/*
- * Copyright (c) 2007-2012 Nicira Networks.
+ * Copyright (c) 2007-2012 Nicira, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
#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)
#endif
}
-/*
- * Enforces, mutual exclusion with the Linux bridge module, by declaring and
- * exporting br_should_route_hook. Because the bridge module also exports the
- * same symbol, the module loader will refuse to load both modules at the same
- * time (e.g. "bridge: exports duplicate symbol br_should_route_hook (owned by
- * openvswitch_mod)").
- *
- * Before Linux 2.6.36, Open vSwitch cannot safely coexist with the Linux
- * bridge module, so openvswitch_mod uses this macro in those versions. In
- * Linux 2.6.36 and later, Open vSwitch can coexist with the bridge module, but
- * it makes no sense to load both bridge and brcompat_mod, so brcompat_mod uses
- * this macro in those versions.
- *
- * The use of "typeof" here avoids the need to track changes in the type of
- * br_should_route_hook over various kernel versions.
- */
-#define BRIDGE_MUTUAL_EXCLUSION \
- typeof(br_should_route_hook) br_should_route_hook; \
- EXPORT_SYMBOL(br_should_route_hook)
-
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32)
#define GENL_SOCK(net) (genl_sock)
#define SET_NETNSOK
#define SET_NETNSOK .netnsok = true,
#endif
+#ifdef HAVE_PARALLEL_OPS
+#define SET_PARALLEL_OPS .parallel_ops = true,
+#else
+#define SET_PARALLEL_OPS
+#endif
+
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+#ifdef CONFIG_NETFILTER
+static inline u32 skb_get_mark(struct sk_buff *skb)
+{
+ return skb->nfmark;
+}
+
+static inline void skb_set_mark(struct sk_buff *skb, u32 mark)
+{
+ skb->nfmark = mark;
+}
+#else /* CONFIG_NETFILTER */
+static inline u32 skb_get_mark(struct sk_buff *skb)
+{
+ return 0;
+}
+
+static inline void skb_set_mark(struct sk_buff *skb, u32 mark)
+{
+}
+#endif
+#else /* before 2.6.20 */
+static inline u32 skb_get_mark(struct sk_buff *skb)
+{
+ return skb->mark;
+}
+
+static inline void skb_set_mark(struct sk_buff *skb, u32 mark)
+{
+ skb->mark = mark;
+}
+#endif /* after 2.6.20 */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
+#define rt_dst(rt) (rt->dst)
+#else
+#define rt_dst(rt) (rt->u.dst)
+#endif
+
+#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
+
+static inline struct rtable *find_route(struct net *net,
+ __be32 *saddr, __be32 daddr,
+ u8 ipproto, u8 tos, u32 skb_mark)
+{
+ 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,
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+ .fwmark = skb_mark,
+#endif
+ .tos = RT_TOS(tos) } },
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+ .mark = skb_mark,
+#endif
+ .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 */