[dpdk-dev] [PATCH v2] app/testpmd: retain all original dev conf when config DCB

["Min Hu (Connor)" <humin29@huawei.com>]

From: Huisong Li <lihuisong@huawei.com>

When configuring DCB, testpmd retains the rx_mode/tx_mode configuration in
rte_port->dev_conf. But some configurations, such as the link_speed, were
not saved if they were set before configuring DCB.

Fixes: 1a572499beb6 ("app/testpmd: setup DCB forwarding based on traffic class")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Acked-by: Xiaoyun Li <xiaoyun.li@intel.com>
---
v2:
* fixed commit log.
---
 app/test-pmd/testpmd.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index eec4f1b81d..12a0db8796 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -3729,10 +3729,8 @@ init_port_dcb_config(portid_t pid,
 	}
 	rte_port = &ports[pid];
 
-	memset(&port_conf, 0, sizeof(struct rte_eth_conf));
-
-	port_conf.rxmode = rte_port->dev_conf.rxmode;
-	port_conf.txmode = rte_port->dev_conf.txmode;
+	/* retain the original device configuration. */
+	memcpy(&port_conf, &rte_port->dev_conf, sizeof(struct rte_eth_conf));
 
 	/*set configuration of DCB in vt mode and DCB in non-vt mode*/
 	retval = get_eth_dcb_conf(pid, &port_conf, dcb_mode, num_tcs, pfc_en);
-- 
2.33.0