On Thu, Feb 4, 2016 at 5:23 PM, Michal Kazior <michal.kaz...@tieto.com> wrote:
> On 4 February 2016 at 12:49, Krishna Chaitanya <chaitanya.m...@gmail.com>
> wrote:
>> On Thu, Feb 4, 2016 at 5:02 PM, Michal Kazior <michal.kaz...@tieto.com>
>> wrote:
>>> On 4 February 2016 at 12:22, Krishna Chaitanya <chaitanya.m...@gmail.com>
>>> wrote:
>>>> Hi All,
>>>>
>>>> I am trying to run some iperf tests using mac80211_hwsim b/w AP and STA.
>>>> Even after tweaking the routing table, the packets are still not going
>>>> through
>>>> mac80211_hwsim instead they are just looping back.
>>>>
>>>> After a quick search i found that we should use different network
>>>> namespaces.
>>>> Can anyone tell me the exact procedure for this? I have found a procedure
>>>> in the below link, but i dont have the lxc-unshare for my embedded box.
>>>> Is there any alternate way for this.
>>>
>>> If you have a recent enough iproute2 package you can use:
>> Unfortunately i dont, will try to get the latest.
>>> ip netns add ns1
>>> ip netns exec ns1 bash # get the PID in the session and don't close it
>>> iw phy phyX set netns $pid_of_that_shell
>>> # you can close the bash now; phyX will remain in ns1
>>>
>>> Or you could try using ipv6 link-local addresses which will not
>>> require you to use namespaces at all.
>> Tried this but still not able to excite mac80211_hwsim TX path.
>> below are commands and config.
>>
>> wlan0 Link encap:Ethernet HWaddr 02:00:00:00:00:00
>> inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0
>> inet6 addr: fe80::ff:fe00:0/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:8 errors:0 dropped:1 overruns:0 frame:0
>> TX packets:38 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:648 (648.0 B) TX bytes:3680 (3.5 KiB)
>>
>> wlan1 Link encap:Ethernet HWaddr 02:00:00:00:01:00
>> inet addr:20.0.0.1 Bcast:20.255.255.255 Mask:255.0.0.0
>> inet6 addr: fe80::ff:fe00:100/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:3 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:126 (126.0 B) TX bytes:808 (808.0 B)
>>
>> iperf -s -B fe80::ff:fe00:0 &
>> iperf -c fe80::ff:fe00:0 -B fe80::ff:fe00:100 -t 60 -i 1
>>
>> Something wrong?
>
> For link-local addresses you must specify interface you want to use them.
>
> Also, there's an iperf switch to understand ipv6 "-V".
>
> iperf -V -i1 -s
> iperf -V -i1 -c fe80::ff:fe00:0%wlan1
> iperf -V -i1 -c fe80::ff:fe00:100%wlan0
>
Thanks a lot Michal. It worked like a charm.
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