+int vcl_segment_attach_session (uword segment_handle, uword rxf_offset,
+ uword txf_offset, uword mq_offset, u8 is_ct,
+ vcl_session_t *s);
+int vcl_segment_attach_mq (uword segment_handle, uword mq_offset, u32 mq_index,
+ svm_msg_q_t **mq);
+int vcl_segment_discover_mqs (uword segment_handle, int *fds, u32 n_fds);
+