i40iw: Fix sequence number for the first partial FPDU

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 <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/i40iw/i40iw_d.h b/drivers/infiniband/hw/i40iw/i40iw_d.h
index 65ec39e3746b42fe351e3c8efaf1fc4e9960f3fa..b8565872d744bf90e77fd883af3ba55344cd8b2f 100644 (file)
--- 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
 
 #define I40IW_TERM_SENT 0x01

diff --git a/drivers/infiniband/hw/i40iw/i40iw_puda.c b/drivers/infiniband/hw/i40iw/i40iw_puda.c
index 796a815b53fd3c5e00d3ba4ceab7f6729d1c3c40..f64b6700f43f32f8d141a801d41837d0a8df5c1c 100644 (file)
--- 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_puda_rsrc *ieq,
        u32 *hw_host_ctx = (u32 *)qp->hw_host_ctx;
        u32 rcv_wnd = hw_host_ctx[23];
        /* first partial seq # in q2 */
-       u32 fps = qp->q2_buf[16];
+       u32 fps = *(u32 *)(qp->q2_buf + Q2_FPSN_OFFSET);
        struct list_head *rxlist = &pfpdu->rxlist;
        struct list_head *plist;