map: Fix TCP MSS clamping for MAP-E traffic.

[vpp.git] / src / svm / ssvm.c

diff --git a/src/svm/ssvm.c b/src/svm/ssvm.c
index 2d9d1b3..a16965e 100644 (file)
--- a/src/svm/ssvm.c
+++ b/src/svm/ssvm.c
@@ -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:
@@ -80,7 +80,7 @@ ssvm_master_init_shm (ssvm_private_t * ssvm)
       return SSVM_API_ERROR_SET_SIZE;
     }
 
-  page_size = clib_mem_vm_get_page_size (ssvm_fd);
+  page_size = clib_mem_get_fd_page_size (ssvm_fd);
   if (ssvm->requested_va)
     {
       requested_va = ssvm->requested_va;
@@ -177,7 +177,7 @@ map_it:
   return SSVM_API_ERROR_SLAVE_TIMEOUT;
 
 re_map_it:
-  ssvm->requested_va = (u64) sh->ssvm_va;
+  ssvm->requested_va = sh->ssvm_va;
   ssvm->ssvm_size = sh->ssvm_size;
   munmap (sh, MMAP_PAGESIZE);
 
@@ -213,7 +213,7 @@ ssvm_delete_shm (ssvm_private_t * ssvm)
   vec_free (fn);
   vec_free (ssvm->name);
 
-  munmap ((void *) ssvm->requested_va, ssvm->ssvm_size);
+  munmap ((void *) ssvm->sh, ssvm->ssvm_size);
 }
 
 /**
@@ -290,7 +290,7 @@ ssvm_slave_init_memfd (ssvm_private_t * memfd)
 
   memfd->i_am_master = 0;
 
-  page_size = clib_mem_vm_get_page_size (memfd->fd);
+  page_size = clib_mem_get_fd_page_size (memfd->fd);
   if (!page_size)
     {
       clib_unix_warning ("page size unknown");
@@ -352,8 +352,8 @@ ssvm_master_init_private (ssvm_private_t * ssvm)
   u32 rnd_size = 0;
   u8 *heap;
 
-  rnd_size = (ssvm->ssvm_size + (pagesize - 1)) & ~(pagesize - 1);
-  rnd_size = clib_min (rnd_size, ((u64) 1 << 32) - pagesize);
+  rnd_size = clib_max (ssvm->ssvm_size + (pagesize - 1), ssvm->ssvm_size);
+  rnd_size &= ~(pagesize - 1);
 
 #if USE_DLMALLOC == 0
   {
@@ -370,6 +370,18 @@ ssvm_master_init_private (ssvm_private_t * ssvm)
   }
 #else
   heap = create_mspace (rnd_size, 1 /* locked */ );
+  if (heap == 0)
+    {
+      clib_unix_warning ("mheap alloc");
+      return -1;
+    }
+
+  mspace_disable_expand (heap);
+
+  /* Find actual size because mspace size is rounded up by dlmalloc */
+  struct dlmallinfo dlminfo;
+  dlminfo = mspace_mallinfo (heap);
+  rnd_size = dlminfo.fordblks;
 #endif
 
   ssvm->ssvm_size = rnd_size;
@@ -383,7 +395,9 @@ ssvm_master_init_private (ssvm_private_t * ssvm)
 
   clib_memset (sh, 0, sizeof (*sh));
   sh->heap = heap;
+  sh->ssvm_va = pointer_to_uword (heap);
   sh->type = SSVM_SEGMENT_PRIVATE;
+  sh->name = ssvm->name;
 
   return 0;
 }