From patchwork Sat May 8 22:08:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cong Wang X-Patchwork-Id: 432964 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 173C1C43470 for ; Sat, 8 May 2021 22:09:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0EA761400 for ; Sat, 8 May 2021 22:09:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229827AbhEHWKa (ORCPT ); Sat, 8 May 2021 18:10:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229823AbhEHWKZ (ORCPT ); Sat, 8 May 2021 18:10:25 -0400 Received: from mail-qk1-x731.google.com (mail-qk1-x731.google.com [IPv6:2607:f8b0:4864:20::731]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F213DC0613ED; Sat, 8 May 2021 15:09:22 -0700 (PDT) Received: by mail-qk1-x731.google.com with SMTP id a22so11529342qkl.10; Sat, 08 May 2021 15:09:22 -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=UjK9BI5v2k7+AWEzGv15pygYECWaieRAsq8bft/a118=; b=j282A9LNJNRRWHE1BDqbouxhjROqrAv58ihSFx3TLaoFrC+RQ3w8d5wk7fbDdn4wXF CK8Vx5CssJ+lRGtLsz5SljACbwV4ozSzqx367DXYFay+GPSTxH0qGR+KUcjawdDD/9+l aUHuHk0WoxqaWWip+WToW+bz1fKpxBnLZqYHqKORJO71jYJhssejCLX303cYmh+90afk +dI41NfTyxMtbt8QRmw38+tJmirhQjtzfsEftsep3xY3Xl2AnIgs0o+Y9rctygKes2s2 IWxV4e2EkJgUphG0i/E6gjGN4UKoAB4qAUtz8cR7xtXt0rCc2m/lZQTUfs/rHT2HTLnB exJw== 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=UjK9BI5v2k7+AWEzGv15pygYECWaieRAsq8bft/a118=; b=YxGsAszbK5IWEz1taW1FWoPFsM2AdUN5sUpOcOqRH89SI786Uj+wZaxhq6L9Tac46Q +ybYW7dwGcEYGk2qsvk5rjDm0hFI77P7OPfrMHBeamF92Oe6bOLBepxf3+000FqNXc4b MLs2mzc/3l9ZBXz29MEsfSh35Pl8GDt7vxooIVmy+Y8hPDcgzUEv/3knJIb+UM8nXdC0 G+J3UQbK2oSNIrjMiYjJCbkViE5ZwHFGwEYffvo9AXYTefpd532Y3VxRE+olaezleflu KtiFmtpURIdRP5HA5dz/HmWOga1esDViXOxG2wPZ30hizdBT1jVkx3ZimhgNNRxWwQSg TuuA== X-Gm-Message-State: AOAM53129G+G8UOoUXBHaszPX6rhTdgh62TCa0wELSSP2jS9HGbnXLJi QRe+838056ALVGiviUeDafft1f3IwgS63w== X-Google-Smtp-Source: ABdhPJyzBiJbTiPlfCeZSR+WAwXQLhdP7/YrNm/T7WZq6GN3la2TAZ3/AQgyLkzD0SQKLZNiQ/O8yA== X-Received: by 2002:a37:42c3:: with SMTP id p186mr16320219qka.352.1620511762082; Sat, 08 May 2021 15:09:22 -0700 (PDT) Received: from unknown.attlocal.net ([2600:1700:65a0:ab60:65fe:be14:6eed:46f]) by smtp.gmail.com with ESMTPSA id 189sm8080797qkd.51.2021.05.08.15.09.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 May 2021 15:09:21 -0700 (PDT) From: Cong Wang To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, jiang.wang@bytedance.com, duanxiongchun@bytedance.com, wangdongdong.6@bytedance.com, Cong Wang , John Fastabend , Daniel Borkmann , Jakub Sitnicki , Lorenz Bauer Subject: [Patch bpf-next v4 11/12] selftests/bpf: add a test case for unix sockmap Date: Sat, 8 May 2021 15:08:34 -0700 Message-Id: <20210508220835.53801-12-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210508220835.53801-1-xiyou.wangcong@gmail.com> References: <20210508220835.53801-1-xiyou.wangcong@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Cong Wang Add a test case to ensure redirection between two AF_UNIX datagram sockets work. Cc: John Fastabend Cc: Daniel Borkmann Cc: Jakub Sitnicki Cc: Lorenz Bauer Signed-off-by: Cong Wang --- .../selftests/bpf/prog_tests/sockmap_listen.c | 92 +++++++++++++++++++ 1 file changed, 92 insertions(+) diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c