| Message ID | 1498149872-16623-1-git-send-email-tushar.n.dave@oracle.com |
|---|---|
| State | Accepted |
| Delegated to: | Jeff Kirsher |
| Headers | show |
> -----Original Message----- > From: Intel-wired-lan [mailto:intel-wired-lan-bounces@osuosl.org] On > Behalf Of Tushar Dave > Sent: Thursday, June 22, 2017 9:45 AM > To: Kirsher, Jeffrey T <jeffrey.t.kirsher@intel.com>; intel-wired- > lan@lists.osuosl.org; netdev@vger.kernel.org > Subject: [Intel-wired-lan] [next-queue PATCH] i40evf: Use le32_to_cpu > before evaluating HW desc fields > > i40e hardware descriptor fields are in little-endian format. Driver must use > le32_to_cpu while evaluating these fields otherwise on big-endian arch we > end up evaluating incorrect values, cause errors > like: > i40evf 0000:03:0a.0: Expected response 24 from PF, received 402653184 > i40evf 0000:03:0a.1: Expected response 7 from PF, received 117440512 > > Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com> > Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> > --- > drivers/net/ethernet/intel/i40evf/i40evf_main.c | 14 +++++++------- > 1 file changed, 7 insertions(+), 7 deletions(-) Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/drivers/net/ethernet/intel/i40evf/i40evf_main.c index 7c213a3..93536b9 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c +++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c @@ -1957,8 +1957,8 @@ static void i40evf_adminq_task(struct work_struct *work) container_of(work, struct i40evf_adapter, adminq_task); struct i40e_hw *hw = &adapter->hw; struct i40e_arq_event_info event; - struct virtchnl_msg *v_msg; - i40e_status ret; + enum virtchnl_ops v_op; + i40e_status ret, v_ret; u32 val, oldval; u16 pending; @@ -1970,15 +1970,15 @@ static void i40evf_adminq_task(struct work_struct *work) if (!event.msg_buf) goto out; - v_msg = (struct virtchnl_msg *)&event.desc; do { ret = i40evf_clean_arq_element(hw, &event, &pending); - if (ret || !v_msg->v_opcode) + v_op = (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high); + v_ret = (i40e_status)le32_to_cpu(event.desc.cookie_low); + + if (ret || !v_op) break; /* No event to process or error cleaning ARQ */ - i40evf_virtchnl_completion(adapter, v_msg->v_opcode, - (i40e_status)v_msg->v_retval, - event.msg_buf, + i40evf_virtchnl_completion(adapter, v_op, v_ret, event.msg_buf, event.msg_len); if (pending != 0) memset(event.msg_buf, 0, I40EVF_MAX_AQ_BUF_SIZE);