vcl: support for eventfd mq signaling

[vpp.git] / src / vnet / session / segment_manager.h

diff --git a/src/vnet/session/segment_manager.h b/src/vnet/session/segment_manager.h
index 9b1d4cd..aae4f2e 100644 (file)
--- a/src/vnet/session/segment_manager.h
+++ b/src/vnet/session/segment_manager.h
@@ -17,7 +17,7 @@
 
 #include <vnet/vnet.h>
 #include <svm/svm_fifo_segment.h>
-#include <svm/queue.h>
+#include <svm/message_queue.h>
 #include <vlibmemory/api.h>
 #include <vppinfra/lock.h>
 #include <vppinfra/valloc.h>
@@ -27,21 +27,19 @@ typedef struct _segment_manager_properties
   /** Session fifo sizes.  */
   u32 rx_fifo_size;
   u32 tx_fifo_size;
-
-  /** Preallocated pool sizes */
-//  u32 preallocated_fifo_pairs;
+  u32 evt_q_size;
 
   /** Configured additional segment size */
   u32 add_segment_size;
 
-  /** Flag that indicates if additional segments should be created */
-  u8 add_segment;
+  /** Flags */
+  u8 add_segment:1;            /**< can add new segments */
+  u8 use_mq_eventfd:1;         /**< use eventfds for mqs */
+  u8 reserved:6;
 
   /** Segment type: if set to SSVM_N_TYPES, private segments are used */
   ssvm_segment_type_t segment_type;
 
-  /** Use one or more private mheaps, instead of the global heap */
-//  u32 private_segment_count;
 } segment_manager_properties_t;
 
 typedef struct _segment_manager
@@ -65,7 +63,7 @@ typedef struct _segment_manager
   /**
    * App event queue allocated in first segment
    */
-  svm_queue_t *event_queue;
+  svm_msg_q_t *event_queue;
 } segment_manager_t;
 
 #define segment_manager_foreach_segment_w_lock(VAR, SM, BODY)          \
@@ -118,7 +116,7 @@ segment_manager_index (segment_manager_t * sm)
   return sm - segment_manager_main.segment_managers;
 }
 
-always_inline svm_queue_t *
+always_inline svm_msg_q_t *
 segment_manager_event_queue (segment_manager_t * sm)
 {
   return sm->event_queue;
@@ -126,7 +124,7 @@ segment_manager_event_queue (segment_manager_t * sm)
 
 segment_manager_t *segment_manager_new ();
 int segment_manager_init (segment_manager_t * sm, u32 first_seg_size,
-                         u32 evt_q_size, u32 prealloc_fifo_pairs);
+                         u32 prealloc_fifo_pairs);
 
 svm_fifo_segment_private_t *segment_manager_get_segment (segment_manager_t *
                                                         sm,
@@ -134,6 +132,9 @@ svm_fifo_segment_private_t *segment_manager_get_segment (segment_manager_t *
 svm_fifo_segment_private_t
   * segment_manager_get_segment_w_lock (segment_manager_t * sm,
                                        u32 segment_index);
+int segment_manager_add_segment (segment_manager_t * sm, u32 segment_size);
+void segment_manager_del_segment (segment_manager_t * sm,
+                                 svm_fifo_segment_private_t * fs);
 void segment_manager_segment_reader_unlock (segment_manager_t * sm);
 void segment_manager_segment_writer_unlock (segment_manager_t * sm);
 
@@ -143,16 +144,20 @@ void segment_manager_del_sessions (segment_manager_t * sm);
 void segment_manager_del (segment_manager_t * sm);
 void segment_manager_init_del (segment_manager_t * sm);
 u8 segment_manager_has_fifos (segment_manager_t * sm);
-int
-segment_manager_alloc_session_fifos (segment_manager_t * sm,
-                                    svm_fifo_t ** server_rx_fifo,
-                                    svm_fifo_t ** server_tx_fifo,
-                                    u32 * fifo_segment_index);
-void
-segment_manager_dealloc_fifos (u32 svm_segment_index, svm_fifo_t * rx_fifo,
-                              svm_fifo_t * tx_fifo);
-svm_queue_t *segment_manager_alloc_queue (segment_manager_t * sm,
-                                         u32 queue_size);
+int segment_manager_alloc_session_fifos (segment_manager_t * sm,
+                                        svm_fifo_t ** server_rx_fifo,
+                                        svm_fifo_t ** server_tx_fifo,
+                                        u32 * fifo_segment_index);
+int segment_manager_try_alloc_fifos (svm_fifo_segment_private_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 (u32 segment_index, svm_fifo_t * rx_fifo,
+                                   svm_fifo_t * tx_fifo);
+u32 segment_manager_evt_q_expected_size (u32 q_size);
+svm_msg_q_t *segment_manager_alloc_queue (svm_fifo_segment_private_t * fs,
+                                         segment_manager_properties_t *
+                                         props);
 void segment_manager_dealloc_queue (segment_manager_t * sm, svm_queue_t * q);
 void segment_manager_app_detach (segment_manager_t * sm);