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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 C76C5C5DF60 for ; Thu, 7 Nov 2019 17:48:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA46221882 for ; Thu, 7 Nov 2019 17:48:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389796AbfKGRrz (ORCPT ); Thu, 7 Nov 2019 12:47:55 -0500 Received: from mga03.intel.com ([134.134.136.65]:33465 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389788AbfKGRry (ORCPT ); Thu, 7 Nov 2019 12:47:54 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 07 Nov 2019 09:47:54 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,278,1569308400"; d="scan'208";a="353858409" Received: from unknown (HELO VM.jf.intel.com) ([10.78.3.78]) by orsmga004.jf.intel.com with ESMTP; 07 Nov 2019 09:47:54 -0800 From: Magnus Karlsson To: magnus.karlsson@intel.com, bjorn.topel@intel.com, ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org, jonathan.lemon@gmail.com, u9012063@gmail.com Cc: bpf@vger.kernel.org Subject: [PATCH bpf-next 3/5] libbpf: allow for creating Rx or Tx only AF_XDP sockets Date: Thu, 7 Nov 2019 18:47:38 +0100 Message-Id: <1573148860-30254-4-git-send-email-magnus.karlsson@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1573148860-30254-1-git-send-email-magnus.karlsson@intel.com> References: <1573148860-30254-1-git-send-email-magnus.karlsson@intel.com> Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org The libbpf AF_XDP code is extended to allow for the creation of Rx only or Tx only sockets. Previously it returned an error if the socket was not initialized for both Rx and Tx. Signed-off-by: Magnus Karlsson --- tools/lib/bpf/xsk.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/lib/bpf/xsk.c b/tools/lib/bpf/xsk.c index 8ebd810..303ed63 100644 --- a/tools/lib/bpf/xsk.c +++ b/tools/lib/bpf/xsk.c @@ -562,7 +562,8 @@ static int xsk_setup_xdp_prog(struct xsk_socket *xsk) } } - err = xsk_set_bpf_maps(xsk); + if (xsk->rx) + err = xsk_set_bpf_maps(xsk); if (err) { xsk_delete_bpf_maps(xsk); close(xsk->prog_fd); @@ -583,7 +584,7 @@ int xsk_socket__create(struct xsk_socket **xsk_ptr, const char *ifname, struct xsk_socket *xsk; int err; - if (!umem || !xsk_ptr || !rx || !tx) + if (!umem || !xsk_ptr || !(rx || tx)) return -EFAULT; xsk = calloc(1, sizeof(*xsk)); -- 2.7.4