netdev - RE: [PATCH net-next v5 5/5] macsec: Don't rely solely on the dst MAC address to identify destination MACsec device

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Message-ID: <IA1PR12MB63533E6FD3BE343E78ED60B9AB9F9@IA1PR12MB6353.namprd12.prod.outlook.com>
Date:   Sun, 16 Apr 2023 12:18:05 +0000
From:   Emeel Hakim <ehakim@...dia.com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     "davem@...emloft.net" <davem@...emloft.net>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "sd@...asysnail.net" <sd@...asysnail.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "leon@...nel.org" <leon@...nel.org>
Subject: RE: [PATCH net-next v5 5/5] macsec: Don't rely solely on the dst MAC
 address to identify destination MACsec device



> -----Original Message-----
> From: Jakub Kicinski <kuba@...nel.org>
> Sent: Friday, 14 April 2023 18:01
> To: Emeel Hakim <ehakim@...dia.com>
> Cc: davem@...emloft.net; pabeni@...hat.com; edumazet@...gle.com;
> sd@...asysnail.net; netdev@...r.kernel.org; leon@...nel.org
> Subject: Re: [PATCH net-next v5 5/5] macsec: Don't rely solely on the dst MAC
> address to identify destination MACsec device
> 
> External email: Use caution opening links or attachments
> 
> 
> On Thu, 13 Apr 2023 13:56:22 +0300 Emeel Hakim wrote:
> > +                     struct macsec_rx_sc *rx_sc = (md_dst && md_dst->type ==
> METADATA_MACSEC) ?
> > +                                                  find_rx_sc(&macsec->secy,
> > +                                                             md_dst->u.macsec_info.sci) : NULL;
> 
> Just a coding nit, in addition to Subbaraya's question:
> why use a ternary operator if the entire expression ends up being
> 3 lines of code? :| And well above 80 char.

right, maybe this is a better approach?

 struct macsec_rx_sc *rx_sc = NULL;

if (md_dst && md_dst->type == METADATA_MACSEC) 
        rx_sc  = find_rx_sc(&macsec->secy, md_dst->u.macsec_info.sci);

what do you think?