diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_conntrack_core.c | 22 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 6 | ||||
| -rw-r--r-- | net/netfilter/xt_connlimit.c | 2 |
3 files changed, 19 insertions, 11 deletions
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index f284dddfc89..ce4c4ba31cb 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -246,16 +246,14 @@ static void death_by_timeout(unsigned long ul_conntrack) } struct nf_conntrack_tuple_hash * -__nf_conntrack_find(const struct nf_conntrack_tuple *tuple, - const struct nf_conn *ignored_conntrack) +__nf_conntrack_find(const struct nf_conntrack_tuple *tuple) { struct nf_conntrack_tuple_hash *h; struct hlist_node *n; unsigned int hash = hash_conntrack(tuple); hlist_for_each_entry_rcu(h, n, &nf_conntrack_hash[hash], hnode) { - if (nf_ct_tuplehash_to_ctrack(h) != ignored_conntrack && - nf_ct_tuple_equal(tuple, &h->tuple)) { + if (nf_ct_tuple_equal(tuple, &h->tuple)) { NF_CT_STAT_INC(found); return h; } @@ -274,7 +272,7 @@ nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple) struct nf_conn *ct; rcu_read_lock(); - h = __nf_conntrack_find(tuple, NULL); + h = __nf_conntrack_find(tuple); if (h) { ct = nf_ct_tuplehash_to_ctrack(h); if (unlikely(!atomic_inc_not_zero(&ct->ct_general.use))) @@ -395,12 +393,22 @@ nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple, const struct nf_conn *ignored_conntrack) { struct nf_conntrack_tuple_hash *h; + struct hlist_node *n; + unsigned int hash = hash_conntrack(tuple); rcu_read_lock(); - h = __nf_conntrack_find(tuple, ignored_conntrack); + hlist_for_each_entry_rcu(h, n, &nf_conntrack_hash[hash], hnode) { + if (nf_ct_tuplehash_to_ctrack(h) != ignored_conntrack && + nf_ct_tuple_equal(tuple, &h->tuple)) { + NF_CT_STAT_INC(found); + rcu_read_unlock(); + return 1; + } + NF_CT_STAT_INC(searched); + } rcu_read_unlock(); - return h != NULL; + return 0; } EXPORT_SYMBOL_GPL(nf_conntrack_tuple_taken); diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index b6a8c089a07..bf86fdd89fd 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -1222,9 +1222,9 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb, spin_lock_bh(&nf_conntrack_lock); if (cda[CTA_TUPLE_ORIG]) - h = __nf_conntrack_find(&otuple, NULL); + h = __nf_conntrack_find(&otuple); else if (cda[CTA_TUPLE_REPLY]) - h = __nf_conntrack_find(&rtuple, NULL); + h = __nf_conntrack_find(&rtuple); if (h == NULL) { struct nf_conntrack_tuple master; @@ -1239,7 +1239,7 @@ ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb, if (err < 0) goto out_unlock; - master_h = __nf_conntrack_find(&master, NULL); + master_h = __nf_conntrack_find(&master); if (master_h == NULL) { err = -ENOENT; goto out_unlock; diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c index f9b59a6753e..3b0111933f6 100644 --- a/net/netfilter/xt_connlimit.c +++ b/net/netfilter/xt_connlimit.c @@ -124,7 +124,7 @@ static int count_them(struct xt_connlimit_data *data, /* check the saved connections */ list_for_each_entry_safe(conn, tmp, hash, list) { - found = __nf_conntrack_find(&conn->tuple, NULL); + found = __nf_conntrack_find(&conn->tuple); found_ct = NULL; if (found != NULL) |