index ee017278fae4..2b1bdb8fa48d 100644 --- a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c +++ b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c @@ -1433,6 +1433,8 @@ static const char *family_str(sa_family_t family) return "IPv4"; case AF_INET6: return "IPv6"; + case AF_UNIX: + return "Unix"; default: return "unknown"; } @@ -1555,6 +1557,94 @@ static void test_redir(struct test_sockmap_listen *skel, struct bpf_map *map, } } +static void unix_redir_to_connected(int sotype, int sock_mapfd, + int verd_mapfd, enum redir_mode mode) +{ + const char *log_prefix = redir_mode_str(mode); + int c0, c1, p0, p1; + unsigned int pass; + int err, n; + int sfd[2]; + u32 key; + char b; + + zero_verdict_count(verd_mapfd); + + if (socketpair(AF_UNIX, sotype | SOCK_NONBLOCK, 0, sfd)) + return; + c0 = sfd[0], p0 = sfd[1]; + + if (socketpair(AF_UNIX, sotype | SOCK_NONBLOCK, 0, sfd)) + goto close0; + c1 = sfd[0], p1 = sfd[1]; + + err = add_to_sockmap(sock_mapfd, p0, p1); + if (err) + goto close; + + n = write(c1, "a", 1); + if (n < 0) + FAIL_ERRNO("%s: write", log_prefix); + if (n == 0) + FAIL("%s: incomplete write", log_prefix); + if (n < 1) + goto close; + + key = SK_PASS; + err = xbpf_map_lookup_elem(verd_mapfd, &key, &pass); + if (err) + goto close; + if (pass != 1) + FAIL("%s: want pass count 1, have %d", log_prefix, pass); + + n = read(mode == REDIR_INGRESS ? p0 : c0, &b, 1); + if (n < 0) + FAIL_ERRNO("%s: read", log_prefix); + if (n == 0) + FAIL("%s: incomplete read", log_prefix); + +close: + xclose(c1); + xclose(p1); +close0: + xclose(c0); + xclose(p0); +} + +static void unix_skb_redir_to_connected(struct test_sockmap_listen *skel, + struct bpf_map *inner_map, int sotype) +{ + int verdict = bpf_program__fd(skel->progs.prog_skb_verdict); + int verdict_map = bpf_map__fd(skel->maps.verdict_map); + int sock_map = bpf_map__fd(inner_map); + int err; + + err = xbpf_prog_attach(verdict, sock_map, BPF_SK_SKB_VERDICT, 0); + if (err) + return; + + skel->bss->test_ingress = false; + unix_redir_to_connected(sotype, sock_map, verdict_map, REDIR_EGRESS); + skel->bss->test_ingress = true; + unix_redir_to_connected(sotype, sock_map, verdict_map, REDIR_INGRESS); + + xbpf_prog_detach2(verdict, sock_map, BPF_SK_SKB_VERDICT); +} + +static void test_unix_redir(struct test_sockmap_listen *skel, struct bpf_map *map, + int sotype) +{ + const char *family_name, *map_name; + char s[MAX_TEST_NAME]; + + family_name = family_str(AF_UNIX); + map_name = map_type_str(map); + snprintf(s, sizeof(s), "%s %s %s", map_name, family_name, __func__); + if (!test__start_subtest(s)) + return; + unix_skb_redir_to_connected(skel, map, sotype); +} + static void test_reuseport(struct test_sockmap_listen *skel, struct bpf_map *map, int family, int sotype) { @@ -1747,10 +1837,12 @@ void test_sockmap_listen(void) skel->bss->test_sockmap = true; run_tests(skel, skel->maps.sock_map, AF_INET); run_tests(skel, skel->maps.sock_map, AF_INET6); + test_unix_redir(skel, skel->maps.sock_map, SOCK_DGRAM); skel->bss->test_sockmap = false; run_tests(skel, skel->maps.sock_hash, AF_INET); run_tests(skel, skel->maps.sock_hash, AF_INET6); + test_unix_redir(skel, skel->maps.sock_hash, SOCK_DGRAM); test_sockmap_listen__destroy(skel); }