ucc_geth: Add 16 bytes to max TX frame for VLANs

Creating a VLAN interface on top of ucc_geth adds 4 bytes
to the frame and the HW controller is not prepared to
TX a frame bigger than 1518 bytes which is 4 bytes too
small for a full VLAN frame. Add 16 bytes which will handle
the a simple VLAN and leaves 12 bytes for future expansion.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index 17a46e7..9ac14f8 100644 (file)
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@@ -116,10 +116,10 @@ static struct ucc_geth_info ugeth_primary_info = {
        .maxGroupAddrInHash = 4,
        .maxIndAddrInHash = 4,
        .prel = 7,
-       .maxFrameLength = 1518,
+       .maxFrameLength = 1518+16, /* Add extra bytes for VLANs etc. */
        .minFrameLength = 64,
-       .maxD1Length = 1520,
-       .maxD2Length = 1520,
+       .maxD1Length = 1520+16, /* Add extra bytes for VLANs etc. */
+       .maxD2Length = 1520+16, /* Add extra bytes for VLANs etc. */
        .vlantype = 0x8100,
        .ecamptr = ((uint32_t) NULL),
        .eventRegMask = UCCE_OTHER,