From nobody Sat May 18 18:27:42 2024 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 46A632C18D; Tue, 2 Apr 2024 06:38:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712039929; cv=none; b=QeeLQPF0cBBvQHNxXeJJLstcn1BuTpIQlaJmXRGcVtw/nzEJKveg/kTyJ73Q+XzRExjFR6AJw/ElJAPk9UFADoXTWeal7/hBFPTR3Iqv/niiP16ZZ13wYrruEcrB4D0aur/rhqA//qHmpVDVVaTXHXR/jLQtosfdSClk0zP1uAg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712039929; c=relaxed/simple; bh=07FqalDjY1f8ndnRBogLUbwQJZBS1p4FrrU/ZXVSbH4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=SOuR4zr/W60YVVe3u7TeHqLWcE7jhEIp9Dn1c78BTPdB8HCOxYxg1y/aOMvVtGAi4U3+xtRQ55sjblBMEaZttUrhdxqOPc0nmAdc9liFfF1xIqo5FFY1+0urU4Cg+0OIQlGNQpT9Bp4YR2WxJmGJo9uoeMmXHf8xpaggQNsE/AY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qUMVw03A; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qUMVw03A" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C3BBEC433F1; Tue, 2 Apr 2024 06:38:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712039928; bh=07FqalDjY1f8ndnRBogLUbwQJZBS1p4FrrU/ZXVSbH4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qUMVw03AH4opNHDI5JCOELrs0SDEdJJoO/HspKh6/ZtAyKpd2KcrcKeud3OmumcZm 04ybroCvLoClh6SVIJPMRTwd+J/RrD7tqFAymOy6vMiZnS8aJKS2PO9KIQdIZp/qMv Q2gDJGzsZFBlVbaGR+P7ZmGvovBX/0YFHWIaPw4ucDcGG6VJv1Gkr6l6o9HXvKj2e8 RDUkZcmy0IcCPIMNnpvQaF+ALpvJ6x2gKfg4IyJ8K5qZg+TrMYF0lLMTDaJ8Wb8k+z gVnyNhz5SeXcm6hrzvI3tAmURlkY3TiegBEO4+YSWf8PnXdSX5b02fOqt+Skf2Pqt0 zpD8vZSU31YMQ== From: Geliang Tang To: Andrii Nakryiko , Eduard Zingerman , Mykola Lysenko , Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Shuah Khan Cc: Geliang Tang , bpf@vger.kernel.org, mptcp@lists.linux.dev Subject: [PATCH bpf-next 1/3] selftests/bpf: Export send_byte helper Date: Tue, 2 Apr 2024 14:38:27 +0800 Message-Id: <4daa40f84a7b9e506bb21c4dcbccdcf1db8fc750.1712039441.git.tanggeliang@kylinos.cn> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Geliang Tang The helper send_byte is defined in mptcp.c, sk_lookup.c and tcp_rtt.c. It makes sense to export it into network_helpers.h to let it can be used for all BPF selftests. Signed-off-by: Geliang Tang --- tools/testing/selftests/bpf/network_helpers.c | 9 +++++++++ tools/testing/selftests/bpf/network_helpers.h | 1 + tools/testing/selftests/bpf/prog_tests/mptcp.c | 7 ------- tools/testing/selftests/bpf/prog_tests/sk_lookup.c | 13 ------------- tools/testing/selftests/bpf/prog_tests/tcp_rtt.c | 7 ------- 5 files changed, 10 insertions(+), 27 deletions(-) diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/= selftests/bpf/network_helpers.c index 6db27a9088e9..f2f8f7388d7c 100644 --- a/tools/testing/selftests/bpf/network_helpers.c +++ b/tools/testing/selftests/bpf/network_helpers.c @@ -497,3 +497,12 @@ int get_socket_local_port(int sock_fd) =20 return -1; } + +int send_byte(int fd) +{ + char b =3D 0x55; + + if (!ASSERT_EQ(write(fd, &b, sizeof(b)), 1, "send single byte")) + return -1; + return 0; +} diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/= selftests/bpf/network_helpers.h index 94b9be24e39b..d7ee2857093c 100644 --- a/tools/testing/selftests/bpf/network_helpers.h +++ b/tools/testing/selftests/bpf/network_helpers.h @@ -71,6 +71,7 @@ struct nstoken; */ struct nstoken *open_netns(const char *name); void close_netns(struct nstoken *token); +int send_byte(int fd); =20 static __u16 csum_fold(__u32 csum) { diff --git a/tools/testing/selftests/bpf/prog_tests/mptcp.c b/tools/testing= /selftests/bpf/prog_tests/mptcp.c index 8f8d792307c1..bff13ecec64c 100644 --- a/tools/testing/selftests/bpf/prog_tests/mptcp.c +++ b/tools/testing/selftests/bpf/prog_tests/mptcp.c @@ -225,13 +225,6 @@ static void test_base(void) close(cgroup_fd); } =20 -static void send_byte(int