On Wed, 2017-05-17 at 15:48 -0500, Gustavo A. R. Silva wrote:
> While looking into Coverity ID 1408956 I ran into the following
> piece
> of code at drivers/net/ethernet/intel/i40e/i40e_main.c:8807:
>
> 8807 if (pf->hw.mac.type == I40E_MAC_X722) {
> 8808 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE
> 8809 | I40E_FLAG_128_QP_RSS_CAPABLE
> 8810 | I40E_FLAG_HW_ATR_EVICT_CAPABLE
> 8811 | I40E_FLAG_OUTER_UDP_CSUM_CAPABLE
> 8812 | I40E_FLAG_WB_ON_ITR_CAPABLE
> 8813 |
> I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE
> 8814 | I40E_FLAG_NO_PCI_LINK_CHECK
> 8815 | I40E_FLAG_USE_SET_LLDP_MIB
> 8816 | I40E_FLAG_GENEVE_OFFLOAD_CAPABLE
> 8817 | I40E_FLAG_PTP_L4_CAPABLE
> 8818 | I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE;
> 8819 } else if ((pf->hw.aq.api_maj_ver > 1) ||
> 8820 ((pf->hw.aq.api_maj_ver == 1) &&
> 8821 (pf->hw.aq.api_min_ver > 4))) {
> 8822 /* Supported in FW API version higher than 1.4 */
> 8823 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
> 8824 pf->flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
> 8825 } else {
> 8826 pf->flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
> 8827 }
>
> The issue here is that the assignment at line 8823 is overwritten
> by
> the code at line 8824.
>
> I'm suspicious that line 8824 should be remove and a patch like the
> following can be applied:
>
> index d5c9c9e..48ffa73 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_main.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
> @@ -8821,7 +8821,6 @@ static int i40e_sw_init(struct i40e_pf *pf)
> (pf->hw.aq.api_min_ver > 4))) {
> /* Supported in FW API version higher than 1.4 */
> pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
> - pf->flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
> } else {
> pf->flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
> }
>
> What do you think?This issue is already fixed in my dev-queue branch on my next-queue tree.
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