bgmac: omit the fcs

Do not include the frame check sequence when adding the skb to
netif_receive_skb(). This causes problems when this interface was
bridged to a wifi ap and a big package should be forwarded from this
Ethernet driver through a bride to the wifi client.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index bf985c04524e..bce30e72dfde 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -301,12 +301,16 @@ static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,
                         bgmac_err(bgmac, "Found poisoned packet at slot %d, DMA issue!\n",
                                   ring->start);
                 } else {
+                        /* Omit CRC. */
+                        len -= ETH_FCS_LEN;
+
                         new_skb = netdev_alloc_skb_ip_align(bgmac->net_dev, len);
                         if (new_skb) {
                                 skb_put(new_skb, len);
                                 skb_copy_from_linear_data_offset(skb, BGMAC_RX_FRAME_OFFSET,
                                                                  new_skb->data,
                                                                  len);
+                                skb_checksum_none_assert(skb);
                                 new_skb->protocol =
                                         eth_type_trans(new_skb, bgmac->net_dev);
                                 netif_receive_skb(new_skb);