From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesper Dangaard Brouer Subject: Re: [PATCH 0/1] XDP Program for Ip forward Date: Wed, 4 Oct 2017 17:07:55 +0200 Message-ID: <20171004170755.4b1d8de4@redhat.com> References: <1507016225-319-1-git-send-email-Christina.Jacob@cavium.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: brouer@redhat.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org To: cjacob Return-path: In-Reply-To: <1507016225-319-1-git-send-email-Christina.Jacob@cavium.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org First of all thank you for working on this. On Tue, 3 Oct 2017 13:07:04 +0530 cjacob wrote: > Usage: ./xdp3 [-S] > > -S to choose generic xdp implementation > [Default is driver xdp implementation] > ifindex - the index of the interface to which > the xdp program has to be attached. > in 4.14-rc3 kernel. I would prefer if we can name the program something more descriptive than "xdp3". What about "xdp_redirect_router" or "xdp_router_ipv4" ? I would also appreciate if we can stop using ifindex'es, and instead use normal device ifname's. And simply do the lookup to the ifindex in the program via if_nametoindex(ifname), see how in [1] and [2]. When adding more ifname's you can just use the same trick as with multiple --cpu options like [1] and [2]. [1] http://lkml.kernel.org/r/150711864538.9499.11712573036995600273.stgit@firesoul [2] https://github.com/netoptimizer/prototype-kernel/blob/master/kernel/samples/bpf/xdp_redirect_cpu_user.c -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer