[PATCH AUTOSEL for 4.14 033/100] i40iw: Correct ARP index mask

Sasha Levin
2018-01-28T22:26:59Z

From: Mustafa Ismail <mustafa.ismail@intel.com>

[ 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: 4e9042e647ff ("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@microsoft.com>
---
drivers/infiniband/hw/i40iw/i40iw_d.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/i40iw/i40iw_d.h b/drivers/infiniband/hw/i40iw/i40iw_d.h
index e191fa54ef62..24eabcad5e40 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_d.h
+++ b/drivers/infiniband/hw/i40iw/i40iw_d.h
@@ -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)
--
2.11.0