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=-17.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL 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 12285ECE588 for ; Tue, 15 Oct 2019 18:31:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D9D8C20854 for ; Tue, 15 Oct 2019 18:31:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="lGBifvcu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730365AbfJOSbb (ORCPT ); Tue, 15 Oct 2019 14:31:31 -0400 Received: from mail-vk1-f202.google.com ([209.85.221.202]:34772 "EHLO mail-vk1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726343AbfJOSba (ORCPT ); Tue, 15 Oct 2019 14:31:30 -0400 Received: by mail-vk1-f202.google.com with SMTP id b11so5633441vkn.1 for ; Tue, 15 Oct 2019 11:31:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=CmKa1agNJrPbYf7wPjFa61AdTdkKzngqPFR94jGBSQo=; b=lGBifvcuX1cVexaA5gZeOPCnRsCalHgm2qQisbsa0dHr3aedYyrsUnNUBHWZoNeTRD WQYNEKanf5y+qnqLraviO6anBsvYHr1pkVVAD1o0Rg/lbky8a+e+VhbWrhdp1z4i0fn0 NqOcPc5nFQYY+4DoccufQTECeEHuJMUknxF0OBdJK45KLs1btsCRZ46L15pEnT1Vyx5u aGNsukzP+FMvxatv2FyNJ+BU0JFm0a72aswjLKcyMMTIZOd8us3QRvRSvi60RY9gJqEg lDrQmJZ69noIRgmZhydKG3X2uXYyj5Onc01FCkaQkvBnojPcAMAPvtj5ULC/+b1L2BM2 UnpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=CmKa1agNJrPbYf7wPjFa61AdTdkKzngqPFR94jGBSQo=; b=p2PdtZSB6Vxvz5eTc3n8E26B/U/niFTyz35ik9N8kgQ5Axlq0mTV3OIG8p3lepTdnb mOJ4WDrb5tPU3BQnBCNRgZOpq81pXxR4CccW2azviFcWKzY9W7lqlITZYjt9sgfzt8p0 fuwIbGa1pLJlaeapFNDFFqphOpHxodDdI4VmhrNqNx1l4ZPwG00Bax5tsKPGvYyE9BF/ aOOO25FHz9iFQxzegrZ48i4UQRyjm7Bt1/xk4LFAqU2YWi12cd1PAx8VbKYl+z00yD5b CXFPPswg/zB8cpJd7KGsTXMwG2xkXwt9aJ85asCauMxVyWB785IYlmwrddfrl3yfF0xV SZzw== X-Gm-Message-State: APjAAAWdOYb3USSdCYUr2bF509fO4jf4J+cYHnLo5VElOFAYEOVmpZxl z/2UXEGxB5boGyFgcWn/Xo6LDdTK7ZjCDy2eFb5hNZE4UU7xbSRAAIdyGYzGCExtJBAd/GER5cY ufrohL4crjGk+Z8lSrvET7iE6pmqQv83wOcrK5Lav0Dr+aUOMLK5o+A== X-Google-Smtp-Source: APXvYqwFHz820XERQXeDopog7LjIac4wUp2RN27ZKfNOfcZumQKKktikhSc5kB/vwR++lltOP6L5znU= X-Received: by 2002:a1f:b658:: with SMTP id g85mr19707472vkf.52.1571164288130; Tue, 15 Oct 2019 11:31:28 -0700 (PDT) Date: Tue, 15 Oct 2019 11:31:24 -0700 Message-Id: <20191015183125.124413-1-sdf@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.23.0.700.g56cf767bdb-goog Subject: [PATCH bpf-next 1/2] bpf: allow __sk_buff tstamp in BPF_PROG_TEST_RUN From: Stanislav Fomichev To: netdev@vger.kernel.org, bpf@vger.kernel.org Cc: davem@davemloft.net, ast@kernel.org, daniel@iogearbox.net, Stanislav Fomichev Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org It's useful for implementing EDT related tests (set tstamp, run the test, see how the tstamp is changed or observe some other parameter). Note that bpf_ktime_get_ns() helper is using monotonic clock, so for the BPF programs that compare tstamp against it, tstamp should be derived from clock_gettime(CLOCK_MONOTONIC, ...). Signed-off-by: Stanislav Fomichev --- net/bpf/test_run.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c index 1153bbcdff72..0be4497cb832 100644 --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -218,10 +218,18 @@ static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb) if (!range_is_zero(__skb, offsetof(struct __sk_buff, cb) + FIELD_SIZEOF(struct __sk_buff, cb), + offsetof(struct __sk_buff, tstamp))) + return -EINVAL; + + /* tstamp is allowed */ + + if (!range_is_zero(__skb, offsetof(struct __sk_buff, tstamp) + + FIELD_SIZEOF(struct __sk_buff, tstamp), sizeof(struct __sk_buff))) return -EINVAL; skb->priority = __skb->priority; + skb->tstamp = __skb->tstamp; memcpy(&cb->data, __skb->cb, QDISC_CB_PRIV_LEN); return 0; @@ -235,6 +243,7 @@ static void convert_skb_to___skb(struct sk_buff *skb, struct __sk_buff *__skb) return; __skb->priority = skb->priority; + __skb->tstamp = skb->tstamp; memcpy(__skb->cb, &cb->data, QDISC_CB_PRIV_LEN); } -- 2.23.0.700.g56cf767bdb-goog