From patchwork Tue Nov 15 20:50:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arseniy Krasnov X-Patchwork-Id: 13044169 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66050C433FE for ; Tue, 15 Nov 2022 20:51:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238640AbiKOUvF (ORCPT ); Tue, 15 Nov 2022 15:51:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55878 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238574AbiKOUul (ORCPT ); Tue, 15 Nov 2022 15:50:41 -0500 Received: from mx.sberdevices.ru (mx.sberdevices.ru [45.89.227.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C95172D1DB; Tue, 15 Nov 2022 12:50:38 -0800 (PST) Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mx.sberdevices.ru (Postfix) with ESMTP id 09F105FD07; Tue, 15 Nov 2022 23:50:37 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1668545437; bh=JQL1ga6vP7uVnM/1sMjjuRBMWnCgT0aVBhk5ZnnWS9M=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=TzPG1RHKAgiskePC2sqheWt3Nxq2/yfFKOd9cvqk/T6vDIiyXilCgX4S6rCJLj/YG CAGbI4vvLJ9xUXXPLOlVUQQojI4GWvNgPtvSaUB+7XQyydNKGZRDd9EBp0UtsXHwWX 9WLGlIt56T4b6wbfHUpOBpai65PZEGDVcATwFpd9v21z+ukMMfheYa+8wsKk1TvQC/ ujzPsfXFYgBcfTJ2bzi1s4kRiPIhrn8ewYPQ2b1vi9xeoE5mZyJex0cHpI4eJ3SFRP ICGwvhmr7GoWrwPsSfJ172l2OtPJryVNNvI0C63pTo+UdsvlD4WzCQUAxDZV3PK3jb bF5knFYtqv2QQ== Received: from S-MS-EXCH01.sberdevices.ru (S-MS-EXCH01.sberdevices.ru [172.16.1.4]) by mx.sberdevices.ru (Postfix) with ESMTP; Tue, 15 Nov 2022 23:50:36 +0300 (MSK) From: Arseniy Krasnov To: Stefano Garzarella CC: "linux-kernel@vger.kernel.org" , "netdev@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , kernel , Bobby Eshleman , Krasnov Arseniy Subject: [RFC PATCH v1 1/3] test/vsock: rework message bound test Thread-Topic: [RFC PATCH v1 1/3] test/vsock: rework message bound test Thread-Index: AQHY+TPpot0teDu5AkucZunOQ/7DDw== Date: Tue, 15 Nov 2022 20:50:36 +0000 Message-ID: In-Reply-To: Accept-Language: en-US, ru-RU Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.16.1.12] Content-ID: <905A2B95B2474D41899DA843AF6EFA5E@sberdevices.ru> MIME-Version: 1.0 X-KSMG-Rule-ID: 4 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Status: not scanned, disabled by settings X-KSMG-AntiSpam-Interceptor-Info: not scanned X-KSMG-AntiPhishing: not scanned, disabled by settings X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 1.1.2.30, bases: 2022/11/15 16:23:00 #20571948 X-KSMG-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-State: RFC This updates message bound test making it more complex. Instead of sending 1 bytes messages with one MSG_EOR bit, it sends messages of random length(one half of messages are smaller than page size, second half are bigger) with random number of MSG_EOR bits set. Receiver also don't know total number of messages. Signed-off-by: Arseniy Krasnov --- tools/testing/vsock/control.c | 34 +++++++++ tools/testing/vsock/control.h | 2 + tools/testing/vsock/util.c | 13 ++++ tools/testing/vsock/util.h | 1 + tools/testing/vsock/vsock_test.c | 115 +++++++++++++++++++++++++++---- 5 files changed, 152 insertions(+), 13 deletions(-) diff --git a/tools/testing/vsock/control.c b/tools/testing/vsock/control.c index 4874872fc5a3..bed1649bdf3d 100644 --- a/tools/testing/vsock/control.c +++ b/tools/testing/vsock/control.c @@ -141,6 +141,40 @@ void control_writeln(const char *str) timeout_end(); } +void control_writeulong(unsigned long value) +{ + char str[32]; + + if (snprintf(str, sizeof(str), "%lu", value) >= sizeof(str)) { + perror("snprintf"); + exit(EXIT_FAILURE); + } + + control_writeln(str); +} + +unsigned long control_readulong(bool *ok) +{ + unsigned long value; + char *str; + + if (ok) + *ok = false; + + str = control_readln(); + + if (str == NULL) + return 0; + + value = strtoul(str, NULL, 10); + free(str); + + if (ok) + *ok = true; + + return value; +} + /* Return the next line from the control socket (without the trailing newline). * * The program terminates if a timeout occurs. diff --git a/tools/testing/vsock/control.h b/tools/testing/vsock/control.h index 51814b4f9ac1..cdd922dfea68 100644 --- a/tools/testing/vsock/control.h +++ b/tools/testing/vsock/control.h @@ -9,7 +9,9 @@ void control_init(const char *control_host, const char *control_port, void control_cleanup(void); void control_writeln(const char *str); char *control_readln(void); +unsigned long control_readulong(bool *ok); void control_expectln(const char *str); bool control_cmpln(char *line, const char *str, bool fail); +void control_writeulong(unsigned long value); #endif /* CONTROL_H */ diff --git a/tools/testing/vsock/util.c b/tools/testing/vsock/util.c index 2acbb7703c6a..351903836774 100644 --- a/tools/testing/vsock/util.c +++ b/tools/testing/vsock/util.c @@ -395,3 +395,16 @@ void skip_test(struct test_case *test_cases, size_t test_cases_len, test_cases[test_id].skip = true; } + +unsigned long djb2(const void *data, size_t len) +{ + unsigned long hash = 5381; + int i = 0; + + while (i < len) { + hash = ((hash << 5) + hash) + ((unsigned char *)data)[i]; + i++; + } + + return hash; +} diff --git a/tools/testing/vsock/util.h b/tools/testing/vsock/util.h index a3375ad2fb7f..988cc69a4642 100644 --- a/tools/testing/vsock/util.h +++ b/tools/testing/vsock/util.h @@ -49,4 +49,5 @@ void run_tests(const struct test_case *test_cases, void list_tests(const struct test_case *test_cases); void skip_test(struct test_case *test_cases, size_t test_cases_len, const char *test_id_str); +unsigned long djb2(const void *data, size_t len); #endif /* UTIL_H */ diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c index bb6d691cb30d..107c11165887 100644 --- a/tools/testing/vsock/vsock_test.c +++ b/tools/testing/vsock/vsock_test.c @@ -284,10 +284,14 @@ static void test_stream_msg_peek_server(const struct test_opts *opts) close(fd); } -#define MESSAGES_CNT 7 -#define MSG_EOR_IDX (MESSAGES_CNT / 2) +#define SOCK_BUF_SIZE (2 * 1024 * 1024) +#define MAX_MSG_SIZE (32 * 1024) + static void test_seqpacket_msg_bounds_client(const struct test_opts *opts) { + unsigned long curr_hash; + int page_size; + int msg_count; int fd; fd = vsock_seqpacket_connect(opts->peer_cid, 1234); @@ -296,18 +300,69 @@ static void test_seqpacket_msg_bounds_client(const struct test_opts *opts) exit(EXIT_FAILURE); } - /* Send several messages, one with MSG_EOR flag */ - for (int i = 0; i < MESSAGES_CNT; i++) - send_byte(fd, 1, (i == MSG_EOR_IDX) ? MSG_EOR : 0); + /* Wait, until receiver sets buffer size. */ + control_expectln("SRVREADY"); + + curr_hash = 0; + page_size = getpagesize(); + msg_count = SOCK_BUF_SIZE / MAX_MSG_SIZE; + + for (int i = 0; i < msg_count; i++) { + ssize_t send_size; + size_t buf_size; + int flags; + void *buf; + + /* Use "small" buffers and "big" buffers. */ + if (i & 1) + buf_size = page_size + + (rand() % (MAX_MSG_SIZE - page_size)); + else + buf_size = 1 + (rand() % page_size); + + buf = malloc(buf_size); + + if (!buf) { + perror("malloc"); + exit(EXIT_FAILURE); + } + + /* Set at least one MSG_EOR + some random. */ + if (i == (msg_count / 2) || (rand() & 1)) { + flags = MSG_EOR; + curr_hash++; + } else { + flags = 0; + } + + send_size = send(fd, buf, buf_size, flags); + + if (send_size < 0) { + perror("send"); + exit(EXIT_FAILURE); + } + + if (send_size != buf_size) { + fprintf(stderr, "Invalid send size\n"); + exit(EXIT_FAILURE); + } + + curr_hash += send_size; + curr_hash = djb2(&curr_hash, sizeof(curr_hash)); + } control_writeln("SENDDONE"); + control_writeulong(curr_hash); close(fd); } static void test_seqpacket_msg_bounds_server(const struct test_opts *opts) { + unsigned long sock_buf_size; + unsigned long remote_hash; + unsigned long curr_hash; int fd; - char buf[16]; + char buf[MAX_MSG_SIZE]; struct msghdr msg = {0}; struct iovec iov = {0}; @@ -317,25 +372,58 @@ static void test_seqpacket_msg_bounds_server(const struct test_opts *opts) exit(EXIT_FAILURE); } + sock_buf_size = SOCK_BUF_SIZE; + + if (setsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_MAX_SIZE, + &sock_buf_size, sizeof(sock_buf_size))) { + perror("getsockopt"); + exit(EXIT_FAILURE); + } + + if (setsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_SIZE, + &sock_buf_size, sizeof(sock_buf_size))) { + perror("getsockopt"); + exit(EXIT_FAILURE); + } + + /* Ready to receive data. */ + control_writeln("SRVREADY"); + /* Wait, until peer sends whole data. */ control_expectln("SENDDONE"); iov.iov_base = buf; iov.iov_len = sizeof(buf); msg.msg_iov = &iov; msg.msg_iovlen = 1; - for (int i = 0; i < MESSAGES_CNT; i++) { - if (recvmsg(fd, &msg, 0) != 1) { - perror("message bound violated"); - exit(EXIT_FAILURE); - } + curr_hash = 0; - if ((i == MSG_EOR_IDX) ^ !!(msg.msg_flags & MSG_EOR)) { - perror("MSG_EOR"); + while (1) { + ssize_t recv_size; + + recv_size = recvmsg(fd, &msg, 0); + + if (!recv_size) + break; + + if (recv_size < 0) { + perror("recvmsg"); exit(EXIT_FAILURE); } + + if (msg.msg_flags & MSG_EOR) + curr_hash++; + + curr_hash += recv_size; + curr_hash = djb2(&curr_hash, sizeof(curr_hash)); } close(fd); + remote_hash = control_readulong(NULL); + + if (curr_hash != remote_hash) { + fprintf(stderr, "Message bounds broken\n"); + exit(EXIT_FAILURE); + } } #define MESSAGE_TRUNC_SZ 32 @@ -837,6 +925,7 @@ int main(int argc, char **argv) .peer_cid = VMADDR_CID_ANY, }; + srand(time(NULL)); init_signals(); for (;;) {