net/e1000/base: define max Rx jumbo frame size

Add definition MAX_RX_JUMBO_FRAME_SIZE for igb.

All igb parts (82575 and newer) have 9.5K max jumbo frame size.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

diff --git a/drivers/net/e1000/base/e1000_defines.h b/drivers/net/e1000/base/e1000_defines.h
index 69aa1f2..7d70ba6 100644 (file)
--- a/drivers/net/e1000/base/e1000_defines.h
+++ b/drivers/net/e1000/base/e1000_defines.h
@@ -468,6 +468,8 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #define ETHERNET_FCS_SIZE              4
 #define MAX_JUMBO_FRAME_SIZE           0x3F00
+/* The datasheet maximum supported RX size is 9.5KB (9728 bytes) */
+#define MAX_RX_JUMBO_FRAME_SIZE                0x2600
 #define E1000_TX_PTR_GAP               0x1F
 
 /* Extended Configuration Control and Size */