netdev - Re: [PATCH net-next 00/18] mlx5 RoCE/RDMA packet sniffer

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Message-ID: <CALzJLG-_m_+-fKWjuuEbi4z-vO+jQmumqV+BoOxKPQ2wgkveaQ@mail.gmail.com>
Date:	Tue, 21 Jun 2016 16:10:26 +0300
From:	Saeed Mahameed <saeedm@....mellanox.co.il>
To:	Saeed Mahameed <saeedm@...lanox.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Doug Ledford <dledford@...hat.com>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Maor Gottlieb <maorg@...lanox.com>,
	Huy Nguyen <huyn@...lanox.com>, Tal Alon <talal@...lanox.com>
Subject: Re: [PATCH net-next 00/18] mlx5 RoCE/RDMA packet sniffer

On Fri, Jun 17, 2016 at 5:43 PM, Saeed Mahameed <saeedm@...lanox.com> wrote:
> Hi Dave,
>
> This patch set introduces mlx5 RoCE/RDMA packet sniffer, it allows
> mlx5e netdevice to receive RoCE/RDMA or RAW ETH traffic which isn't
> supposed to be passed to the kernel stack, for sniffing and diagnostics
> purposes.  This traffic is still not supposed to go through the whole
> network stack processing and should only go to the non-protocol specific
> handlers (ptype_all). e.g: tcpdump, etc ..

Dave,

I would like to drop this series, we did some evaluation and there is
no straightforward way to tell the kernel to not process traffic that
should only go to tcpdump or (ptype_all).

We are evaluating a semi-pure userspace solution to sniff user space
traffic directly form userspace into libpcap. (verbs/rdma
plugin/extension for libpcap)

Sorry for any inconvenience,

Thanks,
Saeed.