netdev - Re: [PATCH net-next v5 4/4] samples: pktgen: allow to specify destination IP range (CIDR)

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Message-ID: <20191007101919.13c7f4cc@carbon>
Date:   Mon, 7 Oct 2019 10:19:19 +0200
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     "Daniel T. Lee" <danieltimlee@...il.com>
Cc:     Toke Høiland-Jørgensen <toke@...hat.com>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        brouer@...hat.com
Subject: Re: [PATCH net-next v5 4/4] samples: pktgen: allow to specify
 destination IP range (CIDR)

On Sat,  5 Oct 2019 17:25:09 +0900
"Daniel T. Lee" <danieltimlee@...il.com> wrote:

> Currently, kernel pktgen has the feature to specify destination
> address range for sending packet. (e.g. pgset "dst_min/dst_max")
> 
> But on samples, each pktgen script doesn't have any option to achieve this.
> 
> This commit adds the feature to specify the destination address range with CIDR.
> 
>     -d : ($DEST_IP)   destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed
> 
>     # ./pktgen_sample01_simple.sh -6 -d fe80::20/126 -p 3000 -n 4
>     # tcpdump ip6 and udp
>     05:14:18.082285 IP6 fe80::99.71 > fe80::23.3000: UDP, length 16
>     05:14:18.082564 IP6 fe80::99.43 > fe80::23.3000: UDP, length 16
>     05:14:18.083366 IP6 fe80::99.107 > fe80::22.3000: UDP, length 16
>     05:14:18.083585 IP6 fe80::99.97 > fe80::21.3000: UDP, length 16
> 
> Signed-off-by: Daniel T. Lee <danieltimlee@...il.com>

Acked-by: Jesper Dangaard Brouer <brouer@...hat.com>

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer