+int
+echo_attach_session (uword segment_handle, uword rxf_offset, uword txf_offset,
+ uword mq_offset, echo_session_t *s)
+{
+ svm_fifo_shared_t *rx_fifo, *tx_fifo;
+ echo_main_t *em = &echo_main;
+ u32 fs_index, eqs_index;
+ fifo_segment_t *fs;
+
+ fs_index = echo_segment_lookup (segment_handle);
+ if (fs_index == (u32) ~0)
+ {
+ ECHO_LOG (0, "ERROR: segment for session %u is not mounted!",
+ s->session_index);
+ return -1;
+ }
+
+ if (mq_offset != (uword) ~0)
+ {
+ eqs_index = echo_segment_lookup (ECHO_MQ_SEG_HANDLE);
+ ASSERT (eqs_index != (u32) ~0);
+ }
+
+ rx_fifo = uword_to_pointer (rxf_offset, svm_fifo_shared_t *);
+ tx_fifo = uword_to_pointer (txf_offset, svm_fifo_shared_t *);
+ rx_fifo->client_session_index = s->session_index;
+ tx_fifo->client_session_index = s->session_index;
+
+ clib_spinlock_lock (&em->segment_handles_lock);
+
+ fs = fifo_segment_get_segment (&em->segment_main, fs_index);
+ s->rx_fifo = fifo_segment_alloc_fifo_w_shared (fs, rx_fifo);
+ s->tx_fifo = fifo_segment_alloc_fifo_w_shared (fs, tx_fifo);
+
+ if (mq_offset != (uword) ~0)
+ {
+ fs = fifo_segment_get_segment (&em->segment_main, eqs_index);
+ s->vpp_evt_q =
+ fifo_segment_msg_q_attach (fs, mq_offset, rx_fifo->slice_index);
+ }
+
+ clib_spinlock_unlock (&em->segment_handles_lock);
+
+ return 0;
+}
+
+int
+echo_segment_attach_mq (uword segment_handle, uword mq_offset, u32 mq_index,
+ svm_msg_q_t **mq)
+{
+ echo_main_t *em = &echo_main;
+ fifo_segment_t *fs;
+ u32 fs_index;
+
+ fs_index = echo_segment_lookup (segment_handle);
+ if (fs_index == (u32) ~0)
+ {
+ ECHO_LOG (0, "ERROR: mq segment %lx for is not attached!",
+ segment_handle);
+ return -1;
+ }
+
+ clib_spinlock_lock (&em->segment_handles_lock);
+
+ fs = fifo_segment_get_segment (&em->segment_main, fs_index);
+ *mq = fifo_segment_msg_q_attach (fs, mq_offset, mq_index);
+
+ clib_spinlock_unlock (&em->segment_handles_lock);
+
+ return 0;
+}
+