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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: c040d90a-b52b-4f84-0fbd-08d58db0a468 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Mar 2018 15:46:55.3245 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1013 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: Shiraz Saleem [ Upstream commit df8b13a1b23356d01dfc4647a5629cdb0f4ce566 ] Partial FPDU processing is broken as the sequence number for the first partial FPDU is wrong due to incorrect Q2 buffer offset. The offset should be 64 rather than 16. Fixes: 786c6adb3a94 ("i40iw: add puda code") Signed-off-by: Shiraz Saleem Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/i40iw/i40iw_d.h | 1 + drivers/infiniband/hw/i40iw/i40iw_puda.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/i40iw/i40iw_d.h b/drivers/infiniband/hw/= i40iw/i40iw_d.h index 029083cb81d5..4b65e4140bd7 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_d.h +++ b/drivers/infiniband/hw/i40iw/i40iw_d.h @@ -97,6 +97,7 @@ #define RDMA_OPCODE_MASK 0x0f #define RDMA_READ_REQ_OPCODE 1 #define Q2_BAD_FRAME_OFFSET 72 +#define Q2_FPSN_OFFSET 64 #define CQE_MAJOR_DRV 0x8000 =20 #define I40IW_TERM_SENT 0x01 diff --git a/drivers/infiniband/hw/i40iw/i40iw_puda.c b/drivers/infiniband/= hw/i40iw/i40iw_puda.c index 796a815b53fd..f64b6700f43f 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_puda.c +++ b/drivers/infiniband/hw/i40iw/i40iw_puda.c @@ -1378,7 +1378,7 @@ static void i40iw_ieq_handle_exception(struct i40iw_p= uda_rsrc *ieq, u32 *hw_host_ctx =3D (u32 *)qp->hw_host_ctx; u32 rcv_wnd =3D hw_host_ctx[23]; /* first partial seq # in q2 */ - u32 fps =3D qp->q2_buf[16]; + u32 fps =3D *(u32 *)(qp->q2_buf + Q2_FPSN_OFFSET); struct list_head *rxlist =3D &pfpdu->rxlist; struct list_head *plist; =20 --=20 2.14.1