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);
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);