fd) -{ - char b =3D 0x55; - - ASSERT_EQ(write(fd, &b, sizeof(b)), 1, "send single byte"); -} - static int verify_mptcpify(int server_fd, int client_fd) { struct __mptcp_info info; diff --git a/tools/testing/selftests/bpf/prog_tests/sk_lookup.c b/tools/tes= ting/selftests/bpf/prog_tests/sk_lookup.c index 597d0467a926..b4310a5ec1a4 100644 --- a/tools/testing/selftests/bpf/prog_tests/sk_lookup.c +++ b/tools/testing/selftests/bpf/prog_tests/sk_lookup.c @@ -282,19 +282,6 @@ static int fill_sk_lookup_ctx(struct bpf_sk_lookup *ct= x, const char *local_ip, _ return 0; } =20 -static int send_byte(int fd) -{ - ssize_t n; - - errno =3D 0; - n =3D send(fd, "a", 1, 0); - if (CHECK(n <=3D 0, "send_byte", "send")) { - log_err("failed/partial send"); - return -1; - } - return 0; -} - static int recv_byte(int fd) { char buf[1]; diff --git a/tools/testing/selftests/bpf/prog_tests/tcp_rtt.c b/tools/testi= ng/selftests/bpf/prog_tests/tcp_rtt.c index 8fe84da1b9b4..dcb2d5e9c8db 100644 --- a/tools/testing/selftests/bpf/prog_tests/tcp_rtt.c +++ b/tools/testing/selftests/bpf/prog_tests/tcp_rtt.c @@ -12,13 +12,6 @@ struct tcp_rtt_storage { __u32 icsk_retransmits; }; =20 -static void send_byte(int fd) -{ - char b =3D 0x55; - - ASSERT_EQ(write(fd, &b, sizeof(b)), 1, "send single byte"); -} - static int wait_for_ack(int fd, int retries) { struct tcp_info info; --=20 2.40.1 From nobody Sat May 18 18:27:42 2024 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A266A21A0A; 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charset="utf-8" From: Geliang Tang Avoid setting total_bytes and stop as global variables, this patch adds a new struct named send_recv_arg to pass arguments between threads. Put these two variables together with fd into this struct and pass it to server thread, so that server thread can access these two variables without setting them as global ones. Signed-off-by: Geliang Tang --- .../selftests/bpf/prog_tests/bpf_tcp_ca.c | 33 ++++++++++++------- 1 file changed, 22 insertions(+), 11 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c b/tools/te= sting/selftests/bpf/prog_tests/bpf_tcp_ca.c index 077b107130f6..a1f0a2b06489 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c @@ -21,7 +21,6 @@ =20 static const unsigned int total_bytes =3D 10 * 1024 * 1024; static int expected_stg =3D 0xeB9F; -static int stop; =20 static int settcpca(int fd, const char *tcp_ca) { @@ -34,13 +33,20 @@ static int settcpca(int fd, const char *tcp_ca) return 0; } =20 +struct send_recv_arg { + int fd; + uint32_t bytes; + int stop; +}; + static void *server(void *arg) { - int lfd =3D (int)(long)arg, err =3D 0, fd; + struct send_recv_arg *a =3D (struct send_recv_arg *)arg; ssize_t nr_sent =3D 0, bytes =3D 0; char batch[1500]; + int err =3D 0, fd; =20 - fd =3D accept(lfd, NULL, NULL); + fd =3D accept(a->fd, NULL, NULL); while (fd =3D=3D -1) { if (errno =3D=3D EINTR) continue; @@ -53,9 +59,9 @@ static void *server(void *arg) goto done; } =20 - while (bytes < total_bytes && !READ_ONCE(stop)) { + while (bytes < a->bytes && !READ_ONCE(a->stop)) { nr_sent =3D send(fd, &batch, - MIN(total_bytes - bytes, sizeof(batch)), 0); + MIN(a->bytes - bytes, sizeof(batch)), 0); if (nr_sent =3D=3D -1 && errno =3D=3D EINTR) continue; if (nr_sent =3D=3D -1) { @@ -65,13 +71,13 @@ static void *server(void *arg) bytes +=3D nr_sent; } =20 - ASSERT_EQ(bytes, total_bytes, "send"); + ASSERT_EQ(bytes, a->bytes, "send"); =20 done: if (fd >=3D 0) close(fd); if (err) { - WRITE_ONCE(stop, 1); + WRITE_ONCE(a->stop, 1); return ERR_PTR(err); } return NULL; @@ -80,18 +86,23 @@ static void *server(void *arg) static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map) { ssize_t nr_recv =3D 0, bytes =3D 0; + struct send_recv_arg arg =3D { + .bytes =3D total_bytes, + }; int lfd =3D -1, fd =3D -1; pthread_t srv_thread; void *thread_ret; char batch[1500]; int err; =20 - WRITE_ONCE(stop, 0); + WRITE_ONCE(arg.stop, 0); =20 lfd =3D start_server(AF_INET6, SOCK_STREAM, NULL, 0, 0); if (!ASSERT_NEQ(lfd, -1, "socket")) return; =20 + arg.fd =3D lfd; + fd =3D socket(AF_INET6, SOCK_STREAM, 0); if (!ASSERT_NEQ(fd, -1, "socket")) { close(lfd); @@ -123,12 +134,12 @@ static void do_test(const char *tcp_ca, const struct = bpf_map *sk_stg_map) goto done; } =20 - err =3D pthread_create(&srv_thread, NULL, server, (void *)(long)lfd); + err =3D pthread_create(&srv_thread, NULL, server, (void *)&arg); if (!ASSERT_OK(err, "pthread_create")) goto done; =20 /* recv total_bytes */ - while (bytes < total_bytes && !READ_ONCE(stop)) { + while (bytes < total_bytes && !READ_ONCE(arg.stop)) { nr_recv =3D recv(fd, &batch, MIN(total_bytes - bytes, sizeof(batch)), 0); if (nr_recv =3D=3D -1 && errno =3D=3D EINTR) @@ -140,7 +151,7 @@ static void do_test(const char *tcp_ca, const struct bp= f_map *sk_stg_map) =20 ASSERT_EQ(bytes, total_bytes, "recv"); =20 - WRITE_ONCE(stop, 1); + WRITE_ONCE(arg.stop, 1); pthread_join(srv_thread, &thread_ret); ASSERT_OK(IS_ERR(thread_ret), "thread_ret"); =20 --=20 2.40.1 From nobody Sat May 18 18:27:42 2024 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1FE1824A04; Tue, 2 Apr 2024 06:38:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712039938; cv=none; b=n68qTvVwibVTyQVnN4NKzGAfqwaowyf4zuNm7H1I3a+z12MhD0kBbMc9DaVMsAo8EDtU9I4rPL9z35LSXcTA1zGhXOgGKZEVBHHLJSF++eze7gIyi1ExV0dhmdWhNzIxaYh/2YUqxzEffXRkn5+nccn4BnBejAVTpFBuagr603I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712039938; c=relaxed/simple; bh=dQ6UzsnbxvYjXDXrHLCAD2HM5t7PTpJkoPIVrOnan6o=; 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charset="utf-8" From: Geliang Tang This patch extracts the code to send and receive data into a new helper named send_recv_data() in network_helpers.c and export it in network_helpers.h. This helper will be used for MPTCP BPF selftests. Signed-off-by: Geliang Tang --- tools/testing/selftests/bpf/network_helpers.c | 86 +++++++++++++++++++ tools/testing/selftests/bpf/network_helpers.h | 1 + .../selftests/bpf/prog_tests/bpf_tcp_ca.c | 82 +----------------- 3 files changed, 88 insertions(+), 81 deletions(-) diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/= selftests/bpf/network_helpers.c index f2f8f7388d7c..9878d8072e7f 100644 --- a/tools/testing/selftests/bpf/network_helpers.c +++ b/tools/testing/selftests/bpf/network_helpers.c @@ -506,3 +506,89 @@ int send_byte(int fd) return -1; return 0; } + +struct send_recv_arg { + int fd; + uint32_t bytes; + int stop; +}; + +static void *send_recv_server(void *arg) +{ + struct send_recv_arg *a =3D (struct send_recv_arg *)arg; + ssize_t nr_sent =3D 0, bytes =3D 0; + char batch[1500]; + int err =3D 0, fd; + + fd =3D accept(a->fd, NULL, NULL); + while (fd =3D=3D -1) { + if (errno =3D=3D EINTR) + continue; + err =3D -errno; + goto done; + } + + if (settimeo(fd, 0)) { + err =3D -errno; + goto done; + } + + while (bytes < a->bytes && !READ_ONCE(a->stop)) { + nr_sent =3D send(fd, &batch, + MIN(a->bytes - bytes, sizeof(batch)), 0); + if (nr_sent =3D=3D -1 && errno =3D=3D EINTR) + continue; + if (nr_sent =3D=3D -1) { + err =3D -errno; + break; + } + bytes +=3D nr_sent; + } + + ASSERT_EQ(bytes, a->bytes, "send"); + +done: + if (fd >=3D 0) + close(fd); + if (err) { + WRITE_ONCE(a->stop, 1); + return ERR_PTR(err); + } + return NULL; +} + +void send_recv_data(int lfd, int fd, uint32_t total_bytes) +{ + ssize_t nr_recv =3D 0, bytes =3D 0; + struct send_recv_arg arg =3D { + .fd =3D lfd, + .bytes =3D total_bytes, + }; + pthread_t srv_thread; + void *thread_ret; + char batch[1500]; + int err; + + WRITE_ONCE(arg.stop, 0); + + err =3D pthread_create(&srv_thread, NULL, send_recv_server, (void *)&arg); + if (!ASSERT_OK(err, "pthread_create")) + return; + + /* recv total_bytes */ + while (bytes < total_bytes && !READ_ONCE(arg.stop)) { + nr_recv =3D recv(fd, &batch, + MIN(total_bytes - bytes, sizeof(batch)), 0); + if (nr_recv =3D=3D -1 && errno =3D=3D EINTR) + continue; + if (nr_recv =3D=3D -1) + break; + bytes +=3D nr_recv; + } + + ASSERT_EQ(bytes, total_bytes, "recv"); + + WRITE_ONCE(arg.stop, 1); + pthread_join(srv_thread, &thread_ret); + ASSERT_OK(IS_ERR(thread_ret), "thread_ret"); +} diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/= selftests/bpf/network_helpers.h index d7ee2857093c..e66ed7b68c4d 100644 --- a/tools/testing/selftests/bpf/network_helpers.h +++ b/tools/testing/selftests/bpf/network_helpers.h @@ -72,6 +72,7 @@ struct nstoken; struct nstoken *open_netns(const char *name); void close_netns(struct nstoken *token); int send_byte(int fd); +void send_recv_data(int lfd, int fd, uint32_t total_bytes); =20 static __u16 csum_fold(__u32 csum) { diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c b/tools/te= sting/selftests/bpf/prog_tests/bpf_tcp_ca.c index a1f0a2b06489..3f822100c2b3 100644 --- a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c +++ b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c @@ -33,76 +33,15 @@ static int settcpca(int fd, const char *tcp_ca) return 0; } =20 -struct send_recv_arg { - int fd; - uint32_t bytes; - int stop; -}; - -static void *server(void *arg) -{ - struct send_recv_arg *a =3D (struct send_recv_arg *)arg; - ssize_t nr_sent =3D 0, bytes =3D 0; - char batch[1500]; - int err =3D 0, fd; - - fd =3D accept(a->fd, NULL, NULL); - while (fd =3D=3D -1) { - if (errno =3D=3D EINTR) - continue; - err =3D -errno; - goto done; - } - - if (settimeo(fd, 0)) { - err =3D -errno; - goto done; - } - - while (bytes < a->bytes && !READ_ONCE(a->stop)) { - nr_sent =3D send(fd, &batch, - MIN(a->bytes - bytes, sizeof(batch)), 0); - if (nr_sent =3D=3D -1 && errno =3D=3D EINTR) - continue; - if (nr_sent =3D=3D -1) { - err =3D -errno; - break; - } - bytes +=3D nr_sent; - } - - ASSERT_EQ(bytes, a->bytes, "send"); - -done: - if (fd >=3D 0) - close(fd); - if (err) { - WRITE_ONCE(a->stop, 1); - return ERR_PTR(err); - } - return NULL; -} - static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map) { - ssize_t nr_recv =3D 0, bytes =3D 0; - struct send_recv_arg arg =3D { - .bytes =3D total_bytes, - }; int lfd =3D -1, fd =3D -1; - pthread_t srv_thread; - void *thread_ret; - char batch[1500]; int err; =20 - WRITE_ONCE(arg.stop, 0); - lfd =3D start_server(AF_INET6, SOCK_STREAM, NULL, 0, 0); if (!ASSERT_NEQ(lfd, -1, "socket")) return; =20 - arg.fd =3D lfd; - fd =3D socket(AF_INET6, SOCK_STREAM, 0); if (!ASSERT_NEQ(fd, -1, "socket")) { close(lfd); @@ -134,26 +73,7 @@ static void do_test(const char *tcp_ca, const struct bp= f_map *sk_stg_map) goto done; } =20 - err =3D pthread_create(&srv_thread, NULL, server, (void *)&arg); - if (!ASSERT_OK(err, "pthread_create")) - goto done; - - /* recv total_bytes */ - while (bytes < total_bytes && !READ_ONCE(arg.stop)) { - nr_recv =3D recv(fd, &batch, - MIN(total_bytes - bytes, sizeof(batch)), 0); - if (nr_recv =3D=3D -1 && errno =3D=3D EINTR) - continue; - if (nr_recv =3D=3D -1) - break; - bytes +=3D nr_recv; - } - - ASSERT_EQ(bytes, total_bytes, "recv"); - - WRITE_ONCE(arg.stop, 1); - pthread_join(srv_thread, &thread_ret); - ASSERT_OK(IS_ERR(thread_ret), "thread_ret"); + send_recv_data(lfd, fd, total_bytes); =20 done: close(lfd); --=20 2.40.1