diff options
| -rw-r--r-- | include/net/netfilter/nf_conntrack_helper.h | 2 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_helper.c | 8 | ||||
| -rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 23 |
3 files changed, 17 insertions, 16 deletions
diff --git a/include/net/netfilter/nf_conntrack_helper.h b/include/net/netfilter/nf_conntrack_helper.h index d015de92e03..86be7c4816d 100644 --- a/include/net/netfilter/nf_conntrack_helper.h +++ b/include/net/netfilter/nf_conntrack_helper.h @@ -40,7 +40,7 @@ struct nf_conntrack_helper { }; extern struct nf_conntrack_helper * -__nf_conntrack_helper_find_byname(const char *name); +__nf_conntrack_helper_find(const char *name, u16 l3num, u8 protonum); extern int nf_conntrack_helper_register(struct nf_conntrack_helper *); extern void nf_conntrack_helper_unregister(struct nf_conntrack_helper *); diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c index 65c2a7bc3af..c0e461f466a 100644 --- a/net/netfilter/nf_conntrack_helper.c +++ b/net/netfilter/nf_conntrack_helper.c @@ -65,7 +65,7 @@ __nf_ct_helper_find(const struct nf_conntrack_tuple *tuple) } struct nf_conntrack_helper * -__nf_conntrack_helper_find_byname(const char *name) +__nf_conntrack_helper_find(const char *name, u16 l3num, u8 protonum) { struct nf_conntrack_helper *h; struct hlist_node *n; @@ -73,13 +73,15 @@ __nf_conntrack_helper_find_byname(const char *name) for (i = 0; i < nf_ct_helper_hsize; i++) { hlist_for_each_entry_rcu(h, n, &nf_ct_helper_hash[i], hnode) { - if (!strcmp(h->name, name)) + if (!strcmp(h->name, name) && + h->tuple.src.l3num == l3num && + h->tuple.dst.protonum == protonum) return h; } } return NULL; } -EXPORT_SYMBOL_GPL(__nf_conntrack_helper_find_byname); +EXPORT_SYMBOL_GPL(__nf_conntrack_helper_find); struct nf_conn_help *nf_ct_helper_ext_add(struct nf_conn *ct, gfp_t gfp) { diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 79478dfba27..16f86d61e5d 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -1001,7 +1001,8 @@ ctnetlink_change_helper(struct nf_conn *ct, const struct nlattr * const cda[]) return 0; } - helper = __nf_conntrack_helper_find_byname(helpname); + helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), + nf_ct_protonum(ct)); if (helper == NULL) { #ifdef CONFIG_MODULES spin_unlock_bh(&nf_conntrack_lock); @@ -1012,7 +1013,8 @@ ctnetlink_change_helper(struct nf_conn *ct, const struct nlattr * const cda[]) } spin_lock_bh(&nf_conntrack_lock); - helper = __nf_conntrack_helper_find_byname(helpname); + helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), + nf_ct_protonum(ct)); if (helper) return -EAGAIN; #endif @@ -1211,7 +1213,8 @@ ctnetlink_create_conntrack(struct net *net, if (err < 0) goto err2; - helper = __nf_conntrack_helper_find_byname(helpname); + helper = __nf_conntrack_helper_find(helpname, nf_ct_l3num(ct), + nf_ct_protonum(ct)); if (helper == NULL) { rcu_read_unlock(); #ifdef CONFIG_MODULES @@ -1221,7 +1224,9 @@ ctnetlink_create_conntrack(struct net *net, } rcu_read_lock(); - helper = __nf_conntrack_helper_find_byname(helpname); + helper = __nf_conntrack_helper_find(helpname, + nf_ct_l3num(ct), + nf_ct_protonum(ct)); if (helper) { err = -EAGAIN; goto err2; @@ -1714,7 +1719,6 @@ ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb, struct net *net = sock_net(ctnl); struct nf_conntrack_expect *exp; struct nf_conntrack_tuple tuple; - struct nf_conntrack_helper *h; struct nfgenmsg *nfmsg = nlmsg_data(nlh); struct hlist_node *n, *next; u_int8_t u3 = nfmsg->nfgen_family; @@ -1751,18 +1755,13 @@ ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb, /* delete all expectations for this helper */ spin_lock_bh(&nf_conntrack_lock); - h = __nf_conntrack_helper_find_byname(name); - if (!h) { - spin_unlock_bh(&nf_conntrack_lock); - return -EOPNOTSUPP; - } for (i = 0; i < nf_ct_expect_hsize; i++) { hlist_for_each_entry_safe(exp, n, next, &net->ct.expect_hash[i], hnode) { m_help = nfct_help(exp->master); - if (m_help->helper == h - && del_timer(&exp->timeout)) { + if (!strcmp(m_help->helper->name, name) && + del_timer(&exp->timeout)) { nf_ct_unlink_expect(exp); nf_ct_expect_put(exp); } |