static int tcp_sock_finish_setup(tcp_sockdata_t *sock, int *sock_id)
{
socket_core_t *sock_core;
int rc;
log_msg(LVL_DEBUG, "tcp_sock_finish_setup()");
sock->recv_fibril = fibril_create(tcp_sock_recv_fibril, sock);
if (sock->recv_fibril == 0)
return ENOMEM;
rc = socket_create(&sock->client->sockets, sock->client->sess,
sock, sock_id);
if (rc != EOK) {
fibril_destroy(sock->recv_fibril);
sock->recv_fibril = 0;
return rc;
}
sock_core = socket_cores_find(&sock->client->sockets, *sock_id);
assert(sock_core != NULL);
sock->sock_core = sock_core;
return EOK;
}
/** Create new timer.
*
* @return New timer on success, @c NULL if out of memory.
*/
fibril_timer_t *fibril_timer_create(void)
{
fid_t fid;
fibril_timer_t *timer;
timer = calloc(1, sizeof(fibril_timer_t));
if (timer == NULL)
return NULL;
fid = fibril_create(fibril_timer_func, (void *) timer);
if (fid == 0) {
free(timer);
return NULL;
}
fibril_mutex_initialize(&timer->lock);
fibril_condvar_initialize(&timer->cv);
timer->fibril = fid;
timer->state = fts_not_set;
fibril_add_ready(fid);
return timer;
}
static int vhc_virtdev_plug_generic(vhc_data_t *vhc,
async_sess_t *sess, usbvirt_device_t *virtdev,
uintptr_t *handle, bool connect, usb_address_t address)
{
vhc_virtdev_t *dev = vhc_virtdev_create();
if (dev == NULL) {
return ENOMEM;
}
dev->dev_sess = sess;
dev->dev_local = virtdev;
dev->address = address;
fibril_mutex_lock(&vhc->guard);
list_append(&dev->link, &vhc->devices);
fibril_mutex_unlock(&vhc->guard);
fid_t fibril = fibril_create(vhc_transfer_queue_processor, dev);
if (fibril == 0) {
free(dev);
return ENOMEM;
}
fibril_add_ready(fibril);
if (handle != NULL) {
*handle = (uintptr_t) dev;
}
if (connect) {
// FIXME: check status
(void) virthub_connect_device(&vhc->hub, dev);
}
return EOK;
}
static int test2_dev_add(ddf_dev_t *dev)
{
test2_t *test2;
ddf_msg(LVL_DEBUG, "test2_dev_add(name=\"%s\", handle=%d)",
dev->name, (int) dev->handle);
test2 = ddf_dev_data_alloc(dev, sizeof(test2_t));
if (test2 == NULL) {
ddf_msg(LVL_ERROR, "Failed allocating soft state.");
return ENOMEM;
}
test2->dev = dev;
if (str_cmp(dev->name, "child") != 0) {
fid_t postpone = fibril_create(plug_unplug, test2);
if (postpone == 0) {
ddf_msg(LVL_ERROR, "fibril_create() failed.");
return ENOMEM;
}
fibril_add_ready(postpone);
} else {
(void) register_fun_verbose(dev, "child without available driver",
"ERROR", "non-existent.match.id", 10, &test2->fun_err);
}
return EOK;
}
/** Start receive queue handler fibril. */
void tcp_rqueue_fibril_start(void)
{
fid_t fid;
log_msg(LVL_DEBUG, "tcp_rqueue_fibril_start()");
fid = fibril_create(tcp_rqueue_fibril, NULL);
if (fid == 0) {
log_msg(LVL_ERROR, "Failed creating rqueue fibril.");
return;
}
fibril_add_ready(fid);
}
/** Initialize keyboard driver structure.
*
* @param kbd Keyboard driver structure to initialize.
* @param dev DDF device structure.
*
* Connects to parent, creates keyboard function, starts polling fibril.
