From patchwork Fri Oct 15 13:08:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 12561503 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92E21C433EF for ; Fri, 15 Oct 2021 13:10:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7EC8D60F9D for ; Fri, 15 Oct 2021 13:10:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239364AbhJONMo (ORCPT ); Fri, 15 Oct 2021 09:12:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:34518 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239358AbhJONMn (ORCPT ); Fri, 15 Oct 2021 09:12:43 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id BBDF161151; Fri, 15 Oct 2021 13:10:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1634303436; bh=y+VIQ6gYgEGg+yQtJUDCekJ1gmSJf3kzkfaDMO+CdMI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UgPq/X1wgcPYX+m5hpVZlHH8z1r/2X4ZIT0scdxtLsyTjsWIVAfGKBsgfb2TtQFi5 PlnSnxrkAc2zbyLrD+E8t9VBjUV7ziqFsT2+QFvL6KbT+fvcmBW4KQit64DdrbMcPb j9gCWopKxN4S1yJuLbTbnVb6sdUETZTYvZDlJS5kIxAX94Pg7HnIdDQ5pnTQVBt/1O KRXAlXWIcyYkwrt7KO8EH2WJ2/sRXI3OJmxmd4FzXzPlvqTDq82S9TdhQND/B8oYsD J3QwLldZ7oJ3ZSz4xC1pNKmOBJWMTcdgb1J0wFXsjw+g4dn9GwIpNr7vO/kQtcCsY0 s7jBAElPBao8A== From: Lorenzo Bianconi To: bpf@vger.kernel.org, netdev@vger.kernel.org Cc: lorenzo.bianconi@redhat.com, davem@davemloft.net, kuba@kernel.org, ast@kernel.org, daniel@iogearbox.net, shayagr@amazon.com, john.fastabend@gmail.com, dsahern@kernel.org, brouer@redhat.com, echaudro@redhat.com, jasowang@redhat.com, alexander.duyck@gmail.com, saeed@kernel.org, maciej.fijalkowski@intel.com, magnus.karlsson@intel.com, tirthendu.sarkar@intel.com, toke@redhat.com Subject: [PATCH v16 bpf-next 18/20] libbpf: Add SEC name for xdp_mb programs Date: Fri, 15 Oct 2021 15:08:55 +0200 Message-Id: <682d2fdae2f89e540377dfccee502b1e9dc2f0c4.1634301224.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net Introduce support SEC("xdp_mb") as a short cut for loading the program with type BPF_PROG_TYPE_XDP that fully supports XDP multi-buffer. Signed-off-by: Lorenzo Bianconi --- tools/lib/bpf/libbpf.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index ae0889bebe32..d5ae2716d08b 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -244,6 +244,8 @@ enum sec_def_flags { SEC_SLEEPABLE = 8, /* allow non-strict prefix matching */ SEC_SLOPPY_PFX = 16, + /* BPF program support XDP multi-buff */ + SEC_XDP_MB = 32, }; struct bpf_sec_def { @@ -6171,6 +6173,9 @@ static int libbpf_preload_prog(struct bpf_program *prog, if (def & SEC_SLEEPABLE) attr->prog_flags |= BPF_F_SLEEPABLE; + if (prog->type == BPF_PROG_TYPE_XDP && (def & SEC_XDP_MB)) + attr->prog_flags |= BPF_F_XDP_MB; + if ((prog->type == BPF_PROG_TYPE_TRACING || prog->type == BPF_PROG_TYPE_LSM || prog->type == BPF_PROG_TYPE_EXT) && !prog->attach_btf_id) { @@ -8094,6 +8099,7 @@ static const struct bpf_sec_def section_defs[] = { SEC_DEF("xdp_devmap/", XDP, BPF_XDP_DEVMAP, SEC_ATTACHABLE), SEC_DEF("xdp_cpumap/", XDP, BPF_XDP_CPUMAP, SEC_ATTACHABLE), SEC_DEF("xdp", XDP, BPF_XDP, SEC_ATTACHABLE_OPT | SEC_SLOPPY_PFX), + SEC_DEF("xdp_mb/", XDP, BPF_XDP, SEC_ATTACHABLE_OPT | SEC_SLOPPY_PFX | SEC_XDP_MB), SEC_DEF("perf_event", PERF_EVENT, 0, SEC_NONE | SEC_SLOPPY_PFX), SEC_DEF("lwt_in", LWT_IN, 0, SEC_NONE | SEC_SLOPPY_PFX), SEC_DEF("lwt_out", LWT_OUT, 0, SEC_NONE | SEC_SLOPPY_PFX),