/*
- * Copyright (c) 2011 Nicira Networks.
- * Distributed under the terms of the GNU GPL version 2.
+ * Copyright (c) 2007-2012 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/route.h>
+#include <net/xfrm.h>
-#ifndef HAVE_NLA_NUL_STRING
-static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
+static inline void skb_clear_rxhash(struct sk_buff *skb)
{
- char *s;
- int len;
- if (!attr)
- return 0;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
+ skb->rxhash = 0;
+#endif
+}
- len = nla_len(attr);
- if (len >= maxlen)
- return -EINVAL;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0)
+#define GROUP_ID(grp) 0
+#else
+#define GROUP_ID(grp) ((grp)->id)
+#endif
- s = nla_data(attr);
- if (s[len - 1] != '\0')
- 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
- return 0;
-}
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
+#define inet_sport(sk) (inet_sk(sk)->sport)
#else
-static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
+#define inet_sport(sk) (inet_sk(sk)->inet_sport)
+#endif
+
+static inline struct rtable *find_route(struct net *net,
+ __be32 *saddr, __be32 daddr,
+ u8 ipproto, u8 tos, u32 skb_mark)
{
- return 0;
-}
-#endif /* !HAVE_NLA_NUL_STRING */
+ struct rtable *rt;
+ /* Tunnel configuration keeps DSCP part of TOS bits, But Linux
+ * router expect RT_TOS bits only. */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)
+ struct flowi fl = { .nl_u = { .ip4_u = {
+ .daddr = daddr,
+ .saddr = *saddr,
+ .tos = RT_TOS(tos) } },
+ .mark = skb_mark,
+ .proto = ipproto };
+ if (unlikely(ip_route_output_key(net, &rt, &fl)))
+ return ERR_PTR(-EADDRNOTAVAIL);
+ *saddr = fl.nl_u.ip4_u.saddr;
+ return rt;
+#else
+ struct flowi4 fl = { .daddr = daddr,
+ .saddr = *saddr,
+ .flowi4_tos = RT_TOS(tos),
+ .flowi4_mark = skb_mark,
+ .flowi4_proto = ipproto };
+
+ rt = ip_route_output_key(net, &fl);
+ *saddr = fl.saddr;
+ return rt;
+#endif
+}
#endif /* compat.h */