[INET]: Just rename the TCP hashtable functions/structs to inet_

This is to break down the complexity of the series of patches,
making it very clear that this one just does:

1. renames tcp_ prefixed hashtable functions and data structures that
   were already mostly generic to inet_ to share it with DCCP and
   other INET transport protocols.

2. Removes not used functions (__tb_head & tb_head)

3. Removes some leftover prototypes in the headers (tcp_bucket_unlock &
   tcp_v4_build_header)

Next changesets will move tcp_sk(sk)->bind_hash to inet_sock so that we can
make functions such as tcp_inherit_port, __tcp_inherit_port, tcp_v4_get_port,
__tcp_put_port,  generic and get others like tcp_destroy_sock closer to generic
(tcp_orphan_count will go to sk->sk_prot to allow this).

Eventually most of these functions will be used passing the transport protocol
inet_hashinfo structure.

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

1 files changed, 21 insertions, 21 deletions

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 4e32a8496be3..31f50fb29ffb 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -98,11 +98,11 @@ static __inline__ int tcp_v6_sk_hashfn(struct sock *sk)
         return tcp_v6_hashfn(laddr, lport, faddr, fport);
 }
 
-static inline int tcp_v6_bind_conflict(struct sock *sk,
-                                       struct tcp_bind_bucket *tb)
+static inline int tcp_v6_bind_conflict(const struct sock *sk,
+                                       const struct inet_bind_bucket *tb)
 {
-        struct sock *sk2;
-        struct hlist_node *node;
+        const struct sock *sk2;
+        const struct hlist_node *node;
 
         /* We must walk the whole port owner list in this case. -DaveM */
         sk_for_each_bound(sk2, node, &tb->owners) {
@@ -126,8 +126,8 @@ static inline int tcp_v6_bind_conflict(struct sock *sk,
  */
 static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
 {
-        struct tcp_bind_hashbucket *head;
-        struct tcp_bind_bucket *tb;
+        struct inet_bind_hashbucket *head;
+        struct inet_bind_bucket *tb;
         struct hlist_node *node;
         int ret;
 
@@ -146,9 +146,9 @@ static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
                 do {    rover++;
                         if (rover > high)
                                 rover = low;
-                        head = &tcp_bhash[tcp_bhashfn(rover)];
+                        head = &tcp_bhash[inet_bhashfn(rover, tcp_bhash_size)];
                         spin_lock(&head->lock);
-                        tb_for_each(tb, node, &head->chain)
+                        inet_bind_bucket_for_each(tb, node, &head->chain)
                                 if (tb->port == rover)
                                         goto next;
                         break;
@@ -171,9 +171,9 @@ 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[tcp_bhashfn(snum)];
+                head = &tcp_bhash[inet_bhashfn(snum, tcp_bhash_size)];
                 spin_lock(&head->lock);
-                tb_for_each(tb, node, &head->chain)
+                inet_bind_bucket_for_each(tb, node, &head->chain)
                         if (tb->port == snum)
                                 goto tb_found;
         }
@@ -192,7 +192,7 @@ tb_found:
         }
 tb_not_found:
         ret = 1;
-        if (!tb && (tb = tcp_bucket_create(head, snum)) == NULL)
+        if (!tb && (tb = inet_bind_bucket_create(tcp_bucket_cachep, head, snum)) == NULL)
                 goto fail_unlock;
         if (hlist_empty(&tb->owners)) {
                 if (sk->sk_reuse && sk->sk_state != TCP_LISTEN)
@@ -224,7 +224,7 @@ static __inline__ void __tcp_v6_hash(struct sock *sk)
         BUG_TRAP(sk_unhashed(sk));
 
         if (sk->sk_state == TCP_LISTEN) {
-                list = &tcp_listening_hash[tcp_sk_listen_hashfn(sk)];
+                list = &tcp_listening_hash[inet_sk_listen_hashfn(sk)];
                 lock = &tcp_lhash_lock;
                 tcp_listen_wlock();
         } else {
@@ -264,7 +264,7 @@ static struct sock *tcp_v6_lookup_listener(struct in6_addr *daddr, unsigned shor
 
         hiscore=0;
         read_lock(&tcp_lhash_lock);
-        sk_for_each(sk, node, &tcp_listening_hash[tcp_lhashfn(hnum)]) {
+        sk_for_each(sk, node, &tcp_listening_hash[inet_lhashfn(hnum)]) {
                 if (inet_sk(sk)->num == hnum && sk->sk_family == PF_INET6) {
                         struct ipv6_pinfo *np = inet6_sk(sk);
                         
@@ -305,7 +305,7 @@ static inline struct sock *__tcp_v6_lookup_established(struct in6_addr *saddr, u
                                                        struct in6_addr *daddr, u16 hnum,
                                                        int dif)
 {
-        struct tcp_ehash_bucket *head;
+        struct inet_ehash_bucket *head;
         struct sock *sk;
         struct hlist_node *node;
         __u32 ports = TCP_COMBINED_PORTS(sport, hnum);
@@ -461,7 +461,7 @@ 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 tcp_ehash_bucket *head = &tcp_ehash[hash];
+        struct inet_ehash_bucket *head = &tcp_ehash[hash];
         struct sock *sk2;
         struct hlist_node *node;
         struct tcp_tw_bucket *tw;
@@ -540,8 +540,8 @@ static inline u32 tcpv6_port_offset(const struct sock *sk)
 static int tcp_v6_hash_connect(struct sock *sk)
 {
         unsigned short snum = inet_sk(sk)->num;
-        struct tcp_bind_hashbucket *head;
-        struct tcp_bind_bucket *tb;
+        struct inet_bind_hashbucket *head;
+        struct inet_bind_bucket *tb;
         int ret;
 
         if (!snum) {
@@ -558,14 +558,14 @@ 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[tcp_bhashfn(port)];
+                        head = &tcp_bhash[inet_bhashfn(port, tcp_bhash_size)];
                         spin_lock(&head->lock);
 
                         /* Does not bother with rcv_saddr checks,
                          * because the established check is already
                          * unique enough.
                          */
-                        tb_for_each(tb, node, &head->chain) {
+                        inet_bind_bucket_for_each(tb, node, &head->chain) {
                                 if (tb->port == port) {
                                         BUG_TRAP(!hlist_empty(&tb->owners));
                                         if (tb->fastreuse >= 0)
@@ -578,7 +578,7 @@ static int tcp_v6_hash_connect(struct sock *sk)
                                 }
                         }
 
-                        tb = tcp_bucket_create(head, port);
+                        tb = inet_bind_bucket_create(tcp_bucket_cachep, head, port);
                         if (!tb) {
                                 spin_unlock(&head->lock);
                                 break;
@@ -613,7 +613,7 @@ ok:
                 goto out;
         }
 
-        head  = &tcp_bhash[tcp_bhashfn(snum)];
+        head  = &tcp_bhash[inet_bhashfn(snum, tcp_bhash_size)];
         tb  = tcp_sk(sk)->bind_hash;
         spin_lock_bh(&head->lock);