Commit f917b1c6 authored Nov 21, 2017 by Mustafa Ismail Committed by Greg Kroah-Hartman Feb 25, 2018

i40iw: Correct ARP index mask




[ Upstream commit a283cdc4d3670700182c820b59078387f9a01a30 ]

The ARP table entry indexes are aliased to 12bits
instead of the intended 16bits when uploaded to
the QP Context. This will present an issue when the
number of connections exceeds 4096 as ARP entries are
reused. Fix this by adjusting the mask to account for
the full 16bits.

Fixes: 4e9042e6 ("i40iw: add hw and utils files")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 03f23424

drivers/infiniband/hw/i40iw/i40iw_d.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -1109,7 +1109,7 @@
		#define I40IWQPC_VLANTAG_MASK (0xffffULL << I40IWQPC_VLANTAG_SHIFT)

		#define I40IWQPC_ARPIDX_SHIFT 48
		#define I40IWQPC_ARPIDX_MASK (0xfffULL << I40IWQPC_ARPIDX_SHIFT)
		#define I40IWQPC_ARPIDX_MASK (0xffffULL << I40IWQPC_ARPIDX_SHIFT)

		#define I40IWQPC_FLOWLABEL_SHIFT 0
		#define I40IWQPC_FLOWLABEL_MASK (0xfffffUL << I40IWQPC_FLOWLABEL_SHIFT)