+/**
+ * Initiate segment manager cleanup
+ *
+ * @param sm segment manager to be freed
+ */
+void segment_manager_init_free (segment_manager_t * sm);
+segment_manager_t *segment_manager_get (u32 index);
+segment_manager_t *segment_manager_get_if_valid (u32 index);
+u32 segment_manager_index (segment_manager_t * sm);
+
+int segment_manager_add_segment (segment_manager_t * sm, u32 segment_size);
+void segment_manager_del_segment (segment_manager_t * sm,
+ fifo_segment_t * fs);
+fifo_segment_t *segment_manager_get_segment (segment_manager_t * sm,
+ u32 segment_index);
+fifo_segment_t *segment_manager_get_segment_w_handle (u64 sh);
+fifo_segment_t *segment_manager_get_segment_w_lock (segment_manager_t * sm,
+ u32 segment_index);
+int segment_manager_add_first_segment (segment_manager_t * sm,
+ u32 segment_size);
+u64 segment_manager_make_segment_handle (u32 segment_manager_index,
+ u32 segment_index);
+u64 segment_manager_segment_handle (segment_manager_t * sm,
+ fifo_segment_t * segment);
+void segment_manager_segment_reader_unlock (segment_manager_t * sm);
+void segment_manager_segment_writer_unlock (segment_manager_t * sm);
+
+int segment_manager_alloc_session_fifos (segment_manager_t * sm,
+ svm_fifo_t ** rx_fifo,
+ svm_fifo_t ** tx_fifo);
+int segment_manager_try_alloc_fifos (fifo_segment_t * fs,
+ u32 rx_fifo_size, u32 tx_fifo_size,
+ svm_fifo_t ** rx_fifo,
+ svm_fifo_t ** tx_fifo);
+void segment_manager_dealloc_fifos (svm_fifo_t * rx_fifo,
+ svm_fifo_t * tx_fifo);
+
+/**
+ * Grows fifo owned by segment manager
+ *
+ * @param sm segment manager that owns the fifo
+ * @param f fifo to be grown
+ * @param size amount of bytes to add to fifo
+ * @return 0 on success, negative number otherwise
+ */
+int segment_manager_grow_fifo (segment_manager_t * sm, svm_fifo_t * f,
+ u32 size);
+
+/**
+ * Request to shrink fifo owned by segment manager
+ *
+ * If this is not called by the producer, no attempt is made to reduce the
+ * size until the producer tries to enqueue more data. To collect the chunks
+ * that are to be removed call @ref segment_manager_collect_fifo_chunks
+ *
+ * Size reduction does not affect fifo chunk boundaries. Therefore chunks are
+ * not split and the amount of bytes to be removed can be equal to or less
+ * than what was requested.
+ *
+ * @param sm segment manager that owns the fifo
+ * @param f fifo to be shrunk
+ * @param size amount of bytes to remove from fifo
+ * @param is_producer flag that indicates is caller is the producer for the
+ * fifo.
+ * @return actual number of bytes to be removed
+ */
+int segment_manager_shrink_fifo (segment_manager_t * sm, svm_fifo_t * f,
+ u32 size, u8 is_producer);