
                 } while (--remaining > 0);
-                tcp_port_rover = rover;
-                spin_unlock(&tcp_portalloc_lock);
+                tcp_hashinfo.port_rover = rover;
+                spin_unlock(&tcp_hashinfo.portalloc_lock);
 
                 /* Exhausted local port range during search?  It is not
                  * possible for us to be holding one of the bind hash
@@ -182,7 +182,7 @@ static int tcp_v4_get_port(struct sock *sk, unsigned short snum)
                  */
                 snum = rover;
         } else {
-                head = &tcp_bhash[inet_bhashfn(snum, tcp_bhash_size)];
+                head = &tcp_hashinfo.bhash[inet_bhashfn(snum, tcp_hashinfo.bhash_size)];
                 spin_lock(&head->lock);
                 inet_bind_bucket_for_each(tb, node, &head->chain)
                         if (tb->port == snum)
@@ -205,7 +205,7 @@ tb_found:
         }
 tb_not_found:
         ret = 1;
-        if (!tb && (tb = inet_bind_bucket_create(tcp_bucket_cachep, head, snum)) == NULL)
+        if (!tb && (tb = inet_bind_bucket_create(tcp_hashinfo.bind_bucket_cachep, head, snum)) == NULL)
                 goto fail_unlock;
         if (hlist_empty(&tb->owners)) {
                 if (sk->sk_reuse && sk->sk_state != TCP_LISTEN)
@@ -237,22 +237,22 @@ fail:
 
 void tcp_listen_wlock(void)
 {
-        write_lock(&tcp_lhash_lock);
+        write_lock(&tcp_hashinfo.lhash_lock);
 
-        if (atomic_read(&tcp_lhash_users)) {
+        if (atomic_read(&tcp_hashinfo.lhash_users)) {
                 DEFINE_WAIT(wait);
 
                 for (;;) {
-                        prepare_to_wait_exclusive(&tcp_lhash_wait,
+                        prepare_to_wait_exclusive(&tcp_hashinfo.lhash_wait,
                                                 &wait, TASK_UNINTERRUPTIBLE);
-                        if (!atomic_read(&tcp_lhash_users))
+                        if (!atomic_read(&tcp_hashinfo.lhash_users))
                                 break;
-                        write_unlock_bh(&tcp_lhash_lock);
+                        write_unlock_bh(&tcp_hashinfo.lhash_lock);
                         schedule();
-                        write_lock_bh(&tcp_lhash_lock);
+                        write_lock_bh(&tcp_hashinfo.lhash_lock);
                 }
 
-                finish_wait(&tcp_lhash_wait, &wait);
+                finish_wait(&tcp_hashinfo.lhash_wait, &wait);
         }
 }
 
@@ -263,20 +263,20 @@ static __inline__ void __tcp_v4_hash(struct sock *sk, const int listen_possible)
 
         BUG_TRAP(sk_unhashed(sk));
         if (listen_possible && sk->sk_state == TCP_LISTEN) {
-                list = &tcp_listening_hash[inet_sk_listen_hashfn(sk)];
-                lock = &tcp_lhash_lock;
+                list = &tcp_hashinfo.listening_hash[inet_sk_listen_hashfn(sk)];
+                lock = &tcp_hashinfo.lhash_lock;
                 tcp_listen_wlock();
         } else {
-                sk->sk_hashent = inet_sk_ehashfn(sk, tcp_ehash_size);
-                list = &tcp_ehash[sk->sk_hashent].chain;
-                lock = &tcp_ehash[sk->sk_hashent].lock;
+                sk->sk_hashent = inet_sk_ehashfn(sk, tcp_hashinfo.ehash_size);
+                list = &tcp_hashinfo.ehash[sk->sk_hashent].chain;
+                lock = &tcp_hashinfo.ehash[sk->sk_hashent].lock;
                 write_lock(lock);
         }
         __sk_add_node(sk, list);
         sock_prot_inc_use(sk->sk_prot);
         write_unlock(lock);
         if (listen_possible && sk->sk_state == TCP_LISTEN)
-                wake_up(&tcp_lhash_wait);
+                wake_up(&tcp_hashinfo.lhash_wait);
 }
 
 static void tcp_v4_hash(struct sock *sk)
@@ -298,9 +298,9 @@ void tcp_unhash(struct sock *sk)
         if (sk->sk_state == TCP_LISTEN) {
                 local_bh_disable();
                 tcp_listen_wlock();
-                lock = &tcp_lhash_lock;
+                lock = &tcp_hashinfo.lhash_lock;
         } else {
-                struct inet_ehash_bucket *head = &tcp_ehash[sk->sk_hashent];
+                struct inet_ehash_bucket *head = &tcp_hashinfo.ehash[sk->sk_hashent];
                 lock = &head->lock;
                 write_lock_bh(&head->lock);
         }
@@ -311,7 +311,7 @@ void tcp_unhash(struct sock *sk)
 
  ende:
         if (sk->sk_state == TCP_LISTEN)
-                wake_up(&tcp_lhash_wait);
+                wake_up(&tcp_hashinfo.lhash_wait);
 }
 
