From patchwork Fri Mar 4 17:28:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 12769625 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40EDDC43219 for ; Fri, 4 Mar 2022 17:31:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241128AbiCDRcF (ORCPT ); Fri, 4 Mar 2022 12:32:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241150AbiCDRcC (ORCPT ); Fri, 4 Mar 2022 12:32:02 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id A1D721D0375 for ; Fri, 4 Mar 2022 09:31:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1646415072; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rCz0m9X2qfcLrQ17iU+zBSGZpBuvHijRaj3zwrGqBqI=; b=JEE3gqzhQcp7GqD+fs0Z3KteQ97FJbVE884TFnd4X/0c/IJCZ+G0eoJu0ZYh4irjgj6BRZ kVxLKHuvFPW7D3RBoiSoJLFyJ1kbuKNLimaU6b9teIb53SABBlVXr2rQa0kKSpmti7n5bi WTJRrVLLjkxr+YQmrSloxgtiWlYcOW0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-377-ArT2qtWiMi2Tv-xsW-M3kQ-1; Fri, 04 Mar 2022 12:31:09 -0500 X-MC-Unique: ArT2qtWiMi2Tv-xsW-M3kQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id EF76518766D0; Fri, 4 Mar 2022 17:31:06 +0000 (UTC) Received: from plouf.redhat.com (unknown [10.39.192.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0126B86595; Fri, 4 Mar 2022 17:31:02 +0000 (UTC) From: Benjamin Tissoires To: Greg KH , Jiri Kosina , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Shuah Khan , Dave Marchevsky , Joe Stringer Cc: Tero Kristo , linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, Benjamin Tissoires Subject: [PATCH bpf-next v2 04/28] libbpf: add HID program type and API Date: Fri, 4 Mar 2022 18:28:28 +0100 Message-Id: <20220304172852.274126-5-benjamin.tissoires@redhat.com> In-Reply-To: <20220304172852.274126-1-benjamin.tissoires@redhat.com> References: <20220304172852.274126-1-benjamin.tissoires@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org HID-bpf program type are needing a new SEC. To bind a hid-bpf program, we can rely on bpf_program__attach_fd() so export a new function to the API. Signed-off-by: Benjamin Tissoires Acked-by: Song Liu --- changes in v2: - split the series by bpf/libbpf/hid/selftests and samples --- tools/lib/bpf/libbpf.c | 7 +++++++ tools/lib/bpf/libbpf.h | 2 ++ tools/lib/bpf/libbpf.map | 1 + 3 files changed, 10 insertions(+) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 81bf01d67671..356bbd3ad2c7 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -8680,6 +8680,7 @@ static const struct bpf_sec_def section_defs[] = { SEC_DEF("cgroup/setsockopt", CGROUP_SOCKOPT, BPF_CGROUP_SETSOCKOPT, SEC_ATTACHABLE | SEC_SLOPPY_PFX), SEC_DEF("struct_ops+", STRUCT_OPS, 0, SEC_NONE), SEC_DEF("sk_lookup", SK_LOOKUP, BPF_SK_LOOKUP, SEC_ATTACHABLE | SEC_SLOPPY_PFX), + SEC_DEF("hid/device_event", HID, BPF_HID_DEVICE_EVENT, SEC_ATTACHABLE_OPT | SEC_SLOPPY_PFX), }; #define MAX_TYPE_NAME_SIZE 32 @@ -10659,6 +10660,12 @@ static struct bpf_link *attach_iter(const struct bpf_program *prog, long cookie) return bpf_program__attach_iter(prog, NULL); } +struct bpf_link * +bpf_program__attach_hid(const struct bpf_program *prog, int hid_fd) +{ + return bpf_program__attach_fd(prog, hid_fd, 0, "hid"); +} + struct bpf_link *bpf_program__attach(const struct bpf_program *prog) { if (!prog->sec_def || !prog->sec_def->attach_fn) diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index c8d8daad212e..f677ac0a9ede 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -529,6 +529,8 @@ struct bpf_iter_attach_opts { LIBBPF_API struct bpf_link * bpf_program__attach_iter(const struct bpf_program *prog, const struct bpf_iter_attach_opts *opts); +LIBBPF_API struct bpf_link * +bpf_program__attach_hid(const struct bpf_program *prog, int hid_fd); /* * Libbpf allows callers to adjust BPF programs before being loaded diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 47e70c9058d9..fdc6fa743953 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -424,6 +424,7 @@ LIBBPF_0.6.0 { LIBBPF_0.7.0 { global: bpf_btf_load; + bpf_program__attach_hid; bpf_program__expected_attach_type; bpf_program__log_buf; bpf_program__log_level;