From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on gnuweeb.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=ALL_TRUSTED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NO_DNS_FOR_FROM,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 Received: from localhost.localdomain (unknown [182.2.38.99]) by gnuweeb.org (Postfix) with ESMTPSA id A093080BC2; Fri, 2 Sep 2022 01:18:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=default; t=1662081486; bh=NdcWOVgA/+JNXYgu2bfVYwufZVhddbidhJxVIINy8VA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MOoAWQ/s4hr7w1lMCyBqk76DoTgplDYi2jK/vrsDyoHGUMd4dh8DL/UWBeEy65olk MSAB3l6/uXTLAmfvQx4oXjooLTCbUUUV72umtBPSlOlK6dZ6dJX7RwAFCIA8MVArP2 Ok6+YjPifItzDF4MvbNS5tm804MmSGhJgxifrWaz1L8M0JVJ7n5pIiosfgtLd3dF1f 18fxgJ9Gb8WILuA5mikVey0ROhr4G5sRdbRavDVdfyrWiIWijBeApEPR4UogFHMjch XAnBRmax+Kqu2fkoI0On7E296sd/WWu+g2YAMzhZEDXcELbfQY9t9XcLWYCyTRXio6 y93LjzShZPbzg== From: Ammar Faizi To: Jens Axboe Cc: Ammar Faizi , Dylan Yudaken , Facebook Kernel Team , Pavel Begunkov , io-uring Mailing List , GNU/Weeb Mailing List , Kanna Scarlet , Muhammad Rizki Subject: [RESEND PATCH liburing v1 02/12] t/poll-link: Don't brute force the port number Date: Fri, 2 Sep 2022 08:17:42 +0700 Message-Id: <20220902011548.2506938-3-ammar.faizi@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220902011548.2506938-1-ammar.faizi@intel.com> References: <20220902011548.2506938-1-ammar.faizi@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit List-Id: From: Ammar Faizi Don't brute force the port number, use `t_bind_ephemeral_port()`, much simpler and reliable for choosing a port number that is not in use. Cc: Dylan Yudaken Cc: Facebook Kernel Team Cc: Pavel Begunkov Signed-off-by: Ammar Faizi --- test/poll-link.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/test/poll-link.c b/test/poll-link.c index 197ad77..a6fe0de 100644 --- a/test/poll-link.c +++ b/test/poll-link.c @@ -4,24 +4,25 @@ #include #include #include #include #include #include #include #include #include #include #include +#include "helpers.h" #include "liburing.h" pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; pthread_cond_t cond = PTHREAD_COND_INITIALIZER; static int recv_thread_ready = 0; static int recv_thread_done = 0; static void signal_var(int *var) { pthread_mutex_lock(&mutex); *var = 1; @@ -80,45 +81,37 @@ void *recv_thread(void *arg) ret = io_uring_queue_init(8, &ring, 0); assert(ret == 0); int s0 = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); assert(s0 != -1); int32_t val = 1; ret = setsockopt(s0, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(val)); assert(ret != -1); ret = setsockopt(s0, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); assert(ret != -1); - struct sockaddr_in addr; + struct sockaddr_in addr = { }; addr.sin_family = AF_INET; data->addr = inet_addr("127.0.0.1"); addr.sin_addr.s_addr = data->addr; - i = 0; - do { - data->port = htons(1025 + (rand() % 64510)); - addr.sin_port = data->port; - - if (bind(s0, (struct sockaddr*)&addr, sizeof(addr)) != -1) - break; - } while (++i < 100); - - if (i >= 100) { - fprintf(stderr, "Can't find good port, skipped\n"); + if (t_bind_ephemeral_port(s0, &addr)) { + perror("bind"); data->stop = 1; signal_var(&recv_thread_ready); - goto out; + goto err; } + data->port = addr.sin_port; ret = listen(s0, 128); assert(ret != -1); signal_var(&recv_thread_ready); sqe = io_uring_get_sqe(&ring); assert(sqe != NULL); io_uring_prep_poll_add(sqe, s0, POLLIN | POLLHUP | POLLERR); sqe->flags |= IOSQE_IO_LINK; sqe->user_data = 1; @@ -149,25 +142,24 @@ void *recv_thread(void *arg) (uint64_t) cqe->user_data, cqe->res, data->expected[idx]); goto err; } else if (!data->is_mask[idx] && cqe->res != data->expected[idx]) { fprintf(stderr, "cqe %" PRIu64 " got %d, wanted %d\n", (uint64_t) cqe->user_data, cqe->res, data->expected[idx]); goto err; } io_uring_cqe_seen(&ring, cqe); } -out: signal_var(&recv_thread_done); close(s0); io_uring_queue_exit(&ring); return NULL; err: signal_var(&recv_thread_done); close(s0); io_uring_queue_exit(&ring); return (void *) 1; } static int test_poll_timeout(int do_connect, unsigned long timeout) -- Ammar Faizi