 /* Don't inline this cruft.  Here are some nice properties to
@@ -366,8 +366,8 @@ static inline struct sock *tcp_v4_lookup_listener(const u32 daddr,
         struct sock *sk = NULL;
         struct hlist_head *head;
 
-        read_lock(&tcp_lhash_lock);
-        head = &tcp_listening_hash[inet_lhashfn(hnum)];
+        read_lock(&tcp_hashinfo.lhash_lock);
+        head = &tcp_hashinfo.listening_hash[inet_lhashfn(hnum)];
         if (!hlist_empty(head)) {
                 struct inet_sock *inet = inet_sk((sk = __sk_head(head)));
 
@@ -382,7 +382,7 @@ static inline struct sock *tcp_v4_lookup_listener(const u32 daddr,
 sherry_cache:
                 sock_hold(sk);
         }
-        read_unlock(&tcp_lhash_lock);
+        read_unlock(&tcp_hashinfo.lhash_lock);
         return sk;
 }
 
@@ -406,8 +406,8 @@ static inline struct sock *__tcp_v4_lookup_established(const u32 saddr,
         /* Optimize here for direct hit, only listening connections can
          * have wildcards anyways.
          */
-        const int hash = inet_ehashfn(daddr, hnum, saddr, sport, tcp_ehash_size);
-        head = &tcp_ehash[hash];
+        const int hash = inet_ehashfn(daddr, hnum, saddr, sport, tcp_hashinfo.ehash_size);
+        head = &tcp_hashinfo.ehash[hash];
         read_lock(&head->lock);
         sk_for_each(sk, node, &head->chain) {
                 if (TCP_IPV4_MATCH(sk, acookie, saddr, daddr, ports, dif))
@@ -415,7 +415,7 @@ static inline struct sock *__tcp_v4_lookup_established(const u32 saddr,
         }
 
         /* Must check for a TIME_WAIT'er before going to listener hash. */
-        sk_for_each(sk, node, &(head + tcp_ehash_size)->chain) {
+        sk_for_each(sk, node, &(head + tcp_hashinfo.ehash_size)->chain) {
                 if (TCP_IPV4_TW_MATCH(sk, acookie, saddr, daddr, ports, dif))
                         goto hit;
         }
@@ -469,8 +469,8 @@ static int __tcp_v4_check_established(struct sock *sk, __u16 lport,
         int dif = sk->sk_bound_dev_if;
         TCP_V4_ADDR_COOKIE(acookie, saddr, daddr)
         __u32 ports = TCP_COMBINED_PORTS(inet->dport, lport);
-        const int hash = inet_ehashfn(daddr, lport, saddr, inet->dport, tcp_ehash_size);
-        struct inet_ehash_bucket *head = &tcp_ehash[hash];
+        const int hash = inet_ehashfn(daddr, lport, saddr, inet->dport, tcp_hashinfo.ehash_size);
+        struct inet_ehash_bucket *head = &tcp_hashinfo.ehash[hash];
         struct sock *sk2;
         struct hlist_node *node;
         struct tcp_tw_bucket *tw;
@@ -478,7 +478,7 @@ static int __tcp_v4_check_established(struct sock *sk, __u16 lport,
         write_lock(&head->lock);
 
         /* Check TIME-WAIT sockets first. */
-        sk_for_each(sk2, node, &(head + tcp_ehash_size)->chain) {
+        sk_for_each(sk2, node, &(head + tcp_hashinfo.ehash_size)->chain) {
                 tw = (struct tcp_tw_bucket *)sk2;
 
                 if (TCP_IPV4_TW_MATCH(sk2, acookie, saddr, daddr, ports, dif)) {
@@ -582,7 +582,7 @@ static inline int tcp_v4_hash_connect(struct sock *sk)
                 local_bh_disable();
                 for (i = 1; i <= range; i++) {
                         port = low + (i + offset) % range;
-                        head = &tcp_bhash[inet_bhashfn(port, tcp_bhash_size)];
+                        head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)];
                         spin_lock(&head->lock);
 
