libnetlink: add attribute access inline functions
Based on idea in libmnl, add attribute access functions instead
of explicitly exposing casts. Also handle possible alignment issues
of u64.
diff --git a/include/libnetlink.h b/include/libnetlink.h
index a828032..b237579 100644
--- a/include/libnetlink.h
+++ b/include/libnetlink.h
@@ -70,6 +70,25 @@
({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \
__parse_rtattr_nested_compat(tb, max, rta, len); })
+static inline __u16 rta_getattr_u16(const struct rtattr *rta)
+{
+ return *(__u16 *)RTA_DATA(rta);
+}
+static inline __u16 rta_getattr_u32(const struct rtattr *rta)
+{
+ return *(__u32 *)RTA_DATA(rta);
+}
+static inline __u64 rta_getattr_u64(const struct rtattr *rta)
+{
+ __u64 tmp;
+ memcpy(&tmp, RTA_DATA(rta), sizeof(__u64));
+ return tmp;
+}
+static inline const char *rta_getattr_str(const struct rtattr *rta)
+{
+ return RTA_DATA(rta);
+}
+
extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler,
void *jarg);
extern int rtnl_from_file(FILE *, rtnl_filter_t handler,
