This is a note to let you know that I've just added the patch titled
i40iw: Correct ARP index mask
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: i40iw-correct-arp-index-mask.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Fri Feb 23 11:48:40 CET 2018
From: Mustafa Ismail mustafa.ismail@intel.com Date: Tue, 21 Nov 2017 16:18:32 -0600 Subject: i40iw: Correct ARP index mask
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/hw/i40iw/i40iw_d.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/hw/i40iw/i40iw_d.h +++ b/drivers/infiniband/hw/i40iw/i40iw_d.h @@ -1102,7 +1102,7 @@ #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)
Patches currently in stable-queue which might be from mustafa.ismail@intel.com are
queue-4.9/i40iw-correct-arp-index-mask.patch