netdev - Re: [PATCH net 2/2] macsec: fix checksumming after decryption

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 02 Jul 2019 06:24:14 +0200
From:   Andreas Steinmetz <ast@...dv.de>
To:     Willem de Bruijn <willemdebruijn.kernel@...il.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        Sabrina Dubroca <sd@...asysnail.net>
Subject: Re: [PATCH net 2/2] macsec: fix checksumming after decryption

On Sun, 2019-06-30 at 21:47 -0400, Willem de Bruijn wrote:
> On Sun, Jun 30, 2019 at 4:48 PM Andreas Steinmetz <ast@...dv.de>
> wrote:
> > Fix checksumming after decryption.
> > 
> > Signed-off-by: Andreas Steinmetz <ast@...dv.de>
> > 
> > --- a/drivers/net/macsec.c      2019-06-30 22:14:10.250285314 +0200
> > +++ b/drivers/net/macsec.c      2019-06-30 22:15:11.931230417 +0200
> > @@ -869,6 +869,7 @@
> > 
> >  static void macsec_finalize_skb(struct sk_buff *skb, u8 icv_len,
> > u8 hdr_len)
> >  {
> > +       skb->ip_summed = CHECKSUM_NONE;
> >         memmove(skb->data + hdr_len, skb->data, 2 * ETH_ALEN);
> >         skb_pull(skb, hdr_len);
> >         pskb_trim_unique(skb, skb->len - icv_len);
> 
> Does this belong in macset_reset_skb?

Putting this in macsec_reset_skb would then miss out the "nosci:" part
of the RX path in macsec_handle_frame().