1// SPDX-License-Identifier: GPL-2.0 2/* Copyright Amazon.com Inc. or its affiliates. */ 3 4#include <sys/socket.h> 5#include <netinet/in.h> 6 7#include "../kselftest_harness.h" 8 9FIXTURE(bind_timewait) 10{ 11 struct sockaddr_in addr; 12 socklen_t addrlen; 13}; 14 15FIXTURE_VARIANT(bind_timewait) 16{ 17 __u32 addr_const; 18}; 19 20FIXTURE_VARIANT_ADD(bind_timewait, localhost) 21{ 22 .addr_const = INADDR_LOOPBACK 23}; 24 25FIXTURE_VARIANT_ADD(bind_timewait, addrany) 26{ 27 .addr_const = INADDR_ANY 28}; 29 30FIXTURE_SETUP(bind_timewait) 31{ 32 self->addr.sin_family = AF_INET; 33 self->addr.sin_port = 0; 34 self->addr.sin_addr.s_addr = htonl(variant->addr_const); 35 self->addrlen = sizeof(self->addr); 36} 37 38FIXTURE_TEARDOWN(bind_timewait) 39{ 40} 41 42void create_timewait_socket(struct __test_metadata *_metadata, 43 FIXTURE_DATA(bind_timewait) *self) 44{ 45 int server_fd, client_fd, child_fd, ret; 46 struct sockaddr_in addr; 47 socklen_t addrlen; 48 49 server_fd = socket(AF_INET, SOCK_STREAM, 0); 50 ASSERT_GT(server_fd, 0); 51 52 ret = bind(server_fd, (struct sockaddr *)&self->addr, self->addrlen); 53 ASSERT_EQ(ret, 0); 54 55 ret = listen(server_fd, 1); 56 ASSERT_EQ(ret, 0); 57 58 ret = getsockname(server_fd, (struct sockaddr *)&self->addr, &self->addrlen); 59 ASSERT_EQ(ret, 0); 60 61 client_fd = socket(AF_INET, SOCK_STREAM, 0); 62 ASSERT_GT(client_fd, 0); 63 64 ret = connect(client_fd, (struct sockaddr *)&self->addr, self->addrlen); 65 ASSERT_EQ(ret, 0); 66 67 addrlen = sizeof(addr); 68 child_fd = accept(server_fd, (struct sockaddr *)&addr, &addrlen); 69 ASSERT_GT(child_fd, 0); 70 71 close(child_fd); 72 close(client_fd); 73 close(server_fd); 74} 75 76TEST_F(bind_timewait, 1) 77{ 78 int fd, ret; 79 80 create_timewait_socket(_metadata, self); 81 82 fd = socket(AF_INET, SOCK_STREAM, 0); 83 ASSERT_GT(fd, 0); 84 85 ret = bind(fd, (struct sockaddr *)&self->addr, self->addrlen); 86 ASSERT_EQ(ret, -1); 87 ASSERT_EQ(errno, EADDRINUSE); 88 89 close(fd); 90} 91 92TEST_HARNESS_MAIN 93