From eeb69aa443e8cdc945405c48f21ce03f5a3b1f86 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Fri, 10 Feb 2012 15:04:32 +0000 Subject: [PATCH] 8139too: Support RX-FCS flag. This allows the NIC to pass the Ethernet FCS on up the stack, and is useful when sniffing networks. Signed-off-by: Ben Greear --- drivers/net/ethernet/realtek/8139too.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/realtek/8139too.c b/drivers/net/ethernet/realtek/8139too.c index 1b9a090d4865..abd6aca70e9b 100644 --- a/drivers/net/ethernet/realtek/8139too.c +++ b/drivers/net/ethernet/realtek/8139too.c @@ -1023,6 +1023,7 @@ static int __devinit rtl8139_init_one (struct pci_dev *pdev, dev->vlan_features = dev->features; dev->hw_features |= NETIF_F_RXALL; + dev->hw_features |= NETIF_F_RXFCS; dev->irq = pdev->irq; @@ -1970,7 +1971,10 @@ static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp, /* read size+status of next frame from DMA ring buffer */ rx_status = le32_to_cpu (*(__le32 *) (rx_ring + ring_offset)); rx_size = rx_status >> 16; - pkt_size = rx_size - 4; + if (likely(!(dev->features & NETIF_F_RXFCS))) + pkt_size = rx_size - 4; + else + pkt_size = rx_size; netif_dbg(tp, rx_status, dev, "%s() status %04x, size %04x, cur %04x\n", __func__, rx_status, rx_size, cur_rx); -- 2.30.2