r8152: fix the sw rx checksum is unavailable

[ Upstream commit 19c0f40d4fca3a47b8f784a627f0467f0138ccc8 ]

Fix the hw rx checksum is always enabled, and the user couldn't switch
it to sw rx checksum.

Note that the RTL_VER_01 only support sw rx checksum only. Besides,
the hw rx checksum for RTL_VER_02 is disabled after
commit b9a321b48af4 ("r8152: Fix broken RX checksums."). Re-enable it.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 32b7ec976dccf302b7be0ba2c8a95af2858fa80b..ed512a41c5c9555e44efc7ce605134de2e5b5b18 100644 (file)
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -1645,7 +1645,7 @@ static u8 r8152_rx_csum(struct r8152 *tp, struct rx_desc *rx_desc)
        u8 checksum = CHECKSUM_NONE;
        u32 opts2, opts3;
 
-       if (tp->version == RTL_VER_01)
+       if (!(tp->netdev->features & NETIF_F_RXCSUM))
                goto return_result;
 
        opts2 = le32_to_cpu(rx_desc->opts2);
@@ -4221,6 +4221,11 @@ static int rtl8152_probe(struct usb_interface *intf,
                                NETIF_F_HIGHDMA | NETIF_F_FRAGLIST |
                                NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
 
+       if (tp->version == RTL_VER_01) {
+               netdev->features &= ~NETIF_F_RXCSUM;
+               netdev->hw_features &= ~NETIF_F_RXCSUM;
+       }
+
        netdev->ethtool_ops = &ops;
        netif_set_gso_max_size(netdev, RTL_LIMITED_TSO_SIZE);