                         /* Does not bother with rcv_saddr checks,
@@ -602,7 +602,7 @@ static inline int tcp_v4_hash_connect(struct sock *sk)
                                 }
                         }
 
-                        tb = inet_bind_bucket_create(tcp_bucket_cachep, head, port);
+                        tb = inet_bind_bucket_create(tcp_hashinfo.bind_bucket_cachep, head, port);
                         if (!tb) {
                                 spin_unlock(&head->lock);
                                 break;
@@ -637,7 +637,7 @@ ok:
                 goto out;
         }
 
-        head = &tcp_bhash[inet_bhashfn(snum, tcp_bhash_size)];
+        head = &tcp_hashinfo.bhash[inet_bhashfn(snum, tcp_hashinfo.bhash_size)];
         tb  = inet_sk(sk)->bind_hash;
         spin_lock_bh(&head->lock);
         if (sk_head(&tb->owners) == sk && !sk->sk_bind_node.next) {
@@ -1926,7 +1926,7 @@ static void *listening_get_next(struct seq_file *seq, void *cur)
 
         if (!sk) {
                 st->bucket = 0;
-                sk = sk_head(&tcp_listening_hash[0]);
+                sk = sk_head(&tcp_hashinfo.listening_hash[0]);
                 goto get_sk;
         }
 
@@ -1980,7 +1980,7 @@ start_req:
                 read_unlock_bh(&tp->accept_queue.syn_wait_lock);
         }
         if (++st->bucket < INET_LHTABLE_SIZE) {
-                sk = sk_head(&tcp_listening_hash[st->bucket]);
+                sk = sk_head(&tcp_hashinfo.listening_hash[st->bucket]);
                 goto get_sk;
         }
         cur = NULL;
@@ -2004,7 +2004,7 @@ static void *established_get_first(struct seq_file *seq)
         struct tcp_iter_state* st = seq->private;
         void *rc = NULL;
 
-        for (st->bucket = 0; st->bucket < tcp_ehash_size; ++st->bucket) {
+        for (st->bucket = 0; st->bucket < tcp_hashinfo.ehash_size; ++st->bucket) {
                 struct sock *sk;
                 struct hlist_node *node;
                 struct tcp_tw_bucket *tw;
@@ -2012,8 +2012,8 @@ static void *established_get_first(struct seq_file *seq)
                 /* We can reschedule _before_ having picked the target: */
                 cond_resched_softirq();
 
-                read_lock(&tcp_ehash[st->bucket].lock);
-                sk_for_each(sk, node, &tcp_ehash[st->bucket].chain) {
+                read_lock(&tcp_hashinfo.ehash[st->bucket].lock);
+                sk_for_each(sk, node, &tcp_hashinfo.ehash[st->bucket].chain) {
                         if (sk->sk_family != st->family) {
                                 continue;
                         }
@@ -2022,14 +2022,14 @@ static void *established_get_first(struct seq_file *seq)
                 }
                 st->state = TCP_SEQ_STATE_TIME_WAIT;
                 tw_for_each(tw, node,
-                            &tcp_ehash[st->bucket + tcp_ehash_size].chain) {
+                            &tcp_hashinfo.ehash[st->bucket + tcp_hashinfo.ehash_size].chain) {
                         if (tw->tw_family != st->family) {
                                 continue;
                         }
                         rc = tw;
                         goto out;
                 }
-                read_unlock(&tcp_ehash[st->bucket].lock);
+                read_unlock(&tcp_hashinfo.ehash[st->bucket].lock);
                 st->state = TCP_SEQ_STATE_ESTABLISHED;
         }
 out:
@@ -2056,15 +2056,15 @@ get_tw:
                         cur = tw;
                         goto out;
                 }
-                read_unlock(&tcp_ehash[st->bucket].lock);
+                read_unlock(&tcp_hashinfo.ehash[st->bucket].lock);
                 st->state = TCP_SEQ_STATE_ESTABLISHED;
 
                 /* We can reschedule between buckets: */
                 cond_resched_softirq();
 
