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authorJoakim Tjernlund <joakim.tjernlund@transmode.se>2012-04-30 00:36:55 +0200
committerDavid S. Miller <davem@davemloft.net>2012-05-03 02:09:04 +0200
commit70f8002d7813ffc5dd9ff3e9d01a17794fb4a4df (patch)
treeecaf94903e264f120fef757bd874bcf88b35688a /drivers/net
parentnet: ucc_geth, increase no. of HW RX descriptors (diff)
downloadlinux-70f8002d7813ffc5dd9ff3e9d01a17794fb4a4df.tar.xz
linux-70f8002d7813ffc5dd9ff3e9d01a17794fb4a4df.zip
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>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/freescale/ucc_geth.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index 17a46e76123f..9ac14f804851 100644
--- 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,