net/bonding: fix dead loop on RSS RETA update

[ upstream commit eb89395 ]

When parameter reta_size < RTE_RETA_GROUP_SIZE, reta_count will be 0.
Then this function will be deadloop.

Fixes: 734ce47 ("bonding: support RSS dynamic configuration")

Signed-off-by: Zhiguang He <hezhiguang3@huawei.com>
Acked-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>

drivers/net/bonding/rte_eth_bond_pmd.c

@@ -2670,7 +2670,8 @@ bond_ethdev_rss_reta_update(struct rte_eth_dev *dev,
 		return -EINVAL;
 
 	 /* Copy RETA table */
-	reta_count = reta_size / RTE_RETA_GROUP_SIZE;
+	reta_count = (reta_size + RTE_RETA_GROUP_SIZE - 1) /
+			RTE_RETA_GROUP_SIZE;
 
 	for (i = 0; i < reta_count; i++) {
 		internals->reta_conf[i].mask = reta_conf[i].mask;