-                if (++st->bucket < tcp_ehash_size) {
-                        read_lock(&tcp_ehash[st->bucket].lock);
-                        sk = sk_head(&tcp_ehash[st->bucket].chain);
+                if (++st->bucket < tcp_hashinfo.ehash_size) {
+                        read_lock(&tcp_hashinfo.ehash[st->bucket].lock);
+                        sk = sk_head(&tcp_hashinfo.ehash[st->bucket].chain);
                 } else {
                         cur = NULL;
                         goto out;
@@ -2078,7 +2078,7 @@ get_tw:
         }
 
         st->state = TCP_SEQ_STATE_TIME_WAIT;
-        tw = tw_head(&tcp_ehash[st->bucket + tcp_ehash_size].chain);
+        tw = tw_head(&tcp_hashinfo.ehash[st->bucket + tcp_hashinfo.ehash_size].chain);
         goto get_tw;
 found:
         cur = sk;
@@ -2173,7 +2173,7 @@ static void tcp_seq_stop(struct seq_file *seq, void *v)
         case TCP_SEQ_STATE_TIME_WAIT:
         case TCP_SEQ_STATE_ESTABLISHED:
                 if (v)
-                        read_unlock(&tcp_ehash[st->bucket].lock);
+                        read_unlock(&tcp_hashinfo.ehash[st->bucket].lock);
                 local_bh_enable();
                 break;
         }
@@ -2432,7 +2432,6 @@ EXPORT_SYMBOL(ipv4_specific);
 EXPORT_SYMBOL(inet_bind_bucket_create);
 EXPORT_SYMBOL(tcp_hashinfo);
 EXPORT_SYMBOL(tcp_listen_wlock);
-EXPORT_SYMBOL(tcp_port_rover);
 EXPORT_SYMBOL(tcp_prot);
 EXPORT_SYMBOL(tcp_unhash);
 EXPORT_SYMBOL(tcp_v4_conn_request);
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 267cea1087e5..f29e2f6ebe1b 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -60,12 +60,11 @@ int tcp_tw_count;
 /* Must be called with locally disabled BHs. */
 static void tcp_timewait_kill(struct tcp_tw_bucket *tw)
 {
-        struct inet_ehash_bucket *ehead;
         struct inet_bind_hashbucket *bhead;
         struct inet_bind_bucket *tb;
-
         /* Unlink from established hashes. */
-        ehead = &tcp_ehash[tw->tw_hashent];
+        struct inet_ehash_bucket *ehead = &tcp_hashinfo.ehash[tw->tw_hashent];
+
         write_lock(&ehead->lock);
         if (hlist_unhashed(&tw->tw_node)) {
                 write_unlock(&ehead->lock);
@@ -76,12 +75,12 @@ static void tcp_timewait_kill(struct tcp_tw_bucket *tw)
         write_unlock(&ehead->lock);
 
         /* Disassociate with bind bucket. */
-        bhead = &tcp_bhash[inet_bhashfn(tw->tw_num, tcp_bhash_size)];
+        bhead = &tcp_hashinfo.bhash[inet_bhashfn(tw->tw_num, tcp_hashinfo.bhash_size)];
         spin_lock(&bhead->lock);
         tb = tw->tw_tb;
         __hlist_del(&tw->tw_bind_node);
         tw->tw_tb = NULL;
-        inet_bind_bucket_destroy(tcp_bucket_cachep, tb);
+        inet_bind_bucket_destroy(tcp_hashinfo.bind_bucket_cachep, tb);
         spin_unlock(&bhead->lock);
 
 #ifdef SOCK_REFCNT_DEBUG
@@ -297,13 +296,13 @@ kill:
 static void __tcp_tw_hashdance(struct sock *sk, struct tcp_tw_bucket *tw)
 {
         const struct inet_sock *inet = inet_sk(sk);
-        struct inet_ehash_bucket *ehead = &tcp_ehash[sk->sk_hashent];
+        struct inet_ehash_bucket *ehead = &tcp_hashinfo.ehash[sk->sk_hashent];
         struct inet_bind_hashbucket *bhead;
         /* Step 1: Put TW into bind hash. Original socket stays there too.
            Note, that any socket with inet->num != 0 MUST be bound in
            binding cache, even if it is closed.
          */
-        bhead = &tcp_bhash[inet_bhashfn(inet->num, tcp_bhash_size)];
+        bhead = &tcp_hashinfo.bhash[inet_bhashfn(inet->num, tcp_hashinfo.bhash_size)];
         spin_lock(&bhead->lock);
         tw->tw_tb = inet->bind_hash;
         BUG_TRAP(inet->bind_hash);
@@ -317,7 +316,7 @@ static void __tcp_tw_hashdance(struct sock *sk, struct tcp_tw_bucket *tw)
                 sock_prot_dec_use(sk->sk_prot);
 
