[PATCH / RFC] kni: Add set_rx_mode callback to handle multicast groups

[Simon Kagstrom <simon.kagstrom-vI6UBbBVNY+JA8cjQkG2/g@public.gmane.org>]

This is needed to add / remove interfaces in multicast groups via the
ip tool.

The callback does nothing - the same as the kernel tun.c.

Signed-off-by: Simon Kagstrom <simon.kagstrom-vI6UBbBVNY+JA8cjQkG2/g@public.gmane.org>
---
Marked RFC since I'm by no means an expert on this. We noticed this
when playing with KNI and IGMP handling.

 lib/librte_eal/linuxapp/kni/kni_net.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/librte_eal/linuxapp/kni/kni_net.c
b/lib/librte_eal/linuxapp/kni/kni_net.c index dd95db5..cf93c4b 100644
--- a/lib/librte_eal/linuxapp/kni/kni_net.c
+++ b/lib/librte_eal/linuxapp/kni/kni_net.c
@@ -495,6 +495,11 @@ kni_net_ioctl(struct net_device *dev, struct ifreq
*rq, int cmd) return 0;
 }
 
+static void
+kni_net_set_rx_mode(struct net_device *dev)
+{
+}
+
 static int
 kni_net_change_mtu(struct net_device *dev, int new_mtu)
 {
@@ -645,6 +650,7 @@ static const struct net_device_ops
kni_net_netdev_ops = { .ndo_start_xmit = kni_net_tx,
 	.ndo_change_mtu = kni_net_change_mtu,
 	.ndo_do_ioctl = kni_net_ioctl,
+	.ndo_set_rx_mode = kni_net_set_rx_mode,
 	.ndo_get_stats = kni_net_stats,
 	.ndo_tx_timeout = kni_net_tx_timeout,
 	.ndo_set_mac_address = kni_net_set_mac,
-- 
1.9.1