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 23B6AC4320D for ; Tue, 24 Sep 2019 15:20:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F003C21783 for ; Tue, 24 Sep 2019 15:20:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="S+wgdPrL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732326AbfIXPUc (ORCPT ); Tue, 24 Sep 2019 11:20:32 -0400 Received: from mail-qk1-f195.google.com ([209.85.222.195]:39820 "EHLO mail-qk1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732277AbfIXPUb (ORCPT ); Tue, 24 Sep 2019 11:20:31 -0400 Received: by mail-qk1-f195.google.com with SMTP id 4so2165034qki.6; Tue, 24 Sep 2019 08:20:31 -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=6isa7u+Ujr1ueMUpo8eCINPWXfwol52ywCtO8hQl9tg=; b=S+wgdPrLyHrm/MmKiGYshhE0f/hjtoYVUg/3NfIemWa5eGM3rbea8o1Q25H/elEoM6 5Z2wnPbeITWcngOPRqh9D0rrMkg+cbAlWEXbS3BOfj4kuzppbHThIbW6R9ZPxGv0BKcK v0v0G/SlBQoLU7ZPONLDwUBWSPdqIkRqUnRndHkHR0uU/ksXHF3JYcsirDs0XpAB6omd nkczLG9I7+iQ5hauwd9LVfQqhd2/Y1vTqXSYzHnnrLN6CP42CeA8RCTeXbN+bhcJvvq3 jwM/DnfSR6RC2ZlvIN0Io6DTW7yQVYg2VMjJ0LuIdFAf5vQLAZPZgOvo7cB8VmdPUxni vR9Q== 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=6isa7u+Ujr1ueMUpo8eCINPWXfwol52ywCtO8hQl9tg=; b=lGy9UTSM48VH6k14q1f4vhQQ1algjsu9oFKm0dvBlXvI1eF7qmr6tSOmWKiIcgk6Xc BGQMi4NjPnHTx2HKfa86j9Yst/4tOgBljtwxOvKAYJb8QBEB8rmQebTq1URSAE2UQ8n8 ovhRepEvnIxIaWCdOcvnsSfMOUdRTsaLj6ZYkIkj8Lzi2tZA384DIfdfC/fvx86zU+Sn 9ql2g27k2U+QMV+MF1iA51RoMCDySgqFDQ063vCVR8ypSvkoj/TASy9Fbr29FzPCPNHk z2JG5oT8pyKXgb6g41C6MqjIUZ1rgTjalQK7cDGb9y0lkP3Tma73VL1mZioGy/TzlECn FvGg== X-Gm-Message-State: APjAAAXQbZ9clhA2GfjhwOIoDeacF2M+fh8Jxy8WFBUTdGVl1nvVJxbd P/JiH2k9wp/nenupYqCwC3JZNF5v1tk= X-Google-Smtp-Source: APXvYqy+w9U5G0Nu3h0TbjbAs7l5PeGJ/bycRExWT6gcPHwMcW381xiF+bcb+k7W1+Nxu+Ez9UFOOQ== X-Received: by 2002:a37:af81:: with SMTP id y123mr2973871qke.145.1569338430087; Tue, 24 Sep 2019 08:20:30 -0700 (PDT) Received: from ebpf00.byteswizards.com ([190.162.109.190]) by smtp.googlemail.com with ESMTPSA id h68sm1073533qkd.35.2019.09.24.08.20.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Sep 2019 08:20:29 -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 bpf-next v11 3/4] tools: Added bpf_get_ns_current_pid_tgid helper Date: Tue, 24 Sep 2019 12:20:04 -0300 Message-Id: <20190924152005.4659-4-cneirabustos@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190924152005.4659-1-cneirabustos@gmail.com> References: <20190924152005.4659-1-cneirabustos@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Signed-off-by: Carlos Neira --- tools/include/uapi/linux/bpf.h | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 77c6be96d676..9272dc8fb08c 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -2750,6 +2750,21 @@ union bpf_attr { * **-EOPNOTSUPP** kernel configuration does not enable SYN cookies * * **-EPROTONOSUPPORT** IP packet version is not 4 or 6 + * + * int bpf_get_ns_current_pid_tgid(u32 dev, u64 inum) + * Return + * A 64-bit integer containing the current tgid and pid from current task + * which namespace inode and dev_t matches , and is create as such: + * *current_task*\ **->tgid << 32 \|** + * *current_task*\ **->pid**. + * + * 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. + * + * **-ENOENT** if /proc/self/ns does not exists. + * */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \ @@ -2862,7 +2877,8 @@ 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 -- 2.20.1