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-rw-r--r--include/net/inet_hashtables.h5
-rw-r--r--net/ipv4/inet_hashtables.c32
-rw-r--r--net/ipv6/inet6_hashtables.c93
3 files changed, 28 insertions, 102 deletions
diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h
index 761bdc01425d..a34a8f25fc57 100644
--- a/include/net/inet_hashtables.h
+++ b/include/net/inet_hashtables.h
@@ -413,6 +413,11 @@ static inline struct sock *inet_lookup(struct inet_hashinfo *hashinfo,
return sk;
}
+extern int __inet_hash_connect(struct inet_timewait_death_row *death_row,
+ struct sock *sk,
+ int (*check_established)(struct inet_timewait_death_row *,
+ struct sock *, __u16, struct inet_timewait_sock **),
+ void (*hash)(struct inet_hashinfo *, struct sock *));
extern int inet_hash_connect(struct inet_timewait_death_row *death_row,
struct sock *sk);
#endif /* _INET_HASHTABLES_H */
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 619c63c6948a..b93d40ff6ef4 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -348,11 +348,11 @@ void __inet_hash(struct inet_hashinfo *hashinfo, struct sock *sk)
}
EXPORT_SYMBOL_GPL(__inet_hash);
-/*
- * Bind a port for a connect operation and hash it.
- */
-int inet_hash_connect(struct inet_timewait_death_row *death_row,
- struct sock *sk)
+int __inet_hash_connect(struct inet_timewait_death_row *death_row,
+ struct sock *sk,
+ int (*check_established)(struct inet_timewait_death_row *,
+ struct sock *, __u16, struct inet_timewait_sock **),
+ void (*hash)(struct inet_hashinfo *, struct sock *))
{
struct inet_hashinfo *hinfo = death_row->hashinfo;
const unsigned short snum = inet_sk(sk)->num;
@@ -385,9 +385,8 @@ int inet_hash_connect(struct inet_timewait_death_row *death_row,
BUG_TRAP(!hlist_empty(&tb->owners));
if (tb->fastreuse >= 0)
goto next_port;
- if (!__inet_check_established(death_row,
- sk, port,
- &tw))
+ if (!check_established(death_row, sk,
+ port, &tw))
goto ok;
goto next_port;
}
@@ -415,7 +414,7 @@ ok:
inet_bind_hash(sk, tb, port);
if (sk_unhashed(sk)) {
inet_sk(sk)->sport = htons(port);
- __inet_hash_nolisten(hinfo, sk);
+ hash(hinfo, sk);
}
spin_unlock(&head->lock);
@@ -432,17 +431,28 @@ ok:
tb = inet_csk(sk)->icsk_bind_hash;
spin_lock_bh(&head->lock);
if (sk_head(&tb->owners) == sk && !sk->sk_bind_node.next) {
- __inet_hash_nolisten(hinfo, sk);
+ hash(hinfo, sk);
spin_unlock_bh(&head->lock);
return 0;
} else {
spin_unlock(&head->lock);
/* No definite answer... Walk to established hash table */
- ret = __inet_check_established(death_row, sk, snum, NULL);
+ ret = check_established(death_row, sk, snum, NULL);
out:
local_bh_enable();
return ret;
}
}
+EXPORT_SYMBOL_GPL(__inet_hash_connect);
+
+/*
+ * Bind a port for a connect operation and hash it.
+ */
+int inet_hash_connect(struct inet_timewait_death_row *death_row,
+ struct sock *sk)
+{
+ return __inet_hash_connect(death_row, sk,
+ __inet_check_established, __inet_hash_nolisten);
+}
EXPORT_SYMBOL_GPL(inet_hash_connect);
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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 12:48:20 +0100