Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb

[linux-2.6-omap-h63xx.git] / net / netfilter / nf_conntrack_proto_gre.c

diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index 654a4f7f12c6f7f74c1412ad432c95661336fcdb..9bd03967fea4b4c66654e5ad1c8f32779a8bc9c2 100644 (file)
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -45,12 +45,12 @@ static LIST_HEAD(gre_keymap_list);
 
 void nf_ct_gre_keymap_flush(void)
 {
-       struct list_head *pos, *n;
+       struct nf_ct_gre_keymap *km, *tmp;
 
        write_lock_bh(&nf_ct_gre_lock);
-       list_for_each_safe(pos, n, &gre_keymap_list) {
-               list_del(pos);
-               kfree(pos);
+       list_for_each_entry_safe(km, tmp, &gre_keymap_list, list) {
+               list_del(&km->list);
+               kfree(km);
        }
        write_unlock_bh(&nf_ct_gre_lock);
 }
@@ -97,10 +97,14 @@ int nf_ct_gre_keymap_add(struct nf_conn *ct, enum ip_conntrack_dir dir,
        kmp = &help->help.ct_pptp_info.keymap[dir];
        if (*kmp) {
                /* check whether it's a retransmission */
+               read_lock_bh(&nf_ct_gre_lock);
                list_for_each_entry(km, &gre_keymap_list, list) {
-                       if (gre_key_cmpfn(km, t) && km == *kmp)
+                       if (gre_key_cmpfn(km, t) && km == *kmp) {
+                               read_unlock_bh(&nf_ct_gre_lock);
                                return 0;
+                       }
                }
+               read_unlock_bh(&nf_ct_gre_lock);
                pr_debug("trying to override keymap_%s for ct %p\n",
                         dir == IP_CT_DIR_REPLY ? "reply" : "orig", ct);
                return -EEXIST;