[dpdk-dev] [Bug 23] Ixgbe driver writes to reserved bit in the EIMC register
bugzilla at dpdk.org
bugzilla at dpdk.org
Sun Apr 1 14:48:37 CEST 2018
https://dpdk.org/tracker/show_bug.cgi?id=23
Bug ID: 23
Summary: Ixgbe driver writes to reserved bit in the EIMC
register
Product: DPDK
Version: unspecified
Hardware: All
OS: All
Status: CONFIRMED
Severity: minor
Priority: Normal
Component: ethdev
Assignee: dev at dpdk.org
Reporter: solal.pirelli at gmail.com
Target Milestone: ---
The Intel 82599 data sheet
(https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/82599-10-gbe-controller-datasheet.pdf,
§8.2.3.5.4) states that bit 31 of the EIMC register is reserved.
However, the ixgbe driver writes to this bit anyway, e.g. in
ixgbe_stop_adapter_generic
(http://dpdk.org/browse/dpdk/tree/drivers/net/ixgbe/base/ixgbe_common.c?h=v18.02#n1126
with the mask defined as all-1s in
http://dpdk.org/browse/dpdk/tree/drivers/net/ixgbe/base/ixgbe_type.h?h=v18.02#n2047).
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