From patchwork Mon Apr 8 03:45:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 13620527 X-Patchwork-Delegate: bpf@iogearbox.net 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 D611C4A2F; Mon, 8 Apr 2024 03:45:47 +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=1712547948; cv=none; b=TTzNgdwS6wmhmH4+dIf2gdjXpaMICOs0bsa0XwZDhNN3xI/BBfEB30ttHIzinC+YXm0yMSwAMRdYP0sWB/XIgGCoaZKwzgzjgqhhQ0qB1TvIQfqm388TiylrJILObkhlMYPwOuh3dpve5aNWVx0FbE/gCnhFyAgs0x7OqKYKzAw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712547948; c=relaxed/simple; bh=ZS6Ft5i8Dr7yUuNXwy5mu3ymuNubjt/vAswNcv6k4D0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=McHr89dGDjZoeDsGNP9u0tgBajYx4A6vkmXGT/LC7ahVBSXKe2xPF3weuDZnrjLR5r/apwZPA4pf0kaxNkhzba8CQXIgqrcZo/ZmhSQ0SIKTHha6bdfx8SVEdRsK9MMnqgco0ltM1uq5d1msYib44DWQhcEbkbJSed8Mv3Cl6Rw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HFA6FjL2; 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="HFA6FjL2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71344C43394; Mon, 8 Apr 2024 03:45:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712547947; bh=ZS6Ft5i8Dr7yUuNXwy5mu3ymuNubjt/vAswNcv6k4D0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HFA6FjL2RQ/KYaRPsai4wzHJHYDIvRB7rDBAFHcREUzq+LrJW2qwGppzYODVLxMBY +TobmuuWrXM0YKbOoX+SRyushOHw2YUzal8kkwO7z+v2WYXqqHslb+i/8LczUpnRle u/cUPwqn2mjnz7AvLlX/+z/TvXK+KZ/woHtN+wvFZKfa+smsZdmlB57nzy9NuHcH/G cIiQRs841yBEqKdsYut/DUV8IipxMTSoFrfqUzJainlgYAvFd5aT9u7Nu/E7V3eUwB xCtigfteSWf1RLV9P6XgycSqNYaVsPnLp5TMfcmgJM1G6+l7KiVoXCFuiJxCK728Eg k6wnIOdVc3OQg== 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, linux-kselftest@vger.kernel.org Subject: [PATCH bpf-next v2 1/2] selftests/bpf: Add struct send_recv_arg Date: Mon, 8 Apr 2024 11:45:30 +0800 Message-Id: <8d1ffc058f86bb0296be1a0abebd88de4553a80b.1712547287.git.tanggeliang@kylinos.cn> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: bpf@iogearbox.net 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 | 34 ++++++++++++------- 1 file changed, 22 insertions(+), 12 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c index 077b107130f6..64f172f02a9a 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 @@ static const unsigned int total_bytes = 10 * 1024 * 1024; static int expected_stg = 0xeB9F; -static int stop; static int settcpca(int fd, const char *tcp_ca) { @@ -34,13 +33,20 @@ static int settcpca(int fd, const char *tcp_ca) return 0; } +struct send_recv_arg { + int fd; + uint32_t bytes; + int stop; +}; + static void *server(void *arg) { - int lfd = (int)(long)arg, err = 0, fd; + struct send_recv_arg *a = (struct send_recv_arg *)arg; ssize_t nr_sent = 0, bytes = 0; char batch[1500]; + int err = 0, fd; - fd = accept(lfd, NULL, NULL); + fd = accept(a->fd, NULL, NULL); while (fd == -1) { if (errno == EINTR) continue; @@ -53,9 +59,9 @@ static void *server(void *arg) goto done; } - while (bytes < total_bytes && !READ_ONCE(stop)) { + while (bytes < a->bytes && !READ_ONCE(a->stop)) { nr_sent = send(fd, &batch, - MIN(total_bytes - bytes, sizeof(batch)), 0); + MIN(a->bytes - bytes, sizeof(batch)), 0); if (nr_sent == -1 && errno == EINTR) continue; if (nr_sent == -1) { @@ -65,13 +71,13 @@ static void *server(void *arg) bytes += nr_sent; } - ASSERT_EQ(bytes, total_bytes, "send"); + ASSERT_EQ(bytes, a->bytes, "send"); done: if (fd >= 0) close(fd); if (err) { - WRITE_ONCE(stop, 1); + WRITE_ONCE(a->stop, 1); return ERR_PTR(err); } return NULL; @@ -80,18 +86,22 @@ static void *server(void *arg) static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map) { ssize_t nr_recv = 0, bytes = 0; + struct send_recv_arg arg = { + .bytes = total_bytes, + .stop = 0, + }; int lfd = -1, fd = -1; pthread_t srv_thread; void *thread_ret; char batch[1500]; int err; - WRITE_ONCE(stop, 0); - lfd = start_server(AF_INET6, SOCK_STREAM, NULL, 0, 0); if (!ASSERT_NEQ(lfd, -1, "socket")) return; + arg.fd = lfd; + fd = socket(AF_INET6, SOCK_STREAM, 0); if (!ASSERT_NEQ(fd, -1, "socket")) { close(lfd); @@ -123,12 +133,12 @@ static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map) goto done; } - err = pthread_create(&srv_thread, NULL, server, (void *)(long)lfd); + err = 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(stop)) { + while (bytes < total_bytes && !READ_ONCE(arg.stop)) { nr_recv = recv(fd, &batch, MIN(total_bytes - bytes, sizeof(batch)), 0); if (nr_recv == -1 && errno == EINTR) @@ -140,7 +150,7 @@ static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map) ASSERT_EQ(bytes, total_bytes, "recv"); - WRITE_ONCE(stop, 1); + WRITE_ONCE(arg.stop, 1); pthread_join(srv_thread, &thread_ret); ASSERT_OK(IS_ERR(thread_ret), "thread_ret");