/** SEND user call */
tcp_error_t tcp_uc_send(tcp_conn_t *conn, void *data, size_t size,
xflags_t flags)
{
size_t buf_free;
size_t xfer_size;
log_msg(LOG_DEFAULT, LVL_DEBUG, "%s: tcp_uc_send()", conn->name);
tcp_conn_lock(conn);
if (conn->cstate == st_closed) {
tcp_conn_unlock(conn);
return TCP_ENOTEXIST;
}
if (conn->cstate == st_listen) {
/* Change connection to active */
tcp_conn_sync(conn);
}
if (conn->snd_buf_fin) {
tcp_conn_unlock(conn);
return TCP_ECLOSING;
}
while (size > 0) {
buf_free = conn->snd_buf_size - conn->snd_buf_used;
while (buf_free == 0 && !conn->reset) {
log_msg(LOG_DEFAULT, LVL_DEBUG, "%s: buf_free == 0, waiting.",
conn->name);
fibril_condvar_wait(&conn->snd_buf_cv, &conn->lock);
buf_free = conn->snd_buf_size - conn->snd_buf_used;
}
if (conn->reset) {
tcp_conn_unlock(conn);
return TCP_ERESET;
}
xfer_size = min(size, buf_free);
/* Copy data to buffer */
memcpy(conn->snd_buf + conn->snd_buf_used, data, xfer_size);
data += xfer_size;
conn->snd_buf_used += xfer_size;
size -= xfer_size;
tcp_tqueue_new_data(conn);
}
tcp_tqueue_new_data(conn);
tcp_conn_unlock(conn);
return TCP_EOK;
}
/** CLOSE user call */
tcp_error_t tcp_uc_close(tcp_conn_t *conn)
{
log_msg(LOG_DEFAULT, LVL_DEBUG, "%s: tcp_uc_close(%p)", conn->name,
conn);
tcp_conn_lock(conn);
if (conn->cstate == st_closed) {
log_msg(LOG_DEFAULT, LVL_DEBUG, "tcp_uc_close - ENOTEXIST");
tcp_conn_unlock(conn);
return TCP_ENOTEXIST;
}
if (conn->cstate == st_listen || conn->cstate == st_syn_sent) {
log_msg(LOG_DEFAULT, LVL_DEBUG, "tcp_uc_close - listen/syn_sent");
tcp_conn_reset(conn);
tcp_conn_unlock(conn);
return TCP_EOK;
}
if (conn->snd_buf_fin) {
log_msg(LOG_DEFAULT, LVL_DEBUG, "tcp_uc_close - ECLOSING");
tcp_conn_unlock(conn);
return TCP_ECLOSING;
}
log_msg(LOG_DEFAULT, LVL_DEBUG, "tcp_uc_close - set snd_buf_fin");
conn->snd_buf_fin = true;
tcp_tqueue_new_data(conn);
tcp_conn_unlock(conn);
return TCP_EOK;
}
/** CLOSE user call */
tcp_error_t tcp_uc_close(tcp_conn_t *conn)
{
log_msg(LOG_DEFAULT, LVL_DEBUG, "%s: tcp_uc_close()", conn->name);
fibril_mutex_lock(&conn->lock);
if (conn->cstate == st_closed) {
fibril_mutex_unlock(&conn->lock);
return TCP_ENOTEXIST;
}
if (conn->snd_buf_fin) {
fibril_mutex_unlock(&conn->lock);
return TCP_ECLOSING;
}
conn->snd_buf_fin = true;
tcp_tqueue_new_data(conn);
fibril_mutex_unlock(&conn->lock);
return TCP_EOK;
}