         /* Step 3: Hash TW into TIMEWAIT half of established hash table. */
-        tw_add_node(tw, &(ehead + tcp_ehash_size)->chain);
+        tw_add_node(tw, &(ehead + tcp_hashinfo.ehash_size)->chain);
         atomic_inc(&tw->tw_refcnt);
 
         write_unlock(&ehead->lock);
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index bfbedb56bce2..362ef5a64062 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -84,7 +84,7 @@ static __inline__ int tcp_v6_hashfn(struct in6_addr *laddr, u16 lport,
         hashent ^= (laddr->s6_addr32[3] ^ faddr->s6_addr32[3]);
         hashent ^= hashent>>16;
         hashent ^= hashent>>8;
-        return (hashent & (tcp_ehash_size - 1));
+        return (hashent & (tcp_hashinfo.ehash_size - 1));
 }
 
 static __inline__ int tcp_v6_sk_hashfn(struct sock *sk)
@@ -138,15 +138,15 @@ static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
                 int remaining = (high - low) + 1;
                 int rover;
 
-                spin_lock(&tcp_portalloc_lock);
-                if (tcp_port_rover < low)
+                spin_lock(&tcp_hashinfo.portalloc_lock);
+                if (tcp_hashinfo.port_rover < low)
                         rover = low;
                 else
-                        rover = tcp_port_rover;
+                        rover = tcp_hashinfo.port_rover;
                 do {    rover++;
                         if (rover > high)
                                 rover = low;
-                        head = &tcp_bhash[inet_bhashfn(rover, tcp_bhash_size)];
+                        head = &tcp_hashinfo.bhash[inet_bhashfn(rover, tcp_hashinfo.bhash_size)];
                         spin_lock(&head->lock);
                         inet_bind_bucket_for_each(tb, node, &head->chain)
                                 if (tb->port == rover)
@@ -155,8 +155,8 @@ static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
                 next:
                         spin_unlock(&head->lock);
                 } while (--remaining > 0);
-                tcp_port_rover = rover;
-                spin_unlock(&tcp_portalloc_lock);
+                tcp_hashinfo.port_rover = rover;
+                spin_unlock(&tcp_hashinfo.portalloc_lock);
 
                 /* Exhausted local port range during search?  It is not
                  * possible for us to be holding one of the bind hash
@@ -171,7 +171,7 @@ static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
                 /* OK, here is the one we will use. */
                 snum = rover;
         } else {
-                head = &tcp_bhash[inet_bhashfn(snum, tcp_bhash_size)];
+                head = &tcp_hashinfo.bhash[inet_bhashfn(snum, tcp_hashinfo.bhash_size)];
                 spin_lock(&head->lock);
                 inet_bind_bucket_for_each(tb, node, &head->chain)
                         if (tb->port == snum)
@@ -192,8 +192,11 @@ tb_found:
         }
 tb_not_found:
         ret = 1;
-        if (!tb && (tb = inet_bind_bucket_create(tcp_bucket_cachep, head, snum)) == NULL)
-                goto fail_unlock;
+        if (tb == NULL) {
+                tb = inet_bind_bucket_create(tcp_hashinfo.bind_bucket_cachep, head, snum);
+                if (tb == NULL)
+                        goto fail_unlock;
+        }
         if (hlist_empty(&tb->owners)) {
                 if (sk->sk_reuse && sk->sk_state != TCP_LISTEN)
                         tb->fastreuse = 1;
@@ -224,13 +227,13 @@ static __inline__ void __tcp_v6_hash(struct sock *sk)
         BUG_TRAP(sk_unhashed(sk));
 
         if (sk->sk_state == TCP_LISTEN) {
-                list = &tcp_listening_hash[inet_sk_listen_hashfn(sk)];
-                lock = &tcp_lhash_lock;
+                list = &tcp_hashinfo.listening_hash[inet_sk_listen_hashfn(sk)];
+                lock = &tcp_hashinfo.lhash_lock;
                 tcp_listen_wlock();
         } else {
                 sk->sk_hashent = tcp_v6_sk_hashfn(sk);
-                list = &tcp_ehash[sk->sk_hashent].chain;
-                lock = &tcp_ehash[sk->sk_hashent].lock;
+                list = &tcp_hashinfo.ehash[sk->sk_hashent].chain;
+                lock = &tcp_hashinfo.ehash[sk->sk_hashent].lock;
                 write_lock(lock);
         }
 
