https://github.com/torvalds/linux
Revision 1e366161510f266516107a69db91f1f2edaea11c authored by Igor Russkikh on 14 December 2017, 09:34:41 UTC, committed by David S. Miller on 15 December 2017, 17:46:41 UTC
Systems with large MRRS on device (2K, 4K) with high data rates and/or
large MTU, atlantic observes DMA packet buffer overflow. On some systems
that causes PCIe transaction errors, hardware NMIs or datapath freeze.
This patch
1) Limits MRRS from device side to 2K (thats maximum our hardware supports)
2) Limit maximum size of outstanding TX DMA data read requests. This makes
hardware buffers running fine.

Signed-off-by: Pavel Belous <pavel.belous@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent e4d02ca
History
Tip revision: 1e366161510f266516107a69db91f1f2edaea11c authored by Igor Russkikh on 14 December 2017, 09:34:41 UTC
net: aquantia: Fix hardware DMA stream overload on large MRRS
Tip revision: 1e36616
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.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 31 bytes
.gitattributes -rw-r--r-- 30 bytes
.gitignore -rw-r--r-- 1.4 KB
.mailmap -rw-r--r-- 8.8 KB
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CREDITS -rw-r--r-- 96.2 KB
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Kconfig -rw-r--r-- 287 bytes
MAINTAINERS -rw-r--r-- 426.3 KB
Makefile -rw-r--r-- 58.3 KB
README -rw-r--r-- 722 bytes

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