datapath: Reformat copyright messages.

[sliver-openvswitch.git] / datapath / compat.h

diff --git a/datapath/compat.h b/datapath/compat.h
index 84a222f..efad6a0 100644 (file)
--- a/datapath/compat.h
+++ b/datapath/compat.h
@@ -1,25 +1,56 @@
 /*
- * Copyright (c) 2009 Nicira Networks.
- * Distributed under the terms of the GNU GPL version 2.
+ * Copyright (c) 2007-2011 Nicira Networks.
  *
- * Significant portions of this file may be copied from parts of the Linux
- * kernel, by Linus Torvalds and others.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
  */
 
 #ifndef COMPAT_H
 #define COMPAT_H 1
 
-#include <linux/version.h>
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+#include <linux/netlink.h>
 
-#include "compat26.h"
+#ifndef HAVE_NLA_NUL_STRING
+static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
+{
+       char *s;
+       int len;
+       if (!attr)
+               return 0;
 
-#else
+       len = nla_len(attr);
+       if (len >= maxlen)
+               return -EINVAL;
 
-#include "compat24.h"
+       s = nla_data(attr);
+       if (s[len - 1] != '\0')
+               return -EINVAL;
 
+       return 0;
+}
+#else
+static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
+{
+       return 0;
+}
+#endif  /* !HAVE_NLA_NUL_STRING */
+
+static inline void skb_clear_rxhash(struct sk_buff *skb)
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
+       skb->rxhash = 0;
 #endif
-
+}
 
 #endif /* compat.h */