On Tue, Feb 24, 2015 at 5:36 PM, Felipe Balbi <balbi@xxxxxx> wrote:
> Hi,
>
> On Thu, Feb 05, 2015 at 12:19:23PM +0100, Yegor Yefremov wrote:
>> I have a problem with my am335x based board and USB.
>>
>> Kernel: Linux version 3.18.1 (YegorYefremov@development1) (gcc version
>> 4.9.2 (Buildroot 2015.02-git-00797-gf1b07c0) ) #1 SMP Thu Jan 15
>> 15:31:27 CET 2015
>>
>> I took two devices and equipped them with USB WLAN cards: Bus 001
>> Device 003: ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless
>> Adapter. One device as AP and another as client. Client makes
>> permanent ping to AP. And from time to time I start nuttcp session.
>> After 2-3 days I get following errors:
>
> 2-3 days ? oh man... :-)
>
> Here's one thing to try. Can you do some variable size pingtest ?
> Something like below should do ?
>
> random()
> {
> size=$(dd if=/dev/urandom count=1 2>/dev/null|cksum|
> cut -f1 -d" "|tr '-' '\0')
> size=$(expr $size % 60000)
> }
>
> num=$1
>
> if [ -z $num ]
> then
> num=10000
> fi
>
> while ! ifconfig usb0 >/dev/null 2>&1; do
> printf "waiting for usb0\n"
> sleep 1;
> done
>
> ifconfig usb0 192.168.2.14
>
> for i in $(seq 1 $num); do
> random
> printf "%d: \t pinging with size %-27d" $i $size
> if ! ping -c 6 192.168.2.15 -s $size -q -i 0 >/dev/null 2>&1; then
> printf "FAILED\n"
> break
> fi
> printf "PASSED\n"
> done
Still haven't tried your test, but have seen this interesting
patch/proposal http://e2e.ti.com/support/arm/sitara_arm/f/791/t/404743.
Seems to be somehow related.
Yegor
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