[dpdk-dev] [PATCH] test/bonding: fix failures after hiding ethdev internal structures

[Konstantin Ananyev <konstantin.ananyev@intel.com>]

link bounding auto-test internally creates emulated ethdev.
Some tests change Rx/Tx functions of this emulated device on the fly:
by directly modifying rte_eth_dev fields and without doing stop/start
for these devices.
As now ethdev uses rte_eth_fp_ops[] for fast-path functions, these
direct changes doesn't make expected effect.
Fix the problem by guarding fast-path functions changes with
rte_eth_dev_stop()/rte_eth_dev_start().

Fixes: 7a0935239b9e ("ethdev: make fast-path functions to use new flat array")

Reported-by: Lewei Yang <leweix.yang@intel.com>
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---
 app/test/virtual_pmd.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/app/test/virtual_pmd.c b/app/test/virtual_pmd.c
index 7e15b47eb0..ccdb418490 100644
--- a/app/test/virtual_pmd.c
+++ b/app/test/virtual_pmd.c
@@ -415,10 +415,14 @@ virtual_ethdev_rx_burst_fn_set_success(uint16_t port_id, uint8_t success)
 {
 	struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 
+	rte_eth_dev_stop(port_id);
+
 	if (success)
 		vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_success;
 	else
 		vrtl_eth_dev->rx_pkt_burst = virtual_ethdev_rx_burst_fail;
+
+	rte_eth_dev_start(port_id);
 }
 
 
@@ -428,6 +432,7 @@ virtual_ethdev_tx_burst_fn_set_success(uint16_t port_id, uint8_t success)
 	struct virtual_ethdev_private *dev_private = NULL;
 	struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 
+	rte_eth_dev_stop(port_id);
 	dev_private = vrtl_eth_dev->data->dev_private;
 
 	if (success)
@@ -436,6 +441,7 @@ virtual_ethdev_tx_burst_fn_set_success(uint16_t port_id, uint8_t success)
 		vrtl_eth_dev->tx_pkt_burst = virtual_ethdev_tx_burst_fail;
 
 	dev_private->tx_burst_fail_count = 0;
+	rte_eth_dev_start(port_id);
 }
 
 void
@@ -445,7 +451,6 @@ virtual_ethdev_tx_burst_fn_set_tx_pkt_fail_count(uint16_t port_id,
 	struct virtual_ethdev_private *dev_private = NULL;
 	struct rte_eth_dev *vrtl_eth_dev = &rte_eth_devices[port_id];
 
-
 	dev_private = vrtl_eth_dev->data->dev_private;
 	dev_private->tx_burst_fail_count = packet_fail_count;
 }
-- 
2.26.3