Replace field-by-field assignment of local configuration structures
with designated initializers. This ensures all fields, including
enable_loop_back and any padding, are zero-initialized.

The Coverity warning was always latent; the earlier use of
rte_memcpy() was hiding it from the analyzer.

Coverity issue: 501603
Fixes: 8cc72f2814dd ("examples/vmdq_dcb: support X710")
Cc: [email protected]

Signed-off-by: Stephen Hemminger <[email protected]>
---
 examples/vmdq_dcb/main.c | 31 +++++++++++++++----------------
 1 file changed, 15 insertions(+), 16 deletions(-)

diff --git a/examples/vmdq_dcb/main.c b/examples/vmdq_dcb/main.c
index 6eccee086d..d6f7b632b9 100644
--- a/examples/vmdq_dcb/main.c
+++ b/examples/vmdq_dcb/main.c
@@ -132,23 +132,23 @@ static struct rte_ether_addr 
vmdq_ports_eth_addr[RTE_MAX_ETHPORTS];
 static inline int
 get_eth_conf(struct rte_eth_conf *eth_conf)
 {
-       struct rte_eth_vmdq_dcb_conf conf;
-       struct rte_eth_vmdq_rx_conf  vmdq_conf;
-       struct rte_eth_dcb_rx_conf   dcb_conf;
-       struct rte_eth_vmdq_dcb_tx_conf tx_conf;
+       struct rte_eth_vmdq_dcb_conf conf = {
+               .nb_queue_pools = (enum rte_eth_nb_pools)num_pools,
+               .nb_pool_maps = num_pools,
+       };
+       struct rte_eth_vmdq_rx_conf vmdq_conf = {
+               .nb_queue_pools = (enum rte_eth_nb_pools)num_pools,
+               .nb_pool_maps = num_pools,
+       };
+       struct rte_eth_dcb_rx_conf dcb_conf = {
+               .nb_tcs = (enum rte_eth_nb_tcs)num_tcs,
+       };
+       struct rte_eth_vmdq_dcb_tx_conf tx_conf = {
+               .nb_queue_pools = (enum rte_eth_nb_pools)num_pools,
+       };
        uint8_t i;
 
-       conf.nb_queue_pools = (enum rte_eth_nb_pools)num_pools;
-       vmdq_conf.nb_queue_pools = (enum rte_eth_nb_pools)num_pools;
-       tx_conf.nb_queue_pools = (enum rte_eth_nb_pools)num_pools;
-       conf.nb_pool_maps = num_pools;
-       vmdq_conf.nb_pool_maps = num_pools;
-       conf.enable_default_pool = 0;
-       vmdq_conf.enable_default_pool = 0;
-       conf.default_pool = 0; /* set explicit value, even if not used */
-       vmdq_conf.default_pool = 0;
-
-       for (i = 0; i < conf.nb_pool_maps; i++) {
+       for (i = 0; i < num_pools; i++) {
                conf.pool_map[i].vlan_id = vlan_tags[i];
                vmdq_conf.pool_map[i].vlan_id = vlan_tags[i];
                conf.pool_map[i].pools = 1UL << i;
@@ -159,7 +159,6 @@ get_eth_conf(struct rte_eth_conf *eth_conf)
                dcb_conf.dcb_tc[i] = i % num_tcs;
                tx_conf.dcb_tc[i] = i % num_tcs;
        }
-       dcb_conf.nb_tcs = (enum rte_eth_nb_tcs)num_tcs;
 
        *eth_conf = vmdq_dcb_conf_default;
        eth_conf->rx_adv_conf.vmdq_dcb_conf = conf;
-- 
2.51.0

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