netdev - Re: [PATCHv3 net 2/2] IPv6: reply ICMP error if the first fragment doesn't include all headers

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Message-ID: <20201023111841.5b0991cc@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net>
Date:   Fri, 23 Oct 2020 11:18:41 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Hangbin Liu <liuhangbin@...il.com>
Cc:     netdev@...r.kernel.org, Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>
Subject: Re: [PATCHv3 net 2/2] IPv6: reply ICMP error if the first fragment
 doesn't include all headers

On Fri, 23 Oct 2020 14:43:47 +0800 Hangbin Liu wrote:
> diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
> index ec448b71bf9a..0bda77d7e6b8 100644
> --- a/net/ipv6/icmp.c
> +++ b/net/ipv6/icmp.c
> @@ -145,6 +145,7 @@ static bool is_ineligible(const struct sk_buff *skb)
>  	int ptr = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
>  	int len = skb->len - ptr;
>  	__u8 nexthdr = ipv6_hdr(skb)->nexthdr;
> +	unsigned int offs = 0;
>  	__be16 frag_off;
>  
>  	if (len < 0)

net/ipv6/icmp.c: In function ‘is_ineligible’:
net/ipv6/icmp.c:148:15: warning: unused variable ‘offs’ [-Wunused-variable]
  148 |  unsigned int offs = 0;
      |               ^~~~