[dpdk-dev] [PATCH v4] app/testpmd: fix DCB set failure

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

When set DCB in testpmd, there is a segmentation fault. It is
because the local variable rss_conf in get_eth_dcb_conf()
is not cleared, so that the pointer member variable rss_key has
a random address, which leads to an error in the following
processing. This patch initialized the local variable rss_conf
to avoid this situation.

Fixes: ac7c491c3fec ("app/testpmd: fix DCB config")
Cc: stable@dpdk.org

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

---
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 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 8e10a6fc3..1f6ca742a 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -3549,6 +3549,8 @@ rte_eth_dev_rss_hash_conf_get(uint16_t port_id,
 {
 	struct rte_eth_dev *dev;
 
+	memset(rss_conf, 0, sizeof(*rss_conf));
+
 	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);
-- 
2.17.1