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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 4270CECE58E for ; Wed, 9 Oct 2019 15:26:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1BA0720679 for ; Wed, 9 Oct 2019 15:26:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="GymUyy+u" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731679AbfJIP0x (ORCPT ); Wed, 9 Oct 2019 11:26:53 -0400 Received: from mail-qt1-f195.google.com ([209.85.160.195]:40661 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729644AbfJIP0w (ORCPT ); Wed, 9 Oct 2019 11:26:52 -0400 Received: by mail-qt1-f195.google.com with SMTP id m61so3975158qte.7; Wed, 09 Oct 2019 08:26:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=CLlmsJf3ShLtGT0uefsGsqKyq1wDjDG1ATRu3k+5ehM=; b=GymUyy+uyrs6IokUbSZ9lSqhiUT6NLjqevsaEoHoACjj0NAjmJT/5oPHhbUAMIGazS 8BQ7c02FRNwp5k+PUvWlRLmsQt5yd9+89s7if5X2WNUyCL21ugw8lOPQZDffXB6EXUhj JmFjsJyBppCgAQv4p6TsJQu/RbJZMJy/3gnGgs8nyHdZqon58odCNjJxg9ZIlfiYCnK/ m0hzQLufv4JzcEUEoVL7IZARxjpMbYF8lZnJjIFFXpbIV47tOF72ZBJq8Q75XG5ldHfO UY6pT+Uj1IfZCvN5H7I1CGaDcfuVXnniiG//ZA4OR8jrY4ommLMD7GBEdkHwrGKaEQKo gUiA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=CLlmsJf3ShLtGT0uefsGsqKyq1wDjDG1ATRu3k+5ehM=; b=YcsvReI78ToTu18DaS4rTtUdqmNrEYR6YXjD3jteuEGfpEfOjjyQAdgMqk8UCrp7xa DmQz/wRPwpN4pQrmyWf9oCar8LkmJixCZMdwKL6c/Kf9ZJbdnAAyV3v1WbdTn3sUeUi9 zu6YIToDuLa2NGgH0fPjfcTkO2C2oeWt5nMk5ey5um1XxeiMfj9wBnaQF2sQS6I/zBrW 5pM9wbL+UnHtKGmOIQWMK6CFhmzwNFAqzJ5UVHrI0qQtDxRzAfFN70OY+i10QNxjsKTt v6J57dt18DH+k9V/pLMEZ2b1MesSLfuR2MS+c3l+kyJD5pyEt9sHBOkeMzehp2ZYredp WpIw== X-Gm-Message-State: APjAAAX8R9+fMdI2JDwH9gvNtwET8MXKHLnLlVqQDNoYDzlr4IJbr9C2 AQtTBxOxhiN5y0p6bOzF5DV8E9LZ740= X-Google-Smtp-Source: APXvYqyv6+LY6ht60gQh7/CmqS05Q2eW8+mc1z1lfGIJNMoYbqsKilZb1ji255d9Bhioysb7Uj421g== X-Received: by 2002:ac8:750d:: with SMTP id u13mr4286544qtq.129.1570634809338; Wed, 09 Oct 2019 08:26:49 -0700 (PDT) Received: from ebpf00.byteswizards.com ([190.162.109.190]) by smtp.googlemail.com with ESMTPSA id l189sm1049895qke.69.2019.10.09.08.26.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Oct 2019 08:26:48 -0700 (PDT) From: Carlos Neira To: netdev@vger.kernel.org Cc: yhs@fb.com, ebiederm@xmission.com, brouer@redhat.com, bpf@vger.kernel.org, cneirabustos@gmail.com Subject: [PATCH v13 3/4] tools: Added bpf_get_ns_current_pid_tgid helper Date: Wed, 9 Oct 2019 12:26:31 -0300 Message-Id: <20191009152632.14218-4-cneirabustos@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191009152632.14218-1-cneirabustos@gmail.com> References: <20191009152632.14218-1-cneirabustos@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org sync tools/include/uapi/linux/bpf.h to include new helper. Signed-off-by: Carlos Neira --- tools/include/uapi/linux/bpf.h | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 77c6be96d676..6ad3f2abf00d 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -2750,6 +2750,19 @@ union bpf_attr { * **-EOPNOTSUPP** kernel configuration does not enable SYN cookies * * **-EPROTONOSUPPORT** IP packet version is not 4 or 6 + * + * u64 bpf_get_ns_current_pid_tgid(struct *bpf_pidns_info, u32 size) + * Return + * 0 on success, values for pid and tgid from nsinfo will be as seen + * from the namespace that matches dev and inum from nsinfo. + * + * On failure, the returned value is one of the following: + * + * **-EINVAL** if dev and inum supplied don't match dev_t and inode number + * with nsfs of current task, or if dev conversion to dev_t lost high bits. + * + * **-ENOENT** if /proc/self/ns does not exists. + * */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -2862,7 +2875,8 @@ union bpf_attr { FN(sk_storage_get), \ FN(sk_storage_delete), \ FN(send_signal), \ - FN(tcp_gen_syncookie), + FN(tcp_gen_syncookie), \ + FN(get_ns_current_pid_tgid), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call @@ -3613,4 +3627,10 @@ struct bpf_sockopt { __s32 retval; }; +struct bpf_pidns_info { + __u64 dev; + __u64 inum; + __u32 pid; + __u32 tgid; +}; #endif /* _UAPI__LINUX_BPF_H__ */ -- 2.20.1