[dpdk-stable] [dpdk-dev] [PATCH] net/ice: fix coverity issues

[Yang, Qiming]

-----Original Message-----
From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Wenzhuo Lu
Sent: Thursday, April 18, 2019 9:31 AM
To: dev at dpdk.org
Cc: Lu, Wenzhuo <wenzhuo.lu at intel.com>; stable at dpdk.org
Subject: [dpdk-dev] [PATCH] net/ice: fix coverity issues

Fix the issues reported by Coverity check, "Null-checking vsi suggests that it may be null, but it has already been dereferenced on all paths leading to the check."

Fixes: e0dcf94a0d7f ("net/ice: support VLAN ops")
Fixes: ff963bfa7cb1 ("net/ice: support RSS")
Cc: stable at dpdk.org

Signed-off-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
---
 drivers/net/ice/ice_ethdev.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c index 0946b19..5cca4a8 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -645,12 +645,14 @@ struct ice_xstats_name_off {
 	struct ice_fltr_list_entry *v_list_itr = NULL;
 	struct ice_vlan_filter *f;
 	struct LIST_HEAD_TYPE list_head;
-	struct ice_hw *hw = ICE_VSI_TO_HW(vsi);
+	struct ice_hw *hw;
 	int ret = 0;
 
 	if (!vsi || vlan_id > ETHER_MAX_VLAN_ID)
 		return -EINVAL;
 
+	hw = ICE_VSI_TO_HW(vsi);
+
 	/* If it's added and configured, return. */
 	f = ice_find_vlan_filter(vsi, vlan_id);
 	if (f) {
@@ -710,7 +712,7 @@ struct ice_xstats_name_off {
 	struct ice_fltr_list_entry *v_list_itr = NULL;
 	struct ice_vlan_filter *f;
 	struct LIST_HEAD_TYPE list_head;
-	struct ice_hw *hw = ICE_VSI_TO_HW(vsi);
+	struct ice_hw *hw;
 	int ret = 0;
 
 	/**
@@ -720,6 +722,8 @@ struct ice_xstats_name_off {
 	if (!vsi || vlan_id == 0 || vlan_id > ETHER_MAX_VLAN_ID)
 		return -EINVAL;
 
+	hw = ICE_VSI_TO_HW(vsi);
+
 	/* Can't find it, return an error */
 	f = ice_find_vlan_filter(vsi, vlan_id);
 	if (!f)
@@ -2553,13 +2557,16 @@ static int ice_macaddr_set(struct rte_eth_dev *dev,  static int  ice_set_rss_lut(struct ice_vsi *vsi, uint8_t *lut, uint16_t lut_size)  {
-	struct ice_pf *pf = ICE_VSI_TO_PF(vsi);
-	struct ice_hw *hw = ICE_VSI_TO_HW(vsi);
+	struct ice_pf *pf;
+	struct ice_hw *hw;
 	int ret;
 
 	if (!vsi || !lut)
 		return -EINVAL;
 
+	pf = ICE_VSI_TO_PF(vsi);
+	hw = ICE_VSI_TO_HW(vsi);
+
 	if (pf->flags & ICE_FLAG_RSS_AQ_CAPABLE) {
 		ret = ice_aq_set_rss_lut(hw, vsi->idx, TRUE,
 					 lut, lut_size);
--
1.9.3

Acked-by: Qiming Yang <qiming.yang at intel.com>