*
*/
int at_kbd_init(at_kbd_t *kbd, ddf_dev_t *dev)
{
assert(kbd);
assert(dev);
kbd->client_sess = NULL;
kbd->parent_sess = ddf_dev_parent_sess_create(dev);
if (!kbd->parent_sess) {
ddf_msg(LVL_ERROR, "Failed creating parent session.");
return EIO;
}
kbd->kbd_fun = ddf_fun_create(dev, fun_exposed, "kbd");
if (!kbd->kbd_fun) {
ddf_msg(LVL_ERROR, "Failed creating function 'kbd'.");
return ENOMEM;
}
ddf_fun_set_ops(kbd->kbd_fun, &kbd_ops);
int ret = ddf_fun_bind(kbd->kbd_fun);
if (ret != EOK) {
ddf_msg(LVL_ERROR, "Failed binding function 'kbd'.");
ddf_fun_destroy(kbd->kbd_fun);
return EEXIST;
}
ret = ddf_fun_add_to_category(kbd->kbd_fun, "keyboard");
if (ret != EOK) {
ddf_msg(LVL_ERROR, "Failed adding function 'kbd' to category "
"'keyboard'.");
ddf_fun_unbind(kbd->kbd_fun);
ddf_fun_destroy(kbd->kbd_fun);
return ENOMEM;
}
kbd->polling_fibril = fibril_create(polling, kbd);
if (!kbd->polling_fibril) {
ddf_msg(LVL_ERROR, "Failed creating polling fibril.");
ddf_fun_unbind(kbd->kbd_fun);
ddf_fun_destroy(kbd->kbd_fun);
return ENOMEM;
}
fibril_add_ready(kbd->polling_fibril);
return EOK;
}
/** Fibril for each accepted socket.
*
* @param arg Corresponding @c telnet_user_t structure.
*/
static int network_user_fibril(void *arg)
{
telnet_user_t *user = arg;
int rc = loc_service_register(user->service_name, &user->service_id);
if (rc != EOK) {
telnet_user_error(user, "Unable to register %s with loc: %s.",
user->service_name, str_error(rc));
return EOK;
}
telnet_user_log(user, "Service %s registerd with id %" PRIun ".",
user->service_name, user->service_id);
fid_t spawn_fibril = fibril_create(spawn_task_fibril, user);
assert(spawn_fibril);
fibril_add_ready(spawn_fibril);
/* Wait for all clients to exit. */
fibril_mutex_lock(&user->guard);
while (!user_can_be_destroyed_no_lock(user)) {
if (user->task_finished) {
closesocket(user->socket);
user->socket_closed = true;
user->srvs.aborted = true;
continue;
} else if (user->socket_closed) {
if (user->task_id != 0) {
task_kill(user->task_id);
}
}
fibril_condvar_wait_timeout(&user->refcount_cv, &user->guard, 1000);
}
fibril_mutex_unlock(&user->guard);
rc = loc_service_unregister(user->service_id);
if (rc != EOK) {
telnet_user_error(user,
"Unable to unregister %s from loc: %s (ignored).",
user->service_name, str_error(rc));
}
telnet_user_log(user, "Destroying...");
telnet_user_destroy(user);
return EOK;
}
/** Initialize UHCI hc driver structure
*
* @param[in] instance Memory place to initialize.
* @param[in] regs Address of I/O control registers.
* @param[in] reg_size Size of I/O control registers.
* @param[in] interrupts True if hw interrupts should be used.
* @return Error code.
* @note Should be called only once on any structure.
*
* Initializes memory structures, starts up hw, and launches debugger and
* interrupt fibrils.
