svm: allow mq attachments at random offsets

Type: feature

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ic373cd2c11272da539eb4b0db27227f36f2f9688

1 files changed, 33 insertions, 0 deletions

diff --git a/src/svm/fifo_segment.h b/src/svm/fifo_segment.h
index 006ffc40f63..195869a25dd 100644
--- a/src/svm/fifo_segment.h
+++ b/src/svm/fifo_segment.h
@@ -17,6 +17,7 @@
 
 #include <svm/ssvm.h>
 #include <svm/fifo_types.h>
+#include <svm/message_queue.h>
 #include <svm/svm_fifo.h>
 
 typedef enum
@@ -70,6 +71,7 @@ typedef struct
   uword max_byte_index;
   u8 n_slices;			/**< number of fifo segment slices */
   fifo_slice_private_t *slices; /**< private slice information */
+  svm_msg_q_t *mqs;		/**< private vec of attached mqs */
 } fifo_segment_t;
 
 typedef struct
@@ -130,6 +132,37 @@ void fifo_segment_attach_fifo (fifo_segment_t * fs, svm_fifo_t * f,
 			       u32 slice_index);
 
 /**
+ * Allocate message queue on segment
+ *
+ * @param fs		fifo segment for mq
+ * @param mq_index	index in private mqs vector to use to attach
+ * @param cfg		configuration for mq
+ * @return		attached message queue
+ */
+svm_msg_q_t *fifo_segment_msg_q_alloc (fifo_segment_t *fs, u32 mq_index,
+				       svm_msg_q_cfg_t *cfg);
+
+/**
+ *  Attach message queue at fifo segment offset
+ *
+ *  @param fs		fifo segment for mq
+ *  @param offset	offset for shared mq on the segment
+ *  @param mq_index	index in private mqs vector to use to attach
+ *  @return		attached message queue
+ */
+svm_msg_q_t *fifo_segment_msg_q_attach (fifo_segment_t *fs, uword offset,
+					u32 mq_index);
+
+/**
+ * Message queue offset on segment
+ *
+ * @param fs		fifo segment for mq
+ * @param mq_index	index of mq in private mqs vector
+ * @return		offset of the shared mq the private mq is attached to
+ */
+uword fifo_segment_msg_q_offset (fifo_segment_t *fs, u32 mq_index);
+
+/**
  * Try to preallocate fifo headers
  *
  * Tries to preallocate fifo headers and adds them to freelist.