netdev - Re: [RFC PATCH net-next 00/12] drop_monitor: Capture dropped packets and metadata

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]

Message-ID: <20190724081042.GB15878@splinter>
Date:   Wed, 24 Jul 2019 11:10:42 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     Toke Høiland-Jørgensen <toke@...hat.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, nhorman@...driver.com,
        dsahern@...il.com, roopa@...ulusnetworks.com,
        nikolay@...ulusnetworks.com, jakub.kicinski@...ronome.com,
        andy@...yhouse.net, f.fainelli@...il.com, andrew@...n.ch,
        vivien.didelot@...il.com, mlxsw@...lanox.com,
        Ido Schimmel <idosch@...lanox.com>
Subject: Re: [RFC PATCH net-next 00/12] drop_monitor: Capture dropped packets
 and metadata

On Tue, Jul 23, 2019 at 06:08:21PM +0200, Toke Høiland-Jørgensen wrote:
> Also, presumably the queue will have to change from a struct
> sk_buff_head to something that can hold XDP frames and whatever devlink
> puts there as well, right?

Good point!

For HW drops we get an SKB and relevant metadata from devlink about why
the packet was dropped etc. I plan to store a pointer to this metadata
in the SKB control block.

Let me see how the implementation goes. Even if use sk_buff_head for
now, I will make sure that converting to a more generalized data
structure is straightforward.