*/
int hc_init(hc_t *instance, void *regs, size_t reg_size, bool interrupts)
{
assert(reg_size >= sizeof(uhci_regs_t));
int ret;
#define CHECK_RET_RETURN(ret, message...) \
if (ret != EOK) { \
usb_log_error(message); \
return ret; \
} else (void) 0
instance->hw_interrupts = interrupts;
instance->hw_failures = 0;
/* allow access to hc control registers */
uhci_regs_t *io;
ret = pio_enable(regs, reg_size, (void **)&io);
CHECK_RET_RETURN(ret, "Failed to gain access to registers at %p: %s.\n",
io, str_error(ret));
instance->registers = io;
usb_log_debug(
"Device registers at %p (%zuB) accessible.\n", io, reg_size);
ret = hc_init_mem_structures(instance);
CHECK_RET_RETURN(ret,
"Failed to initialize UHCI memory structures: %s.\n",
str_error(ret));
#undef CHECK_RET_RETURN
hcd_init(&instance->generic, USB_SPEED_FULL,
BANDWIDTH_AVAILABLE_USB11, bandwidth_count_usb11);
instance->generic.private_data = instance;
instance->generic.schedule = hc_schedule;
instance->generic.ep_add_hook = NULL;
hc_init_hw(instance);
if (!interrupts) {
instance->interrupt_emulator =
fibril_create(hc_interrupt_emulator, instance);
fibril_add_ready(instance->interrupt_emulator);
}
(void)hc_debug_checker;
return EOK;
}
/** Starts software periodic polling
*
* Reset to new period if the original period was running
*
* @param nic_data Nic data structure
*/
void nic_sw_period_start(nic_t *nic_data)
{
/* Create the fibril if it is not crated */
if (nic_data->sw_poll_info.fibril == 0) {
nic_data->sw_poll_info.fibril = fibril_create(period_fibril_fun,
nic_data);
nic_data->sw_poll_info.running = 0;
nic_data->sw_poll_info.run = 0;
/* Start fibril */
fibril_add_ready(nic_data->sw_poll_info.fibril);
}
/* Inform fibril about running with new period */
nic_data->sw_poll_info.run = (nic_data->sw_poll_info.run + 1) % 100;
nic_data->sw_poll_info.running = 1;
}
void virtual_hub_device_init(ddf_fun_t *hc_dev)
{
virthub_init(&virtual_hub_device);
/*
* We need to register the root hub.
* This must be done in separate fibril because the device
* we are connecting to are ourselves and we cannot connect
* before leaving the add_device() function.
*/
fid_t root_hub_registration
= fibril_create(hub_register_in_devman_fibril, hc_dev);
if (root_hub_registration == 0) {
usb_log_fatal("Failed to create hub registration fibril.\n");
return;
}
fibril_add_ready(root_hub_registration);
}
/** Initialize keyboard driver structure.
* @param kbd Keyboard driver structure to initialize.
* @param dev DDF device structure.
*
* Connects to parent, creates mouse function, starts polling fibril.
*/
int xt_kbd_init(xt_kbd_t *kbd, ddf_dev_t *dev)
{
assert(kbd);
assert(dev);
kbd->client_sess = NULL;
kbd->parent_sess = ddf_dev_parent_sess_create(dev, EXCHANGE_SERIALIZE);
if (!kbd->parent_sess)
return ENOMEM;
kbd->kbd_fun = ddf_fun_create(dev, fun_exposed, "kbd");
if (!kbd->kbd_fun) {
return ENOMEM;
}
ddf_fun_set_ops(kbd->kbd_fun, &kbd_ops);
int ret = ddf_fun_bind(kbd->kbd_fun);
if (ret != EOK) {
ddf_fun_destroy(kbd->kbd_fun);
return ENOMEM;
}
ret = ddf_fun_add_to_category(kbd->kbd_fun, "keyboard");
if (ret != EOK) {
ddf_fun_unbind(kbd->kbd_fun);
ddf_fun_destroy(kbd->kbd_fun);
return ENOMEM;
}
kbd->polling_fibril = fibril_create(polling, kbd);
if (!kbd->polling_fibril) {
ddf_fun_unbind(kbd->kbd_fun);
ddf_fun_destroy(kbd->kbd_fun);
return ENOMEM;
}
fibril_add_ready(kbd->polling_fibril);
return EOK;
}
int main(int argc, char *argv[])
{
int port = 2223;
async_set_client_connection(client_connection);
int rc = loc_server_register(NAME);
if (rc != EOK) {
fprintf(stderr, "%s: Unable to register server\n", NAME);
return rc;
}
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
rc = inet_pton(AF_INET, "127.0.0.1", (void *)
&addr.sin_addr.s_addr);
if (rc != EOK) {
fprintf(stderr, "Error parsing network address: %s.\n",
str_error(rc));
return 2;
}
int listen_sd = socket(PF_INET, SOCK_STREAM, 0);
if (listen_sd < 0) {
fprintf(stderr, "Error creating listening socket: %s.\n",
str_error(listen_sd));
return 3;
}
rc = bind(listen_sd, (struct sockaddr *) &addr, sizeof(addr));
if (rc != EOK) {
fprintf(stderr, "Error binding socket: %s.\n",
str_error(rc));
return 4;
}
rc = listen(listen_sd, BACKLOG_SIZE);
if (rc != EOK) {
fprintf(stderr, "listen() failed: %s.\n", str_error(rc));
return 5;
}
printf("%s: HelenOS Remote console service\n", NAME);
task_retval(0);
while (true) {
struct sockaddr_in raddr;
socklen_t raddr_len = sizeof(raddr);
int conn_sd = accept(listen_sd, (struct sockaddr *) &raddr,
&raddr_len);
if (conn_sd < 0) {
fprintf(stderr, "accept() failed: %s.\n",
str_error(rc));
continue;
}
telnet_user_t *user = telnet_user_create(conn_sd);
assert(user);
con_srvs_init(&user->srvs);
user->srvs.ops = &con_ops;
user->srvs.sarg = user;
user->srvs.abort_timeout = 1000;
telnet_user_add(user);
fid_t fid = fibril_create(network_user_fibril, user);
assert(fid);
fibril_add_ready(fid);
}
return 0;
}
/** Start automatic device polling over interrupt in pipe.
