ovsdb-server: Refactoring and clean up remote status reporting.

[cascardo/ovs.git] / datapath / compat.h

diff --git a/datapath/compat.h b/datapath/compat.h
index 4e05753..0e19051 100644 (file)
--- a/datapath/compat.h
+++ b/datapath/compat.h
@@ -1,46 +1,101 @@
 /*
- * Copyright (c) 2011 Nicira Networks.
- * Distributed under the terms of the GNU GPL version 2.
+ * Copyright (c) 2007-2015 Nicira, Inc.
  *
- * 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/in.h>
+#include <linux/in_route.h>
 #include <linux/netlink.h>
+#include <net/ip.h>
+#include <net/route.h>
+#include <net/xfrm.h>
+#include <net/netfilter/ipv6/nf_defrag_ipv6.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;
+#ifdef HAVE_GENL_MULTICAST_GROUP_WITH_ID
+#define GROUP_ID(grp)  ((grp)->id)
+#else
+#define GROUP_ID(grp)  0
+#endif
 
-       len = nla_len(attr);
-       if (len >= maxlen)
-               return -EINVAL;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
+#define rt_dst(rt) (rt->dst)
+#else
+#define rt_dst(rt) (rt->u.dst)
+#endif
 
-       s = nla_data(attr);
-       if (s[len - 1] != '\0')
-               return -EINVAL;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
+#define inet_sport(sk) (inet_sk(sk)->sport)
+#else
+#define inet_sport(sk) (inet_sk(sk)->inet_sport)
+#endif
 
-       return 0;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)
+static inline bool skb_encapsulation(struct sk_buff *skb)
+{
+       return skb->encapsulation;
 }
 #else
-static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
+#define skb_encapsulation(skb) false
+#endif
+
+#ifdef OVS_FRAGMENT_BACKPORT
+#ifdef HAVE_NF_IPV6_OPS_FRAGMENT
+static inline int __init ip6_output_init(void) { return 0; }
+static inline void ip6_output_exit(void) { }
+#else
+int __init ip6_output_init(void);
+void ip6_output_exit(void);
+#endif
+
+static inline int __init compat_init(void)
 {
+       int err;
+
+       err = ipfrag_init();
+       if (err)
+               return err;
+
+       err = nf_ct_frag6_init();
+       if (err)
+               goto error_ipfrag_exit;
+
+       err = ip6_output_init();
+       if (err)
+               goto error_frag6_exit;
+
        return 0;
-}
-#endif  /* !HAVE_NLA_NUL_STRING */
 
-static inline void skb_clear_rxhash(struct sk_buff *skb)
+error_frag6_exit:
+       nf_ct_frag6_cleanup();
+error_ipfrag_exit:
+       rpl_ipfrag_fini();
+       return err;
+}
+static inline void compat_exit(void)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
-       skb->rxhash = 0;
-#endif
+       ip6_output_exit();
+       nf_ct_frag6_cleanup();
+       rpl_ipfrag_fini();
 }
+#else
+static inline int __init compat_init(void) { return 0; }
+static inline void compat_exit(void) { }
+#endif
 
 #endif /* compat.h */