session: add support for memfd segments

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

diff --git a/src/svm/svm_fifo_segment.h b/src/svm/svm_fifo_segment.h
index 68bb4d3..0e86c25 100644 (file)
--- a/src/svm/svm_fifo_segment.h
+++ b/src/svm/svm_fifo_segment.h
@@ -15,8 +15,8 @@
 #ifndef __included_ssvm_fifo_segment_h__
 #define __included_ssvm_fifo_segment_h__
 
-#include <svm/svm_fifo.h>
 #include <svm/ssvm.h>
+#include <svm/svm_fifo.h>
 #include <vppinfra/lock.h>
 
 typedef enum
@@ -27,15 +27,21 @@ typedef enum
   FIFO_SEGMENT_N_FREELISTS
 } svm_fifo_segment_freelist_t;
 
-#define FIFO_SEGMENT_MIN_FIFO_SIZE 2048
+#define FIFO_SEGMENT_MIN_FIFO_SIZE 4096
 #define FIFO_SEGMENT_MAX_FIFO_SIZE (8<<20)     /* 8mb max fifo size */
-#define FIFO_SEGMENT_ALLOC_CHUNK_SIZE 32       /* allocation quantum */
+#define FIFO_SEGMENT_ALLOC_CHUNK_SIZE 32       /* Allocation quantum */
+
+#define FIFO_SEGMENT_F_IS_PRIVATE      1 << 0  /* Private segment */
+#define FIFO_SEGMENT_F_IS_MAIN_HEAP    1 << 1  /* Segment is main heap */
+#define FIFO_SEGMENT_F_IS_PREALLOCATED 1 << 2  /* Segment is preallocated */
+#define FIFO_SEGMENT_F_WILL_DELETE     1 << 3  /* Segment will be removed */
 
 typedef struct
 {
   svm_fifo_t *fifos;           /**< Linked list of active RX fifos */
-  u8 *segment_name;            /**< Segment name */
   svm_fifo_t **free_fifos;     /**< Freelists, by fifo size  */
+  u32 n_active_fifos;          /**< Number of active fifos */
+  u8 flags;                    /**< Segment flags */
 } svm_fifo_segment_header_t;
 
 typedef struct
@@ -59,6 +65,7 @@ extern svm_fifo_segment_main_t svm_fifo_segment_main;
 
 typedef struct
 {
+  ssvm_segment_type_t segment_type;
   char *segment_name;
   u32 segment_size;
   u32 *new_segment_indices;
@@ -66,14 +73,15 @@ typedef struct
   u32 tx_fifo_size;
   u32 preallocated_fifo_pairs;
   u32 private_segment_count;
-  u32 private_segment_size;
+  u32 seg_protected_space;
+  int memfd_fd;
 } svm_fifo_segment_create_args_t;
 
 static inline svm_fifo_segment_private_t *
-svm_fifo_get_segment (u32 segment_index)
+svm_fifo_segment_get_segment (u32 segment_index)
 {
   svm_fifo_segment_main_t *ssm = &svm_fifo_segment_main;
-  return vec_elt_at_index (ssm->segments, segment_index);
+  return pool_elt_at_index (ssm->segments, segment_index);
 }
 
 static inline u8
@@ -112,6 +120,16 @@ void svm_fifo_segment_free_fifo (svm_fifo_segment_private_t * s,
                                 svm_fifo_segment_freelist_t index);
 void svm_fifo_segment_init (u64 baseva, u32 timeout_in_seconds);
 u32 svm_fifo_segment_index (svm_fifo_segment_private_t * s);
+u32 svm_fifo_segment_num_fifos (svm_fifo_segment_private_t * fifo_segment);
+u32 svm_fifo_segment_num_free_fifos (svm_fifo_segment_private_t *
+                                    fifo_segment, u32 fifo_size_in_bytes);
+void svm_fifo_segment_info (svm_fifo_segment_private_t * seg, uword * address,
+                           u64 * size);
+
+svm_fifo_segment_private_t *svm_fifo_segment_segments_pool (void);
+
+format_function_t format_svm_fifo_segment;
+format_function_t format_svm_fifo_segment_type;
 
 #endif /* __included_ssvm_fifo_segment_h__ */