*
* @warning It is up to the callback to produce delays between individual
* requests.
*
* @warning There is no guarantee when the request to the device
* will be sent for the first time (it is possible that this
* first request would be executed prior to return from this function).
*
* @param dev Device to be periodically polled.
* @param pipe_index Index of the endpoint pipe used for polling.
* @param callback Callback when data are available.
* @param request_size How many bytes to ask for in each request.
* @param terminated_callback Callback when polling is terminated.
* @param arg Custom argument (passed as is to the callbacks).
* @return Error code.
* @retval EOK New fibril polling the device was already started.
*/
int usb_device_auto_poll(usb_device_t *dev, size_t pipe_index,
usb_polling_callback_t callback, size_t request_size,
usb_polling_terminted_callback_t terminated_callback, void *arg)
{
const usb_device_auto_polling_t auto_polling = {
.debug = 1,
.auto_clear_halt = true,
.delay = 0,
.max_failures = MAX_FAILED_ATTEMPTS,
.on_data = callback,
.on_polling_end = terminated_callback,
.on_error = NULL,
.arg = arg,
};
return usb_device_auto_polling(dev, pipe_index, &auto_polling,
request_size);
}
/** Start automatic device polling over interrupt in pipe.
*
* The polling settings is copied thus it is okay to destroy the structure
* after this function returns.
*
* @warning There is no guarantee when the request to the device
* will be sent for the first time (it is possible that this
* first request would be executed prior to return from this function).
*
* @param dev Device to be periodically polled.
* @param pipe_index Index of the endpoint pipe used for polling.
* @param polling Polling settings.
* @param request_size How many bytes to ask for in each request.
* @param arg Custom argument (passed as is to the callbacks).
* @return Error code.
* @retval EOK New fibril polling the device was already started.
*/
int usb_device_auto_polling(usb_device_t *dev, size_t pipe_index,
const usb_device_auto_polling_t *polling,
size_t request_size)
{
if ((dev == NULL) || (polling == NULL) || (polling->on_data == NULL)) {
return EBADMEM;
}
if (pipe_index >= dev->pipes_count || request_size == 0) {
return EINVAL;
}
if ((dev->pipes[pipe_index].pipe.transfer_type != USB_TRANSFER_INTERRUPT)
|| (dev->pipes[pipe_index].pipe.direction != USB_DIRECTION_IN)) {
return EINVAL;
}
polling_data_t *polling_data = malloc(sizeof(polling_data_t));
if (polling_data == NULL) {
return ENOMEM;
}
/* Fill-in the data. */
polling_data->buffer = malloc(sizeof(request_size));
if (polling_data->buffer == NULL) {
free(polling_data);
return ENOMEM;
}
polling_data->request_size = request_size;
polling_data->dev = dev;
polling_data->pipe_index = pipe_index;
/* Copy provided settings. */
polling_data->auto_polling = *polling;
/* Negative value means use descriptor provided value. */
if (polling->delay < 0) {
polling_data->auto_polling.delay =
(int) dev->pipes[pipe_index].descriptor->poll_interval;
}
fid_t fibril = fibril_create(polling_fibril, polling_data);
if (fibril == 0) {
free(polling_data->buffer);
free(polling_data);
return ENOMEM;
}
fibril_add_ready(fibril);
/* Fibril launched. That fibril will free the allocated data. */
return EOK;
}
