[PATCH v3 14/16] 8139too: Support RX-FCS flag.
From: <hidden>
Date: 2012-02-11 01:06:30
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Ben Greear <redacted> This allows the NIC to pass the Ethernet FCS on up the stack, and is useful when sniffing networks. Signed-off-by: Ben Greear <redacted> --- :100644 100644 1b9a090... abd6aca... M drivers/net/ethernet/realtek/8139too.c drivers/net/ethernet/realtek/8139too.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/net/ethernet/realtek/8139too.c b/drivers/net/ethernet/realtek/8139too.c
index 1b9a090..abd6aca 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);
--
1.7.3.4