From mboxrd@z Thu Jan 1 00:00:00 1970 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 16D7FC43334 for ; Tue, 28 Jun 2022 15:04:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347731AbiF1PEc (ORCPT ); Tue, 28 Jun 2022 11:04:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347720AbiF1PEb (ORCPT ); Tue, 28 Jun 2022 11:04:31 -0400 Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com [67.231.145.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0DD64192A3 for ; Tue, 28 Jun 2022 08:04:30 -0700 (PDT) Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 25SAE6Vq013125 for ; Tue, 28 Jun 2022 08:04:29 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=rJDn4mTH+FztlGFytSbqUBIqiZ4DyJ/3UGqMxMNnJTk=; b=VBBU4xKHhUjwSD/8TJ+GbEwNcRoQZl2SLBKSCZalqgfHvfFYduKpJLmARtQt9nOnYjGT IraYvGs/k40QowfwpxLG0Vz5GR+6knwECOk8mY3NVsZR9Wfj+CYfhVuK/vGuu+9GOAzb gJg2ALCFe9n/b5dhroPjlq7kJ2TmmPKz2zM= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3gyxx31ytw-4 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 28 Jun 2022 08:04:29 -0700 Received: from twshared17349.03.ash7.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Tue, 28 Jun 2022 08:04:26 -0700 Received: by devbig038.lla2.facebook.com (Postfix, from userid 572232) id C18C1244BD59; Tue, 28 Jun 2022 08:04:18 -0700 (PDT) From: Dylan Yudaken To: Jens Axboe , Pavel Begunkov , CC: , Dylan Yudaken Subject: [PATCH liburing 3/4] add recv-multishot test Date: Tue, 28 Jun 2022 08:04:13 -0700 Message-ID: <20220628150414.1386435-4-dylany@fb.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220628150414.1386435-1-dylany@fb.com> References: <20220628150414.1386435-1-dylany@fb.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-GUID: 028fMTDhAnRImmUgh-gjY-N-CWuMU_d- X-Proofpoint-ORIG-GUID: 028fMTDhAnRImmUgh-gjY-N-CWuMU_d- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-06-28_08,2022-06-28_01,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org add a test for multishot receive functionality Signed-off-by: Dylan Yudaken --- test/Makefile | 1 + test/recv-multishot.c | 308 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 309 insertions(+) create mode 100644 test/recv-multishot.c diff --git a/test/Makefile b/test/Makefile index e3204a7..73a0001 100644 --- a/test/Makefile +++ b/test/Makefile @@ -124,6 +124,7 @@ test_srcs :=3D \ read-write.c \ recv-msgall.c \ recv-msgall-stream.c \ + recv-multishot.c \ register-restrictions.c \ rename.c \ ringbuf-read.c \ diff --git a/test/recv-multishot.c b/test/recv-multishot.c new file mode 100644 index 0000000..38ec615 --- /dev/null +++ b/test/recv-multishot.c @@ -0,0 +1,308 @@ +// SPDX-License-Identifier: MIT + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "liburing.h" +#include "helpers.h" + + +enum early_error_t { + ERROR_NONE =3D 0, + ERROR_NOT_ENOUGH_BUFFERS =3D 1, + ERROR_EARLY_CLOSE_SENDER =3D 2, + ERROR_EARLY_CLOSE_RECEIVER =3D 3, +}; + +struct args { + bool recvmsg; + bool stream; + bool wait_each; + enum early_error_t early_error; +}; + +static int test(struct args *args) +{ + int const N =3D 8; + int const N_BUFFS =3D N * 64; + int const min_cqes =3D 2; + struct io_uring ring; + struct io_uring_cqe *cqe; + struct io_uring_sqe *sqe; + int fds[2], ret, i, j, total_sent_bytes =3D 