[NETLINK]: add nla_for_each_nested() to the interface list

[powerpc.git] / include / net / netlink.h

diff --git a/include/net/netlink.h b/include/net/netlink.h
index 47044da..2897a73 100644 (file)
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -151,6 +151,7 @@
  *   nla_parse()                       parse and validate stream of attrs
  *   nla_parse_nested()                        parse nested attribuets
  *   nla_for_each_attr()               loop over all attributes
+ *   nla_for_each_nested()             loop over the nested attributes
  *=========================================================================
  */
 
@@ -167,6 +168,7 @@ enum {
        NLA_FLAG,
        NLA_MSECS,
        NLA_NESTED,
+       NLA_NUL_STRING,
        __NLA_TYPE_MAX,
 };
 
@@ -175,21 +177,27 @@ enum {
 /**
  * struct nla_policy - attribute validation policy
  * @type: Type of attribute or NLA_UNSPEC
- * @minlen: Minimal length of payload required to be available
+ * @len: Type specific length of payload
  *
  * Policies are defined as arrays of this struct, the array must be
  * accessible by attribute type up to the highest identifier to be expected.
  *
+ * Meaning of `len' field:
+ *    NLA_STRING           Maximum length of string
+ *    NLA_NUL_STRING       Maximum length of string (excluding NUL)
+ *    NLA_FLAG             Unused
+ *    All other            Exact length of attribute payload
+ *
  * Example:
  * static struct nla_policy my_policy[ATTR_MAX+1] __read_mostly = {
  *     [ATTR_FOO] = { .type = NLA_U16 },
- *     [ATTR_BAR] = { .type = NLA_STRING },
- *     [ATTR_BAZ] = { .minlen = sizeof(struct mystruct) },
+ *     [ATTR_BAR] = { .type = NLA_STRING, len = BARSIZ },
+ *     [ATTR_BAZ] = { .len = sizeof(struct mystruct) },
  * };
  */
 struct nla_policy {
        u16             type;
-       u16             minlen;
+       u16             len;
 };
 
 /**
@@ -828,7 +836,7 @@ static inline int nla_put_msecs(struct sk_buff *skb, int attrtype,
 #define NLA_PUT_STRING(skb, attrtype, value) \
        NLA_PUT(skb, attrtype, strlen(value) + 1, value)
 
-#define NLA_PUT_FLAG(skb, attrtype, value) \
+#define NLA_PUT_FLAG(skb, attrtype) \
        NLA_PUT(skb, attrtype, 0, NULL)
 
 #define NLA_PUT_MSECS(skb, attrtype, jiffies) \