power: support missing Rx queue info

Since some vdevs like virtio and vhost do not support rxq_info_get and
queue state inquiry, the error return value -ENOTSUP need to be ignored
when queue_stopped cannot get rx queue information and rx queue state.
This patch changes the return value of queue_stopped when
rte_eth_rx_queue_info_get return -ENOTSUP to support vdevs which cannot
provide rx queue information and rx queue state enable power management.

Fixes: 209fd585456c ("power: make ethdev power management thread unsafe")
Cc: stable@dpdk.org
Signed-off-by: Miao Li <miao.li@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>

diff --git a/lib/power/rte_power_pmd_mgmt.c b/lib/power/rte_power_pmd_mgmt.c
index 0ce40f0..39a2b4c 100644 (file)
--- a/lib/power/rte_power_pmd_mgmt.c
+++ b/lib/power/rte_power_pmd_mgmt.c
@@ -382,8 +382,13 @@ queue_stopped(const uint16_t port_id, const uint16_t queue_id)
 {
        struct rte_eth_rxq_info qinfo;
 
-       if (rte_eth_rx_queue_info_get(port_id, queue_id, &qinfo) < 0)
-               return -1;
+       int ret = rte_eth_rx_queue_info_get(port_id, queue_id, &qinfo);
+       if (ret < 0) {
+               if (ret == -ENOTSUP)
+                       return 1;
+               else
+                       return -1;
+       }
 
        return qinfo.queue_state == RTE_ETH_QUEUE_STATE_STOPPED;
 }