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kni: create interface in current network namespace

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With this patch, KNI interface (e.g. vEth0) is created in the
network namespace where the DPDK application is running.
Otherwise, all interfaces are created in the default namespace
in the host.

put_net() is required, since get_net_ns_by_pid() increments
the reference counter of the network namespace with get_net().

Signed-off-by: Takayuki Usui <takayuki@midokura.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
This commit is contained in:
Takayuki Usui 2014-12-03 10:37:26 +09:00 committed by Thomas Monjalon
parent 2f423f6385
commit 999284fcc3
1 changed files with 9 additions and 0 deletions
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9
lib/librte_eal/linuxapp/kni/kni_misc.c
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@ -311,6 +311,7 @@ kni_ioctl_create(unsigned int ioctl_num, unsigned long ioctl_param)
struct net_device *net_dev = NULL;
struct net_device *lad_dev = NULL;
struct kni_dev *kni, *dev, *n;
struct net *net;
printk(KERN_INFO "KNI: Creating kni...\n");
/* Check the buffer size, to avoid warning */
@ -354,6 +355,14 @@ kni_ioctl_create(unsigned int ioctl_num, unsigned long ioctl_param)
return -EBUSY;
}
net = get_net_ns_by_pid(current->pid);
if (IS_ERR(net)) {
free_netdev(net_dev);
return PTR_ERR(net);
}
dev_net_set(net_dev, net);
put_net(net);
kni = netdev_priv(net_dev);
kni->net_dev = net_dev;