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 <greearb@candelatech.com>
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 @@
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 @@
/* 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);