netdev - Re: [PATCHv2 net 1/2] selftest/bpf: add missed ip6ip6 test back

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Date:   Mon, 9 Nov 2020 14:25:35 -0800
From:   Martin KaFai Lau <kafai@...com>
To:     Hangbin Liu <liuhangbin@...il.com>
CC:     <netdev@...r.kernel.org>, William Tu <u9012063@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>, <bpf@...r.kernel.org>
Subject: Re: [PATCHv2 net 1/2] selftest/bpf: add missed ip6ip6 test back

On Mon, Nov 09, 2020 at 11:00:15AM +0800, Hangbin Liu wrote:
> On Fri, Nov 06, 2020 at 06:15:44PM -0800, Martin KaFai Lau wrote:
> > > -	if (iph->nexthdr == 58 /* NEXTHDR_ICMP */) {
> > Same here. Can this check be kept?
> 
> Hi Martin,
> 
> I'm OK to keep the checking, then what about _ipip6_set_tunnel()? It also
> doesn't have the ICMP checking.
It should.  Otherwise, what is the point on testing
"data + sizeof(*iph) > data_end" without checking anything from iph?