svm: allow mq attachments at random offsets

[vpp.git] / src / svm / fifo_segment.h

diff --git a/src/svm/fifo_segment.h b/src/svm/fifo_segment.h
index d3ce59c..195869a 100644 (file)
--- 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
@@ -67,7 +68,10 @@ typedef struct
 {
   ssvm_private_t ssvm;         /**< ssvm segment data */
   fifo_segment_header_t *h;    /**< fifo segment data */
+  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
@@ -94,6 +98,7 @@ int fifo_segment_create (fifo_segment_main_t * sm,
 int fifo_segment_attach (fifo_segment_main_t * sm,
                         fifo_segment_create_args_t * a);
 void fifo_segment_delete (fifo_segment_main_t * sm, fifo_segment_t * fs);
+void fifo_segment_cleanup (fifo_segment_t *fs);
 fifo_segment_t *fifo_segment_get_segment (fifo_segment_main_t * sm,
                                          u32 fs_index);
 u32 fifo_segment_index (fifo_segment_main_t * sm, fifo_segment_t * fs);
@@ -111,6 +116,8 @@ svm_fifo_t *fifo_segment_alloc_fifo_w_slice (fifo_segment_t * fs,
                                             u32 slice_index,
                                             u32 data_bytes,
                                             fifo_segment_ftype_t ftype);
+svm_fifo_t *fifo_segment_alloc_fifo_w_shared (fifo_segment_t *fs,
+                                             svm_fifo_shared_t *sf);
 
 /**
  * Free fifo allocated in fifo segment
@@ -124,6 +131,37 @@ void fifo_segment_detach_fifo (fifo_segment_t * fs, svm_fifo_t * f);
 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
  *
@@ -205,6 +243,14 @@ u8 fsh_has_reached_mem_limit (fifo_segment_header_t * fsh);
  */
 void fsh_reset_mem_limit (fifo_segment_header_t * fsh);
 
+/**
+ * Fifo segment reset mem limit flag
+ *
+ * @param fs            fifo segment
+ * @param size         size requested
+ * @return             pointer to memory allocated or 0
+ */
+void *fifo_segment_alloc (fifo_segment_t *fs, uword size);
 /**
  * Fifo segment allocated size
  *
@@ -227,16 +273,6 @@ uword fifo_segment_size (fifo_segment_t * fs);
  */
 uword fifo_segment_free_bytes (fifo_segment_t * fs);
 
-/**
- * Update fifo segment free bytes estimate
- *
- * Forces fifo segment free bytes estimate synchronization with underlying
- * memory allocator.
- *
- * @param fs           fifo segment
- */
-void fifo_segment_update_free_bytes (fifo_segment_t * fs);
-
 /**
  * Fifo segment number of cached bytes
  *