On my Supermicro X8DTH-6F motherboard, the onboard 82576 ethernet ports
are completely inoperable with the latest igb from sourceforge when
using RSS > 1. This is the error message:
igb 0000:01:00.0: Detected Tx Unit Hang
Tx Queue <0>
TDH <0>
TDT <1>
next_to_use <1>
next_to_clean <0>
buffer_info[next_to_clean]
time_stamp <10000b131>
next_to_watch <ffff88032f1f4000>
jiffies <10000b3b4>
desc.status <a8000>
Known-good versions:
sourceforge igb-5.2.5.tar.gz and earlier
upstream in-kernel igb
Known-bad versions:
sourceforge igb-5.2.9.2.tar.gz and later
The patch below reverts the change that is causing the problem.
Signed-off-by: Tony Battersby <to...@cybernetics.com>
---
--- igb-5.2.15/src/igb_main.c.orig 2014-09-18 12:12:17.000000000 -0400
+++ igb-5.2.15/src/igb_main.c 2015-01-06 17:47:07.000000000 -0500
@@ -408,7 +408,7 @@ static void igb_cache_ring_register(stru
adapter->rx_ring[i]->reg_idx = rbase_offset +
Q_IDX_82576(i);
}
- break;
+ /* Fall through */
case e1000_82575:
case e1000_82580:
case e1000_i350:
------------------------------------------------------------------------------
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