0, total_recv_bytes =3D 0; + int send_buff[256]; + int *recv_buffs[N_BUFFS]; + int *at; + struct io_uring_cqe recv_cqe[N_BUFFS]; + int recv_cqes =3D 0; + bool early_error =3D false; + bool early_error_started =3D false; + struct msghdr msg =3D { }; + struct __kernel_timespec timeout =3D { + .tv_sec =3D 1, + }; + + + memset(recv_buffs, 0, sizeof(recv_buffs)); + + ret =3D io_uring_queue_init(32, &ring, 0); + if (ret) { + fprintf(stderr, "queue init failed: %d\n", ret); + return ret; + } + + ret =3D t_create_socket_pair(fds, args->stream); + if (ret) { + fprintf(stderr, "t_create_socket_pair failed: %d\n", ret); + return ret; + } + + for (i =3D 0; i < ARRAY_SIZE(send_buff); i++) + send_buff[i] =3D i; + + for (i =3D 0; i < ARRAY_SIZE(recv_buffs); i++) { + /* prepare some different sized buffers */ + int buffer_size =3D (i % 2 =3D=3D 0 && args->stream) ? 1 : N * sizeof(= int); + + recv_buffs[i] =3D malloc(sizeof(*at) * buffer_size); + + if (i > 2 && args->early_error =3D=3D ERROR_NOT_ENOUGH_BUFFERS) + continue; + + sqe =3D io_uring_get_sqe(&ring); + io_uring_prep_provide_buffers(sqe, recv_buffs[i], + buffer_size * sizeof(*recv_buffs[i]), 1, 7, i); + if (io_uring_submit_and_wait_timeout(&ring, &cqe, 1, &timeout, NULL) != =3D 0) { + fprintf(stderr, "provide buffers failed: %d\n", ret); + ret =3D -1; + goto cleanup; + } + io_uring_cqe_seen(&ring, cqe); + } + + sqe =3D io_uring_get_sqe(&ring); + if (args->recvmsg) { + memset(&msg, 0, sizeof(msg)); + msg.msg_namelen =3D sizeof(struct sockaddr_in); + io_uring_prep_recvmsg(sqe, fds[0], &msg, 0); + } else { + io_uring_prep_recv(sqe, fds[0], NULL, 0, 0); + } + sqe->flags |=3D IOSQE_BUFFER_SELECT; + sqe->buf_group =3D 7; + sqe->addr2 |=3D IORING_RECV_MULTISHOT; + io_uring_sqe_set_data64(sqe, 1234); + io_uring_submit(&ring); + + at =3D &send_buff[0]; + total_sent_bytes =3D 0; + for (i =3D 0; i < N; i++) { + int to_send =3D sizeof(*at) * (i+1); + + total_sent_bytes +=3D to_send; + if (send(fds[1], at, to_send, 0) !=3D to_send) { + if (early_error_started) + break; + fprintf(stderr, "send failed %d\n", errno); + ret =3D -1; + goto cleanup; + } + + if (i =3D=3D 2) { + if (args->early_error =3D=3D ERROR_EARLY_CLOSE_RECEIVER) { + /* allow previous sends to complete */ + usleep(1000); + + sqe =3D io_uring_get_sqe(&ring); + io_uring_prep_recv(sqe, fds[0], NULL, 0, 0); + io_uring_prep_cancel64(sqe, 1234, 0); + sqe->flags |=3D IOSQE_CQE_SKIP_SUCCESS; + io_uring_submit(&ring); + early_error_started =3D true; + } + if (args->early_error =3D=3D ERROR_EARLY_CLOSE_SENDER) { + early_error_started =3D true; + shutdown(fds[1], SHUT_RDWR); + close(fds[1]); + } + } + at +=3D (i+1); + + if (args->wait_each) { + ret =3D io_uring_wait_cqes(&ring, &cqe, 1, &timeout, NULL); + if (ret) { + fprintf(stderr, "wait_each failed: %d\n", ret); + ret =3D -1; + goto cleanup; + } + while (io_uring_peek_cqe(&ring, &cqe) =3D=3D 0) { + recv_cqe[recv_cqes++] =3D *cqe; + if (cqe->flags & IORING_CQE_F_MORE) { + io_uring_cqe_seen(&ring, cqe); + } else { + early_error =3D true; + io_uring_cqe_seen(&ring, cqe); + } + } + if (early_error) + break; + } + } + + close(fds[1]); + + /* allow sends to finish */ + usleep(1000); + + if ((args->stream && !early_error) || recv_cqes < min_cqes) { + ret =3D io_uring_wait_cqes(&ring, &cqe, 1, &timeout, NULL); + if (ret && ret !