@@ -564,6 +564,7 @@ static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
struct sk_buff *skb;
struct hnae_desc *desc;
struct hnae_desc_cb *desc_cb;
+ struct ethhdr *eh;
unsigned char *va;
int bnum, length, i;
int pull_len;
@@ -670,6 +671,14 @@ out_bnum_err:
return -EFAULT;
}
+ /* filter out multicast pkt with the same src mac as this port */
+ eh = (struct ethhdr *)skb->data;
+ if (unlikely(is_multicast_ether_addr(eh->h_dest) &&
+ ether_addr_equal(ndev->dev_addr, eh->h_source))) {
+ dev_kfree_skb_any(skb);
+ return -EFAULT;
+ }
+
ring->stats.rx_pkts++;
ring->stats.rx_bytes += skb->len;
The current upstreaming code fails to ping other IPv6 net device, because the enet receives the multicast packets with the src mac addr whick is the same as its mac addr. These packets need to be dropped. Signed-off-by: Kejian Yan <yankejian@huawei.com> --- drivers/net/ethernet/hisilicon/hns/hns_enet.c | 9 +++++++++ 1 file changed, 9 insertions(+)