[LTP] [PATCH 2/2] broken_ip: TCONF when test run on unsupported protocol

[Petr Vorel]

Hi Alexey,

> Hi Petr,
> On 02.08.2021 21:06, Petr Vorel wrote:
> > Hi Alexey,

> >> Hi Petr,
> >> On 27.07.2021 20:35, Petr Vorel wrote:
> >>> Hi Alexey,

> >>>> On 14.07.2021 17:07, Petr Vorel wrote:
> >>>>> net_stress.broken_ip runtest file is correct, but some users try to run
> >>>>> tests manually.

> >>>>> Fixes: #843

> >> ...
> >>>>>  do_test()

> >>>> The generic version looks fine:

> >>>> Reviewed-by: Alexey Kodanev <aleksei.kodanev@bell-sw.com>

> >>> I didn't understand whether you'd prefer to add TST_IPV6=6 (or TST_IPV6=) where
> >>> needed or accept this patchset. Both would work.

> >> I think for manual runs it is better to set TST_IPV6=6 in the test
> >> so it will run the test rather the require passing some options.
> > It looks like specifying TST_IPV6=6 is not enough, because tests are using
> > $NS_ICMP_SENDER_DATA_MAXSIZE which is defined in tst_net.sh according to
> > TST_IPV6. We can

> > 1) overwrite NS_ICMP_SENDER_DATA_MAXSIZE="$NS_ICMPV6_SENDER_DATA_MAXSIZE"
> > 2) check TST_IPV6 before running tst_net_parse_args and if set overwrite -6 flag

> > But both are quite ugly, thus unless you have better idea I merge this patchset.


> Are you sure that you are getting the wrong maxsize? if TST_IPV6=6
> is set before the setup, in the test, why tst_net_setup() is setting
> the IPv4 value?

The problem is actually in IPv6, ns-icmpv6_sender does not support -c.
IPv6 only is only broken_ip-ihl tests, the other 4 are IPv4 only.
I tested variables after loading tst_net.sh, but that was later overwritten with
getopt -6. But setting it in the test function works (you probably meant this).
I still don't like having to specify 2 variables (yes both are needed), but it's
not a big deal thus I'll merge this version.

Kind regards,
Petr

--- testcases/network/stress/broken_ip/broken_ip-checksum
+++ testcases/network/stress/broken_ip/broken_ip-checksum
@@ -10,7 +10,10 @@ TST_TESTFUNC="do_test"
 
 do_test()
 {
-	tst_res TINFO "Sending ICMPv$TST_IPVER with wrong chksum field for $NS_DURATION sec"
+	TST_IPV6=
+	TST_IPVER=4
+
+	tst_res TINFO "Sending ICMPv4 with wrong chksum field for $NS_DURATION sec"
 	tst_icmp -t $NS_DURATION -s "0 100 500 1000 $NS_ICMP_SENDER_DATA_MAXSIZE" -c
 	tst_ping
 }


> > Kind regards,
> > Petr

> >>> Kind regards,
> >>> Petr