#include <linux/version.h>
#include_next <net/netlink.h>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
-/* Before v2.6.29, a NLA_NESTED attribute, if it was present, was not allowed
- * to be empty. However, OVS depends on the ability to accept empty
- * attributes. For example, a present but empty OVS_FLOW_ATTR_ACTIONS on
- * OVS_FLOW_CMD_SET replaces the existing set of actions by an empty "drop"
- * action, whereas a missing OVS_FLOW_ATTR_ACTIONS leaves the existing
- * actions, if any, unchanged.
- *
- * NLA_NESTED is different from NLA_UNSPEC in only two ways:
- *
- * - If the size of the nested attributes is zero, no further size checks
- * are performed.
- *
- * - If the size of the nested attributes is not zero and no length
- * parameter is specified the minimum size of nested attributes is
- * NLA_HDRLEN.
- *
- * nla_parse_nested() validates that there is at least enough space for
- * NLA_HDRLEN, so neither of these conditions are important, and we might
- * as well use NLA_UNSPEC with old kernels.
- */
-#undef NLA_NESTED
-#define NLA_NESTED NLA_UNSPEC
-#endif
-
-#ifndef NLA_PUT_BE16
-#define NLA_PUT_BE16(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, __be16, attrtype, value)
-#endif /* !NLA_PUT_BE16 */
-
-#ifndef NLA_PUT_BE32
-#define NLA_PUT_BE32(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, __be32, attrtype, value)
-#endif /* !NLA_PUT_BE32 */
-
-#ifndef NLA_PUT_BE64
-#define NLA_PUT_BE64(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, __be64, attrtype, value)
-#endif /* !NLA_PUT_BE64 */
-
#ifndef HAVE_NLA_GET_BE16
/**
* nla_get_be16 - return payload of __be16 attribute
}
#endif /* !HAVE_NLA_GET_BE16 */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
-/**
- * nla_get_be32 - return payload of __be32 attribute
- * @nla: __be32 netlink attribute
- */
-static inline __be32 nla_get_be32(const struct nlattr *nla)
-{
- return *(__be32 *) nla_data(nla);
-}
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
-/* These functions' nlattr source arguments weren't "const" before 2.6.29, so
- * cast their arguments to the non-"const" versions. Using macros for this
- * isn't exactly a brilliant idea, but it seems less error-prone than copying
- * the definitions of all umpteen functions. */
-#define nla_get_u64(nla) (nla_get_u64) ((struct nlattr *) (nla))
-#define nla_get_u32(nla) (nla_get_u32) ((struct nlattr *) (nla))
-#define nla_get_u16(nla) (nla_get_u16) ((struct nlattr *) (nla))
-#define nla_get_u8(nla) (nla_get_u8) ((struct nlattr *) (nla))
-/* nla_get_be64 is handled separately below. */
-#define nla_get_be32(nla) (nla_get_be32) ((struct nlattr *) (nla))
-#define nla_get_be16(nla) (nla_get_be16) ((struct nlattr *) (nla))
-#define nla_get_be8(nla) (nla_get_be8) ((struct nlattr *) (nla))
-#define nla_get_flag(nla) (nla_get_flag) ((struct nlattr *) (nla))
-#define nla_get_msecs(nla) (nla_get_msecs)((struct nlattr *) (nla))
-#define nla_memcpy(dst, src, count) \
- (nla_memcpy)(dst, (struct nlattr *)(src), count)
-#endif
-
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,34)
/* This function was introduced in 2.6.31, but initially it performed an
* unaligned access, so we replace it up to 2.6.34 where it was fixed. */
}
#endif
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
-/**
- * nla_type - attribute type
- * @nla: netlink attribute
- */
-static inline int nla_type(const struct nlattr *nla)
+#ifndef HAVE_NLA_PUT_BE16
+static inline int nla_put_be16(struct sk_buff *skb, int attrtype, __be16 value)
+{
+ return nla_put(skb, attrtype, sizeof(__be16), &value);
+}
+#endif
+
+#ifndef HAVE_NLA_PUT_BE32
+static inline int nla_put_be32(struct sk_buff *skb, int attrtype, __be32 value)
{
- return nla->nla_type & NLA_TYPE_MASK;
+ return nla_put(skb, attrtype, sizeof(__be32), &value);
}
#endif
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
-#define nla_parse_nested(tb, maxtype, nla, policy) \
- nla_parse_nested(tb, maxtype, (struct nlattr *)(nla), \
- (struct nla_policy *)(policy))
-#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
-#define nla_parse_nested(tb, maxtype, nla, policy) \
- nla_parse_nested(tb, maxtype, (struct nlattr *)(nla), policy)
+#ifndef HAVE_NLA_PUT_BE64
+static inline int nla_put_be64(struct sk_buff *skb, int attrtype, __be64 value)
+{
+ return nla_put(skb, attrtype, sizeof(__be64), &value);
+}
#endif
#ifndef nla_for_each_nested
}
#endif
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
-/**
- * nlmsg_report - need to report back to application?
- * @nlh: netlink message header
- *
- * Returns 1 if a report back to the application is requested.
- */
-static inline int nlmsg_report(const struct nlmsghdr *nlh)
-{
- return !!(nlh->nlmsg_flags & NLM_F_ECHO);
-}
-
-extern int nlmsg_notify(struct sock *sk, struct sk_buff *skb,
- u32 pid, unsigned int group, int report,
- gfp_t flags);
-#endif /* linux kernel < 2.6.19 */
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
-/* Before 2.6.19 the 'flags' parameter was missing, so replace it. We have to
- * #include <net/genetlink.h> first because the 2.6.18 version of that header
- * has an inline call to nlmsg_multicast() without, of course, any 'flags'
- * argument. */
-#define nlmsg_multicast rpl_nlmsg_multicast
-static inline int nlmsg_multicast(struct sock *sk, struct sk_buff *skb,
- u32 pid, unsigned int group, gfp_t flags)
-{
- int err;
-
- NETLINK_CB(skb).dst_group = group;
-
- err = netlink_broadcast(sk, skb, pid, group, flags);
- if (err > 0)
- err = 0;
-
- return err;
-}
-#endif /* linux kernel < 2.6.19 */
-
#endif /* net/netlink.h */
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