From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Fastabend Subject: Re: [bpf-next V4 PATCH 13/14] bpf: finally expose xdp_rxq_info to XDP bpf-programs Date: Thu, 4 Jan 2018 20:34:41 -0800 Message-ID: References: <151497504273.18176.10177133999720101758.stgit@firesoul> <151497517476.18176.6299242208330652860.stgit@firesoul> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, Alexei Starovoitov , dsahern@gmail.com, gospo@broadcom.com, bjorn.topel@intel.com, michael.chan@broadcom.com To: Jesper Dangaard Brouer , Daniel Borkmann , Alexei Starovoitov Return-path: Received: from mail-pf0-f195.google.com ([209.85.192.195]:42325 "EHLO mail-pf0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751417AbeAEEe7 (ORCPT ); Thu, 4 Jan 2018 23:34:59 -0500 Received: by mail-pf0-f195.google.com with SMTP id d23so1750152pfe.9 for ; Thu, 04 Jan 2018 20:34:59 -0800 (PST) In-Reply-To: <151497517476.18176.6299242208330652860.stgit@firesoul> Content-Language: en-US Sender: netdev-owner@vger.kernel.org List-ID: On 01/03/2018 02:26 AM, Jesper Dangaard Brouer wrote: > Now all XDP driver have been updated to setup xdp_rxq_info and assign > this to xdp_buff->rxq. Thus, it is now safe to enable access to some > of the xdp_rxq_info struct members. > > This patch extend xdp_md and expose UAPI to userspace for > ingress_ifindex and rx_queue_index. Access happens via bpf > instruction rewrite, that load data directly from struct xdp_rxq_info. > > * ingress_ifindex map to xdp_rxq_info->dev->ifindex > * rx_queue_index map to xdp_rxq_info->queue_index > > Signed-off-by: Jesper Dangaard Brouer > Acked-by: Alexei Starovoitov > --- LGTM Acked-by: John Fastabend