From: Haiyue Wang <haiyue.wang@intel.com>
Date: Fri, 27 Mar 2020 02:56:37 +0000 (+0800)
Subject: net/ice: acquire and disable DCF capability
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=cf5cad3bc755794ebc707eda994fe3c082654f0a

net/ice: acquire and disable DCF capability

Since the DCF (Device Config Function) controls the flow setting of
other VFs by the mailbox with PF, for security, it needs to acquire
the DCF capability from PF when starts, and disable it when exits.

Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
---

diff --git a/drivers/net/ice/ice_dcf.c b/drivers/net/ice/ice_dcf.c
index 0a99cceb1f..6ea68feb91 100644
--- a/drivers/net/ice/ice_dcf.c
+++ b/drivers/net/ice/ice_dcf.c
@@ -227,7 +227,7 @@ ice_dcf_get_vf_resource(struct ice_dcf_hw *hw)
 	int err, i;
 
 	caps = VIRTCHNL_VF_OFFLOAD_WB_ON_ITR | VIRTCHNL_VF_OFFLOAD_RX_POLLING |
-	       VIRTCHNL_VF_CAP_ADV_LINK_SPEED |
+	       VIRTCHNL_VF_CAP_ADV_LINK_SPEED | VIRTCHNL_VF_CAP_DCF |
 	       VF_BASE_MODE_OFFLOADS;
 
 	err = ice_dcf_send_cmd_req_no_irq(hw, VIRTCHNL_OP_GET_VF_RESOURCES,
@@ -264,6 +264,30 @@ ice_dcf_get_vf_resource(struct ice_dcf_hw *hw)
 	return 0;
 }
 
+static int
+ice_dcf_mode_disable(struct ice_dcf_hw *hw)
+{
+	int err;
+
+	err = ice_dcf_send_cmd_req_no_irq(hw, VIRTCHNL_OP_DCF_DISABLE,
+					  NULL, 0);
+	if (err) {
+		PMD_DRV_LOG(ERR, "Failed to send msg OP_DCF_DISABLE");
+		return err;
+	}
+
+	err = ice_dcf_recv_cmd_rsp_no_irq(hw, VIRTCHNL_OP_DCF_DISABLE,
+					  hw->arq_buf, ICE_DCF_AQ_BUF_SZ, NULL);
+	if (err) {
+		PMD_DRV_LOG(ERR,
+			    "Failed to get response of OP_DCF_DISABLE %d",
+			    err);
+		return -1;
+	}
+
+	return 0;
+}
+
 static int
 ice_dcf_check_reset_done(struct ice_dcf_hw *hw)
 {
@@ -467,6 +491,7 @@ ice_dcf_uninit_hw(struct rte_eth_dev *eth_dev, struct ice_dcf_hw *hw)
 	rte_intr_callback_unregister(intr_handle,
 				     ice_dcf_dev_interrupt_handler, hw);
 
+	ice_dcf_mode_disable(hw);
 	iavf_shutdown_adminq(&hw->avf);
 
 	rte_free(hw->arq_buf);