[NETLINK]: Introduce nested and byteorder flag to netlink attribute

This change allows the generic attribute interface to be used within
the netfilter subsystem where this flag was initially introduced.

The byte-order flag is yet unused, it's intended use is to
allow automatic byte order convertions for all atomic types.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 5 deletions

diff --git a/net/netlink/attr.c b/net/netlink/attr.c
index e4d7bed99c2e..ec39d12c2423 100644
--- a/net/netlink/attr.c
+++ b/net/netlink/attr.c
@@ -27,12 +27,12 @@ static int validate_nla(struct nlattr *nla, int maxtype,
                         const struct nla_policy *policy)
 {
         const struct nla_policy *pt;
-        int minlen = 0, attrlen = nla_len(nla);
+        int minlen = 0, attrlen = nla_len(nla), type = nla_type(nla);
 
-        if (nla->nla_type <= 0 || nla->nla_type > maxtype)
+        if (type <= 0 || type > maxtype)
                 return 0;
 
-        pt = &policy[nla->nla_type];
+        pt = &policy[type];
 
         BUG_ON(pt->type > NLA_TYPE_MAX);
 
@@ -149,7 +149,7 @@ int nla_parse(struct nlattr *tb[], int maxtype, struct nlattr *head, int len,
         memset(tb, 0, sizeof(struct nlattr *) * (maxtype + 1));
 
         nla_for_each_attr(nla, head, len, rem) {
-                u16 type = nla->nla_type;
+                u16 type = nla_type(nla);
 
                 if (type > 0 && type <= maxtype) {
                         if (policy) {
@@ -185,7 +185,7 @@ struct nlattr *nla_find(struct nlattr *head, int len, int attrtype)
         int rem;
 
         nla_for_each_attr(nla, head, len, rem)
-                if (nla->nla_type == attrtype)
+                if (nla_type(nla) == attrtype)
                         return nla;
 
         return NULL;