summaryrefslogtreecommitdiff
path: root/net/xfrm/xfrm_hash.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/xfrm/xfrm_hash.c')
-rw-r--r--net/xfrm/xfrm_hash.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_hash.c b/net/xfrm/xfrm_hash.c
new file mode 100644
index 000000000..1e98bc0fe
--- /dev/null
+++ b/net/xfrm/xfrm_hash.c
@@ -0,0 +1,39 @@
+/* xfrm_hash.c: Common hash table code.
+ *
+ * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/xfrm.h>
+
+#include "xfrm_hash.h"
+
+struct hlist_head *xfrm_hash_alloc(unsigned int sz)
+{
+ struct hlist_head *n;
+
+ if (sz <= PAGE_SIZE)
+ n = kzalloc(sz, GFP_KERNEL);
+ else if (hashdist)
+ n = vzalloc(sz);
+ else
+ n = (struct hlist_head *)
+ __get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO,
+ get_order(sz));
+
+ return n;
+}
+
+void xfrm_hash_free(struct hlist_head *n, unsigned int sz)
+{
+ if (sz <= PAGE_SIZE)
+ kfree(n);
+ else if (hashdist)
+ vfree(n);
+ else
+ free_pages((unsigned long)n, get_order(sz));
+}