kni: fix ioctl in container

In containers like docker, current->pid returns current process's global
PID instead of its own PID under containers's PID namespace, and
get_net_ns_by_pid() suppose to accept a virtual PID under its own
namespace, so we should use task_pid_vnr(current) to get current process's
virtual PID instead of current->pid.

Signed-off-by: Wenfeng Liu <liuwf@arraynetworks.com.cn>
Acked-by: Helin Zhang <helin.zhang@intel.com>

diff --git a/lib/librte_eal/linuxapp/kni/kni_misc.c b/lib/librte_eal/linuxapp/kni/kni_misc.c
index 912a8f1..2e9fa89 100644 (file)
--- a/lib/librte_eal/linuxapp/kni/kni_misc.c
+++ b/lib/librte_eal/linuxapp/kni/kni_misc.c
@@ -358,7 +358,7 @@ kni_ioctl_create(unsigned int ioctl_num, unsigned long ioctl_param)
                return -EBUSY;
        }
 
-       net = get_net_ns_by_pid(current->pid);
+       net = get_net_ns_by_pid(task_pid_vnr(current));
        if (IS_ERR(net)) {
                free_netdev(net_dev);
                return PTR_ERR(net);