From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26C88C43219 for ; Thu, 2 May 2019 08:39:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 009152075E for ; Thu, 2 May 2019 08:39:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726486AbfEBIj4 (ORCPT ); Thu, 2 May 2019 04:39:56 -0400 Received: from mga02.intel.com ([134.134.136.20]:64537 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726482AbfEBIj4 (ORCPT ); Thu, 2 May 2019 04:39:56 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 May 2019 01:39:56 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,421,1549958400"; d="scan'208";a="296322421" Received: from mkarlsso-mobl.ger.corp.intel.com (HELO VM.isw.intel.com) ([10.103.211.43]) by orsmga004.jf.intel.com with ESMTP; 02 May 2019 01:39:52 -0700 From: Magnus Karlsson To: magnus.karlsson@intel.com, bjorn.topel@intel.com, ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org, brouer@redhat.com Cc: bpf@vger.kernel.org, bruce.richardson@intel.com, ciara.loftus@intel.com, jakub.kicinski@netronome.com, xiaolong.ye@intel.com, qi.z.zhang@intel.com, maximmi@mellanox.com, sridhar.samudrala@intel.com, kevin.laatz@intel.com Subject: [RFC bpf-next 4/7] netdevice: introduce busy-poll setsockopt for AF_XDP Date: Thu, 2 May 2019 10:39:20 +0200 Message-Id: <1556786363-28743-5-git-send-email-magnus.karlsson@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1556786363-28743-1-git-send-email-magnus.karlsson@intel.com> References: <1556786363-28743-1-git-send-email-magnus.karlsson@intel.com> Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org This patch introduces a new setsockopt that enables busy-poll for XDP sockets. It is called XDP_BUSY_POLL_BATCH_SIZE and takes batch size as an argument. A value between 1 and NAPI_WEIGHT (64) will turn it on, 0 will turn it off and any other value will return an error. There is also a corresponding getsockopt implementation. Signed-off-by: Magnus Karlsson --- include/uapi/linux/if_xdp.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/if_xdp.h b/include/uapi/linux/if_xdp.h index caed8b1..be28a78 100644 --- a/include/uapi/linux/if_xdp.h +++ b/include/uapi/linux/if_xdp.h @@ -46,6 +46,7 @@ struct xdp_mmap_offsets { #define XDP_UMEM_FILL_RING 5 #define XDP_UMEM_COMPLETION_RING 6 #define XDP_STATISTICS 7 +#define XDP_BUSY_POLL_BATCH_SIZE 8 struct xdp_umem_reg { __u64 addr; /* Start of packet data area */ -- 2.7.4