diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c index 0ff64b70b74655e418c3a40091239280ca04024f..999a775484c1928f14658df6df1894427dc67c51 100644 --- a/tools/testing/selftests/bpf/network_helpers.c +++ b/tools/testing/selftests/bpf/network_helpers.c @@ -4,10 +4,14 @@ #include #include #include + +#include + #include #include #include +#include "bpf_util.h" #include "network_helpers.h" #define clean_errno() (errno == 0 ? "None" : strerror(errno)) @@ -77,9 +81,7 @@ static const size_t timeo_optlen = sizeof(timeo_sec); int connect_to_fd(int family, int type, int server_fd) { - struct sockaddr_storage addr; - socklen_t len = sizeof(addr); - int fd; + int fd, save_errno; fd = socket(family, type, 0); if (fd < 0) { @@ -87,24 +89,70 @@ int connect_to_fd(int family, int type, int server_fd) return -1; } - if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &timeo_sec, timeo_optlen)) { + if (connect_fd_to_fd(fd, server_fd) < 0 && errno != EINPROGRESS) { + save_errno = errno; + close(fd); + errno = save_errno; + return -1; + } + + return fd; +} + +int connect_fd_to_fd(int client_fd, int server_fd) +{ + struct sockaddr_storage addr; + socklen_t len = sizeof(addr); + int save_errno; + + if (setsockopt(client_fd, SOL_SOCKET, SO_RCVTIMEO, &timeo_sec, + timeo_optlen)) { log_err("Failed to set SO_RCVTIMEO"); - goto out; + return -1; } if (getsockname(server_fd, (struct sockaddr *)&addr, &len)) { log_err("Failed to get server addr"); - goto out; + return -1; } - if (connect(fd, (const struct sockaddr *)&addr, len) < 0) { - log_err("Fail to connect to server with family %d", family); - goto out; + if (connect(client_fd, (const struct sockaddr *)&addr, len) < 0) { + if (errno != EINPROGRESS) { + save_errno = errno; + log_err("Failed to connect to server"); + errno = save_errno; + } + return -1; } - return fd; + return 0; +} + +int connect_wait(int fd) +{ + struct epoll_event ev = {}, events[2]; + int timeout_ms = 1000; + int efd, nfd; + + efd = epoll_create1(EPOLL_CLOEXEC); + if (efd < 0) { + log_err("Failed to open epoll fd"); + return -1; + } + + ev.events = EPOLLRDHUP | EPOLLOUT; + ev.data.fd = fd; + + if (epoll_ctl(efd, EPOLL_CTL_ADD, fd, &ev) < 0) { + log_err("Failed to register fd=%d on epoll fd=%d", fd, efd); + close(efd); + return -1; + } + + nfd = epoll_wait(efd, events, ARRAY_SIZE(events), timeout_ms); + if (nfd < 0) + log_err("Failed to wait for I/O event on epoll fd=%d", efd); -out: - close(fd); - return -1; + close(efd); + return nfd; } diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h index a0be7db4f67d6a5f4c8e8006d68ddca7e957a88e..86914e6e7b535ef71b1465175fc10f0adcc44581 100644 --- a/tools/testing/selftests/bpf/network_helpers.h +++ b/tools/testing/selftests/bpf/network_helpers.h @@ -35,5 +35,7 @@ extern struct ipv6_packet pkt_v6; int start_server(int family, int type); int connect_to_fd(int family, int type, int server_fd); +int connect_fd_to_fd(int client_fd, int server_fd); +int connect_wait(int client_fd); #endif