> -----Original Message-----
> From: Wenfeng Liu [mailto:liuwf at arraynetworks.com.cn]
> Sent: Monday, June 15, 2015 12:08 PM
> To: Zhang, Helin; dev at dpdk.org
> Subject: [PATCH] kni: Passing task_pid_vnr(current) to get_net_ns_by_pid() in
> kni_ioctl_create()
>
> 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 at arraynetworks.com.cn>
> ---
> lib/librte_eal/linuxapp/kni/kni_misc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/librte_eal/linuxapp/kni/kni_misc.c
> b/lib/librte_eal/linuxapp/kni/kni_misc.c
> index 1935d32..18fb677 100644
> --- a/lib/librte_eal/linuxapp/kni/kni_misc.c
> +++ b/lib/librte_eal/linuxapp/kni/kni_misc.c
> @@ -359,7 +359,7 @@ 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));
Have you tried it on a very old kernel versions? E.g. 2.6.33
Helin
> if (IS_ERR(net)) {
> free_netdev(net_dev);
> return PTR_ERR(net);
> --
> 1.8.3.1
