[dpdk-stable] [PATCH v4] app/testpmd: fix testpmd doesn't show RSS hash offload

[Jie Wang <jie1x.wang@intel.com>]

The driver may change offloads info into dev->data->dev_conf
in dev_configure which may cause port->dev_conf and port->rx_conf
contain outdated values.

This patch updates the offloads info if it changes to fix this issue.

Fixes: ce8d561418d4 ("app/testpmd: add port configuration settings")
Cc: stable@dpdk.org

Signed-off-by: Jie Wang <jie1x.wang@intel.com>
---
v4: delete the whitespace at the end of the line.
v3: 
 - check and update the "offloads" of "port->dev_conf.rx/txmode".
 - update the commit log.
v2: copy "rx/txmode.offloads", instead of copying the entire struct 
"dev->data->dev_conf.rx/txmode". 
---
 app/test-pmd/testpmd.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 1cdd3cdd12..b6e8d7cdd9 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -2475,6 +2475,11 @@ start_port(portid_t pid)
 		}
 
 		if (port->need_reconfig > 0) {
+			const struct rte_eth_dev *dev = &rte_eth_devices[pi];
+			struct rte_eth_conf *dev_conf;
+			int k;
+
+			dev_conf = &dev->data->dev_conf;
 			port->need_reconfig = 0;
 
 			if (flow_isolate_all) {
@@ -2508,6 +2513,28 @@ start_port(portid_t pid)
 				port->need_reconfig = 1;
 				return -1;
 			}
+			/* Apply Rx offloads configuration */
+			if (dev_conf->rxmode.offloads !=
+				port->dev_conf.rxmode.offloads) {
+				port->dev_conf.rxmode.offloads =
+					dev_conf->rxmode.offloads;
+				for (k = 0;
+				     k < port->dev_info.max_rx_queues;
+				     k++)
+					port->rx_conf[k].offloads =
+						dev_conf->rxmode.offloads;
+			}
+			/* Apply Tx offloads configuration */
+			if (dev_conf->txmode.offloads !=
+				port->dev_conf.txmode.offloads) {
+				port->dev_conf.txmode.offloads =
+					dev_conf->txmode.offloads;
+				for (k = 0;
+				     k < port->dev_info.max_tx_queues;
+				     k++)
+					port->tx_conf[k].offloads =
+						dev_conf->txmode.offloads;
+			}
 		}
 		if (port->need_reconfig_queues > 0) {
 			port->need_reconfig_queues = 0;
-- 
2.25.1