int main(int argc, char **argv)
{
sysarg_t baud = 38400;
service_id_t svc_id;
char *serial_port_name = NULL;
int arg = 1;
int rc;
isdv4_event_fn event_fn = emit_event;
if (argc > arg && str_test_prefix(argv[arg], "--baud=")) {
size_t arg_offset = str_lsize(argv[arg], 7);
char* arg_str = argv[arg] + arg_offset;
if (str_length(arg_str) == 0) {
fprintf(stderr, "--baud requires an argument\n");
syntax_print();
return 1;
}
char *endptr;
baud = strtol(arg_str, &endptr, 10);
if (*endptr != '\0') {
fprintf(stderr, "Invalid value for baud\n");
syntax_print();
return 1;
}
arg++;
}
if (argc > arg && str_cmp(argv[arg], "--print-events") == 0) {
event_fn = print_and_emit_event;
arg++;
}
if (argc > arg) {
serial_port_name = argv[arg];
rc = loc_service_get_id(serial_port_name, &svc_id, 0);
if (rc != EOK) {
fprintf(stderr, "Cannot find device service %s\n",
argv[arg]);
return 1;
}
arg++;
}
else {
category_id_t serial_cat_id;
rc = loc_category_get_id("serial", &serial_cat_id, 0);
if (rc != EOK) {
fprintf(stderr, "Failed getting id of category "
"'serial'\n");
return 1;
}
service_id_t *svc_ids;
size_t svc_count;
rc = loc_category_get_svcs(serial_cat_id, &svc_ids, &svc_count); if (rc != EOK) {
fprintf(stderr, "Failed getting list of services\n");
return 1;
}
if (svc_count == 0) {
fprintf(stderr, "No service in category 'serial'\n");
free(svc_ids);
return 1;
}
svc_id = svc_ids[0];
rc = loc_service_get_name(svc_id, &serial_port_name);
if (rc != EOK) {
fprintf(stderr, "Failed getting name of serial service\n");
return 1;
}
free(svc_ids);
}
if (argc > arg) {
fprintf(stderr, "Too many arguments\n");
syntax_print();
return 1;
}
fibril_mutex_initialize(&client_mutex);
printf(NAME ": Using serial port %s\n", serial_port_name);
async_sess_t *sess = loc_service_connect(svc_id, INTERFACE_DDF,
IPC_FLAG_BLOCKING);
if (!sess) {
fprintf(stderr, "Failed connecting to service\n");
}
async_exch_t *exch = async_exchange_begin(sess);
rc = async_req_4_0(exch, SERIAL_SET_COM_PROPS, baud,
SERIAL_NO_PARITY, 8, 1);
async_exchange_end(exch);
if (rc != EOK) {
fprintf(stderr, "Failed setting serial properties\n");
return 2;
}
rc = isdv4_init(&state, sess, event_fn);
if (rc != EOK) {
fprintf(stderr, "Failed initializing isdv4 state");
return 2;
}
rc = isdv4_init_tablet(&state);
if (rc != EOK) {
fprintf(stderr, "Failed initializing tablet");
return 2;
}
printf("Tablet information:\n");
printf(" Stylus: %ux%u pressure: %u tilt: ", state.stylus_max_x,
state.stylus_max_y, state.stylus_max_pressure);
if (state.stylus_tilt_supported) {
printf("%ux%u\n", state.stylus_max_xtilt, state.stylus_max_ytilt);
}
else {
printf("not supported\n");
}
printf(" Touch: %ux%u type: %s\n", state.touch_max_x, state.touch_max_y,
touch_type(state.touch_type));
fid_t fibril = fibril_create(read_fibril, NULL);
/* From this on, state is to be used only by read_fibril */
fibril_add_ready(fibril);
async_set_fallback_port_handler(mouse_connection, NULL);
rc = loc_server_register(NAME);
if (rc != EOK) {
printf("%s: Unable to register driver.\n", NAME);
return rc;
}
service_id_t service_id;
char *service_name;
rc = asprintf(&service_name, "mouse/isdv4-%" PRIun, svc_id);
if (rc < 0) {
printf(NAME ": Unable to create service name\n");
return rc;
}
rc = loc_service_register(service_name, &service_id);
if (rc != EOK) {
