i40e: Additional checks for CEE APP priority validity

The firmware has added additional status information to allow software
to determine if the APP priority for FCoE/iSCSI/FIP is valid or not in
CEE DCBX mode.

This patch adds to support those additional checks and will only add
applications to the software table that have oper and sync bits set
without any error.

Change-ID: I0a76c52427dadf97d4dba4538a3068d05e4eb56b
Signed-off-by: Neerav Parikh <neerav.parikh@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_dcb.c b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
index 90de46aef557927e283b81a6ca2674af764d7b06..9aee35d284fa9fec179aee504e7f8bb50a8f9330 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_dcb.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
@@ -531,37 +531,55 @@ static void i40e_cee_to_dcb_config(
        dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
        dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
 
-       status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >>
-                 I40E_AQC_CEE_APP_STATUS_SHIFT;
+       i = 0;
+       status = (tlv_status & I40E_AQC_CEE_FCOE_STATUS_MASK) >>
+                 I40E_AQC_CEE_FCOE_STATUS_SHIFT;
        err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
        sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
        oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
-       /* Add APPs if Error is False and Oper/Sync is True */
+       /* Add FCoE APP if Error is False and Oper/Sync is True */
        if (!err && sync && oper) {
-               /* CEE operating configuration supports FCoE/iSCSI/FIP only */
-               dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
-
                /* FCoE APP */
-               dcbcfg->app[0].priority =
+               dcbcfg->app[i].priority =
                        (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
                         I40E_AQC_CEE_APP_FCOE_SHIFT;
-               dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
-               dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
+               dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
+               dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FCOE;
+               i++;
+       }
 
+       status = (tlv_status & I40E_AQC_CEE_ISCSI_STATUS_MASK) >>
+                 I40E_AQC_CEE_ISCSI_STATUS_SHIFT;
+       err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
+       sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
+       oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
+       /* Add iSCSI APP if Error is False and Oper/Sync is True */
+       if (!err && sync && oper) {
                /* iSCSI APP */
-               dcbcfg->app[1].priority =
+               dcbcfg->app[i].priority =
                        (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
                         I40E_AQC_CEE_APP_ISCSI_SHIFT;
-               dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
-               dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
+               dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
+               dcbcfg->app[i].protocolid = I40E_APP_PROTOID_ISCSI;
+               i++;
+       }
 
+       status = (tlv_status & I40E_AQC_CEE_FIP_STATUS_MASK) >>
+                 I40E_AQC_CEE_FIP_STATUS_SHIFT;
+       err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
+       sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
+       oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
+       /* Add FIP APP if Error is False and Oper/Sync is True */
+       if (!err && sync && oper) {
                /* FIP APP */
-               dcbcfg->app[2].priority =
+               dcbcfg->app[i].priority =
                        (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
                         I40E_AQC_CEE_APP_FIP_SHIFT;
-               dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
-               dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
+               dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
+               dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FIP;
+               i++;
        }
+       dcbcfg->numapps = i;
 }
 
 /**