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Sun, 28 Jan 2018 17:54:21 -0500 Received: from mail-dm3nam03on0095.outbound.protection.outlook.com ([104.47.41.95]:55532 "EHLO NAM03-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753646AbeA1W2a (ORCPT ); Sun, 28 Jan 2018 17:28:30 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Mustafa Ismail , Shiraz Saleem , Jason Gunthorpe , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 14/49] i40iw: Correct ARP index mask Thread-Topic: [PATCH AUTOSEL for 4.9 14/49] i40iw: Correct ARP index mask Thread-Index: AQHTmIc31UUt+yqTzUuzxJE1vWGvkA== Date: Sun, 28 Jan 2018 22:27:44 +0000 Message-ID: <20180128222727.22404-14-alexander.levin@microsoft.com> References: <20180128222727.22404-1-alexander.levin@microsoft.com> In-Reply-To: <20180128222727.22404-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;MW2PR2101MB1097;7:FZ3xNi9S3U05eKyGh1KbD6CwkJvBSXDdtq4blWptkJ7StGbLCJVFGd3E1T+L99yv3V3T1T511+yMZv/nM+6I8rY3OofozQXUXjpaZbZum7msRonWrIRS5wy1u5GynEOrMY0RsXziLEnpoQ19GcFIyU1K08PSJLsb1XOpTetWdFUbyLjYA7MbORCJ4J9rkds2D3YmgWRT6GuG+0E80t2JPPpoTen3tOmvxgJvXP7i93yKOJ8k/XLN+noWCXnurObf x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 0e41ccd4-773c-4009-8947-08d5669e72eb x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(48565401081)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:MW2PR2101MB1097; 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x-microsoft-antispam-message-info: 7t+sEVLegsTMeqS+Bihmz6d2KpkyoJRlv5TuXhy6tdpe/VC/84LzkIXFTQxqBnI5aJWDiOA6hKSHcIftdYrv4g== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0e41ccd4-773c-4009-8947-08d5669e72eb X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Jan 2018 22:27:44.9325 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2PR2101MB1097 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Mustafa Ismail [ 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 Signed-off-by: Shiraz Saleem Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- 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 2fac1db0e0a0..d1328a697750 100644 --- 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) =20 #define I40IWQPC_ARPIDX_SHIFT 48 -#define I40IWQPC_ARPIDX_MASK (0xfffULL << I40IWQPC_ARPIDX_SHIFT) +#define I40IWQPC_ARPIDX_MASK (0xffffULL << I40IWQPC_ARPIDX_SHIFT) =20 #define I40IWQPC_FLOWLABEL_SHIFT 0 #define I40IWQPC_FLOWLABEL_MASK (0xfffffUL << I40IWQPC_FLOWLABEL_SHIFT) --=20 2.11.0