printf(NAME ": Unable to register service %s.\n", service_name);
return rc;
}
category_id_t mouse_category;
rc = loc_category_get_id("mouse", &mouse_category, IPC_FLAG_BLOCKING);
if (rc != EOK) {
printf(NAME ": Unable to get mouse category id.\n");
}
else {
rc = loc_service_add_to_cat(service_id, mouse_category);
if (rc != EOK) {
printf(NAME ": Unable to add device to mouse category.\n");
}
}
printf("%s: Accepting connections\n", NAME);
task_retval(0);
async_manager();
/* Not reached */
return 0;
}
static void udp_sock_socket(udp_client_t *client, ipc_callid_t callid, ipc_call_t call)
{
udp_sockdata_t *sock;
socket_core_t *sock_core;
int sock_id;
int rc;
ipc_call_t answer;
log_msg(LVL_DEBUG, "udp_sock_socket()");
sock = calloc(sizeof(udp_sockdata_t), 1);
if (sock == NULL) {
async_answer_0(callid, ENOMEM);
return;
}
fibril_mutex_initialize(&sock->lock);
sock->client = client;
sock->recv_buffer_used = 0;
sock->recv_error = UDP_EOK;
fibril_mutex_initialize(&sock->recv_buffer_lock);
fibril_condvar_initialize(&sock->recv_buffer_cv);
rc = udp_uc_create(&sock->assoc);
if (rc != EOK) {
free(sock);
async_answer_0(callid, rc);
return;
}
sock->recv_fibril = fibril_create(udp_sock_recv_fibril, sock);
if (sock->recv_fibril == 0) {
udp_uc_destroy(sock->assoc);
free(sock);
async_answer_0(callid, ENOMEM);
return;
}
sock_id = SOCKET_GET_SOCKET_ID(call);
rc = socket_create(&client->sockets, client->sess, sock, &sock_id);
if (rc != EOK) {
fibril_destroy(sock->recv_fibril);
udp_uc_destroy(sock->assoc);
free(sock);
async_answer_0(callid, rc);
return;
}
fibril_add_ready(sock->recv_fibril);
sock_core = socket_cores_find(&client->sockets, sock_id);
assert(sock_core != NULL);
sock->sock_core = sock_core;
SOCKET_SET_SOCKET_ID(answer, sock_id);
SOCKET_SET_DATA_FRAGMENT_SIZE(answer, UDP_FRAGMENT_SIZE);
SOCKET_SET_HEADER_SIZE(answer, sizeof(udp_header_t));
async_answer_3(callid, EOK, IPC_GET_ARG1(answer),
IPC_GET_ARG2(answer), IPC_GET_ARG3(answer));
}
int main(int argc, char *argv[])
{
int rc;
int argi;
rc = inetping_init(&ev_ops);
if (rc != EOK) {
printf(NAME ": Failed connecting to internet ping service "
"(%d).\n", rc);
return 1;
}
argi = 1;
if (argi < argc && str_cmp(argv[argi], "-r") == 0) {
ping_repeat = true;
++argi;
} else {
ping_repeat = false;
}
if (argc - argi != 1) {
print_syntax();
return 1;
}
/* Parse destination address */
rc = addr_parse(argv[argi], &dest_addr);
if (rc != EOK) {
printf(NAME ": Invalid address format.\n");
print_syntax();
return 1;
}
/* Determine source address */
rc = inetping_get_srcaddr(&dest_addr, &src_addr);
if (rc != EOK) {
printf(NAME ": Failed determining source address.\n");
return 1;
}
fid_t fid;
if (ping_repeat) {
fid = fibril_create(transmit_fibril, NULL);
if (fid == 0) {
printf(NAME ": Failed creating transmit fibril.\n");
return 1;
}
fibril_add_ready(fid);
fid = fibril_create(input_fibril, NULL);
if (fid == 0) {
printf(NAME ": Failed creating input fibril.\n");
return 1;
}
fibril_add_ready(fid);
} else {
ping_send(1);
}
fibril_mutex_lock(&done_lock);
rc = EOK;
while (!done && rc != ETIMEOUT) {
rc = fibril_condvar_wait_timeout(&done_cv, &done_lock,
ping_repeat ? 0 : PING_TIMEOUT);
}
fibril_mutex_unlock(&done_lock);
if (rc == ETIMEOUT) {
printf(NAME ": Echo request timed out.\n");
return 1;
}
return 0;
}