We did some (very basic) tests with IGMP, which involves adding multicast addresses to ETH interfaces. This is done via the ip tool, an example can be found on e.g.,
http://superuser.com/questions/324824/linux-built-in-or-open-source-program-to-join-multicast-group and this will fail on KNI interfaces because of an unimplemented ioctl SIOCADDMULTI. The patch simply adds an empty callback for set_rx_mode (typically used for setting up hardware) so that the ioctl succeeds. This is the same thing as the Linux tap interface does. Signed-off-by: Simon Kagstrom <simon.kagstrom at netinsight.net> Signed-off-by: Johan Faltstrom <johan.faltstrom at netinsight.net> --- ChangeLog: v2: Improve motivation for the patch 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
