From 4a481f1aec2dee4170f26d9c31f079cf56198795 Mon Sep 17 00:00:00 2001 From: Konstantin Ananyev Date: Mon, 9 Jun 2014 18:26:16 +0100 Subject: [PATCH] ethdev: prevent from starting/stopping already started/stopped device Signed-off-by: Konstantin Ananyev Acked-by: Thomas Monjalon --- 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 d10982fa9a..ab7137c2b3 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); } -- 2.20.1