[dpdk-dev] [PATCHv2 3/4] ethdev: prevent from starting/stopping already started/stopped device
Konstantin Ananyev
konstantin.ananyev at intel.com
Mon Jun 9 19:26:16 CEST 2014
From: Konstantin Ananyev <konstantin.ananyev at intel.com>
Signed-off-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
---
lib/librte_ether/rte_ethdev.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 11e877b..47bcee1 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -764,6 +764,14 @@ rte_eth_dev_start(uint8_t port_id)
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
+
+ if (dev->data->dev_started != 0) {
+ PMD_DEBUG_TRACE("Device with port_id=%" PRIu8
+ " already started\n",
+ port_id);
+ return (0);
+ }
+
diag = (*dev->dev_ops->dev_start)(dev);
if (diag == 0)
dev->data->dev_started = 1;
@@ -791,6 +799,14 @@ rte_eth_dev_stop(uint8_t port_id)
dev = &rte_eth_devices[port_id];
FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
+
+ if (dev->data->dev_started == 0) {
+ PMD_DEBUG_TRACE("Device with port_id=%" PRIu8
+ " already stopped\n",
+ port_id);
+ return;
+ }
+
dev->data->dev_started = 0;
(*dev->dev_ops->dev_stop)(dev);
}
--
1.8.3.1
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