[dpdk-dev] [PATCH v5] ethdev: fix DCB set failure

[Ting Xu <ting.xu@intel.com>]

When rte_eth_dev_rss_hash_conf_get() is called, if the variable
rss_conf is not initialized, the pointer member variable rss_key
may have a random address, which leads to an error in the following
processing. This patch initialized the variable rss_conf to avoid
this situation.

Fixes: 16321de09396 ("ethdev: allow to get RSS hash functions and key")
Cc: stable@dpdk.org

Signed-off-by: Ting Xu <ting.xu@intel.com>

---
v4->v5: modify commit log
V3->v4: fix build failure
v2->v3: move memset to rte_eth_dev_rss_hash_conf_get from testpmd
v1->v2: modify commit log, move memset to else leg
---
 lib/librte_ethdev/rte_ethdev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 8e10a6fc3..b20c6bb2d 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -3552,6 +3552,7 @@ rte_eth_dev_rss_hash_conf_get(uint16_t port_id,
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
 	dev = &rte_eth_devices[port_id];
 	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rss_hash_conf_get, -ENOTSUP);
+	memset(rss_conf, 0, sizeof(*rss_conf));
 	return eth_err(port_id, (*dev->dev_ops->rss_hash_conf_get)(dev,
 								   rss_conf));
 }
-- 
2.17.1