david/ipxe
david
/
ipxe
Archived
1
0
Fork 0
Code

[3c90x] Don't round up transmit packet length 

The 3c90x B and C revisions support rounding up the packet length to a
specific boundary.  Disable this feature to avoid overlength packets.

This fixes the loopback test.

Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Thomas Miletich 2013-08-19 13:16:27 +02:00 committed by Michael Brown
parent b324a9c243
commit e5f6471525
2 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/drivers/net/3c90x.c
View File

@ -346,11 +346,12 @@ static int a3c90x_transmit(struct net_device *netdev,
tx_cur_desc->DnNextPtr = 0;
/* FrameStartHeader differs in 90x and >= 90xB
* It contains length in 90x and a round up boundary and packet ID for
* 90xB and 90xC. We can leave this to 0 for 90xB and 90xC.
* It contains the packet length in 90x and a round up boundary and
* packet ID for 90xB and 90xC. Disable packet length round-up on the
* later revisions.
*/
tx_cur_desc->FrameStartHeader =
fshTxIndicate | (inf_3c90x->isBrev ? 0x00 : len);
fshTxIndicate | (inf_3c90x->isBrev ? fshRndupDefeat : len);
tx_cur_desc->DataAddr = virt_to_bus(iob->data);
tx_cur_desc->DataLength = len | downLastFrag;

1
src/drivers/net/3c90x.h
View File

@ -202,6 +202,7 @@ enum GlobalResetParams {
enum FrameStartHeader {
fshTxIndicate = 0x8000,
fshDnComplete = 0x10000,
fshRndupDefeat = 0x10000000,
};
enum UpDownDesc {