netdev - Re: Missing skb->dst with flow offloading

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Message-ID: <CAHmME9qmurA1DJ=VaAnwu78OgHM5DQg7iZpoR+oh2s7pHs+inA@mail.gmail.com>
Date:   Wed, 30 May 2018 20:30:03 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Pablo Neira Ayuso <pablo@...filter.org>
Cc:     Felix Fietkau <nbd@....name>, netfilter-devel@...r.kernel.org,
        Netdev <netdev@...r.kernel.org>, openwrt-devel@...ts.openwrt.org,
        Jaap Buurman <jaapbuurman@...il.com>,
        WireGuard mailing list <wireguard@...ts.zx2c4.com>
Subject: Re: Missing skb->dst with flow offloading

On Wed, May 30, 2018 at 8:24 PM, Pablo Neira Ayuso <pablo@...filter.org> wrote:
> May it crash the kernel because it's assuming is set? If so, then
> I'd appreciate if you send us a patch to

I suspect it won't crash, but the pmtu might wind up wrong / not calculated.

> Please, use the nf-next.git tree to patch nf_flow_offload_ip_hook()
> and nf_flow_offload_ip6_hook(), it's rather late, we'll request a
> -stable submission for this if needed.

Given the above, I'll submit a patch, though I don't suppose it will
be necessary for -stable.