From patchwork Wed Mar 4 10:13:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenz Bauer X-Patchwork-Id: 11419741 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 95EA7924 for ; Wed, 4 Mar 2020 10:14:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 66A7E217F4 for ; Wed, 4 Mar 2020 10:14:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=cloudflare.com header.i=@cloudflare.com header.b="FNoc6yBc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387900AbgCDKOK (ORCPT ); Wed, 4 Mar 2020 05:14:10 -0500 Received: from mail-lj1-f193.google.com ([209.85.208.193]:45832 "EHLO mail-lj1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387879AbgCDKN4 (ORCPT ); Wed, 4 Mar 2020 05:13:56 -0500 Received: by mail-lj1-f193.google.com with SMTP id e18so1325550ljn.12 for ; Wed, 04 Mar 2020 02:13:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloudflare.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HoFYtcPzLOdXmJSpnI9oxmsckwj1qwuaarNzyZTmmCM=; b=FNoc6yBcI0iOWEs0cGZA/m8HQQS9cbAwgS7+O7hEF+Myg/l8YHEPypzGN4344cAjOr ghXT/npMAvdWIRv8yDvWXCLzoQ8pDS7irO7LSoOrFu8FUM7gLg8S/xXFJFdStZqTruDb plWh5X8wKxQQvmxIo2h3L/bS8XONLQDVYcAlo= 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=HoFYtcPzLOdXmJSpnI9oxmsckwj1qwuaarNzyZTmmCM=; b=l/llrFtT0T6ENSNrcDNut+0eA/KOy/fLsqkmQ7CR9AHFDqwu6P7ao5kYXECJKPNf+X xOVcapEGLLledYCF9QmpYUxc5gJi9dR8hBwxhxY91xO0VOleGCPO2bthCXwBhJ5j5yhp Z3/OwTs1f14NYEzBTvNJqAnXMTOV8B4QYihTIgWY+ercfh3LEZLFg48e4yEYfeLkA2Qq s5GYSuHxEO2uQKpbrD2o0Jg7fiEsg2XKwwat1ciFaQyfCC/4hRKKBhy4OJPKZlzgLffc w4VwiTqqfbb8IAfhk90UfApCrnju+wG74vEbdFL/ePuWeD5R/BMfnzJaeBHmVsNgO9Ia g93A== X-Gm-Message-State: ANhLgQ0tSg0oIDMP+z2Cozq3O8sbS9nQxe3WPTE9HmkJBaegVxtds7rd E6N2kVkjUjadf7Wg9tBoeJVSlA== X-Google-Smtp-Source: ADFU+vu37RrYooJov6u/VGo2cC6f1E8UvJw8SfkA/np3TdtXlsWPDL34Y9ZqgA6DqV+CqJQMeqaMgA== X-Received: by 2002:a2e:9d92:: with SMTP id c18mr1589770ljj.265.1583316833422; Wed, 04 Mar 2020 02:13:53 -0800 (PST) Received: from localhost.localdomain ([176.221.114.230]) by smtp.gmail.com with ESMTPSA id l7sm341777lfk.65.2020.03.04.02.13.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Mar 2020 02:13:52 -0800 (PST) From: Lorenz Bauer To: john.fastabend@gmail.com, Shuah Khan , Alexei Starovoitov , Daniel Borkmann Cc: kernel-team@cloudflare.com, Lorenz Bauer , Jakub Sitnicki , linux-kselftest@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH bpf-next v3 10/12] selftests: bpf: add tests for UDP sockets in sockmap Date: Wed, 4 Mar 2020 11:13:15 +0100 Message-Id: <20200304101318.5225-11-lmb@cloudflare.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200304101318.5225-1-lmb@cloudflare.com> References: <20200304101318.5225-1-lmb@cloudflare.com> MIME-Version: 1.0 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Expand the TCP sockmap test suite to also check UDP sockets. Signed-off-by: Jakub Sitnicki Signed-off-by: Lorenz Bauer Acked-by: John Fastabend --- .../selftests/bpf/prog_tests/sockmap_listen.c | 157 ++++++++++++++---- 1 file changed, 127 insertions(+), 30 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c index 4ba41dd26d6b..52aa468bdccd 100644 --- a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c +++ b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c @@ -108,6 +108,22 @@ __ret; \ }) +#define xsend(fd, buf, len, flags) \ + ({ \ + ssize_t __ret = send((fd), (buf), (len), (flags)); \ + if (__ret == -1) \ + FAIL_ERRNO("send"); \ + __ret; \ + }) + +#define xrecv(fd, buf, len, flags) \ + ({ \ + ssize_t __ret = recv((fd), (buf), (len), (flags)); \ + if (__ret == -1) \ + FAIL_ERRNO("recv"); \ + __ret; \ + }) + #define xsocket(family, sotype, flags) \ ({ \ int __ret = socket(family, sotype, flags); \ @@ -330,7 +346,7 @@ static void test_insert_bound(int family, int sotype, int mapfd) xclose(s); } -static void test_insert_listening(int family, int sotype, int mapfd) +static void test_insert(int family, int sotype, int mapfd) { u64 value; u32 key; @@ -467,7 +483,7 @@ static void test_lookup_32_bit_value(int family, int sotype, int mapfd) xclose(s); } -static void test_update_listening(int family, int sotype, int mapfd) +static void test_update_existing(int family, int sotype, int mapfd) { int s1, s2; u64 value; @@ -1116,7 +1132,7 @@ static void test_reuseport_select_listening(int family, int sotype, { struct sockaddr_storage addr; unsigned int pass; - int s, c, p, err; + int s, c, err; socklen_t len; u64 value; u32 key; @@ -1145,19 +1161,33 @@ static void test_reuseport_select_listening(int family, int sotype, if (err) goto close_cli; - p = xaccept(s, NULL, NULL); - if (p < 0) - goto close_cli; + if (sotype == SOCK_STREAM) { + int p; + + p = xaccept(s, NULL, NULL); + if (p < 0) + goto close_cli; + xclose(p); + } else { + char b = 'a'; + ssize_t n; + + n = xsend(c, &b, sizeof(b), 0); + if (n == -1) + goto close_cli; + + n = xrecv(s, &b, sizeof(b), 0); + if (n == -1) + goto close_cli; + } key = SK_PASS; err = xbpf_map_lookup_elem(verd_map, &key, &pass); if (err) - goto close_peer; + goto close_cli; if (pass != 1) FAIL("want pass count 1, have %d", pass); -close_peer: - xclose(p); close_cli: xclose(c); close_srv: @@ -1201,9 +1231,24 @@ static void test_reuseport_select_connected(int family, int sotype, if (err) goto close_cli0; - p0 = xaccept(s, NULL, NULL); - if (err) - goto close_cli0; + if (sotype == SOCK_STREAM) { + p0 = xaccept(s, NULL, NULL); + if (p0 < 0) + goto close_cli0; + } else { + p0 = xsocket(family, sotype, 0); + if (p0 < 0) + goto close_cli0; + + len = sizeof(addr); + err = xgetsockname(c0, sockaddr(&addr), &len); + if (err) + goto close_cli0; + + err = xconnect(p0, sockaddr(&addr), len); + if (err) + goto close_cli0; + } /* Update sock_map[0] to redirect to a connected socket */ key = 0; @@ -1216,8 +1261,24 @@ static void test_reuseport_select_connected(int family, int sotype, if (c1 < 0) goto close_peer0; + len = sizeof(addr); + err = xgetsockname(s, sockaddr(&addr), &len); + if (err) + goto close_srv; + errno = 0; err = connect(c1, sockaddr(&addr), len); + if (sotype == SOCK_DGRAM) { + char b = 'a'; + ssize_t n; + + n = xsend(c1, &b, sizeof(b), 0); + if (n == -1) + goto close_cli1; + + n = recv(c1, &b, sizeof(b), 0); + err = n == -1; + } if (!err || errno != ECONNREFUSED) FAIL_ERRNO("connect: expected ECONNREFUSED"); @@ -1281,7 +1342,18 @@ static void test_reuseport_mixed_groups(int family, int sotype, int sock_map, goto close_srv2; err = connect(c, sockaddr(&addr), len); - if (err && errno != ECONNREFUSED) { + if (sotype == SOCK_DGRAM) { + char b = 'a'; + ssize_t n; + + n = xsend(c, &b, sizeof(b), 0); + if (n == -1) + goto close_cli; + + n = recv(c, &b, sizeof(b), 0); + err = n == -1; + } + if (!err || errno != ECONNREFUSED) { FAIL_ERRNO("connect: expected ECONNREFUSED"); goto close_cli; } @@ -1302,9 +1374,9 @@ static void test_reuseport_mixed_groups(int family, int sotype, int sock_map, xclose(s1); } -#define TEST(fn) \ +#define TEST(fn, ...) \ { \ - fn, #fn \ + fn, #fn, __VA_ARGS__ \ } static void test_ops_cleanup(const struct bpf_map *map) @@ -1353,18 +1425,31 @@ static const char *map_type_str(const struct bpf_map *map) } } +static const char *sotype_str(int sotype) +{ + switch (sotype) { + case SOCK_DGRAM: + return "UDP"; + case SOCK_STREAM: + return "TCP"; + default: + return "unknown"; + } +} + static void test_ops(struct test_sockmap_listen *skel, struct bpf_map *map, int family, int sotype) { const struct op_test { void (*fn)(int family, int sotype, int mapfd); const char *name; + int sotype; } tests[] = { /* insert */ TEST(test_insert_invalid), TEST(test_insert_opened), - TEST(test_insert_bound), - TEST(test_insert_listening), + TEST(test_insert_bound, SOCK_STREAM), + TEST(test_insert), /* delete */ TEST(test_delete_after_insert), TEST(test_delete_after_close), @@ -1373,28 +1458,32 @@ static void test_ops(struct test_sockmap_listen *skel, struct bpf_map *map, TEST(test_lookup_after_delete), TEST(test_lookup_32_bit_value), /* update */ - TEST(test_update_listening), + TEST(test_update_existing), /* races with insert/delete */ - TEST(test_destroy_orphan_child), - TEST(test_syn_recv_insert_delete), - TEST(test_race_insert_listen), + TEST(test_destroy_orphan_child, SOCK_STREAM), + TEST(test_syn_recv_insert_delete, SOCK_STREAM), + TEST(test_race_insert_listen, SOCK_STREAM), /* child clone */ - TEST(test_clone_after_delete), - TEST(test_accept_after_delete), - TEST(test_accept_before_delete), + TEST(test_clone_after_delete, SOCK_STREAM), + TEST(test_accept_after_delete, SOCK_STREAM), + TEST(test_accept_before_delete, SOCK_STREAM), }; - const char *family_name, *map_name; + const char *family_name, *map_name, *sotype_name; const struct op_test *t; char s[MAX_TEST_NAME]; int map_fd; family_name = family_str(family); map_name = map_type_str(map); + sotype_name = sotype_str(sotype); map_fd = bpf_map__fd(map); for (t = tests; t < tests + ARRAY_SIZE(tests); t++) { - snprintf(s, sizeof(s), "%s %s %s", map_name, family_name, - t->name); + snprintf(s, sizeof(s), "%s %s %s %s", map_name, family_name, + sotype_name, t->name); + + if (t->sotype != 0 && t->sotype != sotype) + continue; if (!test__start_subtest(s)) continue; @@ -1427,6 +1516,7 @@ static void test_redir(struct test_sockmap_listen *skel, struct bpf_map *map, for (t = tests; t < tests + ARRAY_SIZE(tests); t++) { snprintf(s, sizeof(s), "%s %s %s", map_name, family_name, t->name); + if (!test__start_subtest(s)) continue; @@ -1441,26 +1531,31 @@ static void test_reuseport(struct test_sockmap_listen *skel, void (*fn)(int family, int sotype, int socket_map, int verdict_map, int reuseport_prog); const char *name; + int sotype; } tests[] = { TEST(test_reuseport_select_listening), TEST(test_reuseport_select_connected), TEST(test_reuseport_mixed_groups), }; int socket_map, verdict_map, reuseport_prog; - const char *family_name, *map_name; + const char *family_name, *map_name, *sotype_name; const struct reuseport_test *t; char s[MAX_TEST_NAME]; family_name = family_str(family); map_name = map_type_str(map); + sotype_name = sotype_str(sotype); socket_map = bpf_map__fd(map); verdict_map = bpf_map__fd(skel->maps.verdict_map); reuseport_prog = bpf_program__fd(skel->progs.prog_reuseport); for (t = tests; t < tests + ARRAY_SIZE(tests); t++) { - snprintf(s, sizeof(s), "%s %s %s", map_name, family_name, - t->name); + snprintf(s, sizeof(s), "%s %s %s %s", map_name, family_name, + sotype_name, t->name); + + if (t->sotype != 0 && t->sotype != sotype) + continue; if (!test__start_subtest(s)) continue; @@ -1473,8 +1568,10 @@ static void run_tests(struct test_sockmap_listen *skel, struct bpf_map *map, int family) { test_ops(skel, map, family, SOCK_STREAM); + test_ops(skel, map, family, SOCK_DGRAM); test_redir(skel, map, family, SOCK_STREAM); test_reuseport(skel, map, family, SOCK_STREAM); + test_reuseport(skel, map, family, SOCK_DGRAM); } void test_sockmap_listen(void)