r8169: improve max jumbo packet size definition

Sync definition of max jumbo packet size with vendor driver and reserve
22 bytes for VLAN ethernet header plus checksum.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index aa3e63e031dac54d01f834d3a0cb88edf79b5311..82f2ae7b6cf7a275bf34f5809228df64ce2bbcdc 100644 (file)
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -88,10 +88,10 @@
 #define RTL_R16(tp, reg)               readw(tp->mmio_addr + (reg))
 #define RTL_R32(tp, reg)               readl(tp->mmio_addr + (reg))
 
-#define JUMBO_4K       (4*1024 - ETH_HLEN - 2)
-#define JUMBO_6K       (6*1024 - ETH_HLEN - 2)
-#define JUMBO_7K       (7*1024 - ETH_HLEN - 2)
-#define JUMBO_9K       (9*1024 - ETH_HLEN - 2)
+#define JUMBO_4K       (4 * SZ_1K - VLAN_ETH_HLEN - ETH_FCS_LEN)
+#define JUMBO_6K       (6 * SZ_1K - VLAN_ETH_HLEN - ETH_FCS_LEN)
+#define JUMBO_7K       (7 * SZ_1K - VLAN_ETH_HLEN - ETH_FCS_LEN)
+#define JUMBO_9K       (9 * SZ_1K - VLAN_ETH_HLEN - ETH_FCS_LEN)
 
 static const struct {
        const char *name;