net: hns: bug fix about broadcast/multicast packets

When the dsaf mode receives a broadcast packet, it will filter
the packet by comparing the received queue number and destination
queue number(get from forwarding table), if they are the same,
the packet will be filtered. Otherwise, the packet will be loopback.
So this patch select queue 0 to send broadcast and multicast packets.

Signed-off-by: Daode Huang <huangdaode@hisilicon.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 09ed237f4b4c7c72a6fa7a110d39dafa3bfa1810..5494e0e3fe8e6b8973f4586d976b14fedf18a135 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -1597,6 +1597,21 @@ struct rtnl_link_stats64 *hns_nic_get_stats64(struct net_device *ndev,
        return stats;
 }
 
+static u16
+hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb,
+                    void *accel_priv, select_queue_fallback_t fallback)
+{
+       struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
+       struct hns_nic_priv *priv = netdev_priv(ndev);
+
+       /* fix hardware broadcast/multicast packets queue loopback */
+       if (!AE_IS_VER1(priv->enet_ver) &&
+           is_multicast_ether_addr(eth_hdr->h_dest))
+               return 0;
+       else
+               return fallback(ndev, skb);
+}
+
 static const struct net_device_ops hns_nic_netdev_ops = {
        .ndo_open = hns_nic_net_open,
        .ndo_stop = hns_nic_net_stop,
@@ -1612,6 +1627,7 @@ static const struct net_device_ops hns_nic_netdev_ops = {
        .ndo_poll_controller = hns_nic_poll_controller,
 #endif
        .ndo_set_rx_mode = hns_nic_set_rx_mode,
+       .ndo_select_queue = hns_nic_select_queue,
 };
 
 static void hns_nic_update_link_status(struct net_device *netdev)