session: support local sessions and deprecate redirects

[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 793fa7c..1872da1 100644 (file)
--- a/src/svm/svm_fifo_segment.h
+++ b/src/svm/svm_fifo_segment.h
@@ -15,13 +15,31 @@
 #ifndef __included_ssvm_fifo_segment_h__
 #define __included_ssvm_fifo_segment_h__
 
-#include "svm_fifo.h"
-#include "ssvm.h"
+#include <svm/ssvm.h>
+#include <svm/svm_fifo.h>
+#include <vppinfra/lock.h>
+
+typedef enum
+{
+  FIFO_SEGMENT_FREELIST_NONE = -1,
+  FIFO_SEGMENT_RX_FREELIST = 0,
+  FIFO_SEGMENT_TX_FREELIST,
+  FIFO_SEGMENT_N_FREELISTS
+} svm_fifo_segment_freelist_t;
+
+#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_F_IS_PREALLOCATED (1 << 0)
+#define FIFO_SEGMENT_F_WILL_DELETE     (1 << 1)
 
 typedef struct
 {
-  volatile svm_fifo_t **fifos;
-  u8 *segment_name;
+  svm_fifo_t *fifos;           /**< Linked list of active RX fifos */
+  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
@@ -32,6 +50,8 @@ typedef struct
 
 typedef struct
 {
+  volatile u32 lock;
+
   /** pool of segments */
   svm_fifo_segment_private_t *segments;
   /* Where to put the next one */
@@ -43,40 +63,63 @@ 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_index;
+  u32 *new_segment_indices;
+  int memfd_fd;
 } svm_fifo_segment_create_args_t;
 
+#define svm_fifo_segment_flags(_seg) _seg->h->flags
+
 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);
 }
 
-#define foreach_ssvm_fifo_segment_api_error             \
-_(OUT_OF_SPACE, "Out of space in segment", -200)
+static inline u8
+svm_fifo_segment_has_fifos (svm_fifo_segment_private_t * fifo_segment)
+{
+  return fifo_segment->h->fifos != 0;
+}
 
-typedef enum
+static inline svm_fifo_t *
+svm_fifo_segment_get_fifo_list (svm_fifo_segment_private_t * fifo_segment)
 {
-#define _(n,s,c) SSVM_FIFO_SEGMENT_API_ERROR_##n = c,
-  foreach_ssvm_fifo_segment_api_error
-#undef _
-} ssvm_fifo_segment_api_error_enum_t;
+  return fifo_segment->h->fifos;
+}
 
+int svm_fifo_segment_init (svm_fifo_segment_private_t * s);
 int svm_fifo_segment_create (svm_fifo_segment_create_args_t * a);
+int svm_fifo_segment_create_process_private (svm_fifo_segment_create_args_t
+                                            * a);
+void svm_fifo_segment_preallocate_fifo_pairs (svm_fifo_segment_private_t * s,
+                                             u32 rx_fifo_size,
+                                             u32 tx_fifo_size,
+                                             u32 * n_fifo_pairs);
 int svm_fifo_segment_attach (svm_fifo_segment_create_args_t * a);
 void svm_fifo_segment_delete (svm_fifo_segment_private_t * s);
 
 svm_fifo_t *svm_fifo_segment_alloc_fifo (svm_fifo_segment_private_t * s,
-                                        u32 data_size_in_bytes);
+                                        u32 data_size_in_bytes,
+                                        svm_fifo_segment_freelist_t index);
 void svm_fifo_segment_free_fifo (svm_fifo_segment_private_t * s,
-                                svm_fifo_t * f);
+                                svm_fifo_t * f,
+                                svm_fifo_segment_freelist_t index);
+void svm_fifo_segment_main_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);
 
-void svm_fifo_segment_init (u64 baseva, u32 timeout_in_seconds);
+svm_fifo_segment_private_t *svm_fifo_segment_segments_pool (void);
 
-u32 svm_fifo_segment_index (svm_fifo_segment_private_t * s);
+format_function_t format_svm_fifo_segment;
+format_function_t format_svm_fifo_segment_type;
 
 #endif /* __included_ssvm_fifo_segment_h__ */