compat: backport unsigned netlink attribute accessors

These were added upstream in commit
4778e0be16c291ba6d9d55eeff3a6764fc84a071.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>

diff --git a/include/linux/compat-3.7.h b/include/linux/compat-3.7.h
index 9e8d6750ac73e81c6964e5a8d117fec6ad8356ee..bac76a3a114e494cefc40c5d6a30c44928f0f415 100644 (file)
--- a/include/linux/compat-3.7.h
+++ b/include/linux/compat-3.7.h
@@ -13,6 +13,7 @@
 #include <linux/user_namespace.h>
 #include <linux/file.h>
 #include <linux/seq_file.h>
+#include <net/netlink.h>
 
 #define VM_DONTDUMP    VM_NODUMP
 
@@ -108,6 +109,90 @@ static inline void eth_zero_addr(u8 *addr)
        memset(addr, 0x00, ETH_ALEN);
 }
 
+/**
+ * nla_put_s8 - Add a s8 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_s8(struct sk_buff *skb, int attrtype, s8 value)
+{
+       return nla_put(skb, attrtype, sizeof(s8), &value);
+}
+
+/**
+ * nla_put_s16 - Add a s16 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_s16(struct sk_buff *skb, int attrtype, s16 value)
+{
+       return nla_put(skb, attrtype, sizeof(s16), &value);
+}
+
+/**
+ * nla_put_s32 - Add a s32 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_s32(struct sk_buff *skb, int attrtype, s32 value)
+{
+       return nla_put(skb, attrtype, sizeof(s32), &value);
+}
+
+/**
+ * nla_put_s64 - Add a s64 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_s64(struct sk_buff *skb, int attrtype, s64 value)
+{
+       return nla_put(skb, attrtype, sizeof(s64), &value);
+}
+
+/**
+ * nla_get_s32 - return payload of s32 attribute
+ * @nla: s32 netlink attribute
+ */
+static inline s32 nla_get_s32(const struct nlattr *nla)
+{
+       return *(s32 *) nla_data(nla);
+}
+
+/**
+ * nla_get_s16 - return payload of s16 attribute
+ * @nla: s16 netlink attribute
+ */
+static inline s16 nla_get_s16(const struct nlattr *nla)
+{
+       return *(s16 *) nla_data(nla);
+}
+
+/**
+ * nla_get_s8 - return payload of s8 attribute
+ * @nla: s8 netlink attribute
+ */
+static inline s8 nla_get_s8(const struct nlattr *nla)
+{
+       return *(s8 *) nla_data(nla);
+}
+
+/**
+ * nla_get_s64 - return payload of s64 attribute
+ * @nla: s64 netlink attribute
+ */
+static inline s64 nla_get_s64(const struct nlattr *nla)
+{
+       s64 tmp;
+
+       nla_memcpy(&tmp, nla, sizeof(tmp));
+
+       return tmp;
+}
+
 #else /* (LINUX_VERSION_CODE > KERNEL_VERSION(3,7,0)) */
 #define netlink_notify_portid(__notify) (__notify->portid)
 #define genl_info_snd_portid(__genl_info) (__genl_info->snd_portid)