IPVS: bug in ip_vs_ftp, same list heaad used in all netns.
When ip_vs was adapted to netns the ftp application was not adapted
in a correct way.
However this is a fix to avoid kernel errors. In the long term another solution
might be chosen. I.e the ports that the ftp appl, uses should be per netns.
Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 4fff432..481f856 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -797,7 +797,8 @@
struct list_head rs_table[IP_VS_RTAB_SIZE];
/* ip_vs_app */
struct list_head app_list;
-
+ /* ip_vs_ftp */
+ struct ip_vs_app *ftp_app;
/* ip_vs_proto */
#define IP_VS_PROTO_TAB_SIZE 32 /* must be power of 2 */
struct ip_vs_proto_data *proto_data_table[IP_VS_PROTO_TAB_SIZE];
diff --git a/net/netfilter/ipvs/ip_vs_ftp.c b/net/netfilter/ipvs/ip_vs_ftp.c
index 6b5dd6d..af63553 100644
--- a/net/netfilter/ipvs/ip_vs_ftp.c
+++ b/net/netfilter/ipvs/ip_vs_ftp.c
@@ -411,25 +411,35 @@
static int __net_init __ip_vs_ftp_init(struct net *net)
{
int i, ret;
- struct ip_vs_app *app = &ip_vs_ftp;
+ struct ip_vs_app *app;
+ struct netns_ipvs *ipvs = net_ipvs(net);
+
+ app = kmemdup(&ip_vs_ftp, sizeof(struct ip_vs_app), GFP_KERNEL);
+ if (!app)
+ return -ENOMEM;
+ INIT_LIST_HEAD(&app->a_list);
+ INIT_LIST_HEAD(&app->incs_list);
+ ipvs->ftp_app = app;
ret = register_ip_vs_app(net, app);
if (ret)
- return ret;
+ goto err_exit;
for (i=0; i<IP_VS_APP_MAX_PORTS; i++) {
if (!ports[i])
continue;
ret = register_ip_vs_app_inc(net, app, app->protocol, ports[i]);
if (ret)
- break;
+ goto err_unreg;
pr_info("%s: loaded support on port[%d] = %d\n",
app->name, i, ports[i]);
}
+ return 0;
- if (ret)
- unregister_ip_vs_app(net, app);
-
+err_unreg:
+ unregister_ip_vs_app(net, app);
+err_exit:
+ kfree(ipvs->ftp_app);
return ret;
}
/*
@@ -437,9 +447,10 @@
*/
static void __ip_vs_ftp_exit(struct net *net)
{
- struct ip_vs_app *app = &ip_vs_ftp;
+ struct netns_ipvs *ipvs = net_ipvs(net);
- unregister_ip_vs_app(net, app);
+ unregister_ip_vs_app(net, ipvs->ftp_app);
+ kfree(ipvs->ftp_app);
}
static struct pernet_operations ip_vs_ftp_ops = {