X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fsvm%2Fssvm.h;h=1c0373f126c3cdea6479152c695a2c09130c7d8f;hb=c5df8c71c;hp=a181f2ef864884ef4c187144c7a8a025df3da0a9;hpb=d3e83a9c82b4a57c24061828db6a309692f7f2d4;p=vpp.git

diff --git a/src/svm/ssvm.h b/src/svm/ssvm.h
index a181f2ef864..1c0373f126c 100644
--- a/src/svm/ssvm.h
+++ b/src/svm/ssvm.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Copyright (c) 2015-2019 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
@@ -37,7 +37,6 @@
 #include <vppinfra/heap.h>
 #include <vppinfra/pool.h>
 #include <vppinfra/format.h>
-#include <vppinfra/linux/syscall.h>
 
 #ifndef MMAP_PAGESIZE
 #define MMAP_PAGESIZE (clib_mem_get_page_size())
@@ -45,6 +44,14 @@
 
 #define SSVM_N_OPAQUE 7
 
+typedef enum ssvm_segment_type_
+{
+  SSVM_SEGMENT_SHM = 0,
+  SSVM_SEGMENT_MEMFD,
+  SSVM_SEGMENT_PRIVATE,
+  SSVM_N_SEGMENT_TYPES		/**< Private segments */
+} ssvm_segment_type_t;
+
 typedef struct
 {
   /* Spin-lock */
@@ -57,9 +64,9 @@ typedef struct
   void *heap;
 
   /* Segment must be mapped at this address, or no supper */
-  u64 ssvm_va;
+  uword ssvm_va;
   /* The actual mmap size */
-  u64 ssvm_size;
+  uword ssvm_size;
   u32 master_pid;
   u32 slave_pid;
   u8 *name;
@@ -68,8 +75,7 @@ typedef struct
   /* Set when the master application thinks it's time to make the donuts */
   volatile u32 ready;
 
-  /* Needed to make unique MAC addresses, etc. */
-  u32 master_index;
+  ssvm_segment_type_t type;
 } ssvm_shared_header_t;
 
 typedef struct
@@ -81,8 +87,11 @@ typedef struct
   uword requested_va;
   int i_am_master;
 
-  /* Needed by memfd segments */
-  int fd;
+  union
+  {
+    int fd;			/**< memfd segments */
+    int attach_timeout;		/**< shm segments attach timeout (sec) */
+  };
 } ssvm_private_t;
 
 always_inline void
@@ -94,7 +103,7 @@ ssvm_lock (ssvm_shared_header_t * h, u32 my_pid, u32 tag)
       return;
     }
 
-  while (__sync_lock_test_and_set (&h->lock, 1))
+  while (clib_atomic_test_and_set (&h->lock))
     ;
 
   h->owner_pid = my_pid;
@@ -105,7 +114,7 @@ ssvm_lock (ssvm_shared_header_t * h, u32 my_pid, u32 tag)
 always_inline void
 ssvm_lock_non_recursive (ssvm_shared_header_t * h, u32 tag)
 {
-  while (__sync_lock_test_and_set (&h->lock, 1))
+  while (clib_atomic_test_and_set (&h->lock))
     ;
 
   h->tag = tag;
@@ -145,6 +154,18 @@ ssvm_pop_heap (void *oldheap)
   clib_mem_set_heap (oldheap);
 }
 
+static inline void *
+ssvm_mem_alloc (ssvm_private_t * ssvm, uword size)
+{
+  u8 *oldheap;
+  void *rv;
+
+  oldheap = clib_mem_set_heap (ssvm->sh->heap);
+  rv = clib_mem_alloc (size);
+  clib_mem_set_heap (oldheap);
+  return (rv);
+}
+
 #define foreach_ssvm_api_error                  \
 _(NO_NAME, "No shared segment name", -100)      \
 _(NO_SIZE, "Size not set (master)", -101)       \
@@ -162,14 +183,25 @@ typedef enum
 
 #define SSVM_API_ERROR_NO_NAME	(-10)
 
-int ssvm_master_init (ssvm_private_t * ssvm, u32 master_index);
-int ssvm_slave_init (ssvm_private_t * ssvm, int timeout_in_seconds);
+int ssvm_master_init (ssvm_private_t * ssvm, ssvm_segment_type_t type);
+int ssvm_slave_init (ssvm_private_t * ssvm, ssvm_segment_type_t type);
 void ssvm_delete (ssvm_private_t * ssvm);
 
-int ssvm_master_init_memfd (ssvm_private_t * memfd, u32 master_index);
+int ssvm_master_init_shm (ssvm_private_t * ssvm);
+int ssvm_slave_init_shm (ssvm_private_t * ssvm);
+void ssvm_delete_shm (ssvm_private_t * ssvm);
+
+int ssvm_master_init_memfd (ssvm_private_t * memfd);
 int ssvm_slave_init_memfd (ssvm_private_t * memfd);
 void ssvm_delete_memfd (ssvm_private_t * memfd);
 
+int ssvm_master_init_private (ssvm_private_t * ssvm);
+int ssvm_slave_init_private (ssvm_private_t * ssvm);
+void ssvm_delete_private (ssvm_private_t * ssvm);
+
+ssvm_segment_type_t ssvm_type (const ssvm_private_t * ssvm);
+u8 *ssvm_name (const ssvm_private_t * ssvm);
+
 #endif /* __included_ssvm_h__ */
 
 /*