From: "Wiles, Keith" <keith.wiles@intel.com>
To: "Yigit, Ferruh" <ferruh.yigit@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] net/tap: driver closing tx interface on queue setup
Date: Mon, 30 Jan 2017 14:34:38 +0000 [thread overview]
Message-ID: <6B37A978-0F89-4299-86E1-5697392EDC49@intel.com> (raw)
In-Reply-To: <2c430141-94c1-5482-7fc2-94f5908b41e0@intel.com>
> On Jan 30, 2017, at 5:00 AM, Yigit, Ferruh <ferruh.yigit@intel.com> wrote:
>
> On 1/29/2017 2:12 AM, Keith Wiles wrote:
>> The tap driver setup both rx and tx file descriptors when the
>> rte_eth_rx_queue_setup() causing the tx to be closed when tx setup
>> was called.
>
> Can you please describe the problem more.
> Without this patch rx->fd == tx->fd, with this patch rx and tx has
> different file descriptors.
Let me look at this more, I am getting the same FD for both. Must be something else going on.
>
> What was the wrong with rx and tx having same fd?
>
> As far as I can see, rte_eth_rx_queue_setup() won't close tx->fd, that
> function will do nothing if rx or tx has valid fd.
The rte_eth_rx_queue_setup() look at line 1146 if rxq has a value then release it, which happens on both Rx/Tx code
rxq = dev->data->rx_queues;
if (rxq[rx_queue_id]) {
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_release,
-ENOTSUP);
(*dev->dev_ops->rx_queue_release)(rxq[rx_queue_id]);
rxq[rx_queue_id] = NULL;
}
if (rx_conf == NULL)
rx_conf = &dev_info.default_rxconf;
ret = (*dev->dev_ops->rx_queue_setup)(dev, rx_queue_id, nb_rx_desc,
socket_id, rx_conf, mp);
>
>>
>> Signed-off-by: Keith Wiles <keith.wiles@intel.com>
>
> <...>
Regards,
Keith
next prev parent reply other threads:[~2017-01-30 14:34 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-29 2:12 Keith Wiles
2017-01-30 11:00 ` Ferruh Yigit
2017-01-30 14:34 ` Wiles, Keith [this message]
2017-01-30 17:42 ` Ferruh Yigit
2017-01-30 18:20 ` Wiles, Keith
2017-01-30 19:31 ` Ferruh Yigit
2017-01-30 14:38 ` Pascal Mazon
2017-01-30 15:04 ` Wiles, Keith
2017-01-30 17:19 ` Ferruh Yigit
2017-01-30 20:54 ` [dpdk-dev] [PATCH v2] net/tap: fix invalid queue file descriptor Ferruh Yigit
2017-01-30 20:57 ` Wiles, Keith
2017-01-30 21:23 ` Ferruh Yigit
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