=3D -ETIME) { + fprintf(stderr, "wait final failed: %d\n", ret); + ret =3D -1; + goto cleanup; + } + } + + while (io_uring_peek_cqe(&ring, &cqe) =3D=3D 0) { + recv_cqe[recv_cqes++] =3D *cqe; + io_uring_cqe_seen(&ring, cqe); + } + + ret =3D -1; + at =3D &send_buff[0]; + if (recv_cqes < min_cqes) { + fprintf(stderr, "not enough cqes: have=3D%d vs %d\n", recv_cqes, min_c= qes); + goto cleanup; + } + for (i =3D 0; i < recv_cqes; i++) { + bool const is_last =3D i =3D=3D recv_cqes - 1; + int *this_recv; + + cqe =3D &recv_cqe[i]; + + if (cqe->res <=3D 0 || (args->stream && is_last)) { + if (!is_last) { + fprintf(stderr, "not last cqe had error %d\n", i); + goto cleanup; + } + + switch (args->early_error) { + case ERROR_NOT_ENOUGH_BUFFERS: + if (cqe->res !=3D -ENOBUFS) { + fprintf(stderr, + "ERROR_NOT_ENOUGH_BUFFERS: res %d\n", cqe->res); + goto cleanup; + } + break; + case ERROR_EARLY_CLOSE_RECEIVER: + if (cqe->res !=3D -ECANCELED) { + fprintf(stderr, + "ERROR_EARLY_CLOSE_RECEIVER: res %d\n", cqe->res); + goto cleanup; + } + break; + case ERROR_NONE: + case ERROR_EARLY_CLOSE_SENDER: + if (cqe->res !=3D 0) { + fprintf(stderr, "early error: res %d\n", cqe->res); + goto cleanup; + } + break; + }; + + if (cqe->flags & IORING_CQE_F_BUFFER) { + fprintf(stderr, "final BUFFER flag set\n"); + goto cleanup; + } + + if (cqe->flags & IORING_CQE_F_MORE) { + fprintf(stderr, "final MORE flag set\n"); + goto cleanup; + } + + continue; + } + + total_recv_bytes +=3D cqe->res; + if (!(cqe->flags & IORING_CQE_F_BUFFER)) { + fprintf(stderr, "BUFFER flag not set\n"); + goto cleanup; + } + if (!(cqe->flags & IORING_CQE_F_MORE)) { + fprintf(stderr, "MORE flag not set\n"); + goto cleanup; + } + if (cqe->res % 4 !=3D 0) { + /* + * doesn't seem to happen in practice, would need some + * work to remove this requirement + */ + fprintf(stderr, "unexpectedly aligned buffer cqe->res=3D%d\n", cqe->r= es); + goto cleanup; + } + + /* check buffer arrived in order (for tcp) */ + this_recv =3D recv_buffs[cqe->flags >> 16]; + for (j =3D 0; args->stream && j < cqe->res / 4; j++) { + int sent =3D *at++; + int recv =3D *this_recv++; + + if (sent !=3D recv) { + fprintf(stderr, "recv=3D%d sent=3D%d\n", recv, sent); + goto cleanup; + } + } + } + + if (args->early_error =3D=3D ERROR_NONE && total_recv_bytes < total_sen= t_bytes) { + fprintf(stderr, + "missing recv: recv=3D%d sent=3D%d\n", total_recv_bytes, total_sent_b= ytes); + goto cleanup; + } + + /* check the final one */ + cqe =3D &recv_cqe[recv_cqes-1]; + + ret =3D 0; +cleanup: + for (i =3D 0; i < ARRAY_SIZE(recv_buffs); i++) + free(recv_buffs[i]); + close(fds[0]); + close(fds[1]); + io_uring_queue_exit(&ring); + + return ret; +} + +int main(int argc, char *argv[]) +{ + int ret; + int loop; + + if (argc > 1) + return 0; + + for (loop =3D 0; loop < 32; loop++) { + struct args a =3D { + .early_error =3D loop & 0x03, + .stream =3D loop & 0x04, + .recvmsg =3D loop & 0x08, + .wait_each =3D loop & 0x10, + }; + ret =3D test(&a); + if (ret) { + fprintf(stderr, + "test stream=3D%d recvmsg=3D%d wait_each=3D%d early_error=3D%d faile= d\n", + a.stream, a.recvmsg, a.wait_each, a.early_error); + return ret; + } + } + return 0; +} --=20 2.30.2