@@ -263,8 +266,8 @@ static struct sock *tcp_v6_lookup_listener(struct in6_addr *daddr, unsigned shor
         int score, hiscore;
 
         hiscore=0;
-        read_lock(&tcp_lhash_lock);
-        sk_for_each(sk, node, &tcp_listening_hash[inet_lhashfn(hnum)]) {
+        read_lock(&tcp_hashinfo.lhash_lock);
+        sk_for_each(sk, node, &tcp_hashinfo.listening_hash[inet_lhashfn(hnum)]) {
                 if (inet_sk(sk)->num == hnum && sk->sk_family == PF_INET6) {
                         struct ipv6_pinfo *np = inet6_sk(sk);
                         
@@ -291,7 +294,7 @@ static struct sock *tcp_v6_lookup_listener(struct in6_addr *daddr, unsigned shor
         }
         if (result)
                 sock_hold(result);
-        read_unlock(&tcp_lhash_lock);
+        read_unlock(&tcp_hashinfo.lhash_lock);
         return result;
 }
 
@@ -315,7 +318,7 @@ static inline struct sock *__tcp_v6_lookup_established(struct in6_addr *saddr, u
          * have wildcards anyways.
          */
         hash = tcp_v6_hashfn(daddr, hnum, saddr, sport);
-        head = &tcp_ehash[hash];
+        head = &tcp_hashinfo.ehash[hash];
         read_lock(&head->lock);
         sk_for_each(sk, node, &head->chain) {
                 /* For IPV6 do the cheaper port and family tests first. */
@@ -323,7 +326,7 @@ static inline struct sock *__tcp_v6_lookup_established(struct in6_addr *saddr, u
                         goto hit; /* You sunk my battleship! */
         }
         /* Must check for a TIME_WAIT'er before going to listener hash. */
-        sk_for_each(sk, node, &(head + tcp_ehash_size)->chain) {
+        sk_for_each(sk, node, &(head + tcp_hashinfo.ehash_size)->chain) {
                 /* FIXME: acme: check this... */
                 struct tcp_tw_bucket *tw = (struct tcp_tw_bucket *)sk;
 
@@ -461,7 +464,7 @@ static int __tcp_v6_check_established(struct sock *sk, __u16 lport,
         int dif = sk->sk_bound_dev_if;
         u32 ports = TCP_COMBINED_PORTS(inet->dport, lport);
         int hash = tcp_v6_hashfn(daddr, inet->num, saddr, inet->dport);
-        struct inet_ehash_bucket *head = &tcp_ehash[hash];
+        struct inet_ehash_bucket *head = &tcp_hashinfo.ehash[hash];
         struct sock *sk2;
         struct hlist_node *node;
         struct tcp_tw_bucket *tw;
@@ -469,7 +472,7 @@ static int __tcp_v6_check_established(struct sock *sk, __u16 lport,
         write_lock(&head->lock);
 
         /* Check TIME-WAIT sockets first. */
-        sk_for_each(sk2, node, &(head + tcp_ehash_size)->chain) {
+        sk_for_each(sk2, node, &(head + tcp_hashinfo.ehash_size)->chain) {
                 tw = (struct tcp_tw_bucket*)sk2;
 
                 if(*((__u32 *)&(tw->tw_dport))  == ports        &&
@@ -558,7 +561,7 @@ static int tcp_v6_hash_connect(struct sock *sk)
                 local_bh_disable();
                 for (i = 1; i <= range; i++) {
                         port = low + (i + offset) % range;
-                        head = &tcp_bhash[inet_bhashfn(port, tcp_bhash_size)];
+                        head = &tcp_hashinfo.bhash[inet_bhashfn(port, tcp_hashinfo.bhash_size)];
                         spin_lock(&head->lock);
 
                         /* Does not bother with rcv_saddr checks,
@@ -578,7 +581,7 @@ static int tcp_v6_hash_connect(struct sock *sk)
                                 }
                         }
 
-                        tb = inet_bind_bucket_create(tcp_bucket_cachep, head, port);
+                        tb = inet_bind_bucket_create(tcp_hashinfo.bind_bucket_cachep, head, port);
                         if (!tb) {
                                 spin_unlock(&head->lock);
                                 break;
@@ -613,7 +616,7 @@ ok:
                 goto out;
         }
 
-        head = &tcp_bhash[inet_bhashfn(snum, tcp_bhash_size)];
+        head = &tcp_hashinfo.bhash[inet_bhashfn(snum, tcp_hashinfo.bhash_size)];
         tb   = inet_sk(sk)->bind_hash;
         spin_lock_bh(&head->lock);