netdev - Re: [v2 3/3] samples: pktgen: allow to specify destination IP range (CIDR)

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Message-ID: <87ef0ks76q.fsf@toke.dk>
Date:   Fri, 13 Sep 2019 14:37:49 +0200
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Jesper Dangaard Brouer <brouer@...hat.com>,
        "Daniel T. Lee" <danieltimlee@...il.com>
Cc:     "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        brouer@...hat.com
Subject: Re: [v2 3/3] samples: pktgen: allow to specify destination IP range (CIDR)

Jesper Dangaard Brouer <brouer@...hat.com> writes:

> On Thu, 12 Sep 2019 03:48:07 +0900
> "Daniel T. Lee" <danieltimlee@...il.com> wrote:
>
>> diff --git a/samples/pktgen/pktgen_sample01_simple.sh b/samples/pktgen/pktgen_sample01_simple.sh
>> index 063ec0998906..08995fa70025 100755
>> --- a/samples/pktgen/pktgen_sample01_simple.sh
>> +++ b/samples/pktgen/pktgen_sample01_simple.sh
>> @@ -22,6 +22,7 @@ fi
>>  # Example enforce param "-m" for dst_mac
>>  [ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
>>  [ -z "$COUNT" ]   && COUNT="100000" # Zero means indefinitely
>> +[ -n "$DEST_IP" ] && read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
>
> The way the function "parse_addr" is called, in case of errors the
> 'err()' function is called inside, but it will not stop the program
> flow.  Instead that function will "only" echo the "ERROR", but program
> flow continues (even-thought 'err()' uses exit $exitcode).
>
> Maybe it is not solveable to get the exit/$?/status out? (I've tried
> different options, but didn't find a way).

`set -o errexit`? :)

-Toke