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08 September 2024, 02:26:05 UTC
Revision 05c00d82f4d170987ac29607e7f3c27223b52d1e authored by Elad Kanfi on 09 May 2016, 17:13:20 UTC, committed by David S. Miller on 10 May 2016, 19:04:49 UTC 
net: nps_enet: bug fix - handle lost tx interrupts
 
The tx interrupt is of edge type, and in case such interrupt is triggered
while it is masked it will not be handled even after tx interrupts are
re-enabled in the end of NAPI poll.
This will cause tx network to stop in the following scenario:
 * Rx is being handled, hence interrupts are masked.
 * Tx interrupt is triggered after checking if there is some tx to handle
   and before re-enabling the interrupts.
In this situation only rx transaction will release tx requests.

In order to handle the tx that was missed( if there was one ),
a NAPI reschdule was added after enabling the interrupts.

Signed-off-by: Elad Kanfi <eladkan@mellanox.com>
Acked-by: Noam Camus <noamca@mellanox.com>
Acked-by: Gilad Ben-Yossef <giladby@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent e5df49d
History
Tip revision: 05c00d82f4d170987ac29607e7f3c27223b52d1e authored by Elad Kanfi on 09 May 2016, 17:13:20 UTC
net: nps_enet: bug fix - handle lost tx interrupts
Tip revision: 05c00d8
File Mode Size
boot
configs
include
kernel
lib
mm
Kconfig -rw-r--r-- 1.6 KB
Kconfig.debug -rw-r--r-- 812 bytes
Makefile -rw-r--r-- 1.0 KB
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