From patchwork Tue Dec 31 06:20:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin KaFai Lau X-Patchwork-Id: 1216596 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=fb.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=fb.com header.i=@fb.com header.b="q5p3YLR3"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47n41R3N0gz9sQp for ; Tue, 31 Dec 2019 17:20:59 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726416AbfLaGUv (ORCPT ); Tue, 31 Dec 2019 01:20:51 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:14766 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726334AbfLaGUu (ORCPT ); Tue, 31 Dec 2019 01:20:50 -0500 Received: from pps.filterd (m0001303.ppops.net [127.0.0.1]) by m0001303.ppops.net (8.16.0.42/8.16.0.42) with SMTP id xBV6CP3G009032 for ; Mon, 30 Dec 2019 22:20:49 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=facebook; bh=M9EHpNrDr1lJ5Uo6eiTBlsMHkWM+vmH+MrEGGeU1TME=; b=q5p3YLR30IMRJp9aEm0q7JYEgFJI7iTY+kkfuqNpk74bn5xZs08wf8g5zPEuL6Tq3A6n zRDboupYcReRCmUK/NqOePZBLXkYv++/G4QDfFkcMGKYFbIT7zZte9xGH1m8rDkGfCA6 d3AWeJFtdMpePbNIMr3xcw6oofwk3yVb3ms= Received: from maileast.thefacebook.com ([163.114.130.16]) by m0001303.ppops.net with ESMTP id 2x63ks1ry6-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 30 Dec 2019 22:20:49 -0800 Received: from intmgw002.41.prn1.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::4) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Mon, 30 Dec 2019 22:20:48 -0800 Received: by devbig005.ftw2.facebook.com (Postfix, from userid 6611) id 0EB55294410B; Mon, 30 Dec 2019 22:20:44 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Martin KaFai Lau Smtp-Origin-Hostname: devbig005.ftw2.facebook.com To: CC: Alexei Starovoitov , Daniel Borkmann , David Miller , , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf-next v3 03/11] bpf: Add enum support to btf_ctx_access() Date: Mon, 30 Dec 2019 22:20:44 -0800 Message-ID: <20191231062044.281063-1-kafai@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191231062037.280596-1-kafai@fb.com> References: <20191231062037.280596-1-kafai@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95, 18.0.572 definitions=2019-12-30_08:2019-12-27, 2019-12-30 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 lowpriorityscore=0 clxscore=1015 suspectscore=13 phishscore=0 spamscore=0 adultscore=0 malwarescore=0 bulkscore=0 mlxscore=0 impostorscore=0 mlxlogscore=835 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912310050 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org It allows bpf prog (e.g. tracing) to attach to a kernel function that takes enum argument. Acked-by: Yonghong Song Signed-off-by: Martin KaFai Lau --- kernel/bpf/btf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c index 497ecf62d79d..6a5ccb748a72 100644 --- a/kernel/bpf/btf.c +++ b/kernel/bpf/btf.c @@ -3677,7 +3677,7 @@ bool btf_ctx_access(int off, int size, enum bpf_access_type type, /* skip modifiers */ while (btf_type_is_modifier(t)) t = btf_type_by_id(btf, t->type); - if (btf_type_is_int(t)) + if (btf_type_is_int(t) || btf_type_is_enum(t)) /* accessing a scalar */ return true; if (!btf_type_is_ptr(t)) {